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WO2024247792A1 - Dispositif de traitement d'informations, programme et procédé de traitement d'informations - Google Patents

Dispositif de traitement d'informations, programme et procédé de traitement d'informations Download PDF

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Publication number
WO2024247792A1
WO2024247792A1 PCT/JP2024/018559 JP2024018559W WO2024247792A1 WO 2024247792 A1 WO2024247792 A1 WO 2024247792A1 JP 2024018559 W JP2024018559 W JP 2024018559W WO 2024247792 A1 WO2024247792 A1 WO 2024247792A1
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WIPO (PCT)
Prior art keywords
heat
information processing
cold storage
secondary battery
processing device
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English (en)
Japanese (ja)
Inventor
正明 長谷川
弘就 星野
俊幸 志手
康孝 柏木
浩一 加藤
潤二 大濱
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Sony Group Corp
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Sony Group Corp
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    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10—Energy storage using batteries

Definitions

  • This disclosure relates to an information processing device, a program, and an information processing method.
  • Mobile terminals such as smartphones and tablet PCs (Personal Computers), and information processing devices such as digital cameras, can generate significant heat when the CPU (Central Processing Unit) or GPU (Graphic Processing Unit) is under high processing load.
  • CPU Central Processing Unit
  • GPU Graphic Processing Unit
  • high-load processing such as video recording, streaming, and game operation is performed simultaneously with charging, the internal temperature of the information processing device rises significantly.
  • Some information processing devices are equipped with a function that suppresses the rise in internal temperature by, for example, lowering the processing speed of the CPU or GPU when the internal temperature approaches a dangerous temperature that could cause low-temperature burns to the user or deterioration of the information processing device.
  • processing sluggishness is especially likely to occur the more intensive the processing, such as video recording, streaming, or game operation. Processing sluggishness during such high-load processing is a major factor that detracts from a comfortable user experience, and is a phenomenon that users do not want to occur.
  • This disclosure therefore proposes an information processing device, program, and information processing method that can maintain for as long as possible a state in which a decrease in CPU/GPU processing speed due to heat generation is unlikely to occur.
  • an information processing device that includes a secondary battery and a cold storage device, and that includes a control unit that determines whether the processing capacity of the information processing device is limited by heat generation, determines whether to cool the latent heat storage material of the cold storage device based on the charge state of the secondary battery, and, if it is determined that the processing capacity is limited by heat generation, executes a process to exchange heat between the latent heat storage material and a heat source.
  • a program for causing an information processing device equipped with a secondary battery and a cold storage device to determine whether the processing capacity of the information processing device is limited by heat generation, to determine whether or not to cool the latent heat storage material of the cold storage device based on the charge state of the secondary battery, and to execute a process for exchanging heat between the latent heat storage material and a heat source if it is determined that the processing capacity is limited by heat generation.
  • the present disclosure also provides an information processing method in which an information processing device including a secondary battery and a cold storage device determines whether the processing capacity of the information processing device is limited by heat generation, determines whether to cool the latent heat storage material of the cold storage device based on the charge state of the secondary battery, and, if it is determined that the processing capacity is limited by heat generation, executes a process to exchange heat between the latent heat storage material and a heat source.
  • FIG. 1 is a diagram illustrating an example of an information processing device 10 according to an embodiment of the present invention.
  • FIG. 11 is a diagram illustrating another example of the information processing device 10 according to the present embodiment.
  • 1 is a block diagram showing an example of a functional configuration of an information processing device 10 according to an embodiment of the present invention.
  • FIG. 2 is a diagram showing an example of the configuration of a cold storage device 310 according to the present embodiment.
  • 11 is a diagram for explaining a control method (1) of the cold storage device 310 and the secondary battery 500 according to the present embodiment.
  • FIG. 11 is a diagram for explaining a control method (2) of the cold storage device 310 and the secondary battery 500 according to the present embodiment.
  • FIG. 11 is a diagram for explaining a control method (3) of the cold storage device 310 and the secondary battery 500 according to the present embodiment.
  • FIG. 13 is a diagram for explaining a control method (4) of the cold storage device 310 and the secondary battery 500 according to the present embodiment.
  • FIG. 1 is a diagram for explaining a heat exchange method (1) between a cold storage device 310 and a heat source 410 according to the present embodiment.
  • FIG. 11 is a diagram for explaining a heat exchange method (2) between the cold storage device 310 and the heat source 410 according to the present embodiment.
  • FIG. 11 is a diagram for explaining a heat exchange method (3) between the cold storage device 310 and the heat source 410 according to the present embodiment.
  • FIG. FIG. 11 is a diagram for explaining switching of charge control modes (1) according to the present embodiment.
  • FIG. 13 is a diagram for explaining switching of charge control modes (2) according to the present embodiment.
  • 5 is a flowchart showing a flow of a charge control process according to the embodiment.
  • 5 is a flowchart showing a flow of a heat exchange control process according to the present embodiment.
  • 1 is a block diagram showing an example of a hardware configuration of an information processing device 10 according to an embodiment of the present invention.
  • the information processing device 10 may be, for example, a mobile terminal such as a smartphone or tablet PC capable of executing various applications, or may be a stationary terminal installed in a user's home or office.
  • the information processing device 10 includes, for example, a secondary battery (also called a rechargeable battery, storage battery, battery, or rechargeable battery).
  • the information processing device 10 can operate for a certain period of time using power supplied from the secondary battery by, for example, charging the secondary battery, even without power supply from an external power source (such as an AC adapter or a mobile battery).
  • FIG. 1 is a diagram showing an example of an information processing device 10 according to this embodiment.
  • a game application is displayed on a display unit 110, which is a display of the information processing device 10, and indicates that the game application is in the foreground state.
  • the information processing device 10 is also connected to an external power source 90 via a cable 50. Note that if the external power source 90 is directly connected to the information processing device 10, the cable 50 is not necessary.
  • the state shown in FIG. 1 is realized in a conventional information processing device, high-load processing by the game application and charging are executed simultaneously, which may cause the internal temperature of the information processing device to rise significantly and lead to a decrease in the processing speed of the CPU.
  • FIG. 2 is a diagram showing another example of the information processing device 10 according to this embodiment.
  • nothing is displayed on the display unit 110 of the information processing device 10, indicating that no operation is being performed by the user.
  • the information processing device 10 is connected to an external power source 90 via a cable 50.
  • the information processing device is in a low-load processing state, and the internal temperature of the information processing device does not rise significantly, with heat generated by charging being the main source of heat.
  • FIG. 3 is a block diagram showing an example of the functional configuration of the information processing device 10 according to the present embodiment.
  • the information processing device 10 according to the present embodiment includes, for example, a display unit 110, an operation unit 120, a storage unit 130, a camera unit 140, a detection unit 150, a measurement unit 160, a determination unit 170, a charging control unit 180, a control unit 200, a cold storage unit 300, a heat exchange control unit 350, a heat generating unit 400, a heat path 450, and a secondary battery 500.
  • the determination unit 170 includes, for example, a determination unit A171, a determination unit B172, a determination unit C173, and a determination unit D174.
  • the information processing device 10 may include a communication unit that is connected wirelessly or wired to various communication networks such as the Internet and transmits and receives information between the information processing device and other information processing devices on the network.
  • the display unit 110 displays various visual information based on, for example, the control by the control unit 200.
  • the display unit 110 may display images and characters related to an application.
  • the display unit 110 includes various display devices, such as a liquid crystal display (LCD) device and an organic light emitting diode (OLED) display device.
  • the display unit 110 can also superimpose and display a user interface (UI) of an operating system or another application on a layer higher or lower than the screen of the application being displayed.
  • UI user interface
  • the operation unit 120 detects various operations by the user, such as device operations for applications, and inputs information related to the detected user operations to the control unit 200.
  • the device operations include, for example, touch operations.
  • the touch operations refer to contact operations such as tapping, double tapping, swiping, and pinching on the display unit 110, but may also include non-contact operations in which an object such as a finger is brought close to the display unit 110.
  • the operation unit 120 includes, for example, a touch panel, a button, a keyboard, a mouse, and a proximity sensor.
  • the storage unit 130 is, for example, a storage area for temporarily or permanently storing various programs and data.
  • the storage unit 130 may store programs and data for the information processing device 10 to execute various functions.
  • the storage unit may store programs for executing various applications, management data for managing various settings, and the like. Note that the programs and data are merely examples, and the type of data stored in the storage unit is not particularly limited.
  • the camera unit 140 is, for example, a camera device, and captures an image of a subject and acquires various types of visual information based on the control of the control unit 200.
  • the camera unit 140 may acquire information such as an image, distance, and size of the subject.
  • the detection unit 150 monitors and detects various changes that trigger execution of, for example, a secondary battery charging control process or a heat exchange control process.
  • the detection unit 150 detects, for example, that the temperature of the cold storage device 310, which is an example of the cold storage unit 300, has become equal to or higher than a predetermined threshold value or has become lower than a predetermined threshold value.
  • the detection unit 150 only needs to monitor the temperature of the cold storage device 310 and detect that a condition is satisfied with respect to a preset threshold value, and can also detect, for example, that the temperature has become equal to or lower than the threshold value or that the temperature has exceeded the threshold value. In other words, whether the condition includes a threshold value (above or below, below, etc.) or does not include a threshold value (below, above, below, etc.) is within the scope of design change.
  • the detection unit 150 also detects, for example, that a specific application has entered a foreground state, a sleep state, and has been terminated.
  • a sleep state does not mean that an application is completely stopped, and background processing may be performed, so the detection unit 150 can also detect that an application has entered a background state. That is, for example, in the case of a specific application whose background processing may be high-load processing, it is possible to detect that the application has entered a background state and execute a heat exchange control process as if the application had entered a foreground state.
  • the specific application may be, for example, a pre-designated application that may be high-load processing.
  • the performance or resource state of the information processing device 10 may be measured by the measurement unit 160 described below, for example, to identify an application that is actually performing high-load processing.
  • the detection unit 150 also detects, for example, when the remaining charge of the secondary battery 500 is equal to or greater than a predetermined threshold, or when it is less than a predetermined threshold.
  • the detection unit 150 only needs to monitor the remaining charge of the secondary battery 500 and detect that a condition is met relative to a preset threshold, and the threshold determination conditions can be changed within the scope of design changes, similar to the threshold conditions for temperature detection of the cooling storage device 310 described above.
  • the detection unit 150 also detects, for example, that an external power source 90 has been connected to the information processing device 10.
  • detecting that an external power source 90 has been connected includes, for example, detecting that a cable 50 connected to the external power source 90 has been connected to the information processing device 10, as shown in FIG. 1.
  • the measurement unit 160 measures various values in the information processing device 10, for example, based on the control by the control unit 200.
  • the measurement unit 160 measures the temperature in the information processing device 10.
  • the temperature in the information processing device 10 may include the temperatures of the heat generating unit 400, which is a heat source such as a CPU or GPU, the secondary battery 500 (including a charging circuit), and the cold storage device 310, and the temperature of the rear surface of the housing of the information processing device 10.
  • the measurement unit 160 also measures, for example, the remaining capacity of the secondary battery 500.
  • the measurement unit 160 also measures operation information of the operation unit 120 (for example, whether or not there is a change in the capacitance value of the touch panel or whether or not there is a change in the acceleration sensor) in order to determine the user's usage state, such as whether or not the user is holding the information processing device 10 in his/her hand.
  • the determination unit 170 determines various conditions, for example, based on the control by the control unit 200.
  • the determination unit 170 includes a determination unit A171 that determines whether the processing capacity of the information processing device 10 is limited by heat generation, a determination unit B172 that determines whether to cool the cold storage device 310 based on the charging state of the secondary battery 500, a determination unit C173 that determines whether to cool the heat source based on the running state of a specific application and the heat generation conditions of the heat source, and a determination unit D174 that determines the user's usage state and determines the ability to cool the cold storage device 310 based on the temperature inside the information processing device 10 and the user's usage state.
  • the cooling of the cold storage device 310 may be, for example, cooling of the latent heat storage material 311 of the cold storage device 310, which will be described later.
  • the heat generation conditions of the heat source may be, for example, the type and amount of heat generation of the heat source, the thermal resistance or thermal conductivity of the heat source, and the like.
  • the temperature inside the information processing device 10 may be, for example, the temperature of the heat source, the secondary battery 500, the charging circuit of the secondary battery 500, the cold storage device 310, the rear surface of the housing of the information processing device 10, and the like.
  • the determination unit 170 also determines, for example, whether the remaining charge of the secondary battery 500 is equal to or greater than a predetermined threshold, and determines the running state of a predetermined application, such as whether a predetermined application is in the foreground state. For example, the determination of whether to cool the cold storage device 310 based on the charge state of the secondary battery 500, which is executed by the determination unit 170, may include a determination of whether to prioritize cooling the cold storage device 310 over charging the secondary battery 500, based on the remaining charge of the secondary battery 500 and the temperature of the cold storage device 310.
  • Some of the determinations made by the determination unit 170 are similar to the detections made by the detection unit 150 described above, such as when the temperature of the cool storage device 310 reaches or exceeds a predetermined threshold, when the remaining charge of the secondary battery 500 reaches or exceeds a predetermined threshold, when a predetermined application enters the foreground state, etc. However, at the time of the determination made by the determination unit 170, it is possible that the phenomenon that should be detected by the detection unit 150 has already occurred, in which case the detection unit 150 is unable to detect it, and therefore the determination is made by the determination unit 170 without omission.
  • the charge control unit 180 controls, for example, cooling of the cold storage device 310 and charging of the secondary battery 500 based on the control by the control unit 200. Also, the charge control unit 180 controls cooling of the cold storage device 310 from the external power source 90 and charging of the secondary battery 500 based on, for example, the contents detected by the detection unit 150 and the determination result by the determination unit 170.
  • Control unit 200 The control unit 200 according to this embodiment is, for example, a processing unit that controls the entire information processing device 10 and controls each component included in the information processing device 10 .
  • the cold storage unit 300 in this embodiment is a cold storage device 310 that combines a cold storage device such as a latent heat storage material 311 that is cooled based on the control of the charging control unit 180, and a device such as a Peltier element or a heat pump for performing cooling.
  • a cold storage device such as a latent heat storage material 311 that is cooled based on the control of the charging control unit 180
  • a device such as a Peltier element or a heat pump for performing cooling.
  • the cold storage device 310 which is an example of the cold storage unit 300, includes a latent heat storage material 311 such as PCM (Phase Change Material), a thermally conductive paste 312, a cooling element 313 such as a Peltier element, and a heat dissipation structure 314 such as a heat sink.
  • the heat dissipation structure 314 can dissipate heat generated when the cooling element 313 is operated to cool the latent heat storage material 311.
  • the heat dissipation structure 314 may be used to dissipate heat from the heat generating unit 400 according to this embodiment.
  • the thermally conductive paste 312 (or a thermally conductive sheet) is, for example, for increasing thermal conductivity, and is generally used in places where heat exchange is performed and where contact thermal resistance is high, and is shown as an example in FIG. 4.
  • the configuration of the cold storage device 310 shown in FIG. 4 is merely an example, and some of the components may be omitted, or components other than those shown in FIG. 4 may be further included.
  • the heat exchange control unit 350 for example, based on the control by the control unit 200, thermally connects the latent heat storage material 311 of the cold storage unit 300 and the heat generation unit 400 with a highly thermally conductive material as a thermal path 450, and controls the heat exchange between the latent heat storage material 311 and the heat generation unit 400.
  • the heat transfer path of the heat exchange for example, since the latent heat storage material 311 of the cold storage device 310 is the part to be cooled as the cold storage part, the latent heat storage material 311 and the heat generation unit 400 are connected via the highly thermally conductive material as the thermal path 450 and the heat exchange control unit 350, and heat exchange is performed.
  • the heat exchange control unit 350 not only controls based on the control by the control unit 200, but can also thermally connect the latent heat storage material 311 and the heat generating unit 400 by utilizing the temperature difference between the latent heat storage material 311 of the cold storage unit 300 and the heat generating unit 400, for example, using a shape memory alloy.
  • the heat exchange control unit 350 can also control whether or not to physically contact a heat switch, a shape memory alloy, or a material with high thermal conductivity, using an external force.
  • the heat exchange control unit 350 can change the thermal conductivity based on the difference between the temperature of the cold storage device 310 and the temperature of the heat generating unit 400, and control from the control unit 200 may not be necessary.
  • the heat generating unit 400 indicates, for example, a heat source that inhibits the processing capacity of the information processing device 10 by heat.
  • the heat generating unit 400 may be in various places, for example, a device itself that is responsible for the processing capacity of a CPU or GPU, a power supply integrated circuit (IC) or a signal processing unit, or a camera unit 140.
  • the heat generating unit is not limited to one place, and may be in multiple places.
  • the functional configuration of the information processing device 10 is merely an example, and the functional configuration of the information processing device 10 according to this embodiment is not limited to this example.
  • the information processing device 10 does not necessarily have to include all of the configuration shown in FIG. 3.
  • the functional configuration of the information processing device 10 according to this embodiment can be flexibly modified depending on the specifications and operation.
  • a computing device such as a CPU (Central Processing Unit) may read and execute an information processing program that describes the processing procedures for realizing the functions of each component from a storage medium such as a ROM (Read Only Memory) or RAM (Random Access Memory). Therefore, it is possible to change the configuration used as appropriate depending on the technical level at the time of implementing this embodiment.
  • a storage medium such as a ROM (Read Only Memory) or RAM (Random Access Memory). Therefore, it is possible to change the configuration used as appropriate depending on the technical level at the time of implementing this embodiment.
  • An example of the hardware configuration of the information processing device 10 will be described later.
  • the control unit 200 of the information processing device 10 controls each component shown in FIG. 3, and receives the contents of detection by the detection unit 150 and the judgment result by the judgment unit 170 as inputs from each component.
  • the control unit 200 controls the charging of the secondary battery 500 from the external power source 90 and the cooling of the cold storage device 310 via the charging control unit 180 according to the received detection contents and judgment results.
  • the control method of the cold storage device 310 and the secondary battery 500 will be described in more detail with reference to FIGS. 5 to 8.
  • FIG. 5 is a diagram for explaining a control method (1) of the cold storage device 310 and the secondary battery 500 according to this embodiment.
  • FIG. 5 is a diagram showing a "normal charging mode" which is one of the control modes according to this embodiment.
  • the CPU/GPU 210 which is the control unit 200 of the information processing device 10
  • the secondary battery 500, and the cold storage device 310 are all controlled to receive power supply from the external power source 90.
  • Such normal charging mode control is a general control method when, for example, an external power source 90 is connected to an information processing device 10 equipped with a secondary battery 500, and the latent heat storage material 311 of the cold storage device 310 is cooled at the same time as the secondary battery 500 is charged. Therefore, if a high-load process such as a game operation is performed while the normal charging mode is maintained, the temperature inside the information processing device rises significantly due to the combination of heat generation due to the high-load process, heat generation due to charging, and heat generation due to cooling of the latent heat storage material 311 of the cold storage device 310.
  • the control mode is switched based on the charging state of the secondary battery 500 and the cooling state of the latent heat storage material 311 of the cold storage device 310, etc., to maintain a state in which a decrease in the processing speed of the CPU/GPU is unlikely to occur for as long as possible.
  • FIG. 6 is a diagram for explaining a control method (2) of the cold storage device 310 and the secondary battery 500 according to this embodiment.
  • FIG. 6 is a diagram showing a "charge priority mode" which is one of the control modes according to this embodiment.
  • the charge priority mode for example, the CPU/GPU 210 and the secondary battery 500 of the information processing device 10 are controlled so as to receive power from the external power source 90, and the cold storage device 310 is controlled so as not to receive power.
  • the latent heat storage material 311 of the cold storage device 310 is not cooled. Therefore, in the charge priority mode, unlike the normal charging mode, heat is not generated due to cold storage.
  • FIG. 7 is a diagram for explaining the control method (3) of the cold storage device 310 and the secondary battery 500 according to this embodiment.
  • FIG. 7 is a diagram showing the "cold storage priority mode", which is one of the control modes according to this embodiment.
  • the secondary battery 500 is controlled so as not to receive power supply from the external power source 90.
  • the information processing device 10 can use, for example, the power supplied from the external power source 90 to cool the latent heat storage material 311 of the cold storage device 310, so that heat generation due to charging of the secondary battery 500 is suppressed and the latent heat storage material 301 of the cold storage device 310 can be cooled more quickly.
  • the information processing device 10 can be controlled to increase the cooling capacity of the latent heat storage material 311 of the cold storage device 310.
  • the information processing device 10 switches between the normal charging mode, charging priority mode, and cold storage priority mode so as to maintain for as long as possible a state in which a decrease in CPU/GPU processing speed due to heat generation is unlikely to occur, and controls charging of the secondary battery 500 and cooling of the cold storage device 310.
  • the charging control unit 180 switches to cold storage priority mode, stops charging the secondary battery 500 from the external power source 90, and prioritizes cooling the latent heat storage material 311 of the cold storage device 310. This suppresses an increase in internal temperature due to charging, and enables the latent heat storage material 311 of the cold storage device 310 to store cold more quickly.
  • a predetermined threshold e.g., 80%
  • the threshold for the remaining charge of the secondary battery 500 can also be set to prioritize cooling the latent heat storage material 311 of the cold storage device 310 over charging the secondary battery 500 when a situation in which the processing speed of the CPU/GPU is required can be foreseen in advance.
  • the charging control unit 180 switches from the cold storage priority mode to the normal charging mode and starts charging the secondary battery 500 from the external power source 90.
  • the normal charging mode can be a mode in which power is supplied to both the cold storage device 310 and the secondary battery 500 in order to mutually maintain the amount of increase in the cold storage temperature of the latent heat storage material 311 of the cold storage device 310 after cooling is stopped and the amount of decrease in the remaining battery charge of the secondary battery 500 after charging is stopped in an optimal state when the user switches the information processing device 10 from an unused state (e.g., while the user is sleeping) to a used state (e.g., when the user wakes up).
  • an unused state e.g., while the user is sleeping
  • a used state e.g., when the user wakes up
  • the charge control unit 180 can control the secondary battery 500 to be used to cool the latent heat storage material 311 of the cold storage device 310 when the secondary battery 500 has a sufficient remaining battery power (for example, 50% or more).
  • the charge control mode can be, for example, a "cold storage priority mode".
  • FIG. 8 is a diagram for explaining the control method (4) of the cold storage device 310 and the secondary battery 500 according to this embodiment.
  • FIG. 8 is a diagram showing such a "cold storage priority mode" in which the secondary battery 500 is controlled to be used to cool the latent heat storage material 311 of the cold storage device 310.
  • the latent heat storage material 311 of the cold storage device 310 is controlled to be cooled by the power supplied from the secondary battery 500.
  • the charging control modes include, for example, a general normal charging mode in which the secondary battery 500 is charged, as well as a quick charging mode that reduces the time required for charging compared to normal charging.
  • the quick charging mode generates more heat per unit time due to charging than the normal charging mode. For example, when the internal temperature of the information processing device 10 measured by the measuring unit 160 is within a predetermined temperature range, the charging control unit 180 can control charging of the secondary battery 500 from the external power source 90 to be performed using quick charging.
  • the charging control unit 180 may perform control to stop charging the secondary battery 500 from the external power source 90.
  • Such control to stop charging the secondary battery 500 from the external power source 90 may be, for example, control to stop charging the secondary battery from the external power source 90 when the remaining charge of the secondary battery 500 is equal to or greater than a first threshold and a specific application is in the foreground state.
  • the first threshold is, for example, a boundary below which a decrease in the processing speed of the CPU/GPU may occur due to a decrease in the remaining charge of the secondary battery 500 when the remaining charge of the secondary battery 500 falls below the first threshold.
  • the control to stop charging the secondary battery 500 from the external power source 90 may be, for example, a control to stop charging the secondary battery 500 from the external power source 90 and stop the power supply from the external power source 90 when the remaining charge of the secondary battery 500 is equal to or greater than a second threshold.
  • the second threshold is, for example, a boundary at which deterioration of the secondary battery 500 may occur due to overcharging, etc., if the remaining charge of the secondary battery 500 continues to exceed the second threshold.
  • Figure 9 is a diagram for explaining the heat exchange method (1) between the cold storage device 310 and the heat source 410 according to this embodiment.
  • Figure 9 is a diagram showing the heat source 410, which is the heat generating part 400, and the latent heat storage material 311 of the cold storage device 310, which are connected by a highly thermally conductive material, which is a heat path 450, via a heat exchange control part 350.
  • heat source 410 there may be one heat source 410 or two or more heat sources, so in the example of FIG. 9, two heat sources A 410-1 and B 410-2 are shown. Also, when there are multiple heat sources 410, there is a heat exchange control unit 350 for each heat source 410, so in the example of FIG. 9, heat exchange control units A 350-1 and B 350-2 are shown for heat source A 410-1 and heat source B 410-2, respectively.
  • the CPU/GPU that controls the processing capacity of the information processing device 10 is a large heat source for the heat source 410, but other heat sources such as the camera unit 140 can also be large heat sources.
  • the heat exchange control unit 350 performs control to increase the thermal conductivity or decrease the thermal resistance of the heat source 410 according to the instruction of the control unit 200.
  • the heat exchange control unit A350-1 and the heat exchange control unit B350-2 perform control to increase the thermal conductivity or decrease the thermal resistance of the latent heat storage material 311 of the cold storage device 310 and the heat source A410-1 and the heat source B410-2, respectively.
  • the example of FIG. 9 shows a case where heat exchange is required for both the heat source A410-1 and the heat source B410-2. This is, for example, when the camera unit 140 inputs an image to the control unit 200. In this case, the heat source 410 is located in two places, the CPU/GPU 210 and the camera unit 140, in order for the CPU/GPU 210 to process the signal of the camera unit 140.
  • FIG. 10 is a diagram for explaining a heat exchange method (2) between the cold storage device 310 and the heat source 410 according to this embodiment.
  • the example in FIG. 10 shows a case where heat exchange is not required for the heat source B410-2. This is the case, for example, when an application that does not use the camera unit 140 is being used. In this case, there is only one heat source 410 and heat exchange is not required for the heat source B410-2. Therefore, the heat exchange control unit B350-2 controls to increase the thermal resistance of the heat source B410-2 so that the heat exchange is not performed.
  • FIG. 11 is a diagram for explaining the heat exchange method (3) between the cold storage device 310 and the heat source 410 according to this embodiment.
  • the example in FIG. 11 shows a case where heat exchange is not required for both the heat source A410-1 and the heat source B410-2. This is the case where, for example, the amount of heat generated by the heat source 410 in the information processing device 10 is small and is within a range where heat exchange with the cold storage device 310 is not required.
  • the heat exchange control unit 350 controls the heat resistance to the heat source 410 to remain high, and maintains the temperature of the cold storage device 310 low.
  • the resolution is low and heat is small, and heat exchange with the cold heat of the latent heat storage material 311 of the cold storage device 310 is not required.
  • the application is controlled so that heat exchange is not performed for both the heat source A410-1 and the heat source B410-2, and the cold heat of the latent heat storage material 311 of the cold storage device 310 can be preserved for the time when it corresponds to the maximum load.
  • Figure 12 is a diagram for explaining the switching of the charge control mode (1) according to this embodiment.
  • Figure 12 is a diagram showing, for example, how the charge control mode is switched depending on the state of a specific application for high load processing or the remaining charge of the secondary battery 500, and how the heat exchange control unit operates depending on the temperature of the latent heat storage material 311 of the cold storage device 310.
  • the vertical axis on the left side of the graph in Figure 12 indicates the remaining charge of the secondary battery 500
  • the vertical axis on the right side indicates the temperature of the latent heat storage material 311 of the cold storage device 310
  • the horizontal axis indicates time.
  • the heat exchange state refers to, for example, a state in which heat exchange is being performed between the cold storage device 310 and the heat source 410 by the heat exchange control unit 350.
  • the charge control mode is controlled to switch to the charge priority mode.
  • charging of the secondary battery 500 begins, and the remaining charge of the secondary battery 500 continues to increase.
  • the heat generation state due to the specific application being operated is compared with the temperature state of the cold storage device 310, and if the temperature of the latent heat storage material 311 of the cold storage device 310 is still low enough to perform cooling, the heat exchange control unit 350 continues to operate while maintaining a state with heat exchange.
  • the specific application goes into a sleep state or is terminated, so the amount of heat generated by the heat source 410 decreases, and the heat exchange control unit 350 switches to a state without heat exchange.
  • the state without heat exchange refers to, for example, a state in which the heat exchange control unit 350 is not performing heat exchange between the cold storage device 310 and the heat source 410.
  • the charge control mode is controlled to switch from the charge priority mode to the cold storage priority mode, and the power supplied from the external power source 90 is controlled to be used to cool the latent heat storage material 311 of the cold storage device 310.
  • the temperature of the latent heat storage material 311 of the cold storage device 310 continues to drop.
  • the remaining charge of the secondary battery 500 does not increase, but since the CPU/GPU 210 is supplied with power from the external power source 90, the remaining charge of the secondary battery 500 does not decrease. In this case, the remaining charge of the secondary battery 500 remains stable. Also, since there is no heat generation due to charging of the secondary battery 500, the cooling efficiency of the cold storage device 310 also increases.
  • the charging control mode is controlled to switch from the cold storage priority mode to the normal charging mode, and charging of the secondary battery 500 and cooling of the cold storage device 310 are controlled to be performed up to the maximum allowable value.
  • a predetermined threshold e.g., -5 degrees
  • charging is controlled to be performed slowly as it approaches 100% full charge, which is an example of the maximum allowable value, so as to avoid overcharging as much as possible.
  • cooling of the cold storage device 310 is affected by heat generated by charging the secondary battery 500, and is controlled to cool at a slower rate so as to prevent the temperature due to the heat generated from reaching the maximum allowable value as much as possible.
  • the specific application is again in the foreground state, so that the amount of heat generated by the heat source 410 increases with the operation of the specific application, and control is performed to switch to a state with heat exchange in order to cool the heat source 410.
  • control is performed to switch the charge control mode to a charge priority mode in order to stop cooling the cold storage device 310.
  • cooling of the latent heat storage material 311 of the cold storage device 310 may continue as is, but in the case of a small information processing device 10 such as a smartphone, this is currently impractical and difficult.
  • FIG. 13 is a diagram for explaining the switching of the charge control mode (2) according to this embodiment.
  • a specific application in the initial state (time 0), a specific application is in a sleep state or is not running, so the heat source 410 of the information processing device 10 does not generate much heat, and the cold heat of the latent heat storage material 311 of the cold storage device 310 does not need to be used to cool the heat source 410, so the heat exchange control unit 350 operates in a state without heat exchange.
  • a specific application enters the foreground state and operates, increasing the amount of heat generated by the heat source 410. Then, the heat generation state of the specific operating application is compared with the temperature state of the latent heat storage material 311 of the cold storage device 310, and if the temperature is low enough for the latent heat storage material 311 of the cold storage device 310 to perform cooling, the heat exchange control unit 350 switches to a state with heat exchange.
  • the amount of heat generated by the heat source 410 decreases because a specific application goes into a sleep state or is terminated, and the heat exchange control unit 350 switches to a state without heat exchange. Also, if the remaining charge of the secondary battery 500 is equal to or greater than a predetermined threshold (e.g., 50%) and the temperature of the information processing device 10 is acceptable for cooling the cold storage device 310, the charge control mode is controlled to switch from the charge priority mode to the cold storage priority mode, and the power of the secondary battery 500 is controlled to be used to cool the latent heat storage material 311 of the cold storage device 310.
  • a predetermined threshold e.g. 50%
  • the charging control mode is controlled to switch to the off state.
  • a predetermined threshold e.g. 50%
  • a predetermined threshold e.g. 10 degrees
  • FIG. 13 shows an example in which the charge control mode is switched to the rapid charge mode. Also, in the rapid charge mode, the amount of heat generated from the charging circuit is large and it is necessary to suppress the charging capacity, so the heat exchange control unit 350 switches to a state with heat exchange in order to utilize the cold heat of the latent heat storage material 311 of the cold storage device 310.
  • the specific application is again in the foreground state, so that the amount of heat generated by the heat source 410 increases with the operation of the specific application, and the temperature of the latent heat storage material 311 of the cold storage device 310 continues to rise.
  • the rapid charge mode continues while a specific application that is a high-load process remains in the foreground, the internal temperature of the information processing device 10 may rise significantly, so the rapid charge mode is controlled to be stopped (the charge control mode is switched to the charge priority mode). Also, in this state, the heat exchange control unit 350 continues to operate while maintaining a state with heat exchange. This is because, for example, even if the temperature of the latent heat storage material 311 of the cold storage device 310 rises, in a situation where the temperature does not rise higher than that of the heat source 410, maintaining a low thermal resistance between the heat source 410 and the cold storage device 310 is better for dissipating heat within the information processing device 10.
  • the charging control unit 180 and the heat exchange control unit 350 control the timing of charging the secondary battery 500 and cooling the cold storage device 310 so that a state in which specific applications performing high-load processing are not restricted by heat generation, i.e., a state in which a decrease in CPU/GPU processing speed due to heat generation is unlikely to occur, can be maintained for as long as possible.
  • Fig. 14 is a flowchart showing the flow of the charge control process according to this embodiment.
  • the charge control process is a process for switching the charge control mode based on the connection state of the external power supply 90, the remaining charge of the secondary battery 500, and the temperature of the latent heat storage material 311 of the cold storage device 310, and controlling the charging of the secondary battery 500 and the cooling of the cold storage device 310.
  • the information processing device 10 determines, for example, whether or not an external power source 90 is connected to the information processing device 10 (step S101).
  • step S101 If it is determined that the external power source 90 is connected to the information processing device 10 (step S101: Yes), the information processing device 10 then determines, for example, whether the remaining charge of the secondary battery 500 is 80% or more (step S102).
  • step S102 If it is determined that the remaining charge of the secondary battery 500 is 80% or more (step S102: Yes), the information processing device 10 then determines, for example, whether the temperature of the cold storage device 310 is -5 degrees or more (step S103).
  • step S103 If it is determined that the temperature of the cold storage device 310 is -5 degrees or higher (step S103: Yes), the information processing device 10 then switches the charge control mode to a cold storage priority mode, for example, and cools the latent heat storage material 311 of the cold storage device 310 (step S104).
  • step S104 the charge control process shown in FIG. 14 ends, but strictly speaking, the charge control process shown in FIG. 14 is repeated from time to time, and the charge control mode is switched and control is performed in each charge control mode based on the connection state of the external power source 90, the remaining charge of the secondary battery 500, and the temperature of the latent heat storage material 311 of the cold storage device 310.
  • step S103 determines that the temperature of the cold storage device 310 is less than -5 degrees (step S103: No)
  • the information processing device 10 switches the charge control mode to the normal charge mode, and controls the CPU/GPU 210, the secondary battery 500, and the cold storage device 310 to all receive power supply from the external power source 90 (step S105).
  • step S105 the charge control process shown in FIG. 14 also ends, but the charge control process shown in FIG. 14 is repeated as necessary.
  • step S102 If it is determined in step S102 that the remaining charge of the secondary battery 500 is less than 80% (step S102: No), then the information processing device 10, for example, switches the charge control mode to a charge priority mode, and controls the CPU/GPU 210 and the secondary battery 500 to receive power from the external power source 90, and the cool storage device 310 not to receive power (step S106). After step S106 is executed, the charge control process shown in FIG. 14 also ends, but the charge control process shown in FIG. 14 is repeated as needed.
  • step S107 If it is determined that the remaining charge of the secondary battery 500 is 50% or more (step S107: Yes), the information processing device 10 then determines, for example, whether the temperature of the cold storage device 310 is 10 degrees or more (step S108).
  • step S108 If it is determined that the temperature of the cold storage device 310 is 10 degrees or higher (step S108: Yes), the information processing device 10 then switches the charge control mode to a cold storage priority mode, for example, and cools the latent heat storage material 311 of the cold storage device 310 (step S109). After step S109 is executed, the charge control process shown in FIG. 14 also ends, but the charge control process shown in FIG. 14 is repeated as needed.
  • step S108: No if it is determined that the temperature of the cold storage device 310 is less than 10 degrees (step S108: No), or if it is determined in step S107 that the remaining charge of the secondary battery 500 is less than 50% (step S107: No), then the information processing device 10, for example, switches the charge control mode to a normal charge mode and controls the CPU/GPU 210, the secondary battery 500, and the cold storage device 310 to receive power supply from the external power source 90 (step S110). After step S110 is executed, the charge control process shown in FIG. 14 is also terminated, but the charge control process shown in FIG. 14 is repeated as necessary.
  • FIG. 15 is a flowchart showing the flow of the heat exchange control process according to this embodiment.
  • the heat exchange control process is a process that performs control so that the latent heat storage material 311 of the cold storage device 310 and the heat source 410 are thermally connected by a highly thermally conductive material, which is a thermal path 450, when it is determined that cooling of the heat source 410 is necessary based on the operating state of a specific application and the charging control mode.
  • the information processing device 10 determines whether the operating state of a specific application is, for example, in the foreground state (step S201).
  • step S201 If it is determined that the operating state of the specific application is the foreground state (step S201: Yes), the information processing device 10 then determines, for example, whether cooling of the heat source 410 is required (step S202).
  • step S202 If it is determined that cooling of the heat generation source 410 is necessary (step S202: Yes), the information processing device 10 then switches to a state with heat exchange, for example, and performs heat exchange between the cold storage device 310 and the heat generation source 410 (step S203). After step S203 is executed, the heat exchange control process shown in FIG. 15 ends, but strictly speaking, the heat exchange control process shown in FIG. 15 is repeated from time to time, and heat exchange between the cold storage device 310 and the heat generation source 410 is controlled based on the operating state of a specific application and the charging control mode.
  • step S204 the information processing device 10 switches, for example, to a state without heat exchange. In this case, heat exchange between the cold storage device 310 and the heat source 410 is not performed.
  • step S204 the heat exchange control process shown in FIG. 15 is also terminated, but the heat exchange control process shown in FIG. 15 is repeated as necessary.
  • step S201 determines, for example, whether the charging control mode is the cold storage priority mode (step S205).
  • step S206 If it is determined that cooling of the charging circuit is necessary (step S206: Yes), the information processing device 10 then switches to a state with heat exchange, for example, and performs heat exchange between the cold storage device 310 and the charging circuit, which is the heat source 410 (step S207). After step S207 is executed, the heat exchange control process shown in FIG. 15 also ends, but the heat exchange control process shown in FIG. 15 is repeated as necessary.
  • step S206 determines that cooling of the charging circuit is not necessary
  • step S205 determines whether the charging control mode is the cold storage priority mode. If it is determined in step S205 that the charging control mode is the cold storage priority mode (step S205: Yes), then the information processing device 10 switches, for example, to a state without heat exchange (step S208). After step S208 is executed, the heat exchange control process shown in FIG. 15 is also terminated, but the heat exchange control process shown in FIG. 15 is repeated as necessary.
  • a hardware configuration example of the information processing device 10 according to the present embodiment will be described.
  • the information processing device 10 according to the present embodiment described above is realized, for example, by a computer 1000 having a configuration as shown in Fig. 16.
  • Fig. 16 is a block diagram showing a hardware configuration example of the information processing device 10 according to the present embodiment.
  • Computer 1000 has a CPU 1100, RAM 1200, ROM 1300, HDD (Hard Disk Drive) 1400, a communication interface 1500, and an input/output interface 1600. Each part of computer 1000 is connected by a bus 1050.
  • the CPU 1100 operates based on the programs stored in the ROM 1300 or the HDD 1400, and controls each component. For example, the CPU 1100 loads the programs stored in the ROM 1300 or the HDD 1400 into the RAM 1200, and executes processes corresponding to the various programs.
  • the ROM 1300 stores boot programs such as the Basic Input Output System (BIOS) that is executed by the CPU 1100 when the computer 1000 starts up, as well as programs that depend on the hardware of the computer 1000.
  • BIOS Basic Input Output System
  • HDD 1400 is a computer-readable recording medium that non-temporarily records programs executed by CPU 1100 and data used by such programs. Specifically, HDD 1400 is a recording medium that records the program according to this embodiment, which is an example of program data 1450.
  • the communication interface 1500 is an interface for connecting the computer 1000 to an external network 1550 (e.g., the Internet).
  • the CPU 1100 receives data from other information processing devices, etc., and transmits data generated by the CPU 1100 to other information processing devices, etc., via the communication interface 1500.
  • the input/output interface 1600 is an interface for connecting the input/output device 1650 and the computer 1000.
  • the CPU 1100 receives data from an input device such as a keyboard or a mouse via the input/output interface 1600.
  • the CPU 1100 also transmits data to an output device such as a display, a speaker, or a printer via the input/output interface 1600.
  • the input/output interface 1600 may also function as a media interface for reading programs and the like recorded on a specific recording medium.
  • the specific recording medium is, for example, an optical recording medium such as a DVD (registered trademark) (Digital Versatile Disc) or a PD (Phase change rewritable Disk), a magneto-optical recording medium such as an MO (Magneto-Optical disk), a tape medium, a magnetic recording medium, or a semiconductor memory.
  • an optical recording medium such as a DVD (registered trademark) (Digital Versatile Disc) or a PD (Phase change rewritable Disk)
  • a magneto-optical recording medium such as an MO (Magneto-Optical disk)
  • a tape medium such as a magnetic tape, a magnetic recording medium, or a semiconductor memory.
  • the CPU 1100 of the computer 1000 executes the programs loaded onto the RAM 1200, thereby executing the processes of each processing unit such as the control unit 200 shown in FIG. 3.
  • the HDD 1400 also stores the programs according to this embodiment and data in the storage unit 130.
  • the CPU 1100 reads and executes the program data 1450 from the HDD 1400, but as another example, these programs may be obtained from another information processing device via the external network 1550.
  • the information processing device 10 equipped with the secondary battery 500 and the cold storage device 310 determines whether the processing capacity of the information processing device 10 is limited due to heat generation, and determines whether or not to cool the latent heat storage material 311 of the cold storage device 310 based on the charging state of the secondary battery 500. If it is determined that the processing capacity is limited due to heat generation, a process of exchanging heat between the latent heat storage material 311 and the heat source 410 is performed.
  • the information processing device 10 can maintain for as long as possible a state in which a decrease in the processing speed of the CPU/GPU due to heat generation is unlikely to occur by controlling the cooling of the cold storage device 310 and the charging of the secondary battery 500.
  • An information processing device including a secondary battery and a cold storage device, determining whether the processing capacity of the information processing device is limited due to heat generation; determining whether or not to cool the latent heat storage material of the cold storage device based on a charging state of the secondary battery; an information processing device comprising: a control unit that executes a process of exchanging heat between the latent heat storage material and a heat source when it is determined that the processing capacity is limited by heat generation.
  • the process of determining whether or not to cool the latent heat storage material includes: The information processing device according to (1), further comprising a process for determining whether or not to prioritize cooling of the latent heat storage material over charging of the secondary battery, based on at least one of a remaining charge of the secondary battery and a temperature of the cold storage device. (3) The control unit determining whether or not to cool the heat source based on at least one of an activation state of a predetermined application and a heat generation condition of the heat source; The information processing device according to (1) or (2), further comprising: a process of performing heat exchange between the latent heat storage material and the heat source when it is determined that cooling should be performed on the heat source.
  • An information processing device including a secondary battery and a cold storage device, determining whether the processing capacity of the information processing device is limited due to heat generation; determining whether or not to cool the latent heat storage material of the cold storage device based on a charging state of the secondary battery; a program for executing a process of exchanging heat between the latent heat storage material and a heat source when it is determined that the processing capacity is limited by heat generation.
  • An information processing device including a secondary battery and a cold storage device, determining whether the processing capacity of the information processing device is limited due to heat generation; determining whether or not to cool the latent heat storage material of the cold storage device based on a charging state of the secondary battery; When it is determined that the processing capacity is limited by heat generation, a process of exchanging heat between the latent heat storage material and a heat source is executed.

Landscapes

  • Charge And Discharge Circuits For Batteries Or The Like (AREA)

Abstract

La présente invention porte sur un dispositif de traitement d'informations comprenant une batterie secondaire et un dispositif de stockage à froid qui détermine si la capacité de traitement du dispositif de traitement d'informations est limitée par la génération de chaleur, détermine s'il faut refroidir un matériau de stockage de chaleur latente du dispositif de stockage à froid en fonction de l'état de charge de la batterie secondaire, et exécute un processus pour effectuer un échange de chaleur entre le matériau de stockage de chaleur latente et une source de génération de chaleur s'il est déterminé que la capacité de traitement est limitée par la génération de chaleur. Ainsi, le dispositif de traitement d'informations commande le refroidissement du dispositif de stockage à froid et la charge de la batterie secondaire, ce qui permet de maintenir, le plus longtemps possible, un état dans lequel des diminutions de la vitesse de traitement d'une UC/d'un processeur graphique en raison de la génération de chaleur ne se produisent pas facilement.
PCT/JP2024/018559 2023-05-30 2024-05-20 Dispositif de traitement d'informations, programme et procédé de traitement d'informations Pending WO2024247792A1 (fr)

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Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2006092894A (ja) * 2004-09-24 2006-04-06 Fuji Photo Film Co Ltd 電池パック、電子機器、充電器、電池駆動式電子機器システム
JP2015029036A (ja) * 2013-06-27 2015-02-12 ソニー株式会社 電子機器および電子機器の制御方法
JP2023062592A (ja) * 2021-10-21 2023-05-08 キヤノン株式会社 電子機器、制御方法及びプログラム

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2006092894A (ja) * 2004-09-24 2006-04-06 Fuji Photo Film Co Ltd 電池パック、電子機器、充電器、電池駆動式電子機器システム
JP2015029036A (ja) * 2013-06-27 2015-02-12 ソニー株式会社 電子機器および電子機器の制御方法
JP2023062592A (ja) * 2021-10-21 2023-05-08 キヤノン株式会社 電子機器、制御方法及びプログラム

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