CN106786912A - The charge protection method and device of helmet charge protection method, electronic equipment - Google Patents

Abstract

The invention discloses a charging protection method for a head-mounted device, a charging protection method and a device for an electronic device. The charging protection method for a head-mounted device includes: directly communicating with a power management chip of the head-mounted device and a charging plug of the head-mounted device, Use the power management chip to monitor the connection of the charging plug, and when it detects that the charging plug is connected to an external power source, send an interrupt message to the microprocessor of the headset; after receiving the interrupt message from the power management chip, the microprocessor obtains the head The current wearing state of the wearable device. If it is in the wearing state, calculate the current value required for the normal operation of the head-mounted device and return it to the power management chip for the normal operation of the device, avoiding dangers such as explosion caused by overheating of the battery; if it is not wearing the state, then The current value that determines the normal charging state is returned to the power management chip; the power management chip controls the charging plug to input current according to the current value returned by the microprocessor.

Description

Charging protection method for headset, charging protection method and device for electronic equipment

technical field

The invention relates to the technical field of charging protection, in particular to a charging protection method for a head-mounted device, a charging protection method and a device for an electronic device.

Background technique

With the rapid development of the virtual reality (Virtual Reality, VR) industry, head-mounted devices are used by more and more users as a display platform for VR resources (pictures, videos, games, etc.). However, since VR resources have higher requirements on the processing capability of the device, the processor of the device needs to run at a higher frequency, so the device consumes a lot of battery power, causing the device to often be in a state of no power, so many users It will be used while charging.

This will bring some problems. Not only will the service life of the battery be reduced, but also when the device is used while charging, the battery will generate a lot of heat, which may explode when it reaches a certain level. Accidents happen and thus can cause great harm to the user. Similarly, electronic devices such as mobile phones and tablet computers that consume a large amount of battery power also face the same problem. How to add a charging protection measure has become a key point for headsets and even all electronic devices with large battery consumption.

Contents of the invention

In view of the above problems, the present invention provides a charging protection method for a head-mounted device, a charging protection method and device for an electronic device, to solve the problem that the battery generates a large amount of heat when the user uses the existing head-mounted device and electronic device while charging, which is easy Problems causing danger such as explosion.

In order to achieve the above object, technical solution of the present invention is achieved in that way:

In one aspect, the present invention provides a charging protection method for a head-mounted device, the head-mounted device includes a microprocessor, a power management chip, a built-in battery, a charging plug and a proximity sensor, and the method includes:

directly communicate the power management chip with the charging plug, use the power management chip to monitor the connection of the charging plug, and send an interrupt message to the microprocessor when it is detected that the charging plug is connected to an external power supply device;

After receiving the interrupt message from the power management chip, the microprocessor acquires the current wearing state of the head-mounted device, and if it is in the wearing state, calculates the current value required for the normal operation of the head-mounted device and returns to the power management chip; if it is not worn, then determine the current value of the normal charging state and return it to the power management chip;

The power management chip controls the charging plug to input current according to the current value returned by the microprocessor.

On the other hand, the present invention also provides a charging protection method for an electronic device, where the electronic device includes a built-in battery and a charging plug; the method includes:

Detecting whether the electronic device is being used when it is detected that the charging plug of the electronic device is connected to an external power source;

If it is being used, calculate the current value required for the normal operation of the electronic device according to the use state of the electronic device, and control the charging plug to input current according to the current value required for the normal operation of the electronic device;

If it is not used, obtain the maximum input current value supported by the charging plug and the maximum charging current value allowed by the built-in battery respectively, determine the smaller current value from the two obtained current values, and control the charging The plug inputs current according to the smaller current value.

In another aspect, the present invention also provides a charging protection device for an electronic device, the electronic device includes a built-in battery and a charging plug; the device includes:

A detection unit is used to detect whether the electronic device is being used when the charging plug of the electronic device is detected to be connected to an external power source;

The first current control unit is used to calculate the current value required for the normal operation of the electronic device according to the use state of the electronic device when the electronic device is in use, and control the charging plug to The current value input current required for normal operation;

The second current control unit is used to respectively obtain the maximum input current value supported by the charging plug and the maximum charging current value allowed by the built-in battery when the electronic device is not in use, and determine from the two obtained current values output a smaller current value, and control the charging plug to input current according to the smaller current value.

The beneficial effects of the present invention are: the present invention provides a charging protection method for a head-mounted device. The microprocessor returns a specific current value to the power management chip according to the wearing state of the head-mounted device. The current value required for the normal operation of the device is returned to the power management chip. If it is not worn, the current value determined to be in the normal charging state is returned to the power management chip; the power management chip controls the charging plug to input the current value returned by the microprocessor. Current, when worn, the input current is small and no current flows into the built-in battery, which avoids dangers such as battery overheating and explosion, and at the same time prolongs the service life of the battery; when not worn, the input current is relatively larger, which is convenient for fast charging of the device.

Further, the present invention provides a charging protection method and device for electronic equipment. When it is detected that the charging plug of the electronic equipment is connected to an external power source, it detects whether the electronic equipment is being used, and if it is being used, calculates The current value required for the normal operation of the electronic device controls the input current of the charging plug according to the current value required for the normal operation of the electronic device. At this time, the input current is small and no current flows into the built-in battery, so as to avoid explosion caused by overheating of the battery and other dangers, while prolonging the service life of the battery; if it is not used, obtain the maximum input current value supported by the charging plug and the maximum charging current value allowed by the built-in battery, and determine from the obtained two current values Smaller current value, control the charging plug to input current according to the smaller current value, while ensuring that the input current is as large as possible, at the same time avoiding the current exceeding the current upper limit allowed by the charging plug or battery. At this time, the input current is relative to Electronics are larger when in use, allowing for quick charging of the device.

Description of drawings

FIG. 1 is a flowchart of a charging protection method for a head-mounted device according to Embodiment 1 of the present invention;

2 is a logical block diagram of a charging protection method for a head-mounted device according to Embodiment 1 of the present invention;

3 is a flow chart of a charging protection method for an electronic device according to Embodiment 2 of the present invention;

FIG. 4 is a schematic diagram of a charging protection device for electronic equipment according to Embodiment 3 of the present invention.

detailed description

In order to make the object, technical solution and advantages of the present invention clearer, the implementation manner of the present invention will be further described in detail below in conjunction with the accompanying drawings.

Embodiment one

Embodiment 1 of the present invention provides a charging protection method for a head-mounted device. The head-mounted device includes a microprocessor, a power management chip, a built-in battery, a charging plug, and a proximity sensor. As shown in FIG. 1 , the method includes:

Step S110: Communicate directly with the power management chip and the charging plug, use the power management chip to monitor the connection of the charging plug, and send an interrupt message to the charging plug when it is detected that the charging plug is connected to an external power source said microprocessor;

Step S120: After receiving the interrupt message from the power management chip, the microprocessor acquires the current wearing state of the head-mounted device, and if it is in the wearing state, calculates the power required for the normal operation of the head-mounted device. The current value is returned to the power management chip; if it is not worn, the current value determined to be in a normal charging state is returned to the power management chip;

Step S130: the power management chip controls the charging plug to input current according to the current value returned by the microprocessor.

If the head-mounted device is in the wearing state, the charging plug inputs current according to the current value required for the normal operation of the head-mounted device, and the power management chip uses all the input current to supply the head-mounted device. The device operates normally, and no battery flows to the built-in battery, so that the user can continue to use the device during charging, avoid dangers such as explosion caused by overheating of the built-in battery, and prolong the service life of the battery.

If the head-mounted device is in an unworn state, the charging plug inputs current according to a current value in a normal charging state. At this time, if the head-mounted device is in the shutdown state, the power management chip uses all the input current to charge the built-in battery; if the head-mounted device is in the standby state, the power management chip allocates The current required for the standby operation of the head-mounted device is used for the standby operation of the electronic device, and the remaining current is distributed to the built-in battery for charging. Compared with the wearing state, the input current of the head-mounted device is increased, so that the device can be charged quickly. In the embodiment of the present invention, if it is in the unworn state as described in step S120, returning the current value determined to be in a normal charging state to the power management chip includes:

The microprocessor respectively acquires the maximum input current value supported by the charging plug and the maximum charging current value allowed by the built-in battery, and determines the smaller current value from the two acquired current values as the current in the normal charging state The value is returned to the power management chip to ensure that the input current is as large as possible while preventing the current from exceeding the current upper limit allowed by the charging plug or the battery, so that the device can be quickly charged with a large current.

In the embodiment of the present invention, the maximum input current value supported by the charging plug and the maximum charging current value allowed by the built-in battery are both greater than the current value required for the normal operation of the head-mounted device.

The following takes Table 1 as an example for specific description.

Table 1

In Table 1, if the microprocessor obtains that the head-mounted device is in the wearing state, it determines the current value of 0.5A required for the normal operation of the head-mounted device, and returns it to the power management chip. The power management chip controls the charging plug to input current at a current value of 0.5A.

If the microprocessor obtains that the head-mounted device is not worn, when the maximum input current value supported by the charging plug is 4A, and the maximum charging current value allowed by the built-in battery is 3A, then the The maximum charging current value of 3A allowed by the built-in battery is returned to the power management chip as the current value in the normal charging state. When the maximum input current value supported by the charging plug is 2A, and the maximum charging current value allowed by the built-in battery is 3A, then the maximum input current value 2A supported by the charging plug is returned to the The power management chip.

When the charging plug inputs current according to the current value of the normal charging state, if the head-mounted device is in the off state, the power management chip uses all the input current (3A or 2A in Table 1) for For charging the built-in battery; if the head-mounted device is in a standby state, the power management chip distributes the current required for the standby operation of the head-mounted device, that is, the current value in Table 1 is 0.3A, for the electronic device to stand by Running, the remaining current is distributed to the built-in battery charging, for example, when the input current is 3A, the remaining 2.7A current is distributed to the built-in battery charging, when the input current is 2A, the remaining 1.7A current is distributed to the built-in battery charging.

In an embodiment of the present invention, the method shown in FIG. 1 also includes:

A proximity sensor is arranged on the head-mounted device close to the wearing position of the user's head, and the proximity sensor is used to detect whether the head-mounted device is in the wearing state or not, and the detection result is sent to the microprocessor;

Specifically, the proximity sensor detects whether an object approaches itself within a preset distance;

After receiving the interrupt message from the power management chip, the microprocessor judges according to the detection result sent by the proximity sensor, and obtains the current wearing state of the head-mounted device.

The processor determines that the head-mounted device is in the wearing state when the proximity sensor detects an object approaching itself within a preset distance; when the proximity sensor does not detect an object approaching itself within a preset distance , it is determined that the head-mounted device is not worn.

Taking two specific use cases as examples, when the headset is in the charging state and is not worn, and the user wears the headset, the proximity sensor generates an interruption and detects that the headset is in the wearing state at this time. Then the processor calculates the current value required for the normal operation of the headset and returns it to the power management chip, and the power management chip controls the charging plug to input current according to the current value required for the normal operation of the headset;

When the headset is in the charging state and has been worn, and the user takes off the headset, the proximity sensor generates an interrupt, and detects that the headset is not worn at this time, and the processor calculates The current value in the normal charging state is returned to the power management chip, and the power management chip controls the charging plug to input current according to the current value in the normal charging state. As can be seen from the above, the embodiment of the present invention only needs to install a proximity sensor on the head-mounted device, and cooperate with the microprocessor and the power management chip to realize the charging protection function of the device, and the hardware cost is relatively low.

To sum up, the logic block diagram of the charging protection method for head-mounted devices according to Embodiment 1 of the present invention is shown in Figure 2. The power management chip is used to monitor the connection status of the charging plug, that is, whether it is connected to an external power source. When connected to an external power supply, an interrupt message is sent to the microprocessor; after receiving the interrupt message from the power management chip, the microprocessor obtains the current wearing status of the head-mounted device, that is, whether it is worn, and if it is in the wearing status, calculates the head-mounted device. The current value required for the normal operation of the worn device is returned to the power management chip; if it is not worn, the current value determined to be in the normal charging state is returned to the power management chip; the power management chip controls the charging plug according to the current value returned by the microprocessor Input Current.

To sum up, the first embodiment of the present invention provides a charging protection method for a head-mounted device. The microprocessor returns a specific current value to the power management chip according to the wearing state of the head-mounted device. If the head-mounted device is in the wearing state, it calculates The current value required for the normal operation of the headset is returned to the power management chip. If it is not worn, the current value determined to be in the normal charging state is returned to the power management chip; the power management chip controls the charging plug according to the current returned by the microprocessor. When wearing, the input current is small and no current flows into the built-in battery, avoiding the danger of battery overheating and explosion, and prolonging the service life of the battery; the input current of the headset is larger when wearing, which is convenient for fast charging of the device .

Embodiment two

Embodiment 2 of the present invention provides a charging protection method for an electronic device, where the electronic device includes a built-in battery and a charging plug; as shown in FIG. 3 , the method includes:

Step S210: When it is detected that the charging plug of the electronic device is connected to an external power source, detect whether the electronic device is being used;

In one embodiment of the present invention, the detecting whether the electronic device is being used includes:

When it is detected that the electronic device is in a power-off or standby state, it is determined that the electronic device is not in use; when it is detected that the electronic device is not in a power-off and non-standby state, it is determined that the electronic device is in use.

Step S220: If it is being used, calculate the current value required for the normal operation of the electronic device according to the use status of the electronic device, and control the charging plug to input the current value required for the normal operation of the electronic device current;

Step S230: If not in use, respectively obtain the maximum input current value supported by the charging plug and the maximum charging current value allowed by the built-in battery, determine the smaller current value from the two obtained current values, and control The charging plug inputs current according to the smaller current value, while ensuring that the input current is as large as possible while preventing the current from exceeding the current upper limit allowed by the charging plug or the battery, so as to facilitate rapid charging of the device with a large current. .

If the electronic device is being used, after the charging plug inputs current according to the current value required for the normal operation of the electronic device, all the input current is used to supply the normal operation of the electronic device, and no battery flows The built-in battery allows the user to continue to use the device during charging, avoids dangers such as explosion caused by overheating of the built-in battery, and prolongs the service life of the battery.

If the electronic device is not in use, after the charging plug inputs current according to the smaller current value among the maximum input current value supported by the charging plug and the maximum charging current value allowed by the built-in battery, at this time, if When the electronic device is in the shutdown state, all the input current is used for charging the built-in battery; if the electronic device is in the standby state, then the current required for the standby operation of the electronic device is allocated for the standby operation of the electronic device Running, the remaining current is distributed to the built-in battery to charge, which increases the input current compared to when the device is in use, which is convenient for fast charging of the device.

In the embodiment of the present invention, the maximum input current value supported by the charging plug and the maximum charging current value allowed by the built-in battery are both greater than the current value required by the electronic device for normal operation.

Embodiment three

Embodiment 3 of the present invention provides a charging protection device for electronic equipment, the electronic equipment includes a built-in battery and a charging plug; as shown in Figure 4, the charging protection device includes:

A detection unit 110 is used to detect whether the electronic device is being used when the charging plug of the electronic device is connected to an external power source;

The first current control unit 120 is used to calculate the current value required for the normal operation of the electronic device according to the use status of the electronic device when the electronic device is in use, and control the charging plug to input current according to the current value required for the normal operation of the electronic device ;

The second current control unit 130 is used to respectively obtain the maximum input current value supported by the charging plug and the maximum charging current value allowed by the built-in battery when the electronic device is not in use, and determine the smaller current from the two obtained current values Value, control the charging plug to input current at a lower current value, while ensuring that the input current is as large as possible while preventing the current from exceeding the current upper limit allowed by the charging plug or battery, it is convenient for the device to quickly charge with a large current.

In the embodiment of the present invention, the maximum input current value supported by the charging plug and the maximum charging current value allowed by the built-in battery are both greater than the current value required by the normal operation of the electronic device.

In the embodiment of the present invention, the detection unit 110 is used to determine that the electronic device is not in use when it is detected that the electronic device is in a shutdown or standby state; Judging that electronic equipment is used.

To sum up, the charging protection method and device for an electronic device provided by Embodiments 2 to 3 of the present invention detects whether the electronic device is being used when the charging plug of the electronic device is detected to be connected to an external power supply. If it is being used, calculate the current value required for the normal operation of the electronic device, and control the charging plug to input current according to the current value required for the normal operation of the electronic device. At this time, the input current is small and no current flows in The built-in battery avoids the danger of explosion caused by overheating of the battery, and prolongs the service life of the battery; if it is not used, obtain the maximum input current value supported by the charging plug and the maximum charging current value allowed by the built-in battery, and obtain from The smaller current value is determined from the two current values, and the charging plug is controlled to input current according to the smaller current value. At this time, the input current is larger than that of the device when it is in use, so that the device can be quickly charged.

The above descriptions are only specific implementations of the present invention. Under the above teaching of the present invention, those skilled in the art can make other improvements or modifications on the basis of the above embodiments. Those skilled in the art should understand that the above specific description is only to better explain the object of the present invention, and the protection scope of the present invention should be determined by the protection scope of the claims.

Claims (10)

1. A charging protection method for a head-mounted device, said head-mounted device comprising a microprocessor, a power management chip, a built-in battery, a charging plug and a proximity sensor, characterized in that said method comprises: directly communicate the power management chip with the charging plug, use the power management chip to monitor the connection of the charging plug, and send an interrupt message to the microprocessor when it is detected that the charging plug is connected to an external power supply device; After receiving the interrupt message from the power management chip, the microprocessor acquires the current wearing state of the head-mounted device, and if it is in the wearing state, calculates the current value required for the normal operation of the head-mounted device and returns to the power management chip; if it is not worn, then determine the current value of the normal charging state and return it to the power management chip; The power management chip controls the charging plug to input current according to the current value returned by the microprocessor. 2. The charging protection method of a head-mounted device according to claim 1, wherein the method further comprises: A proximity sensor is arranged on the head-mounted device close to the wearing position of the user's head, and the proximity sensor is used to detect whether the head-mounted device is in the wearing state or not, and the detection result is sent to the microprocessor; After receiving the interrupt message from the power management chip, the microprocessor judges according to the detection result sent by the proximity sensor, and obtains the current wearing state of the head-mounted device. 3. The charging protection method of the head-mounted device according to claim 1 or 2, characterized in that, if it is in the unworn state, then determining the current value of the normal charging state and returning it to the power management chip includes: The microprocessor respectively acquires the maximum input current value supported by the charging plug and the maximum charging current value allowed by the built-in battery, and determines the smaller current value from the two acquired current values as the current in the normal charging state value is returned to the power management chip. 4. The charging protection method for a head-mounted device according to claim 3, wherein the maximum input current value supported by the charging plug and the maximum charging current value allowed by the built-in battery are both larger than the head-mounted device Current value required for normal operation. 5. A charging protection method for an electronic device, the electronic device comprising a built-in battery and a charging plug; it is characterized in that the method comprises: Detecting whether the electronic device is being used when it is detected that the charging plug of the electronic device is connected to an external power source; If it is being used, calculate the current value required for the normal operation of the electronic device according to the use state of the electronic device, and control the charging plug to input current according to the current value required for the normal operation of the electronic device; If it is not used, obtain the maximum input current value supported by the charging plug and the maximum charging current value allowed by the built-in battery respectively, determine the smaller current value from the two obtained current values, and control the charging The plug inputs current according to the smaller current value. 6. The charging protection method for electronic equipment according to claim 5, wherein the maximum input current value supported by the charging plug and the maximum charging current value allowed by the built-in battery are both greater than the normal operation of the electronic equipment desired current value. 7. The charging protection method of an electronic device according to claim 6, wherein the detecting whether the electronic device is being used comprises: When it is detected that the electronic device is in a power-off or standby state, it is determined that the electronic device is not in use; when it is detected that the electronic device is not in a power-off and non-standby state, it is determined that the electronic device is in use. 8. A charging protection device for an electronic device, the electronic device includes a built-in battery and a charging plug; it is characterized in that the device includes: A detection unit is used to detect whether the electronic device is being used when the charging plug of the electronic device is detected to be connected to an external power source; The first current control unit is used to calculate the current value required for the normal operation of the electronic device according to the use state of the electronic device when the electronic device is in use, and control the charging plug to The current value input current required for normal operation; The second current control unit is used to respectively obtain the maximum input current value supported by the charging plug and the maximum charging current value allowed by the built-in battery when the electronic device is not in use, and determine from the two obtained current values output a smaller current value, and control the charging plug to input current according to the smaller current value. 9. The charging protection device for electronic equipment according to claim 8, wherein the maximum input current value supported by the charging plug and the maximum charging current value allowed by the built-in battery are both greater than the normal operation of the electronic equipment desired current value. 10. The charging protection device for electronic equipment according to claim 9, wherein the use detection unit is specifically configured to determine that the electronic equipment is not is used; when it is detected that the electronic device is in a non-shutdown or non-standby state, it is determined that the electronic device is in use.