WO2021229858A1 - Motor unit, temperature adjustment system, control method for temperature adjustment system, and vehicle - Google Patents

Abstract

A motor unit 30 comprises: a motor 33 which drives a vehicle 10; and a motor-side pipeline 30M through which a first heat medium heated by a heater 101 flows and which carries out heat exchange between the first heat medium and the motor 33. The motor-side pipeline 30M is connected to a battery-side pipeline 20B which carries out heat exchange between the first heat medium and a battery 20 of the vehicle 10. Flow rates of the first heat medium which flows to the motor-side pipeline 30M and the battery-side pipeline 20B are adjusted by a mixing valve 500 and pumps 110. The first heat medium carries out heat exchange with a second heat medium which flows through an air-conditioning-side pipeline 40A of an air conditioning device 40 of the vehicle 10, and is different from the first heat medium.

Description

Motor unit, temperature control system, temperature control system control method, and vehicle

The present invention relates to a motor unit, a temperature control system, a control method for the temperature control system, and a vehicle.

Japanese Patent Application Laid-Open No. 6-24238 discloses a battery temperature control device that keeps the temperature of the battery of a vehicle at an appropriate temperature. In this battery temperature control device, the battery, the motor, and the interior of the vehicle are heated by using a common heater and a heat medium.

Japanese Publication No. 6-24238 Japanese Patent Application Laid-Open No. 6-24238

However, in the battery temperature control device of Patent Document 1, since the temperature control of the battery, the motor, and the interior of the vehicle is controlled by using a common heat medium, for example, the temperature of the interior of the vehicle is lowered while the motor and the battery are controlled. When you want to raise the temperature of the battery, it is difficult to adjust the temperature, so it is difficult to operate each configuration efficiently.

The present invention has been made in view of the above problems, and an object of the present invention is to provide a motor unit, a temperature control system, a control method for the temperature control system, and a vehicle capable of efficiently operating an air conditioner, a battery, and a motor, respectively.

The motor unit that solves the above problems includes a motor that drives the vehicle, a motor side pipeline through which a first heat medium heated by a heater flows, and heat exchange between the first heat medium and the motor. To prepare for. The motor side pipeline is connected to a battery side pipeline that exchanges heat between the first heat medium and the battery of the vehicle. The flow rate of the first heat medium flowing through the motor side pipeline and the battery side pipeline is adjusted by a valve and a pump, and the first heat medium flows through the air conditioning side pipeline of the air conditioning device of the vehicle. Heat is exchanged with a second heat medium, which is different from the first heat medium.

In the temperature control system that solves the above problems, a motor that drives the vehicle, a heater that heats the first heat medium, and the first heat medium heated by the heater flow, and the first heat medium and the battery of the vehicle flow. Adjust the flow rate of the battery side pipeline that exchanges heat between the first heat medium, the motor pipeline that exchanges heat between the first heat medium and the battery, and the first heat medium that flows through the battery side pipeline. It is equipped with a valve and a pump. The first heat medium flows through the air-conditioning side pipeline of the air-conditioning device of the vehicle and exchanges heat with a second heat medium different from the first heat medium.

The control method of the temperature control system for solving the above problems is that the temperature control system is heated by a battery, a heater, a motor, a first heat medium, a motor side conduit for heat exchange between the motor, and the heater. It is a control method of a temperature control system including a battery side pipeline for heat exchange between the first heat medium and the battery, and a control device for controlling the heater, wherein the control device is the battery. The step of comparing the temperature of the first heat medium flowing through the heat with the inefficiency temperature at which the operating efficiency of the battery is set lower than the appropriate temperature of the battery and the operating efficiency of the battery is lowered, and the process of flowing into the battery. When the temperature of the first heat medium is lower than the inefficiency temperature, there is a step of operating the heater to heat the battery.

The vehicle that solves the above problems includes at least one of the motor unit, the temperature control system, and the control method of the temperature control system.

According to the present invention, it is possible to provide a motor unit, a temperature control system, a control method for the temperature control system, and a vehicle capable of efficiently operating the air conditioner, the battery, and the motor, respectively.

FIG. 1 is a schematic diagram of a temperature control system provided in a vehicle according to the first embodiment. FIG. 2 is a schematic diagram of the air conditioner according to the first embodiment. FIG. 3 is a flowchart showing a control flow in the first embodiment. FIG. 4 is a schematic diagram of a temperature control system provided in the vehicle according to the second embodiment. FIG. 5 is a flowchart showing a control flow in the second embodiment. FIG. 6 is a schematic diagram of a temperature control system provided in the vehicle according to the third embodiment.

<First Embodiment>
Hereinafter, the motor unit, the temperature control system, the control method of the temperature control system, and the vehicle according to the first embodiment of the present invention will be described with reference to the drawings.

FIG. 1 is a schematic diagram of a temperature control system S1 provided in a vehicle.

As shown in FIG. 1, the vehicle 10 includes a battery 20 and a motor unit 30 that converts the direct current of the battery 20 into a driving force for traveling. The vehicle 10 is an electric vehicle.

The motor unit 30 has an inverter 32 connected to the power supply device 31 and a motor 33.

The power supply device 31 has an AC / DC conversion circuit 31A and a DC / DC conversion circuit 31B. The AC / DC conversion circuit 31A converts an alternating current supplied from an external power source into a direct current and supplies it to the battery 20. The DC / DC conversion circuit 31B converts the direct current supplied from the battery 20 into a direct current having a different voltage and supplies the direct current to the control device 80 described later. The AC / DC conversion circuit is generally referred to as an in-vehicle charger. The power supply device 31 may have one configuration of the motor unit 30, or may have a configuration provided in the vehicle 10 separately from the motor unit 30.

The inverter 32 converts the direct current of the battery 20 into an alternating current. The inverter 32 is electrically connected to the motor 33. The alternating current converted by the inverter 32 is supplied to the motor 33.

The motor 33 is a motor generator that has both a function as an electric motor and a function as a generator. The motor 33 is connected to a wheel (not shown) of the vehicle 10 via a speed reduction mechanism (not shown) included in the motor unit 30. The motor 33 is driven by an alternating current supplied from the inverter 32 to rotate the wheels. Further, the motor 33 regenerates the rotation of the wheels to generate an alternating current. The generated alternating current is stored in the battery 20 through the inverter 32.

The motor unit 30 has oil as a lubricant so that the deceleration mechanism operates smoothly. Oils perform better at the proper temperature of the oil.

The vehicle 10 includes an air conditioner 40 that consumes the electric power of the battery 20 to air-condition the room. Further, the vehicle 10 includes a battery side pipeline 20B and a motor side pipeline 30M to which each configuration of the battery 20 and the motor unit 30 is connected, an air conditioning side pipeline 40A to which the air conditioner 40 is connected, and these battery side pipes. A first heat exchanger 71 and a second heat exchanger 72 that exchange heat between the passage 20B and the motor side pipeline 30M and the air conditioning side pipeline 40A are provided. Further, the vehicle 10 includes a radiator 50 to which the battery side pipeline 20B and the motor side pipeline 30M are connected. The radiator 50 releases the heat of the battery side pipeline 20B and the motor side pipeline 30M to the outside of the vehicle 10. That is, the radiator 50 is a exchanger that exchanges heat with the outside of the vehicle 10. Further, the vehicle 10 includes a control device 80 that controls each configuration of the battery side pipeline 20B and the motor side pipeline 30M and the drive of the radiator 50.

FIG. 2 is a schematic view showing the air conditioner 40.

As shown in FIG. 2, the air conditioner 40 includes a compressor 41, an indoor heat exchanger 42, an expansion valve 43, and an outdoor heat exchanger 44. The compressor 41, the indoor heat exchanger 42, the expansion valve 43, and the outdoor heat exchanger 44 are connected in series by the air conditioning side pipeline 40A. Further, the air-conditioning side pipeline 40A has a pipeline for connecting the first heat exchanger 71 and the second heat exchanger 72 in parallel to the outdoor heat exchanger 44. A second heat medium flows through the air conditioning side pipeline 40A. In the air conditioning side pipeline 40A, the first heat exchanger 71 is connected to the outdoor heat exchanger 44 in parallel with the first heat exchanger 71 and the second heat exchanger 72. And has a bypass line so as not to pass through the second heat exchanger 72.

The compressor 41 compresses the second heat medium sent from the first heat exchanger 71 and the second heat exchanger 72 or the outdoor heat exchanger 44 to raise the temperature.

The indoor heat exchanger 42 moves the heat of the second heat medium sent from the compressor 41 into the interior of the vehicle 10 to raise the indoor temperature of the vehicle 10.

The expansion valve 43 expands the second heat medium sent from the indoor heat exchanger 42.

The outdoor heat exchanger 44 transfers heat from the outside of the vehicle 10 to the second heat medium sent from the expansion valve 43 to raise the temperature of the second heat medium.

The first heat exchanger 71 and the second heat exchanger 72 transfer heat between the second heat medium sent from the expansion valve 43 and the first heat medium flowing through the battery side pipeline 20B and the motor side pipeline 30M. Let me.

Therefore, the air conditioner 40 can raise the indoor temperature of the vehicle 10 by using the exhaust heat of the temperature control system S1 in addition to raising the indoor temperature of the vehicle 10 by itself.

As shown in FIG. 1, the temperature control system S1 includes a heater 101, a pump 110, a pipeline 200, a connecting pipe 300, a switching valve 400, a mix valve 500, and a one-sided valve 600 in addition to the control device 80.

The heater 101 generates heat when a direct current is supplied from the battery 20.

Pump 110 is a general term for the first pump 111, the second pump 112, and the third pump 113. The pump 110 flows a first heat medium inside the pipeline 200 and the connecting pipe 300 by supplying a direct current from the power supply device 31 or a low-voltage battery (not shown). The low-voltage battery described above is a battery separate from the battery 20 and has a lower voltage than the battery 20.

The pipeline 200 includes the first pipeline 201, the second pipeline 202, the third pipeline 203, the fourth pipeline 204, the fifth pipeline 205, the sixth pipeline 206, the seventh pipeline 207, and the eighth pipeline. Route 208, 9th pipeline 209, 10th pipeline 210, 11th pipeline 211, 12th pipeline 212, 13th pipeline 213, 14th pipeline 214, 15th pipeline 215, 16th pipeline 216 , 17th pipeline 217, 18th pipeline 218, 19th pipeline 219, 20th pipeline 220, and 21st pipeline 221. The first heat medium flows inside the pipeline 200.

The connection pipe 300 includes a first connection pipe 301, a second connection pipe 302, a third connection pipe 303, a fourth connection pipe 304, a fifth connection pipe 305, a sixth connection pipe 306, a seventh connection pipe 307, and an eighth connection. It is a general term for the pipe 308 and the ninth connecting pipe 309. The connecting pipe 300 connects the pipes 200 to each other. The first heat medium flows inside the connecting pipe 300.

The switching valve 400 is a general term for the first three-way switching valve 401, the second three-way switching valve 402, the third three-way switching valve 403, and the two-way switching valve 410. The switching valve 400 is switched between opening and closing by being controlled by the control device 80, respectively. By switching the opening and closing of the switching valve 400, the flow of the first heat medium is switched.

The pipeline 200 has a switching valve 400 whose opening / closing is switched by the control device 80, and a one-sided valve 600 whose opening / closing cannot be switched by the control device 80. On the other hand, the valve 600 is a general term for the first one-way valve 601, the second one-sided valve 602, the third one-sided valve 603, and the fourth one-sided valve 604. These first one-way valve 601 and second one-way valve 602, third one-way valve 603, and fourth one-way valve 604 allow the flow of the first heat medium in one direction and in the opposite direction to the previous one direction. It is a valve that regulates the flow of the first heat medium.

The mix valve 500 connects three pipelines 200, specifically, the second pipeline 202, the third pipeline 203, and the ninth pipeline 209. The opening degree of the mix valve 500 is adjusted by being controlled by the control device 80. The mix valve 500 is a first pipe line 200 that uses the first heat medium flowing from the two pipe lines 200, that is, the second pipe line 202 and the ninth pipe line 209, through the adjustment of the opening degree by the control device 80. 3 Adjust the mixing ratio when sending to the pipeline 203.

Between the heater 101 and the battery 20, the first pipe line 201, the first connection pipe 301, the second pipe line 202, the mix valve 500, the third pipe line 203, the second connection pipe 302, and the fourth pipe line 204 Connected via. The first heat exchanger 71 is provided in the third pipeline 203. The first pump 111 is provided in the fourth pipeline 204. The fourth pipeline 204 is provided with a first temperature detection point P1 for detecting the temperature of the first heat medium between the first pump 111 and the battery 20.

The battery 20 and the heater 101 are connected via the fifth pipe line 205, the third connection pipe 303, the sixth pipe line 206, the fourth connection pipe 304, and the seventh pipe line 207. The first one-sided valve 601 is provided in the sixth pipe line 206. The first one-sided valve 601 allows the flow of the first heat medium from the third connecting pipe 303 to the fourth connecting pipe 304 side, and also allows the flow of the first heat medium from the fourth connecting pipe 304 to the third connecting pipe 303 side. Regulate the flow of.

The first pipe line 201 to the seventh pipe line 207 returning from the heater 101 to the heater 101 via the battery 20 corresponds to the battery side pipe line 20B. The first line 201 to the fourth line 204 from the heater 101 to the battery 20 correspond to the high temperature line 200H. The fifth line 205 to the seventh line 207 from the battery 20 to the heater 101 corresponds to the low temperature line 200L.

The third connecting pipe 303 and the mix valve 500 are connected via the eighth pipe line 208, the first three-way switching valve 401, and the ninth pipe line 209. The mix valve 500 adjusts the mixing ratio when the first heat medium flowing from the second pipe line 202 and the ninth pipe line 209 is sent to the third pipe line 203 through the adjustment of the opening degree by the control device 80. That is, the mix valve 500 adjusts the mixing ratio of the high temperature first heat medium flowing from the second line 202 and the low temperature first heat medium flowing from the ninth line 209, and sends the mixture valve 500 to the third line 203. It is a valve.

Between the first three-way switching valve 401 and the second connecting pipe 302, via the tenth pipe 210, the fifth connecting pipe 305, the eleventh pipe 211, the sixth connecting pipe 306, and the twelfth pipe 212. Be connected. A radiator 50 is provided in the eleventh pipeline 211. A second one-way valve 602 is provided in the twelfth pipeline 212. The second one-sided valve 602 allows the flow of the first heat medium from the sixth connecting pipe 306 to the second connecting pipe 302 side, and also allows the flow of the first heat medium from the second connecting pipe 302 to the sixth connecting pipe 306 side. Regulate the flow of. The first three-way switching valve 401 is in a state where the first heat medium flows from the eighth pipe 208 to the ninth pipe 209 and from the eighth pipe 208 to the tenth pipe 210 through switching of opening and closing by the control device 80. A state in which the first heat medium flows, a state in which the first heat medium flows in both the 8th line 208 to the 9th line 209 and the 10th line 210, and a state in which the 8th line 208 to the 9th line 209 and The state in which the first heat medium does not flow in either of the tenth pipelines 210 is switched.

Between the 6th connecting pipe 306 and the 5th connecting pipe 305, the 13th pipe 213, the 7th connecting pipe 307, the 14th pipe 214, the 2nd three-way switching valve 402, the 15th pipe 215, and the 8th connection It is connected via the pipe 308, the 16th pipe line 216, the 3rd three-way switching valve 403, and the 17th pipe line 217. The thirteenth pipeline 213 is provided with a third one-way valve 603. The third one-sided valve 603 allows the flow of the first heat medium from the sixth connecting pipe 306 to the seventh connecting pipe 307 side, and also allows the flow of the first heat medium from the seventh connecting pipe 307 to the sixth connecting pipe 306 side. Regulate the flow of. The 14th pipeline 214 is provided with a second pump 112, a power supply device 31, and an inverter 32. The 14th pipeline 214 is provided with a second temperature detection point P2 for detecting the temperature of the first heat medium between the second pump 112 and the power supply device 31.

The 3rd three-way switching valve 403 and the 7th connecting pipe 307 are connected via the 18th pipe line 218. A second heat exchanger 72 is provided in the 18th pipeline 218. The third three-way switching valve 403 is in a state where the first heat medium flows from the 16th pipe 216 to the 17th pipe 217 and from the 16th pipe 216 to the 18th pipe 218 through switching of opening and closing by the control device 80. A state in which the first heat medium flows, a state in which the first heat medium flows in both the 16th line 216 to the 17th line 217 and the 18th line 218, and a state in which the 16th line 216 to the 17th line 217 and The state in which the first heat medium does not flow in either of the 18th pipelines 218 is switched.

Between the second three-way switching valve 402 and the eighth connecting pipe 308, via the 19th pipe 219, the 9th connecting pipe 309, the 20th pipe 220, the 10th connecting pipe 310, and the 21st pipe 221. Be connected. A motor 33 is provided in the 20th pipeline 220. The 20th pipeline 220 is provided with a third temperature detection point P3 for detecting the temperature of the first heat medium on the upstream side of the motor 33. The motor 33 is provided with a fourth temperature detection point P4 for detecting the temperature of the oil. A two-way switching valve 410 is provided in the 21st pipeline 221. The two-way switching valve 410 has a state in which the first heat medium flows from the tenth connecting pipe 310 to the eighth connecting pipe 308 side and the tenth connecting pipe 310 to the eighth connecting pipe 308 side through switching of opening and closing by the control device 80. The state where the first heat medium does not flow is switched to. In the two-way switching valve 410, when the first heat medium does not flow from the tenth connecting pipe 310 to the eighth connecting pipe 308 side, the first heat is also generated from the eighth connecting pipe 308 to the tenth connecting pipe 310 side. The medium does not flow. The second three-way switching valve 402 is in a state where the first heat medium flows from the 14th pipe 214 to the 19th pipe 219 and from the 14th pipe 214 to the 15th pipe 215 through switching of opening and closing by the control device 80. A state in which the first heat medium flows, a state in which the first heat medium flows in both the 14th pipe 214 to the 19th pipe 219 and the 15th pipe 215, and the 14th.
The state in which the first heat medium does not flow from the pipeline 214 to either the 19th pipeline 219 or the 15th pipeline 215 is switched.

The first connecting pipe 301 and the ninth connecting pipe 309 are connected via the 22nd pipe line 222. Further, the 10th connecting pipe 310 and the 4th connecting pipe 304 are connected via the 23rd pipe line 223. The 23rd pipeline 223 is provided with a third pump 113 and a fourth one-way valve 604. The fourth one-way valve 604 is provided on the fourth connecting pipe 304 side of the third pump 113. The fourth one-sided valve 604 allows the flow of the first heat medium from the tenth connection pipe 310 to the fourth connection pipe 304 side, and also allows the flow of the first heat medium from the fourth connection pipe 304 to the tenth connection pipe 310 side. Regulate the flow of.

The first pipeline 201, the 22nd pipeline 222, the 20th pipeline 220, the 23rd pipeline 223, and the 7th pipeline 207 returning from the heater 101 to the heater 101 via the motor 33 are motor side pipelines. It corresponds to 30M. The area from the heater 101 to the upstream side of the motor 33 of the first line 201, the 22nd line 222, and the 20th line 220 corresponds to the high temperature line 200H. The 20th pipe 220, the 23rd pipe 223, and the 7th pipe 207 from the motor 33 to the heater 101 correspond to the low temperature pipe 200L.

The heater 101, the pump 110, the switching valve 400, and the mix valve 500 are electrically connected to the control device 80. The control device 80 responds to the temperature of the first heat medium and the temperature of the oil detected at the first temperature detection point P1, the second temperature detection point P2, the third temperature detection point P3, and the fourth temperature detection point P4. , Heater 101, pump 110, switching valve 400, and mix valve 500. The control device 80 adjusts the temperature of the first heat medium flowing through the pipeline 200 and the flow rate of the first heat medium through control to the heater 101, the pump 110, the switching valve 400, and the mix valve 500, thereby adjusting the battery. 20, the power supply device 31, the inverter 32, and the motor 33 are operated efficiently.

The control device 80 stores in advance the battery appropriate temperature T2, which is the temperature band in which the operating efficiency of the battery 20 is the best, and the inefficiency temperature T1, which is the temperature at which the operating efficiency of the battery 20 is extremely low. The inefficiency temperature T1 is a temperature lower than the battery appropriate temperature T2. Further, the control device 80 also stores in advance a motor appropriate temperature Tm, which is a temperature band in which the operating efficiency of the motor unit 30 provided with the motor 33 is good.

FIG. 3 is a flowchart showing a control flow of the control device 80. The control by the control device 80 will be described with reference to FIG.

The flowchart shown in FIG. 3 always functions while power is supplied to the control device 80. The power supply to the control device 80 is assumed to be when the ignition of the vehicle 10 is turned on, when the vehicle 10 is charged from an external power source, and the like.

As shown in FIG. 3, the control device 80 detects the temperature at each temperature detection point P1, P2, P3, P4 while receiving the power supply (step S11). After that, the control device 80 determines whether or not the temperature at the first temperature detection point P1 is lower than the battery appropriate temperature T2 (step S12).

If YES in step S12, that is, if the temperature at the first temperature detection point P1 is lower than the battery appropriate temperature T2, the control device 80 determines whether the temperature at the first temperature detection point P1 is lower than the inefficient temperature T1. (Step S13).

If YES in step S13, that is, if the temperature at the first temperature detection point P1 is lower than the inefficiency temperature T1, the control device 80 heats the battery 20 with the heater 101 (step S14). That is, the control device 80 controls the pump 110, the switching valve 400, and the mix valve 500 so that the first heat medium heated by the heater 101 is supplied to the battery 20. After that, the control device 80 returns the process.

If NO in step S13, that is, the temperature at the first temperature detection point P1 is higher than the inefficiency temperature T1, the control device 80 is charging from an external power source and whether or not the motor 33 needs to be heated. Determine (step S15). The control device 80 determines that the motor 33 needs to be heated when the temperature at the fourth temperature detection point P4 is lower than the motor proper temperature Tm, and the temperature at the fourth temperature detection point P4 is higher than the motor proper temperature Tm. If the temperature is high, it is determined that heating to the motor 33 is unnecessary.

YES in step S15, that is, when charging from an external power source and heating of the motor 33 is required, the control device 80 heats the battery 20 and the motor 33 with the heater 101 (step S16). That is, the control device 80 controls the pump 110, the switching valve 400, and the mix valve 500 so that the first heat medium heated by the heater 101 is supplied to the battery 20 and the motor 33, respectively. After that, the control device 80 returns the process.

If NO in step S15, that is, charging is being performed from an external power source and it is not determined that heating to the motor 33 is necessary, the control device 80 shifts the process to step S14 and then returns the process.

When NO in step S12, that is, the temperature at the first temperature detection point P1 is the battery appropriate temperature T2, the control device 80 determines whether or not charging is being performed from the external power source and heating to the motor 33 is necessary. (Step S17).

YES in step S17, that is, when charging from an external power source and heating of the motor 33 is required, the control device 80 heats the motor 33 with the heater 101 (step S18). That is, the control device 80 controls the pump 110, the switching valve 400, and the mix valve 500 so that the first heat medium heated by the heater 101 is supplied to the motor 33. After that, the control device 80 returns the process.

If NO in step S17, that is, charging is being performed from an external power source and it is not determined that heating to the motor 33 is necessary, the control device 80 does not heat both the battery 20 and the motor 33 with the heater 101 (step S19). That is, the control device 80 controls the pump 110, the switching valve 400, and the mix valve 500, respectively, so that the first heat medium heated by the heater 101 is not supplied to both the battery 20 and the motor 33. At this time, the control device 80 may operate the heater 101. When operating the heater 101, the control device 80 sets the pump 110, the switching valve 400, and the mix valve 500 so that the heated first heat medium is sent to the first heat exchanger 71 and the second heat exchanger 72. Control each. After that, the control device 80 returns the process.

It should be noted that the control flow of the control device 80 when heating the motor 33 and the battery 20 is mainly described, and the control flow for cooling the motor 33, the power supply device 31, the inverter 32, and the battery 20 is not described in detail. .. This is to prevent the control flow from becoming complicated and making it difficult to understand the invention part. The outline of the control flow for cooling the motor 33, the power supply device 31, the inverter 32, and the battery 20 will be described later. The control device 80 sends the first heat medium to the first heat exchanger 71, the second heat exchanger 72, or the radiator 50 as needed through the drive of the pump 110 and the switching valve 400, and heats the first heat medium. Is discharged to the outside of the temperature control system S1. As a result, the battery 20, the power supply device 31, the inverter 32, and the motor 33 can be cooled.

Next, the effect of the first embodiment will be described.

The motor unit 30 includes a motor 33 for driving the vehicle 10 and a motor side pipeline 30M through which the first heat medium heated by the heater 101 flows and exchanges heat with the first heat medium. The motor side pipeline 30M is connected to the battery side pipeline 20B that exchanges heat between the first heat medium and the battery 20 of the vehicle 10. The flow rate of the first heat medium flowing through the motor side pipeline 30M and the battery side pipeline 20B is adjusted by the mix valve 500, the pump 110, and the switching valve 400. The first heat medium flows through the air-conditioning side pipeline 40A of the air-conditioning device 40 of the vehicle 10 and exchanges heat with a second heat medium different from the first heat medium.

Further, in the temperature control system S1, the heater 101 that heats the first heat medium and the first heat medium heated by the heater 101 flow, and the heat exchange between the first heat medium and the battery 20 of the vehicle 10 is performed on the battery side. The first heat medium flowing through the motor side pipeline 30M and the battery side pipeline 20B, which are connected to the pipeline 20B and the battery side pipeline 20B and heat the motor 33 that drives the vehicle 10 by heat exchange with the first heat medium. It includes a mix valve 500 and a pump 110 for adjusting the flow rate, and a switching valve 400.

According to this configuration and system, the motor side pipeline 30M and the battery side pipeline 20B through which the first heat medium flows are different from the air conditioning side pipeline 40A through which the second heat medium flows. Thereby, for example, even when it is desired to raise the temperature of the motor 33 or the battery 20 while lowering the indoor temperature of the vehicle 10, the temperature can be easily adjusted. Further, since heat can be exchanged between the first heat medium and the second heat medium, the air conditioner 40 can utilize the exhaust heat of the temperature control system S1. Further, since the flow rate of the first heat medium flowing through the motor side pipeline 30M and the battery side pipeline 20B can also be adjusted, the temperature can be easily adjusted between the motor 33 and the battery 20. In this way, the air conditioner 40, the battery 20, and the motor 33 can each be operated efficiently.

Further, according to this configuration and system, the motor 33 and the battery 20 can be independently heated by one heater 101. As a result, the temperature adjustment of the motor 33 and the temperature adjustment of the battery 20 can be controlled independently.

The motor side pipeline 30M and the battery side pipeline 20B include a high temperature pipeline 200H through which the first heat medium supplied from the heater 101 flows and a low temperature pipeline 200L through which the first heat medium passing through the motor 33 and the battery 20 flows. , And.

The mix valve 500 adjusts the flow rate of the first heat medium flowing from the low temperature pipe line 200L to the high temperature pipe line 200H.

According to this configuration, it is easy to adjust the temperature of the first heat medium flowing through the motor 33 and the battery 20. Therefore, it is easy to operate the motor 33 and the battery 20 at a more efficient temperature.

The mix valve 500 mixes the high-temperature first heat medium flowing through the high-temperature pipe line 200H and the low-temperature first heat medium flowing through the low-temperature pipe line 200L, and sends the mixture to at least one of the motor 33 and the battery 20.

According to this configuration, the first heat medium supplied to the motor 33 and the battery 20 is a mixture of a high temperature and a low temperature first heat medium. Therefore, for example, it is possible to finely control the temperature of the first heat medium supplied to the battery 20 as compared with the case where the high temperature first heat medium and the low temperature first heat medium are supplied while being switched by the valve. be. That is, since the temperature detected at the fourth temperature detection point P4 and the first temperature detection point P1 can be finely controlled, it is easy to adjust the temperatures of the motor 33 and the battery 20.

The motor side pipeline 30M and the battery side pipeline 20B are connected to a radiator 73, which is an external heat exchanger that exchanges heat between the first heat medium and the outside of the vehicle 10. As a result, the heat of the battery side pipeline 20B and the motor side pipeline 30M can be released to the outside of the vehicle 10, so that the motor 33 and the battery 20 are suppressed from being overheated. As a result, it becomes easy to maintain these motors 33 and the battery 20 at the motor appropriate temperature Tm and the battery appropriate temperature T2. Therefore, the motor 33 and the battery 20 can be operated efficiently.

The temperature control system S1 includes a control device 80 for controlling the heater 101 and the mix valve 500. The control device 80 compares the temperature of the first heat medium flowing through the battery 20 with the battery appropriate temperature T2 at which the battery 20 operates, and when the temperature of the first heat medium is lower than the battery appropriate temperature T2, the heater 101. And through the adjustment of the mix valve 500, the first heat medium heated by the heater 101 is sent to the battery side pipeline 20B.

As a result, the battery 20 can be brought closer to the battery appropriate temperature T2.

As a result of comparing the temperature of the first heat medium flowing through the battery 20 with the inefficiency temperature T1 which is set lower than the battery appropriate temperature T2 and the operating efficiency of the battery 20 is lowered, the control device 80 is the first heat medium. The temperature is higher than the inefficiency temperature T1, the temperature of the first heat medium flowing through the motor 33, the temperature of the oil that is the lubricant of the motor unit 30 provided with the motor 33, and the temperature of the motor unit provided with the motor 33. As a result of comparing with the motor proper temperature Tm having good operating efficiency of 30, when the temperature of the first heat medium is lower than the motor proper temperature Tm and the battery is being charged from an external power source, the heater 101 and the mix are used. Through the adjustment of the valve 500, the first heat medium heated by the heater 101 is sent to the motor side pipeline 30M.

Thereby, the temperature of the motor unit 30 provided with the motor 33 can be brought close to the motor appropriate temperature Tm.

The control device 80 compares the temperature of the first heat medium flowing through the battery 20 with the appropriate temperature of the battery in which the battery 20 operates, and when the temperature of the first heat medium is the same as or higher than the appropriate temperature of the battery T2, further. The temperature of the first heat medium flowing through the motor 33 is compared with the motor appropriate temperature Tm in which the operating efficiency of the motor unit 30 provided with the motor 33 is good, and as a result, the temperature of the first heat medium is the motor appropriate temperature Tm. If the temperature is lower than the above and the battery 20 is being charged from an external power source, the first heat medium heated by the heater 101 is sent to the motor side pipeline 30M through the adjustment of the heater 101 and the mix valve 500.

Thereby, while maintaining the battery 20 at the battery appropriate temperature T2, the temperature of the motor unit 30 provided with the motor 33 can be brought close to the motor appropriate temperature Tm.

The vehicle 10 includes a motor unit 30 and a temperature control system S1. The motor 33 and the battery 20 can be operated at an appropriate temperature with good operating efficiency.

<Second Embodiment>
Next, a second embodiment of the motor unit, the temperature control system, and the vehicle will be described. The main difference between the second embodiment and the first embodiment is that the mix valve is changed to a three-way switching valve, and the connection of the pipeline is changed due to the change. Therefore, in the second embodiment, the same components as those in the first embodiment are designated by the same reference numerals, and detailed description thereof will be omitted.

FIG. 4 is a schematic diagram of the temperature control system S2 provided in the vehicle.

As shown in FIG. 4, the vehicle 10 includes a motor unit 30 and a temperature control system S2. The temperature control system S2 includes a battery side pipe line 20B2, a motor side pipe line 30M, a fourth three-way switching valve 404 that adjusts the flow rate of the first heat medium flowing through the motor side pipe line 30M and the battery side pipe line 20B2, and a fourth three-way switching valve 404. To prepare for.

The heater 101 and the battery 20 are connected via the first pipe line 201, the first connection pipe 301, the 41st pipe line 241 and the fourth three-way switching valve 404, and the 42nd pipe line 242. The first pump 111 is provided in the 42nd pipeline 242. The 42nd pipeline 242 is provided with a first temperature detection point P1 for detecting the temperature of the first heat medium between the first pump 111 and the battery 20.

The battery 20 and the heater 101 are connected via the fifth pipe line 205, the third connection pipe 303, the sixth pipe line 206, the fourth connection pipe 304, and the seventh pipe line 207.

The first three-way switching valve 401 and the fourth three-way switching valve 404 are connected via the 43rd pipe line 243, the 41st connection pipe 341, and the 44th pipe line 244. A first heat exchanger 71 is provided in the 43rd pipeline 243. The 41st connection pipe 341 is connected to the 12th pipe line 212.

The fourth three-way switching valve 404 selectively switches between the high temperature first heat medium flowing from the 41st pipe line 241 and the low temperature first heat medium flowing from the 44th pipe line 244, and sends the heat medium to the 42nd pipe line 242. It is a switching valve. The fourth three-way switching valve 404 corresponds to the valve according to claim.

FIG. 5 is a flowchart showing a control flow of the control device 80. The control by the control device 80 will be described with reference to FIG. As with the description of the configuration, the same process as that of the first embodiment is given the same step number, and the description thereof is omitted.

As shown in FIG. 5, after executing the process of step S11, the control device 80 sets the battery 20 to the heater 101 when YES in step S12, that is, when the temperature at the first temperature detection point P1 is lower than the battery appropriate temperature T2. (Step S14). After that, the control device 80 returns the process.

When NO in step S12, that is, the temperature at the first temperature detection point P1 is the battery appropriate temperature T2, the control device 80 determines whether or not charging is being performed from an external power source and heating to the motor 33 is necessary. (Step S21).

YES in step S21, that is, when charging from an external power source and heating of the motor 33 is required, the control device 80 heats the motor 33 with the heater 101 (step S22). After that, the control device 80 returns the process.

If NO in step S22, that is, charging is being performed from an external power source and it is not determined that heating to the motor 33 is necessary, the control device 80 does not heat both the battery 20 and the motor 33 with the heater 101 (step S23). After that, the control device 80 returns the process.

Next, the effect of the second embodiment will be described.

The fourth three-way switching valve 404 selectively switches between the high-temperature first heat medium flowing through the high-temperature pipeline 200H and the low-temperature first heat medium flowing through the low-temperature pipeline 200L, and sends the battery 20.

Control in the control device 80 is easier than in the case of adopting a mix valve that adjusts the flow rate.

<Third Embodiment>
Next, a third embodiment of the motor unit, the temperature control system, and the vehicle will be described. The main difference between the third embodiment and the first embodiment is that a three-way switching valve is adopted in addition to the mix valve, and that the connection of the pipeline is changed due to the change. Therefore, in the third embodiment, the same components as those in the first embodiment are designated by the same reference numerals, and detailed description thereof will be omitted.

FIG. 6 is a schematic diagram of the temperature control system S3 provided in the vehicle.

As shown in FIG. 6, the vehicle 10 includes a motor unit 30 and a temperature control system S3. The temperature control system S3 is a mix valve 500 and a fifth three-way switch that adjusts the flow rate of the first heat medium flowing through the battery side pipe line 20B3, the motor side pipe line 30M, the motor side pipe line 30M, and the battery side pipe line 20B3. It comprises a valve 405 and.

Between the heater 101 and the battery 20, the first pipe line 201, the first connection pipe 301, the second pipe line 202, the mix valve 500, the 61st pipe line 261 and the fifth three-way switching valve 405, the 62nd pipe line 262. , 61st connection pipe 361, and 63rd pipe line 263. The space between the battery 20 and the heater 101 is the same as in the first embodiment.

The fifth three-way switching valve 405 and the 61st connecting pipe 361 are connected via the 64th pipe 264, the 62nd connecting pipe 362, and the 65th pipe 265 separately from the 62nd pipe 262. .. The 64th pipeline 264 is provided with a first heat exchanger 71. The 62nd connection pipe 362 is connected to the 12th pipe line 212.

The mix valve 500 is a valve that adjusts the mixing ratio of the high temperature first heat medium flowing from the second line 202 and the low temperature first heat medium flowing from the ninth line 209 and sends the mixture valve to the 61st line 261. be.

The fifth three-way switching valve 405 is a switching valve that selectively switches and sends the first heat medium whose temperature is adjusted by the mix valve 500 flowing from the 61st pipe line 261 to the 62nd line line 262 and the 64th line line 264. Is. The fifth three-way switching valve 405 corresponds to the valve according to claim. The first heat medium flowing through the 62nd line 262 is sent to the battery 20, and the first heat medium flowing through the 64th line 264 is sent to the battery 20 via the first heat exchanger 71.

When raising the temperature of the motor 33 and the battery 20, the control flow in the control device 80 is such that the fifth three-way switching valve 405 is maintained in a state where the first heat medium flows from the 61st pipe 261 to the 62nd pipe 262. , Since it is the same as the control flow of the first embodiment, it is omitted.

Next, the effect of the third embodiment will be described.

The fifth three-way switching valve 405 can switch between a state in which the first heat medium flowing from the 61st pipe line 261 flows through the 62nd pipe line 262 and a state in which the first heat medium flows through the 64th pipe line 264. Then, when the temperature of the battery 20 is raised, the control device 80 maintains the fifth three-way switching valve 405 in a state in which the first heat medium flows from the 61st pipe line 261 to the 62nd pipe line 262. As a result, since the first heat medium does not pass through the first heat exchanger 71 as in the first embodiment, the pressure loss generated when the first heat medium passes through the first heat exchanger does not occur. Therefore, the amount of electric power required to operate the pump 110 is reduced, and the electric power of the battery 20 can be used efficiently.

Next, a modified example of each of the above embodiments will be described.

The mix valve and the three-way switching valve are provided on the battery line side, but may be provided on the motor line side.

The control device may be provided in the motor unit as well as the inverter and the power supply device.

The application destination of the motor unit and the temperature control system is not limited to electric vehicles, but may be vehicles such as hybrid vehicles that travel by driving a motor.

In the above embodiment, the temperature detection point provided in the pipeline may be provided in a state of being integrated with the battery, the inverter, or the motor. That is, it suffices if the temperature of the first heat medium flowing into the battery, the inverter, or the motor can be detected.

In the above embodiment, the arrangement of the pump, the switching valve, the temperature sensor, and the valve is an example, and is not limited to the configuration of the above embodiment. For example, the second pump 112 may be provided in the 16th pipeline 216.

The above embodiments and modifications may be combined with each other within a technically consistent range.

The content of this disclosure includes the following independent invention content based on the flowchart shown in FIG.

A battery, a heater, a motor, a first heat medium, a motor side conduit for heat exchange between the motor, and a battery for heat exchange between the first heat medium heated by the heater and the battery. A control method for a temperature control system including a side conduit and a control device for controlling a heater, wherein the temperature of the first heat medium flowing through the battery is compared with the appropriate temperature of the battery in which the battery operates. When the temperature of the first heat medium is lower than the proper temperature of the battery, there is a step of operating a heater to heat the motor.

In addition, the process of confirming whether the battery is being charged, the temperature of the first heat medium flowing through the motor, the temperature of the oil that is the lubricant of the motor unit provided with the motor, and the motor with good operating efficiency of the motor unit. When the process of comparing the proper temperature and the battery is being charged and the temperature of the first heat medium flowing through the motor or the temperature of the oil is lower than the proper temperature of the motor, the heater is operated to heat the motor. It has a process.

Further, a process of comparing the temperature of the first heat medium flowing through the battery with an inefficient temperature at which the operating efficiency of the battery is set lower than the appropriate temperature of the battery and the operating efficiency of the battery is lowered, and the battery is being charged. Compare the temperature of the first heat medium flowing through the motor or the temperature of the oil that is the lubricant of the motor unit in which the motor is provided with the temperature of the oil that is the lubricant of the motor unit and the appropriate temperature of the motor that has good operating efficiency of the motor unit. The temperature of the first heat medium flowing through the battery is lower than the inefficiency temperature, the battery is being charged, and the temperature of the first heat medium flowing through the motor or the temperature of the oil is higher than the proper temperature of the motor. If it is also low, it has a step of operating a heater to heat the motor.

The content of this disclosure can solve the problem that when the outside air temperature is low and the battery is in a state lower than the appropriate temperature, the charging capacity of the battery becomes low and the cruising range of the vehicle decreases. According to the contents of the present disclosure, while charging the battery, the heater can be operated by using the electric power obtained from the external power source to heat the battery through the pipe line through which the first heat medium flows. That is, the pipeline through which the first heat medium flows can be heated without damaging the electric power of the battery, and the battery can be set to an appropriate temperature, so that it is possible to suppress a decrease in the cruising range of the vehicle. .. It was

The contents of the present disclosure are suitable, but not limited to, for example, at an outside air temperature of −20 ° C. to 10 ° C.

Claims (14)

The motor that drives the vehicle and
A motor side pipeline in which a first heat medium heated by a heater flows and heat is exchanged between the first heat medium and the motor is provided.
The motor side pipeline is connected to a battery side pipeline that exchanges heat between the first heat medium and the battery of the vehicle.
The flow rate of the first heat medium flowing through the motor side pipeline and the battery side pipeline is adjusted by a valve and a pump.
The first heat medium is a motor unit that flows through the air-conditioning side pipeline of the air-conditioning device of the vehicle and exchanges heat with a second heat medium different from the first heat medium. The motor side pipe and the battery side pipe include a high temperature pipe through which the first heat medium supplied from the heater flows and a low temperature pipe through which the first heat medium passed through the motor and the battery flows. Have,
The motor unit according to claim 1, wherein the valve adjusts the flow rate of the first heat medium flowing from the low temperature pipe to the high temperature pipe. The valve is a mix valve that mixes the high-temperature first heat medium flowing through the high-temperature pipeline and the low-temperature first heat medium flowing through the low-temperature pipeline and sends them to at least one of the motor and the battery. The motor unit according to claim 2, including the motor unit. The valve selectively switches between the high-temperature first heat medium flowing through the high-temperature pipe and the low-temperature first heat medium flowing through the low-temperature pipe, and sends the valve to at least one of the motor and the battery. The motor unit according to claim 2 or 3, which includes a valve. The invention according to any one of claims 1 to 4, wherein the motor side pipeline and the battery side pipeline are connected to a radiator that exchanges heat between the first heat medium and the outside of the vehicle. Motor unit. The motor that drives the vehicle and
A heater that heats the first heat medium and
A battery-side pipeline through which the first heat medium heated by the heater flows and heat is exchanged between the first heat medium and the battery of the vehicle.
It is provided with a motor side pipeline for heat exchange between the first heat medium and the battery, and a valve and a pump for adjusting the flow rate of the first heat medium flowing through the battery side pipeline.
A temperature control system in which the first heat medium flows through the air-conditioning side pipeline of the air-conditioning device of the vehicle and exchanges heat with a second heat medium different from the first heat medium. A control device for controlling the heater and the valve is provided.
The control device compares the temperature of the first heat medium flowing through the battery with the appropriate temperature of the battery in which the battery operates, and when the temperature of the first heat medium is lower than the appropriate temperature of the battery, the control device said. The temperature control system according to claim 6, wherein the first heat medium heated by the heater is sent to the battery side pipeline through adjustment of the heater and the valve. The control device compares the temperature of the first heat medium flowing through the battery with the inefficiency temperature set lower than the proper temperature of the battery and lowering the operating efficiency of the battery. As a result, the first heat. The temperature of the medium is the same as or higher than the inefficiency temperature, and the temperature of the first heat medium flowing through the motor or the temperature of the oil which is the lubricant of the motor unit in which the motor is provided and the motor are provided. As a result of comparing the temperature of the first heat medium or the temperature of the oil with the appropriate temperature of the motor, which has good operating efficiency of the motor unit, the temperature of the first heat medium or the temperature of the oil is lower than the appropriate temperature of the motor, and the battery is being charged from an external power source. The temperature control system according to claim 7, wherein the first heat medium heated by the heater is sent to the motor side pipeline through adjustment of the heater and the valve. The control device compares the temperature of the first heat medium flowing through the battery with the appropriate temperature of the battery in which the battery operates, and the temperature of the first heat medium is the same as or higher than the appropriate temperature of the battery. , The temperature of the first heat medium flowing through the motor or the temperature of the oil which is the lubricant of the motor unit provided with the motor is compared with the appropriate temperature of the motor where the operating efficiency of the motor unit provided with the motor is good. As a result, when the temperature of the first heat medium or the temperature of the oil is lower than the proper temperature of the motor and the battery is being charged, it is heated by the heater through the adjustment of the heater and the valve. The temperature control system according to claim 7, wherein the first heat medium is sent to the motor side pipeline. Further equipped with a power conversion circuit,
The power conversion circuit has an AC-DC conversion circuit that converts an alternating current supplied from an external power source into a direct current and supplies the battery, and a direct current supplied from the battery is converted into a direct current having a different voltage. The temperature control system according to any one of claims 6 to 9, further comprising a DC-DC conversion circuit supplied to a control device. Heat between the battery, the heater, the motor, the first heat medium, the motor side pipeline that exchanges heat between the motor, and the first heat medium and the battery heated by the heater. It is a control method of a temperature control system including a battery side pipeline for replacement and a control device for controlling the heater.
A step of comparing the temperature of the first heat medium flowing through the battery with the proper temperature of the battery in which the battery operates.
It is characterized by having a step of operating the heater to heat the motor when the temperature of the first heat medium is lower than the appropriate temperature of the battery. The process of checking whether the battery is charging and
A step of comparing the temperature of the first heat medium flowing through the motor or the temperature of oil which is a lubricant of the motor unit provided with the motor with the appropriate temperature of the motor having good operating efficiency of the motor unit.
When the battery is being charged and the temperature of the first heat medium flowing through the motor or the temperature of the oil is lower than the proper temperature of the motor, the step of operating the heater to heat the motor. 11. The control method for a temperature control system according to claim 11. A step of comparing the temperature of the first heat medium flowing through the battery with an inefficient temperature at which the operating efficiency of the battery is set lower than the appropriate temperature of the battery and the operating efficiency of the battery is lowered.
The process of checking whether the battery is charging and
A step of comparing the temperature of the first heat medium flowing through the motor or the temperature of oil which is a lubricant of the motor unit provided with the motor with the appropriate temperature of the motor having good operating efficiency of the motor unit.
The temperature of the first heat medium flowing through the battery is lower than the inefficiency temperature, the battery is being charged, and the temperature of the first heat medium flowing through the motor or the temperature of the oil is the temperature of the oil. The control method for a temperature control system according to claim 11, further comprising a step of operating the heater to heat the motor when the temperature is lower than the appropriate temperature of the motor. The motor unit according to any one of claims 1 to 5, the temperature control system according to any one of claims 6 to 10, and any one of claims 11 to 13. A vehicle equipped with at least one of the control methods of the temperature control system.

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