Thermal management system and hybrid vehicle

Abstract

The utility model discloses a thermal management system and a hybrid vehicle, the thermal management system includes: a battery loop including a battery direct-cooling and direct-heating plate and a first heat exchanger, the battery direct-cooling and direct-heating plate is arranged at one side of a battery and is used for heat exchange with the battery, and the first heat exchanger is used for heat exchange with the battery; the battery direct-cooling and direct-heating plate is communicated with the refrigerant side of the first heat exchanger in series; the engine cooling loop comprises a second heat exchanger, and a cooling medium in the engine cooling loop is used for cooling the engine; and the ventilation adjusting assembly communicates with the air side of the first heat exchanger and the air side of the second heat exchanger, and the ventilation adjusting assembly selectively communicates the first heat exchanger with the second heat exchanger so as to achieve heat interaction between the engine cooling loop and the battery loop. Engine waste heat generated when the engine works is transmitted to the battery loop through the ventilation adjusting assembly, so that the battery is heated, the heating rate is increased, and the heat exchange efficiency is high.

Description

Technical Field

[0001] The utility model relates to the technical field of vehicle thermal management, and particularly relates to a thermal management system and a hybrid vehicle. Background Art

[0002] In the related art, for a hybrid vehicle, when cooling the engine, since the engine temperature is relatively high, the heat in the coolant can be recovered to heat the battery pack, but the heating rate is slow. Or when the engine is not working, the battery pack is heated by relying on a heater, resulting in high energy consumption and affecting the battery endurance. Content of the Utility Model

[0003] The utility model aims to at least solve one of the technical problems existing in the prior art. For this purpose, the utility model provides a thermal management system, which can utilize the waste heat of the engine to heat the battery, improve the heating rate, and has high heat exchange efficiency.

[0004] The utility model further provides a hybrid vehicle.

[0005] The thermal management system according to the first aspect embodiment of the utility model includes: a battery circuit, including a battery direct cooling and heating plate and a first heat exchanger. The battery direct cooling and heating plate is arranged on one side of the battery and is used for heat exchange with the battery, and the battery direct cooling and heating plate is connected in series with the refrigerant side of the first heat exchanger; an engine cooling circuit, including a second heat exchanger, and the cooling medium inside is used for cooling the engine; a ventilation adjustment assembly, which is respectively connected to the air side of the first heat exchanger and the air side of the second heat exchanger, and the ventilation adjustment assembly selectively connects the first heat exchanger and the second heat exchanger to realize the heat interaction between the engine cooling circuit and the battery circuit.

[0006] For the thermal management system according to the embodiment of the utility model, the waste heat of the engine generated when the engine works is transferred to the battery circuit through the ventilation adjustment assembly, so as to heat the battery, improve the heating rate, and has high heat exchange efficiency.

[0007] According to some embodiments of the utility model, the ventilation adjustment assembly includes: a first pipeline and a first control valve. The first pipeline is connected between the air side outlet of the first heat exchanger and the air side inlet of the second heat exchanger, and the first control valve is arranged on the first pipeline.

[0008] According to some embodiments of the utility model, the ventilation adjustment assembly further includes: a PTC heater, which is arranged on the first pipeline and the outlet of the PTC heater is connected to the inlet of the air side of the first heat exchanger.

[0009] According to some embodiments of the present utility model, the ventilation adjustment assembly further includes: a second pipeline, a heat accumulator, and a second control valve. One end of the second pipeline is connected to the air side outlet of the first heat exchanger, and the other end is connected to one side of the inlet of the PTC heater. The heat accumulator is arranged on the second pipeline, and the second control valve is arranged on the second pipeline and on the inlet side of the heat accumulator.

[0010] According to some embodiments of the present utility model, it further includes: a controller configured to selectively conduct the second pipeline according to whether the heat accumulator is in a heat storage state.

[0011] According to some embodiments of the present utility model, it further includes: a first temperature sensor arranged at the inlet of the air side of the first heat exchanger for monitoring the first air temperature at the inlet of the air side of the first heat exchanger; a second temperature sensor arranged at the outlet of the heat accumulator for monitoring the second air temperature at the outlet of the heat accumulator; a controller, the controller is respectively connected to the first temperature sensor and the second temperature sensor, and the controller is configured to control the opening and closing of the PTC heater according to whether the received first air temperature and / or the second air temperature is higher than a first temperature threshold set at the inlet of the air side of the first heat exchanger.

[0012] According to some embodiments of the present utility model, the ventilation adjustment assembly further includes: a first fan, one end of the first fan is used to introduce outside fresh air, and the other end is connected to the inlet of the air side of the first heat exchanger through a third control valve; a second fan, one end of the second fan is used to introduce outside fresh air, and the other end is connected to the inlet of the air side of the second heat exchanger through a fourth control valve.

[0013] According to some embodiments of the present utility model, it further includes: a third temperature sensor arranged at the outlet of the air side of the second heat exchanger for monitoring the third air temperature at the outlet of the air side of the second heat exchanger; a controller, the controller is connected to the third temperature sensor, and the controller is configured to control the rotation speed of the second fan according to whether the received third air temperature is higher than a second temperature threshold when the phase change material in the heat accumulator undergoes a phase change.

[0014] According to some embodiments of the present utility model, the ventilation adjustment assembly further includes: a third pipeline, one end of the third pipeline is connected to the air side outlet of the first heat exchanger, and the other end is connected to the outside air; a fourth pipeline, one end of the fourth pipeline is connected to the air side outlet of the second heat exchanger through a fifth control valve, and the other end is connected to the outside air.

[0015] According to some embodiments of the present utility model, the battery circuit includes: a compressor connected between the first end of the first heat exchanger and the first end of the battery direct cooling and heating plate; a four-way valve, the first valve port of the four-way valve is connected to the first end of the battery direct cooling and heating plate, the second valve port of the four-way valve is connected to the outlet of the compressor, the third valve port of the four-way valve is connected to the inlet of the compressor, and the fourth valve port of the four-way valve is connected to the first end of the refrigerant side of the first heat exchanger; wherein, in the heating mode, the first valve port and the second valve port are communicated, and the third valve port and the fourth valve port are communicated, and in the cooling mode, the first valve port and the third valve port are communicated, and the second valve port and the fourth valve port are communicated.

[0016] According to some embodiments of the present utility model, a first branch and a second branch are arranged in parallel between the second end of the first heat exchanger and the second end of the battery direct cooling and heating plate. A first throttling member and a subcooling heat exchanger are arranged on the first branch, and a second throttling member is arranged on the second branch; wherein, in the heating mode, the first throttling member is opened and the second throttling member is closed, and in the cooling mode, the first throttling member is closed and the second throttling member is opened.

[0017] According to some embodiments of the present utility model, the battery circuit further includes: a sensor assembly arranged at the outlet of the subcooling heat exchanger for monitoring the pressure and temperature at the outlet of the subcooling heat exchanger; a controller, the controller obtains the subcooling degree of the subcooling heat exchanger according to the detection values received by the sensor assembly and judges whether the subcooling degree is equal to the set value of the subcooling degree, so as to adjust the compressor and the first throttling member.

[0018] According to some embodiments of the present utility model, the battery circuit further includes: a sixth control valve arranged on the first branch, one end of the sixth control valve is connected to the inlet of the subcooling heat exchanger and the other end is connected to the second end of the battery direct cooling and heating plate; a seventh control valve, one end of the seventh control valve is respectively connected to the first throttling member and the second throttling member and the other end is connected to the second end of the refrigerant side of the first heat exchanger.

[0019] The hybrid vehicle according to the second aspect embodiment of the present utility model includes the above-mentioned thermal management system.

[0020] The additional aspects and advantages of the present utility model will be partly given in the following description, partly will become obvious from the following description, or will be understood through the practice of the present utility model. Description of the Drawings

[0021] The above and / or additional aspects and advantages of the present utility model will become obvious and easy to understand from the description of the embodiments in conjunction with the following drawings, wherein:

[0022] Figure 1 It is a schematic structural diagram of direct heating cycle according to the battery circuit of the embodiment of the present invention;

[0023] Figure 2 It is a schematic structural diagram of direct cooling cycle according to the battery circuit of the embodiment of the present invention;

[0024] Figure 3 It is a flowchart for judging the working mode in the direct heating cycle state according to the embodiment of the present invention;

[0025] Figure 4 It is a flowchart for judging the working mode in the direct cooling cycle state according to the embodiment of the present invention.

[0026] Reference signs:

[0027] 1. Battery circuit; 101. Battery direct cooling and heating plate; 102. First heat exchanger; 103. Compressor; 104. Four-way valve; a. First valve port; b. Second valve port; c. Third valve port; d. Fourth valve port; 105. First branch; 106. First throttling element; 107. Subcooling heat exchanger; 108. Second branch; 109. Second throttling element; 111. Fourth temperature sensor; 112. Pressure sensor; 113. Sixth control valve; 114. Seventh control valve; 115. Accumulator; 116. Filter; 117. Check valve; 118. Gas-liquid separator; 119. Oil separator; 120. Battery; 2. Engine cooling circuit; 201. Second heat exchanger; 202. Circulating water pump; 203. Cooling water jacket; 204. Thermostat; 3. Ventilation adjustment assembly; 301. First pipeline; 302. First control valve; 303. PTC heater; 304. Second pipeline; 305. Heat accumulator; 306. Second control valve; 307. First temperature sensor; 308. Second temperature sensor; 309. First fan; 310. Third control valve; 311. Second fan; 312. Fourth control valve; 313. Third temperature sensor; 314. Third pipeline; 315. Fourth pipeline; 316. Fifth control valve; 317. Fifth temperature sensor. Detailed implementation manners

[0028] The embodiments of the present invention will be described in detail below. The embodiments described with reference to the drawings are exemplary. The embodiments of the present invention will be described in detail below.

[0029] Reference will be made below to Figures 1 - 4 Describe the thermal management system according to the embodiment of the present invention.

[0030] As Figures 1 - 4 shown, the thermal management system includes: a battery circuit 1, an engine cooling circuit 2, and a ventilation adjustment assembly 3.

[0031] The battery circuit 1 includes a battery direct cooling and heating plate 101 and a first heat exchanger 102. The battery direct cooling and heating plate 101 is arranged on one side of the battery 120 and is used for heat exchange with the battery 120. The refrigerant side of the battery direct cooling and heating plate 101 is connected in series with the refrigerant side of the first heat exchanger 102. With such a setting, by adopting the battery 120 direct cooling and heating technology, when the temperature of the battery 120 is too high, heat can be quickly conducted from the surface of the battery 120 to the cooling medium through direct cooling, thereby reducing the temperature of the battery 120. When the temperature of the battery 120 is too low, heat can be quickly conducted to the surface of the battery 120 through direct heating, thereby increasing the temperature of the battery 120. The battery 120 direct cooling and heating technology greatly improves the heat conduction efficiency, makes the temperature control more accurate and efficient, enables more uniform heat transfer, avoids the problem of excessive or too low local temperature, and reduces energy loss and power consumption at the same time.

[0032] The engine cooling circuit 2 includes a second heat exchanger 201, and the cooling medium inside the second heat exchanger 201 is used to cool down the engine. With such a setting, by circulating the cooling medium in the engine cooling circuit 2, the heat generated by the engine can be taken away, and the heat carried by the cooling medium can be released to the outside through the second heat exchanger 201, thereby cooling down the engine. In addition, the engine cooling circuit 2 further includes: a circulating water pump 202, a cooling water jacket 203, and a thermostat 204 connected in sequence. The inlet of the second heat exchanger 201 is connected to the thermostat 204, and the outlet of the second heat exchanger 201 is connected to the circulating water pump 202.

[0033] The ventilation adjustment assembly 3 is respectively connected to the air side of the first heat exchanger 102 and the air side of the second heat exchanger 201. The ventilation adjustment assembly 3 selectively connects the first heat exchanger 102 and the second heat exchanger 201 to achieve heat interaction between the engine cooling circuit 2 and the battery circuit 1.

[0034] With such a setting, the ventilation adjustment assembly 3 can achieve energy transfer between the air side of the first heat exchanger 102 in the battery circuit 1 and the air side of the second heat exchanger 201 in the engine cooling circuit 2. Specifically, taking the engine cooling circuit 2 as an example, when the cooling medium carrying the heat generated by the engine passes through the second heat exchanger 201, the ventilation adjustment assembly 3 can exchange heat between the cooling medium and the air, thereby cooling down the cooling medium. Similarly, for the battery circuit 1, the ventilation adjustment assembly 3 can exchange heat between the refrigerant and the air, so that the refrigerant evaporates and absorbs heat or condenses and releases heat in the first heat exchanger 102.

[0035] Moreover, the ventilation adjustment assembly 3 can also achieve heat interaction between the engine cooling circuit 2 and the battery circuit 1. With such an arrangement, when the temperature of the battery 120 is too low, while adopting the direct cooling and direct heating technology of the battery 120, the waste heat of the engine can also be transferred to the battery circuit 1 through the ventilation adjustment assembly 3 when the engine is operating, thereby increasing the heating rate and having a relatively high heat exchange efficiency.

[0036] In some embodiments, see Figure 3 , when the lowest temperature of the battery 120 is lower than the third temperature threshold, the battery circuit 1 performs a direct heating cycle. At the same time, the ventilation adjustment assembly 3 connects the first heat exchanger 102 and the second heat exchanger 201 to achieve heat interaction between the engine cooling circuit 2 and the battery circuit 1. See Figure 4 , when the highest temperature of the battery 120 is higher than the fourth temperature threshold, the battery circuit 1 performs a direct cooling cycle. At this time, the ventilation adjustment assembly 3 disconnects the connection between the first heat exchanger 102 and the second heat exchanger 20, so that the engine cooling circuit 2 and the battery circuit 1 circulate independently without interference. Among them, the third temperature threshold is the lower limit value of the operating temperature of the battery 120, and the fourth temperature threshold is the upper limit value of the operating temperature of the battery 120.

[0037] Thus, according to the thermal management system of the embodiment of the present invention, when the temperature of the battery 120 is too low, while directly heating the battery 120 by adopting the direct cooling and direct heating technology of the battery 120, the waste heat of the engine can also be transferred to the battery circuit 1 through the ventilation adjustment assembly 3 when the engine is operating, thereby increasing the heating rate and having a relatively high heat exchange efficiency.

[0038] According to some specific embodiments of the present invention, see Figure 1 , the ventilation adjustment assembly 3 includes: a first pipeline 301 and a first control valve 302. The first pipeline 301 is connected between the air side outlet of the first heat exchanger 102 and the air side inlet of the second heat exchanger 201, and the first control valve 302 is arranged on the first pipeline 301.

[0039] With such an arrangement, when the battery circuit 1 performs a direct heating cycle and the engine is operating, the first control valve 302 is opened to connect the first heat exchanger 102 and the second heat exchanger 201, so that the waste heat of the engine can be transferred into the battery circuit 1.

[0040] According to some embodiments of the present invention, see Figure 1 , the ventilation adjustment assembly 3 further includes: a PTC heater 303. The PTC heater 303 is arranged on the first pipeline 301 and the outlet of the PTC heater 303 is connected to the inlet of the air side of the first heat exchanger 102.

[0041] With such a setting, when the battery loop 1 undergoes a direct heating cycle and the waste heat generated by the engine operation is insufficient, the PTC heater 303 is used to assist in heating the air in the first pipeline 301 to ensure that sufficient heat is transferred to the battery loop 1.

[0042] According to some embodiments of the present invention, see Figure 1 , the ventilation adjustment assembly 3 further includes: a second pipeline 304, a heat accumulator 305, and a second control valve 306. One end of the second pipeline 304 is connected to the air side outlet of the first heat exchanger 102, and the other end is connected to one side of the inlet of the PTC heater 303. The heat accumulator 305 is arranged on the second pipeline 304, and the second control valve 306 is arranged on the second pipeline 304 and on the inlet side of the heat accumulator 305.

[0043] With such a setting, the air is divided into two paths from the air side outlet of the second heat exchanger 201. One path is connected to the first control valve 302 on the first pipeline 301; the other path is connected to the second control valve 306 and the heat accumulator 305 on the second pipeline 304. The outlets of the first control valve 302 and the heat accumulator 305 are both connected to the inlet of the PTC heater 303, and the outlet of the PTC heater 303 is connected to the air side inlet of the first heat exchanger 102.

[0044] Considering that the heat accumulator 305 can store excess heat and release the heat when needed, the heat accumulator 305 is arranged on the second pipeline 304. When the engine temperature is high but the battery 120 has no heating requirement, the heat accumulator 305 can store the heat and release the heat when the battery 120 has a heating requirement, playing an energy-saving role.

[0045] According to some specific embodiments of the present invention, the thermal management system further includes: a controller configured to selectively conduct the second pipeline 304 according to whether the heat accumulator 305 is in a heat storage state.

[0046] See Figure 3 , when the heat accumulator 305 is in a heat storage state, that is, the heat accumulator 305 has heat to release to raise the temperature of the air, the second pipeline 304 is conducted, and the air is heated by absorbing the waste heat of the engine, the heat of the heat accumulator 305, and the PTC heater 303; conversely, when the heat accumulator 305 has no heat to release, the second pipeline 304 is closed, and the air is heated by absorbing the waste heat of the engine and the PTC heater 303.

[0047] Under the direct heating cycle of the battery 120, according to whether the engine is in a working state and whether the heat accumulator 305 is in a heat storage state, see Figure 1 And Figure 3 , the thermal management system has four working modes:

[0048] The first case is when the engine is operating and the heat accumulator 305 is in the heat storage state. When the waste heat provided by the engine is sufficient, causing the outlet temperature of the air side of the second heat exchanger 201 to be very high, at this time, the PTC heater 303 does not need to be turned on, and the battery 120 can be heated solely by the engine waste heat; when the waste heat provided by the engine is insufficient, the heating power of the PTC heater 303 is adjusted to increase the inlet temperature of the air side of the first heat exchanger 102. Among them, when the outlet temperature of the air side of the second heat exchanger 201 is higher than the phase change temperature point of the phase change material inside the heat accumulator 305, that is, the second temperature threshold, the phase change material in the heat accumulator 305 stores the excess air heat through phase change in the heat accumulator 305 until it is saturated; when the outlet temperature is lower than the second temperature threshold, the heat accumulator 305 releases heat to raise the temperature of the air.

[0049] The second case is when the engine is operating and the heat accumulator 305 is not in the heat storage state. Then, the heat accumulator 305 has no heat to release to raise the temperature of the air, and the air in the ventilation adjustment assembly 3 is heated by absorbing the waste heat of the engine and the heating effect of the PTC heater 303.

[0050] The third case is when the engine is not operating and the heat accumulator 305 is in the heat storage state. The air in the ventilation adjustment assembly 3 does not exchange heat in the second heat exchanger 201. The air absorbs heat in the heat accumulator 305, and by adjusting the heating power of the PTC heater 303, the inlet temperature of the air side of the first heat exchanger 102 is increased.

[0051] The fourth case is when the engine is not operating and the heat accumulator 305 is not in the heat storage state. At this time, the PTC heater 303 is the only heat source, and the heating power of the PTC heater 303 is adjusted to increase the inlet temperature of the air side of the first heat exchanger 102.

[0052] In the direct cooling cycle of the battery 120, regardless of whether the engine is operating and whether the heat accumulator 305 is in the heat storage state, see Figure 2 and Figure 4 , the engine cooling circuit 2 and the battery circuit 1 circulate independently and do not exchange heat.

[0053] In addition, when the engine is operating and the battery 120 has no cooling and heating requirements, the second pipeline 304 is conducted, the PTC heater 303 is turned off, and the phase change material absorbs heat from the air in the heat accumulator 305 to undergo phase change heat storage until the heat storage amount in the heat accumulator 305 is saturated. Then the air flows through the PTC heater 303 and the first heat exchanger 102 and is discharged to the outside. At this time, the working mode of the thermal management system is the pure heat storage mode, which can improve the energy utilization efficiency of the thermal management system.

[0054] According to some embodiments of the present utility model, the thermal management system further includes: a first temperature sensor 307, a second temperature sensor 308, and a controller, and the controller is respectively connected to the first temperature sensor 307 and the second temperature sensor 308. The first temperature sensor 307 is disposed at the inlet of the air side of the first heat exchanger 102 for monitoring the first air temperature at the inlet of the air side of the first heat exchanger 102. The second temperature sensor 308 is disposed at the outlet of the heat accumulator 305 for monitoring the second air temperature at the outlet of the heat accumulator 305. The controller is configured to control the turning on and off of the PTC heater 303 according to whether the received first air temperature and / or the second air temperature is higher than a first temperature threshold set at the inlet of the air side of the first heat exchanger 102.

[0055] Specifically, in the direct heat circulation of the battery 120, when the heat accumulator 305 is not in the heat storage state, the second pipeline 304 is closed. When the first air temperature is lower than the first temperature threshold set at the inlet of the air side of the first heat exchanger 102, it indicates that the waste heat provided by the engine is insufficient, and the PTC heater 303 is controlled to turn on to increase the inlet temperature of the air side of the first heat exchanger 102, so that the inlet temperature of the refrigerant side of the first heat exchanger 102 reaches an ideal state value. When the first air temperature is higher than the first temperature threshold set at the inlet of the air side of the first heat exchanger 102, it indicates that the waste heat of the engine is relatively sufficient, and the PTC heater 303 is controlled to turn off. At this time, the power of the circulation water pump 202 can be adjusted, and the ventilation adjustment assembly 3 adjusts the air to perform heat exchange with the cooling medium of the second heat exchanger 201 to cool down the engine and ensure that the engine temperature is stably within the appropriate working temperature range.

[0056] When the heat accumulator 305 is in the heat storage state, the second pipeline 304 is conducted. When the second air temperature is lower than the first temperature threshold set at the inlet of the air side of the first heat exchanger 102, it indicates that the waste heat of the engine and the heat released by the heat accumulator 305 are insufficient, and the PTC heater 303 is controlled to turn on to increase the inlet temperature of the air side of the first heat exchanger 102. When the first air temperature or the second air temperature is higher than the first temperature threshold set at the inlet of the air side of the first heat exchanger 102, at this time, the power of the circulation water pump 202 can be adjusted, and the ventilation adjustment assembly 3 adjusts the air to perform heat exchange with the cooling medium of the second heat exchanger 201 to cool down the engine. After the engine temperature is stably within the appropriate working temperature range, the ventilation adjustment assembly 3 adjusts the air so that the outlet temperature of the air side of the second heat exchanger 201 is lower than the phase change temperature point of the phase change material inside the heat accumulator 305, so that the air further absorbs heat in the heat accumulator 305.

[0057] According to some embodiments of the present utility model, the ventilation adjustment assembly 3 further includes: a first fan 309 and a second fan 311. One end of the first fan 309 is used to introduce fresh outside air, and the other end is connected to the inlet of the air side of the first heat exchanger 102 through a third control valve 310. One end of the second fan 311 is used to introduce fresh outside air, and the other end is connected to the inlet of the air side of the second heat exchanger 201 through a fourth control valve 312.

[0058] With such a setting, the inlet temperature of the air side of the first heat exchanger 102 can be adjusted by adjusting the rotation speed of the first fan 309, and the inlet temperature of the air side of the second heat exchanger 201 can be adjusted by adjusting the rotation speed of the second fan 311.

[0059] Specifically, when the battery circuit 1 performs a direct heat cycle, the third control valve 310 is closed and the fourth control valve 312 is opened, so that the second fan 311 operates and the first fan 309 stops rotating. The inlet temperature of the air side of the second heat exchanger 201 is adjusted by the second air speed, and the inlet temperature of the air side of the first heat exchanger 102 is adjusted by the PTC heater 303 and / or the heat accumulator 305.

[0060] When the battery circuit 1 performs a direct cooling cycle, both the third control valve 310 and the fourth control valve 312 are opened, and the first fan 309 and the second fan 311 operate to respectively adjust the inlet temperatures of the air sides of the first heat exchanger 102 and the second heat exchanger 201.

[0061] According to some embodiments of the present utility model, the thermal management system further includes: a third temperature sensor 313 and a controller, and the controller is connected to the third temperature sensor 313. The third temperature sensor 313 is disposed at the outlet of the air side of the second heat exchanger 201 for monitoring the third air temperature at the outlet of the air side of the second heat exchanger 201.

[0062] The controller is configured to control the rotation speed of the second fan 311 according to whether the received third air temperature is higher than the second temperature threshold when the phase change material in the heat accumulator 305 undergoes a phase change.

[0063] With such a setting, during the direct heat cycle of the battery 120, when the engine is working and the heat accumulator 305 is in a heat storage state, when the temperature at the inlet of the air side of the first heat exchanger 102 is higher than the first temperature threshold, the PTC heater 303 is turned off. Adjust the rotation speed of the second fan 311 and adjust the power of the circulation water pump 202 to cool down the engine. After the engine temperature stabilizes at an appropriate working temperature.

[0064] At this time, when the third air temperature at the air side outlet of the second heat exchanger 201 is higher than the fourth temperature threshold, the rotation speed of the second fan 311 is adjusted to increase the wind speed, so that the third air temperature is lower than the second temperature threshold, thereby enabling the air to further absorb heat in the regenerator 305.

[0065] After the lowest temperature of the battery 120 can be stabilized within the range between the third temperature threshold and the fourth temperature threshold, the rotation speed of the second fan 311 is adjusted to reduce the wind speed, and the third air temperature at the outlet of the second heat exchanger 201 is increased to make the third air temperature higher than the second temperature threshold. The air heats the phase change material in the regenerator 305 to cause phase change heat storage, and the heating power of the PTC heater 303 is adjusted accordingly to keep the first air temperature at the air inlet of the first heat exchanger 102 always stable at the first temperature threshold until the heat storage amount of the regenerator 305 is saturated. Then, the second wind speed frequency and the heating power of the PTC heater 303 are adjusted to maintain the stable operation of the direct heating cycle.

[0066] According to some embodiments of the present invention, the ventilation adjustment assembly 3 further includes: a third pipeline 314 and a fourth pipeline 315. One end of the third pipeline 314 is connected to the air side outlet of the first heat exchanger 102, and the other end is connected to the outside air. One end of the fourth pipeline 315 is connected to the air side outlet of the second heat exchanger 201, and the other end is connected to the outside air through a fifth control valve 316.

[0067] With such a setting, when the battery circuit 1 performs a direct cooling cycle, the third control valve 310, the fourth control valve 312, and the fifth control valve 316 are all opened, and the first fan 309 and the second fan 311 operate, so that the outside fresh air exchanges heat in the first heat exchanger 102 and is released to the outside through the third pipeline 314, and the outside fresh air exchanges heat in the second heat exchanger 201 and is released to the outside through the fourth pipeline 315.

[0068] According to some embodiments of the present invention, the battery circuit 1 includes: a compressor 103 and a four-way valve 104. The compressor 103 is connected between the first end of the first heat exchanger 102 and the first end of the battery direct cooling and direct heating plate 101. The first valve port of the four-way valve 104 is connected to the first end of the battery direct cooling and direct heating plate 101, the second valve port of the four-way valve 104 is connected to the outlet of the compressor 103, the third valve port of the four-way valve 104 is connected to the inlet of the compressor 103, and the fourth valve port of the four-way valve 104 is connected to the first end of the refrigerant side of the first heat exchanger 102.

[0069] Wherein, in the heating mode, the first valve port and the second valve port are communicated, and the third valve port and the fourth valve port are communicated. In the cooling mode, the first valve port and the third valve port are communicated, and the second valve port and the fourth valve port are communicated.

[0070] With such a setting, in the heating mode, the battery 120 has a direct heating cycle. The refrigerant transfers heat to the battery 120 in the battery direct cooling and heating plate 101, and then enters the refrigerant side of the first heat exchanger 102 to absorb heat and evaporate. It enters the compressor 103 through the fourth valve port and the third valve port. After being pressurized to a high-temperature and high-pressure state in the compressor 103, it flows out through the second valve port and the first valve port of the four-way valve 104 and enters the battery direct cooling and heating plate 101 to release heat. In the cooling mode, the battery 120 has a direct cooling cycle. The refrigerant absorbs heat from the battery 120 in the battery direct cooling and heating plate 101 to cool it down, enters the compressor 103 through the first valve port and the third valve port of the four-way valve 104. After being pressurized to a high-temperature and high-pressure state in the compressor 103, it enters the refrigerant side of the first heat exchanger 102 to condense and release heat, and then flows into the battery direct cooling and heating plate 101 to absorb heat after flowing through the first heat exchanger 102.

[0071] According to some embodiments of the present invention, a first branch 105 and a second branch 108 are arranged in parallel between the second end of the first heat exchanger 102 and the second end of the battery direct cooling and heating plate 101. A first throttling member 106 and a subcooling heat exchanger 107 are arranged on the first branch 105, and a second throttling member 109 is arranged on the second branch 108; wherein, in the heating mode, the first throttling member 106 is opened and the second throttling member 109 is closed, and in the cooling mode, the first throttling member 106 is closed and the second throttling member 109 is opened.

[0072] With such a setting, in the heating mode, the refrigerant transfers heat to the battery 120 in the battery direct cooling and heating plate 101, and is in a high-pressure saturated or subcooled state at the outlet, and then flows into the subcooling heat exchanger 107. The outlet refrigerant is transformed into a low-pressure saturated state through the throttling action of the first throttling member 106, and then enters the refrigerant side of the first heat exchanger 102 to absorb heat and evaporate, and then enters the compressor 103. After being pressurized to a high-temperature and high-pressure state in the compressor 103, it flows out through the second valve port and the first valve port of the four-way valve 104 and enters the battery direct cooling and heating plate 101 to release heat.

[0073] In the cooling mode, the battery 120 has a direct cooling cycle. The refrigerant absorbs heat from the battery 120 in the battery direct cooling and heating plate 101 to cool it down, enters the compressor 103 through the first valve port and the third valve port of the four-way valve 104. After being pressurized to a high-temperature and high-pressure state in the compressor 103, it enters the refrigerant side of the first heat exchanger 102 to condense and release heat. The outlet of the refrigerant side of the first heat exchanger 102 is in a high-pressure subcooled state. The outlet refrigerant flows through the second throttling member 109 and becomes a low-pressure saturated state through the throttling action, and then flows into the battery direct cooling and heating plate 101 to absorb heat.

[0074] According to some embodiments of the present utility model, the battery circuit 1 further includes: a sensor assembly disposed at the outlet of the subcooling heat exchanger 107 for monitoring the pressure and temperature at the outlet of the subcooling heat exchanger 107; a controller that obtains the subcooling degree of the subcooling heat exchanger 107 based on the detection values received from the sensor assembly and determines whether the subcooling degree is equal to a set value of the subcooling degree, so as to adjust the compressor 103 and the first throttling member 106.

[0075] With such a setting, when the battery 120 is in a direct heat circulation, by monitoring the subcooling degree of the cold heat exchanger in real time, when the subcooling degree of the cold heat exchanger is lower or higher than the set value of the subcooling degree, the power of the compressor 103 and the opening degree of the first throttling member 106 are adjusted, so that the subcooling degree of the refrigerant at the outlet of the subcooling heat exchanger 107 is stabilized at the set value of the subcooling degree. Thus, by controlling the subcooling degree of the refrigerant at the outlet of the cold heat exchanger, the temperature of the direct heat circulation of the battery 120 can be controlled, and thus the temperature range of the battery 120 can be stabilized within the interval of the third temperature threshold and the fourth temperature threshold.

[0076] In some embodiments, the sensor assembly includes a fourth temperature sensor 111 and a pressure sensor 112.

[0077] According to some embodiments of the present utility model, the battery circuit 1 further includes: a sixth control valve 113 and a seventh control valve 114. The sixth control valve 113 is disposed on the first branch 105. One end of the sixth control valve 113 is connected to the inlet of the subcooling heat exchanger 107 and the other end is connected to the second end of the battery direct cooling and direct heating plate 101; one end of the seventh control valve 114 is respectively connected to the first throttling member 106 and the second throttling member 109, and the other end is connected to the second end of the refrigerant side of the first heat exchanger 102.

[0078] With such a setting, in the heating mode, the first throttling member 106 is opened, the second throttling member 109 is closed, and both the sixth control valve 113 and the seventh control valve 114 are opened to achieve the direct heat circulation of the battery 120; in the cooling mode, the first throttling member 106 is closed, the second throttling member 109 is opened, the sixth control valve 113 is closed, and the seventh control valve 114 is opened to achieve the direct cooling circulation of the battery 120.

[0079] In addition, the battery circuit 1 further includes: a liquid receiver 115 and a filter 116. The liquid receiver 115 and the filter 116 are disposed on the first branch 105. The subcooling heat exchanger 107 is connected to the liquid receiver 115, the liquid receiver 115 is connected to the filter 116, and the filter 116 is connected to the first throttling member 106.

[0080] In addition, the battery circuit 1 further includes: a one-way valve 117, a gas-liquid separator 118, and an oil separator 119. The third valve port of the four-way valve 104 is connected to the inlet of the one-way valve 117. The outlet of the one-way valve 117 is connected to the gas-liquid separator 118. The gas-liquid separator 118 is connected to the inlet of the compressor 103. The outlet of the compressor 103 is connected to an oil separator 119. The outlet of the oil separator 119 is connected to the second valve port of the four-way valve 104.

[0081] Among them, multiple groups of sensor assemblies are provided in the battery circuit 1. One group of sensor assemblies is respectively provided at both ends of the battery direct cooling and heating plate 101. One group of sensor assemblies is provided between the compressor 103 and the gas-liquid separator 118. And one group of sensor assemblies is provided at the first end of the refrigerant side of the first heat exchanger 102.

[0082] In the battery circuit 1, when the lowest temperature of the battery 120 is lower than the third temperature threshold, the battery direct cooling and heating circulation circuit is in a direct heating circulation state. At this time, the battery direct cooling and heating plate 101 serves as a condenser, and the first heat exchanger 102 serves as an evaporator. The first throttling element 106 is opened, and the second throttling element 109 is closed. The sixth control valves 113 and 2 are both opened. The refrigerant transfers heat to the battery 120 in the battery direct cooling and heating plate 101 and is in a high-pressure saturated or subcooled state at the outlet, and then flows into the subcooling heat exchanger 107. The outlet refrigerant successively flows through the liquid receiver 115, the filter 116, and the first throttling element 106, and is transformed into a low-pressure saturated state through the throttling action of the first throttling element 106, and then flows through the seventh control valve 114 into the refrigerant side of the first heat exchanger 102 to absorb heat and evaporate. The refrigerant at the outlet of the first heat exchanger 102 flows through the four-way valve 104 and the one-way valve 117 and then into the gas-liquid separator 118. After gas-liquid separation, it enters the compressor 103, is pressurized to a high-temperature and high-pressure state in the compressor 103, passes through the oil separator 119, and flows out from the port 1 of the four-way valve 104 and enters the battery direct cooling and heating plate 101 to release heat.

[0083] When the highest temperature of the battery 120 is higher than the fourth temperature threshold, the battery direct cooling and heating circulation circuit is in a direct cooling circulation state, and the working mode judgment process is as Figure 4As shown in the figure. At this time, the battery direct cooling and heating plate 101 serves as an evaporator, and the first heat exchanger 102 serves as a condenser; the first throttle member 106 is closed, and the second throttle member 109 is opened; the sixth control valve 113 is closed, and the seventh control valve 114 is opened; the refrigerant absorbs heat from the battery 120 in the battery direct cooling and heating plate 101 to cool it down, and is in a low-pressure superheated state at the outlet, then flows through the four-way valve 104 and the check valve 117 and then into the gas-liquid separator 118. After gas-liquid separation, it enters the compressor 103, and is pressurized to a high-temperature and high-pressure state in the compressor 103 and then releases heat on the refrigerant side of the first heat exchanger 102. The outlet of the refrigerant side of the first heat exchanger 102 is in a high-pressure subcooled state; the outlet refrigerant flows through the seventh control valve 114 and the second throttle member 109, and becomes a low-pressure saturated state through throttling, and then flows into the battery direct cooling and heating plate 101 to absorb heat.

[0084] In addition, a fifth temperature sensor 317 is provided at the inlets of the first wind speed and the second wind speed of the ventilation adjustment assembly 3 to monitor the air temperature of the outside fresh air.

[0085] The hybrid vehicle according to the second aspect embodiment of the present invention includes a thermal management system.

[0086] According to the thermal management system of the present invention, in the working state of the direct heating cycle of the battery circuit 1, it can be specifically divided into four working modes according to whether the engine is working and the internal heat storage state of the heat accumulator 305, as shown in Figure 3 the figure.

[0087] In the heating operation mode, the second fan 311 operates, the first fan 309 stops rotating, and the circulating water pump 202 starts. In heating operation mode 1, the engine is in the working state and the heat accumulator 305 is in the heat storage state. At this time, the fifth control valve 316, the first control valve 302, and the third control valve 310 are closed, and the second control valve 306 and the fourth control valve 312 are open. At this time, the waste heat provided by the engine is relatively sufficient. The high-temperature cooling water at the engine outlet enters the second heat exchanger 201 and transfers heat to the air in the ventilation adjustment assembly 3. When the first air temperature at the air side inlet of the first heat exchanger 102 is higher than the first temperature threshold, the PTC heater 303 is closed. Adjust the frequency of the second fan 311 to control the wind speed, and adjust the power of the circulating water pump 202 to cool down the engine. After the engine temperature stabilizes at the appropriate operating temperature, adjust the wind speed of the second fan 311 so that the third air temperature at the air side outlet of the second heat exchanger 201 is lower than the second temperature threshold, and the air further absorbs heat in the heat accumulator 305. If the second air temperature at the outlet of the heat accumulator 305 does not reach the first temperature threshold, the PTC heater 303 is turned on, and the heating power is adjusted to further increase the temperature of the air at the inlet of the first heat exchanger 102 until the temperature is controlled at the first temperature threshold. The battery 120 continues to heat up. Adjust the power of the compressor 103 and the opening of the first throttle member 106 so that the supercooling degree of the refrigerant at the outlet of the subcooling heat exchanger 107 is stabilized at the set supercooling degree, and the temperature range of the battery 120 is stabilized within the range of the third temperature threshold and the fourth temperature threshold.

[0088] The difference between heating operation mode 2 and heating operation mode 1 is that: there is no heat in the heat accumulator 305 that can be released to raise the temperature of the air. At this time, the solenoid valve first control valve 302 and the fourth control valve 312 are open, and the fifth control valve 316, the second control valve 306, and the third control valve 310 are closed. The air in the ventilation adjustment assembly 3 is heated by absorbing the waste heat of the engine and the heating effect of the PTC heater 303. Control the heating power of the PTC heater 303 to keep the air inlet temperature of the first heat exchanger 102 stable at the first temperature threshold. The battery 120 continues to heat up. Adjust the power of the compressor 103 and the opening of the first throttle member 106 so that the supercooling degree of the refrigerant at the outlet of the subcooling heat exchanger 107 is stabilized at the set supercooling degree, and the temperature range of the battery 120 is stabilized within the range of the third temperature threshold and the fourth temperature threshold.

[0089] The difference between the heating operation mode 3 and the heating operation mode 1 is that the engine is not working. At this time, the second control valve 306 and the fourth control valve 312 are open, and the fifth control valve 316, the first control valve 302, and the third control valve 310 are closed. The air in the ventilation adjustment assembly 3 does not exchange heat in the second heat exchanger 201. Adjust the frequency of the second fan 311 so that the outlet air temperature of the second heat exchanger 201 is lower than the second temperature threshold. The air absorbs heat in the heat accumulator 305, and adjust the heating power of the PTC heater 303 to keep the air inlet temperature of the first heat exchanger 102 stable at the first temperature threshold. The battery 120 continues to heat up. Adjust the power of the compressor 103 and the opening of the first throttle element 106 so that the degree of subcooling of the refrigerant at the outlet of the subcooling heat exchanger 107 is stable at the set value of the degree of subcooling, and keep the temperature of the battery 120 stable within the range of the third temperature threshold and the fourth temperature threshold.

[0090] The difference between the second control valve 306 in the heating operation mode and the heating operation mode 3 is that there is no heat in the heat accumulator 305 to raise the temperature of the air. At this time, the solenoid valve first control valve 302 and the fourth control valve 312 are open, and the fifth control valve 316, the second control valve 306, and the third control valve 310 are closed. The PTC heater 303 is the only heat source. Adjust the heating power of the PTC heater 303 to keep the air inlet temperature of the first heat exchanger 102 stable at the first temperature threshold. The battery 120 continues to heat up. Adjust the power of the compressor 103 and the opening of the first throttle element 106 so that the degree of subcooling of the refrigerant at the outlet of the subcooling heat exchanger 107 is stable at the set value of the degree of subcooling, and keep the temperature of the battery 120 stable within the range of the third temperature threshold and the fourth temperature threshold.

[0091] In the heating operation modes 1 and 3, when the lowest temperature of the battery 120 can be stably maintained within the range of the third temperature threshold and the fourth temperature threshold, then adjust the frequency of the second fan 311 to reduce the wind speed and increase the outlet air temperature of the second heat exchanger 201 so that this temperature is higher than the second temperature threshold. The air heats the phase change material in the heat accumulator 305 to cause phase change and heat storage. The PTC heating power is adjusted accordingly to keep the air inlet temperature of the first heat exchanger 102 always stable at the first temperature threshold until the heat storage amount of the heat accumulator 305 is saturated. Then adjust the frequency of the second fan 311 and the heating power of the PTC heater 303 to maintain the stable operation of the direct heating cycle.

[0092] In the refrigeration working mode, the fifth control valve 316, the fourth control valve 312 and the third control valve 310 are opened, the second control valve 306 and the first control valve 302 are closed, the second fan 311 and the first fan 309 operate, and the circulating water pump 202 is started. At this time, the engine cooling circuit 2 and the direct cooling and direct heating circulation circuit of the battery 120 operate separately and independently. Adjust the frequency of the second fan 311 and the opening degrees of the first control valve 302 and the fourth control valve 312 to make the air sides of the first heat exchanger 102 and the second heat exchanger 201 reach the designed air volume. Adjust the power of the circulating water pump 202, the power of the compressor 103 and the opening degree of the second throttle member 109 to make the refrigerant at the outlet of the first heat exchanger 102 stable at the first temperature threshold, the temperature range of the battery 120 stable within the range between the first temperature threshold and the second temperature threshold, and the engine temperature stable at the working appropriate temperature value.

[0093] Therefore, according to the heat management system of the present utility model, when the heat management system is applied to a hybrid vehicle, in the direct cooling cycle state, the engine cooling circuit and the battery pack cooling circulation circuit can also operate separately and independently. When the temperature of the battery 120 is too low, while directly heating the battery 120 by using the direct cooling and direct heating technology of the battery 120, since the temperature of the engine cooling water is relatively high, the heat of the cooling water is transferred to the battery circuit 1 through the ventilation adjustment assembly 3, so that the air temperature in the direct heating cycle is higher than the ambient temperature. Under a certain evaporation pressure, it has a better heating effect, can shorten the start-up time of the heat management system, enable the battery 120 to heat up at a faster rate, and at the same time cools the engine, improving the energy utilization rate of the engine. At the same time, since the air temperature in the direct heating cycle is relatively high, the evaporator is prevented from frosting and the heat exchange efficiency is reduced. In addition, the accumulator 305 and the PTC heater 303 can be used for auxiliary heating. And when there is no refrigeration or heating requirement for the battery 120 and the engine is working, the heat can be stored in the accumulator 305, achieving an energy-saving effect, thereby improving the energy utilization efficiency in the heat management system.

[0094] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present utility model.

[0095] In the description of this specification, the description referring to terms such as "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples", etc. means that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present utility model. In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiment or example.

[0096] Although the embodiments of the present utility model have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present utility model, and the scope of the present utility model is defined by the claims and their equivalents.

Claims

1. A thermal management system, characterized in that: include: A battery circuit, comprising a battery direct cooling and direct heating plate and a first heat exchanger, wherein the battery direct cooling and direct heating plate is disposed on one side of the battery and is used to perform heat exchange with the battery, and the battery direct cooling and direct heating plate is connected in series with a refrigerant side of the first heat exchanger; An engine cooling circuit includes a second heat exchanger and a cooling medium therein for cooling the engine; A ventilation adjustment assembly, wherein the ventilation adjustment assembly is connected to the air side of the first heat exchanger and the air side of the second heat exchanger respectively, and the ventilation adjustment assembly selectively connects the first heat exchanger and the second heat exchanger to achieve heat exchange between the engine cooling circuit and the battery circuit.

2. The thermal management system according to claim 1, characterized in that: The ventilation adjustment assembly includes: a first pipeline and a first control valve, the first pipeline is connected between the air side outlet of the first heat exchanger and the air side inlet of the second heat exchanger, and the first control valve is arranged on the first pipeline.

3. The thermal management system according to claim 2, characterized in that: The ventilation and conditioning assembly further includes: a PTC heater, which is disposed on the first pipeline and has an outlet connected to an inlet on the air side of the first heat exchanger.

4. The thermal management system according to claim 3, characterized in that: The ventilation and adjustment assembly also includes: a second pipeline, a heat accumulator and a second control valve, one end of the second pipeline is connected to the air side outlet of the first heat exchanger and the other end is connected to one side of the inlet of the PTC heater, the heat accumulator is arranged on the second pipeline, and the second control valve is arranged on the second pipeline and on the inlet side of the heat accumulator.

5. The thermal management system according to claim 4, characterized in that: Also includes: The controller is configured to selectively open the second pipeline according to whether the heat accumulator is in a heat storage state.

6. The thermal management system according to claim 4, characterized in that: Also includes: a first temperature sensor, disposed at an inlet of the air side of the first heat exchanger, for monitoring a first wind temperature at the inlet of the air side of the first heat exchanger; A second temperature sensor is disposed at the outlet of the heat accumulator and is used to monitor a second air temperature at the outlet of the heat accumulator; A controller is connected to the first temperature sensor and the second temperature sensor respectively, and is configured to control the opening and closing of the PTC heater according to whether the received first wind temperature and / or the second wind temperature is higher than a first temperature threshold set at the inlet of the air side of the first heat exchanger.

7. The thermal management system according to claim 4, characterized in that: The ventilation adjustment assembly also includes: a first fan, one end of which is used to introduce fresh air from the outside and the other end of which is connected to an inlet on the air side of the first heat exchanger through a third control valve; A second fan, one end of the second fan is used to introduce fresh air from the outside and the other end is connected to the inlet of the air side of the second heat exchanger through a fourth control valve.

8. The thermal management system according to claim 7, characterized in that: Also includes: a third temperature sensor, disposed at an outlet of the air side of the second heat exchanger, for monitoring a third air temperature at the outlet of the air side of the second heat exchanger; A controller is connected to the third temperature sensor, and is configured to control the rotation speed of the second fan according to whether the received third wind temperature is higher than a second temperature threshold when the phase change material in the heat storage device undergoes a phase change.

9. The thermal management system according to claim 7, characterized in that: The ventilation adjustment assembly also includes: A third pipeline, one end of which is connected to the outlet of the air side of the first heat exchanger and the other end of which is connected to the outside air; A fourth pipeline, one end of which is connected to the outlet of the air side of the second heat exchanger through a fifth control valve and the other end of which is connected to the outside air.

10. The thermal management system according to any one of claims 1 to 9, characterized in that: The battery circuit comprises: A compressor connected between the first end of the first heat exchanger and the first end of the battery direct cooling and direct heating plate; A four-way valve, wherein the first valve port of the four-way valve is connected to the first end of the battery direct cooling and direct heating plate, the second valve port of the four-way valve is connected to the outlet of the compressor, the third valve port of the four-way valve is connected to the inlet of the compressor, and the fourth valve port of the four-way valve is connected to the first end of the refrigerant side of the first heat exchanger; wherein, in heating mode, the first valve port is connected to the second valve port, and the third valve port is connected to the fourth valve port, and in cooling mode, the first valve port is connected to the third valve port, and the second valve port is connected to the fourth valve port.

11. The thermal management system according to claim 10, characterized in that: A first branch and a second branch connected in parallel are arranged between the second end of the first heat exchanger and the second end of the battery direct cooling and direct heating plate, the first branch is provided with a first throttling device and a supercooling heat exchanger, and the second branch is provided with a second throttling device; wherein, in the heating mode, the first throttling device is opened and the second throttling device is closed, and in the cooling mode, the first throttling device is closed and the second throttling device is opened.

12. The thermal management system according to claim 11, characterized in that: The battery circuit also includes: a sensor assembly, which is arranged at the outlet of the subcooling heat exchanger and is used to monitor the pressure and temperature of the outlet of the subcooling heat exchanger; a controller, which obtains the subcooling degree of the subcooling heat exchanger according to the detection value received from the sensor assembly and determines whether the subcooling degree is equal to the subcooling degree setting value, so as to adjust the compressor and the first throttling device.

13. A hybrid vehicle, characterized in that: A thermal management system comprising any one of claims 1-12.

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