Thermal management system and vehicle

Abstract

The application provides a thermal management system and a vehicle. The thermal management system comprises a battery pack and a motor cooling loop. The battery pack comprises a box body and a battery core. The box body comprises a containing cavity, and the battery core is arranged in the containing cavity. The motor cooling loop is used for being communicated with the containing cavity, so that a temperature adjusting medium in the motor cooling loop enters the containing cavity and heats the battery core. The thermal management system provided by the embodiment of the application can communicate the motor cooling loop with the containing cavity of the box body of the battery pack. When the battery core of the battery pack needs to be heated and the motor generates a certain amount of heat, the temperature adjusting medium in the motor cooling loop can enter the containing cavity of the box body, so as to heat the battery core. Therefore, the waste heat of the motor is recycled, which is beneficial to reduce the energy utilization rate of the thermal management system and reduce the energy consumption of the vehicle.

Description

Technical Field

[0001] This application relates to the field of thermal management technology, specifically to a thermal management system and a vehicle. Background Technology

[0002] In related technologies, submerged battery packs in vehicles immerse the battery cells in a temperature-regulating medium within the pack, allowing the medium to directly contact the cell structure and rapidly cool or heat the cells. However, the thermal management system of submerged battery packs typically heats the temperature-regulating medium directly via a PTC (Positive Temperature Coefficient) heater, and then uses the medium to heat the battery cells. This results in excessive energy consumption when the thermal management system heats the cells of the submerged battery pack. Utility Model Content

[0003] Embodiments of this application provide a thermal management system and a vehicle that can improve the technical problem of excessive energy consumption when the thermal management system heats the cells of the battery pack.

[0004] In a first aspect, embodiments of this application provide a thermal management system, including:

[0005] A battery pack includes a housing and battery cells, the housing including a receiving cavity, and the battery cells disposed within the receiving cavity;

[0006] A motor cooling circuit is provided, which is connected to the receiving cavity so that the temperature regulating medium in the motor cooling circuit enters the receiving cavity and heats the battery cell.

[0007] In some embodiments, the thermal management system further includes a battery thermal management circuit, which is connected to the housing cavity to allow a temperature regulating medium within the battery thermal management circuit to enter the housing cavity and cool or heat the battery cell. By allowing the temperature regulating medium within the battery thermal management circuit to enter the housing cavity, the temperature regulating medium can directly contact the battery cell and rapidly exchange heat, enabling faster cooling or heating of the battery cell.

[0008] In some embodiments, the thermal management system includes a first control valve, and the motor cooling circuit and the battery thermal management circuit are respectively connected to the first control valve. The first control valve is used to control the on / off state of the motor cooling circuit and the thermal management circuit. When the first control valve connects the motor cooling circuit and the thermal management circuit, the motor cooling circuit is connected to the receiving cavity through the thermal management circuit, so that the temperature regulating medium in the motor cooling circuit can enter the receiving cavity of the battery pack housing through the thermal management circuit, so that the temperature regulating medium that has absorbed the heat of the motor heats the battery cells in the receiving cavity.

[0009] In some embodiments, the first control valve includes a first valve port and a second valve port connected to the thermal management circuit, and a third valve port and a fourth valve port connected to the motor cooling circuit. The first control valve is used to connect the first valve port and the third valve port, and the second valve port and the fourth valve port, so that the motor cooling circuit and the thermal management circuit are connected. The temperature regulating medium in the motor cooling circuit can enter the thermal management circuit through the first valve port and the third valve port of the first control valve, and after heating the battery cell in the housing cavity, it flows back to the motor cooling circuit through the second valve port and the fourth valve port of the first control valve, so that the temperature regulating medium can reabsorb the heat of the motor and heat the battery cell again.

[0010] The first control valve is also used to control the connection between the first valve port and the second valve port, and the connection between the third valve port and the fourth valve port, so as to disconnect the motor cooling circuit and the thermal management circuit, so that the temperature regulating medium in the motor cooling circuit and the thermal management circuit can operate independently and avoid mutual interference.

[0011] In some embodiments, the thermal management circuit includes a first pump, the input of which is connected to the first valve port; the motor cooling circuit includes a second pump, the output of which is connected to the third valve port. When the first pump of the thermal management circuit and the second pump of the motor cooling circuit are running, the flow direction of the temperature regulating medium in the circulation loop formed by the connection of the thermal management circuit and the motor cooling circuit is aligned, which helps to increase the flow rate of the temperature regulating medium, thereby improving the heating efficiency of the battery cell and the cooling efficiency of the motor.

[0012] In some embodiments, the output end of the first pump is connected to the inlet of the receiving cavity, and the second valve port is connected to the outlet of the receiving cavity. The temperature regulating medium in the motor cooling circuit flows into the thermal management circuit via the first control valve and can be quickly transferred to the receiving cavity of the battery pack housing by the first pump, which helps improve the heating efficiency of the battery cells. Furthermore, the temperature regulating medium in the housing housing can flow back to the motor cooling circuit through the second valve port of the first control valve, realizing the recycling of the temperature regulating medium.

[0013] In some embodiments, the motor cooling circuit includes a motor and a cooler connected in series. The output terminal of the motor is connected to the input terminal of the second pump, and the input terminal of the cooler is connected to the fourth valve port. When the first and third valve ports of the first control valve are connected, and the second and fourth valve ports are connected, the temperature regulating medium passing through the motor can be quickly transferred to the thermal management circuit via the second pump and the first control valve, which is beneficial to improving the heating efficiency of the battery cell. When the first and second valve ports of the first control valve are connected, and the third and fourth valve ports are connected, the temperature regulating medium of the motor can be quickly transferred to the cooler via the second pump to cool the temperature regulating medium, which is beneficial to improving the cooling efficiency of the motor.

[0014] In some embodiments, the motor cooling circuit includes a cooler, a branch pipe, and a second control valve. The branch pipe is connected in parallel with the cooler, and both the cooler and the branch pipe are connected to the second control valve. The second control valve controls the on / off state of the branch pipe and the cooler. When the temperature regulating medium in the motor cooling circuit absorbs the waste heat of the motor and heats the battery cells in the thermal management circuit, the second control valve can control the branch pipe to open and the cooler to close. This prevents the temperature regulating medium in the motor cooling circuit from decreasing in temperature after passing through the cooler, thus avoiding waste of the motor's waste heat and improving the heating efficiency of the battery cells.

[0015] In some embodiments, the thermal management system further includes a refrigeration circuit comprising a compressor, a condenser, and a cooler connected in series. The cooler is connected to the thermal management circuit to cool the temperature regulating medium within the thermal management circuit. When the thermal management circuit is used to cool the cells of the battery pack, cooling the temperature regulating medium within the thermal management circuit via the cooler reduces the temperature of the temperature regulating medium entering the housing cavity, thereby improving the cooling efficiency of the thermal management circuit for the battery cells.

[0016] This application embodiment also provides a vehicle, including the thermal management system described above, the thermal management system comprising:

[0017] A battery pack includes a housing and battery cells, the housing including a receiving cavity, and the battery cells disposed within the receiving cavity;

[0018] A motor cooling circuit is provided, which is connected to the receiving cavity so that the temperature regulating medium in the motor cooling circuit enters the receiving cavity and heats the battery cell.

[0019] The beneficial effects of the embodiments of this application are as follows:

[0020] The thermal management system provided in this application embodiment enables the motor cooling circuit to be connected to the housing cavity of the battery pack. When it is necessary to heat the battery cells and the motor generates a certain amount of heat, the temperature regulating medium in the motor cooling circuit can enter the housing cavity to heat the battery cells, thereby realizing the recovery of waste heat from the motor. This is beneficial to reducing the energy utilization rate of the thermal management system and reducing the energy consumption of the vehicle. Attached Figure Description

[0021] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0022] Figure 1 A schematic diagram of the structure of one embodiment of the vehicle provided in this application;

[0023] Figure 2 This is a schematic diagram of an embodiment of the thermal management system provided in this application, wherein the motor cooling circuit is connected to the thermal management circuit through a first control valve, and the second control valve controls the branch pipe to be open while the cooler is disconnected.

[0024] Figure 3 A cross-sectional view of one embodiment of the battery pack provided in this application;

[0025] Figure 4 This is a schematic diagram of an embodiment of the thermal management system provided in this application, wherein the motor cooling circuit is disconnected from the thermal management circuit through a first control valve, and the second control valve controls the branch pipe to disconnect while the cooler is turned on.

[0026] Figure 5 This is a schematic diagram of an embodiment of the thermal management system provided in this application, wherein the motor cooling circuit is connected to the thermal management circuit through a first control valve, and the second control valve controls the branch pipe to disconnect and the cooler to be connected.

[0027] Explanation of reference numerals in the attached figures:

[0028] Vehicle 1; Thermal Management System 10; Battery Thermal Management Circuit 11; Battery Pack 111; Housing 1110; Receiving Chamber 1111; Inlet 1112; Outlet 1113; Battery Cell 1114; Second Pipeline 112; Second Liquid Inlet Section 1121; Second Liquid Outlet Section 1122; First Pump 113; Heater 114; Storage Tank 115; Motor Cooling Circuit 12; First Pipeline 121; First Liquid Inlet Section 1211; First Liquid Outlet Section 1212; Motor 122; Cooler 123; Second pump 124; Branch pipe 125; Second control valve 126; Fifth valve port 1261; Sixth valve port 1262; Seventh valve port 1263; Refrigeration circuit 13; Compressor 131; Condenser 132; Refrigerator 133; First expansion valve 134; Second expansion valve 135; Evaporator 136; First control valve 14; First valve port 141; Second valve port 142; Third valve port 143; Fourth valve port 144. Detailed Implementation

[0029] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application. In addition, it should be understood that the specific embodiments described herein are only for illustration and explanation of this application and are not intended to limit this application. In this application, unless otherwise stated, directional terms such as "upper" and "lower" generally refer to the upper and lower positions of the device in actual use or operation, specifically the drawing directions in the accompanying drawings; while "inner" and "outer" refer to the outline of the device.

[0030] This application provides a thermal management system and a vehicle. These will be described in detail below.

[0031] Figure 1 This is a schematic diagram of the structure of one embodiment of vehicle 1 provided in this application. Figure 1 As shown, vehicle 1 includes a thermal management system 10, which manages the heat of vehicle 1 so that the heat generated by vehicle 1 during use can be used rationally to reduce the energy consumption of vehicle 1.

[0032] Figure 2 This is a schematic diagram of the structure of one embodiment of the thermal management system provided in this application. Figure 3 A cross-sectional view of one embodiment of the battery pack provided in this application. Figure 2 and Figure 3As shown, the thermal management system 10 includes a battery pack 111 and a motor cooling circuit 12. The battery pack 111 includes a housing 1110 and battery cells 1114. The housing 1110 includes a receiving cavity 1111, and the battery cells 1114 are disposed within the receiving cavity 1111. The receiving cavity 1111 of the housing 1110 of the battery pack 111 can be used to contain a temperature regulating medium, so that the temperature regulating medium directly contacts the battery cells 1114 within the receiving cavity 1111 and exchanges heat with the battery cells 1114 to regulate the temperature of the battery cells 1114.

[0033] It should be noted that the temperature regulating medium can cool the battery cell 1114. For example, the temperature of the temperature regulating medium entering the receiving cavity 1111 can be kept low, so that when the temperature regulating medium in the receiving cavity 1111 comes into contact with the battery cell 1114, it can absorb the heat of the battery cell 1114 and cool the battery cell 1114.

[0034] Of course, the temperature regulating medium can also heat the battery cell 1114. For example, the temperature of the temperature regulating medium entering the receiving cavity 1111 can be higher, so that when the temperature regulating medium in the receiving cavity 1111 comes into contact with the battery cell 1114, heat can be transferred to the battery cell 1114 to heat the battery cell 1114.

[0035] In this embodiment, the temperature regulating medium can be water, oil, or other media that can enter the receiving cavity 1111, contact the battery cell 1114, and exchange heat with the battery cell 1114. No limitation is made here.

[0036] Continue to refer to Figure 2 The motor cooling circuit 12 is used to communicate with the housing cavity 1111 of the housing 1110 so that the temperature regulating medium in the motor cooling circuit 12 can enter the housing cavity 1111 and heat the battery cell 1114.

[0037] The thermal management system 10 provided in this application embodiment enables the motor cooling circuit 12 to be connected to the receiving cavity 1111 of the battery pack 111's housing 1110. When it is necessary to heat the battery cells 1114 of the battery pack 111 and the motor 122 generates a certain amount of heat, the temperature regulating medium in the motor cooling circuit 12 can enter the receiving cavity 1111 of the housing 1110 to heat the battery cells 1114, thereby realizing the recovery of waste heat from the motor 122. This is beneficial to reduce the energy utilization rate of the thermal management system 10 and reduce the energy consumption of the vehicle 1.

[0038] Understandably, the motor cooling circuit 12 is primarily used to cool the motor 122. The heat generated by the motor 122 is absorbed by the temperature regulating medium within the motor cooling circuit 12, causing the temperature of the temperature regulating medium within the motor cooling circuit 12 to rise. Therefore, when the thermal management system needs to heat the batteries in the battery pack 111, by connecting the motor cooling circuit 12 to the receiving cavity 1111 of the housing 1110, the higher-temperature temperature regulating medium in the motor cooling circuit 12 can flow into the receiving cavity 1111 of the housing 1110 and come into contact with the battery cells 1114 within the receiving cavity 1111, thereby transferring heat to the lower-temperature battery cells 1114 and heating them.

[0039] It should be noted that the thermal management system 10 of this application embodiment can be used in any vehicle 1 having a motor 122 and a battery pack 111, or in other devices having a motor 122 and a battery pack 111.

[0040] Continue to refer to Figure 2 The thermal management system 10 also includes a battery thermal management circuit 11, which is connected to the housing cavity 1111 so that the temperature regulating medium in the battery thermal management circuit 11 enters the housing cavity 1111 and cools or heats the battery cell 1114.

[0041] By allowing the temperature regulating medium in the battery thermal management circuit 11 to enter the receiving cavity 1111, the temperature regulating medium can directly contact the battery cell 1114 and quickly exchange heat, thus enabling faster cooling or heating of the battery cell 1114.

[0042] The battery thermal management circuit 11 can be used to cool the temperature regulating medium, thereby lowering its temperature. This allows the lower-temperature regulating medium to enter the receiving cavity 1111 and absorb heat from the battery cell 1114, thus cooling the battery cell 1114. Alternatively, the battery thermal management circuit 11 can also be used to heat the temperature regulating medium, thereby increasing its temperature. This allows the higher-temperature regulating medium to enter the receiving cavity 1111 and transfer heat to the battery cell 1114, thus heating the battery cell 1114.

[0043] In some embodiments, such as Figure 2As shown, the thermal management system 10 may include a first control valve 14. The motor cooling circuit 12 and the battery thermal management circuit 11 are respectively connected to the first control valve 14. The first control valve 14 is used to control the on / off state of the motor cooling circuit 12 and the battery thermal management circuit 11. That is, the first control valve 14 can control the connection between the motor cooling circuit 12 and the battery thermal management circuit 11, so that the temperature regulating medium can flow between the motor cooling circuit 12 and the battery thermal management circuit 11. The first control valve 14 can also control the disconnection between the motor cooling circuit 12 and the battery thermal management circuit 11, so that the temperature regulating medium in the motor cooling circuit 12 flows in the motor cooling circuit 12, and the temperature regulating medium in the battery thermal management circuit 11 flows in the battery thermal management circuit 11.

[0044] When the first control valve 14 connects the motor cooling circuit 12 and the battery thermal management circuit 11, the motor cooling circuit 12 is connected to the housing cavity 1111 through the battery thermal management circuit 11, so that the temperature regulating medium in the motor cooling circuit 12 can enter the housing cavity 1111 of the battery pack 111 through the battery thermal management circuit 11, so that the temperature regulating medium that has absorbed the heat of the motor 122 heats the battery cell 1114 in the housing cavity 1111.

[0045] Continue to refer to Figure 2 The first control valve 14 may include a first valve port 141 and a second valve port 142 connected to the battery thermal management circuit 11, and a third valve port 143 and a fourth valve port 144 connected to the motor cooling circuit 12. The first control valve 14 is used to connect the first valve port 141 and the third valve port 143, and connect the second valve port 142 and the fourth valve port 144, so as to connect the motor cooling circuit 12 and the battery thermal management circuit 11.

[0046] Therefore, the temperature regulating medium in the motor cooling circuit 12 can enter the battery thermal management circuit 11 through the first valve port 141 and the third valve port 143 of the first control valve 14, and after heating the battery cell 1114 in the housing cavity 1111 of the housing 1110, it flows back to the motor cooling circuit 12 through the second valve port 142 and the fourth valve port 144 of the first control valve 14, so that the temperature regulating medium can reabsorb the heat of the motor 122 and heat the battery cell 1114 again.

[0047] The first control valve 14 is also used to control the connection between the first valve port 141 and the second valve port 142, and the connection between the third valve port 143 and the fourth valve port 144, so as to disconnect the motor cooling circuit 12 and the battery thermal management circuit 11.

[0048] Therefore, when it is not necessary to recover the waste heat of the motor 122 to heat the battery cell 1114, the first valve port 141 and the second valve port 142 of the first control valve 14 can be connected, and the third valve port 143 and the fourth valve port 144 can be connected, so that the motor cooling circuit 12 and the battery thermal management circuit 11 are disconnected, thereby allowing the temperature regulating medium in the motor cooling circuit 12 and the battery thermal management circuit 11 to operate independently and avoid mutual interference.

[0049] Specifically, the motor cooling circuit 12 includes a first pipe 121, which includes a first inlet section 1211 and a first outlet section 1212. The battery thermal management circuit 11 includes a second pipe 112, which includes a second inlet section 1121 and a second outlet section 1122. The output end of the first inlet section 1211 of the first pipe 121 is connected to the third valve port 143 of the first control valve 14, and the input end of the first outlet section 1212 of the first pipe 121 is connected to the fourth valve port 144 of the first control valve 14. The output end of the second inlet section 1121 of the second pipe 112 is connected to the second valve port 142 of the first control valve 14, and the input end of the second outlet section 1122 of the second pipe 112 is connected to the first valve port 141 of the first control valve 14.

[0050] When the first control valve 14 connects the first valve port 141 and the third valve port 143, and connects the second valve port 142 and the fourth valve port 144, the temperature regulating medium in the first liquid inlet section 1211 of the first pipe 121 in the motor cooling circuit 12 can enter the second liquid outlet section 1122 of the second pipe 112 in the battery thermal management circuit 11 through the third valve port 143 and the first valve port 141. The temperature regulating medium in the second liquid outlet section 1122 will flow along the battery thermal management circuit 11 into the receiving cavity 1111 of the housing 1110 of the battery pack 111 to heat the battery cell 1114.

[0051] The temperature regulating medium in the housing cavity 1111 of the housing 1110 flows into the second inlet section 1121 of the second pipeline 112 along the battery thermal management circuit 11, and flows back to the first outlet section 1212 of the first pipeline 121 of the motor cooling circuit 12 through the second valve port 142 and the fourth valve port 144 of the first control valve 14.

[0052] The temperature regulating medium in the first outlet section 1212 flows along the motor cooling circuit 12 through the motor 122 to absorb the heat of the motor 122 and cool it. Afterwards, the temperature regulating medium that has absorbed the heat of the motor 122 flows along the motor cooling circuit 12 into the first inlet section 1211 of the first pipe 121 and repeats the above-described flow pattern for heating the battery cell 1114.

[0053] In this embodiment, the first control valve 14 can be a four-way valve or other control valve structure. It only needs to be able to control the opening and closing of the motor cooling circuit 12 and the battery thermal management circuit 11. When the motor cooling circuit 12 and the battery thermal management circuit 11 are connected, the temperature regulating medium in the motor cooling circuit 12 can enter the receiving cavity 1111 of the battery pack 111's housing 1110 through the battery thermal management circuit 11. After the temperature regulating medium absorbs the heat of the motor 122 and heats the battery cell 1114 in the receiving cavity 1111, it can flow back to the motor cooling circuit 12.

[0054] In some embodiments, such as Figure 2 As shown, the battery thermal management circuit 11 may include a first pump 113, the input of which is connected to a first valve port 141. The motor cooling circuit 12 includes a second pump 124, the output of which is connected to a third valve port 143. Therefore, when the first pump 113 of the battery thermal management circuit 11 and the second pump 124 of the motor cooling circuit 12 are running, the flow direction of the temperature regulating medium within the circulation loop formed by the battery thermal management circuit 11 and the motor cooling circuit 12 is aligned, which helps to increase the flow rate of the temperature regulating medium, thereby improving the heating efficiency of the battery cell 1114 and the cooling efficiency of the motor 122.

[0055] Specifically, the output end of the first pump 113 can be connected to the inlet 1112 of the receiving cavity 1111 of the housing 1110, and the second valve port 142 of the first control valve 14 can be connected to the outlet 1113 of the receiving cavity 1111 of the housing 1110. Thus, when the first valve port 141 and the third valve port 143 of the first control valve 14 are connected, and the second valve port 142 and the fourth valve port 144 are connected, the temperature regulating medium in the motor cooling circuit 12 flows into the battery thermal management circuit 11 through the first control valve 14 and can then be quickly transferred to the receiving cavity 1111 of the housing 1110 of the battery pack 111 via the first pump 113, which helps improve the heating efficiency of the battery cells 1114. Furthermore, the temperature regulating medium in the receiving cavity 1111 of the housing 1110 can flow back to the motor cooling circuit 12 through the second valve port 142 of the first control valve 14, realizing the recycling of the temperature regulating medium.

[0056] In other embodiments, the motor cooling circuit 12 can also be directly connected to the housing 1110 of the battery pack 111, so that the temperature regulating medium in the motor cooling circuit 12 can enter the housing 1111 from the inlet 1112 of the housing 1110 and heat the battery cell 1114. After that, the temperature regulating medium in the housing 1111 flows back to the motor cooling circuit 12 through the outlet 1113 of the housing 1111.

[0057] In some embodiments, such as Figure 2As shown, the battery thermal management circuit 11 also includes a heater 114, which is used to heat the temperature regulating medium within the battery thermal management circuit 11. Therefore, when it is necessary to heat the cells 1114 of the battery pack 111, the heater 114 can also heat the temperature regulating medium within the battery thermal management circuit 11, allowing the heated temperature regulating medium to enter the receiving cavity 1111 of the housing 1110 to heat the cells 1114 within the receiving cavity 1111. Especially when the vehicle 1 is in idle mode or the heat generated by the motor 122 is low, the heating efficiency of the motor cooling circuit 12 using the waste heat of the motor 122 to heat the cells 1114 of the battery pack 111 is low. In this case, the battery thermal management circuit 11 can use the heater 114 to heat the cells 1114 of the battery pack 111.

[0058] The heater 114 can be installed on the pipeline between the first pump 113 and the first control valve 14. Specifically, the output end of the second liquid outlet section 1122 of the second pipeline 112 is connected to one end of the heater 114, and the other end of the heater 114 is connected to the input end of the first pump 113 via a pipeline. The heater 114 can be a PTC (Positive Temperature Coefficient) heater or other components capable of heating the temperature regulating medium within the battery thermal management circuit 11; no limitation is made here.

[0059] In some embodiments, the battery thermal management circuit 11 may further include a reservoir 115 for storing a temperature regulating medium, so that when the temperature regulating medium in the battery thermal management circuit 11 is insufficient, it can be replenished through the reservoir 115. The reservoir 115 is connected to the input terminal of the first pump 113 to facilitate the replenishment of the temperature regulating medium.

[0060] In some embodiments, such as Figure 2 As shown, the motor cooling circuit 12 may include a motor 122 and a cooler 123 connected in series. The output terminal of the motor 122 is connected to the input terminal of the second pump 124, and the input terminal of the cooler 123 is connected to the fourth valve port 144. Therefore, when the first valve port 141 and the third valve port 143 of the first control valve 14 are connected, and the second valve port 142 and the fourth valve port 144 are connected, the temperature regulating medium passing through the motor 122 can be quickly transferred to the battery thermal management circuit 11 via the second pump 124 and the first control valve 14, which is beneficial to improving the heating efficiency of the battery cell 1114. When the first valve port 141 and the second valve port 142 of the first control valve 14 are connected, and the third valve port 143 and the fourth valve port 144 are connected, the temperature regulating medium of the motor 122 can be quickly transferred to the cooler 123 via the second pump 124 to cool the temperature regulating medium, which is beneficial to improving the cooling efficiency of the motor 122.

[0061] Specifically, one end of the cooler 123 is connected to the output end of the first liquid outlet pipe of the first pipeline 121, and the other end of the cooler 123 is connected to the motor 122, so that the temperature regulating medium cooled by the cooler 123 can flow back into the motor 122 to continue cooling the motor 122.

[0062] In some embodiments, such as Figure 2 As shown, the motor cooling circuit 12 includes a cooler 123, a branch pipe 125, and a second control valve 126. The branch pipe 125 is connected in parallel with the cooler 123, and both the cooler 123 and the branch pipe 125 are connected to the second control valve 126. The second control valve 126 is used to control the on / off state of the branch pipe 125 and the cooler 123. Therefore, when the temperature regulating medium in the motor cooling circuit 12 absorbs the waste heat from the motor 122 and heats the battery cells 1114 of the battery pack 111 in the battery thermal management circuit 11, the second control valve 126 can control the branch pipe 125 to open and the cooler 123 to close. This prevents the temperature regulating medium in the motor cooling circuit 12 from decreasing in temperature after passing through the cooler 123, thus avoiding waste of the waste heat from the motor 122 and improving the heating efficiency of the battery cells 1114.

[0063] When it is not necessary to heat the battery cell 1114 through the temperature regulating medium in the motor cooling circuit 12, such as Figure 4 As shown, the branch pipe 125 can be disconnected and the cooler 123 can be turned on by the second control valve 126, so that the temperature regulating medium in the motor cooling circuit 12 can be dissipated through the cooler 123, which is beneficial to improving the cooling efficiency of the motor 122.

[0064] Of course, such as Figure 5 As shown, when the temperature regulating medium in the motor cooling circuit 12 heats the battery cell 1114, and the temperature regulating medium in the motor cooling circuit 12 absorbs too much heat from the motor 122, the second control valve 126 can control the branch pipe 125 to disconnect and the cooler 123 to open. This allows the temperature regulating medium in the motor cooling circuit 12 to first enter the battery thermal management circuit 11 to cool the battery cell 1114 in the battery pack 111. Then, it flows back to the motor cooling circuit 12 and is cooled by the cooler 123 before cooling the motor 122 again. When the temperature regulating medium heats the battery cell 1114, it can also have a good cooling effect on the motor 122.

[0065] Specifically, the second control valve 126 includes a fifth valve port 1261, a sixth valve port 1262, and a seventh valve port 1263. The fifth valve port 1261 is connected to the output end of the first liquid outlet section 1212 of the first pipeline 121. The sixth valve port 1262 is connected to one end of the cooler 123. The seventh valve port 1263 is connected to one end of the branch pipeline 125, and the other end of the branch pipeline 125 is connected to the other end of the cooler 123. The other end of the branch pipeline 125 and the other end of the cooler 123 are respectively connected to the motor 122. When the second control valve 126 controls the fifth valve port 1261 and the sixth valve port 1262 to open, and the seventh valve port 1263 to close, the cooler 123 is turned on and the branch pipeline 125 is turned off. When the second control valve 126 controls the opening of the seventh valve port 1263 and the fifth valve port 1261, and the closing of the sixth valve port 1262, the branch pipe 125 can be connected and the cooler 123 can be disconnected.

[0066] The second control valve 126 can be a three-way valve or other control valve that can control the on / off state of branch pipe 125 and cooler 123, and there are no restrictions here.

[0067] In some embodiments, such as Figure 2 As shown, the thermal management system 10 also includes a cooling circuit 13, which includes a compressor 131, a condenser 132, and a cooler 133 connected in series. The cooler 133 is connected to the battery thermal management circuit 11 to cool the temperature regulating medium within the battery thermal management circuit 11. When the battery thermal management circuit 11 is used to cool the cells 1114 of the battery pack 111, the cooling of the temperature regulating medium within the battery thermal management circuit 11 by the cooler 133 can reduce the temperature of the temperature regulating medium entering the receiving cavity 1111 of the housing 1110, thereby improving the cooling efficiency of the battery thermal management circuit 11 for the cells 1114 of the battery pack 111.

[0068] Specifically, the output end of the compressor 131 of the refrigeration circuit 13 is connected to the input end of the condenser 132, the output end of the condenser 132 is connected to the input end of the refrigeration unit 133 through the first expansion valve 134, and the output end of the refrigeration unit 133 is connected to the input end of the compressor 131.

[0069] The refrigeration circuit 13 also includes a second expansion valve 135 and an evaporator 136. The input end of the second expansion valve 135 is connected to the output end of the condenser 132, and the output end of the second expansion valve 135 is connected to the input end of the evaporator 136. The output end of the evaporator 136 is connected to the input end of the compressor 131. The evaporator 136 can be used to cool the passenger compartment or other spaces in the vehicle 1 that require cooling.

[0070] This application also provides a vehicle that includes a thermal management system. The specific structure of the thermal management system is as described in the above embodiments. Since this vehicle adopts all the technical solutions of all the above embodiments, it has at least all the beneficial effects brought about by the technical solutions of the above embodiments, which will not be described in detail here.

[0071] The motor 122 of the thermal management system 10 can be a motor 122 used to drive the wheels of the vehicle 1 to rotate, or it can be a motor 122 inside the vehicle 1 used to perform other functions; there is no limitation here.

[0072] The embodiments of this application have been described in detail above. Specific examples have been used to illustrate the principles and implementation methods of this application. The description of the above embodiments is only for the purpose of helping to understand the method and core ideas of this application. At the same time, for those skilled in the art, there will be changes in the specific implementation methods and application scope based on the ideas of this application. Therefore, the content of this specification should not be construed as a limitation of this application.

Claims

1. A thermal management system, characterized by, include: A battery pack includes a housing and battery cells, the housing including a receiving cavity, and the battery cells disposed within the receiving cavity; A motor cooling circuit is provided, which is connected to the receiving cavity so that the temperature regulating medium in the motor cooling circuit enters the receiving cavity and heats the battery cell.

2. The thermal management system of claim 1, wherein, The thermal management system further includes a battery thermal management circuit, which is connected to the housing cavity so that the temperature regulating medium in the battery thermal management circuit enters the housing cavity and cools or heats the battery cell.

3. The thermal management system of claim 2, wherein, The thermal management system includes a first control valve. The motor cooling circuit and the battery thermal management circuit are respectively connected to the first control valve. The first control valve is used to control the on / off state of the motor cooling circuit and the thermal management circuit. When the first control valve connects the motor cooling circuit and the thermal management circuit, the motor cooling circuit is connected to the receiving cavity through the thermal management circuit.

4. The thermal management system of claim 3, wherein, The first control valve includes a first valve port and a second valve port connected to the thermal management circuit, and a third valve port and a fourth valve port connected to the motor cooling circuit. The first control valve is used to connect the first valve port and the third valve port, and the second valve port and the fourth valve port, so as to connect the motor cooling circuit and the thermal management circuit. The first control valve is also used to control the connection between the first valve port and the second valve port, and the connection between the third valve port and the fourth valve port, so as to disconnect the motor cooling circuit and the thermal management circuit.

5. The thermal management system of claim 4, wherein, The thermal management circuit includes a first pump, the input end of which is connected to the first valve port; the motor cooling circuit includes a second pump, the output end of which is connected to the third valve port.

6. The thermal management system of claim 5, wherein, The output end of the first pump is connected to the inlet of the receiving cavity, and the second valve port is connected to the outlet of the receiving cavity.

7. The thermal management system as described in claim 5, characterized in that, The motor cooling circuit includes a motor and a cooler connected in series. The output end of the motor is connected to the input end of the second pump, and the input end of the cooler is connected to the fourth valve port.

8. The thermal management system according to any one of claims 1 to 7, characterized in that, The motor cooling circuit includes a cooler, a branch pipe, and a second control valve. The branch pipe is connected in parallel with the cooler, and the cooler and the branch pipe are respectively connected to the second control valve. The second control valve is used to control the on / off state of the branch pipe and the cooler.

9. The thermal management system as described in claim 8, characterized in that, The thermal management system further includes a battery thermal management circuit, which is connected to the housing cavity; the thermal management system further includes a refrigeration circuit, which includes a compressor, a condenser and a refrigerator arranged in series, and the refrigerator is connected to the battery thermal management circuit to cool the temperature regulating medium in the battery thermal management circuit.

10. A vehicle, characterized in that, Includes the thermal management system as described in any one of claims 1 to 9.

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