Vehicle thermal management system and method

Abstract

The invention relates to a vehicle thermal management system and method.The vehicle thermal management system comprises a vehicle end thermal management system (1), a ground thermal management system (2), a first connecting assembly (3) and a control system, the vehicle end thermal management system (1) is arranged on a vehicle, and the ground thermal management system (2) is fixedly arranged relative to the ground; the first connecting assembly (3) is connected with the ground heat management system (2) and a to-be-cooled component (4) on a vehicle, the control system is in signal connection with the vehicle end heat management system (1), the ground heat management system (2) and the first connecting assembly (3), and the control system is configured to control opening and closing of the vehicle end heat management system (1) and the ground heat management system (2) and on and off of the first connecting assembly (3). The vehicle end thermal management system (1) and the ground thermal management system (2) are used for cooling the to-be-cooled component (4) through at least one of the vehicle end thermal management system (1) and the ground thermal management system (2).

Description

TECHNICAL FIELD

[0001] The present disclosure relates to the technical field of thermal management, and in particular to a vehicle thermal management system and method. BACKGROUND

[0002] With the rapid development of electrification of engineering machinery, the thermal management problem in the charging process is increasingly prominent. In a high-temperature environment (such as 55℃), the power battery and the charging system will generate a large amount of heat, and if the cooling is insufficient, it may cause the battery to overheat, performance degradation, shortened life, and even safety hazards.

[0003] In the related art, the cooling system is usually integrated on the vehicle, and relies on the vehicle-end radiator, fan and refrigeration circuit to cool the power battery. However, in an extreme environment such as 55℃ high temperature, the cooling efficiency of the cooling system integrated on the vehicle is limited, and it is difficult to quickly dissipate heat, which will cause the battery temperature to be too high, affecting the charging efficiency and safety. If you want to improve the cooling capacity, it will increase the weight and energy consumption of the vehicle.

[0004] In addition, the charging process of the vehicle is often carried out in a factory building or enclosed area, and the noise generated by the cooling fan and compressor in the cooling system when working will spread in the factory building, which will interfere with the operators and worsen the working environment.

[0005] It should be noted that the information disclosed in the background section of the present disclosure is only intended to increase the understanding of the overall background of the present disclosure, and should not be regarded as acknowledging or implying in any form that the information constitutes prior art known to those skilled in the art. The above statements are only used to provide background technical information related to the present application, and do not necessarily constitute prior art. SUMMARY

[0006] The embodiments of the present disclosure provide a vehicle thermal management system and method, which can effectively improve the efficiency of thermal management.

[0007] According to one aspect of the present disclosure, a vehicle thermal management system is provided, comprising:

[0008] a vehicle-end thermal management system, arranged on the vehicle;

[0009] a ground thermal management system, fixedly arranged relative to the ground;

[0010] a first connecting assembly, connecting the ground thermal management system and the to-be-cooled component on the vehicle; and

[0011] a control system, in signal connection with the vehicle-end thermal management system, the ground thermal management system and the first connecting assembly, the control system being configured to control the opening and closing of the vehicle-end thermal management system and the ground thermal management system and the on-off of the first connecting assembly, so as to cool the to-be-cooled component by using at least one of the vehicle-end thermal management system and the ground thermal management system.

[0012] In some embodiments, the vehicle thermal management system further comprises a soundproof cabin, and the ground thermal management system is arranged in the soundproof cabin.

[0013] In some embodiments, the first connecting assembly is connected with the vehicle-end thermal management system.

[0014] In some embodiments, the vehicle thermal management system further comprises a second connecting assembly, and the second connecting assembly is configured to connect the first connecting assembly and the charging pile, so that at least one of the vehicle-end thermal management system and the ground thermal management system can cool the charging pile.

[0015] In some embodiments, the ground thermal management system comprises at least two groups of cooling assemblies, and the at least two groups of cooling assemblies are connected in parallel.

[0016] In some embodiments, the ground thermal management system comprises a first cooling assembly and a second cooling assembly, the first connecting assembly comprises a first connecting valve and a second connecting valve, a liquid outlet pipeline of the first cooling assembly and a liquid outlet pipeline of the second cooling assembly are connected in parallel at a first connecting point, the first connecting valve connects the first connecting point and the component to be cooled, a liquid inlet pipeline of the first cooling assembly and a liquid inlet pipeline of the second cooling assembly are connected in parallel at a second connecting point, and the second connecting valve connects the second connecting point and the component to be cooled.

[0017] In some embodiments, the first connecting assembly further comprises a third connecting valve and a fourth connecting valve, the third connecting valve connects the first cooling assembly and the first connecting point, and the fourth connecting valve connects the second cooling assembly and the first connecting point.

[0018] In some embodiments, the vehicle thermal management system further comprises a second connecting assembly, the second connecting assembly is configured to connect the first connecting assembly and the charging pile, the second connecting assembly comprises a fifth connecting valve, a sixth connecting valve, a seventh connecting valve and an eighth connecting valve, the fifth connecting valve connects the first connecting valve and the component to be cooled, the sixth connecting valve connects the first connecting valve and a liquid inlet pipeline of the charging pile, the seventh connecting valve connects the second connecting valve and the component to be cooled, and the eighth connecting valve connects the second connecting valve and a liquid outlet pipeline of the charging pile.

[0019] In some embodiments, the ground thermal management system comprises a first cooling assembly and a second cooling assembly connected in parallel, the first cooling assembly comprises a first liquid storage tank, a first liquid pump, a first control valve and a first refrigeration system, the first liquid storage tank, the first liquid pump, the first control valve, the first connecting assembly and the component to be cooled form a first circulation loop, and the first refrigeration system is configured to reduce the temperature of a circulating medium flowing in the first circulation loop.

[0020] In some embodiments, the first refrigeration system comprises a first compressor, a first condenser assembly, a first throttling valve, a first evaporator and a second evaporator, the first condenser assembly is connected between an exhaust port of the first compressor and an inlet of the first throttling valve, the first evaporator and the second evaporator are connected in parallel between an outlet of the first throttling valve and an air inlet of the first compressor, and the first evaporator and the second evaporator are connected in parallel between the first liquid pump and the first connecting assembly.

[0021] In some embodiments, the first cooling assembly further comprises a first heat dissipation assembly, the first condenser assembly comprises a first condenser and a second condenser, the first condenser and the second condenser are connected in parallel between the exhaust port of the first compressor and the inlet of the first throttling valve, and the first condenser and the second condenser are connected in parallel in the first heat dissipation assembly, the first heat dissipation assembly is configured to dissipate heat from the first condenser and the second condenser.

[0022] In some embodiments, the vehicle-side thermal management system further comprises a second heat dissipation assembly, the second heat dissipation assembly is configured to dissipate heat from a heat generating component in the second refrigeration system.

[0023] In some embodiments, the vehicle-side thermal management system further comprises a second heat dissipation assembly, the second heat dissipation assembly is configured to dissipate heat from a heat generating component in the second refrigeration system.

[0024] According to another aspect of the present disclosure, there is provided a ground-side thermal management system of a vehicle thermal management system as described above.

[0025] According to yet another aspect of the present disclosure, there is provided a vehicle thermal management method based on the vehicle thermal management system as described above, the vehicle thermal management method comprising:

[0026] controlling the opening and closing of the vehicle-side thermal management system and the ground-side thermal management system and the on-off of the first connecting assembly to cool the components to be cooled on the vehicle by using at least one of the vehicle-side thermal management system and the ground-side thermal management system.

[0027] In some embodiments, the vehicle thermal management method comprises:

[0028] when the vehicle controller on the vehicle monitors that the vehicle speed is greater than a preset speed for a first preset time period, and the charging connector of the power battery on the vehicle is in a completely disconnected state, starting the vehicle-side thermal management system, closing the ground-side thermal management system, and disconnecting the first connecting assembly, so that the vehicle thermal management system enters a vehicle-side management mode;

[0029] When the vehicle controller detects that the vehicle speed remains at zero for a second preset period of time and the charging connector is in a connected state, it shuts down the vehicle thermal management system, causing the vehicle thermal management system to exit the vehicle management mode.

[0030] In some embodiments, the vehicle-side thermal management system includes a second liquid reservoir, a second liquid pump, a second refrigeration system, a second control valve, and a second heat dissipation assembly. The second liquid reservoir, the second liquid pump, the component to be cooled, and the second control valve are connected to form a second circulation loop. The second refrigeration system includes a second compressor, a third condenser, a second expansion valve, and a third evaporator. The circulating medium flowing in the second circulation loop flows through the third evaporator, and the second heat dissipation assembly is configured to dissipate heat from the third condenser.

[0031] The steps to start the vehicle-side thermal management system include:

[0032] First, adjust the second control valve to the open position;

[0033] Then start the second liquid pump, which operates in a fixed frequency mode;

[0034] Next, the rotational speed of the rotating component in the second heat dissipation assembly is adjusted to the initial value, and the second throttle valve is adjusted to the initial opening.

[0035] Finally, the second compressor is started, and after the second compressor is started, the rotation speed of the rotating parts in the second heat dissipation assembly is adjusted according to the temperature of the third condenser, the opening of the second throttle valve is adjusted according to the superheat of the second refrigeration system, and the rotation speed of the second compressor is adjusted according to the inlet temperature of the power battery and the exhaust pressure of the second compressor.

[0036] In some embodiments, the vehicle thermal management method includes:

[0037] When the vehicle's onboard controller detects that the vehicle speed remains at zero for a second preset duration, the charging connector of the vehicle's power battery is connected, and the vehicle has a cooling requirement, the vehicle-side thermal management system is shut down, the ground thermal management system is activated, the first connection component is connected, and the vehicle thermal management system enters ground management mode.

[0038] When the on-board controller sends a signal that charging is complete, or when the charging connector enters a disconnected state, the ground thermal management system is shut down, the first connection component is disconnected, and the vehicle thermal management system exits the ground management mode.

[0039] In some embodiments, the ground thermal management system includes a first cooling component and a second cooling component connected in parallel. The first cooling component includes a first liquid storage tank, a first liquid pump, a first control valve, a first refrigeration system, and a first heat dissipation component. The first liquid storage tank, the first liquid pump, the first control valve, a first connecting component, and the component to be cooled are connected to form a first circulation loop. The first refrigeration system includes a first compressor, a first condenser, a second condenser, a first throttle valve, a first evaporator, and a second evaporator. The first condenser and the second condenser are connected in parallel between the exhaust port of the first compressor and the inlet of the first throttle valve. The first evaporator and the second evaporator are connected in parallel between the outlet of the first throttle valve and the inlet of the first compressor. The first condenser and the second condenser are connected in parallel to the first heat dissipation component. The first evaporator and the second evaporator are connected in parallel between the first liquid pump and the first connecting component.

[0040] The steps to start the ground thermal management system include:

[0041] First connect the first connection component;

[0042] Restart the first liquid pump, which will operate in a fixed-frequency mode;

[0043] Next, the rotational speed of the rotating component in the first heat dissipation assembly is adjusted to the initial value, and the first throttle valve is adjusted to the initial opening.

[0044] Finally, the first compressor is started, and after the first compressor is started, the rotation speed of the rotating part in the first heat dissipation assembly is adjusted according to the temperature of the first condenser and the second condenser, the opening of the first throttle valve is adjusted according to the superheat of the first refrigeration system, and the rotation speed of the first compressor is adjusted according to the inlet temperature of the power battery and the exhaust port pressure of the first compressor.

[0045] When the liquid temperature of the power battery continues to rise within a third preset time period and the average temperature rise rate exceeds the first preset rate, the second cooling component is activated.

[0046] In some embodiments, the vehicle thermal management method includes:

[0047] When the vehicle thermal management system is in ground management mode, the temperature of the component to be cooled is detected. When the temperature of the component to be cooled cannot be maintained at 1°C lower than the maximum limit temperature within the fourth preset time, the vehicle thermal management system is activated, so that the vehicle thermal management system enters the vehicle-side and ground collaborative management mode.

[0048] When the on-board controller sends a signal that charging is finished, or the charging connector enters a disconnected state, the ground thermal management system and the vehicle thermal management system are shut down, the first connection component is disconnected, and the vehicle thermal management system exits the vehicle-to-ground collaborative management mode.

[0049] In some embodiments, the vehicle thermal management system further includes a second connection component for connecting the first connection component and the charging pile, and the vehicle thermal management method includes:

[0050] When the ground thermal management system is activated, the temperature of the charging pile that is charging the power battery on the vehicle is detected. When the temperature of the charging pile is greater than or equal to the first preset temperature, or the charging pile has a cooling requirement, or the charging process is expected to last longer than the fifth preset duration, the second connection component is connected to cool the charging pile using the ground thermal management system.

[0051] In some embodiments, the vehicle thermal management system further includes a second connection component for connecting the first connection component and the charging pile, and the vehicle thermal management method includes:

[0052] When any of the conditions I to V occur, the vehicle-side thermal management system and the ground thermal management system are activated, the first connecting component is connected or the first connecting component and the second connecting component are connected simultaneously, and the cooling capacity of the vehicle-side thermal management system and the ground thermal management system is adjusted to the maximum, so that the vehicle thermal management system enters the emergency management mode.

[0053] I. The ambient temperature of the vehicle is greater than or equal to the second preset temperature;

[0054] II. The temperature of the vehicle's power battery is greater than or equal to the third preset temperature;

[0055] III. The rate of temperature rise of the power battery is greater than or equal to the second preset rate;

[0056] IV. The temperature of the charging pile for charging the power battery is greater than or equal to the fourth preset temperature;

[0057] V. The vehicle-side thermal management system detected a risk of thermal runaway;

[0058] When the ambient temperature of the vehicle is lower than the second preset temperature, the temperature of the power battery is lower than the third preset temperature, the temperature rise rate of the power battery is lower than the second preset rate, the temperature of the charging pile is lower than the fourth preset temperature, and the risk of thermal runaway is eliminated, the vehicle-side thermal management system and the ground thermal management system are shut down, or the cooling capacity of the vehicle-side thermal management system and the ground thermal management system is reduced, so that the vehicle thermal management system exits the emergency management mode.

[0059] Based on the above technical solution, this disclosure can effectively improve the cooling efficiency of the components to be cooled by setting up a ground thermal management system. Moreover, the ground thermal management system is set at a fixed position relative to the ground, at least not on the vehicle, so the weight and energy consumption of the vehicle will not be increased in order to improve the cooling efficiency. Attached Figure Description

[0060] The accompanying drawings, which are included to provide a further understanding of this disclosure and form part of this application, illustrate exemplary embodiments of this disclosure and are used to explain this disclosure, but do not constitute an undue limitation of this disclosure. In the drawings:

[0061] Figure 1 The diagram shows the structure of some embodiments of the vehicle thermal management system provided in this disclosure.

[0062] In the picture:

[0063] 1. Vehicle-side thermal management system; 11. Second liquid reservoir; 12. Second liquid pump; 13. Second control valve; 14. Second refrigeration system; 141. Second compressor; 142. Third condenser; 143. Second throttle valve; 144. Third evaporator; 15. Second heat dissipation assembly; 151. Fourth liquid reservoir; 152. Fourth liquid pump; 153. Second radiator; 154. Second fan;

[0064] 2. Ground thermal management system;

[0065] 2a. First cooling assembly; 21. First liquid receiver; 22. First liquid pump; 23. First control valve; 24. First refrigeration system; 241. First compressor; 242. First condenser; 243. Second condenser; 244. First throttle valve; 245. First evaporator; 246. Second evaporator; 25. First heat dissipation assembly; 251. Third liquid receiver; 252. Third liquid pump; 253. First radiator; 254. First fan;

[0066] 2b. Second cooling assembly; 26. Fifth liquid receiver; 27. Fifth liquid pump; 28. Third control valve; 29. ​​Third refrigeration system; 291. Third compressor; 292. Fourth condenser; 293. Fifth condenser; 294. Third throttle valve; 295. Fourth evaporator; 296. Fifth evaporator; 290. Third heat dissipation assembly; 2901. Sixth liquid receiver; 2902. Sixth liquid pump; 2903. Third radiator; 2904. Third fan;

[0067] 3. First connecting assembly; 31. First connecting valve; 32. Second connecting valve; 33. Third connecting valve; 34. Fourth connecting valve;

[0068] 4. Components to be cooled; 41. Power battery; 42. DC-DC converter;

[0069] 5. Second connecting assembly; 51. Fifth connecting valve; 52. Sixth connecting valve; 53. Seventh connecting valve; 54. Eighth connecting valve;

[0070] 6. Charging stations;

[0071] 71. First temperature sensor; 72. Second temperature sensor; 73. Third temperature sensor. Detailed Implementation

[0072] The technical solutions in the embodiments of this disclosure will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are merely some embodiments of this disclosure, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of this disclosure without creative effort are within the scope of protection of this disclosure.

[0073] In the description of this disclosure, it should be understood that the terms "center," "lateral," "longitudinal," "front," "rear," "left," "right," "upper," "lower," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this disclosure and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the scope of protection of this disclosure.

[0074] like Figure 1 As shown, in some embodiments of the vehicle thermal management system provided in this disclosure, the vehicle thermal management system includes a vehicle-side thermal management system 1, a ground-side thermal management system 2, a first connecting component 3, and a control system. The vehicle-side thermal management system 1 is disposed on the vehicle, the ground-side thermal management system 2 is fixedly disposed relative to the ground, the first connecting component 3 connects the ground-side thermal management system 2 and the component 4 to be cooled on the vehicle, and the control system is signal-connected to the vehicle-side thermal management system 1, the ground-side thermal management system 2, and the first connecting component 3. The control system is configured to control the opening and closing of the vehicle-side thermal management system 1 and the ground-side thermal management system 2, as well as the on / off state of the first connecting component 3, so as to utilize at least one of the vehicle-side thermal management system 1 and the ground-side thermal management system 2 to cool the component 4 to be cooled.

[0075] The control system can control the opening and closing of the vehicle-side thermal management system 1, the opening and closing of the ground thermal management system 2, and the on / off state of the first connecting component 3.

[0076] When the first connecting component 3 is disconnected, the ground thermal management system 2 is disconnected from the component 4 to be cooled on the vehicle. At this time, the vehicle-side thermal management system 1 can be used to cool the component 4.

[0077] When the first connecting component 3 is connected, the ground thermal management system 2 is connected to the component 4 to be cooled on the vehicle. At this time, the ground thermal management system 2 can be used alone to cool the component 4, or the ground thermal management system 2 and the vehicle thermal management system 1 can be used together to cool the component 4.

[0078] In the above embodiments, the vehicle thermal management system includes a vehicle-side thermal management system 1 installed on the vehicle and a ground-side thermal management system 2 fixed relative to the ground. These two thermal management systems can operate independently or collaboratively, providing various cooling solutions and expanding the range of options. When the vehicle-side thermal management system 1 malfunctions, the ground-side thermal management system 2 can be used to cool the component 4 to be cooled, preventing the component 4 from overheating and causing safety issues. When the cooling capacity of the vehicle-side thermal management system 1 is insufficient, the ground-side thermal management system 2 can be used to enhance the overall cooling capacity of the thermal management system, effectively reducing the temperature of the component 4 to be cooled.

[0079] By setting up a ground-based thermal management system 2, an additional thermal management system can be added to the vehicle-side thermal management system 1 to improve the cooling efficiency of the components to be cooled 4. Moreover, the ground-based thermal management system 2 is set at a fixed position relative to the ground, at least not on the vehicle, so the vehicle's weight and energy consumption will not be increased in order to improve cooling efficiency.

[0080] Moreover, since the ground thermal management system 2 is not installed on the vehicle, its location is more flexible. For example, it can be installed in a location far away from the vehicle charging station, thus avoiding noise pollution to operators caused by the closed charging station and improving the working environment of the charging station.

[0081] In some embodiments, the ground thermal management system 2 is disposed on the ground or mounted on a mounting bracket disposed on the ground.

[0082] In some embodiments, the vehicle thermal management system further includes a soundproof cabin, and the ground thermal management system 2 is disposed inside the soundproof cabin.

[0083] By setting up a soundproof chamber, the noise generated by the ground thermal management system 2 during operation can be further reduced, and the comfort of the surrounding environment of the ground thermal management system 2 can be improved.

[0084] In this embodiment, the component 4 to be cooled can be any component on the vehicle that requires cooling, such as the power battery 41, the DC-DC converter 42, the motor, and the controller. There can be multiple power batteries 41, which can be connected in parallel. The power batteries 41 and the DC-DC converter 42 can also be connected in parallel.

[0085] In this embodiment of the disclosure, the first connection component 3 may or may not be connected to the vehicle-side thermal management system 1.

[0086] In the embodiment where the first connecting component 3 is connected to the vehicle-side thermal management system 1, since the vehicle-side thermal management system 1 is connected to the component to be cooled 4, the ground thermal management system 2 is connected to the vehicle-side thermal management system 1 through the first connecting component 3, and the ground thermal management system 2 is indirectly connected to the component to be cooled 4.

[0087] The advantage of connecting the first connecting component 3 to the vehicle-side thermal management system 1 is that the first connecting component 3 can be directly connected to the connecting pipe between the vehicle-side thermal management system 1 and the component to be cooled 4 using the connecting pipe between the vehicle-side thermal management system 1 and the component to be cooled 4. There is no need to set up a special port for connecting the first connecting component 3 on the component to be cooled 4, which can reduce the structural modification of the component to be cooled 4.

[0088] In embodiments where the first connecting component 3 is not connected to the vehicle-side thermal management system 1, the ground thermal management system 2 is directly connected to the component 4 to be cooled via the first connecting component 3.

[0089] In some embodiments, the vehicle thermal management system further includes a second connection component 5 for connecting the first connection component 3 and the charging pile 6, so that at least one of the vehicle-side thermal management system 1 and the ground thermal management system 2 can cool the charging pile 6.

[0090] By setting the second connection component 5, the first connection component 3 and the charging pile 6 can be connected. When the first connection component 3 is also connected to the vehicle-side thermal management system 1, at least one of the vehicle-side thermal management system 1 and the ground thermal management system 2 can be used to cool the charging pile 6, so as to avoid the charging pile 6 from overheating and affecting the safety of charging. Multiple cooling solutions for the charging pile 6 can also be implemented.

[0091] In some embodiments, the ground thermal management system 2 includes at least two sets of cooling components, and the at least two sets of cooling components are connected in parallel.

[0092] By setting at least two sets of cooling components, the cooling capacity of the ground thermal management system 2 can be improved; moreover, the number of cooling components participating in the cooling can be adjusted according to the temperature and cooling requirements of the component to be cooled 4, so as to achieve rational use of energy.

[0093] In addition, by setting at least two sets of cooling components, the pressure to improve cooling capacity can be transferred to the ground thermal management system 2 without changing the structure of the vehicle-side thermal management system 1, thus not increasing the vehicle's weight and energy consumption.

[0094] The number of cooling components can be two, three, four, or more. Multiple cooling components can have the same or different structures.

[0095] Separating the ground thermal management system 2 from the vehicle also allows for greater flexibility in the number of cooling components, freeing it from the constraints of limited space on the vehicle and eliminating concerns about vehicle overweight.

[0096] In some embodiments, the ground thermal management system 2 includes a first cooling component 2a and a second cooling component 2b, and a first connecting component 3 includes a first connecting valve 31 and a second connecting valve 32. The liquid outlet pipe of the first cooling component 2a and the liquid outlet pipe of the second cooling component 2b are connected in parallel at a first connection point a. The first connecting valve 31 connects the first connection point a and the component 4 to be cooled. The liquid inlet pipe of the first cooling component 2a and the liquid inlet pipe of the second cooling component 2b are connected in parallel at a second connection point b. The second connecting valve 32 connects the second connection point b and the component 4 to be cooled.

[0097] By setting the first connecting valve 31 and the second connecting valve 32, the opening and closing of the liquid outlet pipes of the first cooling component 2a and the second cooling component 2b and the flow rate regulation can be realized, as can the opening and closing of the liquid inlet pipes of the first cooling component 2a and the second cooling component 2b and the flow rate regulation.

[0098] After the first connecting valve 31 is opened, the coolant cooled by the first cooling component 2a flows into the component to be cooled 4 through the outlet pipe to cool the component 4.

[0099] After the second connecting valve 32 is opened, the coolant that has cooled the component 4 to be cooled returns to the first cooling component 2a through the inlet pipe, and is cooled again through the first cooling component 2a, so as to realize the circulation of coolant.

[0100] In some embodiments, the first connecting component 3 further includes a third connecting valve 33 and a fourth connecting valve 34, wherein the third connecting valve 33 connects the first cooling component 2a and the first connection point a, and the fourth connecting valve 34 connects the second cooling component 2b and the first connection point a.

[0101] By setting the third connecting valve 33 and the fourth connecting valve 34, the opening and closing or the flow rate of the first cooling component 2a and the second cooling component 2b can be adjusted by regulating the opening and closing or the flow rate of the third connecting valve 33 and the fourth connecting valve 34.

[0102] In some embodiments, the vehicle thermal management system further includes a second connection component 5 for connecting the first connection component 3 and the charging pile 6. The second connection component 5 includes a fifth connection valve 51, a sixth connection valve 52, a seventh connection valve 53, and an eighth connection valve 54. The fifth connection valve 51 connects the first connection valve 31 and the component to be cooled 4. The sixth connection valve 52 connects the first connection valve 31 and the inlet pipe of the charging pile 6. The seventh connection valve 53 connects the second connection valve 32 and the component to be cooled 4. The eighth connection valve 54 connects the second connection valve 32 and the outlet pipe of the charging pile 6.

[0103] By setting the fifth connecting valve 51, the connection between the first connecting valve 31 and the component 4 to be cooled can be controlled. When the fifth connecting valve 51 is open, the first connecting valve 31 is connected to the component 4 to be cooled, and the coolant flowing through the first connecting valve 31 can enter the component 4 to be cooled through the fifth connecting valve 51 to cool it. When the fifth connecting valve 51 is closed, the first connecting valve 31 is not connected to the component 4 to be cooled, the coolant flowing through the first connecting valve 31 will not enter the component 4 to be cooled, and the cooling assembly stops cooling the component 4 to be cooled.

[0104] By setting a sixth connecting valve 52, the connection between the first connecting valve 31 and the liquid inlet pipe of the charging pile 6 can be controlled. When the sixth connecting valve 52 is open, the first connecting valve 31 is connected to the liquid inlet pipe of the charging pile 6, and the coolant flowing through the first connecting valve 31 can enter the liquid inlet pipe of the charging pile 6 through the sixth connecting valve 52 to cool the charging pile 6. When the sixth connecting valve 52 is closed, the first connecting valve 31 is not connected to the liquid inlet pipe of the charging pile 6, the coolant flowing through the first connecting valve 31 will not enter the liquid inlet pipe of the charging pile 6, and the cooling component stops cooling the charging pile 6.

[0105] By setting the seventh connecting valve 53, the connection between the second connecting valve 32 and the component 4 to be cooled can be controlled. When the seventh connecting valve 53 is open, the second connecting valve 32 is connected to the component 4 to be cooled, and the coolant after cooling the component 4 can flow back to the cooling assembly through the seventh connecting valve 53 and the second connecting valve 32. When the seventh connecting valve 53 is closed, the second connecting valve 32 is not connected to the component 4 to be cooled, and the coolant after cooling the component 4 will not flow back to the cooling assembly. At this time, the cooling assembly may also stop cooling the component 4.

[0106] By setting the eighth connecting valve 54, the connection between the second connecting valve 32 and the outlet pipe of the charging pile 6 can be controlled. When the eighth connecting valve 54 is open, the second connecting valve 32 is connected to the outlet pipe of the charging pile 6, and the coolant after cooling the charging pile 6 can flow back to the cooling assembly through the eighth connecting valve 54 and the second connecting valve 32. When the eighth connecting valve 54 is closed, the second connecting valve 32 is not connected to the outlet pipe of the charging pile 6, and the coolant after cooling the charging pile 6 will not flow back to the cooling assembly. At this time, the cooling of the charging pile 6 by the cooling assembly may also stop.

[0107] In some embodiments, the ground thermal management system 2 includes a first cooling component 2a and a second cooling component 2b connected in parallel. The first cooling component 2a includes a first liquid storage tank 21, a first liquid pump 22, a first control valve 23 and a first refrigeration system 24. The first liquid storage tank 21, the first liquid pump 22, the first control valve 23, the first connecting component 3 and the component to be cooled 4 are connected to form a first circulation loop. The first refrigeration system 24 is configured to reduce the temperature of the circulating medium flowing in the first circulation loop.

[0108] The first cooling component 2a uses the circulating medium cooled by the first refrigeration system 24 to cool the component 4 to be cooled. Compared with air cooling, this can effectively avoid problems such as fin clogging that affect cooling efficiency.

[0109] The circulating medium can be water or other flowable coolant.

[0110] In some embodiments, the first refrigeration system 24 includes a first compressor 241, a first condenser assembly, a first throttle valve 244, a first evaporator 245, and a second evaporator 246. The first condenser assembly is connected between the exhaust port of the first compressor 241 and the inlet of the first throttle valve 244. The first evaporator 245 and the second evaporator 246 are connected in parallel between the outlet of the first throttle valve 244 and the inlet of the first compressor 241. The first evaporator 245 and the second evaporator 246 are also connected in parallel between the first liquid pump 22 and the first connecting assembly 3.

[0111] The first refrigeration system 24 employs a refrigeration method similar to that of an air conditioner, which can effectively improve cooling efficiency. The medium circulating in the first refrigeration system 24 is refrigerant. The first refrigeration system 24 is equipped with two evaporators connected in parallel, which can effectively increase the cooling capacity and thus improve refrigeration efficiency.

[0112] Switch valves can be installed between the first evaporator 245 and the first throttle valve 244, and between the second evaporator 246 and the first throttle valve 244, respectively, to control the on / off state of the refrigeration pipelines containing the first evaporator 245 and the second evaporator 246, so that the on / off state of the first evaporator 245 and the second evaporator 246 is selectable to meet different cooling needs of users.

[0113] The first evaporator 245 and the second evaporator 246 are connected in parallel between the first liquid pump 22 and the first connecting assembly 3. Therefore, the first evaporator 245 and the second evaporator 246 can share the first liquid storage tank 21, the first liquid pump 22 and the first control valve 23, thereby effectively reducing the total number of parts, reducing costs and simplifying the system structure.

[0114] In some embodiments, the first cooling component 2a further includes a first heat dissipation component 25, and the first condenser component includes a first condenser 242 and a second condenser 243. The first condenser 242 and the second condenser 243 are connected in parallel between the exhaust port of the first compressor 241 and the inlet of the first throttle valve 244, and the first condenser 242 and the second condenser 243 are connected in parallel in the first heat dissipation component 25. The first heat dissipation component 25 is configured to dissipate heat from the first condenser 242 and the second condenser 243.

[0115] By setting the first condenser 242 and the second condenser 243 to be connected in parallel, they can be matched with the first evaporator 245 and the second evaporator 246 to be set in parallel, effectively improving the refrigeration efficiency.

[0116] Switch valves can be installed between the first compressor 241 and the first condenser 242, and between the first compressor 241 and the second condenser 243, respectively, to control the opening and closing of the refrigeration pipelines containing the first condenser 242 and the second condenser 243, so that the opening and closing states of the first condenser 242 and the second condenser 243 are selectable to meet different cooling needs of users.

[0117] By setting the first heat dissipation component 25, the heat released by the first condenser 242 and the second condenser 243 can be dissipated in a timely manner, avoiding heat accumulation and reducing the cooling efficiency of the first refrigeration system 24.

[0118] The first heat dissipation component 25 can simultaneously dissipate heat from the first condenser 242 and the second condenser 243. The first condenser 242 and the second condenser 243 utilize the same first heat dissipation component 25, which effectively reduces the number of heat dissipation components, lowers costs, and simplifies the system structure.

[0119] There are several possible structures for the first heat dissipation component 25.

[0120] In some embodiments, the first heat dissipation component 25 includes a third liquid storage tank 251, a third liquid pump 252, a first radiator 253, and a first fan 254. The circulating medium flowing out of the third liquid pump 252 absorbs heat as it flows through the first condenser 242 and the second condenser 243, and then dissipates the absorbed heat through the first fan 254 as it flows through the first radiator 253.

[0121] The number of the first fan 254 can be flexibly set as needed.

[0122] The structure of the second cooling component 2b can be the same as that of the first cooling component 2a, or it can be different from that of the first cooling component 2a.

[0123] In some embodiments, the ground thermal management system 2 includes a second cooling component 2b connected in parallel. The second cooling component 2b includes a fifth liquid storage tank 26, a fifth liquid pump 27, a third control valve 28, and a third refrigeration system 29. The fifth liquid storage tank 26, the fifth liquid pump 27, the third control valve 28, the first connecting component 3, and the component to be cooled 4 are connected to form a first circulation loop. The third refrigeration system 29 is configured to reduce the temperature of the circulating medium flowing in the first circulation loop.

[0124] The second cooling component 2b uses the circulating medium cooled by the third refrigeration system 29 to cool the component 4 to be cooled. Compared with air cooling, this can effectively avoid problems such as fin clogging that affect cooling efficiency.

[0125] The circulating medium can be water or other flowable coolant.

[0126] In some embodiments, the third refrigeration system 29 includes a third compressor 291, a second condenser assembly, a third throttle valve 294, a fourth evaporator 295, and a fifth evaporator 296. The second condenser assembly is connected between the exhaust port of the third compressor 291 and the inlet of the third throttle valve 294. The fourth evaporator 295 and the fifth evaporator 296 are connected in parallel between the outlet of the third throttle valve 294 and the inlet of the third compressor 291. The fourth evaporator 295 and the fifth evaporator 296 are also connected in parallel between the fifth liquid pump 27 and the first connecting assembly 3.

[0127] The third refrigeration system 29 employs a refrigeration method similar to that of an air conditioner, which can effectively improve cooling efficiency. The medium circulating in the third refrigeration system 29 is refrigerant. The third refrigeration system 29 has two parallel evaporators, which can effectively increase the cooling capacity and thus improve refrigeration efficiency.

[0128] Switch valves can be installed between the fourth evaporator 295 and the third throttle valve 294, and between the fifth evaporator 296 and the third throttle valve 294, respectively, to control the on / off state of the refrigeration pipes containing the fourth evaporator 295 and the fifth evaporator 296, so that the on / off state of the fourth evaporator 295 and the fifth evaporator 296 is selectable to meet different cooling needs of users.

[0129] The fourth evaporator 295 and the fifth evaporator 296 are connected in parallel between the fifth liquid pump 27 and the first connecting assembly 3. Therefore, the fourth evaporator 295 and the fifth evaporator 296 can share the fifth liquid storage tank 26, the fifth liquid pump 27 and the third control valve 28, thereby effectively reducing the total number of parts, reducing costs and simplifying the system structure.

[0130] In some embodiments, the second cooling assembly 2b further includes a third heat dissipation assembly 290. The second condenser assembly includes a fourth condenser 292 and a fifth condenser 293, which are connected in parallel between the exhaust port of the third compressor 291 and the inlet of the third throttle valve 294. The fourth condenser 292 and the fifth condenser 293 are also connected in parallel in the third heat dissipation assembly 290, which is configured to dissipate heat from the fourth condenser 292 and the fifth condenser 293.

[0131] By setting the fourth condenser 292 and the fifth condenser 293 in parallel connection, they can be matched with the fourth evaporator 295 and the fifth evaporator 296 in parallel connection, effectively improving the refrigeration efficiency.

[0132] Switch valves can be installed between the third compressor 291 and the fourth condenser 292, and between the third compressor 291 and the fifth condenser 293, respectively, to control the opening and closing of the refrigeration pipes containing the fourth condenser 292 and the fifth condenser 293, so that the opening and closing states of the fourth condenser 292 and the fifth condenser 293 are selectable to meet different user refrigeration needs.

[0133] By setting up the third heat dissipation component 290, the heat released by the fourth condenser 292 and the fifth condenser 293 can be dissipated in a timely manner, avoiding heat accumulation and reducing the cooling efficiency of the third refrigeration system 29.

[0134] The third heat dissipation component 290 can simultaneously dissipate heat from the fourth condenser 292 and the fifth condenser 293. The fact that the fourth condenser 292 and the fifth condenser 293 utilize the same third heat dissipation component 290 effectively reduces the number of heat dissipation components, lowers costs, and simplifies the system structure.

[0135] There are several options for the specific structure of the third heat dissipation component 290.

[0136] In some embodiments, the third heat dissipation assembly 290 includes a sixth liquid storage tank 2901, a sixth liquid pump 2902, a third radiator 2903, and a third fan 2904. The circulating medium flowing out of the sixth liquid pump 2902 absorbs heat after passing through the fourth condenser 292 and the fifth condenser 293, and then dissipates the absorbed heat through the third fan 2904 when it flows through the third radiator 2903.

[0137] The number of third fans 2904 can be flexibly set as needed.

[0138] In some embodiments, the vehicle-side thermal management system 1 includes a second liquid storage tank 11, a second liquid pump 12, a second control valve 13, and a second refrigeration system 14. The second liquid storage tank 11, the second liquid pump 12, the component to be cooled 4, and the second control valve 13 are connected to form a second circulation loop. The second refrigeration system 14 is configured to reduce the temperature of the circulating medium flowing in the second circulation loop.

[0139] The vehicle-side thermal management system 1 uses the circulating medium cooled by the second refrigeration system 14 to cool the components 4 to be cooled. Compared with air cooling, this can effectively avoid problems such as fin clogging that affect cooling efficiency.

[0140] The circulating medium can be water or other flowable coolant.

[0141] In some embodiments, the second refrigeration system 14 includes a second compressor 141, a third condenser 142, a second expansion valve 143, and a third evaporator 144 connected in sequence. The medium flowing through the second refrigeration system 14 is refrigerant. The second refrigeration system 14 adopts a refrigeration method similar to that of an air conditioner, which can effectively improve cooling efficiency.

[0142] In some embodiments, the vehicle-side thermal management system 1 further includes a second heat dissipation component 15, which is configured to dissipate heat from heat-generating components in the second cooling system 14.

[0143] By setting up the second heat dissipation component 15, the heat released by the third condenser 142 can be dissipated in a timely manner, avoiding heat accumulation and reducing the cooling efficiency of the second refrigeration system 14.

[0144] In some embodiments, the second heat dissipation assembly 15 includes a fourth liquid storage tank 151, a fourth liquid pump 152, a second radiator 153, and a second fan 154. The circulating medium flowing out of the fourth liquid pump 152 absorbs heat after passing through the third condenser 142, and then dissipates the absorbed heat through the second fan 154 as it flows through the second radiator 153.

[0145] The number of second fans 154 can be flexibly set as needed.

[0146] In some embodiments, the vehicle thermal management system further includes a temperature sensor configured to detect the temperature at a preset location. The control system is connected to the temperature sensor to obtain the temperature value measured by the temperature sensor and controls the opening and closing of the vehicle-side thermal management system 1 and the ground thermal management system 2 based on the measured temperature.

[0147] This disclosure also provides a ground thermal management system 2 for a vehicle thermal management system as described above.

[0148] Based on the vehicle thermal management systems in the above embodiments, this disclosure also provides a vehicle thermal management method, which includes:

[0149] The vehicle-side thermal management system 1 and the ground-side thermal management system 2 are controlled to open and close, and the first connecting component 3 is switched on and off, so as to use at least one of the vehicle-side thermal management system 1 and the ground-side thermal management system 2 to cool the components 4 on the vehicle to be cooled.

[0150] In some embodiments, the vehicle thermal management method includes:

[0151] When the vehicle's onboard controller detects that the vehicle speed is continuously greater than the preset speed for a first preset time period, and the charging connector of the vehicle's power battery 41 is in a completely disconnected state, the vehicle-side thermal management system 1 is activated, the ground thermal management system 2 is shut down, the first connection component 3 is disconnected, and the vehicle thermal management system enters the vehicle-side management mode.

[0152] When the vehicle controller detects that the vehicle speed remains at zero for a second preset period of time and the charging connector is in a connected state, the vehicle thermal management system 1 is shut down, causing the vehicle thermal management system to exit the vehicle management mode.

[0153] The first preset duration, preset speed, and second preset duration can be flexibly set as needed.

[0154] In some embodiments, the first preset duration can be 25 to 35 seconds, such as 25 seconds, 26 seconds, 27 seconds, 28 seconds, 29 seconds, 30 seconds, 31 seconds, 32 seconds, 33 seconds, 34 seconds, and 35 seconds.

[0155] In some embodiments, the preset speed can be 3 to 8 km / h, such as 3 km / h, 4 km / h, 5 km / h, 6 km / h, 7 km / h and 8 km / h.

[0156] In some embodiments, the second preset duration can be 55~65s, such as 55s, 56s, 57s, 58s, 59s, 60s, 61s, 62s, 63s, 64s and 65s.

[0157] In some embodiments, the vehicle-side thermal management system 1 includes a second liquid reservoir 11, a second liquid pump 12, a second refrigeration system 14, a second control valve 13, and a second heat dissipation assembly 15. The second liquid reservoir 11, the second liquid pump 12, the component to be cooled 4, and the second control valve 13 are connected to form a second circulation loop. The second refrigeration system 14 includes a second compressor 141, a third condenser 142, a second throttle valve 143, and a third evaporator 144. The circulating medium flowing in the second circulation loop flows through the third evaporator 144. The second heat dissipation assembly 15 is configured to dissipate heat from the third condenser 142.

[0158] The operation of starting the vehicle-side thermal management system 1 includes:

[0159] First, adjust the second control valve 13 to the open position;

[0160] Then start the second liquid pump 12, which operates in a fixed frequency mode;

[0161] Next, the rotational speed of the rotating component in the second heat dissipation assembly 15 is adjusted to the initial value, and the second throttle valve 143 is adjusted to the initial opening.

[0162] Finally, the second compressor 141 is started, and after the second compressor 141 is started, the rotation speed of the rotating part in the second heat dissipation assembly 15 is adjusted according to the temperature of the third condenser 142, the opening of the second throttle valve 143 is adjusted according to the superheat of the second refrigeration system 14, and the rotation speed of the second compressor 141 is adjusted according to the liquid inlet temperature of the power battery 41 and the exhaust port pressure of the second compressor 141.

[0163] In some embodiments, the vehicle thermal management method includes:

[0164] When the vehicle's onboard controller detects that the vehicle speed remains at zero for a second preset duration, the charging connector of the vehicle's power battery 41 is connected, and the vehicle has a cooling requirement, the vehicle-side thermal management system 1 is shut down, the ground thermal management system 2 is activated, and the first connection component 3 is connected, so that the vehicle thermal management system enters the ground management mode.

[0165] When the vehicle controller sends a signal that charging is finished, or the charging connector enters a disconnected state, the ground thermal management system 2 is shut down, the first connection component 3 is disconnected, and the vehicle thermal management system exits the ground management mode.

[0166] In some embodiments, the ground thermal management system 2 includes a first cooling component 2a and a second cooling component 2b connected in parallel. The first cooling component 2a includes a first liquid storage tank 21, a first liquid pump 22, a first control valve 23, a first refrigeration system 24, and a first heat dissipation component 25. The first liquid storage tank 21, the first liquid pump 22, the first control valve 23, the first connecting component 3, and the component to be cooled 4 are connected to form a first circulation loop. The first refrigeration system 24 includes a first compressor 241, a first condenser 242, a second condenser 243, and a first throttling valve 244. The first evaporator 245 and the second evaporator 246, the first condenser 242 and the second condenser 243 are connected in parallel between the exhaust port of the first compressor 241 and the inlet of the first throttle valve 244. The first evaporator 245 and the second evaporator 246 are connected in parallel between the outlet of the first throttle valve 244 and the inlet of the first compressor 241. The first condenser 242 and the second condenser 243 are connected in parallel to the first heat dissipation assembly 25. The first evaporator 245 and the second evaporator 246 are connected in parallel between the first liquid pump 22 and the first connecting assembly 3.

[0167] The steps to start the ground thermal management system 2 include:

[0168] First connect the first connection component 3;

[0169] Restart the first liquid pump 22, which operates in a fixed frequency mode;

[0170] Next, the rotational speed of the rotating component in the first heat dissipation assembly 25 is adjusted to the initial value, and the first throttle valve 244 is adjusted to the initial opening.

[0171] Finally, the first compressor 241 is started, and after the first compressor 241 is started, the rotation speed of the rotating part in the first heat dissipation assembly 25 is adjusted according to the temperature of the first condenser 242 and the second condenser 243, the opening of the first throttle valve 244 is adjusted according to the superheat of the first refrigeration system 24, and the rotation speed of the first compressor 241 is adjusted according to the liquid inlet temperature of the power battery 41 and the exhaust port pressure of the first compressor 241.

[0172] When the liquid temperature of the power battery 41 continues to rise within a third preset time period and the average temperature rise rate exceeds the first preset rate, the second cooling component 2b is activated.

[0173] The third preset duration and the first preset rate can be flexibly set as needed.

[0174] In some embodiments, the third preset duration can be 3 to 7 minutes, such as 3 minutes, 4 minutes, 5 minutes, 6 minutes, and 7 minutes.

[0175] In some embodiments, the first preset rate can be 0.3~0.7℃ / min, such as 0.3℃ / min, 0.4℃ / min, 0.5℃ / min, 0.6℃ / min and 0.7℃ / min.

[0176] In some embodiments, the vehicle thermal management method includes:

[0177] When the vehicle thermal management system is in ground management mode, the temperature of the component 4 to be cooled is detected. When the temperature of the component 4 to be cooled cannot be maintained at 1°C lower than the maximum limit temperature within the fourth preset time, the vehicle thermal management system 1 is activated, so that the vehicle thermal management system enters the vehicle and ground collaborative management mode.

[0178] When the on-board controller sends a signal that charging is finished, or the charging connector enters a disconnected state, the ground thermal management system 2 and the vehicle thermal management system 1 are shut down, the first connection component 3 is disconnected, and the vehicle thermal management system exits the vehicle-to-ground collaborative management mode.

[0179] The fourth preset duration can be flexibly set as needed.

[0180] In some embodiments, the fourth preset duration can be 0 to 3 minutes, such as 1 minute, 2 minutes, and 3 minutes.

[0181] In some embodiments, the vehicle thermal management system further includes a second connection component 5 for connecting the first connection component 3 and the charging pile 6, and the vehicle thermal management method includes:

[0182] When the ground thermal management system 2 is in the start-up state, the temperature of the charging pile 6 that charges the power battery 41 on the vehicle is detected. When the temperature of the charging pile 6 is greater than or equal to the first preset temperature, or the charging pile 6 has a cooling requirement, or the charging process is expected to last longer than the fifth preset duration, the second connection component 5 is connected to cool the charging pile 6 using the ground thermal management system 2.

[0183] The first preset temperature and the fifth preset duration can be flexibly set as needed.

[0184] In some embodiments, the first preset temperature can be 44~46℃, such as 44℃, 44.5℃, 45℃, 45.5℃ and 46℃.

[0185] In some embodiments, the fifth preset duration can be 28 to 32 minutes, such as 28 minutes, 29 minutes, 30 minutes, 31 minutes, and 32 minutes.

[0186] In some embodiments, the vehicle thermal management system further includes a second connection component 5 for connecting the first connection component 3 and the charging pile 6, and the vehicle thermal management method includes:

[0187] When any of the conditions I to V occur, the vehicle-side thermal management system 1 and the ground-side thermal management system 2 are activated, the first connecting component 3 is connected or the first connecting component 3 and the second connecting component 5 are connected simultaneously, and the cooling capacity of the vehicle-side thermal management system 1 and the ground-side thermal management system 2 is adjusted to the maximum, so that the vehicle thermal management system enters the emergency management mode.

[0188] I. The ambient temperature of the vehicle is greater than or equal to the second preset temperature;

[0189] II. The temperature of the power battery 41 on the vehicle is greater than or equal to the third preset temperature;

[0190] III. The temperature rise rate of the power battery 41 is greater than or equal to the second preset rate;

[0191] IV. The temperature of the charging pile 6 that charges the power battery 41 is greater than or equal to the fourth preset temperature;

[0192] V. The vehicle-side thermal management system detected a risk of thermal runaway;

[0193] When the ambient temperature of the vehicle is lower than the second preset temperature, the temperature of the power battery 41 is lower than the third preset temperature, the temperature rise rate of the power battery 41 is lower than the second preset rate, the temperature of the charging pile 6 is lower than the fourth preset temperature, and the risk of thermal runaway is eliminated, the vehicle thermal management system 1 and the ground thermal management system 2 are shut down, or the cooling capacity of the vehicle thermal management system 1 and the ground thermal management system 2 is reduced, so that the vehicle thermal management system exits the emergency management mode.

[0194] The values ​​of the second preset temperature, the third preset temperature, the fourth preset temperature, and the second preset rate can be flexibly set as needed.

[0195] In some embodiments, the second preset temperature can be 53~57°C, such as 53°C, 54°C, 55°C, 56°C and 57°C.

[0196] In some embodiments, the third preset temperature can be 58~62℃, such as 58℃, 59℃, 60℃, 61℃ and 62℃.

[0197] In some embodiments, the fourth preset temperature can be 68~72℃, such as 68℃, 69℃, 70℃, 71℃ and 72℃.

[0198] In some embodiments, the second preset rate can be 4~6℃ / min, such as 4℃ / min, 4.5℃ / min, 5℃ / min, 5.5℃ / min and 6℃ / min.

[0199] The structure and operation of one embodiment of the vehicle thermal management system disclosed herein are described below:

[0200] like Figure 1 As shown, in this embodiment, the vehicle thermal management system includes a vehicle-side thermal management system 1, a ground-side thermal management system 2, a first connection component 3, a second connection component 5, and a control system.

[0201] Regarding the vehicle-side thermal management system 1:

[0202] The vehicle-side thermal management system 1 includes a second liquid storage tank 11, a second liquid pump 12, a second control valve 13, a second refrigeration system 14, and a second heat dissipation component 15.

[0203] The second liquid storage tank 11, the second liquid pump 12, the component to be cooled 4, and the second control valve 13 are connected to form a second circulation loop. The outlet of the second liquid pump 12 is connected to the component to be cooled 4, the component to be cooled 4 is connected to the second control valve 13, the second control valve 13 is connected to the second liquid storage tank 11, and the second liquid storage tank 11 is connected to the second liquid pump 12.

[0204] Second circulation loop: Under the negative pressure of the second liquid pump 12, the circulating medium in the second liquid tank 11 flows into the second liquid pump 12, and then flows out of the second liquid pump 12 and passes through the component to be cooled 4. After cooling the component to be cooled 4, it returns to the second liquid tank 11 through the second control valve 13.

[0205] The second refrigeration system 14 includes a second compressor 141, a third condenser 142, a second expansion valve 143, and a third evaporator 144 connected in sequence. The third evaporator 144 is connected to the second circulation loop.

[0206] Second refrigeration cycle: After the refrigerant is compressed by the second compressor 141, it enters the third condenser 142 to release heat, then passes through the second throttle valve 143 to reduce pressure, and then enters the third evaporator 144 to absorb heat, and finally returns to the second compressor 141.

[0207] After passing through the second control valve 13, the circulating medium in the second circulation loop exchanges heat with the refrigerant in the third evaporator 144. The refrigerant absorbs the heat of the circulating medium in the second circulation loop, causing the circulating medium to cool down. The cooled circulating medium can then continue to cool the components 4 that need to be cooled.

[0208] The second heat dissipation assembly 15 includes a fourth liquid storage tank 151, a fourth liquid pump 152, a second radiator 153, and a second fan 154. The fourth liquid storage tank 151, the fourth liquid pump 152, the second radiator 153, and the third condenser 142 are connected to form a third circulation loop.

[0209] The fourth liquid pump 152 is connected to the third condenser 142, the third condenser 142 is connected to the second radiator 153, the second radiator 153 is connected to the fourth liquid storage tank 151, and the fourth liquid storage tank 151 is connected to the fourth liquid pump 152.

[0210] The third circulation loop: After the circulating medium flows out of the fourth liquid storage tank 151, it enters the fourth liquid pump 152, and then flows through the third condenser 142. In the third condenser 142, the circulating medium exchanges heat with the refrigerant and carries away the heat released by the refrigerant. Then it enters the second radiator 153 and carries away the heat of the circulating medium through the second fan 154. Finally, the circulating medium flows back to the fourth liquid storage tank 151.

[0211] About the ground thermal management system 2:

[0212] The ground thermal management system 2 includes a first cooling component 2a and a second cooling component 2b connected in parallel.

[0213] Regarding the first cooling component 2a:

[0214] The first cooling component 2a includes a first liquid storage tank 21, a first liquid pump 22, a first control valve 23, a first refrigeration system 24, and a first heat dissipation component 25.

[0215] The first refrigeration system 24 includes a first compressor 241, a first condenser 242, a second condenser 243, a first throttle valve 244, a first evaporator 245, and a second evaporator 246.

[0216] The first heat dissipation assembly 25 includes a third liquid storage tank 251, a third liquid pump 252, a first radiator 253, and a first fan 254.

[0217] The first liquid storage tank 21 is connected to the first liquid pump 22. The outlet of the first liquid pump 22 is connected to the first evaporator 245 and the second evaporator 246 respectively. The first evaporator 245 and the second evaporator 246 are simultaneously connected to the first connecting assembly 3. The first connecting assembly 3 is connected to the component to be cooled 4. The component to be cooled 4 is connected to the first control valve 23 through the first connecting assembly 3. The first control valve 23 is connected to the first liquid storage tank 21.

[0218] The first liquid storage tank 21, the first liquid pump 22, the first control valve 23, the first connecting assembly 3, and the component to be cooled 4 are connected to form a first circulation loop.

[0219] First circulation loop: The circulating medium in the first liquid storage tank 21 enters the first liquid pump 22 under negative pressure, and then flows out of the first liquid pump 22 and enters the first evaporator 245 and the second evaporator 246 respectively. The circulating medium absorbs heat in the first evaporator 245 and the second evaporator 246 respectively. The cooled circulating medium enters the component to be cooled 4 through the first connecting assembly 3 to cool the component to be cooled. The cooled circulating medium flows back to the first liquid storage tank 21 through the first connecting assembly 3 and the first control valve 23.

[0220] First refrigeration cycle: After the refrigerant flows out from the outlet of the first compressor 241, it enters the first condenser 242 and the second condenser 243 to release heat, and then merges and enters the first throttle valve 244 to reduce pressure, and then enters the first evaporator 245 and the second evaporator 246 to absorb heat. After absorbing heat, the refrigerant merges and returns to the first compressor 241.

[0221] The outlet of the third liquid pump 252 is connected to the first condenser 242 and the second condenser 243 respectively. The first condenser 242 and the second condenser 243 are simultaneously connected to the first radiator 253. The first radiator 253 is connected to the third liquid storage tank 251. The third liquid storage tank 251 is connected to the third liquid pump 252.

[0222] The third liquid storage tank 251, the third liquid pump 252, the first condenser 242, the second condenser 243 and the first radiator 253 are connected to form the fourth circulation loop.

[0223] Fourth circulation loop: The circulating medium in the third liquid storage tank 251 enters the third liquid pump 252 under negative pressure. The circulating medium flowing out of the third liquid pump 252 flows through the first condenser 242 and the second condenser 243 to absorb heat. Then, when it flows through the first radiator 253, the absorbed heat is dissipated by the first fan 254. Finally, the circulating medium flows back to the third liquid storage tank 251.

[0224] Regarding the second cooling component 2b:

[0225] The second cooling component 2b includes a fifth liquid storage tank 26, a fifth liquid pump 27, a third control valve 28, a third refrigeration system 29, and a third heat dissipation component 290.

[0226] The third refrigeration system 29 includes a third compressor 291, a fourth condenser 292, a fifth condenser 293, a third throttle valve 294, a fourth evaporator 295, and a fifth evaporator 296.

[0227] The third heat dissipation assembly 290 includes a sixth liquid storage tank 2901, a sixth liquid pump 2902, a third radiator 2903, and a third fan 2904.

[0228] The fifth liquid storage tank 26 is connected to the fifth liquid pump 27. The outlet of the fifth liquid pump 27 is connected to the fourth evaporator 295 and the fifth evaporator 296 respectively. The fourth evaporator 295 and the fifth evaporator 296 are simultaneously connected to the first connecting assembly 3. The first connecting assembly 3 is connected to the component to be cooled 4. The component to be cooled 4 is connected to the third control valve 28 through the first connecting assembly 3. The third control valve 28 is connected to the fifth liquid storage tank 26.

[0229] The fifth liquid storage tank 26, the fifth liquid pump 27, the third control valve 28, the first connecting assembly 3, and the component to be cooled 4 are connected to form the fifth circulation loop.

[0230] Fifth circulation loop: The circulating medium in the fifth liquid storage tank 26 enters the fifth liquid pump 27 under negative pressure, and then flows out of the fifth liquid pump 27 and enters the fourth evaporator 295 and the fifth evaporator 296 respectively. The circulating medium absorbs heat in the fourth evaporator 295 and the fifth evaporator 296 respectively. The cooled circulating medium enters the component to be cooled 4 through the first connecting component 3 to cool the component to be cooled. The cooled circulating medium flows back to the fifth liquid storage tank 26 through the first connecting component 3 and the third control valve 28.

[0231] The third refrigeration cycle: After the refrigerant flows out from the outlet of the third compressor 291, it enters the fourth condenser 292 and the fifth condenser 293 to release heat, and then merges and enters the third throttle valve 294 to reduce pressure, and then enters the fourth evaporator 295 and the fifth evaporator 296 to absorb heat. After absorbing heat, the refrigerant merges and returns to the third compressor 291.

[0232] The outlet of the sixth liquid pump 2902 is connected to the fourth condenser 292 and the fifth condenser 293 respectively. The fourth condenser 292 and the fifth condenser 293 are also connected to the third radiator 2903. The third radiator 2903 is connected to the sixth liquid storage tank 2901. The sixth liquid storage tank 2901 is connected to the sixth liquid pump 2902.

[0233] The sixth liquid storage tank 2901, the sixth liquid pump 2902, the fourth condenser 292, the fifth condenser 293 and the third radiator 2903 are connected to form the sixth circulation loop.

[0234] The sixth circulation loop: the circulating medium in the sixth liquid storage tank 2901 enters the sixth liquid pump 2902 under negative pressure. The circulating medium flowing out of the sixth liquid pump 2902 flows through the fourth condenser 292 and the fifth condenser 293 to absorb heat. Then, when it flows through the third radiator 2903, the absorbed heat is dissipated by the third fan 2904. Finally, the circulating medium flows back to the sixth liquid storage tank 2901.

[0235] The first connecting assembly 3 includes a first connecting valve 31, a second connecting valve 32, a third connecting valve 33, and a fourth connecting valve 34. The first evaporator 245 and the second evaporator 246 are simultaneously connected to the third connecting point c, which is connected to the third connecting valve 33. The fourth evaporator 295 and the fifth evaporator 296 are simultaneously connected to the fourth connecting point d, which is connected to the fourth connecting valve 34. The third connecting valve 33 and the fourth connecting valve 34 are simultaneously connected to the first connecting point a, which is connected to the first connecting valve 31. The first connecting valve 31 is connected to the component 4 to be cooled.

[0236] The first control valve 23 and the third control valve 28 are simultaneously connected to the second connection point b, the second connection point b is connected to the second connection valve 32, and the second connection valve 32 is connected to the component 4 to be cooled.

[0237] The second connection assembly 5 includes a fifth connection valve 51, a sixth connection valve 52, a seventh connection valve 53, and an eighth connection valve 54. One end of the fifth connection valve 51 is connected to the first connection valve 31, and the other end of the fifth connection valve 51 is connected to the connection pipeline between the component to be cooled 4 and the second liquid pump 12. The sixth connection valve 52 connects the first connection valve 31 and the liquid inlet of the charging pile 6. One end of the seventh connection valve 53 is connected to the second connection valve 32, and the other end of the seventh connection valve 53 is connected to the connection pipeline between the component to be cooled 4 and the second control valve 13. The eighth connection valve 54 connects the second connection valve 32 and the liquid outlet of the charging pile 6.

[0238] The first temperature sensor 71 is disposed between the seventh connecting valve 53 and the component 4 to be cooled. The second temperature sensor 72 is disposed between the second connecting valve 32 and the second connection point b. The third temperature sensor 73 is disposed between the second connecting valve 32 and the eighth connecting valve 54.

[0239] The working mode of the vehicle thermal management system in this embodiment is described below:

[0240] The control system comprises an onboard controller (VCU), a ground controller, and a charging pile controller. These controllers exchange data via a real-time communication network. During charging, the VCU collects data on the vehicle's operating status, the battery temperature, and the status of various components in the vehicle's thermal management system. The ground controller coordinates the operational status of multiple cooling components and executes mode-switching decisions. The charging pile controller monitors the thermal state during charging and uploads cooling requirements. The control system establishes a unified time synchronization mechanism to ensure precise coordination of control commands.

[0241] Mode 1: Vehicle Management Mode

[0242] In this mode, the onboard controller (VCU) acts as the sole controller, independently completing all thermal management decisions and execution controls. The ground thermal management system 2 is completely disconnected, and all actuators related to ground cooling remain off.

[0243] Entry conditions: The vehicle control unit (VCU) continuously monitors the vehicle's operating status parameters. When both conditions a1 and a2 are met simultaneously, the vehicle management mode is entered.

[0244] a1. The vehicle speed signal is greater than 5 km / h for more than 30 seconds;

[0245] a2. Confirm that the charging connector (also known as the charging gun) is completely disconnected and the power battery pack is in a discharging or stationary state.

[0246] Control execution process: The vehicle controller (VCU) sends a command to first adjust the second control valve 13 to the open state; then start the second liquid pump 12 and the fourth liquid pump 152; next, adjust the speed of the second fan 154 to the initial value, and at the same time adjust the second throttle valve 143 to the initial opening degree; finally, start the second compressor 141.

[0247] The fifth connecting valve 51 and the seventh connecting valve 53 are adjusted to the closed state, and the second liquid pump 12 and the fourth liquid pump 152 operate at a fixed frequency. The speed of the second fan 154 is adjusted according to the inlet temperature of the second radiator 153. The opening of the second throttle valve 143 is adjusted according to the superheat of the second refrigeration system 14. The speed of the second compressor 141 is adjusted according to the inlet water temperature of the power battery 41 and the DC-DC converter 42.

[0248] Exit conditions: The exit procedure is initiated when the vehicle stops running and the charging connector establishes a valid connection, and both conditions a3 and a4 are met simultaneously.

[0249] a3. The vehicle speed signal remains zero for more than 60 seconds;

[0250] a4. Confirm the charging gun connection signal.

[0251] During the exit process, the vehicle-mounted controller (VCU) maintains the operation of the vehicle-side thermal management system 1 until control is completely transferred.

[0252] Mode 2: Ground Management Mode

[0253] Entry conditions: When conditions b1, b2, and b3 are met simultaneously, the vehicle enters pure ground cooling mode.

[0254] b1. The vehicle speed signal remains zero for more than 60 seconds;

[0255] b2. The ground controller detects that the charging connector is connected.

[0256] b3. The vehicle control unit (VCU) sends a cooling request.

[0257] Control execution process: After obtaining authorization from the vehicle-mounted controller (VCU), the ground controller shuts down the energy consumption of the second compressor 141 on the vehicle side and starts the ground thermal management system 2. The ground controller sends a command to close the second control valve 13, so that the first connecting valve 31, the second connecting valve 32, the third connecting valve 33, the first control valve 23, the fifth connecting valve 51, and the seventh connecting valve 53 are in the open state, the first liquid pump 22 and the third liquid pump 252 are started, the speed of the first fan 254 is adjusted to the initial value, the first throttle valve 244 is adjusted to the initial opening degree, and finally the first compressor 241 is started.

[0258] The first liquid pump 22 and the third liquid pump 252 operate at a fixed frequency. The speed of the first fan 254 is adjusted according to the inlet temperature of the first radiator 253. The opening of the first throttle valve 244 is adjusted according to the superheat of the first refrigeration system 24. The speed of the first compressor 241 is adjusted according to the inlet water temperature of the power battery 41 and the DC-DC converter 42 and the high pressure of the first compressor 241.

[0259] When the temperature of the second temperature sensor 72 continues to rise within 5 minutes and the average temperature rise rate exceeds 0.5℃ / min, the fourth connecting valve 34 and the third control valve 28 are opened first, then the fifth liquid pump 27 and the sixth liquid pump 2902 are opened, the speed of the third fan 2904 is adjusted to the initial value, the third throttle valve 294 is adjusted to the initial opening degree, and finally the third compressor 291 is opened.

[0260] The fifth liquid pump 27 and the sixth liquid pump 2902 operate at a fixed frequency. The speed of the third fan 2904 is adjusted according to the inlet temperature of the third radiator 2903. The opening of the third throttle valve 294 is adjusted according to the superheat of the third refrigeration system 29. The speed of the third compressor 291 is adjusted according to the inlet water temperature of the power battery 41 and the DC-DC converter 42 and the high pressure of the third compressor 291.

[0261] Exit conditions:

[0262] The operating condition exit procedure is initiated when condition b4 or b5 is met:

[0263] b4. The vehicle control unit (VCU) sends a charging completion signal;

[0264] b5. The charging gun is disconnected.

[0265] Mode 3: Vehicle-to-Ground Collaborative Management Mode

[0266] Entry condition: When condition c1 is met, the ground controller sends a command to the vehicle-mounted controller (VCU) to activate the vehicle-side thermal management system 1, entering the vehicle-side and ground-side collaborative management mode.

[0267] c1. The ground management mode cannot meet the cooling requirements, and the temperature of the power battery 41 and the DC-DC converter 42 cannot be maintained at 1°C lower than the maximum temperature limit requirement for the fourth preset duration.

[0268] Control execution process: First, adjust the second control valve 13 to the open state; then start the second liquid pump 12 and the fourth liquid pump 152; next, adjust the speed of the second fan 154 to the initial value, and at the same time adjust the second throttle valve 143 to the initial opening degree; finally, start the second compressor 141.

[0269] The second liquid pump 12 and the fourth liquid pump 152 operate at a fixed frequency. The speed of the second fan 154 is adjusted according to the inlet temperature of the second radiator 153. The opening of the second throttle valve 143 is adjusted according to the superheat of the second refrigeration system 14. The speed of the second compressor 141 is adjusted according to the inlet water temperature of the power battery 41 and the DC-DC converter 42.

[0270] Exit conditions:

[0271] The operating condition exit procedure is initiated when condition c2 or c3 is met:

[0272] c2. The vehicle control unit (VCU) sends a charging completion signal;

[0273] c3. The charging gun is disconnected.

[0274] Mode 4: Charging Pile Cooling Mode

[0275] Entry conditions: The charging station enters cooling mode when any one of the three conditions d1, d2, or d3 is met.

[0276] d1. The temperature of the charging pile 6 body reaches 45℃;

[0277] d2. The charging pile controller sends a cooling request;

[0278] d3. The charging process is expected to last more than 30 minutes.

[0279] Control execution process: Based on the ground management mode, the opening degree of the sixth connecting valve 52 and the eighth connecting valve 54 is dynamically adjusted to cool the charging pile 6.

[0280] Exit Conditions: The operating condition exit procedure will be initiated when any of the following conditions are met:

[0281] d4. Charging process complete;

[0282] The cooling requirements for d5 and charging pile 6 have disappeared.

[0283] Mode 5: Emergency Management Mode

[0284] Entry requirements: Meet any of the following conditions:

[0285] e1. Ambient temperature ≥ 55℃;

[0286] e2, The temperature of the power battery 41 is ≥60℃;

[0287] e3, The temperature rise rate of the power battery 41 is ≥5℃ / min;

[0288] e4. The temperature of key components of charging pile 6 is ≥70℃;

[0289] e5. The system has detected a risk of thermal runaway.

[0290] Control execution process: The ground controller opens all solenoid valves, starts all fans and liquid pumps, adjusts all throttle valves to their initial opening state, and the compressor adjusts its speed according to the system high pressure, the power battery 41 and the inlet water temperature of the DC-DC converter 42.

[0291] Exit conditions: The following conditions must be met simultaneously:

[0292] e6. System risk alert deactivated;

[0293] e7. Ambient temperature < 55℃;

[0294] e8. The temperature of the power battery 41 is <60℃;

[0295] e9. The temperature rise rate of the power battery 41 is <5℃ / min;

[0296] The temperature of key components of e10 and charging pile 6 is <70℃.

[0297] This disclosed vehicle thermal management system embodiment transfers the main heat dissipation function from the vehicle to the ground thermal management system by setting up a ground thermal management system, thus breaking through the bottleneck of vehicle-mounted heat dissipation capacity. Moreover, the ground thermal management system can be physically isolated from the vehicle, which is equivalent to physically isolating the noise sources such as fans and pumps in the ground thermal management system from the vehicle. It can also be placed in a dedicated space with sound insulation function, fundamentally solving the problem of charging noise pollution and significantly improving the comfort of the surrounding environment of the charging pile.

[0298] This disclosed vehicle thermal management system embodiment employs a design with multiple cooling components, enabling the cooling capacity of the thermal management system to be expanded as needed. Initial investment is low, and subsequent upgrade costs are minimal, significantly improving the flexibility of thermal management system deployment and return on investment.

[0299] In this embodiment of the vehicle thermal management system, the energy consumption of the ground thermal management system can be directly supplied by the power grid, rather than consuming the power of the vehicle battery, thereby improving the charging efficiency of the whole vehicle and reducing the charging cost for users.

[0300] This disclosed vehicle thermal management system embodiment achieves coordinated cooling between the vehicle and the ground thermal management system, optimizes the overall system architecture, and transfers the most uneconomical high-power heat dissipation function of the vehicle in a stationary state to a more professional and efficient ground thermal management system, thereby achieving precise energy control, improving overall energy efficiency, and conforming to the future development trend of smart energy and infrastructure.

[0301] The vehicle thermal management system embodiment disclosed herein is provided with multiple cooling components, which can dynamically allocate and coordinate the opening and closing states of each cooling component according to real-time heat load requirements.

[0302] The vehicle thermal management system embodiment disclosed herein also integrates the cooling of the charging pile into the ground thermal management system. This simplifies the charging pile structure and allows the same set of high-efficiency heat dissipation components to cool both the vehicle and the charging pile simultaneously.

[0303] In the embodiments of this disclosure, the controller in the control system may be a general-purpose processor, a programmable logic controller (PLC), a digital signal processor (DSP), an application-specific integrated circuit (ASIC), a field-programmable gate array (FPGA), or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, or any suitable combination thereof for performing the functions described in this disclosure.

[0304] The description of the various embodiments above tends to emphasize the differences between the various embodiments. The similarities or similarities between them can be referred to, and for the sake of brevity, they will not be repeated here.

[0305] Those skilled in the art will understand that, in the methods described in the specific embodiments, the order in which the steps are written does not imply a strict execution order and does not constitute any limitation on the implementation process. The specific execution order of each step should be determined by its function and possible internal logic.

[0306] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this disclosure and not to limit them; although this disclosure has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications can still be made to the specific implementation of this disclosure or equivalent substitutions can still be made to some technical features without departing from the principles of this disclosure, and such modifications and equivalent substitutions should all be covered within the scope of the technical solutions claimed in this disclosure.

Claims

1. A vehicle thermal management system, characterized in that, include: Vehicle-side thermal management system (1), installed on the vehicle; Ground thermal management system (2), which is fixed relative to the ground; The first connecting component (3) connects the ground thermal management system (2) and the component (4) to be cooled on the vehicle; and The control system is signal-connected to the vehicle-end thermal management system (1), the ground thermal management system (2) and the first connection component (3). The control system is configured to control the opening and closing of the vehicle-end thermal management system (1) and the ground thermal management system (2) and the on / off of the first connection component (3) to cool the component (4) to be cooled using at least one of the vehicle-end thermal management system (1) and the ground thermal management system (2).

2. The vehicle thermal management system according to claim 1, characterized in that, The vehicle thermal management system also includes a soundproof cabin, and the ground thermal management system (2) is located inside the soundproof cabin.

3. The vehicle thermal management system according to claim 1, characterized in that, The first connection component (3) is connected to the vehicle-side thermal management system (1).

4. The vehicle thermal management system according to claim 3, characterized in that, The vehicle thermal management system further includes a second connection component (5) for connecting the first connection component (3) and the charging pile (6) so that at least one of the vehicle-side thermal management system (1) and the ground thermal management system (2) can cool the charging pile (6).

5. The vehicle thermal management system according to claim 1, characterized in that, The ground thermal management system (2) includes at least two sets of cooling components, and the at least two sets of cooling components are connected in parallel.

6. The vehicle thermal management system according to claim 1, characterized in that, The ground thermal management system (2) includes a first cooling component (2a) and a second cooling component (2b). The first connecting component (3) includes a first connecting valve (31) and a second connecting valve (32). The liquid outlet pipe of the first cooling component (2a) and the liquid outlet pipe of the second cooling component (2b) are connected in parallel at a first connection point (a). The first connecting valve (31) connects the first connection point (a) and the component to be cooled (4). The liquid inlet pipe of the first cooling component (2a) and the liquid inlet pipe of the second cooling component (2b) are connected in parallel at a second connection point (b). The second connecting valve (32) connects the second connection point (b) and the component to be cooled (4).

7. The vehicle thermal management system according to claim 6, characterized in that, The first connecting component (3) further includes a third connecting valve (33) and a fourth connecting valve (34). The third connecting valve (33) connects the first cooling component (2a) and the first connection point (a), and the fourth connecting valve (34) connects the second cooling component (2b) and the first connection point (a).

8. The vehicle thermal management system according to claim 6, characterized in that, The vehicle thermal management system further includes a second connection component (5), which is used to connect the first connection component (3) and the charging pile (6). The second connection component (5) includes a fifth connection valve (51), a sixth connection valve (52), a seventh connection valve (53), and an eighth connection valve (54). The fifth connection valve (51) connects the first connection valve (31) and the component to be cooled (4). The sixth connection valve (52) connects the first connection valve (31) and the liquid inlet pipe of the charging pile (6). The seventh connection valve (53) connects the second connection valve (32) and the component to be cooled (4). The eighth connection valve (54) connects the second connection valve (32) and the liquid outlet pipe of the charging pile (6).

9. The vehicle thermal management system according to claim 1, characterized in that, The ground thermal management system (2) includes a first cooling component (2a) and a second cooling component (2b) connected in parallel. The first cooling component (2a) includes a first liquid storage tank (21), a first liquid pump (22), a first control valve (23), and a first refrigeration system (24). The first liquid storage tank (21), the first liquid pump (22), the first control valve (23), the first connecting component (3), and the component to be cooled (4) are connected to form a first circulation loop. The first refrigeration system (24) is configured to reduce the temperature of the circulating medium flowing in the first circulation loop.

10. The vehicle thermal management system according to claim 9, characterized in that, The first refrigeration system (24) includes a first compressor (241), a first condenser (242) assembly, a first throttle valve (244), a first evaporator (245), and a second evaporator (246). The first condenser (242) assembly is connected between the exhaust port of the first compressor (241) and the inlet of the first throttle valve (244). The first evaporator (245) and the second evaporator (246) are connected in parallel between the outlet of the first throttle valve (244) and the inlet of the first compressor (241). The first evaporator (245) and the second evaporator (246) are connected in parallel between the first liquid pump (22) and the first connecting assembly (3).

11. The vehicle thermal management system according to claim 10, characterized in that, The first cooling component (2a) further includes a first heat dissipation component (25). The first condenser (242) component includes a first condenser (242) and a second condenser (243). The first condenser (242) and the second condenser (243) are connected in parallel between the exhaust port of the first compressor (241) and the inlet of the first throttle valve (244). The first condenser (242) and the second condenser (243) are connected in parallel in the first heat dissipation component (25). The first heat dissipation component (25) is configured to dissipate heat from the first condenser (242) and the second condenser (243).

12. The vehicle thermal management system according to claim 1, characterized in that, The vehicle-side thermal management system (1) includes a second liquid storage tank (11), a second liquid pump (12), a second control valve (13), and a second refrigeration system (14). The second liquid storage tank (11), the second liquid pump (12), the component to be cooled (4), and the second control valve (13) are connected to form a second circulation loop. The second refrigeration system (14) is configured to reduce the temperature of the circulating medium flowing in the second circulation loop.

13. The vehicle thermal management system according to claim 12, characterized in that, The vehicle-side thermal management system (1) further includes a second heat dissipation component (15), which is configured to dissipate heat from the heat-generating components in the second cooling system (14).

14. A ground thermal management system (2) for a vehicle thermal management system as described in any one of claims 1 to 13.

15. A vehicle thermal management method based on a vehicle thermal management system as described in any one of claims 1 to 13, characterized in that, The vehicle thermal management method includes: Control the opening and closing of the vehicle-side thermal management system (1) and the ground thermal management system (2) and the on / off of the first connecting component (3) to cool the vehicle-side components (4) to be cooled using at least one of the vehicle-side thermal management system (1) and the ground thermal management system (2).

16. The vehicle thermal management method according to claim 15, characterized in that, The vehicle thermal management method includes: When the vehicle controller detects that the vehicle speed is continuously greater than the preset speed for a first preset time period and the charging connector of the power battery (41) on the vehicle is in a completely disconnected state, the vehicle-side thermal management system (1) is activated, the ground thermal management system (2) is shut down, the first connection component (3) is disconnected, and the vehicle thermal management system enters the vehicle-side management mode. When the vehicle controller detects that the vehicle speed is zero for a second preset period of time and the charging connector is in a connected state, the vehicle thermal management system (1) is shut down, so that the vehicle thermal management system exits the vehicle management mode.

17. The vehicle thermal management method according to claim 16, characterized in that, The vehicle-side thermal management system (1) includes a second liquid storage tank (11), a second liquid pump (12), a second refrigeration system (14), a second control valve (13), and a second heat dissipation assembly (15). The second liquid storage tank (11), the second liquid pump (12), the component to be cooled (4), and the second control valve (13) are connected to form a second circulation loop. The second refrigeration system (14) includes a second compressor (141), a third condenser (142), a second throttle valve (143), and a third evaporator (144). The circulating medium flowing in the second circulation loop flows through the third evaporator (144). The second heat dissipation assembly (15) is configured to dissipate heat from the third condenser (142). The operation of starting the vehicle-side thermal management system (1) includes: First, adjust the second control valve (13) to the open state; Then restart the second liquid pump (12), which operates in a fixed frequency mode; Next, the rotational speed of the rotating component in the second heat dissipation assembly (15) is adjusted to the initial value, and the second throttle valve (143) is adjusted to the initial opening. Finally, the second compressor (141) is started, and after the second compressor (141) is started, the rotation speed of the rotating part in the second heat dissipation assembly (15) is adjusted according to the temperature of the third condenser (142), the opening of the second throttle valve (143) is adjusted according to the superheat of the second refrigeration system (14), and the rotation speed of the second compressor (141) is adjusted according to the liquid inlet temperature of the power battery (41) and the exhaust port pressure of the second compressor (141).

18. The vehicle thermal management method according to claim 15, characterized in that, The vehicle thermal management method includes: When the vehicle controller detects that the vehicle speed is zero for a second preset time period, the charging connector of the power battery (41) on the vehicle is connected, and the vehicle has a cooling requirement, the vehicle thermal management system (1) is turned off, the ground thermal management system (2) is started, the first connection component (3) is connected, and the vehicle thermal management system enters the ground management mode. When the vehicle controller sends a signal that charging is finished, or when the charging connector enters a disconnected state, the ground thermal management system (2) is shut down, the first connection component (3) is disconnected, and the vehicle thermal management system exits the ground management mode.

19. The vehicle thermal management method according to claim 18, characterized in that, The ground thermal management system (2) includes a first cooling component (2a) and a second cooling component (2b) connected in parallel. The first cooling component (2a) includes a first liquid storage tank (21), a first liquid pump (22), a first control valve (23), a first refrigeration system (24), and a first heat dissipation component (25). The first liquid storage tank (21), the first liquid pump (22), the first control valve (23), the first connecting component (3), and the component to be cooled (4) are connected to form a first circulation loop. The first refrigeration system (24) includes a first compressor (241), a first condenser (242), a second condenser (243), a first throttle valve (244), and a first evaporator (245). The first condenser (242) and the second condenser (243) are connected in parallel between the exhaust port of the first compressor (241) and the inlet of the first throttle valve (244), the first evaporator (245) and the second evaporator (246) are connected in parallel between the outlet of the first throttle valve (244) and the inlet of the first compressor (241), and the first condenser (242) and the second condenser (243) are connected in parallel between the first heat dissipation assembly (25), and the first evaporator (245) and the second evaporator (246) are connected in parallel between the first liquid pump (22) and the first connecting assembly (3). The operation of starting the ground thermal management system (2) includes: First connect the first connection component (3); Restart the first liquid pump (22), which operates in a fixed frequency mode; Next, the rotation speed of the rotating component in the first heat dissipation assembly (25) is adjusted to the initial value, and the first throttle valve (244) is adjusted to the initial opening. Finally, the first compressor (241) is started, and after the first compressor (241) is started, the rotation speed of the rotating part in the first heat dissipation assembly (25) is adjusted according to the temperature of the first condenser (242) and the second condenser (243), the opening degree of the first throttle valve (244) is adjusted according to the superheat of the first refrigeration system (24), and the rotation speed of the first compressor (241) is adjusted according to the liquid inlet temperature of the power battery (41) and the exhaust port pressure of the first compressor (241). When the liquid temperature of the power battery (41) continues to rise within a third preset time period and the average temperature rise rate exceeds the first preset rate, the second cooling component (2b) is activated.

20. The vehicle thermal management method according to claim 18, characterized in that, The vehicle thermal management method includes: When the vehicle thermal management system is in the ground management mode, the temperature of the component to be cooled (4) is detected. When the temperature of the component to be cooled (4) cannot be maintained at 1°C lower than the maximum limit temperature within the fourth preset time, the vehicle thermal management system (1) is activated, so that the vehicle thermal management system enters the vehicle and ground collaborative management mode. When the vehicle controller sends a signal indicating that charging has ended, or when the charging connector enters a disconnected state, the ground thermal management system (2) and the vehicle thermal management system (1) are shut down, the first connection component (3) is disconnected, and the vehicle thermal management system exits the vehicle-to-ground collaborative management mode.

21. The vehicle thermal management method according to claim 15, characterized in that, The vehicle thermal management system further includes a second connection component (5), which is used to connect the first connection component (3) and the charging pile (6). The vehicle thermal management method includes: When the ground thermal management system (2) is in the start state, the temperature of the charging pile (6) charging the power battery (41) on the vehicle is detected. When the temperature of the charging pile (6) is greater than or equal to the first preset temperature, or the charging pile (6) has a cooling requirement, or the charging process is expected to last longer than the fifth preset duration, the second connection component (5) is connected to cool the charging pile (6) using the ground thermal management system (2).

22. The vehicle thermal management method according to claim 15, characterized in that, The vehicle thermal management system further includes a second connection component (5), which is used to connect the first connection component (3) and the charging pile (6). The vehicle thermal management method includes: When any of the conditions I to V occur, the vehicle-side thermal management system (1) and the ground thermal management system (2) are activated, the first connecting component (3) is connected or the first connecting component (3) and the second connecting component (5) are connected simultaneously, and the cooling capacity of the vehicle-side thermal management system (1) and the ground thermal management system (2) is adjusted to the maximum, so that the vehicle thermal management system enters the emergency management mode. I. The ambient temperature of the vehicle is greater than or equal to the second preset temperature; II. The temperature of the power battery (41) on the vehicle is greater than or equal to the third preset temperature; III. The temperature rise rate of the power battery (41) is greater than or equal to the second preset rate; IV. The temperature of the charging pile (6) that charges the power battery (41) is greater than or equal to the fourth preset temperature; V. The vehicle-side thermal management system (1) detects a risk of thermal runaway; When the ambient temperature of the vehicle is lower than the second preset temperature, the temperature of the power battery (41) is lower than the third preset temperature, the temperature rise rate of the power battery (41) is lower than the second preset rate, the temperature of the charging pile (6) is lower than the fourth preset temperature, and the risk of thermal runaway is eliminated, the vehicle-side thermal management system (1) and the ground thermal management system (2) are shut down, or the cooling capacity of the vehicle-side thermal management system (1) and the ground thermal management system (2) is reduced, so that the vehicle thermal management system exits the emergency management mode.

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