Battery thermal management system and vehicle with same

Abstract

The utility model discloses a battery thermal management system and a vehicle with the same. The battery thermal management system comprises a cooling module; the heat management module is provided with a cooling liquid circulating flow path, and the cooling liquid circulating flow path is connected with the cooling module for heat exchange; the cooling liquid circulation flow path comprises a main flow path and a cooling liquid circulation flow path, the upper part branch is connected with the main flow path, the upper part branch is connected with an upper part power battery and an upper part cooling valve and is connected with the cooling module, and the upper part cooling valve is used for controlling the on-off of the upper part branch; the chassis branch is connected with the main flow path and connected with the main flow path in parallel, the chassis branch is connected with a chassis power battery and a chassis cooling valve and connected with the cooling module, and the chassis cooling valve is used for controlling on-off of the chassis branch. According to the battery thermal management system provided by the embodiment of the utility model, the service life of the power battery is prolonged, and the energy consumption of the whole vehicle is reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of vehicle parts especially to a battery thermal management system and vehicle with same. BACKGROUND

[0002] Some vehicles usually carry two kinds of top-mounted power batteries and chassis power batteries, and the electric cars in the related art usually only carry one battery thermal management system, which cannot distinguish and manage heat, and when the top-mounted power battery or the chassis power battery has any demand, the refrigeration demand can be started, which increases the energy consumption of the whole vehicle and reduces the endurance of the whole vehicle, and if one power battery has no demand but still triggers the refrigeration demand, the power battery temperature is too low to easily produce condensed water, which reduces the insulation performance and service life of the power battery. SUMMARY

[0003] The utility model aims at at least solving one of the technical problems existing in the prior art. To this end, one purpose of the utility model is to provide a battery thermal management system, which improves the service life of the power battery and reduces the energy consumption of the whole vehicle by partitioning the thermal management module.

[0004] The utility model further provides a vehicle with the battery thermal management system.

[0005] To achieve the above-mentioned purpose, according to the battery thermal management system provided in the utility model embodiment, the cooling module, the thermal management module with the cooling liquid circulation flow path connected with the cooling module for heat exchange, wherein the cooling liquid circulation flow path comprises the main flow path, the top-mounted branch connected with the main flow path, the top-mounted power battery and the top-mounted cooling valve connected with the top-mounted branch and connected with the cooling module, the top-mounted cooling valve for controlling the on-off of the top-mounted branch, and the chassis branch connected with the main flow path in parallel with the top-mounted branch, the chassis power battery and the chassis cooling valve connected with the chassis branch and connected with the cooling module, and the chassis cooling valve for controlling the on-off of the chassis branch.

[0006] According to the battery thermal management system provided in the utility model embodiment, the on-off of the top-mounted cooling valve and the chassis cooling valve is controlled to control the top-mounted power battery and the chassis power battery, and the flow direction of the cooling liquid circulation flow path is controlled, so that the purpose of partition control is achieved under different working modes.

[0007] Specifically, when the upper-mounted power battery has a refrigeration requirement and the chassis power battery does not have a refrigeration requirement, the cooling module circulates one side of the cooling liquid, and the cooling liquid in the thermal management module enters the upper-mounted power battery to absorb heat after passing through the upper-mounted cooling valve, and then completes circulation of the other side of the cooling liquid through the main flow path. When the chassis power battery has a refrigeration requirement and the upper-mounted power battery does not have a refrigeration requirement, the cooling module circulates one side of the cooling liquid, and the cooling liquid in the thermal management module enters the chassis power battery to absorb heat after passing through the chassis cooling valve, and then completes circulation of the other side of the cooling liquid through the main flow path. When the upper-mounted power battery and the chassis power battery have refrigeration requirements at the same time, the cooling module circulates one side of the cooling liquid, and the cooling liquid in the thermal management module enters the upper-mounted power battery and the chassis power battery to absorb heat after passing through the upper-mounted cooling valve and the chassis cooling valve, and then completes circulation of the other side of the cooling liquid through the main flow path.

[0008] By flexibly adjusting according to the cooling requirements of different modules, the working of the thermal management system can be optimized according to actual conditions, unified cooling of the entire system is avoided, the energy consumption of the whole vehicle is reduced, and the service life of the power battery is improved.

[0009] Therefore, according to the battery thermal management system 1 of the embodiment of the utility model, the service life of the power battery and the energy consumption of the whole vehicle are improved by partition management of the thermal management module.

[0010] According to some specific embodiments of the utility model, the cooling module has a refrigerant circulation flow path, which is connected with: a compressor, which drives the refrigerant to circulate in the refrigerant circulation flow path; a first heat exchanger, which is in communication with the outside of the vehicle; and a second heat exchanger, which is connected with the thermal management module for heat exchange.

[0011] According to some specific embodiments of the utility model, the second heat exchanger is configured with: a refrigerant inlet and a refrigerant outlet, which are in communication inside the second heat exchanger to communicate the refrigerant circulation flow path; and a cooling liquid inlet and a cooling liquid outlet, which are in communication inside the second heat exchanger to communicate the cooling liquid circulation flow path.

[0012] According to some specific embodiments of the utility model, it further comprises: a cooling fan corresponding to the position of the first heat exchanger, which is used to dissipate the heat of the first heat exchanger to the outside of the vehicle.

[0013] According to some specific embodiments of the utility model, the refrigerant circulation flow path is further connected with: an expansion valve, which is connected between the first heat exchanger and the second heat exchanger, and is used to control the flow of the refrigerant.

[0014] According to some specific embodiments of the present application, the main flow path is connected with: an expansion water kettle, the expansion water kettle is used for filling and storing cooling liquid; a water pump, the water pump is connected to the expansion water kettle and drives the cooling liquid to circulate along the refrigerant circulating flow path.

[0015] According to some specific embodiments of the present application, the upper-mounted cooling valve and the chassis cooling valve are both two-way valves, and the water pump drives the cooling liquid to flow unidirectionally along the refrigerant circulating flow path.

[0016] According to the second aspect of the present application, a vehicle is provided, comprising a chassis, a battery thermal management system according to the above embodiments of the present application, an upper-mounted power battery, the cooling liquid circulating flow path of the battery thermal management system optionally passes through the upper-mounted power battery, the upper-mounted power battery is installed on the chassis and is used for supplying power to an upper-mounted mechanism, and a chassis power battery, the cooling liquid circulating flow path of the battery thermal management system optionally passes through the chassis power battery, the chassis power battery is installed on the chassis and is used for supplying power to a vehicle power system.

[0017] According to the second aspect of the present application, a vehicle is provided, comprising a chassis, an upper-mounted frame, a battery thermal management system according to the above embodiments of the present application, an upper-mounted power battery, the cooling liquid circulating flow path of the battery thermal management system optionally passes through the upper-mounted power battery, the upper-mounted power battery is installed on the chassis and is used for supplying power to an upper-mounted mechanism, and a chassis power battery, the cooling liquid circulating flow path of the battery thermal management system optionally passes through the chassis power battery, the chassis power battery is installed on the chassis and is used for supplying power to a vehicle power system.

[0018] According to the vehicle of the present application, by using the battery thermal management system according to the present application, the service life of the power battery is improved and the energy consumption of the vehicle is reduced by using the partitioned thermal management module.

[0019] According to some specific embodiments of the present application, the vehicle is a sanitation vehicle and comprises a cleaning mechanism, and the upper-mounted power battery is used for supplying power to the cleaning mechanism.

[0020] Additional aspects and advantages of the present application will be in part apparent and in part pointed out hereinafter. BRIEF DESCRIPTION OF DRAWINGS

[0021] The above and / or additional aspects and advantages of the present application will become apparent and be readily appreciated from the following description, taken in conjunction with the accompanying drawings, in which:

[0022] Figure 1is a structural block diagram of a battery thermal management system according to an embodiment of the present application.

[0023] Reference signs:

[0024] Battery thermal management system 1, cooling module 100, thermal management module 200, heat dissipation fan 300,

[0025] Expansion valve 400, expansion water kettle 500, water pump 600,

[0026] Refrigerant circulation flow path 101, compressor 110, first heat exchanger 120, second heat exchanger 130,

[0027] Refrigerant inlet 131, refrigerant outlet 132, coolant inlet 133, coolant outlet 134,

[0028] Coolant circulation flow path 210, main flow path 211, upper-mounted branch flow path 212, chassis branch flow path 213,

[0029] Upper-mounted power battery 201, upper-mounted cooling valve 202, chassis power battery 203, chassis cooling valve 204. DETAILED DESCRIPTION

[0030] The embodiments of the present application will be described in detail below, examples of which are shown in the drawings, wherein the same or similar notations represent the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary and are only used to explain the present application, and cannot be understood as a limitation of the present application.

[0031] In the description of the present application, it should be understood that the orientations or positional relationships indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential" and the like are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation of the present application.

[0032] In the description of the present application, "first feature" and "second feature" can include one or more features.

[0033] In the description of the present application, "a plurality of" means two or more, and "several" means one or more.

[0034] A battery thermal management system 1 according to an embodiment of the present application will be described below with reference to the drawings.

[0035] As Figure 1 shown, the battery thermal management system 1 according to the embodiment of the utility model includes a cooling module 100 and a thermal management module 200.

[0036] The thermal management module 200 has a cooling liquid circulation flow path 210 connected with the cooling module 100 for heat exchange.

[0037] The upper-mounted power battery 201 and the upper-mounted cooling valve 202 are connected with the upper-mounted branch 212, and the upper-mounted branch 212 is connected with the cooling module 100; the upper-mounted cooling valve 202 is used for controlling the on-off of the upper-mounted branch 212. The bottom-mounted power battery 203 and the bottom-mounted cooling valve 204 are connected with the bottom-mounted branch 213, and the bottom-mounted branch 213 is connected with the cooling module 100; the bottom-mounted cooling valve 204 is used for controlling the on-off of the bottom-mounted branch 213.

[0038] For example, the upper-mounted branch 212 and the bottom-mounted branch 213 are connected in parallel with the main flow path 211 in series to form a complete cooling liquid circulation flow path 210; when the upper-mounted power battery 201 has a refrigeration demand, the upper-mounted cooling valve 202 can be opened to connect the circuit between the upper-mounted power battery 201 and the cooling module 100; when the bottom-mounted power battery 203 has a refrigeration demand, the bottom-mounted cooling valve 204 can be opened to connect the circuit between the bottom-mounted power battery 203 and the cooling module 100; when the upper-mounted power battery 201 and the bottom-mounted power battery 203 have refrigeration demands at the same time, the upper-mounted cooling valve 202 and the bottom-mounted cooling valve 204 can be opened at the same time, and the upper-mounted power battery 201 and the bottom-mounted power battery 203 are connected with the circuit between the cooling module 100.

[0039] According to the battery thermal management system 1 of the embodiment of the utility model, the on-off of the upper-mounted cooling valve 202 and the bottom-mounted cooling valve 204 is controlled to control the upper-mounted power battery 201 and the bottom-mounted power battery 203, and then the flow direction of the cooling liquid circulation flow path 210 is controlled, so that the purpose of partition control is achieved under different working modes.

[0040] Specifically, when the upper-mounted power battery 201 has a cooling demand and the chassis power battery 203 does not have a cooling demand, the cooling module 100 circulates one side of the cooling liquid, and the cooling liquid in the thermal management module 200 enters the upper-mounted power battery 201 to absorb heat after passing through the upper-mounted cooling valve 203, and then completes the circulation of the other side of the cooling liquid through the main flow path 211. When the chassis power battery 203 has a cooling demand and the upper-mounted power battery 201 does not have a cooling demand, the cooling module 100 circulates one side of the cooling liquid, and the cooling liquid in the thermal management module 200 enters the chassis power battery 203 to absorb heat after passing through the chassis cooling valve 204, and then completes the circulation of the other side of the cooling liquid through the main flow path 211. When the upper-mounted power battery 201 and the chassis power battery 203 have a cooling demand at the same time, the cooling module 100 circulates one side of the cooling liquid, and the cooling liquid in the thermal management module 200 enters the upper-mounted power battery 201 and the chassis power battery 203 to absorb heat after passing through the upper-mounted cooling valve 202 and the chassis cooling valve 204, and then completes the circulation of the other side of the cooling liquid through the main flow path 211.

[0041] By flexibly adjusting according to the cooling demand of different modules, the working of the battery thermal management system 1 can be optimized according to the actual situation, avoiding unified cooling of the whole battery thermal management system 1, reducing the energy consumption of the whole vehicle, and improving the service life of the power battery.

[0042] Therefore, according to the battery thermal management system 1 of the embodiment of the utility model, the service life of the power battery is improved and the energy consumption of the whole vehicle is reduced by partition management of the thermal management module 200.

[0043] In some specific embodiments of the utility model, as shown in Figure 1 The cooling module 100 has a refrigerant circulation flow path 101, and the refrigerant circulation flow path 101 is connected with a compressor 110, a first heat exchanger 120 and a second heat exchanger 130. The compressor 110 drives the refrigerant to circulate in the refrigerant circulation flow path 101. The first heat exchanger 120 is in communication with the outside of the vehicle. The second heat exchanger 130 is connected with the thermal management module 200 for heat exchange.

[0044] The compressor 110 in the refrigerant circulation flow path 101 is responsible for driving the refrigerant to circulate in the system, and the pressure and temperature of the refrigerant are improved by compressing the refrigerant, so that it can effectively absorb and transfer heat. This process ensures that the power battery can maintain in an appropriate temperature range when working, prevents overheating or overcooling, and thus improves the performance of the power battery and prolongs its service life.

[0045] The first heat exchanger 120 is in communication with the outside of the vehicle and can release heat in the refrigerant to the outside environment, thereby achieving cooling and ensuring that the battery thermal management system 1 can maintain a low temperature and improve heat dissipation efficiency. The second heat exchanger 130 is connected to the thermal management module 200 and can achieve heat exchange between the power battery and the refrigerant, so that the refrigerant can absorb heat from the power battery and further control the working temperature of the power battery.

[0046] In some embodiments of the present application, as shown in Figure 1 The second heat exchanger 130 is configured with a refrigerant inlet 131 and a refrigerant outlet 132, a coolant inlet 133 and a coolant outlet 134. The refrigerant inlet 131 and the refrigerant outlet 132 are in communication inside the second heat exchanger 130 to communicate the refrigerant circulation flow path 101. The coolant inlet 133 and the coolant outlet 134 are in communication inside the second heat exchanger 130 to communicate the coolant circulation flow path 210.

[0047] The main function of the second heat exchanger 130 is to achieve efficient heat exchange between the refrigerant and the coolant. The refrigerant enters through the refrigerant inlet 131 and carries away excess heat from the power battery, while the coolant enters through the coolant inlet 133 and receives heat from the refrigerant in the second heat exchanger 130 to maintain the optimal working temperature of the battery.

[0048] In some embodiments of the present application, as shown in Figure 1 The battery thermal management system 1 further comprises a heat dissipation fan 300. The heat dissipation fan 300 corresponds to the position of the first heat exchanger 120 and is used to dissipate heat from the first heat exchanger 120 to the outside of the vehicle.

[0049] The heat dissipation fan 300 promotes the heat dissipation efficiency of the first heat exchanger 130 by forced air flow. By quickly removing heat, the temperature of the first heat exchanger 120 is reduced, thereby maintaining the working temperature range of the power battery and preventing excessive temperature from negatively affecting the performance and life of the power battery. At the same time, during the operation of the power battery, especially during high load or charging, the power battery will generate more heat. The heat dissipation fan 300 can be started or stopped in time according to the working state and temperature information of the power battery, and the temperature of the power battery can be adjusted in real time to keep it in the best working state.

[0050] In some embodiments of the present application, as shown in Figure 1 The refrigerant circulation flow path is further connected with an expansion valve 400, which is connected between the first heat exchanger 120 and the second heat exchanger 130 and is used to control the flow of refrigerant.

[0051] The expansion valve 400 reduces the high-pressure liquid coolant from the first heat exchanger 120 (condenser) to a low-pressure state, causing the coolant to evaporate into a gaseous state. This process is accompanied by a drop in temperature, thus preparing for the subsequent heat absorption process. According to the actual needs of the system, the expansion valve 400 can automatically adjust the opening degree, thereby accurately controlling the coolant entering the second heat exchanger 130 (evaporator). This adjustment helps to maintain the coolant at the correct superheat state at the outlet of the second heat exchanger 130, i.e., to ensure that all liquid refrigerant is completely evaporated while avoiding excessive superheated vapor generation, which can improve refrigeration efficiency and protect the compressor from liquid knock damage.

[0052] In some embodiments of the present application, as shown in Figure 1 The main flow path is connected with an expansion water tank 500 and a water pump 600. The expansion water tank 500 is used for filling and storing coolant. The water pump 600 is connected to the expansion water tank 500 and drives the coolant to circulate along the refrigerant circulation flow path 101.

[0053] The expansion water tank 500 is mainly used for filling and storing coolant, ensuring that there is always enough coolant supply in the system. When the temperature of the coolant rises and expands, the expansion water tank 500 can accommodate the excess coolant to prevent the battery thermal management system 1 from being damaged due to excessive pressure. At the same time, when the liquid temperature decreases, the excess amount in the expansion water tank 500 can be supplemented to the battery thermal management system 1 to maintain stable circulation.

[0054] The function of the water pump 600 is to drive the coolant to flow in the refrigerant circulation flow path 101, and by actively pumping the coolant, it increases its flow rate, ensuring that the coolant can quickly reach the power battery, thereby effectively improving the heat exchange efficiency, and thus better managing the temperature.

[0055] In some embodiments of the present application, as shown in Figure 1 The upper cooling valve 202 and the chassis cooling valve 204 are both two-way valves, and the water pump 600 drives the coolant to flow unidirectionally along the refrigerant circulation flow path.

[0056] The structure of the two-way valve simplifies the flow control of the coolant and can effectively switch the cooling path. When the upper power battery 201 or the chassis power battery 203 needs to be cooled, the corresponding cooling valve can be quickly selected to ensure the efficiency of the coolant.

[0057] Since the flow of the coolant is unidirectional, when cooling is needed, the water pump 600 can be quickly started, reducing the delay reaction time of the coolant, so that the system can quickly adjust to the temperature change of the power battery, improving the response speed of the battery thermal management system.

[0058] A vehicle according to an embodiment of the present application is described below.

[0059] The vehicle according to the embodiment of the utility model, including chassis, battery thermal management system 1 according to the above embodiment of the utility model, upper-mounted power battery 201 and chassis power battery 203. The cooling liquid circulation flow path 210 of battery thermal management system 1 can optionally pass through upper-mounted power battery 201, and upper-mounted power battery 201 is installed on the chassis and is used to power the upper-mounted mechanism. The cooling liquid circulation flow path 101 can optionally pass through chassis power battery 203, and chassis power battery 203 is installed on the chassis and is used to power the vehicle power system.

[0060] The vehicle according to the embodiment of the utility model, including chassis, upper-mounted frame, battery thermal management system 1 according to the above embodiment of the utility model, upper-mounted power battery 204 and chassis power battery 203. The cooling liquid circulation flow path 210 of battery thermal management system 1 can optionally pass through upper-mounted power battery, and upper-mounted power battery 201 is detachably installed on the upper-mounted frame and is used to power the upper-mounted mechanism. The cooling liquid circulation flow path 210 can optionally pass through chassis power battery 203, and chassis power battery 203 is installed on the chassis and is used to power the vehicle power system.

[0061] The upper-mounted power battery 201 and the chassis power battery 203 can be commonly installed on the chassis, or the upper-mounted power battery 201 can be installed on the upper-mounted frame, and the chassis power battery 203 can be installed on the chassis.

[0062] The battery thermal management system 1 can effectively control the temperature of the upper-mounted power battery 201 and the chassis power battery 203, and the two groups of batteries are cooled by selecting the cooling liquid circulation flow path 210, so that they can operate in an ideal temperature range, and the battery performance and service life are improved.

[0063] According to the vehicle according to the above embodiment of the utility model, by using the battery thermal management system 1 according to the embodiment of the utility model, the service life of the power battery is improved and the energy consumption of the whole vehicle is reduced by using the partition management heat management module 200.

[0064] In some specific embodiments of the utility model, the vehicle is a sanitation vehicle, and the vehicle comprises a cleaning mechanism, and the upper-mounted power battery is used to power the cleaning mechanism.

[0065] The structure of the cleaning mechanism can enable the sanitation vehicle to clean streets, public facilities and the like in time and effectively, maintain the cleanliness of the urban environment, and improve the urban image. Meanwhile, by using the upper-mounted power battery 201 to supply power, the sanitation vehicle can reduce the dependence on fossil fuels, has zero emissions during operation, reduces air pollution, and meets environmental protection requirements.

[0066] In addition, the cleaning mechanism driven by the upper-mounted power battery 201 usually has a simpler structure and less wear, and compared with traditional fuel equipment, the maintenance cost is reduced, and the service life of the equipment can be prolonged.

[0067] Other configurations and operations according to embodiments of the present application are known to those of ordinary skill in the art and are not described in detail here.

[0068] In the description of the present application, the description of the terms "one embodiment", "some embodiments", "exemplary embodiment", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In the present application, the exemplary description of the above terms does not necessarily mean the same embodiment or example.

[0069] Although the embodiments of the present application have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, replacements and variations can be made to these embodiments without departing from the principles and purposes of the present application, and the scope of the present application is defined by the claims and their equivalents.

Claims

1. A battery thermal management system (1), characterized by, Comprise: a cooling module (100); a thermal management module (200) having a cooling liquid circulation flow path (210) connected to the cooling module (100) for heat exchange; wherein the cooling liquid circulation flow path (210) comprises: a main flow path (211); an upper-mounted branch flow path (212) connected to the main flow path (211), the upper-mounted branch flow path (212) being connected with an upper-mounted power battery (201) and an upper-mounted cooling valve (202) and connected to the cooling module (100), the upper-mounted cooling valve (202) being used for controlling the on-off of the upper-mounted branch flow path (212); a chassis branch flow path (213) connected to the main flow path (211) in parallel with the upper-mounted branch flow path (212), the chassis branch flow path (213) being connected with a chassis power battery (203) and a chassis cooling valve (204) and connected to the cooling module (100), the chassis cooling valve (204) being used for controlling the on-off of the chassis branch flow path.

2. The battery thermal management system (1) according to claim 1, the cooling module (100) having a refrigerant circulation flow path (101) connected with: a compressor (110) driving the circulation of refrigerant in the refrigerant circulation flow path (101); a first heat exchanger (120) communicating with the outside of the vehicle; a second heat exchanger (130) connected to the thermal management module (200) for heat exchange.

3. The battery thermal management system (1) according to claim 2, characterized in that The second heat exchanger (130) is configured with: a refrigerant inlet (131) and a refrigerant outlet (132) communicating inside the second heat exchanger (130) to communicate the refrigerant circulation flow path (101); a cooling liquid inlet (133) and a cooling liquid outlet (134) communicating inside the second heat exchanger (130) to communicate the cooling liquid circulation flow path (210).

4. The battery thermal management system (1) according to claim 2, characterized in that Further comprising: a heat dissipation fan (300) corresponding to the position of the first heat exchanger (120) for dissipating the heat of the first heat exchanger (120) to the outside of the vehicle.

5. The battery thermal management system (1) according to claim 2, characterized in that, The refrigerant circulation flow path (101) is further connected with an expansion valve (400) connected between the first heat exchanger (120) and the second heat exchanger (130) for controlling the refrigerant flow.

6. The battery thermal management system (1) according to claim 2, characterized in that The main flow path (211) is connected with: an expansion water kettle (500) for filling and storing cooling liquid; a water pump (600) connected to the expansion water kettle (500) and driving the circulation of cooling liquid along the refrigerant circulation flow path (101).

7. The battery thermal management system (1) according to claim 6, characterized in that The upper cooling valve (202) and the chassis cooling valve (204) are both two-way valves, and the water pump (600) drives the coolant to flow unidirectionally along the coolant circulation flow path (101).

8. A vehicle characterized by comprising: Comprising: a chassis; a battery thermal management system (1) according to any one of claims 1-7; an upper power battery (201), a coolant circulation flow path (210) of the battery thermal management system (1) selectively passes through the upper power battery (201), the upper power battery (201) is installed on the chassis and is used to supply power to an upper mechanism; a chassis power battery (203), the coolant circulation flow path (210) selectively passes through the chassis power battery (203), the chassis power battery (203) is installed on the chassis and is used to supply power to a vehicle power system.

9. A vehicle characterized by comprising: Comprising: a chassis; an upper frame; a battery thermal management system (1) according to any one of claims 1-7; an upper power battery (201), a coolant circulation flow path (210) of the battery thermal management system (1) selectively passes through the upper power battery (201), the upper power battery (201) is detachably installed on the upper frame and is used to supply power to an upper mechanism; a chassis power battery (203), the coolant circulation flow path (210) selectively passes through the chassis power battery (203), the chassis power battery (203) is installed on the chassis and is used to supply power to a vehicle power system.

10. The vehicle according to claim 8 or 9, characterized by The vehicle is a sanitation vehicle and comprises a cleaning mechanism, and the upper power battery (201) is used to supply power to the cleaning mechanism. The vehicle is a sanitation vehicle and comprises a cleaning mechanism, and the upper power battery (201) is used to supply power to the cleaning mechanism.

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