Battery cold plate assembly, thermal management system and vehicle of new energy vehicle

Abstract

The utility model provides a kind of battery cold plate assembly, thermal management system and vehicle of new energy vehicle, wherein, battery cold plate assembly includes battery cold plate, battery cooler and liquid cooling condenser set on battery cold plate.Battery cold plate is set in the battery pack of new energy vehicle, contact with the battery cell in battery pack, and battery cold plate is equipped with cooling liquid passage and refrigerant passage;Wherein, the cooling liquid inlet of cooling liquid passage is equipped with first control valve, and the refrigerant inlet of refrigerant passage is equipped with second control valve.Battery cooler, liquid cooling condenser and refrigerant passage between any two are equipped with connecting pipeline, and each connecting pipeline is equipped with respective regulating valve group in.The scheme integrates battery cooler and liquid cooling condenser on battery cold plate, reduces the use of external pipeline and support, saves space, can also heat or radiate for battery for different working conditions, with higher applicability.

Description

Technical Field

[0001] This utility model relates to the field of thermal management technology for new energy vehicles, and in particular to a battery cooling plate assembly and thermal management system for new energy vehicles. Background Technology

[0002] In the current booming development of new energy vehicles, the thermal management system of power batteries is of paramount importance, as its performance directly affects battery safety, lifespan, and overall vehicle performance. However, current power battery thermal management technologies still have many problems that urgently need to be solved.

[0003] In terms of cooling, existing power batteries mainly employ two separate cooling methods with a single cold source: refrigerant cooling and coolant cooling. Refrigerant cooling requires an external condenser to obtain a cold source. In practical applications, this method can lead to uneven temperature distribution, potentially causing performance differences in different parts of the battery pack and affecting the overall battery lifespan in the long run. Coolant cooling, on the other hand, relies on an external low-temperature radiator to obtain a cold source. Its significant drawback is its slow cooling rate. When the battery is operating under high load and generating a large amount of heat, it cannot effectively and promptly reduce the temperature to a suitable range, thus affecting the battery's efficiency and safety.

[0004] Regarding heating, existing methods typically include film heating and coolant heating. These methods rely on a single heat source and fail to fully and efficiently utilize other heat sources within the vehicle. In cold environments, heating methods using a single heat source may not be able to quickly heat the battery to a suitable operating temperature, leading to a decrease in battery charging and discharging performance and impacting the vehicle's range and power output.

[0005] Furthermore, for new energy vehicles, the use of external heat exchangers complicates the internal piping, resulting in low system integration. This not only increases manufacturing and maintenance costs but also occupies more space, hindering lightweight and compact vehicle design. Simultaneously, the complex piping increases the probability of malfunctions, reducing system reliability and stability.

[0006] In summary, existing power battery thermal management technologies have significant shortcomings in cooling, heating, and system integration, and there is an urgent need to develop more efficient and integrated thermal management solutions to meet the growing performance and safety requirements of new energy vehicles. Utility Model Content

[0007] The purpose of this invention is to solve the problems of low efficiency and low integration in the existing power battery thermal management technology.

[0008] To address the aforementioned problems, this utility model discloses a battery cooling plate assembly for new energy vehicles, comprising a battery cooling plate, a battery cooler, and a liquid-cooled condenser disposed on the battery cooling plate. The battery cooling plate is disposed within the battery pack of the new energy vehicle and in contact with the battery cells within the battery pack. The battery cooling plate is provided with a coolant channel and a refrigerant channel. A first control valve is provided at the coolant inlet of the coolant channel, and a second control valve is provided at the refrigerant inlet of the refrigerant channel. Furthermore, connecting pipes are provided between any two of the battery cooler, the liquid-cooled condenser, and the refrigerant channel, and each connecting pipe is equipped with its own regulating valve assembly.

[0009] By adopting the above solution, the battery cooler and liquid-cooled condenser are integrated into the battery cold plate, reducing the use of external piping and supports, saving space, and improving the structural compactness of the battery cold plate assembly. Simultaneously, this battery cold plate has both cooling and heating functions, capable of heating or cooling the battery under different operating conditions, thus exhibiting high applicability. Furthermore, the battery cold plate is in direct contact with the battery cell, resulting in a shorter heat conduction path and improved cooling or heating efficiency. The coolant and refrigerant channels work together to enhance the heat dissipation capacity of the battery cold plate, enabling it to handle cooling and heating needs under a wider range of operating conditions. All components are connected via connecting pipes, and each connecting pipe is equipped with its own regulating valve assembly, allowing each pipe to independently adjust its flow rate. When maintenance is required, only a portion of the connecting pipes and components need to be disassembled and replaced, resulting in high convenience and flexibility in maintenance.

[0010] According to another specific embodiment of the present invention, the battery cooling plate assembly for a new energy vehicle disclosed in this embodiment of the present invention has a coolant channel and / or refrigerant channel of the battery cooling plate connected to an external cold source; or, the refrigerant channel of the battery cooling plate connected to an external heat source; wherein, the external cold source includes a low-temperature radiator and an external condenser, and the external heat source includes an external heat exchanger; and the connecting pipeline includes a first connecting pipeline disposed between the battery cooler and the liquid-cooled condenser, a second connecting pipeline disposed between the battery cooler and the refrigerant channel, and a third connecting pipeline disposed between the liquid-cooled condenser and the refrigerant channel; and a first regulating valve is disposed in the first connecting pipeline, a second regulating valve is disposed in the second connecting pipeline, and a third regulating valve is disposed in the third connecting pipeline.

[0011] By adopting the above solution, multiple cold and heat sources of the vehicle can be coupled together. For different operating conditions, the optimal cold or heat source can be selected to cool or heat the battery, which can save energy while controlling the battery to operate in the optimal temperature range.

[0012] According to another specific embodiment of this utility model, the battery cooling plate assembly for a new energy vehicle disclosed in this embodiment, wherein, in battery cooling mode, the coolant channel of the battery cooling plate is connected to a low-temperature radiator, the first control valve is open, and the second control valve, the first regulating valve, the second regulating valve, and the third regulating valve are all closed; or the refrigerant channel is connected to an external condenser via the battery cooler, the second control valve and the second regulating valve are open, and the first control valve, the first regulating valve, and the third regulating valve are closed; or the coolant channel is connected to a low-temperature radiator, and the refrigerant channel is connected to an external condenser via the battery cooler, the first control valve, the second control valve, and the second regulating valve are open, and the first regulating valve and the third regulating valve are closed. Furthermore, in battery heating mode, the refrigerant channel of the battery cooling plate is connected to an external heat exchanger via a liquid-cooled condenser, the second control valve and the third regulating valve are open, and the first control valve, the first regulating valve, and the second regulating valve are closed.

[0013] By adopting the above solution, the switching between different cooling modes under different operating conditions can be achieved by controlling the opening and closing of the valve, which is highly convenient and can efficiently utilize the vehicle's energy.

[0014] According to another specific embodiment of the present invention, the battery cooling plate assembly for a new energy vehicle disclosed in this embodiment further includes a water-to-water heat exchanger; the water-to-water heat exchanger is connected to a battery cooler, a liquid-cooled condenser, and a coolant channel via coupling channels; wherein, the coupling channels include a first coupling channel disposed between the water-to-water heat exchanger and the battery cooler, a second coupling channel disposed between the water-to-water heat exchanger and the liquid-cooled condenser, and a third coupling channel disposed between the water-to-water heat exchanger and the coolant channel; and, a fourth regulating valve is disposed in the first coupling channel, a fifth regulating valve is disposed in the second coupling channel, and a sixth regulating valve is disposed in the third coupling channel.

[0015] According to another specific embodiment of the present invention, the battery cooling plate assembly for a new energy vehicle disclosed in this embodiment of the present invention, wherein, in the battery cooling mode, the low-temperature radiator is connected to the coolant channel, the external condenser is connected to the coolant channel via the battery cooler and the water-to-water heat exchanger, the first control valve, the second control valve, the fourth regulating valve and the sixth regulating valve are open, and the first regulating valve, the second regulating valve, the third regulating valve and the fifth regulating valve are closed; or, in the battery cooling mode, the low-temperature radiator is connected to the coolant channel, the external condenser is connected to the battery cooler, the battery cooler is connected to the refrigerant channel and the water-to-water heat exchanger, and the water-to-water heat exchanger is connected to the coolant channel, the first control valve, the second control valve, the second regulating valve, the fourth regulating valve and the sixth regulating valve are open, and the first regulating valve, the third regulating valve and the fifth regulating valve are closed.

[0016] By adopting the above solution and setting up a water-to-water heat exchanger, the battery cooling plate assembly can be applied to more vehicle models, improving the applicability of the battery cooling plate and enabling it to cool or heat the battery for more operating conditions.

[0017] According to another specific embodiment of this utility model, the battery cooling plate assembly for new energy vehicles disclosed in this embodiment of the utility model further includes an engine, a heating element, and a drive motor as external heat sources; wherein, in battery heating mode, the refrigerant channel of the battery cooling plate is connected to any one of the engine, heating element, and drive motor, or connected to an external heat exchanger and heating element, or connected to at least two of the external heat exchanger and heating element, engine, and drive motor; wherein, any one of the engine, heating element, and drive motor is connected to the coolant channel via a water-to-water heat exchanger, and the first control valve and the sixth regulating valve are open, while the second control valve, the first regulating valve, the second regulating valve, the third regulating valve, the fourth regulating valve, and the fifth regulating valve are closed; or, the external heat exchanger is connected to a liquid-cooled condenser for heating. The element is connected to a water-to-water heat exchanger, which is connected to a battery cooler. The battery cooler is connected to a liquid-cooled condenser, which is connected to a refrigerant passage. The first control valve, the second control valve, the first regulating valve, the fourth regulating valve, the fifth regulating valve, and the sixth regulating valve are open, while the second regulating valve and the third regulating valve are closed. Alternatively, an external heat exchanger is connected to both the liquid-cooled condenser and the battery cooler. At least two of the three components—the heating element, the engine, and the drive motor—are connected to the water-to-water heat exchanger. The water-to-water heat exchanger is connected to both the liquid-cooled condenser and the battery cooler. The water-to-water heat exchanger is connected to a coolant passage, and the battery cooler and the liquid-cooled condenser are connected to a refrigerant passage. The first control valve, the second control valve, the first regulating valve, the second regulating valve, the third regulating valve, the fourth regulating valve, the fifth regulating valve, and the sixth regulating valve are all open.

[0018] According to another specific embodiment of the present invention, the battery cold plate assembly for a new energy vehicle disclosed in this embodiment of the present invention has the battery cold plate disposed at the bottom of the battery cell; and both the coolant channel and the refrigerant channel include multiple media flow channels arranged side by side and connected to each other, with the media flow directions in any two adjacent and connected media flow channels being opposite; and the coolant channel and the refrigerant channel are alternately arranged on the plate surface of the battery cold plate; or, one of the coolant channel and the refrigerant channel is disposed on the plate surface of the battery cold plate and the other is disposed on the side surface of the battery cold plate.

[0019] By adopting the above scheme, placing the battery cooling plate at the bottom of the cell allows for direct and efficient heat absorption, reducing the overall temperature of the cell. Furthermore, the battery cooling plate at the bottom of the cell can be integrated with the battery pack casing, simplifying the structure and reducing space occupation. The reverse flow arrangement of the cooling medium maximizes the heat exchange area within a limited space, reducing space usage and improving cooling and heating efficiency.

[0020] According to another specific embodiment of the present invention, the battery cooling plate assembly for new energy vehicles disclosed in this embodiment of the present invention comprises an electronic switching valve or an electronic expansion valve, wherein the first control valve, the second control valve, the first regulating valve, the second regulating valve, the third regulating valve, the fourth regulating valve, the fifth regulating valve, and the sixth regulating valve are all electronic switching valves or electronic expansion valves; and the first control valve, the second control valve, the first regulating valve, the second regulating valve, the third regulating valve, the fourth regulating valve, the fifth regulating valve, and the sixth regulating valve are all connected to the thermal management system controller or the vehicle controller of the new energy vehicle.

[0021] Using the above solution, electronic on / off valves are employed, enabling rapid connection and disconnection of pipelines without the need for complex control logic, thus reducing system complexity. Electronic expansion valves are also used, allowing for continuous flow regulation and precise distribution of media flow, preventing energy waste.

[0022] The present invention discloses a thermal management system, including a battery cooling plate assembly for new energy vehicles as described in any of the above embodiments.

[0023] This utility model discloses a vehicle including a thermal management system as described in the above embodiments.

[0024] The beneficial effects of this utility model are:

[0025] The battery cold plate assembly provided in this application integrates the battery cooler and liquid-cooled condenser onto a single battery cold plate, reducing the use of external piping and supports, saving space, and improving the structural compactness of the battery cold plate assembly. Simultaneously, this battery cold plate has both cooling and heating functions, capable of heating or cooling the battery under different operating conditions, thus exhibiting high applicability. Furthermore, the battery cold plate is in direct contact with the battery cell, resulting in a shorter heat conduction path and improved cooling or heating efficiency. The coolant and refrigerant channels work together to enhance the heat dissipation capacity of the battery cold plate, enabling it to handle cooling and heating needs under a wider range of operating conditions. All components are connected via connecting pipes, and each connecting pipe is equipped with its own regulating valve assembly, allowing each pipe to independently adjust its flow rate. When maintenance is required, only a portion of the connecting pipes and components need to be disassembled and replaced, offering high convenience and flexibility in maintenance.

[0026] The thermal management system provided in this application, due to the aforementioned battery cooling plate assembly, enables the thermal management system to cool or heat the power battery under different operating conditions, thus exhibiting high applicability. Furthermore, the battery cooling plate directly contacts the battery cells, resulting in a shorter heat conduction path and improved cooling or heating efficiency. In addition, the battery cooling plate integrates a battery cooler and a liquid-cooled condenser, and is connected to each passage via pipelines. Each pipeline is equipped with its own regulating valve group, which not only reduces the use of external pipelines and supports, saving space, but also allows for independent flow adjustment of each pipeline, thus providing high maintenance convenience.

[0027] The vehicle provided in this application, having the thermal management system provided in the above embodiments, couples the cold source and heat source on the vehicle and integrates multiple heat exchangers on the battery cold plate, which simplifies the piping in the engine compartment and enables the power battery to operate in a better temperature range. Attached Figure Description

[0028] Figure 1 This is a connection diagram of the battery cold plate assembly provided in this embodiment of the utility model;

[0029] Figure 2 This is another connection diagram of the battery cold plate assembly provided in this embodiment of the utility model;

[0030] Figure 3 This is a schematic diagram of the structure of the battery cold plate assembly provided in this embodiment of the utility model;

[0031] Figure 4 This is another structural schematic diagram of the battery cold plate assembly provided in this embodiment of the utility model.

[0032] Explanation of reference numerals in the attached figures:

[0033] 1. Battery cold plate; 11. First connecting pipe; 111. First regulating valve; 12. Second connecting pipe; 121. Second regulating valve; 13. Third connecting pipe; 131. Third regulating valve; 14. First coupling channel; 141. Fourth regulating valve; 15. Second coupling channel; 151. Fifth regulating valve; 16. Third coupling channel; 161. Sixth regulating valve; 2. Battery cooler; 3. Liquid-cooled condenser; 4. Coolant channel; 41. First control valve; 5. Refrigerant channel; 51. Second control valve; 6. Water-to-water heat exchanger. Detailed Implementation

[0034] Example 1:

[0035] As described in the background section, existing power battery thermal management technologies suffer from low efficiency and low integration. Specifically, in the thermal management process, existing power batteries typically use either refrigerant or coolant for separate cooling. For refrigerant-only cooling, existing refrigerant cooling relies on an external condenser to provide the cold source. Although it can achieve rapid heat absorption through latent heat of phase change, the refrigerant flow channel is generally one or more long pipes from inlet to outlet, which easily leads to uneven temperature distribution within the battery module. For coolant-only cooling, heat dissipation generally requires coolant circulation. While this can maintain a balanced battery temperature, it relies on a low-temperature radiator for the cold source, and the heat exchange efficiency is limited by the ambient temperature, resulting in slow cooling and significant heat dissipation lag.

[0036] When the power battery needs to be heated, it relies on external heating elements (such as PTC heating film, liquid heater, etc.). In order to heat the battery quickly, all heating elements need to be turned on at the same time, which leads to heat energy waste and aggravates power consumption.

[0037] Furthermore, to meet the cooling and heating requirements of the power battery, a separate flow channel plate, heat exchanger, and multiple pumps and valves are typically required for the power battery. This results in complex and intersecting piping within the vehicle, occupying a large amount of space. Moreover, the separately configured cooling and heating piping requires independent coordination and control, which undoubtedly leads to a fragmented control strategy and response delay, reducing the reliability of the thermal management system and increasing energy consumption.

[0038] To address the aforementioned issues, this embodiment provides a battery cooling plate assembly for new energy vehicles. This assembly includes a battery cooling plate, and a battery cooler and a liquid-cooled condenser disposed on the battery cooling plate. By directly integrating the battery cooler and liquid-cooled condenser onto the battery cooling plate, no other space inside the vehicle is required. Furthermore, the cooling water and hot water generated by the battery cooler and liquid-cooled condenser can flow directly through the battery surface or internal battery channels, resulting in higher heat dissipation efficiency. In addition, the battery cooling plate is also provided with coolant channels and refrigerant channels. Connecting pipes are provided between any two of the battery cooler, liquid-cooled condenser, and refrigerant channels, and each connecting pipe is equipped with its own regulating valve assembly. By controlling the valve assemblies, the flow rate of coolant and refrigerant in the connecting pipes can be adjusted. Different cold or heat sources can be used for cooling or heating according to different operating conditions, improving thermal management efficiency.

[0039] Next, combined Figure 1 The battery cooling plate assembly for a new energy vehicle provided in this embodiment is described below. It should be noted that the new energy vehicle can be a pure electric (EV) vehicle, a hybrid (HEV) vehicle, a plug-in hybrid (PHEV) vehicle, or a range-extended electric (EREV) vehicle.

[0040] refer to Figure 1The battery cooling plate assembly includes a battery cooling plate 1, a battery cooler 2 disposed on the battery cooling plate 1, and a liquid-cooled condenser 3. The battery cooling plate 1 is located inside the battery pack of the new energy vehicle and is in contact with the battery cells within the battery pack. By introducing a liquid medium into its internal channels, the battery cooling plate 1 can quickly dissipate the heat generated during battery operation and provide heat when the battery requires heating, thereby ensuring that the battery operates within a suitable temperature range. The battery cooler 2 is a heat exchanger for heat exchange between the refrigerant and coolant, producing a low-temperature liquid through heat exchange. The liquid-cooled condenser 3 is also a heat exchanger for heat exchange between the refrigerant and coolant, producing a high-temperature liquid through heat exchange.

[0041] Specifically, refer to Figure 1 The battery cooler 2 and liquid-cooled condenser 3 can be integrated onto the battery cold plate 1 by welding to improve the stability of the connection between components; alternatively, they can be integrated onto the battery cold plate 1 through detachable connections such as threaded connections or snap-fit ​​connections, facilitating maintenance and replacement. More specifically, integrating the battery cooler 2 and liquid-cooled condenser 3 onto the battery cold plate 1 reduces the use of external piping and supports, saves space, and improves the structural compactness of the battery cold plate assembly. Simultaneously, the battery cold plate 1 has both cooling and heating functions, capable of heating or cooling the battery under different operating conditions, exhibiting high applicability. Furthermore, the battery cold plate 1 is in direct contact with the battery cell. After integrating the battery cooler 2 and liquid-cooled condenser 3, the low-temperature liquid generated by the battery cooler 2 and the high-temperature liquid generated by the liquid-cooled condenser 3 can directly contact the battery cell through the battery cold plate 1, resulting in a shorter heat conduction path and improved cooling or heating efficiency for the battery.

[0042] Furthermore, refer to Figure 1 The battery cold plate 1 is equipped with a coolant channel 4 and a refrigerant channel 5. The coolant channel 4 has a first control valve 41 at its coolant inlet, and the refrigerant channel 5 has a second control valve 51 at its refrigerant inlet. Specifically, the coolant channel 4 carries a coolant, typically made of water, ethylene glycol, etc., which has a low freezing point and a high boiling point, making it suitable for various operating conditions, especially extreme ones. The refrigerant channel 5 carries a refrigerant, typically made of Freon, ammonia, carbon dioxide, etc., which has a high heat absorption capacity and can rapidly cool the battery. The first control valve 41 and the second control valve 51 are respectively located at the coolant inlet and refrigerant inlet, allowing the flow rate of the coolant and refrigerant to be adjusted according to the actual temperature and operating status of the battery to achieve optimal cooling performance while avoiding energy waste caused by excessive heating or cooling. Furthermore, the coolant channel 4 and the refrigerant channel 5 work together to enhance the heat dissipation capacity of the battery cold plate 1, enabling it to meet the cooling and heating needs of more operating conditions.

[0043] Furthermore, refer to Figure 1A connecting pipe is installed between any two of the battery cooler 2, the liquid-cooled condenser 3, and the refrigerant passage 5, and each connecting pipe is equipped with its own regulating valve assembly. The connection through these pipes, and the presence of individual regulating valve assemblies in each pipe, allows for independent flow adjustment in each pipe. When maintenance is required, only a portion of the connecting pipes and components need to be disassembled and replaced, offering high convenience and flexibility in maintenance.

[0044] Furthermore, in this battery cold plate assembly, reference Figure 1 The coolant channel 4 and / or refrigerant channel 5 of the battery cold plate 1 are connected to an external cold source. Alternatively, the refrigerant channel 5 of the battery cold plate 1 is connected to an external heat source. The external cold source includes a low-temperature radiator and an external condenser, and the external heat source includes an external heat exchanger. Specifically, the external cold source provides cooling for the power battery, wherein the low-temperature radiator continuously provides a low temperature by dissipating heat to the external environment; the external condenser continuously provides a low temperature by releasing heat through a refrigerant phase change and exchanging heat with the outside air or cooling water. The external heat source provides heat for heating the power battery, wherein, in a heat pump system, the external condenser acts as a heat release end, transferring heat to the indoor air or water to provide a heat source. When the coolant channel 4 is connected to the external cold source, low-temperature coolant is introduced from the external cold source; when the refrigerant channel 5 is connected to the external cold source, low-temperature refrigerant is introduced from the external cold source. When the refrigerant channel 5 is connected to the external heat source, high-temperature coolant is introduced from the external heat source.

[0045] Furthermore, refer to Figure 1 The connecting pipelines include a first connecting pipeline 11 disposed between the battery cooler 2 and the liquid-cooled condenser 3, a second connecting pipeline 12 disposed between the battery cooler 2 and the refrigerant passage 5, and a third connecting pipeline 13 disposed between the liquid-cooled condenser 3 and the refrigerant passage 5. Furthermore, a first regulating valve 111 is disposed in the first connecting pipeline 11, a second regulating valve 121 is disposed in the second connecting pipeline 12, and a third regulating valve 131 is disposed in the third connecting pipeline 13.

[0046] Furthermore, in this battery cold plate assembly, reference Figure 1 When the battery cooling plate 1 is in battery cooling mode, it has the following three operating conditions:

[0047] The first scenario: The coolant passage 4 of the battery cold plate 1 is connected to the low-temperature radiator. The first control valve 41 is open, while the second control valve 51, the first regulating valve 111, the second regulating valve 121, and the third regulating valve 131 are all closed. This operating condition is suitable when the vehicle's power battery is at normal temperature during slow charging or driving. In this case, the power battery is cooled by coolant, with the external low-temperature radiator providing the cold source. The external low-temperature radiator is directly connected to the coolant passage 4 of the battery cold plate 1. The specific operating states of each part are shown in the table below:

[0048] First control valve Second control valve First regulating valve Second regulating valve Third regulating valve Battery cooler Open √ closure √ √ √ √ √ Coolant passage Refrigerant Channel First connecting pipe Second connecting pipe Third connecting pipe Liquid-cooled condenser Open √ closure √ √ √ √ √

[0049] The second scenario: Refrigerant passage 5 is connected to the external condenser via battery cooler 2. The second control valve 51 and the second regulating valve 121 are open, while the first control valve 41, the first regulating valve 111, and the third regulating valve 131 are closed. This operating condition also applies when the vehicle's power battery is at normal temperature during slow charging or driving. In actual driving, the specific cold source can be determined based on the operating cost of the external condenser or low-temperature radiator, or the thermal management needs of the passenger compartment. In this case, the power battery is cooled by refrigerant, with the external condenser providing the cold source. The external condenser is connected to the battery cooler 2 on the battery cold plate 1, and the refrigerant evaporated by the battery cooler 2 is connected to refrigerant passage 5. The specific operating states of each part are shown in the table below:

[0050]

[0051]

[0052] The third type: Coolant passage 4 is connected to the low-temperature radiator, and refrigerant passage 5 is connected to the external condenser via battery cooler 2. First control valve 41, second control valve 51, and second regulating valve 121 are all open, while first regulating valve 111 and third regulating valve 131 are closed. This operating condition is suitable when the vehicle battery is in a normal temperature fast charging or low-voltage fast charging state, and the battery temperature is relatively high. In this case, the power battery uses coolant cooling and partial refrigerant cooling, with the external low-temperature radiator and external condenser providing the cold source. The low-temperature radiator is connected to coolant passage 4 on battery cold plate 1, the external condenser is connected to battery cooler 2 on battery cold plate 1, and battery cooler 2 is connected to refrigerant passage 5 on battery cold plate 1. The specific operating states of each part are shown in the table below:

[0053] First control valve Second control valve First regulating valve Second regulating valve Third regulating valve Battery cooler Open √ √ √ √ closure √ √ Coolant passage Refrigerant Channel First connecting pipe Second connecting pipe Third connecting pipe Liquid-cooled condenser Open √ √ √ closure √ √ √

[0054] Furthermore, in this battery cold plate assembly, reference Figure 1 In battery heating mode, the refrigerant passage 5 of battery cold plate 1 is connected to an external heat exchanger via liquid-cooled condenser 3. The second control valve 51 and the third regulating valve 131 are open, while the first control valve 41, the first regulating valve 111, and the second regulating valve 121 are closed. Under this condition, a heat pump air conditioner heats the power battery, providing a heat source through the external heat exchanger. The external heat exchanger is connected to the liquid-cooled condenser 3 on battery cold plate 1, and the liquid-cooled condenser 3 is connected to the refrigerant passage 5 on battery cold plate 1. The specific operating states of each part are shown in the table below:

[0055]

[0056]

[0057] Furthermore, in this battery cooling plate assembly, the battery cooling plate 1 is located at the bottom of the battery cell. Since the bottom of the battery cell is the area where heat is concentrated within the battery pack, especially during fast charging or high-rate discharge, the bottom of the cell heats up quickly and accumulates heat. Placing the battery cooling plate 1 at the bottom of the cell allows for direct and efficient heat absorption, reducing the overall temperature of the cell. Moreover, the battery cooling plate 1 located at the bottom of the cell can be integrated with the battery pack casing, simplifying the structure and reducing space occupation. In addition, the battery cooling plate 1, located at the bottom of the cell, will not interfere with electrical components located at the top of the cell. When the temperature below the battery pack is high, the battery cooling plate 1 can prevent heat from diffusing into the cell. Of course, to improve the cooling effect, the battery cooling plate 1 can be placed around the cell, such as on the top and sides of the cell.

[0058] Furthermore, in this battery cold plate assembly, both the coolant channel 4 and the refrigerant channel 5 include multiple media flow channels arranged side-by-side and interconnected, with the flow directions of the media in any two adjacent and interconnected media flow channels being opposite. This reverse flow arrangement maximizes the heat exchange area within a limited space, reducing space occupation and improving cooling and heating efficiency. Moreover, the reverse flow method results in more uniform heat distribution, preventing damage to the pipe materials due to localized temperature differences and enhancing system stability.

[0059] Furthermore, in this battery cold plate assembly, the coolant channel 4 and the refrigerant channel 5 can be arranged in the following three different ways:

[0060] In the first configuration, coolant channels 4 and refrigerant channels 5 are alternately arranged on the surface of the battery cold plate 1. In this configuration, the contact areas of coolant channels 4 and refrigerant channels 5 are approximately equal, allowing for simultaneous and efficient heat transfer.

[0061] The second method involves placing the coolant channel 4 on the surface of the battery cold plate 1 and the refrigerant channel 5 on the side of the battery cold plate 1. This method achieves efficient heat conduction by having the coolant directly contact the bottom of the battery cell, while the refrigerant channel on the side assists in cooling. This reduces the need for a large amount of refrigerant and lowers the overall cost.

[0062] The third method involves placing the refrigerant channel 5 on the surface of the battery cold plate 1 and the coolant channel 4 on the side of the battery cold plate 1. This method allows the refrigerant to directly contact the bottom of the battery cell, enabling rapid and efficient heat absorption, making it suitable for summer or high-temperature operating conditions. It should be noted that... Figure 1 The coolant passage 4 and refrigerant passage 5 in the diagram are for illustrative purposes only and do not represent that their arrangement is as shown in the diagram.

[0063] Furthermore, in this battery cold plate assembly, reference Figure 2 The first control valve 41, the second control valve 51, the first regulating valve 111, the second regulating valve 121, and the third regulating valve 131 are all electronic switching valves or electronic expansion valves. Using electronic switching valves allows for rapid on / off switching of the pipeline without complex control logic, reducing system complexity. Using electronic expansion valves enables continuous flow regulation, facilitating precise distribution of medium flow and avoiding energy waste. In this embodiment, all of the above valves can be set as switching valves, all of the above valves can be set as expansion valves, or some can be set as switching valves and some as expansion valves. It should be understood that this embodiment only schematically lists some operating conditions; the opening and closing of the above valves can be determined according to actual needs. For example, if the battery cooler 2 and the liquid-cooled condenser 3 cannot work simultaneously, the first regulating valve 111 will always be closed; if both need to work simultaneously, the first regulating valve 111 can be opened. When no coolant is introduced from an external cold or heat source, the first control valve 41 is closed; when coolant needs to be introduced from an external cold source, the first control valve 41 is open. When no refrigerant is introduced from an external cold source, the second control valve 51 is closed; when refrigerant needs to be introduced from an external cold source, the second control valve 51 is open. When the battery cooler 2 is connected to the coolant passage 4, the second regulating valve 121 is open; when the battery cooler 2 is not connected to the coolant passage 4, the second regulating valve 121 is closed. When the liquid-cooled condenser 3 is connected to the refrigerant passage 5, the third regulating valve 131 is open; when the liquid-cooled condenser 3 is not connected to the refrigerant passage 5, the third regulating valve 131 is closed.

[0064] Furthermore, in this battery cold plate assembly, reference Figure 2 The first control valve 41, the second control valve 51, the first regulating valve 111, the second regulating valve 121, and the third regulating valve 131 are all connected to the thermal management system controller or the vehicle controller of the new energy vehicle. This structure allows for real-time adjustment of the valve openings via the controller, thereby dynamically distributing the flow of coolant or refrigerant to ensure the battery operates within its optimal temperature range. Furthermore, it can work in conjunction with the vehicle's air conditioning system and motor cooling system, improving the overall vehicle energy efficiency.

[0065] Example 2:

[0066] This embodiment provides a battery cooling plate assembly, which is only applicable to hybrid (HEV) vehicles, plug-in hybrid (PHEV) vehicles, and range-extended electric (EREV) vehicles, but not to pure electric (EV) vehicles.

[0067] refer to Figure 2 The difference between this battery cooling plate assembly and Embodiment 1 is that the battery cooling plate 1 also includes a water-to-water heat exchanger 6. The water-to-water heat exchanger 6 can be connected to power sources such as motors and engines to perform comprehensive thermal management of the thermal power battery. Further, refer to... Figure 3and Figure 4 In this battery cold plate assembly, the battery cooler 2, liquid-cooled condenser 3, and water-to-water heat exchanger 6 are all integrated at one end of the battery cold plate 1 and are close to each other, thus saving on piping layout. Furthermore, the first control valve 41 and the second control valve 51 are also located at one end of the battery cold plate 1, facilitating the introduction of coolant and refrigerant from the outside and shortening the path between the coolant / refrigerant and the heat exchanger.

[0068] Specifically, in this embodiment, the battery cold plate assembly includes a water-to-water heat exchanger 6 connected to the battery cooler 2, the liquid-cooled condenser 3, and the coolant channel 4 via coupling channels. The coupling channels include a first coupling channel 14 between the water-to-water heat exchanger 6 and the battery cooler 2, a second coupling channel 15 between the water-to-water heat exchanger 6 and the liquid-cooled condenser 3, and a third coupling channel 16 between the water-to-water heat exchanger 6 and the coolant channel 4. Furthermore, a fourth regulating valve 141 is installed in the first coupling channel 14, a fifth regulating valve 151 in the second coupling channel 15, and a sixth regulating valve 161 in the third coupling channel 16. The water-to-water heat exchanger 6 is a heat exchanger for heat exchange between high-temperature water and low-temperature water. With this structure, the water-to-water heat exchanger 6 is centered on the battery cooler 2, the liquid-cooled condenser 3, and the coolant channel 4, forming a closed-loop coolant heat exchange network that facilitates heat exchange. Furthermore, each coupling channel is equipped with a regulating valve, which can precisely control the liquid flow rate and adjust the heat transfer efficiency between the components.

[0069] Furthermore, in this battery cold plate assembly, reference Figure 2 In battery cooling mode, the low-temperature radiator of battery cold plate 1 is connected to the coolant channel 4, the external condenser is connected to the coolant channel 4 via battery cooler 2 and water-to-water heat exchanger 6, the first control valve 41, the second control valve 51, the fourth regulating valve 141, and the sixth regulating valve 161 are open, and the first regulating valve 111, the second regulating valve 121, the third regulating valve 131, and the fifth regulating valve 151 are closed. This operating condition is suitable for power batteries in normal temperature fast charging or low-voltage fast charging states. When the power battery temperature is high, the power battery uses coolant cooling combined with partial refrigerant cooling, with the cold source provided by the low-temperature radiator and the external condenser. The low-temperature radiator is connected to the coolant channel 4 on battery cold plate 1; the external condenser is connected to battery cooler 2; battery cooler 2 is connected to water-to-water heat exchanger 6; and water-to-water heat exchanger 6 is connected to coolant channel 4. The specific operating states of each part are shown in the table below:

[0070]

[0071]

[0072] Furthermore, in this battery cold plate assembly, reference Figure 2 In battery cooling mode, the low-temperature radiator 1 is connected to the coolant channel 4, the external condenser is connected to the battery cooler 2, the battery cooler 2 is connected to the refrigerant channel 5, and the water-to-water heat exchanger 6 is connected to the coolant channel 4. The first control valve 41, the second control valve 51, the second regulating valve 121, the fourth regulating valve 141, and the sixth regulating valve 161 are open, while the first regulating valve 111, the third regulating valve 131, and the fifth regulating valve 151 are closed. This operating condition is suitable for power batteries operating under ultra-high voltage fast charging or extreme high-temperature weather conditions, where the power battery has high heat and requires cooling using both coolant and refrigerant. The low-temperature radiator and the external condenser provide the cold source. The low-temperature radiator is connected to the coolant channel 4, the external condenser is connected to the battery cooler 2, the battery cooler 2 is connected to the refrigerant channel 5, the battery cooler 2 is connected to the water-to-water heat exchanger 6, and the water-to-water heat exchanger 6 is connected to the coolant channel 4. The specific operating states of each part are shown in the table below.

[0073] First control valve Second control valve First regulating valve Second regulating valve Third regulating valve Battery cooler Open √ √ √ √ closure √ √ Coolant passage Refrigerant Channel First connecting pipe Second connecting pipe Third connecting pipe Liquid-cooled condenser Open √ √ √ closure √ √ √ First coupling channel Second coupling channel Third coupling channel Fourth regulating valve Fifth regulating valve Sixth regulating valve Open √ √ √ √ closure √ √ Water-to-water heat exchanger Open √ closure

[0074] Furthermore, in this battery cold plate assembly, reference Figure 2 The external heat source also includes an engine, a heating element, and a drive motor. In the battery heating mode, the refrigerant channel 5 of the battery cold plate 1 is connected to any one of the engine, the heating element, and the drive motor, or to an external heat exchanger and the heating element, or to at least two of the external heat exchanger and the heating element, the engine, and the drive motor.

[0075] Specifically, in battery heating mode, the following operating conditions apply:

[0076] The first type: The refrigerant passage 5 can be connected separately to the engine, using the engine's hot water to heat the battery. The engine is connected to the water-to-water heat exchanger 6, and the water-to-water heat exchanger 6 is connected to the coolant passage 4.

[0077] The second type: The refrigerant channel 5 is connected to the heating element (water PTC), which provides a heat source to heat the battery. The heating element is connected to the water-to-water heat exchanger 6, and the water-to-water heat exchanger 6 is connected to the coolant channel 4.

[0078] The third type: The refrigerant channel 5 is connected to the drive motor, and the heat source is provided to heat the battery by the motor being locked. The drive motor is connected to the water-to-water heat exchanger 6, and the water-to-water heat exchanger 6 is connected to the coolant channel 4.

[0079] The fourth method: The refrigerant channel 5 uses a combination of heat pump air conditioning and water PTC to heat the battery. The heat source is provided by an external heat exchanger, which is connected to the liquid-cooled condenser 3. The heating element starts with low power consumption and is connected to the water-to-water heat exchanger 6. The water-to-water heat exchanger 6 is connected to the battery cooler 2. After heating the refrigerant, the battery cooler 2 is connected to the liquid-cooled condenser 3, and the liquid-cooled condenser 3 is connected to the refrigerant channel 5.

[0080] Fifth type: Refrigerant channel 5 is connected to an external heat exchanger and heating element, which provide the heat source. The external heat exchanger is connected to the liquid-cooled condenser 3, and the heating element is connected to the water-to-water heat exchanger 6, which is also connected to the coolant channel 4. The water-to-water heat exchanger 6 is connected to the battery cooler 2. After heating the refrigerant, the battery cooler 2 is connected to the liquid-cooled condenser 3, and the liquid-cooled condenser 3 is connected to the refrigerant channel 5.

[0081] The sixth type: Refrigerant passage 5 is connected to an external heat exchanger and the engine, with heat source provided by the external heat exchanger and engine hot water. The external heat exchanger is connected to the liquid-cooled condenser 3, the engine is connected to the water-to-water heat exchanger 6, and the water-to-water heat exchanger 6 is connected to the coolant passage 4. The water-to-water heat exchanger 6 is connected to the battery cooler 2, and after heating the refrigerant, the battery cooler 2 is connected to the liquid-cooled condenser 3, and the liquid-cooled condenser 3 is connected to the refrigerant passage 5.

[0082] The seventh type: Refrigerant channel 5 is connected to an external heat exchanger and a drive motor, which provide the heat source. The external heat exchanger is connected to the liquid-cooled condenser 3, and the drive motor is connected to the water-to-water heat exchanger 6, which is also connected to the coolant channel 4. The water-to-water heat exchanger 6 is connected to the battery cooler 2. After heating the refrigerant, the battery cooler 2 is connected to the liquid-cooled condenser 3, and the liquid-cooled condenser 3 is connected to the refrigerant channel 5.

[0083] The eighth type: Refrigerant passage 5 is connected to an external heat exchanger, heating element, and engine, with the heat source provided by these three. The external heat exchanger is connected to the liquid-cooled condenser 3, and both the heating element and engine are connected to the water-to-water heat exchanger 6, which is also connected to the coolant passage 4. The water-to-water heat exchanger 6 is connected to the battery cooler 2, which heats the refrigerant. The battery cooler 2 is then connected to the liquid-cooled condenser 3, which in turn is connected to the refrigerant passage 5.

[0084] Ninth type: Refrigerant passage 5 is connected to an external heat exchanger, heating element, and engine, with the heat source provided by these three. The external heat exchanger is connected to the liquid-cooled condenser 3, and the heating element and engine are both connected to the water-to-water heat exchanger 6, which is also connected to the coolant passage 4. The water-to-water heat exchanger 6 is connected to the battery cooler 2, which heats the refrigerant. The battery cooler 2 is then connected to the liquid-cooled condenser 3, which in turn is connected to the refrigerant passage 5.

[0085] The tenth configuration: Refrigerant passage 5 is connected to an external heat exchanger, engine, and drive motor, with these three providing the heat source. The external heat exchanger is connected to the liquid-cooled condenser 3. The engine and drive motor are both connected to the water-to-water heat exchanger 6, which is also connected to the coolant passage 4. The water-to-water heat exchanger 6 is connected to the battery cooler 2. After heating the refrigerant, the battery cooler 2 is connected to the liquid-cooled condenser 3, which in turn is connected to the refrigerant passage 5.

[0086] Eleventh type: Refrigerant passage 5 is connected to the external heat exchanger, heating element, engine, and drive motor, with all four providing the heat source. The external heat exchanger is connected to the liquid-cooled condenser 3. The heating element, engine, and drive motor are all connected to the water-to-water heat exchanger 6, which is also connected to the coolant passage 4. The water-to-water heat exchanger 6 is connected to the battery cooler 2. After heating the refrigerant, the battery cooler 2 is connected to the liquid-cooled condenser 3, which in turn is connected to the refrigerant passage 5. The following provides a description of the operating status of each part under the above conditions:

[0087] In the first, second, and third operating conditions, any one of the engine, heating element, or drive motor is connected to the coolant passage 4 via the water-to-water heat exchanger 6, and the first control valve 41 and the sixth regulating valve 161 are open, while the second control valve 51, the first regulating valve 111, the second regulating valve 121, the third regulating valve 131, the fourth regulating valve 141, and the fifth regulating valve 151 are closed. See the table below for details:

[0088]

[0089]

[0090] In the fourth operating condition, the external heat exchanger is connected to the liquid-cooled condenser 3, the heating element is connected to the water-to-water heat exchanger 6, the water-to-water heat exchanger 6 is connected to the battery cooler 2, the battery cooler 2 is connected to the liquid-cooled condenser 3, the liquid-cooled condenser 3 is connected to the refrigerant passage 5, and the first control valve 41, the second control valve 51, the first regulating valve 111, the fourth regulating valve 141, the fifth regulating valve 151, and the sixth regulating valve 161 are open, while the second regulating valve 121 and the third regulating valve 131 are closed. See the table below for details:

[0091] First control valve Second control valve First regulating valve Second regulating valve Third regulating valve Battery cooler Open √ √ √ √ closure √ √ Coolant passage Refrigerant Channel First connecting pipe Second connecting pipe Third connecting pipe Liquid-cooled condenser Open √ √ √ √ √ closure √ First coupling channel Second coupling channel Third coupling channel Fourth regulating valve Fifth regulating valve Sixth regulating valve Open √ √ √ √ √ √ closure Water-to-water heat exchanger Open √ closure

[0092] In operating conditions 5 through 11, the external heat exchanger is connected to the liquid-cooled condenser 3 and the battery cooler 2, respectively. At least two of the heating element, engine, and drive motor are connected to the water-to-water heat exchanger 6, which is also connected to the liquid-cooled condenser 3 and the battery cooler 2. The water-to-water heat exchanger 6 is connected to the coolant passage 4, and the battery cooler 2 and liquid-cooled condenser 3 are connected to the refrigerant passage 5. The first control valve 41, the second control valve 42, the first regulating valve 111, the second regulating valve 121, the third regulating valve 131, the fourth regulating valve 141, the fifth regulating valve 151, and the sixth regulating valve 161 are all open. See the table below for details:

[0093] First control valve Second control valve First regulating valve Second regulating valve Third regulating valve Battery cooler Open √ √ √ √ √ √ closure Coolant passage Refrigerant Channel First connecting pipe Second connecting pipe Third connecting pipe Liquid-cooled condenser Open √ √ √ √ √ √ closure First coupling channel Second coupling channel Third coupling channel Fourth regulating valve Fifth regulating valve Sixth regulating valve Open √ √ √ √ √ √ closure Water-to-water heat exchanger Open √ closure

[0094] It should be noted that in this embodiment, the fourth regulating valve 141, the fifth regulating valve 151, and the sixth regulating valve 161 are all electronic switching valves or electronic expansion valves, and are all connected to the thermal management system controller or the vehicle controller of the new energy vehicle.

[0095] Example 3:

[0096] Based on the battery cooling plate assembly described in the foregoing embodiments, this embodiment also provides a thermal management system, including the battery cooling plate assembly for new energy vehicles as described in Embodiments 1 and 2. This thermal management system may further include a passenger compartment air conditioning circuit, and when the vehicle is a hybrid model, it may also include an engine cooling circuit. By cooperating with the passenger compartment and the power source, multiple cooling and heating methods can be provided for the power battery, and multiple cold and heat sources on the vehicle can be coupled, reducing overall energy consumption while allowing the power battery to operate within an optimal temperature range.

[0097] The thermal management system provided in this embodiment, due to the aforementioned battery cooling plate assembly, enables the thermal management system to cool or heat the power battery under different operating conditions, thus exhibiting high applicability. Furthermore, the battery cooling plate directly contacts the battery cells, resulting in a shorter heat conduction path and improved cooling or heating efficiency. In addition, the battery cooling plate integrates a battery cooler and a liquid-cooled condenser, and is connected to each passage via pipelines. Each pipeline is equipped with its own regulating valve group, which not only reduces the use of external pipelines and supports, saving space, but also allows for independent flow adjustment of each pipeline, thus providing high maintenance convenience.

[0098] Example 4:

[0099] Based on the thermal management system described in the foregoing embodiments, this embodiment also provides a vehicle including the thermal management system described in Embodiment 3.

[0100] The vehicle provided in this embodiment has a thermal management system provided in the above embodiment, which couples the cold source and heat source on the vehicle and integrates multiple heat exchangers on the battery cold plate, simplifying the piping in the engine compartment and enabling the power battery to operate in a better temperature range.

[0101] Although the present invention has been illustrated and described with reference to certain preferred embodiments, those skilled in the art should understand that the above description is a further detailed explanation of the present invention in conjunction with specific embodiments, and should not be construed as limiting the specific implementation of the present invention to these descriptions. Those skilled in the art can make various changes in form and detail, including some simple deductions or substitutions, without departing from the spirit and scope of the present invention.

Claims

1. A battery cold plate assembly for a new energy vehicle, characterized in that, Includes a battery cold plate, a battery cooler disposed on the battery cold plate, and a liquid-cooled condenser; wherein The battery cooling plate is disposed within the battery pack of the new energy vehicle and in contact with the battery cells within the battery pack. The battery cooling plate is provided with a coolant channel and a refrigerant channel; wherein, a first control valve is provided at the coolant inlet of the coolant channel, and a second control valve is provided at the refrigerant inlet of the refrigerant channel. A connecting pipe is provided between any two of the battery cooler, the liquid-cooled condenser, and the refrigerant channel, and each connecting pipe is provided with its own regulating valve group.

2. The battery cold plate assembly of claim 1, wherein, The coolant channel and / or refrigerant channel of the battery cold plate are connected to an external cold source; or, the refrigerant channel of the battery cold plate is connected to an external heat source; wherein The external cold source includes a low-temperature radiator and an external condenser; the external heat source includes an external heat exchanger. The connecting pipeline includes a first connecting pipeline disposed between the battery cooler and the liquid-cooled condenser, a second connecting pipeline disposed between the battery cooler and the refrigerant channel, and a third connecting pipeline disposed between the liquid-cooled condenser and the refrigerant channel; and The first connecting pipeline is provided with a first regulating valve, the second connecting pipeline is provided with a second regulating valve, and the third connecting pipeline is provided with a third regulating valve.

3. The battery cold plate assembly of claim 2, wherein, in In battery cooling mode, the coolant channel of the battery cold plate is connected to the low-temperature radiator, the first control valve is open, and the second control valve, the first regulating valve, the second regulating valve, and the third regulating valve are all closed; or the refrigerant channel is connected to the external condenser via the battery cooler, the second control valve and the second regulating valve are open, and the first control valve, the first regulating valve, and the third regulating valve are closed; or the coolant channel is connected to the low-temperature radiator, and the refrigerant channel is connected to the external condenser via the battery cooler, the first control valve, the second control valve, and the second regulating valve are open, and the first regulating valve and the third regulating valve are closed; and When the battery cold plate is in battery heating mode, the refrigerant channel of the battery cold plate is connected to the external heat exchanger via the liquid-cooled condenser, the second control valve and the third regulating valve are open, and the first control valve, the first regulating valve and the second regulating valve are closed.

4. The battery cold plate assembly of claim 3, wherein, The battery cooling plate also includes a water-to-water heat exchanger; The water-to-water heat exchanger is connected to the battery cooler, the liquid-cooled condenser, and the coolant channel via coupling channels, respectively. in The coupling channels include a first coupling channel disposed between the water-to-water heat exchanger and the battery cooler, a second coupling channel disposed between the water-to-water heat exchanger and the liquid-cooled condenser, and a third coupling channel disposed between the water-to-water heat exchanger and the coolant channel; and A fourth regulating valve is provided in the first coupling channel, a fifth regulating valve is provided in the second coupling channel, and a sixth regulating valve is provided in the third coupling channel.

5. The battery cold plate assembly of claim 4, wherein, in In the battery cooling mode, the low-temperature radiator is connected to the coolant channel, the external condenser is connected to the coolant channel via the battery cooler and the water-to-water heat exchanger, the first control valve, the second control valve, the fourth regulating valve, and the sixth regulating valve are open, and the first regulating valve, the second regulating valve, the third regulating valve, and the fifth regulating valve are closed; or In the battery cooling mode, the low-temperature radiator is connected to the coolant channel, the external condenser is connected to the battery cooler, the battery cooler is connected to the refrigerant channel, and the water-to-water heat exchanger is connected to the coolant channel. The first control valve, the second control valve, the second regulating valve, the fourth regulating valve, and the sixth regulating valve are open, while the first regulating valve, the third regulating valve, and the fifth regulating valve are closed.

6. The battery cold plate assembly of claim 5, wherein, The external heat source also includes an engine, heating elements, and a drive motor; wherein In the battery heating mode, the refrigerant channel of the battery cold plate is connected to any one of the engine, the heating element, and the drive motor, or to the external heat exchanger and the heating element, or to at least two of the external heat exchanger, the heating element, the engine, and the drive motor. in Any one of the engine, the heating element, and the drive motor is connected to the coolant passage via the water-to-water heat exchanger, and the first control valve and the sixth regulating valve are open, while the second control valve, the first regulating valve, the second regulating valve, the third regulating valve, the fourth regulating valve, and the fifth regulating valve are closed; or The external heat exchanger is connected to the liquid-cooled condenser, the heating element is connected to the water-to-water heat exchanger, the water-to-water heat exchanger is connected to the battery cooler, the battery cooler is connected to the liquid-cooled condenser, the liquid-cooled condenser is connected to the refrigerant channel, and the first control valve, the second control valve, the first regulating valve, the fourth regulating valve, the fifth regulating valve, and the sixth regulating valve are open, while the second regulating valve and the third regulating valve are closed; or The external heat exchanger is connected to the liquid-cooled condenser and the battery cooler respectively. At least two of the heating element, the engine, and the drive motor are connected to the water-to-water heat exchanger. The water-to-water heat exchanger is connected to the liquid-cooled condenser and the battery cooler respectively. The water-to-water heat exchanger is connected to the coolant channel. The battery cooler and the liquid-cooled condenser are connected to the refrigerant channel. The first control valve, the second control valve, the first regulating valve, the second regulating valve, the third regulating valve, the fourth regulating valve, the fifth regulating valve, and the sixth regulating valve are all open.

7. The battery cold plate assembly of claim 6, wherein, The battery cooling plate is disposed at the bottom of the battery cell; and Both the coolant passage and the refrigerant passage include multiple media flow channels arranged side by side and interconnected with each other, wherein the flow directions of the media in any two adjacent and interconnected media flow channels are opposite; and The coolant channels and the refrigerant channels are alternately arranged on the surface of the battery cold plate; or One of the coolant channel and the refrigerant channel is located on the surface of the battery cold plate, and the other is located on the side of the battery cold plate.

8. The battery cold plate assembly of claim 7, wherein, The first control valve, the second control valve, the first regulating valve, the second regulating valve, the third regulating valve, the fourth regulating valve, the fifth regulating valve, and the sixth regulating valve are all electronic switching valves or electronic expansion valves; and The first control valve, the second control valve, the first regulating valve, the second regulating valve, the third regulating valve, the fourth regulating valve, the fifth regulating valve, and the sixth regulating valve are all connected to the thermal management system controller or the vehicle controller of the new energy vehicle.

9. A thermal management system, characterized by, Including the battery cooling plate assembly for new energy vehicles as described in any one of claims 1-8.

10. A vehicle characterized by comprising: Includes the thermal management system as described in claim 9.

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