A battery pack heat dissipation system

Abstract

The utility model discloses a battery pack heat dissipation system relates to battery cooling technical field, including box body and setting in the heat dissipation subassembly of box body, battery module, the heat dissipation subassembly includes setting at least one heat dissipation unit, the heat dissipation unit sets up in the both sides of the electric core of battery module, is used for cooling for the electric core, the heat dissipation pipe of heat dissipation unit is used for the cooling medium for the battery module heat dissipation is passed in, the heat dissipation pipe is the serpentine heat dissipation pipe. Through setting the heat dissipation unit of heat dissipation subassembly in the both sides of electric core, can make full use of the contact area of electric core both sides and realize heat exchange, solved the problem of the big temperature difference of electric core in bottom cooling scheme, improved the heat exchange efficiency, the serpentine heat dissipation pipe is used simultaneously, can further increase the contact area with electric core, improved the heat exchange efficiency, reduced the energy consumption, reduced the spare part to realize light weight simultaneously, improved the reliability of structure, further reduced the cost.

Description

Technical Field

[0001] This utility model relates to the field of battery cooling technology, specifically to a battery pack heat dissipation system. Background Technology

[0002] With the rapid development of new energy vehicles and energy storage systems, lithium-ion batteries have become the mainstream choice due to their advantages such as high energy density and long cycle life. However, batteries generate a large amount of heat during charging and discharging. If this heat cannot be dissipated in time, it will lead to uneven battery pack temperature, performance degradation, and even thermal runaway. Therefore, an efficient thermal management system is crucial to ensuring battery safety, lifespan, and performance.

[0003] Currently, battery cooling methods mainly include air cooling, liquid cooling, and phase change material cooling. Among them, liquid cooling has gradually become the mainstream in the energy storage market due to its strong temperature management capabilities, high energy density, and low maintenance costs.

[0004] Currently, the most common liquid cooling method for battery packs is bottom cooling, which involves placing a liquid cooling plate with coolant flowing under the battery cells to reduce their temperature through heat absorption and flow. However, bottom cooling has a long heat conduction path, requiring heat to be conducted longitudinally from the top of the cell through the cell terminals and the battery pack casing to the bottom. This results in significant vertical thermal resistance and leads to a large temperature difference between the top and bottom of the cell. Excessive cell temperature can cause uneven heat distribution, leading to localized hot spots during long-term charging and discharging. Overheating may even cause thermal runaway and safety issues. Secondly, because the bottom area of ​​the cell is smaller than the sides, and bottom cooling only exchanges heat with the bottom of the cell, the smaller contact area results in lower heat exchange efficiency in the battery pack. The large temperature difference between the top and bottom of the cell increases the rate of capacity decay, shortens battery life, and ultimately degrades overall performance. Furthermore, the large temperature difference between the top and bottom of the cell also causes inconsistent thermal expansion between the top and bottom, resulting in different mechanical stresses between the cell and contact components. Excessive local stress can cause mechanical damage to the cell or other components, thus affecting the normal operation of the system.

[0005] In the heat dissipation structure of bottom cooling, single or double-layer cold plates are usually used. To reduce thermal resistance, the bottom cooling plate usually needs to be thinned. However, the battery pack usually needs to withstand vibration and impact. To avoid the risk of deformation under the above conditions, it is necessary to add reinforcing ribs for mechanical strength. Some cold plates have built-in turbulence blocks to enhance the turbulence of the coolant, thereby improving the heat exchange efficiency. Utility Model Content

[0006] The purpose of this invention is to provide a battery pack heat dissipation system that increases the contact area between the cooling medium and the battery cell, has a simple structure, improves heat exchange efficiency, and reduces energy consumption.

[0007] To solve the above-mentioned technical problems, this utility model provides a battery pack heat dissipation system, including a housing, a heat dissipation component disposed in the housing, and a battery module. The heat dissipation component includes at least one heat dissipation unit disposed on both sides of the battery cell of the battery module for cooling the battery cell. The heat dissipation pipe of the heat dissipation unit is used to introduce a cooling medium to dissipate heat from the battery module. The heat dissipation pipe is a serpentine heat dissipation pipe.

[0008] It also includes a horizontal manifold disposed at the end of the heat dissipation unit, the other end of the horizontal manifold being connected to an adjacent heat dissipation unit or a water outlet circuit, the output end of the water outlet circuit being connected to the output end of the heat dissipation component, and the height of the horizontal manifold being greater than or equal to the height of the heat dissipation unit and the water outlet circuit.

[0009] The serpentine heat dissipation unit is either a serpentine heat dissipation unit extending along the length of the battery cell in the battery module, or a serpentine heat dissipation unit extending along the height of the battery cell in the battery module.

[0010] The serpentine heat dissipation unit includes at least one periodic heat dissipation unit. The shape of the periodic heat dissipation unit is a sawtooth wave, a sine wave, or a square wave. Multiple periodic heat dissipation units of the same serpentine heat dissipation unit have the same shape, the same amplitude, and the same period length.

[0011] The device also includes a temperature acquisition unit installed in the housing. The temperature acquisition unit includes a first temperature sensor installed in the battery module and a second temperature sensor installed in the heat dissipation assembly. The first temperature sensor is used to detect the cell temperature of the battery module, and the second temperature sensor is used to detect the medium temperature at the medium inlet and medium outlet of the heat dissipation assembly.

[0012] It also includes a temperature control unit installed in the enclosure, which is connected to the temperature acquisition unit and is used to control the medium input temperature and input flow rate of the heat dissipation component.

[0013] The enclosure includes an enclosure frame, a battery module mounting beam, a water inlet, a water outlet, and a temperature control unit mounting plate. The battery module mounting beam is located inside the enclosure frame and parallel to the short side of the enclosure frame. The temperature control unit mounting plate, the water inlet, and the water outlet are located on the side of the enclosure frame with the short side on the side. The water inlet and the water outlet are located below the temperature control unit mounting plate.

[0014] It also includes sealing rings installed at the water inlet and the water outlet for fixing and sealing the water supply pipes of the heat dissipation assembly.

[0015] It also includes a communication module located on the short side of the enclosure frame. The communication module is connected to the temperature control unit. The communication module can be a Bluetooth module, a Zigbee module, a CAN communication module, a 4G module, or a 5G module.

[0016] The enclosure is either a sheet metal enclosure or a one-piece molded enclosure.

[0017] The battery pack heat dissipation system provided in this embodiment of the invention has the following advantages compared with the prior art:

[0018] The battery pack heat dissipation system provided in this embodiment of the utility model can fully utilize the contact area on both sides of the battery cell to achieve heat exchange by setting the heat dissipation unit of the heat dissipation component on both sides of the battery cell. This solves the problem of large temperature difference between the top and bottom of the battery cell in the bottom cooling solution and improves heat exchange efficiency. At the same time, the use of serpentine heat dissipation pipes can further increase the contact area with the battery cell, improve heat exchange efficiency, reduce energy consumption, reduce the number of parts to achieve weight reduction, improve the reliability of the structure, and further reduce costs. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 A schematic diagram of a structure of an embodiment of the battery pack heat dissipation system provided by this utility model;

[0021] Figure 2 A schematic diagram of the housing structure of an embodiment of the battery pack heat dissipation system provided by this utility model;

[0022] Figure 3 A schematic diagram of the structure of a heat dissipation component in one embodiment of the battery pack heat dissipation system provided by this utility model;

[0023] Among them, 10-box body, 20-battery module, 30-heat dissipation component, 31-heat dissipation unit, 32-horizontal manifold, 33-water outlet circuit, 34-medium inlet, 35-medium outlet, 40-temperature acquisition unit, 50-temperature control unit, 11-box frame, 12-battery module mounting beam, 14-water inlet, 15-water outlet, 13-temperature control unit mounting plate, 60-communication module. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0025] Please refer to Figures 1-3 , Figure 1 A schematic diagram of a structure of an embodiment of the battery pack heat dissipation system provided by this utility model; Figure 2 A schematic diagram of the housing structure of an embodiment of the battery pack heat dissipation system provided by this utility model; Figure 3 A schematic diagram of the heat dissipation component of an embodiment of the battery pack heat dissipation system provided by this utility model.

[0026] In one specific embodiment, the battery pack heat dissipation system includes a housing 10 and a heat dissipation component 30 and a battery module 20 disposed on the housing 10. The heat dissipation component 30 includes at least one heat dissipation unit 31, which is disposed on both sides of the battery cell of the battery module 20 and is used to cool the battery cell. The heat dissipation pipe of the heat dissipation unit 31 is used to introduce a cooling medium to dissipate heat from the battery module 20, and the heat dissipation pipe is a serpentine heat dissipation pipe.

[0027] By placing the heat dissipation unit 31 of the heat dissipation component 30 on both sides of the battery cell, heat exchange can be fully utilized by making full use of the contact area on both sides of the battery cell, solving the problem of large temperature difference between the top and bottom of the battery cell in the bottom cooling solution and improving heat exchange efficiency. At the same time, the use of serpentine heat dissipation pipes can further increase the contact area with the battery cell, improve heat exchange efficiency, reduce energy consumption, reduce the number of parts to achieve weight reduction, improve the reliability of the structure, and further reduce costs.

[0028] The heat dissipation component 30 in this application can cool the cells of the battery module 20 in a one-to-one or one-to-many manner. One-to-one cooling requires more cooling water inlets and outlets, while one-to-many cooling only requires one cooling water inlet and one cooling water outlet.

[0029] To improve the utilization efficiency of the pipeline, in one embodiment, the battery pack heat dissipation system further includes a transverse manifold 32 disposed at the end of the heat dissipation unit 31. The other end of the transverse manifold 32 is connected to the adjacent heat dissipation unit 31 or the water outlet circuit 33. The output end of the water outlet circuit 33 is connected to the output end of the heat dissipation component 30. The height of the transverse manifold 32 is greater than or equal to the height of the heat dissipation unit 31 and the water outlet circuit 33.

[0030] By setting a horizontal manifold 32 at the end of the heat dissipation unit 31, horizontal flow is achieved, and then the coolant is output to other heat dissipation units 31 or the water outlet circuit 33 through the horizontal manifold 32, thereby outputting cooling water and other cooling media. At the same time, the height of the horizontal manifold 32 is greater than or equal to the height of the heat dissipation unit 31 and the water outlet circuit 33, so that the overall circulation of coolant is unidirectional, and the heated coolant will not flow back into the water inlet circuit, ensuring the overall heat exchange efficiency and heat exchange reliability.

[0031] In this application, a serpentine heat dissipation unit is used for heat dissipation. The specific shape and size of the serpentine heat dissipation unit are not limited. The serpentine heat dissipation unit is a serpentine heat dissipation unit that extends in the length direction of the battery cell of the battery module 20, or a serpentine heat dissipation unit that extends in the height direction of the battery cell of the battery module 20, or a serpentine heat dissipation unit of other shapes, or a combination of various different serpentine heat dissipation units, etc.

[0032] In this application, the serpentine heat dissipation unit includes at least one periodic heat dissipation unit. The shape of the periodic heat dissipation unit is a sawtooth wave, a sine wave, or a square wave. Multiple periodic heat dissipation units of the same serpentine heat dissipation unit have the same shape, the same amplitude, and the same period length.

[0033] By setting up periodic heat dissipation units, one or more periodic heat dissipation units can be periodically connected to form a serpentine heat dissipation unit, thereby achieving heat dissipation for battery modules 20 of different sizes. The shape of the periodic heat dissipation unit includes, but is not limited to, the shapes mentioned above; other shapes can also be used. Multiple periodic heat dissipation units of the same serpentine heat dissipation unit have the same shape, equal size, and equal amplitude, which can achieve mass production and reduce production costs. In practical applications, periodic heat dissipation units of different shapes can also be set as needed.

[0034] To further improve heat dissipation efficiency, in one embodiment, the battery pack heat dissipation system further includes a temperature acquisition unit 40 disposed on the housing 10. The temperature acquisition unit 40 includes a first temperature sensor disposed on the battery module 20 and a second temperature sensor disposed on the heat dissipation assembly 30. The first temperature sensor is used to detect the cell temperature of the battery module 20, and the second temperature sensor is used to detect the medium temperature of the medium inlet 34 and the medium outlet 35 of the heat dissipation assembly 30.

[0035] By setting a temperature acquisition unit 40 in the housing 10, the temperature of the battery module 20 and the temperature and flow rate of the cooling medium can be acquired in real time. This allows for heat dissipation capacity control based on temperature and flow rate, and control based on temperature changes in the battery module 20, thereby improving control efficiency.

[0036] This application does not limit the location, type, or number of temperature sensors in the temperature acquisition unit 40. Contact temperature sensors or non-contact temperature sensors with infrared temperature sensors can be used.

[0037] To further improve the control efficiency of the battery module 20 and increase energy utilization efficiency, in one embodiment, the battery pack heat dissipation system further includes a temperature control unit 10 disposed on the housing 10. The temperature control unit 10 is connected to the temperature acquisition unit 40 and is used to control the medium input temperature and input flow rate of the heat dissipation component 30.

[0038] The temperature and flow rate of the cooling medium are controlled by the temperature control unit 50, which improves the efficiency of heat dissipation control.

[0039] This application does not limit the structure and control method of the temperature control unit 50. Temperature control can be performed using a controller including but not limited to a PLC controller and a microcontroller controller.

[0040] This application does not limit the structure of the housing 10. In order to improve the ease of installation of components, in one embodiment, the housing 10 includes a housing frame 11, a battery module mounting beam 12, a water inlet 14, a water outlet 15, and a temperature control unit mounting plate 13. The battery module mounting beam 12 is disposed inside the housing frame 11 and is parallel to the short side of the housing frame 11. The temperature control unit mounting plate 13, the water inlet 14, and the water outlet 15 are disposed on the side of the housing frame 11 where the short side is located. The water inlet 14 and the water outlet 15 are located below the temperature control unit mounting plate 13.

[0041] By setting up the battery module mounting beam 12, water inlet 14, water outlet 15 and temperature control unit mounting plate 13, the installation of the battery module 20, the inlet and outlet of the cooling pipes of the heat dissipation component 30 and the installation of the temperature control unit 50 are facilitated, thus improving the installation efficiency.

[0042] This application does not limit the position and size of the battery module mounting beam 12, the water inlet 14, the water outlet 15, and the temperature control unit mounting plate 13.

[0043] To further improve the safety and reliability of use, in one embodiment, the battery pack heat dissipation system further includes sealing rings disposed at the water inlet 14 and the water outlet 15 for fixing and sealing the water supply pipes of the heat dissipation assembly 30.

[0044] By fixing and sealing the water supply pipe of the heat dissipation component 30 with sealing rings at the water inlet 14 and the water outlet 15, it is ensured that even if the battery module 20 has acceleration during movement, the water supply pipe will not collide with the water inlet 14 and the water outlet 15, thus improving the safety of use.

[0045] This application does not impose any restrictions on the material or installation method of the sealing ring.

[0046] To further improve control efficiency, in one embodiment, the battery pack heat dissipation system further includes a communication module 60 disposed on the short side of the enclosure frame 11. The communication module 60 is connected to the temperature control unit 50, and the communication module 60 is a Bluetooth module, a Zigbee module, a CAN communication module, a 4G module, or a 5G module.

[0047] By connecting the communication module 60 to the temperature control unit 50, remote control of the heat dissipation component 30 can be achieved, and centralized control of different battery modules 20 can be realized, thereby improving control efficiency.

[0048] This application does not limit the type, quantity, installation method, or installation type of the communication module.

[0049] In this application, the battery module 20 and the heat dissipation component 30 are installed through the housing 10. There are no limitations on its size, material and processing technology. The housing 10 is a sheet metal housing 10, an integrally formed housing 10 or other types of housing 10.

[0050] The housing 10 is formed by sheet metal bending, which eliminates the need for additional reinforcing ribs to enhance mechanical strength. It also avoids the problem of high complexity in flow channel integration, reducing the product's manufacturing cost and energy consumption.

[0051] In one embodiment, the battery pack heat dissipation system includes a housing 10, battery modules 20, a temperature acquisition unit 40, a temperature control unit, a heat dissipation assembly 30, and a communication module 60. The housing 10 serves as a supporting structure for the entire product. The battery modules are fixed to the bottom of the housing 10, and the communication module 60 is fixed to the front of the housing 10 for transmitting electrical signals to an external liquid cooling unit to convey temperature information of the battery modules 20. A temperature acquisition unit 40 for acquiring cell temperature is welded to the upper part of the battery modules 20. A temperature control unit for reading temperature is disposed inside the housing 10. The heat dissipation assembly 30 is attached to adjacent battery modules 20 or between the battery modules 20 and the wall separating them from the housing 10. The temperature acquisition unit 40 is connected to the temperature control unit, and the temperature control unit is connected to the communication module 60.

[0052] The lower housing 10 consists of a housing frame 11, a battery module mounting beam 12, a water inlet 14, a water outlet 15, and a temperature management system mounting plate. The housing frame 11 is formed by bending sheet metal and welding. The battery module mounting beam 12 is welded to the bottom of the housing 10 for fixing the battery module 20. A temperature management system mounting plate for fixing the temperature management system is fixed to the front of the lower housing 10. At the same time, the water inlet 14 and the water outlet 15 are fixed to the front of the lower housing 10. The water inlet 14 and the water outlet 15 have built-in sealing rings for fixing and sealing the heat dissipation component 30.

[0053] The heat dissipation component 30 consists of an inlet pipe, an outlet pipe, an inlet circuit, an outlet circuit 33, and a manifold. The adjacent circuits are in contact with the battery module 20.

[0054] During system operation, the battery module 20 continuously heats up due to cell charging and discharging. Simultaneously, the temperature acquisition unit 40 and the heat dissipation component 30 operate continuously, with the heat dissipation component 30 continuously circulating a uniformly heated coolant. When the temperature management system detects that the battery module 20's temperature reaches a certain threshold, it sends an electrical signal, which is transmitted to the external liquid cooling unit via the communication module 60. The liquid cooling unit then activates, and the low-temperature coolant enters the heat dissipation component 30's inlet pipe through the inlet 14 of the lower housing 10. After passing through the inlet circuit, it exchanges heat with the side of the battery cells. Once the coolant has completed heat exchange and heated up, it is guided through the manifold to the outlet circuit 33, and finally discharged through the outlet pipe to the outlet 15 of the lower housing 10, ultimately reaching the outside environment to achieve system cooling.

[0055] The pipe length in this application is related to the overall length of the battery module; the pipe diameter is related to the heating power of the cell and the inlet flow rate; the minimum cycle length is related to the cell thickness and the manufacturability of the pipe.

[0056] To meet the bending requirements of the serpentine tube, a one-to-one tube configuration is adopted (i.e., one tube is arranged on one side of each cell). The amplitude is mainly considered based on the inlet flow rate. Under the condition that the coolant can be pushed to the highest point in the tube and the flow can be guaranteed, the larger the amplitude, the better, so as to achieve a larger heat exchange area with the cell.

[0057] To meet assembly requirements, the diameters of the inlet and outlet pipes of the heat dissipation components should typically be smaller than the diameters of the inlet and outlet pipes on the enclosure. If the inlet flow rate of the enclosure is constant, since the coolant is an incompressible fluid, according to the continuity equation of liquids, when the pipe diameter decreases, the flow velocity v must increase to maintain a constant flow rate Q (i.e., the coolant flow velocity inside the heat dissipation component pipes > the flow velocity of the circulating coolant outside the enclosure). When the coolant flow rate increases, the amount of heat carrier (coolant) passing through the pipe per unit time increases, but with the heat load (cell heating power) remaining constant, the heat absorbed by the coolant is distributed to more fluids, resulting in a lower outlet temperature and a smaller inlet-outlet temperature difference. Compared to traditional bottom cooling, it has better temperature uniformity.

[0058] This application requires the collection of coolant temperatures at the inlet and outlet of the water pipe; ethylene glycol aqueous solution can be used as the coolant; other forms of refrigerant may be used, depending on the actual situation.

[0059] The above technical solution has the following beneficial effects:

[0060] 1. Compared to bottom cooling solutions, this method can fully utilize the contact area on both sides of the battery cell to achieve heat exchange, solving the problem of large temperature difference between the top and bottom of the battery cell in bottom cooling solutions and achieving a significant improvement in heat exchange efficiency. At the same time, the serpentine flow channel design further increases the contact area with the battery cell, further improving the system's heat exchange efficiency. Furthermore, because the manifold is arranged in a high-in-the-middle and low-on-the-sides configuration, the coolant circulates unidirectionally, preventing the heated coolant from flowing back into the inlet circuit and ensuring overall heat exchange efficiency.

[0061] 2. The serpentine flow channels of the heat dissipation component 30 are distributed on both sides of the battery module 20, which improves the rigidity of the module and can withstand greater loads when the housing 10 or the module is subjected to drop impact or compression, further ensuring the safety of the battery pack.

[0062] 3. The housing 10 only requires sheet metal bending and forming, without the need to add extra reinforcing ribs for mechanical strength. It also avoids the problem of high complexity in flow channel integration, reducing the manufacturing cost and energy consumption of the product.

[0063] 4. The heat dissipation component 30 is integrated inside the cabinet 10, avoiding the occupation of extra space at the bottom of the cabinet 10, and the system has a higher degree of integration.

[0064] In summary, the battery pack heat dissipation system provided by this utility model embodiment, by placing the heat dissipation unit of the heat dissipation component on both sides of the battery cell, can make full use of the contact area on both sides of the battery cell to achieve heat exchange, solving the problem of large temperature difference between the top and bottom of the battery cell in the bottom cooling solution, and improving heat exchange efficiency; at the same time, the use of serpentine heat dissipation pipes can further increase the contact area with the battery cell, improve heat exchange efficiency, reduce energy consumption, reduce the number of parts to achieve weight reduction, improve structural reliability, and further reduce costs.

[0065] The battery pack heat dissipation system provided by this utility model has been described in detail above. Specific examples have been used to illustrate the principle and implementation of this utility model. The descriptions of the embodiments above are only for the purpose of helping to understand the method and core idea of ​​this utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made to this utility model without departing from the principle of this utility model, and these improvements and modifications also fall within the protection scope of the claims of this utility model.

Claims

1. A battery pack heat dissipation system, characterized in that, The device includes a housing, a heat dissipation assembly, and a battery module disposed within the housing. The heat dissipation assembly includes at least one heat dissipation unit disposed on both sides of the battery cell in the battery module for cooling the cell. The heat dissipation unit has a heat dissipation pipe for introducing a cooling medium to dissipate heat from the battery module. The heat dissipation pipe is a serpentine heat dissipation pipe, and the heat dissipation unit is directly attached to both sides of the battery cell to facilitate heat exchange through both sides of the battery cell, shortening the heat conduction path from the top to the bottom of the battery cell. The device also includes a transverse manifold disposed at the end of the heat dissipation unit. The other end of the transverse manifold is connected to an adjacent heat dissipation unit or a water outlet circuit. The output end of the water outlet circuit is connected to the output end of the heat dissipation assembly. The height of the transverse manifold is greater than or equal to the height of the heat dissipation unit and the water outlet circuit.

2. The battery pack heat dissipation system as described in claim 1, characterized in that, The serpentine heat dissipation pipe is a serpentine heat dissipation unit extending along the length of the battery cell in the battery module, or a serpentine heat dissipation unit extending along the height of the battery cell in the battery module.

3. The battery pack heat dissipation system as described in claim 2, characterized in that, The serpentine heat dissipation unit includes at least one periodic heat dissipation unit. The shape of the periodic heat dissipation unit is a sawtooth wave, a sine wave, or a square wave. Multiple periodic heat dissipation units of the same serpentine heat dissipation unit have the same shape, the same amplitude, and the same period length.

4. The battery pack heat dissipation system as described in claim 1, characterized in that, It also includes a temperature acquisition unit disposed on the housing. The temperature acquisition unit includes a first temperature sensor disposed on the battery module and a second temperature sensor disposed on the heat dissipation assembly. The first temperature sensor is used to detect the cell temperature of the battery module, and the second temperature sensor is used to detect the medium temperature at the medium inlet and medium outlet of the heat dissipation assembly.

5. The battery pack heat dissipation system as described in claim 4, characterized in that, It also includes a temperature control unit installed in the enclosure, which is connected to the temperature acquisition unit and is used to control the medium input temperature and input flow rate of the heat dissipation component.

6. The battery pack heat dissipation system as described in claim 5, characterized in that, The enclosure includes an enclosure frame, a battery module mounting beam, a water inlet, a water outlet, and a temperature control unit mounting plate. The battery module mounting beam is located inside the enclosure frame and parallel to the short side of the enclosure frame. The temperature control unit mounting plate, the water inlet, and the water outlet are located on the side of the enclosure frame with the short side on the side. The water inlet and the water outlet are located below the temperature control unit mounting plate.

7. The battery pack heat dissipation system as described in claim 6, characterized in that, It also includes sealing rings installed at the water inlet and the water outlet for fixing and sealing the water supply pipes of the heat dissipation assembly.

8. The battery pack heat dissipation system as described in claim 5, characterized in that, It also includes a communication module located on the short side of the enclosure frame. The communication module is connected to the temperature control unit. The communication module can be a Bluetooth module, a Zigbee module, a CAN communication module, a 4G module, or a 5G module.

9. The battery pack heat dissipation system according to any one of claims 1-8, characterized in that, The enclosure is a sheet metal enclosure or a one-piece molded enclosure.

Images