Power battery system and vehicle

Abstract

The embodiment of the present application provides a power battery system, the system comprises: a plurality of battery cells, a top cooling structure and a plurality of gaskets; the top of the battery cell is provided with a pole; the bottom of the battery cell is provided with at least two explosion-proof valves; the top cooling structure is arranged at the top of the battery cell and connected with the top surface of the battery cell through a heat-conducting material; and the gasket is connected with the same polarity pole or different polarity poles of adjacent battery cells. The embodiment of the present application sets the pole at the top of the battery cell and sets the explosion-proof valve at the bottom of the battery cell, so that the thermal electricity is separated, the possibility of short circuit is reduced, at least two explosion-proof valves are arranged, the number and total area of exhaust passages are increased, the high-pressure gas generated by thermal runaway is quickly and effectively released, the top cooling structure is connected with the top surface of the battery cell through the heat-conducting material, the top surface is cooled, and the heat management performance is improved. The gasket is connected with the same polarity pole or different polarity poles of adjacent battery cells, so that the capacity is increased in parallel, and a high-voltage loop is formed through series connection.

Description

Technical Field

[0001] This invention relates to the field of vehicle technology, and in particular to a power battery system and a vehicle. Background Technology

[0002] In existing power battery systems, the battery cell is typically the core component, and its top and bottom structural design directly affects the battery's safety and performance. However, in traditional technologies, the cell's explosion-proof valve and terminals are often located on the same side, such as the top of the cell. In the event of thermal runaway, this design can cause high-temperature gases or flames to erupt from the explosion-proof valve, directly impacting the terminal area. This can trigger a short circuit between the terminal and other conductive components, further exacerbating the spread of thermal runaway and seriously threatening the safety and lifespan of the battery system. Summary of the Invention

[0003] In view of the above problems, embodiments of the present invention are proposed to provide a power battery system and a vehicle that overcome or at least partially solve the above problems.

[0004] To address the aforementioned problems, this invention discloses a power battery system, the system comprising:

[0005] Multiple battery cells, top cooling structure, and multiple battery pads;

[0006] The top of the battery cell is provided with an electrode post;

[0007] The bottom of the battery cell is equipped with at least two explosion-proof valves;

[0008] The top cooling structure is disposed on the top of the battery cell and is connected to the top surface of the battery cell through a thermally conductive material;

[0009] The battery pack is connected to the same polarity terminal or different polarity terminal of the adjacent battery cell.

[0010] Optionally, the total area of ​​at least two of the explosion-proof valves occupies 1 / 3 to 4 / 5 of the bottom area of ​​the battery cell.

[0011] Optionally, the system further includes:

[0012] A bottom cooling structure is located at the bottom of the battery cell and is connected to the bottom of the battery cell via a thermally conductive material;

[0013] The bottom cooling structure overlaps with part of the explosion-proof valve, and the ratio of the width of the overlapping part to the length of the explosion-proof valve is within a preset range.

[0014] Optionally, the bottom cooling structure is a harmonica tube cooling plate with a thickness of 5 mm or more.

[0015] Optionally, the system further includes:

[0016] A side cooling structure is disposed between adjacent battery cells and connected to the side of the battery cells via a thermally conductive material. The height of the side cooling structure is 1 / 3 to 1 times the height of the battery cells.

[0017] Optionally, the battery cells are arranged in columns, with each column including at least one battery cell;

[0018] The system also includes:

[0019] A sampling unit is disposed on the side of the battery cell and is bonded to the metal casing of the battery cell through a thermally conductive material. It is used to directly collect the temperature and / or voltage of the metal casing.

[0020] Optionally, the sampling unit includes a flexible circuit board, the top of which is 5 to 30 millimeters away from the shoulder of the battery cell; the flexible circuit board includes an extended voltage sampling branch for collecting the voltage of the battery cell; the flexible circuit board is fixed to the side of the battery cell with double-sided adhesive, the side of the battery cell is covered with an insulating film, and the insulating film has a window at the temperature sampling position to expose the metal casing.

[0021] Optionally, the voltage sampling branch is arranged on the battery cell to monitor the voltage of the battery cell in real time.

[0022] Optionally, the system further includes:

[0023] A metal top cover is bonded to the top of the battery cell using a thermally conductive material; the metal top cover includes mounting points that are integrally connected to the metal top cover.

[0024] Optionally, the top cooling structure is a stamped liquid cooling plate, which includes mounting points and is integrally connected to the stamped liquid cooling plate.

[0025] This invention also discloses a vehicle, comprising:

[0026] As described above, the mounting point of the power battery system is connected to the vehicle body.

[0027] The embodiments of the present invention have the following advantages:

[0028] The power battery system provided in this embodiment of the invention includes multiple battery cells, a top cooling structure, and multiple battery terminals; the top of the battery cell is provided with a terminal post; the bottom of the battery cell is provided with at least two explosion-proof valves; the top cooling structure is provided on the top of the battery cell and is connected to the top surface of the battery cell through a thermally conductive material; the battery terminals are connected to the same polarity terminal post or different polarity terminal posts of adjacent battery cells.

[0029] Compared with the prior art, the embodiments of the present invention have the following beneficial effects:

[0030] By placing the terminals at the top of the battery cell and the explosion-proof valve at the bottom, thermoelectric separation is achieved. In the event of thermal runaway, gas is discharged from the bottom explosion-proof valve, away from the top terminals, avoiding direct contact between high-temperature materials and conductive components, thus significantly reducing the possibility of short circuits. The presence of at least two explosion-proof valves at the bottom of the battery cell increases the number and total area of ​​exhaust channels, enabling faster and more effective release of high-pressure gas generated by thermal runaway. The top cooling structure is connected to the top surface of the battery cell via thermally conductive material, achieving cooling of the top surface. Compared to traditional solutions that only cool the terminals, this significantly increases the heat exchange area and improves thermal management performance. Multiple electrodes connect to the same or different polarity terminals of adjacent battery cells, allowing for parallel connection to increase capacity or series connection to form a high-voltage circuit, meeting the voltage and current output requirements of different application scenarios. Attached Figure Description

[0031] Figure 1 This is a schematic diagram of the battery cell structure according to an embodiment of the present invention;

[0032] Figure 2 This is a schematic diagram of the top and bottom of the battery cell according to an embodiment of the present invention;

[0033] Figure 3 This is a schematic diagram of the bottom cooling structure and explosion-proof valve according to an embodiment of the present invention;

[0034] Figure 4 This is a schematic diagram showing the width of the bottom cooling structure and the explosion-proof valve in an embodiment of the present invention;

[0035] Figure 5 This is a schematic diagram of overlapping explosion-proof valves according to an embodiment of the present invention;

[0036] Figure 6 This is a schematic diagram of the exhaust channel structure according to an embodiment of the present invention;

[0037] Figure 7 This is a schematic diagram of the top cooling structure and the top of the battery cell according to an embodiment of the present invention;

[0038] Figure 8 This is a schematic diagram of the top cooling structure and the bottom cooling structure according to an embodiment of the present invention;

[0039] Figure 9 This is a schematic diagram of the side cooling structure according to an embodiment of the present invention;

[0040] Figure 10 This is a schematic diagram showing the relationship between the side cooling structure and the height of the battery cell in an embodiment of the present invention;

[0041] Figure 11This is a schematic diagram of the plasmid structure according to an embodiment of the present invention;

[0042] Figure 12 This is a schematic diagram of the plasmid structure according to an embodiment of the present invention;

[0043] Figure 13 This is a schematic diagram of the sampling unit structure according to an embodiment of the present invention;

[0044] Figure 14 This is a schematic diagram showing the distance between the temperature sampling point and the battery cell in an embodiment of the present invention;

[0045] Figure 15 This is a schematic diagram of the voltage sampling structure according to an embodiment of the present invention;

[0046] Figure 16 This is a schematic diagram of the voltage sampling structure according to an embodiment of the present invention;

[0047] Figure 17 This is a schematic diagram of the upper cover structure according to an embodiment of the present invention;

[0048] Figure 18 This is a schematic diagram of the upper cover structure according to an embodiment of the present invention;

[0049] Figure 19 This is a schematic diagram of the structure of the battery cell and the vehicle body according to an embodiment of the present invention. Detailed Implementation

[0050] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0051] This invention proposes a power battery system where terminals are located at the top of the cell and at least two explosion-proof valves are installed at the bottom to achieve thermoelectric separation and reduce the risk of short circuits in the event of thermal runaway. The system also includes cooling structures at the top, bottom, and sides to comprehensively enhance thermal management capabilities. A sampling unit is positioned on the side of the cell to ensure accurate temperature and voltage monitoring. The force transmission path is optimized through a top cover or a stamped liquid cooling plate, directly transferring the cell weight to the entire vehicle, thus balancing weight reduction and cost control. This invention not only covers the structure of battery systems but also extends to battery packs and vehicle applications, aiming to comprehensively improve the safety, efficiency, and practicality of power batteries.

[0052] This invention provides a power battery system comprising multiple battery cells. (Refer to...) Figure 1 A schematic diagram of a battery cell structure according to an embodiment of the present invention is shown. Each battery cell includes a top and a bottom. (Refer to...) Figure 2The diagram illustrates the top and bottom structures of a battery cell according to an embodiment of the present invention. A terminal post is disposed at the top of the battery cell, and at least two explosion-proof valves are disposed at the bottom of the battery cell. The terminal post and the explosion-proof valves are arranged separately to reduce the risk of short circuits in the event of thermal runaway. This thermoelectric separation design avoids the gas impact problem caused by the explosion-proof valve and terminal post being on the same side in conventional technologies.

[0053] The total area of ​​at least two explosion-proof valves occupies 1 / 3 to 4 / 5 of the bottom area of ​​the battery cell. The large total area of ​​the explosion-proof valves ensures rapid gas discharge in the event of thermal runaway. For high-energy-density battery cells (such as high-nickel battery cells), the area of ​​the explosion-proof valves can be further increased to ensure a larger gas exhaust channel in the event of thermal runaway.

[0054] Reference Figure 3 The diagram illustrates a bottom cooling structure and an explosion-proof valve according to an embodiment of the present invention. The system also includes a bottom cooling structure, such as a bottom cold plate, disposed at the bottom of the battery cell and connected to the bottom of the battery cell via a thermally conductive material, for cooling the bottom of the battery cell. (Refer to...) Figure 4 The diagram illustrates the width of the bottom cooling structure and the explosion-proof valve according to an embodiment of the present invention. The bottom cooling structure overlaps with a portion of the explosion-proof valve, and the ratio of the width of the overlapping portion to the length of the explosion-proof valve is within a preset range. For example, the width L1 of the overlapping portion is 1 / 5 to 1 / 2 of the length L2 of the explosion-proof valve, and it does not overlap with the remaining explosion-proof valve portion. (Refer to...) Figure 5 This diagram illustrates an embodiment of the invention with overlapping explosion-proof valves. Two explosion-proof valves at the bottom of the battery cell partially overlap with one other explosion-proof valve via a bottom cold plate, functioning as a multi-stage explosion-proof valve. When the explosion-proof valves overlap with the cold plate, the opening pressure of the battery cell's explosion-proof valves decreases. The pressure of the explosion-proof valves can be adjusted by changing the overlapping area. Simultaneously, the bottom liquid cooling plate (melting point ≤200℃) overlaps with the explosion-proof valves. In the event of thermal runaway, the gas and flame ejected from the explosion-proof valves will melt the cold plate, and the coolant inside the cold plate will spray out, providing a spray cooling effect on the thermally runaway battery cell and preventing heat propagation. (Refer to...) Figure 6 The diagram illustrates the structure of the exhaust channel according to an embodiment of the present invention. This bottom cooling structure can be a harmonica tube cold plate, providing support for the battery cell and forming an exhaust channel for thermal runaway. Its thickness can be greater than or equal to 5 mm, allowing for the reuse of the cold plate height and the exhaust channel in the Z-axis space, thus improving space utilization. The harmonica tube cold plate is used to melt during thermal runaway to release coolant and form a spray, and also serves as an exhaust channel, achieving multi-stage exhaust through the opening pressure of different explosion-proof valves. Specifically, by adjusting the overlap area between the cold plate and the battery cell's explosion-proof valve, the opening pressure of the explosion-proof valve will be different, so the two explosion-proof valves will open at different pressures, forming multi-stage exhaust. The current design is a two-stage exhaust; that is, when the battery cell experiences thermal runaway, the explosion-proof valve with the lower opening pressure will open first to exhaust air. When the battery cell experiences a secondary explosion, the second explosion-proof valve will open to exhaust air, forming multi-stage exhaust.

[0055] Reference Figure 7 The diagram illustrates a top cooling structure and a schematic representation of the top of a battery cell according to an embodiment of the present invention. The system includes a top cooling structure disposed on the top of the battery cell and connected to the top surface of the battery cell via a thermally conductive material. This structure is used to cool the top surface, which includes an electrode post and a top cover, thereby increasing the heat exchange area.

[0056] Reference Figure 8 The diagram illustrates the top and bottom cooling structures according to an embodiment of the present invention. A top cooling plate (top cooling structure) is arranged on the top of the battery cell, and a bottom cooling plate (bottom cooling structure) is arranged on the bottom of the battery cell, thus cooling and heating the top and bottom of the battery cell.

[0057] Reference Figure 9 This diagram illustrates a side cooling structure according to an embodiment of the present invention. The system includes a side cooling structure disposed between two adjacent rows of battery cells, connected to the sides of the cells via a thermally conductive material, for cooling the sides and enhancing structural strength. (Refer to...) Figure 10 The diagram illustrates the relationship between the side cooling structure and the battery cell height according to an embodiment of the present invention. The height H1 of the side cooling structure is 1 / 3 to 1 times the height H2 of the battery cell. The top, bottom, and side cooling structures work together to improve thermal management performance and meet the requirements of high-rate charging and discharging.

[0058] Reference Figure 11 and 12 The diagram illustrates a schematic of the electrode plate structure according to an embodiment of the present invention. Multiple electrodes plate connect adjacent battery cells, specifically connecting the same polarity terminals or different polarity terminals of adjacent battery cells, depending on the series / parallel connection method, thereby forming a high-voltage circuit. Only the output electrode electrode plate is retained on the top of the battery cell, with no other components. The battery cells are arranged in columns, with each column including at least one battery cell. (Refer to...) Figure 13 The diagram illustrates a sampling unit structure according to an embodiment of the present invention. A sampling unit is disposed on the side of the battery cell and is bonded to the battery cell's metal casing (such as an aluminum casing) via a thermally conductive material, for directly acquiring the temperature and / or voltage of the metal casing. (Refer to...) Figure 14 This diagram illustrates the distance between the temperature sampling point and the battery cell according to an embodiment of the present invention. The sampling unit includes a temperature sampling flexible printed circuit board (FPC), the top of which is 5 to 30 millimeters away from the shoulder of the battery cell. (Refer to...) Figure 15 and 16This diagram illustrates a voltage sampling structure according to an embodiment of the present invention. The temperature sampling FPC includes protruding voltage sampling branches for acquiring the cell voltage. The temperature sampling FPC is fixed to the side of the cell with double-sided adhesive, and the side is covered with an insulating film. A window is opened in the insulating film at the temperature sampling location to expose the metal casing. Instead of using a vacuum-formed electrical isolation plate for bonding and fixing, the blue film on the side of the cell needs adjustment. The blue film on the side should completely cover the cell, with a window only opening at the sampling location of the Negative Temperature Coefficient (NTC) to expose the metal casing of the cell, supporting direct acquisition of the cell's metal casing temperature by the NTC. The voltage sampling branches are arranged on a plate for real-time monitoring of the cell voltage.

[0059] Reference Figure 17 and 18 The diagram illustrates a schematic of the top cover structure according to an embodiment of the present invention. The system includes a metal top cover made of metal, bonded to the top of the battery cell via a thermally conductive material. The metal top cover includes mounting points, which are welded to the metal top cover to transfer the weight of multiple battery cells to the entire vehicle without passing through the battery box. Specifically, the battery cell block (a structural unit with multiple battery cell travel segments) is bonded to the metal top cover at the top. The weight of the entire battery cell block is transferred to the metal top cover, and then transferred to the entire vehicle via the central mounting point. The entire transfer path bypasses the battery box, thus reducing weight and cost. In another embodiment, the top cooling structure is a stamped liquid cooling plate that also serves as the top cover, including mounting points, which are laser-welded to the stamped liquid cooling plate to transfer the weight of the battery cells to the entire vehicle. Specifically, the cell block is bonded to the stamped liquid cooling plate at the top, and the weight of the entire cell block is transferred to the stamped liquid cooling plate, and then transferred to the whole vehicle through the middle mounting point. The entire transfer path no longer passes through the battery box, which plays a role in reducing weight and cost.

[0060] This invention employs a multi-faceted cooling solution, covering the top surface of the cell (terminals and top cover), the sides of the individual cells, and the bottom surface of the cells, significantly improving heat dissipation efficiency and ensuring thermal management requirements during high-rate charging and discharging. Furthermore, by filling the top of the cell with thermally conductive structural adhesive, the heat exchange area is increased, improving the overall cooling effect compared to traditional solutions that only cool the terminals.

[0061] A side-mounted temperature sampling unit is used to avoid interference from the top and bottom cold plates, improving the accuracy of temperature acquisition and ensuring the safety of the power battery. The side-mounted sampling unit is bonded to the metal casing of the battery cell with thermally conductive adhesive, directly measuring the temperature of the metal casing of the battery cell, unaffected by the cooling system, thus ensuring data reliability.

[0062] Employing a thermoelectric separation structure, the cell's terminals are positioned at the top, while the explosion-proof valve is located at the bottom, avoiding the short-circuit risk associated with terminals and valves being on the same side. The dual explosion-proof valves overlap with the bottom liquid-cooling plate, forming a multi-stage venting structure to ensure orderly gas release in the event of thermal runaway, reducing the risk of battery explosion. By adjusting the overlap area between the explosion-proof valve and the liquid-cooling plate, the opening pressure of the explosion-proof valve can be controlled, achieving staged venting and improving battery thermal safety. When the explosion-proof valve opens, the liquid-cooling plate melts, and internal coolant is sprayed out to cool the cell, preventing thermal runaway from spreading to adjacent cells.

[0063] The battery cell blocks are formed by bonding side cold plates to the cells, and then bonded to the vehicle body via a top liquid cooling plate or metal cover. This creates an optimized force transmission path, eliminating the need for battery weight to pass through the battery pack, effectively reducing overall vehicle weight and manufacturing costs. The metal cover, made of aluminum alloy / steel, is connected to the mounting point via electric welding / laser welding, making weight transfer of the battery module more efficient and safer. The integrated design of the stamped liquid cooling plate and metal cover reduces the number of components, further lowering costs and optimizing structural stability.

[0064] A temperature-sampling FPC voltage sampling branch is used to achieve real-time monitoring of cell voltage, ensuring the safe operation of the battery pack. The voltage sampling is arranged on the battery pad, shortening the sampling path, improving sampling accuracy, and reducing additional installation structures.

[0065] In summary, this invention significantly improves the safety, reliability, and economy of power batteries through innovative measures such as structural optimization, enhanced thermal management, improved safety, and optimized force transmission paths, providing a new technical solution for the development of new energy vehicle battery technology.

[0066] This system can be applied to vehicles. (Refer to...) Figure 19 The diagram illustrates the structure of the battery cell and vehicle body according to an embodiment of the present invention. The mounting point is connected to the vehicle body to transfer the weight of multiple battery cells to the vehicle body, thereby improving structural efficiency.

[0067] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on the differences from other embodiments. The same or similar parts between the various embodiments can be referred to each other.

[0068] Those skilled in the art will understand that embodiments of the present invention can be provided as methods, apparatus, or computer program products. Therefore, embodiments of the present invention can take the form of entirely hardware embodiments, entirely software embodiments, or embodiments combining software and hardware aspects. Furthermore, embodiments of the present invention can take the form of computer program products implemented on one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) containing computer-usable program code.

[0069] This invention is described with reference to flowchart illustrations and / or block diagrams of methods, terminal devices (systems), and computer program products according to embodiments of the invention. It will be understood that each block of the flowchart illustrations and / or block diagrams, and combinations of blocks in the flowchart illustrations and / or block diagrams, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, special-purpose computer, embedded processor, or other programmable data processing terminal device to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing terminal device, generate instructions for implementing the flowchart illustrations and / or block diagrams. Figure 1 One or more processes and / or boxes Figure 1 A device that provides the functions specified in one or more boxes.

[0070] These computer program instructions may also be stored in a computer-readable storage medium that can direct a computer or other programmable data processing terminal device to operate in a particular manner, such that the instructions stored in the computer-readable storage medium produce an article of manufacture including instruction means, which are implemented in a process Figure 1 One or more processes and / or boxes Figure 1 The function specified in one or more boxes.

[0071] These computer program instructions can also be loaded onto a computer or other programmable data processing terminal equipment, causing a series of operational steps to be performed on the computer or other programmable terminal equipment to produce a computer-implemented process, thereby providing instructions that execute on the computer or other programmable terminal equipment for implementing the process. Figure 1 One or more processes and / or boxes Figure 1 The steps of the function specified in one or more boxes.

[0072] Although preferred embodiments of the present invention have been described, those skilled in the art, upon learning the basic inventive concept, can make other changes and modifications to these embodiments. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments as well as all changes and modifications falling within the scope of the embodiments of the present invention.

[0073] Finally, it should be noted that in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or terminal device that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or terminal device. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or terminal device that includes said element.

[0074] The present invention has provided a detailed description of a power battery system and vehicle. Specific examples have been used to illustrate the principles and implementation methods of the present invention. The description of the above embodiments is only for the purpose of helping to understand the method and core ideas of the present invention. At the same time, for those skilled in the art, there will be changes in the specific implementation methods and application scope based on the ideas of the present invention. Therefore, the content of this specification should not be construed as a limitation of the present invention.

Claims

1. A power battery system, characterized in that, The system includes: Multiple battery cells, top cooling structure, and multiple battery pads; The top of the battery cell is provided with an electrode post; The bottom of the battery cell is equipped with at least two explosion-proof valves; The top cooling structure is disposed on the top of the battery cell and is connected to the top surface of the battery cell through a thermally conductive material; The battery pack is connected to the same polarity terminal or different polarity terminal of the adjacent battery cell.

2. The system according to claim 1, characterized in that, The total area of ​​at least two of the explosion-proof valves occupies 1 / 3 to 4 / 5 of the bottom area of ​​the battery cell.

3. The system according to claim 1, characterized in that, The system also includes: A bottom cooling structure is located at the bottom of the battery cell and is connected to the bottom of the battery cell via a thermally conductive material; The bottom cooling structure overlaps with part of the explosion-proof valve, and the ratio of the width of the overlapping part to the length of the explosion-proof valve is within a preset range.

4. The system according to claim 3, characterized in that, The bottom cooling structure is a harmonica tube cooling plate with a thickness of 5 mm or more.

5. The system according to any one of claims 1 to 4, characterized in that, The system also includes: A side cooling structure is disposed between adjacent battery cells and connected to the side of the battery cells via a thermally conductive material. The height of the side cooling structure is 1 / 3 to 1 times the height of the battery cells.

6. The system according to any one of claims 1 to 5, characterized in that, The battery cells are arranged in columns, with each column including at least one battery cell; The system also includes: A sampling unit is disposed on the side of the battery cell and is bonded to the metal casing of the battery cell through a thermally conductive material. It is used to directly collect the temperature and / or voltage of the metal casing.

7. The system according to claim 6, characterized in that, The sampling unit includes a flexible circuit board, the top of which is 5 to 30 millimeters away from the shoulder of the battery cell; the flexible circuit board includes an extended voltage sampling branch for collecting the voltage of the battery cell; the flexible circuit board is fixed to the side of the battery cell with double-sided adhesive, the side of the battery cell is covered with an insulating film, and the insulating film has a window at the temperature sampling position to expose the metal casing.

8. The system according to claim 7, characterized in that, The voltage sampling branch is arranged on the plate and is used to monitor the voltage of the battery cell in real time.

9. The system according to any one of claims 1 to 8, characterized in that, The system also includes: A metal top cover is bonded to the top of the battery cell via a thermally conductive material; the metal top cover includes mounting points that are integrally connected to the metal top cover.

10. The system according to any one of claims 1 to 9, characterized in that, The top cooling structure is a stamped liquid cooling plate, which includes mounting points and is integrated with the stamped liquid cooling plate.

11. A vehicle, characterized in that, include: The power battery system as described in any one of claims 1 to 10, wherein the mounting point of the power battery system is connected to the vehicle body.

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