Solid-state soft package battery PACK module

Abstract

The invention relates to the field of household kitchens, and discloses a solid soft package battery PACK module, which comprises two upper limiting rods, two ends of the two upper limiting rods are provided with metal plate limiting combinations, the inner walls of the metal plate limiting combinations are provided with insulating epoxy plates, one side of each metal plate limiting combination is provided with a lower limiting rod, and the other side of each metal plate limiting combination is provided with an insulating epoxy plate. A fixing rod is arranged on the side wall of the metal plate limiting combination, a first epoxy plate is arranged on one side of the fixing rod, a fire extinguishing device is arranged on one side of the fixing rod, and the inner side of the lower limiting rod is connected to the outer bottom wall of the insulating epoxy plate. Through the synergistic effect of an upper limiting rod, a lower limiting rod, a metal plate limiting combination and a fixing rod, stable supporting and limiting of a battery cell in the solid-state soft package battery PACK module are achieved, and an electrical path between the battery cell and a module shell is effectively isolated through the arrangement of an insulating epoxy plate; short circuit caused by accidental contact of the battery cell with the metal part of the module in the working process is prevented, and normal operation of the battery module is guaranteed.

Description

Technical Field

[0001] The present invention relates to the technical field of new energy battery modules, and specifically to a solid-state soft-pack battery PACK module. Background Art

[0002] With the development of new energy technologies, solid-state batteries have received widespread attention in the fields of electric vehicles, energy storage systems, etc. due to their advantages such as high energy density and high safety. The growing global demand for clean energy and electric vehicles has made battery technology a hot area for research and development, and soft-pack batteries are also favored due to their lightness and flexibility. However, traditional lithium-ion batteries have certain limitations in terms of cell protection and mechanical strength. When used in new energy vehicles, if a traffic accident occurs and the vehicle is hit, the traditional fixing and protection structure will not only fail to ensure the integrity of the cell, but will also cause damage to the cell. In severe cases, spontaneous combustion will occur, which will not only pose a personal threat to the driver, but also to surrounding vehicles. Summary of the invention

[0003] In view of the deficiencies in the prior art, the present invention provides a solid-state soft-pack battery PACK module, which solves the problem of poor stability of the battery cell when subjected to external force.

[0004] To achieve the above objectives, the present invention is implemented through the following technical solutions: a solid-state soft-pack battery PACK module, comprising two upper limit rods, both ends of the two upper limit rods are provided with sheet metal limit assemblies, the inner wall of the sheet metal limit assembly is provided with an insulating epoxy plate, one side of the sheet metal limit assembly is provided with a lower limit rod, the side wall of the sheet metal limit assembly is provided with a fixing rod, one side of the fixing rod is provided with an epoxy plate, one side of the fixing rod is provided with a fire extinguishing device, the side wall of the fire extinguishing device is connected to one side of the fixing rod, the inner side of the upper limit rod is connected to the outer top wall of the insulating epoxy plate, and the inner side of the lower limit rod is connected to the outer bottom wall of the insulating epoxy plate.

[0005] Preferably, a plurality of copper-aluminum composite sheets are provided on the outer wall of the insulating epoxy board, and a PACK module is provided on one side of the copper-aluminum composite sheet.

[0006] Preferably, a plurality of screws are threadedly connected to the outer walls at both ends of the insulating epoxy board, and a pole lug is provided on one side of the insulating epoxy board, and the screws are threadedly connected to the pole lug through the insulating epoxy board.

[0007] Preferably, a heating film is provided on the opposite side of the insulating epoxy board, and an epoxy board 2 is provided on one side of the heating film.

[0008] Preferably, insulating PP boards are symmetrically arranged at both ends of the insulating epoxy board, and the side wall of the insulating PP board is arranged at one end of the PACK module.

[0009] Preferably, a side away from the insulating PP board is arranged at one end of the epoxy board, a solid-state battery cell is arranged on one side of the insulating PP board and the epoxy board, and an export aluminum plate is arranged on the side walls of the two solid-state battery cells.

[0010] Preferably, the fire extinguishing device is an aerosol fire extinguishing device, and a side wall of the aerosol fire extinguishing device is connected to one side of the fixing rod.

[0011] A method for operating a solid-state soft-pack battery PACK module comprises the following steps: S1. Both ends of the two upper limit rods are limited by the sheet metal limit assembly, and the lower limit rod and the fixed rod are also connected to the sheet metal limit assembly to form a preliminary fixing frame for the internal structure, in which the insulating epoxy board is arranged inside for fixing and insulation.

[0012] S2. A copper-aluminum composite sheet is arranged on the outer wall of the insulating epoxy board for electrical connection between battery cells. One side of the copper-aluminum composite sheet is connected to the PACK module. The outer walls at both ends of the insulating epoxy board are connected to the pole ears by screws to achieve electrical connection fixation.

[0013] S3. Insulating PP plates are symmetrically arranged at both ends of the insulating epoxy plate. The insulating PP plates are used for insulation between battery cells. Solid battery cells are arranged on the outer wall of the insulating PP plate. An epoxy plate is arranged on one side of the solid battery cell. The solid battery cells on both sides are connected by an export aluminum plate.

[0014] S4. An aerosol fire extinguishing device is installed on one side of the fixed pole to extinguish fire in emergency situations such as thermal runaway.

[0015] Working principle: The upper limit rod and the lower limit rod cooperate with the sheet metal limit assembly. The inner side of the upper limit rod is connected to the outer top wall of the insulating epoxy board, and the inner side of the lower limit rod is connected to its outer bottom wall. The internal structure is precisely limited in the vertical direction. At the same time, the fixing rods on the side walls of the sheet metal limit assembly further enhance the stability of the overall structure and prevent the battery cells from being displaced due to external forces. The copper-aluminum composite sheet on the outer wall of the insulating epoxy board is used to connect each solid-state battery cell to achieve current conduction between the battery cells, so that multiple battery cells form a coordinated electrical unit and establish an electrical connection path with the PACK module. The screw passes through the insulating epoxy board and is connected to the pole ear thread to ensure the stability of the pole ear position and reliable electrical connection. In terms of temperature, the heating film can work in a low temperature environment, providing heat to the battery cell to maintain its normal performance. Its heat is blocked by the second epoxy board to avoid affecting other components. The insulating PP board is symmetrically arranged at both ends of the insulating epoxy board. With good insulation, it prevents electrical conduction between the battery cell and metal parts such as the PACK module shell to prevent short circuits. When thermal runaway occurs inside the module due to battery cell failure and the temperature rises sharply, the aerosol fire extinguishing device will quickly activate and release aerosol fire extinguishing agent to reduce the temperature of the combustion area and isolate oxygen through chemical inhibition, thereby effectively controlling the spread of fire, protecting the internal structure of the module and the safety of the battery cells, and maintaining the overall stable operation of the module.

[0016] The present invention provides a solid-state soft-pack battery PACK module. It has the following beneficial effects: 1. The present invention realizes the stable support and limitation of the internal battery cells of the solid-state soft-pack battery PACK module through the coordinated action of the upper limit rod, the lower limit rod, the sheet metal limit assembly and the fixed rod. The setting of the insulating epoxy board effectively isolates the electrical path between the battery cell and the module shell, preventing the battery cell from short-circuiting due to accidental contact with the metal part of the module during operation, thereby ensuring the normal operation of the battery module.

[0017] 2. The present invention ensures good electrical conductivity between battery cells through the application of copper-aluminum composite sheets, reduces the resistance of the connection parts, and reduces the loss during power transmission. The threaded connection method between the screws and the insulating epoxy plate and the pole ears can maintain a good electrical connection state even when affected by factors such as vibration and temperature changes during long-term use.

[0018] 3. The present invention greatly improves the overall insulation performance of the PACK module by setting up the insulating PP board, so that the battery cell can work in a safe electrical environment inside the module, reducing the risk of battery failure caused by electrical short circuit. The insulating PP board's isolation and regularizing effect on the electric field helps to make the electric field distribution around the battery cell more uniform and stable, thereby ensuring the stability and safety of the module during normal charging and discharging.

[0019] 4. The present invention has a highly efficient fire extinguishing performance through the aerosol fire extinguishing agent, which can quickly block the chain process of the combustion reaction, reduce the temperature of the combustion area through chemical inhibition, and isolate oxygen at the same time, so that the flame is extinguished in a short time, effectively suppressing the spread of the fire, and can quickly and evenly spread to every corner, and completely extinguish possible fire sources, thereby minimizing the damage caused by the fire to the PACK module and protecting the integrity of the battery cells, circuit connection components and other related components in the module. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a three-dimensional schematic diagram of the present invention; Figure 2 It is a schematic diagram of a partial structure of the present invention; Figure 3 It is a side view schematic diagram of the partial structure of the present invention; Figure 4 It is a schematic diagram of a partial structure of the present invention from a top view; Figure 5 It is a disassembled stereoscopic schematic diagram of the front side of the present invention.

[0021] Among them, 1. solid-state battery cell; 2. insulating PP board; 3. export aluminum plate; 4. epoxy board 1; 5. copper-aluminum composite sheet; 6. insulating epoxy board; 7. heating film; 8. epoxy board 2; 9. sheet metal limit combination; 10. aerosol fire extinguishing device; 11. pole ear; 12. screw; 13. PACK module; 14. fixing rod; 15. lower limit rod; 16. upper limit rod. DETAILED DESCRIPTION

[0022] The technical solution of the present invention will be described clearly and completely below in conjunction with the accompanying drawings of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0023] Example: Please refer to the attached Figure 1 -Attached Figure 5An embodiment of the present invention provides a solid-state soft-pack battery PACK module, including two upper limit rods 16, sheet metal limit assemblies 9 are arranged at both ends of the two upper limit rods 16, an insulating epoxy plate 6 is arranged on the inner wall of the sheet metal limit assembly 9, a lower limit rod 15 is arranged on one side of the sheet metal limit assembly 9, a fixing rod 14 is arranged on the side wall of the sheet metal limit assembly 9, an epoxy plate 4 is arranged on one side of the fixing rod 14, a fire extinguishing device is arranged on one side of the fixing rod 14, the side wall of the fire extinguishing device is connected to one side of the fixing rod 14, the inner side of the upper limit rod 16 is connected to the outer top wall of the insulating epoxy plate 6, and the inner side of the lower limit rod 15 is connected to the outer bottom wall of the insulating epoxy plate 6.

[0024] Specifically, the upper limit rod 16 and the lower limit rod 15 are respectively connected to the sheet metal limit assembly 9, and the inner side of the upper limit rod 16 is connected to the outer top wall of the insulating epoxy board 6, and the inner side of the lower limit rod 15 is connected to the outer bottom wall of the insulating epoxy board 6, so as to limit the internal battery cells in the vertical direction. The sheet metal limit assembly 9 and the fixed rod 14 together form a frame structure. The fixed rod 14 plays a supporting and fixing role on the side to ensure the stability of the entire module structure and prevent the internal battery cells from being displaced when subjected to external impact or vibration. The insulating epoxy board 6 is arranged on the inner wall of the sheet metal limit assembly 9, and the good insulation performance of the insulating epoxy board 6 itself is used to prevent short circuits between the battery cells and the metal shell of the module, thereby ensuring electrical safety.

[0025] Through the synergistic effect of the upper limit rod 16, the lower limit rod 15, the sheet metal limit assembly 9 and the fixed rod 14, the solid soft pack battery PACK module 13 internal battery cells are firmly supported and limited. In the scenario of vibration and impact caused by vehicle driving, equipment movement, etc., the battery cells can be fixed in position, the integrity of the module structure can be maintained, and the loose or damaged electrical connection caused by the displacement of the battery cells can be avoided, thereby improving electrical safety. The problem that the battery cells are prone to displacement due to lack of effective support and limitation during the integration of the solid soft pack battery in the PACK module 13 is solved, the position stability of the battery cells during long-term use is ensured, and the reliability and service life of the module are improved.

[0026] Please refer to the attached Figure 1 , Attachment Figure 3 , Attachment Figure 5 The outer wall of the insulating epoxy board 6 is provided with a plurality of copper-aluminum composite sheets 5, a PACK module 13 is provided on one side of the copper-aluminum composite sheet 5, a plurality of screws 12 are threadedly connected to the outer walls of both ends of the insulating epoxy board 6, a pole ear 11 is provided on one side of the insulating epoxy board 6, and the screw 12 is threadedly connected to the pole ear 11 through the insulating epoxy board 6.

[0027] Specifically, the copper-aluminum composite sheet 5 is arranged on the outer wall of the insulating epoxy board 6, which uses the good conductivity of copper and aluminum to connect each solid-state battery cell, realize current conduction between the battery cells, and connect multiple battery cells in series or in parallel to form an integral electrical performance unit, forming an effective electrical connection path with the PACK module 13 to meet the power requirements of external devices. At the same time, the screw 12 passes through the insulating epoxy board 6 and is threadedly connected to the pole ear 11, further fixing the position of the pole ear 11 and ensuring the stability of its connection with the copper-aluminum composite sheet 5 and the external circuit, so that the current can smoothly flow into or out of the battery cell through the pole ear 11.

[0028] The application of the copper-aluminum composite sheet 5 ensures good conductivity between the cells, reduces the resistance of the connection parts, reduces the loss during the power transmission process, improves the charging and discharging efficiency of the entire PACK module 13, and enables the battery module to provide stable power output for external devices more efficiently. The problems of excessive resistance, severe power loss, and unstable electrical connection between the cells in the solid-state soft-pack battery PACK module 13 caused by improper connection materials or methods are solved, and the overall electrical performance of the module is improved, so that it can better adapt to various application scenarios with high requirements for power supply.

[0029] Please refer to the attached Figure 1 , Attachment Figure 2 , Attachment Figure 5 Insulating PP boards 2 are symmetrically arranged at both ends of the insulating epoxy board 6, and the side walls of the insulating PP boards 2 are arranged at one end of the PACK module 13. Insulating PP boards 2 are symmetrically arranged at both ends of the insulating epoxy board 6, and the side walls of the insulating PP boards 2 are arranged at one end of the PACK module 13.

[0030] Specifically, the insulating PP board 2 is symmetrically arranged at both ends of the insulating epoxy board 6, and the insulating PP board 2 uses its own excellent insulation performance to build a series of insulating barriers inside the PACK module 13. It can effectively prevent the electrical conduction path that may occur between the battery cell and the PACK module 13 shell and other metal parts, and avoid short circuits caused by accidental contact. At the same time, it is located in a specific position, which can effectively isolate and regulate the electric field around the battery cell, reducing the impact of electric field interference on the working state of the battery cell.

[0031] The provision of the insulating PP board 2 greatly improves the overall insulation performance of the PACK module 13, allowing the battery cells to work in a safe electrical environment inside the module, reducing the risk of battery failure caused by electrical short circuits, and ensuring the stability and safety of the module during normal charging and discharging. This solves the insulation weakness of the PACK module 13 under complex working conditions due to imperfect insulation material layout, avoids electrical safety accidents such as short circuits and leakage caused by insulation failure, ensures that the module can maintain a good insulation state under various environmental conditions, and provides a solid guarantee for the stable operation of the battery system.

[0032] Please refer to the attached Figure 1 -Attached Figure 5 The fire extinguishing device is an aerosol fire extinguishing device 10 , and a side wall of the aerosol fire extinguishing device 10 is connected to one side of the fixing rod 14 .

[0033] Specifically, the aerosol fire extinguishing device 10 monitors the temperature changes inside the PACK module 13 in real time through its built-in high-precision temperature sensor. Once the temperature inside the module rises sharply and exceeds the set threshold due to abnormal conditions such as thermal runaway of the battery cell and short circuit, the fire extinguishing device will immediately start the internal chemical reaction mechanism. The fire extinguishing agent stored inside reacts rapidly to produce a large amount of aerosol fire extinguishing agent. These aerosol fire extinguishing agents are quickly sprayed and diffused into the internal space of the module through a specific spraying channel, filling the entire internal environment of the module in a short time.

[0034] Aerosol fire extinguishing agent has high fire extinguishing performance. It can quickly block the chain process of combustion reaction, reduce the temperature of the combustion area through chemical inhibition, and isolate oxygen at the same time, so that the flame is extinguished in a short time, effectively suppressing the spread of fire. It solves the major safety hazard of fire caused by thermal runaway of solid-state soft-pack battery PACK module 13 due to battery cell failure or other abnormal conditions during operation.

[0035] Please refer to the attached Figure 1 -Attached Figure 5 , an operating method of a solid-state soft-pack battery PACK module 13, comprising the following steps: S1, the two ends of the two upper limit rods 16 are limited by the sheet metal limit assembly 9, and the lower limit rod 15 and the fixing rod 14 are also connected to the sheet metal limit assembly 9 to form a preliminary fixing frame for the internal structure, wherein the insulating epoxy board 6 is arranged inside for fixing and insulation.

[0036] S2. A copper-aluminum composite sheet 5 is disposed on the outer wall of the insulating epoxy board 6 for electrical connection between the battery cells. One side of the copper-aluminum composite sheet 5 is connected to the PACK module 13. The outer walls at both ends of the insulating epoxy board 6 are connected to the tabs 11 by screws 12 to achieve electrical connection fixation.

[0037] S3. Insulating PP plates 2 are symmetrically arranged at both ends of the insulating epoxy plate 6. The insulating PP plates 2 are used for insulation between battery cells. Solid battery cells 1 are arranged on the outer wall of the insulating PP plates 2. An epoxy plate 4 is arranged on one side of the solid battery cell 1. The solid battery cells 1 on both sides are connected by an output aluminum plate 3.

[0038] S4. An aerosol fire extinguishing device 10 is provided on one side of the fixed rod 14 to extinguish fire in emergency situations such as thermal runaway.

[0039] Specifically, the frame structure constructed by the upper limit rod 16, the lower limit rod 15, the sheet metal limit assembly 9 and the fixed rod 14 provides a solid mechanical support for the entire module, effectively preventing the internal battery cells from being displaced or damaged under various external forces, and ensuring the integrity and stability of the module structure. At the same time, the setting of the insulating epoxy board 6 and the insulating PP board 2 not only realizes the electrical insulation function, but also plays a certain physical protection role for the battery cells, preventing the battery cells from being damaged due to accidental contact, and further improving the overall reliability and safety of the module. It solves the problems of battery cell displacement and loose structure caused by the lack of effective support structure in the solid-state soft-pack battery PACK module 13 under complex use environments, improves the module's ability to resist external interference, ensures the structural reliability of the battery system during long-term operation, extends the service life of the module, and reduces the risk of failure caused by structural damage.

[0040] The copper-aluminum composite sheet 5 is used as a connecting component between battery cells. Due to its good conductivity, it can ensure stable and efficient electrical connection between battery cells, reduce connection resistance, and reduce losses during power transmission, thereby improving the charging and discharging efficiency and performance of the entire PACK module 13. The way in which the screw 12 connects the pole ear 11 enhances the stability of the connection between the pole ear 11 and other components, ensures the smooth transmission of current between the battery cell and the external circuit, and enables the battery module to stably provide power support for external devices. It effectively solves the hidden dangers of electrical short circuits between battery cells and between battery cells and module housings. Through the double insulation protection of the insulating epoxy board 6 and the insulating PP board 2, as well as a reasonable electrical connection design, it avoids safety accidents such as battery performance degradation, overheating, and even fire and explosion caused by electrical failures, ensuring the electrical safety and stability of the battery module during normal charging and discharging.

[0041] The aerosol fire extinguishing device 10 enables the module to actively extinguish fires when it encounters a fire hazard caused by a serious fault such as thermal runaway. It can respond and release fire extinguishing agents in the first time, quickly suppress the spread of fire, minimize the damage to the battery cells, circuits and other components inside the module, reduce the risk of safety accidents and property losses caused by fire, and provide key emergency guarantees for the safe operation of the battery module. By setting up the aerosol fire extinguishing device 10, a timely and effective fire extinguishing solution is provided, which can quickly intervene and control the fire in the early stage of thermal runaway, prevent the further expansion of the fire, avoid the harm to surrounding equipment and personnel caused by the spread of fire, greatly reduce the safety risk of the battery module in the case of thermal runaway, and improve the safety and reliability of the entire battery system.

[0042] The reasonable arrangement of the insulating PP plate 2, the epoxy plate 1, and the export aluminum plate and other components not only optimizes the layout of the battery cells in the module, making them more regular and orderly, and facilitating production assembly and maintenance management, but also ensures the effectiveness of electrical isolation and connection between the battery cells, which helps to improve the energy density and performance consistency of the entire module, so that the solid-state soft-pack battery PACK module 13 can better meet the needs of different application scenarios. By optimizing the arrangement and connection of the battery cells, as well as the synergy of various components, the energy density and overall performance of the module are improved, so that each battery cell can operate under relatively consistent working conditions, reducing problems such as unbalanced charging and discharging and excessive capacity decay caused by differences in battery cell performance, and improving the comprehensive performance and applicability of the battery module.

[0043] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A solid-state soft-pack battery PACK module, comprising two upper limit rods (16), characterized in that: A sheet metal limit assembly (9) is provided at both ends of the two upper limit rods (16), an insulating epoxy plate (6) is provided on the inner wall of the sheet metal limit assembly (9), a lower limit rod (15) is provided on one side of the sheet metal limit assembly (9), a fixing rod (14) is provided on the side wall of the sheet metal limit assembly (9), an epoxy plate (4) is provided on one side of the fixing rod (14), a fire extinguishing device is provided on one side of the fixing rod (14), the side wall of the fire extinguishing device is connected to one side of the fixing rod (14), the inner side of the upper limit rod (16) is connected to the outer top wall of the insulating epoxy plate (6), and the inner side of the lower limit rod (15) is connected to the outer bottom wall of the insulating epoxy plate (6).

2. A solid-state soft-pack battery PACK module according to claim 1, characterized in that: The outer wall of the insulating epoxy board (6) is provided with a plurality of copper-aluminum composite sheets (5), and a PACK module (13) is provided on one side of the copper-aluminum composite sheet (5).

3. A solid-state soft-pack battery PACK module according to claim 1, characterized in that: A plurality of screws (12) are threadedly connected to the outer walls of both ends of the insulating epoxy plate (6), a pole lug (11) is provided on one side of the insulating epoxy plate (6), and the screws (12) are threadedly connected to the pole lug (11) through the insulating epoxy plate (6).

4. A solid-state soft-pack battery PACK module according to claim 1, characterized in that: A heating film (7) is arranged on the opposite side of the insulating epoxy board (6), and a second epoxy board (8) is arranged on one side of the heating film (7).

5. A solid-state soft-pack battery PACK module according to claim 1, characterized in that: Insulating PP plates (2) are symmetrically arranged at both ends of the insulating epoxy plate (6), and the side wall of the insulating PP plate (2) is arranged at one end of the PACK module (13).

6. A solid-state soft-pack battery PACK module according to claim 5, characterized in that: A side away from the insulating PP plate (2) is arranged at one end of the epoxy plate one (4), a solid-state battery cell (1) is arranged on one side of the insulating PP plate (2) and the epoxy plate one (4), and an output aluminum plate (3) is arranged on the side walls of the two solid-state battery cells (1).

7. A solid-state soft-pack battery PACK module according to claim 1, characterized in that: The fire extinguishing device is an aerosol fire extinguishing device (10), and a side wall of the aerosol fire extinguishing device (10) is connected to one side of a fixing rod (14).

8. The method for operating a solid-state soft-pack battery PACK module according to any one of claims 1 to 7, characterized in that: The following steps are involved: S1, the two upper limit rods (16) are limited at both ends by the sheet metal limit assembly (9), and the lower limit rod (15) and the fixing rod (14) are also connected to the sheet metal limit assembly (9) to form a preliminary fixing frame for the internal structure, wherein the insulating epoxy plate (6) is arranged inside for fixing and insulation; S2, a copper-aluminum composite sheet (5) is arranged on the outer wall of the insulating epoxy board (6) for electrical connection between the battery cells, one side of the copper-aluminum composite sheet (5) is connected to the PACK module (13), and the outer walls at both ends of the insulating epoxy board (6) are connected to the pole ears (11) by screws (12) to achieve electrical connection fixation; S3, insulating PP plates (2) are symmetrically arranged at both ends of the insulating epoxy plate (6), the insulating PP plates (2) are used for insulation between the cells, a solid cell (1) is arranged on the outer wall of the insulating PP plate (2), an epoxy plate (4) is arranged on one side of the solid cell (1), and the solid cells (1) on both sides are connected by an outlet aluminum plate (3); S4. An aerosol fire extinguishing device (10) is provided on one side of the fixed rod (14) to extinguish fire in emergency situations such as thermal runaway.

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