Lithium ion battery with high safety
By setting up a fire-proof material isolation battery cell group between the fire-proof patch and the BMS board in the lithium-ion battery, the problem of difficulty in dealing with thermal runaway fires in the prior art is solved, and higher safety and thermal management effects are achieved.
Patent Information
- Application Number
- CN202422274091.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-18
- Publication Date
- 2025-07-22
- Estimated Expiration
- 2034-09-18
AI Technical Summary
Safety measures for existing lithium-ion batteries are difficult to effectively deal with thermal runaway, especially to prevent fires and explosions after thermal runaway.
A case, battery cell set, BMS board and fireproof patch are provided in the lithium-ion battery. The fireproof patch is located between the battery cell set and the BMS board. It is made of fireproof material to isolate the battery cell set to prevent fire and is connected to the battery cell through the ear groove design to ensure that normal monitoring is not hindered.
Effectively reduce fire risk, improve the safety of lithium-ion batteries, prevent the spread of thermal runaway, enhance thermal management and fire protection, reduce the degree of thermal runaway of the battery cell group, and provide additional explosion-proof effects.
Smart Images
Figure CN223140985U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of lithium - ion batteries, and particularly to a lithium - ion battery with high safety. Background Art
[0002] Lithium - ion batteries are widely used in various fields due to their high energy density and light weight. However, lithium ions may experience thermal runaway under conditions such as overheating, overcharging, and short - circuiting. During the thermal runaway process of lithium - ion batteries, the reaction is intense and rapid. From the melting of the solid electrolyte interface film to the end of the thermal runaway process, the temperature rise rate can reach 10℃ / s, and the temperature change is about 400℃. When a lithium - ion battery undergoes thermal runaway, it is prone to cause fires or even explosions.
[0003] Therefore, in order to improve the safety of lithium - ion batteries, the main measures currently adopted include using battery materials with higher thermal stability; establishing a battery thermal management system to give early warnings in the early stage of thermal runaway; adding fire - extinguishing patches so that they can release fire - extinguishing agents for fire - fighting; and adding external components such as explosion - proof valves to control the internal state of lithium - ion batteries. However, the above measures are all aimed at minimizing the occurrence of thermal runaway, and it is still difficult to cope with the situation when thermal runaway has occurred (such as a lithium - ion battery catching fire). Summary of the Utility Model
[0004] The utility model provides a lithium - ion battery with high safety to solve the problem that the safety measures of lithium - ion batteries in the prior art are not perfect enough.
[0005] To solve the above - mentioned technical problems, the technical solution adopted by the utility model is to provide a lithium - ion battery with high safety, and the lithium - ion battery with high safety includes: a housing, a battery cell group, a BMS board, and a first fire - proof patch.
[0006] The housing includes a first housing and a second housing, and the first housing and the second housing can be buckled along a first direction to form an accommodation chamber; the battery cell group is located in the accommodation chamber; the BMS board is located between the battery cell group and the first housing and is connected to the battery cell group; the first fire - proof patch is covered on the battery cell group and is located between the BMS board and the battery cell group along the first direction.
[0007] The beneficial effects brought by the technical solution provided by the utility model compared with the prior art are as follows:
[0008] A lithium-ion battery is formed by arranging a battery cell group and a BMS board in the accommodation chamber formed by the snap-fitting of the first housing and the second housing. Among them, a first fireproof sticker is added between the battery cell group and the BMS board, so that when the lithium-ion battery undergoes thermal runaway or other abnormal phenomena, an isolation zone can be effectively formed, no open fire will be generated, and the fire risk will be greatly reduced. Specifically, the fireproof sticker is different from the fire-extinguishing sticker that extinguishes fire after ignition in the prior art, and its main purpose is to isolate the battery cell group to prevent ignition.
[0009] Specifically, the first fireproof sticker is made of fireproof material. As a key line of defense inside the lithium-ion battery, it can effectively improve the safety of the lithium-ion battery, provide additional protection for the thermal management and fire protection of the lithium-ion battery, and minimize the degree of thermal runaway of the battery cell group.
[0010] In some embodiments, the battery cell group includes a plurality of battery cells arranged at intervals in the second direction. The battery cells are also provided with a positive electrode tab and a negative electrode tab on one side facing the first housing along the first direction, wherein the positive electrode tab and the negative electrode tab are arranged at intervals in the third direction.
[0011] Adopting the above technical solution, the positive electrode tab and the negative electrode tab of the battery cell are located on the same side of the battery cell, which is convenient for their connection with the BMS board and reduces the assembly difficulty inside the lithium-ion battery. Among them, by arranging the first fireproof sticker on one side of the positive electrode tab and the negative electrode tab of the battery cell, heat insulation and fire prevention can be effectively achieved.
[0012] In some embodiments, the first fireproof sticker is located between the positive electrode tab and the negative electrode tab along the third direction.
[0013] Adopting the above technical solution, the first fireproof sticker is used to prevent the thermal spread of the battery cell group. Among them, the first fireproof sticker is located between adjacent positive electrode tabs and negative electrode tabs, so that the structural shape design of the first fireproof sticker is relatively simple (i.e., a cuboid shape matching the size of the battery cell group), and it can monitor the state of the battery by the BMS board under normal conditions without hindering while isolating the battery cell group.
[0014] In some embodiments, the first fireproof sticker further includes a plurality of tab slots arranged in an array along the second direction, and the plurality of tab slots respectively match the positive electrode tab and the negative electrode tab, so that when the first fireproof sticker is covered on the battery cell group, the positive electrode tab and the negative electrode tab can penetrate through the first fireproof sticker along the tab slots.
[0015] Adopting the above technical solution, by providing tab slots on the first fireproof sticker that match the positive electrode tab and the negative electrode tab, the first fireproof sticker can be clamped on the battery cell group, and only the positive electrode tab and the negative electrode tab are exposed for connection with the BMS board. Among them, the clamping design of the first fireproof sticker and the battery cell group can also further reduce the risk of the first fireproof sticker shifting.
[0016] In some embodiments, the first fireproof sticker is covered on the battery cell group along the first direction and has the same length as the battery cell group along the second direction.
[0017] With the above technical solution, since the battery cell group usually also has external components such as explosion-proof valves to control the internal state of the lithium-ion battery, when the first fireproof sticker has the same length as the battery cell group, the first fireproof sticker can completely cover the explosion-proof valve, so that when the explosion-proof valve is activated, the first fireproof sticker can immediately suppress the flame or high-temperature gas that may overflow from the explosion-proof valve, thereby enhancing the explosion-proof effect of the lithium-ion battery.
[0018] In some embodiments, a second fireproof sticker is further included. The second fireproof sticker is located between the BMS board and the first housing along the first direction, wherein the second fireproof sticker and the first fireproof sticker are arranged at intervals along the first direction.
[0019] With the above technical solution, the second fireproof sticker is located between the BMS board and the first housing, and is used to protect the housing from being damaged and deformed by high temperature caused by the thermal runaway of the battery cell group, improve the overall protection performance of the lithium-ion battery, further reduce the possibility of fire. As the second line of defense, the second fireproof sticker controls the hazards of the lithium-ion battery inside it, avoids the risk of flame spreading to the outside, and provides reaction time for external personnel to implement treatment measures.
[0020] In some embodiments, the second fireproof sticker is close to the inner wall of the first housing along the first direction and is spaced from the BMS board by a set distance.
[0021] With the above technical solution, the second fireproof sticker can be used as a heat insulation layer to prevent fire and prevent high-temperature gas from spreading to the housing. Among them, the second fireproof sticker being spaced from the BMS board by a set distance is helpful for the subsequent wiring layout and maintenance inside the accommodation space.
[0022] In some embodiments, a first sampling piece and a second sampling piece are arranged at intervals along the third direction in the battery cell group. The first sampling piece is used to connect two adjacent battery cells; the second sampling piece is used to connect the BMS board and the battery cell, wherein the second sampling piece can limit the first fireproof sticker along the first direction. The sampling piece refers to a voltage or current sampling piece. Arranging the first sampling piece and the second sampling piece helps the BMS board monitor the voltage information and current information of the battery cell group.
[0023] In some embodiments, the battery cell group further includes a battery cell bracket. The battery cell bracket includes a battery cell support plate and side plates; wherein, the battery cell support plate is arranged on both sides of a plurality of battery cells at intervals along the third direction, and the side plates extend along the second direction and are located in the middle of the battery cell support plate along the first direction.
[0024] With the above technical solution, the battery cell support serves as the physical support for the battery cell group to protect the battery cell group to be located at the correct position in the accommodation chamber and prevent mechanical damage to the battery cell group.
[0025] In some embodiments, on one side of the housing along the second direction, a first cover connected to the first housing and a second cover connected to the second housing are further protruded, wherein the first cover and the second cover are connected along the first direction to form a handle.
[0026] With the above technical solution, by protruding the first cover connected to the first housing and the second cover connected to the second housing respectively, a groove for the user to hold can be formed in the handle part, and the design of the above first cover and second cover has strong stability, which can improve the load capacity of the handle.
[0027] In some embodiments, a rubber pad is further provided on the side of the battery cell group away from the handle along the second direction.
[0028] With the above technical solution, the rubber pad, as a shock-absorbing material, is arranged on the side of the battery cell group away from the handle to reduce the damage that the battery cell group may cause due to vibration or impact during transportation. BRIEF DESCRIPTION OF THE DRAWINGS
[0029] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for the description of the embodiments will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts, where:
[0030] Figure 1 is a cross-sectional view of an embodiment of a lithium-ion battery provided by the present invention;
[0031] Figure 2 is Figure 1 a partial enlarged schematic view of part A in;
[0032] Figure 3 is a schematic internal three-dimensional structure diagram of an embodiment of a lithium-ion battery provided by the present invention Figure 1 ;
[0033] Figure 4 is a schematic internal three-dimensional structure diagram of an embodiment of a lithium-ion battery provided by the present invention Figure 2 ;
[0034] Figure 5 is Figure 4 the top view of;
[0035] Figure 6 This is a schematic diagram of the internal three-dimensional structure of an embodiment of a lithium-ion battery provided by the present utility model. Figure 3 ;
[0036] Figure 7 is Figure 6 the top view of;
[0037] Figure 8 This is a schematic diagram of the three-dimensional structure of an embodiment of a lithium-ion battery provided by the present utility model.
[0038] In the figure:
[0039] 10. Housing; 11. First housing; 110. First cover; 12. Second housing; 120. Second cover; 13. Accommodation chamber; 14. Handle; 20. Battery cell group; 21. Battery cell; 210. Positive tab; 211. Negative tab; 22. First sampling sheet; 23. Second sampling sheet; 24. Battery cell bracket; 240. Battery cell support plate; 241. Side plate; 25. Rubber pad; 26. Explosion-proof valve; 30. BMS board; 40. Fireproof sticker group; 41. First fireproof sticker; 410. Tab slot; 42. Second fireproof sticker. Detailed implementation manners
[0040] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.
[0041] For the convenience of subsequent description, before describing the specific structure of the lithium-ion battery, the present application first defines the first direction (Z), the second direction (X), and the third direction (Y) in conjunction with Figure 8 Among them, the first direction is the height direction of the lithium-ion battery when it is placed normally, for example, the Z direction; the second direction is the length direction of the lithium-ion battery when it is placed normally, for example, the X direction; the third direction is the width direction of the lithium-ion battery when it is placed normally, for example, the Y direction. In the present application, the first direction (Z), the second direction (X), and the third direction (Y) are perpendicular to each other.
[0042] It can be understood that the perpendicularity in the present application is not absolute perpendicularity. The approximate perpendicularity caused by processing errors and assembly errors (for example, the included angle between two structural features is 89.9°) is also within the scope of the perpendicularity in the present application.
[0043] Referring to Figures 1 to 2 as shown in Figure 1Shows a cross-sectional view of an embodiment of a lithium-ion battery provided by the present application; Figure 2 is Figure 1 a partial enlarged schematic view of part A in
[0044] In some embodiments, a lithium-ion battery with high safety includes: a housing 10, a battery cell group 20, a BMS board 30, and a first fireproof sticker 41. The housing 10 includes a first housing 11 and a second housing 12, and the first housing 11 and the second housing 12 can be buckled along a first direction to form a receiving chamber 13; the battery cell group 20 is located in the receiving chamber 13; the BMS board 30 is located between the battery cell group 20 and the first housing 11 and is connected to the battery cell group 20. The first fireproof sticker 41 is located between the BMS board 30 and the battery cell group 20 along the first direction.
[0045] In the embodiments of the present application, a lithium-ion battery is formed by arranging a battery cell group 20 and a BMS board 30 in a receiving chamber 13 formed by buckling a first housing 11 and a second housing 12. Among them, a first fireproof sticker 41 is added between the battery cell group 20 and the BMS board 30, so that when the lithium-ion battery undergoes thermal runaway or other abnormal phenomena, an isolation zone can be effectively formed, no open flame will be generated, and the fire risk will be greatly reduced. Specifically, the fireproof sticker is different from the fire extinguishing sticker in the prior art that extinguishes fire after ignition, and its main purpose is to isolate the battery cell group 20 to prevent ignition.
[0046] Specifically, the first fireproof sticker 41 is made of a fireproof material. As a key line of defense inside the lithium-ion battery, it can effectively improve the safety of the lithium-ion battery, provide additional protection for the thermal management and fire protection of the lithium-ion battery, and minimize the degree of thermal runaway of the battery cell group 20.
[0047] In some embodiments, a second fireproof sticker 42 is further included. The second fireproof sticker 42 is located between the BMS board 30 and the first housing 11 along the first direction, and the second fireproof sticker 42 and the first fireproof sticker 41 are arranged at intervals along the first direction.
[0048] Adopting the above technical solution, the second fireproof sticker 42 is located between the BMS board 30 and the first housing 11, and is used to protect the housing 10 from being damaged and deformed by high temperature caused by thermal runaway of the battery cell group 20, improve the overall protection performance of the lithium-ion battery, further reduce the possibility of ignition. As the second line of defense, the second fireproof sticker 42 controls the harm of the lithium-ion battery inside it, avoids the risk of flame spreading to the outside, and provides reaction time for external personnel to take treatment measures.
[0049] Exemplarily, the second fireproof sticker 42 is close to the inner wall of the first housing 11 along the first direction and is set at a certain distance from the BMS board 30. It can be used as a heat insulation layer to prevent fire and the spread of high-temperature gas to the housing 10. And the second fireproof sticker 42 being set at a certain distance from the BMS board 30 is helpful for the subsequent circuit layout and maintenance inside the accommodation space.
[0050] In addition, the first fireproof sticker 41 and the second fireproof sticker 42 are made of flame-retardant materials, such as being made of bromine-based, nitrogen-based or flame-retardant system materials such as antimony trioxide, magnesium hydroxide, aluminum hydroxide and silicon-based materials. Among them, no fire extinguishing agent is provided for the first fireproof sticker 41 and the second fireproof sticker 42 in this application.
[0051] Exemplarily, the first fireproof sticker 41 and the second fireproof sticker 42 are two key lines of defense inside the lithium-ion battery. When performing a thermal runaway experiment on them, for example, when the battery cell group 20 is overcharged to thermal runaway, when the temperature range of the battery cell 21 is between 100.8 °C and 791 °C and the continuous thermal runaway phenomenon occurs until the housing 10, the BMS board 30, and the first fireproof sticker 41 and the second fireproof sticker 42 are all carbonized, no open flame is seen during the whole process, and the overall shape of the lithium-ion battery can still remain intact. Thus, the safety of the lithium-ion battery is effectively improved, providing additional guarantee for the thermal management and fire protection of the lithium-ion battery.
[0052] See Figure 3 as shown Figure 3 shows the internal three-dimensional structure schematic diagram of an embodiment of a lithium-ion battery provided by this application Figure 1 .
[0053] In some embodiments, the battery cell group 20 includes a plurality of battery cells 21 arranged at intervals along the second direction. The battery cells 21 are also provided with a positive electrode tab 210 and a negative electrode tab 211 on one side facing the first housing 11 along the first direction, wherein the positive electrode tab 210 and the negative electrode tab 211 are arranged at intervals along the third direction.
[0054] In the embodiment of this application, the positive electrode tab 210 and the negative electrode tab 211 of the battery cell 21 are located on the same side of the battery cell 21, which is convenient for their connection with the BMS board 30 and reduces the assembly difficulty inside the lithium-ion battery. Among them, setting the first fireproof sticker 41 on one side of the positive electrode tab 210 and the negative electrode tab 211 of the battery cell 21 can effectively prevent the occurrence of fire.
[0055] In some embodiments, a first sampling sheet 22 and a second sampling sheet 23 are spaced along a third direction in the battery cell group 20. The first sampling sheet 22 is used to connect two adjacent battery cells 21; the second sampling sheet 23 is used to connect the BMS board 30 and the battery cell 21. Among them, the second sampling sheet 23 can limit the position of the first fireproof sticker 41 along a first direction. In the embodiments of the present application, the sampling sheet refers to a voltage or current sampling sheet. The arrangement of the first sampling sheet 22 and the second sampling sheet 23 helps the BMS board 30 monitor the voltage information and current information of the battery cell group 20.
[0056] In some embodiments, the battery cell group 20 is further provided with a battery cell support 24, and the battery cell support 24 includes a battery cell support plate 240 and a side plate 241; wherein, the battery cell support plates 240 are spaced along the third direction on both sides of a plurality of battery cells 21, and the side plates 241 extend along a second direction and are located in the middle of the battery cell support plates 240 along the first direction.
[0057] In the embodiments of the present application, the battery cell support 24 serves as a physical support for the battery cell group 20 to protect the battery cell group 20 to be located at the correct position in the accommodation chamber 13 and prevent mechanical damage to the battery cell group 20.
[0058] Combined Figures 4 to 5 as shown Figure 4 shows the internal three-dimensional structure schematic diagram of an embodiment of a lithium-ion battery provided by the present application Figure 2 ; Figure 5 is Figure 4 the top view of.
[0059] In some embodiments, the first fireproof sticker 41 is located between the positive electrode tab 210 and the negative electrode tab 211 along the third direction. In the embodiments of the present application, the first fireproof sticker 41 is used to prevent the battery cell group 20 from catching fire. Among them, the first fireproof sticker 41 is located between the adjacent positive electrode tab 210 and negative electrode tab 211, so that the structural shape design of the first fireproof sticker 41 is relatively simple. Exemplarily, the first fireproof sticker 41 is a cuboid shape matching the size of the battery cell group 20, so that it can prevent fire while not hindering the BMS board 30 from monitoring the state of the battery under normal conditions.
[0060] Combined Figures 6 to 7 as shown Figure 6 shows the internal three-dimensional structure schematic diagram of an embodiment of a lithium-ion battery provided by the present application Figure 3 ; Figure 7 is Figure 6 the top view of.
[0061] In some embodiments, the first fireproof sticker 41 further includes a plurality of tab slots 410 arranged in an array along the second direction. The plurality of tab slots 410 are respectively matched with the positive tab 210 and the negative tab 211, so that when the first fireproof sticker 41 is covered on the battery cell group 20, the positive tab 210 and the negative tab 211 can penetrate through the first fireproof sticker 41 along the tab slots 410.
[0062] In the embodiments of the present application, by providing the tab slots 410 on the first fireproof sticker 41 that are matched with the positive tab 210 and the negative tab 211, the first fireproof sticker 41 can be clamped on the battery cell group 20, and only the positive tab 210 and the negative tab 211 are exposed to be connected to the BMS board 30. Among them, the clamping design of the first fireproof sticker 41 and the battery cell group 20 can further reduce the risk of the first fireproof sticker 41 shifting.
[0063] In some embodiments, as shown in Figures 3 to 7 the first fireproof sticker 41 is covered on the battery cell group 20 along the first direction and is the same length as the battery cell group 20 along the second direction.
[0064] In the embodiments of the present application, since the battery cell group 20 is usually also provided with external components such as an explosion-proof valve 26 to control the internal state of the lithium-ion battery, when the first fireproof sticker 41 is the same length as the battery cell group 20, the first fireproof sticker 41 can completely cover the explosion-proof valve 26, so that when the explosion-proof valve 26 is activated, the first fireproof sticker 41 can immediately suppress the flame or high-temperature gas that may overflow from the explosion-proof valve 26, thereby enhancing the explosion-proof effect of the lithium-ion battery.
[0065] Refer to Figure 8 as shown in Figure 8 which shows a schematic perspective view of an embodiment of a lithium-ion battery provided by the present application.
[0066] In some embodiments, on one side of the housing 10 along the second direction, a first cover body 110 connected to the first housing 11 and a second cover body 120 connected to the second housing 12 are further convexly provided. Among them, the first cover body 110 and the second cover body 120 are connected along the first direction to form a handle 14.
[0067] In the embodiments of the present application, by convexly providing the first cover body 110 connected to the first housing 11 and the second cover body 120 connected to the second housing 12, a groove for the user to hold by hand can be formed in the handle 14 part, and the design of the first cover body 110 and the second cover body 120 has strong stability and can improve the load-bearing capacity of the handle 14.
[0068] In some embodiments, as shown in Figure 3As shown in the figure, a rubber pad 25 is further provided on the side of the battery cell group 20 away from the handle 14 along the second direction. In the embodiment of the present application, the rubber pad 25 is used as a shock-absorbing material and is arranged on the side of the battery cell group 20 away from the handle 14 to reduce the damage that the battery cell group 20 may cause due to vibration or impact during transportation.
[0069] The above are only the embodiments of the present utility model, and do not limit the patent scope of the present utility model. Any equivalent structure or equivalent process transformation made by using the content of the specification and drawings of the present utility model, or directly or indirectly applied in other related technical fields, shall be within the protection scope of the present utility model.
Claims
1. A lithium-ion battery with high safety, characterized in that, Comprising: A housing, the housing includes a first housing and a second housing, and the first housing and the second housing can be snapped together along a first direction to form a receiving chamber; A battery cell group, the battery cell group is located in the receiving chamber; A BMS board, the BMS board is located between the battery cell group and the first housing and is connected to the battery cell group; A first fireproof sticker, the first fireproof sticker is covered on the battery cell group and is located between the BMS board and the battery cell group along the first direction.
2. The highly safe lithium-ion battery according to claim 1, characterized in that The battery cell group includes a plurality of battery cells arranged at intervals along a second direction. The battery cells are also provided with a positive electrode tab and a negative electrode tab on one side facing the first housing along the first direction. Among them, the positive electrode tab and the negative electrode tab are arranged at intervals along a third direction.
3. The highly safe lithium ion battery according to claim 2, characterized in that, The first fireproof sticker is located between the positive electrode tab and the negative electrode tab along the third direction.
4. The highly safe lithium ion battery according to claim 2, wherein, The first fireproof sticker further includes a plurality of tab slots arranged in an array along the second direction. The plurality of tab slots respectively match the positive electrode tab and the negative electrode tab, so that when the first fireproof sticker is covered on the battery cell group, the positive electrode tab and the negative electrode tab can penetrate the first fireproof sticker along the tab slots.
5. The lithium-ion battery with high safety according to any one of claims 1 to 4, characterized in that, The first fireproof sticker is covered on the battery cell group along the first direction and is the same length as the battery cell group along the second direction.
6. The highly secure lithium-ion battery according to claim 1, wherein, It further includes a second fireproof sticker. The second fireproof sticker is located between the BMS board and the first housing along the first direction. Among them, the second fireproof sticker and the first fireproof sticker are arranged at intervals along the first direction.
7. The highly secure lithium-ion battery according to claim 6, characterized in that, The second fireproof sticker is close to the inner wall of the first housing along the first direction and is spaced from the BMS board by a set distance.
8. The highly safe lithium-ion battery according to claim 2, wherein, The battery cell group is provided with a first sampling piece and a second sampling piece at intervals along the third direction. The first sampling piece is used to connect two adjacent battery cells; the second sampling piece is used to connect the BMS board and the battery cell. Among them, the second sampling piece can limit the first fireproof sticker along the first direction.
9. The highly secure lithium-ion battery according to claim 2, wherein, The battery cell group is further provided with a battery cell bracket. The battery cell bracket includes a battery cell support plate and a side plate; among them, the battery cell support plate is arranged at intervals on both sides of the plurality of battery cells along the third direction, and the side plate extends along the second direction and is located in the middle of the battery cell support plate along the first direction.
10. The highly secure lithium-ion battery according to claim 1, characterized in that, One side of the housing along the second direction is further convexly provided with a first cover body connected to the first housing and a second cover body connected to the second housing. Among them, the first cover body and the second cover body are connected along the first direction to form a handle.