Battery cell, battery module, and battery pack

Abstract

The utility model relates to soft battery technology field discloses a battery unit, battery module and battery package, battery unit includes: electric core and first protection subassembly, one end of electric core forms exhaust end, first protection subassembly includes protection structure, protection structure is provided with two, two protection structures are respectively arranged in the opposite sides of electric core, two protection structures are bonded close to one end of exhaust end, two protection structures and the heat insulation space are formed between electric core, and exhaust end is arranged in heat insulation space. Two protection structures of the utility model are respectively arranged in the opposite sides of electric core, can insulate the heat of electric core and outside, prevent the heat spread phenomenon from happening, after the heat runaway appears, the first end of two protection structures is all or partial breakaway separation by gas, to realize quick exhaust.

Description

Technical Field

[0001] This utility model relates to the field of soft-pack battery technology, specifically to battery cells, battery modules, and battery packs. Background Technology

[0002] Portable pouch battery packs are widely used in smartphones, laptops, electric bicycles, and other fields due to their high energy density, good cycle performance, and flexible design. However, as battery energy density continues to increase, battery safety issues, especially thermal runaway, are becoming increasingly prominent, posing a major challenge to the development and application of battery technology.

[0003] Thermal runaway refers to the uncontrolled chemical reaction within a battery cell caused by overheating, overcharging, short circuits, or other factors, leading to a rapid increase in cell temperature and potentially causing a fire or explosion. Under the high temperatures of a thermally runaway cell, other normal cells in the battery pack may also overheat and run away, causing the thermal runaway to spread. However, traditional battery pack designs often neglect protection against thermal runaway, failing to control and isolate the situation in time, leading to safety accidents. Utility Model Content

[0004] In view of this, the present invention provides a battery cell, a battery module, and a battery pack to solve the problem that the battery cell cannot be controlled and isolated in a timely manner when thermal runaway occurs.

[0005] In a first aspect, the present invention provides a battery cell, comprising: a battery cell and a first protective assembly, wherein one end of the battery cell forms an exhaust end; the first protective assembly includes a protective structure, wherein two protective structures are provided, the two protective structures are respectively provided on opposite sides of the battery cell, the ends of the two protective structures near the exhaust end are bonded together, a heat insulation space is formed between the two protective structures and the battery cell, and the exhaust end is provided within the heat insulation space.

[0006] Beneficial effects: The two protective structures are respectively set on opposite sides of the battery cell, which can isolate the battery cell from the heat of the outside world and prevent the heat spread phenomenon; after thermal runaway occurs, the first end of the two protective structures is completely or partially blown open by the gas to achieve rapid exhaust.

[0007] In one optional embodiment, the protective structure includes a first fireproof component and a heat insulation component. The heat insulation component abuts against the battery cell, and the first fireproof component abuts against the side of the heat insulation component away from the battery cell. The ends of the two heat insulation components near the exhaust end are bonded together, and the ends of the two first fireproof components near the exhaust end are bonded together.

[0008] In one optional embodiment, the first protective component further includes a second fireproof component, which is bonded to two of the first fireproof components and covers the bonding area of ​​the two first fireproof components.

[0009] Beneficial effects: By installing a second fireproof component, the high-temperature external gas is further prevented from entering the insulation space, thus improving the insulation effect and preventing heat spread.

[0010] In one alternative embodiment, the battery cell further includes a clamping member that clamps the end of the cell away from the exhaust end, and the clamping member abuts against both the cell and the protective structure.

[0011] Beneficial effects: By setting up clamping components, the venting of the battery cell is only discharged from the venting end, preventing high-temperature ejected materials from spreading inside the battery pack and ensuring the overall safety performance of the battery pack.

[0012] Secondly, this utility model also provides a battery module, including the aforementioned battery cells and a first buffer member. The battery cells are arranged in a plurality of units, and the plurality of battery cells are arranged sequentially to form a battery row. The first buffer member is disposed between two adjacent battery cells and abuts against the first protective component.

[0013] Beneficial effects: The first buffer component provides stable support between battery cells, buffering the squeezing or impact forces between the cells and ensuring the stability and safety of the battery module.

[0014] In one optional embodiment, the battery module further includes a circuit board and a third buffer. The circuit board is disposed at one end of the battery pack and away from the exhaust end. The circuit board is connected to the battery cell. The third buffer is disposed on the side of the circuit board away from the exhaust end and abuts against the circuit board.

[0015] Beneficial effects: The circuit board is positioned away from the exhaust end of the battery cell, thereby achieving thermal-electric separation, reducing the impact of thermal runaway on surrounding battery cells, and lowering the risk of chain reactions caused by thermal runaway; by setting a third buffer, the battery module is supported as a whole after it is placed in the battery pack housing, ensuring the stability and reliability of the battery module within the housing.

[0016] In one optional embodiment, the battery module further includes a second protective component, which is disposed on one side of the battery pack along the battery cell arrangement direction and abuts against the battery cell, and the second protective component has an adhesive quantity detection port.

[0017] Beneficial effect: The amount of glue poured is detected by the glue quantity detection port on the second protective component, ensuring that the amount of glue poured is within the qualified range.

[0018] In one optional embodiment, the second protective component includes a partition and a fourth buffer, two partitions are spaced apart, the fourth buffer is disposed between the two partitions, and the adhesive quantity detection port is provided on at least one of the partitions disposed on the side of the fourth buffer away from the battery cell.

[0019] Thirdly, this utility model also provides a battery pack, including the aforementioned battery module and housing. The housing includes a box and a pressure plate. The pressure plate is disposed inside the box. The box has a receiving cavity and a ventilation cavity, which are connected. The battery module is disposed in the receiving cavity. The pressure plate has a glue quantity detection hole. The box has a glue filling port and a vent hole. The vent hole is connected to the ventilation cavity, and the glue filling port is connected to the receiving cavity.

[0020] Beneficial effects: By opening a glue quantity detection hole on the pressure plate, glue filling and glue overflow detection can be achieved, ensuring glue filling quality.

[0021] In one optional embodiment, the outer casing further includes a filter structure disposed within the ventilation chamber and connected to the housing. The filter structure divides the ventilation chamber into a first sub-chamber and a second sub-chamber, the first sub-chamber and the second sub-chamber being in communication. The first sub-chamber is in communication with the receiving cavity, and the second sub-chamber is in communication with the vent.

[0022] Beneficial effects: By setting up a filtration structure, the ejected material from the battery cell can be filtered, preventing harmful substances from being directly discharged outside the enclosure. Attached Figure Description

[0023] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0024] Figure 1 This is a schematic diagram of the battery cell structure according to an embodiment of the present invention;

[0025] Figure 2 This is a schematic diagram of the battery module structure according to an embodiment of the present invention;

[0026] Figure 3 This is a schematic diagram of the battery module without the second buffer in an embodiment of the present invention;

[0027] Figure 4 for Figure 3A magnified view of part A in the diagram;

[0028] Figure 5 for Figure 3 A magnified view of part B in the diagram;

[0029] Figure 6 This is a structural schematic diagram of the battery module from another angle according to an embodiment of the present invention;

[0030] Figure 7 This is a partial structural schematic diagram of the battery pack according to an embodiment of the present utility model;

[0031] Figure 8 This is a partial structural diagram of the outer shell of an embodiment of the present utility model;

[0032] Figure 9 This is a schematic diagram of the overall structure of the outer shell of an embodiment of this utility model.

[0033] Explanation of reference numerals in the attached figures:

[0034] 10. Battery cell; 11. Main body; 12. Encapsulation part; 13. Electrode; 14. Exhaust end; 20. First protective component; 21. Protective structure; 211. First fireproof component; 212. Heat insulation component; 22. Second fireproof component; 23. Heat insulation space; 30. Clamping component; 40. First buffer component; 50. Second buffer component; 60. Circuit board; 61. Copper busbar; 70. Third buffer component; 80. Second protective component; 81. Partition plate; 811. Adhesive quantity detection port; 82. Fourth buffer component; 91. Housing; 911. Front panel; 912. Rear panel; 913. Side panel; 9131. Mounting slot; 914. Top cover plate; 915. Bottom cover plate; 92. Pressure plate; 921. Adhesive quantity detection hole; 93. Filter structure; 94. Receiving cavity; 95. Ventilation cavity; 951. First sub-cavity; 952. Second sub-cavity; 96. Vent hole; 97. Adhesive filling port; 98. Ventilation membrane; X, First direction; Y, Second direction; Z, Third direction. Detailed Implementation

[0035] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0036] The following is combined with Figures 1 to 9 The following describes embodiments of the present invention.

[0037] It should be noted that the description and accompanying drawings of this embodiment introduce a first direction X, a second direction Y, and a third direction Z that intersect each other in order to better understand the structure of this utility model embodiment.

[0038] According to an embodiment of the present invention, in a first aspect, a battery cell is provided, including a battery cell 10 and a first protective component 20. The battery cell 10 forms an exhaust end 14 at one end along a third direction Z. The first protective component 20 includes a protective structure 21, and two protective structures 21 are provided. The two protective structures 21 are respectively provided on opposite sides of the battery cell 10 along a first direction X. The ends of the two protective structures 21 near the exhaust end 14 are bonded together, and a heat insulation space 23 is formed between the two protective structures 21 and the battery cell 10. The exhaust end 14 is disposed in the heat insulation space 23.

[0039] In the battery module of this embodiment, two protective structures 21 are respectively disposed on opposite sides of the cell 10, which can isolate the cell 10 from the heat of the outside world and prevent the thermal runaway phenomenon. After thermal runaway occurs, the first ends of the two protective structures 21 are completely or partially blown open by the gas to achieve rapid exhaust.

[0040] It should be noted that in the related technologies, in order to improve the energy density of the battery, the battery electrode group occupies too much module space, thereby reducing the protection structure 21 and neglecting the protection against thermal runaway. When a cell 10 in the battery pack experiences thermal runaway, thermal propagation is likely to occur, causing more cells 10 to run away and fail.

[0041] Therefore, in this embodiment, a protective structure 21 is provided on each side of the battery cell 10 along the first direction X to improve the thermal protection capability of the battery cell 10, isolate the battery cell 10 from the heat of the outside world, thereby reducing the occurrence of thermal runaway in more battery cells 10 and avoiding the occurrence of thermal propagation problems.

[0042] Specifically, such as Figure 1 The battery cell is shown in its normal state. The two protective structures 21 are bonded together at the ends near the exhaust end 14 to achieve a seal.

[0043] It should be noted that when the cell 10 in the battery cell experiences thermal runaway, the high-temperature flue gas generated by the thermal runaway will be discharged from the exhaust end 14 to the heat insulation space 23. The high-temperature flue gas will cause the first ends of the two protective structures 21 to be completely or partially blown apart by the gas, thereby venting and depressurizing the battery cell to the outside.

[0044] Specifically, such as Figure 4 and Figure 5As shown, the battery cell 10 includes a main body 11 and a packaging part 12. The main body 11 extends to both ends of the third direction Z to form the packaging part 12. Specifically, in this embodiment, the battery cell 10 is a soft-pack battery cell 10, which is formed by wrapping the electrode group with an aluminum-plastic film. The aluminum-plastic film wraps around the outside of the electrode group and forms sealing edges at both ends of the electrode group along the third direction Z. The aluminum-plastic film sealing edges serve as the packaging part 12 in this embodiment.

[0045] Furthermore, such as Figure 4 As shown, each protective structure 21 includes a first fireproof component 211 and a heat insulation component 212. The heat insulation component 212 abuts against the battery cell 10, and the first fireproof component 211 abuts against the side of the heat insulation component 212 away from the battery cell 10. The ends of the two heat insulation components 212 near the exhaust end 14 are bonded together, and the ends of the two first fireproof components 211 near the exhaust end 14 are bonded together.

[0046] Specifically, the first fireproof component 211 is mica paper, and the heat insulation component 212 is aerogel. When thermal runaway occurs, the encapsulation part 12 exhausts the two heat insulation components 212 near the exhaust end 14 to achieve rapid exhaust.

[0047] Furthermore, such as Figure 4 As shown, the first protective component 20 also includes a second fireproof component 22, which is bonded to two first fireproof components 211 and covers the bonding area of ​​the two first fireproof components 211. By setting the second fireproof component 22, external high-temperature gas is further prevented from entering the heat insulation space 23, thereby improving the heat insulation effect and preventing heat spread.

[0048] Specifically, the second fireproof component 22 is mica paper.

[0049] It should be noted that when high-temperature ejected material from outside the battery cell splashes onto the bonding ends of the two protective structures 21, it can easily melt the bonding joint of the two heat insulation components 212 and enter the heat insulation space 23, affecting the normal operation of the battery cell 10 and causing heat spread. Therefore, a second fireproof component 22 is covered on the outside of the bonding joint of the first fireproof component 211 and the heat insulation component 212 to isolate the external high-temperature ejected material.

[0050] It should be noted that the adhesion between the second fireproof component 22 and the first fireproof component 211 is less than the impact force of the high-temperature ejected material, so as to ensure that after the battery cell 10 thermally runs away, the high-temperature ejected material can smoothly push open the second fireproof component 22 to release the exhaust.

[0051] In one embodiment, such as Figure 1As shown, the battery cell also includes a clamping member 30, which clamps the end of the cell 10 furthest from the exhaust end 14 along the third direction Z. The clamping member 30 abuts against both the cell 10 and the protective structure 21. By setting the clamping member 30, the exhaust from the cell 10 is ensured to be discharged only through the exhaust end 14, preventing high-temperature ejected materials from spreading inside the battery pack and ensuring the overall safety performance of the battery pack.

[0052] Specifically, the clamping member 30 is made of foam and is disposed on opposite sides of the encapsulation part 12 along the first direction X. The clamping member 30 abuts against the main body part 11.

[0053] According to an embodiment of the present invention, in a second aspect, a battery module is provided, including the aforementioned battery cells and a first buffer member 40. A plurality of battery cells are arranged sequentially along a first direction X to form a battery pack. The first buffer member 40 is disposed between two adjacent battery cells and abuts against a first protective component 20. The first buffer member 40 provides stable support between the battery cells 10, buffers the squeezing or impact forces between the battery cells 10, and ensures the stability and safety of the battery module.

[0054] Specifically, the first buffer 40 is foam, which utilizes the elasticity of the foam to ensure the stability of the battery module.

[0055] Furthermore, such as Figure 2 As shown, the battery module also includes a second buffer 50. Two second buffers 50 are provided, each positioned on one side of the battery pack along the second direction Y, away from the clamping member 30. The second buffers 50 provide buffer protection for both sides of the battery module along the second direction Y, further improving the stability and safety of the battery module.

[0056] It should be noted that at least one second buffer 50 is provided on each side of the battery pack along the second direction Y. In other alternative embodiments, the number of second buffers 50 can be adjusted as appropriate.

[0057] Specifically, in this embodiment, the second buffer 50 includes ceramic silicone foam.

[0058] Furthermore, the second buffer 50 also includes mica paper, which is attached to the side of the ceramic silicone foam away from the battery cell 10 to improve the heat insulation capability of the second buffer 50.

[0059] In one embodiment, such as Figure 6 and Figure 7As shown, the battery module also includes a circuit board 60 and a third buffer 70. The circuit board 60 is located at one end of the battery pack and away from the exhaust end 14. The circuit board 60 is connected to the battery cell 10. The third buffer 70 is located on the side of the circuit board 60 away from the exhaust end 14 and abuts against the circuit board 60. The circuit board 60 is located away from the exhaust end 14 of the battery cell 10, thereby achieving thermal-electric separation, reducing the impact of thermal runaway on the surrounding battery cells 10, and reducing the risk of chain reactions caused by thermal runaway. By setting the third buffer 70, when the battery module is placed into the battery pack housing 91, the entire battery module is supported, ensuring the stability and reliability of the battery module within the housing 91.

[0060] Specifically, such as Figure 5 As shown, the clamping member 30 clamps the encapsulation portion 12 away from the exhaust end 14 so that the gas generated by thermal runaway can be discharged from the exhaust end 14. The tab 13 of the cell 10 extends from the encapsulation portion 12 near the clamping member 30 and is electrically connected to the circuit board 60 to realize the electrical connection of multiple cells 10. Therefore, the electrical connection position of the cell 10 is far away from the exhaust end 14 of the cell 10, which reduces the probability of failure such as high voltage arcing and sparking inside the battery module during thermal runaway and avoids secondary damage caused by thermal runaway.

[0061] Furthermore, such as Figure 2 As shown, two copper busbars 61 are provided on the circuit board 60. The two copper busbars 61 are the total positive copper busbar 61 and the total negative copper busbar 61 of the battery module, which are used to make electrical connections between the battery module and other structures.

[0062] Specifically, the third cushioning element 70 is made of foam, such as... Figure 2 and Figure 6 As shown, the third buffer 70 is provided with two intervals.

[0063] Of course, in other alternative implementations, the number and position of the third buffer 70 can be adjusted according to the actual situation.

[0064] In one embodiment, such as Figure 6 As shown, the battery module also includes a second protective component 80, which is disposed on one side of the battery pack along the battery cell arrangement direction and abuts against the battery cells. The second protective component 80 has a glue quantity detection port 811. The glue quantity detection port 811 on the second protective component 80 is used to detect the glue quantity to ensure that the glue quantity is within the qualified range.

[0065] Furthermore, such as Figure 6 As shown, the second protective component 80 includes a partition 81 and a fourth buffer 82. Two partitions 81 are spaced apart, and the fourth buffer 82 is disposed between the two partitions 81. A glue quantity detection port 811 is provided on the partition 81 disposed on the side of the fourth buffer 82 away from the battery cell.

[0066] Specifically, such as Figure 6 As shown, the position of the fourth buffer 82 corresponding to the glue quantity detection port 811 has also been cut to facilitate better observation of the glue quantity.

[0067] It should be noted that after the battery module is placed into the battery pack casing, glue will be poured into the casing to ensure the connection stability between the battery module and the casing. In order to avoid excessive glue pouring, a glue quantity detection port 811 is set on the opposite side of the glue pouring port 97 to detect the glue quantity and ensure that the glue quantity is within the qualified range.

[0068] It should be noted that the heat insulation component 212 and the fireproof component in this embodiment can also be made of materials with high temperature resistance, fireproof and heat insulation properties, such as fireproof coatings, fireproof pads, etc.

[0069] According to an embodiment of this utility model, in a third aspect, a battery pack is also provided, including the aforementioned battery module and a housing. The housing includes a casing 91 and a pressure plate 92, with the pressure plate 92 disposed within the casing 91. The casing 91 contains a receiving cavity 94 and a ventilation cavity 95, which are connected. The battery module is disposed within the receiving cavity 94. A glue quantity detection hole 921 is provided on the pressure plate 92, corresponding to a glue quantity detection port 811. A glue filling port 97 and a vent hole 96 are provided on the casing 91, with the vent hole 96 connected to the ventilation cavity 95 and the glue filling port 97 connected to the receiving cavity 94. By providing the glue quantity detection hole 921 on the pressure plate 92, glue filling and overflow detection are achieved, ensuring glue filling quality.

[0070] Specifically, the glue filling port 97 is located on the opposite side of the glue quantity detection port 811. That is, when the battery module is placed in the receiving cavity 94, the glue quantity detection port 811 is away from the glue filling port 97 to ensure that the battery module is fully glued.

[0071] Specifically, such as Figure 8 As shown, the housing 91 includes a front panel 911, a rear panel 912, side panels 913, an upper cover 914, and a lower cover 915. There are two side panels 913, and each of the other structures has one. The two side panels 913 are spaced apart and are connected to the front panel 911, rear panel 912, upper cover 914, and lower cover 915 respectively by fasteners to form the housing 91. Ventilation holes 96 are provided on the front panel 911, and glue filling ports 97 are provided on the rear panel 912.

[0072] Furthermore, such as Figure 8 As shown, a mounting groove 9131 is provided on the side plate 913, and a plug-in structure is formed on the pressure plate 92. The plug-in structure of the pressure plate 92 is inserted into the mounting groove 9131 and fixed by fasteners.

[0073] Furthermore, such as Figure 7 As shown, the height of the pressure plate 92 along the third direction Z is lower than the height of the front plate 911, the rear plate 912, and the side plate 913 along the third direction Z, thereby realizing the connection between the receiving cavity 94 and the ventilation cavity 95.

[0074] Furthermore, such as Figure 7 As shown, the housing 91 also includes a breathable membrane 98, which covers the vent 96 to ensure that gas can be discharged while preventing water and dirt from entering the housing 91.

[0075] It should be noted that the side panel 913 can also be connected to the front panel 911, rear panel 912, upper cover 914, and lower cover 915 by welding, riveting, or other connection methods.

[0076] In one embodiment, such as Figure 8 As shown, the outer casing also includes a filter structure 93, which is disposed within the ventilation chamber 95 and connected to the housing 91. The filter structure 93 divides the ventilation chamber 95 into a first sub-chamber 951 and a second sub-chamber 952, which are connected. The first sub-chamber 951 is connected to the receiving chamber 94, and the second sub-chamber 952 is connected to the vent hole 96. By setting the filter structure 93, the ejected material from the battery cell 10 is filtered, preventing harmful substances from being directly discharged outside the housing 91.

[0077] Specifically, in this embodiment, the filter structure 93 is a steel filter screen with a plurality of filter holes to filter the ejected material from the battery cell 10.

[0078] Specifically, when the battery cell 10 experiences thermal runaway, the ejected material from the battery cell 10 enters the first sub-cavity 951 of the ventilation cavity 95 from the receiving cavity 94, then enters the second sub-cavity 952 after being filtered by the filter structure 93, and is discharged outward through the vent 96.

[0079] Furthermore, such as Figure 7 As shown, the exhaust end 14 of the battery module is located away from the upper cover plate 914. It can be understood that the clamping member 30 of the battery module is located close to the upper cover plate 914, that is, the exhaust end 14 of the battery module is located downward and the clamping member 30 is located upward. The first protective component 20 of the battery module protrudes from the pressure plate 92 in the third direction Z. The ejected material of the cell 10 passes through the receiving cavity 94, crosses the pressure plate 92, and enters the first sub-cavity 951 of the ventilation cavity 95.

[0080] Although embodiments of the present invention have been described in conjunction with the accompanying drawings, those skilled in the art can make various modifications and variations without departing from the spirit and scope of the present invention, and such modifications and variations all fall within the scope defined by the present invention.

Claims

1. A battery cell, characterized in that, include: A battery cell (10), one end of which forms an exhaust end (14); The first protective component (20) includes a protective structure (21). Two protective structures (21) are provided, and the two protective structures (21) are respectively provided on opposite sides of the battery cell (10). The two protective structures (21) are bonded together at one end near the exhaust end (14). A heat insulation space (23) is formed between the two protective structures (21) and the battery cell (10). The exhaust end (14) is provided in the heat insulation space (23).

2. The battery cell according to claim 1, characterized in that, The protective structure (21) includes a first fireproof component (211) and a heat insulation component (212). The heat insulation component (212) abuts against the battery cell (10). The first fireproof component (211) abuts against the side of the heat insulation component (212) away from the battery cell (10). The two heat insulation components (212) are bonded together at one end near the exhaust end (14). The two first fireproof components (211) are bonded together at one end near the exhaust end (14).

3. The battery cell according to claim 2, characterized in that, The first protective component (20) further includes a second fireproof component (22), which is bonded to two of the first fireproof components (211) respectively and covers the bonding area of ​​the two first fireproof components (211).

4. The battery cell according to any one of claims 1-3, characterized in that, The battery cell also includes a clamping member (30) which clamps the other end of the cell (10) away from the exhaust end (14) and abuts against the cell (10) and the protective structure (21) respectively.

5. A battery module, characterized in that, include: The battery cell according to any one of claims 1-4, wherein a plurality of battery cells are provided, and the plurality of battery cells are arranged sequentially to form a battery pack; A first buffer (40) is disposed between two adjacent battery cells and abuts against the first protective component (20).

6. The battery module according to claim 5, characterized in that, The battery module also includes a circuit board (60) and a third buffer (70). The circuit board (60) is disposed at one end of the battery pack and away from the exhaust end (14). The circuit board (60) is connected to the battery cell (10). The third buffer (70) is disposed on the side of the circuit board (60) away from the exhaust end (14) and abuts against the circuit board (60).

7. The battery module according to claim 5, characterized in that, The battery module further includes a second protective component (80), which is disposed on one side of the battery pack along the battery cell arrangement direction and abuts against the battery cell. The second protective component (80) has an adhesive quantity detection port (811).

8. The battery module according to claim 7, characterized in that, The second protective component (80) includes a partition (81) and a fourth buffer (82). Two partitions (81) are spaced apart, and the fourth buffer (82) is disposed between the two partitions (81). The glue quantity detection port (811) is provided on at least one of the partitions (81) disposed on the side of the fourth buffer (82) away from the battery cell.

9. A battery pack, characterized in that, include: The battery module according to any one of claims 5-8; The outer casing includes a housing (91) and a pressure plate (92). The pressure plate (92) is disposed inside the housing (91). The housing (91) has a receiving cavity (94) and a ventilation cavity (95) that are connected. The battery module is disposed inside the receiving cavity (94). The pressure plate (92) has a glue quantity detection hole (921). The housing (91) has a glue filling port (97) and a vent hole (96) that are connected to the ventilation cavity (95). The glue filling port (97) is connected to the receiving cavity (94).

10. The battery pack according to claim 9, characterized in that, The outer shell also includes a filter structure (93), which is disposed in the ventilation chamber (95) and connected to the housing (91). The filter structure (93) divides the ventilation chamber (95) into a first sub-chamber (951) and a second sub-chamber (952). The first sub-chamber (951) and the second sub-chamber (952) are connected. The first sub-chamber (951) is connected to the receiving cavity (94), and the second sub-chamber (952) is connected to the vent (96).

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