Battery module and battery pack

Abstract

The utility model relates to soft package battery technical field discloses a battery module and battery package, and battery module includes electric core unit, circuit board and first protection subassembly, and electric core unit includes the tab, and at least one electric core unit is arranged along first direction and forms at least one electric core row, and at least one electric core row is arranged along first direction and forms the electric core group, circuit board sets up in the electric core group and is close to the one end of tab along third direction, and is electrically connected with tab, and the first fire -retardant part of first protection subassembly covers at least in the junction of tab and circuit board. The utility model high temperature flue gas generated when electric core unit thermal runaway is discharged by the end of tab, and the first fire -retardant part is covered in the junction of tab and circuit board, and the high temperature flue gas of thermal runaway electric core unit eruption is blocked, improves the heat -insulating capacity of tab place, realizes thermal -electric separation, prevents the occurrence of heat spread phenomenon.

Description

Technical Field

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

[0002] With the rapid development of new energy bicycles, the safety of small power battery packs has received increasing attention. Under abnormal conditions such as overcharging, over-discharging, short circuits, or mechanical damage, batteries may experience thermal runaway, which means that the internal temperature of the battery rises sharply, triggering a chain reaction that leads to battery combustion or explosion, seriously threatening personal safety and property safety.

[0003] In existing technologies, battery pack thermal management mainly focuses on improving the battery's thermal stability and heat dissipation capacity. However, the impact of high temperatures on electrical performance stability is often overlooked, and high temperatures can easily exacerbate the risk of thermal runaway after electrical connections heat up. Utility Model Content

[0004] In view of this, the present invention provides a battery module and battery pack to solve the problem that high temperature can easily aggravate the risk of thermal runaway after the electrical connection heats up.

[0005] In a first aspect, this utility model provides a battery module having intersecting first, second, and third directions, comprising: a battery cell unit, a circuit board, and a first protective component. The battery cell unit includes a tab, and a plurality of battery cell units are provided. At least one of the battery cell units is arranged along the first direction to form at least one cell row, and at least one cell row is arranged along the first direction to form a cell group. The circuit board is disposed at one end of the cell group along the third direction near the tab and is electrically connected to the tab. The first protective component includes a first flame-retardant element, which at least covers the connection between the tab and the circuit board.

[0006] Beneficial effects: When the battery cell unit experiences thermal runaway, the high-temperature fumes generated are discharged from the end where the tab is located. By covering the connection between the tab and the circuit board with the first flame-retardant component, the high-temperature fumes emitted by the thermally runaway battery cell unit are blocked, improving the heat insulation capacity at the tab, achieving thermoelectric separation, and preventing the occurrence of heat propagation.

[0007] In one alternative embodiment, the first protective component further includes a first fireproof element disposed on opposite sides of the battery cell and abutting against the battery cell, and the tab extends along the third direction between two adjacent first fireproof elements.

[0008] Beneficial effects: The first fireproof component provides heat insulation protection for the electrode tabs, further realizing the thermal and electrical separation of the cell unit, preventing heat spread, and improving the safety performance of the battery module.

[0009] In one optional embodiment, the first fireproof component includes an abutment portion and a connecting portion. Two abutment portions are provided, each abutting portion is connected to both ends of the connecting portion, and each abutting portion abuts against two adjacent battery cells.

[0010] Beneficial effects: The first fireproof component is formed by connecting the abutment part and the connecting part, which has a simple structure and is easy to inspect and replace.

[0011] In one optional embodiment, the circuit board has a notch, the electrode includes a main body section and a bent section, the main body section is connected to the bent section, the main body section passes through the notch, the bent section is set at a predetermined angle to the main body section and is located at the end of the circuit board away from the cell array, and is electrically connected to the circuit board, and the first flame retardant member covers the bent section.

[0012] Beneficial effects: By creating notches on the circuit board, the exhaust area is increased, ensuring rapid exhaust in the event of thermal runaway; at the same time, the heat generated by the circuit board is reduced, thus reducing the impact of heat on electrical connections.

[0013] In one optional embodiment, the battery module further includes a potting structure, which is connected to at least one end of the cell assembly away from the tab along a third direction; the potting structure is also disposed on both sides of the cell assembly along the first direction, and / or on both sides along the second direction.

[0014] Beneficial effects: The potting structure is set at the end of the cell assembly away from the tab in the third direction, ensuring that the high-temperature fumes generated during thermal runaway of the cell unit are discharged from the end where the tab is located; by setting the potting structure on the periphery of the cell assembly in the third direction, the exhaust direction of the cell unit is further limited, preventing the high-temperature gas from spreading from the periphery of the cell assembly in the third direction and preventing thermal spread.

[0015] In one alternative embodiment, the battery module further includes a second protective component disposed between two adjacent cell arrays.

[0016] Beneficial effects: By setting a second protective component between two adjacent cell blocks, heat insulation is provided for adjacent cell blocks, preventing the high-temperature fumes emitted due to thermal runaway from causing overheating of adjacent cell blocks and resulting in heat spread, thereby improving the safety performance of the battery module.

[0017] In one optional embodiment, the second protective component includes a second fireproof element and a heat insulation element, wherein two second fireproof elements are spaced apart along the first direction, and the heat insulation element is disposed between the two second fireproof elements.

[0018] Beneficial effects: The insulation component provides thermal insulation to adjacent cell arrays, and the second fireproof component protects the insulation component from flames generated during thermal runaway.

[0019] In one alternative embodiment, the second protective component further includes a first buffer member disposed on the side of the second fireproof component away from the heat insulation component along the first direction.

[0020] Beneficial effects: The first buffer buffers the squeezing force between adjacent cell blocks, improving the safety of the cell blocks.

[0021] In one optional embodiment, the circuit board includes a board body and a busbar, the busbar being connected to the board body and the board body being connected to the electrode tab; the first protective component further includes a second flame-retardant element, the second flame-retardant element covering the connection between the busbar and the board body; and / or, the battery module further includes a third flame-retardant element, at least two of the third flame-retardant elements are provided, and at least one of the third flame-retardant elements is provided on each side of the cell group along the second direction; and / or, the battery module further includes a third protective component, two of the third protective components are provided, and the two third protective components are respectively provided on both sides of the cell group along the first direction.

[0022] Beneficial effects: By covering the connection between the busbar and the plate with a second flame-retardant component, high-temperature fumes are isolated from the busbar, further achieving thermal-electric separation and ensuring the safety of the battery module; by using a third flame-retardant component to provide heat insulation protection for the second direction of the cell assembly, the safety performance of the battery module is further improved; after the battery module is placed into the battery pack housing, the third protective component supports the entire battery module, ensuring the stability and reliability of the battery module within the housing.

[0023] Secondly, this utility model also provides a battery pack, including the aforementioned battery module and housing, wherein a receiving cavity is formed inside the housing, and the battery module is disposed within the receiving cavity. Attached Figure Description

[0024] 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.

[0025] Figure 1 This is a schematic diagram of the overall structure of the battery module according to an embodiment of the present utility model;

[0026] Figure 2This is a partial structural side view of the battery module according to an embodiment of the present utility model;

[0027] Figure 3 for Figure 2 A magnified view of part A in the diagram;

[0028] Figure 4 This is a schematic diagram of the circuit board structure according to an embodiment of the present invention;

[0029] Figure 5 This is a schematic diagram of the structure of the box body according to an embodiment of the present utility model.

[0030] Explanation of reference numerals in the attached figures:

[0031] 10. Battery cell unit; 11. Main body; 12. Electrode; 121. Main body section; 13. Air bag section; 122. Bending section; 20. Circuit board; 21. Board body; 22. Busbar; 23. Notch; 30. First protective component; 31. First flame retardant component; 32. First fireproof component; 321. Abutment part; 322. Connecting part; 33. Second flame retardant component; 40. Second protective component; 41. Second fireproof component; 42. Heat insulation component; 43. First buffer component; 50. Third flame retardant component; 60. Third protective component; 61. Second buffer component; 62. Partition; 70. Box body; 71. Box body; 72. Box cover; 73. Breathable membrane; X, First direction; Y, Second direction; Z, Third direction. Detailed Implementation

[0032] 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.

[0033] The following is combined with Figures 1 to 5 The following describes embodiments of the present invention.

[0034] According to an embodiment of the present invention, in a first aspect, a battery module is provided, having intersecting first directions X, second directions Y, and third directions Z, comprising: a battery cell unit 10, a circuit board 20, and a first protective component 30. The battery cell unit 10 includes a tab 12, and a plurality of battery cell units 10 are provided. At least one battery cell unit 10 is arranged along the first direction X to form at least one battery cell row, and at least one battery cell row is arranged along the first direction X to form a battery cell group. The circuit board 20 is disposed at one end of the battery cell group along the third direction Z near the tab 12 and is electrically connected to the tab 12. The first protective component 30 includes a first flame retardant 31, which at least covers the connection between the tab 12 and the circuit board 20.

[0035] In the battery module of this embodiment, the high-temperature smoke generated when the cell unit 10 thermally runs away is discharged from the end where the tab 12 is located. By covering the connection between the tab 12 and the circuit board 20 with the first flame retardant 31, the high-temperature smoke emitted by the thermally runaway cell unit 10 is blocked, the heat insulation capacity at the tab 12 is improved, thermoelectric separation is achieved, and the phenomenon of heat propagation is prevented.

[0036] It should be noted that in related technologies, thermal management technology mainly improves the thermal stability and heat dissipation capacity of batteries by adding liquid cooling plates and optimizing electrode materials. However, the impact of high temperature on electrical performance stability is often overlooked. High-temperature gas can cause local overheating at the electrical connection, accelerate the thermal runaway of the cell unit 10, and cause thermal propagation. In addition, high-temperature gas can cause thermal expansion of metal conductors, resulting in reduced electrical connection efficiency and affecting battery performance.

[0037] Therefore, in this embodiment, a first flame-retardant component 31 is used to enclose the connection between the tab 12 and the circuit board 20 to block the high-temperature gas generated by the thermal runaway cell unit 10, thereby achieving thermoelectric separation, reducing the occurrence of heat propagation, and improving the overall safety performance of the battery module.

[0038] Specifically, such as Figure 3 As shown, the battery cell unit 10 also includes a main body 11 and an air bag 13. The air bag 13 is formed by extending the main body 11 from opposite ends along the third direction Z. The tab 12 extends from one end of the air bag 13.

[0039] Specifically, in this embodiment, the battery cell unit 10 is a soft-pack battery cell. Specifically, the battery cell unit 10 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 the opposite ends of the electrode group along the third direction Z. The aluminum-plastic film sealing edges serve as the air bag part 13 in this embodiment.

[0040] Specifically, the first flame-retardant component 31 is ceramic silicone foam. It is worth noting that while the ceramic silicone foam blocks the high-temperature smoke generated by the thermal runaway of the battery cell unit 10, it also uses its elasticity to protect the connection between the tab 12 and the circuit board 20, preventing the tab 12 from being disconnected from the circuit board 20 due to external forces.

[0041] Specifically, in this embodiment, the battery cell group is formed by thirteen battery cell units 10 arranged in a "3-3-1-3-3" manner. That is, the battery cell group is composed of five battery cell rows, of which the battery cell row in the middle position has only one battery cell unit 10, and the remaining battery cell rows are all formed by three battery cell units 10.

[0042] It should be noted that in other alternative implementations, the arrangement order of the cell arrays and the number of cell units 10 in each cell array can be adjusted according to different needs.

[0043] In one embodiment, such as Figure 1 and Figure 3 As shown, the first protective component 30 also includes a first fireproof element 32, which is disposed on opposite sides of the cell unit 10 and abuts against the cell unit 10. The tab 12 extends out between two adjacent first fireproof elements 32 along the third direction Z. The first fireproof element 32 provides heat insulation protection for the tab 12, further realizing the thermal-electric separation of the cell unit 10, preventing heat spread, and improving the safety performance of the battery module.

[0044] Specifically, the first fireproof component 32 is mica paper. It should be noted that two adjacent mica papers are bonded together. When the battery cell 10 experiences thermal runaway, the high-temperature gas emitted due to thermal runaway will break through the bonded mica paper and exhaust gas outward.

[0045] Furthermore, such as Figure 3 As shown, the first fireproof component 32 includes an abutment portion 321 and a connecting portion 322. Two abutment portions 321 are provided, each connecting to one end of the connecting portion 322. The two abutment portions 321 abut against two adjacent battery cell units 10. The first fireproof component 32 is formed by connecting the abutment portions 321 and the connecting portions 322, resulting in a simple structure that facilitates inspection and replacement.

[0046] Specifically, the two abutting parts 321 and the connecting part 322 are connected to form a "U"-shaped first fireproof component 32. The "U"-shaped structure has strong buffering capacity and is not easy to break or fail.

[0047] It should be noted that the two sides of the mica paper can also be folded to form the abutment part 321 and the connecting part 322.

[0048] In one embodiment, such as Figure 4As shown, a notch 23 is provided on the circuit board 20. The electrode tab 12 includes a main body section 121 and a bent section 122. The main body section 121 is connected to the bent section 122, and the main body section 121 passes through the notch 23. The bent section 122 is set at a predetermined angle to the main body section 121 and is located at the end of the circuit board 20 away from the battery cell array, and is electrically connected to the circuit board 20. A first flame-retardant component 31 covers the bent section 122. By providing a notch 23 on the circuit board 20, the exhaust area is increased, ensuring rapid exhaust in the event of thermal runaway; at the same time, the heat generated by the circuit board 20 is reduced, thus reducing the impact of heat on the electrical connection.

[0049] Specifically, one end of the main body segment 121 is connected to the main body 11, and the other end of the main body segment 121 passes through the notch 23 on the circuit board 20 and is bent to form a bent segment 122.

[0050] Furthermore, the first flame-retardant component 31 is bonded to the tab 12. One end of the first flame-retardant component 31 is connected to the bottom of the circuit board 20, and the other end is bent synchronously with the tab 12 and covers the connection between the bent section 122 and the circuit board 20, so as to achieve all-round heat insulation and flame-retardant protection for the tab 12.

[0051] It should be noted that the function of the circuit board 20 is to support the overlap and soldering of the tab 12. Therefore, only the substrate at the overlap between the tab 12 and the circuit board 20 needs to be retained, thereby maximizing the exhaust area. In addition, the circuit board 20 will generate heat during operation. Opening a notch 23 on the circuit board 20 can reduce heat generation and reduce the overall weight of the battery module.

[0052] It should be noted that, provided that the current requirements of tab 12 are met, the length of tab 12 can also be cut.

[0053] In one embodiment, the battery module further includes a potting structure, which is connected to the end of the cell assembly away from the tab 12 along the third direction Z. The potting structure is also disposed on both sides of the cell assembly along the first direction X and both sides along the second direction Y. The potting structure is disposed at the end of the cell assembly away from the tab 12 along the third direction Z to ensure that the high-temperature fumes generated when the cell unit 10 experiences thermal runaway are discharged from the end where the tab 12 is located. By providing the potting structure on the periphery of the cell assembly along the third direction Z and at the end away from the tab 12, the exhaust direction of the cell unit 10 is further defined, preventing the high-temperature gas from spreading from the periphery of the cell assembly along the third direction Z and preventing heat spread.

[0054] It should be noted that the above-mentioned potting structure is formed by potting adhesive between the cell assembly and the battery pack housing 70.

[0055] In one embodiment, such as Figure 1 and Figure 3As shown, the battery module also includes a second protective component 40, which is disposed between two adjacent cell rows. By placing the second protective component 40 between two adjacent cell rows, heat insulation is provided for the adjacent cell rows, preventing overheating and heat spread caused by high-temperature fumes emitted due to thermal runaway, thereby improving the safety performance of the battery module.

[0056] Furthermore, such as Figure 3 As shown, the second protective component 40 includes a second fireproof element 41 and a heat insulation element 42. Two second fireproof elements 41 are spaced apart along the first direction X, and the heat insulation element 42 is disposed between the two second fireproof elements 41. The heat insulation element 42 provides heat insulation for adjacent battery cells, and the second fireproof element 41 protects the heat insulation element 42 from flames generated in the event of thermal runaway.

[0057] Specifically, the second fireproof component 41 is mica paper, and the heat insulation component 42 is aerogel.

[0058] It should be noted that when the cell unit 10 experiences thermal runaway, flames may be generated inside the battery module. The flames may burn the aerogel, causing a decrease in the thermal insulation performance of the aerogel, or even causing the aerogel to melt. Therefore, a second fireproof component 41 is provided on both sides of the heat insulation component 42 to isolate the flames and ensure the thermal insulation performance of the heat insulation component 42.

[0059] Furthermore, such as Figure 3 As shown, the second protective component 40 also includes a first buffer 43, which is disposed on the side of the second fireproof component 41 away from the heat insulation component 42 along the first direction X. The first buffer 43 buffers the compressive force between adjacent battery cells, improving the safety of the battery cells.

[0060] Specifically, the first buffer element 43 is foam.

[0061] Furthermore, the first buffer 43 can also be disposed between two adjacent battery cell units 10 to further improve the safety performance of the battery cell array.

[0062] In one embodiment, such as Figure 4 As shown, the circuit board 20 includes a board body 21 and a busbar 22. The busbar 22 is connected to the board body 21, and the board body 21 is connected to the electrode tab 12. The first protective component 30 also includes a second flame-retardant component 33, which covers the connection between the busbar 22 and the board body 21. By covering the connection between the busbar 22 and the board body 21 with the second flame-retardant component 33, high-temperature fumes are isolated from the busbar 22, further achieving thermal-electric separation and ensuring the safety of the battery module.

[0063] Specifically, such as Figure 1 and Figure 4As shown, there are two busbars 22, which are respectively located at opposite corners of the board 21, forming the total positive busbar 22 and the total negative busbar 22 of the circuit board 20, so as to realize the electrical connection between the battery module and the external structure.

[0064] Specifically, the second flame-retardant component 33 is ceramic foam, which has heat insulation and cushioning properties.

[0065] In one embodiment, such as Figure 1 As shown, the battery module also includes a third flame-retardant component 50, and at least two third flame-retardant components 50 are provided, with at least one third flame-retardant component 50 provided on each side of the cell assembly along the second direction Y. The third flame-retardant components 50 provide heat insulation protection for the cell assembly in the second direction Y, further improving the safety performance of the battery module.

[0066] Specifically, such as Figure 1 As shown, in this embodiment, two third flame-retardant components 50 are provided, and are respectively provided on both sides of the battery cell assembly along the second direction Y.

[0067] Of course, in other alternative embodiments, the number of the third flame retardant 50 can be selected as other numbers according to actual needs, such as three, four, etc.

[0068] Specifically, the third flame-retardant component 50 is ceramic silicone foam. Ceramic silicone foam has heat insulation and flame-retardant effects, which can further improve the thermal insulation effect of the battery module. In addition, ceramic silicone foam is elastic and can absorb the force applied to the battery module by the second direction Y, thereby improving the safety performance of the battery module.

[0069] In one embodiment, such as Figure 1 and Figure 2 As shown, the battery module also includes a third protective component 60. There are two third protective components 60, which are respectively located on both sides of the cell assembly along the first direction X. When the battery module is placed into the battery pack housing 70, the third protective components 60 support the entire battery module, ensuring the stability and reliability of the battery module within the housing 70.

[0070] Specifically, such as Figure 2 As shown, the third protective component 60 includes a second buffer 61 and a partition 62. The second buffer 61 abuts against the side of the battery cell assembly along the first direction X, and the partition 62 is disposed on the side of the second buffer 61 away from the battery cell assembly along the first direction X.

[0071] Specifically, the second buffer 61 is foam.

[0072] Of course, in other alternative embodiments, the second buffer 61 can also be selected from other elastic and heat-resistant structures.

[0073] It should be noted that the mica paper in this embodiment can be replaced by other materials with fire-retardant properties, and the ceramic silicone foam can also be replaced by other materials with elasticity and heat insulation and flame retardant properties.

[0074] According to an embodiment of the present invention, in a second aspect, a battery pack is also provided, including the above-described battery module and a housing 70, wherein a receiving cavity is formed in the housing 70, and the battery module is disposed in the receiving cavity.

[0075] Specifically, such as Figure 5 As shown, the box 70 includes a box body 71 and a box cover 72. The box body 71 has an opening, and the box cover 72 is placed on the opening to enclose and form a receiving cavity.

[0076] Furthermore, the lid 72 is provided with ventilation holes, such as... Figure 5 As shown, the housing 70 also includes a breathable membrane 73, which is covered by the breathable membrane 74.

[0077] Preferably, the breathable membrane 73 is a waterproof breathable membrane 73.

[0078] It is worth noting that the breathable membrane 73 ensures air exchange between the housing 70 and the external environment while preventing external impurities and moisture from entering the housing 70, thereby improving the safety performance of the battery pack.

[0079] It should be noted that in other alternative embodiments, an explosion-proof valve can be used instead of the breathable membrane 73.

[0080] Furthermore, a fire-resistant structure is provided on the inner wall of the receiving cavity to improve the fire resistance of the battery pack.

[0081] 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 module having intersecting first direction (X), second direction (Y), and third direction (Z), characterized in that, include: A battery cell unit (10) includes a tab (12). A plurality of battery cell units (10) are provided. At least one battery cell unit (10) is arranged along the first direction (X) to form at least one battery cell row. At least one battery cell row is arranged along the first direction (X) to form a battery cell group. Circuit board (20), the circuit board (20) is disposed at one end of the battery cell assembly along the third direction (Z) near the tab (12), and is electrically connected to the tab (12); A first protective component (30) includes a first flame retardant (31) which at least covers the connection between the tab (12) and the circuit board (20).

2. The battery module according to claim 1, characterized in that, The first protective component (30) further includes a first fireproof element (32), which is disposed on opposite sides of the battery cell unit (10) and abuts against the battery cell unit (10). The tab (12) extends along the third direction (Z) between two adjacent first fireproof elements (32).

3. The battery module according to claim 2, characterized in that, The first fireproof component (32) includes an abutment portion (321) and a connecting portion (322). There are two abutment portions (321), which are respectively connected to both ends of the connecting portion (322) and respectively abut to two adjacent battery cells (10).

4. The battery module according to any one of claims 1-3, characterized in that, The circuit board (20) has a notch (23). The electrode (12) includes a main body section (121) and a bent section (122). The main body section (121) is connected to the bent section (122). The main body section (121) passes through the notch (23). The bent section (122) is set at a predetermined angle to the main body section (121) and is located at the end of the circuit board (20) away from the battery cell array, and is electrically connected to the circuit board (20). The first flame retardant (31) covers the bent section (122).

5. The battery module according to any one of claims 1-3, characterized in that, The battery module further includes a potting structure, which is connected to at least one end of the cell assembly away from the tab (12) along a third direction (Z); the potting structure is also disposed on both sides of the cell assembly along the first direction (X) and / or on both sides along the second direction (Y).

6. The battery module according to any one of claims 1-3, characterized in that, The battery module also includes a second protective component (40), which is disposed between two adjacent cell rows.

7. The battery module according to claim 6, characterized in that, The second protective component (40) includes a second fireproof component (41) and a heat insulation component (42). Two second fireproof components (41) are spaced apart along the first direction (X), and the heat insulation component (42) is disposed between the two second fireproof components (41).

8. The battery module according to claim 7, characterized in that, The second protective component (40) further includes a first buffer (43), which is disposed on the side of the second fireproof component (41) away from the heat insulation component (42) along the first direction (X).

9. The battery module according to any one of claims 1-3, characterized in that, The circuit board (20) includes a board body (21) and a busbar (22), the busbar (22) is connected to the board body (21), the board body (21) is connected to the tab (12), and the first protective component (30) further includes a second flame retardant (33), the second flame retardant (33) covering the connection between the busbar (22) and the board body (21); And / or, The battery module further includes a third flame-retardant component (50), of which at least two are provided, and at least one of the third flame-retardant components (50) is provided on each side of the cell assembly along the second direction (Y); and / or, The battery module also includes a third protective component (60), and there are two third protective components (60), which are respectively disposed on both sides of the battery cell assembly along the first direction (X).

10. A battery pack, characterized in that, include: The battery module according to any one of claims 1 to 9; The housing (70) has a receiving cavity, and the battery module is disposed in the receiving cavity.

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