Battery pack and electric device

Abstract

The utility model relates to the technical field of batteries, and discloses a battery pack and an electric device, the battery pack comprises a box body, a cover body, a slide rail, a fixing piece and a battery pack, the box body is provided with an accommodating cavity; the cover body is detachably connected to the box body; the slide rail is arranged in the accommodating cavity, and the slide rail is connected to the box body; the fixing piece comprises a fixing support, the fixing support comprises a sliding part and a connecting part, and the sliding part is connected to the sliding rail in a sliding mode; the battery pack comprises a single battery, the single battery is arranged in the accommodating cavity, the single battery comprises a shell and an anti-explosion valve, and the connecting part is provided with an air leakage hole corresponding to the anti-explosion valve; according to the battery pack provided by the utility model, the sliding rail is arranged in the box body, and the sliding part is arranged on the fixed bracket, so that when any single battery breaks down, the single battery can be quickly and conveniently taken out from the accommodating cavity and replaced, and the battery pack is convenient to maintain, disassemble and recycle.

Description

Technical Field

[0001] This utility model relates to the field of battery technology, and in particular to a battery pack and an electrical device. Background Technology

[0002] As the energy density of battery packs gradually increases, CTP (cell to pack) has emerged as a technology to improve the energy density of battery packs. CTP technology simplifies the manufacturing process from cell to module to complete pack to cell to complete pack, eliminating the intermediate process of module, which can significantly reduce the weight of the entire pack and thus improve energy density.

[0003] However, in the existing CTP battery pack, the individual cells are fixed in the battery pack by adhesive bonding. Due to the high bonding strength of the adhesive, it is difficult to repair when the individual cell is damaged, and the entire pack may need to be replaced. This brings great difficulties to the maintenance of the battery pack and the dismantling and recycling of the cells after the end of its life, which increases the cost of the battery pack to a certain extent. Utility Model Content

[0004] With the aim of at least solving one of the technical problems existing in the prior art, this utility model aims to provide a battery pack and an electrical device having the battery pack, wherein the battery pack is easy to maintain, disassemble and recycle, which helps to reduce resource waste and lower costs.

[0005] To achieve the above objectives, this utility model provides a battery pack, which has a first direction and includes a housing, a cover, a slide rail, a fixing member, and a battery pack. The housing has a receiving cavity, and one end of the housing in the first direction has an opening communicating with the receiving cavity. The cover is detachably connected to the housing and covers the opening. The slide rail is disposed in the receiving cavity and connected to the housing. The fixing member includes a fixing bracket, which includes a sliding part and a connecting part. The sliding part is slidably connected to the slide rail and can move along the first direction. The connecting part is connected to the end of the sliding part away from the slide rail. The battery pack includes individual batteries, which are disposed in the receiving cavity. Each individual battery includes a housing and an explosion-proof valve. The housing is connected to the side of the connecting part away from the slide rail, and the explosion-proof valve is disposed at the end of the housing near the slide rail. The connecting part has a vent hole corresponding to the explosion-proof valve.

[0006] In some embodiments, the battery pack also has a second direction perpendicular to the first direction; the end of the connecting portion facing the housing is recessed in a direction away from the housing and a mounting groove is provided, the housing portion is fitted into the mounting groove, and the vent hole is connected to the mounting groove.

[0007] In some embodiments, the connecting portion includes a first base plate, a first side plate, a second side plate, and a first end plate. The single battery cell is disposed on the side of the first base plate opposite to the slide rail. The first base plate has the vent hole. The first side plate is connected to one end of the first base plate in the second direction. The second side plate is connected to one end of the first base plate in the second direction away from the first side plate and is disposed opposite to the first side plate. The first end plate is connected to one end of the first base plate in the first direction. The first base plate, the first side plate, the second side plate, and the first end plate together form the mounting groove.

[0008] In some embodiments, the fastener includes a plurality of the fastening brackets arranged along the first direction, and the battery pack includes a plurality of individual cells arranged along the first direction, with one individual cell correspondingly connected to one of the fastening brackets.

[0009] In some embodiments, the battery pack further has a third direction, wherein the first direction, the second direction, and the third direction are mutually perpendicular; the fixing bracket further includes a baffle connected to the end of the connecting portion in the third direction away from the individual battery and located on the side of the vent in the first direction.

[0010] In some embodiments, the baffle has a through hole extending along the first direction; along the second direction, the through hole is located on one side of the vent hole.

[0011] In some embodiments, the baffle includes a bottom wall, a straight wall, and an inclined wall. The bottom wall is located on the side of the connecting portion away from the single battery cell. The straight wall is connected to the bottom wall and the connecting portion at both ends in the third direction. The inclined wall is connected to the bottom wall at one end in the third direction and extends away from the vent hole and is connected to the connecting portion at the other end.

[0012] In some embodiments, the slide rail includes a first slide plate and a second slide plate. The first slide plate is connected to the housing at one end in the third direction, and the second slide plate is connected to the end of the first slide plate away from the housing in the third direction. The housing, the first slide plate, and the second slide plate together form a first slide groove. The sliding part includes a third slide plate and a fourth slide plate. One end of the third slide plate is connected to the connecting part, and the fourth slide plate is connected to the end of the third slide plate away from the connecting part. The connecting part, the fourth slide plate, and the third slide plate together form a second slide groove. The fourth slide plate is embedded in the first slide groove, and the second slide plate is embedded in the second slide groove.

[0013] In some embodiments, the housing includes a second bottom plate, a third side plate, a fourth side plate, a second end plate, and a top cover. The slide rail is connected to the second bottom plate. The third side plate is connected to one end of the second bottom plate in the second direction. The fourth side plate is connected to one end of the second bottom plate in the second direction away from the third side plate and is disposed opposite to the third side plate. The second end plate is connected to one end of the second bottom plate in the first direction away from the cover and is disposed opposite to the cover. The third side plate, the fourth side plate, and the second end plate are all connected to the top cover. The top cover and the second bottom plate are disposed opposite to each other. The second bottom plate, the third side plate, the fourth side plate, the second end plate, and the top cover together form the receiving cavity.

[0014] This utility model also provides an electrical device, which includes the battery pack described in any of the above claims.

[0015] Compared with the prior art, the battery pack provided by this utility model has the following advantages: (1) By detachably connecting the cover to the box and sealing the opening, and sliding the individual battery to the slide rail via the fixed bracket, when it is necessary to repair or replace the faulty individual battery in the receiving cavity, the cover can be removed from the box and the opening can be opened. Then, the faulty individual battery can be quickly and conveniently slid to the opening via the fixed bracket along the slide rail, and then the faulty individual battery can be taken out from the receiving cavity through the opening. Therefore, when any individual battery in the battery pack provided by this utility model fails, the individual battery can be quickly and conveniently taken out from the receiving cavity and replaced, which facilitates the repair of the battery pack and the disassembly and recycling of the individual batteries after the end of their lifespan, reduces resource waste, and lowers costs.

[0016] (2) By opening a vent hole on the connection part, the explosion-proof valve of the single battery can be depressurized in a directional manner through the vent hole, which can ensure the normal operation of the explosion-proof valve and improve the safety of the battery pack. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of a battery pack provided in an embodiment of the present invention;

[0018] Figure 2 This is an exploded view of a battery pack provided in an embodiment of this utility model;

[0019] Figure 3 This is a structural schematic diagram of the box provided in an embodiment of the present utility model;

[0020] Figure 4 This is a side view of the box body provided in an embodiment of the present utility model;

[0021] Figure 5This is a schematic diagram of the assembly of the battery pack and the fixing component provided in an embodiment of the present utility model;

[0022] Figure 6 This is a schematic diagram of the structure of the fixed bracket provided in an embodiment of the present utility model;

[0023] Figure 7 This is a first cross-sectional view of the fixed bracket provided in this embodiment of the utility model;

[0024] Figure 8 This is a second cross-sectional view of the fixed bracket provided in this embodiment of the utility model;

[0025] Figure 9 This is a schematic diagram showing the combination of a single battery and a fixing bracket provided in an embodiment of this utility model.

[0026] In the diagram, 1. Box body; 11. Second bottom plate; 12. Third side plate; 13. Fourth side plate; 14. Second end plate; 15. Top cover; 16. Receiving cavity; 17. Opening;

[0027] 2. Cover;

[0028] 3. Slide rail; 31. First slide plate; 32. Second slide plate; 33. First slide groove;

[0029] 4. Fixing component; 41. Fixing bracket; 411. Sliding part; 412. Connecting part; 413. Baffle; 4111. Third sliding plate; 4112. Fourth sliding plate; 4113. Second sliding groove; 4121. First base plate; 4122. First side plate; 4123. Second side plate; 4124. First end plate; 4125. Mounting groove; 4131. Bottom wall; 4132. Straight wall; 4133. Sloping wall; 4134. Through hole; 41211. Vent hole;

[0030] 5. Battery pack; 51. Individual cell; 511. Housing; 512. Explosion-proof valve;

[0031] X, first direction; Y, second direction; Z, third direction. Detailed Implementation

[0032] The specific embodiments of this utility model will be described in further detail below with reference to the accompanying drawings and examples. The following examples are used to illustrate this utility model, but are not intended to limit its scope.

[0033] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0034] The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature.

[0035] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0036] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0037] Unless otherwise defined, all technical and scientific terms used in this application have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains; the terminology used in the description of this application is for the purpose of describing particular embodiments only and is not intended to limit the application; the terms "comprising" and "having" and any variations thereof in the description, claims and foregoing drawings of this application are intended to cover non-exclusive inclusion.

[0038] In this application, the reference to "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places in the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment that is mutually exclusive with other embodiments.

[0039] like Figures 1-9 As shown in the preferred embodiment of this utility model, the battery pack has a first direction X, a second direction Y, and a third direction Z that are perpendicular to each other. The battery pack includes a housing 1, a cover 2, a slide rail 3, a fixing member 4, and a battery pack 5. The housing 1 has a receiving cavity 16, and one end of the housing 1 in the first direction X has an opening 17 communicating with the receiving cavity 16. The cover 2 is detachably connected to the housing 1 and covers the opening 17. The slide rail 3 is disposed in the receiving cavity 16 and is connected to the housing 1. The fixing member 4 includes a fixing bracket 41, and the fixing bracket 41 includes a sliding part 4. 11 and connecting part 412, sliding part 411 is slidably connected to slide rail 3 and can move along the first direction X, connecting part 412 is connected to the end of sliding part 411 away from slide rail 3; battery pack 5 includes single cell battery 51, single cell battery 51 is disposed in receiving cavity 16, single cell battery 51 includes housing 511 and explosion-proof valve 512, housing 511 is connected to the side of connecting part 412 away from slide rail 3, explosion-proof valve 512 is disposed at the end of housing 511 close to slide rail 3, connecting part 412 is provided with a vent hole 41211 corresponding to explosion-proof valve 512.

[0040] Based on this technical solution, by detachably connecting the cover 2 to the housing 1 and sealing the opening 17, and slidably connecting the individual battery 51 to the slide rail 3 via the fixed bracket 41, when it is necessary to repair or replace the faulty individual battery 51 in the receiving cavity 16, the cover 2 can be removed from the housing 1 and the opening 17 opened. Then, the faulty individual battery 51 can be quickly and conveniently slid along the slide rail 3 via the fixed bracket 41 to the opening 17, and then the faulty individual battery 51 can be removed from the receiving cavity 16 through the opening 17. Therefore, when any individual battery 51 of the battery pack provided by this utility model fails, the individual battery 51 can be quickly and conveniently removed from the receiving cavity 16 for replacement, which facilitates the repair of the battery pack and the disassembly and recycling of the individual batteries 51 after the end of their lifespan, reduces resource waste, and lowers costs.

[0041] By opening a vent hole 41211 on the connection part 412 corresponding to the explosion-proof valve 512, the explosion-proof valve 512 of the single battery 51 can be depressurized in a directional manner through the vent hole 41211, which can ensure the normal operation of the explosion-proof valve 512 and improve the safety of the battery pack.

[0042] See Figures 1-4The housing 1 includes a second bottom plate 11, a third side plate 12, a fourth side plate 13, a second end plate 14, and a top cover 15. A slide rail 3 is connected to the second bottom plate 11. The third side plate 12 is connected to one end of the second bottom plate 11 in the second direction Y. The fourth side plate 13 is connected to the end of the second bottom plate 11 in the second direction Y away from the third side plate 12 and is opposite to the third side plate 12. The second end plate 14 is connected to the end of the second bottom plate 11 in the first direction X away from the cover 2 and is opposite to the cover 2. The third side plate 12, the fourth side plate 13, and the second end plate 14 are all connected to the top cover 15. The top cover 15 is opposite to the second bottom plate 11. The second bottom plate 11, the third side plate 12, the fourth side plate 13, the second end plate 14, and the top cover 15 together form a receiving cavity 16.

[0043] See Figures 2-7 The slide rail 3 includes a first slide plate 31 and a second slide plate 32. One end of the first slide plate 31 in the third direction Z is connected to the housing 1, and the second slide plate 32 is connected to the end of the first slide plate 31 in the third direction Z away from the housing 1. The housing 1, the first slide plate 31 and the second slide plate 32 together form a first slide groove 33. The sliding part 411 includes a third slide plate 4111 and a fourth slide plate 4112. One end of the third slide plate 4111 is connected to the connecting part 412, and the fourth slide plate 4112 is connected to the end of the third slide plate 4111 away from the connecting part 412. The connecting part 412, the fourth slide plate 4112 and the third slide plate 4111 together form a second slide groove 4113. The fourth slide plate 4112 is embedded in the first slide groove 33, and the second slide plate 32 is embedded in the second slide groove 4113. Thus, this nested fit, where the fourth sliding plate 4112 is precisely embedded in the first sliding groove 33 and the second sliding plate 32 is precisely embedded in the second sliding groove 4113, increases the contact area between the slide rail 3 and the sliding part 411, thereby improving the stability between them. Simultaneously, this nested fit also allows for precise control of the displacement of the sliding part 411 in various directions during the sliding process, enabling the slide rail 3 and the sliding part 411 to fit more tightly and improve sliding accuracy.

[0044] See Figures 5-9The fixing component 4 includes multiple fixing brackets 41 arranged along the first direction X, and the battery pack 5 includes multiple individual cells 51 arranged along the first direction X, with each individual cell 51 connected to one fixing bracket 41. Since each individual cell 51 is independently connected to its corresponding fixing bracket 41, when a fault is found in a particular individual cell 51, maintenance personnel can simply remove the faulty individual cell 51 from its corresponding fixing bracket 41 for individual replacement or repair. Meanwhile, the unfaulty individual cells 51 can remain on their original fixing brackets 41 without any additional operation. This design improves the maintainability of the battery pack 5, avoids the situation where the entire battery pack 5 is discarded due to localized problems, effectively reduces usage costs, and extends the service life of the entire battery pack 5. At the same time, this design also facilitates the maintenance of the battery pack 5, shortens maintenance time, improves work efficiency, and provides strong support for the continuous and stable operation of the battery pack in various application scenarios.

[0045] In this embodiment, there are multiple battery packs 5, which are arranged along the second direction Y. There are also multiple fasteners 4, which are arranged along the second direction Y.

[0046] The connecting part 412 has a recessed mounting groove 4125 at the end facing the housing 511, moving away from the housing 511. The housing 511 is partially embedded in the mounting groove 4125, and the vent hole 41211 is connected to the mounting groove 4125. Using this mounting groove 4125, when assembling the battery to the fixing bracket 41, simply inserting the housing 511 into the mounting groove 4125 accordingly quickly achieves relative fixation. The entire process is simple and straightforward, requiring no complex debugging or tedious alignment, greatly shortening the assembly time and improving assembly efficiency. Furthermore, since the vent hole 41211 is connected to the mounting groove 4125, while ensuring convenient assembly, it also accommodates the normal discharge of internal gas during the operation of the individual battery 51. This ensures that the overall structure meets the practical application requirements of efficient assembly without adversely affecting other battery performance due to the pursuit of convenient assembly.

[0047] The connecting part 412 includes a first base plate 4121, a first side plate 4122, a second side plate 4123, and a first end plate 4124. The single battery 51 is disposed on the side of the first base plate 4121 away from the slide rail 3. The first base plate 4121 has a vent hole 41211. The first side plate 4122 is connected to one end of the first base plate 4121 in the second direction Y. The second side plate 4123 is connected to the end of the first base plate 4121 in the second direction Y away from the first side plate 4122 and is disposed opposite to the first side plate 4122. The first end plate 4124 is connected to one end of the first base plate 4121 in the first direction X. The first base plate 4121, the first side plate 4122, the second side plate 4123, and the first end plate 4124 together form a mounting groove 4125. In this way, the first base plate 4121 provides a stable support foundation for the individual battery 51, ensuring the stability of the individual battery 51 within the battery pack. Furthermore, by opening a vent 41211 on the first base plate 4121, the gas emission requirements of the individual battery 51 during operation can be met, ensuring the safety performance of the individual battery 51. Since the multiple fixing brackets 41 are arranged along the first direction X, the first end plate 4124 of the preceding fixing bracket 41 can form a limiting relationship between the first end plate 4124 of the following fixing bracket 41 and the first end plate 4124 of the following fixing bracket, thus limiting the individual battery 51 in the first direction X, achieving both limiting and saving materials. Simultaneously, the first side plate 4122 and the second side plate 4123 can also limit the individual battery 51 in the second direction Y, further ensuring the stability of the individual battery 51 within the battery pack, preventing displacement in different directions, and improving the overall reliability and stability of the battery pack.

[0048] The area enclosed by the fourth slide plate 4112, the first base plate 4121 and the baffle 413 of any fixed bracket 41 serves as the pressure relief area of ​​the single battery 51 installed on the fixed bracket 41.

[0049] The fixing bracket 41 also includes a baffle 413, which is connected to the end of the connecting part 412 furthest from the individual cell 51 in the third direction Z and located on the side of the vent hole 41211 in the first direction X. Thus, when a single cell 51 experiences thermal runaway, the high-temperature gas released by the explosion-proof valve 512 of that single cell 51 reaches the pressure relief area through the vent hole 41211. The baffle 413 can block this high-temperature gas, preventing it from being transferred to the pressure relief areas of other individual cells 51 adjacent to the thermally runaway cell 51. This avoids a chain reaction of failures between multiple individual cells 51, helping to ensure the overall stability and safety of the battery pack 5. Simultaneously, the baffle 413 also provides some thermal radiation barrier capability, reducing heat transfer to the pressure relief areas of adjacent individual cells 51, making the heat distribution within the battery pack 5 more stable, further ensuring the overall stability and safety of the battery pack 5.

[0050] Optionally, the baffle 413 can be made of metal materials such as iron alloy and aluminum alloy, or it can be made of non-metallic materials such as composite materials and ceramic materials.

[0051] The baffle 413 has a through hole 4134 extending along the first direction X; along the second direction Y, the through hole 4134 is located on one side of the vent hole 41211. Thus, when the pressure in the pressure relief zone of the thermally runaway cell 51 reaching the pressure relief zone through the vent hole 41211 is too high, a portion of the internal pressure in the pressure relief zone can be released through the through hole 4134 to the pressure relief zones of adjacent cell 51s. This pressure relief zone of the thermally runaway cell 51 is then distributed among the adjacent cell 51s, reducing damage to the fixed support 41 structure caused by pressure issues. By placing the through hole 4134 on one side of the vent hole 41211 in the second direction Y, the gas flow in the pressure relief zone of the thermally runaway cell 51 can be guided, thereby balancing the pressure distribution in the pressure relief zone and preventing component damage due to excessive local pressure.

[0052] In this embodiment, there are multiple through holes 4134.

[0053] The baffle 413 includes a bottom wall 4131, a straight wall 4132, and an inclined wall 4133. The bottom wall 4131 is located on the side of the connecting portion 412 away from the single battery 51. The straight wall 4132 connects the bottom wall 4131 and the connecting portion 412 at its two ends in the third direction Z, respectively. The inclined wall 4133 connects to the bottom wall 4131 at one end in the third direction Z, and extends away from the vent 41211 at the other end and connects to the connecting portion 412. Thus, the baffle 413 has a gradually changing thickness structure, and the thickness of the trapezoidal baffle 413 gradually decreases in the direction away from the connecting portion 412. Due to the gradually decreasing thickness, airflow is smoother, and the anti-splashing effect is better. It saves materials, maintains compatible connection strength, and is energy-saving and environmentally friendly.

[0054] In this embodiment, the baffle 413 has a trapezoidal structure.

[0055] This utility model also provides an electrical device, which includes the battery pack of any of the above-mentioned items.

[0056] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and substitutions can be made without departing from the technical principles of the present utility model, and these improvements and substitutions should also be considered within the protection scope of the present utility model.

Claims

1. A battery pack having a first direction (X), characterized in that, include: Box (1), the box (1) having a receiving cavity (16), the box (1) having an opening (17) communicating with the receiving cavity (16) at one end in the first direction (X); A cover (2), which is detachably connected to the box (1) and seals the opening (17); The slide rail (3) is disposed in the receiving cavity (16) and is connected to the box body (1); The fixing member (4) includes a fixing bracket (41), the fixing bracket (41) includes a sliding part (411) and a connecting part (412), the sliding part (411) is slidably connected to the slide rail (3) and can move along the first direction (X), and the connecting part (412) is connected to the end of the sliding part (411) away from the slide rail (3); The battery pack (5) includes a single battery cell (51), which is disposed in the receiving cavity (16). The single battery cell (51) includes a housing (511) and an explosion-proof valve (512). The housing (511) is connected to the side of the connecting part (412) away from the slide rail (3). The explosion-proof valve (512) is disposed at the end of the housing (511) near the slide rail (3). The connecting part (412) is provided with a vent hole (41211) corresponding to the explosion-proof valve (512).

2. The battery pack according to claim 1, characterized in that, The connecting part (412) is recessed at one end facing the housing (511) and is provided with a mounting groove (4125) in a direction away from the housing (511). The housing (511) is partially fitted into the mounting groove (4125). The vent hole (41211) is connected to the mounting groove (4125).

3. The battery pack according to claim 2, characterized in that, It also has a second direction (Y) perpendicular to the first direction (X); the connecting part (412) includes a first base plate (4121), a first side plate (4122), a second side plate (4123), and a first end plate (4124). The single battery (51) is disposed on the side of the first base plate (4121) away from the slide rail (3). The first base plate (4121) has the vent hole (41211). The first side plate (4122) is connected to the first base plate (4121) in the second direction (Y). At one end, the second side plate (4123) is connected to the end of the first base plate (4121) in the second direction (Y) away from the first side plate (4122) and is disposed opposite to the first side plate (4122). The first end plate (4124) is connected to the end of the first base plate (4121) in the first direction (X). The first base plate (4121), the first side plate (4122), the second side plate (4123) and the first end plate (4124) together form the mounting groove (4125).

4. The battery pack according to claim 1, characterized in that, The fastener (4) includes a plurality of fastening brackets (41) arranged along the first direction (X), and the battery pack (5) includes a plurality of individual cells (51) arranged along the first direction (X), with one individual cell (51) correspondingly connected to one fastening bracket (41).

5. The battery pack according to claim 4, characterized in that, It also has a second direction (Y) and a third direction (Z), the first direction (X), the second direction (Y) and the third direction (Z) being perpendicular to each other; the fixed bracket (41) further includes a baffle (413), the baffle (413) being connected to the connecting part (412) at the end of the third direction (Z) away from the single cell (51) and located on the side of the vent (41211) in the first direction (X).

6. The battery pack according to claim 5, characterized in that, The baffle (413) has a through hole (4134) extending along the first direction (X); along the second direction (Y), the through hole (4134) is located on one side of the vent hole (41211).

7. The battery pack according to claim 5, characterized in that, The baffle (413) includes a bottom wall (4131), a straight wall (4132), and an inclined wall (4133). The bottom wall (4131) is located on the side of the connecting part (412) away from the single cell (51). The straight wall (4132) is connected to the bottom wall (4131) and the connecting part (412) at both ends in the third direction (Z). The inclined wall (4133) is connected to the bottom wall (4131) at one end in the third direction (Z), and extends away from the vent hole (41211) and is connected to the connecting part (412) at the other end.

8. The battery pack according to claim 1, characterized in that, It also has a second direction (Y) and a third direction (Z), and the first direction (X), the second direction (Y) and the third direction (Z) are perpendicular to each other; the slide rail (3) includes a first slide plate (31) and a second slide plate (32), one end of the first slide plate (31) in the third direction (Z) is connected to the housing (1), and the second slide plate (32) is connected to the end of the first slide plate (31) in the third direction (Z) away from the housing (1), and the housing (1), the first slide plate (31) and the second slide plate (32) together form a first slide groove (33); The sliding part (411) includes a third sliding plate (4111) and a fourth sliding plate (4112). One end of the third sliding plate (4111) is connected to the connecting part (412), and the fourth sliding plate (4112) is connected to the end of the third sliding plate (4111) away from the connecting part (412). The connecting part (412), the fourth sliding plate (4112), and the third sliding plate (4111) together form a second sliding groove (4113). The fourth sliding plate (4112) is embedded in the first sliding groove (33), and the second sliding plate (32) is embedded in the second sliding groove (4113).

9. The battery pack according to claim 1, characterized in that, It also has a second direction (Y) perpendicular to the first direction (X); the housing (1) includes a second bottom plate (11), a third side plate (12), a fourth side plate (13), a second end plate (14), and a top cover (15); the slide rail (3) is connected to the second bottom plate (11); the third side plate (12) is connected to one end of the second bottom plate (11) in the second direction (Y); and the fourth side plate (13) is connected to one end of the second bottom plate (11) in the second direction (Y) away from the third side plate (12) and opposite to the third side plate (12). The second end plate (14) is connected to the end of the second bottom plate (11) in the first direction (X) away from the cover (2) and is disposed opposite to the cover (2). The third side plate (12), the fourth side plate (13) and the second end plate (14) are all connected to the top cover (15). The top cover (15) and the second bottom plate (11) are disposed opposite to each other. The second bottom plate (11), the third side plate (12), the fourth side plate (13), the second end plate (14) and the top cover (15) together form the receiving cavity (16).

10. An electrical appliance, characterized in that, Includes the battery pack according to any one of claims 1-9.

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