Battery pack

Abstract

The utility model relates to the technical field of batteries, and discloses a battery pack which comprises a box body and a clamping mechanism arranged in the box body, the clamping mechanism comprises positioning shaft structures connected with the box body, the positioning shaft structures extend along the longitudinal direction of the box body, and the positioning shaft structures are oppositely arranged at intervals along the transverse direction of the box body; the clamping brackets are rotatably connected with the positioning shaft structure, and a battery cell mounting space is formed between the clamping brackets which are oppositely arranged on the positioning shaft structure; the battery cell is detachably arranged in the battery cell mounting space, the clamping bracket is provided with a clamping part, and the clamping part is provided with a clamping position close to the battery cell mounting space and an opening position far away from the battery cell mounting space; and the elastic structure enables the clamping part to be kept at the clamping position or the opening position. The battery pack disclosed by the utility model has the capability of independently replacing one or a plurality of battery cells, the maintenance cost of the whole pack is reduced, the maintainability of the whole pack is improved, and the safety and the stability of the whole battery pack are ensured.

Description

Technical Field

[0001] This utility model relates to the field of battery technology, specifically to battery packs. Background Technology

[0002] The power battery pack is a core component of electrical equipment such as new energy vehicles, serving as a power source. During use, accidents such as localized compression or collisions can damage individual or partial battery cells. If damaged cells are not replaced or repaired in a timely manner, the entire pack can pose a safety hazard. However, in current technologies, battery cells are typically fixed to the battery pack housing using bolts or potting compounds. Replacing individual cells is difficult and has low maintainability, leading to the need for complete pack replacement in the event of an accident, resulting in high costs. Utility Model Content

[0003] In view of this, the present invention provides a battery pack to solve the problems of high difficulty in replacing individual cells and low maintainability in existing battery packs.

[0004] This utility model provides a battery pack, including: a box body and a clamping mechanism disposed within the box body. The clamping mechanism includes: a positioning shaft structure connected to the box body, the positioning shaft structure extending longitudinally along the box body and being spaced apart laterally along the box body; a clamping bracket rotatably connected to the positioning shaft structure, the clamping brackets disposed opposite to each other on the positioning shaft structure forming a cell mounting space; a cell detachably disposed within the cell mounting space, the clamping bracket having a clamping portion having a clamping position close to the cell mounting space and an open position away from the cell mounting space; and an elastic structure for holding the clamping portion in the clamping position or the open position.

[0005] Beneficial effects: The clamping mechanism secures the battery cells within the battery pack body. When one or more cells need to be replaced or repaired, simply open the clamping bracket corresponding to the cell to release the clamp and remove the cell. When reinstalling the cell, place it in the corresponding cell mounting space, and the clamping bracket in that space will then re-clamp and secure it. Therefore, this battery pack allows for independent replacement of one or more cells, reducing overall pack maintenance costs, improving overall pack maintainability, and ensuring the overall safety and stability of the battery pack.

[0006] In one alternative embodiment, the clamping bracket further includes a support portion and a connecting portion, the support portion being connected to the end of the connecting portion, and the elastic structure pulling the clamping portion and the support portion together so that the clamping portion abuts against the battery cell at a predetermined angle.

[0007] Beneficial effects: The support part supports the battery cell. When the clamping bracket is opened, the support part can rotate upward to lift the battery cell, making it easy to remove the battery cell.

[0008] In one optional embodiment, the connecting portion includes a first connecting plate and a second connecting plate, wherein a first end of the first connecting plate and a second end of the second connecting plate are connected, and the first connecting plate and the second connecting plate are arranged at an angle to form a bending structure.

[0009] In one optional embodiment, the second end of the first connecting plate is connected to the supporting portion, and the first connecting plate and the supporting portion are arranged at an angle; the first end of the second connecting plate is connected to the clamping portion, and the second connecting plate and the clamping portion are arranged at an angle; the box body includes a box bottom plate, the lower end of the elastic structure is connected to the box bottom plate, and the upper end of the elastic structure is connected to the second connecting plate and is arranged close to the clamping portion.

[0010] In one alternative embodiment, the upper surfaces of the support portion and the first connecting plate are covered with an anti-slip and shock-absorbing layer.

[0011] Beneficial effects: By setting an anti-slip and shock-absorbing layer, the stability of the battery cell's position on the support is improved, and the support and the first connecting plate are prevented from causing scratches or bumps to the battery cell.

[0012] In one alternative embodiment, an electrical connector is provided on the side of the clamping portion facing the cell mounting space, the electrical connector being adapted to fit the terminal post of the cell.

[0013] Beneficial effects: By setting an electrical connector on the clamping part, after the battery cell is clamped and fixed, the electrical connector can be used to make an electrical connection with the battery cell's terminal. That is, by integrating the electrical connector with the clamping part, the electrical connection operation is facilitated while simplifying the overall structure.

[0014] In one alternative embodiment, the clamping portion has a recessed groove on the side facing the cell mounting space, so that the clamping portion surrounds the groove to form a covering structure, the electrical connector is disposed in the groove, and the covering structure is adapted to be disposed around the terminal post of the cell.

[0015] Beneficial effects: After the clamping bracket clamps and fixes the battery cell, the electrode post can be inserted into the groove and fit against the electrical connector. The covering structure cooperates with the outer periphery of the electrode post to limit the movement, further ensuring the stability and positional accuracy of the battery cell fixation.

[0016] In one optional embodiment, the electrical connector includes a bus unit and a data acquisition unit, the bus unit and the data acquisition unit being spaced apart, and an insulating element being provided between the bus unit and the data acquisition unit.

[0017] Beneficial effects: After the clamping bracket clamps and fixes the battery cell, the bus unit and the acquisition unit are both attached to the terminal post to achieve electrical connection, thereby enabling both high voltage and low voltage of the battery cell to be connected.

[0018] In one optional embodiment, a plurality of clamping brackets are arranged longitudinally at intervals on the positioning shaft structure, and the clamping brackets are slidably arranged longitudinally.

[0019] Beneficial effects: The position of the clamping bracket on the positioning shaft structure is adjustable, so that the clamping bracket can accurately match the corresponding battery cell, improving the adaptability of the clamping mechanism.

[0020] In one alternative embodiment, there is one clamping mechanism, or several clamping mechanisms are provided at lateral intervals.

[0021] Beneficial effects: The number of clamping mechanisms is matched with the number of rows of battery cells that need to be installed inside the battery pack, so that each row of battery cells can be clamped and fixed by the corresponding clamping mechanism.

[0022] In one alternative embodiment, the length direction of the battery cell is arranged laterally along the body of the casing, and the clamping mechanism is arranged laterally at opposite ends of the length direction of the battery cell. 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 partial structural schematic diagram of the battery pack according to an embodiment of the present utility model;

[0025] Figure 2 for Figure 1 A top view of the battery pack shown;

[0026] Figure 3 This is a schematic diagram of the bottom plate, clamping mechanism, and battery cell of this utility model embodiment;

[0027] Figure 4 for Figure 3 The diagram shows the front view of the bottom plate, clamping mechanism, and battery cell.

[0028] Figure 5 for Figure 3 A magnified view of a portion of point A in the middle;

[0029] Figure 6 This is a schematic diagram of the clamping mechanism according to an embodiment of the present utility model;

[0030] Figure 7 for Figure 6 The front view of the clamping mechanism shown;

[0031] Figure 8 for Figure 6 A partially enlarged schematic diagram of the clamping bracket;

[0032] Figure 9 This is a schematic diagram of the clamping bracket and elastic structure when the clamping part of this utility model is in the clamping position;

[0033] Figure 10 This is a schematic diagram of the clamping bracket and elastic structure when the spring is in a vertical state, according to an embodiment of the present invention.

[0034] Figure 11 This is a schematic diagram of the clamping bracket and elastic structure when the clamping part of this utility model is in the open position.

[0035] Explanation of reference numerals in the attached figures:

[0036] 1. Box body; 11. Box bottom plate; 2. Clamping mechanism; 21. Positioning shaft structure; 211. Shaft body; 212. Fixing seat; 22. Clamping bracket; 221. Clamping part; 2211. Covering structure; 222. Supporting part; 223. Connecting part; 2231. First connecting plate; 22311. Clearance groove; 2232. Second connecting plate; 23. Battery cell installation space; 24. Elastic structure; 241. Spring; 242. Base; 25. Electrical connector; 251. Busbar unit; 252. Acquisition unit; 26. Insulating component; 100. Battery cell. Detailed Implementation

[0037] 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.

[0038] The following is combined with Figures 1 to 11 The following describes embodiments of the present invention.

[0039] According to an embodiment of the present invention, a battery pack is provided, such as... Figure 1 and Figure 2 As shown, it includes: a housing body 1, a clamping mechanism 2 disposed within the housing body 1, and a battery cell 100. The clamping mechanism 2 includes a positioning shaft structure 21, a clamping bracket 22, and an elastic structure 24. Figure 1 and Figure 2 As shown, the positioning shaft structure 21 is connected to the box body 1. The positioning shaft structure 21 extends longitudinally along the box body 1 and is spaced apart laterally along the box body 1. Figure 6 As shown, the clamping bracket 22 is rotatably connected to the positioning shaft structure 21, and a cell mounting space 23 is formed between the clamping brackets 22 disposed opposite to each other on the positioning shaft structure 21. The cell 100 is detachably mounted in the cell mounting space 23. Figure 9 and Figure 11 As shown, the clamping bracket 22 has a clamping portion 221, which has a clamping position close to the cell mounting space 23 and an open position away from the cell mounting space 23. Figure 4 As shown, the elastic structure 24 keeps the clamping part 221 in the clamped position or the open position.

[0040] The battery cell 100 is clamped and fixed inside the battery pack body 1 using the clamping mechanism 2. When it is necessary to replace or repair one or more battery cells 100 in the battery pack body, simply open the clamping bracket 22 corresponding to the battery cell 100 to release the clamping of the battery cell 100 and remove it. When it is necessary to reinstall the battery cell 100, install the battery cell 100 in the corresponding battery cell installation space 23, so that the clamping bracket 22 corresponding to the battery cell installation space 23 can clamp and fix the battery cell 100 again. Therefore, the battery pack of this embodiment has the ability to independently replace one or more battery cells 100, reducing the overall repair and maintenance costs of the pack, improving the overall maintainability of the pack, and ensuring the overall safety and stability of the battery pack.

[0041] It should be noted that you should refer to [link / reference]. Figure 6For a clamping mechanism 2, two positioning shaft structures 21 are provided, which are arranged laterally at intervals. Each positioning shaft structure 21 is provided with a clamping bracket 22, such as... Figure 4 As shown, a battery cell 100 is clamped and fixed at its two opposite ends along the lateral direction by two clamping brackets 22 on two positioning shaft structures 21.

[0042] It is worth noting that the clamping bracket 22 is an insulating component 26, which can be made of PE material, polyethylene material, etc.

[0043] It should be noted that you should refer to [link / reference]. Figure 4 The elastic structure 24 is connected between the box body 1 and the clamping bracket 22.

[0044] In one embodiment, such as Figure 8 As shown, the clamping bracket 22 also includes a support portion 222 and a connecting portion 223. The ends of the support portion 222 and the connecting portion 223 are connected. The elastic structure 24 pulls the clamping portion 221 and the support portion 222 together, so that the clamping portion 221 abuts against the battery cell 100 at a predetermined angle. With this configuration, the support portion 222 supports the battery cell 100. When the clamping bracket 22 is opened, the support portion 222 can rotate upward to lift the battery cell 100, making it easy to remove the battery cell 100.

[0045] Furthermore, such as Figure 8 As shown, the connecting part 223 has a bent structure. The connecting part 223 is rotatably connected to the positioning shaft structure 21 at the bend of the bent structure. The clamping part 221 is connected to the first end of the connecting part 223, and the supporting part 222 is connected to the second end of the connecting part 223. The clamping part 221 and the supporting part 222 are set at a predetermined angle.

[0046] It is worth noting that, such as Figure 4 and Figure 5 As shown, the support portion 222 mates with the bottom surface of the battery cell 100, and the clamping portion 221 mates with the side surface of the battery cell 100. Since the bottom surface and the side surface of the battery cell 100 are vertically arranged, the clamping portion 221 and the support portion 222 are arranged vertically.

[0047] Specifically, in one embodiment, such as Figure 8As shown, the connecting portion 223 includes a first connecting plate 2231 and a second connecting plate 2232. The first end of the first connecting plate 2231 and the second end of the second connecting plate 2232 are connected, and the first connecting plate 2231 and the second connecting plate 2232 are arranged at an angle to form a bending structure. Further, the second end of the first connecting plate 2231 is connected to the supporting portion 222, and the first connecting plate 2231 and the supporting portion 222 are arranged at an angle. The first end of the second connecting plate 2232 is connected to the clamping portion 221, and the second connecting plate 2232 and the clamping portion 221 are arranged at an angle.

[0048] In one embodiment, such as Figure 4 As shown, the box body 1 includes a box bottom plate 11, the lower end of the elastic structure 24 is connected to the box bottom plate 11, and the upper end of the elastic structure 24 is connected to the second connecting plate 2232 and disposed near the clamping part 221. Further, as... Figure 4 As shown, the elastic structure 24 includes a spring 241 and a base 242. The base 242 is connected to the bottom plate 11 of the box, the lower end of the spring 241 is connected to the base 242, and the upper end of the spring 241 is connected to the second connecting plate 2232.

[0049] like Figure 9 As shown, when the clamping part 221 is in the clamped position, the spring 241 is inclined relative to the vertical direction, and the upper end of the spring 241 is closer to the cell mounting space 23 than the lower end of the spring 241. When the clamping part 221 rotates from the clamped position to the open position (that is, ...), Figure 9 The clamping bracket 22 shown rotates counterclockwise, and the spring 241 rotates synchronously around its connection point with the base 242. The distance between the connection point of the spring 241 and the second connecting plate 2232 and the connection point of the spring 241 and the base 242 gradually increases, causing the spring 241 to be stretched. Figure 10 As shown, when spring 241 rotates to the vertical position, that is, when the connection point between spring 241 and the second connecting plate 2232 is directly above the connection point between spring 241 and the base 242, spring 241 is stretched to its maximum. As spring 241 continues to rotate with clamping part 221 past the vertical position, spring 241 contracts, and the distance between the connection point between spring 241 and the second connecting plate 2232 and the connection point between spring 241 and the base 242 gradually decreases. Under the elastic force of spring 241, clamping part 221 is pulled to continue rotating until clamping part 221 is in the open position. At this time, as... Figure 11 As shown, the spring 241 is also inclined relative to the vertical direction, and the upper end of the spring 241 is further away from the cell mounting space 23 than the lower end of the spring 241.

[0050] Conversely, when the clamping part 221 rotates from the open position to the clamping position (that is, ...), Figure 11The clamping bracket 22 shown rotates clockwise, and the spring 241 rotates synchronously around its connection point with the base 242. The distance between the connection point of the spring 241 and the second connecting plate 2232 and the connection point of the spring 241 and the base 242 gradually increases, causing the spring 241 to be stretched. Figure 10 As shown, when spring 241 rotates to the vertical position, that is, when the connection point between spring 241 and the second connecting plate 2232 is directly above the connection point between spring 241 and the base 242, spring 241 is stretched to its maximum. As spring 241 continues to rotate with clamping part 221 past the vertical position, spring 241 contracts, and the distance between the connection point between spring 241 and the second connecting plate 2232 and the connection point between spring 241 and the base 242 gradually decreases. Under the elastic force of spring 241, clamping part 221 is pulled to continue rotating until clamping part 221 is in the clamping position (e.g., ...). Figure 9 (As shown).

[0051] Furthermore, under the connecting action of the connecting part 223, the base part rotates synchronously with the clamping part 221. For example... Figure 4 and Figure 9 As shown, when the clamping part 221 is in the clamped position, the bottom support part is fitted against the bottom plate 11 of the box; when the clamping part 221 rotates from the clamped position to the open position, the bottom support part gradually rotates upward, thereby gradually lifting the battery cell 100; as Figure 11 As shown, when the clamping part 221 is in the open position, the bottom support part rotates to the maximum angle position away from the bottom plate 11. Conversely, when the clamping part 221 rotates from the open position to the clamping position, the bottom support part gradually rotates downward, and the bottom surface of the battery cell 100 gradually approaches the bottom plate 11 until the bottom support part is in contact with the bottom plate 11, and the battery cell 100 is installed in place.

[0052] In one embodiment, such as Figure 8 As shown, a clearance groove 22311 is provided on the first connecting plate 2231, and the spring 241 is disposed through the clearance groove 22311. By providing the clearance groove 22311, interference between the spring 241 and the first connecting plate 2231 is avoided, ensuring that the spring 241 can rotate smoothly.

[0053] It is worth noting that, please refer to Figure 5 The clamping bracket 22 has elastic structures 24 on both opposite sides along its longitudinal direction. This balances the forces on the clamping bracket 22 and improves its stability during rotation.

[0054] In one embodiment, the upper surfaces of the support portion 222 and the first connecting plate 2231 are covered with an anti-slip and shock-absorbing layer (not shown). By providing the anti-slip and shock-absorbing layer, the stability of the battery cell 100's position on the support portion 222 is improved, and scratches or dents caused to the battery cell 100 by the support portion 222 and the first connecting plate 2231 are avoided. Specifically, the anti-slip and shock-absorbing layer can be made of materials such as rubber.

[0055] In one embodiment, such as Figure 8 As shown, an electrical connector 25 is provided on the side of the clamping part 221 facing the cell mounting space 23. The electrical connector 25 is adapted to fit against the terminal of the cell 100. By providing the electrical connector 25 on the clamping part 221, after the cell 100 is clamped and fixed, the electrical connector 25 can be electrically connected to the terminal of the cell 100. That is, by integrating the electrical connector 25 with the clamping part 221, the electrical connection operation is facilitated while simplifying the overall structure.

[0056] Furthermore, in one embodiment, such as Figure 8 As shown, the clamping part 221 has a recessed groove on the side facing the cell mounting space 23, so that the clamping part 221 surrounds the groove to form a covering structure 2211. The electrical connector 25 is disposed in the groove, and the covering structure 2211 is adapted to surround the terminal post of the cell 100. After the clamping bracket 22 clamps and fixes the cell 100, the terminal post can be inserted into the groove and fit against the electrical connector 25. The covering structure 2211 cooperates with the outer periphery of the terminal post to limit its movement, further ensuring the stability and positional accuracy of the cell 100.

[0057] It is worth noting that when the clamping part 221 is in the clamping position, the inner wall surface of the covering structure 2211 (that is, the side of the covering structure 2211 facing the groove) is abutted against the outer periphery of the pole post.

[0058] In one embodiment, such as Figure 8 As shown, the electrical connector 25 includes a busbar unit 251 and a data acquisition unit 252, which are spaced apart and are separated by an insulating component 26. After the clamping bracket 22 clamps and fixes the battery cell 100, both the busbar unit 251 and the data acquisition unit 252 are in contact with the terminal post to achieve electrical connection, thereby enabling both high voltage and low voltage of the battery cell 100 to be connected.

[0059] In one embodiment, such as Figure 6 As shown, a plurality of clamping brackets 22 are arranged longitudinally at intervals on the positioning shaft structure 21, and the clamping brackets 22 are slidably arranged longitudinally. The position of the clamping brackets 22 on the positioning shaft structure 21 is adjustable so that the clamping brackets 22 can accurately match the corresponding battery cells 100, thereby improving the adaptability of the clamping mechanism 2.

[0060] In one embodiment, the clamping mechanism 2 is provided with one; or, as... Figures 1 to 3 As shown, several clamping mechanisms 2 are arranged at horizontal intervals. The number of clamping mechanisms 2 is adapted to the number of rows of battery cells 100 that need to be installed in the battery pack body, so that each row of battery cells 100 can be clamped and fixed by the corresponding clamping mechanism 2.

[0061] It is worth noting that, please refer to Figures 1 to 3 The battery pack body contains two rows of cells 100 arranged at horizontal intervals, and each row includes multiple cells 100 arranged sequentially along the longitudinal direction. For example... Figure 5 and Figure 8 As shown, a bus unit 251 on a clamping part 221 is simultaneously attached to the terminals of two adjacent cells 100 to connect the two adjacent cells 100 in series. Therefore, please refer to Figure 2 On the two positioning shaft structures 21 of a clamping mechanism 2, the two clamping brackets 22 used to clamp the same battery cell 100 are offset longitudinally by the thickness of one battery cell 100. Therefore, the two clamping parts 221 are partially spaced apart in the lateral direction, rather than being completely opposite in the lateral direction. This allows the busbar units 251 provided on all the clamping brackets 22 of a clamping mechanism 2 to connect a row of battery cells 100 in series.

[0062] It should be noted that in this embodiment, the battery cell 100 is a short-blade battery cell 100, with the positive and negative electrodes respectively located at opposite ends along the length of the short-blade battery cell 100, such as... Figures 1 to 4 As shown, the length of the battery cell 100 is arranged laterally along the body 1. Therefore, the clamping mechanism 2 is arranged at both ends of the length of the battery cell 100 at a lateral interval. That is, the two clamping brackets 22 arranged at a lateral interval are respectively arranged at the opposite ends of the battery cell 100 along the length.

[0063] In one embodiment, such as Figure 3 and Figure 6 As shown, the positioning shaft structure 21 includes a shaft body 211 and a fixing seat 212. Two fixing seats 212 are provided and connected to both ends of the shaft body 211. The fixing seats 212 are connected to the housing body 1, and the shaft body 211 extends longitudinally. Specifically, the shaft body 211 is a stainless steel cylindrical guide rod, and the fixing seat 212 is made of cast aluminum alloy. During the welding process of the housing body 1, the fixing seat 212 is welded to the rear beam or module limiting beam of the housing body 1 using CMT (Cold Metal Transfer) welding technology.

[0064] When assembling the battery pack housing of this embodiment, firstly, during the welding and fabrication of the housing body 1, the fixing base 212 and the base 242 are pre-installed. According to the cell 100 arrangement design, a corresponding number of clamping brackets 22 are installed on the shaft body 211, and the shaft body 211 is connected to the fixing base 212. Then, the position of the clamping brackets 22 on the shaft body 211 is adjusted, and the distance between two adjacent clamping brackets 22 is adjusted so that the distance between two adjacent clamping brackets 22 on the same shaft body 211 is equal to the distance between the terminals of two adjacent cells 100. This ensures that each clamping bracket 22 is in the open position (e.g., ...). Figure 11 As shown), at this time, the distance between the two clamping parts 221 arranged laterally opposite each other is slightly greater than the length of the battery cell 100; finally, the two ends of the spring 241 are respectively connected to the mounting holes of the base 242 and the clamping bracket 22.

[0065] When the battery cell 100 is installed in the battery pack housing of this embodiment, when the battery cell 100 is vertically inserted downwards from directly above the battery cell installation space 23 between the horizontally opposite clamping brackets 22, the bottom of the battery cell 100 will first contact the anti-slip and shock-absorbing layer provided on the clamping bracket 22. As the battery cell 100 continues to descend, the battery cell 100 applies downward pressure to the supporting part 222 of the clamping bracket 22, causing the clamping bracket 22 to rotate as a whole, causing the clamping part 221 to rotate from the open position to the clamping position. During the rotation, the spring 241 is first stretched until it reaches its maximum stretch when it rotates to the vertical position (e.g., Figure 10 As shown, when the spring 241 continues to rotate with the clamping part 221 past the vertical state, the spring 241 contracts. Under the elastic force of the spring 241, the clamping part 221 is pulled to rotate rapidly at a certain angle until the covering structure 2211 abuts against the outer peripheral edge of the pole post and the electrical connector 25 is in close contact with the pole post.

[0066] When it is necessary to replace the battery cell 100, firstly, after ensuring proper insulation, mark the problematic battery cell 100. For the marked battery cell 100, confirm the positions of the clamping brackets 22 at both ends. Rotate the clamping part 221 away from the battery cell 100 to move it from a clamped position to an open position. During this rotation, the spring 241 is first stretched until it reaches its maximum stretch when rotated to a vertical position (e.g., ...). Figure 10 As shown, when the spring 241 continues to rotate with the clamping part 221 past the vertical position, the spring 241 contracts. Under the elastic force of the spring 241, the clamping part 221 is pulled to continue rotating until it is fully open. At the same time, the supporting part 222 rotates upward to lift the battery cell 100, so that the battery cell 100 can be removed. Afterwards, a new battery cell 100 can be reinstalled in this position.

[0067] The battery cell in the embodiment can be a square hard-shell battery cell, such as the current blade-type or half-blade-type battery cell.

[0068] 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 appended claims.

Claims

1. A battery pack, characterized in that, include: The box body (1) and the clamping mechanism (2) disposed within the box body (1), the clamping mechanism (2) comprising: A positioning shaft structure (21) is connected to the box body (1). The positioning shaft structure (21) extends longitudinally along the box body (1) and is arranged at relative intervals laterally along the box body (1). The clamping bracket (22) is rotatably connected to the positioning shaft structure (21), and a cell mounting space (23) is formed between the clamping brackets (22) arranged opposite to each other on the positioning shaft structure (21); The battery cell (100) is detachably disposed in the battery cell mounting space (23). The clamping bracket (22) has a clamping part (221), which has a clamping position close to the battery cell mounting space (23) and an open position away from the battery cell mounting space (23). The elastic structure (24) keeps the clamping part (221) in the clamping position or the open position.

2. The battery pack according to claim 1, characterized in that, The clamping bracket (22) further includes a support portion (222) and a connecting portion (223). The support portion (222) is connected to the end of the connecting portion (223). The elastic structure (24) pulls the clamping portion (221) and the support portion (222) together, so that the clamping portion (221) abuts against the battery cell (100) at a predetermined angle.

3. The battery pack according to claim 2, characterized in that, The connecting part (223) includes a first connecting plate (2231) and a second connecting plate (2232). The first end of the first connecting plate (2231) and the second end of the second connecting plate (2232) are connected. The first connecting plate (2231) and the second connecting plate (2232) are arranged at an angle to form a bending structure.

4. The battery pack according to claim 3, characterized in that, The second end of the first connecting plate (2231) is connected to the support part (222), and the first connecting plate (2231) and the support part (222) are arranged at an angle. The first end of the second connecting plate (2232) is connected to the clamping part (221), and the second connecting plate (2232) and the clamping part (221) are arranged at an angle. The box body (1) includes a box bottom plate (11). The lower end of the elastic structure (24) is connected to the box bottom plate (11), and the upper end of the elastic structure (24) is connected to the second connecting plate (2232) and is arranged close to the clamping part (221).

5. The battery pack according to claim 4, characterized in that, The upper surfaces of the support portion (222) and the first connecting plate (2231) are covered with an anti-slip and shock-absorbing layer.

6. The battery pack according to any one of claims 1 to 5, characterized in that, The clamping part (221) is provided with an electrical connector (25) on the side facing the cell mounting space (23), and the electrical connector (25) is adapted to fit the terminal post of the cell (100).

7. The battery pack according to claim 6, characterized in that, The clamping part (221) has a recessed groove on the side facing the cell mounting space (23) so that the clamping part (221) surrounds the groove to form a covering structure (2211). The electrical connector (25) is disposed in the groove. The covering structure (2211) is adapted to be disposed around the pole of the cell (100).

8. The battery pack according to claim 6, characterized in that, The electrical connector (25) includes a bus unit (251) and a data acquisition unit (252), the bus unit (251) and the data acquisition unit (252) are spaced apart, and an insulating element (26) is provided between the bus unit (251) and the data acquisition unit (252).

9. The battery pack according to any one of claims 1 to 5, characterized in that, The positioning shaft structure (21) is provided with a plurality of clamping brackets (22) spaced apart along the longitudinal direction, and the clamping brackets (22) are slidably arranged along the longitudinal direction.

10. The battery pack according to any one of claims 1 to 5, characterized in that, The length direction of the battery cell (100) is arranged laterally along the body of the casing (1), and the clamping mechanism (2) is arranged at opposite ends of the length direction of the battery cell (100) at a lateral interval.

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