Battery pack and electric equipment

Abstract

The utility model relates to the field of batteries, and discloses a battery pack and electric equipment. The battery pack comprises a box body, a battery pack and a bundling assembly, and the battery pack and the bundling assembly are arranged in the box body. The binding assembly comprises an end plate, a binding belt and a locking piece, the end plate is arranged at the end, located in the first direction, of the battery pack, the binding belt surrounds the end plate and the peripheral side of the battery pack, and part of the binding belt is located on the side, away from the battery pack, of the end plate; wherein the binding belt is provided with at least two free ends, a plurality of lock holes are formed in the binding belt from the free ends in the length direction of the binding belt, a locking block is arranged on the side, away from the battery pack, of the end plate, and the two free ends are fixedly connected to the locking block through locking pieces. According to the scheme, the tightening force on the battery pack can be adjusted according to specific conditions, so that more flexible and reliable binding tightening force is provided, and the consistency of the battery pack and the binding adaptability are improved.

Description

Technical Field

[0001] The present application relates to the field of batteries, and in particular to a battery pack and an electrical device. Background Art

[0002] The battery pack is a core component in the new energy field. It generally includes a box and a battery pack arranged inside the box. In some cases, the battery pack is suitable for simple assembly, that is, the battery pack is fixed with a cable tie.

[0003] The cable tie structure used in existing related technologies is typically a single, integral structure that is applied to the outside of the battery pack using specialized tools. The tightening force provided by the cable tie after application is constant and cannot be adjusted. This results in uncontrollable preload force within the battery pack, making it difficult to adapt to different battery pack types or sizes. The tightening force of the battery pack after application is inconsistent, affecting battery pack performance.

[0004] Application Contents

[0005] The present application provides a battery pack and an electrical device so that the tightening force on the battery pack can be adjusted according to specific circumstances, so as to provide a more flexible and reliable bundling tightening force, improve the consistency of the battery pack and the adaptability of the bundling.

[0006] A battery pack has a first direction, and the battery pack includes: a box body with a accommodating cavity therein; a battery pack, arranged in the accommodating cavity, the battery pack including a plurality of battery cells stacked and arranged along the first direction; a bundling assembly, arranged in the accommodating cavity, including an end plate, a cable tie and a locking piece, the end plate being arranged at the end of the battery pack in the first direction, the cable tie being arranged around the outer peripheral side of the end plate and the battery pack, and a portion of the cable tie being located on the side of the end plate facing away from the battery pack; wherein the cable tie has at least two free ends, and a plurality of locking holes are opened on the free end of the cable tie along the length direction of the cable tie, a locking block is provided on the side of the end plate facing away from the battery pack, and the free end is fixedly connected to the locking block by the locking piece.

[0007] In the embodiment of the present application, the bundling process is as follows: first, the end plate is attached to the end of the battery pack, the cable tie is wrapped around the end plate and the outside of the battery pack, and the free end is located at the end plate position, and then the free end is fixed to the locking block through the locking member and the locking hole. In the embodiment of the present application, since multiple locking holes are provided at the end of the cable tie, different locking forces can be generated by using the locking member in conjunction with different locking holes, which can be flexibly applied when facing different battery packs. Even in the same battery pack, the position of the matching locking hole can be adjusted as needed, thereby adjusting the locking force to better meet the needs of use.

[0008] As one of the optional embodiments of the present application, the battery pack also has a second direction intersecting with the first direction. The cable tie has two free ends, which are respectively arranged on both sides of the locking block in the second direction. The locking member includes a locking bolt and a locking nut. The locking bolt penetrates the locking block along the second direction, and the tail end of the locking bolt passes through two adjacent locking holes arranged along the second direction and is threadedly connected to the locking nut.

[0009] In the embodiments of this application, a specific structure of a locking member is proposed. During operation, the tail end of the locking bolt first passes through the locking hole on one free end, then through the locking block. After the tail end of the locking bolt extends from the locking block, it passes through the locking hole on the other free end. The locking nut is then threaded onto the tail end of the locking bolt. The operation is simple and convenient, and no special tools are required for installation. This simplifies the installation process of the strapping assembly and reduces the workload.

[0010] As one of the optional embodiments of the present application, the locking member also includes a locking pressure plate arranged outside the locking bolt. Along the second direction, the locking pressure plate is arranged on the side of the cable tie away from the locking block. The locking pressure plate has a crimping surface facing the locking block, and the locking pressure plate presses the cable tie against the locking block through the crimping surface.

[0011] As one of the optional embodiments of the present application, the locking pressing piece has a limiting surface facing the end plate, and the locking pressing piece abuts the cable tie against the end plate through the limiting surface.

[0012] In the embodiment of the present application, the locking pressure plate presses the cable tie onto the end plate and the locking block through the pressing surface and the limiting surface, ensuring the fitting contact between the cable tie and the end plate, providing a more comprehensive pressing force, preventing the cable tie from tilting relative to the end plate, and ensuring the stable bundling effect of the cable tie.

[0013] As one of the optional embodiments of the present application, a plurality of battery packs are provided, and the plurality of battery packs are arranged along the second direction, with gaps left between adjacent battery packs; the bundling assembly also includes an intermediate belt, which extends along the first direction and is arranged in the gap, with one end of the intermediate belt fixedly connected to the end plate, and the other end of the intermediate belt fixed to the cable tie.

[0014] In the embodiment of the present application, when multiple battery packs are provided, the cooperation of the middle belt, the cable tie and the end plate can improve the overall stability of the strapping assembly, thereby ensuring the stability and reliability of the strapping assembly for strapping the battery packs.

[0015] As one of the optional embodiments of the present application, the bundling assembly also includes a pre-tightening member, which includes: a support frame, which is arranged on a side of the end plate away from the battery pack, with a through opening left between the support frame and the end plate, and the through opening passes through the support frame along the second direction; a pre-tightening bolt, which is threadedly arranged on the support frame, and the pre-tightening bolt has a pre-tightening end, which passes through the support frame along the first direction and extends into the through opening; wherein, the cable tie passes through the through opening, and the pre-tightening end presses the cable tie against the end plate.

[0016] As one of the optional embodiments of the present application, two pre-tightening members are provided on the end plate, and along the second direction, the pre-tightening members are provided on both sides of the locking block.

[0017] In the embodiment of the present application, before the free end of the cable tie is threadedly connected through the locking member, the pre-tightening member can be used to pre-tighten the cable tie so that the position of the cable tie near the free end is fixed. This can reduce the difficulty of positioning when the locking member is used for locking, making it more convenient and labor-saving, thereby improving the convenience of overall installation. The specific process includes the following steps: first, one free end of the cable tie is passed through the through-hole, so that part of the cable tie is located within the through-hole, and then the pre-tightening bolt is rotated, and finally the end of the pre-tightening bolt is abutted against the cable tie, and the cable tie is pressed against the end plate. At this time, the portion of the cable tie near one free end is fixed, and then the portion of the cable tie near the other free end is fixed using another pre-tightening member in the same way, which can finally facilitate the operation of the locking member.

[0018] As one of the optional embodiments of the present application, the strapping assembly further includes side plates. Along the second direction, the side plates are disposed on both sides of the battery pack, and the cable tie is disposed on a side of the side plate facing away from the battery pack.

[0019] As one of the optional implementation schemes of the present application, a limiting groove is provided on the side panel, the limiting groove passes through the side panel along a first direction, and the cable tie is passed through the limiting groove.

[0020] In the embodiment of the present application, the cable tie is at a certain distance from the side of the battery pack to ensure the insulation performance. The cooperation between the cable tie and the side plate can further fix the part of the cable tie corresponding to the side plate position, which further improves the stable and reliable fixing effect of the strapping assembly on the battery pack. When the battery pack is in a vibrating operating condition, it can still maintain a stable and reliable state, thereby ensuring the overall modality and performance of the battery pack.

[0021] An electrical device includes the above-mentioned battery pack.

[0022] One of the above technical solutions has the following advantages or beneficial effects: the bundling process is to first fit the end plate to the end of the battery pack, wrap the cable tie around the end plate and the outside of the battery pack, and make the free end be located at the end plate position, and then fix the free end to the locking block through the locking member and the locking hole. In the embodiment of the present application, since multiple locking holes are provided at the end of the cable tie, different locking forces can be generated by using the locking member in conjunction with different locking holes, which can be flexibly applied when facing different battery packs. Even in the same battery pack, the position of the matching locking hole can be adjusted as needed, thereby adjusting the locking force to better meet the needs of use. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The following detailed description of the specific embodiments of the present application in conjunction with the accompanying drawings will make the technical solutions and other beneficial effects of the present application apparent.

[0024] Figure 1 is an exploded structural diagram of a battery pack provided in an embodiment of the present application;

[0025] Figure 2 This is a structural diagram for illustrating a battery pack provided in an embodiment of the present application;

[0026] Figure 3 This is a diagram showing the overall structure of the strapping assembly provided in an embodiment of the present application;

[0027] Figure 4 This is a schematic diagram for illustrating the structure of a cable tie provided in an embodiment of the present application;

[0028] Figure 5 This is a partial view of a strapping assembly provided in an embodiment of the present application;

[0029] Figure 6 This is a partial top view of the embodiment of the present application for illustrating the structure of the pre-tightening member and the locking member;

[0030] Figure 7 1 is an exploded structural diagram for illustrating the structure of a locking member provided in an embodiment of the present application;

[0031] Figure 8 is a schematic diagram provided in an embodiment of the present application for illustrating a support frame structure;

[0032] Figure 9 Schematic diagram for illustrating the side panel structure provided in an embodiment of the present application.

[0033] Reference numerals: 1, box body; 11, bottom box; 110, accommodating cavity; 12, cover plate;

[0034] 2. Battery pack; 21. Battery cell;

[0035] 3. Bundle components;

[0036] 31, end plate; 311, locking block; 3110, middle opening;

[0037] 32. Cable tie; 321. Free end; 320. Keyhole;

[0038] 33. Locking member; 331. Locking bolt; 332. Locking nut; 333. Locking pressing piece; 333a. Pressing surface; 333b. Limiting surface;

[0039] 34. Pre-tightening member; 341. Support frame; 3410. Through port; 342. Pre-tightening bolt; 3420. Pre-tightening end;

[0040] 35. Middle belt;

[0041] 36, side panel; 360, limit slot; 361, limit plate;

[0042] 4. Gap;

[0043] X, first direction; Y, second direction; Z, third direction. DETAILED DESCRIPTION

[0044] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the embodiments described are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without making creative efforts are within the scope of protection of this application.

[0045] In the description of this application, it should be noted that, unless otherwise specified or limited, the term "and / or" herein is merely a description of an association relationship between associated objects, indicating that three possible relationships exist. For example, "A and / or B" can represent: A exists alone, A and B exist simultaneously, and B exists alone. Furthermore, the character " / " herein, unless otherwise specified, generally indicates that the associated objects are in an "or" relationship.

[0046] The following is combined with Figure 1-9 The technical solution of this application is described in detail.

[0047] Reference Figure 1-Figure 3 The present application discloses a battery pack having a first direction X, a second direction Y, and a third direction Z intersecting each other. The battery pack includes a housing 1, a battery pack 2, and a strapping assembly 3. The housing 1 includes a receiving cavity 110, in which the battery pack 2 and the strapping assembly 3 are both disposed. The strapping assembly 3 is used to strap and secure the battery pack 2 to ensure its stability.

[0048] The battery pack 2 includes a plurality of battery cells 21 stacked and arranged along a first direction X. The strapping assembly 3 includes an end plate 31, a cable tie 32, and a locking member 33. The end plate 31 is disposed at the end of the battery pack 2 in the first direction X. The cable tie 32 surrounds the end plate 31 and the outer periphery of the battery pack 2, with a portion of the cable tie 32 located on the side of the end plate 31 facing away from the battery pack 2. The cable tie 32 has at least two free ends 321. A plurality of locking holes 320 are defined along the length of the cable tie 32 from the free ends 321. A locking block 311 is provided on the side of the end plate 31 facing away from the battery pack 2. The free end 321 is fixedly connected to the locking block 311 via the locking member 33.

[0049] Specifically.

[0050] Reference Figure 1 In one example, the box body 1 includes a bottom box 11 and a cover plate 12 . The bottom box 11 is rectangular and has an open accommodating cavity 110 . The cover plate 12 is arranged along a third direction Z to cover the opening of the bottom box 11 and thereby close the accommodating cavity 110 .

[0051] Reference Figure 2 In one example, two battery packs 2 are provided, each battery pack 2 including a plurality of battery cells 21 stacked and arranged along a first direction X. The two battery packs 2 are spaced apart along a second direction Y, forming a gap 4 between the two battery packs 2. The battery cells 21 refer to battery cells, and in one example, the battery cells 21 are square.

[0052] It should be noted that the number of battery packs 2 is not limited. For example, in some optional embodiments, there may be one battery pack 2, or three or more battery packs 2.

[0053] Reference Figure 1 and Figure 3 In one example, two end plates 31 are provided. In the first direction X, the two end plates 31 are respectively provided at the two ends of the assembly formed by the two battery packs 2, and the end plates 31 are attached to the ends of the battery pack 2.

[0054] Reference Figure 1 、 Figure 3 and Figure 4 In one example, two sets of cable ties 32 are provided along the third direction Z. Each set of cable ties 32 has four free ends 321, which are grouped in pairs. The two sets of free ends 321 are located at the two ends of the battery pack 2 in the first direction X. The two free ends 321 at the same end of the battery pack 2 are locked and fixed to the locking block 311 using a locking member 33, thereby forming a frame-shaped set of cable ties 32 that surrounds the end plate 31 and the outer periphery of the battery pack 2, thereby achieving a bundling and fixing function.

[0055] It should be noted that the number of cable ties 32 is not limited, as long as the two free ends 321 of the cable ties 32 can match one end plate 31 and the locking member 33 for fixation.

[0056] In the embodiment of the present application, the bundling process is as follows: first, the end plate 31 is attached to the end of the battery pack 2, the cable tie 32 is wrapped around the end plate 31 and the outer periphery of the battery pack 2, and the free end 321 is positioned at the end plate 31. Then, the free end 321 is fixedly connected to the locking block 311 via the locking member 33 and the locking hole. In the embodiment of the present application, because the end of the cable tie 32 is provided with multiple locking holes 320, the locking member 33 can be used in conjunction with different locking holes 320 to generate different locking forces, which can be flexibly applied to different battery packs 2. Even within the same battery pack 2, the position of the locking hole 320 can be adjusted as needed, thereby adjusting the locking force to better suit the needs of use.

[0057] Since the matching structures of the two free ends 321 of the cable tie 32 and the end plate 31 and the locking member 33 are completely consistent, the following only describes the matching between the two free ends 321 of one set of cable ties 32 located at the same end of the battery pack 2 and the end plate 31 .

[0058] Reference Figure 5 、 Figure 6 and Figure 7 As one of the optional embodiments of the present application, the cable tie 32 has two free ends 321, which are respectively arranged on both sides of the locking block 311 in the second direction Y. The locking member 33 includes a locking bolt 331 and a locking nut 332. The locking bolt 331 penetrates the locking block 311 along the second direction Y, and the tail end of the locking bolt 331 passes through two adjacent locking holes 320 set along the second direction Y and is threadedly connected to the locking nut 332.

[0059] In the embodiment of the present application, during operation, the tail end of the locking bolt 331 first passes through the locking hole 320 on one free end 321, then passes through the locking block 311. After the tail end of the locking bolt 331 extends from the locking block 311, it passes through the locking hole 320 on the other free end 321. The locking nut 332 is then threaded onto the tail end of the locking bolt 331. The operation is simple and convenient, and no special tools are required for installation, which simplifies the installation process of the strapping assembly 3 and reduces the workload.

[0060] As one of the optional embodiments of the present application, the locking member 33 further includes a locking pressing piece 333 that is sleeved over the locking bolt 331. Along the second direction Y, the locking pressing piece 333 is disposed on the side of the cable tie 32 that faces away from the locking block 311. The locking pressing piece 333 has a pressing surface 333a facing the locking block 311. The locking pressing piece 333 abuts the cable tie 32 against the locking block 311. The locking pressing piece 333 has a limiting surface 333b facing the end plate 31. The locking pressing piece 333 abuts the cable tie 32 against the end plate 31 via the limiting surface 333b.

[0061] Specifically, a locking member 33 includes two locking pressing plates 333, which are arranged in a rectangular shape. The two locking pressing plates 333 are respectively arranged on both sides of the locking block 311 in the second direction Y, and the two locking pressing plates 333 are respectively pressed and fixed to the two free ends 321 of the cable tie 32.

[0062] In the embodiment of the present application, the locking pressure piece 333 presses the cable tie 32 onto the end plate 31 and the locking block 311 through the pressing surface 333a and the limiting surface 333b, ensuring the close contact between the cable tie 32 and the end plate 31, and can provide a more comprehensive pressing force to prevent the cable tie 32 from tilting relative to the end plate 31, thereby ensuring the stable bundling effect of the cable tie 32.

[0063] As one of the optional embodiments of the present application, the binding assembly 3 further includes a pre-tightening member 34. Two pre-tightening members 34 are provided, and in the first direction X, the pre-tightening members 34 are respectively provided on both sides of the locking block 311.

[0064] Specifically, the pre-tightening member 34 includes a support frame 341 and a pre-tightening bolt 342 threadedly mounted on the support frame 341. The support frame 341 is disposed on the side of the end plate 31 facing away from the battery pack 2. The support frame 341 is C-shaped, with its open end fixedly connected to the end plate 31. This leaves a through-hole 3410 between the support frame 341 and the end plate 31, and the through-hole 3410 extends through the support frame 341 along the second direction Y. The pre-tightening bolt 342 has a pre-tightening end 3420 that extends through the support frame 341 along the first direction X and into the through-hole 3410. The cable tie 32 passes through the through-hole 3410, and the pre-tightening end 3420 abuts the cable tie 32 against the end plate 31.

[0065] In the embodiment of the present application, before the free end 321 of the cable tie 32 is threadedly connected through the locking member 33, the pre-tightening member 34 can be used to pre-tighten the cable tie 32 so that the position of the cable tie 32 near the free end 321 is fixed. This can reduce the difficulty of positioning when locking with the locking member 33, making it more convenient and labor-saving, thereby improving the convenience of overall installation. The specific process includes the following steps: first, one free end 321 of the cable tie 32 is passed through the through-hole 3410, so that part of the cable tie 32 is located within the through-hole 3410, and then the pre-tightening bolt 342 is rotated, and finally the pre-tightening end 3420 of the pre-tightening bolt 342 is abutted against the cable tie 32, and the cable tie 32 is pressed against the end plate 31. At this time, the portion of the cable tie 32 near one free end 321 is fixed, and then the portion of the cable tie 32 near the other free end 321 is fixed using another pre-tightening member 34 in the same way. When the two free ends 321 that are separated from each other are fixed by the pre-tightening member 34, the free ends 321 will not be pulled by other parts of the cable tie 32 when being fixed by the locking member 33, which can greatly facilitate the locking operation of the locking member 33.

[0066] This arrangement also offers the following advantages: First, the locking member 33 secures the free end 321 to form a primary secure connection with the cable tie 32, while the pre-tensioning member 34 presses the cable tie 32 to form a secondary secure connection with the cable tie 32. This double secures the cable tie 32, ensuring the reliability of the cable tie 32. Second, after the pre-tensioning member 34 pre-compresses the cable tie 32, the portion of the cable tie 32 located away from the free end 321 is already shaped. When securing the free end 321, the portion will not be subject to the pulling force of the pre-tensioning member 34. Furthermore, the portion of the cable tie 32 located between the pre-tensioning member 34 and the free end 321 can be further adjusted, thereby performing a secondary tightening force adjustment.

[0067] Reference Figure 2 、 Figure 3 and Figure 8 As one of the optional embodiments of the present application, the strapping assembly 3 also includes an intermediate belt 35, which extends along the first direction X. The intermediate belt 35 is arranged in the gap 4, and one end of the intermediate belt 35 is fixedly connected to the end plate 31, and the other end of the intermediate belt 35 is fixed to the cable tie 32.

[0068] Specifically, a central opening 3110 is formed through the locking block 311 along the second direction Y. One end of the intermediate band 35 passes through the central opening 3110, and a locking bolt 331 passes through the intermediate band 35 to connect the intermediate band 35 to the locking block 311. The other end of the intermediate band 35 is also fixed to the end plate 31 via the locking bolt 331.

[0069] It can be understood that the locking bolt 331 passes through the locking holes 320 on the two free ends 321 and the middle band 35 at the same time, which enables a stable connection to be formed between the middle band 35 and the two free ends 321. When there are multiple battery packs 2, the cooperation of the middle band 35, the cable tie 32 and the end plate 31 can improve the overall stability of the strapping assembly 3, thereby ensuring the stability and reliability of the strapping assembly 3 for strapping the battery pack 2.

[0070] It should be noted that if only one battery pack 2 is provided, the setting of the middle belt 35 may be omitted.

[0071] Reference Figure 3 and Figure 9 As one of the optional embodiments of the present application, the strapping assembly 3 further includes side panels 36 , which are disposed on either side of the battery pack 2 along the second direction Y. The cable tie 32 is disposed on the side of the side panel 36 facing away from the battery pack 2 . A limiting slot 360 is defined on the side panel 36 , extending through the side panel 36 along the first direction X, and the cable tie 32 is disposed within the limiting slot 36 .

[0072] Specifically, an L-shaped retaining plate 361 is provided on the side of the side panel 36 facing away from the battery pack 2. The short side of the retaining plate 361 is fixedly connected to the side panel 36, and the space between the long side of the retaining plate 361 and the side panel 36 forms the aforementioned retaining groove 360. This leaves the retaining groove 360 ​​open, making it easier to place the cable tie 32 in the retaining groove 360 ​​and improving operational convenience.

[0073] In the embodiment of the present application, the cable tie 32 is at a certain distance from the side of the battery pack 2 to ensure insulation performance. The cooperation between the cable tie 32 and the side plate 36 can further fix the part of the cable tie 32 corresponding to the position of the side plate 36, which further improves the stable and reliable fixing effect of the strapping assembly 3 on the battery pack 2. When the battery pack 2 is in a vibrating operating condition, it can still maintain a stable and reliable state, thereby ensuring the overall modality and performance of the battery pack 2.

[0074] On the other hand, the present application also discloses an electrical device, including: the above-mentioned battery pack.

[0075] The above description is only a partial implementation of the embodiments of the present application and does not constitute any form of limitation to the application. The protection scope of the embodiments of the present application is not limited thereto. Any simple modifications, equivalent changes and modifications that can be easily thought of by any technician familiar with this technical field within the technical scope disclosed in the embodiments of the present application should be covered within the protection scope of the embodiments of the present application.

Claims

1. A battery pack, characterized in that: The battery pack has a first direction (X), and the battery pack includes: The box body (1) is provided with a receiving cavity (110); A battery pack (2) is disposed in the accommodating cavity (110), the battery pack (2) comprising a plurality of battery cells (211) stacked and arranged along the first direction (X); A bundling assembly (3) is arranged in the accommodating cavity (110), comprising an end plate (31), a cable tie (32), and a locking member (33), wherein the end plate (31) is arranged at the end of the battery pack (2) in the first direction (X), the cable tie (32) is arranged around the outer periphery of the end plate (31) and the battery pack (2), and a portion of the cable tie (32) is located on a side of the end plate (31) facing away from the battery pack (2); The cable tie (32) has at least two free ends (321), and along the length direction of the cable tie (32), the cable tie (32) is provided with a plurality of locking holes (320) from the free ends (321); a locking block (311) is provided on the side of the end plate (31) facing away from the battery pack (2), and the free end (321) is fixedly connected to the locking block (311) via the locking member (33).

2. The battery pack according to claim 1, wherein: The battery pack also has a second direction (Y) intersecting with the first direction (X); the cable tie (32) has two free ends (321), and the two free ends (321) are respectively arranged on both sides of the locking block (311) in the second direction (Y); the locking member (33) includes a locking bolt (331) and a locking nut (332); the locking bolt (331) passes through the locking block (311) along the second direction (Y); the tail end of the locking bolt (331) passes through two adjacent locking holes (320) arranged along the second direction (Y) and is threadedly connected to the locking nut (332).

3. The battery pack according to claim 2, wherein: The locking member (33) further includes a locking pressing piece (333) sleeved on the outside of the locking bolt (331); along the second direction (Y), the locking pressing piece (333) is arranged on the side of the cable tie (32) away from the locking block (311); the locking pressing piece (333) has a crimping surface (333a) facing the locking block (311); the locking pressing piece (333) presses the cable tie (32) against the locking block (311) through the crimping surface (333a).

4. The battery pack according to claim 3, wherein: The locking pressing piece (333) has a limiting surface (333b) facing the end plate (31), and the locking pressing piece (333) abuts the cable tie (32) against the end plate (31) via the limiting surface (333b).

5. The battery pack according to claim 2, wherein: A plurality of battery packs (2) are provided, and the plurality of battery packs (2) are arranged along the second direction (Y), with gaps (4) being left between adjacent battery packs (2); The bundling assembly (3) further includes an intermediate belt (35), the intermediate belt (35) extending along the first direction (X), the intermediate belt (35) being arranged in the gap (4), one end of the intermediate belt (35) being fixedly connected to the end plate (31), and the other end of the intermediate belt (35) being fixed to the strap (32).

6. The battery pack according to claim 1, wherein: The battery pack further has a second direction (Y) intersecting the first direction (X), and the strapping assembly (3) further includes a pre-tightening member (34), wherein the pre-tightening member (34) includes: A support frame (341) is arranged on a side of the end plate (31) facing away from the battery pack (2), a through opening (3410) is left between the support frame (341) and the end plate (31), and the through opening (3410) passes through the support frame (341) along the second direction (Y); a pre-tightening bolt (342) threadedly mounted on the support frame (341), the pre-tightening bolt (342) having a pre-tightening end (3420), the pre-tightening end (3420) penetrating the support frame (341) along the first direction (X) and extending into the through opening (3410); The cable tie (32) passes through the through opening (3410), and the pre-tightening end (3420) abuts the cable tie (32) against the end plate (31).

7. The battery pack according to claim 6, wherein: Two pre-tightening members (34) are provided on the end plate (31), and along the second direction (Y), the pre-tightening members (34) are respectively provided on both sides of the locking block (311).

8. The battery pack according to claim 1, wherein: The battery pack also has a second direction (Y) intersecting with the first direction (X), and the bundling assembly (3) also includes side plates (36). Along the second direction (Y), the side plates (36) are arranged on both sides of the battery pack (2), and the cable tie (32) is arranged on the side of the side plate (36) facing away from the battery pack (2).

9. The battery pack according to claim 8, wherein: A limiting groove (360) is provided on the side plate (36), the limiting groove (360) passes through the side plate (36) along the first direction (X), and the cable tie (32) is passed through the limiting groove (360).

10. An electrical device, characterized in that: include: The battery pack according to any one of claims 1 to 9.

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