Battery packs, battery boxes and electrical equipment

Abstract

The utility model relates to a battery pack, a battery box and an electric device, wherein the electric device comprises a battery box, on which a battery pack is arranged; the battery comprises an energy storage device, a peripheral limit device and a holding device, the energy storage device comprises at least two energy storage modules, each of which is arranged in parallel, and two adjacent energy storage modules are mutually supported; the peripheral limit device comprises at least two surrounding plates and a plurality of peripheral fixings, the left and right sides of each surrounding plate are provided with peripheral outer folding edges, each surrounding plate is provided with a lower limit folding edge, at least on some of the surrounding plates; the holding device comprises a pressing plate and an upper connecting assembly, the surrounding plate and the pressing plate are connected by the upper connecting assembly, so that the pressing plate and the lower limit folding edge jointly fix the energy storage device. In this way, the safety factor of use is improved, the energy density of the product is improved and the fixing structure of the product is simplified.

Description

Technical Field

[0001] The utility model relates to the field of batteries, in particular to a battery pack, a battery box and electrical equipment. Background Art

[0002] The battery pack contains multiple battery modules. The battery pack can be applied to various fields with energy storage or electricity demand, and is a very core part. Its performance directly affects the efficiency, safety and endurance of the entire system. The battery pack in the related technology will encounter the following technical problems in the specific application process:

[0003] First of all, in order to ensure the safety and stability of the battery cells, the battery packs in the related art often use a variety of fixings (such as metal brackets, straps, etc.) to fix the battery modules. Although this approach enhances the stability of the structure, it also introduces a large number of non-functional components, occupying valuable internal space. Too many fixed structures lead to an increase in the volume of the battery pack, which directly affects the energy density of the battery pack, that is, the amount of electrical energy that can be stored per unit volume or mass. In actual applications, low energy density will greatly limit the range or endurance of electrical equipment.

[0004] Secondly, when the battery pack is applied to electric vehicles or other mobile electrical equipment, high-frequency vibration will become the norm when facing complex road conditions. This continuous vibration can easily lead to relative displacement between battery modules, which may cause fatigue, loosening and even failure of the fixings over time. The misalignment between modules will not only damage the battery cells, but may also cause more serious safety accidents, such as battery short circuit, and the product's safety factor is poor. Utility Model Content

[0005] The technical problem to be solved by the utility model is to provide a battery pack, a battery box and an electrical device, which can solve the problems of low battery energy density and poor safety factor in use.

[0006] The first aspect of the utility model provides a battery pack, comprising:

[0007] The energy storage device comprises at least two energy storage modules, each of which is arranged in parallel, and two adjacent energy storage modules support each other;

[0008] The peripheral limit device comprises at least two surrounding plates and a plurality of peripheral fixing members, each of the surrounding plates is provided with peripheral outer folding edges on both sides, each of the surrounding plates is respectively abutted against the peripheral side faces of the energy storage device, and each two adjacent peripheral outer folding edges abut against each other and are fixed through the peripheral fixing members, each of the surrounding plates is provided with a lower limit folding edge, at least on some of the surrounding plates; and

[0009] The holding device comprises a pressing plate and an upper connecting assembly, wherein the pressing plate is connected to at least a part of the surrounding plate through the upper connecting assembly, so that the pressing plate and each lower limit folding edge clamp and fix the energy storage device from upper and lower sides respectively.

[0010] Preferably, the upper connecting component includes a first upper outer folding edge, a second upper outer folding edge and an upper connecting piece, the first upper outer folding edge is arranged on the pressure plate, the second upper outer folding edge is arranged on the surrounding plate, the pressure plate is supported on the top of the energy storage device, the first upper outer folding edge is supported on the second upper outer folding edge, and the upper connecting piece is configured to fix the relative position of the first upper outer folding edge and the second upper outer folding edge, so that each of the pressure plates and each of the lower limit folding edges clamps and fixes the energy storage device from the upper and lower sides respectively.

[0011] Preferably, the holding device comprises two first upper outer folding edges, and the two first upper outer folding edges are symmetrically arranged on the pressing plate; and / or

[0012] The first upper outer folded edge is integrally formed on the pressing plate; and / or

[0013] The first upper outer folded edge is L-shaped.

[0014] Preferably, the holding device comprises two second upper outer folded edges, and the two second upper outer folded edges are respectively arranged on the edges above the two surrounding plates; and / or

[0015] The two second upper outer folded edges are respectively integrally formed and arranged on the two surrounding plates.

[0016] Preferably, the energy storage module comprises an upper bracket, a lower bracket and a plurality of charge-discharge units, the upper bracket is provided with a plurality of upper fixing grooves, the lower bracket is provided with a plurality of lower fixing grooves, one end of each of the charge-discharge units is arranged in each of the upper fixing grooves in a one-to-one correspondence, and the other end of each of the charge-discharge units is arranged in each of the lower fixing grooves in a one-to-one correspondence;

[0017] Among them, each of the lower limit folding edges is supported on the lower bracket, and the pressure plate is supported on each of the upper brackets.

[0018] Preferably, the energy storage module further includes an upper cover and a clamping structure;

[0019] The snap-fit ​​structure includes a snap buckle and a snap-fit ​​hole, one of the snap buckle and the snap-fit ​​hole is arranged on the upper cover, and the other of the snap buckle and the snap-fit ​​hole is arranged on the upper bracket. The snap buckle is snapped with the snap-fit ​​hole to fix the relative position of the upper cover and the upper bracket, and the pressure plate is supported on each of the upper covers.

[0020] Preferably, the peripheral limit device further comprises a bottom limit plate and a plurality of peripheral limit plates, the bottom limit plate is supported on the bottom of each of the energy storage devices, each of the peripheral limit plates is arranged between the surrounding plate and the energy storage device, and each of the peripheral limit plates is clamped between the energy storage device and the surrounding plate; or

[0021] A hoisting notch is arranged on each of the outer folded edges of the peripheral edge, and the hoisting notches on two adjacent outer folded edges of the peripheral edge are aligned with each other.

[0022] Preferably, each of the enclosing plates comprises two short enclosing plates and two long enclosing plates, and the peripheral outer folding edges are arranged on opposite sides of each of the short enclosing plates, and the peripheral outer folding edges are arranged on opposite sides of each of the long enclosing plates;

[0023] The two short enclosures and the two long enclosures are arranged one by one around the peripheral side of the energy storage device, and the two short enclosures and the two long enclosures are arranged alternately.

[0024] The second aspect of the utility model provides a battery box, the battery box includes the battery pack described in any one of the above technical solutions, the battery box also includes a box body and a positioning mechanism, the box body is provided with a storage cavity, the battery pack is arranged in the storage cavity, and each of the lower limit folding edges is supported on the bottom of the storage cavity;

[0025] The positioning mechanism includes a plurality of baffles, wherein the baffles are disposed between at least a portion of the surrounding plates and the inner wall of the storage cavity, and the baffles are respectively supported against the surrounding plates and the inner wall of the storage cavity.

[0026] A third aspect of the utility model provides an electrical device, the electrical device comprising a frame and a battery box, wherein the battery box is arranged on the frame.

[0027] The implementation of this utility model has the following beneficial effects:

[0028] The utility model relates to a battery pack, a battery box and an electric device. The electric device includes a battery box, and a battery pack is arranged on the battery box. On the battery pack, each battery module is configured to directly support each other, that is, two adjacent battery modules are in direct face-to-face contact, that is, two adjacent battery modules are not unable to directly contact each other due to the provision of an intermediate element or an intermediate structure, thereby achieving effective use of space, thereby being able to improve the energy density of the product, and preventing each energy storage module from being misaligned with each other, thereby improving the safety factor of use; at the same time, by arranging the peripheral outer folding edge, the first upper outer folding edge and the second upper outer folding edge, the connection position between the surrounding plates and between the pressure plate and the surrounding plate will not cause too much influence on the energy storage module, thereby further improving the energy density of the product;

[0029] Furthermore, by setting the surrounding plates, pressure plates and lower limit folded edges, the positions of each energy storage module can be effectively limited in the circumferential direction and the longitudinal direction. On the one hand, it can greatly simplify the structure required to fix the energy storage modules. On the other hand, it can further avoid the misalignment of the energy storage modules, thereby further improving the safety factor of the product. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] The above and other objects, features and advantages of the present invention will become more apparent by describing in more detail exemplary embodiments of the present invention in conjunction with the accompanying drawings, wherein the same reference numerals generally represent the same components in the exemplary embodiments of the present invention.

[0031] Figure 1 It is a schematic diagram of the structure of the battery box in some embodiments of the utility model;

[0032] Figure 2 is another structural schematic diagram of a battery box in some embodiments of the utility model;

[0033] Figure 3 is an exploded view of a battery box in some embodiments of the utility model;

[0034] Figure 4 is a schematic diagram of the structure of a battery pack in some embodiments of the utility model;

[0035] Figure 5 is an exploded view of a battery pack in some embodiments of the present utility model;

[0036] Figure 6 is another exploded view of a battery pack in some embodiments of the present invention;

[0037] Figure 7 From another perspective Figure 6 Exploded view of the battery pack shown.

[0038] Description of Figure Numbers:

[0039] 10-battery pack; 20-battery box; 30-box; 50-storage cavity; 40-positioning mechanism; 60-baffle;

[0040] 1-energy storage device; 11-energy storage module; 111-upper bracket; 1111-upper fixing groove; 112-lower bracket; 1121-lower fixing groove; 113-charge and discharge unit; 114-upper cover; 115-clamping structure; 1151-clamping buckle; 1152-clamping hole;

[0041] 2-peripheral limit device; 21-enclosing plate; 211-peripheral outer folding edge; 2111-lifting notch; 212-lower limit folding edge; 213-short enclosure; 214-long enclosure; 22-peripheral fixing piece; 23-bottom limit plate; 24-peripheral limit plate;

[0042] 3-pressing device; 31-pressing plate; 32-upper connecting assembly; 321-first upper outer folding edge; 322-second upper outer folding edge; 323-upper connecting piece. DETAILED DESCRIPTION

[0043] The embodiments of the present invention will be described in more detail below with reference to the accompanying drawings. Although the embodiments of the present invention are shown in the accompanying drawings, it should be understood that the present invention can be implemented in various forms and should not be limited by the embodiments described herein. On the contrary, these embodiments are provided to make the present invention more thorough and complete, and to fully convey the scope of the present invention to those skilled in the art.

[0044] It should be understood that although the terms "first", "second", "third", etc. may be used to describe various information in the present invention, this information should not be limited to these terms. These terms are only used to distinguish the same type of information from each other. For example, without departing from the scope of the present invention, the first information may also be referred to as the second information, and similarly, the second information may also be referred to as the first information. Thus, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "multiple" is two or more, unless otherwise clearly and specifically defined.

[0045] In the description of the present invention, it should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0046] Unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection or an integrated connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in this utility model can be understood according to specific circumstances.

[0047] Figure 3 and Figure 4 The battery pack 10 in some embodiments of the present invention is shown. The battery pack 10 can be charged and discharged, and can be applied to various fields requiring the charging and discharging functions.

[0048] The battery pack 10 includes an energy storage device 1 , a peripheral limit device 2 and a pressing device 3 . The peripheral limit device 2 and the pressing device 3 are connected to each other, and the peripheral limit device 2 and the pressing device 3 are used together to fix the energy storage device 1 .

[0049] like Figures 5 to 7 As shown, the energy storage device 1 includes at least two energy storage modules 11 , each energy storage module 11 is arranged in parallel one by one, and two adjacent energy storage modules 11 support each other.

[0050] It can be understood that each energy storage module 11 is designed to be arranged in parallel one by one, that is, each energy storage module 11 is adjacent to the previous energy storage module 11, and two adjacent energy storage modules 11 can be supported by each other through the peripheral limit device 2 to ensure the stability and structural strength of the entire energy storage device 1.

[0051] like Figures 4 to 7 As shown, the peripheral limiting device 2 includes at least two surrounding plates 21 and a plurality of peripheral fixing members 22. A peripheral outer folding edge 211 is provided on the left and right sides of each surrounding plate 21. Each surrounding plate 21 is respectively abutted against the peripheral side surface of the energy storage device 1. Every two adjacent peripheral outer folding edges 211 are abutted against each other and are fixed through the peripheral fixing members 22. A lower limiting folding edge 212 is provided on each surrounding plate 21, at least on a portion of the surrounding plates 21.

[0052] It can be understood that the peripheral limit device 2 is composed of at least two surrounding plates 21 and a plurality of peripheral fixings 22. The left and right sides of each surrounding plate 21 are provided with peripheral outer folds 211, and these outer folds 211 are used to cooperate with the peripheral outer folds 211 of adjacent surrounding plates 21. When the surrounding plates 21 are respectively abutted against the peripheral side surfaces of the energy storage device 1, each two adjacent peripheral outer folds 211 abut against each other and are fixed by the peripheral fixings 22. The fixing methods may include but are not limited to screw connection, riveting, welding, etc.

[0053] In addition, each of the surrounding plates 21 is provided with a lower limit folding edge 212, which is located at the bottom of the surrounding plates 21 and is used to contact and fix the bottom of the energy storage device 1 or the energy storage module 11. At least some of the surrounding plates 21 are provided with a lower limit folding edge 212, and each lower limit folding edge 212 is in contact with the bottom of the energy storage device 1, thereby supporting and limiting the energy storage device 1 in the longitudinal direction.

[0054] like Figures 4 to 7As shown, the holding device 3 includes a pressing plate 31 and an upper connecting assembly 32. The pressing plate 31 is connected to at least a portion of the surrounding plate 21 through the upper connecting assembly 32, so that the pressing plate 31 and each lower limit folding edge 212 clamp and fix the energy storage device 1 from the upper and lower sides respectively.

[0055] It is understandable that the pressing plate 31 can be configured to be directly supported on the energy storage module 11, or it can be configured that the pressing plate 31 is supported on the energy storage module 11 through other intermediate components, as long as each energy storage module 11 can be reliably fixed between the pressing plate 31 and the lower limit folding edge 212. The specific implementation of the upper connection component 32 may include but is not limited to screw connection, snap connection, etc.

[0056] In addition, the energy density of the product is improved because the energy storage modules 11 directly support each other, that is, the remaining components are prevented from occupying the space actually used by the energy storage module 11 as much as possible within the limited installation space. On the other hand, due to the effective fixation of the peripheral limit device 2 and the pressing device 3, the structure required to fix the energy storage module 11 is reduced, and more installation space is further avoided for the energy storage module 11, thereby further improving the energy density of the product.

[0057] like Figures 4 to 7 As shown, in some embodiments, the upper connecting component 32 includes a first upper outer folded edge 321, a second upper outer folded edge 322 and an upper connecting member 323. The first upper outer folded edge 321 is arranged on the pressure plate 31, and the second upper outer folded edge 322 is arranged on the surrounding plate 21. The pressure plate 31 is supported above the energy storage device 1, and the first upper outer folded edge 321 is supported on the second upper outer folded edge 322. The upper connecting member 323 is configured to fix the relative position of the first upper outer folded edge 321 and the second upper outer folded edge 322, so that each pressure plate 31 and each lower limit folded edge 212 clamps and fixes the energy storage device 1 from the upper and lower sides respectively.

[0058] It can be understood that the first upper outer folding edge 321 is arranged on the pressure plate 31, and the second upper outer folding edge 322 is arranged on the surrounding plate 21. When the pressure plate 31 is supported on the top of the energy storage device 1, the first upper outer folding edge 321 contacts and supports the second upper outer folding edge 322. At this time, the upper connecting member 323 is used to fix the relative position of the first upper outer folding edge 321 and the second upper outer folding edge 322 to ensure that the pressure plate 31 can be stably pressed on the energy storage device 1. The specific implementation method of the upper connecting member 323 may include but is not limited to screw connection, snap connection, etc.

[0059] In actual use, each pressing plate 31 and each lower limit folding edge 212 clamp and fix the energy storage device 1 from the upper and lower sides, thereby forming a stable fixed structure. This structure can effectively prevent the energy storage device 1 from shaking or displacement during transportation, installation or use, and ensure the stability and safety of the energy storage device 1.

[0060] like Figure 5 and Figure 6 As shown, in some embodiments of the battery pack 10 , the pressing device 3 includes two first upper outer folding edges 321 , and the two first upper outer folding edges 321 are symmetrically arranged on the pressing plate 31 .

[0061] It can be understood that the two first upper outer folds 321 are symmetrically arranged on the pressing plate 31, and the specific implementation method can be to arrange a first upper outer fold 321 on both sides of the pressing plate 31, and they are mirror-symmetrical with respect to the center line of the pressing plate 31. This symmetrical design enables the holding device 3 to apply uniform force when fixing the energy storage device 1, avoiding structural deformation or damage caused by excessive or insufficient local pressure.

[0062] On the surrounding plate 21 of the peripheral limit device 2, a second upper outer fold 322 corresponding to the first upper outer fold 321 is provided. When the pressing plate 31 is supported on the top of the energy storage device 1, the two first upper outer folds 321 are respectively supported on the two second upper outer folds 322. At this time, the first upper outer fold 321 and the second upper outer fold 322 are fixed together by the upper connecting member 323, thereby ensuring a stable connection between the pressing plate 31 and the peripheral limit device 2.

[0063] In some embodiments of the battery pack 10 , the first upper outer folded edge 321 is integrally formed on the pressing plate 31 .

[0064] It can be understood that the one-piece design not only enhances the connection strength between the pressing plate 31 and the first upper outer folding edge 321, but also makes the structure of the entire pressing device 3 more compact and stable. Secondly, the one-piece design simplifies the manufacturing process of the pressing device 3, and also makes the installation process simpler and faster. The operator only needs to place the pressing plate 31 above the energy storage device 1, and then align and fix the first upper outer folding edge 321 with the second upper outer folding edge 322.

[0065] It should be noted that the pressing plate 31 and the first upper outer folding edge 321 can be integrally formed by stamping, bending, etc. Such an integral forming process can ensure that the connection between the first upper outer folding edge 321 and the pressing plate 31 is seamless and gap-free, thereby improving the sealing and stability of the entire pressing device 3.

[0066] like Figures 4 to 7 As shown, in some embodiments of the battery pack 10 , the pressing device 3 includes two second upper outer folding edges 322 , and the two second upper outer folding edges 322 are respectively arranged on the edges above the two surrounding plates 21 .

[0067] It can be understood that by arranging the two second upper outer folding edges 322 at the edges above the two surrounding plates 21 and cooperating with the first upper outer folding edges 321, a stable connection between the pressing device 3 and the peripheral limit device 2 can be ensured. This connection method can prevent the energy storage device 1 from moving or deforming when subjected to external forces, thereby improving the stability of the entire energy storage system.

[0068] In some embodiments of the battery pack 10 , the two second upper outer folded edges 322 are respectively integrally formed on the two surrounding plates 21 .

[0069] It can be understood that the two second upper outer folding edges 322 are respectively formed integrally on the edges above the two surrounding plates 21. Since the second upper outer folding edges 322 and the surrounding plates 21 are formed integrally, the connection between them is very strong, which can prevent separation or deformation when subjected to force. This stability ensures a reliable connection between the holding device 3 and the peripheral limit device 2, thereby improving the structural stability of the entire energy storage system.

[0070] Furthermore, the one-piece design reduces the number of steps and parts in the manufacturing process, thereby reducing manufacturing costs and improving production efficiency. In addition, since there are no additional connectors or welding points, potential failure points are also reduced, improving product reliability.

[0071] like Figures 4 to 7 As shown, in some embodiments of the battery pack 10 , the first upper outer folded edge 321 is L-shaped.

[0072] It can be understood that the cross section of the first upper outer folded edge 321 is L-shaped or substantially L-shaped. Specifically, the L-shaped structure includes a vertical portion perpendicular to the pressing plate 31 and a horizontal portion extending outward from the vertical portion. This design allows the first upper outer folded edge 321 to be folded or bent outward when necessary to adapt to different installation environments and shapes of the energy storage device 1.

[0073] It should be noted that the L-shaped first upper outer fold 321 enables the pressing plate 31 to leave a certain installation space for the necessary connecting elements on the top of the energy storage module 11 .

[0074] like Figures 5 to 7 As shown, in some embodiments of the battery pack 10, the energy storage module 11 includes an upper bracket 111, a lower bracket 112 and a plurality of charge and discharge units 113, the upper bracket 111 is provided with a plurality of upper fixing grooves 1111, the lower bracket 112 is provided with a plurality of lower fixing grooves 1121, one end of each charge and discharge unit 113 is correspondingly arranged in each upper fixing groove 1111, and the other end of each charge and discharge unit 113 is correspondingly arranged in each lower fixing groove 1121; each lower limit folding edge 212 is supported on the lower bracket 112, and the pressure plate 31 is supported on each upper bracket 111.

[0075] It can be understood that the upper bracket 111 is the top support structure of the energy storage module 11 and is provided with a plurality of upper fixing grooves 1111. These upper fixing grooves 1111 are used to fix one end of the charge-discharge unit 113 to ensure the stable position of the charge-discharge unit 113 on the upper bracket 111.

[0076] The lower bracket 112 is the bottom support structure of the energy storage module 11, corresponding to the upper bracket 111. The lower bracket 112 is also provided with a plurality of lower fixing grooves 1121, which correspond to the upper fixing grooves 1111 and are used to fix the other end of the charge-discharge unit 113. Through this upper and lower corresponding fixing method, the charge-discharge unit 113 can be firmly installed between the upper bracket 111 and the lower bracket 112.

[0077] The charge-discharge unit 113 is used to store and release electric energy. One end of each charge-discharge unit 113 is arranged in each upper fixing groove 1111, and the other end is arranged in each lower fixing groove 1121. This arrangement allows the charge-discharge units 113 to be neatly and orderly arranged in the energy storage module 11, while ensuring their position stability during operation.

[0078] It can also be understood that the lower limit fold 212 and the holding device 3 work together to firmly fix the energy storage module 11 in a predetermined position. This all-round fixing method can ensure the stability and safety of the energy storage module 11 during use. Thus, while the position stability is improved by direct contact between the energy storage modules 11, the position stability of each energy storage module 11 is further improved by the external limit structure, further improving the safety factor of the product.

[0079] like Figure 6 and Figure 7 As shown, in some embodiments of the battery pack 10, the energy storage module 11 further includes an upper cover 114 and a clamping structure 115;

[0080] The snap-fit ​​structure 115 includes a snap 1151 and a snap hole 1152. One of the snap 1151 and the snap hole 1152 is set on the upper cover 114, and the other of the snap 1151 and the snap hole 1152 is set on the upper bracket 111. The snap 1151 and the snap hole 1152 are snapped together to fix the relative position of the upper cover 114 and the upper bracket 111, and the pressure plate 31 is supported on each upper cover 114.

[0081] It can be understood that the upper cover 114 is the top cover of the energy storage module 11, which is used to protect the charging and discharging unit 113 and other key components inside the module. When the upper cover 114 and the upper bracket 111 are in the correct relative position and assembled, the buckle 1151 and the snap-fit ​​hole 1152 can be snapped together, thereby achieving a stable fixation of the upper cover 114.

[0082] It should be noted that, by using the buckle 1151 and the snap-fit ​​hole 1152 in coordination, the upper cover 114 and the upper bracket 111 can be quickly fixed, avoiding complicated screw or bolt connections, making the assembly process simpler and faster, improving production efficiency, and reducing production costs.

[0083] like Figures 5 to 7 As shown, in some embodiments of the battery pack 10, the peripheral limit device 2 also includes a bottom limit plate 23 and a plurality of peripheral limit plates 24, the bottom limit plate 23 is supported on the bottom of each energy storage device 1, and each peripheral limit plate 24 is arranged between the surrounding plate 21 and the energy storage device 1, and each peripheral limit plate 24 is clamped between the energy storage device 1 and the surrounding plate 21.

[0084] It can be understood that the bottom limit plate 23 is designed to be supported on the bottom of the energy storage device 1. This effectively prevents the energy storage device 1 from moving or tilting inside the battery pack, especially in the case of vibration or impact. The contact surface between the bottom limit plate 23 and the bottom of the energy storage device can be further provided with anti-slip or shock-absorbing materials to further improve stability.

[0085] The peripheral limit plates 24 are arranged between the surrounding plate 21 and the energy storage device 1. These limit plates can be arranged around the four sides or specific parts of the energy storage device 1 to ensure that the energy storage device 1 is also firmly fixed in the horizontal direction. Each peripheral limit plate 24 is clamped between the energy storage device 1 and the surrounding plate 21, so that the energy storage device 1 is not easily displaced when subjected to external force.

[0086] like Figure 4 As shown, in some embodiments of the battery pack 10 , a hanging notch 2111 is provided on each peripheral outer fold edge, and the hanging notches 2111 on two adjacent peripheral outer fold edges 211 are aligned with each other.

[0087] It should be noted that each hoisting notch 2111 is used for hoisting the battery pack 10. Because the peripheral outer folded edges 211 all extend away from the energy storage module 11, the hoisting notch 2111 will not affect the installation space required for the energy storage module 11, thereby ensuring the energy density of the product.

[0088] In addition, the peripheral outer folded edge 211 has a certain protrusion relative to the portion of the surrounding plate 21 that abuts against the energy storage module 11, so that the lifting connection knot used for lifting can be easily connected to the lifting notch 2111, thereby improving the installation convenience of the product.

[0089] like Figures 5 to 7 As shown, in some embodiments of the battery pack 10, each surrounding plate 21 includes two short surrounding plates 213 and two long surrounding plates 214, and each short surrounding plate 213 is provided with peripheral outer folding edges 211 on two opposite sides, and each long surrounding plate 214 is provided with peripheral outer folding edges 211 on two opposite sides;

[0090] The two short enclosures 213 and the two long enclosures 214 are disposed one by one around the peripheral side of the energy storage device 1 , and the two short enclosures 213 and the two long enclosures 214 are disposed alternately.

[0091] It can be understood that the two short enclosures 213 and the two long enclosures 214 are arranged one by one around the peripheral side of the energy storage device 1, which can ensure that the energy storage device 1 is fully protected and fixed inside the battery pack 10.

[0092] It should be noted that the two short enclosures 213 are used to support the side of the energy storage device 1 with a smaller surface area, and the two long enclosures 214 are used to support the side of the energy storage device 1 with a larger surface area.

[0093] Figures 1 to 3 The battery box 20 in some embodiments of the present invention is shown. The battery box 20 includes a battery pack 10 , a box body 30 and a positioning mechanism 40 .

[0094] It can be understood that the box 30 is used to accommodate the battery pack 10 . The positioning mechanism 40 is used to fix the battery pack 10 in the box 30 .

[0095] like Figures 1 to 3 As shown, a storage cavity 50 is opened on the box body 30, and the battery pack 10 is arranged in the storage cavity 50, and each lower limit fold edge 212 is supported on the bottom of the storage cavity 50; the positioning mechanism 40 includes a plurality of baffles 60, and the baffles 60 are arranged between at least part of the surrounding plate 21 and the inner wall of the storage cavity 50, and the baffles 60 are respectively supported on the surrounding plate 21 and the inner wall of the storage cavity 50.

[0096] It can be understood that the box body 30 can be configured to open one or more storage chambers 50. The size and shape of the storage chamber 50 match the battery pack 10 and are used to accommodate and fix the battery pack 10. The positioning mechanism 40 includes a plurality of baffles 60. The baffles 60 are used to further fix and position the battery pack 10. The baffles 60 are respectively supported on the surrounding plate 21 and the inner wall of the storage chamber 50 to ensure that the position of the battery pack 10 in the storage chamber 50 is stable and will not move or shake during transportation or use.

[0097] The electric device of the present invention comprises a frame and a battery box 20 , wherein the battery box 20 is disposed on the frame.

[0098] It can be understood that the electrical equipment can be various devices, equipment, mechanisms or systems in the prior art that work with electrical energy. Therefore, the frame can also be adjusted accordingly according to the specific application requirements of the electrical equipment. For example, if the electrical equipment is a power distribution device, the frame can be set to the frame of a power distribution cabinet; if the electrical equipment is an electric vehicle, the frame can be set to the frame of a vehicle; if the electrical equipment is an electric tool, the frame can be set to the frame of an electric tool.

[0099] The implementation of this utility model has the following beneficial effects:

[0100] The utility model relates to a battery pack, a battery box and an electric device. The electric device includes a battery box, and a battery pack is arranged on the battery box. On the battery pack, each battery module is configured to directly support each other, that is, two adjacent battery modules are in direct face-to-face contact, that is, two adjacent battery modules are not unable to directly contact each other due to the provision of an intermediate element or an intermediate structure, thereby achieving effective use of space, thereby being able to improve the energy density of the product, and preventing each energy storage module from being misaligned with each other, thereby improving the safety factor of use; at the same time, by arranging the peripheral outer folding edge, the first upper outer folding edge and the second upper outer folding edge, the connection position between the surrounding plates and between the pressure plate and the surrounding plate will not cause too much influence on the energy storage module, thereby further improving the energy density of the product;

[0101] Furthermore, by setting the surrounding plates, pressure plates and lower limit folded edges, the positions of each energy storage module can be effectively limited in the circumferential direction and the longitudinal direction. On the one hand, it can greatly simplify the structure required to fix the energy storage modules. On the other hand, it can further avoid the misalignment of the energy storage modules, thereby further improving the safety factor of the product.

[0102] The scheme of the utility model has been described in detail above with reference to the accompanying drawings. In the above embodiments, the description of each embodiment has its own emphasis. For parts that are not described in detail in a certain embodiment, please refer to the relevant description of other embodiments. Those skilled in the art should also know that the actions and modules involved in the specification are not necessarily required for the utility model. In addition, it can be understood that the steps in the method of the embodiment of the utility model can be adjusted in order, merged and deleted according to actual needs, and the modules in the device of the embodiment of the utility model can be merged, divided and deleted according to actual needs.

[0103] The embodiments of the present invention have been described above, and the above description is exemplary, not exhaustive, and is not limited to the disclosed embodiments. Many modifications and changes are obvious to those of ordinary skill in the art without departing from the scope and spirit of the described embodiments. The selection of terms used herein is intended to best explain the principles of the embodiments, practical applications, or improvements to the technology in the market, or to enable other persons of ordinary skill in the art to understand the embodiments disclosed herein.

Claims

1. A battery pack, characterized in that: include: An energy storage device (1), the energy storage device (1) comprising at least two energy storage modules (11), each of the energy storage modules (11) being arranged in parallel one by one, and two adjacent energy storage modules (11) supporting each other; A peripheral limiting device (2) comprises at least two surrounding plates (21) and a plurality of peripheral fixing members (22), each of the surrounding plates (21) being provided with peripheral outer folding edges (211) on both sides thereof, each of the surrounding plates (21) being respectively supported on the peripheral side surface of the energy storage device (1), each two adjacent peripheral outer folding edges (211) being supported on each other and being fixed by passing through the peripheral fixing members (22), and each of the surrounding plates (21) being provided with a lower limiting folding edge (212); and The holding device (3) comprises a holding plate (31) and an upper connecting assembly (32), wherein the holding plate (31) is connected to at least a portion of the surrounding plate via the upper connecting assembly (32), so that the holding plate (31) and each of the lower limit folding edges (212) clamp and fix the energy storage device (1) from upper and lower sides respectively.

2. The battery pack according to claim 1, characterized in that: The upper connection component (32) comprises a first upper outer folding edge (321), a second upper outer folding edge (322) and an upper connection member (323); the first upper outer folding edge (321) is arranged on the pressure plate (31); the second upper outer folding edge (322) is arranged on the surrounding plate (21); the pressure plate (31) is supported above the energy storage device (1); the first upper outer folding edge (321) is supported on the second upper outer folding edge (322); and the upper connection member (323) is configured to fix the relative position of the first upper outer folding edge (321) and the second upper outer folding edge (322), so that each of the pressure plates (31) and each of the lower limit folding edges (212) clamp and fix the energy storage device (1) from upper and lower sides respectively.

3. The battery pack according to claim 2, characterized in that: The holding device (3) comprises two first upper outer folded edges (321), and the two first upper outer folded edges (321) are symmetrically arranged on the pressing plate (31); and / or The first upper outer folded edge (321) is L-shaped; and / or The first upper outer folding edge (321) is integrally formed and arranged on the pressing plate (31).

4. The battery pack according to claim 2 or 3, characterized in that: The holding device (3) comprises two second upper outer folded edges (322), and the two second upper outer folded edges (322) are respectively arranged on the edges above the two surrounding plates (21); and / or The two second upper outer folding edges (322) are respectively integrally formed and arranged on the two surrounding plates (21).

5. The battery pack according to claim 1, characterized in that: The energy storage module (11) comprises an upper bracket (111), a lower bracket (112) and a plurality of charge-discharge units (113); the upper bracket (111) is provided with a plurality of upper fixing grooves (1111); the lower bracket (112) is provided with a plurality of lower fixing grooves (1121); one end of each of the charge-discharge units (113) is arranged in a one-to-one correspondence in each of the upper fixing grooves (1111); and the other end of each of the charge-discharge units (113) is arranged in a one-to-one correspondence in each of the lower fixing grooves (1121); Wherein, each of the lower limit folding edges (212) is supported on the lower bracket (112), and the pressing plate (31) is supported on each of the upper brackets (111).

6. The battery pack according to claim 5, characterized in that: The energy storage module (11) further comprises an upper cover (114) and a clamping structure (115); The snap-fit ​​structure (115) comprises a snap (1151) and a snap-fit ​​hole (1152); one of the snap (1151) and the snap-fit ​​hole (1152) is arranged on the upper cover (114); the other of the snap (1151) and the snap-fit ​​hole (1152) is arranged on the upper bracket (111); the snap (1151) and the snap-fit ​​hole (1152) are snap-fitted to fix the relative position of the upper cover (114) and the upper bracket (111); and the pressure plate (31) is supported on each of the upper covers (114).

7. The battery pack according to claim 1, 5 or 6, characterized in that: The peripheral limit device (2) further comprises a bottom limit plate (23) and a plurality of peripheral limit plates (24), wherein the bottom limit plate (23) is supported on the bottom of each of the energy storage devices (1), and each of the peripheral limit plates (24) is arranged between the surrounding plate (21) and the energy storage device (1), and each of the peripheral limit plates (24) is clamped between the energy storage device (1) and the surrounding plate (21); or A hoisting notch (2111) is provided on each of the peripheral outer folded edges, and the hoisting notches (2111) on two adjacent peripheral outer folded edges (211) are aligned with each other.

8. The battery pack according to claim 1, characterized in that: Each of the surrounding plates (21) comprises two short surrounding plates (213) and two long surrounding plates (214), and each of the short surrounding plates (213) is provided with the peripheral outer folding edges (211) on two opposite sides, and each of the long surrounding plates (214) is provided with the peripheral outer folding edges (211) on two opposite sides; The two short enclosures (213) and the two long enclosures (214) are arranged one by one around the peripheral side of the energy storage device (1), and the two short enclosures (213) and the two long enclosures (214) are arranged alternately.

9. A battery box, characterized in that: The battery box (20) comprises a battery pack according to any one of claims 1 to 8, the battery box (20) further comprising a box body (30) and a positioning mechanism (40), the box body (30) being provided with a storage cavity (50), the battery pack being arranged in the storage cavity (50), and each of the lower limit folding edges (212) being supported on the bottom of the storage cavity (50); The positioning mechanism (40) comprises a plurality of baffles (60), wherein the baffles (60) are arranged between at least a portion of the surrounding plate (21) and the inner wall of the storage cavity (50), and the baffles (60) are respectively abutted against the surrounding plate (21) and the inner wall of the storage cavity (50).

10. An electrical device, characterized in that: The electrical equipment comprises a frame and at least one battery box (20) according to claim 9, and the battery box (20) is arranged on the frame.

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