Battery box, energy storage device and electric equipment

Abstract

The utility model discloses a battery box, an energy storage device and electric equipment, the battery box comprises a box body, a first rib plate and a second rib plate, and the box body is provided with an accommodating cavity; the first rib plate is contained in the containing cavity, fixedly connected with the box body and extends in the first direction. The second rib plate is contained in the containing cavity, fixedly connected with the box body and extends in the first direction, the second rib plate and the first rib plate are oppositely arranged in the second direction, a containing space is formed between the second rib plate and the first rib plate, and the second direction intersects with the first direction; the accommodating space is suitable for accommodating a battery module, the battery module comprises a plurality of soft package battery cells, the plurality of soft package battery cells are sequentially arranged along a second direction, and the first rib plate and the second rib plate are suitable for abutting against the plurality of soft package battery cells. Compared with a traditional module shell screw locking mode, more connecting positions can be arranged, the bearing area of the matched position is larger, the probability of stress concentration can be reduced, and the risk of local structure deformation fatigue failure in the using and transporting process is reduced.

Description

Technical Field

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

[0002] With the development of the new energy industry, energy storage products are rapidly gaining popularity among users. Energy storage products may be damaged by vibration during use and transportation, so it is necessary to design relevant anti-vibration structures.

[0003] At present, the main structural form of energy storage products is to install multiple battery cells into a module shell to form a battery module, and then fix the battery module to the battery pack shell. The connection between the module shell and the battery pack shell is usually fixed with locking screws. The bearing area of ​​the screws, the module shell and the battery pack shell is small, which is prone to stress concentration. There is a risk of local structural deformation and fatigue failure during use and transportation. Utility Model Content

[0004] The utility model aims to provide a battery box, an energy storage device and electrical equipment to solve the problem of stress concentration.

[0005] In order to achieve the purpose of the utility model, the utility model provides the following technical solutions:

[0006] In a first aspect, the utility model provides a battery box, comprising:

[0007] A box body having a containing cavity;

[0008] A first rib plate, received in the accommodation cavity, connected and fixed to the box body and extending along a first direction;

[0009] a second rib plate, received in the accommodating cavity, connected and fixed to the box body and extending along the first direction, the second rib plate and the first rib plate being arranged opposite to each other in the second direction and forming an accommodating space therebetween, and the second direction intersects with the first direction;

[0010] The receiving space is suitable for receiving a battery module, wherein the battery module comprises a plurality of soft-pack battery cells, wherein the plurality of soft-pack battery cells are arranged in sequence along the second direction, and the first rib plate and the second rib plate are suitable for abutting against the plurality of soft-pack battery cells.

[0011] In one embodiment, the box body includes a first side plate and a second side plate opposite to each other in the second direction, the first rib plate is connected to the first side plate, and the second rib plate is connected to the second side plate.

[0012] In one embodiment, the box body further includes a bottom plate, the first side plate and the second side plate are both arranged on the bottom plate, and the first rib plate and / or the second rib plate are connected to the bottom plate.

[0013] In one embodiment, the battery box also includes a third rib, which is connected and fixed to the box body, and is arranged between the first rib and the second rib. The third rib is suitable for dividing the receiving space into a plurality of sub-spaces; each of the sub-spaces is suitable for receiving at least one of the battery modules, and the third rib is suitable for abutting against the soft-pack battery cell.

[0014] In one embodiment, there are a plurality of the third ribs, and the plurality of the third ribs are arranged at intervals along the second direction.

[0015] In one embodiment, the battery box also includes a partition, which extends along the second direction, and is connected to the first rib, the second rib and the third rib. The partition and the third rib are suitable for dividing the receiving space into a plurality of sub-spaces, and the partition is suitable for abutting against the soft-pack battery cell.

[0016] In one embodiment, there are a plurality of partitions, and the plurality of partitions are spaced apart along the first direction.

[0017] In one embodiment, the battery box further includes a buffer, which is disposed on at least one of the first rib, the second rib, the third rib and the partition, and is suitable for abutting against the soft-pack battery cell.

[0018] In one embodiment, the buffer component is provided with heat dissipation holes.

[0019] In one embodiment, there are a plurality of heat dissipation holes, and the plurality of heat dissipation holes are arranged at intervals.

[0020] In one embodiment, the battery box further includes a limiting assembly, wherein the limiting assembly is connected to the bottom plate, and the limiting assembly is suitable for abutting against the plurality of soft-pack battery cells in the first direction.

[0021] In one embodiment, the limiting assembly comprises a mounting plate and at least one limiting member, the mounting plate is connected and fixed to the bottom plate, the limiting member is connected to the mounting plate, and the limiting member (32) is suitable for abutting against the soft-pack battery cell.

[0022] In one embodiment, the position of the limiting member in the first direction is adjustable.

[0023] In one embodiment, the battery box further includes a pressure plate assembly, wherein the pressure plate assembly is connected to surfaces of the first rib plate and the second rib plate facing away from the bottom plate, and / or the pressure plate assembly is connected to surfaces of the first side plate (12) and the second side plate (13) facing away from the bottom plate (11).

[0024] In one embodiment, the pressure plate assembly comprises a pressure plate and a buffer pad, and the buffer pad is arranged on the surface of the pressure plate facing the bottom plate (11).

[0025] In a second aspect, the utility model further provides an energy storage device, comprising a battery module and a battery box according to any one of the various embodiments of the first aspect, wherein the battery module is accommodated in the battery box.

[0026] In a third aspect, the utility model further provides an electrical equipment, comprising an electrical device and the energy storage device described in the second aspect, wherein the energy storage device supplies power to the electrical device.

[0027] By accommodating and fixing the first rib and the second rib in the box, a module shell is no longer required when installing multiple soft-pack battery cells. The first rib and the second rib can resist the expansion and deformation of the multiple soft-pack battery cells and can fix the multiple soft-pack battery cells. Compared with the traditional module shell locking screw method, the connection and fixing method of the first rib and the second rib to the box can set more connection positions and has a larger bearing area of ​​the matching position, which can reduce the probability of stress concentration and reduce the risk of local structural deformation fatigue failure during use and transportation. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0029] Figure 1 is a top view of an energy storage device according to an embodiment;

[0030] Figure 2 is an exploded view of an energy storage device according to an embodiment;

[0031] Figure 3 is a top view of a battery box of an embodiment;

[0032] Figure 4 The present invention is a cross-sectional view of the connection between the pressure plate assembly and the first rib plate according to an embodiment.

[0033] Description of reference numerals:

[0034] 1000-Energy storage device;

[0035] 10-box body, 11-bottom plate, 12-first side plate, 13-second side plate, 14-third side plate, 15-fourth side plate, 16-handle, 101-accommodating chamber;

[0036] 21-first rib, 22-second rib, 23-third rib, 24-partition, 25-buffer, 251-first buffer part, 252-second buffer part, 253-heat dissipation hole, 26-heat dissipation silicone grease, 27-accommodation space, 271-subspace;

[0037] 31-mounting plate, 32-limiting member;

[0038] 41-pressing plate, 42-buffer pad, 43-fastening screw;

[0039] 200-battery module, 201-ear, 202-bracket, 203-deformable part;

[0040] X-first direction, Y-second direction, Z-third direction. DETAILED DESCRIPTION

[0041] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0042] It should be noted that when a component is said to be "fixed to" another component, it can be directly on the other component or there can be a central component. When a component is said to be "connected to" another component, it can be directly connected to the other component or there can be a central component at the same time.

[0043] Unless otherwise defined, all technical and scientific terms used in this utility model have the same meaning as those commonly understood by technicians in the technical field of this utility model. The terms used in the specification of this utility model are only for the purpose of describing specific embodiments and are not intended to limit this utility model. The term "and / or" used in this utility model includes any and all combinations of one or more related listed items.

[0044] In conjunction with the accompanying drawings, some embodiments of the present invention are described in detail below. In the absence of conflict, the following embodiments and features in the embodiments can be combined with each other.

[0045] The embodiment of the utility model provides an electric device, including an electric device and an energy storage device 1000 in the embodiment of the utility model, and the energy storage device 1000 supplies power to the electric device. The electric device can be a household appliance load, a vehicle, an industrial power load, a commercial power load, a social infrastructure such as a base station, etc., without limitation.

[0046] refer to Figure 1 and Figure 2 The embodiment of the utility model further provides an energy storage device 1000, comprising a battery module 200 and a battery box in any embodiment of the utility model, wherein the battery module 200 is accommodated in the battery box.

[0047] The battery box has a receiving cavity 101 , and the battery module 200 is received in the receiving cavity 101 and fixed by the battery box.

[0048] The battery module 200 includes a plurality of soft-pack cells, and there is no module shell outside the plurality of soft-pack cells. The soft-pack cells may be wound cells or stacked cells, without limitation. An insulating film, a deformable member 203, etc. may be provided outside the plurality of soft-pack cells, and the deformable member 203 may be, for example, a buffer foam. Each soft-pack cell is connected to at least two pole ears 201, at least one of which is a positive pole ear and at least one is a negative pole ear, and the pole ears 201 of the plurality of soft-pack cells are located at the same end or opposite ends in the length direction of the soft-pack cells. A bracket 202 is also provided at the end of the length direction of the plurality of soft-pack cells, and the bracket 202 is made of an insulating material. The bracket 202 is used as a supporting base and can be used to set a connecting piece, which can connect the plurality of pole ears 201 of the plurality of soft-pack cells in series or in parallel, without limitation.

[0049] The battery box of the embodiment of the utility model is described in detail below.

[0050] refer to Figure 1 and Figure 2 The battery box provided by the embodiment of the utility model includes a box body 10, a first rib plate 21 and a second rib plate 22.

[0051] The box body 10 may be roughly in the shape of a rectangular parallelepiped. A coordinate system XYZ is first established to define directions. The length direction of the box body 10 is a first direction X, the width direction of the box body 10 is a second direction Y, and the height direction of the box body 10 is a third direction Z. The first direction X, the second direction Y and the third direction Z intersect with each other. Optionally, the first direction X, the second direction Y and the third direction Z may be perpendicular to each other.

[0052] The box body 10 includes a bottom plate 11, a first side plate 12, a second side plate 13, a third side plate 14 and a fourth side plate 15, and the above-mentioned plates can be roughly flat. The first side plate 12, the second side plate 13, the third side plate 14 and the fourth side plate 15 are all arranged on the bottom plate 11. The first side plate 12 and the second side plate 13 extend along the first direction X and are opposite to each other in the second direction Y. The third side plate 14 and the fourth side plate 15 extend along the second direction Y and are opposite to each other in the first direction X. The first side plate 12, the third side plate 14, the second side plate 13 and the fourth side plate 15 are connected end to end in sequence to form a ring, so as to enclose the bottom plate 11 together to form a accommodating cavity 101.

[0053] The bottom plate 11, the first side plate 12, the second side plate 13, the third side plate 14 and the fourth side plate 15 can all be independent plates, or at least two of them can be of an integral structure, without limitation. The materials of the bottom plate 11, the first side plate 12, the second side plate 13, the third side plate 14 and the fourth side plate 15 can be materials with high structural strength such as aluminum alloy and alloy steel, without limitation.

[0054] To meet the requirements of wiring, exhaust, heat dissipation, etc., openings can be provided in one or more of the bottom plate 11, the first side plate 12, the second side plate 13, the third side plate 14 and the fourth side plate 15, and flow channels can be provided inside, without limitation.

[0055] For easy handling, the box body 10 further includes a handle 16, and the handle 16 is provided on the outer surface of at least one of the first side plate 12, the second side plate 13, the third side plate 14 and the fourth side plate 15 facing away from the accommodation cavity 101.

[0056] The first rib plate 21 is fixedly connected to the box body 10. The first rib plate 21 is received in the accommodation cavity 101, and can be directly fixedly connected to the box body 10, or can be fixedly connected to the box body 10 through other intermediate structures, without limitation. The first rib plate 21 extends along the first direction X, and the cross-sectional shape thereof can be "mouth", "L", "[", "I", etc., without limitation. The first rib plate 21 can be manufactured by processes such as stamping, and the material thereof can be high-strength materials such as aluminum alloy and alloy steel.

[0057] The second rib plate 22 is fixedly connected to the box body 10, and the first rib plate 21 and the second rib plate 22 are oppositely arranged in the second direction Y. The second rib plate 22 is received in the accommodation cavity 101, and can be directly fixedly connected to the box body 10, or can be fixedly connected to the box body 10 through other intermediate structures, without limitation. The second rib plate 22 extends along the first direction X, and the cross-sectional shape thereof can be "mouth", "L", "[", "I", etc., without limitation. The second rib plate 22 can be manufactured by processes such as stamping, and the material thereof can be high-strength materials such as aluminum alloy and alloy steel.

[0058] The structure of the second rib plate 22 can be the same as that of the first rib plate 21, and they can be interchanged during installation to improve versatility. After installation, the first rib plate 21 and the second rib plate 22 can be symmetrical to each other. For example, the whole of the first rib plate 21 and the second rib plate 22 after installation can be approximately in the shape of "][", and the opposite surfaces of the first rib plate 21 and the second rib plate 22 can both approximately form a plane so as to abut against the soft-pack battery cells without scratching the soft-pack battery cells.

[0059] A receiving space 27 is formed between the first rib plate 21 and the second rib plate 22. The receiving space 27 is suitable for receiving the battery module 200. The battery module 200 includes a plurality of soft-pack battery cells, and the plurality of soft-pack battery cells are arranged in sequence along the second direction Y. The first rib plate 21 and the second rib plate 22 are suitable for abutting against the plurality of soft-pack battery cells.

[0060] Among them, the length direction of the soft-pack battery cell is the first direction X, the thickness direction is the second direction Y, and the height direction is the third direction Z. Multiple soft-pack battery cells are arranged in sequence in their own thickness direction and abut against each other. The soft-pack battery cells generate heat during operation, which will cause expansion and deformation in their own thickness direction.

[0061] Currently, conventional energy storage products are provided with a sturdy module shell on the periphery of multiple soft-pack battery cells to resist the expansion and deformation of the multiple soft-pack battery cells. However, this method requires the battery module 200 with the module shell to be installed in the battery pack shell. The module shell needs to be fixed to the battery pack shell by locking screws. The bearing area of ​​the screws, the module shell and the battery pack shell is small, which is prone to stress concentration. There is a risk of local structural deformation fatigue failure during use and transportation.

[0062] Different from the conventional scheme, in the scheme of the embodiment of the utility model, by accommodating and fixing the first rib 21 and the second rib 22 in the box body 10, a module shell is no longer needed when installing multiple soft-pack battery cells. The first rib 21 and the second rib 22 can resist the expansion and deformation of the multiple soft-pack battery cells and can fix the multiple soft-pack battery cells. The connection and fixing method of the first rib 21 and the second rib 22 to the box body 10, compared with the traditional module shell locking screw method, can set more connection positions and have a larger bearing area of ​​the matching position, which can reduce the probability of stress concentration and reduce the risk of local structural deformation fatigue failure during use and transportation.

[0063] During specific installation, a suitable clamp or other structure may be used to pre-clamp multiple soft-pack cells and push the multiple soft-pack cells into the receiving space 27 . After the clamp is removed, the multiple soft-pack cells expand to abut against the first rib 21 and the second rib 22 .

[0064] The reason why the first rib plate 21 and the second rib plate 22 are provided instead of using the side plate of the box 10 itself to resist the expansion and deformation of multiple soft-pack batteries is that the expansion and deformation force of multiple soft-pack batteries is large, and the structural strength requirements of the box 10 are high, which leads to the need for a more complex structure and a larger thickness of the side plate of the box 10. However, the thickness of the current side plate of the box 10 is not enough to resist such a large expansion and deformation force, and a thicker side plate is required. For example, it is difficult to obtain such a side plate when the side plate is made by a stamping process, and the processing difficulty increases. By adopting the method of providing a rib plate in the accommodating cavity 101, the current conventional side plate can be used, without the need for a complex structure and a large thickness, and the rib plate is used to resist the expansion and deformation of multiple batteries, reducing the process difficulty and reducing the production cost.

[0065] Optional, reference Figure 1 and Figure 2The first rib plate 21 is connected to the first side plate 12 , and the second rib plate 22 is connected to the second side plate 13 .

[0066] The connection method between the first rib plate 21 and the first side plate 12 can be any feasible method such as screw connection, welding, clamping, bonding, etc., without limitation. The first side plate 12 provides a support base for the first rib plate 21, and can provide a stable support for the first rib plate 21 when the first rib plate 21 is subjected to the expansion and deformation of multiple soft-pack battery cells, thereby ensuring structural stability.

[0067] The second rib plate 22 and the second side plate 13 can be connected by any feasible method such as screw connection, welding, clamping, bonding, etc., without limitation. The second side plate 13 provides a support base for the second rib plate 22, and can provide a stable support for the second rib plate 22 when the second rib plate 22 is subjected to the expansion and deformation of multiple soft-pack battery cells, thereby ensuring structural stability.

[0068] Optional, reference Figure 1 and Figure 2 , the first rib plate 21 and / or the second rib plate 22 are connected to the bottom plate 11. Among them, only one of the first rib plate 21 and the second rib plate 22 can be connected to the bottom plate 11, or both can be connected to the bottom plate 11.

[0069] The connection method between the first rib plate 21 and the bottom plate 11 can be any feasible method such as screw connection, welding, clamping, bonding, etc., without limitation. When the first rib plate 21 is connected to the bottom plate 11 and the first side plate 12 at the same time, the bottom plate 11 and the first side plate 12 provide a stable support for the first rib plate 21, which is conducive to improving the ability of the first rib plate 21 to resist the expansion and deformation of multiple battery cells.

[0070] The second rib plate 22 can be connected to the bottom plate 11 by any feasible method such as screw connection, welding, clamping, bonding, etc., without limitation. When the second rib plate 22 is connected to the bottom plate 11 and the second side plate 13 at the same time, the bottom plate 11 and the second side plate 13 provide a stable support for the second rib plate 22, which is conducive to improving the ability of the second rib plate 22 to resist the expansion and deformation of multiple battery cells.

[0071] In one embodiment, reference Figure 1 and Figure 2 The battery box also includes a third rib 23, which is connected and fixed to the box body 10. The third rib 23 is arranged between the first rib 21 and the second rib 22, and the third rib 23 is suitable for dividing the receiving space 27 into a plurality of sub-spaces 271. Each sub-space 271 is suitable for receiving at least one battery module 200, and the soft-pack battery cell is also suitable for abutting against the third rib 23.

[0072] The third rib plate 23 is received in the accommodating cavity 101, and can be directly connected and fixed to the box body 10, or connected and fixed to the box body 10 through other intermediate structures, without limitation. Optionally, the third rib plate 23 is connected and fixed to the bottom plate 11, and the connection method can be any feasible method such as screw connection, welding, clamping, bonding, etc., without limitation.

[0073] The third rib 23 extends along the first direction X, and its cross-sectional shape can be a "mouth", "I" shape, etc., and its two opposite surfaces in the second direction Y are substantially flat, so that the soft-pack battery cell can be abutted without scratching the soft-pack battery cell. The third rib 23 can be made by stamping and other processes, and its material can be high-strength materials such as aluminum alloy and alloy steel.

[0074] The third rib 23 divides the receiving space 27 into a plurality of identical subspaces 271, each of which can receive one or more battery modules 200. Each battery module 200 includes a plurality of soft-packed cells. The plurality of soft-packed cells in each subspace 271 abut against the third rib 23.

[0075] Optionally, the lengths of the first rib 21, the second rib 22, and the third rib 23 are equal and correspond to the lengths of the plurality of soft-packed cells, so that the ends of the plurality of soft-packed cells are roughly flush with the ends of the first rib 21, the second rib 22, and the third rib 23. In this way, no extra space is occupied, and the space of the accommodating cavity 101 can be maximized.

[0076] Optionally, there are multiple third ribs 23, and the multiple third ribs 23 are arranged at intervals along the second direction Y. The multiple third ribs 23 divide the receiving space 27 into multiple identical subspaces 271, and some subspaces 271 are formed by two adjacent third ribs 23. One of the two outermost subspaces 271 is formed by the first rib 21 and the third rib 23, and the other is formed by the second rib 22 and the third rib 23. By providing multiple third ribs 23, the receiving space 27 can be divided into multiple subspaces 271, and the number of soft-pack batteries accommodated in each subspace 271 is reasonable, ensuring that the soft-pack batteries are in a suitable working environment.

[0077] In one embodiment, reference Figure 1 and Figure 2 The battery box also includes a partition 24, which extends along the second direction Y. The partition 24 is connected to the first rib 21, the second rib 22 and the third rib 23. The partition 24 and the third rib 23 are suitable for dividing the accommodating space 27 into multiple sub-spaces 271, and the soft-pack battery cell is also suitable for abutting against the partition 24.

[0078] Among them, the bracket 202 at one end of the length direction of the multiple soft-packed cells abuts against the partition 24, so as to limit and fix the length direction of the multiple soft-packed cells. The partition 24 can be made of a high-strength material such as aluminum alloy and alloy steel. Since the expansion deformation of the soft-packed cells in the length direction (i.e., the first direction X) is small, the partition 24 can be roughly in the shape of a thin plate to reduce the space occupied in the first direction X.

[0079] The connection method of the partition 24 with the first rib 21, the second rib 22 and the third rib 23 can be any feasible method such as screw connection, welding, clamping, bonding, etc., without limitation. Optionally, the first rib 21 and the second rib 22 have grooves on their opposing surfaces, and the third rib 23 has a through groove. The partition 24 is received in the grooves of the first rib 21 and the second rib 22 and the through groove of the third rib 23, and the partition 24 is connected and fixed to the first rib 21, the second rib 22 and the third rib 23 by clamping.

[0080] The partition 24 can also be connected and fixed to the bottom plate 11, and the connection method can be any feasible method such as screw connection, welding, clamping, bonding, etc., without limitation. Connecting and fixing to the bottom plate 11 can enhance the stability of the partition 24 and improve the limiting and fixing effect of the soft-pack battery cell.

[0081] Optionally, a plurality of partitions 24 are arranged at intervals along the first direction X. A plurality of partitions 24 are provided to separate more subspaces 271 , so that more battery modules 200 can be arranged.

[0082] In a specific embodiment, reference Figure 1 and Figure 2 There is one third rib 23 and one partition 24 , which can divide the receiving space 27 into four sub-spaces 271 , each sub-space 271 receiving one battery module 200 , so that one battery box can receive four battery modules 200 .

[0083] In one embodiment, reference Figure 2 and Figure 3 The battery box further includes a buffer 25, which is disposed on at least one of the first rib 21, the second rib 22, the third rib 23 and the partition 24, and the buffer 25 is suitable for abutting against the soft-pack battery cell.

[0084] The buffer member 25 may be specifically a buffer foam, which may be attached to the first rib 21, the second rib 22, the third rib 23 and the partition 24 at positions suitable for contacting with the soft-pack battery cells, or may be attached to the entire area without limitation.

[0085] Optionally, the buffer member 25 may also be attached to the bottom plate 11 .

[0086] In a specific embodiment, Figure 2 and Figure 3 As shown, the buffer 25 includes an integrally formed first buffer portion 251 and a second buffer portion 252, the first buffer portion 251 is attached to the partition 24, and the second buffer portion 252 is attached to the bottom plate 11. The middle of the second buffer portion 252 is hollowed out to expose the bottom plate 11, and a heat dissipation silicone grease 26 is provided at the hollowed-out position of the second buffer portion 252, so that the heat of the soft-pack battery cell is transferred to the bottom plate 11 through the heat dissipation silicone grease 26 for heat dissipation.

[0087] Optionally, the buffer member 25 is provided with a heat dissipation hole 253. Figure 2 For example, the buffer 25 (i.e., the first buffer portion 251) on the partition 24 shown is provided with a heat dissipation hole 253. The heat dissipation hole 253 can be a circular hole or any other feasible shape. The heat dissipation hole 253 penetrates the buffer 25 so that the partition 24 is exposed through the heat dissipation hole 253. Then, the heat of the soft-pack battery cell can also be transferred to the partition 24 through the heat dissipation hole 253, and then dissipated through the partition 24 and the structure of the battery box connected to the partition 24. Optionally, there are multiple heat dissipation holes 253, and the multiple heat dissipation holes 253 can be arranged at intervals, and further can be evenly arranged, so as to evenly dissipate the heat at each position.

[0088] In one embodiment, reference Figures 1 to 3 The battery box also includes a limiting component, which is connected to the bottom plate 11 and is suitable for abutting against multiple soft-pack batteries in the first direction X. In the embodiment with a partition 24, one end of the multiple soft-pack batteries in the length direction (i.e., the first direction X) abuts against the partition 24, and the other end abuts against the limiting component, thereby achieving the limitation and fixation of the length direction of the multiple soft-pack batteries. The specific structure of the limiting component is not limited, and the connection method between the limiting component and the bottom plate 11 can be any feasible method such as screw connection, welding, clamping, bonding, etc., without limitation.

[0089] Optional, reference Figure 2 and Figure 3 The limiting assembly includes a mounting plate 31 and at least one limiting member 32. The mounting plate 31 is fixedly connected to the bottom plate 11. The limiting member 32 is connected to the mounting plate 31. The limiting member 32 is suitable for contacting the soft-pack battery cell. Optionally, the position of the limiting member 32 in the first direction X is adjustable.

[0090] The mounting plate 31 extends along the second direction Y, and its structure is not limited. The mounting plate 31 and the bottom plate 11 can be connected by any feasible method such as screw connection, welding, clamping, bonding, etc., without limitation. The mounting plate 31 can be provided with a mounting hole or the like, and the stopper 32 can be fixed by matching and connecting with the mounting hole or the like on the mounting plate 31.

[0091] The limiting member 32 may be roughly plate-shaped, and its cross-sectional shape along the second direction Y may be "L", "T", "[", etc., without limitation. The limiting member 32 may also be provided with structures such as reinforcing ribs to enhance the structural strength. The position of the limiting member 32 in the first direction X is adjustable, which can be achieved by providing waist-shaped holes, slide grooves and other structures extending along the first direction X on the mounting plate 31 and / or the limiting member 32, so that the position of the limiting member 32 connected and fixed to the mounting plate 31 can be adjusted in the first direction X. In this way, by adjusting the position of the limiting member 32 in the first direction X, the supporting pressure of the limiting member 32 on the length direction of the multiple soft-pack battery cells can be maintained, thereby ensuring the limiting and fixing effect of the multiple soft-pack battery cells in the first direction X.

[0092] One mounting plate 31 may correspond to one or more battery modules 200, and one battery module 200 may correspond to one or more stoppers 32. Figures 1 to 3 As shown, one mounting plate 31 corresponds to two battery modules 200 , and one battery module 200 corresponds to one limiting member 32 .

[0093] In one embodiment, reference Figure 1 and Figure 2 The battery box also includes a pressing plate assembly, which is connected to the surfaces of the first rib 21 and the second rib 22 facing away from the bottom plate 11, and / or the pressing plate assembly is connected to the surfaces of the first side plate 12 and the second side plate 13 facing away from the bottom plate 11.

[0094] The pressure plate assembly is opposite to the bottom plate 11 in the third direction Z, and the connection between the pressure plate assembly and the first rib 21 and the second rib 22, or the first side plate 12 and the second side plate 13 can be any feasible method such as screw connection, welding, clamping, bonding, etc., without limitation. Optionally, the pressure plate assembly can also be connected to the third rib 23. The pressure plate assembly is provided to limit and fix multiple soft-pack batteries in the width direction (i.e., the third direction Z, i.e., the height direction of the box 10). Combined with the aforementioned structure for limiting and fixing multiple soft-pack batteries in the first direction X and the second direction Y, it is possible to limit and fix multiple soft-pack boxes 10 in various directions, thereby fixing multiple soft-pack batteries in the box 10.

[0095] Optional, reference Figure 1 and Figure 4 The pressing plate assembly includes a pressing plate 41 and a buffer pad 42 . The buffer pad 42 is arranged on the surface of the pressing plate 41 facing the bottom plate 11 .

[0096] The pressing plate 41 may be a substantially flat plate extending along the second direction Y, and the two side edges in the first direction X may be flanged to enhance the structural strength. The buffer pad 42 may be a buffer foam pad placed under the pressing plate 41. For example, Figure 4As shown, a buffer pad 42 is provided between the first rib 21 and the pressing plate 41, and the connection and fixation are achieved by fastening screws 43 which are sequentially penetrated through the pressing plate 41, the buffer pad 42, and the first rib 21. The buffer pad 42 can be elastically deformed so that the pressing plate 41 and the first rib 21 are firmly connected and not easy to loosen.

[0097] It is understandable that a buffer pad 42 may be provided between the second rib 22 and the pressing plate 41, and between the third rib 23 and the pressing plate 41. Optionally, a buffer pad 42 may also be provided between the pressing plate 41 and the soft-pack battery cell to absorb vibration and avoid damage to the soft-pack battery cell.

[0098] In the description of the embodiments of the present invention, it should be noted that the orientation or positional relationship of terms such as "center", "up", "down", "left", "right", "vertical", "horizontal", "inside" and "outside" are based on the orientation or positional relationship described 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 referred device or element 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.

[0099] The above disclosure is only a preferred embodiment of the present invention, and certainly cannot be used to limit the scope of rights of the present invention. Ordinary technicians in this field can understand that all or part of the processes of the above embodiment and equivalent changes made according to the claims of the present invention still fall within the scope covered by the present invention.

Claims

1. A battery box, characterized in that: include: The box body (10) has a containing cavity (101); A first rib (21), received in the accommodating cavity (101), connected and fixed to the box body (10) and extending along a first direction (X); a second rib plate (22), received in the accommodating cavity (101), connected and fixed to the box body (10) and extending along the first direction (X); the second rib plate (22) and the first rib plate (21) are arranged opposite to each other in a second direction (Y) and a receiving space (27) is formed therebetween; and the second direction (Y) intersects with the first direction (X); The receiving space (27) is suitable for receiving a battery module (200), wherein the battery module (200) comprises a plurality of soft-pack battery cells, wherein the plurality of soft-pack battery cells are arranged in sequence along the second direction (Y), and the first rib plate (21) and the second rib plate (22) are suitable for abutting against the plurality of soft-pack battery cells.

2. The battery box according to claim 1, characterized in that: The box body (10) comprises a first side plate (12) and a second side plate (13) which are opposite to each other in the second direction (Y), the first rib plate (21) is connected to the first side plate (12), and the second rib plate (22) is connected to the second side plate (13).

3. The battery box according to claim 2, characterized in that: The box body (10) further comprises a bottom plate (11), the first side plate (12) and the second side plate (13) are both arranged on the bottom plate (11), and the first rib plate (21) and / or the second rib plate (22) are connected to the bottom plate (11).

4. The battery box according to claim 1, characterized in that: The battery box further comprises a third rib plate (23), the third rib plate (23) being connected and fixed to the box body (10), the third rib plate (23) being arranged between the first rib plate (21) and the second rib plate (22), the third rib plate (23) being suitable for dividing the receiving space (27) into a plurality of subspaces (271); each of the subspaces (271) being suitable for receiving at least one of the battery modules (200), and the third rib plate (23) being suitable for abutting against the soft-pack battery cell.

5. The battery box according to claim 4, characterized in that: There are a plurality of third ribs (23), and the plurality of third ribs (23) are arranged at intervals along the second direction (Y).

6. The battery box according to claim 4, characterized in that: The battery box also includes a partition (24), the partition (24) extends along the second direction (Y), the partition (24) is connected to the first rib (21), the second rib (22) and the third rib (23), the partition (24) and the third rib (23) are suitable for dividing the receiving space (27) into a plurality of subspaces (271), and the partition (24) is suitable for abutting against the soft-pack battery cell.

7. The battery box according to claim 6, characterized in that: There are a plurality of partitions (24), and the plurality of partitions (24) are arranged at intervals along a first direction (X).

8. The battery box according to claim 6, characterized in that: The battery box further comprises a buffer (25), wherein the buffer (25) is arranged on at least one of the first rib (21), the second rib (22), the third rib (23) and the partition (24), and the buffer (25) is suitable for abutting against the soft-pack battery cell.

9. The battery box according to claim 8, characterized in that: The buffer member (25) is provided with a heat dissipation hole (253).

10. The battery box according to claim 9, characterized in that: There are a plurality of heat dissipation holes, and the plurality of heat dissipation holes are arranged at intervals.

11. The battery box according to claim 3, characterized in that: The battery box further comprises a limiting assembly, the limiting assembly being connected to the bottom plate (11), and the limiting assembly being suitable for abutting against the plurality of soft-pack battery cells in the first direction (X).

12. The battery box according to claim 11, characterized in that: The limiting assembly comprises a mounting plate (31) and at least one limiting member (32); the mounting plate (31) is connected and fixed to the bottom plate (11); the limiting member (32) is connected to the mounting plate (31); and the limiting member (32) is suitable for abutting against the soft-pack battery cell.

13. The battery box according to claim 12, characterized in that: The position of the limiting member (32) in the first direction (X) is adjustable.

14. The battery box according to claim 3, characterized in that: The battery box also includes a pressure plate assembly, which is connected to the surfaces of the first rib (21) and the second rib (22) facing away from the bottom plate (11), and / or the pressure plate assembly is connected to the surfaces of the first side plate (12) and the second side plate (13) facing away from the bottom plate (11).

15. The battery box according to claim 14, characterized in that: The pressing plate assembly comprises a pressing plate (41) and a buffer pad (42); the buffer pad (42) is arranged on the surface of the pressing plate (41) facing the bottom plate (11).

16. An energy storage device (1000), characterized in that: It comprises a battery module (200) and a battery box according to any one of claims 1 to 15, wherein the battery module (200) is accommodated in the battery box.

17. An electrical equipment, characterized in that: It comprises an electric device and an energy storage device (1000) as claimed in claim 16, wherein the energy storage device (1000) supplies power to the electric device.

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