CN219873981U - Energy storage device - Google Patents

Abstract

The embodiment of the utility model relates to the field of electric vehicles and discloses energy storage equipment. The energy storage device includes: a housing case and a battery module. The battery module is arranged in the first accommodating cavity; the battery module comprises a battery pack and a separator; the battery pack comprises a plurality of batteries, and the batteries are adjacently fixed into a whole; the separator includes a base; the base body is provided with a groove-shaped hole and an insulating plate extending along the groove-shaped hole; the insulating plate is used for separating and forming an electrode area, and a groove-shaped hole is formed in the electrode area; the batteries are provided with electrode lugs which penetrate through the groove-shaped holes, and two adjacent batteries which are electrically connected are connected in the electrode area through the electrode lugs. The beneficial effects are as follows: two adjacent and electrically connected batteries can be connected in the electrode area by electrode lugs, the electrode lugs in different electrode areas are not mutually interfered, the electric contact between the two batteries in the same electrode area is ensured, the short circuit of a circuit caused by the displacement and the false overlapping of the electrode lugs is prevented, and the use safety is improved.

Description

Energy storage device

Technical Field

The utility model relates to the technical field of electric vehicles, in particular to energy storage equipment.

Background

The energy storage product is used for example in the energy storage equipment of small-size electric motor car such as electric motorcycle car, because the lug protrusion design that is used for establishing electric contact, the interval between the lug need be considered in the equipment process to the energy storage product, the interval between the lug is decided by the thickness of electric core (the energy storage unit of energy storage product), and the volume size of energy storage product has been decided to the thickness of electric core, so the interval between the two lugs that need not establish electric connection is difficult to pull open to enough safe distance in current energy storage product when assembling the energy storage product, lead to receiving the vibrations lug slightly easily to take place the aversion, the mistake is taken up in the use, thereby cause the short circuit, the security performance is relatively poor.

Disclosure of Invention

Based on the above, the utility model provides the energy storage device, which can achieve the effect of separating the lugs and avoid potential safety hazards.

In order to solve the technical problems, the technical scheme adopted by the embodiment of the utility model is as follows:

an energy storage device, comprising: the accommodating box is internally provided with a first accommodating cavity; the battery module is accommodated in the first accommodating cavity; the battery module includes a battery pack and a separator; the battery pack comprises a plurality of batteries, and the batteries are adjacently fixed into a whole; the separator includes a base; the base body is provided with a groove-shaped hole and an insulating plate extending along the groove-shaped hole; the insulating plate is used for separating and forming an electrode area, and the groove-shaped holes are formed in the electrode area; the batteries are provided with electrode lugs, the electrode lugs penetrate through the groove-shaped holes, and two adjacent and electrically connected batteries are connected with each other at the electrode area through the electrode lugs.

In some embodiments, the base is further provided with a plurality of separator plates disposed away from the insulating plate; the plurality of separation plates are mutually parallel to form an assembly groove between two adjacent separation plates, and the assembly groove is used for positioning and assembling the battery; the groove bottom of the assembly groove is provided with the groove-shaped hole for the electrode lug of the battery to pass through.

In some embodiments, a guiding structure is arranged in the assembly groove, the guiding structure comprises a first flange and a second flange, the first flange is arranged on one of the separation plates, the second flange is arranged on the other separation plate, and the first flange and the second flange are opposite; the first flange is provided with a first inclined plane, the second flange is provided with a second inclined plane, and a preset included angle is formed between the first inclined plane and the second inclined plane.

In some embodiments, the battery module further includes an information collection plate fixed to the separator, and electrically connected to the battery pack.

In some embodiments, the battery module further comprises a battery management system; the battery management system is fixed on the information acquisition board and is electrically connected with the information acquisition board.

In some embodiments, the battery module further comprises a bracket assembly comprising a bracket with an opening at the top end and a second receiving cavity therein, and a cushion pad provided on a portion of the inner surface of the bracket; the battery pack is accommodated in the second accommodating cavity, and the buffer pad is clamped between the outer surface of the battery pack and the inner surface of the bracket.

In some embodiments, the divider covers the top opening of the bracket and is connected to the top of the bracket; the bottom of the bracket is provided with a through hole which is communicated with the second accommodating cavity; the top of the bracket and the bottom of the bracket are two separated ends of the bracket.

In some embodiments, the battery module further includes a conductive member with which electrode tabs of two of the batteries are electrically connected within the electrode region.

In some embodiments, the separator further comprises a contoured edge, a surface of the contoured edge protruding with a perimeter, the contoured edge extending along an edge of the substrate; the battery module is assembled in the accommodating box, and an accommodating groove is formed between the profiling edge and the accommodating box; the first accommodating cavity is filled with sealing medium, one part of the sealing medium is filled at the bottom of the accommodating box, and the other part of the sealing medium is filled in the accommodating groove.

In some embodiments, the accommodating box comprises a box body and a box cover, the first accommodating cavity is arranged in the box body, and the box cover is covered on the box body; the cover body is provided with a connector and an air vent, the connector is electrically connected with the battery module, and the air vent is communicated with the first accommodating cavity and the external environment.

Unlike traditional energy storage products, the energy storage device provided by the embodiment of the utility model has the beneficial effects that: the insulating plate is arranged on the surface of the substrate to separate and form the electrode area, two adjacent and electrically connected batteries are connected in the electrode area through the electrode lugs, the electrode lugs in different electrode areas are not interfered with each other, the electric contact between the two batteries in the same electrode area is ensured, the short circuit of a circuit caused by the displacement of the electrode lugs and the error lap is prevented, and the safety of the battery module is improved.

Drawings

One or more embodiments are illustrated by way of example and not limitation in the figures of the accompanying drawings, in which like references indicate similar elements, and in which the figures of the drawings are not to scale, unless expressly stated otherwise.

FIG. 1 is an exploded schematic view of an energy storage device provided by an embodiment of the present utility model;

fig. 2 is a schematic structural diagram of an energy storage device according to an embodiment of the present utility model;

FIG. 3 is a schematic cross-sectional view taken at the location of section A-A in FIG. 2;

FIG. 4 is an exploded view of a containment box provided in an embodiment of the present utility model;

fig. 5 is a schematic structural view of a battery module according to an embodiment of the present utility model;

fig. 6 is an exploded view of a battery module according to an embodiment of the present utility model;

fig. 7 is an exploded view of a battery pack according to an embodiment of the present utility model;

fig. 8 is a schematic structural view of a separator provided in an embodiment of the present utility model, showing a structural condition in one direction;

FIG. 9 is a schematic cross-sectional view taken at the B-B cut location in FIG. 8;

fig. 10 is a schematic structural view of a separator according to an embodiment of the present utility model, showing a structural condition in another direction;

fig. 11 is an enlarged view of the V part in fig. 5;

FIG. 12 is a schematic structural diagram of an information acquisition board according to an embodiment of the present utility model;

fig. 13 is a schematic structural view of a bracket assembly according to an embodiment of the present utility model.

Reference numerals illustrate:

1. an energy storage device; 10. a housing box; r10, a first accommodating cavity; 11. a case cover; 111. a connector; 112. ventilation holes; 113. a rubber plug; 114. a handle; 12. a case; 121. a surrounding wall; 122. a base; 1221. sealing grooves; 1222. a seal ring; 123. a convex strip; 124. a boss; 20. a battery module; 21. a battery pack; 21a, a battery; 211. an electrode ear; 22. a partition; 22a, a substrate; 221. a slot-shaped hole; 222. an insulating plate; d1, an electrode area; 223. a partition plate; c1, an assembly groove; 224. a first flange; s1, a first inclined plane; 225. a second flange; s2, a second inclined plane; 226. profiling edges; 227. a clamping structure; 228. positioning columns; 23. an information acquisition board; c3, a position-avoiding slot hole; 231. positioning holes; 234. a connecting column; 235. an electrode terminal; 236. a communication terminal; 24. a conductive element; 25. a bracket assembly; r20, a second accommodating cavity; 25a, a bracket; 25b, cushioning pad; 251. a first frame body; 2511. a first coaming; 2512. a second coaming; 252. a second frame body; 2521. a third coaming; 2522. a fourth coaming; 2523. a fifth coaming; 253. a strap; 254. a connecting lug; k20, through hole.

Detailed Description

Embodiments of the technical scheme of the present utility model will be described in detail below with reference to the accompanying drawings. The following examples are only for more clearly illustrating the technical aspects of the present utility model, and thus are merely examples, and are not intended to limit the scope of the present utility model.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this utility model belongs; the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the utility model; the terms "comprising" and "having" and any variations thereof in the description of the utility model and the claims and the description of the drawings above are intended to cover a non-exclusive inclusion.

Unless specifically stated and limited otherwise, the terms "center," "longitudinal," "transverse," "upper," "lower," "vertical," "horizontal," "inner," "outer," and the like as used herein refer to an orientation or positional relationship based on that shown in the drawings, merely to facilitate description of the utility model and simplify description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus are not to be construed as limiting the utility model. The terms "mounted," "connected," "secured," and the like are to be construed broadly and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium.

Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated; thus, a feature defining "a first", "a second" may include one or more such features, either explicitly or implicitly; the meaning of "plurality" is two or more; "and/or" includes any and all combinations of one or more of the associated listed items. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment may be included in at least one embodiment of the utility model. The appearances of such phrases in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. Those of skill in the art will explicitly and implicitly appreciate that the embodiments described herein may be combined with other embodiments.

In the description of the embodiments of the present utility model, the term "and/or" is merely an association relationship describing an association object, and indicates that three relationships may exist, for example, a and/or B may indicate: a exists alone, A and B exist together, and B exists alone. In addition, the character "/" herein generally indicates that the front and rear associated objects are an "or" relationship.

In the description of the embodiments of the present utility model, the term "plurality" means two or more (including two), and similarly, "plural sets" means two or more (including two), and "plural sheets" means two or more (including two).

In the description of the embodiments of the present utility model, the orientation or positional relationship indicated by the technical terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. are based on the orientation or positional relationship shown in the drawings, and are merely for convenience of description and simplification of the description, and do not indicate or imply that the apparatus or element referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the embodiments of the present utility model.

In the description of the embodiments of the present utility model, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured" and the like should be construed broadly and may be, for example, fixedly connected, detachably connected, or integrally formed; or may be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the embodiments of the present utility model will be understood by those of ordinary skill in the art according to specific circumstances.

As shown in fig. 1 to 3, which respectively show an explosion schematic view, an assembly schematic view and a cross-sectional schematic view of an energy storage device 1, the energy storage device 1 provided by the present utility model includes: the battery pack comprises a housing case 10 and a battery module 20, wherein a first housing cavity R10 is formed in the housing case 10, and the battery module 20 is housed in the first housing cavity R10.

As shown in fig. 6, an exploded view of the battery module 20 is shown. The battery module 20 includes a battery pack 21 and a separator 22.

As shown in fig. 7, the battery pack 21 includes a plurality of batteries 21a, and the plurality of batteries 21a are adjacently fixed as one body; as shown in fig. 8, the separator 22 includes a base 22a, the base 22a being provided with a slot-shaped hole 221 and an insulating plate 222 extending along the slot-shaped hole 221; as shown in fig. 9, the insulating plate 222 is used to form an electrode area D1 on the surface of the substrate 22a in a spaced manner, and the slot-shaped holes 221 are formed in the electrode area D1.

As shown in fig. 7, the cells 21a are provided with electrode tabs 211, the electrode tabs 211 pass through the slot-shaped holes 221, and two adjacent and electrically connected cells 21a are connected by the electrode tabs 211 in the electrode region D1.

The spacer 22 may be formed of a plastic material or other suitable insulating material. According to the utility model, the insulating plate 222 is arranged on the surface of the substrate 22a for separating and forming the electrode zone D1, two adjacent and electrically connected batteries 21a are connected in the electrode zone D1 through the electrode lugs 211, the electrode lugs 211 in different electrode zones D1 are not interfered with each other, the electric contact between the two batteries 21a in the same electrode zone D1 is ensured, the circuit short circuit caused by the displacement of the electrode lugs 211 and the error lapping is prevented, and the safety of the battery module 20 is improved.

Referring to fig. 1, an exploded view of a containment tank 10 is shown. The accommodating box 10 comprises a box cover 11 and a box body 12, the first accommodating cavity R10 is arranged in the box body 12, and the box cover 11 is covered on the box body 12. As shown in fig. 4, the case cover 11 is provided with a connector 111 and an air vent 112, wherein the connector 111 is electrically connected with the battery module 20, an openable rubber stopper 113 is plugged at the air vent 112, and the air vent 112 is used for communicating the first receiving chamber R10 with the external environment to release the pressure accumulated in the case 12.

Further, the cover 11 is further provided with a handle 114, and the handle 114 is fixed to a surface of the cover 11, which is a surface of the cover 11 facing away from the first accommodating chamber R10 in the closed state. By providing the handle 114 on the case cover 11, it is advantageous for a user to take, disassemble and assemble the energy storage device 1 when in use.

The case 12 may include a wall 121 and a base 122, the wall 121 being a member with two open ends and hollow inside surrounded by a plurality of surrounding plates, wherein one end is a top end, the corresponding opening is a top end opening, and correspondingly the other end is a bottom end, the corresponding opening is a bottom end opening, the case cover 11 is covered on the top end opening of the wall 121, and the base 122 is adapted to the bottom end opening and covers the bottom end opening.

In some embodiments, the sealing connection between the case cover 11 and the top opening of the surrounding wall 121 and between the base 122 and the bottom opening of the surrounding wall 121 may be used to improve the sealing performance of the inner space of the accommodating case 10, and prevent the external liquid from penetrating to damage the battery module 20 accommodated in the accommodating case 10.

The present utility model is schematically described by taking as an example a sealing structure provided between the base 122 and the bottom end opening of the surrounding wall 121. Specifically, a sealing groove 1221 may be formed in a portion of the base 122 for matching with the end surface of the wall 121, and a sealing ring 1222 may be assembled in the sealing groove 1221, and in actual assembly, the bottom end of the wall 121 is assembled in the sealing groove 1221 of the base 122, and the sealing ring 1222 is elastically deformed by abutting, so as to achieve a good sealing effect. It will be appreciated that the sealing structure between the cover 11 and the top opening of the wall 121 may be implemented as described above, and the present utility model will not be repeated for the sake of brevity.

In some embodiments, in order to improve the smoothness of the assembly of the battery module 20 within the first receiving chamber R10, the inner surface of the case 12 may be provided with a protrusion structure. Specifically, the protruding structure includes a protrusion 123 extending from the top opening to the bottom opening on the inner surface of the surrounding wall 121, and/or a boss 124 protruding toward the first receiving cavity R10 on the inner surface of the base 122. After the battery module 20 is assembled in the first accommodating cavity R10, the bottom end of the battery module 20 abuts against the boss 124, and the side wall of the battery module 20 abuts against the protruding strip 123, that is, the battery module 20 is located in the space area defined by the boss 124 and/or the boss 124 in the first accommodating cavity R10, so that the movement and shaking of the battery module 20 in the accommodating box 10 are reduced.

As shown in fig. 5 and 6, a structural schematic view and an explosion schematic view of the battery module 20 are shown, respectively. The battery module 20 includes a battery pack 21 and a separator 22.

As shown in fig. 7, a schematic diagram of a battery pack is shown, the battery pack 21 includes a plurality of batteries 21a, the batteries 21a are provided with electrode tabs 211, the electrode tabs 211 are divided into positive electrode tabs and negative electrode tabs, and the plurality of batteries 21a can be adjacently fixed together by using double-sided adhesive tape.

As shown in fig. 8 and 9, which respectively show a schematic structural view and a schematic sectional view of the separator 22, the separator 22 includes a base 22a, the base 22a is provided with a slot-shaped hole 221 and an insulating plate 222 extending along the slot-shaped hole 221, the insulating plate 222 is provided on a surface of the base 22a for partitioning the electrode region D1, and the slot-shaped hole 221 is provided in the electrode region D1 and penetrates the base 22a.

In the actual assembly, the electrode tab 211 passes through the slot-shaped hole 221, and the two adjacent and electrically connected batteries 21a are connected in the electrode region D1 with the electrode tab 211.

Referring to fig. 9 and 10, in some embodiments, the base 22a is further provided with a plurality of separation plates 223, the separation plates 223 are disposed away from the insulating plate 222, the plurality of separation plates 223 are parallel to each other to form an assembly groove C1 between two adjacent separation plates 223, the assembly groove C1 is used for positioning and assembling one end of the battery 21a provided with the electrode tab 211, and the slot-shaped hole 221 is disposed at the bottom of the assembly groove C1 to pass through the electrode tab 211 of the battery 21 a.

As shown in fig. 11, in some embodiments, the battery module 20 further includes a conductive member 24, and the electrode tabs 211 of the two batteries 21a in the electrode region D1 are electrically connected with the conductive member 24. Specifically, the conductive element 24 may be any metal (such as copper, aluminum) or nonmetal (such as graphite) that can be electrically conductive, the conductive element 24 is disposed between two slot-shaped holes 221 in the same electrode region D1, and after the electrode tab 211 passes through the slot-shaped holes 221, the electrode tab 211 is bent toward the conductive element so that the electrode tab 211 contacts the conductive element, so that the electrical connection between the two batteries 21a can be achieved.

With continued reference to fig. 9 and 10, in some embodiments, a guide structure is disposed within the assembly channel C1, the guide structure including a first flange 224 and a second flange 225. In the same fitting groove C1, a first flange 224 is provided on one of the partition plates 223, and a second flange 225 is provided on the other partition plate 223, the first flange 224 and the second flange 225 being opposed.

The first flange 224 is provided with a first inclined surface S1, the second flange 225 is provided with a second inclined surface S2, a preset included angle is formed between the first inclined surface S1 and the second inclined surface S2, and an opening with a caliber gradually reduced from the first end edge of the separator 223 to the second end edge is formed.

The first end edge and the second end edge of the partition plate 223 are two edges of the partition plate 223 that are far away from each other, wherein the first end edge refers to an edge of the partition plate 223 that is away from the base 22a, and the second end edge refers to an edge formed by intersecting the partition plate 223 with the base 22a.

In order to better understand the technical solution of the present utility model, the present description will schematically describe the process of assembling the separator 22 to the battery pack 21 by taking the case that a plurality of batteries 21a are formed in series to form the battery pack 21.

Specifically, the plurality of cells 21a are adjacently fixed together, and the electrode tabs 211 of opposite polarities are opposed between the adjacent cells 21 a. The separator 22 is sleeved at one end of the battery pack 21, where the electrode lugs 211 of the battery pack 21 are arranged in the assembly groove C1 of the separator 22, the electrode lugs 211 are assembled in the assembly groove C1 one by one in the sleeving process, the electrode lugs 211 extend into the assembly groove C1 and then pass through the groove-shaped holes 221 in a compliant manner under the action of the openings formed by the first inclined surface S1 and the second inclined surface S2, the electrode lugs 211 of the battery pack 21 extend out of the matrix 22a, two electrode lugs 211 needing to be electrically connected are positioned in the electrode zone D1 separated by the insulating plate 222, so that the two electrode lugs 211 needing to be electrically connected are positioned in relatively independent areas, erroneous connection with the electrode lugs 211 in other electrode zones D1 is avoided, and the safety is improved.

In some embodiments, the top of the housing box 10 near the top of the box cover 11 and the bottom near the base 122 may be treated with glue to improve the sealing and thermal conductivity of the top and bottom of the housing box 10.

Referring to fig. 8-10, in particular, the separator 22 can further include a contoured edge 226 having a peripheral edge 2261. Wherein the peripheral edge 2261 is convex to the contoured edge 226; contoured edge 226 extends along the edge of base 22a and is configured to conform to the interior wall surface of container 10. Contoured edge 226 may form a receiving channel C2 within receiving compartment 10 by mating with an inner wall of receiving compartment 10 via peripheral edge 2261.

As shown in fig. 3, after the battery module 20 is accommodated in the first accommodating chamber R10, one end provided with the partition 22 faces the case cover 11, and the other end facing away from the partition 22 abuts against the base 122.

Further, before the battery module 20 is assembled in the accommodating case 10, a part of the filling medium may be poured into the accommodating case 10; then, the battery module 20 is placed in the first accommodating cavity R10, and the filling medium at the bottom of the accommodating box 10 is extruded and filled in a filling area formed by the outer surface of the battery module 20 and the inner wall of the accommodating box 10 in the process of placing the battery module 20, so that the bottom in the accommodating box 10 is filled with glue; after the battery module 20 is completely placed in the first accommodating cavity R10, the accommodating groove C2 serving as a filling area is formed by enclosing the profiling edge 226 of the partition 22 and the inner wall of the accommodating box 10, and similarly, a part of filling medium is poured into the accommodating groove C2, so that the top of the accommodating box 10 is filled with glue.

According to the utility model, the bottom and the top of the battery module 20 are filled with glue in a segmented manner, so that the battery module 20 is fixed, the sealing is satisfied, the glue consumption is reduced, and the weight of a product is reduced.

As shown in fig. 6, the battery module 20 further includes an information acquisition board 23 and a battery management system (not shown). Wherein, the information acquisition board 23 is fixed on the separating piece 22 and is electrically connected with the battery pack 21; the battery management system is fixed on the information acquisition board 23 and is electrically connected with the information acquisition board 23.

As shown in fig. 8, specifically, to achieve the fixed assembly of the information collecting plate 23 to the partition 22, the partition 22 may be provided with a clamping structure 227, and the clamping structure 227 may be a hook provided on the edge of the base 22a, where the edge of the information collecting plate 23 is fixed and assembled to the partition 22 by the fastening of the hook.

As shown in fig. 12, the information collecting plate 23 may be provided with a clearance slot C3, and the clearance slot C3 is used for the insulating plate 222 and the electrode lug 211 to pass through, so that the information collecting plate 23 may avoid the assembling interference with the insulating plate 222 provided on the separator 22 and the electrode lug 211 passing through the slot-shaped hole 221 after being assembled on the separator 22.

The information acquisition plate 23 and the partition 22 may also be provided with fool-proof structures. The fool-proof structure may include a positioning hole 231 formed in the information collecting plate 23 and a positioning post 228 (as shown in fig. 8) protruding from the base 22a, where the information collecting plate 23 is matched with the positioning post 228 of the spacer 22 through the positioning hole 231, so that the information collecting plate 23 can be correctly assembled on the spacer 22, and the insulating plate 222 and the electrode lug 211 penetrate through the information collecting plate 23.

Specifically, to achieve the fixed assembly of the battery management system to the information collection plate 23, the information collection plate 23 may be provided with a connection post 234, the connection post 234 is disposed perpendicular to the information collection plate 23, and the height of the connection post 234 is set to be greater than the height of the portion of the insulating plate 222 penetrating through the avoidance slot C3, where the height (the height of the connection post 234, the height of the portion of the insulating plate 222 penetrating through the avoidance slot C3) is a relative height with respect to the surface of the information collection plate 23 facing away from the separator 22 (i.e., the surface on which the connection post 234 is located in the drawing) as a reference plane. In actual assembly, the battery management system can be fixedly assembled above the information acquisition board 23 by using the threaded connection member to pass through the through hole pre-opened in the battery management system and then be in threaded connection with the threaded hole opened in the connection post 234, so that the battery management system is prevented from being interfered with the insulating board 222 or the electrode lug 211.

Further, the information acquisition board 23 is a printed circuit board, which has a conductive layer built therein for realizing its target circuit function; the information collecting plate 23 may further be provided with electrode terminals 235 (including positive and negative terminals) each electrically connected to the conductive layer, and a communication terminal 236, wherein the electrode terminals 235 are also electrically connected to the electrode ears 211 of the battery pack 21 as the total electrode, and the communication terminal 236 is electrically connected to the battery management system.

The information collecting board 23 can collect parameter information of the battery pack 21 through the electrode terminal 235, wherein the positive electrode terminal is electrically connected with the electrode lug 211 of the battery pack 21 as a total positive electrode, the negative electrode terminal is electrically connected with the electrode lug 211 of the battery pack 21 as a total negative electrode, parameters of the battery pack 21 which can be collected include but are not limited to temperature, voltage and current parameters, and the information collecting board 23 collects the collected parameter information to the communication terminal 236.

The battery management system is electrically connected with the communication terminal 236 of the information acquisition board 23 to monitor the state of the battery pack 21 in real time, and a user can know whether the battery pack 21 has leakage, short circuit, overcharge and overdischarge according to the state monitored by the battery management system, so that the battery pack 21 can be subjected to power failure, replacement and other treatments in time, the running efficiency of the battery module 20 is maintained, and the product safety is improved.

As shown in fig. 6, the battery module 20 may further include a bracket assembly 25.

Referring to fig. 13, an exploded view of the bracket assembly 25 is shown, the bracket assembly 25 includes a bracket 25a having an open top end and a second receiving chamber R20 (see fig. 6) therein, and a cushion 25b may be disposed on a portion of an inner surface of the bracket 25 a. The battery pack 21 is accommodated in the second accommodating chamber R20, and the cushion pad 25b is interposed between the outer surface of the battery pack 21 and the inner surface of the bracket 25a, so as to provide an anti-collision and anti-damage protection effect on the battery pack 21.

In the embodiment of the present utility model, the bracket 25a and the accommodating case 10 may be made of metal materials with good heat conducting performance, for example, in some embodiments of the present utility model, the bracket 25a and the accommodating case 10 may be made of aluminum or aluminum alloy, so that the bracket 25a and the accommodating case 10 have the advantages of light weight, high strength and good heat dissipation performance, and the market competitiveness is improved.

With continued reference to fig. 13, in some embodiments, the bracket 25a may include a first frame 251 and a second frame 252, where the first frame 251 and the second frame 252 enclose a second accommodating cavity R20. Specifically, the first frame 251 is provided with a first coaming 2511 and a second coaming 2512 that are perpendicular to each other; the second frame 252 is provided with a third enclosure plate 2521, a fourth enclosure plate 2522 and a fifth enclosure plate 2523, wherein the fourth enclosure plate 2522 connects the third enclosure plate 2521 and the fifth enclosure plate 2523, and the fourth enclosure plate 2522 is perpendicular to the third enclosure plate 2521 and the fourth enclosure plate 2522 at the same time, that is, the third enclosure plate 2521 and the fifth enclosure plate 2523 are opposite. The first and second enclosures 2511 and 2512 of the first frame 251, and the third, fourth and fifth enclosures 2521, 2522 and 2523 of the second frame 252 may be bent and formed by bending machines. The first frame 251 and the second frame 252 may be fixedly connected using a strap 253 (as shown in fig. 6) such that the first enclosure plate 2511 is opposite to the fourth enclosure plate 2522, and the third enclosure plate 2521 is opposite to the fifth enclosure plate 2523 as a side plate of the bracket 25 a; the second shroud 2512 is made to face the top end opening as a bottom plate of the holder 25 a. The cushion pad 25b may be made of soft material, such as foam, rubber, sponge, etc., and the cushion pad 25b is attached to the inner wall of the second receiving chamber R20 surrounded by the first frame 251 and the second frame 252 for absorbing vibration, thereby ensuring the service life of the battery module 20.

According to the utility model, the bracket 25a is provided as the first bracket body 251 and the second bracket body 252 which are detachable, compared with the integrally designed bracket, the battery pack 21 can be assembled in the second accommodating cavity R20 more conveniently, the condition that the battery pack 21 needs to be aligned with the port of the bracket 25a in the process of assembling the battery pack 21 in the second accommodating cavity R20 is avoided, and the disassembly, assembly and maintenance of the battery module 20 are facilitated. In addition, unlike the conventional sandwich arrangement mode of the cushion pad 25b and the battery phase-to-phase arrangement mode of the cushion pad, the battery+the cushion pad, the … +the battery+the cushion pad, the battery is arranged in the arrangement mode of the cushion pad 25b, the battery+the … +the battery+the cushion pad 25b, the cushion pad 25b is thickened if necessary, and the number of the cushion pads 25b is reduced on the premise of meeting the enough battery bulge space, so that the whole volume of the battery module 20 is effectively reduced.

In some embodiments, as shown in fig. 1, the divider 22 covers the top opening of the bracket 25a and is connected to the top of the bracket 25 a.

As shown in fig. 13, specifically, the top of the bracket 25a is provided with a connecting lug 254 for taking and placing during assembly; correspondingly, as shown in fig. 8, the base 22a of the separator 22 is provided with a avoiding slot C4 through which the connection lug 254 passes, and the separator 22 is covered on the top end of the battery pack 21 provided with the electrode lug 211, and the connection lug 254 passes through the avoiding slot C4. Thus, the battery module 20 can be assembled more compactly and reliably as a whole, and can be taken and placed conveniently during assembly.

With continued reference to fig. 13, in some embodiments, a through hole K20 is formed at the bottom of the bracket 25a, and the through hole K20 is used to communicate the first accommodating cavity R10 and the second accommodating cavity R20. Specifically, the through hole K20 may be formed in a side plate and/or a bottom plate of the bracket 25a, and after the battery module 20 is assembled in the second accommodating cavity R20, the filling medium filled in the first accommodating cavity R10 may infiltrate into the second accommodating cavity R20 through the through hole K20 formed in the bottom of the bracket 25 a.

Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present utility model, and are not limiting; the technical features of the above embodiments or in the different embodiments may also be combined within the idea of the utility model, the steps may be implemented in any order, and there are many other variations of the different aspects of the utility model as described above, which are not provided in detail for the sake of brevity; although the utility model has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit of the utility model.

Claims (10)

1. An energy storage device, comprising:

the accommodating box is internally provided with a first accommodating cavity;

the battery module is accommodated in the first accommodating cavity;

the battery module includes a battery pack and a separator; the battery pack comprises a plurality of batteries, and the batteries are adjacently fixed into a whole; the separator includes a base; the base body is provided with a groove-shaped hole and an insulating plate extending along the groove-shaped hole;

the insulating plate is used for separating and forming an electrode area, and the groove-shaped holes are formed in the electrode area; the batteries are provided with electrode lugs, the electrode lugs penetrate through the groove-shaped holes, and two adjacent and electrically connected batteries are connected with each other at the electrode area through the electrode lugs.

2. The energy storage device of claim 1, wherein the base is further provided with a plurality of separator plates, the separator plates being disposed away from the insulating plates;

the plurality of separation plates are mutually parallel to form an assembly groove between two adjacent separation plates, and the assembly groove is used for positioning and assembling the battery; the groove bottom of the assembly groove is provided with the groove-shaped hole for the electrode lug of the battery to pass through.

3. The energy storage device of claim 2, wherein a guide structure is disposed within the assembly slot, the guide structure comprising a first flange and a second flange,

in the same assembly groove, the first flange is arranged on one of the separation plates, the second flange is arranged on the other separation plate, and the first flange and the second flange are opposite;

the first flange is provided with a first inclined plane, the second flange is provided with a second inclined plane, and a preset included angle is formed between the first inclined plane and the second inclined plane.

4. The energy storage device of claim 1, wherein the battery module further comprises an information acquisition board,

the information acquisition board is fixed on the partition piece and is electrically connected with the battery pack.

5. The energy storage device of claim 4, wherein the battery module further comprises a battery management system; the battery management system is fixed on the information acquisition board and is electrically connected with the information acquisition board.

6. The energy storage device of claim 1, wherein the battery module further comprises a bracket assembly,

the support assembly comprises a support with an opening at the top end and a second accommodating cavity arranged in the support, and a buffer cushion arranged on the inner surface of a part of the support;

the battery pack is accommodated in the second accommodating cavity, and the buffer pad is clamped between the outer surface of the battery pack and the inner surface of the bracket.

7. The energy storage device of claim 6, wherein said separator covers a top opening of said rack and is connected to a top of said rack;

the bottom of the bracket is provided with a through hole which is communicated with the second accommodating cavity;

the top of the bracket and the bottom of the bracket are two separated ends of the bracket.

8. The energy storage device of claim 1, wherein the battery module further comprises a conductive element,

the electrode ears of the two cells are electrically connected with the conductive element in the electrode region.

9. The energy storage device of claim 1, wherein the separator further comprises a contoured edge, a surface of the contoured edge being convex with a peripheral edge,

the profiling edge extends along the edge of the substrate; the battery module is assembled in the accommodating box, and an accommodating groove is formed between the profiling edge and the accommodating box;

the first accommodating cavity is filled with sealing medium, one part of the sealing medium is filled at the bottom of the accommodating box, and the other part of the sealing medium is filled in the accommodating groove.

10. The energy storage device of any of claims 1-9, wherein the containment tank comprises a tank body and a tank cover,

the first accommodating cavity is arranged in the box body, and the box cover is covered on the box body;

the case cover is provided with a connector and an air vent, the connector is electrically connected with the battery module, and the air vent is communicated with the first accommodating cavity and the external environment.