CN220138580U - Battery pack - Google Patents

Abstract

The utility model relates to the technical field of batteries, in particular to a battery pack, which comprises a box body and a battery, wherein the battery is accommodated in the box body, the box body comprises an upper cover, the upper cover is positioned above the battery, the top surface of the battery is rectangular and provided with a long side and a short side, the extending direction of the long side is a first direction, the end part of the top surface of the battery along the first direction is a shoulder part, and the top surface of the battery is provided with an explosion-proof structure; and a supporting piece is arranged between the battery and the upper cover, the supporting piece is positioned on the shoulder, a plane where the bottom surface of the upper cover is defined is a reference plane, and the orthographic projection of the supporting piece is not overlapped with the orthographic projection of the explosion-proof structure on the reference plane. Through the structural design, the support member can be utilized to provide a support function, and the structural stability of the battery pack can be improved due to the fact that the shoulder has higher structural strength than other areas of the top surface of the battery. Furthermore, the utility model can avoid the support member from obstructing the pressure relief of the explosion-proof structure when the battery is in thermal runaway.

Description

Battery pack

Technical Field

The utility model relates to the technical field of batteries, in particular to a battery pack.

Background

In the design scheme of the existing battery pack, the edge of the box cover of the battery pack is connected with the box body, and the box cover and the battery are in a suspended state, so that abnormal sound can be generated due to wind noise vibration of the box cover corresponding to the position of the battery in the use process of the battery pack, and the use experience of the battery pack is affected.

Disclosure of Invention

It is therefore a primary object of the present utility model to overcome at least one of the above-mentioned drawbacks of the prior art, and to provide a battery pack that combines a use experience with structural stability and safety.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

according to one aspect of the present utility model, there is provided a battery pack, comprising a case and a battery, the battery being accommodated in the case, the case comprising an upper cover located above the battery, the top surface of the battery being rectangular and having long sides and short sides, the long sides extending in a first direction, the top surface of the battery being provided with an explosion-proof structure at an end portion along the first direction being a shoulder portion; the battery is provided with a support piece between the battery and the upper cover, the support piece is located on the shoulder, a plane where the bottom surface of the upper cover is defined to be a reference plane, and on the reference plane, the orthographic projection of the support piece is not overlapped with the orthographic projection of the explosion-proof structure.

According to the technical scheme, the battery pack provided by the utility model has the advantages and positive effects that:

the support piece is arranged between the battery and the upper cover of the battery pack, the support piece is positioned at the shoulder of the battery, the plane where the bottom surface of the upper cover is defined as a reference surface, and the orthographic projection of the support piece is not overlapped with the orthographic projection of the explosion-proof structure arranged on the top surface of the battery on the reference surface. Through the structural design, the support member can provide a support function between the battery and the upper cover, abnormal sound generated by the suspended state between the upper cover and the battery is avoided, and the use experience of the battery pack is improved. On the basis, the shoulder has higher structural strength than other areas of the top surface of the battery, and the support piece is arranged on the shoulder of the battery, so that the structural stability of the battery pack can be improved. Furthermore, the utility model adopts the structural design that the supporting piece and the explosion-proof structure are not overlapped, thereby avoiding the supporting piece from obstructing the pressure relief of the explosion-proof structure when the battery is out of control, and ensuring the safety of the battery pack.

Drawings

Various objects, features and advantages of the present utility model will become more apparent from the following detailed description of the preferred embodiments of the utility model, when taken in conjunction with the accompanying drawings. The drawings are merely exemplary illustrations of the utility model and are not necessarily drawn to scale. In the drawings, like reference numerals refer to the same or similar parts throughout. Wherein:

fig. 1 is a schematic perspective view of a battery pack according to an exemplary embodiment;

fig. 2 is a schematic perspective view of a part of the structure of the battery pack shown in fig. 1;

FIG. 3 is a partially exploded schematic view of FIG. 2;

fig. 4 to 7 are schematic perspective views of partial structures of a battery pack according to other exemplary embodiments, respectively;

fig. 8 and 9 are partial cross-sectional views of battery packs according to other exemplary embodiments, respectively.

The reference numerals are explained as follows:

100. a case;

110. an upper cover;

1101. a bottom surface;

111. a protruding portion;

112. convex ribs;

200. a battery;

201. a battery string;

202. a battery pack;

210. a shoulder;

220. an explosion-proof structure;

300. a support;

400. a collection assembly;

x, a first direction;

y. second direction.

Detailed Description

Exemplary embodiments that embody features and advantages of the present utility model are described in detail in the following description. It will be understood that the utility model is capable of various modifications in various embodiments, all without departing from the scope of the utility model, and that the description and drawings are intended to be illustrative in nature and not to be limiting.

In the following description of various exemplary embodiments of the utility model, reference is made to the accompanying drawings, which form a part hereof, and in which are shown by way of illustration various exemplary structures, systems, and steps in which aspects of the utility model may be practiced. It is to be understood that other specific arrangements of parts, structures, example devices, systems, and steps may be utilized and structural and functional modifications may be made without departing from the scope of the present utility model. Moreover, although the terms "over," "between," "within," and the like may be used in this description to describe various exemplary features and elements of the utility model, these terms are used herein for convenience only, e.g., in terms of the orientation of the examples depicted in the drawings. Nothing in this specification should be construed as requiring a particular three-dimensional orientation of the structure in order to fall within the scope of the utility model.

Referring to fig. 1, a schematic perspective view of a battery pack according to the present utility model is representatively illustrated. In this exemplary embodiment, the battery pack according to the present utility model is described by taking an in-vehicle battery as an example. Those skilled in the art will readily appreciate that many modifications, additions, substitutions, deletions, or other changes may be made to the specific embodiments described below in order to adapt the relevant designs of the present utility model to other types of battery packs, and such changes remain within the principles of the battery packs presented herein.

As shown in fig. 1, in an embodiment of the present utility model, a battery pack according to the present utility model includes a case 100 and a battery 200 (not shown in fig. 1). Referring to fig. 2 and 3 in combination, a schematic perspective view of a part of the structure of the battery pack is representatively shown in fig. 2, in which the combined structure of the case 100 and the battery 200 is specifically shown, with the upper cover 110 of the case 100 removed; a partially exploded schematic view of fig. 2 is representatively illustrated in fig. 3, with support 300 particularly separated from battery 200. The structure, connection manner and functional relationship of the main components of the battery pack according to the present utility model will be described in detail with reference to the above drawings.

As shown in fig. 1 to 3, in an embodiment of the present utility model, the battery 200 is accommodated in the case 100, and the case 100 includes an upper cover 110, and the upper cover 110 is positioned above the battery 200. The top surface of the battery 200 is rectangular and has long sides and short sides, the extending direction of the long sides is a first direction X, the end of the top surface of the battery 200 along the first direction X is a shoulder 210, and the top surface of the battery 200 is provided with an explosion-proof structure 220, such as, but not limited to, an explosion-proof valve. On this basis, a support 300 is disposed between the battery 200 and the upper cover 110, the support 300 is located at the shoulder 210 of the battery 200, and a plane on which the bottom surface of the upper cover 110 is defined is a reference plane, on which the front projection of the support 300 does not overlap with the front projection of the explosion-proof structure 220. Through the above structural design, the support member 300 can provide a support function between the battery 200 and the upper cover 110, so that abnormal sound generated by the suspended state between the upper cover 110 and the battery 200 is avoided, and the use experience of the battery pack is improved. On this basis, the support 300 is disposed on the shoulder 210 of the battery 200 according to the present utility model, which can improve the structural stability of the battery pack, because the shoulder 210 has higher structural strength than other regions of the top surface of the battery 200. Furthermore, the utility model adopts the structural design that the supporting piece 300 and the explosion-proof structure 220 are not overlapped, thereby avoiding the supporting piece 300 from obstructing the pressure release of the explosion-proof structure 220 when the battery 200 is out of control, and ensuring the safety of the battery pack. Where support 300 covers explosion proof structures 220, one may risk collapsing explosion proof structures 220, and another may cause difficulties in opening explosion proof structures 220 (e.g., cause excessive opening pressure of the explosion proof valve).

As shown in fig. 2 and 3, in an embodiment of the present utility model, the battery pack further includes a collecting assembly 400, where the collecting assembly 400 includes a bus bar, and the collecting assembly 400 is disposed on the top surface of the battery 200 and connected to the post assembly of the battery 200. On this basis, the front projection of the support 300 does not overlap with the front projection of the acquisition assembly 400 on the above-mentioned reference plane. Through the structural design, the bus bar and the pole assembly are electrically connected through welding, and the conductive sheet of the flexible wiring harness board is welded on the bus bar generally.

In an embodiment of the present utility model, the support 300 may include a buffer portion for providing a buffer effect between the upper cover 110 and the battery 200. For example, the buffer may be an elastic structure. Through the above structural design, the present utility model can utilize the buffer portion of the support member 300 to provide a certain buffer effect between the battery 200 and the upper cover 110, so as to avoid the impact force from being directly transmitted to the top of the battery 200 when the upper cover 110 receives the impact, and further improve the structural stability and safety of the battery pack.

Based on the structural design that the support 300 includes the buffer portion, in an embodiment of the present utility model, the support 300 is in a compressed state between the upper cover 110 and the battery 200. Through the above-mentioned structural design, when support 300 sets up in the battery package (i.e. when upper cover 110 is not dismantled), can exert certain elastic force to battery 200 and upper cover 110 respectively because of the elasticity that self had, according to this clearance that avoids probably appearing between support 300 and the upper cover 110, further avoid producing abnormal sound for unsettled state between upper cover 110 and the battery 200, further promote the use experience of battery package.

As shown in fig. 2 and 3, in an embodiment of the present utility model, the battery pack according to the present utility model may include at least two batteries 200 arranged in a second direction Y perpendicular to the first direction X and parallel to the above-mentioned reference plane. On the basis of this, on the reference plane, the orthographic projection of the support 300 takes the shape of an elongated bar extending along the second direction Y, at least one support 300 being located simultaneously at the shoulders 210 of at least two adjacent cells 200 arranged along the second direction Y. For example, the support 300 shown in the drawings is simultaneously located at the shoulders 210 of eight cells 200 aligned in the second direction Y. Through the above structural design, the support member 300 can be utilized to realize a support function between at least two batteries 200 and the cover plate, so that abnormal sound generated due to the suspended state between the upper cover 110 and the batteries 200 is further avoided, and the use experience of the battery pack is further improved.

Referring to fig. 4, a schematic perspective view of a portion of a battery pack capable of embodying the principles of the present utility model in another exemplary embodiment is representatively illustrated in fig. 4, wherein the combined structure of the case 100 and the battery 200 is specifically illustrated, with the upper cover 110 of the case 100 omitted.

As shown in fig. 4, in an embodiment of the present utility model, taking the case that the battery pack includes at least two batteries 200 arranged along the second direction Y as an example, at least two supporting members 300, for example, but not limited to, two supporting members 300 shown in the drawings, may be disposed on the shoulder 210 on the same side of the at least two batteries 200 along the first direction X, and the at least two supporting members 300 are arranged at intervals along the second direction Y. Specifically, each of the supports 300 shown in the drawings is provided to three cells 200 arranged in the second direction Y. Through the above structural design, the present utility model can reduce the weight of the battery pack and can form the exhaust passage using the adjacent support 300. In some embodiments, when the battery pack includes at least two supporting members 300 arranged along the second direction Y, each supporting member 300 may be disposed on only one battery 200, or may be disposed on two, four or more than four batteries 200 at the same time, which is not limited to the embodiment.

As shown in fig. 4, based on the structural design that the battery pack includes at least two batteries 200 arranged along the second direction Y, in an embodiment of the present utility model, the proposed battery includes at least three batteries 200 arranged along the second direction Y, such as, but not limited to, eight batteries 200 shown in the drawings. On the basis of this, on the above-mentioned reference plane, the orthographic projection of at least one cell 200 does not overlap with the orthographic projection of the support 300, in other words, at least one cell 200 (for example, but not limited to, two cells 200 shown in the drawings) is provided without the support 300 at the space between two adjacent supports 300 aligned along the second direction Y. In some embodiments, when the battery pack includes at least two supporting members 300 arranged along the second direction Y, one, three or more than three of the batteries 200 may be disposed between two adjacent supporting members 300 arranged along the second direction Y without providing the supporting members 300, which is not limited to the present embodiment.

Referring to fig. 5, a schematic perspective view of a portion of a battery pack capable of embodying the principles of the present utility model in another exemplary embodiment is representatively illustrated in fig. 5, wherein the combined structure of the case 100 and the battery 200 is specifically illustrated, with the upper cover 110 of the case 100 omitted.

As shown in fig. 5, in an embodiment of the present utility model, the battery pack according to the present utility model includes at least two batteries 200 arranged along a first direction X. On this basis, at least one support 300 is simultaneously located at the shoulders 210 of two cells 200 aligned in the first direction X.

As shown in fig. 5, in an embodiment of the present utility model, a battery pack according to the present utility model may include at least two battery strings 201 aligned in a first direction X, the battery strings 201 including at least two batteries 200 aligned in a second direction Y. On this basis, the support 300 may be located at the shoulders 210 of the cells 200 of two adjacent cell rows 201 at the same time, and the support 300 is located at the shoulders 210 of at least two cells 200 belonging to the same cell row 201. Through the structural design, the utility model can reduce the consumption of the supporting piece 300 and reduce the cost and the weight.

Referring to fig. 6, a schematic perspective view of a portion of a battery pack capable of embodying the principles of the present utility model in another exemplary embodiment is representatively illustrated in fig. 6, wherein the combined structure of the case 100 and the battery 200 is specifically illustrated, with the upper cover 110 of the case 100 omitted.

As shown in fig. 6, in an embodiment of the present utility model, still taking a structural design of the battery pack including at least two battery strings 201 aligned in the first direction X as an example, the support 300 may be disposed not only between two adjacent battery strings 201, for example, in the embodiment shown in fig. 5, but also on the shoulder 210 of the end of the battery 200 remote from the other battery string 201.

Referring to fig. 7, a schematic perspective view of a portion of a battery pack capable of embodying the principles of the present utility model in another exemplary embodiment is representatively illustrated in fig. 7, wherein the combined structure of the case 100 and the battery 200 is specifically illustrated, and a portion of the area is further enlarged and displayed.

As shown in fig. 7, in an embodiment of the present utility model, a battery pack according to the present utility model may include at least two battery packs 202 arranged in a first direction X, the battery packs 202 including at least two battery columns 201 arranged in the first direction X, the battery columns 201 including at least two batteries 200 arranged in a second direction Y. On this basis, on the above-mentioned reference plane, the orthographic projection of the support 300 is overlapped with the orthographic projection of the battery 200 belonging to only one battery pack 202, and the orthographic projection of the support 300 is not straddled the orthographic projections of the adjacent two battery packs 202.

Referring to fig. 8, a partial cross-sectional view of a battery pack capable of embodying the principles of the present utility model is representatively illustrated in fig. 8 in another exemplary embodiment.

As shown in fig. 8, in an embodiment of the present utility model, the bottom surface of the upper cover 110 has a protrusion 111 protruding toward the battery 200. On the basis of this, on the above-mentioned reference plane, the orthographic projection of the supporting member 300 at least partially overlaps with the orthographic projection of the projecting portion 111. With the above structural design, since the distance between the protruding portion 111 of the upper cover 110 and the battery 200 is smaller than the distance between the other areas of the upper cover 110 and the battery 200, the thickness of the support 300 can be further reduced, the cost is reduced, and the calculation of the front end dimension chain can be facilitated.

Referring to fig. 9, a partial cross-sectional view of a battery pack capable of embodying the principles of the present utility model is representatively illustrated in fig. 9 in another exemplary embodiment.

As shown in fig. 9, in an embodiment of the utility model, taking a structural design with a protruding portion 111 on the bottom surface of the upper cover 110 as an example, the upper cover 110 may be formed with at least two protruding ribs 112 by integral stamping, the protruding ribs 112 protrude away from the battery 200, and the protruding portion 111 is formed in the upper cover 110 in a region between two adjacent protruding ribs 112. On the basis of this, on the above-mentioned reference plane, the orthographic projection of the supporting member 300 and the orthographic projection of the bead 112 may not overlap. With the above structural design, the present utility model can reduce ineffective portions of the support 300 (i.e., portions corresponding to the beads 112).

It should be noted herein that the battery packs shown in the drawings and described in this specification are only a few examples of the wide variety of battery packs that can employ the principles of the present utility model. It should be clearly understood that the principles of the present utility model are in no way limited to any details of the battery pack shown in the drawings or described in this specification.

In summary, the support 300 is disposed between the battery 200 and the upper cover 110 of the battery pack according to the present utility model, the support 300 is located at the shoulder 210 of the battery 200, a plane where the bottom surface of the upper cover 110 is defined is a reference plane, and on the reference plane, the front projection of the support 300 and the front projection of the explosion-proof structure 220 disposed on the top surface of the battery 200 do not overlap. Through the above structural design, the support member 300 can provide a support function between the battery 200 and the upper cover 110, so that abnormal sound generated by the suspended state between the upper cover 110 and the battery 200 is avoided, and the use experience of the battery pack is improved. On this basis, the support 300 is disposed on the shoulder 210 of the battery 200 according to the present utility model, which can improve the structural stability of the battery pack, because the shoulder 210 has higher structural strength than other regions of the top surface of the battery 200. Furthermore, the utility model adopts the structural design that the supporting piece 300 and the explosion-proof structure 220 are not overlapped, thereby avoiding the supporting piece 300 from obstructing the pressure release of the explosion-proof structure 220 when the battery 200 is out of control, and ensuring the safety of the battery pack.

Exemplary embodiments of the battery pack according to the present utility model are described and/or illustrated in detail above. Embodiments of the utility model are not limited to the specific embodiments described herein, but rather, components and/or steps of each embodiment may be utilized independently and separately from other components and/or steps described herein. Each component and/or each step of one embodiment may also be used in combination with other components and/or steps of other embodiments. When introducing elements/components/etc. that are described and/or illustrated herein, the terms "a," "an," and "the" are intended to mean that there are one or more of the elements/components/etc. The terms "comprising," "including," and "having" are intended to be inclusive and mean that there may be additional elements/components/etc., in addition to the listed elements/components/etc. Furthermore, the terms "first" and "second" and the like in the claims and in the description are used for descriptive purposes only and not for numerical limitation of their subject matter.

While the utility model has been described in terms of various specific embodiments, those skilled in the art will recognize that the utility model can be practiced with modification within the spirit and scope of the claims.

Claims (12)

1. The battery pack is characterized by comprising a box body and a battery, wherein the battery is accommodated in the box body, the box body comprises an upper cover, the upper cover is positioned above the battery, the top surface of the battery is rectangular and provided with a long side and a short side, the extending direction of the long side is a first direction, the end part of the top surface of the battery along the first direction is a shoulder part, and an explosion-proof structure is arranged on the top surface of the battery; the battery is provided with a support piece between the battery and the upper cover, the support piece is located on the shoulder, a plane where the bottom surface of the upper cover is defined to be a reference plane, and on the reference plane, the orthographic projection of the support piece is not overlapped with the orthographic projection of the explosion-proof structure.

2. The battery pack of claim 1, further comprising a collection assembly disposed on a top surface of the battery and connected to a post assembly of the battery; wherein, on the reference plane, the orthographic projection of the support does not overlap with the orthographic projection of the acquisition assembly.

3. The battery pack of claim 1, wherein the support member includes a cushioning portion for providing a cushioning effect between the cover and the battery.

4. The battery pack of claim 3, wherein the support is in a compressed state between the upper cover and the battery.

5. The battery pack of claim 1, wherein the battery pack comprises at least two cells arranged in a second direction, the second direction being perpendicular to the first direction and parallel to the reference plane; wherein, on the reference plane, the orthographic projection of the support piece is in the shape of an elongated bar extending along the second direction, and at least one support piece is simultaneously positioned at the shoulder of at least two adjacent batteries arranged along the second direction.

6. The battery pack of claim 1, wherein the battery pack comprises at least two cells arranged in a second direction, the second direction being perpendicular to the first direction and parallel to the reference plane; at least two supporting pieces are arranged on the shoulders of the same side of at least two batteries along the first direction, and the at least two supporting pieces are arranged at intervals along the second direction.

7. The battery pack of claim 6, wherein the battery comprises at least three batteries arranged along the second direction; wherein on the reference plane, the orthographic projection of at least one of the batteries does not overlap with the orthographic projection of the support.

8. The battery pack of claim 1, wherein the battery pack comprises at least two batteries arranged along the first direction; wherein at least one of the supports is located at the shoulders of two of the cells arranged in the first direction at the same time.

9. The battery pack of claim 1, wherein the battery pack comprises at least two battery columns arranged along the first direction, the battery columns comprising at least two batteries arranged along a second direction, the second direction being perpendicular to the first direction and parallel to the reference plane; wherein the support members are simultaneously positioned at the shoulders of the cells of two adjacent cell rows, and the support members are positioned at the shoulders of at least two cells belonging to one cell row.

10. The battery pack of claim 9, wherein the battery pack comprises at least two battery packs arranged along the first direction, the battery packs comprising at least two of the battery columns arranged along the first direction; and on the reference surface, the orthographic projection of the supporting piece is only overlapped with the orthographic projection of the battery belonging to one battery pack, and the orthographic projection of the supporting piece is not spanned with the orthographic projections of the two adjacent battery packs.

11. The battery pack according to any one of claims 1 to 10, wherein a bottom surface of the upper cover has a projection projecting toward the battery; wherein, on the reference plane, the orthographic projection of the support member at least partially overlaps the orthographic projection of the projection.

12. The battery pack according to claim 11, wherein the upper cover is formed with at least two beads protruding away from the battery via integral stamping, the upper cover forming the protruding portion in a region between two adjacent beads; wherein, on the reference plane, the orthographic projection of the support piece is not overlapped with the orthographic projection of the convex rib.