CN219303820U - Battery device - Google Patents

Abstract

The utility model relates to the technical field of batteries, in particular to a battery device, which comprises a battery pack, an end insulating plate and a buffer piece, wherein the battery pack comprises a plurality of batteries which are arranged along a first horizontal direction, at least one end of the battery pack along the first direction is provided with the end insulating plate, the end insulating plate comprises a body and a flanging, the body is arranged on one side, opposite to other batteries, of the battery positioned at the end, the flanging is connected with the body, the other end of the flanging is turned over towards the battery pack, at least one part of the flanging extends along the first direction, the bottom of the flanging is pressed against the top of the battery pack, and the buffer piece is clamped between the body and the battery pack. Through the structural design, the battery pack can be limited and fixed by utilizing the flanging of the end insulating plate, the strength of the top of the battery pack can be enhanced, the buffer function between the battery pack and the end insulating plate is ensured, meanwhile, the contact failure between the end insulating plate and the battery pack is avoided, and the overall structural strength of the battery device is improved.

Description

Battery device

Technical Field

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

Background

In the design of the existing battery device, a buffer member is arranged between the end insulating plate and the battery pack, and the buffer member can absorb design tolerance when the battery pack is put into the box and can provide expansion space for the battery pack. However, in the battery device under the jolt vibration working condition, the battery pack can form the deformation phenomenon of arch and inverted arch alternation along the arrangement direction of a plurality of batteries due to up-and-down vibration, so that the buffer part loses contact with the batteries and the end insulating plates, and the force of the battery pack cannot be conducted to the end insulating plates and the beams, namely, the battery pack loses the bearing path of the beams and only supports the battery pack by the cold plate at the bottom, the bearing range of the cold plate is exceeded, the cold plate is easily damaged, and in addition, the thinner battery shell can be pulled and extruded to deform.

Disclosure of Invention

It is 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 device having a high overall package strength.

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 device, comprising a battery pack including a plurality of batteries arranged in a first horizontal direction, an end insulating plate provided at least one end of the battery pack in the first direction, the end insulating plate including a body provided at a side of the battery located at an end facing away from other batteries, and a flange one end of which is connected to the body and the other end of which is folded toward the battery pack, at least a portion of which extends in the first direction, a bottom of which is pressed against a top of the battery pack, and a buffer member interposed between the body and the battery pack.

As can be seen from the above technical solutions, the battery device provided by the present utility model has the following advantages and positive effects:

the battery device comprises a battery pack, an end insulating plate and a buffer piece, wherein the end insulating plate comprises a body and a turned-over edge, one end of the turned-over edge is connected with the body, the other end of the turned-over edge is turned over towards the battery pack, the turned-over edge at least partially extends along the arrangement direction of the batteries, the bottom of the turned-over edge is pressed against the top of the battery pack, and the buffer piece is clamped between the body and the battery pack. Through the structural design, the battery pack can be limited and fixed by utilizing the flanging of the end insulating plate, the strength of the top of the battery pack can be enhanced, the buffer function between the battery pack and the end insulating plate is ensured, meanwhile, the contact failure between the end insulating plate and the battery pack is avoided, and the overall structural strength of the battery device is improved.

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 device according to an exemplary embodiment;

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

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

FIG. 4 is a schematic partial cross-sectional view of FIG. 2;

FIG. 5 is a side view of FIG. 2;

fig. 6 is a schematic perspective view of the end insulating plate shown in fig. 3;

fig. 7 is a schematic perspective view of an end insulating plate of a battery device according to another exemplary embodiment;

fig. 8 is a partial cross-sectional view of a battery device according to still another exemplary embodiment.

The reference numerals are explained as follows:

100. a battery pack;

110. a battery;

110'. End cell;

200. an end insulating plate;

210. a body;

220. flanging;

221. a glue layer;

230. a thickened region;

300. a buffer member;

400. a battery box;

d1 to D3, thickness;

l, length;

w1, width;

w2, width;

x, a first horizontal direction;

y. a second horizontal 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 device according to the present utility model is representatively illustrated. In this exemplary embodiment, the battery device according to the present utility model is described as being applied to a vehicle-mounted battery. 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 devices, and such changes are still within the principles of the battery devices presented herein.

As shown in fig. 1, in an embodiment of the present utility model, a battery device according to the present utility model includes a battery pack 100, an end insulating plate 200, a buffer 300, and a battery case 400. Referring to fig. 3 to 6 in combination, a schematic perspective view of a partial structure of a battery device is representatively illustrated in fig. 2, in which a combined structure of one battery pack 100 and end insulating plates 200 at both ends is specifically illustrated; a partially exploded schematic view of fig. 2 is representatively illustrated in fig. 3; FIG. 4 representatively illustrates a partial cross-sectional schematic view of FIG. 2; a side view of fig. 2 is representatively illustrated in fig. 5; a schematic perspective view of the end insulating plate 200 is representatively illustrated in fig. 6. The structure, connection manner and functional relationship of the main components of the battery device according to the present utility model will be described in detail below with reference to the above-mentioned drawings.

As shown in fig. 1 to 6, in an embodiment of the present utility model, the battery pack 100 is accommodated in a battery case 400, and the battery pack 100 includes a plurality of batteries 110, and the batteries 110 are arranged along a first horizontal direction X, i.e., the arrangement direction of the batteries 110 is defined as the first horizontal direction X in the present specification. The battery pack 100 is provided with an end insulating plate 200 at least one end in the first direction X, i.e., for one battery pack 100, the end insulating plate 200 may be provided at one end in the first direction X, or the end insulating plates 200 may be provided at both ends in the first direction X, respectively. The end insulating plate 200 includes a body 210 and a flange 220, the body 210 is disposed on one side of the battery located at the end (i.e. the end battery 110') facing away from the other batteries 110, one end of the flange 220 is connected to the body 210, the other end of the flange 220 is turned towards the battery pack 100, the flange 220 extends along the first direction X, and the bottom of the flange 220 is pressed against the top of the battery pack 100. The buffer 300 is interposed between the body 210 and the battery pack 100. It should be noted that, in the present specification, the cell 110 located at the end along the first direction is defined as an end cell 110', and on this basis, the body 210 is located at a side of the end cell 110' facing away from the other cells 110, and the flange 220 is pressed against at least a portion of the top of the end cell 110'. Through the structural design, the utility model can limit and fix the battery pack 100 by utilizing the flange 220 of the end insulating plate 200, can enhance the strength of the top of the battery pack 100, can avoid the contact failure between the end insulating plate 200 and the battery pack 100 while ensuring the buffer function between the battery pack 100 and the end insulating plate 200, and is beneficial to improving the overall structural strength of the battery device.

In the embodiment shown in fig. 1, a case 400 of a battery device is taken as an example, in which a plurality of (for example, four in the drawing) battery packs 100 can be accommodated, and only one battery pack 100 is shown in fig. 1. In some embodiments, when the battery device according to the present utility model includes a plurality of battery packs 100, there may be at least one battery pack 100 having the end insulating plate with the flange 220 at least one end along the first horizontal direction, or the battery device according to the present utility model may also include only one battery pack 100, which is not limited to the embodiment.

As shown in fig. 4, in an embodiment of the present utility model, all of the flanges 220 extend along the first direction X, that is, the flanges 220 are entirely straight. In some embodiments, the flange 220 may extend only partially in the first direction X. In other words, in various possible embodiments consistent with the design concept of the present utility model, at least a portion of the flange 220 extends along the first direction X, and is not limited to the above-described embodiments.

As shown in fig. 5, in an embodiment of the present utility model, for the end insulating plate 200 and the end battery 110 'located at the same end in the first horizontal direction X, the other end of the flange 220 of the end insulating plate 200 may be further away from the end insulating plate 200 than the side of the end battery 110' facing away from the end insulating plate 200 in the first horizontal direction X. In other words, in the first horizontal direction X, the flange 220 extends beyond the end cell 110' adjacent to the end insulating plate 200 to above at least one other cell 110. Through the structural design, the utility model can further optimize the limiting and fixing effects of the flange 220 on the battery pack 100, and further enhance the strength of the top of the battery pack 100. In some embodiments, for the end insulating plate 200 and the end battery 110' at the same end, the flange 220 may not extend beyond the end battery 110', for example, along the first horizontal direction X, the other end of the flange 220 may be flush with the side of the end battery 110' facing away from the end insulating plate 200, or the other end of the flange 220 may be between the side of the end battery 110' facing away from the end insulating plate 200 and the end insulating plate 200, i.e. the flange 220 may extend only to at least part of the top of the adjacent end battery 110', which is not limited in this embodiment.

As shown in FIG. 5, in one embodiment of the present utility model, the thickness D1 of the flange 220 may have a ratio of 1/10 to 9/10, such as 1/10, 1/5, 1/2, 9/10, etc., in the thickness D2 of the body 210. Through the structural design, the utility model can avoid the situation that the thickness D1 of the flange 220 occupies too much space in the height direction of the battery pack due to too large ratio, and can avoid the situation that the structural strength of the flange 220 is insufficient due to too small ratio of the thickness D1 of the flange 220. In some embodiments, the ratio of the thickness D1 of the flange 220 to the thickness D2 of the body 210 may be less than 1/10, or may be greater than 9/10, such as 1/11, 10/11, etc., but is not limited to this embodiment.

As shown in fig. 5, in an embodiment of the present utility model, for the end insulating plate 200 and the end cell 110 'located at the same end in the first horizontal direction X, the length L of the flange 220 may be 0.5 to 3 times, for example, 0.5 times, 1 time, 2 times, 3 times, etc., the thickness D3 of the cell 110 (the thickness of each cell 110 of the battery pack 100 including the end cell 110' is equal) in the first horizontal direction X. Through the structural design, the utility model can avoid the problem that the whole weight of the battery device is increased and the space is wasted due to the overlarge length L of the flange 220, and can also avoid the problem that the limiting and fixing effects of the flange 220 on the battery pack 100 are not obvious due to the overlarge length L of the flange 220. In some embodiments, the length L of the flange 220 may be less than 0.5 times or more than 3 times, such as 0.45 times, 3.1 times, etc., the thickness D3 of the battery 110, which is not limited in this embodiment.

For example, the embodiment shown in fig. 5 is described by taking the example that the flange 220 extends beyond the adjacent end cell 110' in the first horizontal direction X but does not extend beyond the second cell 110, and the length L of the flange 220 is 1 or more times, such as but not limited to 1.2 times, 1.5 times, etc., the thickness D3 of the cell 110. In some embodiments, when the flange 220 corresponds to or exceeds two cells 110, the length L of the flange 220 is more than 2 times the thickness D3 of the cells 110, such as, but not limited to, 2 times, 2.5 times, 3 times, etc. Furthermore, when the flange 220 does not extend beyond the adjacent end cell 110', the length L of the flange 220 is less than the thickness D3 of the cell 110, e.g., the length L of the flange 220 is 0.5 times, 0.9 times, etc., the thickness D3 of the cell 110. In addition, when the turn-up 220 does not correspond to only the adjacent end cell 110', the length L of the turn-up 220 may be equal to the thickness D3 of the cell 110, i.e., the length L of the turn-up 220 is 1 time the thickness D3 of the cell 110.

In an embodiment of the present utility model, the body 210 and the flange 220 of the end insulating plate 200 may be in a split structure, that is, the body 210 and the flange 220 may be two relatively independent components and connected by various possible connection manners. Through the structural design, the utility model can facilitate the assembly of the end insulating plate 200 and the battery pack 100 in groups, and avoid structural interference caused by the flange 220 when the battery pack 100 is assembled. In some embodiments, the body 210 and the flange 220 of the end insulating plate 200 may be integrally formed according to the requirement of assembling the battery packs 100, but not limited to this embodiment.

Based on the structural design that the body 210 and the flange 220 of the end insulating plate 200 adopt a split structure, in an embodiment of the present utility model, the connection mode between the body 210 and the flange 220 may be a hot-melt connection. In some embodiments, when the body 210 and the flange 220 are designed in a split structure, the body 210 and the flange 220 may be connected by adhesive, welding, or connecting members. Furthermore, when the body 210 and the flange 220 are integrally formed, the processes such as integral stamping and integral casting may be specifically adopted, which are not limited to the present embodiment.

As shown in fig. 6, in an embodiment of the present utility model, the end insulating plate 200 may include only one turn-up 220. Through the above structural design, the present utility model can simplify the structural complexity of the end insulating plate 200, and further simplify the manufacturing process complexity of the end insulating plate 200 when the body 210 and the flange 220 adopt the structural design of a split structure.

As shown in fig. 6, based on the structural design that the end insulating plate 200 includes one turned-up edge 220, in an embodiment of the present utility model, the width W1 of the turned-up edge 220 may have a ratio of 1/4 to 1, such as 1/4, 1/2, 4/5, 1, etc., in the width W2 of the body 210 along the second horizontal direction Y perpendicular to the first horizontal direction X. Through the above structural design, the utility model can avoid that the width ratio of the flange 220 in the body 210 is too small to cause insufficient limit and fixing effects of the flange 220 on the battery pack 100, and can also avoid that the width ratio of the flange 220 in the body 210 is larger than 1 to cause that the flange 220 exceeds the body 210 along the second horizontal direction Y to cause space waste. In some embodiments, when the end insulating plate 200 includes a flange 220, the width W1 of the flange 220 may occupy less than 1/4, such as 1/5, of the width W2 of the body 210, which is not limited to this embodiment.

As shown in fig. 6, in one embodiment of the present utility model, the end insulating plate 200 has a thickened region 230, and the thickness of the thickened region 230 in the first horizontal direction X is greater than the thickness of other regions of the end insulating plate 200 in the first horizontal direction X. For example, the thickened region 230 may be a region of the end insulating plate 200 facing the reinforcing ribs provided on the surface of the battery pack 100. On this basis, in the second horizontal direction Y, the flange 220 may correspond to the position of the thickened region 230.

Referring to fig. 7, a schematic perspective view of an end insulating plate 200 of a battery device according to the principles of the present utility model in another exemplary embodiment is representatively illustrated in fig. 7.

As shown in fig. 7, in an embodiment of the present utility model, the end insulating plate 200 may include six turned-up edges 220, and the turned-up edges 220 are spaced apart in the second horizontal direction Y. Through the above structural design, the utility model can provide more uniform limiting and fixing effects for the battery pack 100 by utilizing the flanges 220, and can simultaneously utilize the gaps between the adjacent flanges 220 for the arrangement of related structures (such as external conductive bars, protective supports and the like) of the battery pack 100. In some embodiments, the end insulating plate 200 may also include two, three, four, five, seven or more flanges 220, in other words, in various possible embodiments consistent with the design concept of the present utility model, the end insulating plate 200 may include at least two flanges 220, and the at least two flanges 220 are spaced along the second horizontal direction Y perpendicular to the first horizontal direction X, which is not limited to the above embodiments.

Referring to fig. 8, a partial cross-sectional view of a battery device in accordance with the principles of the present utility model in another exemplary implementation is representatively illustrated in fig. 8.

As shown in fig. 8, in an embodiment of the present utility model, the flange 220 of the end insulating plate 200 and the battery pack 100 may be adhesively connected, that is, the bottom of the flange 220 and the top of the battery 110 are adhesively connected, and it may be understood that the adhesive layer 221 shown in fig. 8 adheres the flange 220 and the battery 110. Through the structural design, the limiting and fixing effects of the flange 220 on the battery pack 100 can be further optimized, and the overall structural strength of the battery device is further enhanced.

It should be noted herein that the battery devices shown in the drawings and described in this specification are only a few examples of the wide variety of battery devices 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 of the details of the battery device or any of the components of the battery device shown in the drawings or described in the present specification.

In summary, the battery device according to the present utility model includes the battery pack 100, the end insulating plate 200 and the buffer 300, wherein the end insulating plate 200 includes the body 210 and the flange 220, one end of the flange 220 is connected to the top of the body 210, the other end extends to the upper side of the battery pack 100 along the arrangement direction of the batteries 110, the bottom of the flange 220 is pressed against the top of the battery pack 100, and the buffer 300 is sandwiched between the body 210 and the battery pack 100. Through the structural design, the utility model can limit and fix the battery pack 100 by utilizing the flange 220 of the end insulating plate 200, can enhance the strength of the top of the battery pack 100, can avoid the contact failure between the end insulating plate 200 and the battery pack 100 while ensuring the buffer function between the battery pack 100 and the end insulating plate 200, and is beneficial to improving the overall structural strength of the battery device.

Exemplary embodiments of the battery device proposed by 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 (10)

1. The utility model provides a battery device, its characterized in that includes group battery, end insulation board and bolster, the group battery is including a plurality of batteries of arranging along first horizontal direction, the group battery is followed at least one end of first horizontal direction is provided with end insulation board, end insulation board includes body and turn-ups, the body set up in the battery that is located the tip one side of other batteries dorsad, turn-ups one end connect in the body, the other end orientation the group battery turns over, at least a portion of turn-ups is followed first horizontal direction extends, the bottom of turn-ups press prop against in the top of group battery, the bolster press from both sides in the body with between the group battery.

2. The battery device according to claim 1, wherein among the plurality of batteries, a battery located at an end in the first horizontal direction is an end battery; and for the end insulating plate and the end battery at the same end, along the first horizontal direction, the other end of the flanging is far away from the end insulating plate compared with the side surface of the end battery, which is opposite to the end insulating plate.

3. The battery device according to claim 1, wherein a ratio of a thickness of the burring to a thickness of the body is 1/10 to 9/10.

4. The battery device according to claim 1, wherein a length of the flange in the first horizontal direction is 0.5 to 3 times a thickness of the battery.

5. The battery device according to any one of claims 1 to 4, wherein the body and the flange are of a split structure.

6. The battery device of any one of claims 1-4, wherein the end insulating plate comprises one of the flanges.

7. The battery device according to claim 6, wherein a ratio of a width of the burring to a width of the body in a second horizontal direction perpendicular to the first horizontal direction is 1/4 to 1.

8. The battery device of claim 1, wherein the end insulating plate includes at least two of the flanges, the at least two of the flanges being spaced apart along a second horizontal direction perpendicular to the first horizontal direction.

9. The battery device according to claim 1 or 8, wherein the end insulating plate has a thickened region having a thickness in the first horizontal direction that is greater than a thickness in the first horizontal direction of other regions of the end insulating plate; wherein, along the second horizontal direction perpendicular to the first horizontal direction, the flanging corresponds to the position of the thickening area.

10. The battery device of claim 1 or 8, wherein the flange is adhesively connected to the battery pack.

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