CN217823149U

CN217823149U - Battery device

Info

Publication number: CN217823149U
Application number: CN202221948855.3U
Authority: CN
Inventors: 关俊山; 谷亮杰; 颜廷露
Original assignee: China Lithium Battery Technology Co Ltd
Current assignee: China Lithium Battery Technology Co Ltd
Priority date: 2022-07-26
Filing date: 2022-07-26
Publication date: 2022-11-15
Anticipated expiration: 2032-07-26

Abstract

The utility model relates to the technical field of batteries, in particular to a battery device, which comprises a battery pack and a battery pack output pole, wherein the battery pack comprises a plurality of batteries which are arranged along a first direction, the batteries are provided with two first side surfaces which are spaced along the first direction and are respectively vertical to the first direction, and the battery pack output pole is positioned on the first side surface of the battery which is positioned at the end part along the first direction and is back to other batteries; the first side surface is provided with a plurality of corner parts, the battery pack output pole is positioned at one corner part, and the explosion-proof valve of the battery is arranged at the other corner part. Through the structure design, the utility model discloses high temperature liquid contact group battery output pole when can avoiding explosion-proof valve pressure release jet flow avoids the group battery output pole to produce the bad scheduling problem of short circuit, improves battery device's security performance.

Description

Battery device

Technical Field

The utility model relates to a battery technology field especially relates to a battery device.

Background

In the existing battery device, the battery pack output terminal is located at a side of the battery where the explosion-proof valve is provided, and the battery pack output terminal is disposed adjacent to the explosion-proof valve. Therefore, when the explosion-proof valve releases pressure and sprays flow, high-temperature liquid ejected by the explosion-proof valve can splash and contact the output electrode of the battery pack, and the high-temperature liquid is usually electrolyte in the battery, is high in temperature and corrosive, easily melts and corrodes an insulating layer on the surface of the output electrode of the battery pack, and causes the problems of poor short circuit and the like due to failure of the insulating layer.

SUMMERY OF THE UTILITY MODEL

It is a primary object of the present invention to overcome at least one of the above-mentioned drawbacks of the prior art and to provide a battery device that can avoid the explosion-proof valve from contacting the output electrode of the battery pack in a jet manner.

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

according to an aspect of the present invention, there is provided a battery device, including a battery pack and a battery pack output electrode, wherein the battery pack includes a plurality of batteries arranged along a first direction, the batteries have two first sides spaced apart along the first direction and perpendicular to the first direction, respectively, and the battery pack output electrode is located on a first side of the battery located at an end along the first direction, facing away from the other batteries; the first side surface is provided with a plurality of corner parts, the battery pack output pole is positioned at one corner part, and the explosion-proof valve of the battery is arranged at the other corner part.

According to the above technical scheme, the utility model provides a battery device's advantage lies in with positive effect:

the utility model provides a battery device includes group battery and group battery output pole, and the group battery includes a plurality of batteries, and group battery output pole is located the first side that the battery was provided with explosion-proof valve, and first side has a plurality of corner portions, and group battery output pole and explosion-proof valve are located different corner portions respectively. Through the structure design, the utility model discloses high temperature liquid contact group battery output pole when can avoiding explosion-proof valve pressure release jet flow avoids the group battery output pole to produce the bad scheduling problem of short circuit, improves battery device's security performance.

Drawings

The various objects, features and advantages of the present invention will become more apparent from the following detailed description of the preferred embodiments of the invention, when considered in conjunction with the accompanying drawings. The drawings are merely exemplary of the invention and are not necessarily to scale. In the drawings, like reference characters designate the same or similar parts throughout the different views. Wherein:

fig. 1 is a schematic perspective view showing a partial structure of a battery device according to an exemplary embodiment;

fig. 2 is an enlarged schematic view of a portion a in fig. 1;

FIG. 3 is a schematic perspective view of a portion of the structure of FIG. 1;

FIG. 4 is a schematic plan view of FIG. 3;

fig. 5 is a perspective view illustrating a combined structure of the end bus bar and the output pole of the battery pack in fig. 3.

The reference numerals are explained below:

100. a battery;

103. a first side;

1031. a corner portion;

110. an explosion-proof valve;

120. a liquid injection hole assembly;

200. a battery output pole;

210. a first part;

220. a second section;

300. a bus bar;

301. an end bus bar;

400. an end plate;

410. an avoidance part;

x. a first direction;

y. a second direction.

Detailed Description

Exemplary embodiments that embody features and advantages of the invention are described in detail below. It is to be understood that the invention is capable of other and different embodiments and its several details are capable of modification without departing from the scope of the invention, and that the description and drawings are to be regarded as illustrative in nature and not as restrictive.

In the following description of various exemplary embodiments of the invention, 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 invention 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 invention. Moreover, although the terms "over," "between," "within," and the like may be used in this specification to describe various example features and elements of the invention, these terms are used herein for convenience only, e.g., in accordance with the orientation of the examples described in the figures. Nothing in this specification should be construed as requiring a specific three dimensional orientation of structures in order to fall within the scope of the invention.

Referring to fig. 1, a schematic perspective view of a partial structure of a battery device is representatively shown, in which a perspective structure of a battery pack of the battery device is specifically shown. In this exemplary embodiment, the battery device provided by the present invention is explained by taking an on-vehicle battery as an example. It will be readily appreciated by those skilled in the art that various modifications, additions, substitutions, deletions, or other changes may be made to the embodiments described below in order to adapt the inventive arrangements to other types of battery devices, and still fall within the scope of the principles of the inventive arrangements.

As shown in fig. 1, in one embodiment of the present invention, the battery device includes a multi-battery pack and a battery pack output electrode 200. Referring to fig. 2 to 5 in combination, fig. 2 representatively illustrates an enlarged schematic view of portion a of fig. 1; fig. 3 is a perspective view typically illustrating a partial structure of fig. 1, in which a combined structure of one battery 100, an end bus bar 301, and a battery output pole 200 is specifically illustrated; the plan view of fig. 3 is representatively illustrated in fig. 4;

a perspective view of a combined structure of the end bus bar 301 and the stack output pole 200 in fig. 3 is representatively illustrated in fig. 5. The structure, connection mode and functional relationship of the main components of the battery device provided by the present invention will be described in detail below with reference to the above drawings.

As shown in fig. 1 to 4, in an embodiment of the present invention, the battery pack includes a plurality of batteries 100 arranged along a first direction X, and another direction perpendicular to the first direction X is defined as a second direction Y. The battery 100 has two first side surfaces 103 spaced apart from each other along the first direction X and perpendicular to the first direction X, and the battery pack output electrode 200 is located on the first side surface 103 of the battery 100 at the end along the first direction X, facing away from the other batteries 100. In addition, the first side surface 103 of the battery 100 may be substantially rectangular (for example, the corner portions 1031 may have a round corner structure) and have four corner portions 1031, the battery pack output pole 200 is located at one corner portion 1031 of the first side surface 103, and the explosion-proof valve 110 of the battery 100 is disposed at the other corner portion 1031, in other words, the explosion-proof valve 110 of the battery 100 and the battery pack output pole 200 correspond to different corner portions 1031 of the first side surface 103, respectively. Through the structure design, the utility model discloses high temperature liquid contact group battery output pole 200 when can avoiding explosion-proof valve 110 pressure release jet flow avoids group battery output pole 200 to produce the bad scheduling problem of short circuit, improves battery device's security performance.

The "corner 1031" referred to in the present specification means a corner portion of the first side surface 103 and a partial region adjacent to the corner portion, for example, a partial region enclosed by a dashed line in the drawings, and may be understood as a region of the first side surface other than a middle region and a side edge away from the corner portion. Therefore, the battery pack output pole 200 and the explosion-proof valve 110 are not located at the corners of the edge of the first side surface 103, and the distances between the battery pack output pole 200 and the explosion-proof valve 110 and the respective adjacent corners are not limited to be equal, but only within the ranges where the battery pack output pole 200 and the explosion-proof valve 110 are located at the two corner portions 1031, respectively. In some embodiments, the first side surface 103 may have other shapes, and the first side surface 103 may also have other numbers of corners 1031, and the number of the corners 1031 is at least two, which are respectively provided for the battery output electrode 200 and the explosion-proof valve 110, but the present embodiment is not limited thereto.

As shown in fig. 3 and 4, in an embodiment of the present invention, the height of the battery pack output electrode 200 may be higher than the height of the explosion-proof valve 110 in a direction perpendicular to a bottom plate (not shown in the drawings) of the battery device. Through the structure design, the utility model discloses can avoid the high temperature liquid that explosion-proof valve 110 erupted to fall to group battery output pole 200. In some embodiments, when the battery pack output electrode 200 and the explosion-proof valve 110 are respectively located at two ends of the first side 103 along the second direction Y, the height of the battery pack output electrode 200 may also be equal to or less than the height of the explosion-proof valve 110, which is not limited to this embodiment.

As shown in fig. 3 and 4, in an embodiment of the present invention, the battery output electrode 200 and the explosion-proof valve 110 may be located at the same end of the first side surface 103 along the second direction Y. In other words, the battery output pole 200 and the explosion-proof valve 110 may be respectively located at the upper and lower corner portions 1031 at one end of the first side surface 103 in the second direction Y.

As shown in fig. 3 and 4, based on the structural design that the battery output pole 200 and the explosion-proof valve 110 are located at the same end of the first side surface 103 along the second direction Y, in an embodiment of the present invention, the battery output pole 200 may be located above the explosion-proof valve 110. In other words, at one end of the first side surface 103 in the second direction Y, the battery pack output electrode 200 is located at the upper corner 1031, and the explosion-proof valve 110 is located at the lower corner 1031. Through the structural design, when the explosion-proof valve 110 releases pressure and sprays, the sprayed high-temperature liquid splashes downwards under the action of gravity, and the battery pack output electrode 200 is positioned above the explosion-proof valve 110, so that even if the battery pack output electrode 200 and the explosion-proof valve 110 are arranged on the same side along two directions, the high-temperature liquid can be prevented from contacting the battery pack output electrode 200, and the safety performance of the battery device is further improved.

It should be noted that, as shown in fig. 3 and 4, in an embodiment of the present invention, the battery 100 may have two explosion-proof valves 110, and the two explosion-proof valves 110 are respectively located at two corners 1031 of the first side surface 103, for example, two diagonally distributed corners 1031, that is, one explosion-proof valve 110 is located at a corner 1031 below one end of the first side surface 103 along the second direction Y, and the other explosion-proof valve 110 is located at a corner 1031 above the other end of the first side surface 103 along the second direction Y, on the basis of which, the battery output electrode 200 may be located at the same end of the first side surface 103 along the second direction Y as the one explosion-proof valve 110 of the lower corner 1031 and vertically spaced from the explosion-proof valve 110.

In some embodiments, the battery 100 may also have only one explosion-proof valve 110, and in this case, the battery pack output electrode 200 and the explosion-proof valve 110 may be located at one end of the first side surface 103 along the second direction Y, or at two ends of the first side surface 103 along the second direction Y, respectively, which is not limited to this embodiment.

As shown in fig. 3 and 4, based on the structure design that the battery output pole 200 and the explosion-proof valve 110 are located at the same end of the first side 103 along the second direction Y, and the battery output pole 200 is located above the explosion-proof valve 110, in an embodiment of the present invention, the battery 100 may be provided with the liquid injection hole assembly 120 at the first side 103, the liquid injection hole assembly 120 may be used for injecting the electrolyte into the inside of the case of the battery 100 during the production process of the battery 100, and the liquid injection hole may be blocked by the blocking member after the liquid injection is completed, and then the liquid injection hole assembly 120 may be but not limited to include the blocking member and the liquid injection hole. On this basis, the battery pack output pole 200 and the injection hole assembly 120 may be located at the same corner 1031 of the first side surface 103.

In some embodiments, the battery 100 may have two electrolyte injection hole assemblies 120, and the two electrolyte injection hole assemblies 120 are located at different corners 1031 of the first side surface 103, such as but not limited to two diagonally located corners 1031, so that the battery pack output pole 200 may be located at the same corner 1031 as one of the electrolyte injection hole assemblies 120. In some embodiments, the battery 100 may have only one pour hole assembly 120, and the embodiment is not limited thereto.

As shown in fig. 3 and 4, based on the structural design that the battery 100 has the injection hole assembly 120 and the battery pack output electrode 200 and the injection hole assembly 120 are located at the same corner portion 1031 of the first side surface 103, in an embodiment of the present invention, the battery pack output electrode 200 may be closer to the explosion-proof valve 110 than the injection hole assembly 120. Through the structure design, the utility model discloses can avoid group battery output pole 200 to shelter from annotating liquid hole subassembly 120, further optimize battery device's structural rationality.

In an embodiment of the present invention, the battery output electrode 200 may be a copper bar, and an insulating layer may be disposed outside the battery output electrode 200. Through the structure design, the utility model discloses can utilize the insulating layer to provide insulating protection for group battery output pole 200, further promote battery device's security performance, be favorable to reduce cost simultaneously.

As shown in fig. 1 to 5, in an embodiment of the present invention, the battery device further includes a plurality of busbars 300, the busbars 300 are connected between the pole assemblies of the battery 100, wherein the busbar 300 located at the end along the first direction X is an end busbar 301. On this basis, the battery output pole 200 may be fixedly connected to the end bus bar 301.

As shown in fig. 5, based on the structural design that the battery output pole 200 is fixedly connected to the end bus bar 301, in an embodiment of the present invention, the battery output pole 200 may have a first portion 210 and a second portion 220 which are integrally formed, the first portion 210 being parallel to the first side surface 103 and fixedly connected to the end bus bar 301, and the second portion 220 extending away from the battery 100 along the first direction X. Through the structure design, the utility model discloses can simplify the structure complexity of group battery output pole 200, promote structural strength, make things convenient for group battery output pole 200 simultaneously and the fixed connection of tip busbar 301 and with other outside electric connection structure's assembly.

As shown in fig. 2, in an embodiment of the present invention, the battery device further includes an end plate 400, and the end plate 400 is disposed at an end of the plurality of batteries 100 along the first direction X. On this basis, the end plate 400 may be provided with an escape portion 410, and the position of the escape portion 410 corresponds to the position of the battery pack output pole 200, so that the battery pack output pole 200 protrudes from the escape portion 410. Through the structure design, the utility model discloses can further promote battery device's rational in infrastructure.

It should be noted herein that the battery devices illustrated in the drawings and described in the present specification are only a few examples of the many types of battery devices that can employ the principles of the present invention. It should be clearly understood that the principles of the present invention are by no means 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 specification.

To sum up, the utility model provides a battery device includes group battery and group battery output pole 200, and the group battery includes a plurality of batteries 100, and group battery output pole 200 is located the first side 103 that battery 100 is provided with explosion-proof valve 110, and first side 103 is the rectangle and has four corner portions 1031, and group battery output pole 200 is located different corner portions 1031 respectively with explosion-proof valve 110. Through the structure design, the utility model discloses high temperature liquid contact group battery output pole 200 when can avoid the explosion-proof valve 110 pressure release efflux avoids group battery output pole 200 to produce the bad scheduling problem of short circuit, improves battery device's security performance.

Exemplary embodiments of a battery device according to the present invention are described and/or illustrated in detail above. Embodiments of the invention 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 step of one embodiment can also be used in combination with other components and/or steps of other embodiments. When introducing elements/components/etc. described and/or illustrated herein, the articles "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. other than the listed elements/components/etc. Furthermore, the terms "first" and "second" and the like in the claims and the description are used merely as labels, and are not numerical limitations of their objects.

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

Claims

1. A battery device, comprising a battery pack and a battery pack output electrode, wherein the battery pack comprises a plurality of batteries arranged along a first direction, the batteries have two first sides spaced along the first direction and respectively perpendicular to the first direction, and the battery pack output electrode is arranged on the first side of the battery at the end along the first direction opposite to the other batteries; the first side surface is provided with a plurality of corner parts, the battery pack output pole is positioned at one corner part, and the explosion-proof valve of the battery is arranged at the other corner part.

2. The battery device according to claim 1, wherein the height of the battery pack output pole is higher than the height of the explosion-proof valve in a direction perpendicular to a bottom plate of the battery device.

3. The battery device of claim 1, wherein the first side is rectangular and has four corners.

4. The battery device of claim 3, wherein the battery pack output pole and the explosion-proof valve are located at the same end of the first side in a second direction, the second direction being perpendicular to the first direction.

5. The battery device of claim 4, wherein the battery pack output pole is located above the explosion-proof valve.

6. The battery device of claim 5, wherein the battery is provided with a fill port assembly at the first side; wherein the battery pack output electrode and the liquid injection hole assembly are positioned at the same corner part.

7. The battery device of claim 6, wherein the battery pack output pole is closer to the explosion-proof valve than the liquid injection hole assembly.

8. The battery device according to claim 3, wherein the battery pack output electrode and the explosion-proof valve are respectively located at two ends of the first side surface opposite to each other in a second direction, and the second direction is perpendicular to the first direction.

9. The battery device according to claim 3, wherein the battery includes two of the explosion-proof valves, the two explosion-proof valves being provided at two of the corner portions, respectively, the two explosion-proof valves being arranged along a diagonal of a corresponding rectangle of the first side surface.

10. The battery device according to claim 1, wherein the battery output pole is a copper bar, and an insulating layer is disposed outside the battery output pole.

11. The battery device according to any one of claims 1 to 10, further comprising a plurality of bus bars connected between the pole assemblies of the batteries, the bus bars located at ends in the first direction being end bus bars; wherein the battery output pole is fixedly connected to the end bus bar.

12. The battery device of claim 11, wherein the battery pack output pole has a first portion and a second portion of unitary construction, the first portion being parallel to the first side and fixedly attached to the end bus bar, the second portion extending away from the battery in the first direction.

13. The battery device according to any one of claims 1 to 10, further comprising an end plate provided at an end of the plurality of cells in the first direction; the end plate is provided with an avoiding part, and the position of the avoiding part corresponds to the position of the output pole of the battery pack, so that the output pole of the battery pack can extend out of the avoiding part.