CN214313369U

CN214313369U - Battery pack

Info

Publication number: CN214313369U
Application number: CN202120597010.3U
Authority: CN
Inventors: 崔鑫; 其他发明人请求不公开姓名
Original assignee: Envision Power Technology Jiangsu Co Ltd; Envision Ruitai Power Technology Shanghai Co Ltd
Current assignee: Envision Power Technology Jiangsu Co Ltd; Envision Ruitai Power Technology Shanghai Co Ltd
Priority date: 2021-03-24
Filing date: 2021-03-24
Publication date: 2021-09-28
Anticipated expiration: 2031-03-24

Abstract

The utility model relates to a battery package technical field discloses a battery package. The battery pack comprises a box body, an explosion-proof valve and a copper bar; the battery box comprises a box body, a plurality of battery modules and a plurality of air exhaust holes, wherein the box body is internally provided with a blocking frame, a plurality of accommodating grooves are formed between the inner wall of the box body and the blocking frame, one accommodating groove is used for accommodating one battery module, the blocking frame comprises a cross beam arranged along the length direction of the box body, one side, far away from the cross beam and opposite to the cross beam, of each battery module is provided with a plurality of air exhaust holes, the box body is provided with an air exhaust channel, and the air exhaust holes are communicated with the air exhaust channel; the explosion-proof valve is arranged on one side of the box body and is communicated with the exhaust channel; the copper bars are arranged on the cross beam along the length direction of the cross beam. The beneficial effects are that: can avoid the interact between a plurality of battery module, and can realize directional exhaust function to make the security of battery package higher.

Description

Battery pack

Technical Field

The utility model relates to a battery package technical field especially relates to a battery package.

Background

A plurality of battery modules are arranged in the battery pack, so that the battery pack can meet various use requirements, and the overall space of the battery pack is saved. However, in the conventional battery pack, a plurality of battery modules are arranged in sequence, and when one of the battery modules is out of control due to heat, high-temperature and high-pressure gas generated flows to other battery modules, so that the normal use of other battery modules is influenced; the copper bars in the battery pack are arranged between the adjacent battery modules, and high-temperature high-pressure gas generated when the battery modules are out of control due to heat flows to the copper bars, so that the directional exhaust of the battery pack cannot be realized; and the temperature of the copper bar is increased in the circulation process of high-temperature and high-pressure gas to cause arc discharge, so that the whole battery pack is out of control due to heat, and the safety of the battery pack is low. The copper bars are buses and busbars, and are a rectangular circuit structure commonly used for electrical equipment.

Therefore, a battery pack is needed to solve the above problems.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a battery package can avoid influencing each other between a plurality of battery modules in the battery package, and can realize directional exhaust function to make the security of battery package higher.

To achieve the purpose, the utility model adopts the following technical proposal:

a battery pack, comprising:

the battery pack comprises a box body, wherein a plurality of battery modules are arranged in the box body, a blocking frame is arranged in the box body, so that a plurality of accommodating grooves can be formed between the inner wall of the box body and the blocking frame, one accommodating groove is used for accommodating one battery module, the blocking frame comprises a cross beam arranged along the length direction of the box body, a plurality of exhaust holes are formed in one side, far away from the cross beam, of each battery module, opposite to the cross beam, and the box body is provided with an exhaust channel, and the exhaust holes are communicated with the exhaust channels;

the explosion-proof valve is arranged on one side of the box body and is communicated with the exhaust channel;

the copper bars are arranged on the cross beam along the length direction of the cross beam.

Preferably, an air inlet is arranged on the inner wall of the box body, which is opposite to the exhaust hole, the air inlet is coaxial with the exhaust hole, and the air inlet is communicated with the exhaust channel.

Preferably, the case includes:

the side plates are oppositely arranged and are parallel to the cross beam, and each side plate is provided with the air inlet hole.

Preferably, the barrier frame is a cross-shaped barrier frame.

Preferably, the barrier frame further comprises:

the longitudinal beam and the cross beam are arranged in a vertical crossing mode.

Preferably, the exhaust passages are provided in two, and the two exhaust passages are respectively located inside the two side plates.

Preferably, the number of the explosion-proof valves is two.

Preferably, the explosion-proof valve is a vertical explosion-proof valve.

Preferably, the number of the receiving grooves is four, so as to be respectively used for placing four battery modules.

Preferably, the material of the barrier frame is mica.

The utility model has the advantages that:

the blocking frame is arranged in the box body, so that a plurality of accommodating grooves can be formed between the inner wall of the box body and the blocking frame, one accommodating groove is used for accommodating one battery module to mutually block and separate the battery modules in the box body, and when one battery module is out of control due to heat, high-temperature and high-pressure gas generated cannot pass through the blocking frame and flow to other battery modules, so that the normal use of other battery modules is ensured, and the mutual influence among a plurality of battery modules in a battery pack can be avoided; meanwhile, the separation frame comprises a cross beam placed along the length direction of the box body, copper bars in the battery pack are arranged on the cross beam along the length direction of the cross beam, a plurality of exhaust holes are formed in one side, far away from each battery module, opposite to the cross beam, of each battery module, an exhaust channel is formed in the box body, the exhaust holes are communicated with the exhaust channels, and an explosion-proof valve on one side of the box body is communicated with the exhaust channels, so that high-temperature and high-pressure gas generated when the battery modules are out of control due to heat can enter the exhaust channels only through the exhaust holes and is exhausted through the explosion-proof valve, and the directional exhaust function of the gas is realized; and can not make the high temperature high-pressure gas that produces get into the copper bar department that sets up on the crossbeam to avoid the copper bar to rise at high temperature high-pressure gas's circulation in-process temperature and take place to draw the problem of arc phenomenon, take place to draw the arc phenomenon and avoid making whole battery package thermal runaway, thereby can make the security of battery package higher.

Drawings

Fig. 1 is a partially exploded schematic view of a battery pack provided by the present invention;

fig. 2 is a schematic structural diagram of a battery pack provided by the present invention.

In the figure:

1-a box body; 11-a barrier frame; 111-a cross-beam; 112-longitudinal beams; 12-accommodating grooves; 13-an air intake; 2-a battery module; 21-exhaust hole; 3-copper bar; 4-explosion-proof valve.

Detailed Description

In order to make the technical problem solved by the present invention, the technical solution adopted by the present invention and the technical effect achieved by the present invention clearer, the technical solution of the present invention will be further explained by combining the drawings and by means of the specific implementation manner.

In the description of the present invention, unless expressly stated or limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, e.g., as meaning permanently connected, detachably connected, or integral to one another; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

In the present disclosure, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact between the first and second features, or may comprise contact between the first and second features not directly. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

In the description of the present embodiment, the terms "upper", "lower", "left", "right", and the like are used based on the orientations and positional relationships shown in the drawings only for convenience of description and simplification of operation, and do not indicate or imply that the structures or elements referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used only for descriptive purposes and are not intended to have a special meaning.

The embodiment provides a battery pack, which can prevent a plurality of battery modules in the battery pack from being influenced with each other on one hand, so as to ensure the normal use performance of the whole battery pack; on the other hand, the directional exhaust function can be realized to avoid thermal runaway of the whole battery pack, so that the safety of the battery pack is higher.

Specifically, as shown in fig. 1 and 2, the battery pack includes a case 1, a plurality of battery modules 2 are provided in the case 1, and a blocking frame 11 is provided in the case 1, so that a plurality of receiving grooves 12 can be formed between the inner wall of the case 1 and the blocking frame 11, and one receiving groove 12 is used for receiving one battery module 2, thereby blocking each battery module 2 from each other.

Through set up the separation frame 11 in box 1, so that can form a plurality of holding tanks 12 between the inner wall of box 1 and the separation frame 11, a holding tank 12 is used for placing a battery module 2, separate with each battery module 2 in the box 1 each other hindering, produced high temperature high-pressure gas can not pass the separation frame 11 and flow to other battery modules 2 department when one of them battery module 2 takes place the thermal runaway, thereby guarantee other battery modules 2's normal use, in order to avoid influencing each other between a plurality of battery modules 2 in the battery package. In this embodiment, the barrier frame 11 is made of mica. The mica has better insulating and high temperature resistant performance. In other embodiments, the isolation frame 11 may be made of other insulating and high temperature resistant materials.

Further, as shown in fig. 1 and 2, the battery pack further includes an explosion-proof valve 4 and a copper bar 3. The blocking frame 11 comprises a cross beam 111 arranged along the length direction of the box body 1, a plurality of exhaust holes 21 are formed in one side, which is far away from the cross beam 111 and is opposite to the cross beam 111, of each battery module 2, an exhaust channel is formed in the box body 1, and the exhaust holes 21 are communicated with the exhaust channel; the explosion-proof valve 4 is arranged at one side of the box body 1, and the explosion-proof valve 4 is communicated with the exhaust channel so as to discharge the gas in the exhaust channel through the explosion-proof valve 4; the copper bar 3 is disposed on the cross member 111 along the length direction of the cross member 111. In this embodiment, the explosion-proof valve 4 is a vertical explosion-proof valve.

The copper bars 3 in the battery pack are arranged on the cross beam 111 along the length direction of the cross beam 111, the side, far away from each battery module 2 and opposite to the cross beam 111, of each battery module is provided with a plurality of exhaust holes 21, the box body 1 is provided with an exhaust channel, the exhaust holes 21 are communicated with the exhaust channels, and the explosion-proof valve 4 on one side of the box body 1 is communicated with the exhaust channels, so that high-temperature and high-pressure gas generated by thermal runaway of the battery modules 2 can only enter the exhaust channels through the exhaust holes 21 and is exhausted by the explosion-proof valve 4, and directional exhaust of the gas is realized; and can not make the high temperature high-pressure gas that produces get into the copper bar 3 department of setting on crossbeam 111 to avoid copper bar 3 to rise at high temperature high-pressure gas's circulation in-process temperature and take place to draw the problem of arc phenomenon, with can avoiding copper bar 3 to take place to draw the arc phenomenon and avoid making whole battery package thermal runaway to appear, thereby can make the security of battery package higher. In this embodiment, the copper bar 3 is a structure commonly found in battery packs in the prior art, and therefore, the working principle thereof is not described in detail herein.

Specifically, as shown in fig. 1, the inner walls of two sides of the case 1 opposite to the exhaust hole 21 are provided with air inlets 13, the air inlets 13 on the same side are coaxial with the exhaust hole 21 on the same side, and the air inlets 13 are communicated with the exhaust channel, so that the gas generated by thermal runaway enters the air inlets 13 through the exhaust holes 21, enters the exhaust channel through the air inlets 13, and is finally exhausted through the explosion-proof valve 4. Wherein, box 1 includes the relative curb plate that sets up, and curb plate and crossbeam 111 are parallel to each other, all is provided with inlet port 13 on every curb plate.

In this embodiment, as shown in fig. 1, the plurality of exhaust holes 21 are linearly arranged along the length direction of the battery module 2. In other embodiments, the plurality of exhaust holes 21 may be arranged in other arrangements. The specific arrangement of the plurality of exhaust holes 21 is determined according to the specific structure of the battery module 2 and the exhaust requirement. In this embodiment, the plurality of intake holes 13 are linearly arranged along the length direction of the side plate. In other embodiments, the plurality of air inlet holes 13 can be arranged in other arrangement manners. The specific arrangement of the plurality of air intake holes 13 is determined according to the structure of the side plate and the arrangement of the air discharge holes 21.

Correspondingly, two exhaust channels are arranged and are respectively positioned at the inner sides of the two side plates; the number of the explosion-proof valves 4 is two, and the two explosion-proof valves 4 are respectively communicated with the two exhaust channels in the two side plates.

Further, as shown in fig. 1, in the present embodiment, the blocking frame 11 is a cross-shaped blocking frame 11; and the blocking frame 11 further comprises longitudinal beams 112, wherein the longitudinal beams 112 and the transverse beams 111 are arranged in a vertical crossing manner, so that four accommodating grooves 12 can be formed among the longitudinal beams 112, the transverse beams 111 and the inner walls of the box body 1, and the four accommodating grooves can be respectively used for accommodating four battery modules 2. In other embodiments, the structure of the blocking frame 11 may be other structures, and the specific arrangement structure needs to be determined according to the structure of the whole case 1 and the number of the battery modules 2.

The specific exhaust process of the battery pack in this embodiment is as follows: first, when thermal runaway occurs in any one of the battery modules 2 in the battery pack: the battery module 2 can generate a large amount of high-temperature high-pressure gas, and the high-temperature high-pressure gas cannot flow into other battery modules 2 due to the obstruction of the obstruction frame 11; then, the high-temperature high-pressure gas can only be discharged from the exhaust hole 21, enters the air inlet hole 13, enters the exhaust channel in the side plate through the air inlet hole 13, finally enters the explosion-proof valve 4, and is discharged through the explosion-proof valve 4, so that the directional discharge of the high-temperature high-pressure gas is realized, the proper temperature and pressure in the battery pack are ensured, and the whole directional discharge process of the high-temperature high-pressure gas is completed. The discharge path of the high-temperature and high-pressure gas is shown by an arrow a in fig. 2.

Wherein, because the gaseous exhaust hole 21 directional discharge of a large amount of high temperature high pressure that produces can only pass through battery module 2, can not flow to the 3 departments of copper bar on crossbeam 111 to can avoid copper bar 3 to rise and take place to draw the problem of arc phenomenon at the gaseous circulation in-process temperature of high temperature high pressure, with can avoid copper bar 3 to take place to draw the arc phenomenon and avoid making whole battery package thermal runaway, thereby can make the security of battery package higher.

The above description is only for the preferred embodiment of the present invention, and for those skilled in the art, there are variations on the detailed description and the application scope according to the idea of the present invention, and the content of the description should not be construed as a limitation to the present invention.

Claims

1. A battery pack, comprising:

the battery pack comprises a box body (1), wherein a plurality of battery modules (2) are arranged in the box body (1), a blocking frame (11) is arranged in the box body (1), so that a plurality of accommodating grooves (12) can be formed between the inner wall of the box body (1) and the blocking frame (11), one accommodating groove (12) is used for accommodating one battery module (2), the blocking frame (11) comprises a cross beam (111) which is arranged along the length direction of the box body (1), one side, which is far away from the cross beam (111) and is opposite to the cross beam (111), of each battery module (2) is provided with a plurality of exhaust holes (21), an exhaust channel is arranged on the box body (1), and the exhaust holes (21) are communicated with the exhaust channel;

the explosion-proof valve (4) is arranged on one side of the box body (1), and the explosion-proof valve (4) is communicated with the exhaust channel;

copper bars (3) arranged on the cross beam (111) along the length direction of the cross beam (111).

2. The battery pack according to claim 1, wherein an air inlet hole (13) is provided on an inner wall of the case (1) opposite to the air outlet hole (21), the air inlet hole (13) is coaxial with the air outlet hole (21), and the air inlet hole (13) communicates with the air outlet passage.

3. The battery pack according to claim 2, wherein the case (1) comprises:

the side plates are arranged oppositely, the side plates are parallel to the cross beam (111), and each side plate is provided with the air inlet hole (13).

4. The battery pack according to claim 1, wherein the barrier frame (11) is a cross-shaped barrier frame (11).

5. The battery pack according to claim 4, wherein the barrier frame (11) further comprises:

the longitudinal beam (112) is perpendicularly crossed with the transverse beam (111).

6. The battery pack according to claim 3, wherein there are two of the exhaust passages, and the two exhaust passages are located inside the two side plates, respectively.

7. The battery pack according to claim 1, wherein the explosion-proof valve (4) is provided in number of two.

8. The battery pack according to claim 1, wherein the explosion-proof valve (4) is a vertical type explosion-proof valve (4).

9. The battery pack according to claim 1, wherein the number of the receiving grooves (12) is four for receiving four battery modules (2), respectively.

10. The battery pack according to claim 1, wherein the material of the barrier frame (11) is mica.