CN215732112U

CN215732112U - Battery pack

Info

Publication number: CN215732112U
Application number: CN202122221508.2U
Authority: CN
Inventors: 何亚飞; 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: 2021-09-14
Filing date: 2021-09-14
Publication date: 2022-02-01
Anticipated expiration: 2031-09-14

Abstract

The utility model relates to the technical field of battery packs and discloses a battery pack. The battery pack comprises at least one battery module, the battery module comprises a shell and an output electrode, the shell comprises an end plate, and the output electrode is inserted on the end plate; and the protection piece is made of an insulating high-temperature-resistant material, the protection piece comprises an installation part and an accommodating part connected with the installation part in a bent mode, the installation part is used for being installed on the shell, the accommodating part is located on the outer side of the end plate and abutted to the end plate, and therefore the output electrode is located in an accommodating cavity formed between the accommodating part and the end plate. The beneficial effects are that: through setting up the protector to can make the insulating high temperature resistance between output utmost point and the end plate better, so that the insulating high temperature resistance of output utmost point is better, thereby makes the security of battery package higher.

Description

Battery pack

Technical Field

The present invention relates to the field of battery pack technology, and more particularly, to a battery pack having a safety output electrode.

Background

The battery pack comprises a shell, an output electrode and a battery module, wherein the output electrode is inserted in the shell, the battery module is arranged on the inner side of the shell, and the output electrode is respectively connected with the battery module and the copper bar so as to transmit current at the output electrode to electric equipment through the copper bar.

Because the output pole is directly inserted on the end plate of the shell, the output pole is directly exposed to the outer side of the shell, and therefore, the insulating and high-temperature resistant performance between the output pole and the end plate is poor easily. When the battery core of the battery module is out of the high-temperature gas generated by thermal runaway and is discharged out of the shell, the high-temperature gas can affect the output electrode exposed outside the shell, so that the output electrode has an insulation problem, and therefore the whole battery pack has a safety problem and is low in safety.

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

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a battery pack, which has better insulating and high-temperature-resistant performance of an output electrode and higher safety.

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

a battery pack, comprising:

the battery module comprises a shell and an output electrode, wherein the shell comprises an end plate, and the output electrode is inserted on the end plate; and

the protection piece is made of insulating high-temperature-resistant materials, the protection piece comprises an installation portion and an accommodating portion connected with the installation portion in a bent mode, the installation portion is used for being installed on the shell, the accommodating portion is located on the outer side of the end plate and abutted to the end plate, and therefore the output electrode is located in an accommodating cavity formed between the accommodating portion and the end plate.

Further, the protector is disposed between the adjacent two of the battery modules and mounted to the housings of the adjacent two of the battery modules.

Further, the guard is mounted to edges of the housings of the adjacent two battery modules facing each other.

Furthermore, an insulating high-temperature-resistant layer is laid on the outer surface of the output electrode.

Further, a support member is arranged on the end plate and located at the bottom end of the accommodating portion to support the accommodating portion.

Further, a buffering foam is arranged between the supporting piece and the accommodating part.

Further, support piece includes the base and sets up the support step on base top, support the step and be located the bottom of holding portion, just the cotton setting of buffering bubble is in support on the step.

Furthermore, the supporting piece also comprises a plurality of reinforcing ribs, one ends of the reinforcing ribs are arranged on the base, and the other ends of the reinforcing ribs are arranged on the supporting steps to support the supporting steps.

Further, the guard is made of mica.

Further, the mounting portion is mounted to the top end surface of the housing by a fastener.

The utility model has the beneficial effects that:

by arranging the protection piece, the output electrode positioned outside the shell can be positioned in the accommodating cavity formed between the accommodating part and the end plate, the output electrode is prevented from being directly exposed outside the shell, and the protection piece is made of an insulating high-temperature-resistant material. In this way, can make the insulating high temperature resistance between output utmost point and the end plate better to make the insulating high temperature resistance of output utmost point better, thereby can avoid the problem that the output utmost point appears insulating under the battery module condition of going out thermal runaway, make the security of whole battery package higher.

Drawings

Fig. 1 is a schematic structural view of a battery pack provided in the present invention;

FIG. 2 is an enlarged partial schematic view at A of FIG. 1;

fig. 3 is a schematic structural diagram of the protection component provided by the utility model.

Reference numerals:

1-a shell; 11-an end plate; 12-an exhaust hole; 2-a battery module; 3-a guard; 31-a mounting portion; 32-a housing; 4-a support; 41-a base; 42-supporting a step; 6-fastening piece.

Detailed Description

In order to make the technical problems solved, the technical solutions adopted and the technical effects achieved by the present invention clearer, the technical solutions of the present invention are further described below by way of specific embodiments with reference to the accompanying drawings.

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, removably 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 meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

In the present invention, unless otherwise expressly stated or limited, "above" or "below" a first feature means that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact with each other via another feature therebetween. 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 configured and operated in a specific orientation, 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, and particularly relates to a battery pack with a safety output electrode, which can enable the insulation and high-temperature resistance of the output electrode to be good, so that the safety of the battery pack is high. Specifically, as shown in fig. 1 to 3, the battery pack includes at least one battery module 2, and the battery module 2 includes a case 1 and an output pole. Wherein, casing 1 includes end plate 11, and the output pole is inserted and is established on end plate 11, and the output pole is connected with battery module 2 and copper bar respectively to through the current transmission to consumer that the copper bar is equipped with output pole department. The protection member 3 is made of an insulating high-temperature-resistant material, the protection member 3 includes a mounting portion 31 and an accommodating portion 32 connected to the mounting portion 31 in a bent manner, the mounting portion 31 is used for being mounted on the top end surface of the housing 1, and the accommodating portion 32 is located outside the end plate 11 and is abutted against the end plate 11, so that an accommodating cavity can be formed between the inner side of the accommodating portion 32 and the outer side surface of the end plate 11, and the output electrode can be located in the accommodating cavity after passing through the end plate 11.

By providing the protection member 3, the output electrode located outside the housing 1 can be located in the accommodation cavity formed between the accommodation portion 32 and the end plate 11, the output electrode is prevented from being directly exposed to the outside, and the protection member 3 is made of an insulating high-temperature resistant material. In this way, can make the insulating high temperature resistance between output utmost point and the end plate 11 better to make the insulating high temperature resistance of output utmost point better, thereby can avoid the problem that the output utmost point appears insulating under the condition that battery module 2 goes out thermal runaway, make the security of whole battery package higher. In this embodiment, the insulating high temperature resistant material is mica, and the insulating high temperature resistant performance of mica is better. In other embodiments. And the insulating high-temperature resistant material can be made of other materials.

Wherein the protector 3 is provided between the adjacent two battery modules 2 and is mounted to the housings 1 of the adjacent two battery modules 2; and the protection member 3 is mounted to the edges of the housings 1 of the adjacent two battery modules 2 facing each other.

Furthermore, an insulating high-temperature resistant layer is laid on the outer surface of the output electrode. Through laying insulating high temperature resistant layer at the surface of output utmost point, further can increase the insulating high temperature resistance ability of output utmost point to can avoid because battery module 2 produced high-temperature gas can directly break through the output utmost point when thermal runaway, avoid damaging the output utmost point, with can protect the output utmost point betterly, make the security of battery package higher.

In this embodiment, the insulating high temperature resistant layer is formed by mica, and the insulating high temperature resistant performance of mica is better. Wherein, the mica is adhered or sprayed on the surface of the output pole to form an insulating high temperature resistant layer on the outer surface of the output pole. Specifically, the output pole is placed in an injection mold, mica is fixed on the outer surface of the output pole by a plastic part in an injection molding process, and a mica insulation high temperature resistant layer is paved on the outer surface of the output pole. In other embodiments, the insulating refractory layer may be made of other materials.

In other embodiments, an insulating high-temperature-resistant adhesive tape can be wound on the outer side of the output pole, so that the insulating high-temperature-resistant performance of the output pole can be further improved. What kind of insulating high temperature resistant structure need set up in the outside of output utmost point specifically needs to decide according to operating condition.

As shown in fig. 2, a support member 4 is provided on the end plate 11, the support member 4 being located at the bottom end of the accommodating portion 32, the support member 4 being used to place and support the accommodating portion 32. Wherein a buffer foam is arranged between the support 4 and the receiving portion 32. The impact force between the supporting member 4 and the accommodating portion 32 can be released by the buffer foam, so that the accommodating portion 32 is prevented from being damaged due to the impact force, and the accommodating portion 32 can be well protected. In other embodiments, a buffer sponge or other materials with specific buffer function may be disposed between the supporting member 4 and the accommodating portion 32.

Specifically, as shown in fig. 2, the support 4 includes a base 41 and a support step 42 provided at a top end of the base 41, the support step 42 is located at a bottom end of the accommodating portion 32, and the cushion foam is provided on the support step 42, and the support step 42 is used to place and support the accommodating portion 32. Further, the supporting member 4 further includes a plurality of reinforcing ribs, one end of each reinforcing rib is disposed on the base 41, the other end of each reinforcing rib is disposed on the supporting step 42, and the reinforcing ribs are used for supporting the supporting step 42, so that the supporting strength of the supporting step 42 can be high without increasing the weight of the supporting member 4, and the supporting step 42 can support the accommodating portion 32 stably. In this embodiment, the supporting member 4 is made of plastic, so that the supporting member 4 can be light in weight.

As shown in fig. 2, the mounting portion 31 is mounted on the top end surface of the housing 1 by the fastener 6, so that the mounting portion 31 is mounted on the top end surface of the housing 1 more stably, so that it can be ensured that the entire protection member 3 is mounted on the housing 1 more stably. In this embodiment, the fastening member 6 includes a bolt provided on the battery module 2 and capable of passing through the top end surface of the case 1 and the mounting portion 31, and a nut that is screwed onto the bolt so as to fix the mounting portion 31 to the top end surface of the case 1. In other embodiments, other fixing means may be used to fix the mounting portion 31 to the top end surface of the housing 1.

Further, as shown in fig. 1, a plurality of exhaust holes 12 are provided in the end plate 11. In this embodiment, the plurality of exhaust holes 12 are linearly arranged along the length direction of the end plate 11. In other embodiments, the exhaust holes 12 may be arranged on the end plate 11 in other ways, and the specific arrangement needs to be determined according to specific exhaust requirements.

The plurality of exhaust holes 12 are formed in the end plate 11 of the housing 1 to exhaust gas generated by thermal runaway of the battery module 2, so that safety accidents inside the battery pack are avoided, and the safety of the battery pack is further improved.

Further, a filter screen is provided in the exhaust hole 12 to filter the discharged gas. In this embodiment, the filter screen is a metal filter screen. Through set up the filter screen in exhaust hole 12 to filter by the particulate matter among the casing 1 interior exhaust high temperature gas, thereby can avoid the particulate matter in the higher gas of temperature to take place the burning and produce the phenomenon of spouting a fire in the atmosphere better, further make the security of battery package higher. Meanwhile, the problem that the environment is polluted by directly discharging particles in the gas to the atmosphere can be avoided, and the method is environment-friendly.

The above description is only a preferred embodiment of the present invention, and for those skilled in the art, the present invention should not be limited by the description of the present invention, which should be interpreted as a limitation.

Claims

1. A battery pack, comprising:

at least one battery module (2), wherein the battery module (2) comprises a shell (1) and an output electrode, the shell (1) comprises an end plate (11), and the output electrode is inserted on the end plate (11); and

the protection piece (3) is made of insulating high-temperature-resistant materials, the protection piece (3) comprises an installation portion (31) and an accommodating portion (32) connected with the installation portion (31) in a bent mode, the installation portion (31) is used for being installed to the shell (1), the accommodating portion (32) is located on the outer side of the end plate (11) and abutted to the end plate (11), and therefore the output pole is located in an accommodating cavity formed between the accommodating portion (32) and the end plate (11).

2. The battery pack according to claim 1, wherein the protector (3) is disposed between adjacent two of the battery modules (2) and is mounted to the housings (1) of the adjacent two of the battery modules (2).

3. The battery pack according to claim 2, wherein the protection member (3) is mounted to edges of the housings (1) of the adjacent two battery modules (2) that face each other.

4. The battery pack according to claim 1, wherein an insulating high temperature resistant layer is laid on an outer surface of the output electrode.

5. The battery pack according to claim 1, wherein a support member (4) is provided on the end plate (11), the support member (4) being located at a bottom end of the receiving portion (32) for supporting the receiving portion (32).

6. Battery pack according to claim 5, characterized in that a buffer foam is arranged between the support (4) and the receptacle (32).

7. The battery pack according to claim 6, wherein the support member (4) includes a base (41) and a support step (42) provided at a top end of the base (41), the support step (42) is located at a bottom end of the receiving portion (32), and the cushion foam is provided on the support step (42).

8. The battery pack according to claim 7, wherein the support member (4) further comprises a plurality of reinforcing ribs, one end of which is provided on the base (41) and the other end of which is provided on the support step (42) for supporting the support step (42).

9. The battery pack according to claim 1, wherein the protection member (3) is made of mica.

10. The battery pack according to claim 1, wherein the mounting portion (31) is mounted to the top end face of the case (1) by a fastener (6).