CN220873701U

CN220873701U - Battery cell module disassembling structure and battery pack

Info

Publication number: CN220873701U
Application number: CN202322648100.2U
Authority: CN
Inventors: 刘学文; 郑伟伟
Original assignee: Svolt Energy Technology Co Ltd
Current assignee: Svolt Energy Technology Co Ltd
Priority date: 2023-09-27
Filing date: 2023-09-27
Publication date: 2024-04-30
Anticipated expiration: 2033-09-27

Abstract

The utility model provides a battery cell module disassembling structure and a battery pack, wherein the battery cell module disassembling structure comprises a disassembling interlayer arranged between a bracket of a battery box body and a battery cell module, and the disassembling interlayer is connected with the bracket and the battery cell module through colloid bonding; the disassembling interlayer comprises a heating piece, the heating piece can be electrified to heat, and heat generated by the heating piece can heat the colloid and reduce the adhesive force of the colloid. According to the cell module disassembly structure, the heating piece is electrified and heated, so that heat of the heating piece is transferred to the colloid, the colloid is heated to reduce or destroy adhesive force, adhesive separation of the cell module and the bracket is facilitated, detachable maintenance of the cell module is realized, and the whole package rejection rate and after-sale cost are reduced.

Description

Battery cell module disassembling structure and battery pack

Technical Field

The utility model relates to the technical field of power battery manufacturing, in particular to a battery cell module disassembling structure.

The utility model also relates to a battery pack with the battery cell module disassembly structure.

Background

In the existing battery PACK scheme, CTP (i.e. Cell To PACK, short for battery-battery PACK, which is To integrate the battery directly into the battery PACK) gluing scheme is currently the most common scheme for people To simplify the design and process steps and reduce the cost.

Moreover, the current battery cell module is usually integrated with a BMS collecting slave board and the like, and the BMS collecting slave board has a certain fault rate. In addition, in order to improve the anti-extrusion performance of the box body, the frame of the box body is designed by adopting a high side beam, after the cell module is put into the box, maintenance and disassembly cannot be carried out, and once the cell module fails, the whole cell module can be scrapped, so that the after-sale cost is high.

Disclosure of utility model

In view of this, the present utility model aims to provide a disassembly structure of a battery cell module, so as to heat a colloid, and facilitate the adhesive separation and the detachable maintenance of the battery cell module.

In order to achieve the above purpose, the technical scheme of the utility model is realized as follows:

The battery cell module disassembling structure comprises a disassembling interlayer arranged between a bracket of a battery box body and a battery cell module, wherein the disassembling interlayer is connected with the bracket and the battery cell module through colloid bonding;

The disassembling interlayer comprises a heating piece, the heating piece can be electrified to heat, and heat generated by the heating piece can heat the colloid and reduce the adhesive force of the colloid.

Further, a power supply leading-out end connected with an external power supply is arranged on the heating piece.

Furthermore, the heating piece is provided with a plurality of hollowed-out holes, and the hollowed-out holes are used for filling colloid.

Further, the hollowed-out holes are round holes, elliptical holes, strip holes, square holes or other polygonal holes.

Further, the heating element adopts conductive fiber or metal heating wire.

Further, a blocking adhesive tape is arranged between the bracket and the battery cell module, and the blocking adhesive tape is positioned on one side of the heating piece.

Further, the disassembling interlayer further comprises a heat insulation sheet, and the heat insulation sheet is arranged on one side of the heating piece, which faces the bracket.

Compared with the prior art, the utility model has the following advantages:

According to the cell module disassembling structure, the disassembling interlayer is arranged between the bracket and the cell module, and the heating piece in the disassembling interlayer is electrified and heated, so that the heat of the heating piece is transferred to the colloid, the colloid is heated to reduce or destroy the adhesive force, the adhesive separation of the cell module and the bracket is facilitated, the detachable maintenance of the cell module is realized, and the whole package rejection rate and the after-sale cost are reduced.

In addition, the arrangement of the power supply leading-out end is beneficial to the electrifying connection of the heating element and an external power supply. The plurality of hollowed holes are formed in the heating piece, so that the hollowed holes can be used for filling colloid, direct bonding parts are arranged between the battery cell module and the bracket, and the bonding effect and the connection reliability between the battery cell module and the bracket are improved.

In addition, the hollowed-out holes are arranged as round holes, elliptical holes, strip holes, square holes or other polygonal holes, and have the characteristics of simple structure and convenience in design and implementation. The heating piece adopts conductive fiber or metal heating wire, and can conduct heat, thereby being beneficial to transferring the generated heat to the colloid to heat the colloid. The adhesive blocking strip can effectively prevent the overflow of the colloid. The heat insulating sheet is arranged on one side of the heating piece, which faces the bracket, and can prevent heat from being transferred to the bracket when the bracket is made of metal materials, so that the rapid heating of the colloid is facilitated.

Another object of the present utility model is to provide a battery pack in which the battery cell module disassembling structure as described above is provided.

The battery pack can be favorable for the disassembly and maintenance of the battery cell module by adopting the battery cell module disassembly structure, and can reduce the scrapping rate and the after-sale cost of the whole battery pack.

Drawings

The accompanying drawings, which are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate embodiments of the utility model and together with the description serve to explain the utility model. In the drawings:

Fig. 1 is a schematic diagram of an exploded cell module according to an embodiment of the present utility model;

Fig. 2 is a side view of an embodiment of the present utility model showing a cell module in a disassembled configuration;

FIG. 3 is an enlarged view of portion A of FIG. 2;

FIG. 4 is a schematic structural view of a state of the heating element and the bracket according to the embodiment of the utility model;

FIG. 5 is a schematic view of a heating element according to an embodiment of the present utility model;

FIG. 6 is a schematic view of another embodiment of a heating element according to the present utility model;

Reference numerals illustrate:

1. A bracket; 2. a cell module; 3. a heating member; 30. a hollowed hole; 31. a power supply outlet; 4. a heat insulating sheet; 5. a rubber blocking strip; 6. and (5) colloid.

Detailed Description

It should be noted that, without conflict, the embodiments of the present utility model and features of the embodiments may be combined with each other.

In the description of the present utility model, it should be noted that, if terms indicating an orientation or positional relationship such as "upper", "lower", "inner", "outer", etc. are presented, they are based on the orientation or positional relationship shown in the drawings, only for convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the apparatus or element to be referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," and the like, if any, are also used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

Furthermore, in the description of the present utility model, the terms "mounted," "connected," and "connected," are to be construed broadly, unless otherwise specifically defined. For example, the connection can be fixed connection, detachable connection or integrated connection; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art in combination with specific cases.

The utility model will be described in detail below with reference to the drawings in connection with embodiments.

The embodiment relates to a disassembly structure of a battery cell module 2, which can heat a colloid 6, reduce or destroy the adhesive force of the colloid 6, and is beneficial to the adhesive separation and the detachable maintenance of the battery cell module 2.

In the overall structure, as shown in fig. 1 to 4, the disassembling structure of the battery cell module 2 in this embodiment mainly includes a disassembling interlayer disposed between the bracket 1 and the battery cell module 2 of the battery box body, and the disassembling interlayer is bonded and connected with the bracket 1 and the battery cell module 2 through the colloid 6. The disassembling interlayer comprises a heating element 3, the heating element 3 can be electrified and heated, heat generated by the heating element 3 can heat the colloid 6, and the adhesive force of the colloid 6 is reduced.

At this time, through the separation layer of disassembling that sets up between bracket 1 and electric core module 2 to through carrying out the electrical heating to the heating piece 3 of disassembling in the separation layer, make the heat transfer of heating piece 3 to on the colloid 6, colloid 6 is heated and makes the adhesion power reduce or destroy, thereby do benefit to the gluey separation of electric core module 2 and bracket 1, realize electric core module 2's detachable maintenance, and can reduce whole package probability of scrapping and after-sales cost.

It should be noted that the above-mentioned glue 6 is, for example, a structural glue or a structural heat-conducting glue. The heating element 3 and the bracket 1, and the heating element 3 and the cell module 2 are connected by structural adhesive or structural heat-conducting adhesive.

In detail, as shown in fig. 1 to 4, in order to facilitate the heating element 3 to be electrically heated, in this embodiment, a power outlet 31 connected to an external power source is provided on the heating element 3. When the power supply outlet 31 is in practical implementation, it can be led out by crimping with a metal strip and extend to the outer side of the battery module, so as to facilitate the electrical connection with an external power supply.

The heating element 3 of this embodiment has a sheet-like structure, and as a preferred embodiment, the heating element 3 is made of conductive fibers or metal heating wires. The conductive fibers may be metal fibers, carbon black fibers, organic conductive fibers, and the like. It will of course be appreciated that an electric heater plate may also be used for the heating element 3, as is also possible.

As a preferred embodiment, the heating element 3 of this embodiment is provided with a plurality of hollow holes 30, and the hollow holes 30 are used for filling the colloid 6. The hollow hole 30 is arranged, so that the colloid 6 is filled in the hollow hole 30, a direct bonding part is arranged between the battery cell module 2 and the bracket 1, and the bonding effect and the connection reliability between the battery cell module 2 and the bracket 1 can be improved.

In practice, the central portions of the heating elements 3 may be arranged in parallel, as shown in fig. 5, although the central portions of the heating elements 3 may be arranged in a grid, as shown in fig. 6. The middle part is arranged in parallel or in grid shape, namely the hollow holes 30 are formed in the middle part of the heating element 3. As a preferred embodiment, the hollowed-out hole 30 may be a round hole, an elliptical hole, a strip hole, a square hole, or other polygonal holes, which has the characteristics of simple structure and convenient design and implementation.

In this embodiment, as shown in fig. 2 to 4, a blocking strip 5 is also disposed between the bracket 1 and the cell module 2, and the blocking strip 5 is located on one side of the heating element 3, that is, on the side of the heating element 3 near the end of the cell. The preferred blocking strips 5 are two arranged at intervals, and structural glue or structural heat-conducting glue is filled between the two blocking strips 5 and between the lower end face of the cell module 2 and the upper end face of the bracket 1.

In addition, when the bracket 1 is made of metal, in order to facilitate rapid heating of the colloid 6, in this embodiment, a heat insulation sheet 4 may be disposed on a side of the heating element 3 facing the bracket 1, and the heat insulation sheet 4 may be disposed to prevent heat of the heating element 3 from being transferred to the bracket 1.

It should be noted that the heat insulating sheet 4 may be disposed according to practical situations, and of course, the structure of the heat insulating sheet 4 may be the same as that of the heating element 3, that is, the same hollow hole 30 is formed in the middle, and of course, it is understood that the hollow hole 30 with a different shape may also be used. In the specific embodiment of the heat insulating sheet 4, for example, an epoxy resin heat insulating sheet 4 may be used.

In the disassembly structure of the battery cell module 2 of the embodiment, when the battery cell module is specifically used, the heating piece 3 is placed on the bracket 1, then the adhesive blocking strip 5 is fixed on one side of the heating piece on the bracket 1, then a proper amount of structural adhesive or structural heat-conducting adhesive is coated on the heating piece 3, then the battery cell module 2 is placed on the heating piece 3, and after the structural adhesive or the structural heat-conducting adhesive is solidified, the battery cell module 2 and the bracket 1 can be adhered and fixed together. When the battery cell module 2 needs to be disassembled, the power supply leading-out ends 31 at the two ends of the heating piece 3 are connected with an external power supply, and the external power supply is heated, so that the adhesive force of the structural adhesive or the heat-conducting structural adhesive is reduced or destroyed, the battery cell module 2 is separated from the bracket 1 by gluing, the disassembly and maintenance of the battery cell module 2 are realized, and the whole package rejection rate and the after-sale cost can be reduced.

In addition, the present embodiment also relates to a battery pack in which the above-described disassembly structure of the battery cell module 2 is provided.

The battery pack of the embodiment can be favorable for the detachable maintenance of the battery cell module 2 by adopting the disassembly structure of the battery cell module 2, and the scrapping rate and after-sale cost of the whole battery pack can be reduced.

The foregoing description of the preferred embodiments of the utility model is not intended to be limiting, but rather is intended to cover all modifications, equivalents, alternatives, and improvements that fall within the spirit and scope of the utility model.

Claims

1. An electricity mandrel disassembly structure, its characterized in that:

The battery cell module comprises a disassembly interlayer arranged between a bracket of a battery box body and the battery cell module, wherein the disassembly interlayer is connected with the bracket and the battery cell module through colloid bonding;

2. The cell module disassembly structure of claim 1, wherein:

the heating element is provided with a power supply leading-out end connected with an external power supply.

3. The cell module disassembly structure of claim 1, wherein:

the heating piece is provided with a plurality of hollowed-out holes, and the hollowed-out holes are used for filling colloid.

4. A cell module disassembly structure according to claim 3, wherein:

the hollowed holes are round holes, elliptical holes, strip holes, square holes or other polygonal holes.

5. The cell module disassembly structure of claim 1, wherein:

the heating piece adopts conductive fiber or metal heating wire.

6. The cell module disassembly structure of claim 1, wherein:

And a blocking adhesive tape is arranged between the bracket and the cell module and is positioned on one side of the heating piece.

7. The cell module disassembly structure according to any one of claims 1 to 6, wherein:

The disassembling interlayer further comprises a heat insulation sheet, and the heat insulation sheet is arranged on one side of the heating piece, which faces the bracket.

8. A battery pack, characterized in that:

the battery pack is provided with the battery cell module disassembly structure as claimed in any one of claims 1 to 7.