CTP power battery pack convenient to maintain

Abstract

The utility model discloses a CTP power battery pack convenient to maintain. The CTP power battery pack comprises a battery box body assembly, the battery cell stacking group is arranged on the inner side of the battery box body assembly; the heat-conducting structural adhesive is arranged between the battery box body assembly and the battery cell stacking group so as to bond and fix the battery box body assembly and the battery cell stacking group; wherein one end of the heat-conducting structural adhesive is bent upwards to form a stretching part; by arranging the heat-conducting structural adhesive, the stretching part and the battery box body assembly, the problems that in a traditional CTP scheme, battery cells need to be fixed in a box body through a large amount of adhesive, so that later-stage disassembly and assembly are inconvenient, the maintenance effect is poor, only the bottom of a battery cell stacking group is bonded, and in the maintenance process, the battery cell stacking group is not prone to being damaged are solved. And the heat-conducting structural adhesive can be pulled away from the battery cell stacking group and the battery box body assembly by pulling the stretching part, so that the battery cell stacking group can be disassembled and maintained, and the operation is simple and convenient.

Description

Technical Field

[0001] The utility model specifically relates to a CTP power battery pack which is easy to maintain. Background Art

[0002] With the rapid development of new energy vehicles, power batteries tend to be highly integrated. The CTP solution is a design in which the battery cells are directly integrated into the battery pack. However, this solution also has obvious defects, that is, a large amount of glue is needed to fix the battery cells in the box, which makes it inconvenient to disassemble and assemble later. This is a huge challenge for after-sales maintenance. As the sales scale increases, the after-sales maintenance work becomes more difficult. For this reason, we propose a CTP power battery pack that is easy to maintain. Utility Model Content

[0003] The purpose of the present utility model is to provide a CTP power battery pack that is easy to maintain, so as to solve the problems raised in the above background technology.

[0004] To achieve the above objectives, the present invention provides the following technical solutions: a CTP power battery pack that is easy to maintain, comprising:

[0005] Battery box assembly;

[0006] A battery cell stacking group is arranged inside the battery box assembly;

[0007] Thermally conductive structural adhesive, disposed between the battery box assembly and the battery cell stacking group to bond and fix the two;

[0008] Wherein, one end of the thermal conductive structural adhesive is bent upward to form a stretching portion.

[0009] This facilitates downward transfer of heat from the cell stack through the thermally conductive adhesive for heat dissipation. During later maintenance, the thermally conductive adhesive can be pulled away from between the cell stack and the battery case assembly by pulling the stretching portion, allowing for quick disassembly and maintenance of the cell stack, ensuring ease of maintenance.

[0010] Preferably, the battery cell stacking group includes a battery cell body and double-sided tape, the battery cell body and the double-sided tape are arranged side by side, and the battery cell body and the double-sided tape are alternately arranged along a long side of the battery box assembly.

[0011] It is convenient to combine and connect multiple battery cells to form a whole, and the individual battery cells can be replaced and maintained separately at a later time.

[0012] Preferably, the battery box assembly includes a box frame, a liquid cooling plate and a bottom guard plate. The bottom guard plate is detachably mounted on the lower surface of the box frame, and a liquid cooling plate is provided on the bottom guard plate. The liquid cooling plate is welded and fixed to the box frame.

[0013] It is convenient to place and install the battery cell stack group, and at the same time can ensure good heat dissipation of the battery cell stack group and reduce heat accumulation.

[0014] Preferably, a partition plate is fixed on the inner side of the box frame to divide the inner space of the box frame into accommodating grooves, and each of the accommodating grooves corresponds to each stretching portion.

[0015] It is convenient to divide multiple battery cell stacking groups, so as to ensure the heat dissipation effect at the center of the box frame. Through separation, it is also convenient to carry out separate inspection and maintenance of different battery cell stacking groups in the future, thereby improving maintenance convenience.

[0016] Preferably, there are four battery cell stacking groups, and the number of the thermal conductive structural adhesives is the same as the number of the battery cell stacking groups.

[0017] It is convenient to disassemble and maintain multiple battery cell stacking groups separately.

[0018] Preferably, the side wall of the battery box assembly is provided with a mounting hole.

[0019] It is convenient to lower the battery box assembly and install it on the car body.

[0020] Compared with the prior art, the beneficial effects of the present invention are:

[0021] This patent is provided with a thermal conductive structural adhesive, a stretching part and a battery box assembly to avoid the traditional CTP solution that requires a large amount of colloid to fix the battery cells in the box, which makes it inconvenient to disassemble and assemble later and has poor maintenance effect. This device only bonds the bottom of the battery cell stacking group. During maintenance, the thermal conductive structural adhesive can be pulled out from between the battery cell stacking group and the battery box assembly by pulling the stretching part, and then the battery cell stacking group can be disassembled and maintained. The operation is simple, which greatly improves the convenience of maintenance and increases the practicality of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a structural diagram of the utility model;

[0023] Figure 2 This is a schematic diagram of the battery cell stacking group structure of the present utility model;

[0024] Figure 3 This is a schematic diagram of the battery box assembly structure of the present utility model.

[0025] In the figure: 1. Battery cell stacking group; 101. Battery cell body; 102. Double-sided tape; 2. Thermal conductive structural adhesive; 201. Stretching part; 3. Battery case assembly; 301. Case frame; 302. Liquid cooling plate; 303. Bottom guard plate; 304. Partition plate. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0027] See also Figure 1-Figure 3 The utility model provides a technical solution: a CTP power battery pack that is easy to maintain, including:

[0028] Battery box assembly 3;

[0029] The battery cell stacking group 1 is arranged inside the battery box assembly 3;

[0030] Thermally conductive structural adhesive 2 is provided between the battery box assembly 3 and the battery cell stacking group 1 to bond and fix the two together;

[0031] One end of the thermal conductive structural adhesive 2 is bent upward to form a stretching portion 201 .

[0032] It is convenient to transfer the heat of the battery cell stacking group 1 downward through the thermal conductive structural adhesive 2 for heat dissipation. During later maintenance, the thermal conductive structural adhesive 2 can be pulled out from between the battery cell stacking group 1 and the battery box assembly 3 by pulling the stretching part 201, so that the battery cell stacking group 1 can be quickly disassembled and maintained, ensuring the convenience of maintenance.

[0033] In this embodiment, preferably, the cell stacking group 1 includes a cell body 101 and a double-sided tape 102 , the cell body 101 and the double-sided tape 102 are arranged side by side, and the cell body 101 and the double-sided tape 102 are alternately arranged along a long side of the battery box assembly 3 .

[0034] It is convenient to combine and connect multiple battery cell bodies 101 to form a whole, and the individual battery cell bodies 101 can be replaced and maintained separately at a later time.

[0035] In this embodiment, preferably, the battery box assembly 3 includes a box frame 301, a liquid cooling plate 302 and a bottom guard plate 303. The bottom guard plate 303 can be detachably installed on the lower surface of the box frame 301, and a liquid cooling plate 302 is provided on the bottom guard plate 303. The liquid cooling plate 302 is welded and fixed to the box frame 301.

[0036] It is convenient to place and install the battery cell stack group 1, and at the same time can ensure good heat dissipation of the battery cell stack group 1 and reduce heat accumulation.

[0037] In this embodiment, preferably, a partition plate 304 is fixed inside the box frame 301 to divide the internal space of the box frame 301 into accommodating grooves, and each accommodating groove corresponds to each stretching portion 201 .

[0038] It is convenient to divide multiple battery cell stacking groups 1, so as to ensure the heat dissipation effect at the center of the box frame 301. Through separation, it is also convenient to carry out separate inspection and maintenance of different battery cell stacking groups 1 in the future, thereby improving maintenance convenience.

[0039] In this embodiment, preferably, four battery cell stacking groups 1 are provided, and the number of the thermal conductive structural adhesives 2 is the same as the number of the battery cell stacking groups 1 .

[0040] It is convenient to disassemble and maintain the multiple battery cell stacking groups 1 separately.

[0041] In this embodiment, preferably, a mounting hole is provided on the side wall of the battery box assembly 3 .

[0042] It is convenient to lower the battery box assembly 3 and install it on the car body.

[0043] The working principle and usage process of the present invention are as follows: when using the thermal conductive structural adhesive 2 to fix the battery cell stacking group 1, first keep the bonding surface of the thermal conductive structural adhesive 2 clean to ensure that there is no impurities such as oil, dust, etc., and then attach the thermal conductive structural adhesive 2 to the bottom surface of the battery cell stacking group 1, place it in the battery box assembly 3, and fully bond it by pressing or other methods. When the battery module or component needs to be disassembled, just gently pull the stretching part 201 to remove the thermal conductive structural adhesive 2 from the battery cell stacking group 1 without leaving any residual adhesive.

[0044] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A CTP power battery pack that is easy to maintain, characterized in that: include: Battery box assembly (3); A battery cell stacking group (1) is arranged inside the battery box assembly (3); A heat-conductive structural adhesive (2) is arranged between the battery box assembly (3) and the battery cell stacking group (1) to bond and fix the two together; One end of the heat-conducting structural adhesive (2) is bent upward to form a stretching portion (201).

2. The CTP power battery pack with easy maintenance according to claim 1, characterized in that: The battery cell stacking group (1) comprises a battery cell body (101) and a double-sided tape (102), wherein the battery cell body (101) and the double-sided tape (102) are arranged side by side, and the battery cell body (101) and the double-sided tape (102) are alternately arranged along a long side of a battery box assembly (3).

3. The CTP power battery pack with easy maintenance according to claim 1, characterized in that: The battery box assembly (3) comprises a box frame (301), a liquid cooling plate (302) and a bottom guard plate (303); the bottom guard plate (303) is detachably mounted on the lower surface of the box frame (301); the liquid cooling plate (302) is disposed on the bottom guard plate (303); and the liquid cooling plate (302) is fixed to the box frame (301) by welding.

4. The CTP power battery pack with easy maintenance according to claim 3, characterized in that: A partition plate (304) is fixed on the inner side of the box frame (301) to separate the inner space of the box frame (301) into accommodating grooves, and each of the accommodating grooves corresponds to each stretching portion (201).

5. The CTP power battery pack with easy maintenance according to claim 1, characterized in that: The battery cell stacking groups (1) are provided with four groups, and the number of the thermal conductive structural adhesives (2) is the same as the number of the battery cell stacking groups (1).

6. The CTP power battery pack with easy maintenance according to claim 1, characterized in that: The side wall of the battery box assembly (3) is provided with a mounting hole.

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