CTP battery module

Abstract

The utility model provides a CTP battery module which comprises a battery box, a battery cell stack is arranged in the battery box, a plurality of limiting plates are arranged in the battery box, a containing cavity is separated by the limiting plates, the battery cell stack is located in the containing cavity, the battery cell stack comprises a plurality of single battery cells, and the single battery cells are arranged in the containing cavity. Heat-conducting silica gel pads are arranged among the plurality of single battery cells, and mica rows are arranged between the adjacent battery cell stacks; according to the utility model, the plurality of accommodating cavities are separated by the limiting plates, and each accommodating cavity can be used for accommodating more cell stacks and effectively separating the cell stacks at the same time, and can be matched with the heat-conducting silica gel pad and the mica row to play a role in insulating and cooling, so that the temperature in the battery box is good in adjusting effect, the phenomena such as fire caused by high temperature in the battery box are not easy to cause, and the service life of the battery box is prolonged. And the safety is high.

Description

Technical Field

[0001] The utility model relates to the field of lithium-ion batteries, in particular to a CTP battery module. Background Art

[0002] A battery box is a group of batteries consisting of several single cells, a box body, a battery management system and related mounting structural parts. It has a standard battery box structure, battery box monitoring equipment, battery box connectors, battery box environmental control equipment, etc. Existing battery boxes usually have an integrated cooling and heat dissipation structure, and the interior of the battery box is usually composed of multiple modules.

[0003] However, the mainstream liquid-cooled battery boxes on the market currently use a type in which the small bottom surface of the module battery cell is in contact with the stamped liquid cooling plate. This type of liquid-cooled battery box only takes away heat from the bottom surface of the battery cell because the contact area of ​​the battery cell is relatively small. In addition, the part of the battery cell that generates the most heat is at the upper pole of the battery cell, so the heat dissipation effect is very limited, and the temperature regulation inside the battery box is also limited. The battery box is prone to fire due to high temperature, and the safety is poor.

[0004] To this end, we propose a CTP battery module to solve the above problems. Utility Model Content

[0005] The utility model aims to solve the shortcomings in the prior art and proposes a CTP battery module.

[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0007] A CTP battery module comprises a battery box, wherein a battery cell stack is arranged in the battery box, wherein a plurality of limit plates are arranged in the battery box, wherein the plurality of limit plates separate an accommodating cavity, wherein the battery cell stack is located in the accommodating cavity, wherein the battery cell stack comprises a plurality of single battery cells, wherein a thermal conductive silicone pad is arranged between the plurality of single battery cells, and a mica row is arranged between adjacent battery cell stacks.

[0008] Further preferably, the spacings between the plurality of limit plates are consistent.

[0009] Further preferably, the size of the accommodating cavity is consistent with the size of the battery cell stack.

[0010] Further preferably, the mica row and the thermally conductive silicone pad are both fixed to the single battery cell by means of adhesive.

[0011] Further preferably, the interior of the limiting plate is hollow.

[0012] Further preferably, the surfaces of the plurality of limit plates are rough surfaces, and the longitudinal heights of the plurality of limit plates are consistent with the longitudinal heights of the plurality of single battery cells.

[0013] Compared with the prior art, the beneficial effects of the utility model are:

[0014] In the utility model, a plurality of accommodating cavities are separated by limiting plates, and a single accommodating cavity can hold more battery cell stacks and can effectively separate the battery cell stacks, and can cooperate with the thermal conductive silicone pad and the mica row to play the role of insulation and cooling, thereby having a good temperature regulation effect in the battery box, and the battery box is not prone to fire due to high temperature, and has strong safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 A schematic diagram of the battery box structure provided by the utility model;

[0016] Figure 2 Schematic diagram of the explosion structure of the battery stack.

[0017] In the figure: 1. Battery box; 2. Limiting plate; 3. Accommodating cavity; 4. Battery cell stack; 5. Single battery cell; 6. Mica row; 7. Thermal conductive silicone pad. DETAILED DESCRIPTION

[0018] Reference Figure 1 , 2 A CTP battery module includes a battery box 1, a battery cell stack 4 is arranged in the battery box 1, a plurality of limiting plates 2 are arranged in the battery box 1, the limiting plates 2 can limit and fasten the battery cell stack 4 on both sides, the plurality of limiting plates 2 separate the accommodating cavity 3, the battery cell stack 4 is located in the accommodating cavity 3, the accommodating cavity 3 can be adjusted by adjusting the spacing of the limiting plates 2. The battery cell stack 4 includes a plurality of single battery cells 5, a thermal conductive silicone pad 7 is arranged between the plurality of single battery cells 5, and a mica row 6 is arranged between adjacent battery cell stacks 4;

[0019] In the utility model, a plurality of accommodating cavities 3 are separated by a limiting plate 2. A single accommodating cavity 3 can accommodate more battery cell stacks 4 and can effectively separate the battery cell stacks 4. It can cooperate with the thermal conductive silicone pad 7 and the mica row 6 to play the role of insulation and cooling, thereby having a good temperature regulation effect in the battery box 1. It is not easy for the battery box 1 to cause fire due to high temperature, and the safety is strong.

[0020] The spacing between multiple limit plates 2 is consistent, so that the size of each accommodating cavity 3 is consistent. The battery cell stack 4 is placed in the accommodating cavity 3, and the heat generation is more uniform, so it is not easy for the temperature in the middle of the battery box 1 to be too high or the temperature at the edge of the battery box 1 to be too low, which can effectively prevent the battery box 1 from thermal runaway.

[0021] The size of the accommodating cavity 3 is consistent with the size of the battery stack 4, so that the battery stack 4 can be stably placed and fixed in the accommodating cavity 3, the battery stack 4 will not shake in the accommodating cavity 3, and the battery stack 4 is not easily damaged due to shaking.

[0022] The mica row 6 and the thermally conductive silicone pad 7 are both fixed to the single battery cell 5 by means of gluing. The gluing method can make the thermally conductive structural adhesive and the mica row 6 more stably glued and fixed to the single battery cell 5. At the same time, the thermally conductive structural adhesive can improve the heat dissipation performance in the battery box 1 and effectively prevent thermal runaway.

[0023] The interior of the limit plate 2 is hollow, which can effectively reduce the weight of the battery box 1, and coolant for heat dissipation can be poured into the limit plate 2, which can effectively conduct heat and dissipate heat while improving the strength of the limit plate 2, and can effectively prevent thermal runaway.

[0024] The surfaces of the multiple limiting plates 2 are rough, which can increase the friction between the single battery cells 5 placed in the accommodating cavity 3 and the contact surface of the limiting plates 2, and can effectively limit the battery stack 4. The longitudinal height of the multiple limiting plates 2 is consistent with the longitudinal height of the multiple single battery cells 5, so that the side of the single battery cell 5 will not expose the limiting plates 2, is not easily worn due to external contact, and can effectively improve the service life of the battery stack 4 formed by the single battery cells 5.

Claims

1. A CTP battery module, comprising a battery box, wherein a battery cell stack is arranged in the battery box, characterized in that: A plurality of limit plates are arranged in the battery box, and the plurality of limit plates separate a containing cavity. The battery cell stack is located in the containing cavity. The battery cell stack comprises a plurality of single battery cells. Thermal conductive silicone pads are arranged between the plurality of single battery cells, and mica bars are arranged between adjacent battery cell stacks.

2. A CTP battery module according to claim 1, characterized in that: The spacings between the plurality of limiting plates are consistent.

3. A CTP battery module according to claim 1, characterized in that: The size of the accommodating cavity is consistent with the size of the battery cell stack.

4. A CTP battery module according to claim 1, characterized in that: The mica row and the thermally conductive silicone pad are both fixed to the single battery cell by means of adhesive.

5. A CTP battery module according to claim 1, characterized in that: The interior of the limiting plate is hollow.

6. A CTP battery module according to claim 1, characterized in that: The surfaces of the plurality of limit plates are rough surfaces, and the longitudinal heights of the plurality of limit plates are consistent with the longitudinal heights of the plurality of single battery cells.

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