Square-shell battery cell module

Abstract

A square-shell battery cell module relates to the field of battery cell modules, and comprises battery cells which are arranged in sequence; a heating film is arranged on the side surface of the battery cell; a temperature control module is arranged at the top of the heating film. By arranging NTC temperature detection higher than that of the battery cell on the heating film, the highest temperature point of the heating film is monitored in real time, and the risk to the battery cell caused by too high temperature of the heating film is thoroughly solved. And the modules are arranged in a double-row manner, so that the length of the modules is shortened, and the space of the product in the length direction is reduced. Through the mode of clamping the heating films in the middle, the number of the heating films is reduced, the heating efficiency is improved, and the electrical risk caused by the fact that the two ends of a traditional module are pasted and fall off easily is solved.

Description

Technical Field

[0001] The utility model relates to a telecommunication module, in particular to a square shell battery core module. Background Art

[0002] At present, with the vigorous promotion of new energy technologies, electric drive technology is developing rapidly. One of the core components of electric drive is the battery box for storing energy. In a low-temperature environment, it is difficult to charge the battery, and the capacity is greatly attenuated, which seriously affects the battery performance. In a high-temperature environment, the battery charging and discharging is likely to generate a lot of heat, which is easy to cause the risk of explosion, which is a huge challenge for battery thermal management. In the prior art, in order to improve the charging and discharging performance of the battery cell, the battery pack is usually heated in a low-temperature environment, that is, a dedicated heating system is set for the battery box. When the temperature of the battery box is low, the temperature control system heats the outside of the battery cell module. When the temperature of the battery box is high, the temperature control system stops the heating function. The prior art controls the temperature mostly by detecting the battery pack, which will result in that when the temperature of the monitoring point reaches the threshold, the heating system actually exceeds the threshold for heating the battery. Utility Model Content

[0003] The utility model provides a square shell battery core module, which aims to solve the technical problem that the battery heating process cannot be accurately controlled in the prior art.

[0004] The present application provides a square shell battery cell module, comprising a plurality of battery cells; the plurality of battery cells are arranged in a rectangular structure, and two adjacent battery cells are connected in series; the battery cells are arranged in multiple rows; a heating film is mounted between the multiple rows of battery cells, and a temperature control module is provided on the top of the heating film; the position of the temperature control module (8) is higher than the top of the rectangular structure;

[0005] The rectangular structure is fixed by a limiting belt and a module bracket is arranged on the top of the rectangular structure. A plurality of blind grooves are arranged at the bottom of the module bracket, and the positions of the blind grooves are adapted to the temperature control module; the module bracket (1) is buckled with the upper surface of the rectangular structure.

[0006] Further optimization is that an aerogel felt (5) is provided between two adjacent battery cells.

[0007] Further optimization is that the aerogel felt is glass fiber.

[0008] Further optimization is that end plates are provided on two opposite sides of the rectangular structure, and the end plates are fixed to the rectangular structure by limiting belts.

[0009] Further optimization is that a limiting groove is provided on the end plate for installing the limiting belt.

[0010] Beneficial effects of the utility model:

[0011] The utility model provides a square shell battery cell module, which monitors the highest temperature point of the heating film in real time by arranging an NTC temperature detection device higher than the battery cell on the heating film, and completely solves the risk of the battery cell caused by the excessively high temperature of the heating film.

[0012] The utility model provides a square shell electric core module. The modules are arranged in double rows, thereby shortening the module length and reducing the space of the product in the length direction.

[0013] The utility model provides a square shell battery core module, which reduces the number of heating films and improves heating efficiency by sandwiching the heating films in the middle, and solves the electrical risks caused by the easy falling of the two ends of the traditional module.

[0014] The utility model provides a square shell battery cell module, in which the battery cells are separated by aerogel, thereby solving the risk of heat spread caused by thermal runaway.

[0015] The utility model provides a square shell battery core module, which utilizes the compressibility of the glass fiber matrix in the aerogel to reserve space for the battery core to expand. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a structural schematic diagram of a square shell battery cell module described in the utility model;

[0017] Figure 2 This is an exploded view of a square shell battery cell module according to Example 2 of the utility model;

[0018] Figure 3 This is a schematic diagram of the heating film structure of a telecommunication module according to Embodiment 2 of the present utility model;

[0019] Among them: 1-module bracket, 2-limiting belt, 3-heating film, 4-end plate, 5-aerogel felt, 6-battery cell, 8-temperature control module, 9-power control module. DETAILED DESCRIPTION

[0020] In the description of the present application, it should be understood that the terms "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0021] In the description of the present application, it should be understood that the terms "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0022] In the description of this application, it should be understood that the terms "side", "inside", "outside", "outside", "inside" and other terms of orientation or position relationship are based on the orientation or position relationship shown in the drawings, and the terms are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on this application.

[0023] In the description of this application, the terms "installed", "inserted", "mounted", "placed", "placed", "connected", "set", "loaded", "supported", etc. should be understood in a broad sense. The terms are only for the convenience of describing this application and simplifying the description, and therefore cannot be understood as limiting this application.

[0024] Embodiment 1:

[0025] The utility model provides a square shell battery module, comprising a module bracket 1, two limiting belts 2, a heating film 3, an end plate 4, an aerogel felt 5, eight battery cells 6, an aluminum row 7, a temperature control module 8 and a power control module 9.

[0026] Eight battery cells 6 are arranged in a rectangular structure; each adjacent battery cell 6 is conductively connected by an aluminum bar 7, and the battery cell 6 is longitudinally provided with two opposite side surfaces exposing one battery cell 6 and two opposite side surfaces exposing all battery cells 6; a heating film 3 is arranged on two opposite side surfaces of the rectangular structure exposing all battery cells 6, ensuring that each battery cell 6 is heated by the heating film 6; the heating film 3 is arranged to cover each temperature control module 8 arranged on the top of the heating film 3, and the position of the temperature control module 8 is higher than the top of the rectangular structure, which is convenient for installing the battery cell 6 and monitoring the highest temperature point of the heating film 3 in real time, completely solving the risk of the battery cell 6 caused by excessive temperature of the heating film 3. The heating film 3 is also provided with a power control module 9; the power control module 9 is connected to the temperature control module to control the heating and shutting down of the heating film 3, and the power control module 9 is also connected to the battery 6 to supply power to the heating film 3; a layer of aerogel felt 5 is provided between each battery 6, and the battery cells are separated by aerogel, which solves the risk of heat spread caused by thermal runaway; the base material of the aerogel felt 5 is glass fiber, and the compressibility of the glass fiber matrix in the aerogel is utilized to reserve space for the battery cell to expand. The temperature control module is an NTC temperature control module.

[0027] The module bracket 1 serves as the top plate of the rectangular structure, and a plurality of blind grooves are provided at its bottom; each blind groove matches each aluminum row 7 and the temperature control module 8 on the top of the battery cell 6, and the module bracket 1 is installed on the upper surface of the rectangular structure; the two opposite side surfaces of the rectangular structure where the heating film 3 is not installed and one battery cell 6 is exposed are provided with an end plate 4, and the end plate 4 is provided with two PET installation grooves; the end plate 4 is fixed to the rectangular structure by two limiting belts 2 sleeved on the PET installation grooves, and the limiting belts are PET plastic steel belts.

[0028] Embodiment 2:

[0029] See also Figure 1 .The present embodiment provides a square shell battery cell module; the difference between the present embodiment and embodiment 1 is that the eight battery cells 6 are divided into two rows, the four long sides of each row of battery cells 6 are connected, and the short sides of the two rows of battery cells 6 are connected; the module length is shortened, and the space of the product in the length direction is reduced; the heating film 3 is centrally placed, arranged between the two rows of battery cells 6, and the number of heating films is reduced by sandwiching the heating film in the middle, thereby improving the heating efficiency, and solving the electrical risk caused by the easy falling of the two ends of the traditional module; reducing the use of heating film and reducing a certain cost; the heating film 3 is arranged on the side surface of the rectangular structure, and there is a certain amount of energy dissipation during heating; and the central placement of the heating film 3 can increase the heat exchange with the battery cell 6 and improve efficiency.

[0030] The embodiments of the present invention have been described above, and the above description is exemplary, not exhaustive, and is not limited to the disclosed embodiments. Many modifications and changes will be apparent to those of ordinary skill in the art without departing from the scope and spirit of the described embodiments. The selection of terms used herein is intended to best explain the principles of the embodiments, practical applications, or technical improvements in the market, or to enable other persons of ordinary skill in the art to understand the embodiments disclosed herein.

Claims

1. A square shell battery cell module, comprising a plurality of battery cells (6); characterized in that: The plurality of battery cells (6) are arranged in a rectangular structure, and two adjacent battery cells (6) are connected in series; the battery cells (6) are arranged in multiple rows; a heating film (3) is mounted between the multiple rows of battery cells (6), and a temperature control module (8) is provided on the top of the heating film (3); the temperature control module (8) is located higher than the top of the rectangular structure; The rectangular structure is fixed by a limiting belt (2) and a module bracket (1) is arranged on the top of the rectangular structure, and a plurality of blind grooves are arranged on the bottom of the module bracket (1), and the positions of the blind grooves are adapted to the temperature control module (8); the module bracket (1) is buckled with the upper surface of the rectangular structure.

2. A square shell battery cell module according to claim 1, characterized in that: An aerogel felt (5) is provided between two adjacent battery cells (6).

3. A square shell battery cell module according to claim 2, characterized in that: The aerogel felt (5) is glass fiber.

4. The square shell battery cell module according to claim 1, characterized in that: End plates (4) are arranged on two opposite sides of the rectangular structure, and the end plates (4) are fixed to the rectangular structure via limiting belts (2).

5. A square shell battery cell module according to claim 4, characterized in that: The end plate (4) is provided with a limiting groove for installing the limiting belt (2).

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