CN215731903U

CN215731903U - Lithium cell group heat radiation structure

Info

Publication number: CN215731903U
Application number: CN202122188532.0U
Authority: CN
Inventors: 袁海船
Original assignee: Shandong Tianhan New Energy Technology Co ltd
Current assignee: Shandong Tianhan New Energy Technology Co ltd
Priority date: 2021-09-10
Filing date: 2021-09-10
Publication date: 2022-02-01
Anticipated expiration: 2031-09-10

Abstract

The utility model relates to the technical field of lithium batteries and discloses a heat dissipation structure of a lithium battery pack. Comprises a metal shell, and the heat dissipation surface of the shell is of a planar structure. The lithium cell is placed on the heat dissipation aluminum plate who pastes the heat conduction silica gel pad, and heat dissipation aluminum plate accomplishes the demand that the lithium cell reduced the service temperature on conducting the group battery heat to metal casing through the heat conduction silica gel pad. The utility model effectively solves the problems of non-uniform temperature, high temperature and the like of the lithium battery in the charging and discharging processes.

Description

Lithium cell group heat radiation structure

Technical Field

The utility model relates to the technical field of lithium batteries, in particular to a heat dissipation structure of a lithium battery pack.

Background

"lithium cell" can produce the heat as new forms of energy field commonly used energy material, its charge-discharge in-process, and the heat accumulation causes the temperature of group battery to rise gradually, and the high temperature can reduce the electrical property and the life of electric core, and this just makes the lithium cell in design, production use, need conduct the group battery outside with the heat that produces, reduces the inside temperature of group battery.

The traditional lithium battery heat dissipation is divided into water cooling heat dissipation, air cooling heat dissipation and natural cooling, and the water cooling heat dissipation has the defects of large occupied space, relatively high cost and large processing difficulty; the air-cooled heat dissipation has the defects that the dust pollution in the battery pack can be caused, and the service life of components in the battery pack is influenced; the natural cooling is a state without thermal management, which may cause the internal temperature of the battery pack to be non-uniform and over-high.

Disclosure of Invention

The present invention is directed to a heat dissipation structure of a lithium battery pack, so as to solve the problems mentioned in the background art.

In order to achieve the purpose, the utility model provides the following technical scheme: the utility model provides a lithium cell group heat radiation structure, device mainly are applicable to cylindrical electric core heat dissipation, wholly use fire-resistant grade high temperature resistant material. The two sides and the upper part of the battery pack are in through design and are used for welding and wiring a signal wire and a power wire harness of the battery pack, and the bottom of the battery pack is of the heat dissipation structure, so that the heat management requirement of the lithium battery in the charging and discharging process is met.

Preferably, the fireproof-grade high-temperature-resistant ABS plastic support is fixed with the lithium ion cylindrical electric core.

Preferably, the heat dissipation silica gel pad is placed between cylindrical electric core of lithium ion and the L type heat dissipation aluminum plate between the electric core module, and the effectual heat that produces electric core conducts on the L type heat dissipation aluminum plate.

Preferably, group battery bottom silica gel pad is placed between L type heat dissipation aluminum plate and metal casing, effectively with the heat conduction of L type heat dissipation aluminum plate conduction to the metal casing on, realize the heat transfer between group battery to the casing.

Preferably, the fireproof high-temperature-resistant insulating sheet is placed between the battery cell module and the L-shaped heat dissipation aluminum plate, and is used for insulation between the battery cell module and the L-shaped heat dissipation aluminum plate.

The working principle is as follows: on electric core module passed through heat dissipation silica gel pad between electric core module conducted L type heat dissipation aluminum plate with the heat, a plurality of L type heat dissipation aluminum plate accomplished the lithium cell on the metal casing heat conduction demand of charging and discharging the in-process through group battery bottom silica gel pad, made the inside temperature of group battery more even, effectively reduced the inside bulk temperature of group battery.

Advantageous effects

Compared with the prior art, the utility model provides a lithium battery pack heat dissipation structure, which has the following beneficial effects:

1. according to the utility model, the internal temperature of the battery pack is more uniform, the electrical property of the battery cell is more stable, and the consistency is improved.

2. The utility model effectively conducts the heat generated by the battery pack to the metal shell and reduces the internal temperature of the battery pack.

Drawings

FIG. 1 is a schematic structural view of the present invention;

in the figure: 1 cylindrical electric core of lithium ion, 2 high temperature resistant ABS plastic supports of fire prevention level, 3 electric core module heat dissipation silica gel pads, 4L type heat dissipation aluminum plate, 5 group battery bottom silica gel pads, 6 metal casing, 7 high temperature resistant insulating pieces of fire prevention level.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in further detail with reference to fig. 1 and an embodiment.

Referring to fig. 1, a heat dissipation structure of a lithium battery pack includes a cylindrical lithium ion battery cell 1, a fire-class high-temperature resistant ABS plastic support 2, a heat dissipation silica gel pad between battery cell modules 3, a 4L-shaped heat dissipation aluminum plate, a battery pack bottom silica gel pad 5, a metal shell 6, and a fire-class high-temperature resistant insulation sheet 7. When the lithium ion battery pack is used, the lithium ion cylindrical battery cell is combined by the fireproof high-temperature resistant ABS plastic support, a combined structure of a battery cell inter-module heat dissipation silica gel pad-an L-shaped heat dissipation aluminum plate-battery cell inter-module heat dissipation silica gel pad is arranged between two adjacent battery cell modules, and the battery pack bottom silica gel pad is arranged at the bottom of each battery cell module, so that the heat conduction requirement of the lithium battery from the battery cell to the shell is met, the internal temperature of the lithium battery pack is more uniform, and the temperature is reduced.

The present embodiment is only for explaining the present invention, and it is not limited to the present invention, and the skilled person in the same industry can make modifications of the present embodiment without inventive contribution as required after reading the present specification, but all are protected by patent law within the scope of the claims of the present invention.

Claims

1. The utility model provides a lithium cell group heat radiation structure, includes cylindrical electric core of lithium ion (1), fire-resistant grade high temperature resistant ABS plastic support (2), heat dissipation silica gel pad (3) between electric core module, L type heat dissipation aluminum plate (4), group battery bottom silica gel pad (5), metal casing (6), fire-resistant grade high temperature resistant insulating piece (7).

2. The lithium battery pack heat dissipation structure of claim 1, wherein: the lithium ion cylindrical battery cell (1) is combined and fixed with the fireproof high-temperature-resistant ABS plastic support (2).

3. The lithium battery pack heat dissipation structure of claim 1, wherein: the positive and negative electrode surfaces of the lithium ion cylindrical battery cell (1) are tightly attached to the battery cell module through a fastening structure outside the shell, wherein the heat dissipation silica gel pad (3) is arranged between the positive and negative electrode surfaces.

4. The lithium battery pack heat dissipation structure of claim 1, wherein: and the battery cell module is tightly attached to the radiating silica gel pad (3) and the L-shaped radiating aluminum plate (4) through a fastening structure outside the shell.

5. The lithium battery pack heat dissipation structure of claim 1, wherein: the battery pack bottom silica gel pad (5) is tightly attached to the L-shaped radiating aluminum plate (4) through a fastening structure outside the shell.

6. The lithium battery pack heat dissipation structure of claim 1, wherein: the metal shell (6) is of a plane structure and is tightly attached to the silica gel pad (5) at the bottom of the battery pack through a fastening structure outside the shell.

7. The lithium battery pack heat dissipation structure of claim 1, wherein: and a fireproof high-temperature-resistant insulating sheet (7) is arranged between the bottom of the lithium ion cylindrical battery cell (1) and the L-shaped heat dissipation aluminum plate (4).