CN-120728090-B - Self-cooling type automobile lithium battery structure

Abstract

The invention discloses a self-cooling type automobile lithium battery structure, which relates to the technical field of automobile lithium batteries. The problem that heat dissipation is not uniform enough when the conventional square lithium battery is used is solved. Including the casing, the casing is provided with the standing groove, the rigid coupling has the group battery in the standing groove, the casing is provided with the cooling tank of interval distribution, the casing rigid coupling has two intercommunication shells, all the cooling tank all with two the intercommunication shell intercommunication, two the intercommunication shell respectively with cooling cycle mechanism's water inlet and delivery port intercommunication, different the width of cooling tank by the middle part of casing reduces to both sides in proper order. According to the invention, the cooling grooves distributed at intervals are used for radiating the battery pack, and the widths of the cooling grooves distributed at intervals are sequentially reduced from the middle part to two sides of the shell, so that the radiating effect on the heat accumulation part in the middle part of the battery pack is enhanced, the temperature of each part of the battery pack is more uniform, and the cooling efficiency of cooling water is improved.

Inventors

• SONG ZEBIN
• YANG QINGXIN
• WANG ZHIWEI

Assignees

• 长虹三杰新能源有限公司

Dates

Publication Date

20260508

Application Date

20250704

Claims (4)

1. 1. The self-cooling type automobile lithium battery structure is characterized by comprising a shell (1), wherein the shell (1) is provided with a placing groove (101), a battery pack (2) is fixedly connected in the placing groove (101), the shell (1) is provided with cooling grooves (102) which are distributed at intervals, the shell (1) is fixedly connected with two communicating shells (3), all the cooling grooves (102) are communicated with the two communicating shells (3), the two communicating shells (3) are respectively communicated with a water inlet and a water outlet of a cooling circulation mechanism, and the widths of the different cooling grooves (102) are sequentially reduced from the middle part to two sides of the shell (1); The shell (1) is provided with a mounting groove (103), swing plates (4) which are distributed at intervals are rotationally connected in the mounting groove (103), and all the swing plates (4) are fixedly connected with an anti-stab plate (5) together; the swing plate (4) is slidably connected with limit posts (6), springs are arranged between the limit posts (6) and the adjacent swing plates (4), grooves which are distributed at intervals are formed in the shell (1), the number of the grooves on the shell (1) is consistent with that of the limit posts (6), and the limit posts (6) are inserted into the adjacent grooves to limit the adjacent swing plates (4); The shell (1) is rotationally connected with a guide plate (7), the shell (1) is fixedly connected with an electric push rod (8), and the telescopic end of the electric push rod (8) is rotationally and slidingly connected with the guide plate (7); the shell (1) is fixedly connected with radiating plates (9) which are distributed at intervals, and the radiating plates (9) are positioned in the mounting groove (103); the heat dissipation plates (9) positioned between two adjacent swinging plates (4) are fixedly connected with a connecting plate (10) together; the heat dissipation plate (9) and the connecting plate (10) are both made of heat conduction materials, and the swinging plate (4) is made of hard materials.
2. 2. A self-cooling automotive lithium battery cell according to claim 1, characterized in that the side of the stab-resistant plate (5) facing away from the housing (1) is coated with a friction material.
3. 3. The self-cooling lithium battery structure for an automobile according to claim 1, wherein the guide plate (7) is inclined for guiding wind flow generated during running of the automobile.
4. 4. A self-cooling lithium battery structure for an automobile according to claim 1, wherein the swinging plates (4) are divided into a plurality of groups, two swinging plates (4) are arranged in each group, the number of the groups of the swinging plates (4) is equal to that of the cooling grooves (102), and the intervals between the two swinging plates (4) in different groups are sequentially reduced from the middle part to two sides of the shell (1).

Description

Self-cooling type automobile lithium battery structure Technical Field The invention relates to the technical field of automobile lithium batteries, in particular to a self-cooling type automobile lithium battery structure. Background The lithium battery is a chargeable battery taking lithium element as a key active component, the working principle of the lithium battery is to store and release electric energy by means of reversible migration (intercalation and deintercalation) of lithium ions between an anode and a cathode, and the lithium battery has the core characteristics of high energy density, low self-discharge rate, no memory effect, relatively high voltage and chargeable property, and is classified into a cylindrical battery, a square battery and a soft package battery according to the appearance, wherein the square battery is the most commonly used in electric automobiles. When the lithium battery is used as an electric automobile power source, a large amount of heat can be generated due to rapid discharge, heat dissipation is needed to be conducted on the lithium battery at the moment, otherwise, the lithium battery has a thermal runaway risk, so that the lithium battery fires and even explodes. Disclosure of Invention In order to overcome the disadvantages mentioned in the background art, the present invention provides a self-cooling lithium battery structure for an automobile. The technical scheme is that the self-cooling type automobile lithium battery structure comprises a shell, wherein the shell is provided with a placing groove, a battery pack is fixedly connected in the placing groove, the shell is provided with cooling grooves distributed at intervals, the shell is fixedly connected with two communicating shells, all the cooling grooves are communicated with the two communicating shells, the two communicating shells are respectively communicated with a water inlet and a water outlet of a cooling circulation mechanism, and the width of the cooling grooves is sequentially reduced from the middle part to two sides of the shell. As a further preferable scheme, the shell is provided with a mounting groove, swing plates which are distributed at intervals are rotationally connected in the mounting groove, and all swing plates are fixedly connected with anti-stab plates. As a further preferable scheme, the swing plate is slidably connected with a limit column, a spring is arranged between the limit column and the adjacent swing plate, the shell is provided with grooves distributed at intervals, the number of the grooves on the shell is consistent with that of the limit columns, and the limit columns are inserted into the adjacent grooves to limit the adjacent swing plates. As a further preferable scheme, the shell is rotationally connected with a guide plate, the shell is fixedly connected with an electric push rod, and the telescopic end of the electric push rod is rotationally and slidingly connected with the guide plate. As a further preferable scheme, the shell is fixedly connected with radiating plates which are distributed at intervals, and the radiating plates are positioned in the mounting groove. As a further preferable mode, the heat dissipation plates positioned between two adjacent swinging plates are fixedly connected with a connecting plate together. As a further preferred embodiment, the side of the stab-resistant plate facing away from the housing is coated with a friction material. As a further preferable mode, the guide plate is in an inclined state and is used for guiding wind flow generated during running of the vehicle. As a further preferable scheme, the swinging plates are divided into a plurality of groups, each group of the swinging plates is provided with two swinging plates, the number of the swinging plates is equal to that of the cooling grooves, and the intervals between the two swinging plates in different groups are sequentially reduced from the middle part to two sides of the shell. As a further preferable scheme, the heat radiating plate and the connecting plate are both made of heat conducting materials, and the swinging plate is made of hard materials. The cooling device has the beneficial effects that the cooling grooves distributed at intervals are used for radiating the battery pack, and the widths of the cooling grooves distributed at intervals are sequentially reduced from the middle part to two sides of the shell, so that the radiating effect on the heat accumulation part in the middle part of the battery pack is enhanced, the temperature of each part of the battery pack is more uniform, and the cooling efficiency of cooling water is improved. The anti-stab plate is used for blocking the hit object, so that the probability of the battery pack being hit is reduced, two adjacent swinging plates are enabled to rotate before the anti-stab plate is damaged, the hit object is clamped, the resistance to the hit object is improved, the probability of the batter