CN218827538U

CN218827538U - Safety protection shell for lithium battery

Info

Publication number: CN218827538U
Application number: CN202222784190.3U
Authority: CN
Inventors: 王俊
Original assignee: Yangzhou Xingtong Lithium Battery Technology Co ltd
Current assignee: Yangzhou Xingtong Lithium Battery Technology Co ltd
Priority date: 2022-10-20
Filing date: 2022-10-20
Publication date: 2023-04-07
Anticipated expiration: 2032-10-20

Abstract

The utility model belongs to the technical field of the protective housing and specifically relates to a safety protection shell for lithium cell, including fixed corner post, side protection board and protective housing roof, the inside both sides limit of fixed corner post has been seted up the card and has been established the groove, and the card is established inslot fixed side protection board, side protection board internally mounted buffering gasbag, the inner wall of side protection board sets up damping spring, and damping spring's inboard sets up the buffer board, and the inboard of buffer board sets up the stereoplasm protection board, sets up stable piece on the inner wall of stereoplasm protection board, and stereoplasm protection board inboard sets up the battery fixed chamber, the beneficial effects of the utility model provide a buffering gasbag, the inside buffer fluid that fills of buffering gasbag, cooperation damping spring and buffer board, the impact to the lithium cell is effectively reduced when the side bumps, prevents that the lithium cell is damaged, sets up louvre and battery heating panel, effectively reduces the inside heat of protective housing and piles up, prevents that the high temperature from leading to lithium cell spontaneous combustion, improves the security performance of lithium cell.

Description

Safety protection shell for lithium battery

Technical Field

The utility model relates to a protective housing technical field especially relates to a safety protection shell for lithium cell.

Background

Lithium batteries are batteries using a nonaqueous electrolyte solution and using lithium metal or a lithium alloy as a negative electrode material, and existing lithium batteries have been applied to various fields, including articles or devices such as automobiles and machinery. Lithium batteries can be broadly classified into two types: lithium metal batteries and lithium ion batteries. Lithium ion batteries do not contain lithium in the metallic state and are rechargeable. The fifth generation lithium metal battery of rechargeable battery was born in 1996, and the safety, specific capacity, self-discharge rate and cost performance ratio of the rechargeable battery are all superior to those of lithium ion batteries.

In the related art, due to the chemical property of lithium, when a lithium battery is damaged by strong impact, the lithium battery can be burned violently, and certain potential safety hazards exist.

The above information disclosed in this background section is only for background understanding of the inventive concept and, therefore, it may contain information that does not constitute prior art.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving the defects existing in the prior art and providing a safety protection shell for a lithium battery.

In order to realize the purpose, the utility model adopts the following technical scheme:

the utility model provides a safety protection shell for lithium cell, includes fixed corner post, side protection shield and buffering gasbag, the inside both sides limit of fixed corner post has been seted up the card and has been established the groove, the card is established the inslot card and is established and be fixed with the side protection shield, side protection shield internally mounted is provided with the buffering gasbag, the intussuseption of buffering gasbag is provided with buffer liquid, the welding is provided with multiunit damping spring on the inner wall of side protection shield, damping spring's inboard veneer is provided with the buffer board, the inboard veneer of buffer board is provided with the stereoplasm protection shield, the symmetry veneer is provided with the steady piece on the inner wall of stereoplasm protection shield, the inboard of stereoplasm protection shield and steady piece is provided with the fixed chamber of battery.

In some embodiments, a top plate fixing plate is fixedly arranged at the upper end of the fixing corner post, a fixing screw hole is formed in the fixing corner post, a top plate fixing hole is formed in the top plate fixing plate, and the top plate fixing hole corresponds to the fixing screw hole in position.

In some embodiments, the top plate fixing plate is fixed to the upper end of the fixing corner post through a top plate fixing hole bolt, a protective shell top plate is welded to the inner side of the top plate fixing plate, a battery heat dissipation plate is fixedly arranged on the inner side of the protective shell top plate, and heat dissipation holes are symmetrically formed in the periphery of the battery heat dissipation plate on the protective shell top plate.

In some embodiments, the buffer bladder is a flexible rubber bladder and the buffer liquid is a high temperature resistant non-newtonian fluid.

In some embodiments, the damping spring is a lightweight stainless steel damping spring.

In some embodiments, the side protection plate is provided with a plurality of groups of side protection rods at intervals at the position of the buffer air bag.

The utility model has the advantages that:

the utility model discloses in, set up the side protection shield, be provided with the buffering gasbag in the side protection shield, the inside buffer liquid that fills of buffering gasbag, cooperation damping spring and buffer board, effectively reduce the impact to the lithium cell when the side bumps, prevent that the lithium cell is damaged, set up the protective housing roof simultaneously, effectively protect the top of lithium cell, and set up louvre and battery heating panel on the protective housing roof, effectively reduce the inside heat of protective housing and pile up, prevent that the high temperature from leading to the spontaneous combustion of lithium cell, improve the security performance of lithium cell.

Drawings

Fig. 1 is a schematic structural diagram of a safety protection housing for a lithium battery according to the present invention;

fig. 2 is a schematic structural view of a top plate of a protective shell of a safety protection housing for a lithium battery according to the present invention;

fig. 3 is the utility model provides a side protection shield schematic diagram of safety protection shell for lithium cell.

In the figure: 1 is fixed screw, 2 is the buffering gasbag, 3 is buffer liquid, 4 is stable piece, 5 is the side protection board, 6 is fixed corner post, 7 is the buffer board, 8 is the stereoplasm protection board, 9 is the battery fixed chamber, 10 is damping spring, 11 is the roof fixed plate, 12 is the roof fixed orifices, 13 is the protective housing roof, 14 is the louvre, 15 is the battery heating panel, 16 is the side guard bar, 17 is the card and establishes the groove.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments.

It should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicate the directions or positional relationships based on the directions or positional relationships shown in the drawings, or the directions or positional relationships that the utility model is usually placed when in use, and are only for the convenience of describing and simplifying the description, but do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and thus, should not be construed as limiting the present invention.

In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Referring to fig. 1, a safety protection shell for lithium cell, including fixed corner post 6, side protection board 5 and buffering gasbag 2, the inside both sides limit of fixed corner post 6 has been seted up the card and has been established groove 17, the card is established the inslot card and is established and be fixed with side protection board 5, side protection board 5 internally mounted is provided with buffering gasbag 2, the intussuseption of buffering gasbag 2 is filled with and is provided with buffer liquid 3, the welding is provided with multiunit damping spring 10 on the inner wall of side protection board 5, damping spring 10's inboard veneer is provided with buffer board 7, buffer board 7's inboard veneer is provided with stereoplasm protection board 8, the symmetry veneer is provided with stabilizing block 4 on stereoplasm protection board 8's the inner wall, stereoplasm protection board 8 and stabilizing block 4's inboard is provided with battery fixing cavity 9, the fixed card of lithium cell is established in battery fixing cavity 9, prevent that the lithium cell from moving about.

The utility model discloses an during embodiment concrete implementation, as shown in fig. 1, 2, the fixed roof fixed plate 11 that is provided with in upper end of fixed corner post 6, fixed screw 1 has been seted up to fixed corner post 6 inside, has seted up roof fixed orifices 12 on the roof fixed plate 11, and roof fixed orifices 12 corresponds with the position of fixed screw 1, and fixed screw 1 and the inside screw thread that is provided with of roof fixed orifices 12 make things convenient for and outside bolt to carry out thread engagement.

The utility model discloses an during embodiment concrete implementation, as shown in fig. 1, 2, roof fixed plate 11 passes through roof fixed orifices 12 bolt fastening in the upper end of fixed corner post 6, roof fixed plate 11's inboard welding is provided with protective housing roof 13, the inboard fixed battery heating panel 15 that is provided with of protective housing roof 13, louvre 14 has been seted up to battery heating panel 15 all around on protective housing roof 13 symmetry, the lithium cell is hugged closely to battery heating panel 15, carry out the heat transmission of lithium cell through heat-conducting mode, louvre 14 is seted up simultaneously, can go out the waste heat transfer in the protective housing, the temperature of greatly reduced protective housing.

The embodiment of the utility model discloses a during specific implementation, as shown in figure 1, 3, buffering gasbag 2 is flexible rubber gasbag, buffer liquid 3 is high temperature resistance non-Newtonian fluid, damping spring 10 is light stainless steel damping spring, side protection shield 5 is provided with multiunit side protection rod 16 at 2 position intervals of buffering gasbag, side protection rod 16 prevents that buffering gasbag 2 from being destroyed by accident, non-Newtonian fluid, the fluid that does not satisfy Newton's stickness experiment law is meant, it cuts the fluid that is not linear relation between stress and the shearing rate of strain promptly, can carry out the rapid transformation to the kinetic energy that produces when receiving great impact, reduce the impact to the inside lithium cell of protective housing.

In this embodiment, establish the lithium cell card and fix in battery fixed cavity 9, guarantee the steady block 4 and the lithium cell body in close contact with on the stereoplasm protection shield 8, when the protective housing side received the impact, the kinetic energy that the impact produced at first absorbs through buffer liquid 3 in the buffering gasbag 2, subsequent impact is passed through damping spring 10 and is transmitted to buffer board 7 after filtering, buffer board 7 absorbs remaining impact, reduce the influence of collision to the lithium cell, the structure of inside lithium cell can not change when the while setting up stereoplasm protection shield 8 can guarantee to collide, prevent that the lithium cell damage from leading to the detonation, improve the security performance of lithium cell.

The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.

Claims

1. The utility model provides a safety protection shell for lithium cell, includes fixed corner post (6), side protection board (5) and buffering gasbag (2), its characterized in that: the inside both sides limit of fixed corner post (6) has been seted up the card and has been established groove (17), the card is established groove (17) inside callipers and is established and be fixed with side protection board (5), side protection board (5) internally mounted is provided with buffering gasbag (2), buffering gasbag (2) intussuseption is provided with buffer liquid (3), the welding is provided with multiunit damping spring (10) on the inner wall of side protection board (5), the inboard veneer of damping spring (10) is provided with buffer board (7), the inboard veneer of buffer board (7) is provided with stereoplasm protection board (8), the symmetry veneer is provided with on the inner wall of stereoplasm protection board (8) and stabilizes piece (4), the inboard of stereoplasm protection board (8) and stable piece (4) is provided with battery fixing cavity (9).

2. The safety protection casing for the lithium battery as claimed in claim 1, wherein a top plate fixing plate (11) is fixedly arranged at the upper end of the fixing corner post (6), a fixing screw hole (1) is formed inside the fixing corner post (6), a top plate fixing hole (12) is formed in the top plate fixing plate (11), and the top plate fixing hole (12) corresponds to the fixing screw hole (1).

3. The safety protection shell for the lithium battery as claimed in claim 2, wherein the top plate fixing plate (11) is fixed at the upper end of the fixing corner post (6) through a top plate fixing hole (12) by a bolt, a protection shell top plate (13) is welded on the inner side of the top plate fixing plate (11), a battery heat dissipation plate (15) is fixedly arranged on the inner side of the protection shell top plate (13), and heat dissipation holes (14) are symmetrically formed in the periphery of the battery heat dissipation plate (15) on the protection shell top plate (13).

4. The safety casing for lithium battery as claimed in claim 1, wherein the buffer bladder (2) is a flexible rubber bladder and the buffer liquid (3) is a high temperature-resistant non-newtonian fluid.

5. The safety casing for lithium battery as claimed in claim 1, wherein the damping spring (10) is a light stainless steel damping spring.

6. The safety shield casing for a lithium battery as claimed in claim 1, characterized in that the side shield plates (5) are provided with a plurality of sets of side shield bars (16) at intervals at the location of the buffer bladders (2).