CN212033062U - Lithium battery with explosion-proof device - Google Patents
Lithium battery with explosion-proof device Download PDFInfo
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- CN212033062U CN212033062U CN202020213562.5U CN202020213562U CN212033062U CN 212033062 U CN212033062 U CN 212033062U CN 202020213562 U CN202020213562 U CN 202020213562U CN 212033062 U CN212033062 U CN 212033062U
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- explosion
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
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Abstract
The utility model discloses a lithium cell with explosion-proof equipment, the lithium cell is used for electric bicycle, include: shell, lithium cell body, explosion-proof equipment, the upper portion of shell is equipped with explosion-proof lid, the inside activity of shell is equipped with the support, the inner wall spraying of shell has graphite alkene layer, a side embedding of shell is equipped with the socket that charges, explosion-proof covering is equipped with the exhaust hole, lithium cell body with the shell passes through support fixed connection, lithium cell body's upper portion is equipped with the electrode post, explosion-proof equipment includes explosion-proof layer subassembly, pressure release subassembly, PTC connection piece, explosion-proof layer subassembly is located the shell with between the lithium cell body, pressure release subassembly, PTC connection piece all set up explosion-proof lid's lower part. The utility model discloses simple structure, the equipment is convenient, effectively reduces the probability that the lithium cell burning exploded even, and the loss of bringing when reducing the lithium cell explosion has improved the security of using.
Description
Technical Field
The utility model relates to a lithium cell technical field, in particular to lithium cell with explosion-proof equipment.
Background
The lithium battery has the advantages of light weight, small volume, high charging speed, large electric capacity, longer service life, higher rated voltage, lower self-discharge rate, energy conservation and environmental protection, and has obvious advantages compared with the traditional lead-acid storage battery, so the lithium battery is widely applied to daily life.
However, the current lithium battery still has potential safety hazard, and in recent years that the lithium battery is used, the lithium battery often explodes in the charging process, and the explosion reasons of the lithium battery are roughly divided into three types: external short circuit, internal short circuit, battery overcharge; the direct explosion is caused by that the internal temperature is increased due to the short circuit of the battery, and the electrolyte in the battery is heated and vaporized, so that the battery is expanded and further generates explosion; some batteries may even burn the electrolyte, causing serious safety accidents.
The prior battery explosion-proof technology focuses on the consideration of avoiding battery explosion, so that once the battery is overheated and an explosion-proof device is triggered, the battery can not be used continuously.
Accordingly, further improvements will be required by those skilled in the relevant art.
SUMMERY OF THE UTILITY MODEL
The to-be-solved technical problem of the utility model is to provide a simple structure and compactness, the equipment is convenient, low in manufacturing cost can prevent that the lithium cell from burning and exploding even, has improved the security performance of lithium cell, and more energy-concerving and environment-protective lithium cell that has explosion-proof equipment.
In order to solve the technical problem, the utility model discloses a technical scheme does:
a lithium battery with an explosion-proof device, the lithium battery being used for an electric bicycle, comprising:
the battery charging device comprises a shell, a battery, a charging socket and a battery cover, wherein the shell is of a cavity structure with an opening at the top, an explosion-proof cover is arranged at the upper part of the shell, a bracket is movably arranged in the shell, a graphene layer is sprayed on the inner wall of the shell, a charging socket is embedded in one side surface of the shell, and an exhaust hole is formed in the explosion-proof cover;
the lithium battery body is arranged inside the shell, the lithium battery body is fixedly connected with the shell through the bracket, and an electrode column is arranged at the upper part of the lithium battery body;
the explosion-proof device is arranged in the shell and comprises an explosion-proof layer assembly, a pressure relief assembly and a PTC connecting piece, wherein the explosion-proof layer assembly is located between the shell and the lithium battery body, and the pressure relief assembly and the PTC connecting piece are arranged on the lower portion of the explosion-proof cover.
Preferably, the explosion-proof layer assembly comprises an explosion-proof layer, a buffer layer and a heat conduction layer, the explosion-proof layer and the heat conduction layer are arranged on two sides of the buffer layer, and the explosion-proof layer comprises an explosion-proof net and a protective film arranged in the explosion-proof net.
Preferably, the pressure relief assembly comprises a pressure relief valve and a pressure relief pipe, one end of the pressure relief valve is connected with the exhaust hole pipeline, and the other end of the pressure relief valve is in through connection with the pressure relief pipe.
Preferably, the lithium battery further comprises an explosion-proof sheet, wherein the explosion-proof sheet is movably arranged in the shell and positioned on the upper part of the lithium battery body, and the explosion-proof sheet is matched with the shell.
Preferably, the shell is provided with an annular limiting retainer ring along the inner wall at the end close to the opening, the annular limiting retainer ring is evenly provided with a plurality of first threaded holes, and the upper part of the annular limiting retainer ring is provided with a silica gel pad.
Preferably, the housing is made of aluminum alloy and/or stainless steel material.
Preferably, the PTC connection pieces are electrically connected to the electrode posts and the charging sockets, respectively.
Preferably, the explosion-proof cover is provided with a plurality of second threaded holes matched with the first threaded holes, and the explosion-proof cover is connected with the shell through bolts.
The beneficial effects of the utility model reside in that:
the utility model discloses simple structure, the equipment is convenient, effectively reduces the probability that the lithium cell burning exploded even, the loss of bringing when reducing the lithium cell explosion. The utility model discloses an increase the multiple protection of explosion-proof layer subassembly, pressure release subassembly, PTC connection piece, improved the security of using.
Drawings
Fig. 1 is a front view of an embodiment of a lithium battery with an explosion-proof device according to the present invention;
fig. 2 is a top view of an embodiment of a lithium battery with an explosion-proof device according to the present invention;
fig. 3 is a schematic structural diagram of an embodiment of a lithium battery with an explosion-proof device according to the present invention.
In the figure, 1-shell, 2-explosion-proof cover, 3-charging socket, 4-handle and 5-vent hole.
Detailed Description
The following describes the present invention with reference to the accompanying drawings. It should be noted that the description of the embodiments is provided to help understanding of the present invention, but the present invention is not limited thereto. In addition, the technical features related to the embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.
As shown in fig. 1 to 3, a lithium battery having an explosion-proof device for an electric bicycle, includes:
the shell 1 is of a cavity structure with an opening at the top, the upper part of the shell 1 is provided with an explosion-proof cover 2, a bracket is movably arranged in the shell 1, the inner wall of the shell 1 is sprayed with a graphene layer, one side surface of the shell 1 is embedded with a charging socket 3, and the explosion-proof cover 2 is provided with an exhaust hole 5;
specifically, in this embodiment, the explosion-proof cover 2 is provided with a plurality of vent holes 5, and the diameter of the vent hole 5 is larger than 1 MM.
The lithium battery comprises a lithium battery body, wherein the lithium battery body is arranged inside a shell 1, the lithium battery body is fixedly connected with the shell 1 through a bracket, and an electrode column is arranged at the upper part of the lithium battery body;
explosion-proof equipment, explosion-proof equipment set up in the inside of shell 1, and explosion-proof equipment includes explosion-proof layer subassembly, pressure release subassembly, PTC connection piece, and the explosion-proof layer subassembly is located between shell 1 and the lithium cell body, and pressure release subassembly, PTC connection piece all set up the lower part at explosion-proof lid 2.
The utility model discloses in the embodiment of the preferred, explosion-proof layer subassembly includes explosion-proof layer, buffer layer, heat-conducting layer, and explosion-proof layer, heat-conducting layer setting are in the both sides of buffer layer, and the explosion-proof layer includes explosion-proof net and sets up the protecting film in explosion-proof net.
Specifically, in this embodiment, the heat conducting layer is a graphite layer, and the buffer layer is a metal oxide layer.
The utility model discloses in the embodiment of the preferred, the pressure release subassembly includes relief valve, pressure release pipe, the one end and the exhaust hole tube coupling of relief valve, the other end and the pressure release pipe through connection of relief valve.
The utility model discloses in the preferred embodiment, still include the explosion-proof piece, the explosion-proof piece activity sets up in the inside of shell 1 and is located lithium cell body's upper portion, explosion-proof piece and shell 1 phase-match.
The utility model discloses in the embodiment of the preferred, the shell is provided with the spacing retaining ring of annular along the inner wall is fixed apart from the nearer one end of opening, and the spacing retaining ring of annular evenly is equipped with a plurality of first screw holes, and spacing retaining ring upper portion of annular is equipped with the silica gel pad.
In the preferred embodiment of the present invention, the housing 1 is made of aluminum alloy and/or stainless steel.
In the preferred embodiment of the present invention, the PTC connecting sheet is electrically connected to the charging socket 3 through the electrode post.
The utility model discloses in the embodiment of preferred, be equipped with on the explosion-proof lid 3 with a plurality of first screw hole assorted second screw holes, explosion- proof lid 2 and 1 bolted connection of shell.
Specifically, in this implementation, the explosion-proof cover further comprises a handle, and the handle 4 is embedded in the upper portion of the explosion-proof cover 3.
The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the described embodiments. It will be apparent to those skilled in the art that various changes, modifications, substitutions and alterations can be made in the embodiments without departing from the principles and spirit of the invention, and the scope of the invention is to be accorded the full scope of the claims.
Claims (8)
1. A lithium battery with an explosion-proof device, the lithium battery being used for an electric bicycle, comprising:
the battery charging device comprises a shell, a battery, a charging socket and a battery cover, wherein the shell is of a cavity structure with an opening at the top, an explosion-proof cover is arranged at the upper part of the shell, a bracket is movably arranged in the shell, a graphene layer is sprayed on the inner wall of the shell, a charging socket is embedded in one side surface of the shell, and an exhaust hole is formed in the explosion-proof cover;
the lithium battery body is arranged inside the shell, the lithium battery body is fixedly connected with the shell through the bracket, and an electrode column is arranged at the upper part of the lithium battery body;
the explosion-proof device is arranged in the shell and comprises an explosion-proof layer assembly, a pressure relief assembly and a PTC connecting piece, wherein the explosion-proof layer assembly is located between the shell and the lithium battery body, and the pressure relief assembly and the PTC connecting piece are arranged on the lower portion of the explosion-proof cover.
2. The lithium battery with the explosion-proof device as claimed in claim 1, wherein the explosion-proof layer assembly comprises an explosion-proof layer, a buffer layer and a heat conducting layer, the explosion-proof layer and the heat conducting layer are arranged on two sides of the buffer layer, and the explosion-proof layer comprises an explosion-proof net and a protective film arranged in the explosion-proof net.
3. The lithium battery with the explosion-proof device as claimed in claim 1, wherein the pressure relief assembly comprises a pressure relief valve and a pressure relief pipe, one end of the pressure relief valve is connected with the exhaust hole pipeline, and the other end of the pressure relief valve is connected with the pressure relief pipe in a penetrating manner.
4. The lithium battery with the explosion-proof device as claimed in claim 1, further comprising an explosion-proof sheet movably arranged inside the housing and on the upper part of the lithium battery body, wherein the explosion-proof sheet is matched with the housing.
5. The lithium battery with the explosion-proof device as claimed in claim 1, wherein an annular limiting retainer ring is fixedly arranged at one end of the shell closer to the opening along the inner wall, the annular limiting retainer ring is uniformly provided with a plurality of first threaded holes, and a silica gel pad is arranged at the upper part of the annular limiting retainer ring.
6. The lithium battery with explosion-proof device of claim 1, wherein the housing is made of aluminum alloy and/or stainless steel material.
7. A lithium battery with explosion-proof device according to claim 1, wherein the PTC connection pieces are electrically connected to the electrode posts and the charging sockets, respectively.
8. A lithium battery with an explosion-proof device according to claim 5, characterized in that the explosion-proof cover is provided with a second threaded hole matching with the plurality of first threaded holes, and the explosion-proof cover is bolted with the housing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020213562.5U CN212033062U (en) | 2020-02-26 | 2020-02-26 | Lithium battery with explosion-proof device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020213562.5U CN212033062U (en) | 2020-02-26 | 2020-02-26 | Lithium battery with explosion-proof device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212033062U true CN212033062U (en) | 2020-11-27 |
Family
ID=73493192
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020213562.5U Active CN212033062U (en) | 2020-02-26 | 2020-02-26 | Lithium battery with explosion-proof device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212033062U (en) |
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2020
- 2020-02-26 CN CN202020213562.5U patent/CN212033062U/en active Active
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