CN210110853U - Lithium battery cap - Google Patents
Lithium battery cap Download PDFInfo
- Publication number
- CN210110853U CN210110853U CN201920870907.1U CN201920870907U CN210110853U CN 210110853 U CN210110853 U CN 210110853U CN 201920870907 U CN201920870907 U CN 201920870907U CN 210110853 U CN210110853 U CN 210110853U
- Authority
- CN
- China
- Prior art keywords
- ring
- lithium battery
- ptc
- explosion
- cap
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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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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- Gas Exhaust Devices For Batteries (AREA)
Abstract
The utility model belongs to the technical field of lithium ion battery and specifically relates to a lithium battery block, include: sealing washer, damping ring, top cap, PTC ring sum explosion-proof piece, the inside top cap that is provided with of sealing washer, and the both sides fixedly connected with damping ring of top cap, the top fixedly connected with PTC ring of damping ring. The utility model discloses a pressure in the equipment has slowed down effectively, has avoided causing bigger destruction because of the too big pressure in the equipment.
Description
Technical Field
The utility model relates to a lithium ion battery field, more specifically say, relate to a lithium cell block.
Background
The lithium battery cap is a component of a lithium battery, and plays a role of a positive conductive terminal on the lithium battery, a role of a safety valve and a function of sealing the battery; however, the lithium battery often generates high temperature due to long-time operation, and further generates more harm; the lithium battery cap is an important part in equipment, and the requirement for the lithium battery cap is higher and higher; in the common battery explosion event, most of the events are pressure changes caused by overhigh internal temperature of the lithium battery; in addition, in the moving process of the lithium battery, the lithium battery can trigger the change of the internal structure of the lithium battery due to the high-speed impact back and forth, so that the damage is caused.
SUMMERY OF THE UTILITY MODEL
Problem (A)
In order to solve the technical problem, the utility model provides a lithium battery cap's equipment to solve the inside pressure of lithium cell too high and jar-proof problem.
(II) technical scheme
In order to achieve the above object, the present invention provides: a lithium battery cap, comprising: sealing washer, damping ring, top cap, PTC ring sum explosion-proof piece, the inside top cap that is provided with of sealing washer, and the both sides fixedly connected with damping ring of top cap, the top fixedly connected with PTC ring of damping ring.
Preferably, the outer surface of the sealing ring is provided with air outlet holes in a surrounding manner, and the air outlet holes are inclined at an angle of 45 degrees.
Preferably, the sealing ring is made of rubber.
Preferably, the middle part of the PTC ring is clamped with a pressure relief valve.
Preferably, a crack between the explosion-proof sheet and the PTC ring forms a buffer cavity, and the top end of the PTC ring is provided with the explosion-proof sheet.
Preferably, the PTC ring is a polymer type thermistor.
(III) advantageous effects
The utility model solves the problems that the pressure intensity is too large due to too large current in the lithium battery, and the temperature of the PTC ring is rapidly raised, the connection between the lithium battery and the external equipment can be disconnected, and the internal gas is discharged into the buffer cavity to break the explosion-proof sheet through opening the gas release valve, so that the air pressure in the top cover is reduced; and the damping ring in the equipment can effectively reduce the pressure of the outside on the equipment, and effectively prevents the occurrence of harm.
Drawings
FIG. 1 is a schematic view of the overall structure of the present invention;
fig. 2 is a sectional view of the overall structure of the present invention.
In the drawings, the corresponding relationship between the component names and the reference numbers is as follows:
Detailed Description
In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "connected" and "connected" are to be interpreted broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; may be directly connected or indirectly connected through an intermediate. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Example (b):
as shown in fig. 1-2;
the embodiment provides a lithium battery cap, including: sealing washer 1, damping ring 2, top cap 3, PTC ring 4 and explosion- proof piece 5, 1 inside top caps 3 that are provided with of sealing washer, and the both sides fixedly connected with damping ring 2 of top cap 3, the top fixedly connected with PTC ring 4 of damping ring 2.
Wherein, the surface of sealing washer 1 encircles and is provided with venthole 6, and venthole 6 is 45 inclination, can closely laminate inside part.
Wherein, sealing washer 1 is rubber material, high temperature resistant, low temperature resistant.
Wherein, the middle part joint of PTC ring 4 has relief valve 8, can suitably adjust the inside atmospheric pressure of structure.
Wherein, the crack between explosion-proof piece 5 and PTC ring 4 has formed buffering cavity 7, and the top of PTC ring 4 is provided with explosion-proof piece 5, and explosion-proof piece 5 texture is soft, and when the gas pressure in buffering cavity 7 was too big, explosion-proof piece 5 can be broken, reduces the pressure in the equipment, avoids equipment to damage.
The PTC ring 4 is a polymer thermistor, which can effectively monitor the current of the internal device, and when the current is too large, the closing of the pressure release valve 8 can be controlled by the PTC ring 4.
The working principle is as follows: after the device is installed, as shown in fig. 1 and fig. 2, when the internal temperature of the lithium battery is too high, the PTC ring 4 also rapidly heats up, and then the connection between the lithium battery and the external electric equipment is disconnected; the PTC ring 4 also controls the relief valve 8 to be opened, so that air pressure in the equipment enters the buffer cavity 7 through the relief valve 8, and when the air pressure in the buffer cavity 7 is too high, the explosion-proof sheet 5 can be broken, the air pressure in the equipment is completely discharged outside, so that the balance of two sides is kept, and the equipment is protected; when the lithium cell is at the removal in-process, can not avoid having the striking or the accident that falls to take place, the shock attenuation circle 2 in the top cap 3 can alleviate external impact to equipment this moment, protection equipment.
Claims (6)
1. A lithium battery cap, comprising: sealing washer (1), damping ring (2), top cap (3), PTC ring (4) and explosion-proof piece (5), its characterized in that, sealing washer (1) inside is provided with top cap (3), and the both sides fixedly connected with damping ring (2) of top cap (3), the top fixedly connected with PTC ring (4) of damping ring (2).
2. A lithium battery cap as claimed in claim 1, characterized in that the outer surface of the sealing ring (1) is provided with air outlet holes (6) around, and the air outlet holes (6) have an inclination angle of 45 °.
3. A lithium battery cap as claimed in claim 1, characterized in that the sealing ring (1) is of rubber material.
4. A lithium battery cap as claimed in claim 1, characterized in that a pressure relief valve (8) is snapped in the middle of the PTC ring (4).
5. A lithium battery cap as claimed in claim 1, characterized in that the crack between the explosion-proof sheet (5) and the PTC ring (4) forms a buffer cavity (7), and the top end of the PTC ring (4) is provided with the explosion-proof sheet (5).
6. A lithium battery cap as claimed in claim 1, characterized in that the PTC ring (4) is a polymer type thermistor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920870907.1U CN210110853U (en) | 2019-06-11 | 2019-06-11 | Lithium battery cap |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920870907.1U CN210110853U (en) | 2019-06-11 | 2019-06-11 | Lithium battery cap |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210110853U true CN210110853U (en) | 2020-02-21 |
Family
ID=69564556
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920870907.1U Expired - Fee Related CN210110853U (en) | 2019-06-11 | 2019-06-11 | Lithium battery cap |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210110853U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111584774A (en) * | 2020-06-15 | 2020-08-25 | 韩旭峰 | Safe naked-flame-free lithium iron phosphate battery |
-
2019
- 2019-06-11 CN CN201920870907.1U patent/CN210110853U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111584774A (en) * | 2020-06-15 | 2020-08-25 | 韩旭峰 | Safe naked-flame-free lithium iron phosphate battery |
| CN111584774B (en) * | 2020-06-15 | 2022-09-02 | 韩旭峰 | Safe naked-flame-free lithium iron phosphate battery |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200221 |