CN208655713U - A kind of battery cap - Google Patents
A kind of battery cap Download PDFInfo
- Publication number
- CN208655713U CN208655713U CN201821160432.9U CN201821160432U CN208655713U CN 208655713 U CN208655713 U CN 208655713U CN 201821160432 U CN201821160432 U CN 201821160432U CN 208655713 U CN208655713 U CN 208655713U
- Authority
- CN
- China
- Prior art keywords
- metal plate
- explosion
- welded
- rupture disk
- battery 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.)
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Classifications
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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
Top cover, PTC piece, explosion rupture disk, metal plate and welded post are from top to bottom respectively equipped with the utility model discloses a kind of battery cap, including sealing ring, in the sealing ring；The top cover is equipped at least one perforative first venthole up and down, multiple explosion-proof lines are offered in the explosion rupture disk, the metal plate is welded in explosion rupture disk bottom, and connecting hole is offered at explosion rupture disk welding position on metal plate, the welding column bottom is welded with tab, the welded post is detachably flexibly connected with the connecting hole on metal plate, and the metal plate is equipped at least one perforative second venthole up and down.First by tab welding to welded post, connecting hole is opened up on a metal plate, and by the threaded connection between welded post and connecting hole, the welded post for having welded tab is connected on battery cap by realization, avoids the explosion-proof line damaging problem that traditional handicraft may cause.
Description
Technical field
The utility model belongs to accessory battery technical field, and in particular to a kind of battery cap.
Background technique
Currently, the nut cap of column lithium ion battery and core tab are all using ultrasonic spot welding formula or laser welding
Formula, either spot welding or Laser Welding can all destroy the possibility for the explosion-proof line that rupture pressure disc on piece opens up in the presence of welding, cause battery
The problem of battery request is not achieved in leakage and explosion-proof pressure generation.
Summary of the invention
To solve the deficiencies in the prior art, the purpose of this utility model is to provide a kind of battery cap, the battery caps
It can be avoided the case where being destroyed because of battery cap with the explosion-proof line that rupture pressure disc on piece occurs in core tab welding.
In order to achieve the above objectives, the utility model adopts the following technical solutions: a kind of battery cap, including sealing
It encloses, is from top to bottom respectively equipped with top cover, PTC piece, explosion rupture disk, metal plate and welded post in the sealing ring；It is set on the top cover
There is at least one perforative first venthole up and down, offers multiple explosion-proof lines in the explosion rupture disk, the metal plate is welded in
Explosion rupture disk bottom, and on metal plate with connecting hole is offered at explosion rupture disk welding position, the welding column bottom is welded with tab,
The welded post is detachably flexibly connected with the connecting hole on metal plate, and it is perforative up and down that the metal plate is equipped at least one
Second venthole.
Further, the welding column outer wall is equipped with external screw thread, and the connecting hole inner wall on the metal plate is equipped with internal screw thread,
The welded post is threadedly coupled with connecting hole.
Further, the edge of the explosion rupture disk is dug upwards and wraps up the edge formation sealing of top cover.
Further, explosion-proof line of the second venthole of the metal plate towards the explosion rupture disk.
Further, first venthole is not overlapped in vertical direction with the second venthole.
Further, the metal plate and welded post are all made of alumel material and are made.
Further, the top cover outer surface is equipped with erosion resistant coating.
Further, the thickness of the explosion-proof line is less than the thickness of explosion rupture disk.
The utility model has the beneficial effect that in compared with the prior art directly by core tab welding to battery cap
On traditional handicraft, the utility model first by tab welding to welded post, opens up connecting hole on a metal plate, passes through welded post
The welded post for having welded tab is connected on battery cap by the threaded connection between connecting hole, realization, avoids traditional work
The explosion-proof line damaging problem that skill may cause.
Detailed description of the invention
Fig. 1 is a kind of structural schematic diagram of battery cap of the utility model.
Attached meaning marked in the figure is as follows: 1, sealing ring, 2, top cover, the 21, first venthole, 3, PTC piece, 4, explosion rupture disk,
41, explosion-proof line, 5, metal plate, 51, connecting hole, the 52, second venthole, 6, welded post, 7, tab, 8, erosion resistant coating.
Specific embodiment
Specific introduce is made to the utility model below in conjunction with the drawings and specific embodiments.
As shown in Figure 1, a kind of battery cap, including sealing ring 1, top cover 2, PTC are from top to bottom respectively equipped in sealing ring 1
Piece 3, explosion rupture disk 4, metal plate 5 and welded post 6.
A conical round table is raised into the middle part of top cover 2, is offered in explosion rupture disk 4 multiple in the increase of cylindrical battery internal pressure
When the explosion-proof line 41 that can rupture, metal plate 5 is welded in 4 bottom of explosion rupture disk, and opens on metal plate 5 at 4 welding position of explosion rupture disk
Equipped with connecting hole 51,6 bottom of welded post is welded with tab 7, and tab 7 is connected to weldering by ultrasonic spot welding or laser welding mode
The bottom of column 6 is connect, welded post 6 is detachably flexibly connected with the connecting hole 51 on metal plate 5, and 6 outer wall of welded post is equipped with external screw thread,
51 inner wall of connecting hole on metal plate 5 is equipped with internal screw thread, and welded post 6 is threadedly coupled with connecting hole 51.It is top cover 2, PTC piece 3, explosion-proof
Piece 4, metal plate 5 and welded post 6 successively stack to form a complete access from top to bottom.
The edge formation sealing of top cover 2 is dug upwards and is wrapped up at the edge of explosion rupture disk 4, makes the connection of top cover 2 Yu explosion rupture disk 4
It is more firm, efficiently solve cause because of poor contact the resistance in column lithium ion battery it is unstable this it is bad because
Element.
Top cover 2 is equipped at least one perforative first venthole 21 up and down, the multiple explosion-proof lines 41 opened up in explosion rupture disk 4
It can be circular ring structure, arc groove of the explosion-proof line or multiple weeks of such as multiple presentation circular concentric arrangements as interval, metal
Plate 5 is equipped at least one perforative second venthole 52 up and down.Second venthole 52 of metal plate 5 is prevented towards explosion rupture disk 4
Quick-fried line 41, gas directly passes through the second venthole 52 and directly impacts the position of explosion-proof line 41 when pressure release, and impact force is strong, it is easier to
Explosion-proof line 41 disposably is broken through, is not necessarily to pressure accumulation process, safety is higher.First venthole 21 and the second venthole 52 are in Vertical Square
It is not overlapped upwards, pressure leak process gas passes through explosion-proof line 41 and impacts top cover 2, then is sprayed by the first venthole 21, can reduce spray
Gas velocity out.
Column lithium ion battery can generate in charge and discharge process and when heated, needle thorn, extruding and shock
High temperature, temperature are transferred to explosion rupture disk 4 by the solder joint between metal plate 5 and explosion rupture disk 4, and temperature is passed to PCT again by explosion rupture disk 4
Piece 3, PCT piece 3 inhibit the conducting of electric current because temperature is excessively high, so that operating current is in off state, to protect lithium battery can
To continue to use.
The connection procedure of battery cap and core tab specifically: tab 7 is first passed through into ultrasonic spot welding or laser welding
Mode is welded to the bottom of welded post 6, then the welded post 6 for having welded core tab is rotated to the connecting hole 51 on metal plate 5
It goes up and tightens, the connection of battery cap and tab is realized with this.It avoids preventing because battery cap and core tab directly weld
The case where explosion-proof line on quick-fried diaphragm is destroyed.
Metal plate 5 and welded post 6 are all made of alumel material and are made, and there is stronger electronics to carry logical ability, meet
The requirement of lithium battery quick charge and the output of big multiplying power.
2 outer surface of top cover is equipped with erosion resistant coating 7, prevents 2 corrosion and ageing of top cover, prolongs the service life.
In use process: when there is security risk, a large amount of gas is generated inside column lithium ion battery, gas is worn
The second through-hole 52 for crossing on metal plate 5 reaches explosion rupture disk 4 and metal plate 5 is formed by cavity, with gradually increasing for gas,
Cavity inside air pressure increases with it, and the solder joint between explosion rupture disk 4 and metal plate 5 is caused to be pulled off to form open circuit, prevent battery after
Continue improper generation gas, air pressure still increases in cavity under off state, and gas breaks through explosion-proof line 41, and passes through on top cover 2
The first venthole 21 be discharged to the external world, to prevent from exploding, the thickness of explosion-proof line 41 needs to be less than the thickness of explosion rupture disk 4 so as in making
Portion's gas is smoothly discharged.
The basic principles and main features and advantage of the utility model have been shown and described above.The technical staff of the industry
It should be appreciated that above-described embodiment does not limit the utility model in any form, it is all by the way of equivalent substitution or equivalent transformation
Technical solution obtained, all falls in the protection scope of the utility model.
Claims (8)
1. a kind of battery cap, which is characterized in that including sealing ring (1), be from top to bottom respectively equipped with top in the sealing ring (1)
Cover (2), PTC piece (3), explosion rupture disk (4), metal plate (5) and welded post (6)；The top cover (2) is equipped at least one and passes through up and down
The first venthole (21) worn offers multiple explosion-proof lines (41) on the explosion rupture disk (4), and the metal plate (5) is welded in anti-
Quick-fried (4) bottom, and offered connecting hole (51) on metal plate (5) at explosion rupture disk (4) welding position, the welded post (6)
Bottom is welded with tab (7), and the welded post (6) is detachably flexibly connected with the connecting hole (51) on metal plate (5), the gold
Belong to plate (5) and is equipped at least one perforative second venthole (52) up and down.
2. a kind of battery cap according to claim 1, which is characterized in that welded post (6) outer wall is equipped with external screw thread,
Connecting hole (51) inner wall on the metal plate (5) is equipped with internal screw thread, and the welded post (6) is threadedly coupled with connecting hole (51).
3. a kind of battery cap according to claim 1, which is characterized in that dig upwards at the edge of the explosion rupture disk (4)
And the edge for wrapping up top cover (2) forms sealing.
4. a kind of battery cap according to claim 1, which is characterized in that the second venthole of the metal plate (5)
(52) towards the explosion-proof line (41) of the explosion rupture disk (4).
5. a kind of battery cap according to claim 4, which is characterized in that first venthole (21) and the second ventilation
Hole (52) is not overlapped in vertical direction.
6. a kind of battery cap according to claim 1, which is characterized in that the metal plate (5) and welded post (6) are adopted
It is made of alumel material.
7. a kind of battery cap according to claim 1, which is characterized in that top cover (2) outer surface is equipped with erosion resistant coating
(8)。
8. a kind of battery cap according to claim 1, which is characterized in that the thickness of the explosion-proof line (41) is less than explosion-proof
The thickness of piece (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821160432.9U CN208655713U (en) | 2018-07-20 | 2018-07-20 | A kind of battery cap |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821160432.9U CN208655713U (en) | 2018-07-20 | 2018-07-20 | A kind of battery cap |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208655713U true CN208655713U (en) | 2019-03-26 |
Family
ID=65786095
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821160432.9U Active CN208655713U (en) | 2018-07-20 | 2018-07-20 | A kind of battery cap |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208655713U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109103359A (en) * | 2018-07-20 | 2018-12-28 | 苏州橙柳电子精密有限公司 | A kind of battery cap |
-
2018
- 2018-07-20 CN CN201821160432.9U patent/CN208655713U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109103359A (en) * | 2018-07-20 | 2018-12-28 | 苏州橙柳电子精密有限公司 | A kind of battery cap |
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