CN108091784A - Cylindrical lithium ion battery cap - Google Patents
Cylindrical lithium ion battery cap Download PDFInfo
- Publication number
- CN108091784A CN108091784A CN201711291132.4A CN201711291132A CN108091784A CN 108091784 A CN108091784 A CN 108091784A CN 201711291132 A CN201711291132 A CN 201711291132A CN 108091784 A CN108091784 A CN 108091784A
- Authority
- CN
- China
- Prior art keywords
- lithium ion
- ion battery
- pressure disc
- rupture pressure
- column lithium
- 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.)
- Pending
Links
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 title claims abstract description 40
- 229910001416 lithium ion Inorganic materials 0.000 title claims abstract description 40
- 238000007789 sealing Methods 0.000 claims abstract description 20
- 229910000679 solder Inorganic materials 0.000 claims description 14
- 238000005260 corrosion Methods 0.000 claims description 2
- 239000011148 porous material Substances 0.000 abstract 5
- 239000012528 membrane Substances 0.000 abstract 4
- 239000007789 gas Substances 0.000 description 8
- 238000000034 method Methods 0.000 description 4
- 238000003466 welding Methods 0.000 description 3
- 239000011248 coating agent Substances 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 230000003628 erosive effect Effects 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 230000032683 aging Effects 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/10—Primary casings; Jackets or wrappings
- H01M50/147—Lids or covers
- H01M50/148—Lids or covers characterised by their shape
- H01M50/152—Lids or covers characterised by their shape for cells having curved cross-section, e.g. round or elliptic
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/50—Current conducting connections for cells or batteries
- H01M50/572—Means for preventing undesired use or discharge
- H01M50/574—Devices or arrangements for the interruption of current
- H01M50/581—Devices or arrangements for the interruption of current in response to temperature
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M2200/00—Safety devices for primary or secondary batteries
- H01M2200/10—Temperature sensitive devices
- H01M2200/106—PTC
-
- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Gas Exhaust Devices For Batteries (AREA)
Abstract
The invention discloses a cylindrical lithium ion battery cap which comprises a top cover, an explosion-proof membrane provided with an explosion-proof line, a pore plate provided with a plurality of first through holes, a sealing ring, a PTC plate and a cover plate, wherein the top cover, the explosion-proof membrane and the pore plate are sequentially stacked from top to bottom, the top cover and the explosion-proof membrane are wrapped in the sealing ring, the middle part of the explosion-proof membrane is connected with the middle part of the pore plate, the outer edge of the pore plate is clamped into a clamping groove arranged in the sealing ring, the PTC plate is clamped into the clamping groove, the PTC plate is in contact connection with the top of the pore plate, and the PTC plate is provided with a plurality of second through. The invention provides a cylindrical lithium ion battery cap which is sensitive and accurate in preventing temperature rise.
Description
Technical field
The present invention relates to lithium ion battery accessory technical field more particularly to a kind of column lithium ion battery blocks.
Background technology
As society develops to clean energy resource direction, there is the cylinder of high energy ratio and long service life
Lithium ion battery is subject to popular welcome, but column lithium ion battery in charge and discharge process and heated, pin thorn, squeeze and
High temperature can be generated when shock, and supervenes a large amount of gases.
It is by a kind of column lithium ion battery block to solve column lithium ion battery heating problem on the market at present
It solves, structure is：Head cover, PTC rings, burst disk and orifice plate stack successively from top to bottom, in the middle part of burst disk and in the middle part of orifice plate
By laser electric welding connection, head cover is equipped with venthole, and burst disk is equipped with the circular arc explosion-proof line being stamped to form, and orifice plate is equipped with logical
Stomata, head cover are wrapped in burst disk in sealing ring, and orifice plate is caught in the card slot inside sealing ring.Work as column lithium ion
When temperature is promoted rapidly in the battery short time, temperature can be transferred to burst disk by the solder joint between orifice plate and burst disk, explosion-proof
Temperature is passed to PTC rings by piece again, and PTC rings can inhibit the conducting of electric current due to temperature is excessively high, and operating current is made to be in breaking shape
State, so as to protect column lithium ion battery that can be continuing with.
But the temperature-rise period of column lithium ion battery can be very fast among reality, and multilayer is arrived involved in said program
Conduction, and conduct and must could be transmitted over by the solder joint of very little between burst disk and orifice plate, cause internal heat very
Hardly possible is accurately transferred on PTC rings rapidly, so as to which PTC rings are not reaching to operating temperature.Due to column lithium ion battery block
In PTC rings cannot sensitively be heated rapidly, column lithium ion battery internal temperature, which can still raise rapidly, generates a large amount of gas
Body, it is serious also column lithium ion battery to be made to fail.
The content of the invention
Prevent temperature from raising more sensitive and accurate column lithium ion battery lid it is an object of the invention to provide a kind of
Cap.
Technical solution is used by column lithium ion battery block disclosed by the invention：A kind of column lithium ion electric
Pond block, the rupture pressure disc including head cover, equipped with explosion-proof line, the orifice plate equipped with multiple first through hole, sealing ring, the head cover are prevented
Quick-fried film and orifice plate stack successively from top to bottom, and the head cover is wrapped in rupture pressure disc in sealing ring, in the middle part of the rupture pressure disc and hole
Connection in the middle part of plate, orifice plate outside are caught in the card slot inside sealing ring, further include a PTC plates, card is caught in outside the PTC plates
Slot, the PTC plates are contacted with orifice plate to be connected, and the PTC plates offer the second through hole of multiple cooperation first through hole.
Preferably, the rupture pressure disc outer ring is equipped with annular fixing groove, and annular fixing groove is caught in outside the head cover
It is interior.
Preferably, multiple first solder joints are equipped with outside the head cover, the rupture pressure disc is equipped with multiple second solder joints,
Multiple first solder joint corresponding matchings connect multiple second solder joints.
Preferably, the sealing ring is equipped with a ring-shaped step, and the rupture pressure disc is arranged in annular step surface.
Preferably, the ring-shaped step is equipped with multiple bradyseism boss, and the bradyseism boss contacts company with rupture pressure disc
It connects.
Preferably, a lug is further included, the lug is connected with PTC plates.
Preferably, the head cover outer surface is equipped with erosion resistant coating.
Preferably, the head cover is central raised into a conical round table.
Preferably, the round platform side wall offers multiple ventholes.
Preferably, the thickness of the explosion-proof line is less than the thickness of rupture pressure disc.
The advantageous effect of column lithium ion battery block disclosed by the invention is：By head cover, rupture pressure disc and orifice plate by
Top to bottm stacks successively, and head cover is wrapped in rupture pressure disc in sealing ring, and with being connected in the middle part of orifice plate in the middle part of rupture pressure disc, orifice plate offers
Multiple first through hole, orifice plate outside are caught in the card slot inside sealing ring, card slot, PTC plates and orifice plate top are caught in outside PTC plates
Connection is touched, PTC plates offer the second through hole of multiple cooperation first through hole.When the inside of column lithium ion battery is rapid
During heating, heat can be transferred in first time large area on PTC plates, and PTC plates can inhibit due to the rapid rise of temperature at this time
The conducting of electric current, so that it is more sensitive and accurate to prevent that temperature from raising this process.
Description of the drawings
Fig. 1 is the structure diagram of column lithium ion battery block of the present invention.
Specific embodiment
The present invention is further elaborated and illustrated with reference to specific embodiment and Figure of description：It please refers to Fig.1, one
Kind column lithium ion battery block, including head cover 10, rupture pressure disc 20, orifice plate 30, sealing ring 40, PTC plates 50 and lug 60.
Head cover 10 is central raised into a conical round table, and round platform side wall offers multiple ventholes 11, and rupture pressure disc 20 is equipped with anti-
Quick-fried line 21, orifice plate 30 are equipped with multiple first through hole 31, and PTC plates 50 offer the second through hole of multiple cooperation first through hole 31
51.Head cover 10, rupture pressure disc 20, orifice plate 30 and PTC plates 50 stack the access to form a completion successively from top to bottom.
Sealing ring 40 includes card slot 41 and ring-shaped step 42, and head cover 10 is wrapped in rupture pressure disc 20 in sealing ring 40, is prevented
Quick-fried film 20 is arranged on 42 face of ring-shaped step.
20 middle part of rupture pressure disc is connected with 30 middle part of orifice plate by laser spot welding, makes to form one between rupture pressure disc 20 and orifice plate 30
A cavity.The outside of orifice plate 30 and 50 outside of PTC plates are caught in card slot 41, and orifice plate 30 is contacted with PTC plates 50 and is connected, lug 60 and
PTC plates 50 connect on one side away from orifice plate 30.
When the inside of column lithium ion battery is brought rapidly up, internal heat can be by lug 60 in big face at the first time
Product is transferred on PTC plates 50, and PTC plates 50 can inhibit the conducting of electric current due to the rapid rise of temperature at this time, so that preventing temperature
It is more sensitive and accurate that degree raises this process.
20 outer ring of rupture pressure disc is equipped with annular fixing groove, and 10 outside of head cover is caught in annular fixing groove.10 outside of head cover is equipped with
Multiple first solder joints 12, rupture pressure disc 20 are equipped with multiple second solder joints 22, and multiple first solder joint, 12 corresponding matching spot welding connections are multiple
Second solder joint 22.Head cover 10 and the connection of rupture pressure disc 20 is made more preferably to consolidate, efficiently solve causes cylinder due to loose contact
This unstable undesirable element of resistance in lithium ion battery.
Ring-shaped step 42 is equipped with multiple bradyseism boss 421, and bradyseism boss 421 is contacted with rupture pressure disc 20 and is connected, when outside is squeezed
Bear down on one lid 10 when, pressure can be transmitted to by rupture pressure disc 20 on bradyseism boss 421, at this time bradyseism boss 421 can deform upon come
The external pressure applied is eliminated, effectively prevents from being transferred to lug 60 because of external force, lug 60 is caused to scratch column lithium ion battery
Inner core.
10 outer surface of head cover is equipped with erosion resistant coating 13, prevents 10 corrosion and ageing of head cover, prolongs the service life.
When substantial amounts of gas is generated inside column lithium ion battery, gas can sequentially pass through second on PTC plates 50
First through hole 31 on through hole 51 and orifice plate 30 is reached in the cavity that rupture pressure disc 20 is formed with orifice plate 30, gradual with gas
Increase, cavity inside air pressure also becomes larger therewith, and the solder joint between rupture pressure disc 20 and orifice plate 30 is caused to be pulled off to form open circuit, is prevented
Column lithium ion battery continues non-normal working and generates gas.When cavity inside air pressure still increases under off state, gas
Know from experience the explosion-proof line 21 broken through on rupture pressure disc 20, and the external world is discharged to prevent from exploding through the venthole 11 on head cover 10.At this time
The thickness of explosion-proof line 21 needs to be less than the thickness of rupture pressure disc 20 so that internal gas is smoothly discharged.
The present invention provides a kind of column lithium ion battery block, by head cover, rupture pressure disc and orifice plate from top to bottom successively
It stacks, head cover is wrapped in rupture pressure disc in sealing ring, and with being connected in the middle part of orifice plate in the middle part of rupture pressure disc, it is logical that orifice plate offers multiple first
Hole, orifice plate outside are caught in the card slot inside sealing ring, are caught in card slot outside PTC plates, PTC plates are contacted with orifice plate to be connected, PTC
Plate offers the second through hole of multiple cooperation first through hole.When the inside of column lithium ion battery is brought rapidly up, heat
Amount can be transferred in first time large area on PTC plates, and PTC plates can inhibit leading for electric current due to the rapid rise of temperature at this time
It is logical, so that it is more sensitive and accurate to prevent that temperature from raising this process.
Finally it should be noted that the above embodiments are merely illustrative of the technical solutions of the present invention rather than the present invention is protected
The limitation of scope is protected, although being explained in detail with reference to preferred embodiment to the present invention, those of ordinary skill in the art should
Work as understanding, technical scheme can be modified or replaced equivalently, without departing from the reality of technical solution of the present invention
Matter and scope.
Claims (10)
1. a kind of column lithium ion battery block, rupture pressure disc including head cover, equipped with explosion-proof line, equipped with multiple first through hole
Orifice plate, sealing ring, the head cover, rupture pressure disc and orifice plate stack successively from top to bottom, and the head cover is wrapped in sealing with rupture pressure disc
In circle, with being connected in the middle part of orifice plate in the middle part of the rupture pressure disc, orifice plate outside is caught in the card slot inside sealing ring, and feature exists
In,
A PTC plates are further included, are caught in card slot outside the PTC plates, the PTC plates are contacted with orifice plate to be connected, and the PTC plates open up
There is the second through hole of multiple cooperation first through hole.
2. column lithium ion battery block as described in claim 1, which is characterized in that the rupture pressure disc outer ring is equipped with annular
Fixing groove, the head cover outside are caught in annular fixing groove.
3. column lithium ion battery block as claimed in claim 2, which is characterized in that multiple the are equipped with outside the head cover
One solder joint, the rupture pressure disc are equipped with multiple second solder joints, multiple multiple second welderings of first solder joint corresponding matching connection
Point.
4. column lithium ion battery block as claimed in claim 3, which is characterized in that the sealing ring is equipped with an annular table
Rank, the rupture pressure disc are arranged in annular step surface.
5. column lithium ion battery block as claimed in claim 4, which is characterized in that the ring-shaped step is equipped with multiple slow
Boss is shaken, the bradyseism boss is contacted with rupture pressure disc to be connected.
6. such as claim 1-5 any one of them column lithium ion battery blocks, which is characterized in that a lug is further included,
The lug is connected with PTC plates.
7. column lithium ion battery block as claimed in claim 6, which is characterized in that the head cover outer surface is equipped with anti-corrosion
Layer.
8. column lithium ion battery block as claimed in claim 7, which is characterized in that the head cover is central raised into a cone
Shape round platform.
9. column lithium ion battery block as claimed in claim 8, which is characterized in that the round platform side wall offers multiple
Venthole.
10. column lithium ion battery block as claimed in claim 9, which is characterized in that the thickness of the explosion-proof line is less than
The thickness of rupture pressure disc.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711291132.4A CN108091784A (en) | 2017-12-08 | 2017-12-08 | Cylindrical lithium ion battery cap |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711291132.4A CN108091784A (en) | 2017-12-08 | 2017-12-08 | Cylindrical lithium ion battery cap |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108091784A true CN108091784A (en) | 2018-05-29 |
Family
ID=62174733
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711291132.4A Pending CN108091784A (en) | 2017-12-08 | 2017-12-08 | Cylindrical lithium ion battery cap |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108091784A (en) |
Cited By (4)
| 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 |
| CN111816803A (en) * | 2019-04-12 | 2020-10-23 | 惠州市聚鼎电子有限公司 | Battery cap and battery using same |
| CN111816802A (en) * | 2019-04-12 | 2020-10-23 | 惠州市聚鼎电子有限公司 | Battery cap and battery using same |
| JP2021502666A (en) * | 2018-06-04 | 2021-01-28 | エルジー・ケム・リミテッド | Cylindrical rechargeable battery with adhesive containing gas generating material |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102290542A (en) * | 2011-07-13 | 2011-12-21 | 无锡市金杨新型电源有限公司 | Low-resistance lithium ion battery cover cap |
| CN102544397A (en) * | 2010-12-09 | 2012-07-04 | 比亚迪股份有限公司 | Lithium-ion secondary battery |
| JP2012209177A (en) * | 2011-03-30 | 2012-10-25 | Panasonic Corp | Battery |
| CN203562472U (en) * | 2013-08-01 | 2014-04-23 | 广州市番禺华力电池有限公司 | Novel cylindrical lithium-manganese battery |
-
2017
- 2017-12-08 CN CN201711291132.4A patent/CN108091784A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102544397A (en) * | 2010-12-09 | 2012-07-04 | 比亚迪股份有限公司 | Lithium-ion secondary battery |
| JP2012209177A (en) * | 2011-03-30 | 2012-10-25 | Panasonic Corp | Battery |
| CN102290542A (en) * | 2011-07-13 | 2011-12-21 | 无锡市金杨新型电源有限公司 | Low-resistance lithium ion battery cover cap |
| CN203562472U (en) * | 2013-08-01 | 2014-04-23 | 广州市番禺华力电池有限公司 | Novel cylindrical lithium-manganese battery |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2021502666A (en) * | 2018-06-04 | 2021-01-28 | エルジー・ケム・リミテッド | Cylindrical rechargeable battery with adhesive containing gas generating material |
| JP7110536B2 (en) | 2018-06-04 | 2022-08-02 | エルジー エナジー ソリューション リミテッド | Cylindrical secondary battery with adhesive part containing gas generating substance |
| US11581616B2 (en) | 2018-06-04 | 2023-02-14 | Lg Energy Solution, Ltd. | Cylindrical secondary battery having adhesion unit including gas-generating matertial |
| 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 |
| CN111816803A (en) * | 2019-04-12 | 2020-10-23 | 惠州市聚鼎电子有限公司 | Battery cap and battery using same |
| CN111816802A (en) * | 2019-04-12 | 2020-10-23 | 惠州市聚鼎电子有限公司 | Battery cap and battery using same |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20180529 |
|
| RJ01 | Rejection of invention patent application after publication |