CN203826460U - Explosion-proof pressure-relief structure of lithium ion battery - Google Patents
Explosion-proof pressure-relief structure of lithium ion battery Download PDFInfo
- Publication number
- CN203826460U CN203826460U CN201420246241.XU CN201420246241U CN203826460U CN 203826460 U CN203826460 U CN 203826460U CN 201420246241 U CN201420246241 U CN 201420246241U CN 203826460 U CN203826460 U CN 203826460U
- Authority
- CN
- China
- Prior art keywords
- explosion
- proof
- lithium ion
- battery
- relief structure
- 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 - Lifetime
Links
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 title claims abstract description 23
- 229910001416 lithium ion Inorganic materials 0.000 title claims abstract description 23
- 238000007789 sealing Methods 0.000 claims description 14
- 230000009172 bursting Effects 0.000 claims description 8
- 238000005242 forging Methods 0.000 claims description 4
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 2
- 229910052782 aluminium Inorganic materials 0.000 claims description 2
- 239000004411 aluminium Substances 0.000 claims description 2
- 238000003466 welding Methods 0.000 claims description 2
- 230000000694 effects Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 239000003792 electrolyte Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000003960 organic solvent Substances 0.000 description 1
Classifications
-
- 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
Abstract
The utility model discloses an explosion-proof pressure-relief structure of a lithium ion battery. The structure comprises a battery case, a positive post, a negative post and an explosion-proof cap, wherein the positive post and the negative post are installed at positive and negative pole ends of the battery case respectively in a forged manner, the explosion-proof cap is installed in the positive post, the positive post and the negative post are welded with positive and negative tugs of a cell in the battery respectively, and the explosion-proof cap consists of an explosion-proof screw, a spring and a seal ring. Compared with the prior art, the explosion-proof pressure-relief structure of the lithium ion battery has the advantages that the design that the spring and the seal ring are matched is used, so that when the inner pressure of the battery is too high, the inner air pressure can burst through the seal ring propped against the spring, the air enters an accommodating space where the spring is located and is discharged through an exhaust hole in one end surface of the explosion-proof screw, and the pressure in the battery is always kept within a reasonable and safe range.
Description
[technical field]
The utility model relates to lithium ion battery field, relates in particular to a kind of explosion-proof relief structure of lithium ion battery.
[background technology]
Cylindrical lithium ion battery is from preliminary filling, and inside battery will produce a certain amount of gas, and along with the increase of battery access times, internal pressure increases gradually.And battery is when carrying out high-multiplying power discharge and quick charge, inside battery can heat up rapidly, maximum temperature can be over 120 ℃, if the former air that pre-exists of inside battery, meeting expanded by heating, organic solvent also can volatilize simultaneously, further increases the pressure of inside battery, and the high pressure of inside battery will bring very large hidden danger to the fail safe of battery.
Traditional battery is to use pressure relief valve, once internal pressure is excessive and surpass certain standard value, pressure relief valve can be opened, inner cell polar ear disconnects, although guaranteed like this overall security of battery pack, but oneself so scraps the battery of opening, and after opening, battery core inside has electrolyte outflow, will play corrosion impact to battery appearance.
In view of above drawback, be necessary to provide a kind of explosion-proof relief structure of lithium ion battery to overcome above-mentioned defect in fact.
[utility model content]
The purpose of this utility model is to provide a kind of explosion-proof relief structure of lithium ion battery, by repeating to open the pressure that closed relief valve keeps inside battery, the fail safe that greatly improves battery.
To achieve these goals, the utility model adopts following technical scheme: a kind of explosion-proof relief structure of lithium ion battery, it comprises battery container, positive terminal, negative terminal, preventing bursting cap, described positive terminal and negative terminal forging and stamping formula are respectively arranged on the positive and negative end of battery container, described preventing bursting cap is arranged in positive terminal, and together with described positive terminal arrives with battery core both positive and negative polarity tab welding in battery respectively with negative terminal, described preventing bursting cap is comprised of explosion-proof screw, spring and sealing ring.
As a kind of improvement of the explosion-proof relief structure of a kind of lithium ion battery of the utility model, in the middle of described explosion-proof screw end face, have hexagonal fixing hole, both sides have steam vent;
As a kind of improvement of the explosion-proof relief structure of a kind of lithium ion battery of the utility model, described sealing ring is formed by the aluminium sheet of 0.3-1.0mm and the compacting of the rubber slab of 0.5-1.2mm;
As a kind of improvement of the explosion-proof relief structure of a kind of lithium ion battery of the utility model, described spring fitting between explosion-proof screw and sealing ring, embedded being installed together of inversed cone ring in described sealing ring and positive terminal;
As a kind of improvement of the explosion-proof relief structure of a kind of lithium ion battery of the utility model, the external screw thread footpath of described positive terminal is identical with the internal thread footpath of negative terminal.
The beneficial effects of the utility model are: when cell internal pressure is normal, sealing ring seals battery owing to being subject to the power effect of spring, once interior pressure is when excessive, air pressure inside can be washed the sealing ring being withstood by spring open, gas enters the residing receiving space of spring, and discharge through the steam vent of explosion-proof screw end face, to guarantee that the pressure in battery remains in reasonable safe scope.
[accompanying drawing explanation]
Fig. 1 is the overall schematic of the explosion-proof relief structure of a kind of lithium ion battery of the utility model;
Fig. 2 is the positive terminal cutaway view of the explosion-proof relief structure of a kind of lithium ion battery of the utility model;
Fig. 3 is the negative terminal cutaway view of the explosion-proof relief structure of a kind of lithium ion battery of the utility model.
[embodiment]
Please refer to shown in Fig. 1 to Fig. 3, below in conjunction with case study on implementation, the utility model is described in further detail.
Execution mode is such: the preventing bursting cap of battery is arranged in positive terminal 24, preventing bursting cap is comprised of the explosion-proof screw 25 with hexagonal fixing hole 26 and steam vent 27, sealing ring 21 and spring 23, by explosion-proof screw 25 and spring 23 by embedded being installed together of inversed cone ring 22 in sealing ring 21 and positive terminal 24 inwalls, forging and stamping formula of positive terminal is arranged on the positive terminal of battery case 1, and by lug 3, positive terminal 24 is crossed to flow 5 with the positive pole of battery core 2 and link together to conduct electricity, 31 forging and stamping formulas of negative terminal are arranged on the negative pole end of battery case 1.
Its operation principle is: when cell internal pressure is normal, sealing ring seals battery owing to being subject to the power effect of spring, once interior pressure is when excessive, air pressure inside can be washed the sealing ring being withstood by spring open, gas enters the residing receiving space of spring, and discharge through the steam vent of explosion-proof screw end face, to guarantee that the pressure in battery remains in reasonable safe scope.
The explosion-proof relief structure of a kind of lithium ion battery of the utility model, be not restricted to described in specification and execution mode, therefore for the personnel of familiar field, can easily realize additional advantage and modification, therefore in the situation that do not deviate from the spirit and scope of the universal that claim and equivalency range limit, the utility model is not limited to specific details, representational equipment and illustrates here and the examples shown of describing.
Claims (5)
1. the explosion-proof relief structure of a lithium ion battery, it comprises battery container, positive terminal, negative terminal, preventing bursting cap, described positive terminal and negative terminal forging and stamping formula are respectively arranged on the positive and negative end of battery container, described preventing bursting cap is arranged in positive terminal, described positive terminal is characterized in that: described preventing bursting cap is comprised of explosion-proof screw, spring and sealing ring together with arriving with battery core both positive and negative polarity tab welding in battery respectively with negative terminal.
2. the explosion-proof relief structure of a kind of lithium ion battery according to claim 1, is characterized in that: described explosion-proof screw end face centre has hexagonal fixing hole, both sides have steam vent.
3. the explosion-proof relief structure of a kind of lithium ion battery according to claim 1, is characterized in that: sealing ring is formed by the aluminium sheet of 0.3-1.0mm and the compacting of the rubber slab of 0.5-1.2mm.
4. the explosion-proof relief structure of a kind of lithium ion battery according to claim 1, is characterized in that: spring fitting between explosion-proof screw and sealing ring, embedded being installed together of inversed cone ring in described sealing ring and positive terminal.
5. the explosion-proof relief structure of a kind of lithium ion battery according to claim 1, is characterized in that: the external screw thread footpath of positive terminal is identical with the internal thread footpath of negative terminal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420246241.XU CN203826460U (en) | 2014-05-06 | 2014-05-06 | Explosion-proof pressure-relief structure of lithium ion battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420246241.XU CN203826460U (en) | 2014-05-06 | 2014-05-06 | Explosion-proof pressure-relief structure of lithium ion battery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203826460U true CN203826460U (en) | 2014-09-10 |
Family
ID=51481929
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420246241.XU Expired - Lifetime CN203826460U (en) | 2014-05-06 | 2014-05-06 | Explosion-proof pressure-relief structure of lithium ion battery |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203826460U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109546051A (en) * | 2018-11-02 | 2019-03-29 | 襄阳全系康动力机械有限责任公司 | A kind of mine anti-explosion power packet |
| CN112421175A (en) * | 2020-11-09 | 2021-02-26 | 浙江野马电池股份有限公司 | Explosion-proof alkali-manganese cell |
-
2014
- 2014-05-06 CN CN201420246241.XU patent/CN203826460U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109546051A (en) * | 2018-11-02 | 2019-03-29 | 襄阳全系康动力机械有限责任公司 | A kind of mine anti-explosion power packet |
| CN112421175A (en) * | 2020-11-09 | 2021-02-26 | 浙江野马电池股份有限公司 | Explosion-proof alkali-manganese cell |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| PP01 | Preservation of patent right |
Effective date of registration: 20180428 Granted publication date: 20140910 |
|
| PP01 | Preservation of patent right | ||
| PD01 | Discharge of preservation of patent |
Date of cancellation: 20210428 Granted publication date: 20140910 |
|
| PD01 | Discharge of preservation of patent | ||
| PP01 | Preservation of patent right |
Effective date of registration: 20210428 Granted publication date: 20140910 |
|
| PP01 | Preservation of patent right |