CN209374555U - A kind of battery pole ear - Google Patents
A kind of battery pole ear Download PDFInfo
- Publication number
- CN209374555U CN209374555U CN201822049789.6U CN201822049789U CN209374555U CN 209374555 U CN209374555 U CN 209374555U CN 201822049789 U CN201822049789 U CN 201822049789U CN 209374555 U CN209374555 U CN 209374555U
- Authority
- CN
- China
- Prior art keywords
- tab portion
- tab
- battery
- pole ear
- battery pole
- 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.)
- Active
Links
- 238000000034 method Methods 0.000 abstract description 13
- 229910052744 lithium Inorganic materials 0.000 abstract description 12
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 abstract description 11
- 238000004880 explosion Methods 0.000 abstract description 7
- 239000002360 explosive Substances 0.000 abstract 1
- 239000000084 colloidal system Substances 0.000 description 4
- 238000009413 insulation Methods 0.000 description 4
- 229910052751 metal Inorganic materials 0.000 description 4
- 239000002184 metal Substances 0.000 description 4
- 230000005611 electricity Effects 0.000 description 3
- 229910052782 aluminium Inorganic materials 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000002985 plastic film Substances 0.000 description 2
- 229920006255 plastic film Polymers 0.000 description 2
- 229910000733 Li alloy Inorganic materials 0.000 description 1
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 description 1
- 238000007792 addition Methods 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000008151 electrolyte solution Substances 0.000 description 1
- 238000005538 encapsulation Methods 0.000 description 1
- 238000004146 energy storage Methods 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000001989 lithium alloy Substances 0.000 description 1
- 229910001416 lithium ion Inorganic materials 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000007773 negative electrode material Substances 0.000 description 1
- 239000000243 solution 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
Landscapes
- Connection Of Batteries Or Terminals (AREA)
- Secondary Cells (AREA)
Abstract
The utility model provides a kind of battery pole ear, belongs to field of mechanical technique.It solves existing battery pole ear short circuit explosive, the problem of safety difference.This battery pole ear, including tab ontology, the tab ontology are equipped with gel, and the tab ontology includes the first tab portion and the second tab portion, and the thickness in first tab portion is greater than the thickness in the second tab portion.This battery pole ear can be blown in lithium battery positive and negative anodes short circuit from the second tab portion, prevented short-circuit process from carrying out, to avoid battery core explosion on fire, improved the security performance of battery.
Description
Technical field
The utility model belongs to field of mechanical technique, is related to a kind of battery pole ear.
Background technique
It by lithium metal or lithium alloy is negative electrode material, using the battery of non-aqueous electrolytic solution that lithium battery, which is a kind of,.With
For lithium ion battery in the application extension of electric car and energy storage industry, people increasingly pay attention to the safety problem of battery core.Battery
Divide positive and negative anodes, tab is exactly the metallic conductor for positive and negative anodes being extracted from battery core, and popular says battery positive and negative polarities
Ear be contact point when carrying out charge and discharge.One tab is that metal tape is clipped in the middle by two panels gel, tab
Glue is the part insulated on tab, prevents that short circuit occurs between metal tape and aluminum plastic film when its effect is cell package, and
Being bonded together when encapsulation by heating (140 DEG C or so) and aluminum plastic film hot-melting sealed prevents leakage.
Existing battery tab structure, as Chinese patent application (application number: 201420493645.9) discloses a kind of electricity
Pond tab, including metal tape, colloid, the metal tape include battery exposed parts, colloid covering part, battery built-in part,
It is characterized in that, the junction in the end face of the left and right of the colloid covering part two and former and later two faces is equipped with chamfering or separate
The fillet in colloid direction.Existing lithium battery generally produces very big short circuit current in the case where positive and negative anodes accidental short circuit, holds
Battery catches fire, explosion are easily led to, safety is poor.
Summary of the invention
The purpose of this utility model is the presence of the above problem in view of the prior art, proposes a kind of battery pole ear, this reality
With it is novel the technical problem to be solved is that: how to improve the security performance of battery.
The purpose of this utility model can be realized by the following technical scheme: a kind of battery pole ear, including tab ontology, institute
Tab ontology is stated equipped with gel, which is characterized in that the tab ontology includes the first tab portion and the second tab portion, described
The thickness in the first tab portion is greater than the thickness in the second tab portion.
This battery pole ear has made Curve guide impeller by this body structure to tab, is set as the first tab portion and the second tab
Portion, and the thickness in the first tab portion is greater than the thickness in the second tab portion, so that the overcurrent in the second tab portion is less than the first pole
Ear generates very big electric current in lithium battery positive and negative anodes short circuit, and the overcurrent in the second tab portion is relatively small, therefore, high current
By enabling lithium battery pole ear to be blown from the second tab portion, prevent short-circuit process from carrying out, improve the peace of battery
Full performance.
In above-mentioned battery pole ear, first tab portion and the second tab portion in the form of sheets, first tab portion
It is integrally formed with the second tab portion and forms step in junction.The the first tab portion and the second tab portion of sheet are in junction shape
At step, so that a gradient is formd on section between the two, it, can be from the second tab in lithium battery positive and negative anodes short circuit
It is blown at portion, prevents short-circuit process from carrying out, to avoid battery core explosion on fire, improve the security performance of battery.
In above-mentioned battery pole ear, the overcurrent in second tab portion be the overcurrent in first tab portion 50%~
80%.In positive and negative anodes short circuit, very big electric current will be generated, specific electric current is I=U/ (r+R)；Wherein U is the open circuit electricity of battery core
Pressure, R are external short circuit resistance, and r is battery core internal resistance.If the overcurrent in the second tab portion is too big, anode ear cannot when battery core short circuit
It disconnects in time, if overcurrent is too small, then intensity is too low in actual fabrication and use process.It can guarantee to use by above-mentioned setting
While intensity requirement, in lithium battery positive and negative anodes short circuit, can be blown from the second tab portion, prevent short-circuit process into
Row, to avoid battery core explosion on fire, improves the security performance of battery.
In above-mentioned battery pole ear, the gel is pasted onto second tab portion and is located at close to the first tab
The junction in portion and the second tab portion.Gel is with having insulation effect, by above-mentioned setting, in lithium battery positive and negative anodes short circuit
When, the second tab portion can be blown at gel, and the insulation after guaranteeing fusing prevents short-circuit process from carrying out, to avoid
Battery core explosion on fire, improves the security performance of battery.
Compared with prior art, this battery pole ear has the advantage that the first tab portion and the second tab portion on section
A gradient is formd, in lithium battery positive and negative anodes short circuit, the second tab portion can be blown at gel, after guaranteeing fusing
Insulation, prevent short-circuit process carry out, to avoid battery core explosion on fire, improve the security performance of battery.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of this battery pole ear.
In figure, 1, tab ontology；1a, the first tab portion；1b, the second tab portion；2, gel.
Specific embodiment
It is specific embodiment of the utility model and in conjunction with attached drawing below, the technical solution of the utility model is made further
Description, but the utility model is not limited to these examples.
As shown in Figure 1, this battery pole ear, including tab ontology 1, tab ontology 1 are equipped with gel 2, tab ontology 1 is wrapped
Include the first tab portion 1a and the second tab portion 1b, the first tab portion 1a and the second tab portion 1b in the form of sheets, the first tab portion 1a
It is integrally formed with the second tab portion 1b, the thickness of the first tab portion 1a is greater than the thickness of the second tab portion 1b and is formed in junction
Step so that a gradient is formd on section between the two, the overcurrent of the second tab portion 1b less than the first tab portion 1a,
It when lithium battery positive and negative anodes short circuit, can be blown from the second tab portion 1b, short-circuit process is prevented to carry out, so that battery core be avoided to rise
It is hot fried, improve the security performance of battery.
It further says, gel 2 is pasted on the second tab portion 1b and is located at close to the first tab portion 1a and the second pole
The junction of ear 1b, in lithium battery positive and negative anodes short circuit, the second tab portion 1b can be blown at gel 2, be guaranteed molten
The insulation having no progeny prevents short-circuit process from carrying out, to avoid battery core explosion on fire, improves the security performance of battery.
Furthermore, in positive and negative anodes short circuit, very big electric current will be generated, specific electric current is I=U/ (r+R)；Its
Middle U is the open-circuit voltage of battery core, and R is external short circuit resistance, and r is battery core internal resistance.If the overcurrent of the second tab portion 1b is too big, electricity
Anode ear cannot disconnect in time when core short circuit, and if overcurrent is too small, then intensity is too low in actual fabrication and use process, therefore,
The overcurrent of two tab portion 1b is designed as the 50%~80% of the overcurrent of the first tab portion 1a.
The specific embodiments described herein are merely examples of the spirit of the present invention.The utility model institute
Belonging to those skilled in the art can make various modifications or additions to the described embodiments or using similar
Mode substitute, but without departing from the spirit of the present application or beyond the scope of the appended claims.
Claims (3)
1. a kind of battery pole ear, including tab ontology (1), the tab ontology (1) is equipped with gel (2), which is characterized in that
The tab ontology (1) includes that the first tab portion (1a) and the second tab portion (1b), the thickness in first tab portion (1a) are big
Thickness in the second tab portion (1b)；The gel (2) is pasted onto second tab portion (1b) and is located at close to first
The junction in tab portion (1a) and the second tab portion (1b).
2. battery pole ear according to claim 1, which is characterized in that first tab portion (1a) and the second tab portion
(1b) in the form of sheets, first tab portion (1a) and the second tab portion (1b) are integrally formed and form step in junction.
3. battery pole ear according to claim 1, which is characterized in that the overcurrent in second tab portion (1b) is described the
The 50%~80% of the overcurrent in one tab portion (1a).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822049789.6U CN209374555U (en) | 2018-12-07 | 2018-12-07 | A kind of battery pole ear |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822049789.6U CN209374555U (en) | 2018-12-07 | 2018-12-07 | A kind of battery pole ear |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209374555U true CN209374555U (en) | 2019-09-10 |
Family
ID=67831610
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201822049789.6U Active CN209374555U (en) | 2018-12-07 | 2018-12-07 | A kind of battery pole ear |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209374555U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114069165A (en) * | 2021-11-16 | 2022-02-18 | 远景动力技术(江苏)有限公司 | Battery core tab and battery core |
| WO2023155616A1 (en) * | 2022-02-18 | 2023-08-24 | 惠州亿纬锂能股份有限公司 | Lithium battery |
-
2018
- 2018-12-07 CN CN201822049789.6U patent/CN209374555U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114069165A (en) * | 2021-11-16 | 2022-02-18 | 远景动力技术(江苏)有限公司 | Battery core tab and battery core |
| WO2023155616A1 (en) * | 2022-02-18 | 2023-08-24 | 惠州亿纬锂能股份有限公司 | Lithium battery |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20240426 Address after: No. 14 Longxing Road, Anliang Community, Yuanshan Street, Longgang District, Shenzhen City, Guangdong Province, 518115 Patentee after: Shenzhen Daxing Nickel Cobalt Technology Co.,Ltd. Country or region after: China Address before: 317599 No. 169 Jinping Avenue, Chengdong Street, Wenling City, Taizhou City, Zhejiang Province Patentee before: TAIZHOU QIANJIANG NEW ENERGY RESEARCH INSTITUTE Co.,Ltd. Country or region before: China |
|
| TR01 | Transfer of patent right |