CN105449148A - Lithium battery tab with overcurrent production - Google Patents
Lithium battery tab with overcurrent production Download PDFInfo
- Publication number
- CN105449148A CN105449148A CN201510862603.7A CN201510862603A CN105449148A CN 105449148 A CN105449148 A CN 105449148A CN 201510862603 A CN201510862603 A CN 201510862603A CN 105449148 A CN105449148 A CN 105449148A
- Authority
- CN
- China
- Prior art keywords
- metal tape
- lithium battery
- metal
- overcurrent protection
- ptc material
- 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
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
- H01M50/50—Current conducting connections for cells or batteries
- H01M50/531—Electrode connections inside a battery casing
-
- 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
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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
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Connection Of Batteries Or Terminals (AREA)
Abstract
The invention discloses a lithium battery tab with overcurrent protection. The lithium battery tab comprises a first metal tape and a second metal tape, wherein the first metal tape and the second metal tape are in overlap joint in a front and back way, low concave parts which are opposite to each other are respectively arranged at positions where the first metal tape and the second metal tape are in overlap joint, a positive temperature coefficient (PTC) material is arranged on the lower concave part of the first metal tape or the second metal tape, and the first metal tape and the second metal tape are electrically connected through the PTC material. In the lithium battery tab with overcurrent protection, disclosed by the invention, the PTC material is arranged between the metal tapes and forms a serial-connected thermistor between the metal tapes, the resistance of the PTC material becomes larger when a lithium battery encounters the situation of overcurrent or overheat during use, so that the interior of the lithium battery cannot be affected; and the PTC can be restored to an original state after being cooled and can be conveniently reused. By the lithium battery tab with overcurrent protection, the service lifetime of the lithium battery can be effectively prolonged, and the safety performance of the lithium battery can be effectively improved.
Description
Technical field
The present invention relates to field of lithium, particularly relate to a kind of lithium battery pole ear with overcurrent protection.
Background technology
In the present age, lithium battery is widely used on electronic product, and the security performance of lithium battery receives much concern.The lug of lithium battery is responsible for connecting battery electrode and electrode interior; when meeting circuit overcurrent or battery is overheated; if the lug of battery can provide overcurrent protection and overtemperature protection; the connection of timely cut-out battery and external circuit; then can protect inside battery not by the impact of external circuit; play the effect of protection battery, improve useful life and the security performance of battery.
Summary of the invention
In order to solve the problems of the technologies described above, the object of the present invention is to provide a kind of lithium battery pole ear with overcurrent protection, for lithium battery provides overcurrent protection, overtemperature protection, improve useful life and the security performance of lithium battery.
The present invention is the technical scheme solving the employing of its technical problem:
A kind of lithium battery pole ear with overcurrent protection; comprise the first metal tape, the second metal tape; overlap before and after described first metal tape and the second metal tape; described first metal tape is respectively arranged with relative lower concave part with the second metal tape in lap-joint; the lower concave part of described first metal tape or the second metal tape is provided with ptc material, and the first metal tape and the second metal tape are electrically connected by ptc material.
As the further improvement of technique scheme, the lap-joint of described first metal tape and the second metal tape is provided with dielectric film.
As the further improvement of technique scheme, described first metal tape or the second metal tape are provided with dielectric film.
As the further improvement of technique scheme, described first metal tape and the second metal tape are same metal.
As the further improvement of technique scheme, described first metal tape and the second metal tape are dissimilar metal.
As the further improvement of technique scheme, described first metal tape is nickel strap, and described second metal tape is aluminium strip.
The invention has the beneficial effects as follows:
The lithium battery pole ear of band overcurrent protection of the present invention is provided with ptc material between two strip metal bands, and metal tape is electrically connected by ptc material, and ptc material forms the thermistor of series connection between metal tape.When lithium battery normally uses, the resistance of ptc material is less, and when lithium battery in use runs into overcurrent or overheated situation, the temperature of ptc material raises, resistance sharply becomes large, limit electric current, play the effect of overcurrent protection and overtemperature protection, protection lithium battery interior is unaffected; Can initial conditions be returned to after ptc material cooling, be convenient to reuse.The lithium battery pole ear of band overcurrent protection of the present invention effectively improves useful life and the security performance of battery.
Accompanying drawing explanation
Be described further below in conjunction with accompanying drawing and example.
Fig. 1 is the structural representation of the lithium battery pole ear of band overcurrent protection of the present invention.
Embodiment
With reference to Fig. 1; a kind of lithium battery pole ear with overcurrent protection provided by the invention; comprise the first metal tape 1, second metal tape 2 and dielectric film 4; overlap before and after first metal tape 1 and the second metal tape 2; first metal tape 1 or the second metal tape 2 are provided with ptc material 3 in lap-joint; first metal tape 1 and the second metal tape 2 are electrically connected by ptc material 3, and dielectric film 4 covers the lap-joint of the first metal tape 1 and the second metal tape 2.
The thickness of described first metal tape 1 and the second metal tape 2 is generally between 0.7mm to 1.2mm, (thickness here refers to a kind of thickness of metal tape, or two kinds of metal tape thickness sums, the thickness of single lug metal tape that my department is producing lug is at present 0.1mm) thickness of the lap-joint of the first metal tape 1 and the second metal tape 2 is preferably at 2mm, unaffected with the stickup of the dielectric film 4 ensureing lap-joint.Therefore, described first metal tape 1 is respectively arranged with relative lower concave part 11,21 with the second metal tape 2 in lap-joint, and the thickness of lower concave part 11,21 is less than the thickness of other positions of metal tape; The lower concave part 11 of the first metal tape 1 or the lower concave part 21 of the second metal tape 2 are provided with one deck ptc material 3, and both are electrically connected by ptc material 3.
In addition, dielectric film 4 also can be arranged on other positions on the first metal tape 1 or the second metal tape 2.
Further, described first metal tape 1 and the second metal tape 2 can be same metal or dissimilar metal.As wherein a kind of Common examples, described first metal tape 1 is nickel strap, and the second metal tape 2 is aluminium strip.
The lithium battery pole ear of band overcurrent protection of the present invention is provided with ptc material 3 between two strip metal bands, and metal tape is electrically connected by ptc material 3, and ptc material 3 forms the thermistor of series connection between metal tape.When lithium battery normally uses, the resistance of ptc material 3 is less, and when lithium battery in use runs into overcurrent or overheated situation, the temperature of ptc material 3 raises, resistance sharply becomes large, limit electric current, play the effect of overcurrent protection and overtemperature protection, protection lithium battery interior is unaffected; Ptc material 3 can return to initial conditions after cooling, and is convenient to reuse.The lithium battery pole ear of band overcurrent protection of the present invention effectively improves useful life and the security performance of battery.
The above, just preferred embodiment of the present invention, the present invention is not limited to above-mentioned execution mode, as long as it reaches technique effect of the present invention with identical means, all should belong to protection scope of the present invention.
Claims (6)
1. the lithium battery pole ear with overcurrent protection, it is characterized in that: comprise the first metal tape (1), the second metal tape (2), overlap before and after described first metal tape (1) and the second metal tape (2), described first metal tape (1) is respectively arranged with relative lower concave part (11 with the second metal tape (2) in lap-joint; 21), the lower concave part (11 of described first metal tape (1) or the second metal tape (2); 21) be provided with ptc material (3) on, the first metal tape (1) and the second metal tape (2) are electrically connected by ptc material (3).
2. a kind of lithium battery pole ear with overcurrent protection according to claim 1, is characterized in that: the lap-joint of described first metal tape (1) and the second metal tape (2) is provided with dielectric film (4).
3. a kind of lithium battery pole ear with overcurrent protection according to claim 1, is characterized in that: described first metal tape (1) or the second metal tape (2) are provided with dielectric film (4).
4. a kind of lithium battery pole ear with overcurrent protection according to Claims 2 or 3, is characterized in that: described first metal tape (1) and the second metal tape (2) are same metal.
5. a kind of lithium battery pole ear with overcurrent protection according to Claims 2 or 3, is characterized in that: described first metal tape (1) and the second metal tape (2) are dissimilar metal.
6. a kind of lithium battery pole ear with overcurrent protection according to claim 5, is characterized in that: described first metal tape (1) is nickel strap, and described second metal tape (2) is aluminium strip.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510862603.7A CN105449148A (en) | 2015-11-30 | 2015-11-30 | Lithium battery tab with overcurrent production |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510862603.7A CN105449148A (en) | 2015-11-30 | 2015-11-30 | Lithium battery tab with overcurrent production |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105449148A true CN105449148A (en) | 2016-03-30 |
Family
ID=55559116
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510862603.7A Pending CN105449148A (en) | 2015-11-30 | 2015-11-30 | Lithium battery tab with overcurrent production |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105449148A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108615590A (en) * | 2018-04-27 | 2018-10-02 | 湖南丰源业翔晶科新能源股份有限公司 | A kind of composite thermistor material, thermistor, temperature-sensitive lug and lithium ion battery |
| CN111509181A (en) * | 2020-04-20 | 2020-08-07 | 海口博澳国兴新能源科技有限公司 | Battery tab and preparation method thereof |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102011002659A1 (en) * | 2011-01-13 | 2012-07-19 | Sb Limotive Company Ltd. | Battery cell i.e. lithium ion battery cell, for driving propulsion system of e.g. electric vehicle, has positive temperature coefficient resistor element arranged at waveguide shim, and electrical short circuit formed between electrodes |
| CN203242692U (en) * | 2013-05-07 | 2013-10-16 | 东莞新能源科技有限公司 | Lithium ion battery tab structure |
| CN203277543U (en) * | 2013-05-02 | 2013-11-06 | 东莞新能源科技有限公司 | Soft package lithium ion battery and pole lug thereof |
| CN203631652U (en) * | 2013-12-02 | 2014-06-04 | 深圳市慧通天下科技股份有限公司 | Lithium ion battery tab connecting structure and lithium ion battery |
| CN205194769U (en) * | 2015-11-30 | 2016-04-27 | 江门市拓联电子科技有限公司 | Take overcurrent protection's lithium battery tab |
-
2015
- 2015-11-30 CN CN201510862603.7A patent/CN105449148A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102011002659A1 (en) * | 2011-01-13 | 2012-07-19 | Sb Limotive Company Ltd. | Battery cell i.e. lithium ion battery cell, for driving propulsion system of e.g. electric vehicle, has positive temperature coefficient resistor element arranged at waveguide shim, and electrical short circuit formed between electrodes |
| CN203277543U (en) * | 2013-05-02 | 2013-11-06 | 东莞新能源科技有限公司 | Soft package lithium ion battery and pole lug thereof |
| CN203242692U (en) * | 2013-05-07 | 2013-10-16 | 东莞新能源科技有限公司 | Lithium ion battery tab structure |
| CN203631652U (en) * | 2013-12-02 | 2014-06-04 | 深圳市慧通天下科技股份有限公司 | Lithium ion battery tab connecting structure and lithium ion battery |
| CN205194769U (en) * | 2015-11-30 | 2016-04-27 | 江门市拓联电子科技有限公司 | Take overcurrent protection's lithium battery tab |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108615590A (en) * | 2018-04-27 | 2018-10-02 | 湖南丰源业翔晶科新能源股份有限公司 | A kind of composite thermistor material, thermistor, temperature-sensitive lug and lithium ion battery |
| CN111509181A (en) * | 2020-04-20 | 2020-08-07 | 海口博澳国兴新能源科技有限公司 | Battery tab and preparation method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20160330 |
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| RJ01 | Rejection of invention patent application after publication |