CN203242692U - Lithium ion battery tab structure - Google Patents
Lithium ion battery tab structure Download PDFInfo
- Publication number
- CN203242692U CN203242692U CN2013202396184U CN201320239618U CN203242692U CN 203242692 U CN203242692 U CN 203242692U CN 2013202396184 U CN2013202396184 U CN 2013202396184U CN 201320239618 U CN201320239618 U CN 201320239618U CN 203242692 U CN203242692 U CN 203242692U
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- China
- Prior art keywords
- tab
- ptc thermistor
- lug
- lithium ion
- head
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- 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
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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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Abstract
The utility model belongs to the field of lithium ion batteries and in particular relates to a lithium ion battery tab structure. The lithium ion battery tab structure comprises a head tab, a tail tab, a PTC (Positive Temperature Coefficient) thermistor and a sealing ring, wherein the PTC thermistor is in series connected between the head tab and the tail tab; one end of the head tab is electrically connected with one end of the tail tab by the PTC thermistor; the other end of the head tab extends out of the sealing ring and is electrically connected with an external circuit; the other end of the tail tab is welded with a current collector. The tab structure is simple to operate, easy to machine, quick in induction and unlikely to be damaged by external force; when the battery is over-heated or the current is extremely large, the PTC thermistor which is in series connected between the head tab and the tail tab can be used for quickly sensing the resistance increase to switch off the circuit, so that the battery safety is improved; moreover, the tab has a restorable protective function.
Description
Technical field
The utility model belongs to the lithium ion battery field, relates in particular to a kind of lithium ion cell polar ear structure.
Background technology
Along with a large amount of uses of lithium ion battery on electronic product; energy content of battery density improves constantly; the fail safe of battery needs further to strengthen; especially for battery capacity greater than 8Ah's; if because the situations such as short circuit have appearred overcharging in improper use; there is serious potential safety hazard in battery; for the fail safe of protecting battery generally can be at the outside installed protection device of battery core; abused such as short circuit when battery and to be overcharged when causing battery-heating; heat conducts to external protector by battery main body; circuit is cut off in the external protector action when reaching uniform temperature, thereby plays a protective role.When outside batteries protective circuit element was abused dismounting or run into the situations such as the smooth outer member induction of heat conduction is untimely, battery core lost outer protection and has increased potential safety hazard.Disclose PTC in the Chinese patent 03223363.9 and placed inside battery, and a PTC wherein lead-in wire is connected with collector, another lead-in wire and battery be external draws that wire is connected or directly as the wire of drawing of battery, although this patent has played the safeguard protection effect, wire and collector be connected process operation inconvenience; Provide in the Chinese patent 200420056421.8 the lug hot melt material has been compound to lug on the shutoff position of PTC, although this method can be saved the space, inside and outside of battery, but owing to will inevitably have temperature difference inside and outside the battery, the variations in temperature that can not in time monitor battery because of PTC in this structure can not in time be worked, and causes battery to have potential safety hazard.
The utility model content
The purpose of this utility model is: for the deficiencies in the prior art; and provide a kind of lithium ion cell polar ear structure; the processing simple to operate, easy of this extreme ear structure, induction rapidly, be not subject to external strength and damage; and this lug defencive function has restorability, improved the fail safe of battery.
For achieving the above object, the utility model adopts following technical scheme: a kind of lithium ion cell polar ear structure, comprise head lug, afterbody lug, PTC thermistor and sealing ring, described PTC thermistor is series between described head lug and the described afterbody lug, and an end of described head lug is electrically connected with an end of described afterbody lug by described PTC thermistor, the other end of described head lug stretches out in sealing ring and is electrically connected with external circuit, the other end of described afterbody lug and collector welding.
The distance of the described sealing ring of described PTC thermistor distance is 3 ~ 7mm.
The distance of the described sealing ring of described PTC thermistor distance is 5 ~ 6mm.
The surface of described PTC thermistor is coated with the PP thin layer.
The beneficial effects of the utility model are: the utility model comprises head lug, afterbody lug, PTC thermistor and sealing ring, the PTC thermistor is series between head lug and the afterbody lug, and an end of head lug is electrically connected with an end of afterbody lug by the PTC thermistor, the other end of head lug stretches out in sealing ring and is electrically connected with external circuit, the other end of afterbody lug and collector welding.The processing simple to operate, easy of this extreme ear structure, induction rapidly, be not subject to external strength and damage, when overheated or electric current is excessive when battery, be arranged at PTC thermistor rapidly temperature-sensitive and open circuit between head lug and the afterbody lug, improve battery security; When battery temperature and electric current recovered normal, the PTC thermistor that is series between head lug and the afterbody lug can return to normal resistance values, and battery can recover normal use.
Description of drawings
Fig. 1 is structural representation of the present utility model.
Embodiment
Below in conjunction with embodiment and Figure of description, the utility model is described in further detail, but execution mode of the present utility model is not limited to this.
As shown in Figure 1, a kind of lithium ion cell polar ear structure, comprise head lug 1, afterbody lug 2, PTC thermistor 3 and sealing ring 4, PTC thermistor 3 is series between head lug 1 and the afterbody lug 2, and an end of head lug 1 is electrically connected with an end of afterbody lug 2 by PTC thermistor 3, the other end of head lug 1 stretches out in sealing ring 4 and is electrically connected with external circuit, the other end of afterbody lug 2 and collector welding, such extreme ear structure can be arranged on the negative lug of positive pole ear or the lithium ion battery of lithium ion battery, also can be arranged to simultaneously such structure by two lugs.
Preferably, PTC thermistor 3 is 3 ~ 7mm apart from the distance of sealing ring 4, and the hyperthermia radiation when avoiding owing to sealing causes 3 actions of PTC thermistor.
More excellent, PTC thermistor 3 is 5 ~ 6mm apart from the distance of sealing ring 4.
The surface of PTC thermistor 3 is coated with PP thin layer 5, the head lug 1 at PTC thermistor 3 two ends and the material of afterbody lug 2 be aluminium just very, negative pole can be selected from copper or nickel, one end of head lug 1 and 3 welding of PTC thermistor, one end of afterbody lug 2 and 3 welding of PTC thermistor, PP thin layer 5 can be avoided electrolyte corrosion PTC thermistor 3, and has avoided head lug 1 and afterbody lug 2 to puncture barrier film.
Preferably, the room temperature resistance of PTC thermistor 3 is 3 ~ 20m Ω, and resistance value is 10 ~ 2500 Ω in the time of 85 ℃.
More excellent, the room temperature resistance of PTC thermistor 3 is 6 ~ 15m Ω, resistance value is 10 ~ 2500 Ω in the time of 100 ℃.
The according to the above description announcement of book and instruction, the utility model those skilled in the art can also change and revise above-mentioned execution mode.Therefore, the utility model is not limited to above-mentioned embodiment, and any apparent improvement, replacement or modification that every those skilled in the art have done on basis of the present utility model all belong to protection range of the present utility model.In addition, although used some specific terms in this specification, these terms do not consist of any restriction to the utility model just for convenience of description.
Claims (4)
1. lithium ion cell polar ear structure, it is characterized in that: comprise head lug, afterbody lug, PTC thermistor and sealing ring, described PTC thermistor is series between described head lug and the described afterbody lug, and an end of described head lug is electrically connected with an end of described afterbody lug by described PTC thermistor, the other end of described head lug stretches out in sealing ring and is electrically connected with external circuit, the other end of described afterbody lug and collector welding.
2. lithium ion cell polar ear structure according to claim 1 is characterized in that: the distance of the described sealing ring of described PTC thermistor distance is 3 ~ 7mm.
3. lithium ion cell polar ear structure according to claim 2 is characterized in that: the distance of the described sealing ring of described PTC thermistor distance is 5 ~ 6mm.
4. lithium ion cell polar ear structure according to claim 1, it is characterized in that: the surface of described PTC thermistor is coated with the PP thin layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013202396184U CN203242692U (en) | 2013-05-07 | 2013-05-07 | Lithium ion battery tab structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013202396184U CN203242692U (en) | 2013-05-07 | 2013-05-07 | Lithium ion battery tab structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203242692U true CN203242692U (en) | 2013-10-16 |
Family
ID=49319954
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013202396184U Expired - Lifetime CN203242692U (en) | 2013-05-07 | 2013-05-07 | Lithium ion battery tab structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203242692U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105449148A (en) * | 2015-11-30 | 2016-03-30 | 江门市拓联电子科技有限公司 | Lithium battery tab with overcurrent production |
| 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 |
| CN112018317A (en) * | 2020-09-18 | 2020-12-01 | 珠海冠宇电池股份有限公司 | Tab, preparation method and battery |
-
2013
- 2013-05-07 CN CN2013202396184U patent/CN203242692U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105449148A (en) * | 2015-11-30 | 2016-03-30 | 江门市拓联电子科技有限公司 | Lithium battery tab with overcurrent production |
| 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 |
| CN112018317A (en) * | 2020-09-18 | 2020-12-01 | 珠海冠宇电池股份有限公司 | Tab, preparation method and battery |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20131016 |