CN202259564U - High-security lithium ion battery - Google Patents
High-security lithium ion battery Download PDFInfo
- Publication number
- CN202259564U CN202259564U CN2011203669279U CN201120366927U CN202259564U CN 202259564 U CN202259564 U CN 202259564U CN 2011203669279 U CN2011203669279 U CN 2011203669279U CN 201120366927 U CN201120366927 U CN 201120366927U CN 202259564 U CN202259564 U CN 202259564U
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- China
- Prior art keywords
- battery
- circuit
- positive terminal
- terminal
- positive
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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 - Fee Related
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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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- Battery Mounting, Suspending (AREA)
Abstract
The utility model discloses a high-security lithium ion battery, which comprises a shell, a positive terminal, a negative terminal, a cover plate fixedly arranged on the shell in a sealing mode, and a battery cell arranged in the shell, wherein the cover plate is fixedly provided with a safety valve. The positive terminal and the negative terminal are arranged at two ends of the battery. An anode and a cathode on the battery cell are respectively connected with the positive terminal and the negative terminal. The bottom of the shell is provided with a groove, and a circuit consisting of a double-sheet metal thermal protector and a high-polymer positive temperature coefficient thermal resistor connected in parallel is arranged in the groove. One end of the circuit is connected with the positive terminal of the battery through a conductor, and the other end of the circuit is connected with an external load circuit of the battery or other negative terminals of adjacent batteries connected with the battery. The battery disclosed by the utility model has the functions of inhibiting high current arc discharge and providing resettable circuit protection under harsh conditions, can be used independently and also can be combined in a battery pack for use, and an effective structure for optimizing space, saving cost and meeting future battery safety requirements is provided for battery pack designers and manufactures.
Description
Technical field
The utility model belongs to technical field of lithium ion, relates to a kind of lithium ion battery of high security.
Background technology
Along with the development of lithium ion battery industry, the application of power lithium-ion battery more and more widely.The heavy-current discharge lithium ion battery that is applied to fields such as Wireless Power Tools, electric bicycle, back-up source has expedited the emergence of the demand to big electric current (under the 30V direct voltage, holding current is more than 30A) circuit brake in the market of growth fast.Stable, the reliable circuit protection of big electric current lithium ion battery group application need, however at present available traditional circuit protective device is generally big, higher than complicacy or price.Some circuit protection design is used in combination IC and MOSFET or similar complex scenario; Some considers in the direct current of the above operating current of 30A is used, to adopt the bimetal leaf protector; But must just can bear so high electric current with very big contact, the result causes the protective device volume excessive.In addition, possibly damage the contact, so also must the limit movement number of times owing to produce electric arc between the contact.Therefore need research to have the lithium ion battery of novel protected device,, practice thrift cost, improve protective value to reduce space hold.
The utility model content
The utility model technical problem to be solved provides a kind of lithium ion battery of high security; The battery container bottom surface is provided with a groove; Be provided with in the groove by a bimetal plate heat protector and the circuit that the high molecular positive temp thermistor composes in parallel; But the reset circuit protection can be provided under harsh conditions, reduce space hold, practice thrift cost.
The technical solution of utility model is following:
A kind of lithium ion battery of high security comprises housing, positive terminal, negative terminal, is packed in the cover plate on the housing and places the electric core in the housing;
Be fixed with safety valve on the cover plate; Positive terminal and negative terminal place the battery two ends; Positive pole, negative pole on the electricity core are connected with negative terminal with positive terminal respectively;
The housing bottom surface is provided with a groove, is provided with in the groove by a bimetal plate heat protector and the circuit that the high molecular positive temp thermistor composes in parallel; One end of circuit is connected with the positive terminal of battery through lead, the negative terminal of the external load circuit of other end connection battery or the adjacent cell of connecting with battery.
Bimetal plate heat protector has two closure/double-break contacts.
Beneficial effect:
The lithium ion battery of the utility model high security; The battery container bottom surface is provided with a groove; Be provided with in the groove by a bimetal plate heat protector and the circuit that the high molecular positive temp thermistor composes in parallel; But the reset circuit protection can be provided under harsh conditions, reduce space hold, practice thrift cost.
Description of drawings
Fig. 1 is the lithium ion battery structure sketch map of the utility model high security.
1 is housing among the figure, and 12 is cover plate, and 2 is electric core, and 3 is positive terminal, and 4 is negative terminal, and 5 is safety valve, and 6 is bottom groove, and 61 is bimetal plate heat protector, and 62 is the high molecular positive temp thermistor, and 63 is lead.
Embodiment
Below will combine accompanying drawing and specific embodiment that the utility model is explained further details:
As shown in Figure 1, a kind of lithium ion battery of high security comprises that housing, positive terminal, negative terminal, sealing are packed in the cover plate on the housing and place the electric core in the housing.Be fixed with safety valve on the cover plate.Positive terminal and negative terminal place the battery two ends.Positive pole, negative pole on the electricity core are connected with negative terminal with positive terminal respectively.The housing bottom surface is provided with a groove, is provided with in the groove by a bimetal plate heat protector and the circuit that the high molecular positive temp thermistor composes in parallel.One end of circuit is connected with the positive terminal of battery through lead, and the other end connects the external load circuit of battery or the negative terminal of other adjacent cell of connecting with battery.
Bimetal plate heat protector has two closure/double-break contacts.In course of normal operation, because the bimetal plate heat protector contact resistance is very low, so most of electric current will pass through bimetal plate heat protector.When overcurrent occurring in the circuit, the bimetal plate heat protector contact begins to open, and contact resistance rises rapidly.When contact resistance is higher than the resistance of high molecular positive temp thermistor, most of electric current will branch to the high molecular positive temp thermistor, and the electric current of the contact of flowing through can seldom or fully not have, thereby prevent to produce between the contact electric arc.When electric current branches to the high molecular positive temp thermistor; The resistance of high molecular positive temp thermistor rises rapidly; And reach the level that is higher than contact resistance far away, and the high molecular positive temp thermistor temp is risen, bimetal plate heat protector is heated; Let it stay open state, till overcurrent condition disappearance or power-off.
The utility model battery has can suppress high arc current discharge; But the function of reset circuit protection is provided under harsh conditions; Can use separately, also can be combined in the battery pack and use, for battery pack designer and manufacturer provide a kind of optimization space; Practice thrift cost, reach the resulting structure of following cell safety requirement.
Claims (2)
1. the lithium ion battery of a high security is characterized in that, comprises housing, positive terminal, negative terminal, is packed in the cover plate on the housing and places the electric core in the housing;
Be fixed with safety valve on the cover plate; Positive terminal and negative terminal place the battery two ends; Positive pole, negative pole on the electricity core are connected with negative terminal with positive terminal respectively;
The housing bottom surface is provided with a groove, is provided with in the groove by a bimetal plate heat protector and the circuit that the high molecular positive temp thermistor composes in parallel; One end of circuit is connected with the positive terminal of battery through lead, the negative terminal of the external load circuit of other end connection battery or the adjacent cell of connecting with battery.
2. the lithium ion battery of high security as claimed in claim 1 is characterized in that, said bimetal plate heat protector has two closure/double-break contacts.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203669279U CN202259564U (en) | 2011-09-29 | 2011-09-29 | High-security lithium ion battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203669279U CN202259564U (en) | 2011-09-29 | 2011-09-29 | High-security lithium ion battery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202259564U true CN202259564U (en) | 2012-05-30 |
Family
ID=46120759
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011203669279U Expired - Fee Related CN202259564U (en) | 2011-09-29 | 2011-09-29 | High-security lithium ion battery |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202259564U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105895850A (en) * | 2016-04-27 | 2016-08-24 | 东莞市联洲知识产权运营管理有限公司 | Thermal protection device of lithium battery for mobile communication device |
| CN105914330A (en) * | 2016-06-23 | 2016-08-31 | 苏州安靠电源有限公司 | Safety protection device of high-capacity battery pack |
-
2011
- 2011-09-29 CN CN2011203669279U patent/CN202259564U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105895850A (en) * | 2016-04-27 | 2016-08-24 | 东莞市联洲知识产权运营管理有限公司 | Thermal protection device of lithium battery for mobile communication device |
| CN105895850B (en) * | 2016-04-27 | 2018-08-10 | 台州宝诚科技服务有限公司 | A kind of thermel protection device of mobile communication equipment lithium battery |
| CN105914330A (en) * | 2016-06-23 | 2016-08-31 | 苏州安靠电源有限公司 | Safety protection device of high-capacity battery pack |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: FENGHUANG NEW ENERGY (HUIZHOU) CO., LTD. Free format text: FORMER NAME: HUIZHOU HANPAI BATTERY TECHNOLOGY CO., LTD. |
|
| CP01 | Change in the name or title of a patent holder |
Address after: 516211 Guangdong District of Huiyang city in Huizhou province long autumn street gurabardha Tang Jing group of ZILONG Industrial Park building D Patentee after: Fenghuang New Energy (Huizhou) Co., Ltd. Address before: 516211 Guangdong District of Huiyang city in Huizhou province long autumn street gurabardha Tang Jing group of ZILONG Industrial Park building D Patentee before: HUIZHOU HANDPACK BATTERY TECHNOLOGY CO., LTD. |
|
| DD01 | Delivery of document by public notice |
Addressee: Wu Yali Document name: Notification of Passing Examination on Formalities |
|
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120530 Termination date: 20160929 |