CN104347840A - Leakage flame retardant structure of lithium ion battery group - Google Patents
Leakage flame retardant structure of lithium ion battery group Download PDFInfo
- Publication number
- CN104347840A CN104347840A CN201310323752.7A CN201310323752A CN104347840A CN 104347840 A CN104347840 A CN 104347840A CN 201310323752 A CN201310323752 A CN 201310323752A CN 104347840 A CN104347840 A CN 104347840A
- Authority
- CN
- China
- Prior art keywords
- positive electrode
- leakage
- decompression valves
- batteries
- electrolytic solution
- 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
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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
- H01M50/30—Arrangements for facilitating escape of gases
- H01M50/392—Arrangements for facilitating escape of gases with means for neutralising or absorbing electrolyte; with means for preventing leakage of electrolyte through vent holes
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/05—Accumulators with non-aqueous electrolyte
- H01M10/052—Li-accumulators
- H01M10/0525—Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodes; Lithium-ion batteries
-
- 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 invention discloses a leakage flame retardant structure of a lithium ion battery group. The leakage flame retardant structure comprises a plurality of monomer batteries, screw caps, positive electrode decompression valves, screws, a PCB (printed circuit board) and sponges, wherein the screw caps are welded on positive electrodes of the monomer batteries; the positive electrode decompression valves are positioned between the positive electrodes of the monomer batteries and the screw caps; the screws are welded on negative electrodes of the monomer batteries; the PCB is used for fixing the battery group, and the sponge are used for absorbing a leaking electrolytic solution and are clung to the positive electrode decompression valves after being mounted, and a sponge plate is provided with a screw cap installing hole and a ventilation hole. Compared with the prior art, when the temperature of one of monomer batteries in the battery group rapidly rises because of an internal short circuit, and the internal pressures of the batteries are rapidly increased and exceed a safe value, the positive electrode decompression valves of the batteries are opened, and the electrolytic solution can leak from the positive electrode decompression valves; when the electrolytic solution outflows, the sponges arranged on the front the positive electrode decompression valves can fully adsorb the leaking electrolytic solution, so that a condition that the potential safety hazard is caused because the electrolytic solution leaks in a battery box is avoided.
Description
[technical field]
The present invention relates to the safe design of Li-ion batteries piles, particularly relate to the leakage flame retarding construction of Li-ion batteries piles.
[background technology]
Lithium ion battery is as a kind of novel energy-storing power supply, there is the advantages such as energy is high, operating voltage is high, operating temperature range is wide, volume is little, the life-span is long, environmental protection, become rapidly the new Pang in power supply market, and be widely applied to hybrid electric vehicle, electric automobile, electric bicycle, photovoltaic wind energy storage device.Research finds, the fail safe of battery is not only relevant with battery core, the automatically controlled design of electronics, and omnibearing safeguard construction is also most important.
Ion battery group mainly reaches voltage and the capacity of designing requirement by the connected mode of parallel connection and serial connection, then can use more cell in a Battery pack group, the relationship between quality of cell is to the work quality of whole battery pack and safety, if some cells cause the hurried rising of temperature because of internal short-circuit in battery pack, cell internal pressure can be caused to increase fast, when pressure exceedes safety value, the safety relief valve of anode can be opened, to avoid blast, but now, inside battery electrolyte also can leak out thereupon, and battery case is inner because there is electrostatic, if the spark produced because of electrostatic and electrolyte contacts, hidden danger on fire will be there is, very large to the threat of battery pack and terminal equipment.
In view of above drawback, be necessary to provide a kind of leakage flame retarding construction of Li-ion batteries piles to overcome above-mentioned defect in fact.
[summary of the invention]
The object of this invention is to provide a kind of leakage flame retarding construction of Li-ion batteries piles, it efficiently solves the hidden danger on fire produced because of battery leakage.
To achieve these goals, the present invention adopts following technical scheme: a kind of leakage flame retarding construction of Li-ion batteries piles, it comprises some cells, be welded in the nut of cell positive pole, positive pole pressure relief valve between anode and nut, be welded in the screw of cell negative pole, the pcb board of self-contained battery group, for adsorbing the sponge of electrolyte leakage, the nut of described cell positive pole screws up formation through the screw of sponge and front-seat battery cathode and is installed in series, described pcb board is installed on front-seat battery cathode, fixed by negative pole screw and battery is formed and be installed in parallel, described sponge is installed between anode pressure relief valve and front-seat pcb board, described sponge has nut installing hole and ventilation hole.
The invention has the beneficial effects as follows: if certain cell generation electrolyte leakage in battery pack, when electrolyte flows out, the sponge be installed on before positive pole pressure relief valve all can be adsorbed onto the electrolyte leaked in sponge, avoids electrolyte because leaking the potential safety hazard caused in battery case.
[accompanying drawing explanation]
Fig. 1 is the cell schematic diagram of the leakage flame retarding construction of a kind of Li-ion batteries piles of the present invention;
Fig. 2 is the sponge schematic diagram of the leakage flame retarding construction of a kind of Li-ion batteries piles of the present invention;
Fig. 3 is the sponge leakage absorption schematic diagram of the leakage flame retarding construction of a kind of Li-ion batteries piles of the present invention;
Fig. 4 is the integral installation schematic diagram of the leakage flame retarding construction of a kind of Li-ion batteries piles of the present invention.
[embodiment]
Please refer to shown in Fig. 1 to Fig. 4, below in conjunction with case study on implementation, the invention will be further described.
The leakage flame retarding construction of a kind of Li-ion batteries piles of the present invention, it comprises some cell cell, be welded in the nut 1 of cell positive pole, positive pole pressure relief valve 3 between anode and nut, be welded in the screw 2 of cell negative pole, the pcb board 4 of self-contained battery group, for adsorbing the sponge 5 of electrolyte leakage, the nut 1 of described cell cell positive pole screws up formation through sponge 5 with the screw 2 of front-seat battery cathode and is installed in series, described pcb board 4 is installed on front-seat battery cathode, fixed by negative pole screw 2 and battery is formed and be installed in parallel, described sponge 5 is installed between battery cell positive pole pressure relief valve 3 and front-seat pcb board, described sponge has nut installing hole A and ventilation hole B.
The operation principle of the leakage flame retarding construction of a kind of Li-ion batteries piles of the present invention is: when certain cell in battery pack because internal short-circuit causes the hurried rising of temperature, when making cell internal pressure increase fast and exceed safety value, the pressure relief valve of anode is opened, electrolyte leaks out from positive pole pressure relief valve, when electrolyte flows out, the sponge be installed on before positive pole pressure relief valve all can be adsorbed onto the electrolyte leaked in sponge, avoids electrolyte because leaking the potential safety hazard caused in battery case.
The leakage flame retarding construction of a kind of Li-ion batteries piles of the present invention, be not restricted to described in specification and execution mode, therefore additional advantage and amendment can easily be realized for the personnel of familiar field, therefore when not deviating from the spirit and scope of the universal that claim and equivalency range limit, the present invention is not limited to specific details, representational equipment and illustrates here and the examples shown described.
Claims (4)
1. the leakage flame retarding construction of a Li-ion batteries piles, it comprises some cells, be welded in the nut of cell positive pole, positive pole pressure relief valve between anode and nut, be welded in the screw of cell negative pole, the pcb board of self-contained battery group, for adsorbing the sponge of electrolyte leakage.
2. the leakage flame retarding construction of a kind of Li-ion batteries piles according to claim 1, is characterized in that: the nut of described cell positive pole screws up through the screw of sponge and front-seat battery cathode.
3. the leakage flame retarding construction of a kind of Li-ion batteries piles according to claim 1, is characterized in that: described sponge has nut installing hole and ventilation hole.
4. the leakage flame retarding construction of a kind of Li-ion batteries piles according to claim 1, is characterized in that: described sponge plate is close to the positive pole pressure relief valve of battery after installing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310323752.7A CN104347840A (en) | 2013-07-25 | 2013-07-25 | Leakage flame retardant structure of lithium ion battery group |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310323752.7A CN104347840A (en) | 2013-07-25 | 2013-07-25 | Leakage flame retardant structure of lithium ion battery group |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104347840A true CN104347840A (en) | 2015-02-11 |
Family
ID=52502992
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310323752.7A Pending CN104347840A (en) | 2013-07-25 | 2013-07-25 | Leakage flame retardant structure of lithium ion battery group |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104347840A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106025404A (en) * | 2016-07-22 | 2016-10-12 | 圣邦微电子（北京）股份有限公司 | Internal short circuit warning detection method for lithium ion rechargeable batteries |
| CN109585958A (en) * | 2018-11-30 | 2019-04-05 | 清华大学 | Li-ion batteries piles thermal runaway processing system and method |
| WO2020224016A1 (en) * | 2019-05-07 | 2020-11-12 | 国网江苏省电力有限公司电力科学研究院 | Novel lithium ion battery and battery module |
-
2013
- 2013-07-25 CN CN201310323752.7A patent/CN104347840A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106025404A (en) * | 2016-07-22 | 2016-10-12 | 圣邦微电子（北京）股份有限公司 | Internal short circuit warning detection method for lithium ion rechargeable batteries |
| CN106025404B (en) * | 2016-07-22 | 2019-10-25 | 圣邦微电子（北京）股份有限公司 | Lithium ion chargeable battery internal short-circuit early warning method for detecting |
| CN109585958A (en) * | 2018-11-30 | 2019-04-05 | 清华大学 | Li-ion batteries piles thermal runaway processing system and method |
| WO2020224016A1 (en) * | 2019-05-07 | 2020-11-12 | 国网江苏省电力有限公司电力科学研究院 | Novel lithium ion battery and battery module |
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Legal Events
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| C06 | Publication | ||
| PB01 | Publication | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20150211 |