CN204088432U - Li-ion batteries piles - Google Patents
Li-ion batteries piles Download PDFInfo
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- CN204088432U CN204088432U CN201420573440.1U CN201420573440U CN204088432U CN 204088432 U CN204088432 U CN 204088432U CN 201420573440 U CN201420573440 U CN 201420573440U CN 204088432 U CN204088432 U CN 204088432U
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- lithium ion
- ion battery
- battery
- ion batteries
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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
Abstract
The utility model relates to lithium ion battery, particularly a kind of lithium ion battery possessing Secure isolation function, and object in use thermal runaway occurs thus the problem bringing potential safety hazard for solving current lithium ion battery.The utility model provides a kind of Li-ion batteries piles, comprise some lithium ion batteries, described lithium ion battery is in parallel or be connected in series, and described lithium ion battery comprises battery body, the coated film of described battery body, adopts spacer to isolate between described lithium ion battery.The utility model is applicable to lithium ion battery.
Description
Technical field
The utility model relates to lithium ion battery, particularly a kind of lithium ion battery possessing Secure isolation function.
Background technology
Lithium ion battery has that energy density is large, power output is high, the discharge and recharge life-span is long, pollution-free, operating temperature range is wide and the plurality of advantages such as self discharge is little.It is as novel high-energy chemistry power supply, towards in the process solving human environment pollution and energy crisis advance, encounters challenge the hugest, i.e. safety problem.Lithium ion battery can because of overcurrent, inner dendrite causes internal short-circuit or the abuse conditions such as to overcharge, and causes inner heat accumulation, when thermal accumlation to a certain extent time, electrolyte, positive pole and inner other materials generation heat release chain reaction can be caused, finally cause lithium battery generation thermal runaway.
The approach of current solution lithium ion battery security problem mainly comprises two aspects.Be on the one hand ensure its fail safe by working service or Added Management, as prevented lithium ion battery short circuit by lithium ion battery management system, overcharge and overtemperature etc.It is then on the other hand the fail safe improving lithium ion battery self by improving lithium battery material or optimal design.As by improving positive electrode stability, adding the additives such as fire-retardant and anti-overcharge in the electrolytic solution, adopting the modes such as new types of diaphragm (as ceramic diaphragm).But said method is because of the restriction of various factors, the safety issue of lithium ion battery all fundamentally cannot be solved at present.
Utility model content
The purpose of this utility model in use thermal runaway occurs thus the problem bringing potential safety hazard for solving current lithium ion battery.
The utility model provides a kind of Li-ion batteries piles, comprise some lithium ion batteries, described lithium ion battery is in parallel or be connected in series, and described lithium ion battery comprises battery body, described battery body Surface coating film, is provided with spacer between described lithium ion battery.
Film is used for playing fire retardation when battery body generation thermal runaway, and spacer is used for causing other lithium ion battery thermal runaway when preventing single lithium ion battery generation thermal runaway.
Particularly, described spacer adopts three-decker, and skin is polytetrafluoroethylene lamella, and intermediate layer is ceramic fiber layer, skin be except intermediate layer outside other is two-layer.
Particularly, the outer field thickness range of described spacer is 0.1mm ~ 1mm, and the thickness range in intermediate layer is 0.5mm ~ 5mm.
Particularly, described ceramic fibre tolerance at least 1000 degree high temperature, conductive coefficient is less than < 0.03W/mK.
Particularly, described film is the film adopting insulating material to make, the high temperature of film tolerance at least 300 degree.
Particularly, described film adopts fire-retardant rank to be that the material of V0 level is made.
Preferably, described film is the film adopting polytetrafluoroethylene or polyimides manufacture.
The beneficial effects of the utility model are: the utility model provides a kind of lithium ion battery with Secure isolation function, in the Li-ion batteries piles that multiple lithium ion battery forms, adopt the method to isolate lithium ion battery, and at the outside coated film of single lithium ion battery, fire retardation can either be played to lithium ion battery, the effective isolation between lithium ion battery can be realized again.When a lithium ion battery generation thermal runaway, other lithium ion battery chain-reacts in battery pack can not be caused, thus substantially increase the fail safe of lithium ion battery in application process.
Accompanying drawing explanation
Fig. 1 is the lithium-ions battery structural representation of embodiment.
Fig. 2 is the lithium-ions battery group structural representation of embodiment.
Fig. 3 is the spacer structure schematic diagram of embodiment.
Wherein, 101 is lithium ion battery body, and 102 is film, and 201 is spacer, and 301 is outer spacer, and 302 is intermediate layer spacer.
Embodiment
Below in conjunction with drawings and Examples, the technical solution of the utility model is further described; embodiment is only used to help reader understand scheme of the present utility model better and set forth the beneficial effect adopting scheme of the present utility model to bring, not in order to limit protection range of the present utility model.
The utility model is solve current lithium ion battery in use thermal runaway occur thus bring the problem of potential safety hazard, a kind of Li-ion batteries piles is provided, comprise some lithium ion batteries, described lithium ion battery is in parallel or be connected in series, described lithium ion battery comprises battery body, the coated film of described battery body, adopts spacer to isolate between described lithium ion battery.
Embodiment
Embodiment adopts the square soft bag lithium ionic cell of 5Ah cobalt acid lithium system.
Embodiment 1:
Paste the thick polytetrafluoroethylene film of one deck 0.03mm 102 at lithium ion battery surface, see Fig. 1.Carry out pin prick test to the lithium ion battery body 101 carrying out Secure isolation as stated above, make lithium ion battery generation thermal runaway, lithium ion battery is not on fire in process of the test.
Comparative example 1:
Carry out pin prick test to the square soft bag lithium ionic cell body 101 of 5Ah cobalt acid lithium system not carrying out Secure isolation in this example, test finds that lithium ion battery is on fire in process of the test.
Embodiment 2:
At surface mount the polytetrafluoroethylene film that 0.03mm is thick lithium ion battery body 101 between increase high temperature resistant, fire-retardant compound spacer 201 and isolate, see Fig. 2.Wherein high temperature resistant, fire-retardant compound spacer 201 adopts 3-tier architecture, outer spacer 301 is teflon plate, intermediate layer spacer 302 is high temperature resistant (> 1000 DEG C), and the ceramic fibre of conductive coefficient little (< 0.03W/mK), its structural representation is shown in Fig. 3.Acupuncture is carried out to a wherein lithium ion battery, make it that thermal runaway occur, measure the temperature of adjacent lithium ion battery, adjust the thickness of outer spacer 301 and intermediate layer spacer 302, when outer spacer 301 thickness is 0.5mm, when intermediate layer spacer 302 thickness is 2mm, lithium ion battery is not on fire, and thermal runaway does not occur adjacent lithium ion battery.
Comparative example 2:
Do not increase high temperature resistant, fire-retardant compound spacer 201 between the lithium ion battery of the polytetrafluoroethylene film that surface mount 0.03mm is thick to isolate.Carry out acupuncture to a wherein lithium ion battery, make it that thermal runaway occur, test shows, lithium ion battery is not on fire, but adjacent lithium ion battery affects by it and also thermal runaway occurs.
By the contrast of embodiment and comparative example, be not difficult to find, adopt that the utility model method is high temperature resistant at the coated one deck of lithium ion battery surface, after fire-retardant film, can fire retardation be played when lithium ion battery generation thermal runaway; With high temperature resistant, fire-retardant compound spacer isolation between many lithium ion batteries, when after certain lithium ion battery generation thermal runaway, the ion battery of adjacent lithium can be stoped to affect by it and also thermal runaway to occur, effectively improve the fail safe of lithium ion battery in application process.
Claims (5)
1. Li-ion batteries piles, comprises some lithium ion batteries, and described lithium ion battery is in parallel or be connected in series, and it is characterized in that, described lithium ion battery comprises battery body, and described battery body Surface coating film, is provided with spacer between described lithium ion battery.
2. Li-ion batteries piles as claimed in claim 1, is characterized in that, described spacer adopts three-decker, and skin is polytetrafluoroethylene lamella, and intermediate layer is ceramic fiber layer.
3. Li-ion batteries piles as claimed in claim 2, it is characterized in that, the outer field thickness range of described spacer is 0.1mm ~ 1mm, and the thickness range in intermediate layer is 0.5mm ~ 5mm.
4. Li-ion batteries piles as claimed in claim 1, is characterized in that, described film is the film adopting insulating material to make.
5. Li-ion batteries piles as claimed in claim 4, is characterized in that, described film is the film adopting polytetrafluoroethylene or polyimides manufacture.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420573440.1U CN204088432U (en) | 2014-09-30 | 2014-09-30 | Li-ion batteries piles |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420573440.1U CN204088432U (en) | 2014-09-30 | 2014-09-30 | Li-ion batteries piles |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204088432U true CN204088432U (en) | 2015-01-07 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
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| CN201420573440.1U Active CN204088432U (en) | 2014-09-30 | 2014-09-30 | Li-ion batteries piles |
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| CN (1) | CN204088432U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104269504A (en) * | 2014-09-30 | 2015-01-07 | 四川长虹电源有限责任公司 | Lithium ion battery and lithium ion battery pack |
| JPWO2018207608A1 (en) * | 2017-05-12 | 2020-05-21 | 三洋電機株式会社 | Power supply device, vehicle including the same, power storage device, and power supply device separator |
| CN112385074A (en) * | 2018-06-15 | 2021-02-19 | 瑞维安知识产权控股有限责任公司 | Battery pack having laminate sheet to reduce side rupture impact and method of manufacturing the same |
| JPWO2019187313A1 (en) * | 2018-03-30 | 2021-03-25 | 三洋電機株式会社 | Power supply device and electric vehicle and power storage device equipped with this power supply device |
-
2014
- 2014-09-30 CN CN201420573440.1U patent/CN204088432U/en active Active
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104269504A (en) * | 2014-09-30 | 2015-01-07 | 四川长虹电源有限责任公司 | Lithium ion battery and lithium ion battery pack |
| JPWO2018207608A1 (en) * | 2017-05-12 | 2020-05-21 | 三洋電機株式会社 | Power supply device, vehicle including the same, power storage device, and power supply device separator |
| JP7146744B2 (en) | 2017-05-12 | 2022-10-04 | 三洋電機株式会社 | POWER SUPPLY DEVICE AND VEHICLE INCLUDING THE SAME, ELECTRICAL STORAGE DEVICE, AND SEPARATOR FOR POWER SUPPLY DEVICE |
| US11476541B2 (en) | 2017-05-12 | 2022-10-18 | Sanyo Electric Co., Ltd. | Power supply device, vehicle equipped with same, power storage device and separator for power supply device |
| JPWO2019187313A1 (en) * | 2018-03-30 | 2021-03-25 | 三洋電機株式会社 | Power supply device and electric vehicle and power storage device equipped with this power supply device |
| JP7326250B2 (en) | 2018-03-30 | 2023-08-15 | 三洋電機株式会社 | Power supply device and electric vehicle and power storage device equipped with this power supply device |
| US11757144B2 (en) | 2018-03-30 | 2023-09-12 | Sanyo Electric Co., Ltd. | Power supply device, electric vehicle provided with said power supply device, and electricity-storage device |
| CN112385074A (en) * | 2018-06-15 | 2021-02-19 | 瑞维安知识产权控股有限责任公司 | Battery pack having laminate sheet to reduce side rupture impact and method of manufacturing the same |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |