CN204905337U - Security isolation's lithium cell package - Google Patents
Security isolation's lithium cell package Download PDFInfo
- Publication number
- CN204905337U CN204905337U CN201520523669.9U CN201520523669U CN204905337U CN 204905337 U CN204905337 U CN 204905337U CN 201520523669 U CN201520523669 U CN 201520523669U CN 204905337 U CN204905337 U CN 204905337U
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- China
- Prior art keywords
- lithium battery
- lithium cell
- lithium
- isolation
- utility
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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 Electrode And Active Subsutance (AREA)
Abstract
The utility model discloses a security isolation's lithium cell package, including a plurality of lithium cells, parallelly connected or the series connection of lithium cell, wherein, the lithium cell includes cell ontology, cell ontology surface cladding isolation diaphragm. The utility model discloses following beneficial effect has: the lithium cell inter block of constituteing at a plurality of lithium cells adopts this method to keep apart the lithium cell to at single the outside cladding film of lithium cell, can enough play fire -retardant effect to the lithium cell, can realize the effective isolation between the lithium cell again. When a lithium cell takes place the thermal runaway, can not arouse that interior other lithium cells of group battery take place chain reaction to the lithium cell is in the security of application process is greatly improved.
Description
Technical field
The utility model relates to lithium battery technology, especially, relates to a kind of lithium battery bag of Secure isolation.
Background technology
Lithium 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 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 battery safety issue mainly ensures its fail safe by working service or Added Management, as prevented lithium battery short circuit by lithium battery management system, overcharges and overtemperature etc.But said method is because of the restriction of various factors, the safety issue of lithium battery all fundamentally cannot be solved at present.
Utility model content
The utility model object is the lithium battery bag providing a kind of Secure isolation, to solve the problem that fundamentally cannot solve the fail safe of lithium battery in prior art.
For achieving the above object, the utility model provides a kind of lithium battery bag of Secure isolation, comprises some lithium batteries, and described lithium battery is in parallel or be connected in series, and it is characterized in that, described lithium battery comprises battery body, described battery body Surface coating isolation diaphragm.
Further, the utility model provides a kind of lithium battery bag of Secure isolation, and wherein, described isolation diaphragm adopts three-decker, and skin is polytetrafluoroethylene lamella, and intermediate layer is ceramic fiber layer.
Further, the utility model provides a kind of lithium battery bag of Secure isolation, and wherein, the outer field thickness range of described isolation diaphragm is 0.1mm to 1mm, and the thickness range in intermediate layer is 0.5mm to 5mm.
Further, the utility model provides a kind of lithium battery bag of Secure isolation, wherein, described ceramic fiber layer comprises barrier film base material, described barrier film base material single or double is coated with porous ceramic layer, and described porous ceramic layer is coated on barrier film base material by the slurry containing nano-ceramic powder, binding agent and pore-creating solvent to form.
The utility model has following beneficial effect: in the lithium battery group that multiple lithium battery forms, adopt the method to isolate lithium battery, and at the coated film of single lithium battery external, fire retardation can either be played to lithium battery, the effective isolation between lithium battery can be realized again.When a lithium battery generation thermal runaway, other lithium battery chain-reacts in battery pack can not be caused, thus substantially increase the fail safe of lithium battery in application process.
Accompanying drawing explanation
Below with reference to figure, the utility model is described in further detail.The accompanying drawing forming a application's part is used to provide further understanding of the present utility model, and schematic description and description of the present utility model, for explaining the utility model, is not formed improper restriction of the present utility model.In the accompanying drawings:
Fig. 1 is the lithium battery structure schematic diagram of embodiment.
Fig. 2 is the lithium battery pack arrangement schematic diagram of embodiment.
Fig. 3 is the isolation diaphragm structural representation of embodiment.
Embodiment
Below in conjunction with accompanying drawing, embodiment of the present utility model is described in detail.
Refer to Fig. 1 to Fig. 3, the utility model is solve current lithium battery in use thermal runaway occur thus bring the problem of potential safety hazard, a kind of lithium battery bag of Secure isolation is provided, comprise some lithium batteries, described lithium battery is in parallel or be connected in series, described lithium battery comprises battery body, and the coated film of described battery body, adopts isolation diaphragm to isolate between described lithium battery.
Embodiment
Embodiment adopts the square soft package lithium battery of 5Ah cobalt acid lithium system.
Embodiment 1:
At the polytetrafluoroethylene film 102 that lithium battery surface mount one deck 0.03mm is thick, see Fig. 1.Carry out pin prick test to the lithium battery body 101 carrying out Secure isolation as stated above, make lithium battery generation thermal runaway, lithium battery is not on fire in process of the test.
Comparative example 1:
Carry out pin prick test to the square soft package lithium battery body 101 of 5Ah cobalt acid lithium system not carrying out Secure isolation in this example, test finds that lithium battery is on fire in process of the test.
Embodiment 2:
At surface mount the polytetrafluoroethylene film that 0.03mm is thick lithium battery body 101 between increase high temperature resistant, fire-retardant composite isolated film sheet 201 and isolate, see Fig. 2.Wherein high temperature resistant, fire-retardant composite isolated film sheet 201 adopts 3-tier architecture, outer isolation diaphragm 301 is teflon plate, intermediate layer isolation diaphragm 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 battery, make it that thermal runaway occur, measure the temperature of adjacent lithium battery, adjust the thickness of outer isolation diaphragm 301 and intermediate layer isolation diaphragm 302, when outer isolation diaphragm 301 thickness is 0.5mm, when intermediate layer isolation diaphragm 302 thickness is 2mm, lithium battery is not on fire, and thermal runaway does not occur adjacent lithium battery.
Comparative example 2:
Do not increase high temperature resistant, fire-retardant composite isolated film sheet 201 between the lithium battery of the polytetrafluoroethylene film that surface mount 0.03mm is thick to isolate.Carry out acupuncture to a wherein lithium battery, make it that thermal runaway occur, test shows, lithium battery is not on fire, but adjacent lithium 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 lithium battery Surface coating one deck, after fire-retardant film, can fire retardation be played when lithium battery generation thermal runaway; With high temperature resistant, fire-retardant composite isolated film sheet isolation between many lithium batteries, when after certain lithium 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 battery in application process.
As can be seen from the above description, the utility model the above embodiments achieve following technique effect:
In the lithium battery bag that multiple lithium battery forms, adopt the method to isolate lithium battery, and at the coated film of single lithium battery external, fire retardation can either be played to lithium battery, the effective isolation between lithium battery can be realized again.When a lithium battery generation thermal runaway, other lithium battery chain-reacts in power brick can not be caused, thus substantially increase the fail safe of lithium battery in application process.
The foregoing is only preferred embodiment of the present utility model, be not limited to the utility model; For a person skilled in the art, the utility model can have various modifications and variations.All within spirit of the present utility model and principle, any amendment done, equivalent replacement, improvement etc., all should be included within protection range of the present utility model.
Claims (4)
1. a lithium battery bag for Secure isolation, comprises some lithium batteries, and described lithium battery is in parallel or be connected in series, and it is characterized in that, described lithium battery comprises battery body, described battery body Surface coating isolation diaphragm.
2. the lithium battery bag of a kind of Secure isolation as claimed in claim 1, is characterized in that, described isolation diaphragm adopts three-decker, and skin is polytetrafluoroethylene lamella, and intermediate layer is ceramic fiber layer.
3. the lithium battery bag of a kind of Secure isolation as claimed in claim 2, is characterized in that, the outer field thickness range of described isolation diaphragm is 0.1mm to 1mm, and the thickness range in intermediate layer is 0.5mm to 5mm.
4. the lithium battery bag of a kind of Secure isolation as claimed in claim 2, it is characterized in that, described ceramic fiber layer comprises barrier film base material, described barrier film base material single or double is coated with porous ceramic layer, and described porous ceramic layer is coated on barrier film base material by the slurry containing nano-ceramic powder, binding agent and pore-creating solvent to form.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520523669.9U CN204905337U (en) | 2015-07-17 | 2015-07-17 | Security isolation's lithium cell package |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520523669.9U CN204905337U (en) | 2015-07-17 | 2015-07-17 | Security isolation's lithium cell package |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204905337U true CN204905337U (en) | 2015-12-23 |
Family
ID=54927492
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520523669.9U Expired - Fee Related CN204905337U (en) | 2015-07-17 | 2015-07-17 | Security isolation's lithium cell package |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204905337U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
-
2015
- 2015-07-17 CN CN201520523669.9U patent/CN204905337U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20151223 Termination date: 20170717 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |