CN104953165B - Overcharge explosion-proof lithium battery - Google Patents
Overcharge explosion-proof lithium battery Download PDFInfo
- Publication number
- CN104953165B CN104953165B CN201510406558.4A CN201510406558A CN104953165B CN 104953165 B CN104953165 B CN 104953165B CN 201510406558 A CN201510406558 A CN 201510406558A CN 104953165 B CN104953165 B CN 104953165B
- Authority
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- China
- Prior art keywords
- negative plate
- battery
- delivery hole
- lithium
- copper foil
- 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.)
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- 229910052744 lithium Inorganic materials 0.000 title claims abstract description 46
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 title claims abstract description 36
- 230000004888 barrier function Effects 0.000 claims abstract description 32
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims abstract description 29
- 239000011889 copper foil Substances 0.000 claims abstract description 24
- 150000002641 lithium Chemical class 0.000 claims abstract description 11
- 239000005030 aluminium foil Substances 0.000 claims abstract description 9
- 239000003792 electrolyte Substances 0.000 claims abstract description 8
- 238000000034 method Methods 0.000 claims abstract description 8
- 230000008569 process Effects 0.000 claims abstract description 6
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 claims description 16
- 229910001416 lithium ion Inorganic materials 0.000 claims description 16
- 238000002425 crystallisation Methods 0.000 claims description 3
- 230000008025 crystallization Effects 0.000 claims description 3
- 241000555268 Dendroides Species 0.000 claims description 2
- SMBQBQBNOXIFSF-UHFFFAOYSA-N dilithium Chemical compound [Li][Li] SMBQBQBNOXIFSF-UHFFFAOYSA-N 0.000 claims description 2
- 238000007599 discharging Methods 0.000 claims description 2
- 230000005611 electricity Effects 0.000 claims description 2
- 230000000630 rising effect Effects 0.000 claims description 2
- 210000001138 tear Anatomy 0.000 claims 1
- 238000004880 explosion Methods 0.000 abstract description 4
- 230000006641 stabilisation Effects 0.000 abstract 1
- 238000011105 stabilization Methods 0.000 abstract 1
- 230000008901 benefit Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 238000002407 reforming Methods 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000009182 swimming Effects 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- 238000009834 vaporization Methods 0.000 description 1
- 230000008016 vaporization Effects 0.000 description 1
Classifications
-
- 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
-
- 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
- H01M10/058—Construction or manufacture
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M4/00—Electrodes
- H01M4/02—Electrodes composed of, or comprising, active material
- H01M4/13—Electrodes for accumulators with non-aqueous electrolyte, e.g. for lithium-accumulators; Processes of manufacture thereof
-
- 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
-
- 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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Secondary Cells (AREA)
- Connection Of Batteries Or Terminals (AREA)
Abstract
Explosion-proof lithium battery is overcharged the present invention relates to one kind, explosion-proof lithium battery is originally overcharged and is included closed housing, positive pole and negative pole；It is stacked with Copper Foil, negative plate, barrier film, positive plate and aluminium foil successively from top to bottom in the housing；The Copper Foil is electrically connected with the negative pole, and the aluminium foil is electrically connected with the positive pole；It is closed in the housing to have electrolyte；Equidistant close-packed array has delivery hole on the negative plate, and the aperture direction of each delivery hole is vertical with the negative plate；Insulating barrier is scribbled on the internal perisporium of each delivery hole, insulating barrier is also coated with faced with the barrier film face of negative plate；This lithium battery is safer in charging process, stabilization, can effectively prevent barrier film to be punctured, and greatly reduces the probability that the battery explosion phenomenon caused by overcharging occurs.
Description
Technical field
It is a kind of explosion-proof lithium battery particularly the present invention relates to a kind of lithium battery.
Background technology
Compared to traditional lead-acid accumulator, lithium battery has obvious advantage, its energy ratio is higher, service life more
Long, rated voltage is higher, self-discharge rate is lower, while quality is lighter, more energy efficient environmental protection, plurality of advantages causes that lithium battery is extensive
Apply in each corner of life；But current lithium battery still suffers from potential safety hazard, lithium battery used in recent years in, often
It has been reported that lithium battery explodes in charging process；The explosion cause of lithium battery is roughly divided into three kinds：External short circuit, inside are short
Road, over-charging of battery；Wherein, over-charging of battery is main explosion cause；Because when battery is full of, having been stored in the grid of negative plate
Full lithium atom, if continuing to charge, follow-up lithium atom will be deposited in negative pole plate surface, and these lithium atoms can be from negative pole plate surface
The direction come to lithium ion trip grows ingotism；Because the positive and negative pole plate of lithium battery now is to just right, these crystallizations will
Puncture the barrier film between positive and negative pole plate so that positive and negative pole plate directly contact and it is short-circuit, and then the electrolyte in battery is heated
Vaporization, case swells, ultimately result in lithium battery blast, or even electrolyte burning, blast caused by temperature is too high, cause more serious
Security incident.
The content of the invention
Regarding to the issue above, the present invention provides one kind and overcharges explosion-proof lithium battery, and this lithium battery is more pacified in charging process
Entirely, stably, can effectively prevent barrier film to be punctured, greatly reduce the probability that the battery explosion phenomenon caused by overcharging occurs.
To solve the above problems, the technical solution adopted in the present invention is：Originally overcharge explosion-proof lithium battery include it is closed
Housing, positive pole and negative pole；It is stacked with Copper Foil, negative plate, barrier film, positive plate and aluminium foil successively from top to bottom in the housing；
The Copper Foil is electrically connected with the negative pole, and the aluminium foil is electrically connected with the positive pole；It is closed in the housing to have electrolyte；
Equidistant close-packed array has delivery hole on the negative plate, and the aperture direction of each delivery hole is vertical with the negative plate；
Insulating barrier is scribbled on the internal perisporium of each delivery hole, is also coated with faced with the barrier film face of negative plate absolutely
Edge layer.
The beneficial effects of the invention are as follows：When charging, lithium ion moves about to negative plate and forms lithium lithium battery through barrier film
Atom；When lithium battery is overcharged, direction when excessive lithium atom can come along lithium ion on negative plate forms dendroid knot
It is brilliant；In traditional lithium battery, the conducting surface of positive/negative plate is faced, therefore the vertical sensing of ingotism that negative plate is produced
Positive plate, the positive/negative plate directly contact that barrier film is easily punctured and made by the ingotism causes short circuit；Compared to traditional
Lithium battery, the present invention in charging process, lithium ion leaves from positive plate, through barrier film after along the delivery hole reach negative plate
The back side, lithium atom layer formed by the swimming direction of the lithium ion of delivery hole parallel to negative plate, on negative plate concentrate on and bear
Between pole plate and Copper Foil；Therefore in over-charging of battery, the ingotism by along the direction parallel with negative plate in negative pole
Grown between plate and Copper Foil, effectively prevent ingotism from puncturing barrier film, and then prevent positive/negative plate short circuit.
Manufacture craft of the present invention is simple, transformation is convenient, only need to be by negative plate punching and spray applied insulation in actual production
；The present invention solves the problems, such as that barrier film is destroyed cause short circuit from source, with security higher.
Preferably, it is raised that corrugated is carved with relative with a Copper Foil face of the negative plate；In order to increase
The surface area of negative plate chemical reaction, so as to accelerate charge/discharge rates.
Used as further preferred, the position that each delivery hole the is opened up position raised with the corrugated is just right；Lithium from
Son by flow to after delivery hole corrugated projection between recess, under over-charging of battery state, dendritic growth exists
Recess, effectively prevents extruding, abrasion of the ingotism to aluminium foil.
Preferably, the copper foil surface each described delivery hole just to position at be fixed with hemispherical heat expansion
Projection；When battery temperature is too high, each delivery hole is blocked in the volumetric expansion of each heat expansion projection, so as to block lithium ion
It is travelling, make battery open circuit, and then prevent battery from being expanded because of overheat, exploded.
Brief description of the drawings
Fig. 1 is the cross section structure schematic diagram for originally overcharging explosion-proof lithium battery one embodiment.
Fig. 2 is the dimensional structure diagram of negative plate in embodiment illustrated in fig. 1.
Specific embodiment
Embodiment
In the embodiment shown in Fig. 1, Fig. 2, originally overcharge explosion-proof lithium battery and include closed housing 1, positive pole and negative pole；
Copper Foil 2, negative plate 3, barrier film 4, positive plate 5 and aluminium foil 6 are stacked with successively from top to bottom in the housing 1；The electricity of the Copper Foil 2
Property the connection negative pole, the aluminium foil 6 is electrically connected with the positive pole；It is closed in the housing 1 to have electrolyte；In the negative pole
Equidistant close-packed array has delivery hole 31 on plate 3, and the aperture direction of each delivery hole 31 is vertical with the negative plate 3；Institute
State and corrugated projection is carved with relative with Copper Foil 2 face of negative plate 3；The position that each delivery hole 31 is opened up with it is described
The raised position of corrugated is just right；The surface of the Copper Foil 2 each described delivery hole 31 just to position at be further fixed in half
Spherical heat expansion projection 21；Insulating barrier is scribbled on the internal perisporium of each delivery hole 31, in negative plate 3 and the barrier film 4
Insulating barrier is also coated with the face for facing.
When charging, lithium ion moves about to negative plate 3 and forms lithium atom lithium battery through barrier film 4；When lithium battery is by mistake
When filling, direction when excessive lithium atom can come along lithium ion on negative plate 3 forms ingotism；Traditional lithium battery
In, the conducting surface of positive/negative plate is faced, therefore the vertical sensing positive plate 5 of ingotism that negative plate 3 is produced, the branch
The positive/negative plate directly contact that barrier film 4 is easily punctured and made by shape crystallization causes short circuit；Compared to traditional lithium battery, the present invention
In charging process, lithium ion leaves from positive plate 5, through barrier film 4 after along the delivery hole 31 reach negative plate 3 the back side,
Moved about between corrugated projection along the raised cambered surface of the corrugated by the lithium ion after delivery hole 31
Recess, the lithium atom layer for now being formed on negative plate 3 is concentrated between negative plate 3 and Copper Foil 2；Therefore in over-charging of battery,
The ingotism will grow between negative plate 3 and Copper Foil 2, effectively prevent ingotism from puncturing barrier film 4, and then prevent
Positive/negative plate short circuit；And the ingotism focus mostly in corrugated projection between recess, as shown in Figure 1；Therefore
Ingotism will not be extruded, wear and tear Copper Foil 2 so that structure of the invention is more stable.
Heat can be produced in battery charging and discharging, when the temperature of inside battery is higher, easily vaporizes electrolyte, caused
The expansion of battery, blast, in the present embodiment, the surface of the Copper Foil 2 each described delivery hole 31 just to position at be fixed with
Hemispherical heat expansion projection 21, heat expansion projection 21 will gradually expand with the rising of temperature, when the temperature of inside battery is too high
When, heat expansion projection 21 can block each delivery hole 31 because volumetric expansion is excessive, and then block the movement of lithium ion so that
Lithium battery open circuit, so as to play battery protection function.
Reforming technology of the present invention is simple, solves the problems, such as that barrier film 4 is destroyed from source and causes short circuit, with peace higher
Quan Xing, while having overheat short-circuit function, substantially increases the safety in utilization of lithium battery.
The foregoing is only presently preferred embodiments of the present invention, be not intended to limit the invention, it is all it is of the invention spirit and
Within principle, any modification, equivalent substitution and improvements made etc. should be included within the scope of the present invention.
Claims (1)
1. a kind of lithium battery overcharges explosion-proof method, the lithium battery to overcharge explosion-proof lithium battery, include closed housing (1),
Positive pole and negative pole；Copper Foil (2), negative plate (3), barrier film (4), positive plate are stacked with successively from top to bottom in the housing (1)
And aluminium foil (6) (5)；The Copper Foil (2) is electrically connected with the negative pole, and the aluminium foil (6) is electrically connected with the positive pole；In the shell
It is closed in body (1) to have electrolyte；It is characterized in that：Equidistant close-packed array has delivery hole (31) on the negative plate (3), respectively
The aperture direction of the delivery hole (31) is vertical with the negative plate (3)；Scribbled on the internal perisporium of each delivery hole (31)
Insulating barrier, insulating barrier is also coated with the face faced with the barrier film (4) of negative plate (3)；
Corrugated is carved with a face relative with Copper Foil (2) of the negative plate (3) raised；
The position that each delivery hole (31) the opens up position raised with the corrugated is just right；
The Copper Foil (2) surface each described delivery hole (31) just to position at be fixed with hemispherical heat expansion projection
(21)；
Overcharge explosion-proof method as follows：When charging, lithium ion moves about to negative plate (3) place and forms lithium lithium battery through barrier film (4)
Atom；When lithium battery is overcharged, direction when excessive lithium atom can come along lithium ion on negative plate (3) forms dendroid
Crystallization；In traditional lithium battery, the conducting surface of positive/negative plate is faced, therefore the ingotism that negative plate 3 is produced is vertical
Positive plate (5) is pointed to, the positive/negative plate directly contact that barrier film (4) is punctured and made easily is caused short circuit by the ingotism；Phase
Compared with traditional lithium battery, in charging process, lithium ion leaves the present invention from positive plate (5), through barrier film (4) after along described
Delivery hole (31) reaches the back side of negative plate (3)；
Move about recessed between raised to corrugated along the raised cambered surface of the corrugated by the lithium ion after delivery hole (31)
Place is fallen into, the lithium atom layer for now being formed on negative plate (3) is concentrated between negative plate (3) and Copper Foil (2)；Therefore in over-charging of battery
When, the ingotism will grow between negative plate (3) and Copper Foil (2), effectively prevent ingotism from puncturing barrier film
(4), so prevent positive/negative plate short circuit；And the ingotism focus mostly in corrugated projection between recess, because
This ingotism will not be extruded, the Copper Foil that weares and teares (2) so that structure of the invention is more stable；
Heat can be produced in battery charging and discharging, when the temperature of inside battery is higher, easily vaporizes electrolyte, cause battery
Expansion, blast, the Copper Foil (2) surface each described delivery hole (31) just to position at be fixed with hemispherical heat
Swollen projection (21), heat expansion projection (21) will gradually expand with the rising of temperature, and when the temperature of inside battery is too high, heat expansion is convex
Block (21) can block each delivery hole (31) because volumetric expansion is excessive, and then block the movement of lithium ion so that lithium electricity
Pond open circuit, so as to play battery protection function.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510406558.4A CN104953165B (en) | 2015-07-12 | 2015-07-12 | Overcharge explosion-proof lithium battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510406558.4A CN104953165B (en) | 2015-07-12 | 2015-07-12 | Overcharge explosion-proof lithium battery |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104953165A CN104953165A (en) | 2015-09-30 |
| CN104953165B true CN104953165B (en) | 2017-05-31 |
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ID=54167661
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510406558.4A Active CN104953165B (en) | 2015-07-12 | 2015-07-12 | Overcharge explosion-proof lithium battery |
Country Status (1)
| Country | Link |
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| CN (1) | CN104953165B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11168883B2 (en) | 2017-09-29 | 2021-11-09 | Rosemount Aerospace Inc. | Flame arrestor with fluid drainage capabilities |
| CN109391008A (en) * | 2018-11-20 | 2019-02-26 | 漳州高新区远见产业技术研究有限公司 | It is a kind of with the cellular li-ion battery for preventing from overcharging |
| CN110718697A (en) * | 2019-09-24 | 2020-01-21 | 厦门翔澧工业设计有限公司 | Chemical battery/capacitor for inhibiting self-discharge |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3838878B2 (en) * | 2000-04-28 | 2006-10-25 | 松下電器産業株式会社 | Battery electrode plate and manufacturing method thereof |
| CN201233936Y (en) * | 2008-04-26 | 2009-05-06 | 比亚迪股份有限公司 | Battery electric core and battery comprising the electric core |
| CN102394279A (en) * | 2011-09-26 | 2012-03-28 | 余建岳 | Charging explosion-proof temperature control lithium ion battery |
| CN204793058U (en) * | 2015-07-12 | 2015-11-18 | 陈卡丹 | Cross and fill explosion -proof lithium cell |
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- 2015-07-12 CN CN201510406558.4A patent/CN104953165B/en active Active
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| Publication number | Publication date |
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| CN104953165A (en) | 2015-09-30 |
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Legal Events
| Date | Code | Title | Description |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C41 | Transfer of patent application or patent right or utility model | ||
| CB03 | Change of inventor or designer information |
Inventor after: Li Qinqin Inventor before: Chen Kadan |
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| COR | Change of bibliographic data | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20170117 Address after: 510665 Guangdong city of Guangzhou province Tianhe District Software Park Building No. 59 Middle East block, Grand Building Room 501 Applicant after: GUANGDONG WANNIU INTELLECTUAL PROPERTY OPERATION CO.,LTD. Address before: 3 groups of Zeya town Ouhai District Sanyang village 325023 Zhejiang city of Wenzhou Province Applicant before: Chen Kadan |
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| CB03 | Change of inventor or designer information |
Inventor after: Gong Huan Inventor after: Jiang Xinhua Inventor after: Qu Xiaohui Inventor before: Li Qinqin |
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| CB03 | Change of inventor or designer information | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20170410 Address after: 523000 Guangdong city of Dongguan province Sima Changping Zhen Sima Cun Huang Ni Tian Congnan Industrial Development Zone North Second Building Applicant after: DONGGUAN SHENGLI ENERGY TECHNOLOGY Co.,Ltd. Address before: 510665 Guangdong city of Guangzhou province Tianhe District Software Park Building No. 59 Middle East block, Grand Building Room 501 Applicant before: GUANGDONG WANNIU INTELLECTUAL PROPERTY OPERATION CO.,LTD. |
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| TR01 | Transfer of patent right |
Effective date of registration: 20230801 Address after: Room 102, Building 3, No. 39 Gangjian Road, Changping Town, Dongguan City, Guangdong Province, 523000 Patentee after: Guangdong Shengli High tech Energy Technology Co.,Ltd. Address before: 523000 Building 2, Sima huangnitian, Industrial Development Zone, Sima village, Changping Town, Dongguan City, Guangdong Province Patentee before: DONGGUAN SHENGLI ENERGY TECHNOLOGY Co.,Ltd. |