CN106469832A - A kind of safeguard construction of lithium ion battery - Google Patents
A kind of safeguard construction of lithium ion battery Download PDFInfo
- Publication number
- CN106469832A CN106469832A CN201510511852.1A CN201510511852A CN106469832A CN 106469832 A CN106469832 A CN 106469832A CN 201510511852 A CN201510511852 A CN 201510511852A CN 106469832 A CN106469832 A CN 106469832A
- Authority
- CN
- China
- Prior art keywords
- lithium ion
- battery
- ion battery
- core
- safeguard construction
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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.)
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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
- H01M10/058—Construction or manufacture
- H01M10/0585—Construction or manufacture of accumulators having only flat construction elements, i.e. flat positive electrodes, flat negative electrodes and flat separators
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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
- H01M10/058—Construction or manufacture
- H01M10/0587—Construction or manufacture of accumulators having only wound construction elements, i.e. wound positive electrodes, wound negative electrodes and wound separators
-
- 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
-
- 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
- H01M4/64—Carriers or collectors
- H01M4/66—Selection of materials
- H01M4/661—Metal or alloys, e.g. alloy coatings
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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
- H01M4/00—Electrodes
- H01M4/02—Electrodes composed of, or comprising, active material
- H01M4/64—Carriers or collectors
- H01M4/70—Carriers or collectors characterised by shape or form
- H01M4/75—Wires, rods or strips
-
- 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
- H01M50/50—Current conducting connections for cells or batteries
- H01M50/572—Means for preventing undesired use or discharge
- H01M50/584—Means for preventing undesired use or discharge for preventing incorrect connections inside or outside the batteries
- H01M50/59—Means for preventing undesired use or discharge for preventing incorrect connections inside or outside the batteries characterised by the protection means
- H01M50/597—Protection against reversal of polarity
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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
- H01M2200/00—Safety devices for primary or secondary batteries
- H01M2200/30—Preventing polarity reversal
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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
-
- 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
Abstract
The invention provides a kind of safeguard construction of lithium ion battery, by changing core strueture it is intended to solve such as acupuncture, extruding during non-normal use lithium ion battery, easily cause battery explosion problem on fire.A kind of safeguard construction of stack type lithium ion battery, it passes through all to distinguish, in battery core both sides, the copper foil current collector adding an aluminum foil current collector and a barrier film parcel successively.A kind of safeguard construction of coiled lithium ion battery, the positive/negative plate that a layer of core outermost is coating clear area, and core internal layer is traditional core structure.With respect to prior art, when battery is subject to external force extruding or acupuncture, outside or outer copper foil collector and aluminum foil current collector preferentially turn on, and form current loop, the quick release energy content of battery, it is to avoid battery thermal runaway, fundamentally solve safety problem.This structural manufacturing process is simple, and low cost no affects on battery performance.
Description
Technical field
The present invention relates to technical field of lithium ion, in particular, provide a kind of safety of lithium ion battery
Structure.
Background technology
Lithium ion battery because its energy density high, specific power is big, good cycle, memory-less effect, no
The advantage of the aspects such as contaminative, and there is good economic benefit, social benefit and strategic importance, and standby
Favored by various countries research staff and government.Due to the dual-pressure of the energy and environment, national governments throw in succession
Huge fund is studying lithium ion battery for electric vehicle.Battery security is to restrict high-capacity lithium-ion power current at present
The main obstacle of pond application, wherein, piercing through, extrude etc. is that exopathogenic factor causes lithium ion battery unsafe act
Risk factor.
When above behavior causes inside battery partial short-circuit, easily cause thermal runaway, continuous with temperature
Soaring, there are various reactions in inside battery, for example：SEI film decomposes, and positive electrode decomposes discharge oxygen,
Electrolyte oxidation decomposes, LixC6With PVDF chain reaction etc..Various reactions lead to battery temperature persistently to rise
While with a large amount of gases generate, cause inner pressure of battery temperature drastically to raise, there is blast, burning etc. no
Potential safety hazard.The safe design of conventional lithium ion battery, nothing more than three kinds of sides such as current limliting, power-off and outgassing
Formula.During the rising abnormal mainly for inner pressure of battery of these methods, the safeguard protection means that adopted it is impossible to
Violent reaction after fundamentally containing the thermal runaway that common external force causes, still has very strong danger.When
When battery is subject to foreign object extruding or pierces through, there is hot-spot, internal short-circuit produces spark, releases, explodes
Etc. phenomenon, and there is safety problem.When battery such as is pierced through, is extruded at the unsafe act, rational battery
The energy content of battery can be discharged rapidly by structure, fundamentally contains the generation of thermal runaway.
Content of the invention
For solving above-mentioned technical problem, the present invention provides a kind of safeguard construction of lithium ion battery, and this structure is led to
Cross change core strueture it is intended to solve such as acupuncture, extruding during non-normal use lithium ion battery, easily cause electricity
Pond problem on fire from explosion.This structural manufacturing process is simple, and low cost no affects on battery performance.
To achieve these goals, the technical scheme is that：
A kind of safeguard construction of stack type lithium ion battery, its pass through battery core both sides respectively successively (from interior to
Outward) plus an aluminum foil current collector and barrier film parcel copper foil current collector, referred to as " waistcoat " structure (or " folder
The heart " structure).Described aluminum foil current collector size as the positive plate of battery core, copper foil current collector size
Size is as the negative plate of battery core.Described aluminum foil current collector is alignd with positive plate setting, copper foil current collector with
Negative plate alignment setting.The diaphragm size size of copper foil current collector described in parcel battery core both sides and parcel negative plate
Barrier film the same.The barrier film of the barrier film and parcel negative pole that wrap up described copper foil current collector aligns setting.Copper Foil collection
Pass through between fluid, negative lug and negative plate to be welded to connect.Aluminum foil current collector, positive pole ear and positive plate
Between by being welded to connect.
When battery is subject to acupuncture, the safeguard construction of the above-mentioned stack type lithium ion battery of the present invention can occur electricity
Copper foil current collector outside core and aluminum foil current collector preferentially turn on, and form current loop, make the big of moment generation
Electric current is uniformly distributed in copper foil current collector and aluminum foil current collector, the quick release energy content of battery, reduce temperature rise and
Heat production, it is to avoid battery thermal runaway.
When battery is subject to external compression, the battery core short circuit occurred inside of traditional structure, moment produces substantial amounts of
Heat, temperature raises rapidly, leads to the electrolyte within battery core, positive electrode to reach decomposition temperature, release
Oxygen, causes chain reaction, leads to thermal runaway.Stack type lithium ion battery safety using the present invention program
Structure, when battery is subject to external force to extrude it may occur that the copper foil current collector outside battery core and aluminum foil current collector are excellent
First contact, form electronic loop, the quick release energy content of battery, it is to avoid batteries caught fire that thermal runaway causes and quick-fried
Fried.
Alternatively, present invention also offers a kind of safeguard construction of coiled lithium ion battery, roll up
The positive/negative plate that one layer of core outermost is coating clear area (that is, the blank out aluminium foil connecting with positive/negative plate
Collector and the blank out copper foil current collector of barrier film parcel), core internal layer is traditional core structure.
When battery is subject to acupuncture, the safeguard construction of the coiled lithium ion battery of the present invention can occur core
The blank copper foil current collector of outer layer and blank aluminum foil current collector preferentially turn on, and form current loop, so that moment is produced
Raw high current is uniformly distributed in copper foil current collector and aluminum foil current collector, the quick release energy content of battery, reduces
Temperature rise and heat production, it is to avoid battery thermal runaway.
When battery is subject to external compression, the battery core short circuit occurred inside of traditional structure, moment produces substantial amounts of
Heat, temperature raises rapidly, leads to the electrolyte within battery core, positive electrode to reach decomposition temperature, release
Oxygen, causes chain reaction, leads to thermal runaway.Coiled lithium ion battery safety using the present invention program
Structure, when battery is subject to external force to extrude it may occur that core outermost blank copper foil current collector and blank aluminum
Paper tinsel collector preferential contact, forms electronic loop, the quick release energy content of battery, it is to avoid the electricity that thermal runaway causes
Pond catches fire and explodes.
Brief description
Fig. 1 is the internal three-dimensional schematic diagram of stack type lithium ion battery of embodiments of the invention 1.
Fig. 2 is the stack type lithium ion battery inner section schematic diagram of embodiments of the invention 1.
Fig. 3 is the coiled lithium ion battery inner section schematic diagram of embodiments of the invention 2.
Specific embodiment
In conjunction with the drawings and specific embodiments, the present invention is further described.
Embodiment 1
As a specific embodiment, referring to Fig. 1 and Fig. 2, a kind of stack type lithium ion battery of the present invention
Safeguard construction, including barrier film 1, copper foil current collector 2, aluminum foil current collector 3, positive plate 4, negative plate 5,
Battery core 6, positive pole ear 7, negative lug 8.As depicted in figs. 1 and 2, dotted line inframe is tradition/conventional electricity
Core, sets gradually an aluminum foil current collector 3 and the Copper Foil afflux of barrier film 1 parcel respectively in battery core both sides
Body 2；Aluminum foil current collector 3 size as positive plate 4 and setting of aliging, copper foil current collector 2 size
Size is as negative plate 5 and setting of aliging；Barrier film 1 size of parcel battery core both sides copper foil current collector 2
Size is as the barrier film 1 of parcel negative plate, setting of aliging.When battery is subject to external compression or acupuncture,
Copper foil current collector outside battery core and aluminum foil current collector preferentially turn on, and form outermost current loop, quickly
The release energy content of battery, it is to avoid battery thermal runaway, fundamentally solves safety problem.
Wherein, pass through between copper foil current collector 2, negative lug 8 and negative plate 5 to be welded to connect.Aluminium foil afflux
Pass through between body 3, positive pole ear 7 and positive plate 4 to be welded to connect.
Embodiment 2
As a specific embodiment, referring to Fig. 3, a kind of safety of coiled lithium ion battery of the present invention
Structure, including barrier film 1, blank copper foil current collector 2, blank aluminum foil current collector 3 and internal tradition core (bag
Include positive plate 4 and negative plate 5), wherein, blank copper foil current collector 2 and blank aluminum foil current collector 3 can be for passing
The coating clear area of outermost positive/negative plate of system core, width are core outermost layer girth, i.e. cover
Entirely internal tradition core.When battery is subject to external force extruding or acupuncture, the blank Copper Foil collection of core outer layer
Fluid and blank aluminum foil current collector preferentially turn on, and form current loop, the quick release energy content of battery, it is to avoid electricity
Pond thermal runaway, fundamentally solves safety problem.
The above is only the preferred embodiment of the present invention it is noted that common for the art
For technical staff, under the premise without departing from the principles of the invention, some improvements and modifications can also be made,
These improvements and modifications also should be regarded as protection scope of the present invention.
Claims (9)
1. a kind of safeguard construction of stack type lithium ion battery it is characterised in that：Distinguish from the inside to the outside in battery core both sides
Set gradually an aluminum foil current collector and the copper foil current collector of a barrier film parcel.
2. stack type lithium ion battery according to claim 1 safeguard construction it is characterised in that：Described copper
Paper tinsel collector passes through to be welded to connect with the negative lug of battery core and negative plate.
3. the safeguard construction of stack type lithium ion battery according to claim 1 is it is characterised in that described aluminum
Paper tinsel collector passes through to be welded to connect with the positive pole ear of battery core and positive plate.
4. the safeguard construction of stack type lithium ion battery according to claim 1 is it is characterised in that described aluminum
Paper tinsel collector is identical with the positive plate size of battery core.
5. the safeguard construction of stack type lithium ion battery according to claim 4 is it is characterised in that described aluminum
Paper tinsel collector is alignd with positive plate setting.
6. the safeguard construction of stack type lithium ion battery according to claim 1 is it is characterised in that described copper
Paper tinsel collector is identical with the negative plate size of battery core.
7. the safeguard construction of stack type lithium ion battery according to claim 6 is it is characterised in that described copper
Paper tinsel collector is alignd with negative plate setting.
8. the safeguard construction of stack type lithium ion battery according to claim 1 is it is characterised in that wrap up copper
The diaphragm size size of paper tinsel collector and parcel negative plate barrier film size is identical and setting of aliging.
9. a kind of safeguard construction of coiled lithium ion battery it is characterised in that：One layer of the core outermost of battery
Positive and negative extremely coating clear area, core internal layer is traditional core structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510511852.1A CN106469832A (en) | 2015-08-19 | 2015-08-19 | A kind of safeguard construction of lithium ion battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510511852.1A CN106469832A (en) | 2015-08-19 | 2015-08-19 | A kind of safeguard construction of lithium ion battery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106469832A true CN106469832A (en) | 2017-03-01 |
Family
ID=58213945
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510511852.1A Pending CN106469832A (en) | 2015-08-19 | 2015-08-19 | A kind of safeguard construction of lithium ion battery |
Country Status (1)
| Country | Link |
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| CN (1) | CN106469832A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112670597A (en) * | 2020-12-21 | 2021-04-16 | 珠海冠宇电池股份有限公司 | Electrode assembly, electrochemical device and electronic equipment |
| CN113497268A (en) * | 2020-03-18 | 2021-10-12 | 荣盛盟固利新能源科技有限公司 | Soft-packaged battery core structure, soft-packaged battery and electrochemical device |
| CN113764835A (en) * | 2020-05-27 | 2021-12-07 | 荣盛盟固利新能源科技有限公司 | Battery safety protection device and laminated lithium ion battery |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203026604U (en) * | 2012-10-31 | 2013-06-26 | 东莞市金源电池科技有限公司 | Cell structure of soft-package lithium battery |
| CN203119049U (en) * | 2013-01-09 | 2013-08-07 | 宁德新能源科技有限公司 | Lithium ion battery |
| CN203910923U (en) * | 2014-03-17 | 2014-10-29 | 山东润峰集团新能源科技有限公司 | High-performance flexible package lithium ion battery cell |
| CN204204985U (en) * | 2014-10-11 | 2015-03-11 | 东莞市鸿德电池有限公司 | The anti-needling structure battery core of lithium ion battery and lithium ion battery thereof |
-
2015
- 2015-08-19 CN CN201510511852.1A patent/CN106469832A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203026604U (en) * | 2012-10-31 | 2013-06-26 | 东莞市金源电池科技有限公司 | Cell structure of soft-package lithium battery |
| CN203119049U (en) * | 2013-01-09 | 2013-08-07 | 宁德新能源科技有限公司 | Lithium ion battery |
| CN203910923U (en) * | 2014-03-17 | 2014-10-29 | 山东润峰集团新能源科技有限公司 | High-performance flexible package lithium ion battery cell |
| CN204204985U (en) * | 2014-10-11 | 2015-03-11 | 东莞市鸿德电池有限公司 | The anti-needling structure battery core of lithium ion battery and lithium ion battery thereof |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113497268A (en) * | 2020-03-18 | 2021-10-12 | 荣盛盟固利新能源科技有限公司 | Soft-packaged battery core structure, soft-packaged battery and electrochemical device |
| CN113764835A (en) * | 2020-05-27 | 2021-12-07 | 荣盛盟固利新能源科技有限公司 | Battery safety protection device and laminated lithium ion battery |
| CN112670597A (en) * | 2020-12-21 | 2021-04-16 | 珠海冠宇电池股份有限公司 | Electrode assembly, electrochemical device and electronic equipment |
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| PB01 | Publication | ||
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Application publication date: 20170301 |