CN202905908U - Lithium ion secondary battery adopting coiled cell - Google Patents
Lithium ion secondary battery adopting coiled cell Download PDFInfo
- Publication number
- CN202905908U CN202905908U CN2012205312171U CN201220531217U CN202905908U CN 202905908 U CN202905908 U CN 202905908U CN 2012205312171 U CN2012205312171 U CN 2012205312171U CN 201220531217 U CN201220531217 U CN 201220531217U CN 202905908 U CN202905908 U CN 202905908U
- Authority
- CN
- China
- Prior art keywords
- pole piece
- barrier film
- current collector
- negative
- battery
- 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.)
- Expired - Lifetime
Links
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 title abstract description 20
- 229910001416 lithium ion Inorganic materials 0.000 title abstract description 20
- 230000004888 barrier function Effects 0.000 claims description 36
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 claims description 20
- 229910052744 lithium Inorganic materials 0.000 claims description 20
- 239000000463 material Substances 0.000 claims description 16
- 239000004743 Polypropylene Substances 0.000 claims description 14
- 239000012528 membrane Substances 0.000 claims description 13
- 239000004698 Polyethylene Substances 0.000 claims description 10
- -1 polypropylene Polymers 0.000 claims description 8
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 7
- 239000011889 copper foil Substances 0.000 claims description 7
- 239000004952 Polyamide Substances 0.000 claims description 4
- 239000005030 aluminium foil Substances 0.000 claims description 4
- 239000011521 glass Substances 0.000 claims description 4
- 229920002647 polyamide Polymers 0.000 claims description 4
- 229920000573 polyethylene Polymers 0.000 claims description 4
- 229920001155 polypropylene Polymers 0.000 claims description 4
- 238000000034 method Methods 0.000 abstract description 4
- 238000004519 manufacturing process Methods 0.000 abstract description 2
- 238000007599 discharging Methods 0.000 abstract 1
- 229910052751 metal Inorganic materials 0.000 abstract 1
- 239000002184 metal Substances 0.000 abstract 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 4
- 229910010707 LiFePO 4 Inorganic materials 0.000 description 2
- 229910002097 Lithium manganese(III,IV) oxide Inorganic materials 0.000 description 2
- 239000002253 acid Substances 0.000 description 2
- 229910052799 carbon Inorganic materials 0.000 description 2
- 239000003610 charcoal Substances 0.000 description 2
- 239000010941 cobalt Substances 0.000 description 2
- 229910017052 cobalt Inorganic materials 0.000 description 2
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 229910002804 graphite Inorganic materials 0.000 description 2
- 239000010439 graphite Substances 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 238000001467 acupuncture Methods 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 239000007772 electrode material Substances 0.000 description 1
- 238000009863 impact test Methods 0.000 description 1
- 238000001465 metallisation Methods 0.000 description 1
- 238000011056 performance test Methods 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
Images
Classifications
-
- 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
- Secondary Cells (AREA)
- Cell Electrode Carriers And Collectors (AREA)
Abstract
The utility model relates to a lithium ion secondary battery adopting a coiled cell, and belongs to the technical field of manufacture of cells of lithium ion secondary batteries. The structure of the lithium ion secondary battery adopting the coiled cell is that the coiling lengths of a first diaphragm (7), a cathode current collector (12) and a second diaphragm (8) of the cell are arranged to be one more circle than the coiling lengths of an anode piece (9) and a cathode piece (10), so that the cathode current collector is wrapped in a circle at the outer layer of the cell; once an outer metal object is pierced into the battery, a housing of the battery is contacted with the cathode current collector first, and a high current discharging process is instantaneously caused, therefore, the electrical charge state (SOC (System on a Chip)) of the cathode can be reduced, on the other hand, a short circuit point is enlarged, and as a result, the probability that the battery meets thermal runaway can be greatly reduced; the cathode piece and the anode piece can be most effectively insulated and separated at the same time through the structure of the lithium ion secondary battery adopting the coiled cell, so that the capacity of the cell to resist disturbance is improved, the phenomenon of short circuit or puncturing can be avoided, and the stability of the whole battery can be improved.
Description
Technical field
The utility model relates to a kind of lithium rechargeable battery, and more particularly, the utility model relates to a kind of lithium rechargeable battery that uses the takeup type battery core, belongs to the manufacturing technology field of lithium rechargeable battery battery core.
Background technology
Compare with other chemical power source, lithium ion battery has the performance of many excellences, high such as energy density, have extended cycle life, open circuit voltage is high, memory-less effect, safety non-pollution etc., develop rapidly through recent two decades is applied in the field of portable devices such as mobile phone, notebook computer, digital camera widely.In recent years, along with the further raising of lithium ion battery energy density, its application just progressively is extended to the high-tech sectors such as Aero-Space, satellite, guided missile electric automobile.
As everyone knows, lithium ion battery some unpredictable abuse condition can occur unavoidably in the process of using, as: overcharge, push, pierce through etc., serious threat consumer's safety.Can the fail safe and the fail safe under abuse condition that therefore, how to improve lithium ion battery be used most important for lithium ion battery on a large scale.Current, for the fail safe that how to improve lithium ion battery, a large amount of research has all been done by each large research institution and enterprise, is mainly manifested in the following aspects:
(1) the thermally-stabilised and fail safe of raising battery material is such as the diaphragm material of exploitation Heat stability is good, constitutionally stable electrode active material etc.;
(2) reliability and stability of raising battery all parts;
(3) design safety starting drive is such as CID, impression, FUSE, explosion-proof valve etc.
With upper type for lithium ion battery in the situation that slow abuse; can play certain safety protective effect, still, for extruding or the situation about being abused fast such as pierce through; all have little time response with upper type, can't be to lithium ion battery realization safeguard protection truly.
The utility model content
The purpose of this utility model is to solve in the prior art under abuse condition, and especially in extruding or pierce through and wait situation about abusing fast, the defective that lithium ion battery security is poor provides a kind of novel high security lithium ion secondary battery.
For realizing order of the present utility model, its concrete technical scheme is as follows:
A kind of lithium rechargeable battery that uses the takeup type battery core comprises battery case, battery core, positive pole ear, negative lug, positive terminal and negative pole end, and wherein battery core is from inside to outside reeled by anode pole piece, cathode pole piece and two-layer barrier film and formed, and is the coiling layer structure; The positive electrode that described anode pole piece comprises plus plate current-collecting body and is coated in the anode collection surface, the negative material that described cathode pole piece comprises negative current collector and is coated in the negative pole currect collecting surface, it is characterized in that: begin the place at coiling, from inside to outside be followed successively by the first barrier film, cathode pole piece, the second barrier film and anode pole piece; In coiling end, from inside to outside be followed successively by anode pole piece, the first barrier film, negative current collector and the second barrier film; The many circles of the coiling Length Ratio anode pole piece of described the first barrier film, negative current collector and the second barrier film and cathode pole piece.
Negative current collector described in the utility model is Copper Foil.
Plus plate current-collecting body described in the utility model is aluminium foil.
Negative material described in the utility model is to be coated at least one side of negative current collector.
Above-mentioned negative material is conventional negative material well known in the art, such as in Delanium, native graphite, hard charcoal, the agraphitic carbon one or more.
Positive electrode described in the utility model is to be coated at least one side of plus plate current-collecting body.
Above-mentioned positive electrode is conventional negative material well known in the art, such as one or more of cobalt acid lithium, LiFePO 4, LiMn2O4, ternary material.
The first barrier film described in the utility model and the second barrier film are polypropylene micro-porous film (PP), microporous polyethylene film (PE), glass mat or trilamellar membrane (PP/PE/PP), polyamide membrane (PI).
Useful technique effect:
Compare with traditional lithium ion battery, the battery core skin of the utility model lithium ion battery has wrapped up a circle negative current collector (Copper Foil), when having the external metallization object to thrust inside battery, battery case (being equivalent to anode) at first contacts with negative current collector (Copper Foil), moment produces a heavy-current discharge process, can reduce on the one hand negative pole state-of-charge (SOC), increased short dot on the other hand, greatly reduce the probability of battery thermal runaway.In order to improve self antijamming capability of battery core, structure of the present utility model simultaneously can the anticathode pole piece and the anode pole piece blocking-up of the most effectively insulating, and short circuit or punch-through can not occur, improves cell integrated stability.
Description of drawings
Fig. 1 is the utility model lithium ion battery structure schematic diagram.
Fig. 2 is traditional electrical cored structure generalized section.
Fig. 3 is the pond core strueture generalized section of the utility model lithium-ion electric.
Reference numeral: 1 is that battery case, 2 is that battery core, 3 is that positive pole ear, 4 is that negative lug, 5 is that positive terminal, 6 is that negative pole end, 7 is that the first barrier film, 8 is that the second barrier film, 9 is that anode pole piece, 10 is that cathode pole piece, 11 is that plus plate current-collecting body, 12 is negative current collector.
Embodiment
A kind of lithium rechargeable battery that uses the takeup type battery core, comprise battery case 1, battery core 2, positive pole ear 3, negative lug 4, positive terminal 5 and negative pole end 6, wherein battery core 2 is from inside to outside reeled by anode pole piece 9, cathode pole piece 10 and two-layer barrier film and is formed, and is the coiling layer structure; Described anode pole piece 3 comprises plus plate current-collecting body 11 and the positive electrode that is coated in plus plate current-collecting body 11 surfaces, described cathode pole piece 10 comprises negative current collector 12 and the negative material that is coated in negative current collector 12 surfaces, begin the place at coiling, from inside to outside be followed successively by the first barrier film 7, cathode pole piece 10, the second barrier film 8 and anode pole piece 9; In coiling end, from inside to outside be followed successively by anode pole piece 9, the first barrier film 7, negative current collector 12 and the second barrier film 8; The coiling Length Ratio anode pole piece 5 of described the first barrier film 7, negative current collector 12 and the second barrier film 8 and cathode pole piece more than 10 one circles.
On the basis of embodiment 1, preferred:
A kind of lithium rechargeable battery that uses the takeup type battery core, comprise battery case 1, battery core 2, positive pole ear 3, negative lug 4, positive terminal 5 and negative pole end 6, wherein battery core 2 is from inside to outside reeled by anode pole piece 9, cathode pole piece 10 and two-layer barrier film and is formed, and is the coiling layer structure; Described anode pole piece 3 comprises plus plate current-collecting body 11 and the positive electrode that is coated in plus plate current-collecting body 11 surfaces, described cathode pole piece 10 comprises negative current collector 12 and the negative material that is coated in negative current collector 12 surfaces, begin the place at coiling, from inside to outside be followed successively by the first barrier film 7, cathode pole piece 10, the second barrier film 8 and anode pole piece 9; In coiling end, from inside to outside be followed successively by anode pole piece 9, the first barrier film 7, negative current collector 12 and the second barrier film 8; The coiling Length Ratio anode pole piece 9 of described the first barrier film 7, negative current collector 12 and the second barrier film 8 and cathode pole piece more than 10 one circles.
Described negative current collector 12 is Copper Foil.
Described plus plate current-collecting body 11 is aluminium foil.
Described negative material is to be coated at least one side of negative current collector 12.
Described positive electrode is to be coated at least one side of plus plate current-collecting body 11.
Described the first barrier film 7 and the second barrier film 8 are polypropylene micro-porous film, microporous polyethylene film, glass mat, PP/PE/PP trilamellar membrane or polyamide membrane.
A kind of novel high-safety lithium battery core strueture comprises that anode pole piece 9, cathode pole piece 10 and two-layer membrane layer form; Two-layer membrane layer is enclosed within on the U-shaped volume pin first, rotate half-turn, insert cathode pole piece 10, rotate again half-turn, insert again anode pole piece 9, after the design number of turns of again anode pole piece 9, two-layer membrane layer and cathode pole piece 10 being reeled together again with negative current collector 12(Copper Foil) and the two-layer membrane layer circle of reeling together, form at last the high-safety lithium battery core strueture.
Further, above-mentioned high-safety lithium battery core strueture, wherein, 10 are extended with negative pole end on the described cathode pole piece; Above-mentioned cathode pole piece 10 refers to negative material evenly is coated at least one side of Copper Foil; Described negative material is one or more in Delanium, native graphite, hard charcoal, the agraphitic carbon.
Further, above-mentioned high-safety lithium battery core strueture wherein, is extended with positive terminal 5 on the described anode pole piece 9; Above-mentioned anode pole piece 9 refers to positive electrode evenly is coated at least one side of aluminium foil; Described positive electrode is one or more of cobalt acid lithium, LiFePO 4, LiMn2O4, ternary material.
Further, above-mentioned high-safety lithium battery core strueture, wherein, described two-layer membrane layer is polypropylene micro-porous film (PP), microporous polyethylene film (PE), glass mat, trilamellar membrane (PP/PE/PP) or polyamide membrane (PI).
The security performance test
Experimental result is as shown in table 1.
Table 1
Can find out that from experimental group 1～8 and control group 1～8 battery core of the utility model structure can significantly improve the fail safe of battery.
Claims (6)
1. lithium rechargeable battery that uses the takeup type battery core, comprise battery case (1), battery core (2), positive pole ear (3), negative lug (4), positive terminal (5) and negative pole end (6), wherein battery core (2) is from inside to outside reeled by anode pole piece (9), cathode pole piece (10) and two-layer barrier film and is formed, and is the coiling layer structure; The positive electrode that described anode pole piece (3) comprises plus plate current-collecting body (11) and is coated in plus plate current-collecting body (11) surface, the negative material that described cathode pole piece (10) comprises negative current collector (12) and is coated in negative current collector (12) surface, it is characterized in that: begin the place at coiling, from inside to outside be followed successively by the first barrier film (7), cathode pole piece (10), the second barrier film (8) and anode pole piece (9); In coiling end, from inside to outside be followed successively by anode pole piece (9), the first barrier film (7), negative current collector (12) and the second barrier film (8); The coiling Length Ratio anode pole piece (9) of described the first barrier film (7), negative current collector (12) and the second barrier film (8) and cathode pole piece (10) Duo Yiquan.
2. a kind of lithium rechargeable battery that uses the takeup type battery core according to claim 1, it is characterized in that: described negative current collector (12) is Copper Foil.
3. a kind of lithium rechargeable battery that uses the takeup type battery core according to claim 1, it is characterized in that: described plus plate current-collecting body (11) is aluminium foil.
4. a kind of lithium rechargeable battery that uses the takeup type battery core according to claim 1 is characterized in that: described negative material is at least one side that is coated in negative current collector (12).
5. a kind of lithium rechargeable battery that uses the takeup type battery core according to claim 1 is characterized in that: described positive electrode is at least one side that is coated in plus plate current-collecting body (11).
6. a kind of lithium rechargeable battery that uses the takeup type battery core according to claim 1 is characterized in that: described the first barrier film (7) and the second barrier film (8) are polypropylene micro-porous film, microporous polyethylene film, glass mat, PP/PE/PP trilamellar membrane or polyamide membrane.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012205312171U CN202905908U (en) | 2012-10-17 | 2012-10-17 | Lithium ion secondary battery adopting coiled cell |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012205312171U CN202905908U (en) | 2012-10-17 | 2012-10-17 | Lithium ion secondary battery adopting coiled cell |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202905908U true CN202905908U (en) | 2013-04-24 |
Family
ID=48126537
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012205312171U Expired - Lifetime CN202905908U (en) | 2012-10-17 | 2012-10-17 | Lithium ion secondary battery adopting coiled cell |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202905908U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105576190A (en) * | 2014-11-04 | 2016-05-11 | 三星Sdi株式会社 | Rechargeable battery |
| KR20190039641A (en) * | 2017-10-05 | 2019-04-15 | 로베르트 보쉬 게엠베하 | Battery cell for a lithium-ion-battery |
| CN112490493A (en) * | 2021-01-19 | 2021-03-12 | 郭彬彬 | Safe square metal shell lithium ion battery |
| CN113571777A (en) * | 2021-07-19 | 2021-10-29 | 恒大新能源汽车投资控股集团有限公司 | Winding type battery cell and lithium ion battery |
-
2012
- 2012-10-17 CN CN2012205312171U patent/CN202905908U/en not_active Expired - Lifetime
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105576190A (en) * | 2014-11-04 | 2016-05-11 | 三星Sdi株式会社 | Rechargeable battery |
| US10454091B2 (en) | 2014-11-04 | 2019-10-22 | Samsung Sdi Co., Ltd. | Rechargeable battery comprising first and second electrodes each comprising uncoated regions and coated regions |
| CN105576190B (en) * | 2014-11-04 | 2021-06-01 | 三星Sdi株式会社 | Rechargeable battery |
| KR20190039641A (en) * | 2017-10-05 | 2019-04-15 | 로베르트 보쉬 게엠베하 | Battery cell for a lithium-ion-battery |
| CN109638217A (en) * | 2017-10-05 | 2019-04-16 | 罗伯特·博世有限公司 | Battery cell for Li-ion batteries piles |
| CN109638217B (en) * | 2017-10-05 | 2023-04-07 | 罗伯特·博世有限公司 | Battery cell for lithium ion battery pack |
| KR102643404B1 (en) * | 2017-10-05 | 2024-03-07 | 로베르트 보쉬 게엠베하 | Battery cell for a lithium-ion-battery |
| CN112490493A (en) * | 2021-01-19 | 2021-03-12 | 郭彬彬 | Safe square metal shell lithium ion battery |
| CN113571777A (en) * | 2021-07-19 | 2021-10-29 | 恒大新能源汽车投资控股集团有限公司 | Winding type battery cell and lithium ion battery |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN1321477C (en) | Lithium ion secondary cell | |
| CN102544578B (en) | Lithium ion battery capable of improving comprehensive performance | |
| CN103441237B (en) | The chain type Li-ion batteries piles of buckle type lithium ion battery | |
| WO2012129974A1 (en) | Fast charging method for rechargeable battery | |
| CN103247823A (en) | All-solid lithium-ion battery and manufacturing method thereof | |
| CN102263287B (en) | Lithium ion battery using graphite having multiphase structure as negative pole material | |
| CN202905908U (en) | Lithium ion secondary battery adopting coiled cell | |
| CN101667658A (en) | Iron phosphate lithium-based blended anode material series lithium ion battery | |
| CN101714656A (en) | Lithium-ion secondary battery | |
| CN202839867U (en) | Electric core of coiled lithium ion secondary battery | |
| CN203119049U (en) | Lithium ion battery | |
| CN202651263U (en) | Cathode piece for lithium ion battery and lithium ion battery | |
| CN101894971A (en) | Lithium-ion secondary battery | |
| CN212113877U (en) | Lithium ion battery positive and negative plate structure and lithium ion battery | |
| CN202034434U (en) | Lithium ion battery positive plate and lithium ion battery with positive plate | |
| CN103346356B (en) | Lithium ion battery as well as preparation method thereof and lithium-ion battery pack | |
| CN201918464U (en) | High-magnification cylindrical lithium ion battery | |
| CN102412414A (en) | Manufacturing method of novel power lithium ion battery capable of being safely charged at low temperature | |
| CN202616342U (en) | Lithium-ion secondary battery negative pole | |
| CN106299553B (en) | A kind of lithium ion battery and preparation method thereof | |
| CN101794905A (en) | Energy storage device and manufacturing method thereof | |
| CN102299375B (en) | Lithium ion power battery and preparation method thereof | |
| CN206059514U (en) | A kind of cuprio lithium piece negative pole poly-lithium battery | |
| CN103456912B (en) | Chain type Li-ion batteries piles | |
| CN203445176U (en) | Chained lithium ion battery pack |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20180423 Address after: 610000, No. 18, West core road, hi tech West District, Sichuan, Chengdu Patentee after: DONGFANG ELECTRIC Co.,Ltd. Address before: Jinniu District Chengdu City, Sichuan province 610036 Shu Road No. 333 Patentee before: DONGFANG ELECTRIC Corp. |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130424 |