CN101127389B - A column lithium ion electric core, battery and its making method - Google Patents
A column lithium ion electric core, battery and its making method Download PDFInfo
- Publication number
- CN101127389B CN101127389B CN2006100621587A CN200610062158A CN101127389B CN 101127389 B CN101127389 B CN 101127389B CN 2006100621587 A CN2006100621587 A CN 2006100621587A CN 200610062158 A CN200610062158 A CN 200610062158A CN 101127389 B CN101127389 B CN 101127389B
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- Prior art keywords
- electric core
- core body
- protective sleeve
- sleeve
- face
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- 229910001416 lithium ion Inorganic materials 0.000 title claims abstract description 27
- 238000000034 method Methods 0.000 title claims abstract description 21
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 title claims description 26
- 230000001681 protective effect Effects 0.000 claims abstract description 58
- 238000004519 manufacturing process Methods 0.000 claims abstract description 12
- 238000012856 packing Methods 0.000 claims description 7
- 230000015572 biosynthetic process Effects 0.000 claims description 6
- 230000000712 assembly Effects 0.000 description 6
- 238000000429 assembly Methods 0.000 description 6
- 239000003792 electrolyte Substances 0.000 description 4
- 239000012467 final product Substances 0.000 description 4
- 239000002390 adhesive tape Substances 0.000 description 3
- 230000005611 electricity Effects 0.000 description 3
- 238000002360 preparation method Methods 0.000 description 3
- 125000006850 spacer group Chemical group 0.000 description 3
- 239000011149 active material Substances 0.000 description 2
- 230000003321 amplification Effects 0.000 description 2
- 230000004888 barrier function Effects 0.000 description 2
- 239000002360 explosive Substances 0.000 description 2
- 150000002500 ions Chemical class 0.000 description 2
- 239000011159 matrix material Substances 0.000 description 2
- 238000003199 nucleic acid amplification method Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 230000005012 migration Effects 0.000 description 1
- 238000013508 migration Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
Images
Classifications
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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
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- Secondary Cells (AREA)
- Sealing Battery Cases Or Jackets (AREA)
Abstract
The utility model discloses a cylindrical lithium-ion cell core, comprising a cylindrical battery core body and a protecting sleeve; wherein, parts of the cylindrical surface of the cylindrical battery core body and the crossing line where the cylindrical surface of the cylindrical battery core body and the end face of the cylindrical battery core body cross together are sleeved in the protective sleeve. The utility model also discloses a battery which is made by adopting the battery core and the method of making the battery. The method is that the step of sleeving the protective sleeve to the battery core is before the step of putting the battery core into the cylinder, and the step of sleeving the protective sleeve to the battery core is at least that parts of the cylindrical surface of the cylindrical battery core body and the crossing line where the cylindrical surface of the cylindrical battery core body and the section of the cylindrical battery core body cross together are sleeved in the protective sleeve so that the battery core can not be damaged during the assembly. The utility model solves the technical problems that the battery core body is difficult to assemble, the battery core body is damaged or destroyed due to the assembly during the process of the traditional battery production.
Description
Technical field
The present invention relates to column lithium ion electric core and battery and preparation method thereof.
Background technology
Usually, column lithium ion battery comprises: the electric core body that is wound up as the substantial cylindrical shape; Electricity core body is inserted in cylindrical tube wherein; Inject the electrolyte that cylindrical shell makes the ion migration; Be used for sealed cylinder and prevent the cap assemblies of electrolyte leakage; In order to prevent the security performance of internal short-circuit of battery, increase battery, the two ends of electric core body also are provided with two spacer rings that can insulate.Column lithium ion battery has the capacity of 2000～2600mAh usually and generally is installed in notebook, digital camera, video camera and the portable power tool that consumes a large amount of electric energy.Cylindrical ion battery structure like this is as shown in Figure 1: apply predetermined active material and form negative plate, positive plate on metallic matrix; On negative plate, positive plate, draw negative electrode lug, anode ear respectively; Positive plate, negative plate is stacked, and separate by barrier film between the positive plate, negative plate, again with shaft-like winding axle with the roughly cylindrical electric core 1 ' of stacked positive plate, negative plate and membrane coil coiled, and electric core 1 ' is fixed with fixed band 2 '; With spacer ring 3 ', electric core 1 ', the spacer ring 4 ' cylindrical shell 5 ' of packing into, and negative electrode lug 6 ', anode ear 7 ' be electrically connected cylindrical shell 5 ', cap assemblies 8 ' respectively, in cylindrical shell 5 ', add electrolyte at last, and with cap assemblies 8 ' with cylindrical shell 5 ' sealing formation battery.
In the manufacture process of above-mentioned battery; because electric core body diameter is slightly less than cylinder internal diameter, when electric core body was packed cylindrical shell into, cylindrical shell was through regular meeting's scratch electricity core body; the easier damage of outermost layer of the end of especially electric core body and close end causes internal short-circuit of battery or potential safety hazard.For this reason, the technical staff adopts in the end even the whole face of cylinder of battery component is protected with adhesive tape sticking, though this method has played protective effect to electric core body.But also brought simultaneously new problem: 1) at first, when adopting this method, require tape width will be higher than the height of electric core body, this just certainly will cause the assembling difficulty between cap assemblies and the cylindrical shell; 2) because adhesive tape self has viscosity, cause bubble or fold when sticking on outermost layer often, cause electric core body diameter to become big, to send a telegraph core body difficulty when packing cylindrical shell into.
Summary of the invention
The purpose of this invention is to provide the good column lithium ion electric core of a kind of security performance, battery and preparation method thereof, with solve electric core assembling difficulty in the conventional batteries manufacture process, and assembling process in easily cause the technical problem that electric core is scrapped, damaged.
Realize the technical scheme of above-mentioned purpose:
A kind of column lithium ion electric core; comprise columniform electric core body and protective sleeve, described protective sleeve to the crest line of the end face intersection of the face of cylinder of the part face of cylinder of the cylindrical electric core body of major general and cylindrical electric core body and a cylindrical electric core body is socketed in the protective sleeve.
The end face of the protective sleeve of described socket crest line has an opening, and the diameter of described opening is less than the diameter of electric core body end face, the protection portion that makes this end face of electric core body have an annular.
Described protective sleeve is a thermal shrinkable sleeve, and the mode by pyrocondensation is socketed on the electric core body, and the opening of thermal shrinkable sleeve shrinks the back at the end face of electric core body and forms protection portion.
Described protective sleeve is a resilient sleeve, and resilient sleeve becomes its internal diameter by tension force and is enclosed within on the electric core body greatly.
A kind of column lithium ion battery comprises columniform electric core and protective sleeve, and described protective sleeve to the crest line of the end face intersection of the face of cylinder of the part face of cylinder of the cylindrical electric core of major general and cylindrical electric core and a cylindrical electric core is socketed in the protective sleeve.
The end face of the protective sleeve of described socket crest line has an opening, and the diameter of described opening is less than the diameter of electric core end face, the protection portion that makes this end face of electric core have an annular.
Described protective sleeve is a thermal shrinkable sleeve, and the mode by pyrocondensation is socketed on the electric core, and the opening of thermal shrinkable sleeve shrinks the back at the end face of electric core body and forms protection portion.
Described protective sleeve is a resilient sleeve, and resilient sleeve becomes its internal diameter by tension force and is enclosed within on the electric core body greatly.
A kind of manufacture method of column lithium ion battery; the step that comprises the electric core of in cylindrical shell, packing into; before the step of the electric core of in cylindrical shell, packing into; also comprise the step that electric core retainer plate is connect protective sleeve; the described step that electric core retainer plate is connect protective sleeve is that the crest line with the end face intersection of the face of cylinder of the part face of cylinder of cylindrical electric core and cylindrical electric core and a cylindrical electric core body is socketed in the protective sleeve at least, to prevent the damage of assembling process to electric core.
Further, the two ends tool opening of protective sleeve, and make two openings of protective sleeve shrink back formation protection portion at two end faces up and down of electric core.
Further, the two ends tool opening of protective sleeve makes an opening of protective sleeve shrink back formation protection portion at the end face of electric core, and another opening sleeve that makes protective sleeve is on the face of cylinder of electric core.
Further, described protective sleeve is thermal shrinkable sleeve or resilient sleeve, and resilient sleeve becomes its internal diameter by tension force and is enclosed within on the electric core body greatly, and thermal shrinkable sleeve tightly is enclosed within after toasting on the electric core, and the initial shrinkage temperature of thermal shrinkable sleeve is 50～150 ℃; Further the initial shrinkage temperature of thermal shrinkable sleeve is 65～85 ℃.
Adopt technique scheme; beneficial technical effects of the present invention is: 1) by protective sleeve is set; crest line to the end face intersection of the face of cylinder of the face of cylinder of cylindrical electric core and cylindrical electric core and cylindrical electric core is protected, and has solved scratch electricity core in the assembling process and causes internal short-circuit of battery or potential safety hazard.The potential safety hazard that has caused because of cover plate assembling difficulty when simultaneously, also having solved adhesive tape sticking and protect electric core.2) protective sleeve adopts thermal shrinkable sleeve or resilient sleeve, and is simple in structure, convenient and swift.Particularly adopt thermal shrinkable sleeve, maximum temperature that the initial shrinkage temperature of thermal shrinkable sleeve can be born according to electric core septation and battery self temperature and preferred during by battery discharge.
Description of drawings
Fig. 1 is existing battery structure figure;
Fig. 2 is the structure explosive view of a kind of column lithium ion battery of the present invention;
Fig. 3 (a) is the amplification stereogram of electric core among Fig. 2;
Fig. 3 (b) is the A-A cut away view of Fig. 3 (a);
Fig. 4 is the assembling schematic diagram of electric core and thermal shrinkable sleeve among Fig. 1.
Fig. 5 is the structure explosive view of the another kind of column lithium ion battery of the present invention;
Fig. 6 (a) is the amplification stereogram of electric core among Fig. 5;
Fig. 6 (b) is the B-B cut away view of Fig. 6 (a);
Embodiment
As required, protective sleeve 9 can be resilient sleeve or thermal shrinkable sleeve.
The manufacture method of above-mentioned column lithium ion battery:
Before the electric core 1 of in cylindrical shell 5, packing into; earlier the ostiolate protective sleeve 9 in two ends is socketed on the cylindrical electric core 1; the crest line of the intersection of both ends of the surface up and down of the face of cylinder of the face of cylinder of cylindrical electric core 1 and cylindrical electric core 1 and cylindrical electric core 1 is socketed in the protective sleeve; make two openings of protective sleeve 9 shrink formation protection portion 11, to prevent the damage of assembling process to electric core at two end faces up and down of electric core 1.
If adopt resilient sleeve, resilient sleeve makes its internal diameter become to be enclosed within on the electric core body greatly by tension force and gets final product.
If adopt thermal shrinkable sleeve; selecting initial shrinkage temperature is that 50～150 ℃ caliber is greater than the thermal shrinkable sleeve of electric core 1 diameter; earlier thermal shrinkable sleeve is enclosed within on the electric core 1, tightly is enclosed within on the electric core after the baking then, make two openings of thermal shrinkable sleeve shrink formation protection portion 11 simultaneously at two end faces up and down of electric core 1.As: adopting initial shrinkage temperature is 50 ℃ thermal shrinkable sleeve, with the electric core 1 that puts thermal shrinkable sleeve 70 ℃ down baking got final product in 3 minutes.Adopting initial shrinkage temperature is 150 ℃ thermal shrinkable sleeve, with the electric core 1 that puts thermal shrinkable sleeve 70 ℃ down 3 seconds kinds of baking get final product.Adopting initial shrinkage temperature is 100 ℃ of thermal shrinkable sleeves, and stoving time is to get final product for 20 seconds.
Embodiment 2; another kind of column lithium ion battery; shown in Fig. 5 and Fig. 6 (a) and (b); the present embodiment difference from Example 1 is: an opening sleeve of thermal shrinkable sleeve 9 is located on the face of cylinder 12 of electric core 1; another opening sleeve is located to draw on the lower surface of electric core 1 and forms protection portion 11; the crest line that the lower surface 12 of the face of cylinder, lower end of electric core 1 and electric core 1 is intersected is enclosed within the thermal shrinkable sleeve 9, and other structure and manufacture method are with embodiment 1.
Claims (12)
1. column lithium ion electric core; comprise columniform electric core body; it is characterized in that: also comprise protective sleeve; described protective sleeve is thermal shrinkable sleeve or resilient sleeve, and described protective sleeve to the crest line of an end face intersection of the face of cylinder of the part face of cylinder of the cylindrical electric core body of major general and cylindrical electric core body and cylindrical electric core body is socketed in the protective sleeve.
2. column lithium ion electric core as claimed in claim 1; it is characterized in that: the end face of the protective sleeve of described socket crest line has an opening; the diameter of described opening is less than the diameter of electric core body end face, the protection portion that makes this end face of electric core body have an annular.
3. column lithium ion electric core as claimed in claim 1 or 2 is characterized in that: described protective sleeve is a thermal shrinkable sleeve, and the mode by pyrocondensation is socketed on the electric core body, and the opening of thermal shrinkable sleeve shrinks the back at the end face of electric core body and forms protection portion.
4. column lithium ion electric core as claimed in claim 1 or 2 is characterized in that: described protective sleeve is a resilient sleeve, and resilient sleeve becomes its internal diameter by tension force and is enclosed within on the electric core body greatly.
5. column lithium ion battery; comprise columniform electric core body; it is characterized in that: also comprise protective sleeve; described protective sleeve is thermal shrinkable sleeve or resilient sleeve, and described protective sleeve to the crest line of an end face intersection of the face of cylinder of the part face of cylinder of the cylindrical electric core body of major general and cylindrical electric core body and cylindrical electric core body is socketed in the protective sleeve.
6. column lithium ion battery as claimed in claim 5; it is characterized in that: the end face of the protective sleeve of described socket crest line has an opening; the diameter of described opening is less than the diameter of electric core body end face, the protection portion that makes this end face of electric core body have an annular.
7. as claim 5 or 6 described column lithium ion batteries, it is characterized in that: described protective sleeve is a thermal shrinkable sleeve, and the mode by pyrocondensation is socketed on the electric core body, and the opening of thermal shrinkable sleeve shrinks the back at the end face of electric core body and forms protection portion.
8. the manufacture method of a column lithium ion battery; the step that comprises the cylindrical electric core body of in cylindrical shell, packing into; it is characterized in that: before the step of cylindrical electric core body of in cylindrical shell, packing into; also comprise step to cylindrical electric core body socket protective sleeve; described step to cylindrical electric core body socket protective sleeve is that the crest line with an end face intersection of the face of cylinder of the part face of cylinder of cylindrical electric core body and cylindrical electric core body and cylindrical electric core body is socketed in the protective sleeve at least; to prevent the damage of assembling process to electric core body, described protective sleeve is thermal shrinkable sleeve or resilient sleeve.
9. as the manufacture method of column lithium ion battery as described in the claim 8, it is characterized in that: the two ends tool opening of protective sleeve, and two openings that make protective sleeve shrink the back at two end faces up and down of electric core body and form protection portions.
10. as the manufacture method of column lithium ion battery as described in the claim 8; it is characterized in that: the two ends tool opening of protective sleeve; make an opening of protective sleeve shrink back formation protection portion at the end face of electric core body, another opening sleeve that makes protective sleeve is on the face of cylinder of electric core body.
11. as claim 8-10 arbitrarily in the manufacture method of a described column lithium ion battery, it is characterized in that: described protective sleeve is a thermal shrinkable sleeve, thermal shrinkable sleeve tightly is enclosed within after toasting on the electric core body.
12. the manufacture method of column lithium ion battery as claimed in claim 11 is characterized in that: the initial shrinkage temperature of described thermal shrinkable sleeve is 50～150 ℃.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2006100621587A CN101127389B (en) | 2006-08-16 | 2006-08-16 | A column lithium ion electric core, battery and its making method |
| HK08109128.8A HK1113863A1 (en) | 2006-08-16 | 2008-08-18 | A cylindrical lithium cell, batteries with the cell and manufacturing method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2006100621587A CN101127389B (en) | 2006-08-16 | 2006-08-16 | A column lithium ion electric core, battery and its making method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101127389A CN101127389A (en) | 2008-02-20 |
| CN101127389B true CN101127389B (en) | 2011-12-07 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2006100621587A Active CN101127389B (en) | 2006-08-16 | 2006-08-16 | A column lithium ion electric core, battery and its making method |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN101127389B (en) |
| HK (1) | HK1113863A1 (en) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101645520A (en) * | 2008-08-08 | 2010-02-10 | 深圳市比克电池有限公司 | Battery assembly method |
| DE102010041020A1 (en) * | 2010-09-20 | 2012-03-22 | Robert Bosch Gmbh | battery unit |
| KR101423688B1 (en) * | 2010-11-04 | 2014-07-25 | 주식회사 엘지화학 | Cable-Type Secondary Battery And Preparation Method thereof |
| CN105375067B (en) * | 2014-08-18 | 2019-05-07 | 中国电子科技集团公司第十八研究所 | The conformal process of cylindrical lithium ion battery cell assembly |
| CN105070952B (en) * | 2015-07-30 | 2018-07-06 | 南通宁远自动化科技有限公司 | A kind of five axis lithium battery winders |
| CN111009693B (en) * | 2019-11-19 | 2021-09-17 | 南京中比新能源科技有限公司 | Internal fine adjustment cylindrical battery cell assembly process |
| CN113454833A (en) * | 2020-09-08 | 2021-09-28 | 宁德新能源科技有限公司 | Electrochemical device and electronic device |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0867954A1 (en) * | 1997-03-24 | 1998-09-30 | Alcatel | Electrochemical generator with a corrosion-protected insulated casting |
-
2006
- 2006-08-16 CN CN2006100621587A patent/CN101127389B/en active Active
-
2008
- 2008-08-18 HK HK08109128.8A patent/HK1113863A1/en unknown
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0867954A1 (en) * | 1997-03-24 | 1998-09-30 | Alcatel | Electrochemical generator with a corrosion-protected insulated casting |
Also Published As
| Publication number | Publication date |
|---|---|
| HK1113863A1 (en) | 2008-10-17 |
| CN101127389A (en) | 2008-02-20 |
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Effective date of registration: 20160824 Address after: Kwai Chung street Beek Industrial Park in Longgang District of Shenzhen City, Guangdong Province, No. 6 building 518000 Patentee after: SHENZHEN BAK POWER BATTERY Co.,Ltd. Address before: Kwai Chung street Beek Industrial Park in Longgang District of Shenzhen City, Guangdong province 518119 Patentee before: SHENZHEN BAK BATTERY Co.,Ltd. |
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