CN105702889A - Forming method of battery top cap - Google Patents
Forming method of battery top cap Download PDFInfo
- Publication number
- CN105702889A CN105702889A CN201610216417.0A CN201610216417A CN105702889A CN 105702889 A CN105702889 A CN 105702889A CN 201610216417 A CN201610216417 A CN 201610216417A CN 105702889 A CN105702889 A CN 105702889A
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- China
- Prior art keywords
- cover plate
- pole
- hole
- plastic
- forming method
- 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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Classifications
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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
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/10—Primary casings, jackets or wrappings of a single cell or a single battery
- H01M50/147—Lids or covers
- H01M50/148—Lids or covers characterised by their shape
- H01M50/154—Lid or cover comprising an axial bore for receiving a central current collector
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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
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/10—Primary casings, jackets or wrappings of a single cell or a single battery
- H01M50/147—Lids or covers
- H01M50/148—Lids or covers characterised by their shape
- H01M50/15—Lids or covers characterised by their shape for prismatic or rectangular cells
-
- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Sealing Battery Cases Or Jackets (AREA)
Abstract
The invention relates to the technical field of batteries and discloses a forming method of a battery top cap. The forming method comprises the following steps: 1) providing a cover plate and two post terminals: 2) enabling the post body of one post terminal to penetrate through the cover plate, putting the post terminal and the cover plate in a first mould, injecting conductive plastic into the first mould, wherein the conductive plastic forms a conductive plastic ring and the combination of the post terminal and the cover plate forms a single-terminal semiproduct; enabling the post body of the other post terminal to penetrate through the cover plate, putting the combination of the other post terminal and the single-terminal semiproduct in a second mould, injecting insulating plastic into the second mould, wherein the insulating plastic forms an insulating plastic ring and the combination of the post terminal and the single-terminal semiproduct forms a dual-terminal semiproduct; and 3) putting the dual-terminal semiproduct in a third mould, injecting plastic in the third mould, and respectively forming two plastic plates under the cover plate. Since the battery top cap is formed in a way of injecting plastic in the moulds, parts of the battery top cap can be reduced, the forming cost is low, the structure is simple and batch production can be realized easily.
Description
Technical field
The present invention relates to the technical field of battery, particularly relate to the forming method of battery cap。
Background technology
At present, along with the miniaturization day by day of electronic product, lighting and Portable belt, such as video camera, notebook and mobile phone etc., the power supply that drives of these electronic products also develops towards the direction of high power capacity, high security and lighting, battery, with good characteristics such as its high power capacity, is used in electronic product widely；It addition, battery is also widely used in new-energy automobile。
Battery includes housing, battery cap and battery core etc., wherein battery core is placed in the inside of housing, the upper end of housing has upper end open, battery cap is then enclosed in the opening of the upper end of housing, again through forming the pole on battery cap, then battery can be electrically connected with outside electronic component, it is achieved power supply。
In prior art, battery cap includes multiple element such as cover plate and pole, in forming process, is generally adopted spring type structure and coordinates, forming battery cap, so, then the part that can there is battery cap is too much, not easily realize automatic mass, and fraction defective is also higher；Now, also having the mode adopting riveted type structure to carry out assemble top cover, so, then cost is high, and automatic mass is also more difficult, it is difficult to meet the demand of the new forms of energy industry day by day expanded。
Summary of the invention
It is an object of the invention to provide the forming method of battery cap, it is intended to solve in prior art, the problem that forming method existence is difficult to automated production, cost is high and fraction defective is high of battery cap。
The present invention is achieved in that the forming method of battery cap, including following forming step:
1), providing cover plate and two poles, be provided with two and install through hole in described cover plate, described pole includes base plate and cylinder, and described cylinder is connected on described base plate；
2), by one of the cylinder described cover plate of traverse of a described pole, through hole is installed, described cylinder extends to the top of described cover plate, extension in formation, the base plate of described pole is placed in the lower section of described cover plate, this pole and described cover plate are placed in the first mould, and in the first mould injection molded conductive plastic cement, described conductive plastic is wrapped in the periphery of described cylinder, the assembly forming the conductive plastic circle being connected to described cover plate upper surface, described pole and cover plate forms one pole post semi-finished product；
By another installation through hole of the cylinder of another the described pole described cover plate of traverse, the cylinder of this pole extends to the top of described cover plate, extension in formation, the base plate of described pole is placed in the lower section of described cover plate, another described pole and the half-finished assembly of one pole post are placed in the second mould, and in a second mold injection moulding insulation plastic cement, insulation plastic cement is wrapped in the periphery of described cylinder, forming the insulated plastic cushion rubber being connected to described cover plate upper surface, another described pole forms dipole column semi-finished product with the half-finished assembly of one pole post；
3), described dipole column semi-finished product are placed in the 3rd mould, by injection moulding plastic in the 3rd mould, at the lower section of described cover plate difference two plastic cement plates of molding, two described plastic cement plate corresponding base plates being set in two poles respectively。
Further, described cover plate is provided with multiple first positioning through hole, multiple described first positioning through hole are looped around described in one to install the periphery of through hole and arrange, described conductive plastic injects in described first positioning through hole, forms the first locating dowel being embedded in described first positioning through hole。
Further, the periphery of described conductive plastic circle is formed with conduction lug, and described conduction lug is connected on described cover plate。
Further, described cover plate is provided with multiple second positioning through hole, multiple described second positioning through hole are looped around the periphery of another described installation through hole and arrange, described insulation plastic cement injects in described second positioning through hole, forms the second locating dowel being embedded in described second positioning through hole。
Further, the periphery of described insulated plastic cushion rubber is formed with insulation lug, and described insulation lug is connected on described cover plate。
Further, the plastic cement plate after injection mo(u)lding is connected to the lower surface of described cover plate。
Further, the pole being connected with described conduction cushion rubber is positive polarity pole, and the pole being connected with described insulation cushion rubber is negative polarity pole。
Further, in described step 2) in, the cylinder of two described poles correspondence respectively is located in two described installation through holes, and adopts sealing ring will to carry out encapsulation process between described pole and installation through hole。
Further, in step 2) in, the periphery of described cylinder is provided with annular groove, and the conductive plastic circle that described conductive plastic is formed is embedded in described annular groove。
Further, in step 2) in, the periphery of described cylinder is provided with annular groove, and the insulated plastic cushion rubber that described insulation plastic cement is formed is embedded in described annular groove。
Compared with prior art, the forming method of battery cap provided by the invention, method by injection moulding in a mold, difference on the cover board shaped conductive plastic tube, insulated plastic cushion rubber and two plastic cement plates, conductive plastic circle makes to turn between one of them pole and cover plate, insulated plastic cushion rubber makes to insulate between another one pole and cover plate, and two plastic cement plates are formed in the lower section of cover plate, it is achieved the stationary positioned to two poles；By the method forming battery top cover of injection moulding, greatly reduce the part of battery cap, and molding cost is low, it is not necessary to carry out conducting electricity or positioning with pottery etc., simple in construction, it is easy to realize producing in enormous quantities。
Accompanying drawing explanation
Fig. 1 is the schematic perspective view of the battery cap that the embodiment of the present invention provides；
Fig. 2 is the exploded perspective schematic diagram of the battery cap that the embodiment of the present invention provides；
Fig. 3 is the cut-away illustration of the battery cap that the embodiment of the present invention provides；
Fig. 4 is the enlarged diagram at the A place in Fig. 3。
Detailed description of the invention
In order to make the purpose of the present invention, technical scheme and advantage clearly understand, below in conjunction with drawings and Examples, the present invention is further elaborated。Should be appreciated that specific embodiment described herein is only in order to explain the present invention, is not intended to limit the present invention。
Below in conjunction with specific embodiment, the realization of the present invention is described in detail。
With reference to shown in Fig. 1～4, for a preferred embodiment provided by the invention。
The forming method of the battery cap that the present embodiment provides, for the battery cap of the various types of battery of molding, it is not limited to the battery cap of lithium battery, such as the LiFePO4 industry of main flow, can also is that (battery cap, as rechargeable battery etc. for other various batteries。
The forming method of battery cap, including following forming step:
1), providing cover plate 11 and two poles, wherein, be provided with two and install through hole 111 in cover plate 11, pole includes base plate 161 and cylinder 162, and cylinder 162 is connected on base plate 161；
2), installing through hole 111 by one of the cylinder 162 traverse cover plate 11 of one of them pole, wherein, cylinder 162 extends to the top of cover plate 11, is formed with extension, and base plate 161 forms the lower section at cover plate 11；The assembly of one pole Yu cover plate 11 is placed in the first mould, by injection molded conductive plastic cement in the first mould, conductive plastic is wrapped in the periphery, upper extension of pole, form conductive plastic circle 121, conductive plastic circle 121 is connected to the upper surface of cover plate 11, so, forms one pole post semi-finished product between single pole and cover plate 11, one pole post semi-finished product utilize the electric action of conductive plastic so that realize conducting between pole with cover plate 11 and be connected；By another installation through hole 111 of the cylinder 162 of another pole traverse cover plate 11, wherein, this cylinder 162 extends to the top of cover plate 11, it is formed with extension, base plate 161 forms the lower section at cover plate 11, half-finished to another pole and one pole post assembly is placed in a second mold, by the insulation plastic cement of injection moulding in a second mold, insulation plastic cement is wrapped in the periphery of the upper extension of pole, form insulated plastic cushion rubber 141, insulated plastic cushion rubber 141 is connected to the upper surface of cover plate 11, thus, cover plate 11 and two poles form dipole column semi-finished product；
3), the dipole column semi-finished product of above-mentioned formation are placed in the 3rd mould, by at the 3rd mold injection plastic cement, at the lower section of cover plate 11 difference two plastic cement plates 17 of molding, the two plastic cement plate 17 is the corresponding base plate 161 being set in two poles respectively, forms the overall structure of battery cap。
The forming method of the battery cap of above-mentioned offer, method by injection moulding in a mold, shaped conductive plastic tube 121, insulated plastic cushion rubber 141 and two plastic cement plates 17 on cover plate 11 respectively, conductive plastic circle 121 makes to turn between one of them pole and cover plate 11, insulated plastic cushion rubber 141 makes to insulate between another one pole and cover plate 11, two plastic cement plates 17 are formed in the lower section of cover plate 11, it is achieved the stationary positioned to two poles；By the method forming battery top cover of injection moulding, greatly reduce the part of battery cap, and molding cost is low, it is not necessary to carry out conducting electricity or positioning with pottery etc., simple in construction, it is easy to realize producing in enormous quantities。
In the present embodiment, in above-mentioned steps 2) in, the cylinder 162 of two poles is located in two and installs in through hole 111, and adopt sealing ring 15 will to carry out encapsulation process between pole and installation through hole 111, so, when battery cap is when using, it is sealed on the upper end open of housing, it is to avoid the phenomenon revealed occurs。
The periphery of the cylinder 162 of pole is formed with annular groove 163, in step 2) in after injection moulding completes, conductive plastic and insulation plastic cement are correspondingly embedded in respectively in the annular groove 163 of two cylinders 162, so, make stable connection between conductive plastic circle 121 and the pole formed, formation back-off designs, it is easier to control resistance value, conductive plastic circle 121 will not come off from pole, and, it is greatly increased the contact area between conductive plastic circle 121 and pole, simultaneously, make stable connection between insulated plastic cushion rubber 141 and the pole formed, formation back-off designs, it is easier to control resistance value, insulated plastic cushion rubber 141 will not come off from pole, and, it is greatly increased the contact area between insulated plastic cushion rubber 141 and pole。
In the present embodiment, in above-mentioned steps 2) in, cover plate 11 is provided with multiple first positioning through hole 112, the plurality of first positioning through hole 112 is looped around the periphery of an installation through hole 111 and arranges, when injection molded conductive plastic cement on cover plate 11, conductive plastic is also injected simultaneously into the first positioning through hole 112, form the first locating dowel being embedded in the first positioning through hole 112, so, after conductive plastic injection formed, directly utilize the first locating dowel, then can will form location between conductive plastic circle 121 and cover plate 11, without then arranging other any location potsherds etc. between conductive plastic circle 121 and cover plate 11, greatly reduce construction part, and saving cost。
Additionally, in above-mentioned steps 2) in, cover plate 11 is provided with multiple second positioning through hole 113, the plurality of second positioning through hole 113 is looped around another periphery installing through hole 111 and arranges, when injection moulding insulation plastic cement on cover plate 11, insulation plastic cement is also injected simultaneously into the second positioning through hole 113, form the second locating dowel, so, after conductive plastic injection formed, directly utilize the second locating dowel, then can will form location between insulated plastic cushion rubber 141 and cover plate 11, without then arranging other any location potsherds etc. between insulated plastic cushion rubber 141 and cover plate 11, greatly reduce construction part, and saving cost。
In the present embodiment, in above-mentioned steps 2) in, the periphery of the conductive plastic circle 121 after injection mo(u)lding is formed with conduction lug 122, conduction lug 122 is connected on cover plate 11, as such, it is possible to make electric conductivity between conductive plastic circle 121 and cover plate 11, and it is easy to the location of conductive plastic circle 121。
It is formed with two above-mentioned conduction lugs 122 in the periphery of conductive plastic circle 121, in the first mould of injection mo(u)lding, it is contemplated that the needs of charging and discharging, forms conduction lug 122 in the periphery of conductive plastic circle 121, it is possible to be greatly improved the yield of product。
In the present embodiment, in above-mentioned steps 2) in, the periphery of the insulated plastic cushion rubber 141 after injection mo(u)lding is formed with insulation lug 142, and insulation lug 142 is connected on cover plate 11, as such, it is possible to make the location between insulated plastic cushion rubber 141 and cover plate 11。
It is formed with two above-mentioned insulation lugs 142 in the periphery of insulated plastic cushion rubber 141, in the second mould of injection mo(u)lding, it is contemplated that the needs of charging and discharging, forms insulation lug 142 in the periphery of insulated plastic cushion rubber 141, it is possible to be greatly improved the yield of product。
In above-mentioned steps 3) in, plastic cement plate 17 after injection mo(u)lding is connected to the lower surface of cover plate 11, so, it is also possible that it is firm fixing between plastic cement plate 17 and cover plate 11, also firm base plate 161 periphery being set in pole of plastic cement plate 17 is made so that coordinating between pole with cover plate 11 is firm。
In the present embodiment, the pole being connected with conductive plastic circle 121 is positive polarity pole, and the pole being connected with insulated plastic cushion rubber 141 is negative polarity pole, certainly, according to the actual requirements, the polarity of two poles can also replacing etc. mutually, specifically determine by being actually needed。
The foregoing is only presently preferred embodiments of the present invention, not in order to limit the present invention, all any amendment, equivalent replacement and improvement etc. made within the spirit and principles in the present invention, should be included within protection scope of the present invention。
Claims (10)
1. the forming method of battery cap, it is characterised in that include following forming step:
1), providing cover plate and two poles, be provided with two and install through hole in described cover plate, described pole includes base plate and cylinder, and described cylinder is connected on described base plate；
2), by one of the cylinder described cover plate of traverse of a described pole, through hole is installed, described cylinder extends to the top of described cover plate, extension in formation, the base plate of described pole is placed in the lower section of described cover plate, this pole and described cover plate are placed in the first mould, and in the first mould injection molded conductive plastic cement, described conductive plastic is wrapped in the periphery of described cylinder, the assembly forming the conductive plastic circle being connected to described cover plate upper surface, described pole and cover plate forms one pole post semi-finished product；
By another installation through hole of the cylinder of another the described pole described cover plate of traverse, the cylinder of this pole extends to the top of described cover plate, extension in formation, the base plate of described pole is placed in the lower section of described cover plate, another described pole and the half-finished assembly of one pole post are placed in the second mould, and in a second mold injection moulding insulation plastic cement, insulation plastic cement is wrapped in the periphery of described cylinder, forming the insulated plastic cushion rubber being connected to described cover plate upper surface, another described pole forms dipole column semi-finished product with the half-finished assembly of one pole post；
3), described dipole column semi-finished product are placed in the 3rd mould, by injection moulding plastic in the 3rd mould, at the lower section of described cover plate difference two plastic cement plates of molding, two described plastic cement plate corresponding base plates being set in two poles respectively。
2. the forming method of battery cap as claimed in claim 1, it is characterized in that, described cover plate is provided with multiple first positioning through hole, multiple described first positioning through hole are looped around described in one to install the periphery of through hole and arrange, described conductive plastic injects in described first positioning through hole, forms the first locating dowel being embedded in described first positioning through hole。
3. the forming method of battery cap as claimed in claim 1, it is characterised in that the periphery of described conductive plastic circle is formed with conduction lug, and described conduction lug is connected on described cover plate。
4. the forming method of the battery cap as described in any one of claims 1 to 3, it is characterized in that, described cover plate is provided with multiple second positioning through hole, multiple described second positioning through hole are looped around the periphery of another described installation through hole and arrange, described insulation plastic cement injects in described second positioning through hole, forms the second locating dowel being embedded in described second positioning through hole。
5. the forming method of the battery cap as described in any one of claims 1 to 3, it is characterised in that the periphery of described insulated plastic cushion rubber is formed with insulation lug, and described insulation lug is connected on described cover plate。
6. the forming method of the battery cap as described in any one of claims 1 to 3, it is characterised in that the plastic cement plate after injection mo(u)lding is connected to the lower surface of described cover plate。
7. the forming method of the battery cap as described in any one of claims 1 to 3, it is characterised in that the pole being connected with described conduction cushion rubber is positive polarity pole, the pole being connected with described insulation cushion rubber is negative polarity pole。
8. the forming method of the battery cap as described in any one of claims 1 to 3, it is characterized in that, in described step 2) in, the cylinder of two described poles correspondence respectively is located in two described installation through holes, and adopts sealing ring will to carry out encapsulation process between described pole and installation through hole。
9. the forming method of the battery cap as described in any one of claims 1 to 3, it is characterised in that in step 2) in, the periphery of described cylinder is provided with annular groove, and the conductive plastic circle that described conductive plastic is formed is embedded in described annular groove。
10. the forming method of the battery cap as described in any one of claims 1 to 3, it is characterised in that in step 2) in, the periphery of described cylinder is provided with annular groove, and the insulated plastic cushion rubber that described insulation plastic cement is formed is embedded in described annular groove。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610216417.0A CN105702889B (en) | 2016-04-08 | 2016-04-08 | The forming method of battery cap |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610216417.0A CN105702889B (en) | 2016-04-08 | 2016-04-08 | The forming method of battery cap |
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| Publication Number | Publication Date |
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| CN105702889A true CN105702889A (en) | 2016-06-22 |
| CN105702889B CN105702889B (en) | 2018-05-08 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201610216417.0A Active CN105702889B (en) | 2016-04-08 | 2016-04-08 | The forming method of battery cap |
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| CN (1) | CN105702889B (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106356476A (en) * | 2016-10-25 | 2017-01-25 | 东野精机（昆山）有限公司 | Automatic assembly method for power battery cover plate |
| CN107452903A (en) * | 2017-08-16 | 2017-12-08 | 深圳市瑞德丰精密制造有限公司 | The battery cap and battery of single port |
| CN108172700A (en) * | 2017-12-15 | 2018-06-15 | 珠海微矩实业有限公司 | Button cell and preparation method thereof |
| WO2019227460A1 (en) * | 2018-06-01 | 2019-12-05 | 深圳市瑞德丰精密制造有限公司 | Surface welding-free top cover assembly process |
| CN113594596A (en) * | 2021-06-17 | 2021-11-02 | 济宁市海富电子科技有限公司 | Battery cover plate assembly, battery and assembly method of battery cover plate assembly |
| CN114976401A (en) * | 2017-08-30 | 2022-08-30 | 宁德时代新能源科技股份有限公司 | Secondary cell's top cap subassembly and secondary cell |
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| CN204333058U (en) * | 2015-01-22 | 2015-05-13 | 宁德新能源科技有限公司 | Electrokinetic cell and electrokinetic cell top cover |
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106356476A (en) * | 2016-10-25 | 2017-01-25 | 东野精机（昆山）有限公司 | Automatic assembly method for power battery cover plate |
| CN106356476B (en) * | 2016-10-25 | 2019-05-07 | 东野精机（昆山）有限公司 | A kind of automatic assemble method of cover plate of power battery |
| CN107452903A (en) * | 2017-08-16 | 2017-12-08 | 深圳市瑞德丰精密制造有限公司 | The battery cap and battery of single port |
| CN107452903B (en) * | 2017-08-16 | 2024-02-20 | 常州瑞德丰精密技术有限公司 | Single-port battery top cover and battery |
| CN114976401A (en) * | 2017-08-30 | 2022-08-30 | 宁德时代新能源科技股份有限公司 | Secondary cell's top cap subassembly and secondary cell |
| US11757123B2 (en) | 2017-08-30 | 2023-09-12 | Contemporary Amperex Technology Co., Limited | Cap assembly for a secondary battery and secondary battery |
| CN114976401B (en) * | 2017-08-30 | 2024-03-29 | 宁德时代新能源科技股份有限公司 | Top cap subassembly and secondary cell of secondary cell |
| CN108172700A (en) * | 2017-12-15 | 2018-06-15 | 珠海微矩实业有限公司 | Button cell and preparation method thereof |
| WO2019227460A1 (en) * | 2018-06-01 | 2019-12-05 | 深圳市瑞德丰精密制造有限公司 | Surface welding-free top cover assembly process |
| CN113594596A (en) * | 2021-06-17 | 2021-11-02 | 济宁市海富电子科技有限公司 | Battery cover plate assembly, battery and assembly method of battery cover plate assembly |
| CN113594596B (en) * | 2021-06-17 | 2023-09-15 | 徐州海富轻金属科技有限公司 | Battery cover plate assembly, battery and assembly method of battery cover plate assembly |
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|---|---|
| CN105702889B (en) | 2018-05-08 |
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Address after: 213200 Minghu Road, Jintan District, Changzhou City, Jiangsu Province, 399 Patentee after: Changzhou Redford Precision Technology Co., Ltd. Address before: 518000 Guangming New District, Shenzhen City, Guangdong Province Gongming Office, Dongkeng Community, No. 26 Dongfa Road, Building 5, First Floor B District, Second Floor B District Patentee before: SHENZHEN RED FAIRY PRECISION TECHNOLOGY CO., LTD. |