CN111952526A - Multi-contact conductive sheet for cylindrical battery series connection and method for manufacturing the same - Google Patents
Multi-contact conductive sheet for cylindrical battery series connection and method for manufacturing the same Download PDFInfo
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- CN111952526A CN111952526A CN201910408519.6A CN201910408519A CN111952526A CN 111952526 A CN111952526 A CN 111952526A CN 201910408519 A CN201910408519 A CN 201910408519A CN 111952526 A CN111952526 A CN 111952526A
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- 238000004519 manufacturing process Methods 0.000 title claims abstract description 30
- 238000000034 method Methods 0.000 title claims abstract description 17
- 229910052751 metal Inorganic materials 0.000 claims abstract description 7
- 239000002184 metal Substances 0.000 claims abstract description 7
- 238000005096 rolling process Methods 0.000 claims abstract description 5
- 238000003825 pressing Methods 0.000 claims abstract description 3
- 238000004080 punching Methods 0.000 claims description 18
- 238000005452 bending Methods 0.000 claims description 6
- 239000000463 material Substances 0.000 claims description 6
- 238000003698 laser cutting Methods 0.000 claims description 5
- 238000003672 processing method Methods 0.000 claims description 4
- 238000000137 annealing Methods 0.000 claims description 3
- 230000000750 progressive effect Effects 0.000 claims description 3
- 230000002035 prolonged effect Effects 0.000 claims description 3
- 230000009286 beneficial effect Effects 0.000 claims 1
- 238000010791 quenching Methods 0.000 claims 1
- 230000000171 quenching effect Effects 0.000 claims 1
- 239000000203 mixture Substances 0.000 abstract 1
- 238000003466 welding Methods 0.000 description 5
- 229910000831 Steel Inorganic materials 0.000 description 3
- 239000010959 steel Substances 0.000 description 3
- 229910000906 Bronze Inorganic materials 0.000 description 2
- 229910052790 beryllium Inorganic materials 0.000 description 2
- ATBAMAFKBVZNFJ-UHFFFAOYSA-N beryllium atom Chemical compound [Be] ATBAMAFKBVZNFJ-UHFFFAOYSA-N 0.000 description 2
- 239000010974 bronze Substances 0.000 description 2
- KUNSUQLRTQLHQQ-UHFFFAOYSA-N copper tin Chemical compound [Cu].[Sn] KUNSUQLRTQLHQQ-UHFFFAOYSA-N 0.000 description 2
- 239000000178 monomer Substances 0.000 description 2
- 238000000465 moulding Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000012634 fragment Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
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- Connection Of Batteries Or Terminals (AREA)
Abstract
The invention provides a cylindrical battery series connection multi-contact conducting strip which is formed by pressing a conductive metal sheet and consists of a circular tube spring and an end face conducting strip at the bottom, wherein the circular tube spring is axially provided with a plurality of inward-convex arc curved surfaces on the circumference, each arc curved surface is provided with a plurality of uniformly-arranged slots, and an inward-convex arc elastic sheet is formed between every two slots. And processing the mixture into a finished product of the multi-contact conducting strip by a rolling forming machine. The method has the advantages of simple process, high processing efficiency, high yield and the like, and greatly reduces the production cost of the multi-contact conducting plate.
Description
The technical field is as follows:
the invention relates to a method for connecting single batteries in series, in particular to a multi-contact conducting strip for connecting cylindrical batteries in series and a manufacturing method thereof.
Background art:
the rated voltage of the battery pack is realized by connecting a plurality of single batteries in series. The contact resistance of the series connection of the cells directly affects the technical performance of the battery pack, and the structural design and production efficiency of the series connection of the cells directly affect the production efficiency of the battery pack. The series connection mode of the current battery pack is generally realized by respectively welding the positive electrodes and the negative electrodes of two single batteries at the two ends of a conducting strip, a large number of welding spots directly influence the production efficiency of the battery pack, and the leakage accident of a battery steel shell caused by welding sometimes happens, even the battery pack is caused to be on fire or explode in use. The utility model discloses a cylindrical monomer battery series connection device is disclosed in the utility model patent "cylindrical monomer battery series connection device" of application CN201220312608.4, and battery box hat electrode need not weld, adopts the mode of axial shell fragment contact, and fundamentally has avoided because the emergence of the battery box hat weeping accident that the welding caused has improved the production efficiency of group battery. However, the above patent limits the number of the arc-shaped elastic pieces protruding inwards to a certain extent, and cannot achieve smaller battery contact resistance, and the above patent does not mention a manufacturing method of a cylindrical single battery series connection device, so that high-efficiency production according to a conventional process is difficult, and the popularization and application of the patent technology are limited.
The invention content is as follows:
the invention aims to solve the problems in the prior art and provide a multi-contact conducting strip for cylindrical batteries in series connection and a manufacturing method thereof, which can effectively reduce the contact resistance of the batteries in series connection and have high production efficiency and low manufacturing cost,
the technical scheme of the invention is as follows: the multi-contact conducting strip of the cylindrical battery series connection is formed by adopting a conducting metal thin plate in a pressing mode, the multi-contact conducting strip of the cylindrical battery series connection is composed of a circular ring-shaped pipe spring and a terminal surface conducting strip at the bottom of a circular ring, the terminal surface conducting strip and the circular ring-shaped pipe spring are of an integrated structure, the circular ring-shaped pipe spring is provided with a plurality of arc curved surfaces protruding inwards in the axial direction on the circumference, each arc curved surface is provided with a plurality of grooves, an arc-shaped elastic piece protruding inwards is formed between every two grooves, the size of the inner wall of the circular ring-shaped pipe spring is in clearance fit with the diameter of the battery, the arc-shaped elastic piece protruding inwards of the circular ring-shaped pipe spring is in interference fit with the diameter of the battery, the terminal surface conducting strip is a bottom plane connected. The concave platform of the end face conducting strip is welded with a convex electrode (usually a battery anode) of one battery, and an arc-shaped elastic sheet which is convex inwards on the inner wall of the circular tube spring radially clamps a shell electrode (usually a battery cathode) of the other battery, so that the two batteries are connected in series.
The circular ring-shaped tube spring is provided with an opening on the circumference.
The slotted hole of the circular ring-shaped tube spring can be parallel to the axis in the length direction, and also can form an angle with the axis, and the angle is between 0 and 30 degrees.
The end face conducting strip can be an integral circular plane or a circular plane formed by splicing a plurality of small planes.
The manufacturing method of the multi-contact conducting strip of the cylindrical battery series connection can adopt the punch forming of a multi-station progressive die: a first station: punching a guide nail hole; a second station: punching a slotted hole; a third station: punching a part of the outer hole; a fourth station: drawing an arc curved surface; a fifth station: stamping the shape of the end face conducting strip; a sixth station: the deep drawing end surface conducting strip is concave; a seventh station: bending the end face conducting plate; an eighth station: bending the curved surface of the tube spring part; a ninth station: and (5) forming and blanking a tube spring.
Preferably, the manufacturing method of the multi-contact conducting strip with the cylindrical batteries connected in series can also adopt a processing method of a laser cutting machine to complete the procedures of punching slot holes, blanking shapes and the like of the multi-contact conducting strip, and the multi-contact conducting strip is processed into a semi-finished material strip of the multi-contact conducting strip.
Preferably, the manufacturing method of the multi-contact conducting strip for the series connection of the cylindrical batteries can also adopt a processing method of a rolling forming machine to finish the procedures of forming and blanking a drawing arc curved surface, a bent end surface conducting strip and a tube spring of the multi-contact conducting strip, and the finished product of the multi-contact conducting strip can be processed.
Preferably, the metal sheet for manufacturing the multi-contact conducting strip connected in series with the cylindrical battery is in an annealing state, so that the elasticity of the metal sheet is eliminated, and the forming of the multi-contact conducting strip is facilitated; the multi-contact conducting strip is quenched after being processed and formed, so that the elasticity of the multi-contact conducting strip is improved, and the service life of the multi-contact conducting strip is prolonged.
Compared with the prior art, the multi-contact conducting strip for the series connection of the cylindrical batteries can improve the contact point, the contact area and the contact force of the conducting strip and the battery steel shell electrode by times, thereby effectively reducing the contact resistance of the series connection of the batteries, improving the charging and discharging efficiency of the batteries, prolonging the service life of the batteries and fundamentally avoiding the leakage accidents of the batteries caused by welding. The multi-contact conducting strip for the series connection of the cylindrical batteries and the manufacturing method thereof have the advantages of simple working procedures, high processing efficiency, high yield and the like, and greatly reduce the production cost of the conducting strip for the series connection of the batteries so as to adapt to the increasingly severe price competition situation of the battery pack industry at present.
Description of the drawings:
in order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without inventive exercise.
FIG. 1 is a front view of embodiment 1 of the present invention;
FIG. 2 is a plan view of embodiment 1 of the present invention;
FIG. 3 is an isometric view of example 1 of the practice of the invention;
fig. 4 is an axial side view of a cylindrical unit cell series connection of the present invention;
FIG. 5 is a flow chart of a molding process of example 1 of the present invention;
FIG. 6 is a flow chart of a molding process of example 2 of the present invention;
fig. 7 is a first station of stamping of example 1 of the invention: a plan view of a punching pilot nail hole;
fig. 8 is a second station of the stamping of example 1 of the present invention: punching a plane view of an odd number of slotted holes;
fig. 9 is a third station of the press according to example 1 of the present invention: punching a plane view of even number of slotted holes;
fig. 10 is a fourth station of stamping of example 1 of the present invention: a plan view of the stamped part of the exterior hole;
fig. 11 is a fifth station of the press according to embodiment 1 of the present invention: drawing a plane view of the middle arc curved surface;
fig. 12 is a sixth station of stamping of example 1 of the present invention: drawing a plane diagram of arc curved surfaces on two sides;
fig. 13 is a seventh station of stamping according to example 1 of the present invention: stamping a plan view of the shape of the end face conducting strip;
fig. 14 is an eighth stamping station of example 1 of the present invention: a plan view of a deep-drawn end face conducting strip concave platform;
fig. 15 is a ninth station of stamping of example 1 of the present invention: a front view of the bent end face conductive sheet;
fig. 16 is a tenth press station of example 1 of the present invention: a front view of a curved surface of the bent tube spring portion;
fig. 17 is a stamping eleventh station of example 1 of the present invention: a front view of the tube spring forming and blanking;
fig. 18 is a partial plan view of a multi-contact conductive sheet semi-finished web processed by a laser cutting machine according to embodiment 2 of the present invention;
fig. 19 is an isometric view of a multi-contact conductive sheet processed using a roll forming machine in accordance with example 2 of the present invention;
fig. 20 is an isometric view of a multi-contact conductive sheet with integrated end-face conductive sheets according to example 3 of the present invention;
wherein: 1. a circular ring-shaped tube spring; 2. an end face conducting strip; 3. a recessed platform; 4. a slot; 5. a circular arc-shaped elastic sheet; 6. a circular arc curved surface; 7. an opening; 8. a battery positive electrode; 9. a battery steel case cathode; 11. a pilot nail hole; 12. odd number slotted holes; 13. even number of slots; 14. a partial outer aperture; 15. a middle arc curved surface; 16. arc curved surfaces on two sides; 17. an end face platform; 18. a recessed platform; 19. and (5) leftover materials.
The specific implementation mode is as follows:
the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example 1 was carried out:
the multi-contact conducting strip of the cylindrical battery series connection adopts a stainless steel sheet, the multi-contact conducting strip is composed of a circular ring-shaped tube spring and an end surface conducting strip at the bottom of a circular ring, the end surface conducting strip and the circular ring-shaped tube spring are of an integral structure, 3 arc curved surfaces protruding inwards are arranged in the axial direction of the circular ring-shaped tube spring on the circumference, 30 slotted holes are uniformly distributed on each arc curved surface, an arc-shaped elastic sheet protruding inwards is formed between every two slotted holes, the size of the inner wall of the circular ring-shaped tube spring is in clearance fit with the diameter of the battery, the arc-shaped elastic sheet protruding inwards and the diameter of the battery are in interference fit, the end surface conducting strip is formed by splicing 6 planes similar to a triangle, a concave platform is arranged in the middle of the end surface conducting strip, the concave platform of the end surface conducting strip is welded with a convex electrode (battery anode), and the arc-shaped elastic sheet protruding inwards on the inner wall The negative electrode of the cell) to realize the series connection of the two batteries.
The manufacturing method of the multi-contact conducting strip of the cylindrical battery series connection adopts the multi-station progressive die punch forming: a first station: punching a positive nail hole (as shown in fig. 7); a second station: punching odd slots (as shown in fig. 8); a third station: punching even number slots (as shown in fig. 9); a fourth station: punching a partial outer shape hole (as shown in fig. 10); a fifth station: drawing an intermediate curved surface (as shown in fig. 11); a sixth station: drawing two side arc curved surfaces (as shown in figure 12); a seventh station: a concave platform of the conducting strip on the drawing end face (as shown in figure 13); an eighth station: stamping end face conductive sheet profiles (as shown in fig. 14); a ninth station: bent end face conductive strips (as shown in fig. 15); a tenth station: bending the tube spring portion curved (as shown in fig. 16); an eleventh station: the tube spring is formed and blanked (as shown in fig. 17).
In view of the useful life of the mould, the aforementioned second station: the punching groove hole is changed into a second station: punching odd slotted holes and a third station: punching even number of slotted holes; to improve the product quality, the aforementioned fourth station: the drawing arc curved surface is changed into a fifth station: drawing the middle arc curved surface and a sixth station: drawing arc curved surfaces on two sides. Further, through the eleventh station: the multi-contact conducting strip formed and blanked by the tube spring has larger opening size due to the elastic rebound of the metal sheet. Because the multi-contact conducting plate needs to be installed in the circular hole matched with the multi-contact conducting plate, the size of the opening of the multi-contact conducting plate installed in the circular hole can meet the requirements of drawings.
Example 2 was carried out:
the structure size of the multi-contact conducting strip of the cylindrical batteries connected in series according to the embodiment 2 is the same as that of the embodiment 1, the material is a beryllium bronze sheet subjected to annealing treatment, and the manufacturing method is that the beryllium bronze sheet is processed and formed by a laser cutting machine and a rolling forming machine. The laser cutting machine completes the working procedures of slotted holes, blanking and the like of the multi-contact conducting strips of the cylindrical batteries connected in series and is processed into semi-finished material strips of the multi-contact conducting strips; the semi-finished material belt of the multi-contact conducting strip is subjected to the processes of deep drawing arc curved surface, bending end face conducting strip, tube spring forming, blanking and the like of the multi-contact conducting strip by a rolling forming machine. The multi-contact conducting strip is quenched after being formed, so that the elasticity of the multi-contact conducting strip is improved, and the service life of the multi-contact conducting strip is prolonged.
Example 3 of implementation:
the structural size and manufacturing method of the multi-contact conductive sheet for series connection of cylindrical batteries according to embodiment 3 are substantially the same as those of embodiment 1 and embodiment 2, except that the length direction of the circular ring-shaped tube spring slot hole forms an angle of 10 ℃ with the axis of the circular ring-shaped tube spring (as shown in fig. 20).
Claims (4)
1. A multi-contact conductive sheet for cylindrical batteries connected in series and a method for manufacturing the same, characterized in that: the multi-contact conducting strip connected in series with the cylindrical battery is formed by pressing a conducting metal sheet, the multi-contact conducting strip connected in series with the cylindrical battery consists of a circular tube spring and an end surface conducting strip at the bottom of the circular ring, the end surface conducting strip and the circular tube spring are in an integral structure, the circular tube spring is provided with a plurality of inward-convex arc curved surfaces in the axial direction on the circumference, each arc curved surface is provided with a plurality of slots which are uniformly distributed, an inward-convex arc-shaped elastic sheet is formed between every two slots, the size of the inner wall of the circular tube spring is in clearance fit with the diameter of the battery, the inward-convex arc-shaped elastic sheet of the circular tube spring is in interference fit with the diameter of the battery, the end face conducting strip is a bottom plane connected with the circular tube spring, a concave platform is arranged in the middle of the end face conducting strip, and the cylindrical battery series connection multi-contact conducting strip and the manufacturing method thereof can be formed by adopting a multi-station progressive die in a stamping mode: a first station: punching a guide nail hole; a second station: punching a slotted hole; a third station: punching a part of the outer hole; a fourth station: drawing an arc curved surface; a fifth station: stamping the shape of the end face conducting strip; a sixth station: the deep drawing end surface conducting strip is concave; a seventh station: bending the end face conducting plate; an eighth station: bending the curved surface of the tube spring part; a ninth station: and (5) forming and blanking a tube spring.
2. The multi-contact conductive sheet for cylindrical battery series connection and the manufacturing method thereof according to claim 1, further characterized in that: the manufacturing method of the multi-contact conducting strip of the cylindrical batteries connected in series can also adopt the processing method of a laser cutting machine to complete the procedures of punching slot holes, blanking shapes and the like of the multi-contact conducting strip and process the multi-contact conducting strip into a semi-finished material strip of the multi-contact conducting strip.
3. The multi-contact conductive sheet for cylindrical battery series connection and the manufacturing method thereof according to claim 1, further characterized in that: the manufacturing method of the multi-contact conducting strip of the cylindrical batteries connected in series can also adopt a processing method of a rolling forming machine to finish the procedures of the deep drawing arc curved surface, the bent end surface conducting strip, the tube spring forming, the blanking and the like of the multi-contact conducting strip, and the finished product of the multi-contact conducting strip is processed.
4. The multi-contact conductive sheet for cylindrical battery series connection and the manufacturing method thereof according to claim 1, further characterized in that: the sheet metal for manufacturing the multi-contact conducting strip of the cylindrical battery in series connection can adopt an annealing state, thereby being beneficial to the forming of the multi-contact conducting strip, quenching treatment can be carried out after the multi-contact conducting strip is processed and formed, the elasticity of the multi-contact conducting strip is improved, and the service life of the multi-contact conducting strip is prolonged.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910408519.6A CN111952526A (en) | 2019-05-16 | 2019-05-16 | Multi-contact conductive sheet for cylindrical battery series connection and method for manufacturing the same |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910408519.6A CN111952526A (en) | 2019-05-16 | 2019-05-16 | Multi-contact conductive sheet for cylindrical battery series connection and method for manufacturing the same |
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| CN111952526A true CN111952526A (en) | 2020-11-17 |
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| CN201910408519.6A Pending CN111952526A (en) | 2019-05-16 | 2019-05-16 | Multi-contact conductive sheet for cylindrical battery series connection and method for manufacturing the same |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103515565A (en) * | 2012-06-29 | 2014-01-15 | 王怀云 | Connection method for connecting cylindrical monomer batteries in series |
| WO2019001301A1 (en) * | 2017-06-30 | 2019-01-03 | 苏州安靠电源有限公司 | Battery module and large-capacity battery |
| CN208848982U (en) * | 2018-11-09 | 2019-05-10 | 王怀云 | The composite conducting piece realizing cylindrical battery series connection and being connected in parallel |
| CN209843829U (en) * | 2019-05-16 | 2019-12-24 | 王怀云 | Multi-contact conducting strip for series connection of cylindrical batteries |
-
2019
- 2019-05-16 CN CN201910408519.6A patent/CN111952526A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103515565A (en) * | 2012-06-29 | 2014-01-15 | 王怀云 | Connection method for connecting cylindrical monomer batteries in series |
| WO2019001301A1 (en) * | 2017-06-30 | 2019-01-03 | 苏州安靠电源有限公司 | Battery module and large-capacity battery |
| CN208848982U (en) * | 2018-11-09 | 2019-05-10 | 王怀云 | The composite conducting piece realizing cylindrical battery series connection and being connected in parallel |
| CN209843829U (en) * | 2019-05-16 | 2019-12-24 | 王怀云 | Multi-contact conducting strip for series connection of cylindrical batteries |
Non-Patent Citations (1)
| Title |
|---|
| 李叶林主编, 电子科技大学出版社 * |
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Address after: 150028 2nd Floor, Unit 1, Building 5, Enterprise Accelerator, West Side, No. 15555, Zhongyuan Avenue, Songbei District, Harbin City, Heilongjiang Province Harbin Zhiming Technology Co.,Ltd. Applicant after: Wang Huaiyun Address before: 150086 Harbin Zhi Ming Road, Nangang District, Heilongjiang, Harbin 13, China Ming Technology Co., Ltd. Applicant before: Wang Huaiyun |
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Application publication date: 20201117 |
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