CN111785902A - Bi-pass single battery and manufacturing method thereof - Google Patents
Bi-pass single battery and manufacturing method thereof Download PDFInfo
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- CN111785902A CN111785902A CN202010682357.8A CN202010682357A CN111785902A CN 111785902 A CN111785902 A CN 111785902A CN 202010682357 A CN202010682357 A CN 202010682357A CN 111785902 A CN111785902 A CN 111785902A
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- 238000004519 manufacturing process Methods 0.000 title claims abstract description 12
- 238000003466 welding Methods 0.000 claims abstract description 21
- 238000005520 cutting process Methods 0.000 claims description 6
- 238000010586 diagram Methods 0.000 description 11
- 239000004033 plastic Substances 0.000 description 5
- 238000002347 injection Methods 0.000 description 4
- 239000007924 injection Substances 0.000 description 4
- 239000007788 liquid Substances 0.000 description 4
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 3
- 239000011889 copper foil Substances 0.000 description 3
- 238000011161 development Methods 0.000 description 3
- 230000018109 developmental process Effects 0.000 description 3
- 239000003792 electrolyte Substances 0.000 description 3
- 230000005611 electricity Effects 0.000 description 2
- 238000003780 insertion Methods 0.000 description 2
- 230000037431 insertion Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000004146 energy storage Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229910000679 solder Inorganic materials 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
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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
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Abstract
The application discloses a bi-pass single battery and a manufacturing method thereof, wherein the bi-pass single power battery comprises a first battery cell, a second battery cell, a first electrode assembly and a second electrode assembly, the first battery cell and the second battery cell are arranged in parallel, the first electrode assembly is respectively and electrically connected with one end of the first battery cell and one end of the second battery cell, and the second electrode assembly is respectively and electrically connected with the other end of the first battery cell and the other end of the second battery cell; the first electrode assembly further comprises a first connecting piece and a first pole, the first connecting piece comprises a first fixing portion, a second fixing portion and a main body portion, the first fixing portion and the second fixing portion are respectively connected with two opposite sides of the main body portion and extend in the same direction or different directions, the first fixing portion is connected with one end of the first battery cell in a welding mode, the second fixing portion is connected with the same end of the second battery cell in a welding mode, and the first pole is electrically connected with the main body portion.
Description
Technical Field
The application relates to the technical field of batteries, in particular to a bi-pass single battery and a manufacturing method thereof.
Background
With the vigorous development of the new energy industry and the further popularization of new energy electric vehicles, the acceptance of people on new energy passenger vehicles is gradually improved. To power electricity core manufacturer, how to further promote the volume space utilization of power electricity core module, in limited lambkin car space, promote the load electric quantity, satisfy long duration requirement to can adopt the system scheme of low-cost high reliability, undoubtedly be the most crucial technical difficulty.
In view of the above, it is desirable to develop a power battery with high energy density.
Disclosure of Invention
The application aims to provide a bi-pass single battery and a manufacturing method thereof so as to solve the problem of endurance of an electric automobile.
In order to achieve the purpose, the application adopts the following technical scheme: provided is a dual-pass unit cell including: the battery comprises a first battery cell, a second battery cell, a first electrode assembly and a second electrode assembly, wherein the first battery cell and the second battery cell are arranged in parallel, the first electrode assembly is respectively and electrically connected with one end of the first battery cell and one end of the second battery cell, and the second electrode assembly is respectively and electrically connected with the other end of the first battery cell and the other end of the second battery cell; the first electrode assembly further comprises a first connecting piece and a first pole, the first connecting piece comprises a first fixing portion, a second fixing portion and a main body portion, the first fixing portion and the second fixing portion are respectively connected with two opposite sides of the main body portion and extend in the same direction or different directions, the first fixing portion is connected with one end of the first battery cell in a welding mode, the second fixing portion is connected with the same end of the second battery cell in a welding mode, and the first pole is electrically connected with the main body portion.
Further, the first battery cell and the second battery cell are all of a full-lug structure, and the first fixing portion, the second fixing portion and the main body portion are arranged in a surrounding mode to form a U-shaped structure.
Further, first electric core and second electric core are cross cutting utmost point ear structure, and first fixed part, second fixed part set up with the main part is range upon range of respectively.
Further, the length of the first fixing part is 1.2 to 3 times of the length of the main body part; the second fixing part has a length 1.2 to 3 times that of the main body part.
Further, a plurality of depressions are provided on a side of the main body portion facing the second electrode assembly.
Further, the depth of the recess is 5% to 30% of the thickness of the body portion.
Further, the body portion is provided with a plurality of dimple regions having a thickness of 10 to 60% of the thickness of the body portion.
Furthermore, the double-pass single battery also comprises a shell with two double-pass ends; the first electrode assembly further comprises a first end cover, the first pole penetrates through the first end cover, the first battery cell and the second battery cell are integrally inserted into the shell, the first end cover covers one end of the shell, and the second electrode assembly covers the opposite end of the shell.
Further, the projected cross section of the pit is circular or square.
In order to solve the technical problem, the application also provides a manufacturing method of the bi-pass single power battery, wherein the bi-pass single power battery comprises a first battery cell, a second battery cell, a first electrode assembly and a second electrode assembly; the first electrode assembly further includes a first connection tab and a first terminal; the first connecting piece comprises a first fixing part, a second fixing part and a main body part, wherein the first fixing part and the second fixing part are respectively connected with two opposite sides of the main body part and extend in the same direction or different directions;
the manufacturing method comprises the following steps: electrically connecting a second electrode assembly with one end of the first battery cell and one end of the second battery cell respectively; folding the first battery cell and the second battery cell to be in a parallel state; and electrically connecting the first fixing part with one end of the first battery cell, which is far away from the second electrode assembly, and electrically connecting the second fixing part with one end of the second battery cell, which is far away from the second electrode assembly.
The beneficial effects of the embodiment of the application are as follows: the first battery cell and the second battery cell are welded together in a flattened state, then the first battery cell and the second battery cell are folded, and the first fixing part and the second fixing part are welded with the other ends of the first battery cell and the second battery cell respectively. In order to avoid first fixed part and the second fixed part of first connecting piece to be sheltered from welding instrument by the main part when being in welded connection with first electric core and second electric core together, first fixed part and second fixed part are connected with the relative both sides of main part respectively, and syntropy or incorgruous extension set up to the vacancy comes out an opening, in order to make things convenient for welding instrument to insert and weld between first fixed part and the second fixed part.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments or earlier developments of the present application, the drawings used in the embodiments or earlier developments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a power battery 100 provided herein;
fig. 2 is a schematic structural diagram of a two-pass cell 10 provided herein;
fig. 3 is a schematic diagram of the internal structure of a first embodiment of a two-pass cell 10 provided herein;
fig. 4 is a schematic view of the internal structure of the first electrode assembly 13 provided herein;
fig. 5 is a schematic diagram of the internal structure of a second embodiment of the two-pass unit cell 10 provided in the present application;
FIG. 6 is a schematic view of the structure of the first electrode assembly 13 provided herein;
fig. 7 is a schematic structural view of the two-pass cell 10 provided in the present application in a flattened state;
fig. 8 is a schematic flow chart of a manufacturing method of the two-pass unit cell 10 provided in the present application.
The graphical notation is as follows:
The first connecting piece 131, the first pole 132 and the first plastic pad 137
Casing 15 rubber plug 16
Detailed Description
The descriptions in this application referring to "first", "second", etc. are for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicit indication of the number of technical features indicated.
The description relating to "first", "second", etc. in this disclosure is for descriptive purposes only and is not to be construed as indicating or implying relative importance or implicit to the number of technical features indicated.
Referring to fig. 1, fig. 1 is a schematic structural diagram of a power battery 100 provided in the present application.
The power battery 100 of the present application is mounted on a chassis of an electric vehicle as an energy storage member. The power battery 100 includes an outer case 20 and a plurality of double-pass unit cells 10, the plurality of double-pass unit cells 10 are arranged side by side in the outer case 20, and the first electrode assembly 13 and the second electrode assembly 14 of the double-pass unit cells 10 face a thickness region of the outer case 20, that is, a height region of the end portions of the double-pass cells facing the chassis.
Referring to fig. 1 to 4, fig. 2 is a schematic structural diagram of a double-pass unit cell 10 provided in the present application, fig. 3 is a schematic internal structural diagram of a first embodiment of the double-pass unit cell 10 provided in the present application, and fig. 4 is a schematic internal structural diagram of a first electrode assembly 13 provided in the present application.
The double-pass single power battery 100 comprises a first battery cell 11, a second battery cell 12, a first electrode assembly 13 and a second electrode assembly 14, wherein the first battery cell 11 and the second battery cell 12 are arranged side by side, the first electrode assembly 13 is respectively electrically connected with one ends of the first battery cell 11 and the second battery cell 12, and the second electrode assembly 14 is respectively electrically connected with the other ends of the first battery cell 11 and the second battery cell 12. That is, the first electrode assembly 13 and the second electrode assembly 14 are disposed at opposite ends of the first cell 11, and the first electrode assembly 13 and the second electrode assembly 14 are disposed at opposite ends of the second cell 12.
The first electrode assembly 13 further includes a first connection sheet 131 and a first electrode post 132, the first connection sheet 131 includes a first fixing portion 133, a second fixing portion 134 and a main body portion 135, the first fixing portion 133 and the second fixing portion 134 are respectively connected to two opposite sides of the main body portion 135, and extend in the same direction or in different directions, the first fixing portion 133 is electrically connected to one end of the first battery cell 11, the second fixing portion 134 is electrically connected to the same end of the second battery cell 12, and the first electrode post 132 is electrically connected to the main body portion 135.
In the present embodiment, first, the second electrode assembly 14 is welded and connected to the first cell 11 and the second cell 12 in a state of being flattened, then the first cell 11 and the second cell 12 are folded in half, and the first fixing portion 133 and the second fixing portion 134 are welded to the other ends of the first cell 11 and the second cell 12, respectively. In order to avoid that the first fixing portion 133 and the second fixing portion 134 of the first connecting piece 131 are shielded by the main body portion 135 when being connected with the first battery cell 11 and the second battery cell 12 in a welding manner, the first fixing portion 133 and the second fixing portion 134 are respectively connected with two opposite sides of the main body portion 135 and extend in the same direction or different directions, so that an opening is formed in the gap to facilitate the insertion of the welding instrument between the first fixing portion 133 and the second fixing portion 134 for welding. Fig. 3 shows that the first fixing portion 133 and the second fixing portion 134 are respectively connected to two opposite sides of the main body portion 135 and extend in the same direction; fig. 4 shows that the first fixing portion 133 and the second fixing portion 134 are respectively connected to two opposite sides of the main body portion 135 and extend in different directions.
The length of the first fixing portion 133 is 1.2 times to 3 times that of the main body portion 135, so that normal welding between the first fixing portion 133 and a tab of the first battery cell 11 is ensured; the length of the second fixing portion 134 is 1.2 times to 3 times that of the main body portion 135, so that normal welding of the second fixing portion 134 and the tab of the second cell 12 is ensured.
The body portion 135 is provided with a plurality of depressions 136 on a side facing the second electrode assembly 14. The plurality of recesses 136 prevent light reflection, which easily reflects laser light when the main body portion 135 is a smooth surface, resulting in energy loss of welding laser light, thereby causing cold joint. Insufficient joint surface strength can be caused by the cold joint welding, and the welding joint surface can fall off and be ignited during transportation or driving of the whole vehicle of the bi-pass single battery 10, so that the failure is caused.
Further, the thickness of the region of the body portion 135 provided with the plurality of dimples 136 is 10% to 60% of the thickness of the body portion 135, so that heat energy is more easily transferred and cold solder joint is prevented.
Referring to fig. 3, in an embodiment, the first electrical core 11 is a full tab structure, and the second electrical core 12 is a full tab structure, and the multi-layer copper foil is wound first, and then the end of the winding core is integrally pressed to form the full tab structure serving as a tab. Opposite ends of the body portion 135 are provided with a first fixing portion 133 and a second fixing portion 134, respectively, to constitute a U-shaped structure. The included angle between the first fixing portion 133 and the main body portion 135 is 75 degrees to 90 degrees; the included angle between the second fixing portion 134 and the main body portion 135 is 75 degrees to 90 degrees.
Referring to fig. 5, fig. 5 is a schematic diagram of an internal structure of a second embodiment of a two-pass cell 10 provided in the present application. In a second embodiment, the battery cell is in a die-cut tab structure. Specifically, first electric core 11 is cross cutting utmost point ear structure, and second electric core 12 is cross cutting utmost point ear structure, at first with the edge die-cut formation utmost point auricle of copper foil, then the back is convoluteed to the multilayer copper foil, and a plurality of utmost point auricles stack together and form the cross cutting utmost point ear structure as utmost point ear, and the advantage of cross cutting utmost point ear structure lies in that the area is little, and yielding is conveniently bent. The body 135 has first and second fixing portions 133 and 134, respectively, at opposite ends thereof, which are stacked on the body 135.
The specific assembling process is as follows: the first fixing portion 133 and the second fixing portion 134 are respectively at 90 degrees to the main body portion 135, the die-cut tab mechanism is respectively connected with the first fixing portion 133 and the second fixing portion 134, and then the first fixing portion 133 and the second fixing portion 134 are laterally pushed until the first fixing portion 133 and the second fixing portion 134 are respectively stacked with the main body portion 135, so that the space occupation rate of the die-cut tab mechanism is reduced.
Referring to fig. 2 and 6, fig. 6 is a schematic structural diagram of the first electrode assembly 13 provided in the present application.
The bi-pass cell 10 further includes a case 15 with two ends bi-pass; the first electrode assembly 13 further includes a first end cap 138, the first pole 132 penetrates the first end cap 138, the first cell 11 and the second cell 12 are integrally inserted into the casing 15, the first end cap 138 covers one end of the casing 15, and the second electrode assembly 14 covers the opposite end of the casing 15.
It should be explained that the first connection tab 131 is connected to the first electrical core 11 and the second electrical core 12 outside the casing 15, so that the first connection tab 131 can be connected to the first electrical core 11 and the second electrical core 12 by using a shorter tab on the premise that the casing 15 is not shielded, an excessive tab occupation space is avoided, and the space utilization rate of the casing 15 is improved. The connection mode can be laser welding or friction welding.
The first electrode assembly 13 further includes a first plastic pad 137. The first plastic pad 137 is disposed between the first end cap 138 and the first connection piece 131 to insulate between the first end cap 138 and the first connection piece 131.
The length of the first plastic pad 137 is greater than that of the battery cell, so that the first plastic pad 137 can prevent the battery cell from being scratched to the housing 15 and being damaged in the process of placing the battery cell in the housing 15.
The bi-pass single battery 10 further comprises a rubber plug 16, a liquid injection hole for injecting electrolyte into the casing 15 is formed in the casing 15, and the rubber plug 16 is in interference fit with the liquid injection hole. At the time of liquid injection, the two-way cell 10 is laid down to lower the center of gravity, and the electrolyte is injected from the liquid injection hole into the interior of the case 15. In addition, the pour hole is provided in the case 15 so as to be away from the first electrode assembly 13 and the second electrode assembly 14, thereby preventing the first electrode assembly 13 and the second electrode assembly 14 from being contaminated and corroded by the electrolyte overflowing during pouring into the pour hole.
Referring to fig. 5 and 7, fig. 7 is a schematic structural diagram of the double-pass single cell 10 provided in the present application in a flattened state, and fig. 8 is a schematic flow chart of a manufacturing method of the double-pass single cell 10 provided in the present application.
The two-way single power battery 100 comprises a first battery cell 11, a second battery cell 12, a first electrode assembly 13 and a second electrode assembly 14; the first electrode assembly 13 further includes a first connection tab 131 and a first pole 132; the first connecting piece 131 includes a first fixing portion 133, a second fixing portion 134 and a main body portion 135, wherein the first fixing portion 133 and the second fixing portion 134 are respectively connected to two opposite sides of the main body portion 135 and extend in the same direction or in different directions.
S101: the second electrode assembly 14 is electrically connected to one ends of the first cell 11 and the second cell 12, respectively.
S102: the first battery cell 11 and the second battery cell 12 are folded to be parallel.
S103: the first fixing portion 133 is electrically connected to an end of the first cell 11 away from the second electrode assembly 14, and the second fixing portion 134 is electrically connected to an end of the second cell 12 away from the second electrode assembly 14.
In one case, the first electrode assembly 13 is a positive electrode, and the second electrode assembly 14 is a negative electrode; in another case, the first electrode assembly 13 is a negative electrode, and the second electrode assembly 14 is a positive electrode, which is not limited herein.
First, the first cell 11 and the second cell 12 are layered, and the first electrode assembly 13 is connected to one end of the first cell 11 and one end of the second cell 12, respectively.
Then, the first cell 11 and the second cell 12 are folded to be parallel.
Finally, the first fixing portion 133 is electrically connected to an end of the first cell 11 away from the second electrode assembly 14, and the second fixing portion 134 is electrically connected to an end of the second cell 12 away from the second electrode assembly 14.
First, the second electrode assembly 14 is welded to the first cell 11 and the second cell 12 in a flattened state, and then the first cell 11 and the second cell 12 are folded in half, and the first fixing portion 133 and the second fixing portion 134 are welded to the other ends of the first cell 11 and the second cell 12, respectively. In order to avoid that the first fixing portion 133 and the second fixing portion 134 of the first connecting piece 131 are shielded by the main body portion 135 when being connected with the first battery cell 11 and the second battery cell 12 in a welding manner, the first fixing portion 133 and the second fixing portion 134 are respectively connected with two opposite sides of the main body portion 135 and extend in the same direction or different directions, so that an opening is formed in the gap to facilitate the insertion of the welding instrument between the first fixing portion 133 and the second fixing portion 134 for welding.
The manufacturing method of the double-pass single cell 10 of the present application may also be implemented on the basis of the double-pass single cell 10 of any of the above embodiments, which is not described herein in detail.
The above description is only a preferred embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications and equivalents of the present invention, which are made by the contents of the present specification and the accompanying drawings, or directly/indirectly applied to other related technical fields, are included in the scope of the present invention.
Claims (10)
1. A bi-pass cell, comprising: the battery comprises a first battery cell, a second battery cell, a first electrode assembly and a second electrode assembly, wherein the first battery cell and the second battery cell are arranged in parallel, the first electrode assembly is respectively and electrically connected with one end of the first battery cell and one end of the second battery cell, and the second electrode assembly is respectively and electrically connected with the other end of the first battery cell and the other end of the second battery cell;
the first electrode assembly further comprises a first connecting piece and a first pole, the first connecting piece comprises a first fixing part, a second fixing part and a main body part, the first fixing part and the second fixing part are respectively connected with two opposite sides of the main body part and extend in the same direction or different directions, the first fixing part is connected with one end of the first battery cell in a welding mode, the second fixing part is electrically connected with the same end of the second battery cell in an electrical mode, and the first pole is connected with the main body part in a welding mode.
2. Two-pass cell according to claim 1, characterized in that: the first battery cell and the second battery cell are all of full-lug structures, and the first fixing portion, the second fixing portion and the main body portion are jointly surrounded to form a U-shaped structure.
3. Two-pass cell according to claim 1, characterized in that: the first battery cell and the second battery cell are both in die-cutting lug structures, and the first fixing portion and the second fixing portion are respectively stacked with the main body portion.
4. Two-pass cell according to claim 1, characterized in that: the first fixing part length is 1.2 to 3 times of the main body part length; the second fixing portion has a length 1.2 to 3 times that of the main body portion.
5. Two-pass cell according to claim 1, characterized in that: a plurality of depressions are provided at a side of the body portion facing the second electrode assembly.
6. Two-pass cell according to claim 5, characterized in that: the depth of the recess is 5% to 30% of the thickness of the body portion.
7. Two-pass cell according to claim 5, characterized in that: the thickness of the main body part provided with the plurality of dimple areas is 10% to 60% of the thickness of the main body part.
8. Two-pass cell according to claim 1, characterized in that:
the bi-pass single battery further comprises a shell with two bi-pass ends; the first electrode assembly further comprises a first end cover, the first pole penetrates through the first end cover, the first battery cell and the second battery cell are integrally inserted into the shell, the first end cover covers one end of the shell, and the second electrode assembly covers the opposite end of the shell.
9. Two-pass cell according to claim 5, characterized in that: the projection section of the pit is circular or square.
10. A manufacturing method of a bi-pass single battery is characterized in that:
the double-pass single power battery comprises a first battery cell, a second battery cell, a first electrode assembly and a second electrode assembly; the first electrode assembly further includes a first connection tab and a first terminal post; the first connecting piece comprises a first fixing part, a second fixing part and a main body part, wherein the first fixing part and the second fixing part are respectively connected with two opposite sides of the main body part and extend in the same direction or different directions;
the manufacturing method comprises the following steps:
electrically connecting the second electrode assembly with one end of the first cell and one end of the second cell respectively;
folding the first battery cell and the second battery cell to be in a parallel state;
and electrically connecting the first fixing part with one end of the first battery cell, which is far away from the second electrode assembly, and electrically connecting the second fixing part with one end of the second battery cell, which is far away from the second electrode assembly.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010682357.8A CN111785902A (en) | 2020-07-15 | 2020-07-15 | Bi-pass single battery and manufacturing method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010682357.8A CN111785902A (en) | 2020-07-15 | 2020-07-15 | Bi-pass single battery and manufacturing method thereof |
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| CN111785902A true CN111785902A (en) | 2020-10-16 |
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| CN202010682357.8A Pending CN111785902A (en) | 2020-07-15 | 2020-07-15 | Bi-pass single battery and manufacturing method thereof |
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| CN105655651A (en) * | 2015-09-08 | 2016-06-08 | 江苏海四达电源股份有限公司 | Articulated reeling structure of U shaped busbar of lithium ion battery |
| CN106560936A (en) * | 2015-10-02 | 2017-04-12 | 三星Sdi株式会社 | Rechargeable battery |
| CN208142262U (en) * | 2018-05-10 | 2018-11-23 | 江苏海基新能源股份有限公司 | Full tab wound lithium-ion battery bus structures and lithium ion battery |
| CN209561523U (en) * | 2018-12-28 | 2019-10-29 | 蜂巢能源科技有限公司 | The power battery connection sheet and power cover board of multilayered structure |
| CN110729420A (en) * | 2019-09-09 | 2020-01-24 | 东莞塔菲尔新能源科技有限公司 | Power battery and assembly method of top cover and battery core of power battery |
| CN212434752U (en) * | 2020-07-15 | 2021-01-29 | 欣旺达电动汽车电池有限公司 | Bi-pass single battery and power battery |
-
2020
- 2020-07-15 CN CN202010682357.8A patent/CN111785902A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105655651A (en) * | 2015-09-08 | 2016-06-08 | 江苏海四达电源股份有限公司 | Articulated reeling structure of U shaped busbar of lithium ion battery |
| CN106560936A (en) * | 2015-10-02 | 2017-04-12 | 三星Sdi株式会社 | Rechargeable battery |
| CN208142262U (en) * | 2018-05-10 | 2018-11-23 | 江苏海基新能源股份有限公司 | Full tab wound lithium-ion battery bus structures and lithium ion battery |
| CN209561523U (en) * | 2018-12-28 | 2019-10-29 | 蜂巢能源科技有限公司 | The power battery connection sheet and power cover board of multilayered structure |
| CN110729420A (en) * | 2019-09-09 | 2020-01-24 | 东莞塔菲尔新能源科技有限公司 | Power battery and assembly method of top cover and battery core of power battery |
| CN212434752U (en) * | 2020-07-15 | 2021-01-29 | 欣旺达电动汽车电池有限公司 | Bi-pass single battery and power battery |
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Address after: 518107 Xinwangda Industrial Park, No.18, Tangjia south, Gongming street, Guangming New District, Shenzhen City, Guangdong Province Applicant after: Xinwangda Power Technology Co.,Ltd. Address before: 518107 Xinwangda Industrial Park, No.18, Tangjia south, Gongming street, Guangming New District, Shenzhen City, Guangdong Province Applicant before: SUNWODA ELECTRIC VEHICLE BATTERY Co.,Ltd. |
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| CB02 | Change of applicant information |