CN216980659U - Lithium ion battery pole piece and shell connecting structure and power battery - Google Patents
Lithium ion battery pole piece and shell connecting structure and power battery Download PDFInfo
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- CN216980659U CN216980659U CN202220200372.9U CN202220200372U CN216980659U CN 216980659 U CN216980659 U CN 216980659U CN 202220200372 U CN202220200372 U CN 202220200372U CN 216980659 U CN216980659 U CN 216980659U
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- lithium ion
- ion battery
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- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 title claims abstract description 43
- 229910001416 lithium ion Inorganic materials 0.000 title claims abstract description 43
- 239000002184 metal Substances 0.000 claims abstract description 62
- 229910052751 metal Inorganic materials 0.000 claims abstract description 62
- 239000011888 foil Substances 0.000 claims abstract description 47
- 238000004804 winding Methods 0.000 claims abstract description 25
- 238000003466 welding Methods 0.000 claims description 54
- 238000002955 isolation Methods 0.000 claims description 6
- 239000000463 material Substances 0.000 claims description 5
- 238000005096 rolling process Methods 0.000 claims 1
- 239000012528 membrane Substances 0.000 abstract description 6
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 16
- 230000006872 improvement Effects 0.000 description 12
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 9
- 229910052759 nickel Inorganic materials 0.000 description 8
- 229910052802 copper Inorganic materials 0.000 description 7
- 239000010949 copper Substances 0.000 description 7
- 238000007599 discharging Methods 0.000 description 7
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 4
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 4
- 229910052786 argon Inorganic materials 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 229910002092 carbon dioxide Inorganic materials 0.000 description 2
- 239000001569 carbon dioxide Substances 0.000 description 2
- 239000011889 copper foil Substances 0.000 description 2
- 238000005520 cutting process Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000010894 electron beam technology Methods 0.000 description 2
- 230000001965 increasing effect Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000001737 promoting effect Effects 0.000 description 2
- 235000015842 Hesperis Nutrition 0.000 description 1
- 235000012633 Iberis amara Nutrition 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 239000000295 fuel oil Substances 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 229910000679 solder Inorganic materials 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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Abstract
The utility model belongs to the technical field of batteries, and particularly relates to a lithium ion battery pole piece and shell connecting structure which comprises a conductive shell and a winding core arranged in the conductive shell, wherein the winding core comprises a pole piece and an isolating membrane wrapping the pole piece, the pole piece is provided with a metal belt welded on the inner wall of the conductive shell, the pole piece is provided with a foil part exposed out of the isolating membrane, and the foil part is abutted against the inner wall of the conductive shell. The utility model improves the connection reliability and the safety reliability of the pole piece and the shell, and effectively meets the requirement of high-rate charge and discharge of the battery. In addition, the utility model also provides a power battery.
Description
Technical Field
The utility model belongs to the technical field of battery manufacturing, and particularly relates to a connecting structure of a lithium ion battery pole piece and a shell and a power battery.
Background
Lithium ion batteries are used in electronic devices such as mobile phones, tablet terminals, notebook personal computers, and digital cameras, and the mass of a battery case has a large influence on the overall life of the battery in lithium ion batteries.
However, as the demand for batteries in various fields increases, how to improve the large-current charge and discharge characteristics of lithium ion secondary batteries has become one of the current research focuses. The inventor finds that the conventional battery is easy to generate the problems of insufficient solder joint, poor overcurrent capacity and the like, so that the connection reliability of the pole group and the shell of the battery is poor, and the requirement of high-rate charge and discharge of the battery cannot be met.
In view of the above, it is necessary to provide a technical solution to solve the above problems.
SUMMERY OF THE UTILITY MODEL
One of the objects of the present invention is: aiming at the defects of the prior art, the lithium ion battery pole piece and shell connecting structure is provided, the problem of poor connection reliability of the pole piece and the shell can be solved, and the requirements of high-rate charge and discharge of the battery are effectively ensured and met.
In order to achieve the purpose, the utility model adopts the following technical scheme:
a lithium ion battery pole piece and shell connection structure, comprising:
the conductive shell is internally provided with a winding core;
the winding core comprises a pole piece and an isolating film wrapping the pole piece;
the pole piece is provided with a metal belt welded on the inner wall of the conductive shell;
the pole piece is provided with a foil part exposed out of the isolating membrane, the foil part is abutted to the inner wall of the conductive shell, and the foil part is used for increasing the conductive area of the battery.
As an improvement of the connection structure of the lithium ion battery pole piece and the shell, the foil part is arranged around the outer edge of the isolation film and is abutted against the top or the bottom of the conductive shell.
As an improvement of the connection structure of the lithium ion battery pole piece and the shell, the foil part is of an annular structure, the foil part is uniformly exposed out of the isolation film, and the conductive shell is a cylindrical metal shell.
As an improvement of the connection structure of the lithium ion battery pole piece and the shell, the horizontal width of the foil part is 0.5 mm-10 mm, and the horizontal width of the foil part is equal to the width of the contact between the foil part and the conductive shell.
As an improvement of the lithium ion battery pole piece and shell connection structure of the present invention, the metal strip and the foil portion are located on the same side of the winding core, and the metal strip and the foil portion are made of the same material or different materials.
As an improvement of the connection structure of the lithium ion battery pole piece and the shell, the welding mode of the metal strip and the conductive shell is resistance welding, the conductive shell and the metal strip are provided with at least one welding point, and the width of the metal strip is 1.5 mm-8 mm.
As an improvement of the connection structure of the lithium ion battery pole piece and the shell, one side of the metal belt, which is far away from the conductive shell, is provided with an insulating layer, and the insulating layer has the function of preventing the short circuit of the positive electrode and the negative electrode of the battery cell, so that the safety and the reliability of the connection of the pole piece and the shell are further improved.
As an improvement of the connection structure of the lithium ion battery pole piece and the shell, the metal strip is bent and arranged on the winding core and welded at the top center or the bottom center of the conductive shell.
As an improvement of the connection structure of the lithium ion battery pole piece and the shell, the winding core is provided with a cylindrical welding channel, and the end part of the metal belt corresponds to the welding channel.
As an improvement of the connection structure of the lithium ion battery pole piece and the shell, the pole piece and the metal belt are integrally formed or fixedly connected.
As an improvement of the connection structure of the lithium ion battery pole piece and the shell, the metal band is welded at the head or the tail of the pole piece.
As an improvement of the connection structure of the lithium ion battery pole piece and the shell, the length of the metal strip is 0.2-0.8 times of the width of the pole piece, and the length of the insulating layer is 0.15-0.4 times of the width of the pole piece.
As an improvement of the connection structure of the lithium ion battery pole piece and the shell, the welding channel and the winding core are both cylindrical, the radius of the welding channel is D1, the radius of the winding core is D2, and the length of the metal belt is L1, which satisfy the following relation: l1 is more than or equal to 2 XD 1 and less than or equal to D1+ D2.
The second purpose of the utility model is: the power battery is provided with the lithium ion battery pole piece and shell connecting structure.
The utility model has the beneficial effects that: the utility model comprises a conductive shell and a winding core arranged in the conductive shell, wherein the winding core comprises a pole piece and an isolating membrane wrapping the pole piece, the pole piece is provided with a foil part exposed out of the isolating membrane and abutted against the conductive shell, the foil part can increase the conductive area of the battery, thereby ensuring the realization of large-current charging and discharging, and the pole piece is provided with a metal strip which is welded on the inner wall of the conductive shell, so that the winding core and the conductive shell have higher installation firmness, thereby effectively solving the problem of poor connection reliability of the pole piece and the shell, further enhancing the overcurrent capacity of the connection part of the conductive shell and the pole piece, and effectively ensuring and meeting the requirement of large-rate charging and discharging of the battery.
Drawings
Features, advantages and technical effects of exemplary embodiments of the present invention will be described below with reference to the accompanying drawings.
Fig. 1 is a perspective view of a first embodiment of the present invention.
Fig. 2 is a bottom view of the battery cell in fig. 1.
Fig. 3 is an enlarged view of a portion a in fig. 2.
Fig. 4 is a schematic structural diagram of a pole piece and a metal strip according to a first embodiment of the present invention.
Fig. 5 is a schematic structural view of a metal tape and an insulating layer according to a first embodiment of the present invention.
Fig. 6 is a perspective view of a second embodiment of the present invention.
Wherein the reference numerals are as follows:
1-a conductive housing;
2-a winding core; 20-welding a channel;
3-pole piece; 30-a foil portion;
4-a barrier film;
5-a metal strip;
6-insulating layer
7-welding spots;
d1-radius of the weld path; d2-radius of the core; w-horizontal width of the foil portion; w1-width of metal strip; w2-width of the pole piece; l1-length of metal strip; l2 — length of insulating layer.
Detailed Description
As used in the specification and in the claims, certain terms are used to refer to particular components. As one skilled in the art will appreciate, manufacturers may refer to a component by different names. This specification and claims do not intend to distinguish between components that differ in name but not function. In the following description and in the claims, the terms "include" and "comprise" are used in an open-ended fashion, and thus should be interpreted to mean "include, but not limited to. "substantially" means within an acceptable error range, and a person skilled in the art can solve the technical problem within a certain error range to substantially achieve the technical effect.
In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", horizontal ", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience in describing the present invention and simplifying the description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention.
In the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can include, for example, fixed connections, detachable connections, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
According to the utility model, the connection reliability and the safety reliability of the pole piece and the shell are improved by optimizing the connection structure of the pole piece and the shell, so that the connection structure effectively meets the requirement of high-rate charge and discharge of the battery. The present invention will be described in more detail with reference to the accompanying drawings 1 to 6 and a plurality of embodiments, but the present invention is not limited thereto.
Implementation mode one
A lithium ion battery pole piece and shell connecting structure is shown in figures 1-3 and comprises:
the winding core 2 comprises a pole piece 3 and an isolating film 4 wrapping the pole piece 3;
the pole piece 3 is provided with a foil part 30 exposed out of the isolating membrane 4, the foil part 30 is abutted against the inner wall of the conductive shell 1, the conductive shell 1 can be a metal shell, the pole piece 3 can be a negative pole piece, the foil part 30 can be made of copper foil, and the foil part 30 is directly flattened and abutted against the conductive shell 1, so that the conductive area of the battery can be increased and the charging and discharging of large current can be realized;
and, pole piece 3 is provided with strap 5, and simultaneously, in connection structure, the material of strap 5 can be different with foil portion 30, and strap 5 can be the nickel strap, and the nickel strap welds in electrically conductive casing 1 for roll up core 2 and electrically conductive casing 1 installation firmly reliable, not only solved the poor problem of the reliability of being connected of pole piece 3 and electrically conductive casing 1 effectively, still strengthened the ability of overflowing of the junction of pole piece 3 and electrically conductive casing 1.
In the connection structure of the lithium ion battery pole piece and the housing of the embodiment, the foil portion 30 is surrounded on the outer edge of the isolation film 4, and the foil portion 30 is abutted to the top or the bottom of the conductive housing 1, wherein the foil portion 30 is of an annular structure, the top or the bottom of the conductive housing 1 can be planar, and the foil portion 30 is uniformly exposed out of the isolation film 4, thereby being beneficial to efficient and stable transmission of current.
In the connecting structure of the lithium ion battery pole piece and the case of the present embodiment, the foil portion 30 and the metal band 5 are located on the same side of the winding core 2, so that the internal space of the battery can be saved, wherein the foil portion 30 and the metal band 5 can be located on the top or the bottom of the winding core 2, so that the foil portion 30 abuts against the top or the bottom of the conductive case 1, and the metal band 5 is welded on the top or the bottom of the conductive case 1.
As shown in fig. 2 to 3, the foil portion 30 may be flattened in a spiral shape, when the foil portion 30 abuts against the bottom of the conductive housing 1, the foil portion 30 and the bottom of the conductive housing 1 may be in surface contact, and the horizontal width W of the foil portion 30 is 0.5mm to 10mm, and the horizontal width W of the foil portion 30 is equal to the width of the foil portion 30 abutting against the conductive housing 1.
In the lithium ion battery pole piece and housing connection structure of the present embodiment, in addition to the foil portion 30 effectively promoting the charging and discharging of the battery with large current, the metal strip 5 also has a corresponding function of promoting the charging and discharging of the battery with large power, wherein the metal strip 5 and the pole piece 3 can be fixedly connected by welding, when the metal strip 5 is a nickel strip, as shown in fig. 4, the nickel strip is welded to the head or the tail of the pole piece 3, the welding method of the nickel strip and the pole piece 3 is at least one of resistance welding, friction welding, high-frequency welding, ultrasonic welding, laser welding, argon arc welding, plasma welding, carbon dioxide welding, flash welding, arc welding, electron beam welding and submerged arc welding, and the nickel strip and the foil portion 30 can be exposed in the same direction.
Preferably, the metal strip 5 and the conductive shell 1 are welded by resistance welding, when the metal strip 5 is welded to the bottom of the conductive shell 1, the bottom of the conductive shell 1 and the metal strip 5 have one or more welding spots 7, the number of the welding spots 7 may be 1 to 6, as shown in fig. 5, the width W1 of the metal strip 5 may be 1.5mm to 8mm, and the length L1 of the metal strip 5 may be 0.5 to 0.8 times the width W2 of the pole piece 3.
Further, the metal strip 5 and the conductive shell 1 may be welded by at least one of friction welding, high-frequency welding, laser welding, argon arc welding, ultrasonic welding, plasma welding, carbon dioxide welding, flash welding, arc welding, electron beam welding, and submerged arc welding.
As shown in fig. 5, an insulating layer 6 is disposed on a side of the metal strip 5 away from the conductive housing 1, a length L2 of the insulating layer 6 may be 0.25 to 0.4 times of a width W2 of the pole piece 3, and the insulating layer 6 may be made of insulating glue. The insulating layer 6 has the function of preventing the short circuit of the positive electrode and the negative electrode of the battery cell, so that the safety and reliability of the connection between the pole piece 3 and the conductive shell 1 are further improved.
In the lithium ion battery pole piece and shell connection structure of the present embodiment, in addition to the flattening process of the foil portion 30, the metal strip 5 may be bent and disposed on the winding core 2 to improve the space utilization rate inside the battery, that is, the metal strip 5 may be bent by 60 ° to 90 °, so that the metal strip 5 extends from the pole piece 3 to the top center or the bottom center of the conductive shell 1, and then the metal strip 5 is welded to the top center or the bottom center of the conductive shell 1 to form a plurality of welding spots 7.
The conductive shell 1 can be a cylindrical steel shell structure, the winding core 2 is provided with a cylindrical welding channel 20, the top center and the bottom center of the conductive shell 1 and the end portion of the metal strip 5 correspond to the welding channel 20, the welding channel 20 is a resistance welding channel, and the metal strip 5 is welded with the top center or the bottom center of the conductive shell 1 through the welding channel 20.
In the connection structure of the lithium ion battery pole piece and the shell, the welding channel 20 and the winding core 2 are both cylindrical, the radius of the welding channel 20 is D1, the radius of the winding core 2 is D2, the length of the metal belt 5 is L1, and 2 multiplied by D1, L1 and D1+ D2 are both equal to or less than L1.
Second embodiment
The difference from the first embodiment is that: as shown in fig. 6, the width of the nickel strap of the present embodiment may be 2mm to 6mm, the length of the nickel strap may be 0.2 to 0.5 times the width W2 of the pole piece 3, the length L2 of the insulating layer 6 may be 0.15 to 0.25 times the width W2 of the pole piece 3, the radius of the welding channel 20 is D1, the length of the metal strap 5 is L1, and L1 is 2 × D1, so that the charge and discharge performance of the connection structure of the lithium ion battery pole piece and the case is adjusted by adjusting the size of the metal strap 5.
Other structures of this embodiment are the same as those of the first embodiment, and are not described herein again.
Third embodiment
The difference from the first embodiment is that: the metal belt 5 of the present embodiment is a copper belt, which is integrally formed or fixedly connected to the pole piece 3, and the material of the copper belt is the same as that of the foil portion 30.
Moreover, when the copper strip and the pole piece 3 are integrally formed, the head or the tail of the pole piece 3 can be formed into the copper strip by a laser direct die cutting forming mode, the copper strip and the exposed copper foil of the pole piece 3 are exposed along the same direction, and therefore the high-rate charging and discharging of the battery are effectively promoted through the foil part 30 and the metal belt 5.
Other structures of this embodiment are the same as those of the first embodiment, and are not described herein again.
Embodiment IV
The difference from the third embodiment is that: the width of the copper strip of the embodiment can be 2 mm-6 mm, the length of the copper strip can be 0.2-0.5 times of the width W2 of the pole piece 3, the length L2 of the insulating layer 6 can be 0.15-0.25 times of the width W2 of the pole piece 3, the radius of the welding channel 20 is D1, the length of the metal strip 5 is L1, and L1 is 2 × D1, so that the charging and discharging performance of the connection structure of the lithium ion battery pole piece and the shell is adjusted by adjusting the size of the metal strip 5.
Other structures of this embodiment are the same as those of the third embodiment, and are not described again here.
Fifth embodiment
A power battery is provided with a lithium ion battery pole piece and shell connecting structure of the first to the fourth embodiments. Also, the power battery is applicable to various devices using batteries, wherein the devices may be vehicles, mobile phones, portable devices, notebook computers, ships, spacecrafts, electric toys, electric tools, and the like. The vehicle can be a fuel oil vehicle, a gas vehicle or a new energy vehicle, and the new energy vehicle can be a pure electric vehicle, a hybrid electric vehicle or a range-extended vehicle and the like; spacecraft include aircraft, rockets, space shuttles, spacecraft, and the like; electric toys include stationary or mobile electric toys, such as game machines, electric car toys, electric ship toys, electric airplane toys, and the like; the electric power tools include metal cutting electric power tools, grinding electric power tools, assembly electric power tools, and electric power tools for railways, such as electric drills, electric grinders, electric wrenches, electric screwdrivers, electric hammers, electric impact drills, concrete vibrators, and electric planers.
Variations and modifications to the above-described embodiments may also occur to those skilled in the art, which fall within the scope of the utility model as disclosed and taught herein. Therefore, the present invention is not limited to the above-mentioned embodiments, and any obvious modifications, substitutions or alterations based on the present invention will fall within the protection scope of the present invention. Furthermore, although specific terms are employed herein, they are used in a generic and descriptive sense only and not for purposes of limitation.
Claims (12)
1. The utility model provides a lithium ion battery pole piece and casing connection structure which characterized in that includes:
the conductive shell (1), wherein a winding core (2) is arranged in the conductive shell (1);
the winding core (2) comprises a pole piece (3) and an isolation film (4) wrapping the pole piece (3);
the pole piece (3) is provided with a metal belt (5) welded on the inner wall of the conductive shell (1);
the pole piece (3) is provided with a foil part (30) exposed out of the isolating film (4), and the foil part (30) is abutted against the inner wall of the conductive shell (1).
2. The lithium ion battery pole piece and casing connection structure of claim 1, wherein: the foil portion (30) is arranged around the outer edge of the isolation film (4), and the foil portion (30) is abutted to the top or the bottom of the conductive shell (1).
3. The lithium ion battery pole piece and shell connection structure of claim 1, wherein: the foil part (30) and the metal band (5) are positioned on the same side of the winding core (2), and the metal band (5) and the foil part (30) are made of the same or different materials.
4. The structure for connecting a lithium ion battery pole piece and a shell as claimed in any one of claims 1 to 3, wherein: the horizontal width of the foil part (30) is 0.5mm to 10 mm.
5. The lithium ion battery pole piece and shell connection structure of claim 1, wherein: the welding mode of the metal band (5) and the conductive shell (1) is resistance welding, the conductive shell (1) and the metal band (5) are at least provided with one welding point (7), and the width of the metal band (5) is 1.5-8 mm.
6. The lithium ion battery pole piece and shell connection structure of claim 1 or 5, wherein: and an insulating layer (6) is arranged on one side of the metal belt (5) departing from the conductive shell (1).
7. The lithium ion battery pole piece and shell connection structure of claim 1 or 5, wherein: the metal band (5) is bent and arranged on the winding core (2), and the metal band (5) is welded at the top center or the bottom center of the conductive shell (1).
8. The lithium ion battery pole piece and shell connection structure of claim 1 or 5, wherein: the winding core (2) has a cylindrical welding channel (20), the end of the metal strip (5) corresponding to the welding channel (20).
9. The lithium ion battery pole piece and shell connection structure of claim 1 or 5, wherein: the metal belt (5) is welded at the head or the tail of the pole piece (3).
10. The lithium ion battery pole piece and shell connection structure of claim 6, wherein: the length of the metal belt (5) is 0.2-0.8 times of the width of the pole piece (3), and the length of the insulating layer (6) is 0.15-0.4 times of the width of the pole piece (3).
11. The lithium ion battery pole piece and casing connection structure of claim 8, wherein: the welding passageway (20) with it is cylindrical to roll up core (2), the radius of welding passageway (20) is D1, the radius of rolling up core (2) is D2, the length of metal band (5) is L1, satisfies the relational expression: 2 XD 1L 1D 1+ D2.
12. A power battery, characterized by: the power battery is provided with the lithium ion battery pole piece and shell connecting structure as claimed in any one of claims 1-11.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220200372.9U CN216980659U (en) | 2022-01-25 | 2022-01-25 | Lithium ion battery pole piece and shell connecting structure and power battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220200372.9U CN216980659U (en) | 2022-01-25 | 2022-01-25 | Lithium ion battery pole piece and shell connecting structure and power battery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216980659U true CN216980659U (en) | 2022-07-15 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220200372.9U Active CN216980659U (en) | 2022-01-25 | 2022-01-25 | Lithium ion battery pole piece and shell connecting structure and power battery |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216980659U (en) |
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2022
- 2022-01-25 CN CN202220200372.9U patent/CN216980659U/en active Active
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Address after: 215500 No. 68, Xin'anjiang Road, Southeast street, Changshu, Suzhou, Jiangsu Patentee after: Jiangsu Zhengli New Energy Battery Technology Co.,Ltd. Country or region after: China Address before: 215500 No. 68, Xin'anjiang Road, Southeast street, Changshu, Suzhou, Jiangsu Patentee before: Jiangsu Zenergy Battery Technologies Co.,ltd Country or region before: China |
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