CN217239703U - High energy density cylinder type battery - Google Patents
High energy density cylinder type battery Download PDFInfo
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- CN217239703U CN217239703U CN202220697407.4U CN202220697407U CN217239703U CN 217239703 U CN217239703 U CN 217239703U CN 202220697407 U CN202220697407 U CN 202220697407U CN 217239703 U CN217239703 U CN 217239703U
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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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
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Abstract
The utility model provides a high energy density cylindrical battery, which comprises a shell component, wherein a shell in the shell component is sequentially provided with an insulating part, a second bus-collecting tray, a winding core, a first bus-collecting tray and a cover plate from bottom to top, the insulating part enables the second bus-collecting tray and the shell to be insulated, one side of the winding core is welded with the first bus-collecting tray, the other side of the winding core is welded with the second bus-collecting tray, the lower part of the second bus-collecting tray is integrally welded with an electrode post, the upper part of the electrode post is riveted with the bottom of the shell, and a cap is arranged below the electrode post; the upper part of the first confluence disc is integrally welded with the shell and the cover plate. The cylindrical battery with high energy density increases the use space of the internal winding core, increases the capacity of the battery core and improves the energy density of the battery core; meanwhile, the generation cost is reduced, and the working efficiency is improved.
Description
Technical Field
The utility model belongs to the technical field of power battery, especially, relate to a high energy density cylinder type battery.
Background
The traditional cylindrical battery cover has a complex structure; when the cap is used as a positive electrode and the shell is used as a negative electrode, the positive electrode and the negative electrode are conductively connected from two ends of a cylindrical battery, so that the design and welding of an external module bus bar are inconvenient; in addition, the power performance of the battery is influenced by less lugs. After being welded with a roll core, the bus drum and the cover plate are sealed in a roll groove mode, the roll groove position at least needs to occupy 2-3 mm of space, and the space utilization rate and the energy density of the battery cell are reduced; after the diameter of the battery core is increased, the battery core is easy to shift in the using process, the welding point is influenced, the insufficient welding is caused, and the performance and the service life are influenced.
Disclosure of Invention
In view of this, the present invention provides a cylindrical battery with high energy density to improve the energy density of the battery cell.
In order to achieve the above purpose, the technical scheme of the utility model is realized like this:
a high-energy-density cylindrical battery comprises a shell assembly, wherein a shell in the shell assembly is sequentially provided with an insulating part, a second bus collecting disc, a winding core, a first bus collecting disc and a cover plate from bottom to top, the insulating part enables the second bus collecting disc and the shell to be insulated, one side of the winding core is welded with the first bus collecting disc, the other side of the winding core is welded with the second bus collecting disc, the lower part of the second bus collecting disc is integrally welded with a pole, the upper part of the pole is riveted with the bottom of the shell, and a cover cap is arranged below the pole; the upper part of the first confluence disc is integrally welded with the shell and the cover plate.
Furthermore, the bottom of the shell is provided with an explosion-proof notch of the shell.
Furthermore, the middle part of the pole is provided with a pole through hole, and the inner wall of the pole through hole is provided with a pole step.
Furthermore, the pole and the shell are made of the same material, the pole through hole comprises an upper part and a lower part which are of an integrated structure, the upper part is of an inverted circular truncated cone structure, the lower part is of a cylindrical structure, and the inner diameter of the cylinder is larger than the minor diameter of the circular truncated cone; and a pole step is formed at the joint of the upper part and the lower part.
Furthermore, the pole and the shell are made of the same material, the pole through hole comprises an upper part and a lower part which are of an integrated structure, the upper part is of an inverted circular truncated cone structure, the lower part is of a cylindrical structure, and the inner diameter of the cylinder is larger than the minor diameter of the circular truncated cone; and the upper part of the lower part is provided with a pole step, and the pole step is a two-stage step.
Furthermore, the pole through hole comprises an upper part and a lower part which are of an integrated structure, the upper part and the lower part are of cylindrical structures, the inner diameter of a cylinder at the lower part is larger than that of a cylinder at the upper part, and a pole step is formed at the joint of the upper part and the lower part; the material of utmost point post is compound material, and the material on upper portion is the same with the material of converging the dish, and the material of lower part is the same with the material of casing.
Furthermore, No. one converge the dish unsmooth in surface, No. one converge and form the multilobe shape after a plurality of welding parts of circumference equipartition on the dish, every welding part outside is equipped with a gap, No. one converge the central point of dish and have converged dish boss, and the edge is equipped with the turn-ups platform, and the direction of turn-ups platform is opposite with the direction of converging the dish boss.
Furthermore, No. two converge the dish surface unsmooth, No. two converge a plurality of elastic construction of dish circumference equipartition, be equipped with the welding boss between two adjacent elastic construction, No. two converge the dish in the middle of be equipped with central boss, and the opposite direction of the direction of center boss and welding boss.
Compared with the prior art, high energy density cylinder type battery have following advantage:
(1) high energy density cylinder type battery, adopt casing riveting utmost point post, apron and casing peripheral welding form, increased the inside usage space who rolls up the core, increased the capacity of electric core, improve the energy density of electric core.
(2) High energy density cylinder type battery, battery compact structure, energy density is high, the ability reinforce overflows, is fit for big multiplying power charge-discharge.
(3) High energy density cylinder type battery, a set and apron direct contact converge is favorable to the heat dissipation, the high-power use of the electric core of being convenient for.
Another objective of the present invention is to provide an assembling process for a high energy density cylindrical battery to simplify the process complexity and improve the working efficiency.
In order to achieve the above purpose, the technical scheme of the utility model is realized as follows:
an assembly process of a high-energy density cylindrical battery comprises the following steps:
s1, performing tab shaping on the wound winding core to enable tabs on the winding core to be tightly attached to a plane state;
s2, performing laser welding on the roll core lug and the first bus disc to form a roll core assembly;
s3, inserting the roll core assembly into the shell;
s4, integrally welding the second confluence disc and the pole or integrally welding the second confluence disc, the hollow structural member and the pole;
s5, covering the cover plate and pressing the cover plate to enable the cover plate to be pressed with the first confluence disc and the shell;
s6, performing laser peripheral welding on the cover plate and the shell, and integrally welding the shell, the cover plate and the first confluence disc;
s7, injecting liquid into the pole through hole or drying the battery cell and then injecting liquid through the pole through hole;
s8, forming, supplementing liquid after exhausting or directly covering a cap, and welding the pole and the cap together for sealing through laser welding; in addition, for the composite pole, a sealing film is placed before a cap is placed, and the cap is sealed by laser welding after the sealing film is pressed.
Compared with the prior art, the assembly process of high energy density cylinder type battery have following advantage:
(1) high energy density cylinder type battery's assembly process, utmost point post is middle step through-hole mode, utmost point post step is used for No. two discs of converging and utmost point post both integrative welding, or No. two discs of converging, utmost point post, well logical structure three integrative welding, realize electrically conductive function, than adopting the better management and control of welding quality who pierces through the welding, improved work efficiency greatly.
(2) The assembly process of high energy density cylinder type battery, converge the dish and have the cooperation structure with apron and casing, weld all around through laser, converge dish, apron and casing welding together, realize sealed and electrically conductive connection function, reduced welding simultaneously, reduce cost raises the efficiency.
Drawings
The accompanying drawings, which form a part hereof, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention without undue limitation. In the drawings:
fig. 1 is an exploded view of a high energy density cylindrical battery according to an embodiment of the present invention;
fig. 2 is a cross-sectional view of a high energy density cylindrical battery according to an embodiment of the present invention;
FIG. 3 is an enlarged view of portion A of FIG. 2;
FIG. 4 is an enlarged view of portion B of FIG. 2;
fig. 5 is a first schematic view of a housing assembly according to an embodiment of the present invention;
fig. 6 is a second schematic view of the housing assembly according to the embodiment of the present invention;
fig. 7 is a cross-sectional view of an embodiment 1 of a pole according to an embodiment of the present invention;
fig. 8 is a cross-sectional view of an embodiment 2 of a pole according to an embodiment of the present invention;
fig. 9 is a cross-sectional view of an embodiment 3 of a pole according to an embodiment of the present invention;
fig. 10 is a schematic view of a multi-tab winding core according to an embodiment of the present invention;
fig. 11 is a schematic view of a cutting and stacking tab winding core according to an embodiment of the present invention;
fig. 12 is a schematic view of a full-tab winding core according to an embodiment of the present invention;
fig. 13 is a schematic view of a first bus tray according to an embodiment of the present invention;
FIG. 14 is a sectional view taken along line A-A of FIG. 13;
fig. 15 is a first schematic view of a second junction box according to an embodiment of the present invention;
FIG. 16 is a cross-sectional view of FIG. 15;
fig. 17 is a second schematic view of a second junction tray according to an embodiment of the present invention;
fig. 18 is a schematic view of a cover plate according to an embodiment of the present invention;
fig. 19 is a schematic view of a cap according to an embodiment of the present invention.
Description of reference numerals:
1-a winding core; 2-a housing assembly; 21-a housing; 22-pole column; 221-pole through hole; 222-pole step; 23-explosion-proof scoring of the shell; 24-an insulator; 3-a confluence disc; 31-a weld; 32-a gap; 33-flanging platform; 34-a manifold plate boss; 4-second confluence plate; 41-welding a boss; 42-a central boss; 43-elastic structure; 5-cover plate; 51-cover plate explosion-proof scoring; 52-cover plate step; 6, capping; 7-hollow structural member.
Detailed Description
It should be noted that, in the present invention, the embodiments and features of the embodiments may be combined with each other without conflict.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are used merely for convenience of description and for simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention. Furthermore, the terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first," "second," etc. may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.
In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, 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 meaning of the above terms in the present invention can be understood by those of ordinary skill in the art through specific situations.
The present invention will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.
The utility model provides a high energy density cylinder type battery, as shown in fig. 1 to 19, include casing assembly 2 and include casing 21, casing 21 sets gradually insulator 24 from bottom to top, No. two converge dish 4, roll up core 1, a converge dish 3 and apron 5, insulator 24 is used for keeping apart and insulates between No. two converge dish 4 and the casing 21, one side and No. 3 welds of a converge dish of roll core 1, the opposite side and No. two 4 welds of converge dish, 4 below and the integrative welding of utmost point post 22 of No. two converge dish, utmost point post 22 top and casing 21 bottom riveting, below installation block 6, a converge 3 tops and casing 21 of dish, the integrative welding of apron 5. The battery has the advantages of compact structure, high energy density, strong overcurrent capacity, suitability for large-rate charge and discharge, simple assembly and lower manufacturing cost. Simultaneously can make the positive negative pole of battery lie in same one side through this scheme, the busbar design and the welding of the outside module or system of being convenient for. The insulator 24 is an insulating ring.
When casing 21 was the box hat, utmost point post 22's material was aluminium, and then utmost point post 22 is anodal, and No. two converge dish 4 and converge the dish for anodal, No. one converge dish 3 and converge the dish for the negative pole.
When the shell 21 is an aluminum shell and the pole 22 is made of copper, copper nickel plating, steel nickel plating or copper-aluminum composite, the pole 22 is a negative electrode, and the second confluence disc 4 is a negative confluence disc; the first bus plate 3 is a positive bus plate.
The winding core 1 is one of a full-lug winding core, a cutting and folding lug winding core or a multi-lug winding core.
As shown in fig. 5 to 9, the housing assembly 2 includes a housing 21, a pole 22 and an insulating member 24, the housing 21 is a cylindrical structure with one side open, a boss is provided at an edge of the opening of the housing 21, the insulating member 24 is placed on the inner side of the bottom of the housing 21, and the bottom of the housing 21 is riveted with the pole 22.
Referring to fig. 6, in one or more embodiments, the bottom of the housing 21 is provided with a housing explosion-proof notch 23, and the housing explosion-proof notch 23 is positioned on one side of the pole 22 to play an explosion-proof role.
The middle part of the pole 22 is provided with a pole through hole 221, and the inner wall of the pole through hole 221 is provided with a pole step 222. Wherein, the pole step 222 close to the side of the shell 21 is used for welding the second confluence disc 4 and the pole 22.
In embodiment 1, as shown in fig. 7, the pole 22 is made of aluminum, the housing 21 is a steel shell, the pole through hole 221 includes an upper portion and a lower portion which are integrally structured, the upper portion is of an inverted circular truncated cone structure, the lower portion is of a cylindrical structure, and the inner diameter of the cylinder is larger than the minor diameter of the circular truncated cone; the junction of the upper and lower portions forms a post step 222. The upper part is conveniently inserted into the second confluence disc 4 for laser welding, and the lower part is used for welding with the cap 6 and sealing after liquid injection or formation; the post step 222 serves as a limit. The structure of the upper part is convenient for the boss of the second confluence disc 4 and the hollow structural member 7 to be inserted into the pole through hole 221.
In embodiment 2, as shown in fig. 8, the post 22 is made of aluminum, the housing 21 is made of steel, the bottom of the housing 21 is provided with a housing explosion-proof notch 23, the post through hole 221 includes an upper portion and a lower portion of an integral structure, the upper portion and the lower portion are both cylindrical structures, and the inner diameter of the cylinder is larger than the minor diameter of the circular truncated cone; the upper part of the lower part is provided with a pole step 222, and the pole step 222 is a two-stage step. The upper part is conveniently inserted into the second confluence disc 4 for laser welding, and the lower part is used for welding with the cap 6 and sealing after liquid injection or formation; the post step 222 acts as a limit.
In embodiment 3, as shown in fig. 9, the material of the pole 22 is a composite material, the bottom of the housing 21 is provided with a housing explosion-proof notch 23, the pole through hole 221 includes an upper portion and a lower portion which are of an integral structure, the upper portion and the lower portion are both of a cylindrical structure, and the inner diameter of the lower portion cylinder is greater than that of the upper portion cylinder, the upper portion is conveniently inserted into the second confluence plate 4 for laser welding, the lower portion is used for welding with the cap 6, and a pole step 222 is formed at the joint of the upper portion and the lower portion; the material of the upper portion is the same as that of the bus tray 4, and the material of the lower portion is the same as that of the case 21. The lower part of the pole 22 and the shell 21 are made of the same material, so that the bus bar design and welding of a module or a system are facilitated.
The surface of the first bus plate 3 is uneven, a plurality of welding parts 31 are uniformly distributed on the first bus plate 3 in the circumferential direction to form a multi-petal shape, a gap 32 is arranged outside each welding part 31, and the gap 32 is used for penetrating electrolyte; no. 3 central point of the dish that converges has and converges dish boss 34, converge dish boss 34 and the centre bore of rolling up core 1 and match and be used for the location, the edge that No. 3 converges is equipped with turn-ups platform 33, and turn-ups platform 33's direction and the opposite direction of the dish boss 34 that converges, turn-ups platform 33 is used for cooperating with the opening of casing 21.
The welding portion 31 is formed by punching the bus bar 3, and the welding portion 31 is used for welding with a tab of the winding core. After the first bus disc 3 is welded with the winding core, the outer ring and the winding core have small mobility in the axial direction of the winding core, and the first bus disc is convenient to match with the shell 22 and the cover plate 5.
As shown in fig. 14 and 3, the cross section of the turn-up platform 33 is L-shaped or I-shaped.
No. two converge 4 unsmooth surfaces of dish, No. two converge a plurality of elastic construction 43 of 4 circumference equipartitions of dish, be equipped with welding boss 41 between two adjacent elastic construction 43, be equipped with central boss 42 in the middle of No. two dish 4 that converge, and the direction of central boss 42 and welding boss 41's opposite direction, welding boss 41 compresses tightly with rolling up a core utmost point ear and be used for the laser welding, central boss 42 can insert utmost point post through-hole 221 of utmost point post 22, and central boss 42 welds with utmost point post step 222 cooperation, central boss 42 can set trapezoidal shape in order to cooperate with utmost point post through-hole 221, is convenient for install. The resilient structure 43 is intended to take up assembly tolerances and to hold down the winding core without play during use.
In addition, considering that the thickness of the confluence disc is generally thinner, the weldability and the overcurrent capacity are lower, a hollow structural part 7 can be additionally designed to be inserted into the central boss 42, the hollow structural part 7 can be higher than the plane of the second confluence disc 4, the winding core 1 is inserted for positioning, the hollow structural part 7 is of a cylindrical or T-shaped hollow structure, and the shape of the cylindrical or T-shaped structural part can be of a trapezoidal structure in order to be matched with the pole column 22 and the second confluence disc 4.
As shown in fig. 15 and 16, in an embodiment, the elastic structure 43 is a polygonal structure with an opening on the inner side, and the upper side is a plane, the opening on the inner side allows the elastic structure 43 to have enough space during the compression process, which can effectively save space.
In another embodiment, as shown in fig. 17, the cross section of the elastic structure 43 is an S-shaped structure, the outer side is a movable side, when being squeezed, the outer side can extend outwards, both sides of the elastic structure 43 are flat, so that the elastic structure can be conveniently matched with components on both sides of the second bus disc 4, and the installation stability is ensured.
The cover plate 5 is of a disc structure, a cover plate step 52 is arranged at the edge of the cover plate, the cover plate step 52 is matched with the shell 21, and a cover plate explosion-proof notch 51 can be added in the center of the cover plate 5 as required for explosion prevention and exhaust at the bottom.
The cap 6 is a disk structure, and the assembly side can be chamfered or beveled for ease of assembly.
The utility model provides an assembly process of high energy density cylinder type battery, places the casing subassembly in advance, is about to utmost point post 22 and casing 21 riveting back, and casing 21 is inside to place insulating part 24, then carries out following step:
s1, performing tab shaping on the wound winding core 1 to enable tabs on the winding core 1 to be tightly attached to a plane state;
s2, performing laser welding on the roll core lug and the first bus disc 3 to form a roll core assembly;
s3, inserting the roll core assembly into the shell 21;
s4, laser welding the second confluence disc 4 and the pole 22 together or laser welding the second confluence disc 4, the hollow structural member 7 and the pole 22 together (at the Y position in the figure 4), so that the conductive function is realized, and the welding quality is better controlled than that of penetration welding;
s5, covering the cover plate 5 and pressing, so that the cover plate 5 is pressed with the first confluence plate 3 and the shell 22;
s6, the cover plate 5 and the shell 21 are welded by laser periphery, and the shell 21, the cover plate 5 and the first bus bar 3 are directly welded together (X in figure 3) at one time, so that the electric conduction and heat conduction functions are realized, one-time welding is saved, the efficiency is improved, and the cost is reduced;
s7, injecting liquid into the pole through hole 221 or drying the battery cell and then injecting liquid through the pole through hole 221;
s8, forming, supplementing liquid after exhausting or directly covering the cap 6, and welding the pole 22 and the cap 6 together for sealing through laser welding; in addition, for the composite pole 22, in order to prevent the electrolyte and the gas thereof from corroding the interface of the composite pole, a sealing film is placed before the cap is placed, and the cap 6 is sealed by laser welding after pressing the sealing film. The sealing film is made of plastic or rubber, such as fluororubber, PFA or PP plastic.
The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (9)
1. A high energy density cylindrical battery, characterized in that: the winding machine comprises a shell assembly, wherein an insulating piece, a second bus disc, a winding core, a first bus disc and a cover plate are sequentially arranged on a shell in the shell assembly from bottom to top, the second bus disc and the shell are insulated by the insulating piece, one side of the winding core is welded with the first bus disc, the other side of the winding core is welded with the second bus disc, a pole is integrally welded below the second bus disc, the upper part of the pole is riveted with the bottom of the shell, and a cap is arranged below the pole; the upper part of the first confluence disc is integrally welded with the shell and the cover plate.
2. The cylindrical battery of claim 1, wherein: the bottom of the shell is provided with an explosion-proof notch of the shell.
3. The high energy density cylindrical battery as defined in claim 1, wherein: the middle part of the pole is provided with a pole through hole, and the inner wall of the pole through hole is provided with a pole step.
4. The high energy density cylindrical battery as defined in claim 3, wherein: the pole through hole comprises an upper part and a lower part which are of an integrated structure, the upper part is of an inverted frustum structure, the lower part is of a cylindrical structure, and the inner diameter of the cylinder is larger than the minor diameter of the truncated frustum; and a pole step is formed at the joint of the upper part and the lower part.
5. The cylindrical battery of claim 3, wherein: the pole through hole comprises an upper part and a lower part which are of an integrated structure, the upper part is of an inverted frustum structure, the lower part is of a cylindrical structure, and the inner diameter of the cylinder is larger than the minor diameter of the truncated frustum; and the upper part of the lower part is provided with a pole step, and the pole step is a two-stage step.
6. The high energy density cylindrical battery as defined in claim 3, wherein: the pole through hole comprises an upper part and a lower part which are of an integrated structure, the upper part and the lower part are of cylindrical structures, the inner diameter of a cylinder at the lower part is larger than that of a cylinder at the upper part, and a pole step is formed at the joint of the upper part and the lower part; the material of utmost point post is compound material, and the material on upper portion is the same with the material of converging the dish, and the material of lower part is the same with the material of casing.
7. The high energy density cylindrical battery as defined in claim 1, wherein: the surface of the first collecting tray is uneven, a plurality of welding portions are circumferentially and evenly distributed on the first collecting tray to form a multi-petal shape, a gap is formed in the outer side of each welding portion, a collecting tray boss is arranged at the central position of the first collecting tray, a flanging platform is arranged at the edge of the first collecting tray, and the direction of the flanging platform is opposite to that of the collecting tray boss.
8. The high energy density cylindrical battery as defined in claim 1, wherein: the surface of the second bus-collecting disc is uneven, a plurality of elastic structures are uniformly distributed on the second bus-collecting disc in the circumferential direction, a welding boss is arranged between every two adjacent elastic structures, a central boss is arranged in the middle of the second bus-collecting disc, and the direction of the central boss is opposite to that of the welding boss.
9. The high energy density cylindrical battery as defined in claim 1, wherein: still include the cavity structure, the both ends of cavity structure insert respectively in central boss and the book core.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220697407.4U CN217239703U (en) | 2022-03-28 | 2022-03-28 | High energy density cylinder type battery |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220697407.4U CN217239703U (en) | 2022-03-28 | 2022-03-28 | High energy density cylinder type battery |
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| CN217239703U true CN217239703U (en) | 2022-08-19 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114628866A (en) * | 2022-03-28 | 2022-06-14 | 蓝京新能源(嘉兴)有限公司 | High-energy-density cylindrical battery and assembly process thereof |
| CN115966820A (en) * | 2023-03-16 | 2023-04-14 | 宁德新能源科技有限公司 | Battery and electric equipment |
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2022
- 2022-03-28 CN CN202220697407.4U patent/CN217239703U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114628866A (en) * | 2022-03-28 | 2022-06-14 | 蓝京新能源(嘉兴)有限公司 | High-energy-density cylindrical battery and assembly process thereof |
| CN115966820A (en) * | 2023-03-16 | 2023-04-14 | 宁德新能源科技有限公司 | Battery and electric equipment |
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