CN115775940A - Battery cover plate assembly, battery preparation method and battery - Google Patents
Battery cover plate assembly, battery preparation method and battery Download PDFInfo
- Publication number
- CN115775940A CN115775940A CN202111050966.2A CN202111050966A CN115775940A CN 115775940 A CN115775940 A CN 115775940A CN 202111050966 A CN202111050966 A CN 202111050966A CN 115775940 A CN115775940 A CN 115775940A
- Authority
- CN
- China
- Prior art keywords
- terminal
- pole
- battery
- welding
- cover plate
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000002360 preparation method Methods 0.000 title claims abstract description 16
- 238000003466 welding Methods 0.000 claims abstract description 142
- 238000000034 method Methods 0.000 claims description 30
- 238000004519 manufacturing process Methods 0.000 claims description 20
- 230000000149 penetrating effect Effects 0.000 claims description 8
- 239000012212 insulator Substances 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 3
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 230000006978 adaptation Effects 0.000 description 1
- 238000003487 electrochemical reaction Methods 0.000 description 1
- 239000003792 electrolyte Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 229910000679 solder Inorganic materials 0.000 description 1
- 238000005476 soldering Methods 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
Images
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
Landscapes
- Connection Of Batteries Or Terminals (AREA)
Abstract
The invention relates to the technical field of batteries, and provides a battery cover plate assembly, a battery preparation method and a battery. The preparation method of the battery cover plate component comprises the following steps: providing a cover plate, a pole and a terminal, wherein a through hole is formed in the cover plate; one end of the pole column penetrates through the through hole, and the other end of the pole column is in contact with the terminal; adopt resistance welding to weld utmost point post and terminal, not only the equipment is simple, and can guarantee the connection stability of utmost point post and terminal.
Description
Technical Field
The invention relates to the technical field of batteries, in particular to a battery cover plate assembly, a battery preparation method and a battery.
Background
The post component and the cover plate in the related technology are connected and mainly assembled in a press riveting assembly mode, the post penetrates through holes of the terminal and the cover plate, the post, the terminal, the cover plate and other components are assembled together through a press riveting needle, the phenomenon of untight press riveting exists between the post and the terminal, the post and the terminal need to be welded and sealed subsequently, and the assembly process is complex.
Disclosure of Invention
The invention provides a battery cover plate assembly, a preparation method of a battery and the battery, which aim to improve the assembly efficiency of the battery cover plate assembly.
According to a first aspect of the present invention, there is provided a method of manufacturing a battery cover plate assembly, comprising:
providing a cover plate, a pole and a terminal, wherein a through hole is formed in the cover plate;
one end of the pole column penetrates through the through hole, and the other end of the pole column is in contact with the terminal;
and welding the pole and the terminal by adopting resistance welding.
According to the preparation method of the battery cover plate assembly, the pole is arranged on the through hole of the cover plate in a penetrating mode, and the welding of the pole and the terminal is completed through resistance welding, so that the assembly is simple, and the connection stability of the pole and the terminal can be guaranteed.
According to a second aspect of the present invention, there is provided a method of manufacturing a battery, comprising:
providing a cover plate, a pole, a terminal and a battery cell, wherein a through hole is formed in the cover plate;
one end of the pole column penetrates through the through hole, and the other end of the pole column is in contact with the terminal;
and welding the pole and the terminal by adopting resistance welding.
According to the preparation method of the battery provided by the embodiment of the invention, the pole is arranged on the through hole of the cover plate in a penetrating manner, and the welding of the pole and the terminal is completed by adopting resistance welding, so that the assembly is simple, and the connection stability of the pole and the terminal can be ensured.
According to a third aspect of the present invention, there is provided a battery comprising the battery produced by the above-described method for producing a battery.
The battery provided by the embodiment of the invention is obtained by the preparation method of the battery, the pole column is arranged on the through hole of the cover plate in a penetrating manner, and the welding of the pole column and the terminal is completed by adopting resistance welding, so that the assembly is simple, and the connection stability of the pole column and the terminal can be ensured.
According to a fourth aspect of the present invention, there is provided a battery comprising:
the cover plate is provided with a through hole;
the pole component comprises a pole and a terminal, and the pole is arranged in the through hole in a penetrating manner;
the battery comprises a battery cell, wherein a tab is arranged on the battery cell, one end of a pole is welded with the tab, and the other end of the pole is welded with a terminal;
wherein, utmost point post, terminal and utmost point ear are welded in step.
The battery provided by the embodiment of the invention comprises the cover plate, the pole component and the battery cell, and the pole, the terminal and the pole lug are synchronously welded, so that the connection stability of the pole, the terminal and the pole lug can be ensured, and the battery can be assembled.
Drawings
For a better understanding of the present disclosure, reference may be made to the embodiments illustrated in the following drawings. The components in the drawings are not necessarily to scale, and related elements may be omitted so as to emphasize and clearly illustrate the technical features of the present disclosure. In addition, the relevant elements or components may be arranged differently as is known in the art. Further, in the drawings, like reference characters designate the same or similar parts throughout the several views. Wherein:
fig. 1 is a schematic flow diagram illustrating a method of manufacturing a battery cover plate assembly according to an exemplary embodiment;
FIG. 2 is a schematic flow diagram illustrating a method of making a battery according to an exemplary embodiment;
FIG. 3 is a schematic diagram illustrating a method of fabricating a battery according to an exemplary embodiment;
fig. 4 is a partial structural schematic view of a battery according to the first exemplary embodiment;
fig. 5 is a schematic cross-sectional structure of a battery according to a first exemplary embodiment;
fig. 6 is a schematic view showing a partial structure of a battery according to a second exemplary embodiment;
fig. 7 is a schematic cross-sectional structure of a battery according to a second exemplary embodiment;
fig. 8 is a partial structural view of a battery according to a third exemplary embodiment;
fig. 9 is a schematic view showing a partial structure of a battery according to a fourth exemplary embodiment;
fig. 10 is a schematic sectional structure view showing a battery according to a fourth exemplary embodiment;
fig. 11 is a partial structural view showing a battery according to the fifth exemplary embodiment.
The reference numerals are illustrated below:
1. a first welding electrode; 2. a second welding electrode;
10. a cover plate; 11. a through hole; 20. a pole assembly; 21. a pole column; 211. a limiting part; 22. a terminal; 221. a groove; 23. a bus bar; 30. an electric core; 31. a tab; 40. a first insulating member; 41. a second insulating member; 42. a third insulating member; 50. and (6) a switching piece.
Detailed Description
The technical solutions in the exemplary embodiments of the present disclosure will be clearly and completely described below with reference to the drawings in the exemplary embodiments of the present disclosure. The example embodiments described herein are for illustrative purposes only and are not intended to limit the scope of the present disclosure, so it should be understood that various modifications and changes may be made to the example embodiments without departing from the scope of the present disclosure.
In the description of the present disclosure, unless explicitly specified or limited otherwise, the terms "first", "second", and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance; the term "plurality" means two or more; the term "and/or" includes any and all combinations of one or more of the associated listed items. In particular, references to "the" object or "an" object are also intended to mean one of possibly multiple such objects.
The terms "connected," "secured," and the like are to be construed broadly and encompass, for example, a fixed connection, a removable connection, an integral connection, an electrical connection, or a signal connection; "connected" may be directly connected or indirectly connected through an intermediate. The specific meaning of the above terms in the present disclosure can be understood by those skilled in the art as the case may be.
Further, in the description of the present disclosure, it is to be understood that the directional words "upper", "lower", "inner", "outer", etc., which are described in the exemplary embodiments of the present disclosure, are described at the angles shown in the drawings, and should not be construed as limiting the exemplary embodiments of the present disclosure. It will also be understood that, in the context of a connection between one element or feature and another element(s), "on," "under," or "inside" or "outside," it can be directly connected to the other element(s) "on," "under" or "inside" or "outside," or indirectly connected to the other element(s) "on," "under" or "inside" or "outside" through intervening elements.
An embodiment of the present invention provides a method for manufacturing a battery cover plate assembly, referring to fig. 1, the method for manufacturing a battery cover plate assembly includes:
s101, providing a cover plate 10, a pole 21 and a terminal 22, wherein a through hole 11 is formed in the cover plate 10;
s103, one end of the pole 21 is inserted into the through hole 11, and the other end of the pole 21 is in contact with the terminal 22;
s105, the pole 21 and the terminal 22 are welded by resistance welding.
According to the preparation method of the battery cover plate assembly, the pole 21 is arranged on the through hole 11 of the cover plate 10 in the penetrating mode, and the welding of the pole 21 and the terminal 22 is completed through resistance welding, so that the assembly is simple, and the connection stability of the pole 21 and the terminal 22 can be guaranteed.
It should be noted that, in the related art, when the battery cover plate assembly is assembled, the connection between the terminal post 21 and the terminal 22 is mainly completed by riveting, and in order to ensure the sealing performance of the connection, butt welding is performed between the hole walls of the terminal post 21 and the terminal 22, the assembly process of the battery cover plate assembly is complicated. In the present embodiment, the terminal post 21 and the terminal 22 are connected by resistance welding, which not only simplifies the assembly process, but also ensures the connection stability of the terminal post 21 and the terminal 22.
Specifically, the first welding electrode 1 is located on one side of the terminal 22 away from the terminal 21, the second welding electrode 2 is located on one side of the terminal 21 away from the terminal 22, and current is applied to the first welding electrode 1 and the second welding electrode 2, so that the terminal 21 and the terminal 22 are welded.
In one embodiment, one end of the pole 21 may directly contact the tab 31 after passing through the through hole 11, or one end of the pole 21 may directly contact the interposer 50 after passing through the through hole 11. And the other end of the pole 21 contacts with the terminal 22, at this time, the surface of the terminal 22 contacting with the pole 21 can be a plane, that is, the pole 21 can be directly butted with the terminal 22, and the terminal 22 has no limit structure for the pole 21, so that the direct butting of the pole 21 and the terminal 22 is realized through resistance welding.
In an embodiment, the groove 221 is formed in the terminal 22, and the other end of the post 21 is located in the groove 221, that is, the groove 221 of the terminal 22 can limit the post 21, so that it is ensured that the welding position between the terminal 22 and the post 21 is not deviated, the welding between the post 21 and the terminal 22 can be conveniently completed, and extra tooling is not needed for positioning.
Be formed with recess 221 on the terminal 22, the other end of utmost point post 21 is located recess 221, and first welding electrode 1 is located the one side that utmost point post 21 was kept away from to terminal 22, second welding electrode 2 is located the one side that utmost point post 21 kept away from terminal 22, the distance between the surface that utmost point post 21 was kept away from to terminal 22 and utmost point post 21 reduces promptly, thereby can make first welding electrode 1 and second welding electrode 2 adopt the required energy of welding just can guarantee between utmost point post 21 and the terminal 22 of relatively less electric current, not only can reduce the welding energy demand, and can avoid the energy too big influence that causes other positions, with this welding quality who improves utmost point post 21 and terminal 22.
In one embodiment, the pole post 21 and the terminal 22 are welded at least twice, thereby ensuring the welding stability of the pole post 21 and the terminal 22. The multiple welds of the post 21 and the terminal 22 form multiple welds that may be spaced apart or may be connected, in some embodiments, without precluding at least a portion of the multiple welds from overlapping.
In one embodiment, the terminal 22 is formed with the bus bar 23 integrally formed therewith, i.e., after the welding of the post 21 and the terminal 22 is completed, the secondary connection of the bus bar 23 is not performed, thereby reducing the assembly process of the battery. In some embodiments, the terminal 22 is formed with a bus bar 23 welded thereto, i.e., the terminal 22 and the bus bar 23 are welded together by resistance welding while the pole 21 and the terminal 22 are welded together.
In one embodiment, the method for preparing the battery cover plate assembly further comprises: before the terminal post 21 and the terminal 22 are welded by resistance welding, the first insulating member 40 is arranged between the terminal 22 and the cover plate 10, and the third insulating member 42 is arranged between the terminal post 21 and the through hole 11, so that the position limitation of the first insulating member 40 and the third insulating member 42 is realized after the welding of the terminal post 21 and the terminal 22 is completed. Alternatively, before the terminal post 21 and the terminal 22 are welded by resistance welding, the second insulating member 41 may be provided on the side of the cap plate 10 away from the first insulating member 40, a portion of the third insulating member 42 may be located inside the first insulating member 40 and the second insulating member 41, and a portion of the terminal post 21 may be located inside the first insulating member 40 and the second insulating member 41.
The embodiment of the invention also provides a battery cover plate assembly, which comprises the battery cover plate assembly prepared by the preparation method of the battery cover plate assembly.
According to the battery cover plate assembly disclosed by the embodiment of the invention, the welding of the pole 21 and the terminal 22 is completed by adopting resistance welding, so that the assembly is simple, the connection stability of the pole 21 and the terminal 22 can be ensured, and the battery cover plate assembly with a stable structure is formed.
An embodiment of the present invention further provides a battery cover plate assembly, as shown in fig. 4 to 11, the battery cover plate assembly includes a cover plate 10, where the cover plate 10 is provided with a through hole 11; utmost point post subassembly 20, utmost point post subassembly 20 include utmost point post 21 and terminal 22, and utmost point post 21 wears to establish in through-hole 11, and utmost point post 21 and terminal 22 only adopt resistance to weld to realize fixed connection.
The battery cover plate component comprises the cover plate 10 and the pole assembly 20, and the pole 21 and the terminal 22 of the pole assembly 20 are fixedly connected by adopting resistance welding, so that the welding stability of the pole 21 and the terminal 22 can be ensured, and the assembly process of the battery cover plate component can be reduced.
In one embodiment, there are at least two solder marks between the post 21 and the terminal 22, so as to ensure the soldering stability of the post 21 and the terminal 22.
In one embodiment, the terminal 22 is provided with a groove 221, and one end of the pole 21 is located in the groove 221.
An embodiment of the present invention further provides a method for manufacturing a battery, referring to fig. 2, the method for manufacturing a battery includes:
s201, providing a cover plate 10, a pole 21, a terminal 22 and a battery cell 30, wherein a through hole 11 is formed in the cover plate 10;
s203, one end of the pole 21 is inserted into the through hole 11, and the other end of the pole 21 is contacted with the terminal 22;
in S205, the pole 21 and the terminal 22 are welded by resistance welding.
According to the preparation method of the battery, the pole 21 is arranged on the through hole 11 of the cover plate 10 in a penetrating mode, and the pole 21 and the terminal 22 are welded through resistance welding, so that the assembly is simple, and the connection stability of the pole 21 and the terminal 22 can be guaranteed.
It should be noted that the battery cell 30 may be disposed on the side of the cover plate 10 away from the terminal 22 when the pole post 21 and the terminal 22 are welded, or the battery cell 30 may be disposed on the side of the cover plate 10 away from the terminal 22 after the welding of the pole post 21 and the terminal 22 is completed.
In one embodiment, the battery cell 30 is formed with a tab 31, and one end of the pole 21 passes through the through hole 11 and then contacts with the tab 31; the welding of the pole 21 and the tab 31 is completed at the same time as the welding of the pole 21 and the terminal 22 by resistance welding, that is, the synchronous welding of the pole 21, the terminal 22 and the tab 31 is performed, so that the welding process is reduced, and the assembly process of the battery is simplified.
Specifically, as shown in fig. 3, the first welding electrode 1 is located on one side of the terminal 22 away from the pole 21, the second welding electrode 2 is located on one side of the tab 31 away from the terminal 22, and current is applied to the first welding electrode 1 and the second welding electrode 2 to weld the pole 21, the terminal 22 and the tab 31, that is, a welding mark is formed between the pole 21 and the terminal 22, and a welding mark is formed between the pole 21 and the tab 31, so that the integrated assembly of the pole 21, the terminal 22 and the tab 31 is realized, and the assembly process is greatly simplified.
In one embodiment, the battery cell 30 is formed with a tab 31, one end of the pole 21 passes through the through hole 11 and then contacts with the tab 31, and the method for manufacturing the battery further includes: after the terminal 21 and the terminal 22 are welded by resistance welding, the terminal 21 and the tab 31 are welded, that is, after the terminal 21 and the terminal 22 are welded, the terminal 21 and the tab 31 are welded, so that the welding energy requirement can be properly reduced.
Specifically, after the terminal 21 and the terminal 22 are welded by resistance welding, the tab 31 of the battery cell 30 is reliably contacted with the terminal 21, and then welding can be performed by resistance welding, that is, the first welding electrode 1 is located on one side of the terminal 22 away from the terminal 21, the second welding electrode 2 is located on one side of the tab 31 away from the terminal 22, and current is applied to the first welding electrode 1 and the second welding electrode 2, so that the tab 31 is welded with the terminal 21, and in fact, secondary welding is performed on the terminal 21 and the terminal 22 in the process. Alternatively, the tab 31 and the post 21 may be welded by laser welding, and the welding mark between the post 21 and the terminal 22 may not be affected when the energy is relatively small.
In one embodiment, the battery cell 30 is formed with a tab 31, and the method for manufacturing the battery further includes: providing an interposer 50; welding the tab 31 and the adapter plate 50; one end of the pole 21 welded with the terminal 22 passes through the through hole 11 and then contacts with the adaptor sheet 50 welded with the tab 31, and the adaptor sheet 50 and the pole 21 are welded. The arrangement of the adapter sheet 50 can facilitate the adapter of the tab 31 and the post 21, and the relative positions of the tab 31 and the post 21 can be adjusted adaptively, so as to meet the overall layout of the battery.
Specifically, the welding of the terminal 21 and the terminal 22, and the welding sequence of the tab 31 and the adapter plate 50 are not limited, the welding of the tab 31 and the adapter plate 50 may adopt at least one of ultrasonic welding, laser welding and resistance welding, and the welding is completed at the terminal 21 and the terminal 22, after the welding of the tab 31 and the adapter plate 50 is completed, the welding of the adapter plate 50 and the terminal 21 may be realized by adopting resistance welding, that is, the first welding electrode 1 is located at one side of the terminal 22 far away from the terminal 21, the second welding electrode 2 is located at one side of the tab 31 far away from the terminal 22, current is passed through the first welding electrode 1 and the second welding electrode 2, and of course, the welding of the adapter plate 50 and the terminal 21 may also be completed by adopting laser welding.
In one embodiment, the battery cell 30 is formed with tabs 31, and the method for manufacturing the battery further includes: providing an interposer 50; one end of the pole 21 passes through the through hole 11 and then contacts with the adapter sheet 50, the tab 31 is located on one side of the adapter sheet 50 far away from the pole 21, the welding of the pole 21 and the adapter sheet 50 is completed while the pole 21 and the terminal 22 are welded by resistance welding, and the welding of the adapter sheet 50 and the tab 31 is completed, namely the pole 21, the terminal 22, the tab 31 and the adapter sheet 50 are synchronously welded, so that the welding process is reduced, and the assembly process of the battery is simplified.
Specifically, first welding electrode 1 is located the terminal 22 and keeps away from one side of utmost point post 21, second welding electrode 2 is located utmost point ear 31 and keeps away from one side of terminal 22, thereby to first welding electrode 1 and the welding electrode 2 circular telegram of second realize utmost point post 21, terminal 22, utmost point ear 31 and switching piece 50's welding, be formed with the welding seal between utmost point post 21 and the terminal 22 promptly, and be formed with the welding seal between utmost point post 21 and the switching piece 50, be formed with the welding seal between switching piece 50 and the utmost point ear 31, utmost point post 21 has been realized, terminal 22, utmost point ear 31 and the integrative assembly of switching piece 50, the assembly process has greatly been simplified.
In one embodiment, the battery cell 30 is formed with a tab 31, and the method for manufacturing the battery further includes: providing an adapter plate 50, enabling one end of the pole 21 to pass through the through hole 11 and then to be in contact with the adapter plate 50, and welding the pole 21 and the terminal 22 by resistance welding while completing welding of the pole 21 and the adapter plate 50; the adaptor sheet 50 welded with the pole 21 is contacted with the tab 31, and the adaptor sheet 50 and the tab 31 are welded, namely the pole 21, the terminal 22 and the adaptor sheet 50 are synchronously welded, and after the welding is finished, the adaptor sheet 50 and the tab 31 are welded.
Specifically, after the terminal 21, the terminal 22 and the interposer 50 are welded by resistance welding, the tab 31 of the battery cell 30 is reliably contacted with the interposer 50, and then resistance welding can be performed, that is, the first welding electrode 1 is located on one side of the terminal 22 away from the terminal 21, the second welding electrode 2 is located on one side of the tab 31 away from the terminal 22, and current is applied to the first welding electrode 1 and the second welding electrode 2, so as to weld the tab 31 and the interposer 50. Alternatively, the tab 31 and the interposer 50 may be welded by laser welding.
In one embodiment, the pole post 21 and the terminal 22 are welded at least twice, thereby ensuring the welding stability of the pole post 21 and the terminal 22. The multiple welds of the post 21 and the terminal 22 form multiple welds that may be spaced apart or may be connected, in some embodiments, without precluding at least a portion of the multiple welds from overlapping.
In the above embodiments, the welding of the pole 21, the terminal 22, the tab 31 and the adaptor piece 50 may be performed at least twice, so as to ensure the reliability of the welding connection.
In one embodiment, the groove 221 is formed in the terminal 22, the other end of the pole 21 is located in the groove 221, that is, the groove 221 of the terminal 22 can limit the pole 21, so that the welding position of the terminal 22 and the pole 21 cannot deviate, the welding of the pole 21 and the terminal 22 can be conveniently completed, excessive tools are not needed to be additionally used for positioning, and the requirement for welding energy can be properly reduced.
In one embodiment, the bus bar 23 is integrally formed on the terminal 22, that is, the bus bar 23 is integrally formed on the terminal 22, so that the connection process of the bus bar 23 and the terminal 22 can be reduced, and the assembly efficiency of the battery can be improved.
In some embodiments, the bus bar 23 is formed on the terminal 22, the terminal 22 and the bus bar 23 are of two independent structures, the terminal 22 and the bus bar 23 can be welded, and further, the terminal 22 and the bus bar 23 can be welded while the pole 21 and the terminal 22 are welded by resistance welding.
It should be noted that, when the terminal 22 and the bus bar 23 are two independent structures, the groove 221 formed on the terminal 22 may be a through hole, and a port of the through hole is stopped by the bus bar 23 at this time, so that the post 21 can still be reliably limited in the groove 221, that is, the terminal 22 and the bus bar 23 together form the groove 221.
In one embodiment, the method for preparing a battery further comprises: before welding, a first insulating member 40 is disposed between the terminal 22 and the cap plate 10; and/or a second insulating part 41 is arranged between the battery cell 30 and the cover plate 10; and/or a third insulating piece 42 is arranged between the pole 21 and the through hole 11. The arrangement of the first insulating part 40, the second insulating part 41 and the third insulating part 42 can realize reliable sealing among the parts on the premise of avoiding electric connection among the parts, and effective limiting of the first insulating part 40, the second insulating part 41 and the third insulating part 42 is realized after welding.
In one embodiment, a limiting portion 211 is formed on the pole 21, and the limiting portion 211 is located between the cover plate 10 and the battery core 30, so as to achieve effective limiting of the pole 21.
Specifically, the stopper portion 211 may be sandwiched between the third insulating member 42 and the battery cell 30, that is, the stopper portion 211 may be sandwiched between the third insulating member 42 and the tab 31 on the battery cell 30. When the adapter sheet 50 is provided, the limiting portion 211 can be clamped between the third insulating member 42 and the adapter sheet 50, so that the contact surface between the adapter sheet 50 and the pole 21 can be increased, and effective limiting can be realized.
The embodiment of the invention also provides a battery which comprises the battery prepared by the preparation method of the battery.
The battery of one embodiment of the invention is obtained by a battery preparation method, the pole 21 is arranged on the through hole 11 of the cover plate 10 in a penetrating manner, and the welding of the pole 21 and the terminal 22 is completed by adopting resistance welding, so that the assembly is simple, and the connection stability of the pole 21 and the terminal 22 can be ensured.
An embodiment of the present invention further provides a battery, please refer to fig. 4 to 11, where the battery includes: the cover plate 10 is provided with a through hole 11; the pole assembly 20, the pole assembly 20 includes the pole 21 and terminal 22, the pole 21 is worn and set up in the through hole 11; the battery cell 30 is provided with a tab 31, one end of the pole 21 is welded with the tab 31, and the other end of the pole 21 is welded with the terminal 22; the pole 21, the terminal 22 and the tab 31 are welded synchronously.
The battery of one embodiment of the invention comprises a cover plate 10, a pole assembly 20 and a battery core 30, and the pole 21, the terminal 22 and the tab 31 are synchronously welded, so that the connection stability of the pole 21, the terminal 22 and the tab 31 can be ensured, and the battery can be assembled.
The battery includes a cell and an electrolyte, and a minimum unit capable of performing an electrochemical reaction such as charge/discharge. The cell refers to a unit formed by winding or laminating a stack including a first electrode, a separator, and a second electrode. When the first electrode is a positive electrode, the second electrode is a negative electrode. Wherein the polarities of the first and second electrodes may be interchanged. The cover plate may be a flat plate or a case including an accommodating space.
In one embodiment, as shown in fig. 4 to 11, the battery further includes: the adaptor sheet 50 is positioned between the pole 21 and the tab 31, and the pole 21, the terminal 22, the tab 31 and the adaptor sheet 50 are synchronously welded.
The welding may be resistance welding.
In one embodiment, the battery further comprises: and a bus bar 23, the bus bar 23 being integrally formed with the terminal 22 as shown in fig. 9 to 11. In some embodiments, the bus bar 23 and the terminal 22 are separate structures, and the bus bar 23 is connected to the terminal 22, as shown in fig. 6 to 8.
It should be noted that the bus bar 23 may be L-shaped, and the bus bar 23 may be bent toward one side of the battery cell 30, as shown in fig. 6 and 9. The bus bar 23 may also be bent toward the side away from the battery cells 30, as shown in fig. 8 and 11.
In one embodiment, as shown in fig. 4 to 11, the battery further includes: a first insulating member 40, a second insulating member 41, and a third insulating member 42, the first insulating member 40 being provided between the terminal 22 and the cap plate 10; a second insulating part 41 is arranged between the battery cell 30 and the cover plate 10; a third insulating member 42 is provided between the post 21 and the through hole 11.
In one embodiment, as shown in fig. 5, a limiting portion 211 is formed on the pole 21, and the limiting portion 211 is located between the cover plate 10 and the battery core 30, so as to achieve effective limiting of the pole 21.
Specifically, the stopper portion 211 may be clamped between the third insulating member 42 and the battery cell 30, that is, the stopper portion 211 may be clamped between the third insulating member 42 and the tab 31 on the battery cell 30. When the adapter sheet 50 is provided, the limiting portion 211 can be clamped between the third insulating member 42 and the adapter sheet 50, so that the contact surface between the adapter sheet 50 and the pole 21 can be increased, and effective limiting can be realized.
In one embodiment, as shown in fig. 5, 7 and 10, the terminal 22 is provided with a groove 221, and one end of the pole 21 is located in the groove 221.
In some embodiments, the terminal 22 may have at least two posts 21 disposed thereon.
It should be noted that, in the present embodiment, the structure related to the battery may further refer to the structure related to the above-mentioned battery preparation method, and details are not described here.
The battery provided by the invention utilizes the instantaneous large current generated in the resistance welding process to weld the lead-out lugs, the pole columns and the terminals of the battery core, the welding marks are formed between the lugs and the pole columns, the welding marks are formed between the pole columns and the terminals, and the integral assembly of the battery cover plate assembly is realized. The first insulating part, the second insulating part and the third insulating part are assembled together through welding. The adapter plate can be arranged between the pole and the pole lug, so that the risk of welding through under the high-power condition of the pole lug can be avoided. In addition, the terminal and the bus bar can be made into an integral structure, so that poor welding of the bus bar and the pole assembly caused by subsequent welding is avoided.
Other embodiments of the disclosure will be apparent to those skilled in the art from consideration of the specification and practice of the invention disclosed herein. This disclosure is intended to cover any variations, uses, or adaptations of the invention following, in general, the principles of the disclosure and including such departures from the present disclosure as come within known or customary practice within the art to which the disclosure pertains. It is intended that the specification and example embodiments be considered as exemplary only, with a true scope and spirit of the disclosure being indicated by the following claims.
It will be understood that the present disclosure is not limited to the precise arrangements described above and shown in the drawings and that various modifications and changes may be made without departing from the scope thereof. The scope of the present disclosure is limited only by the appended claims.
Claims (12)
1. A method for preparing a battery cover plate component is characterized by comprising the following steps:
providing a cover plate (10), a pole post (21) and a terminal (22), wherein a through hole (11) is formed in the cover plate (10);
passing one end of the post (21) through the through hole (11) and bringing the other end of the post (21) into contact with the terminal (22);
the pole (21) and the terminal (22) are welded by resistance welding.
2. The method for preparing a battery cover plate assembly according to claim 1, wherein a groove (221) is formed on the terminal (22), and the other end of the pole (21) is located in the groove (221).
3. A method of making a battery, comprising:
providing a cover plate (10), a pole (21), a terminal (22) and a battery cell (30), wherein a through hole (11) is formed in the cover plate (10);
passing one end of the post (21) through the through hole (11) and bringing the other end of the post (21) into contact with the terminal (22);
the pole (21) and the terminal (22) are welded by resistance welding.
4. The battery preparation method according to claim 3, wherein a tab (31) is formed on the battery core (30), and one end of the tab (21) passes through the through hole (11) and then contacts with the tab (31);
and welding the pole (21) and the tab (31) is completed while welding the pole (21) and the terminal (22) by resistance welding.
5. The method for manufacturing a battery according to claim 3, wherein the battery cell (30) is formed with a tab (31), and further comprises:
providing an interposer (50);
wherein, the one end of utmost point post (21) is passed behind through-hole (11) with switching piece (50) contact, just utmost point ear (31) are located switching piece (50) are kept away from one side of utmost point post (21), adopt resistance welding to accomplish when utmost point post (21) with terminal (22) weld utmost point post (21) with the welding of switching piece (50), and switching piece (50) with the welding of utmost point ear (31).
6. The method for manufacturing a battery according to claim 3, wherein the battery cell (30) is formed with a tab (31), and further comprises:
providing an adapter sheet (50), enabling one end of the pole (21) to penetrate through the through hole (11) and then to be in contact with the adapter sheet (50), and welding the pole (21) and the terminal (22) by adopting resistance welding while finishing welding of the pole (21) and the adapter sheet (50);
and (3) contacting the adapter sheet (50) welded with the pole (21) with the pole lug (31), and welding the adapter sheet (50) and the pole lug (31).
7. The method of manufacturing a battery according to any one of claims 3 to 6, characterized in that the terminal post (21) and the terminal (22) are welded at least twice.
8. The method of producing a battery according to any one of claims 3 to 6, wherein the terminal (22) is provided with an integrally formed bus bar (23).
9. The method according to any one of claims 3 to 6, wherein a stopper portion (211) is formed on the electrode post (21), and the stopper portion (211) is located between the cover plate (10) and the cell (30).
10. The method for producing a battery according to any one of claims 3 to 6, further comprising:
before the welding, the welding is carried out,
providing a first insulator (40) between the terminal (22) and the cap plate (10); and/or the presence of a gas in the gas,
arranging a second insulating part (41) between the battery cell (30) and the cover plate (10); and/or the presence of a gas in the gas,
a third insulating member (42) is provided between the pole (21) and the through hole (11).
11. A battery comprising the battery produced by the method for producing a battery according to any one of claims 3 to 10.
12. A battery, comprising:
the cover plate (10), wherein a through hole (11) is formed in the cover plate (10);
the terminal post assembly (20), the terminal post assembly (20) comprises a terminal post (21) and a terminal (22), and the terminal post (21) is arranged in the through hole (11) in a penetrating mode;
the battery comprises a battery cell (30), wherein a tab (31) is arranged on the battery cell (30), one end of the pole (21) is welded with the tab (31), and the other end of the pole (21) is welded with the terminal (22);
wherein the pole (21), the terminal (22) and the tab (31) are welded synchronously.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111050966.2A CN115775940B (en) | 2021-09-08 | Battery cover plate assembly, battery preparation method and battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111050966.2A CN115775940B (en) | 2021-09-08 | Battery cover plate assembly, battery preparation method and battery |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN115775940A true CN115775940A (en) | 2023-03-10 |
| CN115775940B CN115775940B (en) | 2024-10-25 |
Family
ID=
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102034954A (en) * | 2009-10-01 | 2011-04-27 | Sb锂摩托有限公司 | Rechargeable battery and battery module |
| EP2500964A2 (en) * | 2011-03-18 | 2012-09-19 | SB LiMotive Co., Ltd. | Secondary battery and secondary battery pack |
| CN102779967A (en) * | 2011-05-10 | 2012-11-14 | 通用汽车环球科技运作有限责任公司 | Battery cell with integrated busbar |
| CN107039678A (en) * | 2015-11-24 | 2017-08-11 | 三星Sdi株式会社 | Secondary cell |
| CN207818742U (en) * | 2018-01-11 | 2018-09-04 | 宁德时代新能源科技股份有限公司 | Battery cap component, secondary cell and battery modules |
| CN209200018U (en) * | 2018-12-05 | 2019-08-02 | 宁德时代新能源科技股份有限公司 | Secondary cell and battery modules |
| CN111834555A (en) * | 2019-04-18 | 2020-10-27 | 三星Sdi株式会社 | Secondary battery |
| CN113078396A (en) * | 2021-03-23 | 2021-07-06 | 凯博能源科技有限公司 | Battery cover assembly, battery and manufacturing method of battery cover assembly |
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102034954A (en) * | 2009-10-01 | 2011-04-27 | Sb锂摩托有限公司 | Rechargeable battery and battery module |
| EP2500964A2 (en) * | 2011-03-18 | 2012-09-19 | SB LiMotive Co., Ltd. | Secondary battery and secondary battery pack |
| CN102779967A (en) * | 2011-05-10 | 2012-11-14 | 通用汽车环球科技运作有限责任公司 | Battery cell with integrated busbar |
| CN107039678A (en) * | 2015-11-24 | 2017-08-11 | 三星Sdi株式会社 | Secondary cell |
| CN207818742U (en) * | 2018-01-11 | 2018-09-04 | 宁德时代新能源科技股份有限公司 | Battery cap component, secondary cell and battery modules |
| CN209200018U (en) * | 2018-12-05 | 2019-08-02 | 宁德时代新能源科技股份有限公司 | Secondary cell and battery modules |
| CN111834555A (en) * | 2019-04-18 | 2020-10-27 | 三星Sdi株式会社 | Secondary battery |
| CN113078396A (en) * | 2021-03-23 | 2021-07-06 | 凯博能源科技有限公司 | Battery cover assembly, battery and manufacturing method of battery cover assembly |
Non-Patent Citations (1)
| Title |
|---|
| 李林贺;邓适;: "锂电池极耳电阻焊焊接质量改善", 焊接技术, no. 06, 28 June 2013 (2013-06-28) * |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US11217844B2 (en) | Button cell having winding electrode and method for the production thereof | |
| CN113991186B (en) | Battery assembly method and lithium battery | |
| US20240088396A1 (en) | Secondary battery and electrode plate | |
| US9287059B2 (en) | Electric storage device and method of manufacture thereof | |
| EP2783406B1 (en) | Battery comprising an electric connector | |
| CN111370635B (en) | Production method of button cell without welding trace and prepared button cell | |
| CN111370636B (en) | Production method of button cell without welding trace and prepared button cell | |
| CN111354912B (en) | Electric connection method, electric connection structure and product of button cell pole shell and electrode lug | |
| CN105009326A (en) | Electricity storage device | |
| CN111370637B (en) | Production method of button cell without welding trace and prepared button cell | |
| US20230335867A1 (en) | Battery, battery assembly method, and battery pack | |
| CN114927833A (en) | Cylindrical battery assembly method, cylindrical battery and electronic equipment | |
| CN111354909A (en) | Button battery pole shell and electrode lug traceless welding method, welding structure and product | |
| CN111354910A (en) | Button battery pole shell and electrode lug traceless welding method, welding structure and product | |
| KR100964491B1 (en) | Electrochemical Cell | |
| CN113097661A (en) | Battery with a battery cell | |
| JP3926147B2 (en) | battery | |
| CN111354911A (en) | Button battery pole shell and electrode lug traceless welding method, welding structure and product | |
| CN217086828U (en) | Battery and battery pack | |
| CN115775940B (en) | Battery cover plate assembly, battery preparation method and battery | |
| CN115775940A (en) | Battery cover plate assembly, battery preparation method and battery | |
| US20230402727A1 (en) | Cylindrical battery | |
| CN111370638B (en) | Production method of button cell without welding trace and prepared button cell | |
| JP2018045948A (en) | Stacked battery | |
| CN217641480U (en) | Battery cell |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| CB02 | Change of applicant information | ||
| CB02 | Change of applicant information |
Country or region after: China Address after: No.1 Jiangdong Avenue, Jintan District, Changzhou City, Jiangsu Province Applicant after: China Innovation Aviation Technology Group Co.,Ltd. Address before: No.1 Jiangdong Avenue, Jintan District, Changzhou City, Jiangsu Province Applicant before: Zhongchuangxin Aviation Technology Co.,Ltd. Country or region before: China |
|
| GR01 | Patent grant |