CN113314760A - Battery cell manufacturing method and battery cell - Google Patents
Battery cell manufacturing method and battery cell Download PDFInfo
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- CN113314760A CN113314760A CN202110598633.7A CN202110598633A CN113314760A CN 113314760 A CN113314760 A CN 113314760A CN 202110598633 A CN202110598633 A CN 202110598633A CN 113314760 A CN113314760 A CN 113314760A
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- pole
- battery cell
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- tab
- pole group
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/04—Construction or manufacture in general
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K37/00—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/10—Primary casings, jackets or wrappings of a single cell or a single battery
- H01M50/147—Lids or covers
- H01M50/166—Lids or covers characterised by the methods of assembling casings with lids
- H01M50/169—Lids or covers characterised by the methods of assembling casings with lids by welding, brazing or soldering
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/50—Current conducting connections for cells or batteries
- H01M50/531—Electrode connections inside a battery casing
- H01M50/536—Electrode connections inside a battery casing characterised by the method of fixing the leads to the electrodes, e.g. by welding
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
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- 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
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Mechanical Engineering (AREA)
- Connection Of Batteries Or Terminals (AREA)
Abstract
The invention discloses a manufacturing method of a battery cell and the battery cell, wherein the battery cell comprises: a housing, one end of which is open; the cover plate is provided with a pole column and is suitable for sealing the open end of the shell; the pole group assembly is arranged in the shell and is provided with a pole group electric connection end electrically connected with the pole; the manufacturing method of the battery cell comprises the following steps: welding the cover plate to one end of the housing to enclose the pole set assembly within the housing; and welding the electric connection end of the pole group with the pole. According to the manufacturing method of the battery cell, the problem of short circuit of the battery cell caused by the fact that splashes such as impurities, metal scraps and the like generated by welding enter the battery cell can be avoided, and the safety performance of the battery cell is improved.
Description
Technical Field
The invention relates to the field of batteries, in particular to a battery core and a manufacturing method thereof.
Background
Among the correlation technique, traditional electric core adopts utmost point post and busbar riveted structure, and the module busbar is in the same place with the welding of riveting piece, because laser welding has the requirement to material thickness itself, consequently riveting piece must have certain thickness, and then leads to the whole high than higher, the apron cost of traditional apron and the lower problem of battery energy density. And apron and connection piece weld under the core state is rolled up to the electricity core, and laser welding can produce influence electric core performance such as a large amount of impurity, metal fillings, can cause electric core short circuit, arouse conflagration scheduling problem when serious.
Disclosure of Invention
The present invention is directed to solving at least one of the problems of the prior art. Therefore, an object of the present invention is to provide a method for manufacturing a battery cell, which can avoid the problem of short circuit of the battery cell caused by the spatter such as impurities, metal debris, etc. generated by welding entering the battery cell, and improve the safety performance of the battery cell.
The invention also provides a battery cell manufactured by the manufacturing method.
According to the method for manufacturing the battery cell of the present invention, the battery cell includes: a housing, one end of which is open; the cover plate is provided with a pole column and is suitable for sealing the open end of the shell; the pole group assembly is arranged in the shell and is provided with a pole group electric connection end electrically connected with the pole; the manufacturing method of the battery cell comprises the following steps: welding the cover plate to one end of the housing to enclose the pole set assembly within the housing; and welding the electric connection end of the pole group with the pole.
According to the manufacturing method of the battery cell, the welding cover plate and the shell are welded firstly, the pole group assembly is ensured to be in a sealing state in the shell, and then the electric connection end of the pole group and the pole are welded through the welding area on the cover plate.
According to one embodiment of the invention, the pole set assembly comprises: the pole group is accommodated in the shell, and a pole lug is arranged at the end part of the pole group; the connecting piece is arranged between the end part of the pole group and the cover plate and is suitable for connecting the pole lug and the pole column, and the connecting piece is constructed into an electric connecting end of the pole group.
According to an embodiment of the present invention, before the "welding the cover plate and one end of the housing to enclose the pole group assembly within the housing" further comprises: and connecting the polar lugs with the connecting sheets to form the polar group assembly.
According to an embodiment of the present invention, the battery cell further includes: the connecting sheet support is arranged at the end part of the pole group and forms a first matching area suitable for being matched with the connecting sheet and a second matching area suitable for being matched with the pole lug; the connecting piece is provided with a first matching surface and a second matching surface which are positioned on two sides of the connecting piece, the first matching surface is arranged on one side, facing the end cover, of the connecting piece support and is abutted against the first matching area, and the second matching surface is adjacent to the second matching area and is connected with the lug.
According to an embodiment of the invention, after the step of connecting the tab and the connecting sheet to form the pole group assembly, the method further comprises the following steps: disposing the first mating face of the tab at the first mating region; and bending the tab to enable the tab to be matched with the second matching area and connected to the second matching surface.
According to one embodiment of the invention, the tab support comprises: the supporting part is arranged between the pole and the pole group, and the first matching area is arranged on one side, facing the cover plate, of the supporting part and is constructed to be suitable for accommodating the accommodating groove of the connecting piece.
According to one embodiment of the invention, the support portion is configured in plurality, the connecting sheet support further comprises an explosion-proof portion, the explosion-proof portion is arranged between two adjacent support portions, the explosion-proof portion is arranged between the explosion-proof valve of the cover plate and the pole group, and the explosion-proof portion is provided with a communication hole.
According to one embodiment of the invention, the second mating zone is snap-fitted with the tab.
According to one embodiment of the invention, a connecting portion is connected between the explosion-proof portion and the supporting portion, and the width of the connecting portion is smaller than the width of the explosion-proof portion and the width of the supporting portion to form a clamping interface in clamping fit with the tab, and the clamping interface is configured as the second fitting area.
The cell according to the invention is briefly described below.
According to the invention, the battery cell is manufactured by the manufacturing method of the battery cell in the embodiment, and the battery cell is manufactured by the manufacturing method of the battery cell in the embodiment, so that the problem of short circuit of the battery cell caused by the fact that splashes such as impurities, metal scraps and the like generated by welding enter the battery cell in the processing process of the battery cell can be avoided, and the safety performance of the battery cell is greatly improved.
Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.
Drawings
The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
fig. 1 is a flowchart of a method of manufacturing a battery cell according to an embodiment of the present invention;
fig. 2 is an exploded view of a cell according to an embodiment of the invention;
FIG. 3 is a schematic structural diagram of a pole set assembly according to an embodiment of the present invention;
FIG. 4 is a schematic view of a pole set assembly assembled with a strap holder according to an embodiment of the present invention;
FIG. 5 is another schematic view of a pole set assembly assembled with a strap mount in accordance with an embodiment of the present invention;
fig. 6 is a schematic structural diagram of a cell according to an embodiment of the present invention;
fig. 7 is a flowchart of another embodiment of a method for manufacturing a battery cell according to an embodiment of the present invention.
Reference numerals:
the battery cell 10, the casing 11, the cover plate 12, the explosion-proof valve 121, the pole 122,
the pole group assembly 13, the pole group 131, the connecting piece 132, the tab 133,
the connector piece holder 14, the first mating region 141, the second mating region 142,
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.
A method of manufacturing a battery cell 10 according to an embodiment of the present invention is described below with reference to fig. 1 to 7, where the battery cell 10 includes a case 11, a cover plate 12, and a pole group assembly 13. Casing 11 one end is opened, is equipped with utmost point post 122 on the apron 12 and is suitable for the open end of closed casing 11, and utmost point group assembly 13 sets up in casing 11 and is equipped with the utmost point group electricity connection end of being connected with utmost point post 122 electricity. The method for manufacturing the battery cell 10 includes: welding the cover plate 12 to one end of the housing 11 to enclose the pole group assembly 13 within the housing 11; the pole set electrical connection end and pole 122 are welded.
Among the correlation technique, traditional electric core adopts utmost point post and busbar riveted structure, and the module busbar is in the same place with the welding of riveting piece, because laser welding has the requirement to material thickness itself, consequently riveting piece must have certain thickness, and then leads to the whole high than higher, the apron cost of traditional apron and the lower problem of battery energy density. And apron and connection piece weld under the core state is rolled up to the electricity core, and laser welding can produce influence electric core performance such as a large amount of impurity, metal fillings, can cause electric core short circuit, arouse conflagration scheduling problem when serious.
Specifically, the battery cell 10 includes a case 11, a cover plate 12, and a pole group assembly 13. The housing 11 may be constructed in a hollow structure, and one end of the housing 11 is open. The cover plate 12 can play a role in guiding current out of the battery cell 10, and the cover plate 12 can also be used for sealing the open end of the shell 11 to insulate the pole group assembly 13 from the outside, so as to ensure safe output of current, wherein a pole column 122 is arranged on the cover plate 12, and the pole column 122 can play a role in conducting current. The pole group assembly 13 is disposed in the housing 11, and the pole group assembly 13 is provided with a pole group electrical connection end electrically connected to the pole column 122, so that the current of the pole group assembly 13 is transmitted to the outside by electrically connecting the pole group electrical connection end with the pole column 122.
The method for manufacturing the battery cell 10 of the present invention includes the steps of:
s1, welding the cover plate 12 to one end of the housing 11 to enclose the pole set assembly 13 in the housing 11. First, the pole assembly 13 is placed inside the housing 11, and then the cover plate 12 is welded to one end of the housing 11 to ensure that the pole assembly 13 can be enclosed in the housing 11.
And S2, welding the electric connection end of the pole group with the pole 122. The welding gun can weld and fix the electric connection end of the pole column 122 and the pole group through the welding area on the pole column 122, so that impurities or metal debris generated by welding are prevented from entering the battery cell 10, and the safety performance of the battery cell 10 is improved.
In short, according to the manufacturing method of the battery cell 10 of the present invention, the welding cover plate 12 and the casing 11 are welded first, so as to ensure that the electrode assembly 13 is in a sealed state in the casing 11, and then the electric connection end of the electrode assembly and the electrode post 122 are welded by the welding area on the cover plate 12, so that the manufacturing method can ensure that the inside of the battery cell 10 is in a sealed state when the electric connection end of the electrode assembly and the electrode post 122 are welded, thereby avoiding the problem of short circuit of the battery cell 10 caused by the entry of splashes such as impurities, metal debris and the like generated by welding into the battery cell 10, and improving the safety performance of the battery cell 10.
According to one embodiment of the present invention, the pole set assembly 13 includes a pole set 131 and a connecting tab 132. The pole group 131 is accommodated in the housing 11, and a tab 133 is provided at an end of the pole group 131, and the tab 133 may be configured in plurality, and one end of the tab 133 may be connected to the pole group 131, and specifically, a plurality of tabs 133 may be connected to the pole group 131 by welding. The other end of the tab 133 is fixed to the connecting piece 132, and a plurality of tabs 133 may be connected to the connecting piece 132 by welding. Wherein, the welding mode can be ultrasonic welding. The tab 133 may electrically connect the connection piece 132 with the pole group 131, and the tab 133 may be deformed by bending to adjust the position of the pole group 131 to be suitable for accommodating the pole group 131 in a position occupying a small volume in the case 11.
A connecting tab 132 is disposed between the end of the pole set 131 and the cover plate 12, and the connecting tab 132 is adapted to connect the tab 133 with the pole 122, and further, the connecting tab 132 can collect the current on the tab 133 to the pole 122. Wherein the connecting piece 132 is configured as a pole group electrical connection end, in step S2, the connecting piece 132 and the pole 122 may be fixed by welding.
According to an embodiment of the present invention, welding the cover plate 12 to one end of the housing 11 to enclose the pole set assembly 13 in the housing 11 at step S1 further includes connecting the tab 133 to the connecting piece 132 to form the pole set assembly 13. Specifically, one end of the tab 133 is disposed at one end of the electrode group 131, and the other end of the tab 133 is fixed to the connection piece 132. The cover plate 12 is fixed by injection molding with plastic, and when the connecting piece 132 is welded with the pole 122, the connecting piece 132 can be welded at the center of the pole 122, so that the heat affected zone of the welding is kept away from the plastic. Therefore, the thickness of the inner side of the pole 122 can be reduced to the maximum extent, thereby improving the space utilization rate and the energy density of the battery cell 10.
According to an embodiment of the present invention, the battery cell 10 further includes a connecting plate support 14, the connecting plate support 14 is disposed below the casing 11, the connecting plate support 14 is located at an end of the pole group 131, the connecting plate support 14 can be used for supporting and fixing the connecting plate 132, a first matching region 141 and a second matching region 142 are formed on the connecting plate support 14, the first matching region 141 can be matched with the connecting plate 132, and the second matching region 142 can be matched with the tab 133.
Further, the first matching area 141 may be disposed on the upper side of the connecting plate support 14, and when the electrical connection end of the electrode assembly is welded to the electrode post 122, the first matching area 141 may play a role of supporting the connecting plate 132, so as to maintain the pressure between the connecting plate 132 and the electrode post 122, so that the welding process is performed, and meanwhile, the cover plate 12 and the electrode assembly 131 are spaced apart, so as to ensure the normal operation of the battery cell 10. The second engagement regions 142 may be provided on both sides of the tab carrier 14, and the second engagement regions 142 may be configured as grooves adapted to provide a certain space for the mounting of the tab 133.
The connecting plate 132 has a first mating surface and a second mating surface located at two sides of the connecting plate 132, wherein the first mating surface is disposed at one side of the connecting plate support 14 facing the end cover, and the first mating surface abuts against the first mating region 141, the second mating surface is adjacent to the second mating region 142, and the second mating surface is connected with the tab 133, the first mating surface and the second mating surface of the connecting plate 132 are respectively matched with the connecting plate support 14 and the tab 133, so as to realize the connection between the connecting plate 132 and the tab 133, and the tab 133 and the connecting plate 132 are both supported on the connecting plate support 14, so as to keep the stable matching between the tab 133 and the connecting plate 132.
According to an embodiment of the present invention, after "connecting the tab 133 with the connecting piece 132 to form the pole group assembly 13", the method further includes: disposing the first mating face of the connecting tab 132 at the first mating region 141; the tab 133 is bent such that the tab 133 engages and is connected to the second mating surface with the second mating zone 142. The two pole groups 131 may be provided, the tabs 133 of the two pole groups 131 are connected to a connecting sheet 132, the tabs 133 may be bent to make the two pole groups 131 arranged in parallel in a rectangular shape, so as to accommodate the pole groups 131 in the housing 11, the bent tabs 133 are in an "L" shape and include a first section and a second section connected to each other, the first section is connected to the pole groups 131, the second section is disposed at a free end of the first section and is disposed at a certain angle with the first section after being bent, the second section is connected to a second matching surface, the bent tabs 133 may be connected to the second matching surface, and the connecting sheet support 14 may simultaneously support the second section of the tabs 133 and the connecting sheet 132.
According to an embodiment of the present invention, the connecting sheet support 14 includes a support portion 143, the support portion 143 is disposed between the pole 122 and the pole group 131, the support portion 143 can serve as a support, the first mating region 141 is disposed on a side of the support portion 143 facing the cover plate 12, and the first mating region 141 is configured as a receiving groove adapted to receive the connecting sheet 132, the connecting sheet 132 is received in the receiving groove by mating the connecting sheet 132 with the receiving groove, the first mating surface of the connecting sheet 132 is abutted against an outer surface of the receiving groove, so that the connecting sheet 132 is mounted on the connecting sheet support 14, and a distance between the cover plate 13 and an end of the pole group 131 is further reduced. The connecting sheet support 14 may further have a plurality of hollow groove structures, and the hollow grooves may reduce the mass of the connecting sheet support 14, so as to reduce the weight of the battery cell 10.
According to an embodiment of the present invention, the supporting portion 143 may be configured in a plurality, the plurality of supporting portions 143 are arranged at intervals on the connecting sheet support 14, the connecting sheet support 14 further includes an explosion-proof portion 144, the explosion-proof portion 144 may be disposed between two adjacent supporting portions 143, and the explosion-proof portion 144 may also be disposed between the first mating region 141 and the second mating region 142. The explosion-proof part 144 is located between the explosion-proof valve 121 of the cover plate 12 and the pole group 131, a plurality of communication holes 1441 are arranged on the explosion-proof part 144, the communication holes 1441 are distributed on the explosion-proof part 144 at intervals, the communication holes 1441 can be used for conducting gas, when the temperature is high, the internal pressure of the battery is too large, the gas can flow to the explosion-proof valve 121 through the explosion-proof part 144, and the explosion-proof valve 121 releases the gas to realize the pressure reduction effect by opening.
According to an embodiment of the present invention, the second engagement area 142 is engaged with the tab 133, and the second engagement area 142 is provided with a locking groove, so that the tab 133 is received in the locking groove by engaging the tab 133 with the locking groove, and the outer surface of the tab 133 abuts against the inner surface of the locking groove to limit the movement of the tab 133, thereby allowing the tab 133 to be mounted on the tab support 14.
According to an embodiment of the present invention, a connecting portion is connected between the explosion-proof portion 144 and the supporting portion 143, and the width of the connecting portion is smaller than the width of the explosion-proof portion 144 and the width of the supporting portion 143, so that the connecting portion and the diameter of the supporting portion 143 define a partial space, which may be formed as a plurality of card interfaces in snap fit with the tab 133, wherein the card interfaces may be configured in a plurality, and the plurality of card interfaces are symmetrically disposed at both sides of the connecting sheet support 14. Wherein the card interface is configured as a second mating zone 142.
The battery cell 10 according to the present invention is briefly described below.
The battery cell 10 according to the present invention is manufactured by the method for manufacturing the battery cell 10 according to the above-described embodiment, and since the battery cell 10 according to the present invention is manufactured by the method for manufacturing the battery cell 10 according to the above-described embodiment, the problem that the battery cell 10 is short-circuited due to spatters such as impurities, metal debris, and the like generated by welding entering the battery cell 10 during the processing of the battery cell 10 can be avoided, so that the safety performance of the battery cell 10 is greatly improved.
In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the invention and to simplify the description, and are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and are not to be considered limiting of the invention.
In the description of the present invention, "the first feature" and "the second feature" may include one or more of the features.
In the description of the present invention, "a plurality" means two or more.
In the description of the present invention, the first feature being "on" or "under" the second feature may include the first and second features being in direct contact, and may also include the first and second features being in contact with each other not directly but through another feature therebetween.
In the description of the invention, "above", "over" and "above" a first feature in a second feature includes the first feature being directly above and obliquely above the second feature, or simply means that the first feature is higher in level than the second feature.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an illustrative embodiment," "an example," "a specific example," or "some examples" or the like mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
While embodiments of the invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.
Claims (10)
1. A method of manufacturing a cell, the cell comprising:
a housing (11), wherein one end of the housing (11) is open;
a cover plate (12), wherein the cover plate (12) is provided with a pole (122) and is suitable for sealing the open end of the shell (11);
the pole group assembly (13), the pole group assembly (13) is arranged in the shell (11) and is provided with a pole group electric connection end electrically connected with the pole column (122);
the manufacturing method of the battery cell comprises the following steps:
welding the cover plate (12) to one end of the housing (11) to enclose the pole set assembly (13) within the housing (11);
and welding the electric connection end of the pole group with the pole (122).
2. The method of manufacturing a cell according to claim 1, wherein the pole set assembly (13) comprises:
the pole group (131), the said pole group (131) is accommodated in the said body (11) and the end has tabs (133);
the connecting piece (132), the connecting piece (132) is located between utmost point group (131) tip and apron (12) and be suitable for to connect utmost point ear (133) with utmost point post (122), connecting piece (132) structure is for utmost point group electricity connects the end.
3. The method for manufacturing the battery cell according to claim 2, wherein before the step of welding the cover plate (12) and one end of the housing (11) to enclose the pole group assembly (13) in the housing (11), the method further comprises:
connecting the tab (133) with the connecting piece (132) to form the pole set assembly (13).
4. The method of manufacturing the cell of claim 3, wherein the cell further comprises:
the connecting sheet support (14) is arranged at the end part of the pole group (131) and forms a first matching area (141) suitable for being matched with the connecting sheet (132) and a second matching area (142) suitable for being matched with the tab (133);
the connecting piece (132) is provided with a first matching surface and a second matching surface which are positioned on two sides of the connecting piece (132), the first matching surface is arranged on one side, facing the end cover, of the connecting piece bracket (14) and is abutted against the first matching area (141), and the second matching surface is adjacent to the second matching area (142) and is connected with the lug (133).
5. The method for manufacturing the battery cell according to claim 4, wherein the step of connecting the tab (133) and the connecting piece (132) to form the pole group assembly (13) further comprises:
arranging the first mating face of the connecting tab (132) at the first mating region (141);
and bending the tab (133) to enable the tab (133) to be matched with the second matching area (142) and connected to the second matching surface.
6. The method of manufacturing a cell according to claim 5, wherein the tab holder (14) comprises:
a support portion (143), the support portion (143) is disposed between the pole (122) and the pole group (131), and the first fitting region (141) is disposed on a side of the support portion (143) facing the cover plate (12) and is configured as a receiving groove adapted to receive the connecting sheet (132).
7. The method for manufacturing the battery cell according to claim 6, wherein the supporting portions (143) are configured in plurality, the connecting sheet support (14) further comprises an explosion-proof portion (144), the explosion-proof portion (144) is arranged between two adjacent supporting portions (143), the explosion-proof portion (144) is arranged between the explosion-proof valve (121) of the cover plate (12) and the pole group (131), and a communication hole (1441) is formed in the explosion-proof portion (144).
8. The method of manufacturing a cell according to claim 7, wherein the second mating zone (142) is snap-fitted with the tab (133).
9. The method for manufacturing the battery cell of claim 8, wherein a connecting portion is connected between the explosion-proof portion (144) and the supporting portion (143), and the width of the connecting portion is smaller than the widths of the explosion-proof portion (144) and the supporting portion (143) to form a clamping interface in clamping fit with the tab (133), and the clamping interface is configured as the second fitting region (142).
10. A battery cell, characterized by being constructed as manufactured by the method of manufacturing a battery cell according to any of claims 1-9.
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| CN202110598633.7A CN113314760B (en) | 2021-05-31 | 2021-05-31 | Battery cell manufacturing method and battery cell |
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| CN202110598633.7A CN113314760B (en) | 2021-05-31 | 2021-05-31 | Battery cell manufacturing method and battery cell |
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| CN113314760A true CN113314760A (en) | 2021-08-27 |
| CN113314760B CN113314760B (en) | 2022-05-27 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113871765A (en) * | 2021-09-26 | 2021-12-31 | 贵阳比耐新能源科技有限公司 | Cylindrical battery and manufacturing method thereof |
| WO2023115544A1 (en) * | 2021-12-24 | 2023-06-29 | 宁德新能源科技有限公司 | Insulating sheet, cell, battery and electric device |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN209447912U (en) * | 2019-03-13 | 2019-09-27 | 宁德时代新能源科技股份有限公司 | Secondary cell |
| CN212625814U (en) * | 2020-07-24 | 2021-02-26 | 蜂巢能源科技有限公司 | Insulating part for power battery |
| CN112771714A (en) * | 2019-11-25 | 2021-05-07 | 宁德时代新能源科技股份有限公司 | Battery cell, battery module, battery pack, device using battery cell as power supply, and method for assembling battery cell |
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| CN209447912U (en) * | 2019-03-13 | 2019-09-27 | 宁德时代新能源科技股份有限公司 | Secondary cell |
| CN112771714A (en) * | 2019-11-25 | 2021-05-07 | 宁德时代新能源科技股份有限公司 | Battery cell, battery module, battery pack, device using battery cell as power supply, and method for assembling battery cell |
| CN212625814U (en) * | 2020-07-24 | 2021-02-26 | 蜂巢能源科技有限公司 | Insulating part for power battery |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113871765A (en) * | 2021-09-26 | 2021-12-31 | 贵阳比耐新能源科技有限公司 | Cylindrical battery and manufacturing method thereof |
| CN113871765B (en) * | 2021-09-26 | 2024-02-23 | 贵阳比耐新能源科技有限公司 | Cylindrical battery and manufacturing method thereof |
| WO2023115544A1 (en) * | 2021-12-24 | 2023-06-29 | 宁德新能源科技有限公司 | Insulating sheet, cell, battery and electric device |
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| CN113314760B (en) | 2022-05-27 |
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