CN116937032A - Top cover assembly, battery cell, battery module, device and manufacturing method - Google Patents
Top cover assembly, battery cell, battery module, device and manufacturing method Download PDFInfo
- Publication number
- CN116937032A CN116937032A CN202311034073.8A CN202311034073A CN116937032A CN 116937032 A CN116937032 A CN 116937032A CN 202311034073 A CN202311034073 A CN 202311034073A CN 116937032 A CN116937032 A CN 116937032A
- Authority
- CN
- China
- Prior art keywords
- top cover
- cover plate
- hole
- electrode terminal
- connection
- 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.)
- Pending
Links
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 10
- 238000005452 bending Methods 0.000 claims abstract description 44
- 239000002356 single layer Substances 0.000 claims abstract description 3
- 125000006850 spacer group Chemical group 0.000 claims description 48
- 239000012212 insulator Substances 0.000 claims description 45
- 238000002955 isolation Methods 0.000 claims description 16
- 238000000034 method Methods 0.000 claims description 5
- 230000008569 process Effects 0.000 claims description 5
- 238000009413 insulation Methods 0.000 claims 2
- 238000005253 cladding Methods 0.000 claims 1
- 238000007789 sealing Methods 0.000 abstract description 36
- 230000009471 action Effects 0.000 abstract description 2
- 238000005192 partition Methods 0.000 description 13
- 210000001503 joint Anatomy 0.000 description 9
- 238000001746 injection moulding Methods 0.000 description 5
- 230000009286 beneficial effect Effects 0.000 description 4
- 239000000463 material Substances 0.000 description 3
- 239000004033 plastic Substances 0.000 description 3
- 239000011149 active material Substances 0.000 description 2
- 239000011248 coating agent Substances 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 230000008878 coupling Effects 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- 239000003792 electrolyte Substances 0.000 description 2
- 239000011347 resin Substances 0.000 description 2
- 229920005989 resin Polymers 0.000 description 2
- 239000005060 rubber Substances 0.000 description 2
- 229910000838 Al alloy Inorganic materials 0.000 description 1
- 208000029154 Narrow face Diseases 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000012778 molding material Substances 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
Classifications
-
- 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
- H01M50/147—Lids or covers
- H01M50/148—Lids or covers characterised by their shape
- H01M50/15—Lids or covers characterised by their shape for prismatic or rectangular cells
-
- 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
- H01M50/183—Sealing members
- H01M50/186—Sealing members characterised by the disposition of the sealing members
- H01M50/188—Sealing members characterised by the disposition of the sealing members the sealing members being arranged between the lid and terminal
-
- 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
- H01M50/543—Terminals
- H01M50/552—Terminals characterised by their shape
- H01M50/553—Terminals adapted for prismatic, pouch or rectangular cells
-
- 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
- H01M50/572—Means for preventing undesired use or discharge
- H01M50/584—Means for preventing undesired use or discharge for preventing incorrect connections inside or outside the batteries
- H01M50/59—Means for preventing undesired use or discharge for preventing incorrect connections inside or outside the batteries characterised by the protection means
- H01M50/593—Spacers; Insulating plates
-
- 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
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Connection Of Batteries Or Terminals (AREA)
Abstract
The invention relates to a top cover assembly, a battery cell, a battery module, a device and a manufacturing method. The top cap subassembly includes: a top cover plate having an electrode lead-out hole extending in a thickness direction thereof; the electrode terminal is of a single-layer sheet structure, is inserted into the electrode lead-out hole and is provided with an outer connecting part, and the outer connecting part comprises a bending section turned towards the top cover plate; the insulating part is fixedly connected with the top cover plate and fixedly connected with the bending section. The top cover assembly provided by the embodiment of the invention can improve the connection strength of the electrode terminal and the top cover plate, and reduce the possibility of sealing failure between the electrode terminal and the insulating piece caused by movement of the electrode terminal under the action of tensile force.
Description
The invention is based on the application number 201911121475.5, the application date is 2019, 11, 15, and the application is a division application of the invention named as 'top cover component, battery cell, battery module, device and manufacturing method' of New energy science and technology Co., ltd.
Technical Field
The present invention relates to the field of battery technologies, and in particular, to a top cap assembly, a battery cell, a battery module, a device, and a manufacturing method.
Background
Battery cells have been widely used in the fields of hybrid vehicles and electric vehicles. This is due to the advantages of high energy, high capacity, and high power. The battery unit comprises a shell, an electrode assembly arranged in the shell, a top cover plate connected with the shell in a sealing way, an electrode terminal arranged on the top cover plate, a sealing structure body arranged between the electrode terminal and the top cover plate, an insulating plate connected with the top cover plate and a current collector connected with the electrode lug of the electrode assembly and the electrode terminal. The top cover plate has an electrode lead-out hole, and the electrode terminal passes through the electrode lead-out hole. The sealing structure is positioned in the electrode lead-out hole. The electrode terminal is hermetically connected to the electrode terminal via a sealing structure. The electrode terminal has an outer connecting portion exposed to the outside of the sealing structure. When an external tensile force is applied to the outer connecting portion, the tensile force is transmitted to the top cover plate through the sealing structure, and the region of the outer connecting portion close to the sealing structure is subjected to a large tensile stress and moves, so that the sealing state between the region and the sealing structure may be released.
Disclosure of Invention
The embodiment of the invention provides a top cover assembly, a battery cell, a battery module, a device and a manufacturing method. The top cover assembly can improve the connection strength of the electrode terminal and the top cover plate, and reduce the possibility of sealing failure between the electrode terminal and the sealing structure body caused by movement of the electrode terminal under the action of tensile force.
In one aspect, an embodiment of the present invention provides a top cap assembly for a battery cell, including: a top cover plate having an electrode lead-out hole extending in a thickness direction thereof; an electrode terminal having a single-layer sheet structure, the electrode terminal being inserted into the electrode lead-out hole, the electrode terminal having an outer connection portion; the outer connecting part comprises a bending section which is turned towards the top cover plate; the insulating part is fixedly connected with the top cover plate and fixedly connected with the bending section.
According to one aspect of the embodiment of the invention, the insulating member comprises an inner isolation part arranged on one side of the bending section close to the top cover plate, and the inner isolation part is fixedly connected with the bending section.
According to one aspect of the embodiment of the invention, the insulating member has an outer isolation portion disposed on a side of the bending section away from the top cover plate, and the inner isolation portion is connected to the outer isolation portion to cover the bending section.
According to one aspect of the embodiment of the invention, the bending section is located entirely inside the connection structure formed by the inner and outer spacers.
According to one aspect of the embodiment of the invention, the insulating member has a relief opening provided at the outer side partition, and a portion of the folded section is exposed to the external environment through the relief opening.
According to an aspect of the embodiment of the invention, the insulating member further includes a connection protrusion disposed on the outer side isolation portion, and the bent section is provided with a first connection hole into which the connection protrusion extends.
According to one aspect of an embodiment of the invention, the first connection hole penetrates the bending section, and the connection stud connects the inner side spacer and the outer side spacer.
According to one aspect of the embodiment of the invention, the bending section is provided with a connecting convex column, and the inner side isolation part is provided with a first connecting hole; and/or the insulating piece is provided with an outer side isolation part arranged on one side of the bending section far away from the top cover plate, the inner side isolation part is connected with the outer side isolation part to cover the bending section, the outer side isolation part is provided with a first connecting hole, and the connecting convex column stretches into the first connecting hole.
According to an aspect of the embodiment of the invention, the insulating member further includes a connection post provided at the inner side partition, and the bent section is provided with a first connection hole into which the connection post extends.
According to one aspect of the embodiment of the invention, the electrode terminal further comprises a middle part connected with the outer connecting part, the middle part is at least partially arranged in the electrode leading-out hole, a limit concave part is arranged on the middle part near the edge of the top cover plate, and the insulating part is provided with a limit convex part matched with the limit concave part; or alternatively, the process may be performed,
the edge of the middle part, which is close to the top cover plate, is provided with a limit convex part, and the insulating part is provided with a limit concave part matched with the limit convex part.
According to an aspect of the embodiment of the invention, the electrode terminal further includes an intermediate portion at least partially disposed in the electrode lead-out hole, and the bent section is disposed perpendicular to the intermediate portion.
According to an aspect of the embodiment of the invention, the top cover assembly further comprises an insulating plate, the top cover plate is provided with an outer side face and an inner side face, the insulating plate is arranged on one side, far away from the bending section, of the top cover plate, the insulating plate is provided with a groove corresponding to the electrode lead-out hole, an annular cavity surrounding the electrode lead-out hole is formed between the groove and the inner side face, the insulating piece is provided with an embedding part, and at least part of the embedding part stretches into the annular cavity.
According to an aspect of an embodiment of the present invention, the top cover plate has an outer side surface and a recess recessed from the outer side surface in a thickness direction, and a part of the insulating member is disposed in the recess; or alternatively, the process may be performed,
the top cover plate is provided with an outer side surface, a concave part recessed in the thickness direction from the outer side surface and a second connecting hole communicated with the concave part, a part of the insulating piece is arranged in the concave part, and the insulating piece is provided with a connecting column body connected with the second connecting hole.
According to an aspect of an embodiment of the present invention, the electrode terminal is a sheet-like structure of an integrally formed structure; and/or the electrode terminal is hermetically connected with the cap plate through an insulating member.
According to the top cap assembly of the embodiment of the present invention, the outer connection part of the electrode terminal has a bent section turned over toward the top cap plate. The bending section of the outer connecting part is fixedly connected with the top cover plate through an insulating piece. Because the top cover plate can play a limiting role through the insulating part to the bent section, when the outer connecting part is acted by external tensile force, the tensile force can be transmitted to the top cover plate through the insulating part, so that the tensile force has little or no influence on the area, close to the electrode lead-out hole, of the outer connecting part, namely the area, close to the electrode lead-out hole, of the outer connecting part is only subjected to little tensile force or is not acted by the tensile force. A sealing structure is provided between the electrode terminal and the top cover plate, and the sealing structure is located in the electrode lead-out hole. In this way, when the external connecting part bears external tensile force, the possibility that the external connecting part moves to cause the outer connecting part to be separated from the sealing structure body between the area close to the electrode leading-out hole is reduced, and the connection stability and reliability of the electrode terminal and the top cover plate are improved.
In another aspect, embodiments of the present invention provide a battery cell including a cap assembly as described above.
According to another aspect of the embodiment of the present invention, the electrode terminal further includes a bus bar section connected to the bent section, the bus bar section being for electrical connection with the bus bar section of the adjacent battery cell.
In yet another aspect, embodiments of the present invention provide a battery module including a battery cell as described above.
In yet another aspect, an embodiment of the present invention provides an apparatus using a battery cell as a power source, which includes the battery cell as described above.
In still another aspect, an embodiment of the present invention provides a method of manufacturing a top cap assembly, including:
passing an electrode terminal having an outer connecting portion through the electrode lead-out hole of the top cover plate, and positioning the outer connecting portion outside the top cover plate, the outer connecting portion including a bent section folded toward the top cover plate;
the insulating piece is fixedly connected to the top cover plate, and the bending section is fixedly connected with the insulating piece.
Drawings
Features, advantages, and technical effects of exemplary embodiments of the present invention will be described below with reference to the accompanying drawings.
FIG. 1 is a schematic illustration of a vehicle according to an embodiment of the present invention;
fig. 2 is a schematic view illustrating an exploded structure of a battery pack according to an embodiment of the present invention;
fig. 3 is a schematic view showing a partial structure of a battery module according to an embodiment of the present invention;
fig. 4 is a schematic diagram showing an exploded structure of a battery cell according to an embodiment of the present invention;
FIG. 5 is a schematic view showing an exploded construction of a header assembly according to an embodiment of the present invention;
FIG. 6 is an enlarged view at A in FIG. 5;
fig. 7 is a schematic view showing a structure of a top cap assembly according to another embodiment of the present invention;
fig. 8 is a schematic view showing a structure of a top cap assembly according to still another embodiment of the present invention;
fig. 9 is a schematic exploded view of a cap assembly according to another embodiment of the present invention;
FIG. 10 is a schematic cross-sectional view taken along B-B in FIG. 8;
FIG. 11 is a schematic exploded view of a header assembly according to yet another embodiment of the present invention;
FIG. 12 is a schematic cross-sectional view of a header assembly according to one embodiment of the present invention;
FIG. 13 is an enlarged view of FIG. 12 at C;
FIG. 14 is a schematic cross-sectional view of a header assembly according to yet another embodiment of the present invention;
fig. 15 is an enlarged view of D in fig. 14;
FIG. 16 is a schematic view showing an exploded construction of a header assembly according to another embodiment of the present invention;
fig. 17 is a flow chart illustrating a manufacturing method of the cap assembly according to an embodiment of the present invention.
In the drawings, the drawings are not necessarily to scale.
Marking:
1. a battery pack;
10. a battery module;
20. a battery cell; 21. a housing; 22. an electrode assembly;
30. a top cover assembly;
40. a top cover plate; 40a, inner side; 40b, outer side; 41. electrode lead-out holes; 42. a concave portion; 43. a second connection hole;
50. an electrode terminal; 51. a current collecting part; 52. an intermediate portion; 53. an outer connecting portion; 53a, a bending section; 53b, a confluence section;
60. an insulating member; 61. an outer side portion; 61a, an inner side spacer; 61b, an outer spacer; 61c, a yielding opening; 611. a base; 612. a boss; 62. an extension; 63. an engagement portion; 64. a connecting column;
70. a first connection hole;
80. connecting convex columns;
90. a limit concave part;
100. a limit protrusion;
200. an insulating plate; 201. a groove;
300. an annular cavity;
400. a seal ring;
x, thickness direction.
Detailed Description
Embodiments of the present invention are described in further detail below with reference to the accompanying drawings and examples. The following detailed description of the embodiments and the accompanying drawings are provided to illustrate the principles of the invention and are not intended to limit the scope of the invention, i.e., the invention is not limited to the embodiments described.
In the description of the present invention, it is to be noted that, unless otherwise indicated, the meaning of "plurality" is two or more; the terms "upper," "lower," "left," "right," "inner," "outer," and the like are merely used for convenience in describing the present invention and to simplify the description, and do not denote or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus are not to be construed as limiting the present invention. Furthermore, 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.
In the description of the present invention, it should also be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be directly connected or indirectly connected through an intermediate medium. The specific meaning of the above terms in the present invention can be understood as appropriate by those of ordinary skill in the art.
For a better understanding of the present invention, embodiments of the present invention are described below with reference to fig. 1 to 17.
The embodiment of the invention provides a device using a battery cell as a power supply. The device may be, but is not limited to, a vehicle, a ship, an aircraft, or the like. Referring to fig. 1, one embodiment of the present invention provides a vehicle including a vehicle body and a battery module. The battery module is disposed on the vehicle body. The vehicle can be a pure electric vehicle, a hybrid electric vehicle or a range-extended vehicle. The vehicle body is provided with a driving motor electrically connected with the battery module. The battery module supplies power to the driving motor. The driving motor is connected with wheels on the vehicle body through a transmission mechanism, so that the vehicle is driven to travel. Alternatively, the battery module may be horizontally disposed at the bottom of the vehicle body.
Referring to fig. 2, the battery module may be a battery pack 1. There are various ways of disposing the battery pack 1. In some alternative embodiments, the battery pack 1 includes a case and a battery module 10 disposed in the case. The number of the battery modules 10 is one or more. One or more battery modules 10 are arranged in a row in a case. The type of the case is not limited. The box body can be a frame-shaped box body, a disc-shaped box body or a box-shaped box body, etc. Alternatively, the case may include a lower case for receiving the battery module 10 and an upper case that is covered with the lower case. The lower case and the lower case are covered to form a receiving part for receiving the battery module 10. It is understood that the battery module may be the battery module 10.
Referring to fig. 3, the battery module 10 includes a plurality of battery cells 20. The battery module 10 may be provided in various manners, and in one embodiment, the battery module 10 includes a receiving part and a plurality of battery cells 20 positioned in the receiving part. The plurality of battery cells 20 are arranged side by side in the housing. The accommodating part is arranged in various ways, for example, the accommodating part comprises a shell and a cover plate which is covered at the shell; alternatively, the accommodating portion includes a side plate and an end plate connected in succession; alternatively, the receiving portion includes two end plates disposed opposite each other and a band surrounding and outside the end plates and the battery cells 20.
Referring to fig. 4, the battery cell 20 according to the embodiment of the present invention includes a case 21, an electrode assembly 22 disposed in the case 21, and a cap assembly 30 sealingly connected to the case 21.
The housing 21 of the present embodiment is a square structure or other shape. The case 21 has an inner space accommodating the electrode assembly 22 and the electrolyte and an opening communicating with the inner space. The housing 21 may be made of a material such as aluminum, aluminum alloy, or plastic.
The electrode assembly 22 of the embodiment of the present invention may form the body portion by stacking or winding together the first and second electrode sheets and the separator between the first and second electrode sheets, wherein the separator is an insulator interposed between the first and second electrode sheets. The body portion of the present embodiment is generally a flat structure having a predetermined thickness, height and width. The axial direction of the main body part is the height direction of the main body part. The main body portion has two end faces which are opposed to each other in the axial direction thereof. In this embodiment, the first electrode sheet is illustratively a positive electrode sheet, and the second electrode sheet is illustratively a negative electrode sheet. The positive electrode sheet active material is coated on the coating region of the positive electrode sheet, and the negative electrode sheet active material is coated on the coating region of the negative electrode sheet. The uncoated region extending from the coated region of the body portion serves as a tab. The electrode assembly 22 includes two tabs, namely a positive tab and a negative tab. The positive tab extends from the coated region of the positive tab and the negative tab extends from the coated region of the negative tab. The main body portion has wide faces and narrow faces alternately arranged in the circumferential direction thereof.
Referring to fig. 5, the top cap assembly 30 of the embodiment of the present invention includes a top cap plate 40, electrode terminals 50, and an insulating member 60. The top cover 40 includes an inner side surface 40a and an outer side surface 40b which are disposed opposite to each other in the thickness direction X, and an electrode lead-out hole 41 extending in the thickness direction X. The electrode terminal 50 is inserted into the electrode lead-out hole 41 and is hermetically fitted to the cap plate 40. The electrode terminal 50 has an outer connection portion 53 provided on the outer side surface 40b of the cap plate 40. Adjacent two battery cells 20 may be connected in series or parallel with each other through respective outer connection parts 53. The outer connecting portion 53 is located on the outer side surface 40b side of the top cover 40. The outer connecting portion 53 includes a bent section 53a that is folded toward the top cover 40. The insulator 60 is fixedly connected to the top cover 40, and the insulator 60 is fixedly connected to the bent section 53a.
In the top cap assembly 30 according to the embodiment of the present invention, the outer connection portion 53 of the electrode terminal 50 has the bent section 53a folded toward the top cap plate 40. The bent section 53a of the outer connecting portion 53 is connected and fixed to the top cover 40 by an insulating member 60. Since the top cover 40 can play a limiting role on the bent section 53a by the insulating member 60, when the outside connection portion 53 receives an external tensile force, the tensile force is transmitted to the top cover 40 through the insulating member 60, so that the tensile force has little or no influence on the area of the outside connection portion 53 near the electrode lead-out hole 41, that is, the area of the outside connection portion 53 near the electrode lead-out hole 41 receives only a small tensile force or no tensile force. A sealing structure is provided between the electrode terminal 50 and the cap plate 40, and the sealing structure is located in the electrode lead-out hole 41. In this way, when the external connection portion 53 receives an external tensile force, the possibility that the external connection portion 53 moves to cause the separation of the sealing state between the top cover 40 and the region of the external connection portion 53 adjacent to the electrode lead-out hole 41 is reduced, and the connection stability and reliability between the electrode terminal 50 and the top cover 40 are improved. When the battery cells 20 using the cap assembly 30 are connected in series or in parallel with each other, the outside connection parts 53 of the electrode terminals 50 of the adjacent two battery cells 20 exert a tensile force on each other when the battery cells 20 themselves expand. Since the outer connecting portion 53 is connected and fixed to the insulating member 60 by the bent portion 53a, the possibility that the region of the outer connecting portion 53 adjacent to the sealing structure is subjected to a small tensile stress to move is reduced, and thus the possibility that the region is separated from the sealing structure is reduced, thereby improving the safety of the battery cell 20.
In one embodiment, referring to fig. 6, the insulating member 60 directly seals the electrode terminal 50 and the cap plate 40, that is, the electrode terminal 50, the insulating member 60 and the cap plate 40 are hermetically connected to each other, so that it is unnecessary to separately provide a sealing structure such as a sealing ring 400 or a gasket, which is advantageous in reducing the number of components of the cap assembly 30. The electrode terminal 50 includes a current collecting portion 51 for electrically connecting with the tab, an outer connecting portion 53 provided on the outer side surface 40b side of the top cover 40, and an intermediate portion 52 connecting the current collecting portion 51 and the outer connecting portion 53. The outer connecting portion 53 includes a bent section 53a and a confluence section 53b. Adjacent two battery cells 20 may be connected directly by respective bus bars 53b or by bus bars to respective bus bars 53b. In one example, the insulator 60 includes an outer portion 61, an extension 62, and an scarf joint 63. The outer portion 61, the extension portion 62 and the scarf joint 63 are connected to each other. The outer side portion 61 of the insulator 60 is located outside the electrode lead-out hole 41 and on the outer side surface 40b side. The extension 62 of the insulator 60 protrudes into the electrode lead-out hole 41 to form a sealing structure. The caulking portion 63 of the insulating member 60 is located outside the electrode lead-out hole 41 and on the inner side surface 40a side. The outer side 61 of the insulator 60 is connected to the bent section 53a. In one example, the outer portion 61, the extension portion 62, and the scarf joint 63 are an integrally formed structure. Alternatively, the insulator 60 may be manufactured by an injection molding process in one piece. Alternatively, the material of the insulator 60 is plastic, resin, or rubber.
In one embodiment, referring to fig. 6, the insulator 60 includes an inside spacer 61a disposed on a side of the bent section 53a adjacent to the top cover 40. The inner spacer 61a is fixedly connected to the top cover 40. The inner spacer 61a of the insulator 60 is fixedly connected to the bent section 53a. The inner spacer 61a insulates the bent section 53a from the top cover 40. Alternatively, the orthographic projection area of the inner spacer 61a is larger than the orthographic projection area of the folded section 53a in the thickness direction X. In one example, the bent section 53a may be fixedly connected to the inner partition 61a by means of an adhesive. In one example, the bent section 53a has a first connection hole 70. The inner spacer 61a includes a connecting post 80. The connection boss 80 of the inner spacer 61a is connected to the first connection hole 70. The top of the connection boss 80, which is far from the inner side partition 61a, has a flange having a size larger than that of the first connection hole 70, so that the connection boss 80 as a whole has a substantially "T" shape in cross section. A portion of the connecting stud 80 is located in the first connecting hole 70, and the flange is located at a side of the folded section 53a away from the inner side partition 61a and covers the first connecting hole 70, so that the connecting stud 80 is limited by the folded section 53a and is not easily separated from the first connecting hole 70, which is beneficial to improving the connection strength of the inner side partition 61a and the folded section 53a and improving the stretch-proof capability of the folded section 53a and the inner side partition 61a. The portion of the connection post 80 located within the first connection hole 70 is interference fit with the first connection hole 70. Alternatively, the number of connecting studs 80 is two. The two connecting studs 80 are spaced apart along the length of the top deck 40. The number and positions of the first coupling holes 70 are provided in one-to-one correspondence with the number and positions of the coupling studs 80. It is understood that the number of the connecting studs 80 may be more than three. In one example, the medial separator 61a includes a base 611 and a boss 612. The base 611 is adjacent to the top cover 40 and the boss 612 is adjacent to the bent segment 53a. The connecting stud 80 is disposed on the boss 612. In one example, the connecting stud 80 is provided on the bent section 53a, and the first connecting hole 70 is provided on the inner partition 61a. The bent section 53a is connected to the first connection hole 70 of the inner partition 61a by the connection boss 80, and it is also possible to achieve connection fixation of the bent section 53a and the inner partition 61a to each other. Alternatively, the insulating member 60 is formed at one time through an injection molding process, so that the connecting boss 80 and the inner spacer 61a are an integrally formed structure.
In one embodiment, referring to fig. 7, the insulator 60 has an outer spacer 61b disposed on a side of the bent section 53a remote from the top cover 40. The inner spacer 61a is connected to the outer spacer 61b to cover the folded section 53a. In one example, the inner and outer spacers 61a and 61b completely encapsulate the bending section 53a, that is, the bending section 53a is entirely located inside the connection structure formed by the inner and outer spacers 61a and 61b, so that the bending section 53a is limited by the common constraint of the inner and outer spacers 61a and 61b, which is beneficial to further improve the stretch-proof capability between the bending section 53a and the insulator 60 and reduce the possibility of the bending section 53a moving when subjected to external stretching force. In one example, the connection boss 80 is provided on the inner partition 61a, and the first connection hole 70 is provided on the bent section 53a. Alternatively, the first connection hole 70 is provided on the inner partition 61a, and the connection boss 80 is provided on the bent section 53a. The first connection hole 70 may be a through hole or a blind hole. In another example, the connection boss 80 is provided on the outer spacer 61b, and the first connection hole 70 is provided on the bent section 53a. Alternatively, the first connection hole 70 is provided on the outer spacer 61b, and the connection boss 80 is provided on the bent section 53a. The first connection hole 70 may be a through hole or a blind hole. In still another example, the connection boss 80 is provided on each of the inner and outer spacers 61a and 61b, and the first connection holes 70 are provided on the surface of the bent section 53a facing the inner spacer 61a and the surface facing the outer spacer 61b, and the respective first connection holes 70 may be blind holes not communicating with each other. Alternatively, the first connection holes 70 are provided on both the inner and outer spacers 61a and 61b, and the convex posts 80 are connected to the surfaces of the bent sections 53a facing the inner spacer 61a and the surfaces facing the outer spacer 61b. The first connection hole 70 may be a through hole or a blind hole. In this way, the inner and outer spacers 61a and 61b directly cover the bent section 53a and the inner and outer spacers 61a and 53a and/or the outer and bent sections 61b and 53a may further improve the connection strength and tensile resistance between the bent section 53a and the insulator 60 by connecting the boss 80 and the first connection hole 70. In one example, referring to fig. 10, a connection boss 80 is provided at the outer spacer 61b. The bent section 53a is provided with a first connection hole 70 matched with the connection boss 80. The first connection hole 70 penetrates the bent section 53a. The connecting boss 80 connects the inner and outer spacers 61a and 61b, which can improve the connection strength of the inner and outer spacers 61a and 61b and the connection strength of the insulator 60 and the bent section 53a. Alternatively, the insulator 60 is manufactured by an injection molding process, so that the inner spacer portion 61a, the outer spacer portion 61b, and the connection boss 80 form an integrally molded structure.
In one embodiment, referring to fig. 8, the insulator 60 has a relief opening 61c provided to the outer spacer 61b. A portion of the folded section 53a is exposed to the external environment through the relief opening 61c. The portion of the bent section 53a exposed to the external environment may serve as a contact point for facilitating the contact of the electrode terminal 50 with a contact of an external electrical device. In one example, the insulator 60 includes a connection boss 80 disposed between the inner and outer spacers 61a and 61b in the thickness direction X. Along the length direction of the top cover plate 40, one or both sides of the relief opening 61c are provided with connection posts 80. Alternatively, the relief openings 61c are hole structures, which may be rectangular or circular. Alternatively, relief opening 61c is a slot structure with a notch. The relief opening 61c penetrates the outer spacer 61b in the width direction of the roof panel 40. The notch of the relief opening 61c faces the bus bar section 53b.
In one embodiment, referring to fig. 9, the top cover 40 has an outer side 40b and a recess 42 recessed from the outer side 40b toward the inner side 40a in the thickness direction X. The bottom wall of the recess 42 surrounds the electrode lead-out hole 41. A portion of the insulator 60 is disposed within the recess 42. In one example, the insulator 60 includes an outer side portion 61, an extension portion 62 connected to the outer side portion 61, and an engagement portion 63. The extension 62 of the insulator 60 is partially disposed in the recess 42, and partially extends into the electrode lead-out hole 41. The electrode terminal 50 is connected to the cap plate 40 by the extension 62 and maintains a sealed state. The portion of the top cover plate 40 extending into the recess 42 through the extension portion 62 and the engagement portion 63 form a constraint limit for the insulating member 60, and the possibility of movement of the insulating member 60 in the axial direction of the electrode lead-out hole 41 when an external force is applied thereto is reduced. In one example, referring to fig. 6 and 13, the top cover plate 40 has a second connection hole 43 in communication with the recess 42. The second connection hole 43 extends in the thickness direction X. The insulator 60 has a connection post 64 connected to the second connection hole 43. The structure of the connection post 64 engaged with the second connection hole 43 may be advantageous for further improving the connection strength of the insulating member 60 and the top cover plate 40. The connection cylinder 64 is interference fit with the second connection hole 43. Alternatively, the number of the second connection holes 43 is plural. The plurality of second connection holes 43 are uniformly distributed around the electrode lead-out hole 41. The number of the connection columns 64 corresponds to the number of the second connection holes 43 one by one. In one example, the second connection hole 43 penetrates the inner side surface 40a of the top cover plate 40. The portion of the extension 62 located in the recess 42 and the scarf joint 63 are connected to the connection post 64, thereby further improving the connection strength of the insulator 60 and the top cover 40. Optionally, the extension portion 62, the connecting post 64, and the engagement portion 63 are integrally formed.
In one embodiment, referring to fig. 11 to 13, the top cap assembly 30 further includes an insulating plate 200. The insulating plate 200 is disposed on a side of the top deck plate 40 remote from the bent section 53a. The insulating plate 200 has a groove 201 corresponding to the electrode lead-out hole 41. The groove 201 is recessed from the surface of the insulating plate 200 toward the cap plate 40 in a direction away from the cap plate 40, and an annular cavity 300 surrounding the electrode lead-out hole 41 is formed between the groove 201 and the inner side surface 40a of the cap plate 40. The annular chamber 300 communicates with the electrode lead-out hole 41. The insulator 60 has an engagement portion 63 provided on the inner side surface 40a of the top cover 40. At least part of the scarf joint 63 protrudes into the annular cavity 300. In one example, the scarf joint 63 is in sealing engagement with the insulating plate 200, which on the one hand is beneficial to reduce the possibility of corrosion of the top cover plate 40 caused by the connection of the scarf joint 63 of the electrolyte insulator 60 and the insulating plate 200 passing through and contacting the top cover plate 40 when the top cover assembly 30 is applied to the battery cell 20; on the other hand, when the top cap assembly 30 is applied to the battery cell 20, it is advantageous to lengthen the creepage distance between the top cap plate 40 and the electrode assembly 22, and to reduce the possibility of a puncture short circuit between the top cap plate 40 and the electrode assembly 22. Alternatively, the insulating plate 200 has through holes corresponding to the electrode lead-out holes 41. The groove 201 is provided around the through hole and communicates with the through hole. The insulating plate 200 may be a plate-like structure.
In one embodiment, the electrode terminal 50 further includes an intermediate portion 52 connected to the outer connection portion 53. The intermediate portion 52 is at least partially disposed in the electrode lead-out hole 41. Referring to fig. 14 and 15, the intermediate portion 52 has a limit recess 90 at an edge thereof adjacent the top cover 40. The insulator 60 has a limit projection 100 that mates with the limit recess 90. The electrode terminal 50 is mutually engaged with the limit convex part 100 on the insulating member 60 through the limit concave part 90, which is beneficial to improving the connection strength of the electrode terminal 50 and the insulating member 60 and reducing the possibility of loosening and reducing the sealing performance of the connection between the electrode terminal 50 and the insulating member 60 caused by the movement of the electrode terminal 50 relative to the insulating member 60 along the thickness direction X when the electrode terminal 50 is acted by the external force along the thickness direction X. It will be appreciated that the edge of the intermediate portion 52 adjacent the top cover 40 has a spacing tab 100 and the insulator 60 has a spacing recess 90 that mates with the spacing tab 100. In one example, the bent section 53a is disposed perpendicular to the intermediate portion 52. In this way, when the outer connecting portion 53 receives a tensile force, the bending section 53a applies a force to the intermediate portion 52 mainly in the radial direction of the electrode lead-out hole 41, so that the possibility that the intermediate portion 52 receives a force in the axial direction of the electrode lead-out hole 41 is reduced, and further, the possibility that the intermediate portion 52 moves in the axial direction of the electrode lead-out hole 41 to cause loosening of the connection between the intermediate portion 52 and the insulator 60 and a decrease in sealability is reduced.
In one embodiment, the electrode terminal 50 is a sheet-like structure of an integrally molded structure. The electrode lead-out hole 41 is a bar-shaped hole extending in the longitudinal direction of the top cover plate 40. The electrode terminal 50 is directly hermetically connected to the cap plate 40 through an insulating member 60. When the bending section 53a has a sheet-like structure, the joint area with the insulating member 60 can be increased, which is advantageous in improving the connection strength between the bending section 53a and the insulating member 60. In one example, the converging section 53b intersects the bending section 53a, or the converging section 53b makes an angle of 180 ° with the bending section 53a. When the bus bar 53b and the bending bar 53a are disposed to intersect each other as an initial state, it is necessary to fold the bus bar 53b in the direction of the top cover 40 and to make the angle between the bus bar 53b and the bending bar 53a approximately 180 ° or equal to 180 ° in the process of connecting the two battery cells 20 in series or parallel. During the folding of the bus bar 53b, the bus bar 53b applies a tensile force to the bent portion 53a. Since the top cover 40 can limit the bending section 53a through the insulating member 60, when the bending section 53a is subjected to external tensile force, the tensile force is transmitted to the top cover 40 through the insulating member 60, so that the tensile force has little or no influence on the area of the bending section 53a near the electrode lead-out hole 41, that is, the area of the bending section 53a near the electrode lead-out hole 41 is subjected to little or no tensile force.
In one embodiment, referring to fig. 16, the cap assembly 30 includes a sealing structure (not shown). The sealing structure seals the electrode terminal 50 and the cap plate 40. The insulator 60 and the sealing structure are each independently provided. Alternatively, the sealing structure may be a gasket 400 or a gasket. The insulator 60 is disposed on the outer side 40b of the top cover 40 and is fixedly connected to the top cover 40. The insulating member 60 is fixedly connected to the bent section 53a. The insulating element 60 and the top cover 40 and the insulating element 60 and the bent section 53a can be connected and fixed by bonding or caulking. The material of the insulator 60 may be plastic, resin or rubber.
Referring to fig. 17, an embodiment of the present invention also provides a manufacturing method of the cap assembly 30, which includes:
passing the electrode terminal 50 having the outer connecting portion 53 through the electrode lead-out hole 41 of the cap plate 40 with the outer connecting portion 53 located outside the cap plate 40, the outer connecting portion 53 including a bent section 53a folded toward the cap plate 40;
the insulator 60 is fixedly connected to the top cover plate 40, and the bent section 53a is fixedly connected to the insulator 60.
The top cover plate 40 has an electrode lead-out hole 41 extending in the own thickness direction X. After the electrode terminal 50 passes through the electrode lead-out hole 41, the bent section 53a is spaced apart from the top cover 40 to form a gap. The electrode terminal 50 has an outer connecting portion 53, an intermediate portion 52, and a caulking portion 63. The bent section 53a of the outer connecting portion 53 is disposed so as to intersect with the intermediate portion 52. After the electrode terminal 50 passes through the electrode lead-out hole 41, at least part of the intermediate portion 52 is inserted into the electrode lead-out hole 41, and the current collecting portion 51 of the electrode terminal 50 is located on the inner side surface 40a side of the top cover plate 40.
The insulator 60 may be an additional separately provided structural member. The insulating member 60 is fixedly coupled to the cap plate 40 by bonding or caulking, and the electrode terminal 50 may be coupled and sealed to the cap plate 40 by an additionally provided sealing structure. In one example, the sealing structure may be a seal ring 400 or a gasket. Alternatively, after the assembly positioning work of the cap plate 40 and the electrode terminal 50 is completed, the insulating member 60 is injection-molded by using an injection molding process, so that the electrode terminal 50 is directly connected and sealed with the cap plate 40 through the insulating member 60. In one example, the insulator 60 includes an outer portion 61, an extension 62, and an scarf joint 63. The outer portion 61, the extension portion 62 and the scarf joint 63 are connected to each other. The outer side portion 61 of the insulator 60 is located outside the electrode lead-out hole 41 and on the outer side surface 40b side. The extension 62 of the insulator 60 protrudes into the electrode lead-out hole 41 to form a sealing structure. The insulator 60 itself is directly connected and secured to the top cover 40. While the portion of the insulator 60 located on the outer side surface 40b of the top cover plate 40 forms an outer side portion 61. In one embodiment, the injection molding material fills the gap between the bent section 53a and the top cover plate 40 and eventually forms the inside spacer 61a. The folded section 53a is fixedly connected to the inner partition 61a.
Because the insulating member 60 is fixedly connected with the top cover plate 40, and the bending section 53a is fixedly connected with the insulating member 60, when the bending section 53a of the electrode terminal 50 is acted by tensile force, the bending section 53a transmits the tensile force to the top cover plate 40 through the insulating member 60, so that the possibility that the bending section 53a is limited by the top cover plate 40 and moves in position is reduced, the part, close to the sealing structure, of the electrode terminal 50 is basically not easily influenced by the tensile force, and the possibility that the sealing performance between the electrode terminal 50 and the sealing structure is reduced or fails due to loosening of the connection between the electrode terminal 50 and the sealing structure is reduced.
While the invention has been described with reference to a preferred embodiment, various modifications may be made and equivalents may be substituted for elements thereof without departing from the scope of the invention, and in particular, the technical features set forth in the various embodiments may be combined in any manner so long as there is no structural conflict. The present invention is not limited to the specific embodiments disclosed herein, but encompasses all technical solutions falling within the scope of the claims.
Claims (19)
1. A cap assembly for a battery cell, the cap assembly comprising:
a top cover plate having an electrode lead-out hole extending in a thickness direction thereof;
the electrode terminal is of a single-layer sheet structure, is inserted into the electrode leading-out hole and is provided with an outer connecting part, and the outer connecting part comprises a bending section turned towards the top cover plate;
the insulation piece is fixedly connected with the top cover plate, and the insulation piece is fixedly connected with the bending section.
2. The header assembly of claim 1, wherein the insulator includes an inner spacer portion disposed on a side of the bent segment adjacent the header plate, the inner spacer portion being fixedly connected to the bent segment.
3. The header assembly of claim 2, wherein the insulator has an outer spacer portion disposed on a side of the bent segment remote from the header plate, the inner spacer portion being connected to the outer spacer portion to encase the bent segment.
4. The header assembly of claim 3, wherein the bent segment is integrally located inside a connection structure formed by the inner and outer spacers.
5. The header assembly of claim 3, wherein the insulator has a relief opening disposed in the outer spacer, a portion of the bent segment being exposed to an external environment through the relief opening.
6. The header assembly of claim 3, wherein the insulator further comprises a connection post disposed on the outer spacer, the bent section having a first connection hole formed therein, the connection post extending into the first connection hole.
7. The header assembly of claim 6, wherein the first connection hole extends through the bent section and the connection post connects the inner and outer spacers.
8. The header assembly of claim 2, wherein the bent segments are provided with connecting studs,
the inner side isolation part is provided with a first connecting hole, and the connecting convex column extends into the first connecting hole; and/or the number of the groups of groups,
the insulating piece has set up in the outside isolation part of one side of bending section keeping away from the lamina tecti, inboard isolation part with outside isolation part is connected in order to cladding the section of bending, outside isolation part is provided with first connecting hole, connect the projection stretch into first connecting hole.
9. The header assembly of claim 2, wherein the insulator further comprises a connection post disposed on the inner spacer, the bent section being provided with a first connection hole, the connection post extending into the first connection hole.
10. The header assembly of claim 1, wherein:
the electrode terminal further comprises an intermediate part connected with the outer connecting part, and the intermediate part is at least partially arranged in the electrode lead-out hole;
the edge, close to the top cover plate, of the middle part is provided with a limit concave part, and the insulating part is provided with a limit convex part matched with the limit concave part; or alternatively, the process may be performed,
the middle part is provided with a limit convex part close to the edge of the top cover plate, and the insulating part is provided with a limit concave part matched with the limit convex part.
11. The top cap assembly according to any one of claims 1 to 10, wherein the electrode terminal further comprises an intermediate portion at least partially disposed within the electrode lead-out hole, the bent section being disposed perpendicular to the intermediate portion.
12. The header assembly of any one of claims 1 to 10, wherein:
the top cover assembly further comprises an insulating plate, the top cover plate is provided with an outer side face and an inner side face, the insulating plate is arranged on one side, far away from the bending section, of the top cover plate, the insulating plate is provided with a groove corresponding to the electrode leading-out hole, an annular cavity surrounding the electrode leading-out hole is formed between the groove and the inner side face, the insulating piece is provided with an embedding portion, and at least part of the embedding portion stretches into the annular cavity.
13. The header assembly of any one of claims 1 to 10, wherein:
the top cover plate has an outer side surface, a recess recessed from the outer side surface in the thickness direction, and a part of the insulator is provided in the recess; or alternatively, the process may be performed,
the top cover plate is provided with an outer side face, a concave portion recessed in the thickness direction from the outer side face and a second connecting hole communicated with the concave portion, a part of the insulating piece is arranged in the concave portion, and the insulating piece is provided with a connecting column body connected with the second connecting hole.
14. The cap assembly according to any one of claims 1 to 10, wherein the electrode terminal is an integrally formed sheet-like structure; and/or the electrode terminal is hermetically connected with the top cover plate through the insulating member.
15. A battery cell comprising the cap assembly of any one of claims 1 to 14.
16. The battery cell of claim 15, wherein the electrode terminal further comprises a bus bar segment connected to the bent segment, the bus bar segment for electrical connection with a bus bar segment of an adjacent battery cell.
17. A battery module comprising the battery cell of claim 15 or 16.
18. An apparatus using a battery cell as a power source, comprising the battery cell of claim 15 or 16.
19. A method of manufacturing a header assembly, comprising:
the electrode terminal with the outer connecting part penetrates through the electrode leading-out hole of the top cover plate, the outer connecting part is positioned at the outer side of the top cover plate, and the outer connecting part comprises a bending section which is turned over towards the top cover plate;
and connecting and fixing the insulating piece on the top cover plate, and connecting and fixing the bending section with the insulating piece.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311034073.8A CN116937032A (en) | 2019-11-15 | 2019-11-15 | Top cover assembly, battery cell, battery module, device and manufacturing method |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911121475.5A CN112331993B (en) | 2019-11-15 | 2019-11-15 | Top cover assembly, battery cell, battery module, device and manufacturing method |
| CN202311034073.8A CN116937032A (en) | 2019-11-15 | 2019-11-15 | Top cover assembly, battery cell, battery module, device and manufacturing method |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911121475.5A Division CN112331993B (en) | 2019-11-15 | 2019-11-15 | Top cover assembly, battery cell, battery module, device and manufacturing method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN116937032A true CN116937032A (en) | 2023-10-24 |
Family
ID=74319723
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202311034073.8A Pending CN116937032A (en) | 2019-11-15 | 2019-11-15 | Top cover assembly, battery cell, battery module, device and manufacturing method |
| CN201911121475.5A Active CN112331993B (en) | 2019-11-15 | 2019-11-15 | Top cover assembly, battery cell, battery module, device and manufacturing method |
Family Applications After (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911121475.5A Active CN112331993B (en) | 2019-11-15 | 2019-11-15 | Top cover assembly, battery cell, battery module, device and manufacturing method |
Country Status (1)
| Country | Link |
|---|---|
| CN (2) | CN116937032A (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2024113298A1 (en) * | 2022-12-01 | 2024-06-06 | 宁德时代新能源科技股份有限公司 | End cover assembly, battery cell, battery and electrical device |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201466126U (en) * | 2009-04-30 | 2010-05-12 | 比亚迪股份有限公司 | Single cell and power cell pack comprising same |
| CN205752363U (en) * | 2016-05-17 | 2016-11-30 | 比亚迪股份有限公司 | Battery protecting apparatus, cover plate assembly and battery |
| CN207233789U (en) * | 2017-08-30 | 2018-04-13 | 宁德时代新能源科技股份有限公司 | Secondary cell and battery modules |
| KR102425218B1 (en) * | 2017-08-31 | 2022-07-26 | 삼성에스디아이 주식회사 | Secondary Battery |
| CN109659453B (en) * | 2017-10-10 | 2020-09-15 | 宁德时代新能源科技股份有限公司 | Secondary cell's top cap subassembly and secondary cell |
-
2019
- 2019-11-15 CN CN202311034073.8A patent/CN116937032A/en active Pending
- 2019-11-15 CN CN201911121475.5A patent/CN112331993B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN112331993A (en) | 2021-02-05 |
| CN112331993B (en) | 2023-09-05 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP2704230B1 (en) | Battery assembly, and vehicle | |
| KR102507879B1 (en) | Rechargeable battery module | |
| KR100872954B1 (en) | Power supply | |
| EP1744383B1 (en) | Electrical device with film covering and frame member | |
| EP1519430B1 (en) | Battery accomodation casing, battery module and assembled battery | |
| KR101627631B1 (en) | Rechargeable battery and module thereof | |
| WO2012164982A1 (en) | Secondary cell device | |
| CN112310517B (en) | Secondary battery, battery module, battery pack, device, and manufacturing method | |
| JP6104514B2 (en) | Secondary battery device | |
| US8822050B2 (en) | Electric storage apparatus | |
| US20200287194A1 (en) | Electrical connecting member housing case and battery module | |
| KR20160150405A (en) | Rechargeable battery and rechargeable battery module | |
| KR101072954B1 (en) | Rechargeable battery module | |
| CN113725530B (en) | Top cover assembly of power battery, power battery and battery module | |
| KR101666876B1 (en) | Rechargeable battery and module thereof | |
| CN112331993B (en) | Top cover assembly, battery cell, battery module, device and manufacturing method | |
| US20210328310A1 (en) | Electricity storage device and electricity storage module | |
| CN113258182B (en) | Battery, battery module, battery pack and electric vehicle | |
| CN210984767U (en) | Top cover assembly, secondary battery, battery module, battery pack and device | |
| JP6744101B2 (en) | Battery pack | |
| CN217544749U (en) | Battery module and electric vehicle | |
| CN214957231U (en) | Battery casing, power battery and electric vehicle | |
| CN218896716U (en) | Top cap subassembly of battery and have its battery | |
| CN217114627U (en) | Battery and electric device | |
| CN220021553U (en) | Battery monomer, battery and power consumption device |
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 |