CN217823029U - Top cover assembly and single battery - Google Patents
Top cover assembly and single battery Download PDFInfo
- Publication number
- CN217823029U CN217823029U CN202221618079.0U CN202221618079U CN217823029U CN 217823029 U CN217823029 U CN 217823029U CN 202221618079 U CN202221618079 U CN 202221618079U CN 217823029 U CN217823029 U CN 217823029U
- Authority
- CN
- China
- Prior art keywords
- orientation
- hole
- main body
- disposed
- flange
- 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.)
- Active
Links
- 239000000758 substrate Substances 0.000 claims abstract description 45
- 238000007789 sealing Methods 0.000 claims description 33
- 230000002093 peripheral effect Effects 0.000 claims description 15
- 239000012212 insulator Substances 0.000 claims description 14
- 238000009413 insulation Methods 0.000 claims description 12
- 238000000034 method Methods 0.000 abstract description 7
- 238000009434 installation Methods 0.000 description 7
- 238000005516 engineering process Methods 0.000 description 3
- 229910052751 metal Inorganic materials 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 238000003466 welding Methods 0.000 description 3
- 230000001174 ascending effect Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000004806 packaging method and process Methods 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000004146 energy storage Methods 0.000 description 1
- 238000001746 injection moulding Methods 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 238000005245 sintering Methods 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
Images
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
- H01M50/172—Arrangements of electric connectors penetrating the casing
- H01M50/174—Arrangements of electric connectors penetrating the casing adapted for the shape of the cells
- H01M50/176—Arrangements of electric connectors penetrating the casing adapted for the shape of the cells 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
- H01M50/184—Sealing members characterised by their shape or structure
-
- 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
- H01M50/543—Terminals
- H01M50/564—Terminals characterised by their manufacturing process
- H01M50/567—Terminals characterised by their manufacturing process by fixing means, e.g. screws, rivets or bolts
-
- 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
- H01M50/586—Means for preventing undesired use or discharge for preventing incorrect connections inside or outside the batteries inside the batteries, e.g. incorrect connections of electrodes
-
- 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)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Connection Of Batteries Or Terminals (AREA)
Abstract
The application discloses a top cover assembly and a single battery, wherein the top cover assembly comprises a top cover plate, a pole and an insulating part, the top cover plate comprises a base plate and an axial positioning part, the base plate is provided with a through hole, and the axial positioning part is connected to the base plate and surrounds the through hole; the pole column comprises a main body part and a flange, the main body part is inserted into the through hole, the flange surrounds the main body part, the flange is positioned on the inner side of the axial positioning part along the radial direction of the through hole and positioned between the substrate and the axial positioning part along the axial direction of the through hole; the insulating part is inserted in the through hole and surrounds the main body part, a first orientation structure is arranged between the insulating part and the main body part to limit the relative rotation between the insulating part and the main body part, and a second orientation structure is arranged between the insulating part and the substrate to limit the relative rotation between the insulating part and the substrate. The top cover assembly can simplify the process, and therefore the assembling efficiency is improved.
Description
Technical Field
The application relates to the technical field of energy storage devices, in particular to a top cover assembly and a single battery.
Background
The power battery is as electric automobile's energy supply device, one of electric automobile's important component parts, typical power battery includes the top cap subassembly, casing and electric core, the top cap subassembly is used for forming the cavity of placing the electric core with the casing jointly on the one hand, simultaneously still be used for realizing switching on of electric core and outside consumer, based on this, be provided with the utmost point post that can realize the electricity connection function on the top cap subassembly, for the negative pole post, it both needs to keep insulating with the top cap piece of top cap subassembly, need firm connection on the top cap piece again, therefore, the negative pole post among the correlation technique is connected with the metal connecting piece through insulating part usually, rethread metal connecting piece and top cap piece welded fastening, however, this kind of mode needs to realize through extra assembly process between insulating part and the utmost point post, and the fixed between insulating part and the metal connecting piece, production steps have been increased, thereby the assembly efficiency of top cap subassembly is influenced.
SUMMERY OF THE UTILITY MODEL
The present application is directed to solving at least one of the problems in the prior art. Therefore, the top cover assembly can reduce production steps and improve assembly efficiency of the top cover assembly.
The application also provides a single battery applying the top cover assembly.
According to the cap assembly in the first embodiment of the present application, comprising:
the top cover plate comprises a base plate and an axial positioning part, wherein the base plate is provided with a through hole, and the axial positioning part is connected to the base plate and surrounds the through hole;
the pole column comprises a main body part and a flange, the main body part is inserted into the through hole, the flange surrounds the main body part, the flange is located on the inner side of the axial positioning part along the radial direction of the through hole, and is located between the substrate and the axial positioning part along the axial direction of the through hole;
the insulating piece is inserted in the through hole and arranged around the main body part, a first orientation structure is arranged between the insulating piece and the main body part to limit the relative rotation between the insulating piece and the main body part, and a second orientation structure is arranged between the insulating piece and the substrate to limit the relative rotation between the insulating piece and the substrate.
According to the battery module of this application embodiment, have following beneficial effect at least:
be provided with first orientation structure between top cap subassembly's insulating part and the main part, first orientation structure can restrict the relative rotation between insulating part and the main part, still be provided with second orientation structure between insulating part and the base plate, the relative rotation between insulating part and the base plate can be restricted to the second orientation structure, thus, utmost point post can not rotate relative insulating part, also can not rotate with insulating part relative top cap piece together, realize the ascending location of rotation direction, combine base plate and axial positioning portion to the ascending location of utmost point post axial, make utmost point post can be fixed on the top cap piece, compare with the scheme that needs connect utmost point post and top cap piece through technologies such as welding, can simplify technology, thereby promote packaging efficiency.
In other embodiments of the present application, the first orientation structure includes a first positioning groove and a first positioning protrusion, one of the first positioning groove and the first positioning protrusion is disposed on an inner circumferential surface of the insulating member, the other of the first positioning groove and the first positioning protrusion is disposed on an outer circumferential surface of the main body, and the first positioning protrusion is located in the first positioning groove.
In another embodiment of the present application, the first orientation structure includes a first orientation surface and a second orientation surface, one of the first orientation surface and the second orientation surface is disposed on an inner circumferential surface of the insulating member, the other of the first orientation surface and the second orientation surface is disposed on an outer circumferential surface of the main body, and the first orientation surface and the second orientation surface are attached to each other.
In other embodiments of the present application, the second orientation structure includes a second positioning protrusion and a second positioning groove, one of the second positioning protrusion and the second positioning groove is disposed on the outer peripheral surface of the insulating member, the other of the second positioning protrusion and the second positioning groove is disposed on the hole wall of the through hole, and the second positioning protrusion is located in the second positioning groove.
In other embodiments of the present application, the second orientation structure includes a third orientation surface and a fourth orientation surface, one of the third orientation surface and the fourth orientation surface is disposed on the outer peripheral surface of the insulating member, the other of the third orientation surface and the fourth orientation surface is disposed on the hole wall of the through hole, and the third orientation surface is attached to the fourth orientation surface.
In other embodiments of the present application, the insulating member includes a first insulating portion and a second insulating portion, the first insulating portion is inserted into the through hole and disposed around the main body portion, the second insulating portion is connected around an outer side of the first insulating portion and located between the flange and the substrate along an axial direction of the through hole, and the flange abuts against the substrate through the second insulating portion;
the first orientation structure is arranged between the first insulation part and the main body part, and the second orientation structure is arranged between the first insulation part and the substrate.
In other embodiments of the present application, the axial positioning portion is connected to an inner side of the substrate facing the battery cell, and an outer end face of the insulating member away from the battery cell is not higher than an outer end face of the substrate away from the battery cell.
In other embodiments of the present application, an installation space is defined by the axial positioning portion and the substrate, a part of the installation space extends into the substrate to form an installation groove on the inner side of the substrate facing the battery core, the axial positioning portion surrounds the installation groove, and the flange is at least partially located in the installation groove.
In other embodiments of the present application, the top cap assembly further includes a sealing member, the sealing member and the insulating member are respectively located on two sides of the flange along the axial direction of the through hole, the sealing member includes a first sealing portion and a second sealing portion that are connected to each other, the first sealing portion is disposed between the main body portion and the axial positioning portion, the second sealing portion is disposed between the flange and the axial positioning portion, and the flange is abutted to the axial positioning portion through the second sealing portion.
According to the battery cell in the second embodiment of the present application, including:
a battery case;
the top cover component is covered and sealed on the battery shell;
and the battery core is positioned in the battery shell.
Additional aspects and advantages of the present application 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 present application.
Drawings
The present application is further described with reference to the following figures and examples, in which:
FIG. 1 is a perspective view of a cap assembly according to an embodiment of the present application;
FIG. 2 is an exploded view of the cap assembly of FIG. 1;
FIG. 3 is a cross-sectional view of a portion of the top flap of FIG. 1;
FIG. 4 is a cross-sectional view of the cap assembly of FIG. 1;
FIG. 5 is an enlarged view of area A of FIG. 4;
FIG. 6 is a cross-sectional view of a partial area of a top flap in another embodiment of the present application;
FIG. 7 is a sectional view of a portion of a cap assembly according to another embodiment of the present application;
fig. 8 is an exploded view of a unit cell in the embodiment of the present application.
Reference numerals are as follows:
the top cover assembly 100, the top cover sheet 110, the base plate 111, the through hole 1111, the second positioning groove 1112, the mounting groove 1113, the axial positioning portion 112, the vertical portion 1121, the horizontal portion 1122, the mounting space 113, the pole 120, the main body portion 121, the flange 122, the first positioning protrusion 123, the insulating member 130, the first positioning groove 131, the second positioning protrusion 132, the first insulating portion 133, the second insulating portion 134, the sealing member 140, the first sealing portion 141, and the second sealing portion 142;
a battery case 200;
and (3) an electric core 300.
Detailed Description
Reference will now be made in detail to the embodiments of the present application, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present application and are not to be construed as limiting the present application.
In the description of the present application, it should be understood that the positional descriptions referred to, for example, the directions or positional relationships indicated by upper, lower, front, rear, left, right, etc., are based on the directions or positional relationships shown in the drawings, and are only for convenience of description and simplification of the description, but do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and thus, should not be construed as limiting the present application.
In the description of the present application, the meaning of a plurality is one or more, the meaning of a plurality is two or more, and the above, below, exceeding, etc. are understood as excluding the present number, and the above, below, within, etc. are understood as including the present number. If the first and second are described for the purpose of distinguishing technical features, they are not to be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.
In the description of the present application, unless otherwise specifically limited, terms such as set, installed, connected and the like should be understood broadly, and those skilled in the art can reasonably determine the specific meanings of the above terms in the present application in combination with the specific contents of the technical solutions.
In the description of the present application, reference to the description of the terms "one embodiment," "some embodiments," "an illustrative embodiment," "an example," "a specific example," or "some examples," etc., means 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 present application. 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.
Referring to fig. 1 and 2, the cap assembly 100 includes a cap sheet 110, a terminal post 120 and an insulating member 130, the cap sheet 110 is used to enclose a battery housing of a single battery, the terminal post 120 is used to electrically connect an internal battery core and an external power consumption device, the insulating member 130 is used to insulate the terminal post 120 from the cap sheet 110, and the terminal post 120 can be positioned by the cap sheet 110 and the insulating member 130, which will be described in detail below with reference to the drawings.
The top cover 110 is a flat plate structure, made of metal material such as aluminum, and has both conductivity and strength to mount the post 120. Referring to fig. 2 and 3, the top cover sheet 110 includes a base plate 111 and an axial positioning portion 112, the base plate 111 is a main structure of the top cover sheet 110, and a through hole 1111 for installing the pole 120 is formed in the base plate, and the through hole 1111 may be a circular hole as shown in the figure. An axial positioning portion 112 is connected to one side of the substrate 111 in the thickness direction, for example, the lower side in the drawing, and is used for axially fixing the pole 120, and an installation space 113 can be defined between the axial positioning portion 112 and the substrate 111.
One end (e.g., the lower end) of the pole 120 is used to electrically connect to a tab of the battery cell, and the other end (e.g., the upper end) is used to electrically connect to an external electrical appliance. Referring to fig. 2, 4 and 5, the pole post 120 includes a main body portion 121 and a flange 122, wherein the flange 122 is disposed around the main body portion 121 and is used for cooperating with the axial positioning portion 112 to axially fix the pole post 120. At least the upper end of main body 121 protrudes from flange 122 along the axial direction of pole post 120, and as shown in fig. 5 for example, the upper end of main body 121 is inserted into through hole 1111 and exposed from through hole 1111, so as to be able to connect to an external device, and it should be noted that the upper end of main body 121 exposed from through hole 1111 means that the upper end is in a contact state, which may be beyond the upper surface of substrate 111 as shown in fig. 5, or may be lower than or flush with the upper surface of substrate 111.
The flange 122 is located inside the axial positioning portion 112 along the radial direction of the through hole 1111 and located between the base plate 111 and the axial positioning portion 112 along the axial direction of the through hole 1111, that is, the flange 122 is located in the installation space 113, specifically, both axial ends of the flange are provided with planes, the flange 122 abuts against the lower surface of the base plate 111 through the upper plane and abuts against the axial positioning portion 112 through the lower plane, so that the axial positioning portion 112 and the base plate 111 can limit the axial movement of the pole post 120. It should be noted that, when the pole 120 is described to abut against the top cover 110, the pole 120 and the top cover 110 are prevented from being directly conducted by means of an insulating member such as the insulating member 130.
The insulating member 130 is located between the terminal post 120 and the top cover 110, specifically, inserted into the through hole 1111, and disposed around the main body 121, so as to separate the terminal post 120 from the top cover 110, thereby preventing the terminal post 120 from being in direct contact with the top cover 110 to cause short circuit. The insulating member 130 may be formed in various manners, and in some embodiments, the insulating member 130 is an insulating layer formed on the outer circumferential surface of the terminal 120 through an integral molding process, for example, a plastic layer formed through an injection molding process, or a ceramic layer formed through a sintering process, so as to reduce the assembly process between the insulating member 130 and the terminal 120. The insulator 130 may also be separately molded and then assembled to the pole 120.
Be provided with first orientation structure between insulating part 130 and the main part 121, first orientation structure can restrict the relative rotation between insulating part 130 and the main part 121, still be provided with the second orientation structure between insulating part 130 and the base plate 111, the relative rotation between second orientation structure can restrict insulating part 130 and the base plate 111, so, utmost point post 120 neither can rotate relative insulating part 130, also can not rotate relative top cover plate 110 with insulating part 130 together, realize the complete positioning in the direction of rotation, combine above-mentioned base plate 111 and axial location portion 112 to the complete positioning in the axial of utmost point post 120, utmost point post 120 can be fixed on top cover plate 110, compare with the scheme that needs to connect utmost point post 120 and top cover plate 110 through processes such as welding, can the simplification technology, thereby promote the packaging efficiency.
As a specific example of the first orientation structure, it includes a first positioning groove 131 and a first positioning protrusion 123, one of the first positioning groove 131 and the first positioning protrusion 123 is disposed on the inner circumferential surface of the insulating member 130, the other of the first positioning groove 131 and the first positioning protrusion 123 is disposed on the outer circumferential surface of the main body portion 121, and the first positioning protrusion 123 is disposed in the first positioning groove 131 to limit the relative rotation between the pole post 120 and the insulating member 130. As shown in fig. 2 and 5 as an example, the outer circumferential surface of the body part 121, specifically, the outer circumferential surface of the upper end of the body part 121 is provided with a first positioning protrusion 123, and the insulating member 130 is provided with a first positioning groove 131 around the inner circumferential surface of the upper end. First location arch 123 can be the rectangle arch in the figure, and first constant head tank 131 is the rectangle recess correspondingly, but this application does not restrict the shape of location arch and constant head tank, only need can form the grafting cooperation relation of arch and recess can.
As another specific embodiment of the first orientation structure, the first orientation structure includes a first orientation surface and a second orientation surface, one of the first orientation surface and the second orientation surface is disposed on the inner circumferential surface of the insulating member 130, the other of the first orientation surface and the second orientation surface is disposed on the outer circumferential surface of the main body portion 121, and the first orientation surface and the second orientation surface are attached to limit the relative rotation between the post 120 and the insulating member 130. For example, the outer circumferential surface of the body part 121, specifically, the outer circumferential surface of the upper end of the body part 121 is provided with a first positioning surface, and the insulating member 130 is provided with a second positioning surface around the inner circumferential surface of the upper end. The first positioning surface and the second positioning surface may be planes parallel to the axial direction of the pole 120.
Similar with above-mentioned first location arch 123 and first locating groove 131, first locating surface and second locating surface all can set up to a plurality ofly to increase the convenience when location ability and utmost point post 120 and insulating part 130 assemble, at this moment, the upper end of utmost point post 120 can be the rectangle structure.
As an embodiment of the second orientation structure, the second orientation structure includes a second positioning protrusion 132 and a second positioning groove 1112, one of the second positioning protrusion 132 and the second positioning groove 1112 is disposed on the outer circumferential surface of the insulating element 130, the other of the second positioning protrusion 132 and the second positioning groove 1112 is disposed on the wall of the through hole 1111, and the second positioning protrusion 132 is located in the second positioning groove 1112 to limit the relative rotation between the insulating element 130 and the top cover plate 110. Taking fig. 2 and fig. 5 as an example, the outer peripheral surface of the insulating member 130, specifically, the outer peripheral surface corresponding to the hole wall of the through hole 1111, is provided with a second positioning protrusion 132, and the hole wall of the through hole 1111 is provided with a second positioning groove 1112.
The second positioning protrusion 132 and the second positioning groove 1112 may be provided in plural, so as to increase the positioning capability and the convenience when the insulating member 130 is assembled with the top cover sheet 110.
It should be noted that the shapes and the numbers of the first positioning protrusions 123 and the second positioning protrusions 132 may be the same or different.
As another specific embodiment of the second orientation structure, the first orientation structure includes a third orientation surface and a fourth orientation surface, one of the third orientation surface and the fourth orientation surface is disposed on the outer peripheral surface of the insulation member 130, the other of the third orientation surface and the fourth orientation surface is disposed on the hole wall of the through hole 1111, and the third orientation surface and the fourth orientation surface are attached to each other and can also limit the relative rotation between the insulation member 130 and the top cover sheet 110.
Similar to the second positioning protrusion 132 and the second positioning groove 1112 described above, the third positioning surface and the fourth positioning surface may be provided in plurality to increase the positioning capability and the convenience when the insulating member 130 is assembled with the top cover sheet 110, and at this time, the through hole 1111 may be a rectangular hole.
As a specific example of the axial positioning portion 112, referring to fig. 3, the axial positioning portion 112 includes a vertical portion 1121 and a horizontal portion 1122, a mounting space 113 can be defined between the axial positioning portion 112 and the substrate 111 to accommodate the flange 122 of the pole 120, an upper surface of the flange 122 can be abutted with the substrate 111, and a lower surface can be abutted with the horizontal portion 1122 of the pole 120, so as to achieve axial fixation of the pole 120. The axial positioning portion 112 and the substrate 111 may be connected as an integral structure, for example, a cylindrical thin-walled structure is formed on the lower surface of the substrate 111, the thin-walled structure is disposed around the through hole 1111, a lower portion of the thin-walled structure is bent inward in the radial direction, and the bent portion forms the horizontal portion 1122.
The insulation between the post 120 and the top cover sheet 110 is accomplished by the insulating member 130, and at this time, the insulating member 130 covers the outer circumferential surface of the post 120 that can directly contact the top cover sheet 110. In other embodiments, the insulator 130 may also cooperate with other components, such as a seal 140 described below, to collectively provide insulation between the post 120 and the top cover sheet 110, in which case the insulator 130 covers a portion of the outer peripheral surface of the post 120 that can directly contact the top cover sheet 110. As a specific example of the insulating member 130, referring to fig. 3 and 5, the insulating member 130 includes a first insulating portion 133 and a second insulating portion 134, the first insulating portion 133 is disposed along the axial direction of the pole 120 and is inserted into the through hole 1111, and is disposed around the main body portion 121, so as to isolate the upper end of the main body portion 121 from the substrate 111. The second insulating portion 134 is connected to the outer side of the first insulating portion 133 in a surrounding manner and is arranged along the radial direction of the pole 120, the second insulating portion 134 is located between the flange 122 and the base plate 111, so that the flange 122 is isolated from the base plate 111, and meanwhile, the flange 122 is abutted to the base plate 111 through the second insulating portion 134, so that the axial positioning of the flange 122 is realized on the basis of ensuring the insulation.
Based on the above structure, a first orientation structure is disposed between the first insulating portion 133 and the main body portion 121, and a second orientation structure is disposed between the first insulating portion 133 and the substrate 111, and as shown in the figure as an example, the inner circumferential surface of the first insulating portion 133 is provided with a first positioning groove 131, the outer circumferential surface of the upper end of the main body portion 121 is provided with a first positioning protrusion 123, the inner circumferential surface of the first insulating portion 133 is provided with a second positioning protrusion 132, and the hole wall of the through hole 1111 is provided with a second positioning groove 1112.
In some embodiments, the axial positioning portion 112 is connected to an inner side of the substrate 111 facing the battery cell 300, for example, a lower side in the drawing, and an outer end surface of the insulating member 130 away from the battery cell 300 is not higher than an outer end surface of the substrate 111 away from the battery cell 300, so that the axial positioning portion 112 and the insulating member 130 can be prevented from protruding out of the outer end surface of the substrate 111 to form a protruding structure, the outer end surface of the substrate 111 is more regular, and the assembly of the single battery cell into the battery module is facilitated. Accordingly, when the upper end of the terminal post 120 is inserted into the through hole 1111, the end surface of the upper end may be flush with the outer end surface of the substrate 111, lower than the outer end surface of the substrate 111, or slightly higher than the outer end surface of the substrate 111, and for the latter two cases, the height difference between the end surface of the upper end of the terminal post 120 and the outer end surface of the substrate 111 should be controlled within a predetermined range, for example, within 1mm to 3mm, so as to avoid the outer end surface of the substrate 111 forming a significant uneven structure.
Based on the above structure, in some further embodiments, referring to fig. 6 and 7, a portion of the mounting space 113 extends into the substrate 111 to form a mounting groove 1113 on the inner side of the substrate 111 facing the battery cell 300, the axial positioning portion 112 surrounds the mounting groove 1113, that is, the thickness of the substrate 111 at the inner ring of the axial positioning portion 112 is smaller than the thickness of the substrate 111 at the outer ring of the axial positioning portion 112, and the flange 122 is partially or completely located in the mounting groove 1113, compared with the embodiment shown in fig. 5, in this embodiment, the flange 122 is mounted by using a portion of the thickness space of the substrate 111, so that the total height of the terminal post 120 can be reduced, the total thickness of the top cap assembly 100 can be reduced, and the height of the battery cell can be increased on the basis of the unchanged total height of the battery cell, so as to increase the energy density of the battery cell.
Referring to fig. 2, 5 and 7, the top cap assembly 100 further includes a sealing member 140, the pole 120 and the top cap sheet 110 are insulated by the insulating member 130 and the sealing member 140 together, and are sealed by the sealing member 140, specifically, in the axial direction of the through hole 1111, the sealing member 140 and the insulating member 130 are respectively located on two sides of the flange 122, so as to respectively realize insulation between the flange 122 and the substrate 111, and insulation between the flange 122 and the axial positioning portion 112, specifically, the sealing member 140 includes a first sealing portion 141 and a second sealing portion 142 connected to each other, the first sealing portion 141 is arranged in the axial direction of the pole 120 and is located between the main body portion 121 and the axial positioning portion 112, for example, when the lower end of the main body 121 also protrudes toward the electric core relative to the flange 122, the first sealing portion 141 is located between the outer peripheral surface of the lower end of the main body portion 121 and the horizontal portion 1122 of the axial positioning portion 112, and when the lower end of the main body 121 is flush with the lower surface of the flange 122, the first sealing portion 141 is located between the outer peripheral surface of the lower end of the main body portion 121 and the vertical portion 1121 of the axial positioning portion 112. The second sealing portion 142 is connected to the outer side of the first sealing portion 141 and is disposed along the radial direction of the pole 120, the second sealing portion 142 is disposed between the flange 122 and the axial positioning portion 112, for example, between the flange 122 and the horizontal portion 1122 of the axial positioning portion 112, and at the same time, the flange 122 is abutted against the axial positioning portion 112 by the second sealing portion 142, thereby achieving the axial positioning of the flange 122 while ensuring insulation.
The embodiment of the present application further provides a single battery, which includes a battery case 200, a top cap assembly 100 and a battery cell 300, wherein the top cap assembly 100 is connected to the opening of the battery case 200 through welding or the like, so as to define a mounting cavity together with the battery case, and the battery cell 300 is located in the mounting cavity.
The embodiments of the present application have been described in detail with reference to the drawings, but the present application is not limited to the embodiments, and various changes can be made within the knowledge of those skilled in the art without departing from the spirit of the present application. Furthermore, the embodiments and features of the embodiments of the present application may be combined with each other without conflict.
Claims (10)
1. A header assembly, comprising:
the top cover plate comprises a base plate and an axial positioning part, wherein the base plate is provided with a through hole, and the axial positioning part is connected to the base plate and surrounds the through hole;
the pole column comprises a main body part and a flange, the main body part is inserted into the through hole, the flange surrounds the main body part, the flange is positioned on the inner side of the axial positioning part along the radial direction of the through hole and positioned between the substrate and the axial positioning part along the axial direction of the through hole;
the insulating part is inserted in the through hole and arranged around the main body part, a first orientation structure is arranged between the insulating part and the main body part so as to limit the relative rotation between the insulating part and the main body part, and a second orientation structure is arranged between the insulating part and the substrate so as to limit the relative rotation between the insulating part and the substrate.
2. The header assembly of claim 1, wherein the first orientation feature comprises a first detent recess and a first detent projection, one of the first detent recess and the first detent projection being disposed on an inner peripheral surface of the insulator and the other of the first detent recess and the first detent projection being disposed on an outer peripheral surface of the body portion, the first detent projection being disposed within the first detent recess.
3. The header assembly of claim 1, wherein the first orientation feature comprises a first orientation surface and a second orientation surface, one of the first orientation surface and the second orientation surface being disposed on an inner peripheral surface of the insulator, the other of the first orientation surface and the second orientation surface being disposed on an outer peripheral surface of the body portion, the first orientation surface and the second orientation surface being in engagement.
4. The lid assembly of claim 1, wherein the second orientation feature comprises a second detent protrusion and a second detent recess, one of the second detent protrusion and the second detent recess being disposed on the outer peripheral surface of the insulator, the other of the second detent protrusion and the second detent recess being disposed on the wall of the through hole, the second detent protrusion being located within the second detent recess.
5. The top cap assembly of claim 1, wherein the second orientation feature includes a third orientation surface and a fourth orientation surface, one of the third orientation surface and the fourth orientation surface is disposed on the outer periphery of the insulator, the other of the third orientation surface and the fourth orientation surface is disposed on the wall of the through hole, and the third orientation surface and the fourth orientation surface are engaged.
6. The header assembly of claim 1, wherein the insulator includes a first insulator portion inserted into the through hole and disposed around the main body portion, and a second insulator portion connected around an outer side of the first insulator portion and located between the flange and the base plate in an axial direction of the through hole, the flange abutting the base plate through the second insulator portion;
the first orientation structure is arranged between the first insulation part and the main body part, and the second orientation structure is arranged between the first insulation part and the substrate.
7. The top cap assembly of claim 1, wherein the axial positioning portion is connected to an inner side of the substrate facing the cell, and an outer end face of the insulator away from the cell is no higher than an outer end face of the substrate away from the cell.
8. The header assembly of claim 7, wherein the axial locating portion and the base plate define a mounting space, a portion of the mounting space extending into the base plate to form a mounting slot on an inner side of the base plate facing the cell, the axial locating portion surrounding the mounting slot, and the flange at least partially positioned within the mounting slot.
9. The header assembly according to claim 1, further comprising a sealing member, the sealing member and the insulator being located on both sides of the flange in an axial direction of the through hole, respectively, the sealing member including a first sealing portion and a second sealing portion connected to each other, the first sealing portion being disposed between the main body portion and the axial positioning portion, the second sealing portion being disposed between the flange and the axial positioning portion, the flange abutting against the axial positioning portion through the second sealing portion.
10. A battery cell, comprising:
a battery case;
the cap assembly of any one of claims 1 to 9, a cap sealed to the battery housing;
and the battery core is positioned in the battery shell.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221618079.0U CN217823029U (en) | 2022-06-24 | 2022-06-24 | Top cover assembly and single battery |
| PCT/CN2023/074622 WO2023246111A1 (en) | 2022-06-24 | 2023-02-06 | Top cover assembly and battery cell |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221618079.0U CN217823029U (en) | 2022-06-24 | 2022-06-24 | Top cover assembly and single battery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217823029U true CN217823029U (en) | 2022-11-15 |
Family
ID=83994240
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221618079.0U Active CN217823029U (en) | 2022-06-24 | 2022-06-24 | Top cover assembly and single battery |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN217823029U (en) |
| WO (1) | WO2023246111A1 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023246111A1 (en) * | 2022-06-24 | 2023-12-28 | 欣旺达动力科技股份有限公司 | Top cover assembly and battery cell |
| CN118281506A (en) * | 2024-04-18 | 2024-07-02 | 重庆太蓝新能源有限公司 | Pole, cover plate assembly, battery and forming method of battery |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP6066283B2 (en) * | 2012-12-07 | 2017-01-25 | 台達電子工業股▲ふん▼有限公司Ｄｅｌｔａｅｌｅｃｔｒｏｎｉｃｓ，Ｉｎｃ． | Fixing structure and battery manufacturing method |
| CN111244342A (en) * | 2020-03-20 | 2020-06-05 | 深圳市科达利实业股份有限公司 | Sealed power battery apron |
| CN211907577U (en) * | 2020-05-21 | 2020-11-10 | 深圳市科达利实业股份有限公司 | Edge rolling battery cover plate and battery |
| CN214280140U (en) * | 2021-02-05 | 2021-09-24 | 常州瑞德丰精密技术有限公司 | Top cover assembly and power battery |
| CN215911558U (en) * | 2021-08-31 | 2022-02-25 | 蜂巢能源科技有限公司 | Battery cover and battery module with same |
| CN215955380U (en) * | 2021-08-31 | 2022-03-04 | 蜂巢能源科技有限公司 | Battery cover plate and battery |
| CN114464937A (en) * | 2022-02-21 | 2022-05-10 | 欣旺达电动汽车电池有限公司 | Top cover assembly and single battery |
| CN217823029U (en) * | 2022-06-24 | 2022-11-15 | 欣旺达电动汽车电池有限公司 | Top cover assembly and single battery |
-
2022
- 2022-06-24 CN CN202221618079.0U patent/CN217823029U/en active Active
-
2023
- 2023-02-06 WO PCT/CN2023/074622 patent/WO2023246111A1/en unknown
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023246111A1 (en) * | 2022-06-24 | 2023-12-28 | 欣旺达动力科技股份有限公司 | Top cover assembly and battery cell |
| CN118281506A (en) * | 2024-04-18 | 2024-07-02 | 重庆太蓝新能源有限公司 | Pole, cover plate assembly, battery and forming method of battery |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2023246111A1 (en) | 2023-12-28 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN217823029U (en) | Top cover assembly and single battery | |
| US11482761B2 (en) | Secondary battery and battery module | |
| CN109659453B (en) | Secondary cell's top cap subassembly and secondary cell | |
| US10490780B2 (en) | Cap assembly for a second battery and second battery | |
| CN216450730U (en) | Top cover assembly and battery | |
| US20230006290A1 (en) | Battery top cover structure and assembly method thereof | |
| CN215911482U (en) | Battery cover and battery module with same | |
| EP3671887B1 (en) | Top cover assembly and secondary battery | |
| WO2022160297A1 (en) | Battery pack and manufacturing method therefor | |
| CN214898627U (en) | Secondary battery and top cover structure thereof | |
| CN114464937A (en) | Top cover assembly and single battery | |
| CN113629329A (en) | Composite pole, top cover and battery | |
| CN217606926U (en) | Secondary cell top cap and secondary cell | |
| CN216311920U (en) | Composite pole, top cover and battery | |
| CN219575770U (en) | Battery cover plate assembly capable of being assembled rapidly | |
| CN219303797U (en) | End cover assembly, battery monomer and energy storage device | |
| CN112687994B (en) | Button cell | |
| CN113471582A (en) | Top cover assembly and lithium ion battery based on top cover assembly | |
| CN219575771U (en) | Welded battery cover plate assembly | |
| CN218648044U (en) | Cover plate assembly of secondary battery, secondary battery and electronic device | |
| CN109728209B (en) | Secondary cell's top cap subassembly and secondary cell | |
| CN220895653U (en) | Top cover assembly of power battery and power battery | |
| CN220042048U (en) | Cover plate assembly and battery cell with same | |
| CN221447234U (en) | Cylindrical battery and power supply module | |
| CN217158370U (en) | Top cover assembly and single battery |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address |
Address after: 518000 1-2 Floor, Building A, Xinwangda Industrial Park, No. 18 Tangjianan Road, Gongming Street, Guangming New District, Shenzhen City, Guangdong Province Patentee after: Xinwangda Power Technology Co.,Ltd. Address before: 518000 Xinwangda Industrial Park, No.18, Tangjia south, Gongming street, Guangming New District, Shenzhen City, Guangdong Province Patentee before: SUNWODA ELECTRIC VEHICLE BATTERY Co.,Ltd. |
|
| CP03 | Change of name, title or address |