CN216354473U - Battery top cap structure and battery - Google Patents
Battery top cap structure and battery Download PDFInfo
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- CN216354473U CN216354473U CN202122410089.7U CN202122410089U CN216354473U CN 216354473 U CN216354473 U CN 216354473U CN 202122410089 U CN202122410089 U CN 202122410089U CN 216354473 U CN216354473 U CN 216354473U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
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Abstract
A battery top cover structure and a battery relate to the technical field of lithium ion battery cover plates. The battery top cover structure comprises a top cover plate, a positive piece and a negative piece; an anode injection molding glue is arranged between the top cover plate and the anode piece, and the top cover plate, the anode injection molding glue and the anode piece are formed by integral injection molding; the negative pole piece is provided with the top cap piece with be provided with the negative pole between the negative pole piece and glue, just top cap piece, negative pole glue of moulding plastics with the negative pole piece adopts an organic whole to mould plastics and forms. The battery includes a battery top cap structure. The utility model aims to provide a battery top cover structure and a battery, and solves the technical problems of complex structure, high assembly difficulty and low quality rate of the battery top cover in the prior art to a certain extent.
Description
Technical Field
The utility model relates to the technical field of lithium ion battery cover plates, in particular to a battery top cover structure and a battery.
Background
With the increasing maturity of lithium ion battery technology, lithium ion batteries are widely used in the field of electric vehicles as power batteries.
The existing battery top cover comprises components such as a positive pole post, a negative pole post, a positive riveting block, a negative riveting block, a smooth aluminum sheet, a sealing ring, an explosion-proof valve, positive and negative lower plastic cement and the like, and the battery top cover is complex in structure, high in assembly difficulty, low in quality rate and the like.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a battery top cover structure and a battery, and solves the technical problems of complex structure, high assembly difficulty and low quality rate of the battery top cover in the prior art to a certain extent.
In order to achieve the purpose, the utility model provides the following technical scheme:
a battery top cover structure comprises a top cover plate, a positive piece and a negative piece;
an anode injection molding glue is arranged between the top cover plate and the anode piece, and the top cover plate, the anode injection molding glue and the anode piece are formed by integral injection molding;
the negative pole piece is provided with the top cap piece with be provided with the negative pole between the negative pole piece and glue, just top cap piece, negative pole glue of moulding plastics with the negative pole piece adopts an organic whole to mould plastics and forms.
In any of the above technical solutions, optionally, the top cover sheet is provided with two pole holes; one of the pole holes is matched with the positive pole injection molding glue, and the other pole hole is matched with the negative pole injection molding glue;
the top surface of the top cover plate is provided with a top plate groove communicated with the pole hole; and/or the bottom surface of the top cover plate is provided with a bulge corresponding to the pole hole.
In any of the above technical solutions, optionally, the top surface of the top cover plate is provided with a rotation stopping groove matched with the positive pole piece or the negative pole piece.
In any of the above technical solutions, optionally, the top plate groove and the rotation stopping groove are respectively disposed on two sides of the pole hole.
In any of the above technical solutions, optionally, the protrusion is annular, and the pole hole passes through the protrusion;
or the number of the bulges is multiple, and the multiple bulges are arranged along the circumferential direction of the pole hole.
In any of the above technical solutions, optionally, the positive injection molding compound and/or the negative injection molding compound are integrally injection molded plastic;
the integral injection molding plastic comprises a plastic body part and a back reinforcing part connected with the plastic body part; the plastic body part is arranged between the top surface of the top cover plate and the anode part, or the plastic body part is arranged between the top surface of the top cover plate and the cathode part; the back reinforcing part is arranged on the bottom surface of the top cover plate.
In any of the above technical solutions, optionally, the battery top cover structure further includes a lower plastic connected to the top cover sheet;
the back reinforcing part is provided with a back reinforcing column matched with the lower plastic; and/or the plastic body part is provided with a back body column matched with the lower plastic;
the lower plastic is fixedly connected with the integral injection molding plastic in a hot melting mode;
the lower plastic is made of PP or PPS;
the lower plastic is provided with a positioning column matched with the top cover plate.
In any of the above technical solutions, optionally, the top cover sheet subjected to surface treatment is respectively connected with the positive injection molding glue and the negative injection molding glue by injection molding;
the positive piece subjected to surface treatment is connected with the positive injection molding glue in an injection molding manner;
the negative piece subjected to surface treatment is connected with the negative injection molding glue in an injection molding manner;
the positive injection molding glue and the negative injection molding glue are injection molding parts.
In any of the above technical solutions, optionally, the top cover sheet is provided with an explosion-proof valve; an explosion-proof valve patch is arranged on the explosion-proof valve;
or the top cover plate is a polished aluminum plate;
or the material of the negative pole piece comprises a copper-aluminum composite plate.
A battery includes a battery top cap structure.
The utility model has the following beneficial effects:
the battery top cover structure and the battery provided by the utility model are formed by integrally injection molding the top cover plate, the positive electrode injection molding glue and the positive electrode piece, and are formed by integrally injection molding the top cover plate, the negative electrode injection molding glue and the negative electrode piece, so that the structure is relatively simple, the number of parts of the battery top cover structure is greatly reduced, the assembly difficulty is reduced, and the excellent product rate of the battery top cover structure is improved to a certain extent.
In order to make the aforementioned and other objects, features and advantages of the present application more comprehensible, preferred embodiments accompanied with figures are described in detail below.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.
Fig. 1 is a schematic structural diagram of a battery top cover structure according to an embodiment of the present invention;
fig. 2 is an exploded view of the top cap structure of the battery shown in fig. 1;
fig. 3 is a schematic structural diagram of a battery top cover structure in an assembled state according to an embodiment of the present invention;
FIG. 4 is a schematic structural diagram of a top cover sheet according to an embodiment of the present invention;
FIG. 5 is a cross-sectional view of the battery top cover structure shown in FIG. 4;
fig. 6 is a partially enlarged view of the battery top cover structure shown in fig. 5.
Icon: 101-a top cover sheet; 102-a positive pole piece; 103-negative pole piece; 104-lower plastic cement; 105-an explosion-proof valve; 106-explosion proof valve patch; 107-positive pole injection molding glue; 108-negative pole injection molding glue;
201-top sheet groove; 202-a rotation stopping groove; 203-polar hole; 204-bump;
301-backside reinforcement pillars; 302-back body posts; 303-backside reinforcement.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the utility model, as claimed, but is merely representative of selected embodiments of the utility model. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings or orientations or positional relationships that the products of the present invention are conventionally placed in use, and are only for convenience of describing the present invention and simplifying the description, but do not indicate or imply that the device or element to which the description refers must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.
Furthermore, the terms "horizontal", "vertical", "overhang" and the like do not imply that the components are required to be absolutely horizontal or overhang, but may be slightly inclined. For example, "horizontal" merely means that the direction is more horizontal than "vertical" and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.
In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Some embodiments of the utility model are described in detail below with reference to the accompanying drawings. The embodiments described below and the features of the embodiments can be combined with each other without conflict.
Examples
The embodiment provides a battery top cover structure and a battery; referring to fig. 1 to 6, fig. 1 is a schematic structural diagram of a top cover structure of a battery provided in the present embodiment, and fig. 2 is an exploded view of the top cover structure of the battery shown in fig. 1; fig. 3 is a schematic structural diagram of a battery top cover structure in an assembled state according to the present embodiment; fig. 4 is a schematic structural diagram of the top cover plate provided in the present embodiment, and in order to show the structure more clearly, fig. 5 is a cross-sectional view of the battery top cover structure shown in fig. 4, and fig. 6 is a partially enlarged view of the battery top cover structure shown in fig. 5.
The battery top cover structure provided by the embodiment is used for lithium ion batteries, especially for lithium ion batteries of electric vehicles.
Referring to fig. 1 to 6, the battery top cover structure includes a top cover sheet 101, a positive electrode member 102, and a negative electrode member 103.
A positive injection molding glue 107 is arranged between the top cover plate 101 and the positive piece 102, and the top cover plate 101, the positive injection molding glue 107 and the positive piece 102 are formed by integral injection molding.
Be provided with negative pole injection molding between top sheet 101 and the negative pole piece 103 and glue 108, and top sheet 101, negative pole injection molding glue 108 and negative pole piece 103 adopt integrative moulding plastics to form.
Optionally, the material of the negative pole piece 103 includes a copper-aluminum composite plate; the copper-aluminum composite plate is adopted for the negative pole piece 103, so that the cost of the negative pole piece 103 is reduced to a certain extent, and the cost of the battery top cover structure is further reduced.
In this embodiment the battery top cap structure moulds plastics through top cap piece 101, anodal injection moulding and glues 107 and anodal piece 102 and adopt an organic whole to mould plastics and form to and mould plastics through top cap piece 101, negative pole injection moulding and glue 108 and negative pole piece 103 and adopt an organic whole to form, and its structure is simple relatively, has greatly reduced the part quantity of battery top cap structure, has reduced the assembly degree of difficulty, has improved the excellent goods rate of battery top cap structure to a certain extent.
Among the prior art, riveting top cap piece and riveting piece all are equipped with and are suitable for utmost point post male utmost point post hole, and utmost point post passes utmost point post hole to at utmost point post top through riveting and laser welding, it is fixed with battery top cap overall structure. The existing battery top cover adopting a riveting mode has the defects of multiple parts, complex structure, low goodness, high cost and the like. In addition, the existing riveting negative pole post is of a copper-aluminum composite welding structure, the post assembly is complex, and the cost is high. Meanwhile, the existing battery top cover adopting the riveting mode is subjected to module connecting sheet welding, so that the thickness of the riveting block cannot be reduced, the surface height of the riveting block to the surface of a top cover plate (such as a smooth aluminum sheet) is increased, and the height of an outer pole is increased. The higher the height of the outer pole, the lower the effective utilization height of the battery cell and the lower the capacity of the battery cell.
The battery top cover structure in the embodiment adopts an integral injection molding mode, namely the top cover plate 101, the positive injection molding glue 107 and the positive piece 102 are integrally formed by injection molding, and the top cover plate 101, the negative injection molding glue 108 and the negative piece 103 are integrally formed by injection molding, so that the sealing effect among the top cover plate 101, the positive injection molding glue 107 and the positive piece 102 is better, the sealing effect among the top cover plate 101, the negative injection molding glue 108 and the negative piece 103 is better, the traditional sealing ring structure can be cancelled, and the battery top cover structure is simplified; meanwhile, the height of the outer pole can be lower (for example, the existing riveting block is required to have the thickness of 2.5mm-3.5mm, the height of the outer pole of the embodiment can be 1mm at the lowest, and compared with the space which is formed by reducing the height of the outer pole of the embodiment by more than 2mm at the maximum by using the riveting mode at present), the energy density of the battery cell can be effectively improved. The battery top cover structure in the embodiment can eliminate the riveting block of the traditional riveting top cover, the top cover assembly process is simple, and the material cost and the process cost can be reduced.
Referring to fig. 4-6, in an alternative of this embodiment, the top cover sheet 101 is provided with two pole holes 203; one of the pole holes 203 is matched with the positive pole injection molding glue 107, namely one of the pole holes 203 is matched with the positive pole piece 102; the other pole hole 203 is matched with the negative pole injection molding glue 108, namely the other pole hole 203 is matched with the negative pole piece 103.
Optionally, the top surface of the top cover sheet 101 is provided with a top sheet groove 201 communicated with the pole hole 203; through setting up top flat recess 201 to can reduce the height of positive pole piece 102 and negative pole piece 103, can also improve the positive pole and mould plastics 107 or negative pole and mould plastics 108 and the area of contact of moulding plastics of top flat 101, strengthen the intensity of moulding plastics. Alternatively, the depth of the top sheet groove 201 may vary according to the height design requirements of the positive pole piece 102 and the negative pole piece 103. Alternatively, the depth of the top sheet groove 201 is 0.3mm to 1mm, or other dimensions. For example, the depth of the top sheet groove 201 is 0.3mm, 0.45mm, 0.5mm, 0.7mm, 0.9mm, 1mm, or the like.
Optionally, the bottom surface of the top cover sheet 101 is provided with a protrusion 204 corresponding to the pole hole 203. Through the protrusion 204, the injection molding contact area of the positive injection molding glue 107 or the negative injection molding glue 108 and the top cover plate 101 can be increased, and the injection molding strength is enhanced. Alternatively, the depth of the protrusion 204 may be 0.2mm to 1mm, or other dimensions. For example, the depth of the protrusion 204 is 0.2mm, 0.45mm, 0.5mm, 0.7mm, 0.9mm, or 1mm, etc.
Referring to fig. 4-6, in an alternative of this embodiment, the top surface of the top cover sheet 101 is provided with a rotation stopping groove 202 that mates with the positive electrode member 102 or the negative electrode member 103. The positive electrode member 102 or the negative electrode member 103 can also be prevented from rotating relative to the top cover sheet 101 by the rotation stopping grooves 202 so that the positive electrode member 102 or the negative electrode member 103 is positioned on the top cover sheet 101 at the time of injection molding. Alternatively, the cross-sectional shape of the rotation stop groove 202 may be semicircular, square, pentagonal, hexagonal, or the like. Optionally, the number of the rotation stopping grooves 202 matched with the positive pole piece 102 is one or more; alternatively, the number of the rotation stop grooves 202 to be fitted to the negative electrode member 103 is one or more.
In an alternative of this embodiment, the top sheet groove 201 and the rotation stopping groove 202 are respectively provided on both sides of the pole hole 203. Through set up top flat recess 201 and spline groove 202 in the both sides of utmost point hole 203 to further improve anodal injection moulding glue 107 or negative pole injection moulding glue 108 and the joint strength of moulding plastics of top cap piece 101, and then improve the structural strength of battery top cap structure.
Referring to fig. 6, in an alternative to this embodiment, the projection 204 is annular and the pole hole 203 passes through the projection 204. By adopting the annular bulge 204, the injection molding contact area of the positive injection molding glue 107 or the negative injection molding glue 108 and the top cover plate 101 is increased, and the injection molding strength is enhanced.
In an alternative of this embodiment, the number of the projections 204 is plural, and the plural projections 204 are provided along the circumferential direction of the pole hole 203. Through adopting a plurality of archs 204 along the circumference setting of utmost point hole 203 to improve the area of contact of moulding plastics of positive pole injection moulding glue 107 or negative pole injection moulding glue 108 and top lid piece 101, strengthen the intensity of moulding plastics.
In the alternative of this embodiment, the positive injection molding compound 107 and/or the negative injection molding compound 108 are integrally injection molded plastic; that is, the positive injection molding glue 107 is an integral injection molding plastic, or the negative injection molding glue 108 is an integral injection molding plastic, or both the positive injection molding glue 107 and the negative injection molding glue 108 are integral injection molding plastics.
Optionally, the material of the integrally injection-molded plastic is PPS or other injection-molded materials. Wherein PPS is the abbreviation of Polyphenylene sulfide, which is a Chinese name.
Specifically, the integrally injection-molded plastic includes a plastic body and a back reinforcement 303 connected to the plastic body; alternatively, the plastic body and the back reinforcement portion 303 are integrally molded. In this embodiment, the plastic covering area of the plastic body and the back reinforcement portion 303 is larger than the sectional area of the pole hole 203, that is, the plastic covering area of the integrally molded plastic is larger than the sectional area of the pole hole 203.
The plastic body part is arranged between the top surface of the top cover plate 101 and the anode piece 102, or the plastic body part is arranged between the top surface of the top cover plate 101 and the cathode piece 103; the back reinforcement 303 is provided on the bottom surface of the top cover sheet 101. Set up back reinforcement 303 through the bottom surface at top cover plate 101, both can increase plastic area of contact, can increase the structural strength that positive pole was moulded plastics and is glued 107 and negative pole and mould plastics 108 simultaneously again, can also promote top cover plate 101, the positive pole is moulded plastics and is glued the sealing reliability between 107 and the positive pole piece 102 to and can promote top cover plate 101, the negative pole is moulded plastics and is glued the sealing reliability between 108 and the negative pole piece 103.
Referring to fig. 1-3, in an alternative embodiment of the present invention, the battery top cover structure further includes a lower plastic 104 connected to the top cover sheet 101.
The back reinforcing part 303 is provided with a back reinforcing column 301 matched with the lower plastic 104; the top cover plate 101 is connected to the lower plastic 104 through the back reinforcing column 301. When the top cover plate 101 is fixedly connected with the lower plastic 104 through hot melting, the back reinforcing column 301 is melted through the hot melting plastic, so that the top cover plate 101 is combined with the lower plastic 104, and the lower plastic 104 is fixed on the top cover plate 101. Optionally, the back reinforcement column 301 passes through the lower plastic 104. Alternatively, the height of the backside reinforcement pillars 301 may be 1.5mm to 3mm, or other dimensions. For example, the height of the back reinforcement column 301 is 1.5mm, 2mm, 2.3mm, or 3 mm.
Referring to fig. 3, in an alternative embodiment, the plastic body portion is provided with a back body post 302 that mates with the lower plastic 104. The top cover sheet 101 is connected to the lower plastic 104 by the back body posts 302. When the top cover plate 101 is fixedly connected with the lower plastic 104 through hot melting, the back body column 302 is melted through the hot melting plastic, so that the top cover plate 101 is combined with the lower plastic 104, and the lower plastic 104 is fixed on the top cover plate 101. Optionally, the back body post 302 passes through the top cover sheet 101 and the lower plastic 104 in sequence. Alternatively, the height of the back body post 302 is 1.5mm-3mm, or other dimensions. For example, the height of the back body post 302 is 1.5mm, 2mm, 2.3mm, or 3mm, etc.
In an alternative of this embodiment, the lower plastic 104 is fixedly connected with the integrally injection-molded plastic in a hot-melting manner; that is, the lower plastic 104 is fixedly connected with the top cover plate 101 by hot melting.
In an alternative of this embodiment, the lower plastic 104 is made of PP or PPs, or other materials. Wherein PP is short for polypropylene and is named as polypropylene in Chinese.
In an alternative of this embodiment, the lower plastic 104 is provided with a positioning post that mates with the top cover sheet 101. Through the positioning column, the assembly between the lower plastic 104 and the top cover plate 101 is facilitated.
In the alternative of this embodiment, the top cover plate 101 subjected to surface treatment is connected with the positive injection molding glue 107 and the negative injection molding glue 108 by injection molding respectively, so that the positive injection molding glue 107 and the negative injection molding glue 108 are more easily tightly combined with the top cover plate 101 during injection molding, the connection strength between the positive injection molding glue 107 and the top cover plate 101 and the connection sealing performance between the positive injection molding glue 107 and the negative injection molding glue 108 and the top cover plate 101 are improved, and the connection sealing performance between the positive injection molding glue 107 and the negative injection molding glue 108 and the top cover plate 101 are improved.
In an alternative of this embodiment, the positive electrode piece 102 subjected to the surface treatment is connected with the positive electrode injection molding glue 107 in an injection molding manner, so that the positive electrode injection molding glue 107 is more easily tightly combined with the positive electrode piece 102 during the injection molding process, the connection strength between the positive electrode injection molding glue 107 and the positive electrode piece 102 is improved, and the connection sealing performance between the positive electrode injection molding glue 107 and the positive electrode piece 102 is improved.
In the alternative of this embodiment, the negative electrode part 103 subjected to the surface treatment is connected with the negative electrode injection molding compound 108 in an injection molding manner, so that the negative electrode injection molding compound 108 is more easily and tightly combined with the negative electrode part 103 during the injection molding process, the connection strength between the negative electrode injection molding compound 108 and the negative electrode part 103 is improved, and the connection sealing performance between the negative electrode injection molding compound 108 and the negative electrode part 103 is improved.
This embodiment battery top cap structure all adopts surface treatment through top cap piece 101, anodal piece 102 and negative pole piece 103, can effectively improve top cap piece 101, anodal injection molding glue 107 and the sealed effect between the anodal piece 102 to and improve top cap piece 101, the sealed effect between negative pole injection molding glue 108 and the negative pole piece 103, can cancel traditional fluorine rubber seal structure, simplified its structure.
In an alternative embodiment, the positive injection molding compound 107 and the negative injection molding compound 108 are both injection molded parts.
Referring to fig. 1 and 2, in an alternative of the present embodiment, an explosion-proof valve 105 is provided on the top cover plate 101; an explosion-proof valve patch 106 is arranged on the explosion-proof valve 105; by attaching the explosion-proof valve patch 106 on the explosion-proof valve 105, damage to the explosion-proof valve 105 during subsequent packaging and transportation of the battery top cover structure can be avoided or reduced.
In an alternative embodiment, the top cover plate 101 is made of an aluminum sheet or other materials.
The embodiment also provides a battery, which comprises the battery top cover structure. This battery, top cap piece 101 through battery top cap structure, anodal injection moulding glue 107 and positive pole piece 102 adopt an organic whole to mould plastics and form to and glue 108 and negative pole piece 103 through top cap piece 101, negative pole injection moulding and adopt an organic whole to mould plastics and form, its structure is simple relatively, has greatly reduced battery top cap structure's part quantity, has reduced the assembly degree of difficulty, has improved battery top cap structure's excellent goods rate to a certain extent.
The battery provided by the embodiment comprises the battery top cover structure, the technical characteristics of the disclosed battery top cover structure are also applicable to the battery, and the technical characteristics of the disclosed battery top cover structure are not described repeatedly. The battery in the embodiment has the advantages of the battery top cover structure, and the advantages of the battery top cover structure disclosed above are not described repeatedly.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. A battery top cover structure is characterized by comprising a top cover sheet (101), a positive electrode piece (102) and a negative electrode piece (103);
a positive injection molding glue (107) is arranged between the top cover plate (101) and the positive piece (102), and the top cover plate (101), the positive injection molding glue (107) and the positive piece (102) are formed by integral injection molding;
the negative pole injection molding glue (108) is arranged between the top cover plate (101) and the negative pole piece (103), and the top cover plate (101), the negative pole injection molding glue (108) and the negative pole piece (103) are integrally formed by injection molding.
2. The battery top cap structure of claim 1, wherein the top cover sheet (101) is provided with two pole holes (203); one of the pole holes (203) is matched with the positive pole injection molding glue (107), and the other pole hole (203) is matched with the negative pole injection molding glue (108);
the top surface of the top cover plate (101) is provided with a top plate groove (201) communicated with the pole hole (203); and/or the bottom surface of the top cover plate (101) is provided with a bulge (204) corresponding to the pole hole (203).
3. The battery top cover structure according to claim 2, wherein the top surface of the top cover sheet (101) is provided with a rotation stopping groove (202) engaged with the positive pole piece (102) or the negative pole piece (103).
4. The battery top cap structure according to claim 3, wherein the top sheet groove (201) and the whirl-stop groove (202) are respectively disposed at both sides of the pole hole (203).
5. The battery top cap structure of claim 2, wherein the protrusion (204) is annular and the pole hole (203) passes through the protrusion (204);
or the number of the bulges (204) is multiple, and the multiple bulges (204) are arranged along the circumferential direction of the pole hole (203).
6. The battery top cover structure according to any one of claims 1-5, wherein the positive injection molding compound (107) and/or the negative injection molding compound (108) is an integral injection molding plastic;
the integrated injection molding plastic comprises a plastic body part and a back surface reinforcing part (303) connected with the plastic body part; the plastic body part is arranged between the top surface of the top cover plate (101) and the positive pole piece (102), or the plastic body part is arranged between the top surface of the top cover plate (101) and the negative pole piece (103); the back reinforcement (303) is provided on the bottom surface of the top cover sheet (101).
7. The battery top cap structure of claim 6, further comprising a lower plastic (104) connected to the top cover sheet (101);
the back reinforcing part (303) is provided with a back reinforcing column (301) matched with the lower plastic (104); and/or the plastic body part is provided with a back body column (302) matched with the lower plastic (104);
the lower plastic (104) is fixedly connected with the integral injection molding plastic in a hot melting mode;
the lower plastic (104) is made of PP or PPS;
the lower plastic (104) is provided with a positioning column matched with the top cover plate (101).
8. The battery top cover structure according to any one of claims 1-5, wherein the top cover sheet (101) with surface treatment is connected with the positive injection molding glue (107) and the negative injection molding glue (108) in an injection molding way;
the positive piece (102) subjected to surface treatment is connected with the positive injection molding glue (107) in an injection molding way;
the negative pole piece (103) subjected to surface treatment is connected with the negative pole injection molding glue (108) in an injection molding manner;
the positive injection molding glue (107) and the negative injection molding glue (108) are injection molding pieces.
9. The battery top cover structure according to any one of claims 1-5, wherein the top cover sheet (101) is provided with an explosion-proof valve (105); an explosion-proof valve patch (106) is arranged on the explosion-proof valve (105);
or the top cover sheet (101) is a smooth aluminum sheet;
or the material of the negative pole piece (103) comprises a copper-aluminum composite plate.
10. A battery comprising a battery top cover structure according to any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122410089.7U CN216354473U (en) | 2021-09-30 | 2021-09-30 | Battery top cap structure and battery |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202122410089.7U CN216354473U (en) | 2021-09-30 | 2021-09-30 | Battery top cap structure and battery |
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| CN216354473U true CN216354473U (en) | 2022-04-19 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11949123B1 (en) * | 2023-02-09 | 2024-04-02 | Shenzhen Hithium Energy Storage Technology Co., Ltd. | Top patch, energy-storage apparatus, and electricity-consumption device |
| WO2024087376A1 (en) * | 2022-10-28 | 2024-05-02 | 厦门海辰储能科技股份有限公司 | Energy storage device and electric apparatus |
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2021
- 2021-09-30 CN CN202122410089.7U patent/CN216354473U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2024087376A1 (en) * | 2022-10-28 | 2024-05-02 | 厦门海辰储能科技股份有限公司 | Energy storage device and electric apparatus |
| US11949123B1 (en) * | 2023-02-09 | 2024-04-02 | Shenzhen Hithium Energy Storage Technology Co., Ltd. | Top patch, energy-storage apparatus, and electricity-consumption device |
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