CN220400730U - Cover plate assembly and battery - Google Patents

Abstract

The application provides a cover plate assembly and a battery. The cover plate assembly comprises a cover plate body, an elastic sealing piece, a pole and an injection molding connecting piece. The cover plate body comprises a plate body and a cylinder body, the cylinder body penetrates through the plate body along the thickness direction of the plate body, a first through hole is formed in the plate body, the first through hole is located in the cylinder body, and the plate body and the cylinder body are of an integrated structure; the elastic sealing piece is arranged in the cylinder; the pole is arranged on the elastic sealing element, and the elastic sealing element insulates the cover plate body and the pole; the injection molding connecting piece is connected with the cover plate body, the elastic sealing piece and the pole post to form an integral injection molding structure. The cover plate component can solve the problem that the processing cost of the cover plate component is high.

Description

Cover plate assembly and battery

Technical Field

The application relates to the technical field of batteries, in particular to a cover plate assembly and a battery.

Background

The battery has the advantages of long cycle life, high energy density, high voltage, small self-discharge and the like. With the wide popularization and application of digital electronic products and power energy storage products, especially in recent years, the market of new energy automobiles continues to expand at a high speed, the demand of batteries is increased rapidly, and the market scale is increased at a high speed. Batteries are gradually occupying the market in the fields of consumer electronics, electric vehicles, automobiles, electric tools, smart grids and the like, and have wide application prospects.

The battery comprises an electric core, a shell and a cover plate assembly. The cover assembly may be coupled to the housing. The battery cell may be located within an interior space defined by the housing and the cover assembly. The housing can protect the battery cells from damage. The cover plate assembly may include a cover plate body, a post, and a seal. The pole and the sealing element can be fixedly arranged on the cover plate body. Therefore, the cover plate body is usually provided with a fixing structure for fixedly connecting with the pole and the sealing member.

In the related art, the fixing structure is usually fixed to the cover body by welding. After the welding is completed, the staff assembles the pole, the sealing element and the cover plate body. However, the cost of manual assembly is high, and the assembly process is easy to be in error, so that bad products are generated, normal use of the battery is affected, and user experience is affected.

Disclosure of Invention

The application provides a apron subassembly and battery can solve the higher problem of apron subassembly processing cost.

In one aspect, the present application provides a cover plate assembly comprising:

the cover plate body comprises a plate body and a cylinder body, the cylinder body penetrates through the plate body along the thickness direction of the plate body, a first through hole is formed in the plate body, the first through hole is located in the cylinder body, and the plate body and the cylinder body are of an integrated structure;

the elastic sealing piece is arranged in the cylinder body;

the pole is arranged on the elastic sealing element, and the elastic sealing element insulates and isolates the cover plate body and the pole;

and the injection molding connecting piece is used for connecting the cover plate body, the elastic sealing piece and the pole post to form an integrated injection molding structure.

The application provides a apron subassembly, the apron body can include plate body and barrel. The plate body and the cylinder body can be of an integrated structure, so that the processing procedures of welding or riveting the plate body and the cylinder body can be reduced, and the processing cost is reduced. In addition, the cover plate body, the elastic sealing piece and the pole post can be connected through the injection molding connecting piece to form a whole, so that the assembly process between the cover plate body, the elastic sealing piece and the pole post can be saved, and the processing cost can be effectively reduced.

According to an embodiment of the application, the plate body comprises a base plate and an annular flange, the annular flange protrudes out of the inner wall of the cylinder body, the inner wall of the annular flange is surrounded to form a first through hole, and the base plate is arranged on the outer wall of the cylinder body.

According to one embodiment of the application, the annular flange and the cylinder form a receiving space, the elastic sealing element and part of the pole are located in the receiving space, a gap is formed between the pole and the cylinder along the radial direction of the first through hole, and part of the injection molding connecting element is located in the gap.

According to one embodiment of the application, the elastic sealing element comprises an annular sealing part and a cylindrical sealing part, and the cylindrical sealing part is sleeved on the outer surface of the annular sealing part;

the annular sealing part is positioned between the annular flange and the pole in the thickness direction so as to insulate the pole from the annular flange;

the outer surface of the cylindrical sealing part is connected with the cylinder body, and the inner surface of the cylindrical sealing part is connected with the pole column to insulate the pole column from the cylinder body.

According to one embodiment of the application, the cylindrical sealing part is located in a gap between the pole and the cylinder, and one end of the cylindrical sealing part, which is far away from the annular sealing part, is connected with the injection molding connecting piece.

According to one embodiment of the application, the cylinder is provided with a second through hole, and the part of the injection molding connecting piece is positioned in the second through hole.

According to an embodiment of the application, along the circumference of the first through hole, the pole is provided with a first outer flange, one side of the injection molding connecting piece facing the pole is provided with a first limit groove, and the first outer flange is located in the first limit groove.

According to one embodiment of the present application, the number of the first outer side flanges is plural, and the plural first outer side flanges are arranged at intervals along the thickness direction, and a second limit groove is formed between two adjacent first outer side flanges;

the number of the first limit grooves is multiple, the first limit grooves are arranged at intervals along the thickness direction, and a second outer flange is formed between two adjacent first limit grooves;

the second outer flange is positioned in the second limit groove.

According to an embodiment of the application, the cover plate comprises a cover plate body, wherein the cover plate body is provided with an annular flange, and the cover plate body is provided with a first insulating part and a second insulating part.

In another aspect, the present application provides a battery comprising:

a battery cell;

the shell is provided with an accommodating cavity, and the battery cell is positioned in the accommodating cavity;

the cover assembly of any of the above embodiments, wherein the cover assembly is coupled to the housing to cover the receptacle.

In addition to the technical problems, technical features constituting the technical solutions, and beneficial effects caused by the technical features of the technical solutions described above, the cover plate assembly and other technical problems that can be solved by the battery provided by the embodiments of the present utility model, other technical features included in the technical solutions, and beneficial effects caused by the technical features are described in detail in the detailed description.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the application and together with the description, serve to explain the principles of the application.

FIG. 1 is a schematic front view of a cover assembly according to an embodiment of the present disclosure;

FIG. 2 is a schematic cross-sectional view of a cover plate assembly according to an embodiment of the present application;

FIG. 3 is a schematic cross-sectional view of a cover body according to an embodiment of the present application;

FIG. 4 is an enlarged schematic view of FIG. 3 at A;

FIG. 5 is an enlarged schematic view at B in FIG. 2;

fig. 6 is an enlarged schematic view at C in fig. 2.

Reference numerals illustrate:

100-a cover plate assembly;

110-a cover plate body; 110 a-an accommodation space;

111-plate body; 111 a-a first through hole;

1111-a substrate; 1112-an annular flange; 1112 a-a limit groove;

112-a cylinder; 112 a-a second through hole;

120-elastic seal;

121-an annular seal;

122-a cylindrical sealing portion;

130-pole;

131-a first outboard flange;

132-a second limit groove;

140-injection molding the connector;

141-a first limit groove;

142-a second outer flange;

150-insulating member;

151-a first insulating portion;

152-a second insulating portion;

z-thickness direction.

Specific embodiments thereof have been shown by way of example in the drawings and will herein be described in more detail. These drawings and the written description are not intended to limit the scope of the inventive concepts in any way, but to illustrate the concepts of the present application to those skilled in the art by reference to specific embodiments.

Detailed Description

Reference will now be made in detail to exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, the same numbers in different drawings refer to the same or similar elements, unless otherwise indicated. The implementations described in the following exemplary examples are not representative of all implementations consistent with the present application. Rather, they are merely examples of apparatus and methods consistent with some aspects of the present application as detailed in the accompanying claims. It will be apparent that the embodiments described are some, but not all, of the embodiments of the present application. All other embodiments, which can be made by one of ordinary skill in the art without undue burden from the present disclosure, are within the scope of the present disclosure.

The cover plate assembly can be used for being assembled with the battery cell and the shell to form a battery. The battery of the embodiment of the application can comprise a lithium ion secondary battery, a lithium sulfur battery or a sodium lithium ion battery and the like. And are not limited in this application. The battery is generally divided into a square battery and a soft package battery in a packaging manner, which is not limited in the embodiment of the present application.

The battery of the embodiment of the application can supply power for mobile equipment such as vehicles, ships, small aircrafts and the like. Taking a vehicle as an example, the vehicle of the application can be a new energy automobile. The new energy automobile can be a pure electric automobile, a hybrid electric automobile or a range-extended automobile. The battery can be used as a driving power supply of the automobile to supply driving power for the automobile instead of or in part of fuel oil or natural gas. For example, the battery may provide electrical energy to the drive motor. The driving motor is connected with wheels on the vehicle through a transmission mechanism so as to drive the vehicle to travel. Specifically, the battery may be horizontally disposed at the bottom of the vehicle.

The battery includes a cover plate assembly, a cell and a housing. The cover plate assembly may include a cover plate body, a post, a seal, and an insulator. The battery core can lead out two polar lugs with opposite polarities. The tab can be connected with the pole through the connecting sheet so that the pole and the tab have the same electrical property. The post may be used for electrical connection with external circuitry.

The battery comprises an electric core, a shell and a cover plate assembly. The cover assembly may be coupled to the housing. The battery cell may be located within an interior space defined by the housing and the cover assembly. The housing can protect the battery cells from damage. The cover plate assembly may include a cover plate body, a post, and a seal. The post and the seal may be fixedly mounted to the cover plate body. Therefore, the cover plate body is usually provided with a fixing structure for fixedly connecting with the pole, the sealing member and other parts.

In the related art, the fixing structure is usually fixed to the cover body by welding. After the welding is completed, the staff assembles the pole and the sealing element with the cover plate body. However, the cost of manual assembly is high, and the assembly process is easy to be in error, so that bad products are generated, normal use of the battery is affected, and user experience is affected.

Based on the technical problems, the applicant improves the structure of the existing cover plate assembly. In the cover plate assembly of the present application, the cover plate body may include a plate body and a cylinder. The plate body and the cylinder body can be of an integrated structure, so that the processing procedures of welding or riveting the plate body and the cylinder body can be reduced, and the processing cost is reduced. In addition, the cover plate body, the elastic sealing piece and the pole post can be connected through the injection molding connecting piece to form a whole, so that the assembly process between the cover plate body, the elastic sealing piece and the pole post can be saved, and the processing cost can be effectively reduced.

The cover plate assembly and the battery provided by the application are described below with reference to the accompanying drawings in combination with specific embodiments.

Referring to fig. 1 and 2, a cap plate assembly 100 of an embodiment of the present application includes a cap plate body 110, an elastic seal 120, a post 130, and an injection molded connection 140.

Referring to fig. 3 and 4, the cap body 110 includes a plate body 111 and a cylinder 112. The cylinder 112 penetrates the plate body 111 in the thickness direction Z of the plate body 111. The plate 111 is provided with a first through hole 111a. The first through hole 111a is located inside the cylinder 112, and the plate body 111 and the cylinder 112 are integrally constructed. An elastomeric seal 120 is disposed within the barrel 112. The pole 130 is disposed on the elastic sealing member 120. The elastic sealing member 120 insulates the cap plate body 110 and the post 130. The injection molding connection member 140 connects the cap plate body 110, the elastic sealing member 120, and the post 130 to form an integral injection molding structure.

The plate body 111 and the cylinder 112 in the embodiment of the present application may form the cover plate body 110 with an integral structure, without further processing through other processes such as riveting, welding, and the like. Therefore, the processing procedures and the number of parts can be saved, and the production cost of products can be reduced.

In addition, the cap plate body 110, the elastic sealing member 120, and the post 130 may be connected by the injection molding connection member 140 to form one integral assembly, i.e., the cap plate assembly 100. The cap plate assembly 100 may be used to electrically connect with the battery cells and seal with the case, thereby completing the assembly process of the battery. The cover plate assembly 100 of the embodiment of the application can save the assembly process among the cover plate body 110, the elastic sealing element 120 and the pole 130, and is beneficial to improving the assembly efficiency and reducing the cost.

In some examples, the cap plate body 110, the elastic seal 120, and the post 130 may be formed into the cap plate assembly 100 using an injection molding process. The injection molded connector 140 may have two configurations. When the cap plate body 110, the elastic sealing member 120, and the post 130 are located in the injection mold, the injection molding connection member 140 may have fluidity to be filled into the injection mold. The injection molding connection 140 may be in full contact with the cap plate body 110, the elastic sealing member 120, and the post 130 in the injection mold. The injection molded connection 140 may then solidify to form a solid body, which may form the unitary cover assembly 100 with the cover body 110, the elastomeric seal 120, and the post 130.

In some examples, injection molded connector 140 may be made of PPS plastic (polyphenylene sulfide) material. After solidification, the injection molding connection member 140 may be fixedly connected with the cap plate body 110, the elastic sealing member 120, and the post 130. Loosening is less likely to occur between the injection molded connection 140, the cap plate body 110, the elastic seal 120 and the post 130.

In some examples, injection molded connectors 140 may be attached to the inner and outer walls of the can 112 to connect with the cap body 110, the elastomeric seal 120, and the post 130.

It should be noted that, the barrel 112 is protruding to be disposed on a side surface of the plate 111 facing away from the battery cell, so that the barrel 112 is not easy to occupy an inner space of the housing, and the possibility that the barrel 112 affects the battery energy density can be reduced.

In some implementations, referring to fig. 4, the plate 111 of embodiments of the present application may include a base plate 1111 and an annular flange 1112. An annular flange 1112 is provided protruding from the inner wall of the barrel 112. The inner wall of the annular flange 1112 may be enclosed to form a first through hole 111a. The base plate 1111 is provided on the outer wall of the cylinder 112.

The base plate 1111 and the annular flange 1112 of the present embodiment may be provided on the outer wall and the inner wall of the annular flange 1112, respectively. The substrate 1111 may be connected to a case to form a battery. The side of the annular flange 1112 facing away from the battery core may be provided with an elastic sealing member 120, where the elastic sealing member 120 may seal the first through hole 111a under the interaction force of the terminal 130 and the annular flange 1112, and the elastic sealing member 120 may also insulate the terminal 130 from the cover body 110.

In some examples, the surfaces of the base plate 1111 and the annular flange 1112 facing the cell may be flush.

In some examples, the number of first through holes 111a may be two. The battery core can lead out two lugs. The number of the poles 130 may be two. The two tabs may be connected to the two posts 130 through connection pieces, respectively. The connection piece may pass through the first through hole 111a to be electrically connected with the post 130.

In some implementations, referring to fig. 4 and 5, the annular flange 1112 and the barrel 112 of embodiments of the present application may form a receiving space 110a. The elastic sealing member 120 and a portion of the post 130 are located in the receiving space 110a. In the radial direction of the first through hole 111a, a gap is provided between the post 130 and the cylinder 112. A portion of the injection molded connector 140 is located within the gap.

The accommodating space 110a of the embodiment of the application is located at one side of the annular flange 1112 facing away from the battery cell, and the elastic sealing member 120 and the terminal 130 are located in the accommodating space 110a, so that the elastic sealing member 120 and the terminal 130 are not easy to occupy the inner space formed by the cover plate body 110 and the housing. The cover plate assembly 100 of the embodiment of the application can effectively improve the utilization rate of the internal space of the battery, thereby being beneficial to improving the energy density of the battery.

In some examples, there is a gap between the outer profile of the pole 130 and the inner wall of the can 112 along the radial direction of the first through hole 111a. Thus, the injection molded connection 140 may fill in the gap. The injection molded connection 140 may be in sufficient contact with the outer contour of the pole 130 and the inner wall of the can 112 to connect the pole 130 and the can 112 through the injection molded connection 140.

In some implementations, referring to fig. 6, the elastomeric seal 120 of embodiments of the present application may include an annular seal 121 and a cylindrical seal 122. The cylindrical sealing portion 122 is sleeved on the outer surface of the annular sealing portion 121.

In the thickness direction Z, the annular seal 121 is located between the annular flange 1112 and the pole 130 to insulate the pole 130 from the annular flange 1112. The outer surface of the cylindrical seal 122 is connected to the cylinder 112. The inner surface of the cylindrical sealing portion 122 may be connected with the pole 130 to insulate the pole 130 from the can 112.

The elastic sealing member 120 of the embodiment of the present application may have elasticity, and also has good sealing and insulating properties. During the injection molding process of the pole 130, the elastic sealing element 120 and the cover plate body 110, the pole 130, the elastic sealing element 120 and the cover plate body 110 are placed in an injection mold, and the pole 130 can apply a force to the elastic sealing element 120 towards the direction of the annular flange 1112, so that the elastic sealing element 120 can be compressed, and a sealing effect is achieved. Injection molding connection 140 is then injected into the injection mold.

In some examples, the amount of compression of the elastomeric seal 120 may be controlled by controlling the height of the injection mold internal structure.

In some examples, there may be a mounting gap between the outer surface of the barrel seal 122 and the inner wall of the barrel 112. For example, the mounting gap may be, but is not limited to, 0.05 millimeters.

In some examples, the surface of the annular flange 1112 facing the barrel 112 may be provided with a limit groove 1112a. The partial annular seal 121 of the resilient seal 120 may be located within the limit groove 1112a.

In some implementations, referring to fig. 6, the barrel seal 122 of embodiments of the present application may be located within a gap between the post 130 and the barrel 112. The end of the cylindrical sealing portion 122 remote from the annular sealing portion 121 is connected to the injection-molded connector 140.

The injection molding connecting piece 140 of the embodiment of the application can fully contact with one end of the cylindrical sealing part 122 of the elastic sealing piece 120 far away from the annular flange 1112, and the injection molding connecting piece 140 can also fully contact with the inner wall of the cylinder 112 and the outer side edge of the pole 130, so that the connection reliability between the injection molding connecting piece 140 and the cylinder 112, the pole 130 and the elastic sealing piece 120 can be improved.

In some examples, the outer wall of the barrel 112 may also be attached with an injection molded connector 140. For example, the injection molded connector 140 may be coated on the outer wall of the cylinder 112, and the injection molded connector 140 may contact a portion of the surface of the base 1111 facing the cylinder 112.

In some examples, the end of the barrel 112 remote from the plate 111 may also be in substantial contact with the injection molded connection 140. For example, in the thickness direction Z of the plate 111, the surface of the injection-molded connector 140 away from the plate 111 may protrude beyond the end of the cylinder 112 away from the plate 111.

In some implementations, referring to fig. 4 and 5, a second through hole 112a may be provided on the cylinder 112 in an embodiment of the present application. A portion of the injection molded connector 140 is positioned within the second through hole 112a.

The elastic sealing member 120 is elastically deformed by the force of the post 130 and the annular flange 1112 to achieve a sealing effect. After the injection molded connection 140 solidifies, there is still an interaction force between the post 130 and the elastomeric seal 120. The elastic sealing member 120 can apply an elastic force to the pole 130 in a direction opposite to the plate 111, so that the possibility that the pole 130 moves the injection molding connecting member 140 to be separated from the cylinder 112 is easy to occur. The interior of the second through hole 112a of the embodiment of the present application may be filled with the injection molding connection 140. Therefore, after the injection molding connection member 140 is solidified, the inner wall of the second through hole 112a can restrict the movement of the injection molding connection member 140 in the second through hole 112a along the thickness direction Z, so as to restrict the movement of the pole 130 through the injection molding connection member 140, thereby reducing the possibility that the pole 130 slides away from the annular flange 1112 due to the elastic force.

In some examples, the number of second through holes 112a formed in embodiments of the present application may be a plurality. The plurality of second through holes 112a are uniformly distributed on the cylinder 112 along the circumferential direction of the first through hole 111a.

In some examples, the shape of the first through hole 111a formed in the embodiments of the present application may be square. The barrel 112 may have four sidewalls. At least one second through hole 112a may be provided on each sidewall.

In some examples, the second through hole 112a may be a circular hole, a square hole, or a waist hole, which is not limited in this application.

In some implementations, referring to fig. 5, the post 130 may be provided with a first outer flange 131 along the circumference of the first through hole 111a. The injection molding connection member 140 is provided with a first limit groove 141 on a side facing the pole 130. The first outer flange 131 may be located in the first limit groove 141.

The inner wall of the second through hole 112a may restrict the movement of the injection molding connection member 140 in the thickness direction Z. The mutual constraint of the first outer flange 131 and the first limiting groove 141 can reduce the possibility of movement of the pole 130 in the thickness direction Z, so that the pole 130 and the injection-molded connection member 140 are not easily separated from the cap plate body 110, and the connection reliability of the cap plate assembly 100 can be effectively improved.

In some implementations, referring to fig. 5, the number of first outboard flanges 131 of embodiments of the present application may be multiple. The plurality of first outer side flanges 131 may be disposed at intervals in the thickness direction Z. A second limiting groove 132 may be formed between adjacent two of the first outer side flanges 131. The number of the first limiting grooves 141 may be plural. The plurality of first limit grooves 141 are disposed at intervals in the thickness direction Z. A second outside flange 142 may be formed between adjacent two first limit grooves 141.

The second outer flange 142 and the side wall of the second limiting groove 132 may be constrained to each other to reduce the possibility of movement of the pole 130 in the thickness direction Z. In addition, the second outer flange 142 and the second limiting groove 132 can further increase the connection surface area between the injection molding connection member 140 and the pole 130, which is beneficial to improving the connection stability of the pole 130 and the injection molding connection member 140.

In some implementations, referring to fig. 5, the cover plate assembly 100 may further include an insulator 150. The insulator 150 may include a first insulating portion 151 and a second insulating portion 152 connected. The first insulating portion 151 may be provided on an inner wall of the annular flange 1112. The second insulating portion 152 may be disposed on a surface of the cap body 110 facing away from the post 130 along the thickness direction Z.

The connection piece may be penetrated inside the first through hole 111a to be connected with the post 130. The first insulating portion 151 may reduce the possibility of the connection pad being electrically connected to the inner wall of the first through hole 111a. The second insulating portion 152 may be used to insulate the battery cell from the cover body 110 so as to electrically insulate the battery cell from the cover body 110.

Embodiments of the present application also provide a battery including a cell, a housing, and a cover assembly 100 of any of the embodiments described above. The housing may have a receiving cavity. The battery cell may be located in the receiving cavity of the housing. The cover plate assembly 100 may be coupled to the housing to cover the receiving chamber.

It should be noted that, the numerical values and numerical ranges referred to in the present application are approximate values, and may have a certain range of errors under the influence of the manufacturing process, and those errors may be considered to be negligible by those skilled in the art.

In the description of the embodiments of the present application, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, indirectly connected through an intermediary, or may be in communication with each other between two elements or in an interaction relationship between two elements. The specific meaning of the above terms in the embodiments of the present application will be understood by those of ordinary skill in the art according to the specific circumstances.

In the description of the present application, it should be understood that the terms "center," "length," "width," "thickness," "top," "bottom," "upper," "lower," "left," "right," "front," "rear," "vertical," "horizontal," "inner," "outer," "axial," "circumferential," and the like are used to indicate orientations or positional relationships based on the orientation or positional relationships shown in the drawings, merely to facilitate description of the present utility model and to simplify description, and do not indicate or imply that the locations or elements referred to must have a particular orientation, be in a particular configuration and operation, and therefore should not be construed as limiting the present utility model.

The embodiments or implications herein must have a particular orientation, be constructed and operate in a particular orientation, and therefore should not be construed as limiting the embodiments herein. In the description of the embodiments of the present application, the meaning of "a plurality" is two or more, unless specifically stated otherwise.

The terms first, second, third, fourth and the like in the description and in the claims of embodiments of the application and in the above-described figures, if any, are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged where appropriate such that the embodiments of the present application described herein may be implemented, for example, in sequences other than those illustrated or described herein.

Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.

The term "plurality" herein refers to two or more. The term "and/or" is herein merely an association relationship describing an associated object, meaning that there may be three relationships, e.g., a and/or B, may represent: a exists alone, A and B exist together, and B exists alone. In addition, the character "/" herein generally indicates that the front and rear associated objects are an "or" relationship; in the formula, the character "/" indicates that the front and rear associated objects are a "division" relationship.

It will be appreciated that the various numerical numbers referred to in the embodiments of the present application are merely for ease of description and are not intended to limit the scope of the embodiments of the present application.

It should be understood that, in the embodiments of the present application, the sequence number of each process described above does not mean that the execution sequence of each process should be determined by the function and the internal logic of each process, and should not constitute any limitation on the implementation process of the embodiments of the present application.

Claims (10)

1. A cover plate assembly, comprising:

the cover plate body comprises a plate body and a cylinder body, the cylinder body penetrates through the plate body along the thickness direction of the plate body, a first through hole is formed in the plate body and is located in the cylinder body, and the plate body and the cylinder body are of an integrated structure;

an elastic sealing element arranged in the cylinder;

the pole is arranged on the elastic sealing piece, and the elastic sealing piece insulates the cover plate body and the pole in an insulating way;

and the injection molding connecting piece is used for connecting the cover plate body, the elastic sealing piece and the pole column to form an integral injection molding structure.

2. The cover plate assembly of claim 1, wherein the plate body comprises a base plate and an annular flange, the annular flange is convexly arranged on the inner wall of the cylinder, the first through hole is formed by surrounding the inner wall of the annular flange, and the base plate is arranged on the outer wall of the cylinder.

3. The cover plate assembly of claim 2, wherein the annular flange forms a receiving space with the barrel, the elastomeric seal and a portion of the post being located in the receiving space, a gap being provided between the post and the barrel in a radial direction of the first through bore, and a portion of the injection molded connector being located in the gap.

4. The cover plate assembly of claim 3, wherein the elastic seal comprises an annular seal portion and a cylindrical seal portion, the cylindrical seal portion being sleeved on an outer surface of the annular seal portion;

the annular sealing part is positioned between the annular flange and the pole in the thickness direction so as to isolate the pole from the annular flange in an insulating manner;

the outer surface of the cylindrical sealing part is connected with the cylinder body, and the inner surface of the cylindrical sealing part is connected with the pole column so as to insulate the pole column from the cylinder body.

5. The cover plate assembly of claim 4, wherein the cylindrical seal is located in a gap between the post and the barrel, and wherein an end of the cylindrical seal remote from the annular seal is connected to the injection molded connection.

6. The cover assembly of claim 5, wherein the barrel is provided with a second through hole, and wherein a portion of the injection molded connector is positioned within the second through hole.

7. The cover plate assembly of claim 1, wherein the post is provided with a first outer flange along a circumference of the first through hole, a side of the injection molding connector facing the post is provided with a first limit groove, and the first outer flange is located in the first limit groove.

8. The cover plate assembly according to claim 7, wherein the number of the first outer side flanges is plural, the plural first outer side flanges are arranged at intervals along the thickness direction, and a second limit groove is formed between two adjacent first outer side flanges;

the number of the first limit grooves is multiple, the first limit grooves are arranged at intervals along the thickness direction, and a second outer flange is formed between two adjacent first limit grooves;

the second outer flange is located in the second limiting groove.

9. The cover plate assembly of claim 2, further comprising an insulating member comprising a first insulating portion and a second insulating portion connected, the first insulating portion being disposed on an inner wall of the annular flange, the second insulating portion being disposed on a surface of the cover plate body facing away from the post in the thickness direction.

10. A battery, comprising:

a battery cell;

the shell is provided with an accommodating cavity, and the battery cell is positioned in the accommodating cavity;

a cover assembly as claimed in any one of claims 1 to 9, which is connected to the housing to close the accommodation.