CN218385668U

CN218385668U - Composite pole, top cover assembly and battery

Info

Publication number: CN218385668U
Application number: CN202222535502.7U
Authority: CN
Inventors: 张方超; 赵艺惠; 何金磊
Original assignee: Shanghai Lanjun New Energy Technology Co Ltd
Current assignee: Shanghai Lanjun New Energy Technology Co Ltd
Priority date: 2022-09-23
Filing date: 2022-09-23
Publication date: 2023-01-24
Anticipated expiration: 2032-09-23

Abstract

The embodiment of the utility model provides a compound utmost point post, top cap subassembly and battery relates to battery technical field, sets up the mounting hole through the first face with the first component of first material, sets up the spliced pole on the body part of the second component of second material, utilizes the spliced pole to cooperate in the mounting hole and fasten, can realize the connection of first component and second component from this, for prior art, the energy consumption is low and need not secondary operation, and the manufacturing process is simple.

Description

Composite pole, top cover assembly and battery

Technical Field

The utility model belongs to the technical field of the battery technique and specifically relates to a compound utmost point post, top cap subassembly and battery are related to.

Background

A secondary battery is also called a rechargeable battery or a secondary battery, and refers to a battery that can be continuously used by activating an active material by charging after the battery is discharged.

The terminal post is a wiring terminal in the battery and is a component for communicating the inside and the outside of the battery, one end of the terminal post is connected with an internal battery core of the battery, and the other end of the terminal post is connected with an external circuit of the lithium battery, so that the battery can realize the charge and discharge functions.

At present, the pole is generally composed of two components which are welded in a friction welding mode, however, the inventor researches show that in the friction welding process, the energy consumption for connection generated by high-speed rotation is high, the pole needs to be machined again after welding is completed, the pole can be in a required shape after redundant materials are removed, and the manufacturing process is complicated.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a compound utmost point post, top cap subassembly and battery, the energy consumption is low and need not secondary operation, and manufacturing process is simple.

In a first aspect, the utility model provides a compound utmost point post, include:

a first member made of a first material, the first member having a first surface and a mounting hole provided in the first surface;

the second component is made of a second material and comprises a body part and a connecting column, wherein the first end of the connecting column is connected to the body part, and the connecting column is fastened and matched with the mounting hole.

In an alternative embodiment, the connecting stud is riveted to the mounting hole.

In alternative embodiments, the first member has a second face opposite to the first face, and the mounting hole penetrates through the second face, wherein the mounting hole comprises a matching hole section and a first step hole section which are communicated with each other, and the inner diameter of the first step hole section is larger than that of the matching hole section;

the connecting column is fastened and matched with the matching hole section, the second end of the connecting column penetrates through the first step hole section, a barb ring portion protruding outwards in the radial direction is formed on the outer peripheral surface of the second end, the barb ring portion abuts against the bottom surface of the first step hole section, and the end face of the second end is flush or sunken relative to the second surface.

In an optional embodiment, the mounting hole further comprises a second stepped hole section communicated with the first stepped hole section, the second stepped hole section is located at one end of the first stepped hole section far away from the matching hole section, and an inner diameter of the second stepped hole section is larger than that of the first stepped hole section.

In an alternative embodiment, the difference between the hole diameters of the first stepped hole section and the fitting hole section is 0.2 to 1mm;

and/or the presence of a gas in the gas,

the difference of the aperture of the second step hole section and the aperture of the first step hole section is 0.2-1 mm;

and/or the presence of a gas in the gas,

the vertical distance between the end face of the second end and the second surface is 0-1 mm.

In an alternative embodiment, the end face of the second end is recessed with respect to the second face, and an insulating filler covers the first and second stepped hole sections and the end face of the second end and is flush with the second face;

or the like, or, alternatively,

the end face of the second end is flush with the second face, the first step hole section and the second step hole section are covered by the insulating filler, and the end face of the second end is covered by the insulating film.

In an alternative embodiment, the first material is copper; and/or the second material is aluminum.

In a second aspect, the present invention provides a cap assembly, including any one of the above embodiments, of the composite post.

In an alternative embodiment, the top cover assembly further includes a fixing piece, and a radially protruding mounting ring is further formed on the peripheral side of the body portion, and an end surface of the mounting ring facing the first surface abuts against the fixing piece.

In a third aspect, the present invention provides a battery comprising a cap assembly according to any one of the above embodiments.

The utility model discloses beneficial effect includes:

the embodiment of the utility model provides a compound utmost point post, battery and top cap subassembly sets up the mounting hole through the first face with the first component of first material, sets up the spliced pole on the body portion of the second component of second material, utilizes the spliced pole to cooperate in the mounting hole and fasten, can realize the connection of first component and second component from this, for prior art, the energy consumption is low and need not secondary operation, and manufacturing process is simple.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the technical solutions in the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

FIG. 1 is a cross-sectional view of a header assembly according to an embodiment of the present invention;

fig. 2 is a perspective view of a composite pole according to an embodiment of the present invention;

FIG. 3 is a perspective view of a first member of an embodiment of the present invention;

FIG. 4 is a cross-sectional view of a first member of an embodiment of the present invention;

fig. 5 is a perspective view of a second member of an embodiment of the present invention prior to riveting.

An icon: 100-a cap assembly; 10-a top cover sheet; 20-coating plastic; 30-discharging plastic; 40-fixing sheet; 50-a composite pole; 51-a first member; 510-a first side; 511-a second face; 512-a mating hole section; 513 — a first stepped bore section; 514-a second stepped bore section; 52-a second member; 521-a body portion; 522-a binding surface; 523-connecting column; 524-first end; 525-a second end; 526-barb ring section; 527-mounting ring; 53-insulating filler.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be clearly and completely described below with reference to the accompanying 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, as 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 accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to 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 the position or positional relationship based on the position or positional relationship shown in the drawings, or the position or positional relationship which is usually placed when the product of the present invention is used, 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 position, be constructed and operated in a specific orientation, 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", "suspended", and the like do not imply a requirement that the components be absolutely horizontal or suspended, 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, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; 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 meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Some embodiments of the present invention will be described in detail with reference to fig. 1 to 5. The embodiments described below and the features of the embodiments can be combined with each other without conflict.

The embodiment of the utility model provides a top cap subassembly 100, it includes top cap piece 10, goes up plastic 20, lower plastic 30, compound utmost point post 50 and stationary blade 40, and compound utmost point post 50 sets up in top cap piece 10 to support each other with stationary blade 40 and hold, go up plastic 20 and be used for making mutual insulation between the upper surface of compound utmost point post 50 and top cap piece 10, lower plastic 30 is used for making insulating between the lower surface of top cap piece 10 and the compound utmost point post 50.

The composite pole 50 comprises a first member 51 and a second member 52, wherein the first member 51 is made of a first material, and the first member 51 has a first surface 510 and a mounting hole arranged on the first surface 510; the second member 52 is made of a second material, the second member 52 includes a main portion 521 and a connecting rod 523, a first end 524 of the connecting rod 523 is connected to the main portion 521, and the connecting rod 523 is tightly fitted in the mounting hole.

As described above, in the present embodiment, the first surface 510 of the first member 51 made of the first material is provided with the mounting hole, the main body 521 of the second member 52 made of the second material is provided with the connecting post 523, and the connecting post 523 is fitted into the mounting hole and fastened, so that the first member 51 and the second member 52 can be connected to each other.

In addition, because the welding is difficult to find when not up to standard, the welded connection face between two components is easy to break when leading to using, causes the loss, and in this embodiment, can in time discover whether the equipment has nonconforming when assembling first component 51 and second component 52, easily discover to guarantee the stability when compound utmost point post 50 uses, avoid causing the loss.

In this embodiment, the main body 521 has an abutting surface 522, the first end 524 of the connecting column 523 is connected to the abutting surface 522, and the abutting surface 522 abuts against the first surface 510 to ensure the connection and fastening of the first member 51 and the second member 52.

In the present embodiment, the first member 51 and the second member 52 are riveted through a riveting process (e.g., a press riveting process) to fixedly fit the connection pole 523 in the installation hole, and the abutting surface 522 is closely attached to the first surface 510, that is, the connection pole 523 is riveted in the installation hole.

In the embodiment, the first member 51 has a second surface 511 opposite to the first surface 510, and the mounting hole penetrates through the second surface 511; the mounting hole comprises a matching hole section 512 and a first step hole section 513 which are coaxial and communicated, and the inner diameter of the first step hole section 513 is larger than that of the matching hole section 512.

The second end 525 of the connecting post 523 is riveted to itself at its outer periphery to form a radially outwardly projecting barbed ring portion 526. The barbed loop portion 526 abuts against the bottom surface of the first stepped bore section 513, and the end surface of the second end 525 is flush or recessed with respect to the second face 511 to secure the connection between the first member 51 and the second member 52.

Of course, it is understood that in some other embodiments, the first member 51 and the second member 52 may be assembled by other processes, for example, the first member 51 and the second member 52 are in an interference fit, that is, the connecting post 523 is in an interference fit with the mounting hole, and furthermore, the mounting hole may be a blind hole.

In this embodiment, the mounting hole further includes a second stepped hole section 514 coaxial with and communicating with the first stepped hole section 513, the second stepped hole section 514 is located at an end of the first stepped hole section 513 far away from the mating hole section 512, wherein an inner diameter of the second stepped hole section 514 is greater than an inner diameter of the first stepped hole section 513, a depth of the second stepped hole section 514 is slightly greater than a predetermined riveting depth, and the second stepped hole section 514 is mainly used for avoiding a position during riveting, so that the second end 525 is riveted to form a barb ring portion 526 to be riveted in the first stepped hole section 513.

However, generally, the difference between the inner diameter dimensions of the fitting hole section 512, the first stepped hole section 513 and the second stepped hole section 514 is 0.2 to 1mm in this order, that is, the difference between the inner diameter dimension of the first stepped hole section 513 and the inner diameter dimension of the fitting hole section 512 is 0.2 to 1mm, for example, 0.7mm, but may be 0.5mm,0.8mm or the like. The difference between the inner diameter of the second stepped bore section 514 and the inner diameter of the first stepped bore section 513 is 0.2 to 1mm, for example, 0.7mm, but may be 0.5mm,0.8mm, or the like.

The end surface of the second end 525 is recessed or flush with the second surface 511, and after the connecting column 523 is riveted, the vertical distance between the end surface of the second end 525 of the connecting column 523 and the second surface 511 is 0-1 mm. For example, 0.2mm, i.e., the end surface of the second end 525 is recessed with respect to the second surface 511, and an insulating filler 53 (for example, an insulating paste) covers the first and second stepped

hole sections

513 and 514 and the end surface of the second end 525 and is flush with the second surface 511, so as to prevent the first and

second members

51 and 52 from being chemically corroded by the electrolyte. Also for example, 0mm, i.e., the end surface of the second end 525 is flush with the second surface 511, and at this time, the insulating filler 53 covers the first stepped hole section 513 and the second stepped hole section 514, and the insulating film (formed by, for example, a spray coating process) covers the end surface of the second end 525, which also prevents chemical corrosion.

A radially protruding mounting ring 527 is further formed on the peripheral side of the body portion 521, and an end surface of the mounting ring 527 facing the first surface 510 is used for abutting against the fixing piece 40, so that the top surface of the fixing piece 40 is in abutting fit with the mounting ring 527, thereby restricting the movement of the composite pole 50 relative to the top cover sheet 10 and improving the structural reliability of the integral top cover assembly 100.

In this embodiment, the first material is copper. The second material is aluminum. The first member 51 is used to electrically connect to the battery cell, so that current is conducted to an external conductive element or a power-consuming element connected to the second member 52 via the second member 52 which is fixedly fitted and attached thereto. Of course, in other embodiments of the present application, the first material and the second material may be other materials, for example, the first material may also be a copper alloy, and the second material may also be an aluminum alloy.

The embodiment of the utility model provides a still provides a battery, and this battery includes foretell compound utmost point post 50 and corresponding top cap subassembly 100, consequently also has corresponding structure and beneficial effect, specifically refers to above-mentioned content, and it is no longer repeated here.

To sum up, the embodiment of the utility model provides a compound utmost point post 50, battery and top cap subassembly 100 thereof sets up the mounting hole through the first face 510 with the first component 51 of first material, sets up spliced pole 523 on the body portion 521 of the second component 52 of second material, utilizes spliced pole 523 to cooperate in the mounting hole and fasten, can realize the connection of first component 51 and second component 52 from this, for prior art, the energy consumption is low and need not secondary operation, and the manufacturing process is simple.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention.

Claims

1. A composite pole, comprising:

a first member (51) made of a first material, the first member (51) having a first surface (510) and a mounting hole provided in the first surface (510);

the second component (52) is made of a second material, the second component (52) comprises a body part (521) and a connecting column (523), a first end (524) of the connecting column (523) is connected to the body part (521), and the connecting column (523) is tightly matched with the mounting hole.

2. The composite pole of claim 1, wherein the connecting post (523) is riveted to the mounting hole.

3. The composite pole according to claim 1 or 2, wherein the first member (51) has a second face (511) opposite to the first face (510), the mounting hole extending through the second face (511), wherein the mounting hole comprises a communicating mating hole section (512) and a first stepped hole section (513), the first stepped hole section (513) having an inner diameter dimension larger than the inner diameter dimension of the mating hole section (512);

the connecting column (523) is tightly matched with the matching hole section (512), a second end (525) of the connecting column (523) penetrates through the first step hole section (513), wherein the outer peripheral surface of the second end (525) forms a barb ring part (526) protruding outwards in the radial direction, the barb ring part (526) abuts against the bottom surface of the first step hole section (513), and the end surface of the second end (525) is flush or recessed relative to the second surface (511).

4. The composite pole of claim 3, wherein the mounting bore further comprises a second stepped bore section (514) in communication with the first stepped bore section (513), the second stepped bore section (514) being located at an end of the first stepped bore section (513) distal from the mating bore section (512), wherein an inner diameter dimension of the second stepped bore section (514) is greater than an inner diameter dimension of the first stepped bore section (513).

5. The composite post according to claim 4, wherein the difference between the bore diameters of the first stepped bore section (513) and the mating bore section (512) is 0.2-1 mm;

and/or the presence of a gas in the gas,

the difference between the pore diameters of the second stepped hole section (514) and the first stepped hole section (513) is 0.2-1 mm;

and/or the presence of a gas in the gas,

the vertical distance between the end surface of the second end (525) and the second surface (511) is 0-1 mm.

6. The composite pole according to claim 4, characterized in that the end face of the second end (525) is recessed with respect to the second face (511), and an insulating filler (53) covers the first and second stepped hole sections (513, 514) and the end face of the second end (525) and is flush with the second face (511);

or the like, or, alternatively,

the end face of the second end (525) is flush with respect to the second face (511), an insulating filler (53) covers the first stepped hole section (513) and the second stepped hole section (514), and an insulating film covers the end face of the second end (525).

7. The composite post according to claim 1, wherein the first material is copper; and/or the second material is aluminum.

8. A cap assembly comprising the composite post of any one of claims 1-7.

9. The top cover assembly according to claim 8, further comprising a fixing piece (40), wherein a radially protruding mounting ring (527) is further formed on the peripheral side of the body portion (521), and an end surface of the mounting ring (527) facing the first surface (510) abuts against the fixing piece (40).

10. A battery comprising the cap assembly of claim 8 or 9.