CN217641691U

CN217641691U - Pole structure and battery

Info

Publication number: CN217641691U
Application number: CN202221409842.9U
Authority: CN
Inventors: 何金磊; 徐晓东; 陈国辉
Original assignee: Shanghai Lanjun New Energy Technology Co Ltd
Current assignee: Shanghai Lanjun New Energy Technology Co Ltd
Priority date: 2022-05-30
Filing date: 2022-05-30
Publication date: 2022-10-21
Anticipated expiration: 2032-05-30

Abstract

The utility model provides a utmost point post structure and battery relates to battery technical field. The pole structure comprises an interface part, a base and a series part. The base is provided with a top surface and a bottom surface which are oppositely arranged. The interface part is arranged on the top surface and is externally connected with the output current. One end of the serial part is connected with the bottom surface, and the other end of the serial part extends out of the bottom surface; the series connection part is used for being connected with the winding core. The utility model provides a battery has adopted foretell utmost point post structure. The utility model provides a utmost point post and battery structure can improve the inconvenient technical problem of battery assembling among the prior art.

Description

Pole structure and battery

Technical Field

The utility model relates to a battery technology field particularly, relates to a utmost point post structure and battery.

Background

The battery generally has a positive electrode and a negative electrode, and during assembly, the positive electrode and the negative electrode of the battery are generally formed by assembling a terminal on a top cover of the battery.

However, in the prior art, the terminal generally comprises an external interface layer and a base, the base cannot be directly connected with the winding core, and the terminal needs to be connected through the connecting metal sheet, so that the assembling difficulty of the terminal is increased, the battery is inconvenient to assemble, and the assembling efficiency of the battery is reduced.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a utmost point post structure, it can improve the inconvenient technical problem of battery assembly among the prior art.

The purpose of the utility model is still to include, provide a battery, it can improve the inconvenient technical problem of battery assembly among the prior art.

The embodiment of the utility model discloses a can realize like this:

the embodiment of the utility model provides a pole structure, which comprises a connecting part, a base and a series part;

the base is provided with a top surface and a bottom surface which are oppositely arranged;

the interface part is arranged on the top surface and is used for externally connecting to output current;

one end of the serial part is connected to the bottom surface, and the other end of the serial part extends out of the bottom surface; the series connection part is used for being connected with the winding core.

The utility model provides a utmost point post structure includes for prior art's beneficial effect:

in the assembling process of the battery, because the serial connection part is arranged on one side of the base far away from the connecting port part on the pole structure, and the serial connection part extends to the outside of the base, the end part of the base far away from the serial connection part can be directly connected with the winding core, so that the process steps of increasing the switching metal sheet are saved, the assembling difficulty of the pole structure can be simplified, and the problem that the base is connected with the switching metal sheet unstably due to the additional increase of the switching metal sheet can be prevented. Therefore, the utility model provides a utmost point post structure can improve the inconvenient technical problem of battery assembling among the prior art.

Optionally, at least part of the series portion forms a fuse portion;

the width of the fusing part is smaller than that of the serial part; and/or the thickness of the fusing part is smaller than that of the serial connection part.

Optionally, a fusing hole is formed in the serial connection portion, and at least one side of the fusing hole forms the fusing portion.

Optionally, a fusing groove is formed in the serial connection portion, and a bottom wall of the fusing groove forms the fusing portion.

Optionally, the base is integrally formed with the tandem portion.

Optionally, the base is quadrilateral, and at least one corner of the base is provided with a chamfer.

Optionally, the interface part is arranged in central symmetry with the center thereof as a base point; alternatively, the interface portion may be disposed axially symmetrically with respect to a straight line passing through the center thereof.

Optionally, the serial portion is flat.

Optionally, the thickness of the series part is 0.1mm-3mm.

A battery includes a post structure. The pole structure comprises an interface part, a base and a series part;

the interface part is arranged on the top surface and is externally connected to output current;

The utility model provides a battery has adopted foretell utmost point post structure, and its beneficial effect for prior art is the same with the above-mentioned utmost point post structure that provides for prior art's beneficial effect, no longer gives unnecessary details here.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for 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 that those skilled in the art can also obtain other related drawings based on these drawings without inventive efforts.

Fig. 1 shows a schematic structural diagram of a pole structure provided in a first embodiment;

fig. 2 shows a schematic structural diagram of another pole structure provided in the first embodiment;

fig. 3 shows a schematic structural diagram of a pole structure provided in the second embodiment of the present application;

fig. 4 shows a schematic structural diagram of a first pole structure in a second embodiment of the present application;

fig. 5 shows a schematic structural diagram of a second pole structure in the second embodiment of the present application;

fig. 6 shows a schematic structural diagram of a third pole structure in the second embodiment of the present application;

fig. 7 shows a schematic structural diagram of a fourth pole structure in the second embodiment of the present application;

fig. 8 shows a schematic structural diagram of a fifth pole structure in the second embodiment of the present application.

Icon: a 10-pole structure; 100-an interface section; 200-a base; 201-top surface; 210-chamfering; 300-a series section; 310-a fuse portion; 311-a fuse hole; 312-the fuse chute.

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 invention, as presented in the figures, 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, if the directions or positional relationships indicated by the terms "up", "down", "inside", "outside", etc. appear based on the directions or positional relationships shown in the drawings, or the directions or positional relationships that the products of the present invention are usually placed when used, it is only for convenience of describing the present invention and simplifying the description, but not for indicating or implying that the indicated device or element must have a specific direction, be constructed and operated in a specific direction, and therefore, should not be construed as limiting the present invention.

Furthermore, the appearances of the terms "first," "second," and the like, if any, are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.

It should be noted that the features of the embodiments of the present invention may be combined with each other without conflict.

The embodiment of the application provides a pole structure, which is used for being assembled into a battery to form a positive pole or a negative pole of the battery. It is worth noting that in battery assembly, the post structure needs to be connected to a winding core in the battery.

In the prior art, because the pole cannot be directly connected with the winding core, a metal adapter sheet is required to be added to connect the pole and the winding core, and the welding process and the battery assembly difficulty are increased by adopting the mode; meanwhile, the problem that the connection stability between the pole and the switching metal sheet cannot be guaranteed exists.

Based on this, this application provides a utmost point post structure and adopts the battery of this utmost point post structure to improve the inconvenient technical problem of battery assembly among the prior art.

Example one

Referring to fig. 1, fig. 1 illustrates a schematic structural diagram of a post structure 10 provided in a first embodiment. The present embodiment provides a pole structure 10, and the pole structure 10 includes an interface part 100, a base 200, and a series part 300. The base 200 has a top surface 201 and a bottom surface (not shown) opposite to each other, and when the base 200 is prevented from being on the supporting surface and the bottom surface contacts the supporting surface, the top surface 201 is a side surface of the base 200 away from the supporting surface. The interface part 100 is connected to the top surface 201, and the interface part 100 is externally connected to output current; in the case of the battery being assembled, the interface unit 100 is configured to abut against an external component to output the current of the battery through the external component. One end of the serial portion 300 is connected to the bottom surface, and the other end extends out of the bottom surface.

Based on this, at the in-process of battery assembly, can directly keep away from base 200 with series connection portion 300 the tip be connected with rolling up the core, just can realize being connected of utmost point post structure 10 and book core, not only reduced the process steps of welding utmost point post and switching sheetmetal, simplified the technology of battery assembly, can also avoid the problem that connection stability can not guarantee between utmost point post and the switching sheetmetal. Therefore, the pole post structure 10 provided in the present embodiment can improve the technical problem of inconvenient battery assembly in the prior art.

Alternatively, in the present embodiment, since the width of the serial part 300 is substantially the same as the width of the base 200, a plurality of side edges of the base 200 coincide with a plurality of side surfaces of the serial part 300. Accordingly, the series connection portion 300 can also be regarded as extending from one side surface of the base 200 adjacent to the top surface 201. In other words, when the serial unit 300 extends from one side surface of the base 200 adjacent to the top surface 201 of the base 200, the serial unit 300 may be regarded as being disposed on the bottom surface of the base 200.

In the embodiment, the base 200 and the serial portion 300 are integrally formed, and since the base 200 and the serial portion 300 are integrally formed, the base 200 and the serial portion 300 can be integrally formed, thereby saving the process steps of welding the base 200 and the serial portion 300 and ensuring the positional stability between the serial portion 300 and the base 200.

Optionally, a feature for distinguishing the positive pole structure 10 from the negative pole structure 10 is provided on part of the pole structure 10, because the pole structure 10 has a difference between positive and negative poles. In the present embodiment, the base 200 is substantially quadrangular, and a chamfer 210 is provided on at least one corner of the base 200. It should be noted that, providing a chamfer 210 at least one corner refers to: the base 200 may have a chamfer 210 at only one corner, or may have chamfers 210 at multiple corners.

The chamfer 210 formed on the base 200 can be used to distinguish the pole structure 10. For example, the base 200 of the post structure 10 is provided with a chamfer 210, and the post structure 10 is used for being assembled on the positive electrode of the battery; if the base 200 of the post structure 10 is not provided with a chamfer 210, the post structure 10 is intended to be mounted to the negative electrode of a battery. For another example, the base 200 of the post structure 10 is not provided with the chamfer 210, the post structure 10 is used for being assembled on the positive electrode of the battery, the base 200 of the post structure 10 is provided with the chamfer 210, and the post structure 10 is used for being assembled on the negative electrode of the battery. Of course, it is also possible to distinguish whether the pole structure 10 is a positive electrode for mounting on a battery or a negative electrode for mounting on a battery in such a manner that the number of chamfers 210 provided on the pole structure 10 is different.

It should be noted that, since the base 200 in the pole structure 10 is provided with the chamfer 210, it is possible to distinguish whether the pole structure 10 is assembled on the positive electrode of the battery or assembled on the negative electrode of the battery. Simultaneously also because in the assembly, have on the top cap of battery with the structure of base 200 adaptation, through the setting of chamfer 210, can provide the assembly and prevent slow-witted effect to can prevent to be used for anodal utmost point post structure 10 to adorn in the negative pole of battery by mistake, thereby can distinguish utmost point post structure 10.

It should be understood that in other embodiments of the present application, the provision of chamfer 210 may be eliminated. Of course, other structures may be provided on the base 200 to provide fool-proofing. For example, a groove is formed on the base 200 to provide fool-proof function; for another example, a protrusion is provided on the base 200 to provide fool-proofing function, etc. by the protrusion.

In the present embodiment, the interface part 100 is arranged in a central symmetry manner with the center thereof as a base point; alternatively, the interface portion 100 is disposed axially symmetrically with respect to a straight line passing through the center thereof. In other words, in the present embodiment, the interface section 100 is a symmetrical figure. For example, as shown in FIG. 1, the interface portion 100 is substantially circular, and in this case, the interface portion 100 is represented by a central symmetrical pattern and an axially symmetrical pattern. For another example, as shown in fig. 2, fig. 2 shows a schematic structural diagram of another pole structure 10 provided in the first embodiment; the interface portion 100 is substantially square, and four corners of the interface portion 100 are rounded. Of course, in other embodiments of the present application, the shape of the interface portion 100 may be formed in other shapes, such as a diamond shape, a parallelogram shape, an isosceles trapezoid shape, an isosceles triangle shape, or an oval shape.

In addition, in the present embodiment, the serial part 300 has a flat plate shape, whereby the connection of the serial part 300 to the winding core can be facilitated, in other words, the assembly process of the serial part 300 can be simplified in the process of assembling the battery. Of course, in other embodiments of the present application, the serial connection portion 300 may be disposed in other manners, for example, the serial connection portion 300 has a cylindrical shape, or the serial connection portion 300 has a strip shape.

Optionally, in the present embodiment, the thickness of the serial portion 300 is 0.1mm to 3mm; in other words, the thickness of the series portion 300 may be 0.1mm, 0.2mm, 0.3mm, 0.4mm, 0.5mm, 0.6mm, 0.7mm, 0.8mm, 0.9mm, 1.0mm, 1.1mm, 1.2mm, 1.3mm, 1.4mm, 1.5mm, 1.6mm, 1.7mm, 1.8mm, 1.9mm, 2.0mm, 2.1mm, 2.2mm, 2.3mm, 2.4mm, 2.5mm, 2.6mm, 2.7mm, 2.8mm, 2.9mm, or 3mm.

In summary, in the pole structure 10 provided in this embodiment, in the assembly process of the battery, since the serial connection portion 300 is disposed on the base 200 on the side away from the interface portion 100 of the base 10, and the serial connection portion 300 extends to the outside of the base 200, the end portion of the base 200 away from the base 200 through the serial connection portion 300 can be directly connected to the winding core, so as to save the process steps of adding the adapting metal sheet, not only simplify the assembly difficulty of the pole structure 10, but also prevent the unstable connection between the base 200 and the adapting metal sheet caused by adding the adapting metal sheet. Therefore, the utility model provides a utmost point post structure 10 can improve the inconvenient technical problem of battery assembling among the prior art.

Example two

Referring to fig. 3, fig. 3 is a schematic structural diagram illustrating a post structure 10 provided in the second embodiment of the present application. The post structure 10 is different from the post structure 10 of the first embodiment in that at least a portion of the series connection portion 300 in the post structure 10 also forms a fuse portion 310 in the present embodiment. It should be noted that the structures of the base 200, the series part 300, and the interface part 100 in the pole structure 10 in the present embodiment are substantially the same as the structures of the base 200, the series part 300, and the interface part 100 in the pole structure 10 in the first embodiment, and for a brief description, for parts that are not mentioned in the present embodiment, reference may be made to corresponding contents in the first embodiment.

Referring to fig. 3, in the present embodiment, at least a portion of the series portion 300 further forms a fuse portion 310, wherein the width of the fuse portion 310 is smaller than the width of the series portion 300; and/or, the fuse part 310 has a thickness smaller than that of the series part 300. Wherein "and/or" refers to: only the width of the fusing part 310 may be smaller than the width of the serial part 300; only the fuse portion 310 may have a thickness smaller than that of the serial portion 300; the width of the fusing part 310 may be smaller than that of the serial part 300, and the thickness of the fusing part 310 may be smaller than that of the serial part 300; of course, the partial fusing part 310 may have a width smaller than that of the serial part 300 and the partial fusing part 310 may have a thickness smaller than that of the serial part 300.

In some embodiments of the present invention, referring to fig. 4, fig. 5 and fig. 6, a fuse hole 311 is formed on the serial connection portion 300, and at least one side of the fuse hole 311 forms a fuse portion 310. In other words, the formation of the fusing part 310 may be achieved by forming a hole in the serial part 300. For example, as shown in fig. 4, fig. 4 shows a schematic structural diagram of a first pole structure 10 in a second embodiment of the present application; a fusing hole 311 penetrating the serial connection part 300 is formed in the middle of the serial connection part 300, and fusing parts 310 are formed on both sides of the fusing hole 311, in which case, the number of the fusing parts 310 is two. Of course, in the case of the pole structure 10 shown in fig. 4, in other embodiments, the number of the fusing holes 311 may be two or more, and the number of the fusing parts 310 formed thereby may be more. For another example, as shown in fig. 5, fig. 5 shows a schematic structural diagram of a second pole structure 10 in the second embodiment of the present application; a fuse hole 311 is opened at one side of the serial connection part 300, and the fuse hole 311 has an opening at one side of the serial connection part 300, so that the fuse part 310 can be formed at the other side of the serial connection part 300. For example, as shown in fig. 6, fig. 6 shows a schematic structural diagram of a third pole structure 10 in the second embodiment of the present application; fusing holes 311 are formed at both sides of the serial portion 300, and the two fusing holes 311 are respectively opened at both sides of the serial portion 300, so that the fusing portion 310 is formed at the middle of the serial portion 300. Of course, the fusing hole 311 of fig. 4 and the fusing hole 311 of fig. 5 or 6 may be provided at the same time. Based on this, the fusing part 310 having a smaller width than the serial part 300 may be formed on the serial part 300.

In other embodiments of the present application, please refer to fig. 7 in combination, and fig. 7 illustrates a schematic structural diagram of a fourth electrode post structure 10 in the second embodiment of the present application. The serial portion 300 is provided with a fuse groove 312, and a bottom wall of the fuse groove 312 forms a fuse portion 310. Based on this, the fusing part 310 having a thickness smaller than that of the serial part 300 may be formed on the serial part 300.

It should be noted that, no matter the fusing part 310 is formed by opening the fusing hole 311 or opening the fusing groove 312, the cross-sectional area of the fusing part 310 is smaller than the cross-sectional area of the other positions of the series part 300, so that the resistance at the fusing part 310 is larger, and further, the heat generated by the fusing part 310 is higher under the condition of larger current; meanwhile, the cross-sectional area of the fusing part 310 is small, so that the fusing part 310 is easily fused. Accordingly, when the current is large, the series connection unit 300 can be cut off by fusing the fusing unit 310, and thus the battery can be disconnected, and the safety cut-off capability can be provided in an extreme case.

In addition, in some embodiments of the present disclosure, please refer to fig. 8, and fig. 8 shows a schematic structural diagram of a fifth pole structure 10 in the second embodiment of the present disclosure. That is, the serial portion 300 may be formed with the fusing hole 311 and the fusing groove 312 at the same time, so that the width of the fusing portion 310 is smaller than the width of the serial portion 300, and the thickness of the fusing portion 310 is smaller than the thickness of the serial portion 300.

To sum up, the pole structure 10 provided in the embodiment of the present application can not only improve the technical problem of inconvenient battery assembly in the prior art by setting the mode of the series connection part 300. The fusing part 310 is formed on the series part 300 to improve the safety of the battery in an extreme case, thereby improving the safety of the battery and eliminating the potential safety hazard in the extreme case.

EXAMPLE III

The present embodiment provides a battery, which employs the terminal post structure 10 in the first embodiment or the second embodiment, so as to improve the technical problem of inconvenient battery assembly in the prior art.

The above description is only for the specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention should be covered by the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims

1. A pole structure is characterized by comprising an interface part, a base and a series part;

2. A post structure according to claim 1, wherein at least part of the series portion forms a fuse portion;

3. A post structure according to claim 2, wherein the series portion is provided with a fuse hole, at least one side of the fuse hole forming the fuse portion.

4. A post structure according to claim 2, wherein the series portion is provided with a fusing groove, and a bottom wall of the fusing groove forms the fusing portion.

5. A pole structure as claimed in any one of claims 1 to 4, wherein the base is integrally formed with the series portion.

6. A pole construction according to any one of claims 1-4, characterised in that the base is quadrilateral and that at least one corner of the base is provided with a chamfer.

7. The pole structure of any one of claims 1 to 4, wherein the interface portion is arranged in a central symmetry with a center thereof as a base point; alternatively, the interface portion may be axially symmetrical with respect to a straight line passing through the center thereof.

8. A pole structure as claimed in any one of claims 1 to 4, wherein the series portion is in the form of a plate.

9. A post structure according to claim 8, wherein the series portion has a thickness of 0.1-3 mm.

10. A battery comprising a pole structure according to any one of claims 1 to 9.