CN220895590U

CN220895590U - Rolling needle assembly

Info

Publication number: CN220895590U
Application number: CN202322513028.2U
Authority: CN
Inventors: 王鸿宇; 李中胜; 陈晓龙; 詹世英
Original assignee: Gree Altairnano New Energy Inc
Current assignee: Gree Altairnano New Energy Inc
Priority date: 2023-09-14
Filing date: 2023-09-14
Publication date: 2024-05-03
Anticipated expiration: 2033-09-14

Abstract

The application relates to a winding needle assembly, which comprises a connecting section, a first winding needle section and a second winding needle section, wherein the first winding needle section is connected to one side of the connecting section along a first direction; the second winding needle section is connected with the connecting section and is positioned on one side of the first winding needle section along a second direction, the second winding needle section is movable relative to the first winding needle section in the second direction, and the first direction is perpendicular to the second direction. Therefore, the outer circumference of the winding needle can be adjusted, and before winding, the outer circumference of the winding needle can be adjusted according to the actual required circumference of the winding core so as to process winding cores with different sizes. After winding, if the thickness parameter of the pole piece deviates, the die cutting pole lug of the winding core is misplaced, and the pole lug can be aligned by adjusting the peripheral length of the winding needle so as to prevent the short circuit problem caused by misplacement of the pole lug, and the adjusting mode is convenient and fast, is convenient to control and is beneficial to continuous production of the winding core.

Description

Rolling needle assembly

Technical Field

The application relates to the technical field of battery processing, in particular to a winding needle assembly.

Background

The square lithium ion battery used in the market at present has an internal main structure of a winding type winding core. In the prior art, the winding needle used for the square lithium ion battery winding core is generally a fixed winding needle which cannot be adjusted, however, the outer circumference of the winding needle when the winding core is wound cannot be adjusted according to actual conditions.

Disclosure of utility model

The present application aims to solve at least one of the technical problems existing in the prior art. Therefore, an objective of the present application is to provide a winding core assembly to solve the problem that the winding needle of the winding needle assembly cannot adjust the outer circumference.

In order to achieve the above object, an embodiment of the present application provides a winding core assembly, including: a connection section; a first winding needle section connected to one side of the connection section in a first direction; the second winding needle section is connected with the connecting section and is positioned on one side of the first winding needle section along a second direction, the second winding needle section is movable relative to the first winding needle section in the second direction, and the first direction is perpendicular to the second direction.

Therefore, the second winding needle section can move relative to the first winding needle section in the second direction, the outer circumference of the winding needle can be adjusted, and before winding, the outer circumference of the winding needle can be adjusted according to the actual required circumference of the winding core, so that winding cores with different sizes can be processed conveniently, and the application range of the winding needle assembly is improved. After winding, if the thickness parameters of the pole piece deviate, the die cutting pole lugs of the winding core are misplaced, the pole lugs can be aligned by adjusting the peripheral length of the winding needle, the short circuit problem caused by misplacement of the pole lugs can be prevented, the adjustment mode is convenient and rapid, the control is convenient, and the continuous production of the winding core is facilitated.

In some embodiments, further comprising: the moving mechanism is used for adjusting the distance between the first winding needle section and the second winding needle section in the second direction, and the second winding needle section is connected with the connecting section through the moving mechanism.

In some embodiments, the moving mechanism comprises a gear and a rack meshed with the gear, wherein one of the connecting section and the second winding needle section is provided with the gear, and the other is provided with the rack.

In some embodiments, the rack is provided on the second needle-winding section, the second needle-winding section having a receiving slot, the rack being located within the receiving slot.

In some embodiments, the plurality of racks is a plurality of racks spaced apart along the first direction; or the two sides of the rack along the first direction are positioned at the edges of the two sides of the accommodating groove along the first direction.

In some embodiments, the gear is disposed through the receiving slot.

In some embodiments, the plurality of racks are arranged at intervals along the third direction and are respectively located at two opposite sides of the gear, and the third direction is perpendicular to the first direction and the second direction.

In some embodiments, the first needle-winding section comprises a first sub-winding needle portion and a second sub-winding needle portion arranged side by side in a second direction, the first sub-winding needle portion and the second sub-winding needle portion being adapted to jointly grip a septum.

In some embodiments, the outer surface of the side of the second winding needle section away from the first winding needle section is an arc surface.

In some embodiments, the number of the second winding needle sections is two, wherein one second winding needle section is arranged on one side of the first winding needle section, and the other second winding needle section is arranged on the other side of the first winding needle section.

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.

In order to more clearly illustrate the embodiments of the application or the technical solutions of the prior art, the drawings which are used in the description of the embodiments or the prior art will be briefly described, and it will be obvious to a person skilled in the art that other drawings can be obtained from these drawings without inventive effort.

One or more embodiments are illustrated by way of example and not limitation in the figures of the accompanying drawings, in which like references indicate similar elements, and in which the figures of the drawings are not to be taken in a limiting sense, unless otherwise indicated.

FIG. 1 is a perspective view of a needle assembly according to an embodiment of the present application;

FIG. 2 is a front view of a needle assembly according to an embodiment of the present application;

fig. 3 is a side view of a winding needle assembly according to an embodiment of the present application.

Reference numerals illustrate:

100. a winding needle assembly; A. a first direction; B. a second direction;

10. A connection section; 20. a first winding needle section; 21. a first sub-winding needle part; 22. a second sub-winding needle part;

30. a second winding needle section; 31. a receiving groove;

40. a moving mechanism; 41. a gear; 42. a rack.

Detailed Description

For the purpose of making the objects, technical solutions and advantages of the embodiments of the present application more apparent, the technical solutions of the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application, and it is apparent that the described embodiments are some embodiments of the present application, but not all embodiments of the present application. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to be within the scope of the application.

The following disclosure provides many different embodiments, or examples, for implementing different structures of the application. In order to simplify the present disclosure, components and arrangements of specific examples are described below. They are, of course, merely examples and are not intended to limit the application. Furthermore, the present application may repeat reference numerals and/or letters in the various examples. This repetition is for the purpose of simplicity and clarity and does not in itself dictate a relationship between the various embodiments and/or configurations discussed. In addition, the present application provides examples of various specific processes and materials, but one of ordinary skill in the art will recognize the applicability of other processes and/or the use of other materials.

For ease of description, spatially relative terms, such as "inner," "outer," "upper," "lower," "left," "right," "front," "back," "length," "width," "thickness," and the like, may be used herein to describe relative positional relationships or movement of one element or feature relative to another element or feature as illustrated in the figures. Such spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figure experiences a position flip or a change in attitude or a change in state of motion, then the indications of these directivities correspondingly change, for example: an element described as "under" or "beneath" another element or feature would then be oriented "over" or "above" the other element or feature. Accordingly, the example term "below … …" may include both upper and lower orientations. The device may be otherwise oriented (rotated 90 degrees or in other directions) and the spatial relative relationship descriptors used herein interpreted accordingly.

In the description of the present application, "plurality" means two or more.

In order to solve the technical problem that the outer circumference of a winding needle assembly cannot be adjusted in the prior art, the application provides the winding needle assembly 100, and the winding length of the winding needle assembly 100 can be adjusted according to actual requirements so as to process winding cores with different sizes, and the occurrence of dislocation of pole lugs can be prevented.

A winding needle assembly 100 according to an embodiment of the present application is described below with reference to the accompanying drawings, in which a first direction is indicated by an arrow a, a second direction is indicated by an arrow B, and a third direction is indicated by an arrow C.

The winding needle assembly 100 according to an embodiment of the present application comprises a connection section 10, a first winding needle section 20 and a second winding needle section 30.

Specifically, as shown in fig. 1 to 3, the first winding needle section 20 is connected to one side of the connection section 10 along the first direction a, and the second winding needle section 30 is connected to the connection section 10 and located on one side of the first winding needle section 20 along the second direction B, where the connection may be a direct connection or an indirect connection, and is not limited herein. The second needle-winding section 30 is movable relative to the first needle-winding section 20 in a second direction B, the first direction a and the second direction B being perpendicular.

It will be appreciated that the connector segment 10 may function to connect multiple components. The first winding needle section 20 and the second winding needle section 30 may together constitute a winding needle for winding the winding core. The positive pole piece, the diaphragm and the negative pole piece can be wound together through the first winding needle section 20 and the second winding needle section 30 to form a winding core, when the tab of the winding core is deviated due to thickness fluctuation of the pole piece, the surface circumference can be adjusted by adjusting the distance between the second winding needle section 30 and the first winding needle section 20 in the second direction B, and the alignment setting of the tab can be realized without sticking adhesive tape such as Teflon on the surface of the winding needle.

Thus, by making the second needle section 30 movable in the second direction B relative to the first needle section 20, the outer circumference of the needle can be adjusted, and before winding, the outer circumference of the needle can be adjusted according to the actual desired circumference of the core, so as to facilitate processing cores of different sizes and improve the applicability of the needle assembly 100. After winding, if the thickness parameters of the pole piece deviate, the die cutting pole lugs of the winding core are misplaced, the pole lugs can be aligned by adjusting the peripheral length of the winding needle, the short circuit problem caused by misplacement of the pole lugs can be prevented, the adjustment mode is convenient and rapid, the control is convenient, and the continuous production of the winding core is facilitated.

In some embodiments, the needle assembly 100 further comprises a movement mechanism 40, the second needle section 30 is connected to the connecting section 10 by the movement mechanism 40, and the movement mechanism 40 is used to adjust the distance between the first needle section 20 and the second needle section 30 in the second direction B, so as to adjust the outer circumference of the needle. The manner in which the movement mechanism 40 adjusts the movement of the first winding needle section 20 and the second winding needle section 30 may be a sliding connection or a rolling connection, which is not limited herein.

In some embodiments, as shown in fig. 1, the moving mechanism 40 includes a gear 41 and a rack 42 engaged with the gear 41, one of the connection section 10 and the second winding needle section 30 is provided with the gear 41, the other one of the connection section 10 and the second winding needle section 30 is provided with the rack 42, and the rack 42 has a plurality of teeth engaged with the gear 41 and disposed side by side along the second direction B. It will be appreciated that the gear 41 is movable relative to the rack 42 in the second direction B upon rotation to adjust the distance between the first and second needle sections 20, 30 in the second direction B to adjust the outer circumference of the needle in a manner that is simple and reliable. Of course, the needle assembly 100 may also include a stop (not shown) to limit relative movement between the second needle section 30 and the first needle section 20 when it is not necessary to adjust the distance therebetween.

Further, as shown in fig. 3, a rack 42 is provided on the second winding pin section 30, i.e. a gear 41 is provided on the connecting section 10. The second winding needle section 30 has a receiving slot 31, and a rack 42 is provided in the receiving slot 31. By providing the accommodation groove 31, on the one hand, it is possible to facilitate reduction of the occupied areas of the gear 41 and the rack 42; on the other hand, it is possible to facilitate an increase in the mating area of the rack 42 and the gear 41 to improve the stability of the mating of the two.

In some embodiments, the racks 42 may be plural, and the plural racks 42 are disposed at intervals along the first direction a. In other embodiments, both sides of the rack 42 in the first direction a are located at edges of both sides of the receiving groove 31 in the first direction a. Therefore, the above two arrangement modes can improve the matching area of the gear 41 and the rack 42, so as to improve the stability of the matching transmission of the gear 41 and the rack 42, and further facilitate the processing of winding cores with different sizes, and improve the application range of the winding needle assembly 100.

In some embodiments, as shown in fig. 1, the gear 41 is disposed through the accommodating groove 31, that is, the gear 41 is disposed through the accommodating groove 31 in the first direction a, so as to facilitate increasing the mating area of the gear 41 and the rack 42, and improving the reliability of the mating of the gear 41 and the rack 42, so as to improve the accuracy of adjustment.

In some embodiments, as shown in fig. 3, the racks 42 are plural, and the plural racks 42 are disposed at intervals along the third direction C and are respectively located on two opposite sides of the accommodating groove 31, where the third direction C is perpendicular to both the first direction a and the second direction B. Thereby, both opposite sides of the gear 41 can be engaged with the rack 42 to improve the reliability of the engagement of the gear 41 and the rack 42 to improve the accuracy of adjustment.

In some embodiments, as shown in fig. 1-3, there are two second needle roller segments 30, one second needle roller segment 30 being disposed on one side of the first needle roller segment 20 and the other second needle roller segment 30 being disposed on the other side of the first needle roller segment 20 in the second direction B. The two second winding needle sections 30 are movable on both sides of the first winding needle section 20 in the second direction B, respectively, so that the outer circumference of the winding needle can be adjusted to align the tabs on both sides in the second direction B.

Further, as shown in fig. 1-2, the two moving mechanisms 40 are two, and the two moving mechanisms 40 respectively adjust the distances of the two second winding needle sections 30 in the second direction B relative to the first winding needle section 20. It can be understood that the two moving mechanisms 40 are also two corresponding to the second winding needle sections 30, and the two moving mechanisms 40 respectively adjust the distances between the two second winding needle sections 30 in the second direction B relative to the first winding needle sections 20 so as to separately adjust, which can facilitate the adjustment and alignment of the tab at any second winding needle section 30 in a targeted manner, so as to improve the accuracy of the adjustment.

In some embodiments, as shown in fig. 1-2, the first needle section 20 comprises a first sub-needle portion 21 and a second sub-needle portion 22 arranged side by side in the second direction B, the first sub-needle portion 21 and the second sub-needle portion 22 being adapted to jointly sandwich the septum. When winding starts, the winding needle is in a horizontal state, and after the upper and lower layers of the diaphragm simultaneously penetrate between the first sub-winding needle part 21 and the second sub-winding needle part 22, the first sub-winding needle part 21 and the second sub-winding needle part 22 can relatively move in the second direction B to clamp the diaphragm. After the winding needle rotates for a circle, the positive pole piece and the negative pole piece are respectively inserted between the upper and lower layers of diaphragms in an inclined mode at the position where the two second winding needle sections 30 form an included angle with the diaphragms, and the winding needle continuously rotates to finish winding of the two pole pieces and the diaphragms. The stability of the diaphragm during winding can be improved by arranging the first sub-winding needle part 21 and the second sub-winding needle part 22, so that the alignment of the tabs is ensured, and the alignment degree of the tabs is improved.

In some embodiments, as shown in fig. 1, the outer surface of the side, away from the first winding needle section 20, of the second winding needle section 30 is an arc surface, so that friction between the second winding needle section 30 and the winding core can be reduced, quality of the winding core is improved, and alignment degree of the tab is improved.

Other constructions and operations of the needle roller assembly 100 according to embodiments of the present application are known to those of ordinary skill in the art and will not be described in detail herein.

It is to be understood that the terminology used herein is for the purpose of describing particular example embodiments only, and is not intended to be limiting. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. The terms "comprises," "comprising," "includes," "including," and "having" are inclusive and therefore specify the presence of stated features, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, steps, operations, elements, components, and/or groups thereof. The method steps, processes, and operations described herein are not to be construed as necessarily requiring their performance in the particular order described or illustrated, unless an order of performance is explicitly stated. It should also be appreciated that additional or alternative steps may be used.

Although the terms first, second, third, etc. may be used herein to describe various elements, components, regions, layers and/or sections, these elements, components, regions, layers and/or sections should not be limited by these terms. These terms may be only used to distinguish one element, component, region, layer or section from another region, layer or section. Terms such as "first," "second," and other numerical terms when used herein do not imply a sequence or order unless clearly indicated by the context. Thus, a first element, component, region, layer or section discussed below could be termed a second element, component, region, layer or section without departing from the teachings of the example embodiments.

The foregoing is only a specific embodiment of the application to enable those skilled in the art to understand or practice the application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the application. Thus, the present application is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A winding needle assembly (100), comprising:

a connecting section (10);

A first winding needle section (20), the first winding needle section (20) being connected to one side of the connection section (10) in a first direction (a);

The second winding needle section (30), the second winding needle section (30) is connected with the connecting section (10) and is located on one side of the first winding needle section (20) along a second direction (B), the second winding needle section (30) is movable relative to the first winding needle section (20) in the second direction (B), and the first direction (A) and the second direction (B) are perpendicular.

2. The needle roller assembly (100) of claim 1, further comprising: the moving mechanism (40) is used for adjusting the distance between the first winding needle section (20) and the second winding needle section (30) in the second direction (B), and the second winding needle section (30) is connected with the connecting section (10) through the moving mechanism (40).

3. The winding needle assembly (100) according to claim 2, wherein the moving mechanism (40) comprises a gear (41) and a rack (42) meshed with the gear (41), wherein one of the connecting section (10) and the second winding needle section (30) is provided with the gear (41), and the other of the connecting section (10) and the second winding needle section (30) is provided with the rack (42).

4. A needle assembly (100) according to claim 3, wherein the rack (42) is provided in the second needle section (30), the second needle section (30) having a receiving groove (31), the rack (42) being located within the receiving groove (31).

5. The needle roller assembly (100) of claim 4, wherein the plurality of racks (42) are spaced apart along the first direction (a); or the rack (42) is positioned at edges of both sides of the accommodating groove (31) along the first direction (A) along both sides of the first direction (A).

6. The winding needle assembly (100) according to claim 4, wherein the gear (41) is provided through the receiving groove (31).

7. A needle winding assembly (100) according to claim 3, wherein the plurality of racks (42) are arranged at intervals along a third direction (C) and are respectively located at two opposite sides of the gear (41), and the third direction (C) is perpendicular to the first direction (a) and the second direction (B).

8. The needle assembly (100) according to claim 1, wherein the first needle section (20) comprises a first sub-needle portion (21) and a second sub-needle portion (22) arranged side by side in the second direction (B), the first sub-needle portion (21) and the second sub-needle portion (22) being adapted to jointly grip a membrane.

9. The needle assembly (100) of claim 1, wherein an outer surface of a side of the second needle section (30) remote from the first needle section (20) is an arcuate surface.

10. The needle assembly (100) according to any one of claims 1-9, wherein the number of second needle sections (30) is two, wherein one of the second needle sections (30) is arranged on one side of the first needle section (20) and the other second needle section (30) is arranged on the other side of the first needle section (20).