Needle winding assembly and battery cell winding system
By designing a needle roll assembly with assembly holes, positioning projections, guide grooves and locking grooves, the problem of inconvenience in replacing the needle roll when the battery cell winding system is wound with different specifications of core rolling, achieving efficient adaptation and precise assembly.
Patent Information
- Application Number
- CN202420706317.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-07
- Publication Date
- 2025-04-04
- Estimated Expiration
- 2034-04-07
AI Technical Summary
The existing battery cell winding system is not convenient to replace the needle when winding the core of different specifications, and the overall replacement increases the cost, which may cause assembly errors and needle eccentricity.
A needle roll assembly is designed, including an outer needle main body and an inner needle main body. The outer needle main body is equipped with an assembly hole and a positioning protrusion. The inner needle main body is equipped with a guide groove and a locking groove. The positioning protrusion is inserted into the guide groove and moved into the locking groove to realize the assembly of the outer needle main body, which is convenient for replacing the outer needle main body of different specifications.
It realizes the need to adapt to different core specifications without affecting the assembly accuracy of the inner coiling needle body and the winding machine, improves the efficiency of coiling needle replacement, reduces assembly errors, and avoids the problem of coiling needle eccentricity.
Smart Images
Figure CN222720468U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of battery core production equipment, in particular to a winding needle assembly and a battery core winding system. Background Art
[0002] The prior art is to divide the winding needle into two halves, and assemble them by assembling multiple parts.
[0003] The assembly of parts requires high precision, and it is difficult to control the dimensional tolerance of parts processing. After manual assembly, the precision is difficult to control and the strength is poor. It is also inconvenient to replace the winding needle when winding cores of different specifications, and the overall replacement will increase the cost. If the winding needle is replaced multiple times, it may cause assembly errors and result in eccentricity of the winding needle. Utility Model Content
[0004] The utility model aims to provide a winding needle assembly and a battery core winding system to alleviate the technical problem of inconvenience in replacing the winding needle when winding cores of different specifications.
[0005] The utility model provides a needle winding assembly, comprising an outer needle winding body and an inner needle winding body, wherein the outer needle winding body is provided with an assembly hole, and at least two positioning protrusions are provided on the inner wall of the assembly hole;
[0006] A guide groove corresponding to the positioning protrusion is provided on the outer side wall of the inner winding needle body, and the guide groove extends along the first direction, and one end of the guide groove extends to the side of the inner winding needle body and forms an insertion port for inserting the positioning protrusion;
[0007] A locking groove is provided at one end of the guide groove away from the insertion port, and the positioning protrusion is inserted from the insertion port and can move along the guide groove into the locking groove;
[0008] The first direction is the length direction of the inner-rolled needle body.
[0009] In an optional embodiment, a clamping hole is provided in the inner winding needle body, a clamping member is provided in the clamping hole, the clamping member has a first clamping slit penetrating the clamping member along a first direction, and a first clamping opening is formed on a side of the first clamping slit;
[0010] The inner winding needle body is provided with a first winding groove corresponding to the first clamping seam, and the first winding groove extends along the first direction and extends to the side surface of the inner winding needle body to form a second clamping opening;
[0011] The outer winding needle body is provided with a second winding groove corresponding to the first winding groove, and the second winding groove extends along the first direction and extends to the side of the outer winding needle body to form a third clamping opening;
[0012] And the first clamping opening, the second clamping opening and the third clamping opening are on the same straight line.
[0013] In an optional embodiment, four positioning protrusions are evenly arranged on the inner wall of the assembly hole.
[0014] In an optional embodiment, at least two outer grooves are evenly arranged around the circumference of the outer winding needle body.
[0015] In an optional embodiment, a clamping portion is provided at one end of the inner-rolling needle body, and two alignment protrusions are provided at the other end, and the two alignment protrusions are provided on both sides of the center of the inner-rolling needle body.
[0016] In an optional embodiment, the lengths of the clamping member, the inner winding needle body, and the outer winding needle body are shortened successively.
[0017] In an optional embodiment, the clamping member, the inner needle body and the outer needle body are flush at one end, and at the other end the clamping member protrudes out of the inner needle body and the inner needle body protrudes out of the outer needle body.
[0018] The inner winding needle body provided by the utility model is provided with a guide groove, and the positioning protrusion of the outer winding needle body can enter the guide groove from the insertion port and move along the guide groove to the locking groove. The outer winding needle body is rotated to move the positioning protrusion to the locking groove, so that the outer winding needle body can be assembled onto the inner winding needle body; by replacing different outer winding needle bodies, the needs of winding cores of different specifications can be met.
[0019] The utility model provides a battery core winding system, comprising a winding needle assembly as described in any one of the aforementioned implementation modes.
[0020] Compared with the prior art, the battery core winding system provided by the utility model has the winding needle assembly provided by the utility model, and thus has all the beneficial effects of the winding needle assembly provided by the utility model. BRIEF DESCRIPTION OF THE DRAWINGS
[0021] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.
[0022] Figure 1 A schematic diagram of the structure of a needle winding assembly provided in an embodiment of the utility model;
[0023] Figure 2 for Figure 1 A schematic structural diagram of a clamping member of a winding needle assembly shown;
[0024] Figure 3 for Figure 1 A schematic structural diagram of an inner winding needle body of a winding needle assembly shown;
[0025] Figure 4 for Figure 1 A schematic structural diagram of an outer winding needle body of a winding needle assembly shown;
[0026] Figure 5 for Figure 1 Another structural schematic diagram of the outer winding needle body of the winding needle assembly is shown.
[0027] Icons: 100-clamping piece; 200-inner winding needle body; 300-outer winding needle body; 301-first clamping seam; 302-first clamping mouth; 400-outer groove; 700-guide groove; 800-locking groove; 900-clamping part; 110-alignment protrusion; 120-first winding groove; 130-second clamping mouth; 140-clamping hole; 150-assembly hole; 160-positioning protrusion; 170-second winding groove; 180-third clamping mouth. DETAILED DESCRIPTION
[0028] The terms “first”, “second”, “third”, etc. are only used for distinguishing descriptions and do not indicate the order of arrangement, nor can they be understood as indicating or implying relative importance.
[0029] In addition, the terms "horizontal", "vertical", "overhanging" and the like do not mean that the components are required to be absolutely horizontal or overhanging, but can be slightly tilted. For example, "horizontal" only means that its direction is more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but can be slightly tilted.
[0030] In the description of the present application, it should be noted that the terms "inside", "outside", "left", "right", "up", "down", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings, or are directions or positional relationships in which the products of the present application are usually placed when in use. They are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present application.
[0031] In the description of this application, unless otherwise clearly specified and limited, the terms "set", "installed", "connected" and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, and it can be the internal connection of two elements.
[0032] The technical solution of the present application will be described clearly and completely below in conjunction with the accompanying drawings.
[0033] Reference Figure 1-Figure 5 The utility model provides a needle winding assembly, comprising an outer needle winding body 300 and an inner needle winding body 200, wherein the outer needle winding body 300 is provided with an assembly hole 150, and at least two positioning protrusions 160 are provided on the inner wall of the assembly hole 150;
[0034] A guide groove 700 corresponding to the positioning protrusion 160 is provided on the outer side wall of the inner needle body 200, and the guide groove 700 extends along the first direction, and one end of the guide groove 700 extends to the side of the inner needle body 200 and forms an insertion port for inserting the positioning protrusion 160;
[0035] A locking groove 800 is provided at one end of the guide groove 700 away from the insertion port, and the positioning protrusion 160 is inserted from the insertion port and can move along the guide groove 700 into the locking groove 800;
[0036] The first direction is the length direction of the inner-rolled needle body 200 .
[0037] The winding needle assembly includes an outer winding needle body 300 and an inner winding needle body 200. The inner winding needle body 200 is used to be assembled on a winding machine, and the outer winding needle body 300 can be assembled on the inner winding needle body 200. Different outer winding needle bodies 300 can be replaced according to the specifications of the winding core, which will no longer affect the accuracy of the assembly of the inner winding needle body 200 and the winding machine, and can adapt to the specifications of different winding cores.
[0038] An assembly hole 150 is provided on the outer winding needle body 300, and the outer winding needle body 300 is sleeved on the inner winding needle body 200 through the assembly hole 150. During the process of the outer winding needle body 300 being sleeved on the inner winding needle body 200, the positioning protrusion 160 is inserted into the guide groove 700 from the insertion port and the guide groove 700 continues to move until the positioning protrusion 160 moves into the locking groove 800, thereby preventing the outer winding needle body 300 and the inner winding needle body 200 from moving radially. Since the rotation direction of the inner winding needle body 200 is fixed, during the rotation of the inner winding needle body 200, the locking groove 800 drives the positioning protrusion 160 to rotate, so that the positioning protrusion 160 remains in the locking groove 800, that is, during the winding process, the positioning protrusion 160 always remains in the locking groove 800, and the outer winding needle body 300 and the inner winding needle body 200 will not rotate relative to each other.
[0039] The winding needle assembly can meet the needs of winding cores of different specifications by replacing the outer winding needle bodies 300 of different specifications, and can improve the replacement efficiency and reduce assembly errors.
[0040] Reference Figure 2 In an optional embodiment, a clamping hole 140 is provided in the inner winding needle body 200, a clamping member 100 is provided in the clamping hole 140, the clamping member 100 has a first clamping slit 301 penetrating the clamping member 100 along a first direction, and a first clamping opening 302 is formed on the side of the first clamping slit 301;
[0041] The inner winding needle body 200 is provided with a first winding groove 120 corresponding to the first clamping slit 301, and the first winding groove 120 extends along the first direction and extends to the side of the inner winding needle body 200 to form a second clamping opening 130;
[0042] The outer winding needle body 300 is provided with a second winding groove 170 corresponding to the first winding groove 120, and the second winding groove 170 extends along the first direction and extends to the side of the outer winding needle body 300 to form a third clamping opening 180; and the first clamping opening 302, the second clamping opening 130 and the third clamping opening 180 are on the same straight line.
[0043] A clamping hole 140 is provided in the inner needle body 200, and a clamping member 100 is located in the clamping hole 140. The clamping hole 140 is concentrically arranged with the inner needle body 200. The clamping member 100 is a cylinder formed by splicing two semicircles, and a first clamping seam 301 is provided on the clamping member 100.
[0044] A first winding groove 120 is provided on the inner winding needle body 200, and a second winding groove 170 is provided on the outer winding needle body 300. The first winding groove 120, the second winding groove 170 and the first clamping seam 301 can be located on the same straight line and form a clamping groove, and the first clamping mouth 302, the second clamping mouth 130 and the third clamping mouth 180 are all located on the same straight line and form a clamping mouth; after the positive electrode sheet, the diaphragm and the negative electrode sheet are attached to each other, they enter the clamping groove from the clamping mouth, and then are wound by rotating the winding needle assembly, or the diaphragm can be placed on the winding needle assembly, and then the positive electrode sheet and the negative electrode sheet are added during the winding process.
[0045] Reference Figure 4 and Figure 5 In an optional embodiment, four positioning protrusions 160 are evenly arranged on the inner wall of the assembly hole 150 .
[0046] In order to enable the outer winding needle body 300 and the inner winding needle body 200 to rotate synchronously more stably, four positioning protrusions 160 are provided on the inner wall of the assembly hole 150 , and the four positioning protrusions 160 are evenly arranged on the inner wall of the assembly hole 150 .
[0047] Four guide grooves 700 are arranged on the inner winding needle body 200, and each positioning protrusion 160 corresponds to a guide groove 700, so that when the inner winding needle body 200 drives the outer winding needle body 300 to rotate, the outer winding needle body 300 is subjected to more uniform force and rotates more stably.
[0048] In an optional embodiment, at least two outer grooves 400 are evenly arranged around the circumference of the outer winding needle body 300 .
[0049] An outer groove 400 is provided in the circumferential direction of the outer winding needle body 300, and generally two outer grooves 400 are provided, and the two outer grooves 400 are symmetrically arranged on both sides of the outer winding needle body 300; in order to facilitate the removal of the winding core on the winding needle assembly, a tool is inserted into the outer groove 400, and the winding core is removed from the outer winding needle body 300 by the tool; the tool is generally rod-shaped.
[0050] In an optional embodiment, a clamping portion 900 is provided at one end of the inner-rolled needle body 200 , and two alignment protrusions 110 are provided at the other end, and the two alignment protrusions 110 are provided on both sides of the center of the inner-rolled needle body 200 .
[0051] In some embodiments, the clamping portion 900 of the inner winding needle body 200 is used to connect to a winding machine, and the alignment protrusion 110 provided at the other end is conducive to making the assembled winding needle assembly concentric with the winding machine to ensure the quality of the battery cell.
[0052] In an optional embodiment, the lengths of the clamping member 100, the inner winding needle body 200 and the outer winding needle body 300 are successively shorter.
[0053] In an optional embodiment, one end of the clamping member 100 , the inner needle body 200 and the outer needle body 300 are flush, and at the other end the clamping member 100 protrudes from the inner needle body 200 , and the inner needle body 200 protrudes from the outer needle body 300 .
[0054] One end of the clamping member 100 protrudes from the inner needle body 200 , which facilitates the disassembly of the clamping member 100 , and the inner needle body 200 protrudes from the outer needle body 300 , which facilitates the disassembly of the outer needle body 300 .
[0055] The inner winding needle body 200 provided by the utility model is provided with a guide groove 700, and the positioning protrusion 160 of the outer winding needle body 300 can enter into the guide groove 700 from the insertion port and move along the guide groove 700 to the locking groove 800. The outer winding needle body 300 is rotated to move the positioning protrusion 160 into the locking groove 800, so that the outer winding needle body 300 can be assembled onto the inner winding needle body 200; by replacing different outer winding needle bodies 300, the need for winding cores of different specifications can be met.
[0056] The utility model provides a battery core winding system, comprising a winding needle assembly as described in any one of the aforementioned implementation modes.
[0057] Compared with the prior art, the battery core winding system provided by the utility model has the winding needle assembly provided by the utility model, and thus has all the beneficial effects of the winding needle assembly provided by the utility model.
[0058] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, ordinary technicians in this field should understand that they can still modify the technical solutions recorded in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not make the essence of the corresponding technical solution deviate from the scope of the technical solution of the embodiments of the utility model.
Claims
1. A needle winding assembly, characterized in that: It comprises an outer winding needle body (300) and an inner winding needle body (200), wherein the outer winding needle body (300) is provided with an assembly hole (150), and at least two positioning protrusions (160) are provided on the inner wall of the assembly hole (150); A guide groove (700) corresponding to the positioning protrusion (160) is provided on the outer side wall of the inner rolling needle body (200), and the guide groove (700) extends along a first direction, and one end of the guide groove (700) extends to the side of the inner rolling needle body (200) and forms an insertion port for inserting the positioning protrusion (160); A locking groove (800) is provided at one end of the guide groove (700) away from the insertion port, and the positioning protrusion (160) is inserted from the insertion port and can move along the guide groove (700) into the locking groove (800); The first direction is the length direction of the inner-rolled needle body (200).
2. The needle winding assembly according to claim 1, characterized in that: A clamping hole (140) is provided in the inner winding needle body (200), a clamping member (100) is provided in the clamping hole (140), the clamping member (100) has a first clamping slit (301) penetrating the clamping member (100) along a first direction, and a first clamping opening (302) is formed on a side surface of the first clamping slit (301); The inner winding needle body (200) is provided with a first winding groove (120) corresponding to the first clamping slit (301), and the first winding groove (120) extends along the first direction and extends to the side of the inner winding needle body (200) to form a second clamping opening (130); The outer winding needle body (300) is provided with a second winding groove (170) corresponding to the first winding groove (120), and the second winding groove (170) extends along the first direction and extends to the side of the outer winding needle body (300) to form a third clamping opening (180); Furthermore, the first clamping opening (302), the second clamping opening (130) and the third clamping opening (180) are on the same straight line.
3. The needle winding assembly according to claim 1, characterized in that: Four positioning protrusions (160) are evenly arranged on the inner wall of the assembly hole (150).
4. The needle winding assembly according to claim 1, characterized in that: At least two outer grooves (400) are evenly arranged in the circumference of the outer winding needle body (300).
5. The needle winding assembly according to claim 4, characterized in that: One end of the inner-rolling needle body (200) is provided with a clamping portion (900), and the other end is provided with two alignment protrusions (110), and the two alignment protrusions (110) are arranged on both sides of the center of the inner-rolling needle body (200).
6. The needle winding assembly according to claim 2, characterized in that: The lengths of the clamping member (100), the inner winding needle body (200) and the outer winding needle body (300) are successively shorter.
7. The needle winding assembly according to claim 6, characterized in that: One end of the clamping member (100), the inner needle body (200) and the outer needle body (300) are flush, and at the other end the clamping member (100) protrudes from the inner needle body (200), and the inner needle body (200) protrudes from the outer needle body (300).
8. A battery cell winding system, characterized in that: The invention comprises the winding needle assembly as described in any one of claims 1 to 7.