Lithium battery winding needle device

Abstract

The utility model discloses a lithium battery winding needle device in the field of battery processing, and aims to solve the problem that in the prior art, a winding needle is not easy to replace, and one end of the winding needle is detachably mounted on a connector; the connector comprises a sliding sleeve and a neck bush, the sliding sleeve is connected to the neck bush in a sliding mode, steel balls are embedded in the inner wall of the neck bush and are close to the inner wall of the sliding sleeve, and clamping grooves matched with the steel balls are formed in the winding needle. The winding needle is detachably mounted in the neck bush through the matching of the steel balls and the clamping grooves; and a fixing ring for placing the steel ball is arranged on the inner wall of the sliding sleeve. The steel ball is arranged in the connector, the clamping groove is formed in the winding needle, the winding needle and the connector are installed together through matching of the steel ball and the clamping groove, the fixing ring is adjusted to be close to the clamping groove by sliding the sliding sleeve, and the steel ball in the clamping groove falls into the fixing ring, so that the winding needle and the connector can be separated, the winding needle can be rapidly disassembled and assembled, and the winding needle can be rapidly replaced.

Description

Technical Field

[0001] This application relates to the field of battery processing, and particularly to a lithium battery winding needle device. Background Art

[0002] Lithium-ion soft-pack batteries have excellent performance such as long cycle life, high energy density, and small volume. At the same time, they have a small internal resistance, which helps to reduce the self-power consumption of the battery and enables the battery to have good cycle life and rate characteristics. In the winding process, the battery positive plate, negative plate, and separator are assembled into an electric core in a continuous rotation manner through a winding device. When it is necessary to produce electric cores of different shapes and specifications, the winding needle on the winding needle mechanism needs to be replaced. However, the existing winding needle structure is complex to install. When replacing the winding needle, the joint installed on the device frame needs to be disassembled and replaced together, and then reinstalled, which seriously affects the winding efficiency, equipment utilization rate, and product yield. Utility Model Content

[0003] The purpose of this application is to provide a lithium battery winding needle device. Steel balls are provided on the joint. The steel balls cooperate with the card slots at one end of the winding needle to install the winding needle on the joint for use. When disassembling, move the sliding sleeve, the steel balls fall into the fixed ring, and the winding needle is taken out. The winding needle is convenient to disassemble and install, and is easy to replace.

[0004] To solve the above technical problems, the following technical solutions are adopted:

[0005] This application provides a lithium battery winding needle device, including a joint, a winding needle, and a needle sleeve. The joint and the needle sleeve are installed on the device frame. A winding needle is provided between the joint and the needle sleeve. The joint, the winding needle, and the needle sleeve are on the same horizontal line. One end of the winding needle is detachably installed on the joint;

[0006] The joint includes a sliding sleeve and a lining sleeve. The sliding sleeve is slidably connected to the lining sleeve. Steel balls are embedded on the inner wall of the lining sleeve. The steel balls are close to the inner wall of the sliding sleeve. Card slots are provided on the winding needle to cooperate with the steel balls. The winding needle is detachably installed in the lining sleeve through the cooperation of the steel balls and the card slots;

[0007] The inner wall of the sliding sleeve is provided with a fixed ring for placing the steel balls. When disassembling the winding needle, the steel balls fall from the card slots into the fixed ring, and the winding needle is separated from the lining sleeve.

[0008] Optionally, one end of the lining sleeve is installed on a moving shaft. A joint spring is provided at the end where the lining sleeve is installed on the moving shaft. The joint spring is located between the sliding sleeve and the lining sleeve. One end of the joint spring is limited by the moving shaft, and the other end is limited by a clamping seat on the sliding sleeve.

[0009] Optionally, a bushing base is provided inside the inner bushing, and the bushing base is used to limit the installation position of the coiling needle inside the inner bushing.

[0010] Optionally, the coiling needle includes a coiling needle base and coiling needle pieces. The coiling needle pieces are installed on the coiling needle base. The coiling needle pieces include an upper coiling needle piece and a lower coiling needle piece. Pin holes are provided on the upper coiling needle piece and the lower coiling needle piece, and the upper coiling needle piece and the lower coiling needle piece are installed together through the pin holes and pins provided in the pin holes;

[0011] An upper coiling needle head is provided at one end of the upper coiling needle piece away from the installation on the coiling needle base, and a lower coiling needle head is provided at one end of the lower coiling needle piece away from the installation on the coiling needle base; the upper coiling needle head and the lower coiling needle head are arranged inside the needle sleeve;

[0012] The coiling needle base is two semi - circles divided into two parts, and the two semi - circles are connected by fixing screw holes provided thereon and fixing screws in the fixing screw holes.

[0013] Optionally, a coiling needle spring is provided at one end of the coiling needle base where no coiling needle piece is installed, and the card slot is arranged at one end of the coiling needle base close to the coiling needle spring.

[0014] Optionally, a pin locking screw for locking the pin is provided on the coiling needle base, and one end of the pin locking screw extends into the pin hole to lock the pin.

[0015] Optionally, an upper balance spring is provided between the upper coiling needle piece and the coiling needle base, and a lower balance spring is provided between the lower coiling needle piece and the coiling needle base.

[0016] Optionally, a first adjusting screw and a second adjusting screw for adjusting the position of the upper coiling needle piece, a first stop screw and a second stop screw for limiting the position of the upper coiling needle piece are provided on the coiling needle base; a third adjusting screw for adjusting the position of the lower coiling needle piece and a third stop screw for limiting the position of the lower coiling needle piece are also provided on the coiling needle base.

[0017] Optionally, a positioning pin is provided on the coiling needle base, and the positioning pin is in snap - fit with a positioning pin buckle provided on the connector to position the center position of the coiling needle.

[0018] Optionally, the needle sleeve includes a needle sleeve base, a first shaft sleeve, a second shaft sleeve, a steel needle, a first bearing and a second bearing. The first bearing and the second bearing are respectively installed at both ends of the needle sleeve base through bearing locking screws. The first shaft sleeve is arranged inside the first bearing. The second shaft sleeve is provided with a steel needle, and the second shaft sleeve and the steel needle are installed in the first shaft sleeve through a steel needle locking screw.

[0019] Beneficial effects achieved by the present application compared with the prior art:

[0020] 1. In the present utility model, steel balls are arranged inside the joint, and a card slot is arranged on the winding needle. The winding needle and the joint are installed together through the cooperation of the steel balls and the card slot. By sliding the sliding sleeve, the fixing ring is adjusted to be close to the card slot, and the steel balls in the card slot fall into the fixing ring, so that the winding needle and the joint can be separated, realizing the quick disassembly and assembly of the winding needle and enabling the quick replacement of the winding needle.

[0021] 2. A winding needle spring is arranged on the winding needle of the winding needle device provided by the present utility model. During disassembly, the winding needle spring pops out the winding needle, facilitating the quick disassembly of the winding needle.

[0022] 3. An adjusting screw is arranged on the winding needle of the present utility model. The positions of the upper and lower winding needle pieces are adjusted through the adjusting screw to meet the usage requirements, and the adjusting screw is locked by a check screw for use. Description of the Drawings

[0023] Figure 1 Schematic installation diagram of a lithium battery winding needle device provided by an embodiment of the present application;

[0024] Figure 2 Schematic diagram of the joint structure provided by an embodiment of the present application;

[0025] Figure 3 Schematic diagram of the split structure of the winding needle provided by an embodiment of the present application;

[0026] Figure 4 Schematic diagram of the overall structure of the winding needle provided by an embodiment of the present application;

[0027] Figure 5 Schematic diagram of the needle sleeve structure provided by an embodiment of the present application.

[0028] Description of the reference numerals:

[0029] 02. Connector; 200. Sliding sleeve; 201. Connector spring; 202. Steel ball; 203. Bushing base; 204. Fixed ring; 205. Moving shaft; 206. Positioning pin buckle; 03. Winding needle; 300. Winding needle spring; 301. Winding needle base; 302. Card slot; 303. Positioning shaft pin; 304. Fixed screw hole; 305. Upper balance spring; 306. Shaft pin hole; 307. First adjusting screw; 308. First stop screw; 309. Second adjusting screw; 310. Second stop screw; 311. Upper winding needle piece; 312. Upper winding needle head; 313. Fixed screw; 314. Lower balance spring; 315. Shaft pin locking screw; 316. Shaft pin; 317. Third adjusting screw; 318. Third stop screw; 319. Lower winding needle piece; 320. Lower winding needle head; 04. Needle sleeve; 400. Needle sleeve base; 401. First bushing; 402. Second bushing; 403. Steel needle; 404. Bearing locking screw; 405. First bearing; 406. Second bearing; 407. Steel needle locking screw. Detailed implementation mode

[0030] The technical solutions in 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. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. The following description of at least one exemplary embodiment is actually only illustrative and in no way constitutes a limitation to the present application and its application or use. Embodiment 1

[0031] As Figures 1-5 shown, this embodiment provides a lithium battery winding needle device, including a connector 02, a winding needle 03 and a needle sleeve 04. The connector 02 and the needle sleeve 04 are installed on the device frame. A winding needle 03 is provided between the connector 02 and the needle sleeve 04. One end of the winding needle 03 is detachably installed on the connector 02;

[0032] The connector 02 includes a sliding sleeve 200 and an inner bushing. The sliding sleeve 200 is slidably connected to the inner bushing. Steel balls 202 are embedded in the inner bushing. The steel balls 202 are close to the inner wall of the sliding sleeve 200. The winding needle 03 is provided with a card slot 302 that cooperates with the steel balls 202. The winding needle 03 is detachably installed in the inner bushing through the cooperation of the steel balls 202 and the card slot 302;

[0033] The inner wall of the sliding sleeve 200 is provided with a fixed ring 204 for placing the steel balls 202. When the winding needle 03 is disassembled, the steel balls 202 fall into the fixed ring 204 from the card slot 302, and the winding needle 03 is separated from the inner bushing.

[0034] The inner wall of the sliding sleeve 200 contacts the outer wall of the inner lining sleeve. The steel balls 202 are embedded in the steel ball holes formed in the inner lining sleeve, and the steel ball holes extend from the inner wall to the outer wall of the inner lining sleeve.

[0035] The fixing ring 204 on the inner wall of the sliding sleeve 200 is composed of a semi-circular groove on the outer wall of the inner lining sleeve and a groove on the inner wall of the sliding sleeve.

[0036] When installing the winding needle 03, push the sliding sleeve 200. The steel balls 202 in the sliding sleeve 200 move towards the fixing ring 204. When the steel balls 200 are located at the fixing ring 204, the space of the inner lining sleeve is suitable for the end of the winding needle 03. Insert the end of the winding needle 03 with the card slot 302 into the inner lining sleeve. When the steel balls 202 contact the card slot 302, they fall into the card slot 302, and the sliding sleeve 200 returns to its initial position. Through the cooperation of the card slot 302 and the steel balls 202, one end of the winding needle 03 is limited in the inner lining sleeve. When disassembling the winding needle 03, push the sliding sleeve 200. When the fixing ring 204 contacts the steel balls 202, the steel balls 202 fall from the card slot 302 into the fixing ring 204, and the winding needle 03 is taken out. Embodiment 2

[0037] This embodiment provides a lithium battery winding needle device, which is different from Embodiment 1 in that one end of the inner lining sleeve is installed on the moving shaft 205. A joint spring 201 is provided at one end of the inner lining sleeve installed on the moving shaft 205. The joint spring 201 is located between the sliding sleeve 200 and the inner lining sleeve. One end of the joint spring 201 is limited by the moving shaft 205, and the other end is limited by a clamping seat on the inner wall of the sliding sleeve 200. A bushing base 203 is provided in the inner lining sleeve, and the bushing base 203 is used to limit the installation position of the winding needle 03 in the inner lining sleeve.

[0038] The winding needle 03 includes a winding needle base 301 and winding needle pieces. The base is composed of two semi-circles, and the two semi-circles are connected by the fixing screw holes 304 provided thereon and the fixing screws 313 in the fixing screw holes 304. One end of the winding needle base 301 is installed with winding needle pieces, and the other end is provided with a winding needle spring 300. A card slot 302 is also provided at the end of the winding needle base 301 where the winding needle spring 300 is provided.

[0039] One end of the joint spring 201 is limited by the moving shaft 205, and the other end is limited by the clamping seat on the inner wall of the sliding sleeve 200. When the sliding sleeve 200 is pushed towards the moving shaft 205, the fixing ring 204 in the sliding sleeve 200 moves towards the steel ball 202, the joint spring 201 is compressed under force, the steel ball 202 falls into the fixing ring 204 from the steel ball hole position, the internal space of the inner lining sleeve is not restricted by the steel ball 202, one end of the winding needle base 301 is inserted into the inner lining sleeve, and the winding needle spring 300 on the winding needle base 301 contacts and is compressed by the bushing base 203. When the winding needle spring 300 is compressed to the maximum amount, the winding needle base 301 contacts the bushing base 203. At this time, the steel ball 202, the steel ball hole position, the fixing ring 204 and the card slot 302 are aligned.

[0040] Since the joint spring 201 is compressed, after releasing the force pushing the sliding sleeve 200, the joint spring 201 returns to its original state, pushing the sliding sleeve 200 back to its original state, the fixing ring 204 moves away from the card slot 302, and a part of the steel ball 202 is in the steel ball hole and a part is in the card slot 302 to limit the position of the winding needle.

[0041] Since the winding needle spring 300 is compressed, after releasing the winding needle, the winding needle spring 300 applies a force towards the winding needle base 301 direction, the steel ball 202 restricts the movement of the winding needle 03, and the force applied by the winding needle spring 300 to the winding needle base 301 makes one end of the steel ball 202 in close contact with the steel ball hole position and the other end in close contact with the inner wall of the card slot 302, realizing the stable installation of the winding needle 03 for use in the joint 02.

[0042] The winding needle piece includes the upper winding needle piece 311 and the lower winding needle piece 319. The upper winding needle piece 311 and the lower winding needle piece 319 are provided with pin holes 306, and the upper winding needle piece 311 and the lower winding needle piece 319 are installed together through the pin holes 306 and the pins 316 provided in the pin holes 306; one end of the upper winding needle piece 311 away from the installation on the winding needle base 301 is provided with an upper winding needle head 312, one end of the lower winding needle piece 3,19 away from the installation on the winding needle base 301 is provided with a lower winding needle head 320, and the upper winding needle head 312 and the lower winding needle head 320 are arranged in the needle sleeve 04.

[0043] The winding needle base 301 is provided with a pin locking screw 315 for locking the pin 316, and one end of the pin locking screw 315 extends into the pin hole 306 to lock the pin 316.

[0044] An upper balance spring 305 is provided between the upper winding needle piece 311 and the winding needle base 301, and a lower balance spring 314 is provided between the lower winding needle piece 319 and the winding needle base 301.

[0045] The upper winding needle piece 311 and the lower winding needle piece 319 are flat trapezoidal shapes. The two long side surfaces of the upper winding needle piece 311 and the lower winding needle piece 319 are in contact with each other. On the winding needle base 301, there are a first adjusting screw 307 and a second adjusting screw 309 for adjusting the left - right position of the upper winding needle piece 311. The first adjusting screw 307 and the second adjusting screw 309 are arranged perpendicular to the surfaces of the upper winding needle piece 311 and the winding needle base 301. The first adjusting screw 307 is locked and used through a first check screw 308. The first check screw 308 is arranged perpendicular to the first adjusting screw 307 on the winding needle base 301. The second adjusting screw 309 is locked and used through a second check screw 310. The second check screw 310 is arranged perpendicular to the second adjusting screw 309 on the winding needle base 301.

[0046] On the winding needle base 301, there is also a third adjusting screw 317 for adjusting the left - right position of the lower winding needle piece 319. The third adjusting screw 317 is arranged perpendicular to the surfaces of the lower winding needle piece 319 and the winding needle base 301. The third adjusting screw 317 is locked and used through a third check screw 318. The third check screw 318 is arranged perpendicular to the third adjusting screw 317 on the winding needle base 301.

[0047] The up - down opening and closing angle between the upper winding needle piece 311 and the lower winding needle piece 319 is adjusted by the first adjusting screw 307, the second adjusting screw 309 and the third adjusting screw 317, and the left - right opening and closing of the upper winding needle piece 311 and the lower winding needle piece 319 is controlled by the upper balance spring 305 and the lower balance spring 314.

[0048] On the winding needle base 301, there is a positioning shaft pin 303. The positioning shaft pin 303 cooperates with the positioning shaft pin buckle 206 provided on the joint 02 to position the center position of the winding needle 03.

[0049] The positioning shaft pin buckle 206 is arranged on the inner wall of the inner lining sleeve. When the winding needle base 301 is inserted into the inner lining sleeve, both ends of the positioning shaft pin 303 on the winding needle base 301 are arranged in the positioning shaft pin buckle 206. The center position of the winding needle 03 is positioned through the cooperation of the positioning shaft pin 303 and the positioning shaft pin buckle 206. The center of the winding needle 03 and the joint 02 are on the same horizontal line.

[0050] The needle sleeve 04 includes a needle sleeve base 400, a first shaft sleeve 401, a second shaft sleeve 402, a steel needle 403, a first bearing 405 and a second bearing 406. The first bearing 405 and the second bearing 406 are installed at both ends of the needle sleeve 401 through bearing locking screws. The first shaft sleeve 401 is provided on the first bearing 405. The second shaft sleeve 402 is inserted into the first bearing 405 and fixed through a steel needle locking screw 407. The steel needle 403 is arranged in the second shaft sleeve 402.

[0051] As Figure 1 described, one end of the winding needle 03 is installed on the joint 02, and the other end is connected to the needle sleeve 04. The joint 02 and the needle sleeve 04 are installed on the device rack. The joint 02, the winding needle 03 and the needle sleeve 04 are on the same horizontal plane. When it is necessary to replace the winding needle 03, push the sliding sleeve on the joint 02 in the direction of the arrow marked in the figure for replacement.

[0052] The above are only the preferred embodiments of the present application. It should be noted that for those of ordinary skill in the art, without departing from the technical principle of the present application, several improvements and deformations can be made, and these improvements and deformations should also be regarded as the protection scope of the present application.

Claims

1. A lithium battery winding needle device, comprising a connector, a winding needle and a needle sleeve. The connector and the needle sleeve are installed on a device frame. A winding needle is provided between the connector and the needle sleeve. The connector, the winding needle and the needle sleeve are located on the same horizontal line, characterized in that, One end of the winding needle is detachably installed on the connector. The connector includes a sliding sleeve and a lining sleeve. The sliding sleeve is slidably connected to the lining sleeve. Steel balls are inlaid on the inner wall of the lining sleeve. The steel balls are close to the inner wall of the sliding sleeve. A card slot matching with the steel balls is provided on the winding needle. The winding needle is detachably installed in the lining sleeve through the cooperation of the steel balls and the card slot. A fixing ring for placing the steel balls is provided on the inner wall of the sliding sleeve. When the winding needle is disassembled, the steel balls fall into the fixing ring from the card slot, and the winding needle is separated from the lining sleeve.

2. The lithium battery winding needle device according to claim 1, characterized in that, One end of the lining sleeve is installed on the moving shaft. A connector spring is provided on the lining sleeve installed at one end of the moving shaft. The connector spring is located between the sliding sleeve and the lining sleeve. One end of the connector spring is limited by the moving shaft, and the other end is limited by a clamping seat on the sliding sleeve.

3. The lithium battery winding needle device according to claim 1, wherein, A bushing base is provided inside the lining sleeve, and the bushing base is used to limit the installation position of the winding needle in the lining sleeve.

4. The lithium battery winding needle device according to claim 1, characterized in that, The winding needle includes a winding needle base and winding needle pieces. The winding needle pieces are installed on the winding needle base. The winding needle pieces include an upper winding needle piece and a lower winding needle piece. Pin holes are provided on the upper winding needle piece and the lower winding needle piece. The upper winding needle piece and the lower winding needle piece are installed together through the pin holes and pins provided in the pin holes. An upper winding needle head is provided at one end of the upper winding needle piece away from the installation on the winding needle base. A lower winding needle head is provided at one end of the lower winding needle piece away from the installation on the winding needle base. The upper winding needle head and the lower winding needle head are arranged inside the needle sleeve. The winding needle base is two semi - circles divided into two parts. The two semi - circles are connected by fixing screw holes provided thereon and fixing screws in the fixing screw holes.

5. The lithium battery winding needle device according to claim 4, characterized in that, A winding needle spring is provided at one end of the winding needle base where the winding needle pieces are not installed. The card slot is provided at one end of the winding needle base close to the winding needle spring.

6. The lithium battery winding needle device according to claim 4, characterized in that, A pin locking screw for locking the pin is provided on the winding needle base. One end of the pin locking screw extends into the pin hole to lock the pin.

7. The lithium battery winding needle device according to claim 4, characterized in that, An upper balance spring is provided between the upper winding needle piece and the winding needle base. A lower balance spring is provided between the lower winding needle piece and the winding needle base.

8. The lithium battery winding needle device according to claim 4, characterized in that, First adjusting screws and second adjusting screws for adjusting the position of the upper winding needle piece, and first stop screws and second stop screws for limiting the position of the upper winding needle piece are provided on the winding needle base. Third adjusting screws for adjusting the position of the lower winding needle piece and third stop screws for limiting the position of the lower winding needle piece are also provided on the winding needle base.

9. The lithium battery winding needle device according to claim 4, wherein A positioning pin is provided on the winding needle base. The positioning pin is in snap - fit with a positioning pin buckle provided on the connector to position the center position of the winding needle.

10. The lithium battery winding needle device according to claim 1, wherein, The needle sleeve includes a needle sleeve base, a first shaft sleeve, a second shaft sleeve, a steel needle, a first bearing and a second bearing. The first bearing and the second bearing are respectively installed at both ends of the needle sleeve base through bearing locking screws. The first shaft sleeve is arranged inside the first bearing. The second shaft sleeve is provided with a steel needle, and the second shaft sleeve and the steel needle are installed inside the first shaft sleeve through a steel needle locking screw.

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