CN214957026U

CN214957026U - Square winding needle of lithium battery

Info

Publication number: CN214957026U
Application number: CN202121332019.8U
Authority: CN
Inventors: 殷浩铭
Original assignee: Dongguan Chaohong Hardware Precision Technology Co ltd
Current assignee: Dongguan Chaohong Hardware Precision Technology Co ltd
Priority date: 2021-06-16
Filing date: 2021-06-16
Publication date: 2021-11-30
Anticipated expiration: 2031-06-16

Abstract

The utility model discloses a square book needle of lithium cell, including rolling up the needle main part, install mounting structure in the book needle main part, mounting structure contains the connecting plate, both ends symmetry is provided with two installation pieces, two about the connecting plate a plurality of pulley structure is all installed to the inside of installation piece, install the fixed block structure in the book needle main part, the fixed block is provided with fixing device in the structure, fixing device contains the spliced pole, the upper and lower both ends symmetry of spliced pole is provided with two baffles, be provided with fixed spring on the spliced pole. The square winding needle of the lithium battery belongs to the field of lithium battery production equipment, and can reduce the friction force between a diaphragm and the winding needle by arranging a mounting structure and arranging a pulley structure on the mounting structure, thereby finally reducing the difficulty of extracting the winding needle from the middle of a winding core; by arranging the fixing block structure and the fixing device, the mounting and dismounting of the mounting structure can be facilitated.

Description

Square winding needle of lithium battery

Technical Field

The utility model relates to a lithium cell production facility field, in particular to needle is rolled up to lithium cell square.

Background

A lithium battery is a type of battery using a nonaqueous electrolyte solution, using lithium metal or a lithium alloy as a positive/negative electrode material. Lithium batteries can be broadly classified into two types: lithium metal batteries and lithium ion batteries. Lithium ion batteries do not contain lithium in the metallic state and are rechargeable. In the lithium battery manufacturing process, winding is taken as a key step in the preparation process of cylindrical batteries and square batteries, and has very important influence on the consistency, service life and safety performance of the batteries. In the winding process, the winding needle is gradually wound and extruded along with the gradual increase of the winding diameter, and the winding needle is drawn out from the middle of the winding core and faces larger resistance after winding is finished. Roll up the core and roll up the needle surface direct contact time because the slip frictional force that produces is too big for roll up the needle and extract the difficulty from rolling up the core centre, can take away a core inlayer diaphragm even, destroy the alignment degree that rolls up the core and cause to roll up the core and scrap.

SUMMERY OF THE UTILITY MODEL

The utility model discloses a main aim at provides the square book needle of lithium cell can effectively solve the problem in the background art.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

the square roll needle of lithium cell, including rolling up the needle main part, install mounting structure in rolling up the needle main part, mounting structure contains the connecting plate, both ends symmetry is provided with two installation pieces, two about the connecting plate a plurality of pulley structure is all installed to the inside of installation piece, roll up and install the fixed block structure in the needle main part, the fixed block is provided with fixing device in the structure, fixing device contains the spliced pole, the upper and lower both ends symmetry of spliced pole is provided with two baffles, be provided with fixed spring on the spliced pole.

Preferably, the tail end of book needle main part is provided with the connecting rod, the tail end of connecting rod is provided with the installation handle, set up the mounting groove No. one in the book needle main part, the upper end of book needle main part just is located the head end of book needle main part and has seted up the mounting groove No. two, the draw-in groove has been seted up to the lower extreme of book needle main part, the head end of book needle main part has seted up the dismantlement groove, the dismantlement groove is run through the head end and the draw-in groove of book needle main part.

Preferably, the last connecting plate of mounting structure installs in a mounting groove, two the installation piece is located the left and right sides of rolling up the needle main part respectively, two a No. three mounting grooves have all been seted up on the installation piece, two a plurality of shaft hole has all been seted up to the symmetry on the inner wall of both sides about No. three mounting grooves.

Preferably, a plurality of pulley structure's upper and lower both ends all are provided with two fixed axles symmetrically, pulley structure installs in No. three mounting grooves through the fixed axle that the symmetry set up on it.

Preferably, the fixing block structure is installed in a first installation groove and a second installation groove formed in the needle winding main body, the upper end of the fixing block structure is provided with a spring groove, the lower end of the fixing block structure is provided with a through hole, and the through hole penetrates the lower end of the fixing block structure and the spring groove.

Preferably, the fixed spring on the fixing device is located a spring groove formed in the upper end of the fixed block structure, the baffle on the upper side is located a spring groove formed in the upper end of the fixed block structure and located at the upper end of the fixed spring, the baffle on the lower side is located a clamping groove formed in the lower end of the winding needle body, and the connecting column penetrates through the through hole and the dismounting groove to connect the two baffles together.

Compared with the prior art, the utility model discloses following beneficial effect has:

the friction force between the diaphragm and the winding needle can be reduced by arranging the mounting structure and arranging the pulley structure on the mounting structure, so that the difficulty of pulling the winding needle out of the middle of the winding core is finally reduced; by arranging the fixing block structure and the fixing device, the mounting and dismounting of the mounting structure can be facilitated.

Drawings

Fig. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is a schematic view of a partial structure of the needle winding body of the present invention;

fig. 3 is a partial structural schematic view of the mounting structure of the present invention;

fig. 4 is a schematic structural view of the fixed block structure of the present invention;

fig. 5 is a schematic structural diagram of the fixing device of the present invention.

In the figure: 1. a needle winding body; 2. a mounting structure; 3. a pulley structure; 4. a fixed block structure; 5. a fixing device; 6. a connecting rod; 7. installing a handle; 8. a first mounting groove; 9. mounting grooves II; 10. a card slot; 11. disassembling the groove; 12. a connecting plate; 13. mounting blocks; 14. mounting groove III; 15. a shaft hole; 16. a fixed shaft; 17. a spring slot; 18. perforating; 19. connecting columns; 20. a baffle plate; 21. the spring is fixed.

Detailed Description

In order to make the technical means, creation features, achievement purposes and functions of the present invention easy to understand, the present invention is further described below with reference to the following embodiments.

As shown in fig. 1-5, the square winding needle of the lithium battery comprises a winding needle main body 1, wherein a mounting structure 2 is mounted on the winding needle main body 1, the mounting structure 2 comprises a connecting plate 12, two mounting blocks 13 are symmetrically arranged at the left end and the right end of the connecting plate 12, a plurality of pulley structures 3 are mounted inside the two mounting blocks 13, a fixed block structure 4 is mounted on the winding needle main body 1, a fixing device 5 is arranged on the fixed block structure 4, the fixing device 5 comprises a connecting column 19, two baffles 20 are symmetrically arranged at the upper end and the lower end of the connecting column 19, and a fixing spring 21 is arranged on the connecting column 19.

In this embodiment, the tail end of the winding needle main body 1 is provided with the connecting rod 6, the tail end of the connecting rod 6 is provided with the installation handle 7, the first mounting groove 8 has been seted up on the winding needle main body 1, the upper end of the winding needle main body 1 and the head end that is located the winding needle main body 1 have been seted up No. two mounting grooves 9, the draw-in groove 10 has been seted up to the lower extreme of the winding needle main body 1, the head end of the winding needle main body 1 has been seted up the dismounting groove 11, the dismounting groove 11 will be run through with the draw-in groove 10 the head end of the winding needle main body 1.

In this embodiment, in order to reduce the diaphragm and roll up the frictional force between the needle main part 1, thereby finally reduce the degree of difficulty that rolls up needle main part 1 and extract from rolling up the core in the middle of, detachable mounting structure 2 has been set up, connecting plate 12 on the mounting structure 2 is installed in mounting groove 8, two installation pieces 13 are located the left and right sides of rolling up needle main part 1 respectively, all seted up a No. three mounting groove 14 on two installation pieces 13, a plurality of shaft hole 15 has all been seted up to equal symmetry on the inner wall of both sides about two No. three mounting grooves 14.

In this embodiment, in order to reduce the friction between the diaphragm and the winding needle main body 1, thereby finally reducing the difficulty of extracting the winding needle main body 1 from the middle of the winding core, the pulley structures 3 are provided, two fixing shafts 16 are symmetrically provided at the upper and lower ends of the plurality of pulley structures 3, and the pulley structures 3 are mounted in the third mounting groove 14 through the fixing shafts 16 symmetrically provided thereon.

In this embodiment, in order to facilitate the installation and the dismantlement of mounting structure 2, fixed block structure 4 has been set up, and fixed block structure 4 is installed in a mounting groove 8 and No. two mounting grooves 9 of seting up on book needle main part 1, and spring groove 17 has been seted up to the upper end of fixed block structure 4, and perforation 18 has been seted up to the lower extreme of fixed block structure 4, and perforation 18 runs through the lower extreme of fixed block structure 4 and spring groove 17.

In this embodiment, in order to facilitate the installation and removal of the installation structure 2, the fixing device 5 is provided, the fixing spring 21 on the fixing device 5 is located in the spring groove 17 formed at the upper end of the fixing block structure 4, the baffle 20 at the upper side is located in the spring groove 17 formed at the upper end of the fixing block structure 4 and is located at the upper end of the fixing spring 21, the baffle 20 at the lower side is located in the clamping groove 10 formed at the lower end of the winding needle main body 1, and the connecting column 19 passes through the through hole 18 and the removal groove 11 to connect the two baffles 20 together.

It should be noted that, when the square winding needle for the lithium battery is used, firstly, the winding core is wound on the winding needle main body 1 and the mounting structure 2, and when the winding needle main body 1 needs to be drawn out from the winding core, the pulley structure 3 can rub the winding core, so that the pulley structure 3 can rotate, and the winding core and the winding needle main body 1 can be separated conveniently, quickly and safely; and when needs are dismantled mounting structure 2, at first dismantle fixed block structure 4 from book needle main part 1, during the dismantlement, promote fixing device 5 downwards earlier, thereby make baffle 20 of downside break away from the draw-in groove 10 that book needle main part 1 lower extreme was seted up, can together outwards stimulate fixed block structure 4 and fixing device 5 after that, finally make spliced pole 19 on the fixing device 5 pass dismantle the groove 11 can, can take connecting plate 12 on mounting structure 2 out from a mounting groove 8 at last, thereby finally accomplished mounting structure 2's dismantlement.

Although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described in the foregoing embodiments, or equivalents may be substituted for elements thereof. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. The square needle of rolling up of lithium cell, including rolling up needle main part (1), its characterized in that: install mounting structure (2) on book needle main part (1), mounting structure (2) contain connecting plate (12), both ends symmetry is provided with two installation piece (13), two about connecting plate (12) the inside of installation piece (13) all installs a plurality of pulley structure (3), install fixed block structure (4) on rolling up needle main part (1), be provided with fixing device (5) on fixed block structure (4), fixing device (5) contain spliced pole (19), the upper and lower both ends symmetry of spliced pole (19) is provided with two baffles (20), be provided with fixed spring (21) on spliced pole (19).

2. The square winding needle for lithium batteries according to claim 1, wherein: the tail end of rolling up needle main part (1) is provided with connecting rod (6), the tail end of connecting rod (6) is provided with installation handle (7), a mounting groove (8) has been seted up on rolling up needle main part (1), the upper end of rolling up needle main part (1) and the head end that is located rolling up needle main part (1) have been seted up No. two mounting grooves (9), draw-in groove (10) have been seted up to the lower extreme of rolling up needle main part (1), the head end of rolling up needle main part (1) has been seted up and has been dismantled groove (11), the head end and draw-in groove (10) of rolling up needle main part (1) are run through in dismantlement groove (11).

3. The square winding needle for lithium batteries according to claim 2, wherein: connecting plate (12) on mounting structure (2) are installed in mounting groove (8), two installation piece (13) are located the left and right sides of rolling up needle main part (1) respectively, two all seted up a No. three mounting groove (14) on installation piece (13), two a plurality of shaft hole (15) have all been seted up to the symmetry on the inner wall of both sides about No. three mounting groove (14).

4. The square winding needle for lithium batteries according to claim 3, wherein: the pulley structure is characterized in that two fixing shafts (16) are symmetrically arranged at the upper end and the lower end of the pulley structure (3), and the pulley structure (3) is arranged in a third mounting groove (14) through the fixing shafts (16) symmetrically arranged on the pulley structure.

5. The square winding needle for lithium batteries according to claim 4, wherein: the fixing block structure (4) is arranged in a first mounting groove (8) and a second mounting groove (9) which are formed in the needle winding main body (1), a spring groove (17) is formed in the upper end of the fixing block structure (4), a through hole (18) is formed in the lower end of the fixing block structure (4), and the lower end of the fixing block structure (4) is penetrated through the spring groove (17) by the through hole (18).

6. The square winding needle for lithium batteries according to claim 5, wherein: the fixing device is characterized in that a fixing spring (21) on the fixing device (5) is positioned in a spring groove (17) formed in the upper end of a fixing block structure (4), the baffle (20) on the upper side is positioned in the spring groove (17) formed in the upper end of the fixing block structure (4) and positioned at the upper end of the fixing spring (21), the baffle (20) on the lower side is positioned in a clamping groove (10) formed in the lower end of a winding needle main body (1), and the connecting column (19) penetrates through a through hole (18) and a dismounting groove (11) to connect the two baffles (20) together.