Pre-pressing fastening device for polymer cell production

Abstract

The utility model relates to the field of battery cell processing, in particular to a prepressing fastening device for polymer battery cell production, which comprises a base and two side plates arranged at the top of the base, and two driving plates are further arranged on the base. The battery pack further comprises two fastening assemblies, and the fastening assemblies are arranged on the outer side of the driving plate and used for evenly transmitting pressure on the driving plate to the battery cell. Wherein the fastening assembly comprises a pressing plate and a set of butt joint columns, the set of butt joint columns are evenly distributed between the pressing plate and the driving plate, one end of each butt joint column is installed on one side of the driving plate, and a conical base is installed at the other end of each butt joint column; in the process of applying pressure to the battery cell, pressure applying point positions can be increased, the pressure transmission range can be expanded, the phenomenon of uneven pressure can be reduced, and meanwhile, whether the pressure applying plate is deformed or not can be timely detected and timely remedied.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of electric core processing, especially a pre-pressing fastening device for polymer electric core production. BACKGROUND

[0002] The polymer electric core is also a component of the lithium ion battery, and the composition of the lithium ion secondary charging battery is as follows: electric core + protection circuit board, in order to solve the problem of excessive expansion space of the electric core, the common method is to extrude the electric core module before being placed in the protection shell, so as to eliminate the excessive expansion space, and then placed in the protection shell.

[0003] Through the search, the Chinese patent "polymer electric core pre-pressing fastening device" authorized announcement number "CN219040545U", including base, electric core seat, side pressure plate, bottom pressure plate, top pressure plate, control box, one or more electric cores are placed in the electric core seat, the fast pressure clamp drives the side pressure plate to press on the side of the electric core, and then the control box controls the output end of the servo motor to drive the top pressure plate to pressurize the electric core, so that the electric core is compressed and is in a good thickness range, but the above-mentioned mode has the following defects in the actual use process: it adopts the servo motor drive, drives the top pressure plate to extrude and fasten the electric core, but in the process of pressing, the pressing force of the top pressure plate radiates from the center to the outside, so that in the process of extruding the electric core, the phenomenon of uneven pressure distribution exists, which affects the fastening effect, and at the same time, if the top pressure plate is deformed due to extrusion operation and contact wear, the user cannot easily detect and timely remedy.

[0004] Therefore, a pre-pressing fastening device for polymer electric core production is proposed to solve the above problems. INVENTION CONTENTS

[0005] The utility model aims at providing a pre-pressing fastening device for polymer electric core production to solve the above problems, and improving the problem of uneven pressure distribution when fastening the electric core, and the phenomenon of deformation of the pressing plate is not easy to detect and remedy.

[0006] The utility model realizes the above-mentioned purpose through the following technical scheme, a pre-pressing fastening device for polymer electric core production, including base and two side plates arranged on the top thereof, two drive plates are further arranged on the base, further including a fastening assembly, the number of the fastening assembly is two, the fastening assembly is arranged on the outer side of the drive plate and is used for uniformly transmitting the pressure on the drive plate to the electric core, wherein the fastening assembly includes a pressing plate and a group of butt joints, a group of butt joints are uniformly distributed between the pressing plate and the drive plate, one end of the butt joint is installed to one side of the drive plate, and the other end of the butt joint is provided with a conical seat.

[0007] Preferably, a set of crossbars passing through the drive plate is provided on one side of the pressure plate, and the outer side of the crossbars is coated with scale values.

[0008] Preferably, the outer side of the crossbar is threaded with a threaded ring, and one side of the threaded ring contacts one side of the drive plate.

[0009] Preferably, a rubber pad is provided between the conical seat and the pressure plate, and a limiting ring that contacts the outer side of the conical seat is fixedly sleeved on the outside of the rubber pad.

[0010] Preferably, the drive plate has an upright plate fixedly mounted on the base on its outer side, and a first electric push rod is installed inside the upright plate, with one end of the first electric push rod installed on the outer side of the drive plate.

[0011] Preferably, the outer side of the side plate is slidably connected to two second electric push rods via a hinge seat, and one end of the second electric push rod is mounted to the base via the hinge seat.

[0012] Preferably, the top of the base is provided with a cell holder for placing the battery cells.

[0013] The beneficial effects of this utility model are:

[0014] 1. By setting a conical seat and a rubber pad, the pressure area of ​​the pressure plate can be increased, reducing stress concentration. The use of multi-point docking columns increases the number of pressure points, making the pressure distribution more uniform. The rubber pad can deform under pressure, and the limiting ring limits the deformation of the rubber pad, thereby improving the pressure transmission range and ensuring better pressure distribution.

[0015] 2. By setting a crossbar, users can observe the scale value on the crossbar. If the scale value deviates, it indicates that the pressure plate has deformed during the cell processing. If emergency repair is needed, users can rotate the threaded ring at the corresponding position according to the deformation, so that it drives the crossbar to pull and resist the pressure plate, reduce the deformation amplitude, and complete the timely repair. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of this utility model;

[0017] Figure 2 This is a schematic diagram of the structure of the pressure plate and drive plate of this utility model;

[0018] Figure 3 for Figure 1 Enlarged view of A in the middle;

[0019] Figure 4 This is an exploded view of the conical seat and rubber pad of this utility model.

[0020] In the diagram: 100, base; 110, upright plate; 111, first electric push rod; 200, side plate; 210, second electric push rod; 300, drive plate; 400, fastening assembly; 410, pressure plate; 411, crossbar; 412, threaded ring; 420, connecting post; 421, tapered seat; 422, rubber pad; 423, limiting ring. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] In practical implementation: such as Figures 1-4 As shown, a pre-compression fastening device for polymer battery cell production includes a base 100 and two side plates 200 disposed on its top. Two drive plates 300 are also disposed on the base 100. It also includes fastening components 400, with two fastening components 400 disposed on the outside of the drive plates 300 and used to uniformly transmit the pressure on the drive plates 300 to the battery cell. The fastening components 400 include a pressure plate 410 and a set of docking posts 420. The set of docking posts 420 are evenly distributed between the pressure plate 410 and the drive plates 300. One end of the docking post 420 is installed on one side of the drive plate 300, and the other end of the docking post 420 is installed with a conical seat 421.

[0023] like Figure 2 and Figure 3 As shown, a set of crossbars 411 passing through the drive plate 300 is provided on one side of the pressure plate 410, and the outer side of the crossbars 411 is coated with scale values.

[0024] When performing pre-compression and fastening operations on the battery cell, the battery cell can be placed on the base 100, and then the side plate 200 is used to limit its two sides. Next, the drive plate 300 drives the pressure plate 410 to limit the remaining two sides of the battery cell. At this time, the user can observe the placement of the battery cell. If there are no abnormalities, the drive plate 300 drives the pressure plate 410 to continue moving to fasten the battery cell. During the movement, the pressure applied by the drive plate 300 will be introduced along the docking post 420 to the conical seat 421, and then transmitted to the pressure plate 410. The pressure plate 410 is used to complete the pre-compression and fastening of the battery cell. In this process, the setting of multiple docking posts 420 can make the pressure distribution more uniform. Combined with the setting of the conical seat 421, the pressure area of ​​the pressure plate 410 can be increased, reducing stress concentration and ensuring better pressure distribution.

[0025] After each pre-pressing and tightening process of the battery cell is completed, the user can observe the scale value on the crossbar 411. If the scale value deviates, it indicates that the pressure plate 410 has deformed during the battery cell processing.

[0026] like Figure 3 As shown, a threaded ring 412 is threaded on the outer side of the crossbar 411, and one side of the threaded ring 412 contacts one side of the drive plate 300.

[0027] When the pressure plate 410 deforms and emergency repairs are needed, the user can rotate the threaded ring 412 at the corresponding position according to the deformation condition, so that the drive bar 411 can pull and resist the pressure plate 410 to reduce the deformation range. After the processing is completed, the user can stop the machine to maintain or replace the pressure plate 410.

[0028] like Figure 2 , Figure 3 and Figure 4 As shown, a rubber pad 422 is provided between the conical seat 421 and the pressure plate 410, and a limiting ring 423 that contacts the outer side of the conical seat 421 is fixedly sleeved on the outside.

[0029] The use of rubber pad 422 can, on the one hand, reduce rigid collisions during the pre-compression and tightening process and extend the service life of the equipment. On the other hand, it can deform itself after being compressed, and the limiting ring 423 limits the deformation of the rubber pad 422, thereby increasing the pressure transmission area and making the pressure application effect more uniform.

[0030] like Figure 1 As shown, a vertical plate 110 is fixedly installed on the base 100 on the outer side of the drive plate 300, and a first electric push rod 111 is installed inside the vertical plate 110. One end of the first electric push rod 111 is installed on the outer side of the drive plate 300.

[0031] The first electric push rod 111 is supported by the upright plate 110. When the first electric push rod 111 is started, pressure is applied to the drive plate 300, which drives the drive plate 300 to move.

[0032] like Figure 1 As shown, two second electric push rods 210 are slidably connected to the outer side of the side plate 200 via a hinge seat, and one end of the second electric push rod 210 is mounted to the base 100 via the hinge seat.

[0033] After the battery cell is placed on the base 100, the user can activate the second electric push rod 210 to drive the side plate 200 and limit its side movement.

[0034] like Figure 1 As shown, a cell holder for placing battery cells is provided on the top of the base 100.

[0035] The use of a cell holder design facilitates more efficient cell placement.

[0036] Working Principle: During the pre-compression and fastening operation of the battery cell, the battery cell can be placed on the base 100. Then, the side plates 200 are used to limit its two sides. Next, the drive plate 300 drives the pressure plate 410 to limit the remaining two sides of the battery cell. At this time, the user can observe the placement of the battery cell. If there are no abnormalities, the first electric push rod 111 is activated to apply pressure to the drive plate 300. The drive plate 300 drives the pressure plate 410 to continue moving, fastening the battery cell. During the movement, the pressure applied by the drive plate 300 is introduced along the docking post 420 to the conical seat 421, and then transmitted to the pressure plate 410. The pressure plate 410 completes the pre-compression and fastening of the battery cell. In this process, the multi-point docking post 420 can make the pressure distribution more uniform. Combined with the conical seat 421, the pressure area of ​​the pressure plate 410 can be increased, reducing stress concentration. The rubber pad 422 is used to further enhance the pressure distribution. This device can mitigate rigid collisions during the pre-pressing and tightening process, extending the equipment's service life. Furthermore, it deforms under pressure, and the limiting ring 423 limits the deformed rubber pad 422, thereby increasing the pressure transmission area and ensuring better pressure distribution. After each pre-pressing and tightening of the battery cell, the user can observe the scale value on the crossbar 411. If the scale value deviates, it indicates that the pressure plate 410 has deformed during the battery cell processing. In case of emergency repair, the user can rotate the threaded ring 412 at the corresponding position according to the deformation, causing it to drive the crossbar 411 to pull and resist the pressure plate 410, reducing the deformation amplitude. After processing is completed, the user can stop the machine to maintain and replace the pressure plate 410. The entire device can increase the pressure points and expand the pressure transmission range during the pressure application process, reducing uneven pressure. It can also promptly detect and repair any deformation of the pressure plate 410.

[0037] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A pre-pressing fastening device for polymer cell production, characterized by, Include: The base (100) is provided with two side plates (200) on the top, and two driving plates (300) are also provided on the base (100); It also includes a fastening assembly (400), the number of the fastening assembly (400) is two, the fastening assembly (400) is provided on the outside of the driving plate (300) and is used for uniformly transmitting the pressure on the driving plate (300) to the battery cell; Wherein, the fastening assembly (400) includes a pressing plate (410) and a group of butt joint columns (420), a group of butt joint columns (420) are uniformly distributed between the pressing plate (410) and the driving plate (300), one end of the butt joint column (420) is installed to one side of the driving plate (300), and the other end of the butt joint column (420) is installed with a conical seat (421).

2. The pre-pressing fastening device for polymer cell production according to claim 1, characterized in that: One side of the pressing plate (410) is provided with a group of cross bars (411) penetrating the driving plate (300), and the outside of the cross bar (411) is sprayed with a scale value.

3. The pre-pressing fastening device for polymer cell production according to claim 2, characterized in that: The outside of the cross bar (411) is threadedly provided with a threaded ring (412), one side of the threaded ring (412) is in contact with one side of the driving plate (300).

4. The pre-pressing fastening device for polymer cell production according to claim 1, characterized in that: The conical seat (421) and the pressing plate (410) are provided with a rubber pad (422), and the outside of the conical seat (421) is fixedly provided with a limiting ring (423) in contact with the outside of the rubber pad (422).

5. The pre-pressing fastening device for polymer cell production according to claim 1, characterized in that: The outside of the driving plate (300) is provided with a vertical plate (110) fixedly installed on the base (100), the inside of the vertical plate (110) is installed with a first electric push rod (111), one end of the first electric push rod (111) is installed to the outside of the driving plate (300).

6. The pre-pressing fastening device for polymer cell production according to claim 1, characterized in that: The outside of the side plate (200) is slidably connected with two second electric push rods (210) through a hinged seat, one end of the second electric push rod (210) is installed on the base (100) through the hinged seat.

7. The pre-pressing fastening device for polymer cell production according to claim 1, characterized in that: The top of the base (100) is provided with a battery cell seat for placing a battery cell.

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