Hot pressing device for lithium battery manufacturing

Abstract

The invention discloses a hot-pressing device for lithium battery manufacturing, and relates to the technical field of lithium battery manufacturing, the hot-pressing device comprises a workbench and a hot-pressing assembly, the bottom of the workbench is provided with supporting column legs, and the upper end of the workbench is provided with the hot-pressing assembly; the hot pressing assembly comprises a mounting frame, a hydraulic cylinder, a mounting frame, limiting barrels, limiting rods, reset springs, a pressing plate, limiting through holes and a heating block, the hydraulic cylinder is arranged at the middle end in the mounting frame, the mounting frame is mounted at the front end of the hydraulic cylinder, the limiting barrels are additionally arranged on the two sides of the exterior of the mounting frame, and meanwhile the limiting rods are connected into the limiting barrels; a reset spring is arranged in the limiting cylinder outside the limiting rod, a pressing plate is arranged in the mounting frame, a limiting through hole is formed in the pressing plate, and a heating block is arranged at the lower end of the pressing plate. The hot-pressing device for lithium battery manufacturing can adapt to lithium batteries of different specifications for hot-pressing structure replacement, and the flexibility and motility of the hot-pressing device in the using process are improved.

Description

Technical Field

[0001] The present invention relates to the technical field of lithium battery manufacturing, and specifically to a hot pressing device for lithium battery manufacturing. Background Technique

[0002] A lithium battery is a type of battery with lithium metal or lithium alloy as the positive / negative electrode material and using a non-aqueous electrolyte solution. According to different chemical compositions and usage methods, lithium batteries are mainly divided into two categories: lithium metal batteries and lithium-ion batteries. The working principle of a lithium battery is based on the movement of lithium ions. During charging, lithium ions are removed from the positive electrode material and embedded in the negative electrode through the electrolyte. During discharging, lithium ions return from the negative electrode to the positive electrode. This charging and discharging process enables lithium-ion batteries to be reused. Lithium battery manufacturing refers to assembling various materials and components into a complete lithium battery through a series of complex technological processes. Hot pressing in lithium battery manufacturing refers to a compaction process carried out at high temperatures. The specific process of hot pressing is to compact the positive electrode, negative electrode, and separator system of a lithium battery in a high-temperature environment, usually between 100°C and 200°C. In a high-temperature state, these components become soft, the polarization film bonds more tightly, and the physical properties are improved, thereby increasing the conductivity and mechanical properties. However, the existing hot pressing devices still have the following deficiencies:

[0003] When the existing hot pressing devices are in use, since most hot pressing devices are not convenient for adapting to different specifications of lithium batteries for hot pressing operations, and different specifications of lithium batteries require different hot presses, the use of hot pressing devices has certain limitations, resulting in a decrease in the practicality and use efficiency of hot pressing devices.

[0004] Therefore, in view of this, research and improvement are carried out on the existing structure and deficiencies, and a hot pressing device for lithium battery manufacturing is proposed. Summary of the Invention

[0005] The purpose of the present invention is to provide a hot pressing device for lithium battery manufacturing to solve the problems raised in the above background technique.

[0006] To achieve the above purpose, the present invention provides the following technical solution: A hot pressing device for lithium battery manufacturing, including a workbench and a hot pressing component. Support columns are installed at the bottom of the workbench. A hot pressing component is arranged at the upper end of the workbench. The hot pressing component includes an installation frame, a hydraulic cylinder, an installation frame, a limiting cylinder, a limiting rod, a return spring, a pressing plate, a limiting through hole, and a heating block. A hydraulic cylinder is arranged in the middle of the interior of the installation frame. An installation frame is installed at the front end of the hydraulic cylinder. Limiting cylinders are additionally arranged on both sides of the outside of the installation frame. A limiting rod is connected inside the limiting cylinder. A return spring is arranged on the outside of the limiting rod inside the limiting cylinder. A pressing plate is arranged inside the installation frame. A limiting through hole is opened inside the pressing plate. A heating block is arranged at the lower end of the pressing plate. Limiting components are arranged on both sides inside the workbench.

[0007] Furthermore, the hydraulic cylinder and the mounting frame are vertically distributed, and the hydraulic cylinder and the mounting frame are fixedly connected by bolts.

[0008] Furthermore, the limiting rod and the limiting cylinder are embeddedly connected, and the limiting rod is elastically connected to the limiting cylinder through a return spring.

[0009] Furthermore, the outer dimension of the limiting rod is adapted to the inner dimension of the limiting through-hole, and the limiting rod is connected to the pressing plate through the limiting through-hole.

[0010] Furthermore, the limiting assembly includes a limiting frame, a servo motor, a lead screw, and a movable slider. A servo motor is arranged at the left end of the outer part of the limiting frame, a lead screw is connected to the front end of the servo motor, and a movable slider is connected to the outer part of the lead screw.

[0011] Furthermore, the limiting assembly further includes a mounting vertical rod, a clamping plate, and an anti-slip rubber pad. A mounting vertical rod is installed in the middle of the upper end of the movable slider. A clamping plate is arranged inside the mounting vertical rod, and an anti-slip rubber pad is additionally arranged inside the clamping plate.

[0012] Furthermore, the outer dimension of the movable slider is adapted to the inner dimension of the limiting frame, and the movable slider is slidably connected to the limiting frame through the lead screw.

[0013] Furthermore, the number of the clamping plates is two, and the two clamping plates are symmetrically arranged on both sides of the upper end of the workbench with respect to the front central axis of the workbench.

[0014] Furthermore, the operation method is as follows: The stability during the use of the equipment is improved by the support column legs installed at the bottom of the workbench. The limiting frame is fixedly installed on both sides inside the workbench through fastening bolts. The servo motor on the left end of the outer part of the limiting frame operates to drive the lead screw to rotate, so that the movable slider connected to the outer part of the lead screw moves left and right inside the limiting frame accordingly, thereby driving the mounting vertical rod installed at the upper end of the movable slider to move to the use position. The clamping plate is fixedly installed inside the mounting vertical rod, and the movement of the mounting vertical rod drives the clamping plate to displace, so as to limit and clamp the lithium battery, and the anti-slip rubber pad additionally arranged inside the clamping plate is used to increase the stability during the clamping of the lithium battery. Then, the hydraulic cylinder operates to drive the mounting frame to move in position. The limiting cylinder is fixedly installed on both sides of the outer part of the mounting frame. The return spring is used to elastically connect the limiting rod and the limiting cylinder. The pressing plate is installed inside the mounting frame, and the pressing plate is limited and installed inside the mounting frame through the cooperation of the limiting through-hole and the limiting rod, so that the pressing plates of different sizes can be quickly replaced and installed, and then different specifications of lithium batteries can be adapted for hot pressing operations. The heating block is fixedly installed at the lower end of the pressing plate, and the lithium battery is hot-pressed by the heating block.

[0015] The present invention provides a hot pressing device for manufacturing lithium batteries, which has the following beneficial effects:

[0016] 1. Through the setting of the hot pressing assembly, when the hot pressing device for lithium battery manufacturing is in use, the hydraulic cylinder operates to drive the installation frame to move in position. The limiting cylinders are fixedly installed on both outer sides of the installation frame. The reset springs are used to elastically connect the limiting rods with the limiting cylinders. The pressing plate is installed inside the installation frame. The pressing plate is limited and installed inside the installation frame through the limiting through holes and the limiting rods, so that the pressing plates of different sizes can be quickly replaced and installed, and then different specifications of lithium batteries can be adapted for hot pressing operations. The heating blocks are fixedly installed at the lower end of the pressing plate, and the heating blocks are used to perform hot pressing operations on the lithium batteries, improving the overall practicability and use efficiency of the hot pressing device.

[0017] 2. Through the setting of the limiting assembly, when the hot pressing device for lithium battery manufacturing is in use, the servo motor operates to drive the lead screw to rotate, so that the movable slider connected to the outside of the lead screw moves left and right inside the limiting frame, thereby driving the installation vertical rod installed at the upper end of the movable slider to move to the use position. The clamping plates are fixedly installed on the inner sides of the installation vertical rods. The movement of the installation vertical rods drives the clamping plates to displace, so as to limit and clamp the lithium batteries, and the anti-slip rubber pads added on the inner sides of the clamping plates are used to increase the stability during the clamping process of the lithium batteries, improving the overall practicability and use efficiency of the hot pressing device. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 is a three-dimensional structural schematic diagram of a hot pressing device for lithium battery manufacturing according to the present invention;

[0019] Figure 2 is a three-dimensional bottom-up structural schematic diagram of the installation frame of a hot pressing device for lithium battery manufacturing according to the present invention;

[0020] Figure 3 is a three-dimensional unfolded structural schematic diagram of the pressing plate of a hot pressing device for lithium battery manufacturing according to the present invention;

[0021] Figure 4 is a hot pressing device for lithium battery manufacturing according to the present invention Figure 3 magnified structural schematic diagram at A in;

[0022] Figure 5 is a three-dimensional sectional structural schematic diagram of the limiting assembly of a hot pressing device for lithium battery manufacturing according to the present invention.

[0023] In the figure: 1, workbench; 2, support column legs; 3, hot pressing assembly; 301, mounting bracket; 302, hydraulic cylinder; 303, mounting frame; 304, limiting cylinder; 305, limiting rod; 306, return spring; 307, pressing plate; 308, limiting through hole; 309, heating block; 4, limiting assembly; 401, limiting frame; 402, servo motor; 403, lead screw; 404, movable slider; 405, mounting vertical rod; 406, clamping plate; 407, anti-slip rubber pad. Specific implementation manners

[0024] The following further describes in detail the implementation manners of the present invention in conjunction with the accompanying drawings and embodiments. The following embodiments are used to illustrate the present invention, but cannot be used to limit the scope of the present invention.

[0025] Such as Figure 1 , Figure 2 , Figure 3 and Figure 4As shown in the figure, a hot pressing device for lithium battery manufacturing includes a workbench 1 and a hot pressing assembly 3. Support columns 2 are installed at the bottom of the workbench 1. A hot pressing assembly 3 is arranged at the upper end of the workbench 1. The hot pressing assembly 3 includes a mounting frame 301, a hydraulic cylinder 302, a mounting frame 303, a limiting cylinder 304, a limiting rod 305, a return spring 306, a pressing plate 307, a limiting through hole 308, and a heating block 309. A hydraulic cylinder 302 is arranged in the middle of the inner part of the mounting frame 301. The front end of the hydraulic cylinder 302 is installed with a mounting frame 303. Limiting cylinders 304 are additionally arranged on both sides of the outside of the mounting frame 303. At the same time, a limiting rod 305 is connected inside the limiting cylinder 304. A return spring 306 is arranged in the limiting cylinder 304 outside the limiting rod 305. A pressing plate 307 is arranged inside the mounting frame 303. A limiting through hole 308 is opened inside the pressing plate 307. A heating block 309 is arranged at the lower end of the pressing plate 307. The hydraulic cylinder 302 and the mounting frame 303 are vertically distributed, and the hydraulic cylinder 302 and the mounting frame 303 are fixedly connected by bolts. The limiting rod 305 and the limiting cylinder 304 are in an embedded connection, and the limiting rod 305 is elastically connected to the limiting cylinder 304 through the return spring 306. The outer dimension of the limiting rod 305 is adapted to the inner dimension of the limiting through hole 308, and the limiting rod 305 is connected to the pressing plate 307 through the limiting through hole 308. The mounting frame 301 is fixedly installed in the middle of the upper end of the workbench 1 through fastening bolts, and the hydraulic cylinder 302 is fixedly installed in the middle of the inner part of the mounting frame 301 by cooperating with the fastening bolts. The operation of the hydraulic cylinder 302 drives the mounting frame 303 to move in position. The limiting cylinders 304 are fixedly installed on both sides of the outside of the mounting frame 303. At the same time, the limiting rod 305 is installed inside the limiting cylinder 304. The return spring 306 is used to make the limiting rod 305 and the limiting cylinder 304 elastically connected. The pressing plate 307 is installed inside the mounting frame 303. The inner dimension of the limiting through holes 308 opened on both sides inside the pressing plate 307 is adapted to the outer dimension of the limiting rod 305. Thus, the pressing plate 307 is limited and installed inside the mounting frame 303 through the cooperation of the limiting through hole 308 and the limiting rod 305, and then the pressing plate 307 of different sizes can be quickly replaced and installed to adapt to the hot pressing operation of lithium batteries of different specifications. The heating block 309 is fixedly installed at the lower end of the pressing plate 307, and the heating block 309 is used to perform hot pressing operation on the lithium battery, improving the overall practicability and use efficiency of the hot pressing device.

[0026] As Figure 1 and Figure 5As shown in the figure, limiting components 4 are arranged on both sides inside the workbench 1. The limiting components 4 include a limiting frame 401, a servo motor 402, a lead screw 403, and a movable slider 404. The servo motor 402 is arranged at the left end outside the limiting frame 401, and the front end of the servo motor 402 is connected to the lead screw 403. The movable slider 404 is connected to the outside of the lead screw 403. The limiting components 4 further include an installation vertical rod 405, a clamping plate 406, and an anti-slip rubber pad 407. At the same time, the installation vertical rod 405 is installed in the middle of the upper end of the movable slider 404. The clamping plate 406 is arranged inside the installation vertical rod 405, and the anti-slip rubber pad 407 is additionally arranged inside the clamping plate 406. The external dimension of the movable slider 404 is adapted to the internal dimension of the limiting frame 401, and the movable slider 404 is slidably connected to the limiting frame 401 through the lead screw 403. The number of the clamping plates 406 is two, and the two clamping plates 406 are symmetrically arranged on both sides of the upper end of the workbench 1 with the front central axis of the workbench 1 as the symmetry axis. The limiting frame 401 is fixedly installed on both sides inside the workbench 1 through fastening bolts, and the servo motor 402 is fixedly installed on the left end outside the limiting frame 401 in cooperation with the fastening bolts. The output shaft of the servo motor 402 is connected to the lead screw 403 through a coupling. The operation of the servo motor 402 drives the lead screw 403 to rotate, so that the movable slider 404 connected to the outside of the lead screw 403 moves left and right inside the limiting frame 401, thereby driving the installation vertical rod 405 installed at the upper end of the movable slider 404 to move to the use position. The clamping plate 406 is fixedly installed inside the installation vertical rod 405, and the movement of the installation vertical rod 405 drives the clamping plate 406 to displace, so as to limit and clamp the lithium battery, and the anti-slip rubber pad 407 additionally arranged inside the clamping plate 406 is used to increase the stability during the clamping process of the lithium battery, improving the overall practicability and use efficiency of the hot pressing device.

[0027] In summary, for the hot pressing device used in the manufacture of lithium batteries, during use, first, the support column legs 2 installed at the bottom of the workbench 1 improve the stability of the device during use. The limit frame 401 is fixedly installed on both sides inside the workbench 1 through fastening bolts. The servo motor 402 at the left end outside the limit frame 401 operates to drive the lead screw 403 to rotate, so that the movable slider 404 connected to the outside of the lead screw 403 moves left and right inside the limit frame 401 accordingly, thereby driving the installation vertical rod 405 installed at the upper end of the movable slider 404 to move to the use position. The clamping plate 406 is fixedly installed on the inner side of the installation vertical rod 405. The movement of the installation vertical rod 405 drives the clamping plate 406 to displace, thereby limiting and clamping the lithium battery, and cooperating with the anti-slip rubber pad 407 added on the inner side of the clamping plate 406 to increase the stability during the clamping of the lithium battery. Then, the hydraulic cylinder 302 operates to drive the installation frame 303 to move in position. The limit cylinder 304 is fixedly installed on both sides outside the installation frame 303. The limit rod 305 is elastically connected to the limit cylinder 304 by using the return spring 306. The pressure plate 307 is installed inside the installation frame 303. The pressure plate 307 is limited and installed inside the installation frame 303 through the limit through hole 308 in cooperation with the limit rod 305, so that the pressure plate 307 of different sizes can be quickly replaced and installed, and then adapted to different specifications of lithium batteries for hot pressing operations. The heating block 309 is fixedly installed at the lower end of the pressure plate 307, and the lithium battery is hot pressed by using the heating block 309, improving the overall practicability and use efficiency of the hot pressing device.

[0028] The embodiments of the present invention are given for purposes of illustration and description, and are not exhaustive or limit the invention to the disclosed form. Many modifications and variations are obvious to those of ordinary skill in the art. The embodiments are chosen and described in order to better illustrate the principles of the invention and its practical application, and to enable those of ordinary skill in the art to understand the invention and design various embodiments with various modifications suitable for a particular purpose.

Claims

1. A hot pressing device for manufacturing lithium batteries, comprising a workbench (1) and a hot pressing assembly (3), characterized in that: The workbench (1) is provided with a support column leg (2) at the bottom, and a hot pressing assembly (3) is provided at the upper end of the workbench (1), and the hot pressing assembly (3) comprises a mounting frame (301), a hydraulic cylinder (302), a mounting frame (303), a limiting cylinder (304), a limiting rod (305), a return spring (306), a pressure plate (307), a limiting through hole (308) and a heating block (309), a hydraulic cylinder (302) is provided at the middle end of the mounting frame (301), and a mounting frame (303) is provided at the front end of the hydraulic cylinder (302). 03), and limiting cylinders (304) are additionally provided on both sides of the outside of the installation frame (303), and a limiting rod (305) is connected to the inside of the limiting cylinder (304), and a return spring (306) is arranged in the limiting cylinder (304) outside the limiting rod (305), a pressing plate (307) is arranged inside the installation frame (303), and a limiting through hole (308) is opened inside the pressing plate (307), and a heating block (309) is arranged at the lower end of the pressing plate (307), and limiting components (4) are arranged on both sides of the inside of the workbench (1).

2. A hot pressing device for lithium battery manufacturing according to claim 1, characterized in that: The hydraulic cylinder (302) and the mounting frame (303) are distributed vertically, and the hydraulic cylinder (302) and the mounting frame (303) are fixedly connected by bolts.

3. A hot pressing device for lithium battery manufacturing according to claim 2, characterized in that: The limiting rod (305) is embeddedly connected to the limiting cylinder (304), and the limiting rod (305) is elastically connected to the limiting cylinder (304) via a return spring (306).

4. A hot pressing device for lithium battery manufacturing according to claim 3, characterized in that: The outer dimensions of the limiting rod (305) are matched to the inner dimensions of the limiting through hole (308), and the limiting rod (305) is connected to the pressing plate (307) via the limiting through hole (308).

5. A hot pressing device for lithium battery manufacturing according to claim 4, characterized in that: The limiting assembly (4) comprises a limiting frame (401), a servo motor (402), a screw rod (403) and a movable slider (404); the servo motor (402) is arranged at the left end of the outside of the limiting frame (401); the front end of the servo motor (402) is connected to the screw rod (403); and the outside of the screw rod (403) is connected to the movable slider (404).

6. A hot pressing device for lithium battery manufacturing according to claim 5, characterized in that: The limiting assembly (4) further comprises a mounting vertical rod (405), a clamping plate (406) and an anti-skid rubber pad (407); the mounting vertical rod (405) is mounted at the middle of the upper end of the movable slider (404); the clamping plate (406) is arranged on the inner side of the mounting vertical rod (405), and the anti-skid rubber pad (407) is additionally arranged on the inner side of the clamping plate (406).

7. A hot pressing device for lithium battery manufacturing according to claim 6, characterized in that: The outer dimensions of the movable slider (404) are matched to the inner dimensions of the limiting frame (401), and the movable slider (404) is slidably connected to the limiting frame (401) via a screw rod (403).

8. A hot pressing device for lithium battery manufacturing according to claim 7, characterized in that: The number of the clamping plates (406) is two, and the two clamping plates (406) are symmetrically arranged on both sides of the upper end of the workbench (1) with respect to the front center axis of the workbench (1).

9. A hot pressing device for lithium battery manufacturing according to claim 8, characterized in that: The operation method is as follows: the stability of the device during use is improved by installing a support column leg (2) at the bottom of the workbench (1), and the limit frame (401) is fixedly installed on both sides of the workbench (1) by tightening bolts. The servo motor (402) at the left end of the limit frame (401) drives the screw rod (403) to rotate, so that the movable slider (404) connected to the outside of the screw rod (403) moves left and right inside the limit frame (401), thereby driving the installation vertical rod (405) installed on the upper end of the movable slider (404) to move to the use position, and the clamping plate (406) is fixedly installed on the inner side of the installation vertical rod (405). The movement of the installation vertical rod (405) drives the clamping plate (406) to move, thereby limiting and clamping the lithium battery, and cooperating with the anti-skid rubber pad added on the inner side of the clamping plate (406). (407) Increase the stability of the lithium battery during clamping. Then, the hydraulic cylinder (302) is used to drive the installation frame (303) to move its position. The limiting cylinder (304) is fixedly installed on both sides of the outside of the installation frame (303). The return spring (306) is used to elastically connect the limiting rod (305) and the limiting cylinder (304). The pressure plate (307) is installed inside the installation frame (303). The limiting through hole (308) cooperates with the limiting rod (305) to limit the pressure plate (307) inside the installation frame (303). In this way, pressure plates (307) of different sizes can be quickly replaced and installed, and lithium batteries of different specifications can be adapted for hot pressing. The heating block (309) is fixedly installed at the lower end of the pressure plate (307), and the heating block (309) is used to perform hot pressing on the lithium battery.

Images