Formation shaping jig
By introducing a formation and shaping fixture into the automated forming machine, the problem of separating formation and capacity testing in lithium-ion battery manufacturing has been solved, enabling efficient shaping of the battery after cold pressing and improving battery quality and production efficiency.
Patent Information
- Application Number
- CN202520282965.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-20
- Publication Date
- 2026-01-23
- Estimated Expiration
- 2035-02-20
AI Technical Summary
In the current lithium-ion battery manufacturing process, formation and capacity testing are carried out separately, resulting in low production efficiency and the batteries are prone to deformation during hot and cold pressing, which affects battery quality.
Design a forming and shaping fixture, which is installed after the cold pressing fixture of the automated forming machine. The movable shaping frame is driven by a servo motor to press and release the battery, thereby realizing the shaping of the battery after cold pressing and improving the battery quality.
This improved the quality of battery formation, increased production efficiency, ensured that the battery did not deform after cold pressing, and achieved efficient shaping operations.
Smart Images
Figure CN223828453U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of lithium-ion battery manufacturing technology, specifically to a formation and shaping fixture. Background Technology
[0002] The formation process of lithium-ion secondary batteries is a crucial step in the manufacturing of lithium-ion batteries. Formation affects the overall performance of the battery, including initial charge-discharge efficiency, cycle life, high-temperature performance, and so on.
[0003] Currently, commercially available lithium-ion batteries generally use graphite or amorphous carbon, which can reversibly insert and extract lithium ions, as the negative electrode material. During the lithium-ion battery formation process, the organic electrolyte undergoes reduction and decomposition on the carbon negative electrode surface, forming an electronically insulating, lithium-ion-conducting solid electrolyte interphase (SEI) film. This results in a large irreversible capacity during the first charge and discharge cycle. During SEI film formation, some gases are generated, such as hydrogen fluoride, carbon dioxide, carbon monoxide, nitric oxide, ethylene, methane, and ethane. These gases remain between the layers of the film, blocking ionic conductivity between the anode and cathode. Gases remaining in the pores of the particles hinder electrolyte wetting, increasing electrochemical polarization, leading to low efficiency, increased irreversible capacity, an unstable SEI film, and poor cycle performance during the first charge and discharge cycle.
[0004] In the current lithium-ion secondary battery manufacturing field, formation and capacity testing involve placing each battery individually on an aging plate and then manually clamping the battery tabs. Moreover, formation and capacity testing are often performed separately. After formation, the battery is shaped, degassed, and then the capacity is measured. This requires two steps of placing and removing the battery on the aging plate and two steps of clamping the battery, which causes great inconvenience to production and results in low production efficiency.
[0005] To overcome the above problems, existing automated forming machines perform formation and capacity testing. During formation, the battery is clamped and pressure is applied to force accumulated gas into a gas bag, preventing it from affecting SEI film formation. Simultaneously, formation and capacity testing are performed, improving both battery performance and production efficiency. However, current automated forming machines generally only include hot-pressing and cold-pressing fixtures. Hot pressing is followed by cold pressing, and the battery is unloaded immediately after cold pressing. The resistors may deform under the combined effects of hot and cold pressing. Therefore, it is necessary to add a fixture after the cold-pressing fixture in the automated forming machine to reshape the battery. Utility Model Content
[0006] The purpose of this invention is to overcome the shortcomings of the prior art and provide a forming and shaping fixture that can shape the battery after cold pressing, thus ensuring the quality of the battery.
[0007] The technical solution of this utility model is as follows:
[0008] A shaping fixture includes a support base, a first linear guide rail, a second linear guide rail, a third linear guide rail, a fourth linear guide rail, a fifth linear guide rail, a sixth linear guide rail, a seventh linear guide rail, an eighth linear guide rail, a ninth linear guide rail, a tenth linear guide rail, an eleventh linear guide rail, a twelfth linear guide rail, a first servo motor, a second servo motor, a third servo motor, a fourth servo motor, a first movable shaping frame, and a second movable shaping frame.
[0009] The first, second, and third linear guide rails are spaced apart from front to back on the left side of the support base, and the fourth, fifth, and sixth linear guide rails are spaced apart from front to back on the left side of the support base, and the height of the fourth, fifth, and sixth linear guide rails is higher than the height of the first, second, and third linear guide rails.
[0010] The seventh, eighth, and ninth linear guides are spaced apart from front to back on the right side of the support base, and the tenth, eleventh, and twelfth linear guides are spaced apart from front to back on the right side of the support base. The height of the tenth, eleventh, and twelfth linear guides is higher than the height of the seventh, eighth, and ninth linear guides.
[0011] The first servo motor and the second servo motor are arranged front to back on the left side of the support base, and the third servo motor and the fourth servo motor are arranged front to back on the right side of the support base. The first servo motor and the third servo motor are arranged opposite each other left to right, and the second servo motor and the fourth servo motor are arranged opposite each other left to right.
[0012] The first movable shaping frame is slidably connected to the first linear guide rail, the second linear guide rail, the third linear guide rail, the seventh linear guide rail, the eighth linear guide rail, and the ninth linear guide rail respectively through six first sliding blocks. The motor shafts of the first servo motor and the third servo motor are respectively connected to the side ears on both sides of the first movable shaping frame. The second movable shaping frame is slidably connected to the fourth linear guide rail, the fifth linear guide rail, the sixth linear guide rail, the tenth linear guide rail, the eleventh linear guide rail, and the twelfth linear guide rail respectively through six second sliding blocks. The motor shafts of the second servo motor and the fourth servo motor are respectively connected to the side ears on both sides of the second movable shaping frame. The second movable shaping frame and the first movable shaping frame are arranged vertically parallel.
[0013] The second movable shaping frame is provided with several rows of second connecting rods at intervals, and several second shaping clips are protruding from the second connecting rods on the left and right. The first movable shaping frame is provided with several rows of first connecting rods at intervals corresponding to the second connecting rods of the second movable shaping frame, and several first shaping clips corresponding to the second shaping clips are protruding from the first connecting rods on the left and right.
[0014] Furthermore, the first linear guide, the fourth linear guide, and the first servo motor are mounted on the support base via a first mounting block; the fourth linear guide is mounted on the first mounting block via a first shim; the second and fifth linear guides are mounted on the support base via a second mounting block; the fifth linear guide is mounted on the second mounting block via a second shim; the third, sixth, and second servo motors are mounted on the support base via a third mounting block; the sixth linear guide is mounted on the third mounting block via a third shim; the seventh, tenth, and third linear guides and the third servo motor are mounted on the support base via a fourth mounting block; the tenth linear guide is mounted on the fourth mounting block via a fourth shim; the eighth and eleventh linear guides are mounted on the support base via a fifth mounting block; the eleventh linear guide is mounted on the fifth mounting block via a fifth shim; the ninth, twelfth, and fourth servo motors are mounted on the support base via a sixth mounting block; and the twelfth linear guide is mounted on the sixth mounting block via a sixth shim.
[0015] Furthermore, the second mounting block is also equipped with a first limit buffer and a second limit buffer located on the front and rear sides of the second linear guide rail and the fifth linear guide rail, and the fourth mounting block is also equipped with a third limit buffer and a fourth limit buffer located on the front and rear sides of the eighth linear guide rail and the eleventh linear guide rail.
[0016] Furthermore, the top ends of the first shaping clamp and the corresponding second shaping clamp are provided with opposing guide slopes.
[0017] Compared with the prior art, the beneficial effects of this utility model are as follows: The formation and shaping fixture provided by this utility model is installed after the cold pressing fixture of the automated forming machine. It can shape the battery after cold pressing to ensure the formation quality of the battery. During the shaping process, a robotic arm grabs the cold-pressed battery and places it between the first shaping clamp and the second shaping clamp for battery shaping. The first servo motor and the third servo motor synchronously drive the first movable shaping frame to move back and forth, and the second servo motor and the fourth servo motor synchronously drive the second movable shaping frame to move back and forth, thereby driving several first shaping clamps and second shaping clamps to move in opposite directions. Moving in opposite directions can press and shape the battery, and moving in opposite directions can loosen the battery. This formation and shaping fixture can shape several rows of batteries at the same time, with high shaping efficiency. Attached Figure Description
[0018] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0019] Figure 1 A schematic diagram of the structure of a chemical forming and shaping fixture provided by this utility model. Figure 1 ;
[0020] Figure 2 A schematic diagram of the structure of a chemical forming and shaping fixture provided by this utility model. Figure 2 . Detailed Implementation
[0021] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.
[0022] To illustrate the technical solution described in this utility model, specific embodiments are described below.
[0023] Example
[0024] Please see Figure 1 , Figure 2 This embodiment provides a forming and shaping fixture, including a support base 1, a first linear guide rail 2, a second linear guide rail 3, a third linear guide rail 4, a fourth linear guide rail 5, a fifth linear guide rail 6, a sixth linear guide rail 7, a seventh linear guide rail 8, an eighth linear guide rail 9, a ninth linear guide rail 10, a tenth linear guide rail 11, an eleventh linear guide rail 12, a twelfth linear guide rail 13, a first servo motor 14, a second servo motor 15, a third servo motor 16, a fourth servo motor 17, a first movable shaping frame 18, and a second movable shaping frame 19.
[0025] The first linear guide rail 2, the second linear guide rail 3, and the third linear guide rail 4 are spaced apart from front to back on the left side of the support base 1. The fourth linear guide rail 5, the fifth linear guide rail 6, and the sixth linear guide rail 7 are spaced apart from front to back on the left side of the support base 1, and the height of the fourth linear guide rail 5, the fifth linear guide rail 6, and the sixth linear guide rail 7 is higher than the height of the first linear guide rail 2, the second linear guide rail 3, and the third linear guide rail 4.
[0026] The seventh linear guide rail 8, the eighth linear guide rail 9, and the ninth linear guide rail 10 are spaced apart from front to back on the right side of the support base 1. The tenth linear guide rail 11, the eleventh linear guide rail 12, and the twelfth linear guide rail 13 are spaced apart from front to back on the right side of the support base 1, and the height of the tenth linear guide rail 11, the eleventh linear guide rail 12, and the twelfth linear guide rail 13 is higher than the height of the seventh linear guide rail 8, the eighth linear guide rail 9, and the ninth linear guide rail 10.
[0027] The first servo motor 14 and the second servo motor 15 are arranged front to back on the left side of the support base 1, and the third servo motor 16 and the fourth servo motor 17 are arranged front to back on the right side of the support base 1. The first servo motor 14 and the third servo motor 16 are arranged opposite each other from left to right, and the second servo motor 15 and the fourth servo motor 17 are arranged opposite each other from left to right.
[0028] The first movable shaping frame 18 is slidably connected to the first linear guide 2, the second linear guide 3, the third linear guide 4, the seventh linear guide 8, the eighth linear guide 9, and the ninth linear guide 10 respectively via six first sliding blocks 181. The motor shafts of the first servo motor 14 and the third servo motor 16 are connected to the side ears on both sides of the first movable shaping frame 18 respectively. The second movable shaping frame 19 is slidably connected to the fourth linear guide 5, the fifth linear guide 6, the sixth linear guide 7, the tenth linear guide 11, the eleventh linear guide 12, and the twelfth linear guide 13 respectively via six second sliding blocks 191. The motor shafts of the second servo motor 15 and the fourth servo motor 17 are connected to the side ears on both sides of the second movable shaping frame 19 respectively. The second movable shaping frame 19 is arranged vertically parallel to the first movable shaping frame 18.
[0029] The second movable shaping frame 19 is provided with several rows of second connecting rods 192 at intervals. Several second shaping clips 193 are protruding from the second connecting rods 192 on the left and right. The first movable shaping frame 18 is provided with several rows of first connecting rods 182 at intervals corresponding to the second connecting rods 192 of the second movable shaping frame 19. Several first shaping clips 183 corresponding to the second shaping clips 193 are protruding from the first connecting rods 182 on the left and right.
[0030] Among them, the first linear guide 2, the fourth linear guide 5, and the first servo motor 14 are mounted on the support base 1 via the first mounting block 20; the fourth linear guide 5 is mounted on the first mounting block 20 via the first shim 21; the second linear guide 3 and the fifth linear guide 6 are mounted on the support base 1 via the second mounting block 22; the fifth linear guide 6 is mounted on the second mounting block 22 via the second shim 23; the third linear guide 4, the sixth linear guide 7, and the second servo motor 15 are mounted on the support base 1 via the third mounting block 24; the sixth linear guide 7 is mounted on the third mounting block 24 via the third shim 25; and the seventh linear guide 14... Linear guide rail 8, tenth linear guide rail 11, and third servo motor 16 are mounted on support base 1 via fourth mounting block 26. Tenth linear guide rail 11 is mounted on fourth mounting block 26 via fourth shim block 27. Eighth linear guide rail 9 and eleventh linear guide rail 12 are mounted on support base 1 via fifth mounting block 28. Eleventh linear guide rail 12 is mounted on fifth mounting block 28 via fifth shim block 29. Ninth linear guide rail 10, twelfth linear guide rail 13, and fourth servo motor 5 are mounted on support base 1 via sixth mounting block 30. Twelfth linear guide rail 13 is mounted on sixth mounting block 30 via sixth shim block 31.
[0031] This formation and shaping fixture is installed after the cold pressing fixture on the automated forming machine. It can shape the battery after cold pressing to ensure the formation quality of the battery. During shaping, a robotic arm picks up the cold-pressed battery and places it between the first shaping clamp 183 and the second shaping clamp 193 for battery shaping. The first servo motor 14 and the third servo motor 16 synchronously drive the first movable shaping frame 18 to move back and forth, and the second servo motor 15 and the fourth servo motor 17 synchronously drive the second movable shaping frame 19 to move back and forth, thereby driving several first shaping clamps 183 and second shaping clamps 183 to move towards or in opposite directions. Moving towards each other can press and shape the battery, and moving in opposite directions can loosen the battery. This formation and shaping fixture can shape several rows of batteries at the same time, with high shaping efficiency.
[0032] The second mounting block 22 is also equipped with a first limiting buffer 32 and a second limiting buffer 33 located on the front and rear sides of the second linear guide rail 3 and the fifth linear guide rail 6. The fourth mounting block 26 is also equipped with a third limiting buffer 34 and a fourth limiting buffer 35 located on the front and rear sides of the eighth linear guide rail 9 and the eleventh linear guide rail 12. The first limiting buffer 32, the second limiting buffer 33, the third limiting buffer 34, and the fourth limiting buffer 35 move and limit the first movable shaping frame 18 and the second movable shaping frame 19 and provide a buffering effect.
[0033] Preferably, the top ends of the first shaping clip 183 and the corresponding second shaping clip 193 are provided with opposing guide slopes. The design of the guide slopes can provide a guiding effect for the battery so that the battery can be smoothly placed between the first shaping clip 183 and the second shaping clip 193.
[0034] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.
Claims
1. A chemical shaping fixture, characterized in that: It includes a support base, a first linear guide rail, a second linear guide rail, a third linear guide rail, a fourth linear guide rail, a fifth linear guide rail, a sixth linear guide rail, a seventh linear guide rail, an eighth linear guide rail, a ninth linear guide rail, a tenth linear guide rail, an eleventh linear guide rail, a twelfth linear guide rail, a first servo motor, a second servo motor, a third servo motor, a fourth servo motor, a first movable shaping frame, and a second movable shaping frame; The first, second, and third linear guide rails are spaced apart from front to back on the left side of the support base, and the fourth, fifth, and sixth linear guide rails are spaced apart from front to back on the left side of the support base, and the height of the fourth, fifth, and sixth linear guide rails is higher than the height of the first, second, and third linear guide rails. The seventh, eighth, and ninth linear guides are spaced apart from front to back on the right side of the support base, and the tenth, eleventh, and twelfth linear guides are spaced apart from front to back on the right side of the support base. The height of the tenth, eleventh, and twelfth linear guides is higher than the height of the seventh, eighth, and ninth linear guides. The first servo motor and the second servo motor are arranged front to back on the left side of the support base, and the third servo motor and the fourth servo motor are arranged front to back on the right side of the support base. The first servo motor and the third servo motor are arranged opposite each other left to right, and the second servo motor and the fourth servo motor are arranged opposite each other left to right. The first movable shaping frame is slidably connected to the first linear guide rail, the second linear guide rail, the third linear guide rail, the seventh linear guide rail, the eighth linear guide rail, and the ninth linear guide rail respectively through six first sliding blocks. The motor shafts of the first servo motor and the third servo motor are respectively connected to the side ears on both sides of the first movable shaping frame. The second movable shaping frame is slidably connected to the fourth linear guide rail, the fifth linear guide rail, the sixth linear guide rail, the tenth linear guide rail, the eleventh linear guide rail, and the twelfth linear guide rail respectively through six second sliding blocks. The motor shafts of the second servo motor and the fourth servo motor are respectively connected to the side ears on both sides of the second movable shaping frame. The second movable shaping frame and the first movable shaping frame are arranged vertically parallel. The second movable shaping frame is provided with several rows of second connecting rods at intervals, and several second shaping clips are protruding from the second connecting rods on the left and right. The first movable shaping frame is provided with several rows of first connecting rods at intervals corresponding to the second connecting rods of the second movable shaping frame, and several first shaping clips corresponding to the second shaping clips are protruding from the first connecting rods on the left and right.
2. The chemical forming and shaping fixture according to claim 1, characterized in that: The first linear guide, the fourth linear guide, and the first servo motor are mounted on the support base via a first mounting block. The fourth linear guide is mounted on the first mounting block via a first shim. The second and fifth linear guides are mounted on the support base via a second mounting block. The fifth linear guide is mounted on the second mounting block via a second shim. The third, sixth, and second servo motors are mounted on the support base via a third mounting block. The sixth linear guide is mounted on the third mounting block via a third shim. The seventh, tenth, and third linear guides are mounted on the support base via a fourth mounting block. The tenth linear guide is mounted on the fourth mounting block via a fourth shim. The eighth and eleventh linear guides are mounted on the support base via a fifth mounting block. The eleventh linear guide is mounted on the fifth mounting block via a fifth shim. The ninth, twelfth, and fourth servo motors are mounted on the support base via a sixth mounting block. The twelfth linear guide is mounted on the sixth mounting block via a sixth shim.
3. The chemical forming and shaping fixture according to claim 2, characterized in that: The second mounting block is also equipped with a first limit buffer and a second limit buffer located on the front and rear sides of the second linear guide rail and the fifth linear guide rail. The fourth mounting block is also equipped with a third limit buffer and a fourth limit buffer located on the front and rear sides of the eighth linear guide rail and the eleventh linear guide rail.
4. The chemical forming and shaping fixture according to claim 1, characterized in that: The top ends of the first shaping clamp and the corresponding second shaping clamp are provided with opposing guide slopes.