Formation clamp of soft package lithium ion battery

Abstract

The invention relates to a formation clamp of a soft package lithium ion battery. The formation clamp of the soft package lithium ion battery comprises a base body; a plurality of layers of laminating devices are arranged on the base body in the vertical direction, the laminating devices can slide up and down relative to the base body, and a bearing position for placing a soft package lithium ion battery to be formed is arranged between every two adjacent layers of laminating devices; the weight eliminating devices are connected with the laminating devices, the weight eliminating devices have upward acting force on the laminating devices so as to offset the gravity of the laminating devices, and all the laminating devices are connected with the weight eliminating devices; the pressure executing mechanism is used for applying pressure to the laminating devices, so that each layer of laminating device has preset pressure on the to-be-formed soft package lithium ion battery; and the pressure detection device is used for detecting the pressure applied to the laminating device by the pressure execution mechanism. According to the scheme, the pressure borne by the soft package lithium ion battery during formation can be more accurately controlled.

Description

Technical Field

[0001] The present application relates to the technical field of battery manufacturing, and in particular to a formation fixture for a soft-pack lithium-ion battery. Background Art

[0002] Soft-pack lithium-ion batteries are the third generation of lithium batteries developed on the basis of the original steel shell, aluminum shell and plastic shell batteries. They are widely favored by domestic and foreign users for their advantages such as being lighter, thinner, safer, higher in energy density, better in power performance, and environmentally friendly. Therefore, soft-pack lithium-ion battery products are also widely used in electric vehicles, mobile power supplies, digital electronic products, smart wearable products, electric toys, and many other fields.

[0003] The formation of soft-pack lithium-ion batteries is one of the key processes in their production process, and the pressure to which soft-pack lithium-ion batteries are subjected during formation is one of the important parameters of the formation. The pressure to which soft-pack lithium-ion batteries are subjected during formation will affect the effect of the formation and further affect the performance of the battery.

[0004] In the related art, a formation cabinet simultaneously forms multiple layers of soft-pack lithium-ion batteries, but cannot accurately control the pressure on each layer of soft-pack lithium-ion batteries, thereby affecting the battery's performance, appearance, and consistency between different batteries. Summary of the invention

[0005] In order to solve or partially solve the problems existing in the related art, the present application provides a formation fixture for a soft-pack lithium-ion battery, which can more accurately control the pressure exerted on the soft-pack lithium-ion battery during formation.

[0006] The present application provides a formation fixture for soft-pack lithium-ion batteries, comprising: a substrate; a laminating device, wherein a plurality of laminating devices are arranged on the substrate in a vertical direction, the laminating device is movably connected to the substrate, the laminating device can slide up and down relative to the substrate, and a receiving position for placing soft-pack lithium-ion batteries to be formed is arranged between two adjacent layers of the laminating devices; a weight-removing device, connected to the laminating device, the weight-removing device has an upward force on the laminating device to offset the gravity of the laminating device, and each of the laminating devices is connected to the weight-removing device; a pressure actuator, used to apply pressure to the laminating device, so that each layer of the laminating device has a preset pressure on the soft-pack lithium-ion batteries to be formed; and a pressure detection device, used to detect the pressure applied by the pressure actuator to the laminating device.

[0007] Furthermore, the weight reduction device includes a weight reduction member, a traction member and a support member, one end of the traction member is connected to the weight reduction member, and the other end of the traction member is connected to the laminating device after bypassing the support member, and the weight reduction member offsets the gravity of the laminating device through the traction member.

[0008] Furthermore, the weight-removing member is slidably connected to the base, and the weight-removing member can slide up and down relative to the base;

[0009] The weight-removing devices are respectively arranged on two opposite sides of the laminating device.

[0010] Furthermore, the support member is arranged on the base, and the support member comprises a bracket and a fixed pulley rotatably connected to the bracket, and the fixed pulley can rotate relative to the bracket;

[0011] The traction member is a traction rope, which is wound around the fixed pulley (432).

[0012] Furthermore, the pressure actuator includes a driving member and a pressing member connected to the driving member, and the driving member is used to drive the pressing member to move up and down;

[0013] The pressing member can press upwards the laminating device located at the bottom layer, or

[0014] The pressing member can press downward the laminating device located at the uppermost layer.

[0015] Furthermore, the pressure actuator also includes a screw rod disposed on the base, the screw rod can rotate relative to the base, the pressure member is threadedly connected to the screw rod, and the driving member is used to drive the screw rod to rotate.

[0016] Furthermore, the pressure actuator also includes a gear set, the driving member is a motor, and the driving member is connected to the screw rod through the gear set.

[0017] Furthermore, the pressure member includes a first pressure plate and a second pressure plate, the first pressure plate and the second pressure plate are arranged at intervals in the vertical direction, the first pressure plate is connected to the driving member, the second pressure plate is located between the first pressure plate and the laminating device, and the pressure detection device is connected between the first pressure plate and the second pressure plate.

[0018] Furthermore, the pressure member also includes a third pressure plate and an elastic member, the third pressure plate is located between the second pressure plate and the laminating device, the elastic member is located between the second pressure plate and the third pressure plate, and the side of the third pressure plate facing away from the elastic member abuts against the laminating device.

[0019] Furthermore, the laminating device includes a laminating plate and a tray arranged on the upper surface of the laminating plate, the laminating plate is slidably connected to the base, and the laminating plate can slide up and down relative to the base.

[0020] The technical solution provided by the present application may include the following beneficial effects: by providing a receiving position between two adjacent laminating devices in the upper and lower layers, the soft-pack lithium-ion battery to be formed is placed in the receiving position during formation, and pressure is applied to the laminating device by a pressure actuator so that each layer of the laminating device has a preset pressure on the soft-pack lithium-ion battery to be formed, and by providing a weight-removing device connected to the laminating device, the weight-removing device has an upward force on the laminating device to offset the gravity of the laminating device, thereby eliminating the influence of the gravity of the laminating device itself on the pressure of the soft-pack lithium-ion battery to be formed, and ensuring that the pressure of each layer of the laminating device on the soft-pack lithium-ion battery to be formed is consistent, and the pressure applied to the laminating device by the pressure actuator is detected by a pressure detection device to ensure that the pressure to which the soft-pack lithium-ion battery is subjected during formation is at a preset value.

[0021] It should be understood that the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The above and other objects, features and advantages of the present application will become more apparent by describing in more detail exemplary embodiments of the present application in conjunction with the accompanying drawings, wherein the same reference numerals generally represent the same components in the exemplary embodiments of the present application.

[0023] Figure 1 Schematic diagram of the structure of the formation fixture of the soft-pack lithium-ion battery shown in the embodiment of the present application;

[0024] Figure 2 It is a front view of a formation fixture for a soft-pack lithium-ion battery shown in an embodiment of the present application;

[0025] Figure 3 It is a rear view of the formation fixture of the soft-pack lithium-ion battery shown in the embodiment of the present application.

[0026] Reference numerals:

[0027] 1-base, 11-base, 12-top plate, 13-first guide rod, 14-second guide rod;

[0028] 2-laminating device, 21-laminating board, 22-tray;

[0029] 3- receiving position;

[0030] 4-weight-removing device, 41-weight-removing member, 42-traction member, 43-support member, 431-bracket, 432-fixed pulley;

[0031] 5-pressure actuator, 51-driving member, 52-pressure member, 521-first pressure plate, 522-second pressure plate, 523-third pressure plate, 524-elastic member, 525-sliding rod, 53-screw rod, 54-gear set; 6-pressure detection device. DETAILED DESCRIPTION

[0032] The embodiments of the present application will be described in more detail below with reference to the accompanying drawings. Although the embodiments of the present application are shown in the accompanying drawings, it should be understood that the present application can be implemented in various forms and should not be limited by the embodiments described herein. On the contrary, these embodiments are provided to make the present application more thorough and complete, and to fully convey the scope of the present application to those skilled in the art.

[0033] It should be understood that although the terms "first", "second", "third", etc. may be used in this application to describe various information, this information should not be limited to these terms. These terms are only used to distinguish the same type of information from each other. For example, without departing from the scope of this application, the first information may also be referred to as the second information, and similarly, the second information may also be referred to as the first information. Thus, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of this application, the meaning of "multiple" is two or more, unless otherwise clearly and specifically defined.

[0034] In the description of the present application, it should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0035] Unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, or a detachable connection or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0036] The technical solution of the embodiments of the present application is described in detail below with reference to the accompanying drawings.

[0037] like Figures 1 to 3As shown, the embodiment of the present application provides a formation fixture for a soft-pack lithium-ion battery, including a substrate 1, a laminating device 2, a weight removal device 4, a pressure actuator 5 and a pressure detection device 6. A multi-layer laminating device 2 is provided on the substrate 1 in the vertical direction. The laminating device 2 is movably connected to the substrate 1. The laminating device 2 can slide up and down relative to the substrate 1. A receiving position 3 for placing the soft-pack lithium-ion battery to be formed is provided between two adjacent layers of laminating devices 2. Among them, the soft-pack lithium-ion battery to be formed is placed on the upper surface of the laminating device 2, and the two adjacent layers of laminating devices 2 squeeze the soft-pack lithium-ion battery to be formed to apply a certain pressure to the soft-pack lithium-ion battery.

[0038] The weight removal device 4 is connected to the laminating device 2 . The weight removal device 4 exerts an upward force on the laminating device 2 to offset the gravity of the laminating device 2 . Each laminating device 2 is connected to the weight removal device 4 .

[0039] The pressure actuator 5 is used to press the laminating device 2 so that each layer of the laminating device 2 has a preset pressure on the soft-pack lithium-ion battery to be formed. The pressure actuator 5 can apply force to the laminating device 2 at the bottom layer from bottom to top, and can also apply force to the laminating device 2 at the top layer from top to bottom, so that each laminating device 2 presses against the corresponding soft-pack lithium-ion battery to be formed.

[0040] The pressure detection device 6 is used to detect the pressure exerted by the pressure actuator 5 on the laminating device 2. Since the gravity of each laminating device 2 is offset by the weight elimination device 4, after the pressure actuator 5 exerts pressure on the laminating device 2, the pressure exerted on each laminating device 2 is the same, and the pressure exerted on each layer of soft-pack lithium-ion batteries to be formed is the same.

[0041] By providing a receiving position 3 between two adjacent laminating devices 2 in the upper and lower layers, the soft-pack lithium-ion battery to be formed is placed in the receiving position 3 during formation, and a pressure actuator 5 is used to provide a resisting force to the laminating device 2, so that each layer of the laminating device 2 has a preset pressure on the soft-pack lithium-ion battery to be formed. By providing a weight removal device 4 connected to the laminating device 2, the weight removal device 4 has an upward force on the laminating device 2 to offset the gravity of the laminating device 2, thereby eliminating the influence of the gravity of the laminating device 2 itself on the pressure of the soft-pack lithium-ion battery to be formed, and ensuring that the pressure of each layer of the laminating device 2 on the soft-pack lithium-ion battery to be formed is consistent, and the pressure of the pressure actuator 5 on the laminating device 2 is detected by the pressure detection device 6, so as to ensure that the pressure on the soft-pack lithium-ion battery during formation is at a preset value.

[0042] Specifically, Figures 1 to 3As shown, the base 1 includes a first guide rod 13, which is arranged in the vertical direction. The laminating device 2 is slidably connected to the first guide rod 13. The laminating device 2 is rectangular. The number of the first guide rods 13 is four. The four first guide rods 13 are respectively arranged at the four corners of the laminating device 2 to limit the laminating device 2 from moving on the first guide rod 13 in the vertical direction. A linear bearing can be arranged on the laminating device 2, and the linear bearing is sleeved on the first guide rod 13 to reduce the friction between the laminating device 2 and the first guide rod 13.

[0043] It should be noted that the weight of the soft-pack lithium-ion battery to be formed is relatively small, and the weights of batteries of different models are different. Therefore, the gravity of the soft-pack lithium-ion battery to be formed has little effect on the formation. This embodiment does not consider eliminating the gravity of the soft-pack lithium-ion battery, but it may also be considered in other embodiments.

[0044] In some embodiments, the weight-removing device 4 includes a weight-removing member 41, a traction member 42, and a support member 43. One end of the traction member 42 is connected to the weight-removing member 41, and the other end of the traction member 42 is connected to the laminating device 2 after bypassing the support member 43. The weight-removing member 41 offsets the gravity of the laminating device 2 through the traction member 42. The gravity of the weight-removing member 41 is equivalent to the gravity of the laminating device 2, so that the weight-removing member 41 always has an upward force on the laminating device 2 that is the same as the gravity of the laminating device 2, and the laminating device 2 is always subject to this force when moving up and down. Specifically, each laminating device 2 can be connected to multiple weight-removing members 41, and the sum of the gravity of all weight-removing members 41 connected to the laminating device 2 is equal to the gravity of the laminating device 2 itself. The support member 43 is located at the upper end of the substrate 1, and both ends of the traction member 42 are located below the support member 43.

[0045] In some embodiments, the weight-removing member 41 is slidably connected to the base 1 , and the weight-removing member 41 can slide up and down relative to the base 1 ; the weight-removing devices 4 are respectively provided on two opposite sides of the laminating device 2 .

[0046] Specifically, Figures 1 to 3 As shown, the base 1 includes a second guide rod 14 arranged in the vertical direction, and the weight-removing member 41 is connected to the second guide rod 14 and can slide up and down along the second guide rod 14, and the second guide rod 14 penetrates the weight-removing member 41. The left and right sides of the base 1 are respectively provided with second guide rods 14, and the weight-removing members 41 on the left and right sides of the laminating device 2 are respectively provided on the corresponding second guide rods 14, and the weight-removing members 41 are moved in opposite directions by the traction member 42 when the laminating device 2 moves up and down. Among them, the weight-removing members 41 on each side of the base 1 are arranged in two rows, and accordingly, the second guide rods 14 on each side of the base 1 have two rows, and each row of the second guide rods 14 has two, and each row of the second guide rods 14 is provided with a row of weight-removing members 41, and each weight-removing member 41 is connected to the two second guide rods 14 in each row.

[0047] In some embodiments, the support member 43 is disposed on the base 1, and the support member 43 includes a bracket 431 and a fixed pulley 432 rotatably connected to the bracket 431, the fixed pulley 432 can rotate relative to the bracket 431, and the fixed pulley 432 abuts against the traction member 42; the traction member 42 is a traction rope, which is wound around the fixed pulley 432.

[0048] Specifically, Figures 1 to 3 As shown, the base 1 also includes a base 11 and a top plate 12, and the first guide rod 13 and the second guide rod 14 are both arranged between the base 11 and the top plate 12. A bracket 431 is arranged on the top plate 12, and a rod body is arranged on the bracket 431, and a fixed pulley 432 is sleeved on the rod body and can rotate relative to the rod body. There are multiple fixed pulleys 432, and each traction member 42 has a corresponding fixed pulley 432.

[0049] In some embodiments, Figures 1 to 3 As shown, the pressure actuator 5 includes a driving member 51 and a pressing member 52 connected to the driving member 51 , and the driving member 51 is used to drive the pressing member 52 to move up and down; the pressing member 52 can press upward on the laminating device 2 located at the bottom layer, thereby exerting upward pressure on each laminating device 2.

[0050] Specifically, the pressure actuator 5 is arranged at the lower end of the base 1, that is, one end having a base 11, the driving member 51 is arranged on the base 11, the pressing member 52 is located above the base 11 and below the bottom laminating device 2, and when the driving member 51 drives the pressing member 52 to move upward, the pressing member 52 presses upward against the bottom laminating device 2 until the laminating devices 2 of each layer are pressed to reach a preset pressure value.

[0051] In some embodiments, the pressure member 52 can also press downward on the laminating device 2 located at the top layer, the pressure actuator 5 is arranged at the upper end of the base 1, the driving member 51 is arranged on the top plate 12, and the pressure member 52 is located below the top plate 12 and above the laminating device 2 at the top layer.

[0052] In some embodiments, Figures 1 to 3 As shown, the pressure actuator 5 also includes a screw rod 53 arranged on the base 1, the screw rod 53 can rotate relative to the base 1, the pressure piece 52 is threadedly connected to the screw rod 53, and the driving member 51 is used to drive the screw rod 53 to rotate. When the screw rod 53 rotates, it drives the pressure piece 52 to rise and fall.

[0053] Specifically, the screw rod 53 is located between the base 11 and the top plate 12 , and the screw rod 53 is rotatably connected to the base 11 and the top plate 12 respectively. The pressing member 52 may be provided with a screw rod nut sleeved on the screw rod 53 .

[0054] In some embodiments, Figures 1 to 3As shown, the pressure actuator 5 also includes a gear set 54, the driving member 51 is a motor, the driving member 51 is connected to the screw rod 53 through the gear set 54, the output shaft of the driving member 51 is connected to the input end of the gear set 54, and the output end of the gear set 54 is connected to the lower end of the screw rod 53.

[0055] In some embodiments, Figures 1 to 3 As shown, the pressure member 52 includes a first pressure plate 521 and a second pressure plate 522, the first pressure plate 521 and the second pressure plate 522 are arranged at intervals in the vertical direction, the first pressure plate 521 is connected to the driving member 51, the second pressure plate 522 is located between the first pressure plate 521 and the laminating device 2, and the pressure detection device 6 is connected between the first pressure plate 521 and the second pressure plate 522.

[0056] Specifically, the second pressure plate 522 is located above the first pressure plate 521, the first pressure plate 521 is connected to the screw rod 53, the pressure detection device 6 is a pressure sensor, the upper end of the pressure detection device 6 contacts the lower surface of the second pressure plate 522, and the lower end of the pressure detection device 6 contacts the upper surface of the first pressure plate 521. The second pressure plate 522 can move up and down relative to the first pressure plate 521, thereby compressing the pressure detection device 6, so that the pressure detection device 6 detects the pressure between the two, and the detected pressure is the pressure of the second pressure plate 522 on the laminating device 2. A sliding rod 525 can be set between the second pressure plate 522 and the first pressure plate 521, one end of the sliding rod 525 is fixedly connected to the second pressure plate 522, and the other end is slidably connected to the first pressure plate 521 in the vertical direction.

[0057] In some embodiments, Figures 1 to 3 As shown, the pressing member 52 also includes a third pressing plate 523 and an elastic member 524. The third pressing plate 523 is located between the second pressing plate 522 and the laminating device 2. The elastic member 524 is located between the second pressing plate 522 and the third pressing plate 523. The side of the third pressing plate 523 facing away from the elastic member 524 abuts against the laminating device 2.

[0058] Specifically, the elastic member 524 can play a buffering role when the third pressing plate 523 presses the laminating device 2, preventing the laminating device 2 from being damaged by rigid impact. In addition, the third pressing plate 523 can also adjust its own flatness through the elastic member 524 to ensure that the upper surface of the third pressing plate 523 is parallel to the laminating device 2 when pressing the laminating device 2, preventing the third pressing plate 523 from concentrating stress on the laminating device 2 and damaging the laminating device 2. Among them, the third pressing plate 523 is slidably connected to the first guide rod 13, and the third pressing plate 523 is provided with a through hole sleeved on the first guide rod 13, and the diameter of the through hole is greater than the diameter of the first guide rod 13 by a certain size, so that the third pressing plate 523 can adjust its flatness on the horizontal plane. The elastic member 524 can be a compression spring, and the number of the elastic members 524 is multiple, and the multiple elastic members 524 can be evenly distributed between the third pressing plate 523 and the second pressing plate 522.

[0059] The driving member 51 drives the screw rod 53 to rotate through the gear set 54. When the screw rod 53 rotates, it drives the first pressure plate 521 to move toward the laminating device 2. The first pressure plate 521 drives the second pressure plate 522 to move through the pressure detection device 6. The second pressure plate 522 drives the third pressure plate 523 to move through the elastic member 524, so that the third pressure plate 523 presses the laminating device 2.

[0060] In some embodiments, Figures 1 to 3 As shown, the laminating device 2 includes a laminating plate 21 and a tray 22 arranged on the upper surface of the laminating plate 21. The laminating plate 21 is slidably connected to the base 1, and the laminating plate 21 can slide up and down relative to the base 1.

[0061] Specifically, the laminate 21 is slidably connected to the first guide rod 13, and the tray 22 is used to place the soft-pack lithium-ion battery to be formed. The tray 22 is slidably connected to the laminate 21, and the tray 22 can be pulled out from the laminate 21, so as to facilitate the placement of the soft-pack lithium-ion battery to be formed. A silicone sheet can also be placed on the tray 22, and a business card paper is placed on the silicone sheet, and the soft-pack lithium-ion battery to be formed is placed on the business card paper.

[0062] In some embodiments, the action of the pressure actuator 5 pressing the laminating device 2 is controlled by a controller, and the controller is electrically connected to the driving member 51 and the pressure detection device 6 respectively. The controller can control the action of the driving member 51 according to the detection value of the pressure detection device 6, so that the pressing force of the pressing member 52 on the laminating device 2 is kept within a set range during the formation. The controller can be a control device such as a PLC, a single-chip microcomputer, an industrial computer, a host computer, etc.

[0063] The scheme of the present application has been described in detail above with reference to the accompanying drawings. In the above embodiments, the descriptions of the various embodiments have their own emphasis. For parts that are not described in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments. Those skilled in the art should also be aware that the actions and modules involved in the specification are not necessarily required for the present application. In addition, it can be understood that the steps in the method of the embodiment of the present application can be adjusted in order, merged and deleted according to actual needs, and the modules in the device of the embodiment of the present application can be merged, divided and deleted according to actual needs.

[0064] The embodiments of the present application have been described above, and the above description is exemplary, not exhaustive, and is not limited to the disclosed embodiments. Many modifications and changes will be apparent to those of ordinary skill in the art without departing from the scope and spirit of the described embodiments. The selection of terms used herein is intended to best explain the principles of the embodiments, practical applications, or improvements to the technology in the market, or to enable other persons of ordinary skill in the art to understand the embodiments disclosed herein.

Claims

1. A formation fixture for a soft-pack lithium-ion battery, characterized in that: include: Matrix (1); A laminating device (2), wherein a plurality of laminating devices (2) are arranged on the substrate (1) in a vertical direction, the laminating device (2) is movably connected to the substrate (1), the laminating device (2) can slide up and down relative to the substrate (1), and a receiving position (3) for placing soft-pack lithium-ion batteries to be formed is arranged between two adjacent layers of the laminating devices (2); A weight-removing device (4) connected to the laminating device (2), the weight-removing device (4) exerting an upward force on the laminating device (2) to offset the gravity of the laminating device (2), and each of the laminating devices (2) is connected to the weight-removing device (4); A pressure actuator (5) is used to apply pressure to the laminating device (2) so that each layer of the laminating device (2) has a preset pressure on the soft-pack lithium-ion battery to be formed; A pressure detection device (6) is used to detect the pressure applied by the pressure actuator (5) to the laminating device (2).

2. The formation fixture for a soft-pack lithium-ion battery according to claim 1, characterized in that: The weight-reducing device (4) comprises a weight-reducing member (41), a traction member (42) and a support member (43); one end of the traction member (42) is connected to the weight-reducing member (41); the other end of the traction member (42) bypasses the support member (43) and is connected to the laminating device (2); the weight-reducing member (41) offsets the gravity of the laminating device (2) through the traction member (42).

3. The formation fixture for a soft-pack lithium-ion battery according to claim 2, characterized in that: The weight-removing member (41) is slidably connected to the base (1), and the weight-removing member (41) can slide up and down relative to the base (1); The weight reduction devices (4) are respectively provided on two opposite sides of the laminating device (2).

4. The formation fixture for a soft-pack lithium-ion battery according to claim 2, characterized in that: The support member (43) is arranged on the base (1), and comprises a bracket (431) and a fixed pulley (432) rotatably connected to the bracket (431), and the fixed pulley (432) is rotatable relative to the bracket (431); The traction member (42) is a traction rope, which is wound around the fixed pulley (432).

5. The formation fixture for a soft-pack lithium-ion battery according to claim 1, characterized in that: The pressure actuator (5) comprises a driving member (51) and a pressing member (52) connected to the driving member (51), wherein the driving member (51) is used to drive the pressing member (52) to move up and down; The pressing member (52) can press upwards the laminating device (2) located at the bottom layer, or The pressing member (52) is capable of pressing downwards the laminating device (2) located at the uppermost layer.

6. The formation fixture for a soft-pack lithium-ion battery according to claim 5, characterized in that: The pressure actuator (5) further comprises a screw rod (53) arranged on the base (1), the screw rod (53) being rotatable relative to the base (1), the pressure member (52) being threadedly connected to the screw rod (53), and the driving member (51) being used for driving the screw rod (53) to rotate.

7. The formation fixture for a soft-pack lithium-ion battery according to claim 6, characterized in that: The pressure actuator (5) further comprises a gear set (54); the driving member (51) is a motor; and the driving member (51) is connected to the screw rod (53) via the gear set (54).

8. The formation fixture for a soft-pack lithium-ion battery according to claim 5, characterized in that: The pressure member (52) includes a first pressure plate (521) and a second pressure plate (522), wherein the first pressure plate (521) and the second pressure plate (522) are arranged at intervals in the vertical direction, the first pressure plate (521) is connected to the driving member (51), the second pressure plate (522) is located between the first pressure plate (521) and the laminating device (2), and the pressure detecting device (6) is connected between the first pressure plate (521) and the second pressure plate (522).

9. The formation fixture for a soft-pack lithium-ion battery according to claim 8, characterized in that: The pressing member (52) further comprises a third pressing plate (523) and an elastic member (524), wherein the third pressing plate (523) is located between the second pressing plate (522) and the laminating device (2), and the elastic member (524) is located between the second pressing plate (522) and the third pressing plate (523), and the side of the third pressing plate (523) facing away from the elastic member (524) is in contact with the laminating device (2).

10. The formation fixture for a soft-pack lithium-ion battery according to claim 1, characterized in that: The laminating device (2) comprises a laminating plate (21) and a tray (22) arranged on the upper surface of the laminating plate (21); the laminating plate (21) is slidably connected to the base (1); and the laminating plate (21) can slide up and down relative to the base (1).

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