Restraint tray body with negative pressure follow-up device

Abstract

A restraint tray body with a negative pressure follow-up device relates to the technical field of lithium battery production equipment, and is characterized by comprising a restraint tray body, a negative pressure module, a lifting mechanism and a follow-up device, the negative pressure module is mounted on the upper portion of the restraint tray body through the lifting mechanism, the follow-up device is arranged on the negative pressure module, and the negative pressure module is connected with the negative pressure module. And the follow-up device is connected with the restraining tray body. The negative pressure cup follow-up structure design is adopted on the constant pressure restraining tray body, in the tray restraining process, the negative pressure cup in the negative pressure module moves along with the movement of the battery, accumulated errors are eliminated, on the premise that constant pressure is guaranteed, the alignment accuracy of the battery and the negative pressure suction nozzle is improved, the negative pressure process is made to be smooth, and the production efficiency is improved. The qualification rate of battery formation is improved, and the consistency of battery performance is ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of lithium battery production equipment, in particular to a restraint tray body with a negative pressure follower device. Background Art

[0002] In the formation process of lithium batteries, pressurized formation of batteries is beneficial to improve the energy density and life of lithium batteries. There are two common pressurized restraint tray bodies. One is the fixed-distance restraint tray body. The fixed-pressure restraint tray body ensures the consistency of battery pressure. Since there are errors in the thickness of the layer plate of the restraint tray body and the battery, the more single-row batteries there are in the tray, the greater the cumulative error in the distance between the batteries. The closer the battery is to the restraint head, the more serious the alignment offset between the battery and the negative pressure nozzle will be, causing air leakage during the negative pressure process, which in turn leads to a decrease in the qualified rate of battery formation. The second is the fixed-distance restraint tray body. The fixed-distance restraint tray body ensures that the distance between the batteries remains constant, and can achieve precise alignment between the battery and the negative pressure nozzle. Since the thickness of the tray layer plate and the thickness of the battery are different, in order to keep the battery distance consistent, the pressure of each battery is different, which leads to different performance of the battery after formation, which has a certain impact on the capacity and life of the battery.

[0003] Therefore, the existing restraint tray body lacks a structure that can simultaneously avoid uneven pressure and inaccurate positioning of the negative pressure suction nozzle. Utility Model Content

[0004] The purpose of the utility model is to provide a restraint tray body with a negative pressure follower device. By adding a follower device to the constant pressure restraint tray body, the negative pressure cup assembly can move with the movement of the battery, thereby achieving accurate alignment of the negative pressure suction nozzle and the battery injection port. This structure can ensure good consistency of the restraint pressure of each battery in the tray, and can also ensure accurate pressing of the negative pressure suction nozzle and the battery injection port, thereby improving the consistency of battery performance, with a simple structure and convenient operation.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] A restraint tray body with a negative pressure follower device, characterized in that it includes a restraint tray body and a negative pressure module, a lifting mechanism and a follower device, the negative pressure module is installed on the upper part of the restraint tray body through the lifting mechanism, the negative pressure module is provided with a follower device, and the follower device is connected to the restraint tray body.

[0007] A preferred technical solution, the restraint tray body includes a bottom plate, a front end plate is fixedly provided at one end of the upper side of the bottom plate, and a rear end plate is fixedly provided at the other end of the upper side of the bottom plate, an intermediate layer plate is evenly fixedly provided at the middle position of the upper side of the bottom plate, and an end layer plate is fixedly provided on the upper side of the bottom plate and close to the front end plate and the rear end plate, a first guide rail is installed on the top of the front end plate and the rear end plate, the first guide rail is connected to the lifting mechanism, and the top of the end layer plate of the intermediate layer plate adopts a slot design, and the slot is connected to the follower device.

[0008] A preferred technical solution, the negative pressure module includes a fixed bracket, a negative pressure cup and a bus are provided on the fixed bracket, the negative pressure cup and the bus are connected by staggered air pipes, the bus is connected to an air control valve, and the conduction of the bus is controlled by the air control valve, the air control valve is provided with two flexible joints, one for opening and closing the positive pressure control air circuit, and the other for passing negative pressure.

[0009] A preferred technical solution, the lifting mechanism includes a base, a guide rod is provided on the base and the guide rod is placed parallel to the first guide rail on the restraint tray body, both ends of the guide rod are fixedly installed on the restraint tray body through the base, the guide rod is provided with a first compression spring, a stop block is slidably connected to the guide rod, one end of the first compression spring is connected to the stop block, the other end of the first compression spring is connected to the base, one end of the stop block is connected to an adjustment block, the other end of the stop block is connected to a slider adapter plate, the adjustment block is installed on the restraint tray body for determining the position of the stop block, the slider adapter plate is connected to the first guide rail of the restraint tray body through the first slider, the slider adapter plate is provided with a second compression spring and a module mounting plate, both are used for connecting with the negative pressure module; the bottom end of the negative pressure module is placed on the top end of the second compression spring, and the negative pressure module is connected to the module mounting plate by a slide rail design.

[0010] According to a preferred technical solution, the negative pressure module comprises a second slider, the negative pressure module is fixedly connected to the module mounting plate, second guide rails are fixedly mounted on both sides of the negative pressure module, and the second slider and the second guide rail are slidably matched.

[0011] According to a preferred technical solution, the adjusting block has a waist hole design.

[0012] A preferred technical solution, the follower device includes a third slider, a third guide rail, a pad and a connecting rod, the third slider is fixedly connected to the pad, and is installed on the third guide rail and can slide back and forth, the third guide rail is fixedly installed on the negative pressure module, the pad is fixedly connected to the nozzle rod guide sleeve, the bottom end of the pad is connected to the connecting rod, the connecting rod is embedded in the slots of the middle layer and the end layer, and the connection between the connecting rod and the pad is adjustable.

[0013] According to a preferred technical solution, a rotating plate is rotatably provided at the middle position of the upper part of the body, the lower end of the rotating plate is configured to be pointed, and a vertical marking line is marked at a position on the body near the lower end of the rotating plate.

[0014] Compared with the prior art, the beneficial effects of the utility model are:

[0015] The utility model adopts a negative pressure cup follower structure design on the constant pressure restraint tray body. During the tray restraint process, the negative pressure cup in the negative pressure module moves with the movement of the battery, eliminating the cumulative error. Under the premise of ensuring constant pressure, the accuracy of the alignment between the battery and the negative pressure suction nozzle is improved, the negative pressure process is smooth, the battery formation qualification rate is improved, and the consistency of battery performance is ensured. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0017] Figure 2 This is a schematic diagram of the front structure of the utility model;

[0018] Figure 3 For this utility model Figure 1 A schematic diagram of the enlarged structure of part A;

[0019] Figure 4 For this utility model Figure 1 A schematic diagram of the enlarged structure of part B;

[0020] In the figure: 1. restraint tray body; 2. negative pressure module; 3. lifting mechanism; 4. follower device; 11. front end plate; 12. rear end plate; 13. middle layer plate; 14. end layer plate; 15. first guide rail; 16. bottom plate; 21. second slider; 22. second guide rail; 23. negative pressure cup; 24. bus; 25. air control valve; 26. fixed bracket; 31. guide rod; 32. first compression spring; 33. stopper; 34. adjustment block; 35. slider adapter plate; 36. first slider; 37. second compression spring; 38. module mounting plate; 39. base; 41. third slider; 42. third guide rail; 43. pad; 44. connecting rod. DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.

[0022] In order to facilitate the understanding of the present invention, the present invention will be described more fully below with reference to the relevant drawings. Several embodiments of the present invention are given in the drawings. However, the present invention can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present invention more thorough and comprehensive.

[0023] like Figure 1 As shown, a restraint tray body with a negative pressure follower device includes a restraint tray body 1 and a negative pressure module 2, a lifting mechanism 3 and a follower device 4. The negative pressure module 2 is installed on the upper part of the restraint tray body 1 through the lifting mechanism 3. The negative pressure module 2 is provided with a follower device 4. The follower device 4 controls the position of the negative pressure cup by connecting with the restraint tray body 1. The restraint tray body 1 includes a bottom plate 16, a front end plate 11 is fixedly provided at one end of the upper side of the bottom plate 16, and a rear end plate 12 is fixedly provided at the other end of the upper side of the bottom plate 16, an intermediate layer plate 13 is evenly fixedly provided at the middle position of the upper side of the bottom plate 16, an end layer plate 14 is fixedly provided on the upper side of the bottom plate 16 and close to the front end plate 11 and the rear end plate 12, a first guide rail 15 is installed on the top of the front end plate 11 and the rear end plate 12, the first guide rail 15 is connected to the lifting mechanism 3, and the top of the end layer plate 14 of the intermediate layer plate 13 is designed with a slot, and the slot is connected to the follower device 4.

[0024] like Figure 2 As shown, the negative pressure module 2 includes a fixed bracket 26, on which a negative pressure cup 23 and a bus 24 are provided. The negative pressure cup 23 and the bus 24 are connected by an air pipe staggered connection, which is convenient for adjusting the negative pressure cup 23 and ensuring that the air pipe guide is unobstructed. The bus 24 is connected to the air control valve 25, and the conduction of the bus 24 is controlled by the air control valve 25. The air control valve 25 is provided with two soft joints, one for opening and closing the positive pressure control air path, and the other for passing negative pressure. The soft joint is designed to prevent air leakage during docking.

[0025] like Figure 3As shown, the lifting mechanism 3 includes a base 39, a guide rod 31 is provided on the base 39, and the guide rod 31 is placed parallel to the first guide rail 15 on the restraint tray body 1, and both ends of the guide rod 31 are fixedly installed on the restraint tray body 1 through the base 39, and the guide rod 31 is provided with a first compression spring 32, and a stopper 33 is slidably connected to the guide rod 31, one end of the first compression spring 32 is connected to the stopper 33, and the other end of the first compression spring 32 is connected to the base 39. The first compression spring 32 works by elasticity. When subjected to an external load, the first compression spring 32 shrinks and deforms, and the external load is removed. The negative pressure module 2 can be avoided when the battery is loaded, and it will automatically return to the initial position after the loading is completed. The structure is simple and convenient; the stopper 33 is a mechanism for adjusting the alignment of the negative pressure suction nozzle and the injection port. An adjustment block 34 is connected to one end of the stopper 33, and a slider adapter plate 35 is connected to the other end of the stopper 33. The adjustment block 34 is installed on the restraint tray body 1 to determine the position of the stopper 33. The adjustment block 34 has a waist hole design, which can be fine-tuned left and right according to the position of the battery injection port to achieve the purpose of accurate alignment of the negative pressure suction nozzle and the injection port. The restraint tray body 1 of the pool can be equipped with a limit screw on the adjustment block 34, and the position of the stop block 33 can be changed by adjusting the limit screw; the slider adapter plate 35 is connected to the first guide rail 15 of the restraint tray body 1 through the first slider 36, and the slider adapter plate 35 is provided with a second compression spring 37 and a module mounting plate 38, both of which are used to connect with the negative pressure module 2. The bottom end of the negative pressure module 2 is placed on the top of the second compression spring 37. With the help of the second compression spring 37's own pressure resistance characteristics, the negative pressure module 2 is kept at a certain distance from the restraint tray body 1, ensuring that the negative pressure module 2 is on the left There is no interference during right movement. When the tray needs to draw negative pressure in the formation equipment, it is only necessary to increase axial pressure on the top of the negative pressure module 2. The second compression spring 37 contracts to cause the negative pressure module 2 to press the battery in the restrained tray body 1. After removing the external force, the negative pressure module 2 returns to the initial position. The negative pressure module 2 is connected to the module mounting plate 38 using a slide rail design. The negative pressure module 2 includes a second slider 21. The negative pressure module 2 is fixedly connected to the module mounting plate 38. The second guide rails 22 are fixedly installed on both sides of the negative pressure module 2. The second slider 21 and the second guide rail 22 are slidably matched. The up and down movement of the negative pressure module 2 is achieved by the relative sliding between the second slider 21 and the second guide rail 22.

[0026] like Figure 4As shown, the follower device 4 includes a third slider 41, a third guide rail 42, a pad 43 and a connecting rod 44. The third slider 41 is fixedly connected to the pad 43, and is installed on the third guide rail 42 and can slide back and forth. The third guide rail 42 is fixedly installed on the negative pressure module 2, the pad 43 is fixedly connected to the nozzle rod guide sleeve, and the bottom end of the pad 43 is connected to the connecting rod 44. The connecting rod 44 is embedded in the slots of the middle layer 13 and the end layer 14. During the tray restraint process, the middle layer 13 and the end layer 14 are gradually tightened and the negative pressure cup 23 is driven to move accordingly through the connecting rod 44. The connection between the connecting rod 44 and the pad 43 adopts an adjustable design. The length of the connecting rod 44 is adjusted according to the battery model requirements, which has a compatible effect.

[0027] The working principle of this embodiment:

[0028] When the battery is loaded, the restraint tray body of the follower device 4 with the negative pressure cup 23 applies external force to the negative pressure module 2 with the help of the mechanical arm. At this time, the first compression spring 32 is compressed to store energy, and the negative pressure module 2 moves to the side to reserve enough loading space for the battery. When the battery loading is completed, the mechanical arm is disengaged, the first compression spring 32 is restored to its original state, and the negative pressure module 2 returns to the initial position, and then the restraint tray body 1 is tightened, and the negative pressure cup 23 moves with the movement of the layer plate with the help of the connecting rod 44. When the restraining action is completed, the negative pressure suction nozzle and the liquid filling port of the battery should correspond one by one. Finally, the restraint tray body 1 is transported to the inside of the formation equipment, and the formation press applies pressure to the top of the negative pressure module 2. At this time, the second compression spring 37 contracts, and the second guide rail 22 and the second slider 21 slide relative to each other. The negative pressure module 2 moves downward until it is completely pressed with the battery. At the same time, the air control valve 25 is docked with the press end. After all are pressed in place, the process of pumping negative pressure on the battery can begin.

[0029] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A restraint tray body with a negative pressure follower, characterized in that: The invention comprises a restraint tray body (1), a negative pressure module (2), a lifting mechanism (3) and a follower device (4), wherein the negative pressure module (2) is installed on the upper part of the restraint tray body (1) via the lifting mechanism (3), and the negative pressure module (2) is provided with a follower device (4), and the follower device (4) is connected to the restraint tray body (1).

2. The restraint tray body with a negative pressure follower according to claim 1, characterized in that: The restraint tray body (1) comprises a bottom plate (16), a front end plate (11) is fixedly provided at one end of the upper side of the bottom plate (16), and a rear end plate (12) is fixedly provided at the other end of the upper side of the bottom plate (16), an intermediate layer plate (13) is evenly fixedly provided at the middle position of the upper side of the bottom plate (16), an end layer plate (14) is fixedly provided at the upper side of the bottom plate (16) and close to the front end plate (11) and the rear end plate (12), a first guide rail (15) is installed on the top of the front end plate (11) and the rear end plate (12), the first guide rail (15) is connected to the lifting mechanism (3), and the top of the end layer plate (14) of the intermediate layer plate (13) is designed with a slot, and the slot is connected to the follower device (4).

3. The restraint tray body with a negative pressure follower according to claim 2, characterized in that: The negative pressure module (2) comprises a fixed bracket (26), on which a negative pressure cup (23) and a bus (24) are arranged, the negative pressure cup (23) and the bus (24) are connected by means of an air pipe staggered connection, the bus (24) is connected to an air control valve (25), and the conduction of the bus (24) is controlled by the air control valve (25), the air control valve (25) being provided with two flexible joints, one for opening and closing the positive pressure control air path, and the other for passing negative pressure.

4. The restraint tray body with a negative pressure follower according to claim 3, characterized in that: The lifting mechanism (3) includes a base (39), a guide rod (31) is provided on the base (39), and the guide rod (31) is placed parallel to the first guide rail (15) on the restraint tray body (1), and the two ends of the guide rod (31) are fixedly installed on the restraint tray body (1) through the base (39), and the guide rod (31) is provided with a first compression spring (32), and a stopper (33) is slidably connected to the guide rod (31), one end of the first compression spring (32) is connected to the stopper (33), and the other end of the first compression spring (32) is connected to the base (39), and one end of the stopper (33) is connected to an adjusting spring. The adjusting block (34) has a slider adapter plate (35) connected to the other end of the stop block (33). The adjusting block (34) is mounted on the restraining tray body (1) to determine the position of the stop block (33). The slider adapter plate (35) is connected to the first guide rail (15) of the restraining tray body (1) via the first slider (36). The slider adapter plate (35) is provided with a second compression spring (37) and a module mounting plate (38), both of which are used to connect with the negative pressure module (2). The bottom end of the negative pressure module (2) is placed on the top end of the second compression spring (37), and the negative pressure module (2) is connected to the module mounting plate (38) by a slide rail design.

5. The restraint tray body with a negative pressure follower according to claim 4, characterized in that: The negative pressure module (2) comprises a second slider (21), the negative pressure module (2) is fixedly connected to the module mounting plate (38), second guide rails (22) are fixedly mounted on both sides of the negative pressure module (2), and the second slider (21) and the second guide rail (22) are slidably matched.

6. The restraint tray body with a negative pressure follower according to claim 4, characterized in that: The adjusting block (34) has a waist hole design.

7. The restraint tray body with a negative pressure follower according to claim 2, characterized in that: The follower device (4) comprises a third slider (41), a third guide rail (42), a pad (43) and a connecting rod (44); the third slider (41) is fixedly connected to the pad (43) and is installed on the third guide rail (42) and can slide back and forth; the third guide rail (42) is fixedly installed on the negative pressure module (2); the pad (43) is fixedly connected to the nozzle rod guide sleeve; the bottom end of the pad (43) is connected to the connecting rod (44); the connecting rod (44) is embedded in the slots of the middle layer (13) and the end layer (14); the connection between the connecting rod (44) and the pad (43) is of adjustable design.

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