Battery cell polarity turnover mechanism

Abstract

The utility model discloses a battery cell polarity turnover mechanism which comprises a lifting mechanism, a rotating mechanism and a variable-pitch clamping mechanism, the lifting mechanism comprises a lifting fixing frame, a lifting plate and a lifting cylinder, the lifting cylinder is arranged on the upper side face of the lifting fixing frame, and a cylinder piston rod slides downwards to penetrate through the lifting fixing frame to be connected with the lifting plate. The rotating mechanism is arranged on the lower side of the lifting plate and comprises a rotating air cylinder, and the rotating air cylinder is fixedly installed on the lifting plate and used for driving the variable-pitch clamping mechanism to clamp the battery cells to turn over. The variable-pitch clamping mechanism comprises a clamping fixing plate, a two-way lead screw, a servo motor and two variable-pitch clamping jaw assemblies, the clamping fixing plate is fixedly connected with a rotating head of the rotating air cylinder, the two variable-pitch clamping jaw assemblies are connected with the clamping fixing plate through the two-way lead screw, the two-way lead screw is driven by the servo motor to rotate, and the two variable-pitch clamping jaw assemblies are connected with the clamping fixing plate through the two-way lead screw. And the two variable-pitch clamping jaw assemblies are driven to clamp or loosen the battery cell. According to the invention, clamping polarity overturning of battery cells of different specifications is realized.

Description

Technical Field

[0001] This utility model relates to the field of battery module packaging technology, specifically to a cell polarity reversal mechanism. Background Technology

[0002] Polarity reversal in the battery module PACK production line is a crucial step in ensuring the quality and safety of battery modules. During the production of battery module PACKs, the polarity of individual battery cells must be arranged according to design requirements. Therefore, existing module PACK production lines generally include a polarity reversal station equipped with a reversal mechanism. This mechanism controls the reversal and arrangement of battery cells, ensuring that the polarity of each battery cell meets design requirements. However, existing polarity reversal mechanisms lack height adjustment capabilities, and the clamping precision of the two jaws used to hold the battery cells is not high, resulting in poor adaptability to polarity reversal of battery cells of different sizes. Utility Model Content

[0003] To solve the above problems, this utility model provides a cell polarity reversal mechanism.

[0004] The technical solution adopted in this utility model is:

[0005] A cell polarity reversal mechanism includes a lifting mechanism, a rotating mechanism, and a variable-pitch clamping mechanism.

[0006] The lifting mechanism includes a lifting frame, a lifting plate, and a lifting cylinder. The lifting cylinder is located on the upper side of the lifting frame, and the cylinder piston rod slides downward through the lifting frame to connect to the lifting plate.

[0007] The rotating mechanism is located on the lower side of the lifting plate and includes a rotating cylinder. The rotating cylinder is fixedly installed on the lifting plate and is used to drive the variable pitch clamping mechanism to clamp and rotate the battery cell.

[0008] The variable pitch clamping mechanism includes a clamping plate, a bidirectional lead screw, a servo motor, and two variable pitch gripper assemblies. The clamping plate is fixedly connected to the rotating head of the rotary cylinder. The two variable pitch gripper assemblies are connected to the clamping plate through the bidirectional lead screw. The bidirectional lead screw is driven to rotate by the servo motor, which drives the two variable pitch gripper assemblies to clamp or release the battery cell.

[0009] Furthermore, the lifting mechanism also includes a floating joint and a first guide shaft; the piston rod of the lifting cylinder slides downward through the lifting fixed frame to connect to the floating joint, and the first guide shaft is slidably mounted on the lifting fixed frame through a linear bearing, and together with the floating joint, connects to the lifting plate.

[0010] Furthermore, multiple first guide shafts are provided, and the multiple first guide shafts are evenly distributed along the outer periphery of the lifting cylinder.

[0011] Furthermore, the rotating mechanism also includes a second guide shaft, a slip ring fixing plate, and an electric slip ring. The upper end of the second guide shaft is vertically fixed on the lifting plate, and its lower end is fixedly connected to the electric slip ring through the slip ring fixing plate. The electric slip ring is rotatably mounted on the rotating head and is used to connect the cylinder cable and the air pipe.

[0012] Furthermore, multiple second guide shafts are provided, and the multiple second guide shafts are evenly distributed along the outer periphery of the rotary cylinder.

[0013] Furthermore, the variable pitch clamping mechanism also includes a first linear slide rail and a left-right helical double screw arranged along the X-axis on the clamping fixing plate, and two first sliders that are slidably connected to the left and right sides of the first linear slide rail respectively; the double screw includes a left-right helical double screw and a left-right nut, the left nut is fixedly connected to the left first slider, the right nut is fixedly connected to the right first slider, and the two first sliders are fixedly connected to two variable pitch gripper assemblies respectively.

[0014] Furthermore, the variable pitch gripper assembly includes a gripper base, a second linear slide rail disposed on the gripper base along the X-axis direction, a second slider slidably connected to the second linear slide rail, a clamping plate fixedly connected to the second slider, and a slide cylinder for driving the clamping plate to move linearly along the second linear slide rail.

[0015] Furthermore, two through-beam sensors are installed on each of the two variable-pitch gripper assemblies, and the two through-beam sensors are used to sense the position of the chip.

[0016] The beneficial effects of this utility model are as follows: By setting up a lifting mechanism, a rotating mechanism, and a variable-pitch clamping mechanism, the lifting mechanism can drive the rotating mechanism and the variable-pitch clamping mechanism to perform lifting and lowering movements, thereby adjusting the distance between the battery cell and the variable-pitch clamping mechanism to accommodate battery cell flipping at different heights; the variable-pitch clamping mechanism, through a bidirectional lead screw, can realize the variable-pitch clamping or loosening of the battery cell by two variable-pitch gripper assemblies, thereby accommodating battery cell flipping at different widths. Therefore, this application achieves polarity reversal for battery cell clamping of different specifications. Attached Figure Description

[0017] Figure 1 This is a structural diagram of the cell polarity reversal mechanism of this application.

[0018] Figure 2 This is an installation structure diagram of the cell polarity reversal mechanism of this application. Detailed Implementation

[0019] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solution of this utility model will be clearly and completely described below in conjunction with the accompanying drawings and a preferred embodiment.

[0020] See Figure 1This application provides a cell polarity reversal mechanism 100, including a lifting mechanism 10, a rotating mechanism 20 and a variable pitch clamping mechanism 30.

[0021] The lifting mechanism 10 includes a lifting fixing frame 15, a lifting plate 16, a lifting cylinder 11, a floating joint 12, a linear bearing 13, and a first guide shaft 14. The lifting fixing frame 15 is used to fix the cell polarity reversing mechanism on the reversing station, such as... Figure 1 As shown, the lifting and fixing frame 15 is horizontally arranged. The lifting cylinder 11 is vertically arranged at the center of the upper side of the lifting and fixing frame. The cylinder piston rod slides downward through the lifting and fixing frame 15 and connects to the floating joint 12. The first guide shaft 14 is slidably mounted on the lifting and fixing frame 15 via a linear bearing 13. The lower ends of the floating joint 12 and the first guide shaft 14 are connected to the lifting plate 16. Preferably, there are two first guide shafts 14, which are symmetrically arranged on both sides of the lifting cylinder 11 to improve the lifting stability of the lifting plate. Alternatively, there can be three or more first guide shafts 14, evenly distributed along the outer periphery of the lifting cylinder 11.

[0022] The rotating mechanism 20 includes a rotating cylinder 21, a second guide shaft 22, a slip ring fixing plate 24, and an electric slip ring 23. The rotating cylinder 21 is fixedly installed on the lower side of the lifting plate, and its rotating head extends vertically downward to connect to the clamping device. The upper end of the second guide shaft 22 is vertically fixed to the lifting plate, and its lower end is fixedly connected to the electric slip ring 23 through the slip ring fixing plate 24. The electric slip ring 23 is rotatably mounted on the rotating head and is used to connect the cylinder cable and air pipe, preventing the cable and air pipe from tangling when the cylinder rotates. Preferably, there are two second guide shafts 22, symmetrically arranged on both sides of the rotating cylinder 21, to improve the stability of the electric slip ring 23. Alternatively, there can be three or more second guide shafts, evenly distributed along the outer periphery of the rotating cylinder 21.

[0023] Preferably, a limiting block (not shown in the figure) is provided on the rotating head. When the rotating cylinder rotates 180° clockwise or counterclockwise, the limiting block touches the second guide shaft 22 on the left or right side, thereby limiting the rotating cylinder.

[0024] The variable-pitch clamping mechanism 30 includes a clamping and fixing plate 37, a first linear slide rail 31 disposed on the clamping and fixing plate 37 along the X-axis, two first sliders 32 slidably connected to the left and right sides of the first linear slide rail 31 respectively, a left-hand and right-hand bidirectional screw 33 and a left-hand and right-hand nuts disposed on the clamping and fixing plate 37 along the X-axis, two variable-pitch gripper assemblies 36 fixedly connected to the two first sliders 32 respectively, and a servo motor 34 for driving the left-hand and right-hand bidirectional screw 33 to rotate; the left-hand nut is fixedly connected to the left first slider, and the right-hand nut is fixedly connected to the right first slider. The X-axis direction is... Figure 1 The left and right directions of the rotary cylinder 21 shown.

[0025] The clamping plate 37 is fixedly connected to the rotating head of the rotary cylinder 21 and is driven to rotate by the rotary cylinder 21. When the servo motor 34 drives the left and right rotating bidirectional screw 33 to rotate, the left and right rotating nuts drive the two variable pitch gripper assemblies 36 to move closer or further apart in a straight line along the first linear slide rail 31.

[0026] For safety reasons, a bellows cover can be installed on the outside of the left-hand and right-hand bidirectional screw 33, and the bellows cover can also protect the screw threads.

[0027] The variable pitch gripper assembly 36 includes a gripper 361, a second linear slide rail 362 disposed on the gripper 361 along the X-axis direction, a second slider 363 slidably connected to the second linear slide rail 362, a clamping plate 364 fixedly connected to the second slider 363, and a slide cylinder 365 that drives the clamping plate 364 to move linearly along the second linear slide rail 362.

[0028] Two slide cylinders 365 are respectively installed on two clamps 361 on the left and right sides, and the cylinder piston rods extend out to connect the two clamps 364.

[0029] In addition, to improve clamping efficiency and accuracy, it is preferable to set two through-beam sensors 40 on the two clamping plates 364 respectively, with the contacts of the two through-beam sensors 40 facing each other, for sensing the position of the battery cell.

[0030] The working principle of this application is:

[0031] See Figure 2 When there are two production lines, the two cell polarity reversing mechanisms 100 can be symmetrically installed on a welding frame, and the welding frame is installed on the reversing station; in the initial state, the two variable pitch gripper assemblies 36 are in a position far apart from each other;

[0032] 1. When cells with opposite polarity are transported to the flipping station, the through-beam sensor 40 senses the cell's position.

[0033] 2. The piston rod of the lifting cylinder 11 extends, and the lifting plate 16 drives the rotating mechanism 20 and the variable pitch clamping mechanism 30 to move downward, so that the two variable pitch clamping jaw assemblies 36 are located on both sides of the battery cell.

[0034] 3. The servo motor 34 drives the left-right rotating bidirectional screw 33 to rotate in the forward direction, causing the two variable-pitch gripper assemblies 36 to approach the battery cell. Then, the servo motor 34 stops moving, and the two slide cylinders 365 start, driving the two clamping plates 364 to move relative to each other to clamp the battery cell.

[0035] 4. The piston rod of the lifting cylinder 11 retracts, and the clamping plate 364 clamps the battery cell and rises.

[0036] 5. The rotary cylinder 21 starts, driving the clamping plate 364 to rotate the battery cell 180 degrees. The limit block on the cylinder rotating head touches the second guide shaft 22, and the rotary cylinder 21 stops moving.

[0037] 6. The piston rod of the lifting cylinder 11 extends, and the clamping plate 364 lowers the battery cell;

[0038] 7. The two slide cylinders start at 365, driving the two clamping plates to move in opposite directions at 364, releasing the battery cell;

[0039] 8. The servo motor 34 drives the left and right bidirectional screw 33 to rotate in the opposite direction, and the two variable pitch gripper assemblies 36 return to their initial positions.

[0040] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of the present utility model, and these improvements and modifications are also within the protection scope of the present utility model.

Claims

1. A cell polarity reversal mechanism, characterized in that, It includes a lifting mechanism (10), a rotating mechanism (20), and a variable pitch clamping mechanism (30); The lifting mechanism (10) includes a lifting fixed frame (15), a lifting plate (16) and a lifting cylinder (11). The lifting cylinder (11) is located on the upper side of the lifting fixed frame, and the cylinder piston rod slides down through the lifting fixed frame (15) to connect to the lifting plate (16). The rotating mechanism (20) is located on the lower side of the lifting plate (16) and includes a rotating cylinder (21). The rotating cylinder (21) is fixedly installed on the lifting plate (16) and is used to drive the variable pitch clamping mechanism (30) to clamp and flip the battery cell. The variable pitch clamping mechanism (30) includes a clamping fixing plate (37), a bidirectional lead screw, a servo motor (34), and two variable pitch gripper assemblies (36). The clamping fixing plate (37) is fixedly connected to the rotating head of the rotary cylinder (21). The two variable pitch gripper assemblies (36) are connected to the clamping fixing plate (37) through the bidirectional lead screw. The bidirectional lead screw is driven to rotate by the servo motor (34), which drives the two variable pitch gripper assemblies (36) to clamp or release the battery cell.

2. The mechanism of claim 1, wherein, The lifting mechanism (10) also includes a floating joint (12) and a first guide shaft (14); the piston rod of the lifting cylinder (11) slides down through the lifting fixed frame (15) to connect to the floating joint (12), and the first guide shaft (14) is slidably mounted on the lifting fixed frame (15) through a linear bearing (13), and together with the floating joint (12) connects to the lifting plate (16).

3. The mechanism of claim 2, wherein, Multiple first guide shafts (14) are provided, and the multiple first guide shafts (14) are evenly distributed along the outer periphery of the lifting cylinder (11).

4. The mechanism of claim 1, wherein, The rotating mechanism (20) also includes a second guide shaft (22), a slip ring fixing plate (24), and an electric slip ring (23). The upper end of the second guide shaft (22) is vertically fixed on the lifting plate (16), and its lower end is fixedly connected to the electric slip ring (23) through the slip ring fixing plate (24). The electric slip ring (23) is rotatably mounted on the rotating head and is used to connect the cylinder cable and the air pipe.

5. The mechanism of claim 4, wherein, Multiple second guide shafts (22) are provided, and the multiple second guide shafts (22) are evenly distributed along the outer periphery of the rotary cylinder (21).

6. The mechanism of claim 1, wherein, The variable pitch clamping mechanism (30) also includes a first linear slide rail (31) arranged on the clamping fixing plate (37) along the X-axis direction, and two first sliders (32) that are slidably connected to the left and right sides of the first linear slide rail (33) respectively. The bidirectional screw includes a left-right double-rotating screw (33) and a left-right rotating nut. The left-rotating nut is fixedly connected to the left first slider, and the right-rotating nut is fixedly connected to the right first slider. The two first sliders (32) are fixedly connected to two variable pitch gripper assemblies (36) respectively.

7. The mechanism of claim 1 or 6, wherein, The variable pitch gripper assembly (36) includes a gripper base (361), a second linear slide rail (362) disposed on the gripper base (361) along the X-axis direction, a second slider (363) slidably connected to the second linear slide rail (362), a clamping plate (364) fixedly connected to the second slider (363), and a slide cylinder (365) for driving the clamping plate (364) to move linearly along the second linear slide rail (362).

8. The mechanism of claim 1, wherein, Two variable distance clamping jaw assemblies (36) are respectively provided with two pair of sensors (40) for sensing the position of the chip.

Images