A four-side positioning mechanism for a battery cell

Abstract

The present invention relates to a four-side positioning mechanism for a battery cell, which is used for calibrating and positioning the two sides of the X direction and the two sides of the Y direction of the battery cell horizontally placed on the upper surface of a belt, and comprises a Y direction positioning component and an X direction positioning component, wherein the Y direction positioning component comprises two Y direction positioning blocks and a Y direction driving mechanism for driving the two Y direction positioning blocks to synchronously approach or move away from the two sides of the Y direction of the battery cell in a linear motion in the Y direction in a horizontal plane, and the X direction positioning component comprises two X direction positioning blocks and an X direction driving mechanism for driving the two X direction positioning blocks to synchronously approach or move away from the two sides of the X direction of the battery cell in a symmetrical arc motion or a symmetrical linear motion at an angle to each other in a vertical plane. The advantages are that the four positioning blocks can calibrate and position the four sides of the battery cell at the same time, and the positioning is more accurate, and the two X direction positioning blocks shrink in the X direction while rising and open in the X direction while falling, which saves time and has higher positioning efficiency; it is compatible with battery cells of various specifications, and has a simple structure and is easy to operate.

Description

Technical Field

[0001] The invention belongs to the field of solar cell positioning test, and in particular relates to a four-side positioning mechanism for a solar cell. Background Art

[0002] After the solar cell (hereinafter referred to as "cell") is manufactured, the power and conversion efficiency of the cell need to be sorted by IV test. In order to ensure that the cell is accurately transferred to the test position under the IV test simulator, the cell delivered from the previous process needs to be corrected and positioned to ensure that during the IV test of the cell, the probe power device is in accurate and fully stable contact with the grid lines on the front and back of the cell, so as to obtain accurate and reliable electrical performance parameters to measure the power level of the cell. There are two main structures of cell positioning mechanisms in the prior art, one is a single-sided cylinder to promote cell positioning, and the other is a correction and positioning mechanism driven by three sets of cylinders.

[0003] The positioning mechanism that uses a single-sided cylinder to push the battery edge to position the battery cell is used to calibrate and position the battery cell directly below the IV test simulator. The action process is that the battery cell is conveyed to the test position directly below the IV test simulator via a belt, and then the outermost cylinder pushes the battery cell for correction and positioning. Then the upper and lower test probes press the battery cell, and finally the IV test simulator tests the battery cell. In this series of action processes, the use of this battery cell positioning method will result in the battery cell being transported to the test position. After the IV test cannot be performed immediately, the battery cell needs to be corrected and aligned first, which increases the time of the entire test process, thereby affecting the production rhythm of the entire equipment. Since only a single-sided cylinder is set to push the battery cell to position, and there is no positioning along the direction of belt conveying; this mechanism is equipped with a fixed rib on the inside, A set of cylinders is installed on the outside to push the battery cells, so the battery cells conveyed from the previous process need to be positioned on the outside on the belt to ensure that the battery cells can be smoothly conveyed to the test position without hitting the inner fixed rib. However, due to other process reasons, the conveyor belt cannot be made very wide. Therefore, in actual situations, there will still be a large position deviation of individual battery cells on the belt line, which will cause the battery cells to hit the inner fixed rib during the process of being conveyed to the test position. The battery cells cannot enter the test position, causing equipment failure and shutdown. This mechanism causes the battery cells to be conveyed to the test position on the outside of the belt. In the process of positioning each battery cell by the positioning cylinder, the battery cell and the belt will have a large relative position change, and the corresponding dynamic friction between the battery cell and the belt is more, that is, the battery cell is also more damaged.

[0004] The basic structure and working principle of the correction and positioning mechanism driven by three sets of cylinders are as follows: one set of cylinders A is responsible for the alignment of the battery cell in the X-axis direction, one set of cylinders B is responsible for the correction of the battery cell in the Y-axis direction, and one set of cylinders C is responsible for the up and down movement of the X-axis mechanism to avoid the transmission of the battery cell on the conveyor line; the action process is that when the battery cell is conveyed to the position before the IV test via the belt, cylinder C lifts the cylinder A structure for the correction of the battery cell in the X-axis direction to a position slightly higher than the conveyor belt, and then cylinder A corrects the battery cell in the X-axis direction, and cylinder B corrects the battery cell in the Y-axis direction. After the battery cell is corrected, cylinder C lowers the cylinder A structure for the correction of the battery cell in the X-axis direction to a position lower than the conveyor belt. position, and then the belt line starts to transport the calibrated battery cell to the IV test position; in this mechanism, after the battery cell is calibrated in the XY direction, the conveyor line cannot immediately transport the battery cell to the IV test position. Cylinder A and cylinder B need to return to their original positions and leave contact with the edge of the battery cell, and then cylinder C lowers the cylinder A structure that has been corrected in the X-axis direction of the battery cell to a position lower than the conveyor belt before the conveyor belt can be started, which increases the cycle time of the correction and positioning link of a single battery cell, thereby affecting the production rhythm of the entire equipment; because the structure uses three sets of cylinder drives, the mechanism design is complex, there are more correction and positioning actions, there are more mechanism execution parts and electrical control components, and the cost is higher. Summary of the invention

[0005] The present invention provides a four-side positioning mechanism for a battery cell, aiming to overcome the shortcomings of a single-side cylinder-driven battery cell positioning mechanism and a three-set cylinder-driven correction positioning mechanism in the prior art, such as poor positioning effect, damage to the battery cell, influence on test efficiency or high cost.

[0006] The technical solution of the present invention to solve the above technical problems is as follows: a four-side positioning mechanism for a battery cell, used for calibrating and positioning the two sides of the X direction and the two sides of the Y direction of the battery cell horizontally placed on the upper surface of a belt, comprising a Y-direction positioning component and an X-direction positioning component, the Y-direction positioning component comprising two Y-direction positioning blocks and a Y-direction driving mechanism for driving the two Y-direction positioning blocks to synchronously approach or move away from the two sides of the Y direction of the battery cell in a linear motion along the Y direction in a horizontal plane, the X-direction positioning component comprising two X-direction positioning blocks and an X-direction driving mechanism for driving the two X-direction positioning blocks to synchronously approach or move away from the two sides of the X direction of the battery cell in a symmetrical circular arc motion or a symmetrical linear motion at an angle to each other in a vertical plane, when the two X-direction positioning blocks are away from the two sides of the X direction of the battery cell, the two X-direction positioning blocks are located below the belt.

[0007] Based on the above technical solution, the present invention can also be improved as follows.

[0008] Furthermore, the Y-axis driving mechanism includes a Y-axis cylinder group fixed on a top beam, the top beam is located above the belt, and two telescopic ends of the Y-axis cylinder group in opposite directions are respectively connected to the two Y-axis positioning blocks one by one through connecting rods.

[0009] The advantage of adopting the above further structural improvement is that the Y-direction cylinder group has two telescopic ends in opposite directions, which can ensure that the two Y-direction positioning blocks are synchronously driven to move toward or away from each other, so as to effectively adjust the position of the battery cell in the Y direction.

[0010] Furthermore, the connecting rod is provided with a Y-direction waist hole for fixing the corresponding Y-direction positioning block.

[0011] The advantage of adopting the above further structural improvement is that by providing the Y-axis waist hole, the fixed position of the Y-axis positioning block on the connecting rod can be appropriately adjusted to adapt to the positioning of battery cells of different specifications.

[0012] Furthermore, the Y-axis driving mechanism includes a servo motor fixed on the top beam and a synchronous belt transmission-connected to the output end of the servo motor. The top beam is located above the belt. Two connecting parts are fixed on the synchronous belt. The lower parts of the two connecting parts are connected one-to-one with the two Y-axis positioning blocks.

[0013] The advantage of adopting the above further structural improvement is that a servo motor is used instead of the Y-axis cylinder group. The servo motor is programmable and has a higher accuracy in adjusting the position of the Y-axis positioning block, which is beneficial to improving the automation and controllability of the positioning mechanism and the positioning accuracy.

[0014] Furthermore, the X-axis driving mechanism includes a vertical telescopic device, which is installed in a frame and the bottom of the frame is connected to the bottom beam below. The top of the frame is a rectangular frame, and a group of slide rails are symmetrically arranged on both sides of the rectangular frame in the X direction. The center lines of the two slide rails are in the same vertical plane and the two center lines intersect above the rectangular frame to form the angle. Slide blocks are slidably connected to the two slide rails, respectively, and the slide blocks have extensions extending upward. The upper ends of the two extensions are connected to the two X-axis positioning blocks one by one, and the slide blocks are connected to the corresponding A connecting rod parallel to the slide rail passes through and is fixedly connected, and a lug is vertically connected to one end of the slide rail away from the rectangular frame. A through hole is provided on the upper part of the lug for one end of the connecting rod to pass through and slideably fit. A return spring is sleeved on the rod section of the connecting rod between the lug and the slider, and the other end of the connecting rod is rotatably connected to a roller. The telescopic end of the vertical telescopic device faces upward and is fixedly connected to the bottom of an isosceles wedge with its tip facing upward. The isosceles wedge passes through the middle of the rectangular frame, and the rims of the two rollers are respectively pressed and abutted against the two inclined surfaces of the isosceles wedge.

[0015] The advantage of adopting the above-mentioned further structural improvement is that the telescopic end at the upper end of the vertical telescopic device is fixedly connected to the bottom of the isosceles wedge with the tip facing upward to drive it to rise or fall in the vertical direction, so that the slider can be driven to move up and down along the slide rail by a connecting rod with a roller. When the slider moves, its extension part and the X-axis positioning block fixed at the upper end of the extension part also move up and down along the slide rail. Because the slide rail is inclined (the rectangular frame is horizontally arranged, and the center lines of the two slide rails intersect at the upper part of the rectangular frame), when the X-axis positioning block moves up or down along the slide rail, it is displaced simultaneously in both the vertical direction and the horizontal direction (specifically the X-axis), so that the X-axis positioning block moves upward to above the belt and contracts in the X-axis to position the battery cell in the X-axis (during positioning adjustment), and it can also be realized that while opening the clamping positioning of the battery cell (possibly only resistance), the X-axis positioning block moves downward so that the belt starts to move the positioned battery cell to the test position and the next battery cell moves to the position to be positioned.

[0016] Furthermore, the X-axis positioning block is provided with an oblique waist hole for connecting with the upper end of the extension portion, and the long axis direction of the oblique waist hole is parallel to the center line direction of the slide rail.

[0017] The advantage of adopting the above further structural improvement is that it is easy to adjust the fixed position of the X-axis positioning block on the extension part to adapt to battery cells of different specifications.

[0018] Furthermore, the frame also includes a base plate and four vertical columns connecting the base plate and the rectangular frame. The bottom of the vertical telescopic device is fixed to the base plate. The base plate is connected to the bottom beam through two side plates with vertical waist holes. The base plate is also threaded with an adjustment screw for adjusting the distance between the base plate and the bottom beam.

[0019] The advantage of adopting the above-mentioned further structural improvement is that the bottom plate and the bottom beam are connected by side plates with vertical waist holes. Under the action of the adjusting screw, the bottom plate can be close to or away from the bottom plate along the side plates in the vertical direction. Without adjusting the fixed position of the X-axis positioning block in the extension part, the purpose of adapting to the positioning of battery cells of different specifications can be achieved by adjusting the distance between the bottom plate and the bottom beam.

[0020] Furthermore, both ends of the top beam and the bottom beam are fixedly connected via vertical plates.

[0021] The advantages of adopting the above further structural improvement are good integrity and simple structure.

[0022] Furthermore, the angle formed by the intersection of the center lines of a group of symmetrically arranged slide rails is 30-60 degrees.

[0023] The advantage of adopting the above further structural improvement is that, within the above angle range, the degree of inclination of the slide rail is more appropriate, which facilitates the selection of the isosceles wedge block and the vertical telescopic device.

[0024] Furthermore, the vertical telescopic device is a cylinder or an electric push rod.

[0025] The advantage of adopting the above further structural improvement is that both the cylinder and the electric push rod are relatively mature lifting and retracting devices, which are low in cost and easy to maintain and operate.

[0026] Compared with the prior art, the present invention has the following beneficial effects:

[0027] (1) It is provided with two Y-direction positioning blocks and two X-direction positioning blocks. The four positioning blocks can simultaneously calibrate and position the four sides of the battery, thereby ensuring that each battery cell is in the same position when it is conveyed to the test position (the battery cell is moved to the test position along with the belt after being positioned and adjusted by the four-side positioning mechanism). The two X-direction positioning blocks rise to a position above the belt surface and also retract in the X direction to calibrate and position the battery cell in the X direction. After calibrating the battery cell, the two X-direction positioning blocks are opened synchronously and dropped below the belt at the same time. Compared with the method of opening first and then dropping below the belt in the prior art, the present invention obviously saves time and has higher positioning efficiency.

[0028] (2) The four positioning blocks are provided with corresponding waist-shaped holes (Y-axis waist holes or oblique waist holes) at the corresponding installation positions, and the installation positions of the four positioning blocks can be adjusted appropriately, thereby effectively accommodating the four-side positioning of battery cells of various sizes and specifications;

[0029] (3) The power components of the Y-axis drive mechanism and the X-axis drive mechanism can be configured as servo motors (electric push rods), and the parameter configuration corresponding to the battery cell specifications can be set in advance in the encoder of the servo motor. In actual testing, when the battery cell size is frequently switched, it is only necessary to switch to the corresponding specification on the control panel to accurately position the corresponding battery cell, without adjusting the hardware position such as the positioning block, which effectively saves the adjustment time of the hardware when the battery cell specifications change, reduces the labor intensity of the operator, and improves production efficiency;

[0030] (4) The structure is simple, the operation is convenient, and the manufacturing and maintenance costs are relatively low. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 A schematic isometric view of a four-side positioning mechanism for a battery cell provided by the present invention when positioning a battery cell on a belt;

[0032] Figure 2 for Figure 1 The front view of the four-side positioning mechanism of the battery cell shown;

[0033] Figure 3 for Figure 1 A top view of the four-side positioning mechanism of the battery cell shown;

[0034] Figure 4 for Figure 3 The cross-sectional view of the four-side positioning mechanism of the battery cell along CC;

[0035] Figure 5 This is an axonometric diagram of a four-side positioning mechanism for a battery cell provided by the present invention, wherein the Y-direction driving mechanism is a Y-direction cylinder group;

[0036] Figure 6 for Figure 5 The front view of the four-side positioning mechanism of the battery cell shown;

[0037] Figure 7 for Figure 5 A top view of the four-side positioning mechanism of the battery cell shown;

[0038] Figure 8 This is an axonometric diagram of a four-side positioning mechanism for a battery cell provided by the present invention, wherein the Y-axis driving mechanism includes a servo motor and a synchronous belt, etc.;

[0039] Fig. 9 for Figure 8 The front view of the four-side positioning mechanism of the battery cell shown;

[0040] Fig.10 for Figure 8 A top view of the four-side positioning mechanism of the battery cell is shown.

[0041] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0042] 1. Belt; 2. Battery cell; 3. Y-axis positioning block; 4. Y-axis driving mechanism; 5. X-axis positioning block; 6. X-axis driving mechanism; 7. Top beam; 8. Y-axis cylinder group; 9. Connecting rod; 10. Y-axis waist hole; 11. Servo motor; 12. Synchronous belt; 13. Connecting piece; 14. Vertical telescopic device; 15. Bottom beam; 16. Rectangular frame; 17. Slide rail; 18. Slider; 19. Extension; 20. Connecting rod; 21. Lug; 22. Reset spring; 23. Roller; 24. Isosceles wedge; 25. Oblique waist hole; 26. Bottom plate; 27. Vertical column; 28. Side plate; 29. ​​Adjusting screw. DETAILED DESCRIPTION

[0043] The principles and features of the present invention are described below in conjunction with the accompanying drawings and specific embodiments. The examples given are only used to explain the present invention and are not used to limit the scope of the present invention.

[0044] like Figures 1 to 10As shown, the present invention provides a battery cell four-side positioning mechanism, which is used for calibrating and positioning the battery cell 2 horizontally placed on the upper surface of the belt 1 on both sides of the X direction and the Y direction, and includes a Y-direction positioning component and an X-direction positioning component, the Y-direction positioning component includes two Y-direction positioning blocks 3 and a Y-direction driving mechanism 4 for driving the two Y-direction positioning blocks 3 to synchronously approach or move away from the two sides of the Y direction of the battery cell 2 in a linear motion along the Y direction in a horizontal plane, the X-direction positioning component includes two X-direction positioning blocks 5 and an X-direction driving mechanism 6 for driving the two X-direction positioning blocks 5 to synchronously approach or move away from the two sides of the X direction of the battery cell 2 in a symmetrical arc motion or a symmetrical linear motion at an angle to each other in a vertical plane, when the two X-direction positioning blocks 5 are away from the two sides of the X direction of the battery cell 2, the two X-direction positioning blocks 5 are located below the belt 1.

[0045] Example 1

[0046] The Y-direction driving mechanism 4 includes a Y-direction cylinder group 8 fixed on a top beam 7, the top beam 7 is located above the belt 1, and the two telescopic ends of the Y-direction cylinder group 8 in opposite directions are respectively connected to the two Y-direction positioning blocks 3 through connecting rods 9, and the connecting rods 9 are provided with Y-direction waist holes 10 for fixing the corresponding Y-direction positioning blocks 3. Figures 1 to 7 shown.

[0047] Example 2

[0048] The Y-direction driving mechanism 4 includes a servo motor 11 fixed on the top beam 7 and a synchronous belt 12 connected to the output end of the servo motor 11. The top beam 7 is located above the belt 1. Two connecting members 13 are fixed on the synchronous belt 12. The lower parts of the two connecting members 13 are connected to the two Y-direction positioning blocks 3 in a one-to-one correspondence. Figures 8 to 10 As shown, servo motor, synchronous pulley, synchronous belt and connecting parts are used to replace Figures 1 to 7 The Y-direction cylinder group 8 and the connecting rod 9 in the device shown. The advantage of using a servo motor is that the positioning is more accurate and the controllability is stronger.

[0049] Example 3

[0050] like Figures 1 to 10As shown, the X-axis driving mechanism 6 includes a vertical telescopic device 14, the vertical telescopic device 14 is installed in a frame and the bottom of the frame is connected to the bottom beam 15 below, the top of the frame is a rectangular frame 16, and a group of slide rails 17 are symmetrically provided on both sides of the rectangular frame 16 in the X direction, the center lines of the two slide rails 17 are in the same vertical plane and the two center lines intersect above the rectangular frame 16 to form the angle, and the two slide rails 17 are respectively slidably connected with sliders 18, and the sliders 18 have extensions 19 extending upward, and the upper ends of the two extensions 19 are connected to the two X-axis positioning blocks 5 one by one, and the sliders 18 are penetrated by a connecting rod 20 parallel to the corresponding slide rails 17. Fixedly connected, the end of the slide rail 17 away from the rectangular frame 16 is vertically connected with a lug 21, the upper part of the lug 21 is provided with a through hole for one end of the connecting rod 20 to pass through and slide with, the connecting rod 20 is sleeved with a return spring 22 on the rod section between the lug 21 and the slider 18, and the other end of the connecting rod 20 is rotatably connected with a roller 23, the telescopic end of the vertical telescopic device 14 faces upward and is fixedly connected to the bottom of an isosceles wedge 24 with the tip facing upward, the isosceles wedge 24 passes through the middle of the rectangular frame 16, and the rims of the two rollers 23 are respectively pressed and abutted against the two inclined surfaces of the isosceles wedge 24, wherein the vertical telescopic device 14 is a cylinder or an electric push rod.

[0051] Example 4

[0052] The four-side positioning mechanism of the battery cell in this embodiment has the Y-direction driving mechanism of embodiment 1 and the X-direction driving mechanism of embodiment 3.

[0053] Example 5

[0054] The four-side positioning mechanism of the battery sheet in this embodiment has the Y-direction drive mechanism of embodiment 2 and the X-direction drive mechanism of embodiment 3. The power components of the Y-direction drive mechanism and the X-direction drive mechanism are both servo motors with better controllability and programmable control (the latter is an electric push rod with a servo motor).

[0055] It can be understood that in any one of Embodiments 3 to 5, there may be further specific options as follows.

[0056] Specifically, the X-axis positioning block 5 is provided with an oblique waist hole 25 for connecting with the upper end of the extension portion 19 , and the long axis direction of the oblique waist hole 25 is parallel to the center line direction of the slide rail 17 .

[0057] Specifically, the frame also includes a bottom plate 26 and four vertical columns 27 connecting the bottom plate 26 and the rectangular frame 16. The bottom of the vertical telescopic device 14 is fixed on the bottom plate 26. The bottom plate 26 is connected to the bottom beam 15 through two side plates 28 with vertical waist holes. The bottom plate 26 is also threaded with an adjusting screw 29 for adjusting the distance between the bottom plate 26 and the bottom beam 15.

[0058] Specifically, the top beam 7 and the two ends of the bottom beam 15 are fixedly connected via vertical plates.

[0059] Specifically, the angle formed by the intersection of the center lines of a group of symmetrically arranged slide rails 17 is 30-60 degrees. Figure 2 and Figure 4 As shown, the included angle between each slide rail and the corresponding side surface of the rectangular frame is 60 degrees, and the center lines of the two slide rails intersect above the rectangular frame, and the included acute angle is 60 degrees (the obtuse angle is 120 degrees).

[0060] It should be noted that the X-direction drive mechanisms in the above-mentioned embodiments 3 to 5 are all capable of making the two X-direction positioning blocks move symmetrically in a vertical plane and at an angle to each other to synchronously approach or move away from the two sides of the battery cell 2X to push the battery cell for positioning. In other words, the two X-direction positioning blocks move linearly along the central axis of the corresponding slide rail under the action of the X-direction drive mechanism. Those skilled in the art can also easily think of an X-direction drive mechanism that can make the two X-direction positioning blocks move symmetrically in a vertical plane and synchronously approach or move away from the two sides of the battery cell 2X to push the battery cell for positioning, such as a scissor mechanism similar to a scissor lift mechanism, where the upper ends of the two hinged support rods fix the X-direction positioning blocks.

[0061] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A battery cell four-side positioning mechanism, used for calibrating and positioning a battery cell (2) horizontally placed on the upper surface of a belt (1) on both sides of the X direction and the Y direction, characterized in that: The invention comprises a Y-direction positioning component and an X-direction positioning component, wherein the Y-direction positioning component comprises two Y-direction positioning blocks (3) and a Y-direction driving mechanism (4) for driving the two Y-direction positioning blocks (3) to synchronously approach or move away from the two Y-direction side edges of the battery cell (2) in a linear motion along the Y direction in a horizontal plane, and the X-direction positioning component comprises two X-direction positioning blocks (5) and an X-direction driving mechanism (6) for driving the two X-direction positioning blocks (5) to synchronously approach or move away from the two X-direction side edges of the battery cell (2) in a symmetrical circular arc motion or a symmetrical linear motion at an angle to each other in a vertical plane, and when the two X-direction positioning blocks (5) are away from the two X-direction side edges of the battery cell (2), the two X-direction positioning blocks (5) are located below the belt (1).

2. A battery cell four-side positioning mechanism according to claim 1, characterized in that: The Y-direction driving mechanism (4) comprises a Y-direction cylinder group (8) fixed on a top beam (7), the top beam (7) being located above the belt (1), and two telescopic ends of the Y-direction cylinder group (8) in opposite directions being connected to the two Y-direction positioning blocks (3) in a one-to-one correspondence via connecting rods (9) respectively.

3. A four-side positioning mechanism for a battery cell according to claim 2, characterized in that: The connecting rod (9) is provided with a Y-direction waist hole (10) for fixing the corresponding Y-direction positioning block (3).

4. A battery cell four-side positioning mechanism according to claim 1, characterized in that: The Y-direction driving mechanism (4) comprises a servo motor (11) fixed on a top beam (7) and a synchronous belt (12) drivingly connected to an output end of the servo motor (11); the top beam (7) is located above the belt (1); two connecting members (13) are fixed on the synchronous belt (12); the lower parts of the two connecting members (13) are connected to the two Y-direction positioning blocks (3) in a one-to-one correspondence.

5. A battery cell four-side positioning mechanism according to any one of claims 2 to 4, characterized in that: The X-axis driving mechanism (6) comprises a vertical telescopic device (14), the vertical telescopic device (14) is installed in a frame and the bottom of the frame is connected to the bottom beam (15) below, the top of the frame is a rectangular frame (16), and a group of slide rails (17) are symmetrically provided on both sides of the rectangular frame (16) in the X direction, the center lines of the two slide rails (17) are in the same vertical plane and the two center lines intersect above the rectangular frame (16) to form the angle, and the two slide rails (17) are respectively slidably connected to the sliders (18), and the sliders (18) have extensions (19) extending upward, and the upper ends of the two extensions (19) are connected to the two X-axis positioning blocks (5) in a one-to-one correspondence, and the sliders (18) are parallel to the corresponding slide rails (17). A connecting rod (20) passes through and is fixedly connected to the slide rail (17); one end of the slide rail (17) away from the rectangular frame (16) is vertically connected to a lug (21); a through hole is provided on the upper part of the lug (21) for one end of the connecting rod (20) to pass through and slide with; a return spring (22) is sleeved on the rod section of the connecting rod (20) located between the lug (21) and the slider (18); the other end of the connecting rod (20) is rotatably connected to a roller (23); the telescopic end of the vertical telescopic device (14) faces upward and is fixedly connected to the bottom of an isosceles wedge (24) with its tip facing upward; the isosceles wedge (24) passes through the middle of the rectangular frame (16); the rims of the two rollers (23) are respectively pressed against the two inclined surfaces of the isosceles wedge (24) in correspondence.

6. A battery cell four-side positioning mechanism according to claim 5, characterized in that: The X-axis positioning block (5) is provided with an oblique waist hole (25) for connecting to the upper end of the extension portion (19), and the long axis direction of the oblique waist hole (25) is parallel to the center line direction of the slide rail (17).

7. A four-side positioning mechanism for a battery cell according to claim 5, characterized in that: The frame further comprises a bottom plate (26) and four vertical columns (27) connecting the bottom plate (26) and the rectangular frame (16); the bottom of the vertical telescopic device (14) is fixed on the bottom plate (26); the bottom plate (26) is connected to the bottom beam (15) via two side plates (28) with vertical waist holes; and an adjusting screw (29) for adjusting the distance between the bottom plate (26) and the bottom beam (15) is also threadedly connected to the bottom plate (26).

8. A battery cell four-side positioning mechanism according to claim 5, characterized in that: The top beam (7) and the bottom beam (15) are fixedly connected at both ends via vertical plates.

9. A battery cell four-side positioning mechanism according to claim 5, characterized in that: The angle formed by the intersection of the center lines of a group of symmetrically arranged slide rails (17) is 30-60 degrees.

10. The four-side positioning mechanism of a battery cell according to claim 5, characterized in that: The vertical telescopic device (14) is a cylinder or an electric push rod.

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