Power battery stacking device and method

Abstract

The present invention relates to a power battery stacking device and method, comprising a bracket and a battery discharge positioning device. The battery discharge positioning device is positioned above the center of the bracket, and the bracket has a channel in the center for the battery discharge positioning device to pass through. Cell support plates are fixedly mounted on both sides of the battery discharge positioning device. The power battery stacking device and method designed by the present invention can facilitate the automatic stacking of cells during the production process of power battery modules, preventing cell stacking from shifting without affecting side panel assembly. By clamping and positioning the stacked cells, stacking accuracy can be improved.

Description

Technical Field

[0001] The present invention relates to a process for stacking automotive power battery modules, and in particular to a power battery stacking device and method. Background Art

[0002] With the rapid development of the new energy power battery industry, power battery production processes are becoming increasingly advanced and sophisticated, placing higher demands on the lithium battery industry's automated production technology. During the power battery module stacking process, cells are automatically stacked, and this can cause cell stacking to shift, impacting side panel assembly, BUSBAR laser welding, and PACK line production. Therefore, a system that can automatically position module stacking and prevent misalignment has become a technical challenge. Summary of the Invention

[0003] In order to solve the problem that the existing battery cell stacking offset affects the side panel assembly, the cost is high and it is not suitable for the PACK line production line.

[0004] The technical solutions of the present invention are as follows:

[0005] A power battery stacking device is characterized in that it includes a bracket, on which a clamping finger cylinder is fixedly installed, the telescopic end of the clamping finger cylinder is fixedly installed with a pair of lateral clamping plates located on both sides of the bracket, and the inner walls of the lateral clamping plates are fixedly installed with clamping blocks, and the end of the bracket away from the servo electric cylinder is fixedly installed with a rotating downward pressing cylinder, and a pressing block is fixedly installed on the rotating downward pressing cylinder.

[0006] Preferably, a servo electric cylinder and a battery discharge positioning device driven to move by the servo electric cylinder are fixedly installed above the bracket. The battery discharge positioning device is arranged above the middle part of the bracket, and the middle part of the bracket has a groove for the battery discharge positioning device to pass through.

[0007] Preferably, the battery discharge positioning device includes a moving part and a fixed base plate located below the moving part, a horizontal driving cylinder D is fixedly installed at the rear end of the fixed base plate, the output end of the driving cylinder D is fixedly connected to the moving part, and the fixed base plate is fixedly connected to the driving end of the servo electric cylinder.

[0008] Preferably, the bracket is fixedly mounted on a partitioned rotating fence, the partitioned rotating fence is divided into an A-side fence and a B-side fence, and a partitioned fixed fence is fixedly mounted below the partitioned rotating fence.

[0009] Preferably, a vertical driving cylinder C is fixedly installed on the movable part, and the driving end of the driving cylinder C is fixedly connected to the lifting platform; a driving finger cylinder B is fixedly installed on the front side of the lifting platform, and the telescopic end of the driving finger cylinder B is fixedly connected to a lateral clamp, and the lateral clamp is a pair of L-shaped fixing plates.

[0010] Preferably, a guide rail A is fixedly installed above the driving finger cylinder F, and a corresponding slider A is slidably connected to the guide rail A. A guide rail B is fixedly installed on the bottom support plate, and a corresponding slider B is slidably connected above the guide rail B. The slider A and slider B are respectively fixedly connected to the L-shaped clamping plate.

[0011] Preferably, a mounting frame is fixedly mounted on the rear substrate, and a bottom support plate is fixedly mounted above the mounting frame.

[0012] Preferably, the moving member includes a vertical base plate, a pressing plate H is vertically provided at the front end of the vertical base plate, and a spring connecting member is installed between the pressing plate H and the vertical base plate.

[0013] Preferably, a guide rail A is fixedly installed above the driving finger cylinder F, and a corresponding slider A is slidably connected to the guide rail A. A guide rail B is fixedly installed on the bottom support plate, and a corresponding slider B is slidably connected above the guide rail B. The slider A and slider B are respectively fixedly connected to the L-shaped clamping plate.

[0014] Preferably, the lifting platform includes a cross bar fixedly connected to the output end of the driving cylinder C, and one end of the cross bar away from the driving cylinder C is fixedly connected to a fixed plate, and the driving finger cylinder B is fixedly installed on the fixed plate.

[0015] A power battery stacking device and method, using the power battery stacking device described above, the specific steps are as follows:

[0016] (1) The driving cylinder A drives the L-shaped support plate to lift up, and the battery cell is placed on the upper surface of the L-shaped support plate.

[0017] (2) The finger cylinder F drives the slider A and the slider B, and the L-shaped clamping plates move toward each other to position and guide the stacked cells.

[0018] (3) The pressure plate H is axially compressed, and the clamping cylinder A and the clamping cylinder B control the lateral clamping plates to clamp, and the battery cells are stacked.

[0019] (4) The pressing plate H pushes the battery cell in to keep the stacked battery cell stable, and drives the cylinder C to pull down so that the bottom of the battery cell fits into the bottom of the stack.

[0020] (5) The rotating downward pressure cylinder clamping is used as a reference, and the rotating downward pressure cylinder drives the clamping block to rotate and move up and down.

[0021] (6) The fixed base plate is driven by a servo electric cylinder to move as a whole on the bracket, and is used to transport the battery module from the receiving end to the front side of the stacked battery modules.

[0022] (7) A method of discharging the material by a manipulator is adopted. After the material is discharged, the driving cylinder C is started, and the driving cylinder C drives the cross bar and the fixed plate fixedly connected to the cross bar to move downward, driving the lifting platform to rise.

[0023] (8) The driving finger cylinder B drives the side clamp to clamp the battery cell. The fixed base plate is driven by the driving device to approach the placement position.

[0024] (9) The driving cylinder A drives the L-shaped support plate to retract, and the driving cylinder C drives the cross bar and the fixed plate fixedly connected to the cross bar to move downward, driving the lifting platform to descend so that the battery cell falls on the upper surface of the bracket.

[0025] (10) The pneumatic cylinder D drives the moving part to push the battery cell, and the driving finger cylinder B drives the lateral clamp to release the battery cell.

[0026] (11) The driving finger cylinder B drives the side clamp to release the battery cell and then drives the cylinder D

[0027] The elastic force of the spring connector acts on the battery cells to ensure tight stacking and complete the stacking operation.

[0028] Compared with the prior art, the present invention has the following beneficial effects:

[0029] The battery module stacking equipment designed in the present invention can automatically stack the battery cells during the production process of power battery module stacking, prevent the battery cell stacking from shifting, and does not affect the side panel assembly. By clamping and positioning the stacked battery cells, the stacking accuracy can be improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 This is a schematic structural diagram of a battery discharge positioning device according to an embodiment of the present invention;

[0031] Figure 2 This is a rear view of the overall structure of an embodiment of the present invention;

[0032] Figure 3 This is a partial schematic diagram of an embodiment of the present invention.

[0033] Figure 4 This is a schematic diagram of the upper portion of the overall structure of the device after installation according to an embodiment of the present invention;

[0034] Figure 5 This is a schematic diagram of the overall structure of the lateral clamping plate according to an embodiment of the present invention;

[0035] Figure 6 Schematic diagram of the overall structure of the spinning device according to an embodiment of the present invention;

[0036] Figure 7 This is a front view of the overall structure of the panel according to an embodiment of the present invention;

[0037] Figure 8This is a side view of the overall structure of the panel according to an embodiment of the present invention;

[0038] Figure 9 This is a schematic diagram of the lower portion of the overall structure of the device after installation according to an embodiment of the present invention;

[0039] Figure 10 This is a schematic diagram of the overall structure of the device after installation according to an embodiment of the present invention;

[0040] In the figure: 1-moving part, 2-fixed base plate, 3-driving cylinder D, 4-pressing plate H, 5-spring connecting part, 6-driving cylinder C, 7-lifting platform, 8-driving finger cylinder B, 9-lateral clamping claw, 10-L-shaped fixed plate, 11-rear base plate, 12-driving cylinder A, 13-mounting frame, 14-bottom supporting plate, 15-cross bar, 16-fixed plate, 18-driving finger cylinder F, 19-guide rail A, 20-slider A, 21-guide rail B, 22-slider B, 23 -L-shaped clamping plate, 24-axial connecting part, 25-L-shaped surface support plate, 26-bracket, 27-battery discharge positioning device, 28-groove, 29-battery cell support plate, 30-lateral clamping plate, 31-clamping finger cylinder, 33-clamping block, 34-servo electric cylinder, 35-rotary downward pressure cylinder, 36-pressure block, 37-speed control valve, 38-partitioned rotary fence, 39-A surface fence, 40-B surface fence, 41-partitioned fixed fence, 42-spinning positioning mechanism. DETAILED DESCRIPTION

[0041] The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.

[0042] See also Figure 1-10 , a power battery stacking device, including a bracket 26, a clamping finger cylinder 31 is fixedly installed on the bracket 26, the telescopic end of the clamping finger cylinder 31 is fixedly installed with a pair of lateral clamping plates 30 located on both sides of the bracket 26, and a clamping block 33 is fixedly installed on the inner wall of the lateral clamping plate 30, a servo electric cylinder 34 and a battery discharge positioning device 27 driven by the servo electric cylinder 34 are fixedly installed above the bracket 26, and a rotary downward pressing cylinder 35 is fixedly installed on the end of the bracket 26 away from the servo electric cylinder 34, and a pressing block 36 is fixedly installed on the rotary downward pressing cylinder 35.

[0043] In one embodiment of the present invention, the battery discharge positioning device 27 is arranged above the middle part of the bracket 26. The middle part of the bracket 26 has a groove 28 for the battery discharge positioning device 27 to pass through. The bracket 26 is fixedly installed on the partitioned rotating fence 38. The partitioned rotating fence 38 is divided into an A-side fence 39 and a B-side fence 40. A partitioned fixed fence 41 is fixedly installed below the partitioned rotating fence 38.

[0044] During operation, the servo electric cylinder 34 drives the battery discharge positioning device 27 to move along the groove 28. When the first group of battery cells is stacked in place, it is clamped by rotating the downward pressure cylinder 35 as a reference to complete one stacking. When one group of battery cells is stacked, the number of stacking is determined in sequence according to the length of the module. The pressure plate H4 is axially pressed, and the clamping cylinder A31 and the clamping cylinder B32 control the lateral clamping plate 30 to clamp. The battery cells are stacked, and the stacking surface A39 and the stacking surface B40 do not interfere with each other. The fences on the left and right sides separate the areas, and the front and back areas do not interfere with each other.

[0045] In one embodiment of the present invention, the battery discharge positioning device 27 includes a moving part 1 and a fixed base plate 2 located at the lower part of the moving part 1, the rear end of the fixed base plate 2 is fixedly installed with a horizontal driving cylinder D3, the output end of the driving cylinder D3 is fixedly connected to the moving part 1, and the moving part 1 is fixedly installed with a vertical driving cylinder C6, and the driving end of the driving cylinder C6 is fixedly connected to the lifting platform 7; the front side of the lifting platform 7 is fixedly installed with a driving finger cylinder B8, and the telescopic end of the driving finger cylinder B8 is fixedly connected with a lateral clamp 9, and the lateral clamp 9 is a pair of L-shaped fixed plates 10.

[0046] An axial connecting member 24 is fixedly installed below the movable member 1, a rear base plate 11 is fixedly connected to the axial connecting member 24, a driving cylinder A12 is fixedly installed on the front side of the rear base plate 11, an L-shaped support plate 25 is fixedly connected to the driving cylinder A12, a mounting frame 13 is fixedly installed on the rear base plate 11, and a bottom support plate 14 is fixedly installed above the mounting frame 13.

[0047] The lifting platform 7 includes a cross bar 15 fixedly connected to the output end of the driving cylinder C6. The end of the cross bar 15 away from the driving cylinder C6 is fixedly connected to a fixing plate 16, and the driving finger cylinder B8 is fixedly installed on the fixing plate 16.

[0048] During operation, the battery discharge positioning device 27 is located on the front side above the middle of the bracket 26 used to stack battery modules. The middle of the bracket 26 has a groove 28 for the battery discharge positioning device 27 to pass through. The support plates of the bracket 26 supporting the battery cells are located on both sides of the battery discharge positioning device 27. The fixed base plate 2 is driven by the servo electric cylinder 34 to move as a whole on the bracket 26, and is used to transport the battery module 29 from the receiving end to the front side of the stacked battery modules.

[0049] The driving cylinder A12 drives the L-shaped support plate 25 to lift, and the battery cells are placed on the upper surface of the L-shaped support plate 25. The battery cells can be unloaded by a robot. After unloading is completed, the driving cylinder C6 is started, and the driving cylinder C6 drives the crossbar 15 and the fixed plate 16 fixedly connected to the crossbar 15 to move downward to drive the lifting platform 7 to lift, and the driving finger cylinder B8 drives the lateral clamp 9 to clamp the battery cells. After the fixed base plate 2 is driven by the driving device to approach the placement position, the driving cylinder A12 drives the L-shaped support plate 25 to retract, and the driving cylinder C6 drives the crossbar 15 and the fixed plate 16 fixedly connected to the crossbar 15 to move downward to drive the lifting platform 7 to descend so that the battery cells fall on the upper surface of the bracket 26. Then, the driving cylinder D3 drives the moving part 11 to push the battery cells, and the driving finger cylinder B8 drives the lateral clamp 9 to release the battery cells.

[0050] In one embodiment of the present invention, the movable member 1 comprises a vertical base plate with a pressure plate H4 positioned vertically at its front end. A spring connector 5 is installed between the pressure plate H4 and the base plate, providing both axial compression and cell protection. After the driving finger cylinder B8 drives the lateral gripper 9 to release the cell, the elastic force of the driving cylinder D3 and the spring connector 5 acts on the cells, ensuring a tight stack.

[0051] In one embodiment of the present invention, a driving finger cylinder F18 is fixedly installed above the bottom support plate 14, and the driving finger cylinder F18 is located in front of the driving cylinder A12. The driving end of the driving finger cylinder F18 is fixedly connected to a pair of vertically arranged L-shaped clamping plates 23. A guide rail A19 is fixedly installed above the driving finger cylinder F18, and a corresponding slider A20 is slidably connected to the guide rail A19. A guide rail B21 is fixedly installed on the bottom support plate 14, and a corresponding slider B22 is slidably connected above the guide rail B21. The slider A20 and the slider B22 are respectively fixedly connected to the L-shaped clamping plate 23, and the pair of L-shaped clamping plates 23 can move left and right relative to each other to clamp the battery cells stacked on the bracket 26.

[0052] During operation, the finger cylinder F18 is driven to drive the slider A20 and the slider B22, so that the slider A20 and the slider B22 move on the guide rail A19 and the guide rail B21. A pair of L-shaped clamping plates 23 fixedly connected above the slider A20 and the slider B22 can move toward each other to position and guide the stacked battery cells, so as to keep the battery cell stack in a compressed state with a certain pressure after the stacking is completed. In this way, when the pressure plate H4 is pushed into the battery cell, the stability of the stacked battery cells can be maintained, and the cylinder C is driven to pull down, and the bottom of the battery cell is fitted with the bottom of the stack, relying on the rotating downward pressure cylinder 35 for clamping as a reference. The rotating downward pressure cylinder 35 drives the clamping block 36 to rotate and move up and down. At this time, the rotation of the clamping block 36 is set to 90°. The specific reference model is: AirTac rotary downward pressure angle cylinder ACKL25X90.

[0053] The driving finger cylinder B8 and the driving finger cylinder F18 are closed, the side clamping claws 9 and the L-shaped clamping plate 23 are loosened, the driving cylinder A12 is closed, the L-shaped surface support plate 25 is lifted, and the driving cylinder D3 drives the moving part 1 to retract, completing one stacking.

[0054] The specific steps and embodiments are as follows:

[0055] (1) The driving cylinder A drives the L-shaped support plate to lift up, and the battery cells are placed on the upper surface of the L-shaped support plate. (2) The driving finger cylinder F drives the slider A and slider B, and the L-shaped clamping plates move toward each other to position and guide the stacked battery cells.

[0056] (3) The pressure plate H is axially compressed, and the clamping cylinder A and the clamping cylinder B control the lateral clamping plates to clamp, and the battery cells are stacked.

[0057] (4) The pressing plate H pushes the battery cell in to keep the stacked battery cell stable, and drives the cylinder C to pull down so that the bottom of the battery cell fits into the bottom of the stack.

[0058] (5) The rotating downward pressure cylinder clamping is used as a reference, and the rotating downward pressure cylinder drives the clamping block to rotate and move up and down.

[0059] (6) The fixed base plate is driven by a servo electric cylinder to move as a whole on the bracket, and is used to transport the battery module from the receiving end to the front side of the stacked battery modules.

[0060] (7) A method of discharging the material by a manipulator is adopted. After the material is discharged, the driving cylinder C is started, and the driving cylinder C drives the cross bar and the fixed plate fixedly connected to the cross bar to move downward, driving the lifting platform to rise.

[0061] (8) The driving finger cylinder B drives the side clamp to clamp the battery cell. The fixed base plate is driven by the driving device to approach the placement position.

[0062] (9) The driving cylinder A drives the L-shaped support plate to retract, and the driving cylinder C drives the cross bar and the fixed plate fixedly connected to the cross bar to move downward, driving the lifting platform to descend so that the battery cell falls on the upper surface of the bracket.

[0063] (10) The pneumatic cylinder D drives the moving part to push the battery cell, and the driving finger cylinder B drives the lateral clamp to release the battery cell.

[0064] (11) The driving finger cylinder B drives the side clamp to release the battery cell and then drives the cylinder D

[0065] The elastic force of the spring connector acts on the battery cells to ensure tight stacking and complete the stacking operation.

[0066] Here we will classify different products into examples for explanation:

[0067] You can refer to the quantity ratio of two models of different modules, such as 3P18S (battery cell

[0068] 54PCS) and 3P26S (78PCS of batteries), the quantity ratio of the two models is 1:4. In normal working process, the battery beat is one battery stacking time.

[0069] 0.56s, relatively efficient.

[0070] The above descriptions are merely embodiments of the present invention and are not intended to limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made using the contents of the present invention's description and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A power battery stacking device, characterized in that: The invention comprises a bracket, on which a clamping finger cylinder is fixedly mounted, a pair of lateral clamping plates located on both sides of the bracket are fixedly mounted at the telescopic end of the clamping finger cylinder, and a clamping block is fixedly mounted on the inner wall of the lateral clamping plate; A rotating downward-pressing cylinder is fixedly mounted on one end of the bracket away from the servo electric cylinder, and a pressing block is fixedly mounted on the rotating downward-pressing cylinder; A servo electric cylinder and a battery discharge positioning device driven by the servo electric cylinder are fixedly installed above the bracket. The battery discharge positioning device is arranged above the middle part of the bracket. The middle part of the bracket has a groove for the battery discharge positioning device to pass through. The battery discharge positioning device includes a moving part and a fixed base plate located below the moving part. A horizontal driving cylinder D is fixedly installed at the rear end of the fixed base plate. The output end of the driving cylinder D is fixedly connected to the moving part, and the fixed base plate is fixedly connected to the driving end of the servo electric cylinder. The bracket is fixedly mounted on the partitioned rotating fence, the partitioned rotating fence is divided into an A-side fence and a B-side fence, and a partitioned fixed fence is fixedly mounted below the partitioned rotating fence; A vertical driving cylinder C is fixedly installed on the moving part, and the driving end of the driving cylinder C is fixedly connected to the lifting platform; a driving finger cylinder B is fixedly installed on the front side of the lifting platform, and the telescopic end of the driving finger cylinder B is fixedly connected to a lateral clamping claw, and the lateral clamping claw is a pair of L-shaped fixing plates.

2. The power battery stacking device according to claim 1, characterized in that: An axial connecting piece is fixedly installed below the moving piece, a rear base plate is fixedly connected to the axial connecting piece, a driving cylinder A is fixedly installed on the front side of the rear base plate, and the driving cylinder A is fixedly connected to an L-shaped surface support plate.

3. The power battery stacking device according to claim 2, characterized in that: A mounting frame is fixedly mounted on the rear base plate, and a bottom supporting plate is fixedly mounted above the mounting frame.

4. The power battery stacking device according to claim 1, characterized in that: A pressing plate H is vertically arranged on the moving member, and a spring connecting member is installed between the pressing plate H and the moving member.

5. The power battery stacking device according to claim 3, characterized in that: A driving finger cylinder F is fixedly installed above the bottom support plate, and a guide rail A is fixedly installed above the driving finger cylinder F. A corresponding slider A is slidably connected to the guide rail A. A guide rail B is fixedly installed on the bottom support plate, and a corresponding slider B is slidably connected above the guide rail B. The slider A and slider B are respectively fixedly connected to the L-shaped clamping plate.

6. The power battery stacking device according to claim 1, characterized in that: The lifting platform includes a crossbar fixedly connected to the output end of the driving cylinder C, and one end of the crossbar away from the driving cylinder C is fixedly connected to a fixing plate, and the fixing plate is fixedly mounted with the driving finger cylinder B; The specific steps are as follows: (1) The driving cylinder A drives the L-shaped support plate to lift up, and the battery cell is placed on the upper surface of the L-shaped support plate; (2) The finger cylinder F drives the slider A and the slider B, and the L-shaped clamping plates move toward each other to position and guide the stacked cells; (3) The pressure plate H is axially pressed, and the clamping cylinder A and the clamping cylinder B control the lateral clamping plates to clamp, and the battery cells are stacked; (4) The pressing plate H pushes the battery cell to keep the stacked battery cell stable, and drives the cylinder C to pull down, so that the bottom of the battery cell fits into the bottom of the stack; (5) The rotating downward pressure cylinder clamping is used as a reference, and the rotating downward pressure cylinder drives the clamping block to rotate and move up and down; (6) The fixed base plate is driven by a servo electric cylinder to move on the bracket as a whole, and is used to transport the battery module from the receiving end to the front side of the stacked battery module; (7) A method of discharging the material by a manipulator is adopted. After the material is discharged, the driving cylinder C is started, and the driving cylinder C drives the cross bar and the fixed plate fixedly connected to the cross bar to move downward to drive the lifting platform to rise; (8) Driving finger cylinder B drives the lateral clamp to clamp the battery cell; the fixed base plate is driven by the driving device to approach the placement position; (9) Driving cylinder A drives the L-shaped support plate to retract, and driving cylinder C drives the crossbar and the fixed plate fixedly connected to the crossbar to move downward, driving the lifting platform to descend so that the battery cell falls on the upper surface of the bracket; (10) The pneumatic cylinder D drives the moving part to push the battery cell, and the finger cylinder B drives the lateral clamp to release the battery cell; (11) After the finger cylinder B drives the lateral clamp to release the battery cell, the elastic force of the driving cylinder D and the spring connector acts on the battery cell to ensure that it is stacked tightly, completing the stacking operation.

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