A PCM handling device and welding machine

Abstract

This utility model relates to the field of welding between battery cells and management chips, and more particularly to a PCM handling device and welding machine, comprising a handling mechanism, characterized in that it further comprises a welding platform, wherein the handling mechanism comprises at least two bidirectional moving modules, and the battery cell carrier positioning part and the PCM positioning part constituting the welding platform are respectively disposed on the movable ends of the two bidirectional moving modules; the main feature of this utility model is the change in layout, especially the division of the welding platform into multiple parts: such as the battery cell carrier positioning part and the PCM positioning part. Since the two cooperate with each other to form the welding platform, after providing the effect of spatial dimension change to both, a series of positioning methods can be saved in the subsequent welding process, thereby increasing production capacity.

Description

Technical Field

[0001] This utility model relates to the field of welding between battery cells and management chips, and more particularly to a PCM handling device and welding machine. Background Technology

[0002] PCM, or power control management module, has various uses, such as controlling the charging and discharging of battery cells.

[0003] Generally speaking, the welding of PCM and battery cell is carried out by automated equipment, and the welding process is inseparable from feeding, positioning, welding and inspection.

[0004] In traditional welding machines, there are many small steps in the positioning process. Analysis shows that the main processing mechanisms are in a fixed position. To transfer PCM and battery cells to these processing mechanisms, they must go through multiple handling devices and undergo spatial changes before arriving at their destination. It is important to know that the transfer of the same PCM or battery cell between different handling devices will face new calibration problems. For the equipment, lack of calibration means no field of vision and inability to clamp the product. Therefore, too many handling processes mean more positioning, which also leads to very low production capacity of the entire production line. Utility Model Content

[0005] To address the aforementioned problems, this utility model provides a PCM handling device and a welding machine. The handling device integrates a positioning part required for the welding process, and the positioning part is divided into specifications suitable for PCM and cell carriers.

[0006] To achieve the above objectives, the technical solution adopted by this utility model is: a PCM handling device, comprising a handling mechanism, characterized in that it further comprises a welding platform, wherein the handling mechanism comprises at least two bidirectional moving modules, and the cell carrier positioning part and the PCM positioning part constituting the welding platform are respectively disposed on the movable ends of the two bidirectional moving modules.

[0007] The beneficial effects of this utility model are:

[0008] The main change in this invention is the alteration of the layout, particularly the division of the welding platform into multiple parts: such as the cell carrier positioning part and the PCM positioning part. Since the two parts work together to form the welding platform, by providing both parts with the effect of spatial dimension change, a series of positioning methods can be saved in the subsequent welding process, thereby increasing production capacity.

[0009] Specifically, the PCM positioning section includes a welding compensation mechanism, which includes a rotary feeder that provides longitudinal rotation to the PCM, so that the welding position of the PCM coincides with the terminal post of the battery cell in the battery cell carrier positioning section. The rotary feeder is used to facilitate the construction of a feeding flow path with the PCM feeding mechanism, ensuring that the PCM can be directly applied to the battery cell after passing through the welding compensation mechanism.

[0010] The PCM positioning section also includes a positioning push block. In order to adapt the PCM's posture on the rotary feeder and to position the PCM, the positioning push block includes a first linear movement mechanism that provides multi-directional spatial dimension changes and a first push block. The first push block has a first side surface that contacts the side of the PCM. After the PCM falls into the rotary feeder, it is located above the rotary feeder. Considering the compactness and limited design space, the side surface of the first push block contacts the edge of the PCM outside the rotary feeder, so that the entire position of the PCM is within the range of the rotary feeder.

[0011] The aforementioned first linear movement mechanism includes a slide cylinder, a first cylinder, and a first push block. The first cylinder is located at the movable end of the slide cylinder, and the first push block is connected to the movable end of the first cylinder. The movement directions provided by the slide cylinder and the first cylinder are perpendicular to each other.

[0012] Regarding the rotary feeder, it is designed to both adsorb and clamp the PCM to ensure the stability required during welding.

[0013] The rotary feeder includes a pair of grippers and an adsorption support platform disposed between the grippers. The top surface of the adsorption support platform is lower than the top surface of the two grippers, thus forming a positioning groove adapted to the PCM. After the PCM falls into the positioning groove, the positioning groove constrains the position of the PCM. It should be noted that the PCM is very small and cannot withstand too much clamping force. The positioning groove only provides auxiliary clamping force to the PCM, while the adsorption support platform provides negative pressure. Only under the action of the two components can the PCM be guaranteed not to shift during welding.

[0014] The welding compensation mechanism also includes a second linear movement mechanism, a pneumatic finger, and a rotary motor. The rotary motor is located on the output end of the second linear movement mechanism, and a mounting base is provided on the motor shaft of the rotary motor. The pneumatic finger is located on the mounting base, and the gripper is located on the gripping end of the pneumatic finger.

[0015] The moving module that drives the positioning part of the battery cell carrier has a support platform at its output end. The positioning part of the battery cell carrier is set on the support platform. The positioning part of the battery cell carrier includes a positioning cylinder, a positioning clamp, and a stop. The stop is L-shaped to fit the battery cell carrier and is set on the support platform. The positioning clamp has an L-shaped positioning part to fit the battery cell carrier. The output end of the positioning cylinder is connected to the L-shaped positioning part. The stop and the positioning clamp respectively clamp the two sides of the battery cell carrier, so that the position of the battery cell carrier is fixed. The positioning cylinder is tilted on the support platform. After its piston rod is connected to the positioning clamp, the positioning clamp has a direction to move towards the angle of the battery cell carrier.

[0016] It also includes a pressing assembly located in the welding area, which is used to press down the PCM on the cell to ensure close contact between the two so that the subsequent laser can accurately weld and fix them together. In particular, the pressing assembly includes a pressure claw with an arc-shaped slot. The pressure claw presses on the PCM, while the arc-shaped slot allows the laser to pass through to weld the PCM and the cell together.

[0017] The pressing assembly has an existing pressing support frame and a third linear moving mechanism, which is mounted on the pressing support frame and drives the pressing component to move.

[0018] The lower support frame is also equipped with a claw cleaning mechanism for cleaning residual welding slag from the claws during welding. This mechanism includes a second cylinder, a connecting plate, a collection box, and a brush roller. The second cylinder is mounted on the lower support frame, and its output end is connected to the connecting plate. The connecting plate provides mounting positions for the collection box and brush roller. One end of the collection box is connected to the side of the connecting plate, while the brush roller is rotatably mounted on the side of the connecting plate and positioned above the collection box. After welding contact, the second cylinder pushes the connecting plate towards the claws. The claws then touch and push the brush, causing the welding slag to be swept away by the brush.

[0019] The dual-line moving module is also existing technology, and its structure will not be described in detail.

[0020] This utility model is part of a PCM welding machine, and the specific usage process is as follows:

[0021] S1, respectively place the components (PCM, cell carrier) onto the output end of their respective bidirectional moving modules;

[0022] S2, take pictures and inspect the PCM and battery cell; (When the materials arrive, the battery cell terminals have tolerances, and similarly, the PCM also has its own thickness tolerances. For the PCM to contact the terminals, it is necessary to calculate the distance between their positions and the distance sensors through distance sensors. The control system controls the stroke required for them to contact each other based on the calculation results, so as to avoid the PCM and terminals contacting each other at the right time.)

[0023] S3, after passing the test, the rotating positioning component rotates 90°. At this time, the PCM located on the rotating positioning component is also facing the direction of the battery cell. Under the action of the bidirectional moving module, the two move closer to each other until the welding area of ​​the PCM is above the battery cell terminal.

[0024] S4, the pressure claws press on the PCM on the battery cell to prevent the PCM from moving.

[0025] S6, laser welding is started. After passing through the arc-shaped groove, the laser falls on the welding area of ​​the PCM and the electrode post. Attached Figure Description

[0026] Figure 1 This is a diagram showing the relationship between the PCM and the battery cell during welding.

[0027] Figure 2 yes Figure 1 An explosion diagram.

[0028] Figure 3 This is a perspective view of the present invention.

[0029] Figure 4 This is a diagram showing the usage status of one of the mobile modules during loading.

[0030] Figure 5 yes Figure 4 Enlarged diagram of point A.

[0031] Figure 6 yes Figure 5 Enlarged schematic diagram at point I.

[0032] Figure 7 yes Figure 4 Enlarged diagram of point B.

[0033] Figure 8 yes Figure 4 A stereoscopic view from another perspective.

[0034] Figure 9 yes Figure 8 Enlarged diagram of point C.

[0035] Figure 10 This is a 3D view of the PCM positioning section.

[0036] Figure 11 yes Figure 10 Enlarged diagram of point D.

[0037] Figure 12 This is a 3D view of the rotating feeder.

[0038] Figure 13 This is a 3D view of the battery cell carrier positioning section.

[0039] Figure 14 This is a 3D view of the pressure-down component.

[0040] Figure 15 yes Figure 14 Enlarged schematic diagram at point H.

[0041] Figure 16 yes Figure 3 A 3D view from another direction.

[0042] Figure 17 yes Figure 16 Enlarged diagram of point E.

[0043] Figure 18 This is a diagram showing the usage status of the welding platform.

[0044] Figure 19 yes Figure 18 Enlarged schematic diagram at point F.

[0045] Figure 20 This is a diagram showing the usage status of the PCM positioning section.

[0046] Figure 21 yes Figure 20 Enlarged schematic diagram at point G. Detailed Implementation

[0047] like Figure 1-21 As shown, a PCM handling device includes a handling mechanism, characterized in that it further includes a welding platform. The handling mechanism includes at least two bidirectional moving modules 2, and the cell carrier positioning part and the PCM positioning part constituting the welding platform are respectively disposed on the movable ends of the two bidirectional moving modules 2.

[0048] The beneficial effects of this utility model are:

[0049] The main change in this invention is the alteration of the layout, particularly the division of the welding platform into multiple parts: such as the cell carrier positioning part and the PCM positioning part. Since the two parts work together to form the welding platform, by providing both parts with the effect of spatial dimension change, a series of positioning methods can be saved in the subsequent welding process, thereby increasing production capacity.

[0050] Specifically, the PCM positioning section includes a welding compensation mechanism, which includes a rotary feeder 31 that provides longitudinal rotation to the PCM4, so that the welding position 42 of the PCM4 coincides with the terminal post 81 of the battery cell 8 in the battery cell carrier positioning section. The use of the rotary feeder 31 is to facilitate the construction of a feeding flow path with the mechanism that feeds the PCM4, and to ensure that the PCM4 can be directly applied to the battery cell 8 after passing through the welding compensation mechanism.

[0051] The PCM positioning section also includes a positioning push block. In order to adapt the posture of the PCM4 on the rotary feeder 31 and to position the PCM4, the positioning push block includes a first linear movement mechanism that provides multi-directional spatial dimension changes and a first push block 33. The first push block 33 has a first side surface 33a that contacts the side of the PCM4. After the PCM4 falls into the rotary feeder 31, it is located above the rotary feeder 31. Considering the compactness and limited design space, the side of the first push block 33 contacts the edge 41 of the PCM4 outside the rotary feeder 31, so that the position of the entire PCM4 is within the range of the rotary feeder 31.

[0052] The aforementioned first linear movement mechanism includes a slide cylinder 32a and a first cylinder 32b. The first cylinder 32b is located at the movable end of the slide cylinder 32a. The first push block 33 is connected to the movable end of the first cylinder 32b. The movement directions provided by the slide cylinder 32a and the first cylinder 32b are perpendicular to each other.

[0053] The rotary feeder 31 is designed to both absorb and clamp the PCM4 to ensure the stability required during welding.

[0054] The rotating feeder 31 includes a pair of grippers 31a and an adsorption support platform 31b disposed between the grippers 31a. The top surface 31b' of the adsorption support platform 31b is lower than the top surface 31a' of the two grippers 31a, thus forming a positioning groove 31c adapted to the PCM4. After the PCM4 falls into the positioning groove 31c, the positioning groove 31c constrains the position of the PCM4. It should be noted that the PCM4 is very small and cannot withstand too much clamping force. The positioning groove 31c only provides auxiliary clamping force to the PCM4, while the adsorption support platform 31b provides negative pressure. Only under the action of the two components can it be ensured that the PCM4 will not shift during welding.

[0055] The welding compensation mechanism also includes a second linear movement mechanism 33, a pneumatic finger 34, and a rotary motor 35. The rotary motor 35 is located on the output end of the second linear movement mechanism 33. A mounting base 36 is provided on the motor shaft of the rotary motor 35. The pneumatic finger 34 is located on the mounting base 36, and the gripper 31a is located on the gripping end of the pneumatic finger 34.

[0056] The bidirectional moving module 2, which moves the positioning part of the battery cell carrier, has a support platform 100 at its output end. The positioning part of the battery cell carrier is set on the support platform 100 and includes a positioning cylinder 101, a positioning clamp 102, and a stop 103. The stop 103 is L-shaped to fit the battery cell carrier 5 and is set on the support platform 100. The positioning clamp 102 has an L-shaped positioning part 102' to fit the battery cell carrier 5. The output end of the positioning cylinder 101 is connected to the L-shaped positioning part 102'. The stop 103 and the positioning clamp 102 respectively clamp the two sides of the battery cell carrier 5, so that the position of the battery cell carrier 5 is fixed. The positioning cylinder 101 is tilted on the support platform 100. After its piston rod is connected to the positioning clamp 102, the positioning clamp 102 has a direction to move towards the angle of the battery cell carrier 5.

[0057] It also includes a pressing assembly located in the welding area, which is used to press down the PCM4 on the cell 8 to ensure close contact between the two so that the subsequent laser can accurately weld and fix them together. In particular, the pressing assembly includes a pressure claw 61 with an arc-shaped slot 61a. The pressure claw 61 presses down on the PCM4, while the arc-shaped slot 61a allows the laser to pass through to weld the PCM4 and the cell 8.

[0058] The pressing assembly has an existing pressing support frame 62 and a third linear moving mechanism 63. The third linear moving mechanism 63 is mounted on the pressing support frame 62 and drives the pressing component to move.

[0059] The lower support frame 62 is also equipped with a claw cleaning mechanism 7 for cleaning welding slag remaining on the claws 61 during welding. The claw cleaning mechanism 7 includes a second cylinder 71, a connecting plate 72, a collection box 73, and a brush roller 74. The second cylinder 71 is mounted on the lower support frame 62, and its output end is connected to the connecting plate 72. The connecting plate 72 provides installation positions for the collection box 73 and the brush roller 74. One end of the collection box 73 is connected to the side of the connecting plate 72, while the brush roller 74 is rotatably mounted on the side of the connecting plate 72 and located above the collection box 73. After welding contact, the second cylinder 71 pushes the connecting plate 72 toward the claws 61. The claws 61 then brush off the welding slag by touching and pushing the brush.

[0060] The bidirectional mobile module 2 is also existing technology, and its structure will not be described in detail.

[0061] The above embodiments are merely preferred embodiments of the present utility model and are not intended to limit the scope of the present utility model. Various modifications and improvements made to the technical solutions of the present utility model by those skilled in the art without departing from the spirit of the present utility model should fall within the protection scope defined by the claims of the present utility model.

Claims

1. A PCM handling device, comprising a handling mechanism, characterized in that, It also includes a welding platform, and the conveying mechanism includes at least two bidirectional moving modules. The cell carrier positioning part and the PCM positioning part that constitute the welding platform are respectively set on the moving ends of the two bidirectional moving modules.

2. The PCM conveying device according to claim 1, characterized in that, The PCM positioning section includes a welding compensation mechanism, which includes a rotary feeder that provides longitudinal rotation to the PCM, so that the welding position of the PCM coincides with the terminal post of the battery cell in the battery cell carrier positioning section.

3. The PCM handling device according to claim 1, characterized in that, The PCM positioning section also includes a positioning push block. In order to adapt the PCM to the posture of the rotating feeder and to position the PCM, the positioning push block includes a first linear movement mechanism that provides multi-directional spatial dimension changes and a first push block. The first push block has a first side surface that contacts the side surface of the PCM.

4. A PCM handling device according to claim 3, characterized in that, The first linear movement mechanism includes a slide cylinder, a first cylinder, and a first push block. The first cylinder is located at the movable end of the slide cylinder, and the first push block is connected to the movable end of the first cylinder. The movement directions provided by the slide cylinder and the first cylinder are perpendicular to each other.

5. A PCM handling device according to claim 2, characterized in that, The rotary feeder is designed to both adsorb and clamp PCM. The rotary feeder includes a pair of grippers and an adsorption support platform disposed between the grippers. The top surface of the adsorption support platform is lower than the top surface of the two grippers, thereby forming a positioning groove adapted to the PCM.

6. A PCM handling device according to claim 5, characterized in that, The welding compensation mechanism also includes a second linear movement mechanism, a pneumatic finger, and a rotary motor. The rotary motor is located on the output end of the second linear movement mechanism, and a mounting base is provided on the motor shaft of the rotary motor. The pneumatic finger is located on the mounting base, and the gripper is located on the gripping end of the pneumatic finger.

7. A PCM handling device according to claim 1, characterized in that, The moving module that drives the positioning part of the battery cell carrier has a support platform at its output end. The positioning part of the battery cell carrier is set on the support platform. The positioning part of the battery cell carrier includes a positioning cylinder, a positioning clamp, and a stop. The stop is L-shaped to fit the battery cell carrier and is set on the support platform. The positioning clamp has an L-shaped positioning part to fit the battery cell carrier. The output end of the positioning cylinder is connected to the L-shaped positioning part. The stop and the positioning clamp respectively clamp the two sides of the battery cell carrier, so that the position of the battery cell carrier is fixed. The positioning cylinder is tilted on the support platform. After its piston rod is connected to the positioning clamp, the positioning clamp has a direction to move towards the angle of the battery cell carrier.

8. A PCM conveying device according to claim 1, characterized in that, It also includes a pressing assembly, which includes a pressing support frame, a third linear moving mechanism, and a pressing claw. The third linear moving mechanism is mounted on the pressing support frame and drives the pressing component to move. The pressing claw has an arc-shaped slot and presses on the PCM, while the arc-shaped slot allows the laser to pass through.

9. A welding machine, characterized in that, It includes the PCM transport device as described in any one of claims 1-8.

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