Battery module winding processing device

Abstract

The utility model provides a kind of battery module winding processing device, including the reel device for releasing wrapping material, for clamping battery module and driving its rotation battery module rotating device, battery module rotating device includes second motor and the rotating arm connected with second motor, rotating arm is provided with two movable seat that can move along rotating arm axial direction, movable seat is provided with core rod, and clamping force detection mechanism is arranged between core rod and movable seat. Clamping force detection mechanism is arranged between core rod and movable seat, clamping force detection mechanism can detect the clamping force of core rod to battery module in real time, and feedback detection result to control system, so that clamping force can be accurately controlled in the safety range set;This clamping force closed-loop control mode can effectively avoid the problem that clamping force is too large or too small, avoid the problem that battery module is damaged due to clamping force being too large or battery module appears loose, deviation and other problems in the process of rotation due to clamping force being too small, improve winding processing quality.

Description

Technical Field

[0001] This utility model relates to the field of battery production equipment technology, and in particular to a battery module winding processing device. Background Technology

[0002] In the production process of soft-pack battery modules, end plates are usually used to clamp the cell module in the cross-sectional direction, and a specific material is used to wrap the outside of the battery module to achieve the encapsulation of the battery module.

[0003] The key step in this encapsulation process is wrapping the battery module with a specific encapsulating material. The performance of the corresponding wrapping equipment directly affects the encapsulation quality and production efficiency. Existing battery module wrapping equipment needs to stably clamp the battery module and rotate it to facilitate the wrapping material. However, existing battery module wrapping equipment has the following problems in practical use: First, the clamping structure has poor adaptability to battery modules of different specifications and sizes, making it difficult to meet diverse production needs. Second, the control of clamping force is not precise enough when clamping the battery module, and there is a lack of effective clamping force detection methods. This may result in excessive clamping force damaging the battery module, or insufficient clamping force causing the battery module to loosen or shift during rotation, affecting the accuracy and quality of the wrapping process, and consequently adversely affecting the overall performance of the battery module. Summary of the Invention

[0004] The purpose of this invention is to address the shortcomings of existing technologies and provide a battery module winding processing device.

[0005] The purpose of this utility model is achieved through the following technical solution: a battery module winding processing device, including a roll device for releasing wrapping material and a battery module rotating device for clamping the battery module and driving it to rotate. The battery module rotating device includes a second motor and a rotating arm connected to the second motor. Two movable seats that can move along the axial direction of the rotating arm are provided on the rotating arm. A mandrel is provided on the movable seat. A clamping force detection mechanism is provided between the mandrel and the movable seat.

[0006] Preferably, the battery module has end plates at both ends, and the end plates have insertion holes; when the battery module is clamped, the mandrel is inserted into the insertion holes on the end plates of the battery module.

[0007] Preferably, the clamping force detection mechanism includes a mandrel mounting base and a fixing block corresponding to the mandrel mounting base. The fixing block is fixedly mounted on a movable base, and the mandrel is mounted on the mandrel mounting base. A guide post is provided on the mandrel mounting base, and a guide hole is provided on the fixing block. The guide post passes through the guide hole on the fixing base. A force sensor is provided between the mandrel mounting base and the fixing block.

[0008] Preferably, the rolling device includes a fixed base, a rolling drum rotatably mounted on the fixed base, a wrapping material wound on the rolling drum, and a first motor connected to the rolling drum and used to drive the rolling drum to rotate on the fixed base.

[0009] Preferably, the first motor is a servo motor.

[0010] Preferably, a third fixing base is also included, on which a transmitting unit is disposed, and a receiving unit is disposed below the transmitting unit; the packaging material passes between the transmitting unit and the receiving unit.

[0011] Preferably, the wrapping material is carbon fiber cloth.

[0012] The beneficial effects of this utility model are as follows: 1. In this utility model, the two movable seats on the rotating arm that can move axially allow the core rod to adjust the clamping distance according to the length of the battery module. This design breaks through the limitation of the fixed distance of traditional clamps. By moving the movable seats themselves, the core rod can be accurately aligned with the insertion hole on the end plate of the battery module without replacing the clamps or redesigning the tooling. It can be adapted to various battery modules of different sizes and specifications.

[0013] 2. A clamping force detection mechanism is installed between the mandrel and the moving base. The clamping force detection mechanism can detect the clamping force of the mandrel on the battery module in real time and feed the detection results back to the control system, so that the clamping force can be accurately controlled within the set safety range. This clamping force closed-loop control method can effectively avoid the problem of excessive or insufficient clamping force, and avoid damage to the battery module due to excessive clamping force or loosening or displacement of the battery module during rotation due to insufficient clamping force, thereby improving the winding processing quality. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of this utility model.

[0015] Figure 2 for Figure 1 Enlarged view of section A.

[0016] Figure 3 This is a schematic diagram showing the battery module placed on the clamping device.

[0017] Figure 4 This is a schematic diagram of the battery module.

[0018] In the diagram: 1. Fixed base, 3. Drum, 4. First motor, 6. Support base, 7. Second motor, 8. Rotating arm, 9. Moving base, 10. Core rod, 11. Third fixed base, 12. Transmitting unit, 13. Receiving unit, 14. Core rod mounting base, 15. Fixed block, 16. Guide column, 17. Force sensor, 18. Battery module, 18-1. Battery module body, 18-2. End plate, 18-2a. Socket, 19. Rotating base, 20. Adjustment drive cylinder. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model are within the protection scope of the present utility model.

[0020] like Figures 1 to 4 As shown, a battery module winding processing device includes a roll device for releasing wrapping material and a battery module rotating device for clamping and rotating a battery module 18. The battery module rotating device includes a second motor 7 and a rotating arm 8 connected to the second motor 7. Two movable seats 9 are provided on the rotating arm 8 and can move along the axial direction of the rotating arm 8. A mandrel 10 is provided on the movable seat 9, and a clamping force detection mechanism is provided between the mandrel 10 and the movable seat 9.

[0021] The battery module 18 has end plates 18-2 at both ends, and the end plates 18-2 have insertion holes 18-2a. When the battery module 18 is clamped, the mandrel 10 is inserted into the insertion hole 18-2a on the end plate 18-2 of the battery module 18.

[0022] In this application, two axially movable seats 9 are provided on the rotating arm 8, allowing the mandrel 10 to adjust the clamping distance according to the length of the battery module 18. This design breaks through the limitation of fixed spacing of traditional clamps. By moving the movable seats 9 themselves, the mandrel 10 can be accurately aligned with the insertion hole 18-2a on the end plate 18-2 of the battery module 18, without the need to change the clamps or redesign the tooling, and can be adapted to various battery modules 18 of different sizes and specifications. The rotating arm 8 is provided with a drive mechanism for driving the movable seats 9 to move along its axial direction. This drive mechanism can be a motor screw mechanism.

[0023] A clamping force detection mechanism is provided between the mandrel 10 and the movable seat 9. This mechanism can detect the clamping force of the mandrel 10 on the battery module 18 in real time and feed the detection results back to the control system, so that the clamping force can be accurately controlled within the set safety range. This closed-loop clamping force control method can effectively avoid the problem of excessive or insufficient clamping force, preventing damage to the battery module 18 due to excessive clamping force or loosening or displacement of the battery module 18 during rotation due to insufficient clamping force, thereby improving the winding process quality.

[0024] The specific method for winding the battery module 18 according to this utility model is as follows: First, the battery module 18 to be wound is placed on the battery module rotating device. The mandrel 10 on the battery module rotating device is inserted into the insertion hole 18-2a on the end plate 18-2, and a certain clamping force is applied to the battery module 18 through the mandrel 10. Then, the winding device 3 releases the wrapping material at a certain speed. The wrapping material is wound to the outside of the battery module 18. During this process, the battery module 18 is driven to rotate at a certain speed by the battery module rotating device. When the winding is completed, the battery module rotating device and the winding device 3 stop rotating. The wrapping material is cut to separate the battery module 18 from the wrapping material. Then, the wrapped battery module 18 is removed from the battery module rotating device, and the next battery module 18 is wound in the same way.

[0025] Specifically, the clamping force detection mechanism includes a mandrel mounting base 14 and a fixing block 15 corresponding to the mandrel mounting base 14. The fixing block 15 is fixedly mounted on the movable base 9, and the mandrel 10 is mounted on the mandrel mounting base 14. A guide post 16 is provided on the mandrel mounting base 14, and a guide hole is provided on the fixing block 15. The guide post 16 passes through the guide hole on the fixing base. A force sensor 17 is provided between the mandrel mounting base 14 and the fixing block 15.

[0026] The guide post 16 and the guide hole are precisely clearance-fitted (the clearance is controlled within 0.02-0.05mm), allowing the mandrel mounting base 14 to move only axially (in the clamping direction), strictly limiting its radial (perpendicular to the clamping direction) movement or tilting, thus ensuring the accuracy of clamping force measurement. In actual clamping, without a guide structure, slight swaying of the moving base 9 or minor offset of the battery module 18 may cause the mandrel 10 to bear lateral force, which in turn causes the force sensor 17 to detect the resultant force of "axial force + lateral force," resulting in falsely high or distorted detection values.

[0027] In this application, the force sensor 17 is a resistance strain gauge sensor.

[0028] The roll 3 device includes a fixed base and a roll 3 rotatably mounted on the fixed base. The roll 3 is wound with wrapping material. The fixed base is equipped with a first motor 4 connected to the roll 3 and used to drive the roll 3 to rotate. The first motor 4 drives the roll 3 to rotate and precisely controls the release speed of the wrapping material.

[0029] In this application, the first motor 4 is a servo motor.

[0030] The present invention also includes a third fixing base 11, on which a transmitting unit 12 is disposed, and a receiving unit 13 is disposed below the transmitting unit 12; the wrapping material passes between the transmitting unit 12 and the receiving unit 13.

[0031] The transmitting unit 12 is a laser transmitter, and the receiving unit 13 is a laser receiver. Both the laser transmitter and the laser receiver are connected to the control system. During normal operation, the wrapping material blocks the laser beam, and the receiver is in a shielded state. When the material breaks or runs out, the laser beam is unobstructed and directly illuminates and is received by the receiver. The receiver immediately outputs a "material shortage signal" to the control system, prompting the operator to handle the situation as soon as possible.

[0032] In this application, the packaging material is carbon fiber cloth.

[0033] Furthermore, the battery module rotation device is mounted on the support base 6, and the lower end of the support base 6 is mounted on the rotating base 19, with the lower end of the support base 6 rotatably engaged with the rotating base 19. Adjustment drive cylinders 20 are respectively provided on both sides of the support base 6. The tilt angle of the support base 6 can be adjusted by the adjustment drive cylinders 20 on both sides to adjust the tension of the wrapping material, thereby adjusting the winding effect of the battery module. In this embodiment, the adjustment drive cylinders 20 are hydraulic cylinders.

[0034] This utility model is not limited to the above-described preferred embodiments. Anyone can derive other forms of products under the guidance of this utility model. However, regardless of any changes made in their shape or structure, any technical solution that is the same as or similar to this application falls within the protection scope of this utility model.

Claims

1. A battery module winding processing apparatus, characterized in that, The device includes a roll device for releasing packaging material and a battery module rotating device for clamping and rotating the battery module. The battery module rotating device includes a second motor and a rotating arm connected to the second motor. The rotating arm is provided with two movable seats that can move along the axial direction of the rotating arm. A mandrel is provided on the movable seat. A clamping force detection mechanism is provided between the mandrel and the movable seat.

2. The battery module winding processing apparatus according to claim 1, characterized in that, The battery module has end plates at both ends, and the end plates have insertion holes; when clamping the battery module, the mandrel is inserted into the insertion holes on the end plates of the battery module.

3. The battery module winding processing apparatus according to claim 1, characterized in that, The clamping force detection mechanism includes a mandrel mounting base and a fixing block corresponding to the mandrel mounting base. The fixing block is fixedly mounted on a movable base, and the mandrel is mounted on the mandrel mounting base. A guide post is provided on the mandrel mounting base, and a guide hole is provided on the fixing block. The guide post passes through the guide hole on the fixing base. A force sensor is provided between the mandrel mounting base and the fixing block.

4. The battery module winding processing apparatus according to claim 1, characterized in that, The rolling device includes a fixed base, a rolling drum rotatably mounted on the fixed base, a wrapping material wound on the rolling drum, and a first motor connected to the rolling drum and used to drive the rolling drum to rotate on the fixed base.

5. The battery module winding processing apparatus according to claim 4, characterized in that, The first motor is a servo motor.

6. The battery module winding processing apparatus according to claim 1, characterized in that, It also includes a third mounting base, on which a transmitting unit is mounted, and below the transmitting unit is a receiving unit; the packaging material passes between the transmitting unit and the receiving unit.

7. The battery module winding processing apparatus according to claim 1, characterized in that, The wrapping material is carbon fiber cloth.

8. A battery module winding processing apparatus according to claim 1, characterized in that, The battery module rotation device is mounted on the support base, and the lower end of the support base is mounted on the rotating base. The lower end of the support base and the rotating base are rotatably engaged. Adjustment drive cylinders are respectively provided on both sides of the support base.

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