Pouch battery edge sealing and bending device

Abstract

The utility model discloses a kind of soft package battery edge sealing bending device, including bending assembly line, bending assembly line is arranged with transfer platform, fixed clamp for placing battery cell is provided on transfer platform, bending roller is provided above bending assembly line, bending roller is installed on lifting equipment, bending assembly line end is provided with double pressure head, double pressure head includes rotary drive device, the output end of rotary drive device is connected with pressure measuring seat, pressure measuring seat both sides are respectively arranged with cold head, hot head, the edge sealing of cold head, hot head and battery cell is located at the same height, pressure measuring seat includes middle rotating seat, compression elastic ware is connected between the cold head, hot head and middle rotating seat, compression elastic ware one end is provided with pressure sensor, first through bending roller pre-bending, then using cold and hot double pressure head bending edge sealing, guarantee the reliability of edge sealing bending.

Description

Technical Field

[0001] This utility model relates to the field of battery edge sealing and bending technology, specifically to a soft-pack battery edge sealing and bending device. Background Technology

[0002] During the production of pouch cells, the head edge of the pouch cell needs to be bent and bonded to make the product more resistant to drops. The open gap can accommodate a circuit board, which can shorten the battery size and save space in the battery compartment of electronic products. In the existing technology, the head edge bending of pouch cells requires multiple stations to complete the bending and heating operations separately. The bending and heating mechanisms used are complex in structure and occupy a lot of space. Moreover, this bending and heating method requires frequent transfer of batteries to different stations, which is not conducive to further improving production efficiency. Utility Model Content

[0003] The purpose of this utility model is to overcome the above-mentioned defects or problems in the background technology and provide a soft-pack battery edge sealing and bending device.

[0004] To achieve the above objectives, the present invention adopts the following technical solution:

[0005] A soft-pack battery edge sealing and bending device includes a bending production line, a transfer platform arranged on the bending production line, a fixing fixture for placing battery cells on the transfer platform, bending rollers arranged above the bending production line and mounted on a lifting device, and a double pressure head arranged at the end of the bending production line. The double pressure head includes a rotary drive device, the output end of which is connected to a pressure testing center seat. A cold pressure head and a hot pressure head are respectively arranged on both sides of the pressure testing center seat. The cold pressure head and the hot pressure head are at the same height as the edge sealing of the battery cell. The pressure testing center seat includes a central rotating seat. A compression elastic device is connected between the cold pressure head, the hot pressure head and the central rotating seat. A pressure sensor is arranged at one end of the compression elastic device.

[0006] In some embodiments of this utility model, the bending production line is located on one side of the first straight module, and the first straight module is provided with a handling robotic arm for handling battery cells.

[0007] In some embodiments of this utility model, a feeding conveyor is provided on one side of the bending conveyor, and a handling station is provided on both the bending conveyor and the feeding conveyor. The handling station is arranged within the stroke range of the handling robot arm.

[0008] In some embodiments of this utility model, a discharge assembly line is provided on the other side of the bending assembly line, and a discharge station is provided on the discharge assembly line, which is arranged within the stroke range of the handling robotic arm.

[0009] In some embodiments of this utility model, a defective production line is provided on one side of the discharge production line, and the defective production line is provided with a feeding station. The feeding station, the discharge station, and the handling station are located on the same straight line.

[0010] In some embodiments of this utility model, a dispensing device and a vision lens are sequentially arranged above the bending production line.

[0011] In some embodiments of this utility model, the dispensing device is installed in the second linear module, and the vision lens is installed in the third linear module. The arrangement directions of the second linear module and the third linear module are both parallel to the arrangement direction of the first linear module.

[0012] In some embodiments of this utility model, the first linear module, the second linear module, and the third linear module are all arranged on a gantry frame.

[0013] In some embodiments of this utility model, the compression elastic element is symmetrically arranged on both sides of the intermediate rotating seat, the inner side of the cold pressure head and the hot pressure head is provided with a receiving recess corresponding to the pressure sensor, the hot pressure head is provided with a heating unit, and the intermediate rotating seat is provided with a pressure controller.

[0014] In some embodiments of this utility model, a guide rod is provided inside the compression elastic device, and a guide hole is provided in the intermediate rotating seat corresponding to the guide rod.

[0015] As can be seen from the above description of this utility model, compared with the prior art, this utility model has the following beneficial effects:

[0016] 1. During the edge sealing and bending process of soft-pack batteries, the batteries are first pre-bent using bending rollers, and then the edges are bent and sealed using both hot and cold pressure heads. This ensures that the edges are formed in a distributed manner during the sealing process, effectively preventing edge rebound deformation and ensuring the reliability of edge sealing and bending. In addition, each pressure head is connected to a compression elastic device between itself and the intermediate rotating seat, which plays a flexible buffering role and effectively reduces rigid damage to the battery cell.

[0017] 2. The cold pressing head and the hot pressing head are symmetrically arranged and switched by a rotary drive device, which makes the structure compact, reduces equipment cost and maintenance complexity. At the same time, the hot pressing and cold pressing processes are completed in the same final bending station, which helps to reduce positioning errors caused by switching between different pressing heads, resulting in good consistency and stability of the cell bending angle.

[0018] 3. Multiple bending production lines work together to transport battery cells. The cold pressing head and the hot pressing head are switched by rotating 180° through a rotary drive device. During the two bending processes, it is not necessary to transport and transfer battery cells between different workstations, which helps to ensure production efficiency. Attached Figure Description

[0019] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the following description of the embodiments will be briefly introduced. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is a schematic diagram of the structure of this utility model;

[0021] Figure 2 This is a schematic diagram of the bending production line of this utility model;

[0022] Figure 3 This is a schematic diagram of the hot press head of this utility model;

[0023] Figure 4 This is a schematic diagram of the clamp base of this utility model;

[0024] Figure 5 This is a schematic diagram of the pre-bending of the battery cell according to this utility model;

[0025] Figure 6 This is a schematic diagram of the final bending of the battery cell according to this utility model;

[0026] Explanation of key figure labels:

[0027] 1. Bending production line; 10. Transfer platform; 11. Battery cell; 12. Dispensing device; 13. Vision lens; 14. Bending roller; 2. Double pressure head; 20. Rotary drive device; 21. Pressure testing center seat; 22. Cold pressure head; 23. Hot pressure head; 24. Compression elastic device; 25. Heat insulation plate; 26. Pressure head seat; 27. Pressure head lower seat; 28. Accommodating recess; 29. ​​Limiting frame; 3. First linear module; 30. Handling robotic arm; 31. Second linear module; 32. Third linear module; 33. Feeding production line; 34. Defective production line; 35. Discharge production line; 36. Gantry frame; 4. Fixture; 40. Fixture seat; 41. Drive push rod; 5. Spring positioning block; 50. Guide rod. Detailed Implementation

[0028] 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 preferred embodiments of the present utility model and should not be considered as excluding other embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the scope of protection of the present utility model.

[0029] Unless otherwise expressly defined, the use of terms such as "first," "second," or "third" in the claims, description, and drawings of this utility model is for distinguishing different objects and not for describing a specific order.

[0030] Unless otherwise expressly defined, in the claims, description, and accompanying drawings of this utility model, the use of directional terms such as "center," "lateral," "longitudinal," "horizontal," "vertical," "top," "bottom," "inner," "outer," "upper," "lower," "front," "rear," "left," "right," "clockwise," and "counterclockwise" to indicate orientation or positional relationships is based on the orientation and positional relationships shown in the accompanying drawings and is only for the convenience of describing this utility model and simplifying the description. It does not indicate or imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore should not be construed as limiting the specific protection scope of this utility model.

[0031] Unless otherwise expressly defined, the terms "fixed connection" or "fixed connection" used in the claims, description and drawings of this utility model shall be interpreted broadly to refer to any connection in which there is no displacement or relative rotation relationship between the two parties, including non-removable fixed connection, detachable fixed connection, integral connection and fixed connection through other devices or components.

[0032] In the claims, description and accompanying drawings of this utility model, the terms "comprising," "having," and variations thereof are used to mean "including but not limited to."

[0033] See the example. Figure 1-6 :

[0034] A soft-pack battery edge sealing and bending device includes several bending production lines 1 arranged in parallel. A transfer platform 10 is arranged on each bending production line 1, and the transfer platform 10 can move along the arrangement direction of the bending production line 1. A fixing clamp 4 for placing a battery cell 11 is provided on the transfer platform 10. The battery cell 11 is a soft-pack battery cell. A bending roller 14 is arranged above the bending production line 1 and is mounted on a lifting device. The lifting device is erected above the bending production line 1 and is used to drive the bending roller 14 up and down. A pre-bending station is provided on the bending production line 1 corresponding to the bending roller 14. When the transfer platform 10 moves to the pre-bending station, the lifting device drives the bending roller 14 up and down to pre-bend the edge sealing of the battery cell 11. It is understood that the pre-bending angle is an acute angle.

[0035] The bending production line 1 is equipped with a double pressure head 2 at its end. A final bending station is provided on the bending production line 1 corresponding to the double pressure head 2. The double pressure head 2 includes a rotary drive device 20. The output end of the rotary drive device 20 is connected to a pressure testing center 21. A cold pressure head 22 and a hot pressure head 23 are respectively arranged on both sides of the pressure testing center 21. The cold pressure head 22 and the hot pressure head 23 are at the same height as the sealing edge of the battery cell 11. The pressure testing center 21 includes a central rotating seat. A compression elastic element 24 is connected between the cold pressure head 22, the hot pressure head 23, and the central rotating seat. A pressure sensor is installed at the end. When the transfer platform 10 moves to the final bending station, the sealing edge of the battery cell 11 contacts the double pressure head 2 and is bent. Preferably, the hot pressure head 23 first performs hot pressing bending on the sealing edge of the battery cell 11. Then the transfer platform 10 exits the final bending station, the sealing edge of the battery cell 11 separates from the hot pressure head 23, the rotary drive device 20 drives the pressure testing seat 21 to rotate 180°, and the transfer platform 10 re-enters the final bending station, so that the bent and upright sealing edge contacts the cold pressure head 22. After the sealing edge is cold pressed, the transfer platform 10 exits the final bending station.

[0036] In one embodiment, the compression elastic element 24 is symmetrically arranged on both sides of the intermediate rotating seat, and the compression elastic element 24 is fixedly connected to the intermediate rotating seat. The inner sides of the cold pressure head 22 and the hot pressure head 23 are provided with receiving recesses 28 corresponding to the pressure sensor. The hot pressure head 23 is provided with a heating unit, and the intermediate rotating seat is provided with a pressure controller. The pressure sensor is electrically connected to the pressure sensor. The outer side of the receiving recess 28 is provided with a limiting frame 29 for installing the pressure sensor. The limiting frame 29 is installed by screws.

[0037] In one embodiment, the heating unit uses an electric heating wire, which generates heat when energized. The hot press head 23 includes a heat insulation plate 25. The heat insulation plate 25 is connected to a press head upper seat 26 and a press head lower seat 27 on both sides by screws. The accommodating recess 28 and the limiting frame 29 are arranged on the press head lower seat 27. The press head lower seat 27 is provided with a wire hole corresponding to the pressure sensor. The inner side of the press head upper seat 26 is provided with a placement groove for placing the electric heating wire.

[0038] In one embodiment, a guide rod 50 is fitted inside the compression elastic device 24, and a spring positioning block 5 is provided at the rear end of the pressure sensor. The spring positioning block 5 is located inside the limiting frame 29, and one end of the guide rod 50 is installed in the middle of the other side of the spring positioning block 5 by a screw. The intermediate rotating seat is provided with a guide hole corresponding to the guide rod 50. The compression elastic device 24 adopts either a compression spring or a compression rubber spring. It can be understood that the spring positioning block 5 does not come out of the limiting frame 29. In the compressed state of the compression elastic device 24, one end of the compression elastic device 24 abuts against the spring positioning block 5, and the two guide rods 50 do not contact each other, that is, the minimum positional distance between the two spring positioning blocks 5 is greater than the sum of the lengths of the two guide rods 50.

[0039] In one implementation, the bending production line 1 adopts a CNC linear guide rail, and the transfer platform 10 adopts a corresponding guide rail slide. The fixing fixture 4 includes a fixture base 40 and a drive push rod 41. The fixture base 40 is provided with a positioning groove for placing the battery cell 11. Clamping blocks are arranged on both sides of the positioning groove. The clamping blocks clamp the battery cell 11 under the action of the drive push rod 41. A rubber pad is provided on the inner side of the clamping block. It can be understood that in use, the front sealing edge of the battery cell 11 faces forward and protrudes from the fixture base 40, which facilitates the bending of the sealing edge.

[0040] In one embodiment, a dispensing device 12 and a vision lens 13 are sequentially arranged above the bending production line 1. The dispensing device 12 and the vision lens 13 are located between the transport station and the final bending station of the bending production line 1. It can be understood that the dispensing device 12 includes a dispensing gun and a dispensing lifting device for driving the dispensing gun to move up and down.

[0041] In one embodiment, the dispensing device 12 is installed in the second linear module 31, and the vision lens 13 is installed in the third linear module 32. The arrangement directions of the second linear module 31 and the third linear module 32 are both parallel to the arrangement direction of the first linear module 3.

[0042] In one implementation, the first linear module 3, the second linear module 31, and the third linear module 32 are all arranged on the gantry 36, and the three gantry 36 are arranged side by side.

[0043] In one embodiment, the bending production line 1 is located in front of the first straight module 3. The first straight module 3 is equipped with a handling robot arm 30 for handling the battery cells 11. A feeding production line 33 is provided on one side of the bending production line 1. Both the bending production line 1 and the feeding production line 33 are equipped with handling stations. A discharging production line 35 is provided on the other side of the bending production line 1. A discharging station is provided on the discharging production line 35. A defective production line 34 is provided on one side of the discharging production line 35. A feeding station is provided on the defective production line 34. The feeding station, handling station and discharging station are all arranged on the same straight line and within the stroke range of the handling robot arm 30, which facilitates the handling robot arm 30 to handle the battery cells 11 between the various production lines.

[0044] Understandably, during use, the robotic arm 30 transports the battery cell 11 from the feeding line 33 to the transfer platform 10 of the bending line 1. The fixing clamp 4 holds the battery cell 11, and the transfer platform 10 moves the battery cell 11 past the dispensing device 12 and the vision lens 13 to the pre-bending station. The lifting device drives the bending roller 14 to rise and fall, thereby pre-bending the sealing edge of the battery cell 11. Then, the transfer platform 10 moves to the final bending station, where the hot press head 23 first seals the battery cell 11. While hot-pressing and bending, the transfer platform 10 exits the final bending station, and the sealing edge of the battery cell 11 separates from the hot pressing head 23. The rotary drive device 20 drives the pressure testing seat 21 to rotate 180°, and the transfer platform 10 re-enters the final bending station, so that the bent and upright sealing edge contacts the cold pressing head 22. After the sealing edge is cold-pressed, the transfer platform 10 exits the final bending station and returns to the handling station. The fixing clamp 4 releases the battery cell 11, and the battery cell 11 is carried away from the bending production line 1 by the handling robot arm 30.

[0045] The foregoing description of the specifications and embodiments is intended to explain the scope of protection of this utility model, but does not constitute a limitation on the scope of protection of this utility model. Modifications, equivalent substitutions, or other improvements to the embodiments of this utility model or a portion thereof that can be obtained by those skilled in the art through logical analysis, reasoning, or limited experimentation, based on the teachings of this utility model or the foregoing embodiments, should all be included within the scope of protection of this utility model.

Claims

1. A soft-pack battery edge-sealing bending device, characterized in that: The device includes a bending production line (1), a transfer platform (10) is arranged on the bending production line (1), a fixing fixture (4) for placing the battery cell (11) is provided on the transfer platform (10), a bending roller (14) is provided above the bending production line (1), the bending roller (14) is installed on a lifting device, a double pressure head (2) is provided at the end of the bending production line (1), the double pressure head (2) includes a rotary drive device (20), the output end of the rotary drive device (20) is connected to a pressure testing center seat (21), a cold pressure head (22) and a hot pressure head (23) are arranged on both sides of the pressure testing center seat (21), the cold pressure head (22) and the hot pressure head (23) are at the same height as the sealing edge of the battery cell (11), the pressure testing center seat (21) includes a middle rotating seat, a compression elastic device (24) is connected between the cold pressure head (22) and the hot pressure head (23) and the middle rotating seat, and a pressure sensor is provided at one end of the compression elastic device (24).

2. The soft-pack battery edge-sealing bending device according to claim 1, characterized in that: The bending production line (1) is located on one side of the first straight module (3), and the first straight module (3) is equipped with a handling robot arm (30) for handling the battery cell (11).

3. The soft-pack battery edge-sealing bending device according to claim 2, characterized in that: A feeding line (33) is provided on one side of the bending production line (1). A handling station is provided on both the side of the bending production line (1) and the feeding line (33). The handling station is arranged within the stroke range of the handling robot arm (30).

4. The soft-pack battery edge-sealing bending device according to claim 3, characterized in that: On the other side of the bending assembly line (1), there is a discharge assembly line (35), and a discharge station is provided on the discharge assembly line (35). The discharge station is located within the stroke range of the handling robot arm (30).

5. The soft-pack battery edge-sealing bending device according to claim 4, characterized in that: A defective production line (34) is provided on one side of the discharge production line (35). The defective production line (34) is provided with a feeding station. The feeding station, the discharge station, and the handling station are located on the same straight line.

6. The soft-pack battery edge-sealing bending device according to claim 1, characterized in that: A dispensing device (12) and a vision lens (13) are sequentially arranged above the bending production line (1).

7. The soft-pack battery edge-sealing bending device according to claim 6, characterized in that: The dispensing device (12) is installed in the second linear module (31), and the vision lens (13) is installed in the third linear module (32). The arrangement directions of the second linear module (31) and the third linear module (32) are parallel to the arrangement direction of the first linear module (3).

8. The soft-pack battery edge-sealing bending device according to claim 7, characterized in that: The first linear module (3), the second linear module (31), and the third linear module (32) are all arranged on the gantry (36).

9. A soft-pack battery edge-sealing bending device according to any one of claims 1-8, characterized in that: The compression elastic element (24) is symmetrically arranged on both sides of the middle rotating seat. The inner sides of the cold pressure head (22) and the hot pressure head (23) are provided with accommodating recesses (28) corresponding to the pressure sensors. The hot pressure head (23) is provided with a heating unit. The middle rotating seat is provided with a pressure controller.

10. A soft-pack battery edge-sealing bending device according to claim 9, characterized in that: The compression elastic element (24) is fitted with a guide rod (50), and the intermediate rotating seat is provided with a guide hole corresponding to the guide rod (50).

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