Battery cell conveying and detecting device

Abstract

The utility model discloses a battery cell conveying and detecting device which comprises a hot-pressing shaping assembly, a resistance testing pressing block, a shape detecting assembly and a battery cell conveying assembly. Wherein the hot-pressing shaping assembly is used for completing a hot-pressing shaping process of a battery cell, the resistance test pressing block is used for completing resistance detection of the battery cell, the appearance detection assembly is used for detecting whether the appearance of the battery cell meets a design standard or not, and the battery cell conveying assembly is used for conveying the battery cell into the hot-pressing shaping assembly and the appearance detection assembly. According to the battery cell conveying and detecting device, the procedures of hot-pressing shaping, resistance testing and boundary dimension detecting are integrated into the same equipment, the number of stations of all the procedures is kept consistent, the structure of the battery cell conveying assembly is simplified, and the battery cell production and detecting efficiency is improved. The utility model relates to the technical field of battery cell production and manufacturing.

Description

Technical Field

[0001] The present invention relates to the technical field of core production and manufacturing, and particularly relates to a core conveying and detecting device. Background Art

[0002] At present, the winding process is the mainstream process for manufacturing lithium battery cores. Winding equipment usually uses a winding needle to wind the electrode sheet and the separator into a core. After winding, the core is transferred to the subsequent section for processing after passing through processes such as hot pressing and shaping, resistance testing, and external dimension detection. In order to meet the requirements of mass production for production efficiency, the current processes of hot pressing and shaping, resistance testing, and external dimension detection for cores have all been automated, and automated equipment can complete the conveying and detecting work of the cores.

[0003] However, the station settings of different processes may be different. For example, when both the hot pressing and shaping process and the resistance testing process are double stations, and the external dimension detection process is a single station, additional conveying equipment is required to transfer the two cores in the double stations to the external dimension detection equipment one by one. This undoubtedly slows down the overall production rhythm, and since the stations cannot be adapted, corresponding conveying equipment needs to be designed, which also increases the cost of the production device and is not conducive to cost reduction and efficiency improvement. Summary of the Invention

[0004] The present invention aims to at least solve one of the technical problems existing in the prior art. For this purpose, the present invention provides a core conveying and detecting device, in which the stations in each process are adapted to each other, reducing the design difficulty of the conveying equipment and improving the overall production efficiency of the core.

[0005] According to an embodiment of the present invention, the core conveying and detecting device includes:

[0006] A hot pressing and shaping assembly, which includes a hot pressing power mechanism and a pressing plate mechanism. The pressing plate mechanism includes an upper pressing plate and a lower pressing plate, and the hot pressing power mechanism drives the lower pressing plate to approach the upper pressing plate to complete the hot pressing and shaping of the core;

[0007] A resistance testing pressing block, which is installed on the pressing plate mechanism. When the pressing plate mechanism completes the hot pressing and shaping of the core, the resistance testing pressing block completes the resistance detection of the core;

[0008] An external dimension detection assembly, which includes a background light source and an external dimension detection mechanism. The external dimension detection mechanism includes a core limiting structure and a camera. The core limiting structure is arranged between the camera and the background light source and is used to fix the core;

[0009] A core conveying assembly, which is used to convey the core to the hot pressing and shaping assembly and the external dimension detection assembly;

[0010] Among them, the number of the pressing plate mechanism and the outer shape detection mechanism is the same and is at least two.

[0011] The battery cell conveying and detecting device according to the embodiment of the present invention has at least the following beneficial effects: The battery cell conveying and detecting device integrates the processes of hot pressing and shaping, resistance testing, and outer shape dimension detection into the same device, and the number of stations for each process remains the same, simplifying the structure of the battery cell conveying assembly and improving the production and detection efficiency of the battery cell.

[0012] According to some embodiments of the present invention, the hot pressing power mechanism includes a lead screw and a lead screw seat, the lead screw seat is provided with a threaded hole and is adaptively connected to the lead screw, and the lead screw seat is connected to the lower pressing plate.

[0013] According to some embodiments of the present invention, the hot pressing power mechanism further includes a motor, an output shaft of the motor is connected to the lead screw, and the motor drives the lead screw to rotate to drive the lower pressing plate to lift.

[0014] According to some embodiments of the present invention, the hot pressing power mechanism further includes a transmission belt, pulley wheels are installed at an output shaft of the motor and at an end of the lead screw, and the transmission belt is wound around each of the pulley wheels to achieve belt transmission.

[0015] According to some embodiments of the present invention, the number of the resistance testing pressing blocks is two and they are respectively installed on the upper pressing plate and the lower pressing plate. When the upper pressing plate and the lower pressing plate approach each other, the two resistance testing pressing blocks can contact each other to complete the resistance detection of the battery cell.

[0016] According to some embodiments of the present invention, the battery cell conveying assembly includes a first clamping jaw, a second clamping jaw, and a clamping power mechanism, and the clamping power mechanism drives the first clamping jaw and the second clamping jaw to approach each other to clamp the battery cell.

[0017] According to some embodiments of the present invention, the battery cell conveying assembly further includes a lifting mechanism, and the lifting mechanism is connected to the first clamping jaw and the second clamping jaw and drives them to lift.

[0018] According to some embodiments of the present invention, the clamping power mechanism includes a driving cylinder, a belt, and two pulley wheels, the belt is wound around the two pulley wheels, and the driving cylinder drives one of the pulley wheels to rotate; the central axes of the two pulley wheels form a symmetry plane, the belt includes a first part and a second part that are symmetric about the symmetry plane, the first clamping jaw is fixedly installed on the first part of the belt, and the second clamping jaw is fixedly installed on the second part of the belt.

[0019] According to some embodiments of the present invention, the number of the first clamping jaws and the second clamping jaws is plural, and each of the first clamping jaws is connected to each other, and each of the second clamping jaws is connected to each other.

[0020] According to some embodiments of the present invention, the battery cell conveying and detecting device further includes a defective product transferring mechanism, and the defective product transferring mechanism includes a conveyor belt, a defective product recycling box and a recycling manipulator. The conveyor belt is connected to the battery cell conveying assembly, the defective product recycling box is installed on one side of the conveyor belt, and the recycling manipulator is installed above the conveyor belt and transfers the defective battery cells to the defective product recycling box on one side.

[0021] Some additional aspects and advantages of the present invention will be given in the following description, some will become obvious from the following description, or will be understood through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The present invention will be further described below in conjunction with the drawings and embodiments, wherein:

[0023] Figure 1 is a three-dimensional view of the battery cell conveying and detecting device according to an embodiment of the present invention;

[0024] Figure 2 is a side view of the battery cell conveying and detecting device according to an embodiment of the present invention;

[0025] Figure 3 is a three-dimensional view of the hot pressing and shaping assembly 100 in the battery cell conveying and detecting device according to an embodiment of the present invention;

[0026] Figure 4 is a cross-sectional view of the hot pressing and shaping assembly 100 in the battery cell conveying and detecting device according to an embodiment of the present invention;

[0027] Figure 5 is a three-dimensional view of the appearance detecting assembly 300 in the battery cell conveying and detecting device according to an embodiment of the present invention;

[0028] Figure 6 is a three-dimensional view of the battery cell conveying assembly 400 in the battery cell conveying and detecting device according to an embodiment of the present invention

[0029] Figure 7 is Figure 6 a partial enlarged view of part A in

[0030] Figure 8 is a cross-sectional view of the battery cell conveying assembly 400 in the battery cell conveying and detecting device according to an embodiment of the present invention;

[0031] Figure 9 is a three-dimensional view of the defective product transferring mechanism 500 in the battery cell conveying and detecting device according to an embodiment of the present invention.

[0032] Reference numerals: 100 - hot pressing and shaping assembly, 110 - hot pressing power mechanism, 111 - lead screw, 112 - lead screw seat, 113 - motor, 114 - conveyor belt, 120 - pressing plate mechanism, 121 - upper pressing plate, 122 - lower pressing plate, 200 - resistance testing pressing block, 300 - outer shape detection assembly, 310 - background light source, 320 - outer shape detection mechanism, 321 - battery core limiting mechanism, 322 - camera, 400 - battery core conveying assembly, 410 - first jaw, 420 - second jaw, 430 - clamping power mechanism, 431 - driving cylinder, 432 - belt, 433 - pulley, 440 - lifting mechanism, 500 - defective product transfer mechanism, 510 - conveyor belt, 520 - defective product recycling box, 530 - recycling manipulator, 531 - suction cup, 600 - feeding mechanism, 700 - battery core. Detailed implementation manners

[0033] The embodiments of the present invention will be described in detail below. The examples of the embodiments are shown in the drawings, where the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary and are only used to explain the present invention and should not be construed as a limitation to the present invention.

[0034] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by terms such as up, down, front, back, left, right, etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the present invention.

[0035] In the description of the present invention, the meaning of several is more than one, and the meaning of multiple is more than two. Understandings such as greater than, less than, exceeding, etc. do not include the present number, and understandings such as above, below, within, etc. include the present number. If there is a description of first and second, it is only for the purpose of distinguishing technical features and should not be construed as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features or implicitly indicating the sequence relationship of the indicated technical features.

[0036] In the description of the present invention, unless otherwise clearly defined, words such as setting, installing, connecting, etc. should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above words in the present invention in combination with the specific content of the technical solution.

[0037] In the description of the present invention, the description with reference to terms such as "one embodiment", "some embodiments", "schematic embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples.

[0038] Currently, the winding process is the mainstream process for manufacturing lithium battery cells. The winding equipment usually uses a winding needle to wind the electrode sheet and the separator into a cell. After winding, the cell is transferred to the subsequent section for processing after passing through processes such as hot pressing and shaping, resistance testing, and external dimension detection. In order to meet the requirements of mass production for production efficiency, the current processes of hot pressing and shaping, resistance testing, and external dimension detection for cells have all been automated, and automated equipment can complete the conveying and detection of cells.

[0039] However, the station settings of different processes may be different. For example, when both the hot pressing and shaping process and the resistance testing process are double stations, while the external dimension detection process is a single station, additional conveying equipment is required to transfer the two cells in the double stations to the external dimension detection equipment one by one. This undoubtedly slows down the overall production rhythm, and since the stations cannot be adapted, corresponding conveying equipment needs to be designed, which also increases the cost of the production device and is not conducive to cost reduction and efficiency improvement.

[0040] In response to this, the present application proposes a cell conveying and detection device. This cell conveying and detection device integrates the processes of hot pressing and shaping, resistance testing, and external dimension detection into the same equipment, and the number of stations for each process remains the same, simplifying the structure of the cell conveying component and improving the production and detection efficiency of cells.

[0041] Referring to Figure 1 and Figure 2 , a cell conveying and detection device in an embodiment of the present application includes a hot pressing and shaping component 100, a resistance testing block 200, an external dimension detection component 300, and a cell conveying component 400. Among them, the hot pressing and shaping component 100 is used to complete the hot pressing and shaping process of the cell 700, the resistance testing block 200 is used to complete the resistance detection of the cell 700, the external dimension detection component 300 is used to detect whether the external dimension of the cell 700 meets the design standard, and the cell conveying component 400 is used to convey the cell 700 to the hot pressing and shaping component 100 and the external dimension detection component 300.

[0042] Specifically, referring to Figure 3, the hot pressing and shaping assembly 100 includes a hot pressing power mechanism 110 and a pressing plate mechanism 120. The pressing plate mechanism 120 includes an upper pressing plate 121 and a lower pressing plate 122. The hot pressing power mechanism 110 drives the lower pressing plate 122 to approach the upper pressing plate 121 to complete the hot pressing and shaping of the battery cell 700.

[0043] The hot pressing power mechanism 110 can adopt a hydraulic press, a pneumatic press or other power equipment driven by a motor. In this embodiment, referring to Figure 4 , the hot pressing power mechanism 110 includes a lead screw 111, a lead screw seat 112 and a motor 113. The lead screw seat 112 is provided with a threaded hole and is adaptively connected to the lead screw 111. The lead screw seat 112 is connected to the lower pressing plate 122, and the output shaft of the motor 113 is connected to the lead screw 111. Thus, the motor 113 drives the lead screw 111 to rotate to drive the lower pressing plate 122 to move up and down.

[0044] Furthermore, the output shaft of the motor 113 can be directly connected to the lead screw 111, or indirectly connected to the lead screw 111 through transmission methods such as belt drive, chain drive or gear drive, so as to change the transmission ratio between the motor 113 and the lead screw 111. In this embodiment, the hot pressing power mechanism 110 further includes a transmission belt 114. Belt pulleys are installed at the output shaft of the motor 113 and the end of the lead screw 111, and the transmission belt 114 is wound around each belt pulley to achieve belt drive.

[0045] The resistance test pressing block 200 is installed on the pressing plate mechanism 120. While the pressing plate mechanism 120 completes the hot pressing and shaping of the battery cell 700, the resistance test pressing block 200 completes the resistance detection of the battery cell 700. Specifically, the number of the resistance test pressing blocks 200 is two and they are respectively installed on the upper pressing plate 121 and the lower pressing plate 122. During the process that the upper pressing plate 121 and the lower pressing plate 122 approach each other for hot pressing and shaping, the two resistance test pressing blocks 200 can contact each other to complete the resistance detection of the battery cell 700, thereby integrating the two processes of hot pressing and shaping and resistance detection, and improving the overall production and manufacturing efficiency of the battery cell 700.

[0046] Referring to Figure 5 , the shape detection assembly 300 includes a background light source 310 and a shape detection mechanism 320. Among them, the shape detection mechanism 320 includes a battery cell limiting structure 321 and a camera 322. The battery cell limiting structure 321 is arranged between the camera 322 and the background light source 310 and is used to fix the battery cell 700. The background light source 310 can emit light and illuminate the battery cell 700. Due to the illumination of the background light source 310, the defects on the contour of the battery cell 700 are more easily recognized by the camera 322, thereby improving the shape detection accuracy.

[0047] It should be noted that the number of pressing plate mechanisms 120 and shape detection mechanisms 320 is the same and at least two, so that the number of workstations in each process remains consistent, avoiding the need for an additional conveying mechanism to coordinate when some processes have double workstations while others have single workstations, and improving the overall production efficiency of the battery cells.

[0048] Referring to Figures 6 to 8 , the battery cell conveying assembly 400 includes a first jaw 410, a second jaw 420, a clamping power mechanism 430 and a lifting mechanism 440. The clamping power mechanism 430 drives the first jaw 410 and the second jaw 420 to approach each other to clamp the battery cell 700. The lifting mechanism 440 is connected to the first jaw 410 and the second jaw 420 and drives them to lift. Furthermore, the lifting mechanism 440 and the clamping power mechanism 430 cooperate to be able to grasp the battery cell 700 and move it.

[0049] Specifically, for the driving method of the clamping power mechanism 430, a cylinder, a motor or a hydraulic press can be used for driving. In this embodiment, the clamping power mechanism 430 includes a driving cylinder 431, a belt 432 and two belt pulleys 433. The belt 432 is wound around the two belt pulleys 433, and the driving cylinder 431 drives one of the belt pulleys 433 to rotate. It should be noted that with the central axes of the two belt pulleys 433 forming a symmetry plane, the belt 432 includes a first part and a second part that are symmetric about this symmetry plane. The first jaw 410 is fixedly installed on the first part of the belt 432, and the second jaw 420 is fixedly installed on the second part of the belt 432. Thus, when the belt pulley 433 rotates, the first part and the second part of the belt 432 move in opposite directions, driving the first jaw 410 and the second jaw 420 to approach or separate from each other, and controlling the opening and closing of the two jaws.

[0050] Furthermore, the number of the first jaws 410 and the second jaws 420 is multiple, and the respective first jaws 410 are connected to each other, and the respective second jaws 420 are connected to each other, so as to be able to complete the clamping of multiple battery cells 700 simultaneously.

[0051] Furthermore, this battery cell conveying and detecting device further includes a defective product transfer mechanism 500 and a feeding mechanism 600. Among them, the feeding mechanism 600 is connected to the battery cell conveying assembly 400 to complete the feeding work of the battery cell 700. Referring to Figure 9 , the defective product transfer mechanism 500 includes a conveyor belt 510, a defective product recycling box 520 and a recycling manipulator 530. The conveyor belt 510 is connected to the battery cell conveying assembly 400, the defective product recycling box 520 is installed on one side of the conveyor belt 510, and the recycling manipulator 530 is installed above the conveyor belt and transfers the defective battery cells 700 to the defective product recycling box 520 on one side.

[0052] Specifically, the recycling manipulator 530 can be a multi-degree-of-freedom manipulator or a gantry manipulator based on an xy linear guide. A suction cup 531 is installed at the end of the recycling manipulator 530, which is connected to an external cylinder, and the battery cell 700 is sucked by adsorption to complete the transfer of the battery cell 700.

[0053] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. Within the scope of knowledge possessed by those of ordinary skill in the art, various changes can be made without departing from the spirit of the present invention. In addition, the embodiments of the present invention and the features in the embodiments can be combined with each other without conflict.

Claims

1. A battery cell conveying and detecting device, characterized in that, Including: A hot press forming assembly, which includes a hot press power mechanism and a platen mechanism. The platen mechanism includes an upper platen and a lower platen. The hot press power mechanism drives the lower platen to approach the upper platen to complete the hot press forming of the battery cell. A resistance test block, which is installed on the platen mechanism. While the platen mechanism completes the hot press forming of the battery cell, the resistance test block completes the resistance detection of the battery cell. An outer shape detection assembly, which includes a background light source and an outer shape detection mechanism. The outer shape detection mechanism includes a battery cell limiting structure and a camera. The battery cell limiting structure is arranged between the camera and the background light source and is used to fix the battery cell. A battery cell conveying assembly, which is used to convey the battery cell to the hot press forming assembly and the outer shape detection assembly. Wherein, the number of the platen mechanism and the outer shape detection mechanism is the same and is at least two.

2. The battery cell conveying and detecting device according to claim 1, wherein: The hot press power mechanism includes a lead screw and a lead screw seat. The lead screw seat is provided with a threaded hole and is adaptively connected to the lead screw. The lead screw seat is connected to the lower platen.

3. The cell conveying and detecting device according to claim 2, characterized in that: The hot press power mechanism further includes a motor. The output shaft of the motor is connected to the lead screw. The motor drives the lead screw to rotate to drive the lower platen to lift.

4. The cell conveying and detecting device according to claim 3, characterized in that: The hot press power mechanism further includes a transmission belt. Belt pulleys are installed at the output shaft of the motor and the end of the lead screw. The transmission belt is wound around each belt pulley to achieve belt drive.

5. The cell conveying and detecting device according to claim 1, wherein: The number of the resistance test blocks is two and they are respectively installed on the upper platen and the lower platen. When the upper platen and the lower platen approach each other, the two resistance test blocks can contact each other to complete the resistance detection of the battery cell.

6. The cell conveying and detecting device according to claim 1, wherein: The battery cell conveying assembly includes a first jaw, a second jaw and a clamping power mechanism. The clamping power mechanism drives the first jaw and the second jaw to approach each other to clamp the battery cell.

7. The cell conveying and detecting device according to claim 6, characterized in that: The battery cell conveying assembly further includes a lifting mechanism. The lifting mechanism is connected to the first jaw and the second jaw and drives them to lift.

8. The cell conveying and detecting device according to claim 6, characterized in that: The clamping power mechanism includes a driving cylinder, a belt and two belt pulleys. The belt is wound around the two belt pulleys. The driving cylinder drives one of the belt pulleys to rotate. The central axes of the two belt pulleys form a symmetry plane. The belt includes a first part and a second part that are symmetric about the symmetry plane. The first jaw is fixedly installed on the first part of the belt, and the second jaw is fixedly installed on the second part of the belt.

9. The battery cell conveying and detecting device according to claim 8, wherein: The number of the first jaws and the second jaws is multiple. Each of the first jaws is connected to each other, and each of the second jaws is connected to each other.

10. The battery cell conveying and detecting device according to claim 1, characterized in that: The battery cell conveying and detecting device further includes a defective product transfer mechanism. The defective product transfer mechanism includes a conveyor belt, a defective product recycling box and a recycling manipulator. The conveyor belt is connected to the battery cell conveying assembly. The defective product recycling box is installed on one side of the conveyor belt. The recycling manipulator is installed above the conveyor belt and transfers the defective battery cells to the defective product recycling box on one side.

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