Correction wheel and battery piece correction system

Abstract

The utility model provides a correction wheel and a battery piece correction system. The correction wheel comprises a wheel body internally provided with a containing cavity and a supporting rod rotationally connected with the wheel body through a bearing. A piezoelectric element is arranged on the side wall of the side, away from the supporting rod, of the containing cavity, an energy storage element is arranged between the side wall of the side, close to the supporting rod, of the containing cavity and the piezoelectric element, and the piezoelectric element is used for charging the energy storage element when the wheel body deforms. The supporting rod is provided with a transmission electrode connected with the energy storage element, and the transmission electrode is used for transmitting electric signals of the energy storage element. The number of the wheel bodies is two, the two wheel bodies are oppositely arranged on the two sides of the supporting rod, and at least two bearings are arranged between each wheel body and the supporting rod. According to the invention, deviation correction can be carried out on the battery piece, hidden cracks of the battery piece are avoided, and the production quality of the battery piece is improved.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of battery pieces, and particularly relates to a correction wheel and a battery piece correction system. BACKGROUND

[0002] On a photovoltaic battery piece production line, an automatic transmission system plays a vital role, and an automatic transmission belt is usually required to be used to transmit battery pieces. In actual automatic transmission, since it is difficult to ensure an absolute horizontal state when the transmission belt is installed, there may be an extremely slight inclination angle, which causes the battery pieces to be subjected to uneven lateral forces in the transmission process, thereby causing the position of the battery pieces to be deviated.

[0003] In the prior art, the position of the battery pieces is usually corrected by means of setting guide wheels or guide rails on both sides of the transmission belt. However, when the position of the battery pieces is deviated too much in the belt, the battery pieces will be scratched with the correction wheel, so that the battery pieces are cracked but not completely broken after being corrected, and the appearance is not easy to be found, thereby being mixed into qualified battery pieces, and affecting the quality and yield of the whole batch of battery pieces. CONTENT OF THE UTILITY MODEL

[0004] The application provides a correction wheel and a battery piece correction system, which can correct the deviation of the battery pieces, avoid the battery pieces being cracked, and improve the production quality of the battery pieces.

[0005] In order to solve the above technical problems, the application provides a correction wheel, which comprises a wheel body provided with a containing cavity, and a supporting rod connected with the wheel body through a bearing;

[0006] A piezoelectric element is arranged on the side wall of the containing cavity away from the supporting rod, and an energy storage element is arranged between the side wall of the containing cavity close to the supporting rod and the piezoelectric element, and the piezoelectric element is used to charge the energy storage element when the wheel body is deformed;

[0007] A transmission electrode connected with the energy storage element is arranged on the supporting rod, and the transmission electrode is used to transmit the electric signal of the energy storage element.

[0008] As a further improvement of the application, the energy storage element is a capacitor, and the capacitor comprises a first capacitor electrode plate arranged close to the piezoelectric element, and a second capacitor electrode plate arranged opposite to the first capacitor electrode plate and arranged close to the supporting rod.

[0009] As a further improvement of the application, the transmission electrode is a ring-shaped transmission electrode, and the ring-shaped transmission electrode is electrically connected with the second capacitor plate.

[0010] As a further improvement of the application, the piezoelectric element is a piezoelectric sheet.

[0011] As a further improvement of the present application, the outer side wall of the wheel body away from the supporting rod is provided with a buffer film.

[0012] As a further improvement of the present application, the wheel body is made of flexible material.

[0013] As a further improvement of the present application, the number of the wheel bodies is two, and two bearings are rotatably connected to the supporting rod, and the wheel bodies are arranged between the two bearings to be rotatably connected to the supporting rod through the bearings.

[0014] The present application also provides a battery piece correction system, which comprises a conveying belt, and a plurality of the correction wheels described in any of the above are arranged on both sides of the conveying belt.

[0015] The correction wheel is arranged close to the conveying belt on the side provided with the piezoelectric element.

[0016] As a further improvement of the present application, a sensor is arranged below the conveying belt to detect whether the battery piece is conveyed to a preset position.

[0017] As a further improvement of the present application, a master controller is further included and connected to the conveying electrodes, and the master controller is used to receive the electrical signals transmitted by each of the conveying electrodes.

[0018] The correction wheel and the battery piece correction system provided by the present application have the bearings arranged between the wheel body and the supporting rod, which can release the force through rotation when the battery piece collides with the wheel body, reduce the risk of the battery piece being broken into pieces, and reduce the friction between the wheel body and the supporting rod to avoid wear and damage between the wheel body and the supporting rod. The piezoelectric element and the energy storage element are arranged in the accommodating cavity, the energy storage element is charged by the energy storage element when the wheel body is deformed, the conveying electrodes are arranged on the supporting rod and connected to the energy storage element, the electrical signals on the energy storage element can be output through the conveying electrodes, so that the specific collision condition between the battery piece and the wheel body can be known according to the different electrical signal sizes, and it can be judged whether the battery piece will be cracked. The present application can not only correct the battery piece to avoid the battery piece being cracked, but also can judge whether the battery piece is cracked according to the actual electrical signal size, avoid the abnormal battery piece mixed into the normal qualified battery piece, and improve the yield of the same batch of battery pieces. BRIEF DESCRIPTION OF DRAWINGS

[0019] In order to more clearly illustrate the technical solutions of the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or prior art description. Obviously, the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained without creative labor.

[0020] Figure 1 A structural schematic diagram of a battery piece correcting system provided in the related art;

[0021] Figure 2 A structural schematic diagram of a correcting wheel provided in the embodiments of the present application;

[0022] Figure 3 A structural schematic diagram of a battery piece correcting system provided in the embodiments of the present application;

[0023] Explanation of reference signs:

[0024] 10-wheel body; 11-piezoelectric element; 12-energy storage element; 121-first capacitor electrode sheet; 122-second capacitor electrode sheet; 13-buffer film; 14-bearing; 20-supporting rod; 21-transmission electrode; 30-transmission belt; 31-inductor; 100-battery piece. DETAILED DESCRIPTION

[0025] In order to make the purpose, technical solutions and advantages of the present application more clear, the following will further describe the present application in combination with the drawings and specific embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application, and are not used to limit the present application.

[0026] In the description of the present application, the meaning of "multiple" is at least two, such as two, three, etc., unless otherwise explicitly and specifically limited. All directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present application are only used to explain the relative positional relationship, movement condition, etc. between components in a certain posture (as shown in the drawings), and if the certain posture changes, the directional indications also change accordingly. In addition, the terms "include" and "have" and any variations thereof are intended to cover non-exclusive inclusion.

[0027] In order to make the description of the present disclosure more detailed and complete, the following will make an illustrative description for the embodiments and specific embodiments of the present application; but this is not the only form of implementation or use of the specific embodiments of the present application. The embodiments include the features of multiple specific embodiments and the method steps and their order used to construct and operate these specific embodiments. However, other specific embodiments can also be used to achieve the same or equivalent functions and step orders.

[0028] In the photovoltaic cell production line, the automatic transmission system plays a crucial role, and it is usually necessary to use an automatic transmission belt to transport the cell 100; in the actual automatic transmission process, due to the difficulty in ensuring the absolute horizontal state of the transmission belt during installation, there may be a very slight inclination angle, which makes the cell 100 subjected to uneven lateral force during transmission, thereby causing its position to deviate.

[0029] At the same time, the running speed of the transmission belt is not constant, and is affected by factors such as motor performance, voltage fluctuation, and load change, so the belt speed will fluctuate to a certain extent. When the belt speed suddenly increases or decreases, the friction between the cell 100 and the belt will also change accordingly, which will cause the cell 100 to slip, and this slip will often be accompanied by the deviation of the cell 100 on the belt, which seriously affects the accuracy and stability of the subsequent production process.

[0030] Please refer to Figure 1 For the structure diagram of the cell correction system provided in the related art, most of the prior art corrects the position of the cell 100 by setting guide wheels or guide rails on both sides of the transmission belt 30. However, when the position of the cell 100 in the belt deviates too much, it will rub against the correction wheel, causing the cell 100 to crack after correction but not completely break, which is not easy to be found and thus mixed into the qualified cells 100, affecting the quality and yield of the entire batch of cells 100.

[0031] Based on the above technical problems, please refer to Figures 2-3 The embodiments of the present application provide a correction wheel and a cell correction system, which can correct the deviation of the cell and avoid the cracking of the cell, thereby improving the production quality of the cell.

[0032] Please refer to Figure 2 For the structure diagram of the correction wheel provided in the embodiments of the present application, specifically the cross-sectional view of the correction wheel, it can be observed that the correction wheel provided in the present application includes a wheel body 10 having an accommodating cavity inside and a support rod 20 connected with the wheel body 10 through a bearing 14. When the cell 100 collides with the wheel body 10, the bearing 14 provided between the wheel body 10 and the support rod 20 can not only buffer the cell 100, but also reduce the friction between the wheel body 10 and the support rod 20, thereby avoiding the wear and damage between the wheel body 10 and the support rod 20.

[0033] In the embodiments of the present application, the wheel body 10 and the support rod 20 are in a rotatable connection relationship, which can make the wheel body 10 rotate relative to the support rod 20 when the cell 100 collides with the wheel body 10, thereby unloading through rotation and reducing the risk of cell 100 breaking.

[0034] As an optional implementation, the application is provided with a piezoelectric element 11 and an energy storage element 12 inside the accommodating cavity. The piezoelectric element 11 is arranged on the side wall of the accommodating cavity away from the support rod 20, and the energy storage element 12 is arranged between the side wall of the accommodating cavity close to the support rod 20 and the piezoelectric element 11. Due to the characteristics of the piezoelectric element 11 itself, it will charge the energy storage element 12 when the wheel body 10 is deformed.

[0035] The piezoelectric element 11 generally has positive piezoelectric effect and negative piezoelectric effect. When the piezoelectric element 11 is subjected to pressure applied on its surface, internal polarization phenomenon occurs, and corresponding electric charge appears on its surface. When the external force is removed, it returns to the uncharged state. The amount of electric charge generated by the piezoelectric element 11 under force is generally proportional to the size of the external force.

[0036] The application utilizes the positive piezoelectric effect of the piezoelectric element 11, which is arranged inside the wheel body 10, and the energy storage element 12 is arranged close to the piezoelectric element 11. When the wheel body 10 is deformed, the piezoelectric element 11 arranged inside the wheel body 10 will generate electric charge, thereby charging the energy storage element 12.

[0037] Further, the application is provided with a transmission electrode 21 connected with the energy storage element 12 on the support rod 20. The transmission electrode 21 can output the electric signal on the energy storage element 12, which can be received by the host controller. It can be understood that different deformation conditions of the wheel body 10 will output different electric signals, so the host controller can know the specific collision condition between the battery sheet 100 and the wheel body 10 according to the different electric signal size, thereby judging whether the battery sheet 100 will be cracked.

[0038] For example, the above-mentioned energy storage element 12 can be set in the form of a capacitor. The capacitor is generally composed of two mutually close but insulated capacitor electrodes. The capacitor can store the electric charge generated by the piezoelectric element 11.

[0039] In order to save space, the application sets the capacitor in the form of two capacitor electrode sheets. The capacitor includes a first capacitor electrode sheet 121 arranged close to the piezoelectric element 11, and a second capacitor electrode sheet 122 arranged opposite to the first capacitor electrode sheet 121 and arranged close to the support rod 20. The second capacitor electrode sheet 122 is connected with the transmission electrode 21.

[0040] When the wheel body 10 is deformed after colliding with the battery piece 100, the piezoelectric element 11 will charge the capacitor, and the transmission electrode 21 connected to the capacitor will output the electrical signal on the energy storage element 12, and the main control unit can know the specific collision between the battery piece 100 and the wheel body 10 according to the different electrical signal size, so as to judge whether the battery piece 100 will crack.

[0041] Optionally, the piezoelectric element 11 can be provided in the form of a piezoelectric sheet, or the piezoelectric element 11 can be provided in the form of a plurality of piezoelectric sheet layers, as long as the piezoelectric element 11 can charge the energy storage element 12 when the wheel body 10 collides, and the specific form of the piezoelectric element 11 is not limited in the present application.

[0042] Exemplarily, the transmission electrode 21 can be provided in the form of a ring-shaped transmission electrode 21, and the ring-shaped transmission electrode 21 is electrically connected between the second capacitor sheet, so as to output the electrical signal on the energy storage element 12.

[0043] It should be noted that since the piezoelectric element 11 charges the energy storage element 12 when the wheel body 10 is deformed, it is necessary to ensure that the wheel body 10 is made of flexible material, such as rubber material, thermoplastic elastomer material, etc. The specific material of the wheel body 10 is not limited in the present application, and in principle, it can be deformed as long as it is flexible.

[0044] As an optional embodiment, the buffer film 13 is provided on the outer side wall of the wheel body 10 away from the support rod 20, so as to ensure that the battery piece 100 first contacts the buffer film 13 when contacting the wheel body 10, thereby reducing the risk of cracking or fragmentation of the battery piece 100 when colliding with the correction wheel. Exemplarily, the buffer film 13 can be made of polyethylene terephthalate (PET) material, and it is also feasible to provide the buffer film 13 with other materials, which should be known to those skilled in the art.

[0045] In an optional embodiment, the number of wheel bodies 10 can be two, and the two wheel bodies 10 are rotatably connected to the two sides of the support rod 20. At least two bearings 14 are provided between each wheel body 10 and the support rod 20, and the transmission electrode 21 provided in the support rod 20 is connected to the energy storage element 12 provided in the two wheel bodies 10. In this way, whether the battery piece 100 contacts the left side or the right side of the wheel body 10, it can be converted into a corresponding electrical signal, and the specific conversion process of the electrical signal is not described in detail in the present application.

[0046] It needs to be explained that the wheel body 10 is rotatably connected to the outer side wall of the support rod 20, and the rotatable connection between the wheel body 10 and the support rod 20 is not achieved by penetratingly arranging, but is achieved by fixedly connecting the rotatable bearing 14 on the support rod 20, so that the wheel body 10 can rotate relative to the support rod 20 when the battery piece 100 contacts the wheel body 10. Preferably, two bearings 14 are arranged on the outer side wall of the support rod 20, and the wheel body 10 is arranged between the two bearings 14. For details, please refer to Figure 2 The above-described positional relationship should be known to those skilled in the art.

[0047] Based on the above-mentioned correction wheel, the application further provides a battery piece correction system. Please refer to Figure 3 The structure diagram of the battery piece correction system provided by the embodiment of the application is shown in the figure, and the battery piece correction system comprises a transmission belt 30. A plurality of correction wheels are arranged on both sides of the transmission belt 30 along the transmission direction of the transmission belt 30. In the correction wheel, the side close to the transmission belt 30 is arranged to be provided with a piezoelectric element 11.

[0048] Further, the application is provided with an inductor 31 below the transmission belt 30 for detecting whether the battery piece 100 is transmitted to a preset position. It can be understood that the position of the inductor 31 is relatively fixed and will not move with the transmission belt 30. Preferably, the inductor 31 is arranged at the central position of the transmission belt, so as to sense whether the battery piece 100 is pushed to the central position of the transmission belt 30.

[0049] Of course, the transmission belt 30 can also be controlled to transmit after the inductor 31 senses that the battery piece 100 is pushed to the central position, so as to avoid the driving force of the transmission belt 30 in the transmission direction affecting the left and right correction operations of the battery piece 100, and increase the impact strength between the battery piece 100 and the correction wheel.

[0050] As an optional embodiment, the above-mentioned battery piece correction system further comprises a main control unit connected with the transmission electrode 21, and the main control unit is used for receiving the electric signal transmitted by each transmission electrode 21.

[0051] In the embodiment of the application, the size of the electric signal when the battery piece 100 is broken or cracked can be tested in advance, and the electric signal is taken as a limit value. When the electric signal exceeding the limit value appears in the normal production process, an alarm can be given, and the machine can also be stopped, so as to avoid that the abnormal battery piece 100 is mixed into the normal qualified battery piece 100.

[0052] Exemplarily, the above master controller can be set as a common controller form such as an MCU (Microcontroller Unit), a PFGA (Field Programmable Gate Array), a PLC (Programmable Logic Controller), etc., and the specific setting form of the master controller is not limited too much in the application.

[0053] For other details of the battery piece correction system for implementing the above technical solutions, refer to the description of the correction wheel provided in the above application embodiments, which will not be repeated here.

[0054] The correction wheel and the battery piece correction system provided in the application have the bearing arranged between the wheel body and the supporting rod, which can release force through rotation when the battery piece collides with the wheel body, reduces the risk of the battery piece being broken into pieces, and can also reduce the friction between the wheel body and the supporting rod to avoid wear and damage between the wheel body and the supporting rod. The piezoelectric element and the energy storage element are arranged inside the accommodating cavity, the energy storage element is charged by the energy storage element when the wheel body is deformed, the transmission electrode connected with the energy storage element is arranged on the supporting rod, and the electric signal on the energy storage element can be output through the transmission electrode, so that the specific collision condition between the battery piece and the wheel body can be known according to the different electric signal sizes, and it is judged whether the battery piece will be cracked. The application can not only correct the deviation of the battery piece to avoid the battery piece being cracked, but also can judge whether the battery piece is cracked according to the actual electric signal size, avoid abnormal battery pieces mixed into normal qualified battery pieces, and improve the yield of the same batch of battery pieces.

[0055] It can be understood that the technical features of the above embodiments can be combined arbitrarily, and in order to make the description simple, all possible combinations of the technical features in the above embodiments are not described, however, as long as the combination of the technical features does not exist contradictory, it should be considered as the scope of the present application.

[0056] The above implementation is only an exemplary implementation adopted to illustrate the principle of the application, however, the application is not limited thereto. Various modifications and improvements can be made by those skilled in the art without departing from the spirit and essence of the application, and these modifications and improvements are also regarded as the protection scope of the application.

Claims

1. A corrective wheel, characterized in that, The wheel body is internally provided with a containing cavity, and a supporting rod is rotationally connected with the wheel body through a bearing; A piezoelectric element is arranged on the side wall of the containing cavity away from the supporting rod, and an energy storage element is arranged between the side wall of the containing cavity close to the supporting rod and the piezoelectric element, the piezoelectric element is used to charge the energy storage element when the wheel body is deformed; A transmission electrode is arranged on the supporting rod and connected with the energy storage element, the transmission electrode is used to transmit the electric signal of the energy storage element.

2. The corrective wheel of claim 1, wherein The energy storage element is a capacitor, which includes a first capacitor electrode plate arranged close to the piezoelectric element, and a second capacitor electrode plate arranged opposite to the first capacitor electrode plate and close to the supporting rod.

3. The corrective wheel of claim 2, wherein, The transmission electrode is a ring-shaped transmission electrode, which is electrically connected with the second capacitor plate.

4. The corrective wheel of claim 1, wherein The piezoelectric element is a piezoelectric sheet.

5. The corrective wheel of claim 1, wherein A buffer film is arranged on the outer side wall of the wheel body away from the supporting rod.

6. The corrective wheel of claim 1, wherein The wheel body is made of flexible material.

7. The corrective wheel of claim 1, wherein The number of the wheel bodies is two, two bearings are rotationally connected on the supporting rod, and the wheel bodies are arranged between the two bearings to be rotationally connected with the supporting rod through the bearings.

8. A cell rectifying system, characterized in that, The transmission belt is provided with a plurality of correction wheels as claimed in any one of claims 1-7 on both sides of the transmission belt. The side of the correction wheel provided with the piezoelectric element is arranged close to the transmission belt.

9. The cell rectifying system of claim 8, wherein, A sensor is arranged below the transmission belt to detect whether the battery piece is transmitted to a preset position.

10. The cell rectifying system of claim 8, wherein, A main controller connected with the transmission electrode is further provided, which is used to receive the electric signal transmitted by each transmission electrode.

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