Device for measuring pole piece

Abstract

The utility model discloses a device for measuring a pole piece, which belongs to the technical field of pole piece measurement and comprises a winding component and a measuring component, and the winding component is used for winding the pole piece; the measuring assembly comprises a first measuring sensor and a second measuring sensor, the first measuring sensor and the second measuring sensor are parallel to the pole piece, and the pole piece is located between the first measuring sensor and the second measuring sensor. The first measuring sensor is used for emitting a first laser beam to the front face of the pole piece, the first laser beam is perpendicular to the front face of the pole piece, the second measuring sensor is used for emitting a second laser beam to the back face of the pole piece, and the second laser beam is perpendicular to the back face of the pole piece. The first measuring sensor and the second measuring sensor are laser displacement sensors. According to the utility model, the technical effects of improving the measuring efficiency and precision of the pole piece and being beneficial to improving the production quality and efficiency of the lithium battery are achieved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of pole piece measurement, especially relates to a device for measuring pole piece. BACKGROUND

[0002] The total length of the pole piece is one of the important parameters affecting the performance and consistency of the battery in the production process of the lithium battery, and its accurate measurement is crucial. In the prior art, manual measurement or contact measurement is usually used. Manual measurement is not only inefficient, but also has large errors, and it is difficult to meet the high requirements for production efficiency and product consistency. Contact measurement is easy to damage the pole piece, and because it needs to be in direct contact with the surface of the pole piece, the measurement speed is limited, which cannot meet the needs of high-speed production lines and the efficiency of measurement is low.

[0003] Therefore, it is necessary to provide a new technical solution to solve the above technical problems. UTILITY MODEL CONTENT

[0004] The technical problem to be solved by the utility model is the low efficiency and poor accuracy of pole piece measurement, which is not conducive to improving the production quality and efficiency of lithium batteries.

[0005] To solve the above technical problems, the utility model provides a device for measuring pole piece, which comprises a winding assembly and a measuring assembly, the winding assembly is used for winding the pole piece, the measuring assembly comprises a first measuring sensor and a second measuring sensor, the first measuring sensor and the second measuring sensor are parallel to the pole piece respectively, the pole piece is located between the first measuring sensor and the second measuring sensor, the first measuring sensor is used for emitting a first laser beam to the front surface of the pole piece, and the first laser beam is perpendicular to the front surface of the pole piece, the second measuring sensor is used for emitting a second laser beam to the back surface of the pole piece, and the second laser beam is perpendicular to the back surface of the pole piece, and the first measuring sensor and the second measuring sensor are both laser displacement sensors.

[0006] Optionally, the number of the measuring assemblies is multiple, multiple measuring assemblies are arranged at intervals along the conveying direction of the pole piece, multiple first measuring sensors are linearly arranged along the conveying direction, and multiple second measuring sensors are linearly arranged along the conveying direction.

[0007] Optionally, the number of the measuring assemblies ranges from 2 to 4.

[0008] Optionally, the accuracy of the first measuring sensor is 0.05±0.02 microns.

[0009] Optionally, the measuring assembly further comprises a first supporting arm connected with the first measuring sensor and a second supporting arm connected with the second measuring sensor, and the first supporting arm and the second supporting arm are respectively connected with the machine table.

[0010] Optionally, the winding assembly comprises a winding driver and a winding shaft connected with the winding driver, and the winding driver drives the winding shaft to move the pole piece along the conveying direction of the pole piece.

[0011] Optionally, the device further comprises a collection and processing assembly connected with the first measuring sensor and the second measuring sensor respectively, the collection and processing assembly is used for receiving the displacement data collected by the first measuring sensor and the displacement data collected by the second measuring sensor respectively, and processing the displacement data collected by the first measuring sensor and the displacement data collected by the second measuring sensor to obtain the total length of the pole piece.

[0012] Optionally, the collection and processing assembly comprises a transmission module connected with the first measuring sensor and the second measuring sensor respectively and a processor connected with the transmission module, the processor receives the displacement data collected by the first measuring sensor and the displacement data collected by the second measuring sensor transmitted by the transmission module, and processes the displacement data collected by the first measuring sensor and the displacement data collected by the second measuring sensor to obtain the total length of the pole piece.

[0013] Optionally, the device further comprises a PC end connected with the collection and processing assembly, and the PC end is used for outputting and displaying the total length of the pole piece.

[0014] Optionally, the device further comprises a CCD detection assembly connected with the PC end, and a lens of the CCD detection assembly faces the back of the pole piece.

[0015] Beneficial effects:

[0016] The utility model provides a kind of device for measuring pole piece, pole piece is wound by winding assembly, first measurement sensor and second measurement sensor in measurement assembly are respectively mutually parallel with pole piece, pole piece is located between first measurement sensor and second measurement sensor, first measurement sensor is used to emit first laser beam to the front of pole piece, and first laser beam and the front of pole piece are mutually perpendicular, second measurement sensor is used to emit second laser beam to the back of pole piece, and second laser beam and the back of pole piece are mutually perpendicular, first measurement sensor and second measurement sensor are all laser displacement sensor.Pole piece moves by winding assembly work, first measurement sensor and second measurement sensor are provided on the path of pole piece transmission, first laser beam perpendicular to the front of pole piece is emitted by first measurement sensor, second laser beam perpendicular to the back of pole piece is emitted by second measurement sensor, first measurement sensor and second measurement sensor will respectively collect the displacement data of pole piece in the continuous winding process of winding assembly, then the displacement data of pole piece respectively collected by first measurement sensor and second measurement sensor are processed by integral algorithm to obtain the total length of pole piece, to improve the efficiency and precision of pole piece measurement, improve the production quality and efficiency of lithium battery. BRIEF DESCRIPTION OF DRAWINGS

[0017] 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. Obviously, the drawings described in the following are only some embodiments of the present application, and other drawings can also be obtained by those skilled in the art without creative labor.

[0018] Fig. 1 The structural diagram of the device for measuring pole piece provided by the embodiments of the present application.

[0019] Fig. 2 The structural block diagram of the acquisition and processing assembly in the device for measuring pole piece provided by the embodiments of the present application.

[0020] Fig. 3 The structural block diagram of the PC end and CCD detection assembly in the device for measuring pole piece provided by the embodiments of the present application. DETAILED DESCRIPTION

[0021] The embodiments of the present application will be described in detail below, and examples of the embodiments are shown in the drawings, wherein the same or similar reference signs represent the same or similar elements or elements with the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary, only for explaining the present application, and cannot be understood as limiting the present application.

[0022] In the following, the technical solutions in the embodiments of the present application will be described clearly and completely in conjunction with the accompanying drawings of the embodiments of the present application, so that those skilled in the art can better understand the solutions of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, but not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of protection of the present application.

[0023] In the embodiments of the present application, at least one means one or more, and multiple means two or more than two. In the description of the present application, the terms "first", "second", "third" and the like are only used for distinguishing the purposes of description, and cannot be understood as indicating or implying relative importance, nor indicating or implying sequence.

[0024] In the description of the present application, the terms "one embodiment" or "some embodiments" and the like mean that the specific features, structures or characteristics described in connection with the embodiment are included in one or more embodiments of the present application. Therefore, in the present application, the terms "include", "contain", "have" and their variants mean "include but not limited to", unless otherwise specifically emphasized. It should be noted that in the embodiments of the present application, the "and / or" description of the associated objects means that there can be three relationships, for example, A and / or B can represent the existence of A alone, the existence of A and B together, and the existence of B alone.

[0025] It should be noted that in the embodiments of the present application, when a component is referred to as "fixed to" another component, it can be directly on the other component or there can be a middle component. When a component is considered to be "connected" to another component, it can be directly connected to the other component or there can be a middle component. When a component is considered to be "set on" another component, it can be directly set on the other component or there can be a middle component. At the same time, in the embodiments of the present application, "connection" can also be understood as electrical connection, and the connection between two electrical elements can be direct or indirect connection between two electrical elements. For example, A and B are connected, which can be direct connection between A and B, or indirect connection between A and B through one or more other electrical elements. The terms "vertical", "horizontal", "left", "right" and similar expressions used in the embodiments of the present application are only for illustrative purposes, and are not intended to limit the present application.

[0026] The device for measuring pole piece provided by the embodiments of the present application, please refer to Figs. 1 to 3 The device for measuring pole piece provided by the embodiments of the present application, please refer to Fig. 1 The device for measuring pole piece provided by the embodiments of the present application, please refer to Fig. 2Is the structural block diagram of the acquisition and processing assembly 6 in the device for measuring pole piece provided by the embodiment of the utility model, Fig. 3 Is the structural block diagram of PC end 7 and CCD detection assembly 8 in the device for measuring pole piece provided by the embodiment of the utility model. The device for measuring pole piece provided by the embodiment of the utility model comprises a winding assembly 1 and a measuring assembly 2, the winding assembly 1 is used for winding pole piece 3, the measuring assembly 2 comprises first measuring sensor 21 and second measuring sensor 22, first measuring sensor 21 and second measuring sensor 22 are respectively parallel to pole piece 3, pole piece 3 is located between first measuring sensor 21 and second measuring sensor 22, first measuring sensor 21 is used for emitting first laser beam to the front surface 31 of pole piece 3, and the first laser beam is perpendicular to the front surface 31 of pole piece 3, second measuring sensor 22 is used for emitting second laser beam to the back surface 32 of pole piece 3, and the second laser beam is perpendicular to the back surface 32 of pole piece 3, first measuring sensor 21 and second measuring sensor 22 are all laser displacement sensors.

[0027] Among them, the winding assembly 1 provides a continuous and smooth moving platform for pole piece 3, the first laser beam emitted by the first measuring sensor 21 can accurately capture the slight displacement change of the front surface 31 of pole piece 3, and the second laser beam emitted by the second measuring sensor 22 correspondingly monitors the displacement of the back surface 32 of pole piece 3, and the first measuring sensor 21 and the second measuring sensor 22 improve the comprehensiveness and accuracy of measurement. The non-contact laser displacement sensor measurement can avoid the error and wear problem caused by the traditional mechanical contact measurement, and is beneficial to improve the measurement accuracy and stability. In the continuous working process of the winding assembly 1, the first measuring sensor 21 and the second measuring sensor 22 continuously collect the displacement data of pole piece 3, and the collected displacement data is then processed by integral algorithm, so that the total length of pole piece 3 can be quickly and accurately calculated.

[0028] In the embodiment, the pole piece 3 is wound by the winding assembly 1, the first measurement sensor 21 and the second measurement sensor 22 in the measurement assembly 2 are respectively parallel to the pole piece 3, the pole piece 3 is located between the first measurement sensor 21 and the second measurement sensor 22, the first measurement sensor 21 is used to emit a first laser beam to the front surface 31 of the pole piece 3, and the first laser beam is perpendicular to the front surface 31 of the pole piece 3, the second measurement sensor 22 is used to emit a second laser beam to the back surface 32 of the pole piece 3, and the second laser beam is perpendicular to the back surface 32 of the pole piece 3, and the first measurement sensor 21 and the second measurement sensor 22 are both laser displacement sensors. In this way, the winding assembly 1 works to drive the pole piece 3 to move, the first measurement sensor 21 and the second measurement sensor 22 are arranged on the transmission path of the pole piece 3, the first measurement sensor 21 emits a first laser beam perpendicular to the front surface 31 of the pole piece 3, the second measurement sensor 22 emits a second laser beam perpendicular to the back surface 32 of the pole piece 3, and the first measurement sensor 21 and the second measurement sensor 22 respectively collect displacement data of the pole piece 3 in the continuous winding process of the winding assembly 1, and then the total length of the pole piece 3 is obtained by processing the displacement data of the pole piece 3 collected by the first measurement sensor 21 and the second measurement sensor 22 through the integral algorithm. Thus, the efficiency and accuracy of the measurement of the pole piece 3 are improved, and the production quality and efficiency of the lithium battery are improved.

[0029] As an implementation manner, the number of the measurement assemblies 2 is multiple, the multiple measurement assemblies 2 are arranged at intervals along the conveying direction of the pole piece 3, and the multiple first measurement sensors 21 are linearly arranged along the conveying direction, and the multiple second measurement sensors 22 are linearly arranged along the conveying direction. The number of the measurement assemblies 2 is multiple, each measurement assembly 2 includes one first measurement sensor 21 and one second measurement sensor 22, and the multiple first measurement sensors 21 are linearly arranged along the conveying direction, and the multiple second measurement sensors 22 are also linearly arranged along the conveying direction, so that the displacement data of different positions of the pole piece 3 in the transmission process can be accurately collected. When the winding assembly 1 starts to work to drive the pole piece 3 to move along the conveying direction, the first measurement sensors 21 and the second measurement sensors 22 in the multiple measurement assemblies 2 respectively emit perpendicular laser beams to the front surface 31 and the back surface 32 of the pole piece 3. Since the number of the measurement assemblies 2 is large and linearly arranged, synchronous measurement of different positions of the pole piece 3 can be realized, the collected displacement data is accurately processed through the integral algorithm to obtain the total length of the pole piece 3, and the measurement efficiency is improved through the multi-point measurement, and the measurement accuracy is improved.

[0030] In some embodiments, the number of measurement assemblies 2 ranges from 2 to 4. When the winding assembly 1 moves the pole piece 3, the first measurement sensor 21 and the second measurement sensor 22 in the 2 to 4 measurement assemblies 2 respectively emit laser beams to the front face 31 and the back face 32 of the pole piece 3, and collect displacement data. Since the number of measurement assemblies 2 is moderate, the demand for high-precision measurement can be met, and the cost is not too high or the data processing is too complex, that is, the efficiency of measurement is maintained while the cost-effectiveness is maximized.

[0031] In some embodiments, the accuracy of the first measurement sensor 21 is 0.05±0.02 microns. When the winding assembly 1 is working, the high-precision first measurement sensor 21 can accurately capture the slight displacement change of the front face 31 of the pole piece 3 and transmit the data to the collection processing assembly 6 in real time, while the second measurement sensor 22 synchronously collects the displacement data of the back face 32 of the pole piece 3. Through the integral algorithm, the high-precision data is processed to accurately calculate the total length of the pole piece 3.

[0032] In some embodiments, the measurement assembly 2 of the device for measuring a pole piece further comprises a first support arm 4 and a second support arm 5, the first support arm 4 is connected with the first measurement sensor 21, the second support arm 5 is connected with the second measurement sensor 22, and the first support arm 4 and the second support arm 5 are respectively connected with a machine table to provide support for the first support arm 4 and the second support arm 5. During the movement of the pole piece 3 driven by the winding assembly 1, the first support arm 4 and the second support arm 5 provide stable support for the first measurement sensor 21 and the second measurement sensor 22, so that the sensors can always be kept in the correct position, ensuring that the laser beams can be vertically irradiated to the front face 31 and the back face 32 of the pole piece 3. Even under high-speed transmission or complex working conditions, high precision and stability can be maintained, providing reliable measurement guarantee for the production of lithium batteries.

[0033] In some embodiments, the winding assembly 1 of the device for measuring a pole piece comprises a winding driver and a winding shaft 11. Those skilled in the art can understand that the specific structure of the winding driver is not limited in the device for measuring a pole piece provided in the embodiments of the present application. Only when the winding shaft 11 is connected with the winding driver and the winding driver drives the winding shaft 11 to move the pole piece 3 along the conveying direction of the pole piece 3 can the winding driver be driven. When the winding driver is started, the winding driver drives the winding shaft 11 to rotate at a constant speed to stably move the pole piece 3 along the conveying direction. At this time, the first measurement sensor 21 and the second measurement sensor 22 in the measurement assembly 2 respectively emit laser beams to the front face 31 and the back face 32 of the pole piece 3, and collect displacement data. The winding assembly 1 can ensure the stability and consistency of the pole piece 3 during the transmission process, which helps to improve the accuracy and reliability of the measurement.

[0034] In some embodiments, the device for measuring the pole piece provided by the utility model also comprises a collection and processing assembly 6, which is connected with the first measuring sensor 21 and the second measuring sensor 22 respectively. The collection and processing assembly 6 is used for receiving the displacement data collected by the first measuring sensor 21 and the displacement data collected by the second measuring sensor 22 respectively, and processing the displacement data collected by the first measuring sensor 21 and the displacement data collected by the second measuring sensor 22 to obtain the total length of the pole piece 3. As the first measuring sensor 21 collects the moving distance of the pole piece 3, the second measuring sensor 22 also collects the moving distance of the pole piece 3 at the same time. According to the two moving distance data collected, that is, the displacement data of the pole piece 3, the integral algorithm is used to process the displacement data to reduce the measurement error, so that the accurate moving distance of the pole piece 3 can be obtained, and the moving distance of the pole piece 3 is the total length of the pole piece 3. When the winding assembly 1 starts to drive the pole piece 3 to move, the first measuring sensor 21 and the second measuring sensor 22 emit vertical laser beams to the front surface 31 and the back surface 32 of the pole piece 3 respectively, and collect the displacement data of the pole piece 3 in real time. The collection and processing assembly 6 receives the displacement data and processes the displacement data by using the built-in processing algorithm, such as the integral algorithm, to obtain the total length of the pole piece 3. The collection and processing assembly 6 can automatically and in real time process the data collected by the first measuring sensor 21 and the second measuring sensor 22, quickly obtain the total length of the pole piece 3, improve the measurement efficiency, enhance the measurement accuracy by reducing human intervention, better meet the high-precision and high-efficiency requirements for measuring the pole piece 3 in the production of lithium batteries, and help to improve the production quality and efficiency of lithium batteries.

[0035] In some embodiments, the collection and processing assembly 6 comprises a transmission module 61 and a processor 62. The transmission module 61 is connected with the first measuring sensor 21 and the second measuring sensor 22 respectively, and the processor 62 is connected with the transmission module 61. The processor 62 receives the displacement data collected by the first measuring sensor 21 and the displacement data collected by the second measuring sensor 22 through the transmission module 61, and processes the displacement data collected by the first measuring sensor 21 and the displacement data collected by the second measuring sensor 22 to obtain the total length of the pole piece 3. The transmission module 61 is connected with the first measuring sensor 21 and the second measuring sensor 22 by wire or wirelessly, and the processor 62 is connected with the transmission module 61. The data collected by the sensors is transmitted to the processor 62 through the transmission module 61, and the processor 62 processes the collected data to obtain the total length of the pole piece 3.

[0036] In some embodiments, the device for measuring the pole piece provided by the embodiment of the utility model further comprises a PC end 7, the PC end 7 is connected with the acquisition processing assembly 6, the PC end 7 is used for outputting and displaying the total length of the pole piece 3, and the PC end 7 can include a computer.The winding assembly 1 drives the pole piece 3 to move, the sensor acquires data, the acquisition processing assembly 6 processes data and obtains the total length of the pole piece 3, then the calculated total length data is transmitted to the PC end 7, and the display screen of the PC end 7 is used for presentation, and the operator can view the total length data of the pole piece 3 in real time, makes adjustment or decision in time, and the flexibility and controllability of lithium battery production are improved, and the production quality and efficiency are improved.

[0037] In some embodiments, the device for measuring the pole piece provided by the embodiment of the utility model further comprises a CCD detection assembly 8, the CCD detection assembly 8 is connected with the PC end 7, and the lens of the CCD detection assembly 8 faces the back surface 32 of the pole piece 3.The CCD detection assembly 8 can monitor the back surface 32 of the pole piece 3 in real time, and the monitoring result is transmitted to the PC end 7, the PC end 7 simultaneously displays the total length of the pole piece 3 and the monitoring result of the CCD detection assembly 8, so that the device can monitor the back surface 32 of the pole piece 3 in real time while measuring the total length of the pole piece 3, the problem that the pole piece 3 may appear in the transmission process can be found in time, the stability and reliability of lithium battery production are ensured, and combined with the display of the PC end 7, the operator can more comprehensively understand the condition of the pole piece 3, and the production quality and efficiency of the lithium battery are improved.

[0038] Finally, it should be explained that the above specific embodiments are only used to illustrate the technical scheme of the utility model and not to limit, although the utility model is described in detail with reference to examples, those skilled in the art should understand that the technical scheme of the utility model can be modified or replaced equivalently without departing from the spirit and scope of the technical scheme of the utility model, and all should be covered in the claim range of the utility model.

Claims

1. An apparatus for measuring pole pieces, characterized by, The device comprises a winding assembly for winding the pole piece and a measuring assembly. The measuring assembly comprises a first measuring sensor and a second measuring sensor, which are parallel to the pole piece and located between the first measuring sensor and the second measuring sensor. The first measuring sensor is used to emit a first laser beam to the front surface of the pole piece, and the first laser beam is perpendicular to the front surface of the pole piece. The second measuring sensor is used to emit a second laser beam to the back surface of the pole piece, and the second laser beam is perpendicular to the back surface of the pole piece. Both the first measuring sensor and the second measuring sensor are laser displacement sensors.

2. The device of claim 1, wherein, The number of the measuring assemblies is multiple, and the multiple measuring assemblies are arranged along the conveying direction of the pole piece. The multiple first measuring sensors are linearly arranged along the conveying direction, and the multiple second measuring sensors are linearly arranged along the conveying direction.

3. The device of claim 1, wherein, The number of the measuring assemblies ranges from 2 to 4.

4. The device of claim 1, wherein, The accuracy of the first measuring sensor is 0.05±0.02 microns.

5. The device of claim 1, wherein, The measuring assembly further comprises a first supporting arm connected with the first measuring sensor and a second supporting arm connected with the second measuring sensor. The first supporting arm and the second supporting arm are respectively connected with a machine table.

6. The device of claim 1, wherein, The winding assembly comprises a winding driver and a winding shaft connected with the winding driver. The winding driver drives the winding shaft to move the pole piece along the conveying direction of the pole piece.

7. The device of claim 1, wherein, The device further comprises a collection and processing assembly connected with the first measuring sensor and the second measuring sensor. The collection and processing assembly is used to receive the displacement data collected by the first measuring sensor and the displacement data collected by the second measuring sensor, and process the displacement data collected by the first measuring sensor and the displacement data collected by the second measuring sensor to obtain the total length of the pole piece.

8. The device of claim 7, wherein, The collection and processing assembly comprises a transmission module connected with the first measuring sensor and the second measuring sensor, and a processor connected with the transmission module. The processor receives the displacement data collected by the first measuring sensor and the displacement data collected by the second measuring sensor transmitted by the transmission module, and processes the displacement data collected by the first measuring sensor and the displacement data collected by the second measuring sensor to obtain the total length of the pole piece.

9. The device of claim 7, wherein, The device further comprises a PC terminal connected with the collection and processing assembly. The PC terminal is used to output and display the total length of the pole piece.

10. The device of claim 9, wherein, The device further comprises a CCD detection assembly connected with the PC terminal. The lens of the CCD detection assembly faces the back surface of the pole piece.

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