Battery cell measuring device

Abstract

The utility model discloses a kind of battery measuring device, including test table, vertical moving mechanism, pressure sensor, measuring pen and manipulator, vertical moving mechanism is provided on test table, the output end of vertical moving mechanism is connected pressure sensor and measuring pen respectively, one end of manipulator is fixed on test table, the other end is used to grab battery.The utility model is characterized in that, through pressure sensor, measuring pen is concentrated on vertical moving mechanism, only need to drive vertical moving mechanism to complete battery, thickness, voltage, AC resistance measurement, and the measuring device replaces artificial test, not only improve measurement efficiency, also improve measurement accuracy.

Description

Technical Field

[0001] This utility model relates to the field of battery cell technology, specifically to a battery cell measuring device. Background Technology

[0002] In the energy storage field, with the widespread application of renewable energy sources such as solar and wind power, the demand for large-scale, high-efficiency energy storage solutions has surged. Battery technology continues to advance, and in the research and development of new battery technologies such as solid-state sodium-ion batteries, which aim to improve energy density, extend cycle life, reduce costs, and enhance performance, pouch cells have become a commonly used experimental material in new material development due to their advantages such as low cost, low risk, and ease of prototyping. During the testing of pouch cells, it is necessary to periodically measure their voltage, AC internal resistance, and thickness. Currently, voltage and AC internal resistance are measured using a voltage and internal resistance tester, and the thickness is then measured using vernier calipers. However, when using handheld vernier calipers, the inconsistent pushing force applied by different personnel and the inability to fix the measurement position lead to significant errors in thickness measurement. Furthermore, the high frequency of voltage, AC internal resistance, and thickness tests for pouch cells results in a lengthy testing process. Utility Model Content

[0003] The technical problem to be solved by this utility model is how to improve testing efficiency and measurement accuracy.

[0004] To solve the above-mentioned technical problems, this utility model provides the following technical solution:

[0005] A battery cell measuring device includes a test platform, a vertical moving mechanism, a pressure sensor, a measuring pen, and a robotic arm. The test platform is equipped with a vertical moving mechanism, the output end of which is connected to the pressure sensor and the measuring pen, respectively. One end of the robotic arm is fixed to the test platform, and the other end is used to grasp the battery cell.

[0006] By concentrating pressure sensors and measuring pens on a vertical moving mechanism, the thickness, voltage, and AC internal resistance of the battery cell can be measured simply by driving the vertical moving mechanism. This measuring device replaces manual testing, which not only improves measurement efficiency but also measurement accuracy.

[0007] Preferably, the test bench includes a base, a test surface, and a support frame. The test bench and the support frame are mounted on the base. The test bench is used to place the battery cell. The output end of the vertical moving mechanism fixed on the support frame is set towards the test bench. One end of the robot arm is fixed on the base.

[0008] Preferably, a positioning block is provided on the test platform.

[0009] By setting up positioning blocks, the battery cells are positioned, reducing measurement errors caused by changes in the measurement position.

[0010] Preferably, a support block is provided on the test platform.

[0011] The positive and negative terminals on the battery cell are supported by the support block to prevent the measuring probe from causing pressure and deformation to the positive and negative terminals on the battery cell.

[0012] Preferably, the output end of the vertical moving mechanism is connected to a pressure sensor via a first bracket.

[0013] Preferably, the output end of the vertical moving mechanism is connected to the measuring pen via a second bracket.

[0014] Preferably, the measuring pen is provided in two sets, and the measuring pen needle is elastically set; so that the measuring pen can continue to press down after contacting the positive and negative terminals on the battery cell, ensuring that the pressure sensor and the pressure value on the battery cell can reach the set value.

[0015] Preferably, the robotic arm is provided in two sets, each consisting of a robotic arm and a suction cup. One end of the robotic arm is fixed to the test platform, and the other end is connected to the suction cup.

[0016] Preferably, a barcode scanner is also provided on the testing platform.

[0017] Preferably, the test bench is also equipped with monitoring equipment.

[0018] This utility model also provides a sealing installation device for installing the above-mentioned battery cell measuring device. The sealing installation device includes a gripper, an air tube, and an air needle. The gripper is used to grip the battery cell measuring device. The air tube is connected to the air needle. The air needle is used to connect to the nail body and is connected to the air inlet.

[0019] Compared with the prior art, the beneficial effects of this utility model are:

[0020] 1. By concentrating the pressure sensor and measuring pen on the vertical moving mechanism, the thickness, voltage, and AC internal resistance of the battery cell can be measured simply by driving the vertical moving mechanism. This measuring device replaces manual testing, which not only improves measurement efficiency but also improves measurement accuracy.

[0021] 2. By setting up positioning blocks, the battery cells are positioned, reducing measurement errors caused by changes in the measurement position.

[0022] 3. Support blocks are used to support the positive and negative terminals on the battery cell to prevent the measuring probe from causing pressure and deformation to the positive and negative terminals on the battery cell.

[0023] 4. Set the measuring pen needle to be elastic so that the measuring pen can continue to press down after contacting the positive and negative terminals on the battery cell, ensuring that the pressure sensor and the pressure value on the battery cell can reach the set value. Attached Figure Description

[0024] Figure 1This is a schematic diagram of the structure of the battery cell measuring device according to an embodiment of the present invention;

[0025] Figure 2 This is a partial structural schematic diagram of the battery cell measuring device according to an embodiment of the present invention.

[0026] In the diagram: 1. Test bench; 101. Base; 102. Test bench surface; 103. Support frame; 2. Vertical moving mechanism; 3. Pressure sensor; 4. Measuring pen; 5. Robotic arm; 6. Barcode scanner; 7. Monitoring equipment; 8. Controller; 9. Battery cell; 10. Positioning block; 11. Support block; 12. Connecting plate; 13. First bracket; 14. Second bracket. Detailed Implementation

[0027] To facilitate understanding of the technical solution of this utility model by those skilled in the art, the technical solution of this utility model will now be further described in conjunction with the accompanying drawings.

[0028] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a communication connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0029] In this application, unless otherwise expressly specified and limited, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" means two or more, unless otherwise expressly and specifically limited.

[0030] See Figure 1 and Figure 2 This embodiment discloses a battery cell measuring device, including a test platform 1, a vertical moving mechanism 2, a pressure sensor 3, a measuring pen 4, a robotic arm 5, a barcode scanner 6, a monitoring device 7, and a controller 8.

[0031] The test bench 1 includes a base 101, a test surface 102, and a support frame 103. The test bench 102 and the support frame 103 are set on the base 101. The test bench 102 is used to place the battery cell 9. Specifically, three positioning blocks 10 and two support blocks 11 are set on the surface of the test bench 102. The three positioning blocks 10 respectively position the three sides of the battery cell 9 to reduce the measurement error caused by the change of measurement position. The two support blocks 11 respectively support the positive and negative terminals on the battery cell 9 to prevent the measuring pen 4 from causing pressure deformation on the positive and negative terminals on the battery cell 9.

[0032] The output end of the vertical moving mechanism 2, which is fixed on the support frame 103, is set towards the test bench 102. In this embodiment, the support frame 103 is set in a rectangular frame structure, and the vertical moving mechanism 2 adopts a servo electric cylinder.

[0033] The output end of the vertical moving mechanism 2 is connected to the first bracket 13 and the second bracket 14 through the connecting plate 12. The pressure sensor 3 is fixed on the first bracket 13, and the two sets of measuring pens 4 are fixed on the second bracket 14. The measuring pens 4 have elastically set measuring needles. Specifically, driving the vertical moving mechanism 2 causes its output end to move down, which in turn causes the connecting plate 12 to move down. This causes the pressure sensor 3 and the two sets of measuring pens 4 to move down towards the battery cell 9 through the first bracket 13 and the second bracket 14. The pressure sensor 3 contacts the upper surface of the battery cell 9 and gradually increases the pressure. When the pressure value collected by the pressure sensor 3 reaches the set value, the vertical moving mechanism 2 stops working and simultaneously measures / controls the pressure value and displacement. At the same time, the two sets of measuring pens 4 effectively contact the positive and negative terminals on the battery cell 9 to measure the voltage and AC internal resistance data of the battery cell. It should be noted that, in order to ensure that the pressure sensor 3 can reach the set value when the pressure value on the battery cell 9 is reached, the measuring pen needle of the measuring pen 4 is set to be elastic, so that the measuring pen 4 can continue to press down after contacting the positive and negative terminals on the battery cell 9 until the pressure sensor 3 and the pressure value on the battery cell 9 reach the set value.

[0034] One end of the robotic arm 5 is fixed on the base 101, and the other end is used to grasp the battery cell 9. In this embodiment, there are two sets of robotic arms 5, which are respectively set on the base 101 on both sides of the support frame 103. One set of robotic arms 5 is used to place the battery cell 9 to be tested on the test table 102, and the other set of robotic arms 5 is used to remove the battery cell 9 after the test is completed on the test table 102.

[0035] Specifically, the robotic arm 5 includes a robotic arm 501 and a suction cup 502. One end of the robotic arm 501 is fixed on the base 101, and the other end is connected to the suction cup 502 for adsorbing the battery cell 9.

[0036] Both the barcode scanner 6 and the monitoring device 7 are fixed on the support frame 103. In this embodiment, the monitoring device 7 is a camera. The controller 8 is fixed on the base 101. The vertical moving mechanism 2, pressure sensor 3, measuring pen 4, robotic arm 5, barcode scanner 6, and monitoring device 7 are all electrically connected to the controller. Specifically, a QR code or barcode is affixed to the battery cell 9 to be tested. The QR code or barcode records the number and parameter information of the battery cell 9 to be tested. The barcode scanner 6 identifies the information of the battery cell 9 to be tested and sends the information to the controller 8. Similarly, after the monitoring device 7 captures the externally transported battery cell 9, it sends its information to the controller 8. The controller 8 then controls the robotic arm 5 to pick up the battery cell 9 and place it on the test platform 102. Then, it controls the vertical moving mechanism 2 to drive the pressure sensor 3 and measuring pen 4 to move down and measure the thickness, voltage, and AC internal resistance of the battery cell 9, and sends the measurement data to the controller 8.

[0037] Specifically, the measurement process of the battery cell measuring device is as follows: After the monitoring device 7 captures the externally transported battery cell 9, it sends its information to the controller 8. The controller 8 then controls the robotic arm 5 to pick up the battery cell 9 and place it between the three positioning blocks 10 on the test platform 102. The positive and negative terminals on the battery cell 9 are placed on the support block 11. The barcode scanner 6 identifies the information of the battery cell 9 to be tested and sends the information to the controller 8. The controller 8 then controls the vertical moving mechanism 2 to drive the pressure sensor 3 and the measuring pen 4 to move down to measure the thickness, voltage, and AC internal resistance of the battery cell 9 and sends the measurement data to the controller 8 to complete the measurement of the battery cell 9. Then, another set of robotic arms 5 is controlled to pick up the measured battery cell 9 and transfer it to the measurement area. At the same time, another set of robotic arms 5 places the picked-up battery cell 9 on the test platform 102 for measurement. The above operation is repeated until all battery cells 9 have been measured.

[0038] In summary, in this embodiment, the pressure sensor 3 and the measuring pen 4 are concentrated on the vertical moving mechanism 2. The thickness, voltage, and AC internal resistance of the battery cell 9 can be measured simply by driving the vertical moving mechanism 2. Furthermore, this measuring device replaces manual testing, which not only improves the measurement efficiency but also the measurement accuracy.

[0039] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within this invention, and no reference numerals in the claims should be construed as limiting the scope of the claims.

[0040] The above-described embodiments are merely examples of implementation methods of the utility model. The scope of protection of this utility model is not limited to the above-described embodiments. For those skilled in the art, several modifications and improvements can be made without departing from the concept of this utility model, and these all fall within the scope of protection of this utility model.

Claims

1. A battery cell measuring device, characterized in that: It includes a test platform, a vertical moving mechanism, a pressure sensor, a measuring pen, and a robotic arm. The test platform is equipped with a vertical moving mechanism, the output of which is connected to the pressure sensor and the measuring pen respectively. One end of the robotic arm is fixed to the test platform, and the other end is used to grasp the battery cell.

2. The cell measuring device according to claim 1, characterized in that: The test bench includes a base, a test platform, and a support frame. The test platform and the support frame are mounted on the base. The test platform is used to place the battery cells. The output end of the vertical moving mechanism, which is fixed on the support frame, is set towards the test platform. One end of the robot arm is fixed on the base.

3. The cell measuring device according to claim 2, characterized in that: Positioning blocks are installed on the test platform.

4. The cell measuring device according to claim 2, characterized in that: Support blocks are installed on the test platform.

5. The battery cell measuring device according to claim 1, characterized in that: The output end of the vertical moving mechanism is connected to a pressure sensor via the first bracket.

6. The cell measuring device according to claim 1, characterized in that: The output end of the vertical moving mechanism is connected to the measuring pen via a second bracket.

7. The battery cell measuring device according to claim 1, characterized in that: The measuring pen has two sets, and the measuring pen needle is elastically set.

8. The battery cell measuring device according to claim 1, characterized in that: The robotic arm is set up in two sets, which includes a robotic arm and a suction cup. One end of the robotic arm is fixed to the test table, and the other end is connected to the suction cup.

9. A cell measuring device according to claim 1, characterized in that: The testing platform is also equipped with a barcode scanner.

10. A cell measuring device according to claim 1, characterized in that: The testing platform is also equipped with monitoring equipment.

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