Battery thickness measuring device

Abstract

The utility model relates to the technical field of battery thickness measurement, in particular to a battery thickness measurement device which comprises a lower test board, an upper test board is arranged above the lower test board and is arranged on the lower test board in a sliding mode through a guide mechanism, and the guide mechanism used for controlling the magnitude of current is arranged on the lower test board. The upper test bench is provided with a movable connecting rod, the movable connecting rod is provided with a transmission rod, the transmission rod is provided with magnetic coils, the magnetic coils are electrically connected with the control mechanism through a first connecting line, and the middle position of the lower test bench is provided with a to-be-tested battery. According to the utility model, electric energy is converted into mechanical energy through the magnetic coil, pressure values are changed by using different current values at four points on the test table board, battery thickness tests with different pressure values are executed, the pressure values are stable due to the stable current values, and the pressure value of each time is monitored through the pressure sensor and uploaded in real time. Whether the thickness of the lithium battery is beneficial to improving the performance is analyzed according to data, and hands are prevented from being clamped through infrared detection.

Description

Technical Field

[0001] The utility model relates to the technical field of battery thickness measurement, and specifically relates to a battery thickness measurement device. Background Art

[0002] With the accelerating pace of modern industrial production automation, higher requirements are also put forward for the measurement of product thickness in industrial production. From the current development status and environment of domestic thickness measurement instruments, improving the intelligence, anti-interference performance and measurement accuracy of thickness measurement instruments will become the development direction of thickness measurement instruments. At present, the new energy in China is developing rapidly, and the reliability and safety performance of batteries need to be guaranteed; due to the climate and various harsh environmental factors in our life, the performance of batteries needs to be verified. The capacity test, charge and discharge cycle test, and storage test of batteries are important indicators in the battery R & D process, and the thickness of the battery is a key parameter in R & D design and test.

[0003] The thickness of lithium battery cells is one of the important factors affecting the performance of lithium batteries. An overly thick cell will cause problems such as reduced battery capacity and increased charging time. Therefore, accurately and quickly measuring the thickness of lithium batteries is a necessary requirement, which is of great significance for improving the performance of lithium batteries and promoting their important development.

[0004] The traditional methods for measuring battery thickness are calipers and panel pressure gap thickness gauges. When using calipers to measure thickness: it is impossible to ensure that the measurement is taken at the same position each time, and the pressure applied each time is different, so accurate measurement cannot be achieved. For the panel pressure gap thickness gauge: each time the pressure value is adjusted, the weight of the counterweight needs to be adjusted and the pressure value needs to be recalibrated. After long-term use, the pressure value needs to be calibrated regularly. After the battery is tested, various irregular bulging phenomena will occur, and conventional instruments need to be continuously adjusted to meet the requirements. No matter which thickness measurement device, it cannot meet the test requirements: convenient, efficient, accurate, and compatible.

[0005] Based on this, a battery thickness measurement device is now provided, which can eliminate the drawbacks of existing devices. Content of the Utility Model

[0006] Aiming at the above problems, a battery thickness measurement device is provided, which solves the problem that accurate measurement cannot be achieved due to different pressures applied by using magnetic coils.

[0007] To solve the problems of the prior art, the utility model provides a battery thickness measuring device, which includes a lower test bench. An upper test bench is arranged above the lower test bench. The upper test bench is slidably arranged on the lower test bench through a guiding mechanism. A guiding mechanism for controlling the magnitude of current is arranged on the lower test bench. An active connecting rod is arranged on the upper test bench. A transmission rod is arranged on the active connecting rod. A magnetic coil is arranged on the transmission rod. The magnetic coils are electrically connected to a control mechanism through a first connecting wire. A battery to be tested is arranged at the middle position of the lower test bench.

[0008] Preferably, a pressure sensor is arranged at the bottom of the active connecting rod.

[0009] Preferably, the guiding mechanism includes a sliding guide rail, a guiding rod and a sliding block. A sliding block is arranged on the side wall of the upper test bench. A sliding guide rail matched with the sliding block is arranged on the lower test bench. A plurality of guiding rods are arranged on the sliding guide rail. The sliding block is slidably matched with the guiding rod.

[0010] Preferably, a plurality of infrared detectors are arranged on the lower test bench.

[0011] Preferably, the control mechanism includes a sliding piece, a first terminal, a coil, a second terminal, a mounting plate, a metal rod and a porcelain cylinder. A plurality of mounting plates are arranged on the lower test bench. A porcelain cylinder is arranged between the mounting plates. A coil is arranged on the porcelain cylinder. A metal rod is arranged above the coil between the mounting plates. The sliding piece is slidably arranged on the metal rod and is matched with the coil. A second terminal and a first terminal are respectively arranged at both ends of the porcelain cylinder. The first terminal is electrically connected to a second connecting wire. The second terminal is electrically connected to a third connecting wire. The second connecting wire is electrically connected to the first connecting wire.

[0012] The beneficial effects of the utility model compared with the prior art are as follows:

[0013] 1. The utility model converts electric energy into mechanical energy through magnetic coils, changes the pressure values at four points on the test tabletop by using different current values, and performs battery thickness tests with different pressure values. Due to the stable current value, the pressure value is stable. Each thickness measurement test parameter is fast and accurate. The pressure sensor is used to monitor each pressure value and transmit and upload it in real time, avoiding the phenomenon that the pressure used each time is different and the accurate test cannot be performed when measuring at the same position. According to the data analysis, it can be determined whether the thickness of the lithium battery is beneficial to improving its performance.

[0014] 2. The utility model is provided with infrared detectors on the lower test bench. When the infrared detectors sense a human hand, they send signals to the controller, and the controller sends signals to the actuator to cut off the current, avoiding pinching the hand and ensuring the operation safety.

[0015] 3. The upper test bench and the lower test bench of the present utility model are made of insulating materials, which can avoid the risk of battery short - circuit during the test. Brief Description of the Drawings

[0016] Figure 1 is a three - dimensional structural schematic diagram of a battery thickness measuring device.

[0017] Figure 2 is an installation exploded structural schematic diagram of a battery thickness measuring device.

[0018] Figure 3 is a Figure 1 local enlarged three - dimensional structural schematic diagram of A in a battery thickness measuring device.

[0019] In the figure, the reference numerals are: 101, lower test bench; 102, upper test bench; 103, infrared detection; 104, movable connecting rod; 105, transmission rod; 106, magnetic coil; 107, pressure sensor; 108, first connecting wire; 109, second connecting wire; 110, battery to be measured; 111, third connecting wire; 200, guiding mechanism; 201, sliding guide rail; 202, guiding rod; 203, sliding block; 300, control mechanism; 301, sliding piece; 302, first terminal; 303, coil; 304, second terminal; 305, mounting plate; 306, metal rod; 307, porcelain cylinder. Detailed Embodiment

[0020] In order to further understand the features, technical means, specific purposes and functions achieved by the present utility model, the present utility model will be further described in detail below in conjunction with the drawings and specific embodiments.

[0021] Refer to Figures 1 - 3 : A battery thickness measuring device, including a lower test bench 101, an upper test bench 102 is provided above the lower test bench 101, the upper test bench 102 is slidably arranged on the lower test bench 101 through a guiding mechanism 200, a guiding mechanism 200 for controlling the magnitude of current is provided on the lower test bench 101, 5 movable connecting rods 104 are provided on the upper test bench 102, a transmission rod 105 is provided on the movable connecting rod 104, a magnetic coil 106 is provided on the transmission rod 105, the magnetic coils 106 are electrically connected to a control mechanism 300 through a first connecting wire 108, and a battery 110 to be measured is provided at the middle position on the lower test bench 101.

[0022] The guiding mechanism 200 is used to support the upper test bench 102 to slide on the lower test bench 101. The battery under test 110 is placed on the lower test bench 101. Electrical energy is converted into mechanical energy through the magnetic coil 106, which is based on the principle of electromagnetic induction. By controlling the mechanism 300 to control different current values, the magnetic field strength generated by the magnetic coil 106 can be changed, and then the pressure value of the upper test bench 102 on the battery under test 110 can be changed. This change in pressure value is precise and controllable, providing stable and reliable conditions for subsequent battery thickness testing. During the testing process, a stable current value is used for each test to ensure the stability of the pressure value. In this way, the pressure applied each time the battery thickness is measured is the same, thus avoiding test errors caused by different pressures. At the same time, by using the pressure sensor 107 to monitor and transmit the pressure value of each measurement in real time, the accuracy and real-time nature of the data can be ensured. Next, based on the measured battery thickness data, we can further analyze whether the lithium battery thickness is beneficial to improving its performance. When the next round of testing is required after the test is completed, the current is disconnected and the upper test bench 102 is toggled upward, and the next battery under test 110 to be tested is placed on the lower test bench 101.

[0023] Refer to Figures 1 - 2 A pressure sensor 107 is provided at the bottom of the movable connecting rod 104.

[0024] The pressure sensor 107 is used to monitor and transmit the pressure value of each measurement in real time, which can ensure the accuracy and real-time nature of the data.

[0025] Refer to Figures 1 - 2 The guiding mechanism 200 includes a sliding guide rail 201, a guiding rod 202 and a sliding block 203. A sliding block 203 is provided on the side wall of the upper test bench 102. A sliding guide rail 201 matching the sliding block 203 is provided on the lower test bench 101. A number of guiding rods 202 are provided on the sliding guide rail 201, and the sliding block 203 is slidably matched with the guiding rods 202.

[0026] The sliding guide rail 201 is used to support the guiding rod 202, and the guiding rod 202 is used to support the sliding of the sliding block 203, enabling the upper test bench 102 to slide on the lower test bench 101.

[0027] Refer to Figures 1 - 2 A number of infrared detectors 103 are provided on the lower test bench 101.

[0028] When the infrared detector 103 senses a human hand, it will send a signal to the controller, and the controller will send a signal to the actuator to cut off the current, avoiding pinching the hand and ensuring operation safety.

[0029] Refer to Figure 3: The control mechanism 300 includes a sliding piece 301, a first terminal 302, a coil 303, a second terminal 304, a mounting plate 305, a metal rod 306, and a porcelain cylinder 307. A number of mounting plates 305 are provided on the lower test bench 101. A porcelain cylinder 307 is provided between the mounting plates 305. A coil 303 is provided on the porcelain cylinder 307. A metal rod 306 is provided above the coil 303 between the mounting plates 305. The sliding piece 301 is slidably arranged on the metal rod 306 and cooperates with the coil 303. Second terminals 304 and first terminals 302 are respectively provided at both ends of the porcelain cylinder 307. The first terminal 302 is electrically connected to the second connecting wire 109. The second terminal 304 is electrically connected to the third connecting wire 111. The second connecting wire 109 is electrically connected to the first connecting wire 108.

[0030] Sliding the sliding piece 301 can adjust the magnitude of the control current. By controlling different current values, the magnetic field intensity generated by the magnetic coil 106 can be changed, and further the pressure value of the upper test bench 102 on the battery under test 110 can be changed. This change in the pressure value is accurate and controllable, providing stable and reliable conditions for subsequent battery thickness testing.

[0031] Working principle: Place the battery under test 110 on the lower test bench 101. Connect the third connecting wire 111 to the second terminal 304. By sliding the sliding piece 301, change the voltage distribution at both ends of the control mechanism. Since the total voltage of the control mechanism is equal to the power supply voltage, and the position of the sliding piece 301 determines the voltage distribution ratio between it and the load, the magnitude of the current can be adjusted. By controlling different current values, the magnetic field intensity generated by the magnetic coil 106 can be changed, and further the pressure value of the upper test bench 102 on the battery under test 110 can be changed, driving the upper test bench 102 to approach the lower test bench 110 and contact the battery under test 110. This change in the pressure value is accurate and controllable, avoiding test errors caused by different pressures. Then, the pressure sensor 107 can monitor and transmit the pressure value of each measurement in real time, ensuring the accuracy and timeliness of the data. Next, according to the measured battery thickness data, we can further analyze whether the lithium battery thickness is beneficial to improving its performance. When the next round of testing is required after the test is completed, disconnect the current and move the upper test bench 102 upward. Place the next battery under test 110 with a different thickness to be tested on the lower test bench 101. When the infrared detector 103 senses a human hand and sends a signal to the controller, the controller sends a signal to the actuator to cut off the current, avoiding pinching the hand and ensuring operation safety.

[0032] The above embodiments merely represent one or several implementation manners of the present utility model. The description thereof is relatively specific and detailed, but it should not be construed as a limitation to the scope of the present utility model. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present utility model, several modifications and improvements can still be made, and these all fall within the protection scope of the present utility model. Therefore, the protection scope of the present utility model shall be subject to the appended claims.

Claims

1. A battery thickness measuring device, characterized in that: The invention comprises a lower test bench (101), an upper test bench (102) is arranged above the lower test bench (101), the upper test bench (102) is slidably arranged on the lower test bench (101) via a guide mechanism (200), the lower test bench (101) is provided with a guide mechanism (200) for controlling the magnitude of a current, five movable connecting rods (104) are arranged on the upper test bench (102), a transmission rod (105) is arranged on the movable connecting rod (104), a magnetic coil (106) is arranged on the transmission rod (105), the magnetic coil (106) is electrically connected to a control mechanism (300) via a first connecting line (108), and a battery to be tested (110) is arranged in the middle position on the lower test bench (101).

2. A battery thickness measuring device according to claim 1, characterized in that: A pressure sensor (107) is provided at the bottom of the movable connecting rod (104).

3. A battery thickness measuring device according to claim 1, characterized in that: The guide mechanism (200) comprises a sliding guide rail (201), a guide rod (202) and a sliding block (203); the sliding block (203) is provided on the side wall of the upper test platform (102); the sliding guide rail (201) matched with the sliding block (203) is provided on the lower test platform (101); a plurality of guide rods (202) are provided on the sliding guide rail (201); and the sliding block (203) is slidably matched with the guide rods (202).

4. A battery thickness measuring device according to claim 1, characterized in that: The lower test platform (101) is provided with a plurality of infrared detectors (103).

5. A battery thickness measuring device according to claim 1, characterized in that: The control mechanism (300) comprises a sliding sheet (301), a first terminal (302), a coil (303), a second terminal (304), a mounting plate (305), a metal rod (306) and a porcelain cylinder (307). The lower test bench (101) is provided with a plurality of mounting plates (305), porcelain cylinders (307) are provided between the mounting plates (305), the coil (303) is provided on the porcelain cylinder (307), and the coil (303) between the mounting plates (305) is provided with a metal rod (306) and a porcelain cylinder (307). A metal rod (306) is provided on the side, the sliding sheet (301) is slidably arranged on the metal rod (306) and cooperates with the coil (303), and the second terminals (304) and the first terminals (302) are respectively provided at both ends of the porcelain tube (307), the first terminals (302) are electrically connected to the second connecting wire (109), the second terminals (304) are electrically connected to the third connecting wire (111), and the second connecting wire (109) is electrically connected to the first connecting wire (108).

Images