Square lithium battery size detection device

Abstract

The utility model discloses a square lithium battery size detection device, which comprises a base and a portal frame which are fixedly connected, one side of the base is fixedly connected with a baffle plate, one side of the base far away from the baffle plate is provided with a measuring mechanism, the base is rotatably connected with a tray, and the bottom of the base is provided with a grooved wheel mechanism for driving the tray to rotate. At least two electric push rods are fixedly connected to the portal frame, and pressing plates are fixedly connected to the ends of the electric push rods. The device has the advantages that the grooved wheel mechanism ensures that the tray can only rotate by 90 degrees on the base and is matched with the telescopic push plate and the baffle, so that the lithium battery can be firmly clamped between the tray and the baffle, and the two surfaces of the lithium battery can be tightly attached to and avoided from the push plate and the baffle, so as to ensure that the size data measured by the electronic measuring scale is accurate and errorless; the lithium battery is prevented from deviating in the measurement process, accurate measurement of length, width and height data of the lithium battery can be realized, and the lithium battery size measurement efficiency is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of lithium battery production auxiliary equipment, and particularly relates to a square lithium battery size detection device. Background Art

[0002] In the energy industry, batteries can be classified into three types according to different packaging processes: square, soft-pack, and cylindrical. Among them, square batteries are regarded as the "favorite" in the market because of their high packaging reliability, simple structure, high monomer energy density, and optimal comprehensive performance. After the finished lithium battery is produced, its size needs to be detected, mainly detecting information such as the length, width, and height of the lithium battery to make the size of the lithium battery meet the production requirements. However, in the production process of square lithium batteries, due to the influence of factors such as the environment and process control, the battery core is prone to absorb water again after baking, resulting in bulging of the lithium battery during the charge and discharge process. The bulging will cause the deformation of the shell of the lithium battery and the change of size, affecting the subsequent PACK assembly. At the same time, there is a certain pressure inside the bulging lithium battery, which will affect the electrochemical performance and safety of the battery. Currently, there are mainly two ways to detect the size of lithium batteries. One is to manually measure the size of the lithium battery, but the efficiency of manual detection is too low and the labor intensity of workers is large. The other is to use a special detection device to detect the size of the lithium battery.

[0003] The utility model patent with the existing publication number CN220170176U discloses a square lithium battery size measuring device, which relates to the technical field of lithium battery production. It includes a base and a bracket. The bracket is installed above the base. The upper surface of the base is rotatably connected with a turntable located inside the bracket. The upper end inside the bracket is provided with a support plate. Below the support plate, there is a U-shaped frame located directly above the turntable. Laser distance sensors are installed at the lower ends of the left and right sides inside the U-shaped frame. Two support bars distributed left and right are welded on the upper surface of the turntable. A plurality of electric suction cups installed on the turntable are arranged between the two support bars. The thickness of the lithium battery can be detected by two laser distance sensors. At the same time, during the detection, if the lithium battery bulges, then when the laser distance sensor corresponding to the bulging side measures the distance, the measured distance data will change greatly, so that the bulging situation of each surface can be detected intuitively and accurately.

[0004] However, when using the technical solution of the above-mentioned utility model to detect the size of the lithium battery, the lithium battery is mainly fixed by the electric suction cups between the support bars, and the size measurement of the lithium battery is completed by the laser distance sensor. Once the motor rotates a little more, the side of the lithium battery cannot be guaranteed to be perpendicular to the laser distance sensor, and the measured size data will be deviated, and the detection efficiency is low, affecting the size detection work of the finished lithium battery. Summary of the Utility Model

[0005] The purpose of the present utility model is to provide a device for detecting the size of a square lithium battery, so as to solve the problems in the prior art that the efficiency of manually detecting the size of a lithium battery is low, the labor intensity of workers is high, the fixing effect of the lithium battery size detection device on the lithium battery is not good, the accuracy of the measured size data is relatively low, and the height of the lithium battery cannot be detected at the same time.

[0006] To achieve the above object, the technical solution of the present utility model is: a device for detecting the size of a square lithium battery, including a base and a gantry fixedly connected, a baffle is fixedly connected to one side of the base, a measuring mechanism is arranged on the side of the base away from the baffle, a tray is rotatably connected to the base, a Geneva mechanism for driving the tray to rotate is arranged at the bottom of the base, at least two electric push rods are fixedly connected to the gantry, and a pressing plate is fixedly connected to the end of the electric push rod;

[0007] The measuring mechanism includes a fixed seat, a telescopic rod, a push plate, a spring and an electronic measuring ruler. The fixed seat is fixedly connected to the base. Three telescopic rods are fixedly connected to one side of the fixed seat. The end of the telescopic rod is fixedly connected to the push plate. A spring is sleeved on the middle telescopic rod. An electronic measuring ruler is fixedly connected to the other side of the fixed seat. One end of the electronic measuring ruler penetrates the fixed seat and is fixedly connected to the push plate.

[0008] Preferably, the Geneva mechanism includes a driving wheel, a rotating shaft, a motor, a driven Geneva wheel and a fixed shaft. The driving wheel is rotatably connected to the base through the rotating shaft. The driving wheel is fixedly connected to the rotating shaft. The other end of the rotating shaft is fixedly connected to the output end of the motor. A driven Geneva wheel is arranged on one side of the driving wheel and is matched with it. The driven Geneva wheel is rotatably connected to the base through the fixed shaft. The fixed shaft penetrates the base and is fixedly connected to the tray. A rotating arm is fixedly connected to the driving wheel. A cylindrical pin is fixedly connected to the rotating arm. Four radial grooves adapted to the cylindrical pin are arranged on the driven Geneva wheel.

[0009] Preferably, support legs are arranged at the four corners of the base.

[0010] Preferably, a handle rod is fixedly connected to the top of the push plate.

[0011] The advantages of the present utility model are as follows:

[0012] 1. The present utility model ensures that the tray can only rotate 90° on the base through the Geneva mechanism, and cooperates with the telescopic push plate and the baffle to firmly clamp the lithium battery between them, and ensures that the two surfaces of the lithium battery are closely attached to the push plate and the baffle, so as to ensure that the size data measured by the electronic measuring ruler is accurate and error-free, avoid the lithium battery from shifting during the measurement process, and can accurately measure the length, width and height data of the lithium battery, improving the efficiency of lithium battery size measurement;

[0013] 2. Before measurement, push the push plate to one side of the baffle until it fits tightly with the baffle, then zero the electronic measuring ruler. After the battery is clamped between the push plate and the baffle, the size data can be read through the electronic measuring ruler, further improving the accuracy of the size data of the lithium battery;

[0014] 3. The utility model has a simple structure, clamps the lithium battery by means of mechanical cooperation, is convenient to use, and the measured data is accurate, making the size of the lithium battery meet the requirements of the finished lithium battery. Description of the Drawings

[0015] Figure 1 It is a schematic structural diagram of the utility model.

[0016] Figure 2 It is a schematic side view structural diagram of the utility model.

[0017] Figure 3 It is a schematic structural diagram of the Geneva wheel mechanism of the utility model.

[0018] The meanings of the reference numerals are as follows: base 1, gantry 2, baffle 3, tray 4, electric push rod 5, pressing plate 6, fixed seat 7, telescopic rod 8, push plate 9, spring 10, electronic measuring ruler 11, driving wheel 12, rotating shaft 13, motor 14, driven Geneva wheel 15, fixed shaft 16, rotating arm 17, cylindrical pin 18, radial groove 19, support leg 20, handle rod 21. Detailed Embodiment

[0019] The utility model will be further described below in conjunction with the description of the drawings and the detailed embodiment.

[0020] As Figures 1 to 3 shown, a square lithium battery size detection device includes a fixedly connected base 1 and gantry 2. A baffle 3 is fixedly connected to one side of the base 1. A measuring mechanism is provided on the side of the base 1 away from the baffle 3. A tray 4 is rotatably connected to the base 1. A Geneva wheel mechanism for driving the tray to rotate is provided at the bottom of the base 1. At least two electric push rods 5 are fixedly connected to the gantry 2, and a pressing plate 6 is fixedly connected to the end of the electric push rod 5;

[0021] The measuring mechanism includes a fixed base 7, a telescopic rod 8, a push plate 9, a spring 10 and an electronic measuring ruler 11. The fixed base 7 is fixedly connected to the base 1. On one side of the fixed base 7, three telescopic rods 8 are fixedly connected. The end of the telescopic rod 8 is fixedly connected to a push plate 9. A spring 10 is sleeved on the middle telescopic rod 8. On the other side of the fixed base 7, an electronic measuring ruler 11 is fixedly connected. One end of the electronic measuring ruler 11 penetrates through the fixed base 7 and is fixedly connected to the push plate 9. Before measuring the size of the lithium battery, the push plate 9 needs to be pushed to one side of the baffle 3 so that the push plate 9 is in contact with the baffle 3. At the same time, press the zero button on the electronic measuring ruler 11. After zeroing, the measuring work can be carried out to ensure the accuracy of the measurement data.

[0022] To ensure the rotation of the tray 4 so that the tray 4 rotates only 90° each time, the Geneva mechanism includes a driving wheel 12, a rotating shaft 13, a motor 14, a driven Geneva wheel 15 and a fixed shaft 16. The driving wheel 12 is rotatably connected to the base 1 through the rotating shaft 13, and the driving wheel 12 is fixedly connected to the rotating shaft 13. The other end of the rotating shaft 13 is fixedly connected to the output end of the motor 14. On one side of the driving wheel 12, there is a driven Geneva wheel 15 that cooperates with it. The driven Geneva wheel 15 is rotatably connected to the base 1 through the fixed shaft 16. The fixed shaft 16 penetrates through the base 1 and is fixedly connected to the tray 4. A crank 17 is fixedly connected to the driving wheel 12, and a cylindrical pin 18 is fixedly connected to the crank 17. The driven Geneva wheel 15 is provided with 4 radial slots 19 that are adapted to the cylindrical pin 18. After the length of the lithium battery is measured, the motor 14 drives the rotating shaft 13 to rotate, the rotating shaft 13 drives the driving wheel 12 to rotate, and the cylindrical pin 18 on the crank 17 cooperates with the radial slot 19 on the driven Geneva wheel 15, so that the driven Geneva wheel 15 rotates 90°. At the same time, the tray 4 at the other end of the fixed shaft 16 also rotates 90°, and the lithium battery on the tray 4 also rotates 90° to facilitate the measurement of the height of the lithium battery.

[0023] To support the base 1 and reserve space for the Geneva mechanism at the same time, support legs 20 are provided at the four corners of the base 1.

[0024] To facilitate pulling the push plate 9, a handle rod 21 is fixedly connected to the top of the push plate 9.

[0025] The working process of the present utility model is as follows: First, before measuring the size of the lithium battery, by pushing the handle rod 21, the push plate 9 is pushed to one side of the baffle 3, so that the push plate 9 is in contact with the baffle 3, and the zero button on the electronic measuring ruler 11 is pressed to zero the electronic measuring ruler 11 for subsequent size measurement work; Second, by pulling the handle rod 21, the telescopic rod 8 and the spring 10 contract to make room for the lithium battery, then the lithium battery is placed flat on the tray 4 to measure the length of the lithium battery. Subsequently, the handle rod 21 is released, the spring 10 resets, and the push plate 9 moves towards the baffle 3. The push plate 9 and the baffle 3 cooperate to clamp the lithium battery between them, and the electric push rod 5 is started to clamp the lithium battery from 4 directions. Two of the surfaces are in contact with the baffle 3 and the push plate 9, and the other two surfaces are in contact with the tray 4 and the pressing plate 6. At the same time, the data on the electronic measuring ruler 11 is read and the length data is recorded, improving the accuracy of the lithium battery size measurement; Third, after the length measurement of the lithium battery is completed, the push plate 9 is pulled, the telescopic rod 8 and the spring 10 contract again, and the motor 14 is started. Driven by the motor 14, the motor 14 drives the rotating shaft 13 to rotate, the rotating shaft 13 drives the driving wheel 12 to rotate, and the cylindrical pin 18 on the rotating arm 17 cooperates with the radial groove 19 on the driven sprocket 15 to make the driven sprocket 15 rotate 90°. At the same time, the tray 4 at the other end of the fixed shaft 16 also rotates 90°, and the lithium battery on the tray 4 also rotates 90°. At this time, the handle rod 21 is released, the spring 10 resets, the push plate 9 moves towards the baffle 3, the push plate 9 and the baffle 3 cooperate to clamp the lithium battery between them, and the electric push rod 5 is started to clamp the lithium battery from 4 directions for measuring the height of the lithium battery. After the measurement is completed, the height data is read through the electronic measuring ruler 11 and recorded; Finally, after the length and height measurements are completed, the push plate 9 is pulled, the telescopic rod 8 and the spring 10 contract again, and the lithium battery is placed vertically on the tray 4 to measure the width of the lithium battery. After placing it, the handle rod 21 is released, the spring 10 resets, the push plate 9 moves towards the baffle 3, the push plate 9 and the baffle 3 cooperate to clamp the lithium battery between them, and the width of the lithium battery can be measured through the electronic measuring ruler 11, which can accurately measure the length, width and height data of the lithium battery and improve the efficiency of the lithium battery size measurement.

[0026] The above are only the preferred examples of the present utility model. The technical solutions of the present utility model are not limited by this. It should be pointed out that for those of ordinary skill in the art, under the technical inspiration provided by the present utility model, as the common general knowledge in the art, other equivalent deformations and improvements can also be made, which should also be regarded as the protection scope of the present utility model.

Claims

1. A square lithium battery size detection device, comprising a base (1) and a gantry (2) which are fixedly connected, characterized in that: A baffle (3) is fixedly connected to one side of the base (1); a measuring mechanism is provided on a side of the base (1) away from the baffle (3); a tray (4) is rotatably connected to the base (1); a grooved wheel mechanism for driving the tray to rotate is provided at the bottom of the base (1); at least two electric push rods (5) are fixedly connected to the gantry (2); and a pressure plate (6) is fixedly connected to the end of the electric push rod (5); The measuring mechanism comprises a fixed seat (7), a telescopic rod (8), a push plate (9), a spring (10) and an electronic measuring ruler (11); the fixed seat (7) is fixedly connected to the base (1); one side of the fixed seat (7) is fixedly connected to three telescopic rods (8); the ends of the telescopic rods (8) are fixedly connected to the push plate (9); the middle telescopic rod (8) is sleeved with a spring (10); the other side of the fixed seat (7) is fixedly connected to an electronic measuring ruler (11); one end of the electronic measuring ruler (11) passes through the fixed seat (7) and is fixedly connected to the push plate (9).

2. A square lithium battery size detection device as claimed in claim 1, characterized in that: The grooved wheel mechanism comprises a driving wheel (12), a rotating shaft (13), a motor (14), a driven grooved wheel (15) and a fixed shaft (16); the driving wheel (12) is rotatably connected to the base (1) via the rotating shaft (13); the driving wheel (12) is fixedly connected to the rotating shaft (13); the other end of the rotating shaft (13) is fixedly connected to the output end of the motor (14); one side of the driving wheel (12) is provided with a driven grooved wheel (15) matched therewith; the driven grooved wheel (15) is rotatably connected to the base (1) via the fixed shaft (16); the fixed shaft (16) penetrates the base (1) and is fixedly connected to the tray (4); a rotating arm (17) is fixedly connected to the driving wheel (12); a cylindrical pin (18) is fixedly connected to the rotating arm (17); and four radial grooves (19) matched with the cylindrical pin (18) are provided on the driven grooved wheel (15).

3. A square lithium battery size detection device as claimed in claim 2, characterized in that: Support legs (20) are provided at the four corners of the base (1).

4. A square lithium battery size detection device as claimed in claim 3, characterized in that: A handle bar (21) is fixedly connected to the top of the push plate (9).

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