Automatic stamping withstand voltage testing device for power battery side plate

Abstract

The utility model belongs to the technical field of power battery side plate detection, and particularly relates to a power battery side plate automatic stamping withstand voltage testing device which comprises a frame body, a conveying assembly, two clamping assemblies and a collecting assembly are arranged on the frame body, a detection assembly is arranged at the end of the conveying assembly, and the clamping assemblies are arranged in the conveying assembly. The two groups of clamping assemblies are symmetrically distributed relative to the transmission assembly, and the two groups of clamping assemblies are not only used for limiting to-be-detected power battery side plates, but also used for separately transferring qualified products or defective products of the power battery side plates. The device can realize automatic detection and is high in detection efficiency.

Description

Technical Field

[0001] This utility model belongs to the field of power battery side plate testing technology, specifically relating to an automatic stamping and pressure testing device for power battery side plates. Background Technology

[0002] During the use of power batteries, especially lithium batteries, overcharging and discharging, use in extreme environments, long-term storage of fully charged or overcharged cells, and quality problems of the lithium battery itself can all lead to bulging. When overcharged, lithium atoms in the positive electrode material may migrate to the negative electrode material, causing deformation of the positive electrode structure. At the same time, excessive accumulation of lithium ions in the negative electrode forms dendritic crystals, causing the battery to expand. Over-discharge can damage the solid electrolyte interphase (SEI) film of the negative electrode material, causing the negative electrode material structure to collapse and resulting in battery bulging. Therefore, in the lithium battery production process, a high-voltage-resistant power battery side plate is set up, which is placed between two cells or the side plate encompasses the entire lithium battery cell. However, a very important quality parameter of the power battery side plate is the voltage withstand coefficient. Therefore, an automatic stamping and voltage withstand testing device for power battery side plates is needed. In actual use, the existing testing device requires manual placement of the power battery side plate on the testing device each time. After the test is completed, the power battery side plate is placed in the corresponding storage box according to the test results. Since the testing efficiency is semi-automatic, manual operation is still required, resulting in low testing efficiency. To address this, we propose an automatic stamping and voltage withstand testing device for power battery side plates. Summary of the Invention

[0003] The purpose of this invention is to provide an automatic stamping and pressure testing device for the side plate of a power battery. The terminal controller performs intelligent testing by controlling the detection component, and then controls the clamping component to classify qualified or defective products according to the test results. The air pump provides power to the clamping component and the detection component. This invention completes automatic control testing, eliminating the need for manual labor, saving human resources, and greatly improving testing efficiency.

[0004] The specific technical solution adopted by this utility model is as follows:

[0005] An automatic stamping and pressure testing device for power battery side panels includes a frame, on which a transmission component, a clamping component, and a collecting component are provided. A detection component is provided at the end of the transmission component. There are two sets of clamping components, which are symmetrically distributed about the transmission component. The two sets of clamping components are used not only to limit the power battery side panels to be tested, but also to separate and transfer qualified or defective power battery side panels.

[0006] Preferably, the transmission assembly includes a mounting rod disposed on the frame, a sliding plate disposed on the mounting rod, one end of the sliding plate being inclined and the other end being horizontal, and a baffle being disposed on the side of the sliding plate.

[0007] Preferably, the detection assembly includes a detection plate disposed at the horizontal end of the sliding plate and a mounting plate disposed on the frame. The detection plate has a plurality of mounting through holes, which are distributed in an array at equal intervals. The mounting plate is provided with a plurality of first pressure sensors distributed in an array at equal intervals. The plurality of first pressure sensors are located in the mounting through holes, and the upper surfaces of the plurality of first pressure sensors are aligned with the upper surface of the detection plate.

[0008] Preferably, the baffle end is provided with a crossbar, the crossbar is provided with a first pneumatic telescopic rod in the middle, the lower output end of the first pneumatic telescopic rod is provided with a pressure plate, the pressure plate is provided with springs distributed in an equally spaced array, the lower end of the spring is provided with a second pressure sensor, and each second pressure sensor is located directly above each corresponding first pressure sensor.

[0009] Preferably, the end edges of the first pressure sensor housing, the end edges of the second pressure sensor housing, and the corners of the mounting through hole are rounded, and the end of the detection plate is provided with a stop strip.

[0010] Preferably, the clamping assembly includes a fixed plate symmetrically arranged under the mounting plate, a second pneumatic telescopic rod connected to one end of the fixed plate via a hinge shaft, a drive rod connected to the other end of the fixed plate via a hinge shaft, and the end of the second pneumatic telescopic rod connected to the middle of the drive rod via a hinge shaft.

[0011] Preferably, the drive rod is bent at 90°, the end of the drive rod is provided with a horizontal bar, the middle of the horizontal bar is connected with a clamping bar, the two ends of the horizontal bar are connected with suction cups, the edge of the fixing plate is provided with two protrusions, and the sidewalls of the two protrusions are respectively adapted to the sidewalls of the second pneumatic telescopic rod.

[0012] Preferably, the collection assembly includes a finished product box and a defective product box installed on the frame, the finished product box and the defective product box being located below the two fixed plates respectively.

[0013] The technical effects achieved by this utility model are as follows:

[0014] In this invention, the terminal controller performs intelligent detection by controlling the detection component, and then controls the clamping component to classify qualified or defective products according to the detection results. The air pump provides power to the clamping component and the detection component. This invention completes automatic control detection, eliminating the need for manual labor, saving human resources, and greatly improving detection efficiency.

[0015] In this invention, when the power battery side plate slides onto the testing plate and its end aligns with the stop bar, the output end of the second pneumatic telescopic rod extends outward, causing the drive rod to rotate around its root hinge axis. The drive rod then rotates the crossbar and clamping bar, allowing the clamping bar to just release the power battery side plate, thus fixing it in place. Simultaneously, the suction cup adheres to the upper surface of the power battery side plate and, under the action of the air pump, draws air to adsorb the power battery side plate, further securing it. After testing, for qualified power battery side plates, under the control of the intelligent terminal, the suction cup near the defective product box inflates and stops adsorption, while the suction cup near the finished product box continues adsorption. Then, the second pneumatic telescopic rod... The output end of the lever retracts inward, causing the drive lever to rotate 190° in the opposite direction around its root hinge axis. Then, the suction cup is inflated and stops adsorption, and qualified products slide into the finished product box. Similarly, for the unqualified power battery side panels, under the control of the intelligent terminal, the suction cup near the finished product box is inflated and stops adsorption, while the suction cup near the defective product box continues adsorption. Then, the output end of the second pneumatic telescopic lever retracts inward, causing the drive lever to rotate 190° in the opposite direction around its root hinge axis. Then, the suction cup is inflated and stops adsorption, and unqualified products slide into the defective product box. In summary, by setting up the clamping assembly, the clamping assembly can not only limit the power battery side panels to be tested, but also distinguish between qualified finished products and unqualified defective products. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of an automatic stamping and pressure testing device for the side plate of a power battery according to this utility model.

[0017] Figure 2 This is a utility model Figure 1 Enlarged view of point A in the middle;

[0018] Figure 3 This is a top view schematic diagram of an automatic stamping and pressure testing device for the side plate of a power battery according to this utility model.

[0019] Figure 4 This is a utility model Figure 3 Sectional view at point BB;

[0020] Figure 5 This is a utility model Figure 4 Enlarged view of point C in the middle;

[0021] Figure 6 This is a schematic diagram of the overall structure of an automatic stamping and pressure testing device for the side plate of a power battery according to this utility model from another perspective;

[0022] Figure 7 This is a utility model Figure 6 Enlarged view of point D in the middle.

[0023] The attached diagram lists the components represented by each number as follows:

[0024] 1. Frame; 2. Transmission assembly; 3. Clamping assembly; 4. Collection assembly; 5. Detection assembly; 201. Mounting rod; 202. Sliding plate; 203. Baffle; 301. Fixing plate; 302. Second pneumatic telescopic rod; 303. Drive rod; 304. Crossbar; 305. Suction cup; 306. Protrusion; 307. Clamping bar; 401. Finished product box; 402. Defective product box; 501. Detection plate; 502. Mounting plate; 503. First pressure sensor; 504. Crossbar; 505. First pneumatic telescopic rod; 506. Pressure plate; 507. Spring; 508. Second pressure sensor; 509. Baffle. Detailed Implementation

[0025] To make the objectives and advantages of this utility model clearer, the following detailed description is provided in conjunction with embodiments. It should be understood that the following text is merely used to describe one or more specific embodiments of this utility model and does not strictly limit the scope of protection specifically claimed by this utility model.

[0026] like Figure 1 as well as Figure 6 As shown, an automatic stamping and pressure testing device for power battery side panels includes a frame 1. The frame 1 is equipped with a transmission component 2, a clamping component 3, and a collection component 4. The end of the transmission component 2 is equipped with a detection component 5. There are two sets of clamping components 3, which are symmetrically distributed about the transmission component 2. The two sets of clamping components 3 are not only used to limit the power battery side panels to be tested, but also to separate and transfer qualified or defective power battery side panels.

[0027] In practical use, this utility model also includes a terminal controller and an air pump. The terminal controller performs intelligent detection by controlling the detection component 5, and then controls the clamping component 3 to classify qualified or defective products according to the detection results. The air pump provides power to the clamping component 3 and the detection component 5. This utility model completes automatic control detection, eliminating the need for manual labor, saving human resources, and greatly improving detection efficiency.

[0028] like Figure 4 As shown, the transmission component 2 includes a mounting rod 201 mounted on the frame 1. A sliding plate 202 is provided on the mounting rod 201. One end of the sliding plate 202 is inclined and the other end is horizontal. A baffle 203 is provided on the side of the sliding plate 202.

[0029] In this invention, the inclined end and the horizontal end of the sliding plate 202 are smoothly transitioned. By setting baffles 203, the power battery side plate slides laterally between the two baffles 203, and can automatically slide from the inclined end of the sliding plate 202 to the horizontal end of the sliding plate 202. This invention can automatically transport the power battery side plate to be tested, saving manpower and greatly improving testing efficiency.

[0030] like Figure 2 as well as Figure 5 As shown, the detection component 5 includes a detection plate 501 disposed at the horizontal end of the sliding plate 202 and a mounting plate 502 disposed on the frame 1. The detection plate 501 has a plurality of mounting through holes, which are distributed in an equally spaced array. The mounting plate 502 is provided with a plurality of first pressure sensors 503 distributed in an equally spaced array. The plurality of first pressure sensors 503 are located in the mounting through holes, and the upper surfaces of the plurality of first pressure sensors 503 are aligned with the upper surface of the detection plate 501. The end of the baffle 203 is provided with a crossbar 504. The middle of the crossbar 504 is provided with a first pneumatic telescopic rod 505. The lower output end of the first pneumatic telescopic rod 505 is provided with a pressure plate 506. The pressure plate 506 is provided with springs 507 distributed in an equally spaced array. The lower end of the springs 507 is provided with a second pressure sensor 508. Each second pressure sensor 508 is located directly above each corresponding first pressure sensor 503.

[0031] like Figure 2 as well as Figure 5 As shown in this utility model, during the testing process, the power battery side plate slides onto the testing plate 501. Since the upper surface of the first pressure sensor 503 is aligned with the upper surface of the testing plate 501, the first pressure sensor 503 will not generate a reading at this time. Under the control of the intelligent terminal, the lower output end of the first pneumatic telescopic rod 505 drives the pressure plate 506 to slide downward. The pressure plate 506 drives the spring 507 and the second pressure sensor 508 to slide vertically downward, causing the second pressure sensor 508 to press the power battery side plate. When the power battery side plate deforms and bulges downward, the corresponding first pressure sensor 508 will press the second pressure sensor 508 to compress the power battery side plate. The pressure sensor 503 will then display a reading. In this embodiment, there are nine first pressure sensors 503. Therefore, all nine first pressure sensors 503 will display a reading in succession. The moment the last first pressure sensor 503 also starts to display a reading, the intelligent terminal records the readings of the nine second pressure sensors 508 at this time and calculates the average value. This average value is the pressure resistance value of the power battery side plate. When this pressure value is reached, the power battery side plate will deform. Within this pressure range, the power battery side plate will not deform.

[0032] like Figure 5As shown, the end edges of the housing of the first pressure sensor 503, the end edges of the housing of the second pressure sensor 508, and the corners of the mounting through hole are rounded, and the end of the detection plate 501 is provided with a stop bar 509.

[0033] In this invention, because the corners of the mounting through-hole are rounded, the supporting force of the edge of the mounting through-hole on the side plate of the power battery is reduced during the testing process, thus affecting the accuracy of the test results and ultimately improving the accuracy of the test results.

[0034] like Figure 2 as well as Figure 7 As shown, the clamping assembly 3 includes a fixed plate 301 symmetrically arranged under the mounting plate 502. A second pneumatic telescopic rod 302 is connected to one end of the fixed plate 301 via a hinge shaft, and a drive rod 303 is connected to the other end of the fixed plate 301 via a hinge shaft. The end of the second pneumatic telescopic rod 302 is connected to the middle of the drive rod 303 via a hinge shaft. The drive rod 303 is bent at 90°. A horizontal bar 304 is provided at the end of the drive rod 303. A clamping strip 307 is connected to the middle of the horizontal bar 304. Suction cups 305 are connected to both ends of the horizontal bar 304. Two protrusions 306 are provided on the side of the fixed plate 301. The sidewalls of the two protrusions 306 are respectively adapted to the sidewalls of the second pneumatic telescopic rod 302. By setting the protrusions 306, the range of motion of the second pneumatic telescopic rod 302 is precisely limited, making the range of motion of the horizontal bar 304 and the clamping strip 307 more precise.

[0035] In this invention, a judgment threshold is stored in the smart terminal. When the actual test result is greater than the judgment threshold, it indicates that the power battery side plate is a qualified product. If the actual test result is less than the judgment threshold, it indicates that the power battery side plate is prone to deformation and is a defective product.

[0036] like Figure 2 as well as Figure 7 As shown, in actual use, when the power battery side plate slides onto the detection plate 501 and the end of the power battery side plate is aligned with the stop bar 509, the output end of the second pneumatic telescopic rod 302 outputs outward, causing the drive rod 303 to rotate around its root hinge axis. The drive rod 303 drives the cross bar 304 and the clamping bar 307 to rotate, so that the clamping bar 307 just releases the power battery side plate, completing the fixation of the power battery side plate. At the same time, the suction cup 305 adheres to the upper surface of the power battery side plate and sucks air under the action of the air pump to complete the adsorption of the power battery side plate, thereby further fixing the power battery side plate.

[0037] like Figure 2 as well as Figure 7As shown, after the inspection is completed, for the qualified power battery side panels, under the control of the intelligent terminal, the suction cup 305 near the defective product box 402 is inflated and stops adsorption, while the suction cup 305 near the finished product box 401 continues adsorption. Then, the output end of the second pneumatic telescopic rod 302 retracts inward, causing the drive rod 303 to rotate 190° in the opposite direction around its root hinge axis. Then, the suction cup 305 is also inflated and stops adsorption, and the qualified product slides into the finished product box 401. Similarly, for the unqualified power battery side panels, under the control of the intelligent terminal, the suction cup 305 near the finished product box 401 is inflated and stops adsorption, while the suction cup 305 near the defective product box 402 continues adsorption. Then, the output end of the second pneumatic telescopic rod 302 retracts inward, causing the drive rod 303 to rotate 190° in the opposite direction around its root hinge axis. Then, the suction cup 305 is also inflated and stops adsorption, and the unqualified product slides into the defective product box 402.

[0038] like Figure 3 As shown, the collection component 4 includes a finished product box 401 and a defective product box 402 installed on the frame 1. The finished product box 401 and the defective product box 402 are located below the sides of two fixed plates 301, respectively. This utility model can automatically distinguish between qualified products and unqualified defective products.

[0039] It should be added that the first pneumatic telescopic rod 505, the second pneumatic telescopic rod 302, and the suction cup 305 all have air inlets and air outlets, and are connected to the air pump's air inlet and outlet through pipes and solenoid valves. The pipe connections and working principles are not described in detail here.

[0040] like Figure 1-7As shown, the working principle of this utility model is as follows: First, several power battery side plates to be tested are placed inside the sliding plate 202. The power battery side plates slide onto the detection plate 501, and the ends of the power battery side plates are aligned with the stop strip 509. Then, the output end of the second pneumatic telescopic rod 302 extends outward, causing the drive rod 303 to rotate around its root hinge axis. The drive rod 303 drives the crossbar 304 and the clamping bar 307 to rotate, so that the clamping bar 307 just releases the power battery side plate, completing the fixation of the power battery side plate. At the same time, the suction cup 305 adheres to the upper surface of the power battery side plate and draws air under the action of the air pump to complete the adsorption of the power battery side plate, thereby further fixing the power battery side plate. Since the upper surface of the first pressure sensor 503 is aligned with the detection plate 509, the power battery side plate is fixed in place. The upper surfaces of plate 501 are aligned, therefore, the first pressure sensor 503 will not generate a reading at this time. Under the control of the smart terminal, the lower output end of the first pneumatic telescopic rod 505 drives the pressure plate 506 to slide downward. The pressure plate 506 drives the spring 507 and the second pressure sensor 508 to slide vertically downward, causing the second pressure sensor 508 to press the power battery side plate. When the power battery side plate deforms and bulges downward, the corresponding first pressure sensor 503 will show a reading. In this embodiment, there are 9 first pressure sensors 503, so all 9 first pressure sensors 503 will show readings successively. When the last first pressure sensor 503 also starts to show a reading... At the moment of counting, the intelligent terminal records the readings of the nine second pressure sensors 508, and then calculates the average value. This average value is the pressure resistance value of the power battery side plate. The power battery side plate deforms exactly when this pressure value is reached; within this pressure range, the power battery side plate does not deform. A judgment threshold is stored in the intelligent terminal. When the actual test result is greater than this judgment threshold, it indicates that the power battery side plate is a qualified product. If the actual test result is less than the judgment threshold, it indicates that the power battery side plate is prone to deformation and is a defective product. For qualified power battery side plates, under the control of the intelligent terminal, the suction cup 305 near the defective product box 402 is inflated and suction stops, while the side plate near the finished product box 402... The suction cup 305 on one side continues to adsorb, and then the output end of the second pneumatic telescopic rod 302 retracts inward, causing the drive rod 303 to rotate 190° in the opposite direction around its root hinge axis. Then the suction cup 305 is also inflated and stops adsorbing. The qualified products slide into the finished product box 401. Similarly, for the unqualified power battery side panels, under the control of the intelligent terminal, the suction cup 305 on the side near the finished product box 401 is inflated and stops adsorbing, while the suction cup 305 on the side near the defective product box 402 continues to adsorb. Then the output end of the second pneumatic telescopic rod 302 retracts inward, causing the drive rod 303 to rotate 190° in the opposite direction around its root hinge axis. Then the suction cup 305 is also inflated and stops adsorbing. The unqualified products slide into the defective product box 402.

[0041] The above description is merely a preferred embodiment of this utility model. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principle of this utility model, and these improvements and modifications should also be considered within the scope of protection of this utility model. Structures, devices, and operating methods not specifically described or explained in this utility model, unless otherwise specified or limited, shall be implemented using conventional methods in the field.

Claims

1. An automatic stamping and withstand voltage testing device for the side plate of a power battery, characterized in that: The device includes a frame (1), on which a transmission component (2), a clamping component (3) and a collection component (4) are provided. The end of the transmission component (2) is provided with a detection component (5). There are two sets of clamping components (3), which are symmetrically distributed about the transmission component (2). The two sets of clamping components (3) are used not only to limit the power battery side plate to be tested, but also to separate and transfer qualified or defective power battery side plates. The transmission component (2) includes a mounting rod (201) disposed on the frame (1), and a sliding plate (202) is provided on the mounting rod (201). The detection component (5) includes a detection plate (501) disposed at the horizontal end of the sliding plate (202) and a mounting plate (502) disposed on the frame (1); the detection plate (501) is provided with a stop bar (509) at its end. The clamping assembly (3) includes a fixing plate (301) symmetrically arranged under the mounting plate (502). The end of the fixing plate (301) is connected to a second pneumatic telescopic rod (302) via a hinge shaft. The other end of the fixing plate (301) is connected to a drive rod (303) via a hinge shaft. The end of the second pneumatic telescopic rod (302) is connected to the middle of the drive rod (303) via a hinge shaft. The drive rod (303) is bent at 90°. A horizontal bar (304) is provided at the end of the drive rod (303). A clamping bar (307) is connected in the middle of the horizontal bar (304). Suction cups (305) are connected at both ends of the horizontal bar (304). Two protrusions (306) are provided on the side of the fixing plate (301). The side walls of the two protrusions (306) are respectively adapted to the side walls of the second pneumatic telescopic rod (302).

2. The automatic stamping and withstand voltage testing device for the side plate of a power battery according to claim 1, characterized in that: The sliding plate (202) is inclined at one end and horizontal at the other end. A baffle (203) is provided on the side of the sliding plate (202).

3. The automatic stamping and withstand voltage testing device for the side plate of a power battery according to claim 2, characterized in that: The detection plate (501) has a plurality of mounting through holes, which are distributed in an array at equal intervals. The mounting plate (502) has a plurality of first pressure sensors (503) distributed in an array at equal intervals. The plurality of first pressure sensors (503) are located in the mounting through holes, and the upper surfaces of the plurality of first pressure sensors (503) are aligned with the upper surface of the detection plate (501).

4. The automatic stamping and withstand voltage testing device for the side plate of a power battery according to claim 3, characterized in that: The baffle (203) has a crossbar (504) at its end, and a first pneumatic telescopic rod (505) is provided in the middle of the crossbar (504). A pressure plate (506) is provided at the lower output end of the first pneumatic telescopic rod (505). Springs (507) are arranged in an equally spaced array on the pressure plate (506). A second pressure sensor (508) is provided at the lower end of the spring (507). Each second pressure sensor (508) is located directly above each corresponding first pressure sensor (503).

5. The automatic stamping and withstand voltage testing device for the side plate of a power battery according to claim 4, characterized in that: The end edges of the housing of the first pressure sensor (503), the end edges of the housing of the second pressure sensor (508), and the corners of the mounting through hole are rounded.

6. The automatic stamping and withstand voltage testing device for the side plate of a power battery according to claim 1, characterized in that: The collection component (4) includes a finished product box (401) and a defective product box (402) installed on the frame (1), with the finished product box (401) and the defective product box (402) located below the two fixing plates (301) respectively.

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