Compression resistance testing device for battery shell

Abstract

The invention provides a compression resistance testing device for a battery shell, and relates to the technical field of battery shell testing, and the compression resistance testing device comprises a device main body, a guiding assembly and a testing box. The guide assembly is mounted on the test platform; the test box is placed on the test platform, and the test box is located between the guide assemblies; wherein a downward pressing assembly is arranged in the device main body; according to the technical key points, a camera assembly can shoot a battery shell deformation picture after a pressure test and then send the battery shell deformation picture after the pressure test to a computer, and the computer analyzes and recognizes the picture through a corresponding convolutional layer model and judges whether the battery shell pressure resistance test is qualified or not. The mode can help related technicians to quickly know the result of the compression resistance test of the battery shell and directly take the qualified battery shell, and the mode is relatively convenient to use, high in detection efficiency, good in use effect and good in use prospect.

Description

Technical Field

[0001] The present invention relates to the technical field of battery housing testing, and specifically to a compressive testing device for a battery housing. Background Art

[0002] A battery housing refers to the outer shell or packaging material used to package and protect the electrolyte and electrodes inside the battery. It can not only protect the internal structure and components of the battery, but also prevent external substances from eroding the inside of the battery, and has functions such as flame retardancy, gas diffusion barrier, electron and electromagnetic wave isolation, etc.

[0003] The materials of battery housings usually include metals, plastics, and composite materials. Metal materials mainly include aluminum and steel, plastic materials mainly include polypropylene, polystyrene, polycarbonate, etc., and composite materials are mainly composed of composites of metals and plastics.

[0004] In order to ensure the safety of the battery housing, therefore, it is necessary to conduct a compressive test on the battery housing. The compressive test of the battery housing refers to testing the bearing capacity of the battery housing when it is subjected to external pressure by applying pressure, so as to ensure its stability and safety under various mechanical conditions. This test is mainly used to evaluate the mechanical properties of the battery housing, including compressive strength and impact resistance, etc.

[0005] The existing patent application publication number is CN218995013, and the utility model patent with the patent name of a compressive experiment device for a lithium battery housing records a compressive experiment device for a lithium battery housing that can test the impact resistance of the lithium battery housing from the vertical direction. The present utility model provides such a compressive experiment device for a lithium battery housing, including a support frame, a support plate, rollers, a motor, a wire reel, etc.; the support plate is slidably installed on the support frame, rollers are symmetrically and rotatably installed on both sides of the top and bottom of the support plate, a motor is fixedly connected to the middle of the support plate, a wire reel is rotatably installed in the middle of the support plate, and the wire reel is connected to the output shaft of the motor. Through the cooperation of the support plate, rollers, clamping plates, elastic members, and pull ropes, the present utility model conducts impact experiments on the lithium battery housing with different impact objects in the vertical direction, and the ultimate compressive force that the lithium battery housing can withstand against impact objects of different masses can be obtained.

[0006] However, it has certain drawbacks in use. When the existing technology conducts a compressive test on the housing of a new energy battery, it usually requires manual placement of the housing into the testing device, and then pressure is applied to the housing for testing. Although this testing method can achieve compressive testing, after the testing is completed, it still requires manual observation and screening to classify the qualified and unqualified housings, resulting in a relatively long time-consuming for the entire testing process, a large amount of manual labor, and prone to misjudgment. Therefore, a compressive testing device for a battery housing has been developed. Summary of the Invention

[0007] To overcome the deficiencies of the prior art, an anti-pressure testing device for a battery housing provided by an embodiment of the present application is provided with a camera assembly. The camera assembly can capture images of the deformation of the battery housing after the pressure test, and then send the images of the deformation of the battery housing after the pressure test to a computer. The computer analyzes and identifies the images through a corresponding convolutional layer model to determine whether the anti-pressure test of the battery housing is qualified. This method can help relevant technical personnel quickly understand the results of the anti-pressure test of the battery housing, directly pick up the qualified battery housing. This method is relatively convenient to use, has high detection efficiency, good use effect, and has good application prospects.

[0008] The technical solution adopted by the embodiment of the present application to solve its technical problems is:

[0009] An anti-pressure testing device for a battery housing, comprising a device main body, a guiding assembly, and a testing box:

[0010] A testing platform is arranged inside the device main body;

[0011] The guiding assembly is installed on the testing platform;

[0012] The testing box is placed on the testing platform, and the testing box is located between the guiding assemblies;

[0013] Among them, a pressing-down assembly is arranged inside the device main body, and a camera assembly for capturing images of the deformation of the battery housing after the pressure test is arranged at a position near the rear end of the upper end surface of the testing platform.

[0014] In a possible implementation manner, the camera assembly includes a fixed vertical plate, a rotating member, and a camera:

[0015] The fixed vertical plate is fixedly installed at a position near the rear end of the upper end surface of the testing platform;

[0016] The rotating member is rotatably installed on the fixed vertical plate;

[0017] The camera is installed on the rotating member;

[0018] Among them, after the anti-pressure test of the battery housing, the rotating member drives the camera to rotate to directly above the testing box.

[0019] In a possible implementation manner, the rotating member includes a motor and a rotating frame:

[0020] The motor is fixedly installed on the fixed vertical plate;

[0021] One end of the rotating frame is fixedly installed on the output shaft of the motor;

[0022] Among them, the camera is fixedly installed at a position on the lower end surface of the rotating frame far from the motor.

[0023] In a possible implementation, the pressing-down component includes a hydraulic component, a lower pressing plate, and a guiding component:

[0024] The hydraulic component is fixedly installed inside the device main body;

[0025] The lower pressing plate is fixedly installed at the telescopic end of the hydraulic component;

[0026] The number of guiding components is two groups, and the guiding components are fixedly installed inside the device main body;

[0027] Wherein, the lower pressing plate is slidably installed on the guiding component, and the hydraulic component drives the lower pressing plate to move up and down along the guiding component.

[0028] In a possible implementation, the guiding component includes a guiding seat. The number of guiding seats is several groups. The guiding seats are arranged on the outer side of the test box, and guiding rollers that fit the side end face of the test box are arranged on the guiding seats.

[0029] In a possible implementation, an electric push rod is fixedly installed on the fixed vertical plate. After the battery housing is tested for compressive strength, the electric push rod pushes the test box to move along the guiding component.

[0030] In a possible implementation, the test box includes a frame main body and a bottom plate:

[0031] A connecting component is arranged on the outer surface of the frame main body;

[0032] The bottom plate is rotatably installed at the lower end of the frame main body;

[0033] Wherein, the bottom plate is connected to the frame main body through the connecting component.

[0034] In a possible implementation, the connecting component includes several groups of clamping seats, which are installed at a position near the bottom end of the front end face of the frame main body. Several groups of clamping parts are arranged on the front end face of the bottom plate, and the clamping parts are clamped with the clamping seats.

[0035] In a possible implementation, a supporting tray is fixedly installed on the fixed vertical plate, and one end of the rotating frame close to the camera is lapped on the supporting tray.

[0036] In a possible implementation, a suction cup component is fixedly installed at a position near the bottom feet on the lower end face of the device main body. An industrial control computer connected to a computer is arranged inside the device main body, and the industrial control computer transmits the deformed pictures of the battery housing after the pressure test taken by the camera component to the computer.

[0037] The beneficial effects of this application are:

[0038] First, the present invention provides a compressive strength testing device for a battery housing, which is provided with a camera assembly. The camera assembly can capture the deformed images of the battery housing after the pressure test, and then send the deformed images of the battery housing after the pressure test to a computer. The computer analyzes and identifies the images through a corresponding convolutional layer model to determine whether the compressive strength test of the battery housing is qualified. This method can help relevant technicians quickly understand the results of the compressive strength test of the battery housing, directly obtain the qualified battery housing. This method is relatively convenient to use, has high detection efficiency, good use effect, and has good application prospects.

[0039] Second, the present invention describes a compressive strength testing device for a battery housing, which is guided by a guiding assembly during use to limit the position of the test chamber, thereby improving the accuracy of the results of the compressive strength test of the battery housing. Moreover, in cooperation with the electric push rod, it can conveniently and quickly push out the product after the compressive strength test, facilitating relevant personnel to sort out the tested products. This method is relatively convenient to use and has good application prospects.

[0040] Third, the present invention describes a compressive strength testing device for a battery housing, which changes the structure of the test chamber to a structure with a flip - up bottom plate. After the compressive strength test of the battery housing is completed, after taking out the qualified battery housing, the bottom plate can be directly flipped to directly pour out all unqualified battery housings, which is relatively convenient for cleaning. This method is relatively convenient to use, improves the detection efficiency, has good use effect, and has good application prospects. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] Figure 1 is the overall structure schematic diagram of a compressive strength testing device for a battery housing according to the present invention;

[0042] Figure 2 is the structural diagram of a compressive strength testing device for a battery housing according to the present invention from other angles;

[0043] Figure 3 is the partial structural diagram of a compressive strength testing device for a battery housing according to the present invention;

[0044] Figure 4 is the partial exploded structural diagram of a compressive strength testing device for a battery housing according to the present invention;

[0045] Figure 5 is the structural diagram of the fixed vertical plate in a compressive strength testing device for a battery housing according to the present invention;

[0046] Figure 6 is the structural diagram of the test platform in a compressive strength testing device for a battery housing according to the present invention;

[0047] Figure 7 is the structural diagram of the test chamber in a compressive strength testing device for a battery housing according to the present invention.

[0048] Reference signs: 1, device main body; 2, test platform; 3, guiding component; 31, guiding roller; 4, test box; 41, bottom plate; 42, clamping seat; 43, clamping part; 5, pressing-down component; 51, lower pressing plate; 52, guiding part; 6, camera component; 61, fixed vertical plate; 62, camera; 63, motor; 64, rotating frame; 65, electric push rod; 66, supporting tray. Specific implementation mode

[0049] In the embodiment of the present application, by providing a compressive strength testing device for a battery case, it solves the problem that in the prior art, when performing compressive strength detection on the case of a new energy battery, it is usually necessary to manually place the case into the detection device and then apply pressure to the case for detection. Although this detection method can achieve compressive strength detection, after the detection is completed, it is still necessary to manually observe and screen to classify the qualified and unqualified cases, resulting in a long time-consuming and large manual labor volume in the entire detection process, and it is easy to make misjudgments. The general idea is as follows:

[0050] Embodiment 1:

[0051] This embodiment introduces the specific structure of a compressive strength testing device for a battery case, specifically referring to Figures 1 to 7 as shown, including a device main body 1, a guiding component 3 and a test box 4:

[0052] A test platform 2 is arranged inside the device main body 1, which is a platform for testing the battery case; the guiding component 3 is installed on the test platform 2 and is used to guide the movement of the test box 4; the test box 4 is placed on the test platform 2, and the test box 4 is located between the guiding components 3; among them, a pressing-down component 5 is arranged inside the device main body 1, and a camera component 6 for taking deformation pictures of the battery case after pressure testing is arranged at a position near the rear end of the upper end surface of the test platform 2.

[0053] During use, place the battery case to be tested on the test box 4, then push the test box 4 to the test platform 2 through the guiding component 3, start the pressing-down component 5 for compressive strength testing, start the camera component 6 for taking pictures after the test, and transmit the pictures to a convolutional neural network constructed based on existing compressive strength test pictures, and realize the analysis of the pictures based on the convolutional neural network, so as to judge the numbers of the qualified battery cases in the test box 4, and then classify the qualified battery cases and unqualified battery cases, and re-arrange the battery cases to perform subsequent tests.

[0054] The camera component 6 includes a fixed vertical plate 61, a rotating part and a camera 62:

[0055] The fixed vertical plate 61 is fixedly installed at a position near the rear end of the upper end surface of the test platform 2; the rotating member is rotatably installed on the fixed vertical plate 61; the camera 62 is installed on the rotating member;

[0056] Among them, after the battery housing compression test, the rotating member drives the camera 62 to rotate to directly above the test box 4.

[0057] The camera 62 uses an industrial camera, and its specific model is CAM-CIC-10MR-10-GC.

[0058] The design of the rotating member enables the camera 62 to be far away from the test position, so that the camera 62 can be effectively protected, and it can be located directly above the product to be tested after the test for direct shooting, and the shooting effect is good, so that the results of subsequent analysis are more accurate.

[0059] The rotating member includes a motor 63 and a rotating frame 64:

[0060] The motor 63 is fixedly installed on the fixed vertical plate 61; the motor 63 can also be replaced by a motor.

[0061] One end of the rotating frame 64 is fixedly installed on the output shaft of the motor 63;

[0062] Among them, the camera 62 is fixedly installed at a position on the lower end surface of the rotating frame 64 far away from the motor 63. This setting enables the camera 62 to be directly above the product when the rotating frame 64 rotates to a certain extent, and the use effect is better.

[0063] After the test, the motor 63 is started, and the motor 63 drives the rotating frame 64 to rotate to adjust the position of the camera 62 so that the camera 62 is directly above the battery housing for shooting.

[0064] The pressing component 5 includes a hydraulic component, a lower pressing plate 51 and a guiding component 52:

[0065] The hydraulic component is fixedly installed inside the device main body 1, and the hydraulic component uses a hydraulic cylinder;

[0066] The lower pressing plate 51 is fixedly installed at the telescopic end of the hydraulic component. A pressing block is fixedly installed on the lower end surface of the lower pressing plate 51. The area of the lower pressing plate 51 is larger than the upper end area of the test box 4, so as to achieve a better protection effect;

[0067] The number of the guiding components 52 is two groups, and the guiding components 52 are fixedly installed inside the device main body 1;

[0068] Among them, the lower pressing plate 51 is slidably installed on the guiding component 52, and the hydraulic component drives the lower pressing plate 51 to move up and down along the guiding component 52.

[0069] The guiding member 52 uses guiding columns to achieve the effect of guiding the up-and-down sliding of the lower pressing plate 51, so that the pressing block can stably press down the battery housing inside the test box 4.

[0070] The present invention provides a compressive strength testing device for a battery housing, which is provided with a camera assembly 6. The camera assembly 6 can capture pictures of the deformation of the battery housing after the pressure test, and then send the pictures of the deformation of the battery housing after the pressure test to a computer. The computer analyzes and identifies the pictures through a corresponding convolutional layer model to determine whether the compressive strength test of the battery housing is qualified. This method can help relevant technical personnel quickly understand the results of the compressive strength test of the battery housing, directly pick up the qualified battery housing. This method is relatively convenient to use, has high detection efficiency, good use effect, and has good application prospects.

[0071] Embodiment 2

[0072] Based on Embodiment 1, as Figures 1 - 7 shown, this embodiment also records the following structure:

[0073] The guiding assembly 3 includes guiding seats. The number of guiding seats is several groups. The guiding seats are arranged on the outer side of the test box 4. Guiding rollers 31 that fit the side end face of the test box 4 are arranged on the guiding seats. The arrangement of the guiding rollers 31 can facilitate the movement of the test box 4 and prevent the position of the test box 4 from shifting. Cooperating with the baffle on the upper end face of the test platform 2, when the test box 4 contacts the baffle, the position of the test box 4 can be limited, which is convenient for relevant staff to limit the position of the test box 4. This method is relatively convenient to use.

[0074] An electric push rod 65 is fixedly installed on the fixed vertical plate 61. After the compressive strength test of the battery housing, the electric push rod 65 pushes the test box 4 to move along the guiding assembly 3. After the compressive strength test, the electric push rod 65 is started, and the electric push rod 65 drives the test box 4 to move along the guiding assembly 3, so as to directly push out the test box 4, which is convenient for relevant technical personnel to take out the battery housing.

[0075] The present invention records a compressive strength testing device for a battery housing. When in use, it is guided by the guiding assembly to limit the position of the test box 4, so that the accuracy of the shooting result of the compressive strength test of the battery housing can be improved. Moreover, cooperating with the electric push rod 65, the product after the compressive strength test can be pushed out conveniently and quickly, which is convenient for relevant personnel to sort out the tested products. This method is relatively convenient to use and has good application prospects.

[0076] Embodiment 3

[0077] Based on Embodiment 2, as Figures 1 - 7 shown, this embodiment also records the following structure:

[0078] The test box 4 includes a frame body and a bottom plate 41:

[0079] A connection component is provided on the outer surface of the frame body;

[0080] The bottom plate 41 is rotatably installed at the lower end of the frame body;

[0081] Wherein, the bottom plate 41 is connected to the frame body through the connection component.

[0082] The connection component includes a clamping seat 42, the number of which is several groups, and it is installed at a position near the bottom end of the front end face of the frame body. Several groups of clamping parts 43 are provided on the front end face of the bottom plate 41, and the clamping parts 43 are clamped with the clamping seat 42. The connection component can also adopt other existing connection structures, such as a pin structure, etc. to achieve limiting, and the use effect of this method is good.

[0083] A support bracket 66 is fixedly installed on the fixed vertical plate 61. One end of the rotary frame 64 close to the camera 62 is lapped on the support bracket 66, which can support the rotary frame 64, thereby extending the stability and service life of the rotary frame 64.

[0084] A suction cup component is fixedly installed on the lower end face of the device main body 1 near the feet, which can increase the stability of the entire device main body 1. An industrial control computer connected to the computer is provided inside the device main body 1, and the industrial control computer transmits the deformed pictures of the battery shell after the pressure test taken by the imaging component 6 to the computer.

[0085] An audible and visual alarm and other electronic devices are also provided on the device main body 1. During use, the industrial control computer controls the operation of the entire device. The industrial control computer is connected to the computer and transmits the deformed pictures of the battery shell after the pressure test in real time. The test results are judged through the pictures to realize the automatic identification of the battery shell, thereby reducing the workload of relevant staff.

[0086] The present invention describes a compressive test device for a battery shell, which changes the structure of the test box 4 and changes the test box 4 into a structure with a flip-up bottom plate 41. After the compressive test of the battery shell is completed, after taking out the qualified battery shells, the bottom plate 41 can be directly flipped to directly pour out all unqualified battery shells, which is more convenient for cleaning. This method is more convenient to use, improves the detection efficiency, has a good use effect, and has a good application prospect.

[0087] It should be noted that when the anti-pressure test device for a battery housing of the present invention is in use, the battery housing to be tested is placed on the test box 4, and then the test box 4 is pushed onto the test platform 2 through the guiding component 3. The pressing component 5 is started for the anti-pressure test. After the test, the motor 63 is started, and the motor 63 drives the rotating frame 64 to rotate, adjusting the position of the camera 62 so that the camera 62 is located directly above the battery housing for shooting. And the picture is transmitted to the convolutional neural network constructed based on the existing anti-pressure test pictures through the industrial control computer, and the analysis of the picture is realized based on the convolutional neural network, so as to judge the number of the qualified battery housings in the test box 4. After the anti-pressure test, the electric push rod 65 is started, and the electric push rod 65 drives the test box 4 to move along the guiding component 3, so as to directly push out the test box 4. The analysis result is sent to the relevant staff. The relevant staff takes out the qualified battery housings, opens the connecting component, makes the bottom plate 41 turn over, pours out the unqualified battery housings, cleans the bottom plate 41 and then fixes the bottom plate 41, and then rearranges the battery housings to carry out subsequent tests.

[0088] Finally, it should be noted that: Obviously, the above embodiments are only examples for clearly illustrating the present invention, rather than limitations on the implementation manners. For those of ordinary skill in the art, other different forms of changes or variations can be made on the basis of the above description. It is not necessary and impossible to list all the implementation manners here. And the obvious changes or variations derived therefrom are still within the protection scope of the present invention.

Claims

1. A compressive test device for a battery housing, characterized in that, Comprising: A device main body (1) with a test platform (2) disposed inside; A guiding component (3) installed on the test platform (2); A test box (4) placed on the test platform (2) and located between the guiding components (3); Wherein, a pressing component (5) is disposed inside the device main body (1), and an imaging component (6) for taking pictures of the deformation of the battery housing after pressure testing is disposed at a position near the rear end of the upper end surface of the test platform (2).

2. The compressive test device for a battery housing according to claim 1, wherein: The imaging component (6) includes: A fixed vertical plate (61) fixedly installed at a position near the rear end of the upper end surface of the test platform (2); A rotating member rotatably installed on the fixed vertical plate (61); A camera (62) installed on the rotating member; Wherein, after the compressive test of the battery housing, the rotating member drives the camera (62) to rotate to directly above the test box (4).

3. The compressive testing device for a battery case according to claim 2, characterized in that: The rotating member includes: A motor (63) fixedly installed on the fixed vertical plate (61); A rotating frame (64) with one end fixedly installed on the output shaft of the motor (63); Wherein, the camera (62) is fixedly installed at a position on the lower end surface of the rotating frame (64) far from the motor (63).

4. The compressive testing device for a battery casing according to claim 3, wherein: The pressing component (5) includes: A hydraulic component fixedly installed inside the device main body (1); A lower pressing plate (51) fixedly installed at the telescopic end of the hydraulic component; Guiding members (52), two groups in number, fixedly installed inside the device main body (1); Wherein, the lower pressing plate (51) is slidably installed on the guiding members (52), and the hydraulic component drives the lower pressing plate (51) to move up and down along the guiding members (52).

5. The compressive test device for a battery housing according to claim 4, wherein: The guiding component (3) includes guiding seats, several groups in number, disposed on the outside of the test box (4), and guiding rollers (31) that are in contact with the side end surface of the test box (4) are provided on the guiding seats.

6. The compressive test device for a battery housing according to claim 5, characterized in that: An electric push rod (65) is fixedly installed on the fixed vertical plate (61), and after the compressive test of the battery housing, the electric push rod (65) pushes the test box (4) to move along the guiding component (3).

7. The compressive test device for a battery case according to claim 6, characterized in that: The test box (4) includes: A frame main body with a connecting component disposed on its outer surface; A bottom plate (41) rotatably installed at the lower end of the frame main body; Wherein, the bottom plate (41) is connected to the frame main body through the connecting component.

8. The compressive testing device for a battery case according to claim 7, characterized in that: The connecting component includes clamping seats (42), several groups in number, installed at a position near the bottom end of the front end surface of the frame main body, and several groups of clamping members (43) are provided on the front end surface of the bottom plate (41), and the clamping members (43) are clamped with the clamping seats (42).

9. The compressive test device for a battery housing according to claim 8, wherein: A supporting tray (66) is fixedly installed on the fixed vertical plate (61), and one end of the rotating frame (64) near the camera (62) is lapped on the supporting tray (66).

10. A compressive testing device for a battery housing according to claim 9, characterized in that: A suction cup component is fixedly installed at a position near the bottom feet on the lower end surface of the device main body (1), and an industrial control computer connected to a computer is disposed inside the device main body (1), and the industrial control computer transmits the pictures of the deformation of the battery housing after pressure testing taken by the imaging component (6) to the computer.

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