A detection system for plastic shell of battery

Abstract

The invention discloses a detection system for a plastic shell of a battery, belonging to the technical field of battery plastic shell detection, comprising a placement frame, wherein the placement frame is used to place the plastic shell of the battery, an impact device is installed at the upper end of the placement frame, a plurality of detection components are installed inside the placement frame, a plurality of movable grooves are opened on the inner wall of the placement frame, the detection component comprises a movable rod slidably installed inside the movable groove, a baffle is fixedly installed on one end of the movable rod away from the movable groove, a compression spring is fixedly installed on one end of the movable rod located inside the movable groove, an electronic ruler is fixedly installed at a position corresponding to the movable rod on the inner wall of the placement frame, and an end of the electronic ruler is fixedly connected to a side of the movable rod located inside the movable groove. The invention can automatically detect the plastic shell of the battery through the detection component, judge the deformation degree and recovery degree after the impact, thereby judging whether the plastic shell of the battery is damaged and judging whether the plastic shell of the battery meets the standard.

Description

Technical Field

[0001] The present invention relates to the technical field of battery plastic shell detection, and more specifically, to a detection system for a plastic shell of a storage battery. Background Art

[0002] The battery plastic shell is an important part of the battery, which plays a role in protecting the internal components of the battery, preventing leakage, and dissipating heat. Different battery types (lead-acid batteries, lithium-ion batteries, etc.) have slightly different requirements for the shell.

[0003] After the production of battery plastic shells, their strength and rigidity need to be tested. The battery plastic shells are required to have certain impact resistance and pressure resistance functions to protect the batteries inside from damage. Traditional testing equipment is not convenient for detecting the deformation and recovery of battery plastic shells. It can only determine whether the battery plastic shells are damaged, and the detection effect is poor. In view of this, the present invention provides a battery plastic shell detection system. Summary of the invention

[0004] In view of the problems existing in the prior art, the object of the present invention is to provide a detection system for the plastic shell of a battery.

[0005] To solve the above problems, the present invention adopts the following technical solutions.

[0006] A detection system for a plastic shell of a battery, comprising a placement frame, wherein the placement frame is used to place the plastic shell of the battery, and an impact device is installed on the upper end of the placement frame, and the impact device impacts the plastic shell of the battery;

[0007] A plurality of detection components are installed inside the placement frame, and the detection components support and position the outer wall of the plastic shell. A plurality of movable grooves are opened on the inner wall of the placement frame. The detection components include a movable rod slidably installed inside the movable groove, and a baffle is fixedly installed at one end of the movable rod away from the movable groove, and the baffle is in contact with the plastic shell of the battery. A compression spring is fixedly installed at one end of the movable rod located inside the movable groove;

[0008] An electronic ruler is fixedly installed at positions corresponding to the inner wall of the placement frame and the moving rod, and an end of the electronic ruler is fixedly connected to one side of the moving rod located inside the moving groove.

[0009] Furthermore, a plurality of movable grooves are formed at the lower end of the movable rod, and a plurality of limiting rods for limiting are slidably mounted on the movable grooves, and the lower end of the limiting rod close to the movable groove is in an inclined structure.

[0010] Furthermore, a tension spring is fixedly mounted on the upper end of the limit rod, and the upper end of the tension spring is fixedly connected to the upper end of the inner wall of the movable groove, and the tension spring presses the limit rod.

[0011] Furthermore, a ventilation groove is provided inside the movable rod, and the ventilation groove is connected to the interior of multiple movable grooves. A piston groove is provided on the side of the movable rod away from the movable groove. A piston plate is slidably installed inside the piston groove, and the piston plate squeezes the air inside the piston groove. A push rod is fixedly installed on the end of the piston plate away from the movable groove, and the push rod squeezes the outer wall of the plastic shell of the battery.

[0012] Furthermore, a card slot is provided at a position corresponding to the limiting rod at the lower end of the movable slot, and a card block is slidably installed in the card slot. The upper end of the card block on the side away from the compression spring is inclined, and the inclined part on the card block is in compression contact with the inclined part on the limiting rod, and a support spring is fixedly installed at the lower end of the card block, and the support spring squeezes the card block.

[0013] Furthermore, a plurality of image acquisition modules are installed inside the placement frame, and the image acquisition modules acquire images of the outer wall of the plastic shell of the storage battery, and image acquisition modules are installed on the upper side and the lower side of each moving rod.

[0014] Furthermore, a data processing module is installed on the outer wall of the placement frame, and the image acquisition module transmits the acquired image information to the data processing module, and trains the target detection model (Faster R-CNN, YOLOv5, SSD) to identify the cracks on the image. The data processing module compares the image with the existing complete battery plastic shell image through the target detection model to determine whether there are cracks on the surface of the battery plastic shell after the impact.

[0015] Furthermore, a calculation module is fixedly installed on the outer wall of the placement frame, and the electronic ruler transmits the collected data to the calculation module, and the calculation module calculates the deformation degree and recovery degree of the battery plastic shell;

[0016] An evaluation module and an alarm module are fixedly installed on the outer wall of the placement frame. The calculation module transmits the calculated data to the evaluation module, and the evaluation module evaluates the integrity of the battery plastic shell. When the battery plastic shell is evaluated to be unqualified, a signal is transmitted to the alarm module, and an alarm is issued through the alarm module. The data processing module transmits the processed data to the evaluation module. When cracks are detected on the battery plastic shell, the battery plastic shell is determined to be an unqualified product, and a signal is transmitted to the alarm module, and an alarm is issued through the alarm module.

[0017] Furthermore, the calculation module calculates the maximum deformation degree of the battery plastic shell by the following formula:

[0018] ;

[0019] Among them, when is the maximum deformation degree of the battery plastic shell, It is the value when the electronic ruler is stretched to the longest when the battery plastic shell is impacted. It is the value on the electronic ruler when the battery plastic shell is placed inside the placement frame and the rear baffle is in contact with the outer wall of the battery plastic shell;

[0020] The calculation module calculates the recovery degree of the battery plastic shell after impact through the following formula:

[0021] ;

[0022] in, It is the recovery degree of the battery plastic shell after being impacted. The value when the plastic shell of the battery no longer deforms after being impacted and the electronic ruler value is stable. It is the value on the electronic ruler when the battery plastic shell is placed inside the placement frame and the back plate fits against the outer wall of the battery plastic shell.

[0023] Further, the evaluation module determines whether the plastic housing of the battery is damaged according to the calculation module;

[0024] when When it is greater than the specified standard data, it means that the plastic shell of the battery is damaged, thus controlling the alarm module to alarm;

[0025] when When it is less than the specified standard data, it means that the plastic shell of the battery is not damaged, and the alarm module will not be controlled to alarm;

[0026] when When it is less than the specified standard data, it means that the plastic shell of the battery is damaged, thereby controlling the alarm module to sound an alarm.

[0027] Compared with the prior art, the present invention has the following beneficial effects:

[0028] The present invention can automatically detect the battery plastic shell through the detection component, determine the deformation and recovery degree after the impact, and thus determine whether the battery plastic shell is damaged and whether the battery plastic shell meets the standards. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0030] Figure 2 It is a schematic diagram of the internal structure of the placement frame of the present invention;

[0031] Figure 3 For the present invention Figure 2 A schematic diagram of the structure enlargement in the middle;

[0032] Figure 4 It is a schematic diagram of the structure of the electronic ruler of the present invention;

[0033] Figure 5 It is a schematic diagram of the internal structure of the mobile rod of the present invention;

[0034] Figure 6 It is a partial framework diagram of the system of the present invention;

[0035] Figure 7 It is the work flow chart of the present invention.

[0036] Description of the numbers in the figure:

[0037] 1. Placement frame; 101. Moving slot; 102. Electronic ruler; 103. Card slot; 104. Card block; 105. Support spring; 106. Image acquisition module; 107. Data processing module; 108. Calculation module; 109. Evaluation module; 110. Alarm module;

[0038] 2. Impact equipment;

[0039] 3. Detection assembly; 301. Moving rod; 302. Baffle; 303. Compression spring; 304. Movable groove; 305. Limit rod; 306. Tension spring; 307. Ventilation groove; 308. Piston groove; 309. Piston plate; 310. Push rod. DETAILED DESCRIPTION

[0040] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention; it is obvious that the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments, and all other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making creative work are within the scope of protection of the present invention.

[0041] See also Figures 1 to 7 A detection system for a plastic shell of a battery comprises a placing frame 1, wherein the placing frame 1 is used to place the plastic shell of the battery, and an impact device 2 is installed on the upper end of the placing frame 1, and the impact device 2 impacts the plastic shell of the battery;

[0042] A plurality of detection components 3 are installed inside the placement frame 1, and the detection components 3 support and position the outer wall of the plastic shell. A plurality of moving grooves 101 are opened on the inner wall of the placement frame 1. The detection component 3 includes a moving rod 301 slidably installed inside the moving groove 101, and a baffle 302 is fixedly installed at one end of the moving rod 301 away from the moving groove 101, and the baffle 302 contacts the plastic shell of the battery, and a compression spring 303 is fixedly installed at one end of the moving rod 301 located inside the moving groove 101;

[0043] An electronic ruler 102 is fixedly installed at positions corresponding to the inner wall of the placement frame 1 and the moving rod 301 , and an end of the electronic ruler 102 is fixedly connected to one side of the moving rod 301 located inside the moving groove 101 .

[0044] By adopting the above technical solution, after the battery plastic shell is placed into the placement frame 1, the impact device 2 is used to impact the battery plastic shell, so that the battery plastic shell is deformed. At this time, after the battery plastic shell is deformed, its outer wall can squeeze the baffle 302 and the moving rod 301, so that the moving rod 301 moves. After the moving rod 301 moves, it can pull the end of the electronic ruler 102, so that the electronic ruler 102 extends. At this time, the scale on the electronic ruler 102 will change, and the electronic ruler 102 can record the deformation degree of the battery plastic shell.

[0045] A plurality of movable grooves 304 are provided at the lower end of the movable rod 301, and a plurality of limiting rods 305 for limiting are slidably installed in the movable groove 304. The lower end of the limiting rod 305 close to the movable groove 101 is in an inclined structure;

[0046] A tension spring 306 is fixedly installed on the upper end of the limiting rod 305, and the upper end of the tension spring 306 is fixedly connected to the upper end of the inner wall of the movable groove 304, and the tension spring 306 squeezes the limiting rod 305;

[0047] A ventilation groove 307 is provided inside the moving rod 301, and the ventilation groove 307 is connected to the inside of the plurality of movable grooves 304. A piston groove 308 is provided inside the moving rod 301 on a side away from the moving groove 101. A piston plate 309 is slidably installed inside the piston groove 308. The piston plate 309 squeezes the air inside the piston groove 308. A push rod 310 is fixedly installed on one end of the piston plate 309 away from the moving groove 101. The push rod 310 squeezes the outer wall of the plastic shell of the battery.

[0048] A card slot 103 is provided at a position at the lower end of the movable slot 101 corresponding to the limiting rod 305, and a card block 104 is slidably installed inside the card slot 103. The upper end of the card block 104, which is away from the compression spring 303, has an inclined structure, and the inclined part of the card block 104 is in compression contact with the inclined part of the limiting rod 305. A support spring 105 is fixedly installed at the lower end of the card block 104, and the support spring 105 squeezes the card block 104.

[0049] By adopting the above technical solution, when the baffle plate 302 is squeezed, it will drive the moving rod 301 to move. After that, the moving rod 301 can squeeze the compression spring 303, so that the compression spring 303 is deformed. When the impact is over, the compression spring 303 can squeeze the moving rod 301 to make the moving rod 301 move to the initial position. When the moving rod 301 moves, it will drive the limiting rod 305 to move. At this time, the limiting rod 305 will be blocked by the block 104. When the plastic shell of the battery continues to rebound under the action of its own toughness, the tension spring 306 can pull the limiting rod 305 up. After the limiting rod 305 rises, it can be separated from the block 104. At this time, the limiting rod 305 will no longer be blocked by the block 104, and then the moving rod 301 can move. The limit rod 305 is driven to pass through the upper side of the block 104, and when the moving rod 301 moves, the push rod 310 can be driven to move. After the push rod 310 moves, it will be blocked by the plastic shell of the battery. At this time, the push rod 310 will move relative to the moving rod 301 again. At this time, the push rod 310 can drive the piston plate 309 to move. The movement of the piston plate 309 can squeeze the air inside the piston groove 308, so that the air enters the movable groove 304. At this time, the limit rod 305 will drop again and be blocked by the block 104. When the plastic shell of the battery no longer rebounds, the push rod 310 cannot move relative to the limit rod 305, so that the limit rod 305 cannot rise under the action of the tension spring 306, thereby fixing the moving rod 301.

[0050] A plurality of image acquisition modules 106 are installed inside the placement frame 1, and the image acquisition modules 106 acquire images of the outer wall of the plastic shell of the battery, and an image acquisition module 106 is installed on the upper side and the lower side of each moving rod 301;

[0051] The outer wall of the placement frame 1 is installed with a data processing module 107. The image acquisition module 106 transmits the acquired image information to the data processing module 107, and trains the target detection model (Faster R-CNN, YOLOv5, SSD) to identify the cracks on the image. The data processing module 107 compares the image with the existing complete battery plastic shell image through the target detection model to determine whether there are cracks on the surface of the battery plastic shell after the impact.

[0052] A calculation module 108 is fixedly installed on the outer wall of the placement frame 1, and the electronic ruler 102 transmits the collected data to the calculation module 108, and the calculation module 108 calculates the deformation degree and recovery degree of the battery plastic shell;

[0053] An evaluation module 109 and an alarm module 110 are fixedly installed on the outer wall of the placement frame 1. The calculation module 108 transmits the calculated data to the evaluation module 109, and the evaluation module 109 evaluates the integrity of the battery plastic shell. When the battery plastic shell is evaluated to be unqualified, a signal is transmitted to the alarm module 110, and an alarm is issued through the alarm module 110. The data processing module 107 transmits the processed data to the evaluation module 109. When cracks are detected on the battery plastic shell, it is determined that the battery plastic shell is an unqualified product, and a signal is transmitted to the alarm module 110, and an alarm is issued through the alarm module 110.

[0054] The calculation module 108 calculates the maximum deformation degree of the battery plastic shell by the following formula:

[0055] ;

[0056] in, is the maximum deformation degree of the battery plastic shell, is the value of the electronic ruler 102 when the plastic shell of the battery is stretched to its longest length when it is impacted. The value on the electronic ruler 102 when the battery plastic shell is placed in the placement frame 1 and the rear baffle 302 is in contact with the outer wall of the battery plastic shell;

[0057] The calculation module 108 calculates the recovery degree of the battery plastic shell after being impacted by the following formula:

[0058] ;

[0059] in, It is the recovery degree of the battery plastic shell after being impacted. It is the value when the plastic shell of the battery no longer deforms after being impacted and the value of the electronic ruler 102 is stable. The value on the electronic ruler 102 when the battery plastic shell is placed in the placement frame 1 and the rear baffle 302 is in contact with the outer wall of the battery plastic shell;

[0060] The evaluation module 109 determines whether the plastic housing of the battery is damaged according to the calculation module 108;

[0061] when When it is greater than the specified standard data, it means that the plastic shell of the battery is damaged, so the alarm module 110 is controlled to alarm;

[0062] when When it is less than the specified standard data, it means that the plastic shell of the battery is not damaged, and the alarm module 110 will not be controlled to alarm at this time;

[0063] when When it is less than the specified standard data, it means that the plastic shell of the battery is damaged, so the alarm module 110 is controlled to alarm.

[0064] The above are only preferred specific implementations of the present invention; however, the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical solutions and improved concepts of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A detection system for a plastic shell of a battery, comprising a placement frame (1), characterized in that: The placement frame (1) is used to place a plastic shell of a battery inside, and an impact device (2) is installed on the upper end of the placement frame (1), and the impact device (2) impacts the plastic shell of the battery; A plurality of detection components (3) are installed inside the placement frame (1), and the detection components (3) support and position the outer wall of the plastic shell. The inner wall of the placement frame (1) is provided with a plurality of movable grooves (101). The detection components (3) include a movable rod (301) slidably installed inside the movable groove (101), and a baffle (302) is fixedly installed at one end of the movable rod (301) away from the movable groove (101), and the baffle (302) contacts the plastic shell of the storage battery. A compression spring (303) is fixedly installed at one end of the movable rod (301) located inside the movable groove (101); An electronic ruler (102) is fixedly mounted at positions corresponding to the inner wall of the placement frame (1) and the moving rod (301), and an end of the electronic ruler (102) is fixedly connected to a side of the moving rod (301) located inside the moving groove (101).

2. A battery plastic shell detection system according to claim 1, characterized in that: A plurality of movable grooves (304) are formed at the lower end of the movable rod (301), and a plurality of limiting rods (305) for limiting positions are slidably mounted on the movable groove (304). The lower end of the limiting rod (305) on one side close to the movable groove (101) is in an inclined structure.

3. A battery plastic shell detection system according to claim 2, characterized in that: A tension spring (306) is fixedly mounted on the upper end of the limiting rod (305), and the upper end of the tension spring (306) is fixedly connected to the upper end of the inner wall of the movable groove (304), so that the tension spring (306) presses the limiting rod (305).

4. A battery plastic shell detection system according to claim 3, characterized in that: A vent groove (307) is provided inside the movable rod (301), and the vent groove (307) is connected to the inside of the plurality of movable grooves (304). A piston groove (308) is provided inside the movable rod (301) on a side away from the movable groove (101). A piston plate (309) is slidably mounted inside the piston groove (308), and the piston plate (309) squeezes the air inside the piston groove (308). A push rod (310) is fixedly mounted on one end of the piston plate (309) away from the movable groove (101), and the push rod (310) squeezes the outer wall of the plastic shell of the storage battery.

5. A battery plastic shell detection system according to claim 4, characterized in that: A clamping groove (103) is provided at a position corresponding to the limit rod (305) at the lower end of the movable groove (101), and a clamping block (104) is slidably mounted inside the clamping groove (103). The upper end of the clamping block (104) on a side away from the compression spring (303) is in an inclined structure, and the inclined portion of the clamping block (104) is in compression contact with the inclined portion of the limit rod (305). A support spring (105) is fixedly mounted at the lower end of the clamping block (104), and the support spring (105) compresses the clamping block (104).

6. A battery plastic shell detection system according to claim 5, characterized in that: A plurality of image acquisition modules (106) are installed inside the placement frame (1), and the image acquisition modules (106) acquire images of the outer wall of the plastic shell of the storage battery. The upper side and the lower side of each moving rod (301) are both installed with an image acquisition module (106).

7. A battery plastic shell detection system according to claim 6, characterized in that: The outer wall of the placement frame (1) is installed with a data processing module (107). The image acquisition module (106) transmits the acquired image information to the data processing module (107). A target detection model (Faster R-CNN, YOLOv5, SSD) is trained to identify cracks on the image. The data processing module (107) compares the image with an existing complete battery plastic shell image through the target detection model to determine whether there are cracks on the surface of the battery plastic shell after impact.

8. A battery plastic shell detection system according to claim 7, characterized in that: A calculation module (108) is fixedly mounted on the outer wall of the placement frame (1), the electronic ruler (102) transmits the collected data to the calculation module (108), and the calculation module (108) calculates the deformation degree and recovery degree of the battery plastic shell; An evaluation module (109) and an alarm module (110) are fixedly mounted on the outer wall of the placement frame (1); the calculation module (108) transmits calculated data to the evaluation module (109); the evaluation module (109) evaluates the integrity of the battery plastic shell; when the battery plastic shell is evaluated as unqualified, a signal is transmitted to the alarm module (110), and an alarm is issued through the alarm module (110); the data processing module (107) transmits processed data to the evaluation module (109); when cracks are detected on the battery plastic shell, the battery plastic shell is determined to be an unqualified product, and a signal is transmitted to the alarm module (110), and an alarm is issued through the alarm module (110).

9. A battery plastic shell detection system according to claim 8, characterized in that: The calculation module (108) calculates the maximum deformation degree of the battery plastic shell by using the following formula: ； in, is the maximum deformation degree of the battery plastic shell, is the value of the electronic ruler (102) when the plastic shell of the battery is stretched to its longest length when it is impacted. The value on the electronic ruler (102) when the battery plastic shell is placed in the placement frame (1) and the inner rear baffle (302) is in contact with the outer wall of the battery plastic shell; The calculation module (108) calculates the degree of recovery of the battery plastic shell after being impacted by the following formula: ； in, It is the recovery degree of the battery plastic shell after being impacted. The value of the electronic ruler (102) when the plastic shell of the battery no longer deforms after being impacted is stable. It is the value on the electronic ruler (102) when the battery plastic shell is placed in the placement frame (1) and the inner rear baffle (302) is in contact with the outer wall of the battery plastic shell.

10. A battery plastic shell detection system according to claim 9, characterized in that: The evaluation module (109) determines whether the plastic housing of the battery is damaged according to the calculation module (108); when When it is greater than the specified standard data, it indicates that the plastic shell of the battery is damaged, thereby controlling the alarm module (110) to sound an alarm; when When the value is less than the specified standard data, it means that the plastic shell of the battery is not damaged, and the alarm module (110) will not be controlled to alarm; when When it is less than the specified standard data, it means that the plastic shell of the battery is damaged, so the alarm module (110) is controlled to alarm.

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