Battery leakage detection equipment

Abstract

The present invention relates to the technical field of battery leakage detection, and specifically to a battery leakage detection device, which includes a workpiece base plate, an upper surface of a battery placement receiving platform is provided with 9 groups of battery detection cavities distributed in a nine-square grid pattern, and one end above the workpiece base plate is provided with a leakage detection component, the leakage detection component includes a receiving platform top cover, a lifting plate, two groups of main cylinders, an air intake joint, an air intake pipe, a one-way valve, a three-way pipe, an air exhaust joint, an air exhaust valve, and an intra-cavity gas exchange pipe, the lifting plate is installed above the receiving platform top cover, the air intake joint is fixed to the top of the lifting plate, an air intake channel corresponding to the position is opened between the receiving platform top cover and the lifting plate, the air intake pipe and the air intake joint are connected by means of the air intake channel, the one-way valve is fixed and connected to one end of the air intake pipe, the three-way pipe is fixed and connected to the other end of the one-way valve, the air exhaust valve is installed at one end of the three-way pipe, the intra-cavity gas exchange pipe is fixed and connected to the other end of the three-way valve, and the intra-cavity gas exchange pipe is embedded in the receiving platform top cover.

Description

Technical Field

[0001] The present invention relates to the technical field of battery leakage detection, and in particular to a battery leakage detection device. Background Art

[0002] A battery, a cup, tank, or other container or part of a composite container that holds an electrolyte solution and metal electrodes to generate an electric current, is a device that converts chemical energy into electrical energy. After packaging, batteries often require leakage testing. If the battery has a sealing problem, the electrolyte inside can easily overflow. However, in previous battery leakage detection processes, it was not possible to detect leakage in multiple batteries at once. The slow detection rate seriously affected production efficiency. Detecting leakage in multiple batteries at the same time has become a key design and development challenge in the field of battery testing.

[0003] At present, a Chinese patent with publication number CN111504560B discloses a battery leakage detection device, which includes a carrying box, an exhaust assembly, an energizing assembly and a detection assembly. A carrying chamber is provided in the carrying box, and the carrying chamber is used to carry the battery to be tested. The exhaust assembly is used to vacuum the carrying chamber. The energizing assembly is arranged in the carrying chamber. The energizing assembly includes a driving member, a conductive member and a buffer member. The buffer member is arranged between the driving member and the conductive member. The driving member is used to drive the conductive member to move in a direction close to the battery to be tested so that the conductive member abuts against the conductive aluminum foil layer of the battery to be tested, and is used to energize the battery to be tested. The detection assembly is arranged in the carrying box, and the detection assembly is used to detect whether the battery to be tested is leaking.

[0004] Although this battery leakage detection device can prevent the conductive part from rigidly contacting the conductive aluminum foil layer of the battery, ensuring that the battery can be used normally after leakage detection, this device has the above-mentioned detection efficiency problem. The storage space of the carrying chamber is limited, and only one group of batteries can be placed for detection at a time. In order to match production efficiency, it is too expensive to equip an array of detection devices. Summary of the Invention

[0005] In view of the above situation, in order to overcome the defects of the prior art, the purpose of the present invention is to provide a battery leakage detection device, which is equipped with 9 groups of detection cavities, can perform leakage detection at the same time, and select different delivery methods for the batteries based on the detection results.

[0006] The above technical objectives of the present invention are achieved through the following technical solutions:

[0007] A battery leakage detection device,

[0008] Including workpiece base,

[0009] Guide rails are fixedly connected to both sides of the workpiece bottom plate, and a battery placement platform is provided on the guide rails and is slidably assembled with the guide rails. The upper surface of the battery placement platform is provided with 9 groups of battery detection cavities distributed in a nine-square grid pattern;

[0010] A leakage detection assembly is provided at one end above the bottom plate of the workpiece, and the leakage detection assembly includes a receiving platform top cover, a lifting plate, two sets of main cylinders, an air intake joint, an air intake pipe, a one-way valve, a three-way pipe, an air extraction joint, an air extraction valve, and an intracavity gas exchange pipe. The lifting plate is installed above the receiving platform top cover. In the initial state, the two are fitted together. The edge part of the bottom surface of the receiving platform top cover is structurally adapted to the edge part of the top surface of the receiving platform where the battery is placed. The two are fitted together to form an edge seal. The air intake joint is fixed on the top of the lifting plate. An air intake channel with corresponding position is opened between the platform top cover and the lifting plate, and the air intake pipe and the air intake joint are connected by means of the air intake channel. The one-way valve is fixed and connected to one end of the air intake pipe, and the three-way pipe is fixed and connected to the other end of the one-way valve. The air exhaust valve is installed at one end of the three-way pipe, and the two are connected by a pipeline. The intra-cavity gas exchange pipe is fixed and connected to the other end of the three-way valve. The intra-cavity gas exchange pipe is embedded in the interior of the receiving platform top cover, and this end is located at the lower bottom surface of the receiving platform top cover, with the opening facing the battery detection cavity.

[0011] Furthermore, a detection connector is fixedly connected to the side wall of the lifting plate, and the detection connector is located directly above the air intake pipe. One end of the detection connector extends into the interior of the lifting plate and is connected to the lifting plate and the air intake channel inside the top cover of the receiving platform.

[0012] Furthermore, a traction block is fixedly connected to the bottom of the battery placement platform, and driving components for controlling the movement of the battery placement platform are provided at both ends of the workpiece base plate. The driving component includes a traction belt, a main transmission box, an auxiliary transmission box, and a servo motor. The main transmission box and the auxiliary transmission box are respectively installed on both sides of the workpiece base plate. The traction belt is wound between the main transmission box and the auxiliary transmission box. The servo motor is installed on the main transmission box. The traction block is fixed to a part of the traction belt.

[0013] Furthermore, three groups of beamforming sensors are fixedly connected to both ends of the workpiece bottom plate at the initial position of the battery placement platform, and the detection positions of the beamforming sensors on both sides are misaligned.

[0014] Furthermore, clamping steps are provided on both sides of the receiving platform top cover, and two groups of clamping cylinders are fixedly connected to the top of the lifting plate. The installation positions of the two groups of clamping cylinders are respectively located on the outside of the two groups of main cylinders. A clamping block is fixedly connected to the bottom of the clamping cylinder, and the structure of the clamping block protrudes and extends inward, and this extension section is pressed against the clamping step position of the receiving platform top cover.

[0015] Furthermore, four fixed columns are fixedly connected to the top of the workpiece base plate, the top of the fixed columns is fixedly connected to an upper support platform, the top of the upper support platform is fixedly connected to a guide sleeve, a positioning guide slide is provided inside the guide sleeve, the positioning guide slide is slidably assembled in the guide sleeve, and the lower end of the positioning guide slide is fixed to the lifting plate.

[0016] Furthermore, a group of movable grooves are provided on the surface of the upper support platform, and the movable grooves are located on the inner side of one of the main cylinders. The center position of the upper support platform is fixedly connected to the adjusting cylinder, and the telescopic end of the adjusting cylinder is fixedly connected to the adjusting vertical rod, and the adjusting vertical rod is installed inside the movable groove. The lower part of the adjusting vertical rod is fixedly connected to the adjusting cross rod, and the adjusting cross rod is distributed in the space between the upper support platform and the lifting plate. The two ends of the adjusting cross rod are fixedly connected to the upper support adaptation block, and the bottom surface of the upper support adaptation block is an inclined structure. The top of the lifting plate is fixedly connected to the lower support adaptation block, and the top surface of the lower support adaptation block is also an inclined structure, and the inclined surface fits the bottom surface structure of the upper support adaptation block.

[0017] In summary, the present invention has the following beneficial effects:

[0018] ① In the present invention, the battery receiving platform is provided with 9 groups of detection cavities. With the detection components in the device, 9 groups of batteries can be tested for leakage at the same time. If there is no leakage in a batch of batteries, all 9 groups of batteries will pass the test smoothly at the same time. If there is leakage in a batch of batteries, they will be tested separately, which greatly improves the detection efficiency.

[0019] ② In the detection assembly of the present invention, different treatment methods can be selected for the battery batch according to different detection results. When the battery leaks, the battery is placed on the receiving platform and the receiving platform top cover is combined to maintain its own sealing to prevent electrolyte leakage;

[0020] ③ During the detection process of the present invention, the upper and lower supporting adaptive blocks cooperate with each other to provide a strong supporting structure and high safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of this application, but do not constitute an improper limitation of the present invention. In the drawings:

[0022] Figure 1 The squint of the overall structure of the present invention Figure 1 ;

[0023] Figure 2 The squint of the overall structure of the present invention Figure 2 ;

[0024] Figure 3It is a front view of the present invention;

[0025] Figure 4 This invention Figure 3 Cross-sectional view along the AA axis;

[0026] Figure 5 It is a left schematic diagram of the present invention;

[0027] Figure 6 This invention Figure 5 Cross-sectional view along the BB direction;

[0028] Figure 7 It is a right schematic diagram of the present invention;

[0029] Figure 8 This invention Figure 7 Cross-sectional view in CC direction;

[0030] Figure 9 It is a structural schematic diagram of the air intake channel in the present invention.

[0031] In the figure, 1, workpiece base plate; 2, guide rail; 3, battery placement platform; 4, battery detection cavity; 501, platform top cover; 502, lifting plate; 503, main cylinder; 504, air inlet connector; 505, air inlet pipe; 506, one-way valve; 507, three-way pipe; 508, air extraction connector; 509, air extraction valve; 510, intracavity gas exchange tube; 6, detection connector; 7, traction block; 801, traction belt; 802. Main transmission box; 803. Auxiliary transmission box; 804. Servo motor; 9. Through-beam sensor; 10. Clamping step; 11. Clamping cylinder; 12. Clamping block; 13. Fixed column; 14. Upper support platform; 15. Guide sleeve; 16. Positioning guide slide column; 17. Movable slot; 18. Adjusting cylinder; 19. Adjusting vertical rod; 20. Adjusting horizontal rod; 21. Upper support adaptation block; 22. Lower support adaptation block. DETAILED DESCRIPTION

[0032] The above and other technical contents, features and effects of the present invention are described below with reference to the attached Figure 1 To the attached Figure 9 The detailed description of the embodiments will clearly show that the structural contents mentioned in the following embodiments are all based on the accompanying drawings.

[0033] Various exemplary embodiments of the present invention will be described below with reference to the accompanying drawings.

[0034] Example 1: A battery leakage detection device includes a workpiece base plate 1, with guide rails 2 fixedly connected on both sides above the workpiece base plate 1, a battery placement platform 3 slidably assembled with the guide rails 2 is provided on the guide rails 2, and the upper surface of the battery placement platform 3 is provided with 9 groups of battery detection cavities 4 distributed in a nine-square grid pattern. The battery placement platform 3 can be used to simultaneously detect whether there is leakage in 9 groups of batteries.

[0035] The bottom of the battery placement platform 3 is fixedly connected with a traction block 7, and both ends of the workpiece base plate 1 are provided with a driving component that controls and drives the movement of the battery placement platform 3. The driving component includes a traction belt 801, a main transmission box 802, an auxiliary transmission box 803, and a servo motor 804. The main transmission box 802 and the auxiliary transmission box 803 are respectively installed on both sides of the workpiece base plate 1. The traction belt 801 is wound between the main transmission box 802 and the auxiliary transmission box 803. There are two groups of servo motors 804, which are respectively installed on both sides of the active box. The traction block 7 is fixed to a part of the traction belt 801. When the servo motor 804 is started, it can drive the traction belt 801 to rotate continuously. Since the traction block 7 is fixed to the traction belt 801, the forward and reverse rotation of the traction belt 801 will determine the moving direction of the battery placement platform 3.

[0036] Three groups of through-beam sensors 9 are fixedly connected to the two ends of the initial position of the battery placement platform 3 above the workpiece base plate 1. The detection positions of the through-beam sensors 9 on both sides are misaligned. The detection positions of the through-beam sensors 9 are facing the 9 groups of battery detection cavities 4. If it is detected that a battery has been placed in the battery detection cavity 4, the battery placement platform 3 needs to be transported forward.

[0037] A leakage detection assembly is provided at one end above the workpiece base plate 1, which includes a receiving platform top cover 501, a lifting plate 502, two sets of main cylinders 503, an air intake connector 504, an air intake pipe 505, a one-way valve 506, a three-way pipe 507, an air exhaust connector 508, an air exhaust valve 509, and an intracavity gas exchange tube 510. Four fixed columns 13 are fixedly connected to the top of the workpiece base plate 1, and the top of the fixed column 13 is fixedly connected to an upper support platform 14. The top of the upper support platform 14 is fixedly connected to a guide sleeve 15. A positioning guide slide 16 is provided inside the guide sleeve 15. The positioning guide slide 16 is slidably assembled in the guide sleeve 15, and the lower end of the positioning guide slide 16 is fixed to the lifting plate 502.

[0038] The lifting plate 502 is installed above the receiving platform top cover 501. The edge portion of the bottom surface of the receiving platform top cover 501 is structurally adapted to the edge portion of the top surface of the battery receiving platform 3. The two are fitted together to form an edge seal.

[0039] In the initial state, the lifting plate 502 and the receiving platform top cover 501 are installed in close contact with each other, and clamping steps 10 are provided on both sides of the receiving platform top cover 501. Two groups of clamping cylinders 11 are fixedly connected to the top of the lifting plate 502. The installation positions of the two groups of clamping cylinders 11 are respectively located on the outside of the two groups of main cylinders 503. A clamping block 12 is fixedly connected to the bottom of the clamping cylinder 11. The structure of the clamping block 12 protrudes and extends inward, and this extended section is pressed against the clamping step 10 position of the receiving platform top cover 501.

[0040] The air inlet connector 504 is fixed to the top of the lifting plate 502, and an air inlet channel of corresponding position is opened between the receiving platform top cover 501 and the lifting plate 502. The air inlet pipe 505 is connected to the air inlet connector 504 through the air inlet channel. The one-way valve 506 is fixed and connected to one end of the air inlet pipe 505, and the three-way pipe 507 is fixed and connected to the other end of the one-way valve 506. The air exhaust valve 509 is installed at one end of the three-way pipe 507, and the two are connected by a pipeline. The intra-cavity gas exchange pipe 510 is fixed and connected to the other end of the three-way valve. The intra-cavity gas exchange pipe 510 is embedded in the receiving platform top cover 501, and this end is located at the lower bottom surface of the receiving platform top cover 501, and the opening faces the battery detection cavity 4.

[0041] A detection connector 6 is fixedly connected to the side wall of the lifting plate 502. The detection connector 6 is located directly above the air inlet pipe 505. One end of the detection connector 6 extends into the interior of the lifting plate 502 and is connected to the lifting plate 502 and the air inlet channel inside the receiving platform top cover 501. The position of the detection connector 6 is used for detection units such as an external pressure gauge, which can be used to detect the gas pressure at the inlet end.

[0042] A group of movable grooves 17 are provided on the surface of the upper support platform 14, and the movable grooves 17 are located on the inner side of one group of main cylinders 503. The center position of the upper support platform 14 is fixedly connected to an adjusting cylinder 18, and the telescopic end of the adjusting cylinder 18 is fixedly connected to an adjusting vertical rod 19, which is installed inside the movable groove 17. An adjusting cross rod 20 is fixedly connected below the adjusting vertical rod 19. The adjusting cross rod 20 is distributed in the space between the upper support platform 14 and the lifting plate 502. The two ends of the adjusting cross rod 20 are fixedly connected to an upper support adaptation block 21. The bottom surface of the upper support adaptation block 21 is a slope structure. The top of the lifting plate 502 is fixedly connected to a lower support adaptation block 22. The top surface of the lower support adaptation block 22 is also a slope structure, and the slope fits the bottom surface structure of the upper support adaptation block 21.

[0043] Testing process:

[0044] 9 groups of batteries to be tested are placed into 9 battery testing cavities 4 in turn. At this time, the shooting sensor 9 detects the presence of objects to be tested inside the battery testing cavity 4, and the servo motor 804 starts working, driving the traction belt 801 to start rotating. When the traction belt 801 rotates, it drives the battery placement platform 3 to move through the traction block 7 until the battery placement platform 3 moves to the bottom of the leakage detection component. At this time, the battery placement platform 3 is located directly below the platform top cover 501.

[0045] In this initial state, the clamping cylinder 11 is in a retracted state, and the clamping block 12 is pressed against the clamping step 10, ensuring that the lifting plate 502 and the receiving platform top cover 501 keep moving synchronously. When the battery placement receiving platform 3 reaches the position, the main cylinders 503 on both sides start working at the same time, driving the lifting plate 502 and the receiving platform top cover 501 to descend through the positioning guide slide 16. While the lifting plate 502 and the receiving platform top cover 501 are descending, the adjusting cylinder 18 also needs to be retracted synchronously. The adjusting cylinder 18 drives the adjusting cross bar 20 to move by adjusting the vertical rod 19, so that the upper support adaptation block 21 gradually supports the lower support adaptation block 22, which is used to offset the upward support force of the battery placement receiving platform 3 on the receiving platform top cover 501.

[0046] When the top cover 501 of the receiving platform is tightly covered on the battery placement receiving platform 3, the edges of the two are sealed and fitted together. At this time, the exhaust valve 509 needs to be opened, and the gas in the battery detection cavity 4 is extracted through an external exhaust pump. All the gas in the battery detection cavity 4 is extracted from the gas exchange tube 510 in the cavity. Since one end of the three-way tube 507 is connected to the one-way valve 506, the gas can only be extracted from the odor joint position. When the gas inside the battery detection cavity 4 is gradually extracted, if the battery in the battery detection cavity 4 is leaking, the electrolyte will be extracted together with the gas inside the battery detection cavity 4.

[0047] When one test cannot ensure the final result, repeated tests are required. At this time, gas needs to be filled through the air inlet connector 504. The gas passes through the air inlet connector 504, the air inlet pipe 505, the one-way valve 506, the three-way pipe 507 in sequence, and finally enters the battery test cavity 4 from the intra-cavity gas exchange tube 510, so that the inside of the cavity is restored from the vacuum state to the normal state, and the vacuuming action of the previous step is performed again.

[0048] There are two results after the test:

[0049] ① After repeated tests, the extracted gas does not contain any electrolyte liquid, which means that there is no leakage in the 9 groups of batteries. At this time, the space between the battery receiving platform 3 and the receiving platform top cover 501 is restored to normal. The main cylinder 503 is used to drive the receiving platform top cover 501 and the lifting plate 502 to reset. Finally, the battery receiving platform 3 is sent out, and the 9 groups of batteries that have passed the test are taken out.

[0050] ② After repeated tests, the extracted gas is mixed with electrolyte liquid, which means that one or more batteries in the 9 groups of batteries are leaking. At this time, it is necessary to maintain the space between the battery placement platform 3 and the platform top cover 501 in a vacuum state, and the clamping cylinder 11 extends downward to make the clamping block 12 leave the clamping step 10. At this time, the platform top cover 501 is separated from the lifting plate 502 and leaves the inspection station together with the battery placement platform 3. The platform top cover 501 keeps the battery placement platform 3 in a closed state. The advantage of this is that if the battery leaks, the entire battery detection cavity 4 will be replaced, so there is no need to clean the original battery detection cavity 4, and it can also prevent the leaked electrolyte from overflowing.

[0051] The above is a further detailed description of the present invention in combination with specific implementation methods, and it cannot be determined that the specific implementation of the present invention is limited to this; for technical personnel in the technical fields to which the present invention belongs and related technical fields, based on the technical solution ideas of the present invention, the expansion and replacement of operating methods and data should all fall within the scope of protection of the present invention.

Claims

1. A battery leakage detection device, characterized in that: comprising a workpiece base plate (1), Guide rails (2) are fixedly connected to both sides above the workpiece base plate (1); a battery placement platform (3) is provided on the guide rails (2) and is slidably assembled with the guide rails (2); and nine groups of battery detection cavities (4) are provided on the upper surface of the battery placement platform (3) and are distributed in a nine-square grid pattern; A liquid leakage detection assembly is provided at one end above the workpiece bottom plate (1), and the liquid leakage detection assembly comprises a receiving platform top cover (501), a lifting plate (502), two sets of main cylinders (503), an air intake joint (504), an air intake pipe (505), a one-way valve (506), a three-way pipe (507), an air extraction joint (508), an air extraction valve (509), and an intracavity gas exchange pipe (510). The lifting plate (502) is installed above the receiving platform top cover (501). In the initial state, the two are installed in close contact with each other. The edge portion of the bottom surface of the receiving platform top cover (501) is structurally adapted to the edge portion of the top surface of the battery placement receiving platform (3). The two are in close contact with each other to form an edge seal. The air intake joint (504) is fixed to the top of the lifting plate (502). An air intake passage corresponding to the position is provided between the receiving platform top cover (501) and the lifting plate (502), the air intake pipe (505) and the air intake joint (504) are connected via the air intake passage, the one-way valve (506) is fixed to and connected to one end of the air intake pipe (505), the three-way pipe (507) is fixed to and connected to the other end of the one-way valve (506), the air extraction valve (509) is installed at one end of the three-way pipe (507), and the two are connected via a pipeline, the intracavity gas exchange pipe (510) is fixed to and connected to the other end of the three-way valve, the intracavity gas exchange pipe (510) is embedded in the receiving platform top cover (501), and the end is located at the lower bottom surface of the receiving platform top cover (501), with the opening facing the battery detection cavity (4).

2. The battery leakage detection device according to claim 1, characterized in that: A detection connector (6) is fixedly connected to the side wall of the lifting plate (502), and the detection connector (6) is located directly above the air inlet pipe (505). One end of the detection connector (6) extends into the interior of the lifting plate (502) and communicates with the lifting plate (502) and the air inlet passage inside the receiving platform top cover (501).

3. The battery leakage detection device according to claim 1, characterized in that: The bottom of the battery placement platform (3) is fixedly connected to a traction block (7), and both ends of the workpiece base plate (1) are provided with a driving assembly for controlling the movement of the battery placement platform (3), and the driving assembly includes a traction belt (801), a main transmission box (802), an auxiliary transmission box (803), and a servo motor (804). The main transmission box (802) and the auxiliary transmission box (803) are respectively installed at two sides of the workpiece base plate (1), the traction belt (801) is wound between the main transmission box (802) and the auxiliary transmission box (803), the servo motor (804) is installed on the main transmission box (802), and the traction block (7) is fixed to a part of the traction belt (801).

4. The battery leakage detection device according to claim 3, characterized in that: Three groups of beam sensors (9) are fixedly connected to both ends of the workpiece base plate (1) at the initial position of the battery placement platform (3), and the detection positions of the beam sensors (9) on both sides are misaligned.

5. The battery leakage detection device according to claim 1, characterized in that: Clamping steps (10) are provided on both sides of the receiving platform top cover (501), and two groups of clamping cylinders (11) are fixedly connected above the lifting plate (502). The installation positions of the two groups of clamping cylinders (11) are respectively located on the outsides of the two groups of main cylinders (503). A clamping block (12) is fixedly connected to the bottom of the clamping cylinder (11), and the structure of the clamping block (12) protrudes and extends inward, and this extension section is pressed against the clamping step (10) position of the receiving platform top cover (501).

6. The battery leakage detection device according to claim 1, characterized in that: Four fixed columns (13) are fixedly connected above the workpiece base plate (1), the top of the fixed columns (13) is fixedly connected to an upper support platform (14), the top of the upper support platform (14) is fixedly connected to a guide sleeve (15), a positioning guide slide (16) is provided inside the guide sleeve (15), the positioning guide slide (16) is slidably assembled in the guide sleeve (15), and the lower end of the positioning guide slide (16) is fixed to the lifting plate (502).

7. The battery leakage detection device according to claim 6, characterized in that: The surface of the upper support platform (14) is provided with a group of movable grooves (17), and the movable grooves (17) are located on the inner side of one group of main cylinders (503). The center position of the upper support platform (14) is fixedly connected to an adjusting cylinder (18), and the telescopic end of the adjusting cylinder (18) is fixedly connected to an adjusting vertical rod (19), and the adjusting vertical rod (19) is installed inside the movable groove (17). The lower part of the adjusting vertical rod (19) is fixedly connected to an adjusting cross rod (20), and the adjusting cross rod (20) is distributed in the space between the upper support platform (14) and the lifting plate (502). The two ends of the adjusting cross rod (20) are fixedly connected to an upper support adaptation block (21), and the bottom surface of the upper support adaptation block (21) is an inclined structure. The top of the lifting plate (502) is fixedly connected to a lower support adaptation block (22), and the top surface of the lower support adaptation block (22) is also an inclined structure, and the inclined surface matches the bottom surface structure of the upper support adaptation block (21).

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