Device and method for detecting sealing performance of cylindrical battery

Abstract

The invention discloses a device and method for detecting the sealing performance of a cylindrical battery, and relates to the technical field of new energy battery detection equipment.The device comprises a liquid storage tank and a battery body, the device further comprises two lenses, the front inner wall and the rear inner wall of the liquid storage tank are each provided with a mounting hole, and the lenses are arranged in the liquid storage tank; the lenses are fixedly mounted in the corresponding mounting holes; the fixing device comprises a fastener, a first sealing ring, a base, an air pipe joint, a third sealing ring, a fixing seat and a sealing cover, the battery main body is placed at the top of the fastener, the base is placed at the top of the battery main body, the base and the fastener are fixedly mounted, the left end of the air pipe joint is fixedly communicated with the right side of the base, and the right end of the air pipe joint is fixedly communicated with the fixing seat. The fixed seat is mounted at the top of the base, whether the battery leaks liquid or not can be effectively observed through generation of bubbles in water, the specific liquid leakage position can be seen, and subsequent liquid leakage analysis is improved in a targeted manner.

Description

Technical Field

[0001] The present invention relates to the technical field of new energy battery testing equipment, and in particular to a device and a method for testing the sealing of cylindrical batteries. Background Art

[0002] In the prior art, large cylindrical batteries frequently leak, customer complaints continue to increase, and safety risks are extremely high; there is a lack of effective means to detect whether there is leakage. The VOC gas detectors commonly used in the market are affected by the residual electrolyte on the surface of the battery due to injection, and the detection results are seriously distorted, with a very high false positive rate; the daily punching and pressing methods are complicated and require personnel with high proficiency in operation, and are prone to miss the location of the leakage. In addition, the punching process is prone to safety accidents, and the conditions for large-scale battery testing are not met; the vacuum inversion and high-temperature charging and discharging methods are inefficient in detecting leakage, and the results are not credible. There is a risk of fire and explosion during the charging process of leaking batteries, and the feasibility is not high. In summary, there is a lack of means to detect the sealing of cylindrical batteries, and it is impossible to quickly and effectively detect the sealing of batteries. To this end, the present application proposes a cylindrical battery sealing detection device and a detection method to solve the above problems. Summary of the invention

[0003] The purpose of the present application is to provide a device and method for detecting the sealing of cylindrical batteries to solve the problems raised in the above-mentioned background technology.

[0004] To achieve the above-mentioned purpose, the present application provides the following technical solution: a device for detecting the sealing of a cylindrical battery, comprising a liquid storage tank and a battery body, and the cylindrical battery sealing device also comprises: There are two lenses, and mounting holes are provided on the front inner wall and the rear inner wall of the liquid storage tank, and the lenses are fixedly installed in the corresponding mounting holes; A fixing device, the fixing device comprising: a fastener, a first sealing ring, a base, an air pipe joint, a third sealing ring, a fixing seat and a sealing cover, the battery body is placed on the top of the fastener, the base is placed on the top of the battery body, and the base is fixedly installed with the fastener, the left end of the air pipe joint is fixedly connected to the right side of the base, the fixing seat is installed on the top of the base, and the third sealing ring is arranged between the base and the fixing seat, and the sealing cover is sleeved on the fixing seat and fixedly installed with the top of the base; The punching mechanism is arranged inside the base and is used to punch holes in the battery body.

[0005] Preferably, a first sealing ring is fixedly mounted on the bottom of the base, and circular holes are provided on the base and the fixing seat, and the first sealing ring corresponds to the circular holes.

[0006] Preferably, the punching mechanism includes a drill bit, a second sealing ring, a rotating shaft, a spring and a motor, a mounting groove is opened on the top of the base, the motor is fixedly mounted inside the mounting groove, and the output shaft of the motor passes through the fixed seat and is fixedly mounted with a driving gear, the driving gear is meshed with the transmission gear, the top end of the rotating shaft is fixedly mounted on the bottom of the transmission gear, the rotating shaft is arranged in the circular hole, and the top end of the drill bit is fixedly mounted on the bottom end of the rotating shaft, the spring is sleeved on the rotating shaft, the top end of the spring is fixedly mounted on the bottom of the fixed seat, the second sealing ring is sleeved on the bottom end of the rotating shaft, and the second sealing ring is in contact with the inner wall of the circular hole on the base.

[0007] The present invention also proposes a method for detecting a cylindrical battery sealing device, comprising the following steps: S1: The battery body to be tested is placed on a fixing device and fixed; S2: Turn on the motor button to drive the drill to drill a hole with a depth of about 1-2mm; S3: Reverse the motor and the drill bit exits; S4: Turn on the gas cylinder switch, and the compressed gas enters the battery body through the gas pipe joint and the gas channel. Adjust the gas cylinder pressure knob to control the gas pressure; S5: Observe the leakage of the battery body through the lenses on both sides of the liquid storage tank; S6: After the test is completed, remove the battery body.

[0008] The beneficial effects of the present invention are: 1. The battery is placed inside the device for testing, which is safer and more efficient; 2. Through the generation of bubbles in the water, it is possible to effectively observe whether the battery is leaking, and the specific leakage location can be seen, so as to make targeted improvements to the subsequent leakage analysis; 3. The equipment is easy to operate and has low requirements for operators; 4. The equipment tooling is adjustable and can adapt to the leak detection needs of batteries with different diameters. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] Figure 1 It is a structural explosion diagram of an embodiment of the present application; Figure 2 A three-dimensional diagram of the structure of an embodiment of the present application; Figure 3 A schematic diagram of the internal structure of an embodiment of the present application; Figure 4 A top view of the structure of an embodiment of the present application; Figure 5 It is a structural cross-sectional view of an embodiment of the present application.

[0010] In the figure: 1. liquid storage tank; 2. lens; 3. fastener; 4. first sealing ring; 5. base; 6. trachea joint; 7. drill bit; 8. second sealing ring; 9. rotating shaft; 10. spring; 11. motor; 12. third sealing ring; 13. fixing seat; 14. transmission gear; 15. sealing cover; 16. battery body. DETAILED DESCRIPTION

[0011] The present invention will be further explained below in conjunction with specific embodiments.

[0012] refer to Figure 1-Figure 5 In this embodiment, a cylindrical battery sealing device is proposed, including a liquid storage tank 1 and a battery body 16. The cylindrical battery sealing device also includes: There are two lenses 2, and mounting holes are provided on the front inner wall and the rear inner wall of the liquid storage tank 1. The lenses 2 are fixedly installed in the corresponding mounting holes; A fixing device, the fixing device includes: a fastener 3, a first sealing ring 4, a base 5, an air pipe joint 6, a third sealing ring 12, a fixing seat 13 and a sealing cover 15, the battery body 16 is placed on the top of the fastener 3, the base 5 is placed on the top of the battery body 16, and the base 5 is fixedly installed with the fastener 3, the left end of the air pipe joint 6 is fixedly connected to the right side of the base 5, the fixing seat 13 is installed on the top of the base 5, and the third sealing ring 12 is arranged between the base 5 and the fixing seat 13, and the sealing cover 15 is sleeved on the fixing seat 13 and fixedly installed with the top of the base 5; The punching mechanism is arranged inside the base 5 and is used to punch holes in the battery body 16 .

[0013] In this embodiment, a first sealing ring 4 is fixedly mounted on the bottom of the base 5 , and circular holes are formed on the base 5 and the fixing seat 13 , and the first sealing ring 4 corresponds to the circular holes.

[0014] In this embodiment, the punching mechanism includes a drill bit 7, a second sealing ring 8, a rotating shaft 9, a spring 10 and a motor 11. A mounting groove is provided at the top of the base 5. The motor 11 is fixedly installed inside the mounting groove, and the output shaft of the motor 11 passes through the fixed seat 13 and is fixedly installed with a driving gear. The driving gear is meshed with the transmission gear 14. The top of the rotating shaft 9 is fixedly installed at the bottom of the transmission gear 14. The rotating shaft 9 is arranged in the circular hole, and the top of the drill bit 7 is fixedly installed at the bottom end of the rotating shaft 9. The spring 10 is sleeved on the rotating shaft 9, and the top end of the spring 10 is fixedly installed with the bottom of the fixed seat 13. The second sealing ring 8 is sleeved on the bottom end of the rotating shaft 9, and the second sealing ring 8 contacts the inner wall of the circular hole on the base 5.

[0015] In this embodiment, the battery body 16 is a cylindrical battery.

[0016] In this embodiment, the liquid in the liquid storage tank 1 is composed of deionized water and anti-rust liquid, which needs to be replaced periodically.

[0017] The present invention also proposes a method for detecting a cylindrical battery sealing device, comprising the following steps: S1: The battery body 16 to be tested is placed on a fixing device and fixed; S2: Turn on the button of the motor 11 to drive the drill bit 7 to make a hole with a depth of about 1-2 mm; S3: Reverse the motor 11, and the drill bit 7 exits; S4: Turn on the gas cylinder switch, and the compressed gas enters the battery body 16 through the gas pipe joint 6 and the gas channel, and adjust the gas cylinder pressure knob to control the gas pressure; S5: Observe the leakage of the battery body 16 through the lenses 2 on both sides of the liquid storage tank 1; S6: After the test is completed, the battery body 16 is removed.

[0018] Working principle: When in use, first place the battery body 16 to be tested on the fixing device and fix it, turn on the button of the motor 11 to drive the drill bit 7 to drill a hole in the battery body 16, the hole is about 1-2mm deep, reverse the motor 11, and the drill bit 7 withdraws; turn on the gas cylinder switch, and the compressed gas enters the battery body 16 through the gas pipe joint 6 and the gas channel, adjust the gas cylinder pressure knob to control the gas pressure, and observe the leakage of the battery body 16 through the lenses 2 on both sides of the liquid storage tank 1 (the speed and position of bubble generation in the water represent the battery sealing), and finally take out the battery body 16 after completing the test.

[0019] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A device for detecting the sealing of a cylindrical battery, comprising a liquid storage tank (1) and a battery body (16), characterized in that: The cylindrical battery sealing device also includes: The lenses (2) are provided in two numbers, and mounting holes are provided on the front inner wall and the rear inner wall of the liquid storage tank (1), and the lenses (2) are fixedly mounted in the corresponding mounting holes; A fixing device, the fixing device comprising: a fastener (3), a first sealing ring (4), a base (5), an air pipe joint (6), a third sealing ring (12), a fixing seat (13) and a sealing cover (15), wherein the battery body (16) is placed on the top of the fastener (3), the base (5) is placed on the top of the battery body (16), and the base (5) and the fastener (3) are fixedly mounted, the left end of the air pipe joint (6) is fixedly connected to the right side of the base (5), the fixing seat (13) is mounted on the top of the base (5), and the third sealing ring (12) is arranged between the base (5) and the fixing seat (13), and the sealing cover (15) is sleeved on the fixing seat (13) and fixedly mounted to the top of the base (5); A punching mechanism, wherein the punching mechanism is arranged inside the base (5), and is used to punch holes in the battery body (16).

2. The device for detecting the sealing of cylindrical batteries according to claim 1, characterized in that: A first sealing ring (4) is fixedly mounted on the bottom of the base (5), and circular holes are provided on the base (5) and the fixing seat (13), and the first sealing ring (4) corresponds to the circular holes.

3. The device for detecting the sealing of cylindrical batteries according to claim 1, characterized in that: The punching mechanism comprises a drill bit (7), a second sealing ring (8), a rotating shaft (9), a spring (10) and a motor (11). The top of the base (5) is provided with a mounting groove. The motor (11) is fixedly mounted inside the mounting groove. The output shaft of the motor (11) passes through the fixing seat (13) and is fixedly mounted with a driving gear. The driving gear is meshed with a transmission gear (14). The top end of the rotating shaft (9) is fixedly mounted on the bottom end of the transmission gear (14). The rotating shaft (9) is arranged in the circular hole. The top end of the drill bit (7) is fixedly mounted on the bottom end of the rotating shaft (9). The spring (10) is sleeved on the rotating shaft (9). The top end of the spring (10) is fixedly mounted on the bottom end of the fixing seat (13). The second sealing ring (8) is sleeved on the bottom end of the rotating shaft (9). The second sealing ring (8) is in contact with the inner wall of the circular hole on the base (5).

4. A method for detecting a cylindrical battery sealing device, characterized in that: The following steps are involved: S1: The battery body (16) to be tested is placed on a fixing device and fixed; S2: Turn on the button of the motor (11) to drive the drill bit (7) to drill a hole with a depth of about 1-2 mm; S3: Reverse the motor (11) and the drill bit (7) is withdrawn; S4: Turn on the gas cylinder switch, and the compressed gas enters the battery body (16) through the gas pipe joint (6) and the gas channel, and adjust the gas cylinder pressure knob to control the gas pressure; S5: Observe the leakage of the battery body (16) through the lenses (2) on both sides of the liquid storage tank (1); S6: After the test is completed, the battery body (16) is removed.

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