Dry Cell Seal Strength Test System

Abstract

The present invention discloses a dry cell sealing strength testing system, which solves the problem that the existing dry cell sealing strength cannot be tested, and includes a compressed air generating device, a battery punching device, a battery sealing strength detection fixture, a gas-liquid conversion device, a hydraulic water delivery pipeline, a punching compressed air delivery pipeline, and a test compressed air delivery pipeline; the battery punching device is connected to the compressed air generating device through the punching compressed air delivery pipeline; the gas-liquid conversion device is connected to the compressed air generating device through the test compressed air delivery pipeline; the test compressed air delivery pipeline has an air regulating valve; the gas-liquid conversion device is connected to a water storage device through a water pipe, and is connected to the battery sealing strength detection fixture through a hydraulic water delivery pipeline; the hydraulic water delivery pipeline has a flow meter. The present invention can monitor the sealing strength value of the produced battery, thereby ensuring that the battery sealing strength value is within the explosion safety factor range, and ensuring that the battery does not have safety hazards.

Description

Technical Field

[0001] The present invention relates to a testing system, and more particularly to a dry cell sealing strength testing system. Background Art

[0002] With the diversification of electrical appliances, dry batteries have become a necessity in people's lives. At the same time, people have put forward higher requirements for the battery's anti-leakage performance and anti-explosion safety performance indicators, especially the battery safety performance in the case of over-discharge and battery misuse. Batteries will produce a large amount of gas when they are over-discharged or misused. A large amount of gas may cause battery leakage or even explosion. In order to solve the safety hazard of battery explosion, the safety factor value of the battery sealing strength compared with the rupture strength of the sealing ring safety valve is considered when designing the battery. The safety factor value of the LR6 battery is 1.3, and the safety factor value of the LR03 battery is 1.5. However, after the battery is manufactured, how to truly reflect the sealing strength of the battery is a technical problem existing in the prior art.

[0003] All companies hope to design and manufacture a device that can quickly test the battery sealing strength and monitor whether the battery sealing strength of each batch meets the safety factor of the battery design. Summary of the invention

[0004] In view of the shortcomings of the prior art, the present invention provides a dry cell sealing strength testing system, which can monitor the sealing strength value of the produced battery, thereby ensuring that the battery sealing strength value is within the explosion safety factor range, thereby ensuring that the battery has no safety hazards.

[0005] To achieve the above object, the present invention provides the following technical solutions:

[0006] A dry cell sealing strength testing system comprises a compressed air generating device, a battery punching device, a battery sealing strength testing fixture, a gas-liquid conversion device, a hydraulic water delivery pipeline, a punching compressed air delivery pipeline and a testing compressed air delivery pipeline; the battery punching device is connected to the compressed air generating device through the punching compressed air delivery pipeline to receive the compressed air from the compressed air generating device; the gas-liquid conversion device is connected to the compressed air generating device through the testing compressed air delivery pipeline to receive the compressed air from the compressed air generating device; the testing compressed air delivery pipeline has an air regulating valve to adjust the flow of compressed air entering the gas-liquid conversion device; the gas-liquid conversion device is connected to a water storage device through a water pipe, and is connected to a battery sealing strength testing fixture through a hydraulic water delivery pipeline to provide hydraulic testing water to the battery sealing strength testing fixture; the hydraulic water delivery pipeline has a flow meter to detect the flow of hydraulic testing water.

[0007] Preferably, the battery sealing strength detection fixture includes a base and a push rod, the base has a battery fixing detection hole and a water inlet hole connected to the battery fixing detection hole, the push rod is arranged in the battery fixing detection hole and can move axially along the battery fixing detection hole, and the water inlet hole is connected to the hydraulic water delivery pipeline.

[0008] Preferably, there are multiple battery sealing strength testing fixtures, and the diameter of the battery fixing detection hole of each battery sealing strength testing fixture is different; the hydraulic water delivery pipeline has a reversing valve to control the hydraulic detection water to flow to each battery sealing strength testing fixture.

[0009] Preferably, the compressed air generating device comprises an air compressor and an air storage tank, the air compressor is connected to the air storage tank through an air pipe, and the air storage tank is provided with an air inlet valve, an air outlet valve, an air storage tank regulating valve and a pressure display gauge.

[0010] Preferably, the battery punching device comprises a bracket, a battery positioning block, a cylinder and a punch; the cylinder and the battery positioning block are located on the bracket, the punch is connected to the push rod of the cylinder, and corresponds to the battery positioning block up and down; the punching compressed air delivery pipeline has a two-position five-way valve, and the cylinder is connected to the two-position five-way valve.

[0011] Preferably, the gas-liquid conversion device includes a barrel body and a piston rod axially movably engaged in the barrel body, the piston rod includes a rod body and two isolation plates formed on the rod body, the two isolation plates divide the inner part of the barrel body into a water chamber, an air chamber one and an air chamber two, the water chamber has a water inlet hole connected to a water storage device and a water outlet hole connected to a hydraulic water delivery pipeline, and the air chamber one and the air chamber two both have air holes for connecting to a test compressed air delivery pipeline.

[0012] Preferably, the punching compressed air delivery pipeline, the test compressed air delivery pipeline and the hydraulic water delivery pipeline all have switch valves.

[0013] The advantages of the present invention are: the sealing strength value of the produced battery can be monitored, so as to ensure that the sealing strength value of the battery is within the explosion safety factor range, thereby ensuring that the battery has no safety hazards. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 A schematic diagram of a dry cell seal strength testing system provided in this embodiment;

[0015] Figure 2 A cross-sectional view of a battery sealing strength testing fixture provided in this embodiment;

[0016] Figure 3 A cross-sectional view of the gas-liquid conversion device provided in this embodiment;

[0017] Figure 4 This is a schematic diagram of the battery punching device provided in this embodiment. DETAILED DESCRIPTION

[0018] pass Figures 1 to 4 The dry cell sealing strength testing system of the present invention is further described.

[0019] A dry cell sealing strength testing system includes a compressed air generating device 20, a battery punching device 50, a battery sealing strength testing fixture 60, a gas-liquid conversion device 70, a hydraulic water delivery pipeline 50, a punching compressed air delivery pipeline 30 and a testing compressed air delivery pipeline 40.

[0020] The battery punching device 50 is connected to the compressed air generating device 20 through the punching compressed air delivery pipeline 30 to receive the compressed air from the compressed air generating device 20 and realize the punching operation on the battery. The gas-liquid conversion device 70 is connected to the compressed air generating device 20 through the test compressed air delivery pipeline 40 to receive the compressed air from the compressed air generating device 20. The test compressed air delivery pipeline 40 has an air regulating valve 42 to adjust the flow of compressed air entering the gas-liquid conversion device 70; the gas-liquid conversion device 70 is connected to a water storage device through a water pipe, which is a water storage barrel, and is connected to the battery sealing strength testing fixture 60 through a hydraulic water delivery pipeline 50 to provide hydraulic testing water to the battery sealing strength testing fixture 60; the hydraulic water delivery pipeline 50 has a flow meter 52 to detect the flow of hydraulic testing water.

[0021] Furthermore, the battery sealing strength detection fixture 60 includes a base 62 and a push rod 61, the base 61 is provided with a battery fixing detection hole 621 and a water inlet hole 622 connected to the battery fixing detection hole 621, the inner wall of the battery fixing detection hole 621 is provided with an upper sealing ring 63 and a lower sealing ring 64, and a battery sealing cavity 6211 is formed between the upper sealing ring and the lower sealing ring, the battery sealing cavity can seal the battery placed in the battery sealing strength detection hole, and when the battery is punched and placed in the battery sealing strength detection hole, the hydraulic detection water entering from the water inlet hole can enter the hole of the battery, and have a water filling effect on the inside of the battery, the push rod is arranged in the battery fixing detection hole, and can move along the axial direction of the battery fixing detection hole, after moving downward, the battery that has completed the detection can be pushed out of the battery fixing detection hole, and the water inlet hole is connected to the hydraulic water delivery pipeline 50.

[0022] Furthermore, there are multiple battery sealing strength detection fixtures 60, and the diameter of the battery fixing detection hole of each battery sealing strength detection fixture 60 is different. In this embodiment, there are two battery sealing strength detection fixtures 60, which are used to detect LR6 batteries and LR03 batteries respectively; the hydraulic water delivery pipeline 50 has a main pipe, two branch pipes and a reversing valve 53, and the two branch pipes are connected to the main pipe through the reversing valve 53. At the same time, the other ends of the two branch pipes are respectively connected to the two battery sealing strength detection fixtures 60 to control the hydraulic detection water to flow to different battery sealing strength detection fixtures 60, so as to realize the detection of batteries of different models, thereby improving the flexibility of the use of the present invention.

[0023] Furthermore, the compressed air generating device includes an air compressor 21 and an air tank 22, the air compressor is connected to the air tank 22 through an air pipe, and the air tank 22 is provided with an air inlet valve 221, an air outlet valve 224, an air tank regulating valve 223 and a pressure display gauge 221.

[0024] Furthermore, the battery punching device 50 includes a bracket 51, a battery positioning block 54, a cylinder 52 and a punch 53; the battery positioning block is provided with a transverse positioning hole 541 and a vertical entry hole connected to the transverse positioning hole, the cylinder and the battery positioning block are located on the bracket, the punch is connected to the push rod of the cylinder, and corresponds to the battery positioning block up and down, the punch enters the positioning hole through the vertical entry hole; the punching compressed air delivery pipeline 30 has a two-position five-way valve 32, and the cylinder is connected to the two-position five-way valve 32.

[0025] Furthermore, the gas-liquid conversion device 70 includes a barrel body 75 and a piston rod 74 axially movable and fitted in the barrel body, the piston rod 74 includes a rod body 742 and two isolation plates 741 formed on the rod body 742, the two isolation plates 741 divide the barrel body into a water chamber 71, an air chamber 1 72 and an air chamber 2 73, the water chamber 71 has a water inlet hole connected to the water storage device and a water outlet hole connected to the hydraulic water delivery pipeline 50, and the air chamber 1 72 and the air chamber 2 73 both have air holes for connecting the test compressed air delivery pipeline. When in use, the compressed air generating device provides compressed air to the air chamber 1 72 or the air chamber 2 73 through the test compressed air delivery pipeline 40 to drive the piston rod 74 to move in the barrel body to realize the pumping and water discharge functions of the water chamber 71. In this embodiment, the principle of the test compressed air delivery pipeline 40 supplying air to the air chamber 1 72 or the air chamber 2 73 is the same as the control air circuit principle of the cylinder extension in the prior art.

[0026] Furthermore, the punching compressed air delivery pipeline 30 , the test compressed air delivery pipeline 40 and the hydraulic water delivery pipeline 50 all have switch valves to control the opening and closing of the punching compressed air delivery pipeline 30 , the test compressed air delivery pipeline 40 and the hydraulic water delivery pipeline 50 .

[0027] Furthermore, a mounting frame 10 is included, and the battery sealing strength detection fixture 60, the hydraulic water delivery pipeline 50 and the detection compressed air pipeline are all installed on the mounting frame 10 for easy operation.

[0028] In summary, the battery seal strength testing process is as follows:

[0029] 1. Open the air inlet valve 221 on the air storage tank 22, close the regulating valve 223, and then start the air compressor 21. The air storage tank 22 stores air. When the pressure display gauge 221 on the air storage tank 22 shows a pressure value of 15-18 MPa, close the air inlet valve 221 and the air compressor 21. In this embodiment, when the pressure in the air storage tank 22 is too high, adjust the air storage tank regulating valve 223. When the pressure display gauge on the air storage tank 22 shows a pressure value of 15-18 MPa, stop adjusting.

[0030] 2. Taking the test of LR6 battery as an example, put the LR6 battery into the horizontal positioning hole 541, first close the switch valve 41 on the test compressed air delivery pipeline 40, then open the outlet valve 224 of the air tank 22 and the switch valve 31 on the punching compressed air delivery pipeline 30, and send the compressed air in the air tank 22 to the cylinder through the two-position material valve 32, and turn the switch of the two-position five-way valve to push the cylinder to move downward to punch the battery; when the battery is punched, the switch of the two-position five-way valve is reversed, the cylinder moves upward to the top, and the punched battery is taken out for standby use.

[0031] 3. After the battery is punched, open the switch valve 41 of the test compressed air delivery pipeline 40, close the switch valve 31 of the punching compressed air delivery pipeline 30, and adjust to the battery sealing strength detection fixture 60 for testing the LR6 battery through the reversing valve 53, and then put the punched LR6 battery head upward into the battery fixing detection hole 621, and then inflate the air chamber 1 72 in the gas-liquid conversion device 70, control the piston rod 74 to move downward, form a negative pressure in the water chamber 71, and pump water from the water storage device. A one-way valve is provided on the water pipe between the water chamber 71 and the water storage device; after the water in the water chamber 71 is pumped to a certain amount, open the switch valve 51 on the hydraulic water delivery pipeline 50, and the valve 52 on the air chamber 2 is opened. 73 is inflated, so that the piston rod 74 moves upward, and the battery to be tested 80 fixed in the battery fixed detection hole is filled with water, that is, the water is filled in the hole punched in the battery, and the flow rate of water filling is adjusted by the air regulating valve 42, that is, the larger the compressed air flow rate, the larger the water filling flow rate. When the internal pressure of the battery is greater than the battery sealing strength pressure, the battery sealing part is disengaged, and the pressure value when the battery sealing part is disengaged is displayed by the flow meter 52, and the pressure value displayed by the flow meter 52 is the battery sealing strength value; after the sealing strength test is completed, the hydraulic water delivery pipeline 50 is closed, and finally the pressure relief valve set on the test compressed air delivery pipeline 40 is opened to discharge the air pressure in the gas-liquid conversion device 70. If the sealing strength of the LR03 battery is tested, just adjust the conversion valve 42 to the battery sealing strength detection fixture 60 for testing the LR03 battery, and the rest of the steps are the same. In addition, to test the sealing strength value of batteries other than LR6 and LR03 batteries, it is only necessary to design and process the battery sealing strength detection device according to the size of the battery outer diameter, which has high flexibility in use.

[0032] The above is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above embodiments. All technical solutions under the concept of the present invention belong to the protection scope of the present invention. It should be pointed out that for ordinary technicians in this technical field, some improvements and modifications without departing from the principle of the present invention should also be regarded as the protection scope of the present invention.

Claims

1. A dry cell seal strength testing system, characterized by: It includes a compressed air generating device, a battery punching device, a battery sealing strength testing fixture, a gas-liquid conversion device, a hydraulic water delivery pipeline, a punching compressed air delivery pipeline and a testing compressed air delivery pipeline; the battery punching device is connected to the compressed air generating device through the punching compressed air delivery pipeline to receive the compressed air from the compressed air generating device; The gas-liquid conversion device is connected to the compressed air generating device through a test compressed air delivery pipeline to receive compressed air from the compressed air generating device; The test compressed air delivery pipeline has an air regulating valve to adjust the flow rate of compressed air entering the gas-liquid conversion device; the gas-liquid conversion device is connected to a water storage device through a water pipe, and is connected to the battery sealing strength detection fixture through a hydraulic water delivery pipeline to provide hydraulic test water to the battery sealing strength detection fixture; the hydraulic water delivery pipeline has a flow meter to detect the flow rate of the hydraulic test water; The battery sealing strength detection fixture comprises a base and a push rod, the base is provided with a battery fixing detection hole and a water inlet hole connected with the battery fixing detection hole, the push rod is arranged in the battery fixing detection hole and can move along the axial direction of the battery fixing detection hole, the water inlet hole is connected with a hydraulic water delivery pipeline, the battery sealing strength detection fixture is provided with a plurality of battery sealing strength detection fixtures, and the diameter of the battery fixing detection hole of each battery sealing strength detection fixture is different; the hydraulic water delivery pipeline is provided with a reversing valve to control the hydraulic detection water to flow to each battery sealing strength detection fixture; The compressed air generating device comprises an air compressor and an air storage tank, wherein the air compressor is connected to the air storage tank through an air pipe, and the air storage tank is provided with an air inlet valve, an air outlet valve, an air storage tank regulating valve and a pressure display gauge; The battery punching device comprises a bracket, a battery positioning block, a cylinder and a punching drill; the cylinder and the battery positioning block are located on the bracket, the punching drill is connected to the push rod of the cylinder and corresponds to the battery positioning block up and down; the punching compressed air delivery pipeline has a two-position five-way valve, and the cylinder is connected to the two-position five-way valve; The gas-liquid conversion device includes a barrel body and a piston rod axially movable in the barrel body, the piston rod includes a rod body and two isolation plates formed on the rod body, the two isolation plates divide the inner part of the barrel body into a water chamber, an air chamber one and an air chamber two, the water chamber has a water inlet hole connected to a water storage device and a water outlet hole connected to a hydraulic water delivery pipeline, and the air chamber one and the air chamber two both have air holes for connecting to a test compressed air delivery pipeline.

2. The dry cell sealing strength testing system according to claim 1, characterized in that: The punching compressed air delivery pipeline, the testing compressed air delivery pipeline and the hydraulic water delivery pipeline all have switch valves.

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