A harmful gas absorbing device for a storage battery detection process

Abstract

The utility model provides a kind of harmful gas absorption device in battery detection process belongs to battery detection technical field, including sealing assembly and gas recovery assembly;Sealing assembly includes water bath and isolating cover, liquid is filled in water bath, the opening of isolating cover is covered in the upper of charging potential downward, and the lower end of isolating cover is below liquid level;Gas recovery assembly includes gas absorber and exhaust pipe;Gas absorber is located at one side of water bath, and reaction liquid is filled in gas absorber;One end of exhaust pipe is communicated with the inner chamber of isolating cover, and the other end of exhaust pipe extends to below liquid level in gas absorber.The utility model provides a kind of harmful gas absorption device in battery detection process, restricts the air release valve of battery in isolating cover, prevents acidic harmful gas overflow;Then utilize exhaust pipe to transport acidic harmful gas in isolating cover to gas absorber, to avoid its emission to environment, avoid the harm to staff body.

Description

Technical Field

[0001] This utility model belongs to the field of battery testing technology, and more specifically, it relates to a device for absorbing harmful gases during battery testing. Background Technology

[0002] Currently, the batteries used in the automotive industry, such as starter batteries and start-stop batteries, include lead-acid batteries, lithium-ion batteries, and sodium-ion batteries. Electrical performance testing is required during the battery production process.

[0003] When a lead-acid battery reaches the end of its charging process, the current causes the water in the electrolyte to undergo an electrolytic reaction, decomposing into hydrogen and oxygen. Simultaneously, the increased internal temperature during charging causes the sulfuric acid in the electrolyte to volatilize. This sulfuric acid vapor mixes with the decomposed hydrogen and oxygen to form acidic and harmful gases such as sulfur dioxide and sulfur trioxide.

[0004] In addition, lithium-ion and sodium-ion batteries also have the probability of thermal runaway during cycle life tests. When thermal runaway occurs, a large amount of flammable gas and acidic harmful gas will be generated.

[0005] Acidic and harmful gases generated during the electrical performance testing of batteries can be directly released into the environment, posing a health hazard to workers. Utility Model Content

[0006] The purpose of this invention is to provide a harmful gas absorption device for the battery testing process, which aims to absorb the acidic harmful gases produced by the battery and prevent the acidic harmful gases from being directly emitted into the environment.

[0007] To achieve the above objectives, the technical solution adopted by this utility model is: to provide a harmful gas absorption device for the battery testing process, comprising: A sealing assembly includes a water bath and an isolation cover. The water bath is filled with liquid and includes a charging position for accommodating a battery. The opening of the isolation cover faces downward and covers the charging position. The lower end of the isolation cover is below the liquid level. A gas recovery assembly includes a gas absorber and an exhaust pipe; the gas absorber is located on one side of the water bath and is filled with a reaction liquid; one end of the exhaust pipe is connected to the inner cavity of the isolation cover, and the other end of the exhaust pipe extends below the liquid surface inside the gas absorber.

[0008] As another embodiment of this application, it also includes: A tail gas recovery bottle is located on one side of the gas absorber, and the tail gas recovery bottle contains an adsorbent liquid. The exhaust pipe has a first end that extends into the gas absorber and is located above the liquid surface of the gas absorber; and a second end that extends into the exhaust gas recovery bottle and is located below the liquid surface of the exhaust gas recovery bottle.

[0009] In another embodiment of this application, both the exhaust pipe and the tailpipe are flexible hoses.

[0010] In another embodiment of this application, a support member is provided in the inner cavity of the water bath. The support member is used to support the battery, and the distance between the upper end surface of the support member and the liquid surface is less than the height of the battery. There is a gap between the lower end of the isolation cover and the support member that allows the charging wire to pass through.

[0011] In another embodiment of this application, the support member is a grid plate.

[0012] In another embodiment of this application, a heating component is installed at the bottom of the water bath, and the heating component is used to heat the liquid in the water bath.

[0013] In another embodiment of this application, the heating component is a heating coil, which is evenly distributed at the bottom of the water bath.

[0014] In another embodiment of this application, the water bath includes: A water injection pipe is connected to the upper part of the water bath tank and is used to inject liquid into the inner cavity of the water bath tank; A drain pipe, connected to the lower part of the water bath, is used to drain the liquid from the inner cavity of the water bath.

[0015] The beneficial effects of the harmful gas absorption device for battery testing provided by this utility model are as follows: Compared with the prior art, the harmful gas absorption device for battery testing no longer directly discharges acidic harmful gases into the environment. Instead, it uses an inverted isolation cover in a water bath to achieve a liquid seal by utilizing the liquid level in the water bath, thus confining the battery's vent valve within the isolation cover. This ensures that the acidic harmful gases generated during battery charging can only be released into the isolation cover, preventing them from overflowing. Then, the acidic harmful gases in the isolation cover are transported to a gas absorber through an exhaust pipe. By allowing the acidic harmful gases to react and be absorbed by the reaction liquid in a timely manner, the acidic harmful gases are treated, thereby preventing their discharge into the environment and avoiding harm to the health of workers. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 A front view of a harmful gas absorption device for battery testing provided in this embodiment of the present invention; Figure 2 A schematic diagram of a harmful gas absorption device for battery testing provided in this embodiment of the present invention; Figure 3 A longitudinal sectional view of a harmful gas absorption device for battery testing provided in this embodiment of the present invention; Figure 4 A schematic diagram showing the arrangement of the battery and support components provided in an embodiment of this utility model; Figure 5 A cross-sectional view of the water bath provided in an embodiment of this utility model.

[0018] In the diagram: 1. Water bath; 2. Water inlet pipe; 3. Drain pipe; 4. Isolation cover; 5. Charging cable; 6. Exhaust pipe; 7. Gas absorber; 8. Temperature control panel; 9. Power switch; 10. Battery; 11. Support component; 12. Heating assembly; 13. Exhaust gas recovery bottle. Detailed Implementation

[0019] To make the technical problems, technical solutions, and beneficial effects of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0020] Please see Figures 1 to 5 The present invention provides a device for absorbing harmful gases during battery testing. The device includes a sealing assembly and a gas recovery assembly. The sealing assembly includes a water bath 1 and an isolation cover 4. The water bath 1 is filled with liquid and includes a charging position for accommodating a battery 10. The opening of the isolation cover 4 faces downwards and covers the charging position, with its lower end below the liquid surface. The gas recovery assembly includes a gas absorber 7 and an exhaust pipe 6. The gas absorber 7 is located on one side of the water bath 1 and is filled with a reaction liquid. One end of the exhaust pipe 6 connects to the inner cavity of the isolation cover 4, and the other end extends below the liquid surface inside the gas absorber 7.

[0021] During charging, the battery 10 undergoes a chemical reaction, continuously releasing heat. To improve heat dissipation, a water bath charging method is commonly used. The battery 10 is placed in a water bath 1, with most of it submerged in water. The water in the water bath 1 continuously absorbs the heat transferred from the battery casing, preventing localized overheating. Simultaneously, by controlling the water temperature within the water bath 1, the battery temperature can be indirectly stabilized within a safe range, ensuring a smooth charging process. The water temperature in the water bath 1 can be maintained between 20℃ and 40℃.

[0022] To address the issue of acidic and harmful gases generated during the charging reaction of a traditional storage battery 10, this solution proposes the following: An inverted isolation cover 4 is installed inside a water bath 1, covering the charging position and enclosing the storage battery 10. The liquid in the water bath 1 provides a liquid seal. The isolation cover 4 forms a sealed cavity with the help of the liquid surface in the water bath 1, which collects the acidic and harmful gases generated by the storage battery 10. The isolation cover 4 is connected to a gas absorber 7 via an exhaust pipe 6. The acidic and harmful gases collected inside the isolation cover 4 enter the gas absorber 7 through the exhaust pipe 6, where they react with the reaction liquid and are absorbed by it.

[0023] The above reaction solution can be a strongly alkaline solution containing any one or more strongly alkaline substances such as sodium hydroxide, sodium carbonate, potassium hydroxide, and potassium carbonate.

[0024] This utility model provides a harmful gas absorption device for battery testing. Compared with the prior art, it no longer directly discharges acidic harmful gases into the environment. Instead, it inverts the isolation cover 4 into the water bath 1, using the liquid level in the water bath 1 to achieve a liquid seal, restricting the vent valve of the battery 10 to the isolation cover 4. This ensures that the acidic harmful gases generated during the charging of the battery 10 can only be released into the isolation cover 4, preventing the acidic harmful gases from overflowing. Then, the exhaust pipe 6 transports the acidic harmful gases in the isolation cover 4 to the gas absorber 7, allowing the acidic harmful gases to react and be absorbed by the reaction liquid in a timely manner, thus treating the acidic harmful gases and preventing their discharge into the environment, avoiding harm to the health of workers.

[0025] The isolation shield 4 can be made of polymer plastic, and its shape is not limited, such as... Figure 1 As shown, the isolation cover 4 can be a cuboid. The isolation cover 4 can also be a cube, a semicircle, a pyramid, etc. The size of the isolation cover 4 can be adjusted arbitrarily according to requirements, as long as it can cover the battery 10 while its lower opening aligns with the liquid level of the water bath 1 to achieve a liquid seal.

[0026] Optionally, since the isolation cover 4 contains some air after the battery 10 is installed, and the acidic harmful gas is discharged into the inner cavity of the isolation cover 4, the air pressure in the inner cavity of the isolation cover 4 increases. Under the action of air pressure, the gas in the isolation cover 4 is discharged into the gas absorber 7 through the exhaust pipe 6.

[0027] To ensure complete removal of acidic and harmful gases from the isolation enclosure 4, an air inlet pipe can be connected to the isolation enclosure 4. The end of the air inlet pipe is connected to an air source, and a valve is installed on the air inlet pipe. When the battery 10 is charging, both the valves on the air source and the air inlet pipe are closed, leaving only the exhaust pipe 6 open. Under pressure, the acidic and harmful gases are discharged into the gas absorber 7. When the battery 10 is fully charged, both the valves on the air source and the air inlet pipe are opened, allowing gas from the air source to enter the inner cavity of the isolation enclosure 4. This discharges any remaining gas from the isolation enclosure 4 along the exhaust pipe 6 into the gas absorber 7, preventing any residual acidic or harmful gases from escaping.

[0028] The container shape of the gas absorber 7 is arbitrary, and the material of the gas absorber 7 can be any of polypropylene (PP), polyethylene (PE), or polytetrafluoroethylene (PTFE), and its material does not react with strong alkaline solutions.

[0029] In some possible embodiments, the harmful gas absorption device for the battery detection process further includes a tail gas recovery bottle 13 and a tail gas pipe; the tail gas recovery bottle 13 is disposed on one side of the gas absorber 7, and the tail gas recovery bottle 13 contains an adsorbent liquid; the first end of the tail gas pipe extends into the gas absorber 7, and the first end of the tail gas pipe is above the liquid surface of the gas absorber 7; the second end of the tail gas pipe extends into the tail gas recovery bottle 13, and the second end of the tail gas pipe is below the liquid surface of the tail gas recovery bottle 13.

[0030] After entering the gas absorber 7, most of the acidic harmful gases react with the reaction liquid. However, some acidic harmful gases overflow due to incomplete reaction. The overflowing gas enters the tail gas recovery bottle 13 through the tail gas pipe and is absorbed by the adsorption liquid inside the tail gas recovery bottle 13. This adsorption liquid can be water or an alkaline solution.

[0031] The second end of the exhaust pipe extends below the liquid surface inside the exhaust gas recovery bottle 13. The exhaust gas recovery bottle 13 not only absorbs the overflowing gas but also balances the internal pressure of the gas absorber 7. In some possible embodiments, because acidic and harmful gases are being transported, the exhaust pipe 6 and the exhaust pipe need to be designed for corrosion resistance, sealing, and safety. Therefore, both the exhaust pipe 6 and the exhaust pipe are made of flexible tubing, such as silicone tubing.

[0032] When only holes are made on the isolation cover 4, the end of the exhaust pipe 6 is inserted into the hole and extends into the inner cavity of the isolation cover 4, and a sealing ring is provided between the exhaust pipe 6 and the hole. When holes are made on the isolation cover 4 and the hole opening is provided with a connector protruding outward, the end of the exhaust pipe 6 is fitted onto the connector and fixed by means of clamps or other structures.

[0033] The gas absorber 7 can adopt a bottle-shaped structure, with a through hole on its upper cap to allow the exhaust pipe 6 to extend into it. To prevent the highly alkaline liquid inside the gas absorber 7 from corroding the exhaust pipe 6, a glass tube can be connected to the end of the exhaust pipe 6. The exhaust pipe 6 is sealed to the glass tube, and the glass tube extends into the gas absorber 7 through the cap.

[0034] The structure of the exhaust gas recovery bottle 13 can be referenced from that of the gas absorber 7. Glass tubes can be connected to both ends of the exhaust pipe. The first end of the exhaust pipe is connected to the gas absorber 7 via a glass tube, and the second end of the exhaust pipe is connected to the exhaust gas recovery bottle 13 via a glass tube.

[0035] In some possible embodiments, please refer to Figures 3 to 4 The water bath 1 has a support member 11 in its inner cavity. The support member 11 is used to support the storage battery 10. The distance between the upper end surface of the support member 11 and the liquid surface is less than the height of the storage battery 10. There is a gap between the lower end of the isolation cover 4 and the support member 11 that allows the charging wire 5 to pass through.

[0036] Liquid is filled into the inner cavity of the water bath 1 to maintain a constant ambient temperature around the battery 10. Therefore, to ensure a uniform ambient temperature around the battery 10, a support 11 is placed at the bottom of the water bath 1, and the battery 10 is placed on the support 11. The support 11 ensures that the lower end of the battery 10 does not directly contact the bottom of the water bath 1, increasing the contact area between the surface of the battery 10 and the liquid in the water bath 1.

[0037] Optionally, the support member 11 is a mesh plate. The mesh plate is completely immersed in the liquid in the water bath 1, and the battery 10 is placed on the mesh plate with its upper end above the water surface. The isolation cover 4 is installed on the outside of the battery 10 from top to bottom, and the lower end of the isolation cover 4 is attached to the upper end surface of the support member 11.

[0038] Choosing a grid plate as the support 11 has the following advantages: (1) The open structure of the grid plate allows the liquid in the water bath 1 to flow freely, avoids the support 11 from blocking the water flow, eliminates local water temperature dead zones, ensures that the water temperature around the battery 10 is consistent, and maintains the overall temperature stability of the battery during charging. (2) The rigidity of the grid plate can evenly distribute the weight of the battery 10 and balance the stress on the lower end of the battery 10. (3) The design of the grid plate allows the lower end of the isolation cover 4 to be partially closed, and the charging wire 5 can extend downward into the hole of the grid plate and then pass around the lower end of the isolation cover 4 to enter the isolation cover 4 and connect to the battery 10. The charging wire 5 is arranged in a V-shaped bend to avoid opening holes in the isolation cover 4.

[0039] In some possible embodiments, please refer to Figure 5 A heating element 12 is installed at the bottom of the water bath 1. The heating element 12 is used to heat the liquid in the water bath 1.

[0040] The heating component 12 is used to heat the liquid in the water bath 1 to regulate the temperature of the liquid in the water bath 1 and keep the liquid in the water bath 1 at a constant temperature.

[0041] A power switch 9 and a temperature control panel 8 are installed on the water bath 1. Several temperature sensors are distributed inside the water bath 1 to detect the temperature of the liquid inside. The temperature control panel 8 is electrically connected to a controller, a heating assembly 12, and the temperature sensors. The controller receives electrical signals from the temperature sensors and then controls whether the heating assembly 12 is turned on. The heating assembly 12 is located below the support member 11. At the lower end of the support member 11, spaced-apart support feet are also provided, which contact the bottom plate of the water bath 1. With the support of the support feet, an installation space is formed between the support member 11 and the bottom plate of the water bath 1, and the heating assembly 12 is placed within this installation space.

[0042] The heating component 12 is a heating coil, which is evenly distributed at the bottom of the water bath 1. The heating coil can be distributed in a serpentine or spiral pattern.

[0043] The heating component 12 can also be a plate heater.

[0044] like Figure 1 As shown, the water bath 1 also includes a water inlet pipe 2 and a drain pipe 3. The water inlet pipe 2 is connected to the upper part of the water bath 1 and is used to inject liquid into the inner cavity of the water bath 1; the drain pipe 3 is connected to the lower part of the water bath 1 and is used to drain the liquid from the inner cavity of the water bath 1. The water inlet pipe 2 and the drain pipe 3 work together to adjust the liquid level in the water bath.

[0045] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A storage battery detection process harmful gas absorbing device characterized by comprising: include: The sealing assembly includes a water bath (1) and an isolation cover (4), the water bath (1) being filled with liquid and including a charging position for accommodating a battery (10), the opening of the isolation cover (4) facing downwards covering the charging position, and the lower end of the isolation cover (4) being below the liquid surface; The gas recovery assembly includes a gas absorber (7) and an exhaust pipe (6); the gas absorber (7) is located on one side of the water bath (1) and is filled with a reaction liquid; one end of the exhaust pipe (6) is connected to the inner cavity of the isolation cover (4) and the other end of the exhaust pipe (6) extends below the liquid surface inside the gas absorber (7).

2. A battery testing process harmful gas absorbing apparatus according to claim 1, wherein Also includes: A tail gas recovery bottle (13) is provided on one side of the gas absorber (7), and the tail gas recovery bottle (13) contains an adsorbent liquid. The exhaust pipe has a first end that extends into the gas absorber (7) and is located above the liquid surface of the gas absorber (7); and a second end that extends into the exhaust gas recovery bottle (13) and is located below the liquid surface of the exhaust gas recovery bottle (13).

3. A battery testing process harmful gas absorbing apparatus according to claim 2, wherein Both the exhaust pipe (6) and the tailpipe are flexible hoses.

4. A battery testing process harmful gas absorbing apparatus according to claim 1, wherein The water bath (1) has a support member (11) in its inner cavity. The support member (11) is used to support the storage battery (10). The distance between the upper end surface of the support member (11) and the liquid surface is less than the height of the storage battery (10). There is a gap between the lower end of the isolation cover (4) and the support member (11) that allows the charging wire (5) to pass through.

5. A battery testing process harmful gas absorbing apparatus according to claim 4, wherein The support member (11) is a grid plate.

6. A battery testing process harmful gas absorbing apparatus according to claim 1, wherein A heating component (12) is installed at the bottom of the water bath (1), and the heating component (12) is used to heat the liquid in the water bath (1).

7. A battery testing process harmful gas absorbing apparatus according to claim 6, wherein The heating component (12) is a heating coil, which is evenly distributed at the bottom of the water bath (1).

8. A battery testing process harmful gas absorbing apparatus according to claim 1, wherein The water bath (1) includes: Water injection pipe (2) is connected to the upper part of the water bath tank (1) and is used to inject liquid into the inner cavity of the water bath tank (1); A drain pipe (3) is connected to the lower part of the water bath (1) and is used to drain the liquid in the inner cavity of the water bath (1).

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