CN203339249U - Gas conduction structure of lead-acid battery and its lead-acid battery - Google Patents

Abstract

The utility model belongs to the technical field of electrochemistry, and provides a gas guide structure of a lead-acid storage battery for guiding gas arranged on the pole group end part of a battery case. The gas guide structure comprises a plurality of gas guide pipes, wherein the gas guide pipes are vertically parallel to the pole group end part; the gas guide pipes are arranged between the inner wall and pole group end part of the battery case in a clamping way. The lead-acid accumulator comprises the battery case, a pole group and the gas guide structure of the lead-acid accumulator; the pole group is arranged in the inner cavity of the battery case. Compared with the prior art, the gas guide structure provided by the utility model has the advantages that gas inlet holes formed in the gas guide pipes provide gas guide channels for generated gas because the pole group end part is small in resistance and serious in steaming phenomenon, the gases, namely generated hydrogen and the like, enter the gas guide pipes through the gas inlet holes to be discharged, the gas guide pipes are small in occupied space, simple in structure and convenient to implement and the bottom ends of the gas guide pipes are arranged to be higher than the bottom of the pole group to ensure that the gas generated at the bottom of the pole group is discharged together, thereby reducing the impact of the gas on lead powder positioned on a positive plate and a negative plate, prolonging the service life of the lead-acid accumulator and the saving the resources.

Description

Gas conduction structure of lead-acid battery and its lead-acid battery

technical field

The utility model belongs to the technical field of lead-acid storage battery structure and provides a lead-acid storage battery gas conduction structure and the lead-acid storage battery.

Background technique

The electrochemical reaction principle of lead-acid batteries is to convert electrical energy into chemical energy for storage in the battery during charging, and convert chemical energy into electrical energy for external systems during discharge. Its charging and discharging process is completed by electrochemical reaction, and the electrochemical reaction formula is as follows:

positive electrode

negative electrode

It can be seen from the above reaction formula that during the production and charging of lead-acid batteries or the use of end customers, gases such as hydrogen will be generated inside the pole group, and the generated gas will emerge from the bottom, end and middle of the pole group, however , because the resistance at the end of the pole group is small, the phenomenon of gassing at the end of the pole group is more serious, and the gas will impact the lead powder on the positive and negative plates inside the pole group during the process of escaping, causing the lead powder to Soften and fall off, shorten the life of lead-acid batteries, and waste resources.

Utility model content

The utility model provides a gas-guiding structure for a lead-acid battery, aiming at solving the problem that the gas generated in the prior art impacts the lead powder on the positive plate and the negative plate during the use of the lead-acid battery, causing the lead powder to soften and fall off, shortening the lead time. Acid battery life issues.

In order to solve the above-mentioned technical problems, the gas guide structure of the lead-acid battery provided by the utility model is used to lead out the gas arranged at the end of the pole group in the battery case, and the gas guide structure includes a gas guide structure vertically parallel to the end of the pole group A plurality of air guide tubes are provided, and each of the air guide tubes is sandwiched between the inner wall of the battery case and the end of the electrode group.

Specifically, the tube body of the air guide tube is provided with a plurality of air inlet holes for the gas to enter the air guide tube.

Preferably, the diameter of the air inlet hole is 0.5-1 mm.

Further, the bottom end of the air duct is 10-25mm higher than the bottom of the pole group.

Specifically, the air guide structure further includes a support plate, and a through hole is provided on the support plate, and each of the air guide tubes is vertically inserted or passed through the through hole.

Further, the diameter of the through hole is greater than or equal to the outer diameter of the airway tube.

Preferably, the end of the air duct is equal to the support plate or 5-10mm higher than the support plate.

Preferably, the air guide tube is a thin-walled plastic tube.

Preferably, the support board is an ABS plastic board or a PP plastic board.

A lead-acid storage battery, comprising a battery case and an electrode group arranged in the inner chamber of the battery case, and also includes the above-mentioned gas guide structure of the lead-acid storage battery.

Compared with the prior art, the gas guiding structure of the lead-acid battery provided by the utility model is used to lead out the gas arranged at the end of the pole group in the battery shell. Since the external resistance of the pole group end is small, the gas leakage phenomenon is more serious , the air intake hole provided on the air guide tube provides a guide channel for the generated gas, and the generated gas such as hydrogen enters the air guide tube through the air intake hole and is discharged. The air guide tube is sandwiched between the end of the electrode group and the inner wall of the battery case , takes up little space, has a simple structure, and is easy to implement. In addition, the bottom end of the gas guide tube is set higher than the bottom of the pole group to ensure that the gas generated at the bottom of the pole group is also discharged, reducing the impact of gas on the positive and negative plates. The impact of lead powder prolongs the service life of lead-acid batteries and saves resources.

Description of drawings

Fig. 1 provides the structural representation of the gas conduction structure of lead-acid storage battery for the utility model;

Fig. 2 provides the structural representation of lead airway for the utility model;

Fig. 3 is a structural schematic diagram of a support plate provided by the present invention.

Detailed ways

In order to make the purpose, technical solution and advantages of the utility model clearer, the utility model will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model, and are not intended to limit the utility model.

Please refer to FIGS. 1 to 3 together. The gas guide structure 1 of the lead-acid battery is used to guide the gas provided at the end of the electrode group 3 in the battery case 2, including a plurality of vertically parallel to the end of the electrode group 3. Air ducts 11, each air duct 11 is sandwiched between the inner wall of the battery case 2 and the end of the electrode group 3, has a simple structure and is convenient to implement. Specifically, one or more air ducts 11 can be inserted or penetrated in the battery case Between the inner wall of 2 and the electrode group 3, the space occupied is small, and the additional air duct 11 will not affect the normal use of the lead-acid battery. After the gas enters the air duct 11, it is discharged by the safety valve on the lead-acid battery to reduce the discharge resistance of the gas, thereby alleviating the impact of the gas on the lead powder on the positive plate and the negative plate, and prolonging the service life of the lead-acid battery. save resources.

Specifically, referring to Fig. 1 and Fig. 2, a specific embodiment is provided for the gas guide structure of the lead-acid battery of the present invention. Since the external resistance at the end of the pole group 3 is relatively small, the phenomenon of gas escaping at the end of the pole group 3 is more serious, and a large amount of gas is generated at the end of the pole group 3, and the gas enters into the In the air guide tube 11, it is discharged again. Specifically, the density of the air intake holes 110 set up in the area near the end of the pole group 3 on the air guide hole 11 is relatively high. There are few air intake holes 110. In addition, in order to ensure the air intake, the size of the air intake holes 110 should not be too large, and a microporous structure can be used.

Preferably, referring to Fig. 1 and Fig. 2, a specific embodiment is provided for the gas guide structure of the lead-acid battery of the present invention. The hole 110 enters into the air duct 110 , and the small air intake hole 110 ensures the smooth entry of gas, and prevents impurities inside the lead-acid battery from entering the air duct 11 and blocking the air duct 11 .

Further, referring to Fig. 1 , a specific embodiment is provided for the gas conduction structure of the lead-acid storage battery of the present invention. The bottom end of the air conduction pipe 11 is 10-25mm higher than the bottom of the pole group 3, which is convenient for collecting the gas that emerges from the bottom of the pole group 3. Gas, the gas produced at the bottom of the pole group 3 is less, but it will also affect the normal work inside the lead-acid battery. There is a gap between the bottoms, and according to the knowledge of gas kinematics, gases such as hydrogen can enter the air guide tube 11 and then be discharged.

Specifically, referring to Fig. 1 and Fig. 3, a specific embodiment is provided for the gas guide structure of the lead-acid battery of the present invention. 11 is vertically inserted or penetrated in the through hole 120. The support plate 12 is used to support and fix the air guide tube 11. The support plate 12 and the air guide tube 11 are easy to install. On the support plate 12, holes can be drilled or mold production belts can be designed. The support plate 12 of the hole 120 has a simple structure, is easy to obtain materials, and has a low production cost.

Further, referring to Fig. 3 , a specific embodiment is provided for the gas guide structure of the lead-acid storage battery of the present invention, the aperture of the through hole 120 is greater than or equal to the outer diameter of the air guide tube 11, and the through hole 120 is smoothly penetrated by the air guide tube 11 For design standards, the diameter of the through hole 120 should not be too large than the outer diameter of the airway tube 11, and it should be ensured that the airway tube 11 will not fall off from the through hole 120.

Preferably, referring to Fig. 1 , a specific embodiment is provided for the gas guide structure of the lead-acid battery of the present invention, the end of the air guide tube 11 is level with the support plate 12 or 125-10mm higher than the support plate, and the end of the air guide tube 11 The end should slightly protrude from the through hole 120 to facilitate installation and fixing of the air duct 11. At the same time, the height of the air duct 11 should not exceed the highest position of the pole group 3, so as to avoid direct contact between the air duct 11 and the battery case 2, and exhaust will not be possible.

Preferably, referring to Fig. 2 , a specific embodiment is provided for the gas guide structure of the lead-acid battery of the present invention. The air guide tube 11 is a thin-walled plastic tube, and a plurality of air intake holes 110 need to be opened in the air guide tube 11, and thin-walled The plastic tube can be pierced with needles, etc., and the air inlet 110 is provided on the air duct 11, which is easy to operate, reduces the labor intensity of the operator, and improves work efficiency.

Preferably, referring to Fig. 3, a specific embodiment is provided for the gas guide structure of the lead-acid battery of the present invention, the support plate 12 is an ABS or PP plastic plate, because ABS plastic has good impact strength and Surface hardness, good dimensional stability, certain chemical resistance and good electrical insulation, therefore, the choice of ABS plastic board as the support board meets the requirements of performance, and PP plastic is the lightest one among general plastics , PP plastic has excellent mechanical properties and heat resistance, and the operating temperature range is -30°C to 140°C. At the same time, it has excellent electrical insulation performance and chemical stability, hardly absorbs water, and has no effect in contact with most chemicals. This product is corrosion-resistant, with a tensile strength of 30MPa. Its strength, rigidity and transparency are better than polyethylene. At the same time, the material cost is low, which meets the requirements for use in lead-acid batteries.

The utility model also provides a lead-acid storage battery, including a battery case 2, the inner cavity of the battery case 2 is provided with a pole group 3 erected vertically, and the above-mentioned air guide structure 1 is also provided between the battery case 2 and the pole group 3 . The lead-acid battery provided by the utility model adopts the gas-guiding structure 1 of the lead-acid battery, which reduces the damage to the electrode group 3 caused by the generated gas, prolongs the service life of the lead-acid battery, and saves resources.

The above descriptions are only preferred embodiments of the present utility model, and are not intended to limit the present utility model. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present utility model shall be included in this utility model. within the scope of protection of utility models.

Claims (10)

1. the gas-guiding structure of lead acid accumulator, for deriving the gas of being located at battery case utmost point group terminal section, it is characterized in that: comprise a plurality of wireways that vertically be arranged in parallel with described utmost point group terminal section, each described wireway is located between described internal surface of battery shell and described utmost point group terminal section.

2. the gas-guiding structure of lead acid accumulator as claimed in claim 1 is characterized in that: described wireway body is provided with the described gas of a plurality of confessions and enters the air admission hole in described wireway.

3. the gas-guiding structure of lead acid accumulator as claimed in claim 2, it is characterized in that: the diameter of described air admission hole is 0.5～1mm.

4. the gas-guiding structure of lead acid accumulator as claimed in claim 2 is characterized in that: the bottom of described wireway is than the described utmost point group high 10～25mm in bottom.

5. the gas-guiding structure of lead acid accumulator as claimed in claim 1, it is characterized in that: also comprise supporting bracket, described supporting bracket is provided with through hole, and each described wireway vertically plugs or is arranged in described through hole.

6. the gas-guiding structure of lead acid accumulator as claimed in claim 5, it is characterized in that: the aperture of described through hole is more than or equal to the external diameter of described wireway.

7. the gas-guiding structure of lead acid accumulator as claimed in claim 5 is characterized in that: the end of described wireway is equal with described supporting bracket or higher than described supporting bracket 5～10mm.

8. as the gas-guiding structure of the described lead acid accumulator of claim 1 to 7 any one, it is characterized in that: described wireway is thin-wall plastic pipe.

9. as the gas-guiding structure of the described lead acid accumulator of claim 5 to 7 any one, it is characterized in that: described supporting bracket is ABS plastic plate or PP plastic plate.

10. lead acid accumulator, comprise battery case and the utmost point group who is located at described battery case inner chamber, it is characterized in that: also comprise the gas-guiding structure as the described lead acid accumulator of claim 1 to 9 any one.

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