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Electrolyte composition of lead storage battery and lead storage battery using the same

A lead-acid battery and electrolyte technology, applied in the direction of lead-acid batteries, lead-acid battery construction, batteries, etc., can solve problems such as short life, electrolyte reduction, stratification, etc., to reduce complaint rate and claim costs, and improve stratification Phenomenon, the effect of improving durability

Active Publication Date: 2018-04-24
HYUNDAI MOTOR CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Ignoring this phenomenon, repeated charging and discharging reactions lead to a sharp drop in battery capacity and premature end of life.
[0005] In order to solve the main cause of the short life of such lead-acid batteries, that is, the phenomenon of electrolyte stratification, as a method of suppressing the stratification itself, the existing Japanese Laid-Open Patent No. 2001-0102027 discloses a laminated anode, cathode and glass fiber. In the separator method, since the anode and cathode are laminated with glass fiber separators, there is a serious problem that the internal impedance of the battery increases rapidly.
[0006] Moreover, Japanese Laid-Open Patent No. 2005-203318 discloses adding a metal with a lower hydrogen overvoltage at the cathode to promote gas generation on the cathode surface during charging, thereby circulating the electrolyte. However, gas generation is accelerated during charging. , resulting in a decrease in the electrolyte, and as a result, there is a problem of short life

Method used

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  • Electrolyte composition of lead storage battery and lead storage battery using the same
  • Electrolyte composition of lead storage battery and lead storage battery using the same
  • Electrolyte composition of lead storage battery and lead storage battery using the same

Examples

Experimental program
Comparison scheme
Effect test

experiment example 1

[0063] Experimental Example 1: Evaluation of Influence of Discharge Reaction on Stratification Phenomenon

[0064] In order to confirm the magnitude of the dark current during dark current discharge and the change in the specific gravity of the upper / lower part of the electrolyte of the lead acid battery over time, an existing lead acid battery was prepared, and then the experiment was carried out under the following experimental conditions. Specifically, dark current ① natural discharge (0mA), ② 11mA (condition for turning on (ON) the dark current cutoff device), and ③ 22mA (condition for turning off (OFF) the dark current cutoff device) in the upper part / Lower specific gravity. Also, the measured upper / lower specific gravity difference of the battery is shown graphically. image 3 , Figure 4 The results are shown.

[0065] image 3 It is a graph showing the change in specific gravity of the upper part / lower part of the electrolytic solution of the lead acid battery acc...

experiment example 2

[0068] Experimental Example 2: Evaluation of Influence of Charge / Discharge Reaction on Stratification Phenomenon

[0069] In order to evaluate the influence of the charge / discharge reaction of the lead-acid battery on the stratification phenomenon, the change in the specific gravity of the electrolytic solution at each stage of charge / discharge of the lead-acid battery was analyzed under the following experimental conditions. Specifically, the electrolyte solution of each stage of the existing lead-acid storage battery performing discharge (13.6A, 20hr)→storage (10hr)→charging (13.6A, 24hr)→storage (10hr)→discharge (13.6A, 20hr) was measured proportion. At this time, the lead-acid battery is at 13.6A: 4*I 20 (I 20 =3.4A, 68Ah base 20 time proportional discharge current) under the conditions. Figure 5 , Figure 6 The results are shown.

[0070] Figure 5 It is a graph which shows the voltage change with time after the lead-acid storage battery of the said experiment exam...

experiment example 3

[0073] Experimental example 3: Evaluation of the deviation of the upper / lower specific gravity of the electrolyte of the lead-acid battery based on the specific gravity of the dispersant and the content used

[0074] In order to perform evaluation (stratification progress index) of the electrolytic solution upper part / lower part specific gravity deviation (stratification phenomenon progress index) based on the specific gravity of a dispersant and the usage content of a lead acid battery, an electrolytic solution was produced by the following method. Specifically, the specific gravity and component ratio shown in the following Table 2 were injected|thrown-in, and the electrolytic solution for lead acid batteries was manufactured. Among them, as the dispersant, a spherical powder dispersant having an average particle size of 100 μm was used. A mixture of polypropylene and talc filler was used as dispersant.

[0075] Using the electrolyte solution produced as above, a lead stora...

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Abstract

An electrolyte composition for a lead storage battery and a lead storage battery using the same are provided. More particularly, the electrolyte composition of a lead storage battery and the lead storage battery using the same improve stratification of an electrolyte without use of a separate mechanical device by using a natural stirring effect caused by a specific gravity difference between a dispersant having a specific gravity of from about 1.02 to about 1.35 and an electrolyte including distilled water and sulfuric acid. Due to the reduction in mechanical components, the electrolyte composition for a lead storage battery and the lead storage battery which are disclosed herein have enhanced durability compared to conventional batteries.

Description

technical field [0001] The present invention relates to an electrolyte composition for a lead storage battery and a lead storage battery using the electrolyte composition, more particularly, to an electrolyte composition for a lead storage battery and a lead storage battery using the electrolyte composition, which contains A specific dispersant with a specific gravity of 1.02 to 1.35 is mixed in the electrolyte of distilled water and sulfuric acid, so that no additional mechanical device is needed, and the stratification of the electrolyte is greatly improved by using the natural stirring principle based on the difference in specific gravity, thus compared with the existing The battery has greatly improved durability. Background technique [0002] The existing lead-acid batteries for automobiles mainly use SLI (Starting, Lighting, Ignition: starting, lighting, ignition) as the main function. Recently, as the demand for improved fuel economy has increased, there has been a d...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M10/08
CPCH01M10/08H01M2300/0011H01M2220/20Y02E60/10Y02P70/50H01M10/12
Inventor 沈赈用朴俊亨秦在垠
Owner HYUNDAI MOTOR CO LTD
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