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Lead-acid storage battery system with long service life and method for using same

A technology for lead-acid batteries and battery systems, applied in hybrid batteries, secondary battery charging/discharging, secondary battery repair/maintenance, etc., can solve problems such as low energy, large energy loss, and unstable voltage, and achieve high ratio performance, high power, improved power and service life

Inactive Publication Date: 2010-09-08
SHANGHAI INST OF MICROSYSTEM & INFORMATION TECH CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the shortcomings of supercapacitors are also obvious: first, the discharge voltage drops in a sloping line, and the voltage is unstable; second, the self-discharge rate of inorganic system electrochemical capacitors is very high, and the energy loss is large, while organic system capacitors are particularly expensive. , the general cost is 60 times that of lead-acid batteries and 10 times that of power batteries; third, the specific characteristics of currently applicable electrochemical capacitors are very low, generally below 10Wh / Kg and 10Wh / L, which significantly reduces the overall The energy density of the power system makes the problem of low energy ratio characteristics of lead-acid batteries more serious
Due to the low energy ratio and high price of the capacitor, generally its energy is low, so it can only work instantaneously, resulting in limited effect

Method used

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  • Lead-acid storage battery system with long service life and method for using same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] 36V-180Ah lead-acid battery A and 41.6V-20Ah power battery B with quasi-capacitance characteristics constitute a long-life lead-acid battery system. When the long-life lead-acid battery system outputs a large current to the external load instantaneously, because the voltage of B is higher than that of A, at this time B can output a large current instantaneously to make up for the lack of high-current discharge performance of A, effectively protecting the discharge process of A In the strong discharge; when the output current decreases, A normally supplies power, and at the same time through the circuit control, A charges to B, increasing the output current of A to compensate for the damage to A caused by small current discharge; when the energy is recovered, through The circuit control makes the power battery B with quasi-capacitive characteristics receive high current charging first, and only a small part of the current charges A, which effectively protects A from stron...

Embodiment 2

[0018] The long-life lead-acid battery system consists of a 36V-180Ah lead-acid battery A and a 43.2V-20Ah power battery B with quasi-capacitive characteristics. The working process of the long-life lead-acid battery system is the same as that of Embodiment 1.

Embodiment 3

[0020] The long-life lead-acid battery system consists of a 36V-180Ah lead-acid battery A and a 39.6V-20Ah nickel-metal hydride battery with quasi-capacitive characteristics. The working process of the long-life lead-acid battery system is the same as that of Embodiment 1.

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Abstract

The invention provides a lead-acid storage battery system with a long service life and a method for using the same. The lead-acid storage battery system with the long service life comprises a lead-acid storage battery set A and a high power battery set B with a quasi-capacitance characteristic. According to the working voltage and current needed by an external load, the battery set A and the battery set B with different quantities and characteristics are combined into the lead-acid storage battery system with the long service life through a certain circuit (comprising control). The lead-acid storage battery system with the long service life not only can bring the most of the advantages of the power and service life of the battery set B into full play, but also can bring the most of the advantages of the price and safety of the battery set A into full play so as to effectively improve the power characteristic and prolong the service life of the battery set A.

Description

technical field [0001] The invention relates to accumulators, in particular to a long-life lead-acid accumulator system, which is composed of lead-acid accumulators and power batteries with quasi-capacitance characteristics. Background technique [0002] With the continuous development of markets such as electric vehicles, electric bicycles, telecommunication base stations, and UPS backup power supplies, the requirements for the performance of batteries used as power supplies are also getting higher and higher. Specific energy, high specific power, long service life and low price, so a single battery is difficult to meet the requirements. [0003] Lead-acid batteries are stable in performance, safe and reliable, and low in price, but have poor weight and power ratio characteristics; power batteries with high specific energy and high specific power characteristics and quasi-capacitive characteristics have the disadvantages of high price and poor safety. [0004] CN100495859C...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M12/00H01M10/42H01M10/44
CPCY02E60/10
Inventor 夏保佳谢晓华娄豫皖张建张华辉颜建
Owner SHANGHAI INST OF MICROSYSTEM & INFORMATION TECH CHINESE ACAD OF SCI
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