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

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...

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

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