A lead-acid battery electric energy recovery device

Abstract

The invention discloses an electric energy recycling apparatus for lead-acid storage batteries. The electric energy recycling apparatus comprises two capacitors and a bidirectional electronic switch, wherein the two capacitors are connected with the bidirectional electronic switch in series separately; the two capacitors are connected with two groups of the lead-acid storage batteries in parallel; the bidirectional electronic switch is set to perform the functions as follows: the two ends of the capacitors are connected with the lead-acid storage batteries through the bidirectional electronic switch when the lead-acid storage batteries connected with the capacitors are charged or discharged; and the capacitors are disconnected from the lead-acid storage batteries through the bidirectional electronic switch when the lead-acid storage batteries connected with the capacitors are in a static state. When an electric motor (servo motor) of a two-wheel, three-wheel or four-wheel electric vehicle connected with the lead-acid storage batteries slows down or brakes, reverse pulse wave can be generated; the pulse energy is absorbed by the capacitors, and then the pulse energy is released to the electric motor when the electric motor works again; therefore, the electric energy recycling of the lead-acid storage batteries in the use process is realized; and meanwhile, a condition that the reverse pulse directly acts on the lead-acid storage batteries is avoided, so that the lead-acid storage batteries can be effectively protected.

Description

technical field [0001] The invention relates to the field of lead-acid batteries, in particular to a method for recovering electric energy of a lead-acid battery and a bidirectional electronic switch. Background technique [0002] A lead-acid battery is a battery whose electrodes are mainly made of lead and its oxides, and the electrolyte is a sulfuric acid solution. In the discharge state of the lead-acid battery, the main component of the positive electrode is lead dioxide, and the main component of the negative electrode is lead; in the charging state, the main component of the positive and negative electrodes is lead sulfate. When the electric motor (servo motor) of the two-, three-, and four-wheel electric vehicle connected to the lead-acid battery decelerates or brakes, the motor is equivalent to a generator, which will generate a reverse pulse wave, which will not only cause damage to the battery itself but also cause damage to the battery. A lot of energy wasted. T...

AI Technical Summary

Problems solved by technology

When the electric motors (servo motors) of two-, three-, and four-wheel electric vehicles connected to the lead-acid battery decelerate or brake, the motor is equivalent to a generator, which will generate reverse pulse waves, which will not only cause damage to the battery itself but also a lot of wasted energy

The lead-acid batteries in the prior art are directly connected to the electric motor, which causes a lot of energy waste during use, and the reverse pulse wave generated at the same time causes damage to the lead-acid battery, reducing the service life of the lead-acid battery

In the prior art, there is a lack of electric energy recovery device for reverse pulse generation of lead-acid batteries

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