CN201243067Y

CN201243067Y - Device for prolonging battery lifetime

Info

Publication number: CN201243067Y
Application number: CNU2008200583151U
Authority: CN
Inventors: 范晔平; 姜志良; 张忠仁
Original assignee: SHANGHAI GUANGWEI ELECTRIC CO Ltd
Current assignee: SHANGHAI GUANGWEI ELECTRIC CO Ltd
Priority date: 2008-05-12
Filing date: 2008-05-12
Publication date: 2009-05-20
Anticipated expiration: 2018-05-12

Abstract

A battery life extender is connected in series with a storage battery in the current circuit and comprises an intelligent switch, a voltage regulator circuit, a variable frequency inverter circuit, a pulse circuit and an energy-saving timer which are sequentially connected in circuit; and the battery life extender makes use of the energy of the storage battery to maintain the activity of the battery. The battery life extender enables the storage battery to keep the activity, extend the service life, improve the charging efficiency, reduce the charge power and save the charge energy.

Description

Batter life extender

Technical field

The utility model relates to a kind of batter life extender, relates in particular to a kind of batter life extender that is applied on the sealed lead acid storage battery.

Background technology

Phenomenons such as lead-acid battery ubiquity inside battery self discharge, because after there is little electric current self discharge for a long time in inside battery, will produce tiny lead sulfate crystal (annotate: tiny lead sulfate crystal is the invertibity material) on the inside battery pole plate, if but these tiny lead sulfate crystal are not handled timely, will cause large tracts of land lead sulfate crystal, be commonly called as " sulfuration ", large-area sulfuration crystal is carried out on battery pole plates, form barrier and block the pole plate hole, make electrolyte infiltration difficulty and increased the internal resistance of cell, battery capacity is obviously descended, even can cause the battery necrosis.

Also there are some similar products like to occur in the market, but major part all will rely on external power source (civil power) that working power is provided or be hardened to purpose to battery charging and discharging to reach the inhibition lead sulfate by artificial timing, this brings very big inconvenience to the user undoubtedly, also can bring certain potential safety hazard simultaneously.

The utility model content

The utility model designs at the above-mentioned characteristic of lead-acid battery, by the auto monitoring and measurement circuit storage battery is discharged and recharged effectively, in time suppress lead sulfate crystallization and the diffusion that lead-acid battery produces because of self discharge, again be converted into the reversible lead sulfate that crystal is tiny, chemical property is high to reach the lead sulfate crystal, make battery maintain charge-discharge performance efficiently in a long time, prolong the battery purpose in useful life thereby reach.

In order to achieve the above object, the utility model provides a kind of batter life extender, is connected in series in current circuit with storage battery, and this batter life extender comprises:

Intelligent switch, circuit connects storage battery;

Voltage stabilizing circuit connects the both positive and negative polarity of described storage battery by described intelligent switch circuit;

Frequency conversion inverter circuit, circuit connect described voltage stabilizing circuit;

Impulse circuit, circuit connect the both positive and negative polarity of described frequency conversion inverter circuit and storage battery;

Energy-conservation timer, circuit connect described accumulator anode and cathode and intelligent switch;

Energy-conservation timer reads battery tension and picks up counting, and the supervision storage battery moment electric weight of depositing, if the cell voltage surplus is low excessively, be that the alarm user in time mends to battery, after timer reached the scheduled time, energy-conservation timer sent a clock signal and gives intelligent switch, makes intelligent switch closure (switch is in open-circuit condition under the normality), voltage stabilizing circuit is got battery feed and is entered the voltage stabilizing operating state, for back level frequency conversion inverter circuit provides stable working power; The frequency conversion inverter circuit comprises accumulator, inversion step-up circuit and PWM (the Pulse Width Modulation pulse-width modulation) circuit that circuit connects, according to the stored energy of battery capacity size decision accumulator and the duty ratio of PWM, by pwm circuit control inversion step-up circuit low pressure is boosted again, and high pressure outputed to impulse circuit, finish frequency conversion inversion process; Impulse circuit directly is transferred to storage battery again with this high-voltage pulse again, and acts on storage battery advance directed current limliting processing by the high voltage pulse after boosting, and removes the sulfide on the internal storage battery pole plate, makes storage battery keep active.

The utility model adopts battery self power supply energy regularly to discharge and recharge to battery, be exclusively used in the lead-acid battery regular maintenance and maintain to reach the purpose that storage battery is lengthened the life and economized on electricity, the utility model can be followed according to the battery capacity size and be adjusted the correlation technique parameter, adopt the auto monitoring and measurement circuit that battery is discharged and recharged effectively, in time suppress lead sulfate crystal deposition, sclerosis and diffusion that lead-acid battery produces because of self discharge, thereby make the lead sulfate crystal be converted into the reversible lead sulfate that crystal is tiny, chemical property is high again.

Description of drawings

Fig. 1 is the electrical block diagram of the batter life extender that provides of the utility model.

Embodiment

Following according to Fig. 1, specify preferred embodiment of the present utility model:

As shown in Figure 1, the batter life extender that the utility model provides can be applicable in the emergency power supply, is connected in series in current circuit with sealed lead acid storage battery in the emergency power supply, and this batter life extender comprises:

Intelligent switch 101, circuit connects storage battery;

Voltage stabilizing circuit 102 connects the both positive and negative polarity of described storage battery by described intelligent switch 101 circuit;

Frequency conversion inverter circuit 103, circuit connect described voltage stabilizing circuit 102;

Impulse circuit 104, circuit connect the both positive and negative polarity of described frequency conversion inverter circuit 103 and storage battery;

Energy-conservation timer 105, circuit connect described accumulator anode and cathode and intelligent switch 101.

In the present embodiment, energy-conservation timing circuit carries out the control of timing break-make by IC2051 single-chip microcomputer and IC8583 clock module, and other has battery to survey undervoltage warning circuit excessively, guarantees that battery constantly can provide normal working power;

Intelligent switch 101 is made up of relay and control switch pipe (S8050) and low pressure alarming circuit, and when delay time arrived, relay work provided working power to late-class circuit;

Voltage stabilizing circuit 102 usefulness voltage-stabiliser tubes and electric capacity are formed voltage stabilizing circuit;

The square-wave generator that frequency conversion inverter circuit 103 adopts LC accumulator and high frequency transformer and PWM module (square-wave generator of KA7500B or EDM Generator of Adjustable Duty Ratio) to form provides pulse control signal to two electronic switching tubes, at first be that battery carries out discharge energy-storage to accumulator, utilize the energy of circuitry stores to carry out inversion boosting again, form high-voltage pulsed source;

Impulse circuit 104 instead carries out pulse current charge to battery with regard to utilizing high-voltage pulse after the frequency conversion to carry out rectification pressure limiting, current limliting.

Energy-conservation timer 105 reads battery tension and picks up counting, and the supervision storage battery moment electric weight of depositing, if the cell voltage surplus is low excessively, be that the alarm user in time mends to battery, after timer reaches the scheduled time, energy-conservation timer 105 sends a clock signal and gives intelligent switch 101, make intelligent switch 101 closures (switch is in open-circuit condition under the normality), voltage stabilizing circuit 102 is got battery feed and is entered the voltage stabilizing operating state, for back level frequency conversion inverter circuit 103 provides stable working power; Frequency conversion inverter circuit 103 comprises accumulator, inversion step-up circuit and the pwm circuit that circuit connects, according to the stored energy of battery capacity size decision accumulator and the duty ratio of PWM, by pwm circuit control inversion step-up circuit low pressure is boosted again, and high pressure outputed to impulse circuit 104, finish frequency conversion inversion process; Impulse circuit 104 directly is transferred to storage battery again with this high-voltage pulse again, and acts on storage battery advance directed current limliting processing by the high voltage pulse after boosting, and removes the sulfide on the internal storage battery pole plate, makes storage battery keep active.

Claims

1. a batter life extender is characterized in that, this batter life extender and storage battery are connected in series in current circuit, and this batter life extender comprises:

Intelligent switch (101), circuit connects storage battery;

Voltage stabilizing circuit (102) connects the both positive and negative polarity of described storage battery by described intelligent switch (101) circuit;

Frequency conversion inverter circuit (103), circuit connect described voltage stabilizing circuit (102);

Impulse circuit (104), circuit connect the both positive and negative polarity of described frequency conversion inverter circuit (103) and storage battery;

Energy-conservation timer (105), circuit connect described accumulator anode and cathode and intelligent switch (101).