CN105226767A - A kind of dual-purpose intelligent charger - Google Patents
A kind of dual-purpose intelligent charger Download PDFInfo
- Publication number
- CN105226767A CN105226767A CN201510730011.XA CN201510730011A CN105226767A CN 105226767 A CN105226767 A CN 105226767A CN 201510730011 A CN201510730011 A CN 201510730011A CN 105226767 A CN105226767 A CN 105226767A
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- Prior art keywords
- charging
- current
- circuit
- power supply
- battery
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- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
A kind of dual-purpose intelligent charger, by power supply, constant current chopper device, charging and discharging circuit, control section forms, it is characterized in that: described power supply provides charging current for a constant voltage dc source and has 12 volts of DC power supply to provide control section power supply, charging and discharging circuit is pulse current charge, by metal-oxide-semiconductor and peripheral cell, triode, diode, resistance, electric capacity forms, constant current chopper device is by sampling resistor, filter circuit, amplifying circuit, oscillator and pulse width modulation oscillator formed, sampling resistor obtains charging current value signal, through filter and amplification, start PWM oscillator, trigger MOS switching tube in charge circuit, control the waveform widths of charging current, whole circuit forms closed loop current negative feedback, reach constant current.The present invention, automatically by battery discharge, and then can charge before charging.Can to long-term no battery, and the battery that memory effect is serious, restore funcitons is provided.
Description
Technical field
The present invention relates to charging technique field, particularly a kind of dual-purpose intelligent charger.
Background technology
The voltage of the AC power of constant current charge charger can fluctuate usually, needs employing DC constant flowing power, i.e. a constant current charger during charging.In time adopting constant current charge, battery can be made to have higher charge frequency, charging can be decided according to the charging interval very easily and whether stop, also can change the number of battery.Usually, a resistance on also can connecting between DC power supply and battery, to increase circuit internal resistance to produce constant electric current.Resistance value adjusts according to the electric current in charging latter stage, makes electric current can not exceed the permissible value of battery.Constant voltage charge is when carrying out constant voltage charge to battery, and the voltage at battery two ends determines charging current.Under this charging modes, charging initial stage current value ratio is comparatively large, and charging electric current in latter stage can diminish.Charged electrical fails to be convened for lack of a quorum and to change along with the fluctuation of voltage, therefore the maximum of charging current should be arranged on charging voltage the highest time, in order to avoid make over-charging of battery.In addition, in this kind of charging modes, charging charging voltage in latter stage can decline after reaching peak value.The charging current of battery will become greatly, and battery temperature can be caused to raise, and along with battery temperature raises, voltage drop, will cause the thermal runaway of battery, the performance of infringement battery.
Summary of the invention
For above problem, the object of the present invention is to provide a kind of dual-purpose intelligent charger, be automatically by battery discharge, and then can charge before charging, effectively saved the energy.
Technical scheme of the present invention is achieved in the following ways: a kind of dual-purpose intelligent charger, by power supply, constant current chopper device, charging and discharging circuit, control section forms, power supply provides charging current for a constant voltage dc source and has 12 volts of DC power supply to provide control section power supply, charging and discharging circuit is pulse current charge, by metal-oxide-semiconductor and peripheral cell, triode, diode, resistance, electric capacity forms, constant current chopper device is by sampling resistor, filter circuit, amplifying circuit, oscillator and pulse width modulation oscillator formed, sampling resistor obtains charging current value signal, through filter and amplification, start PWM oscillator, trigger MOS switching tube in charge circuit, control the waveform widths of charging current, whole circuit forms closed loop current negative feedback, reach constant current.
Described control section controls to carry out fully electric discharge before charging to eliminate memory effect to battery; By the measurement to cell voltage and temperature, in order to control the sequential of charging pulse, and control of discharge.
The present invention, automatically by battery discharge, and then can charge before charging.Can to long-term no battery, and the battery that memory effect is serious, restore funcitons is provided.
Accompanying drawing explanation
Fig. 1 is electrical block diagram of the present invention.
Embodiment
Known by Fig. 1, a kind of dual-purpose intelligent charger, by power supply, constant current chopper device, charging and discharging circuit, control section forms, power unit provides charging current for a constant voltage dc source and has 12 volts of DC power supply to provide control section power supply, charge circuit is pulse current charge, by metal-oxide-semiconductor and peripheral cell, triode, diode, resistance, electric capacity forms a switching circuit, constant current chopper device is by sampling resistor, filter circuit, amplifying circuit, oscillator and pulse width modulation oscillator formed, charging current value signal is obtained from the sampling resistor in charge circuit, through filter and amplification, start PWM oscillator, trigger MOS switching tube in charge circuit, control the waveform widths of charging current, whole circuit forms closed loop current negative feedback, reach the object of constant current.
Described control section controls to carry out fully electric discharge before charging to eliminate memory effect to battery; By the measurement to cell voltage and temperature, in order to control the sequential of charging pulse, and control of discharge.
Claims (2)
1. a dual-purpose intelligent charger, by power supply, constant current chopper device, charging and discharging circuit, control section forms, it is characterized in that: described power supply provides charging current for a constant voltage dc source and has 12 volts of DC power supply to provide control section power supply, charging and discharging circuit is pulse current charge, by metal-oxide-semiconductor and peripheral cell, triode, diode, resistance, electric capacity forms, constant current chopper device is by sampling resistor, filter circuit, amplifying circuit, oscillator and pulse width modulation oscillator formed, sampling resistor obtains charging current value signal, through filter and amplification, start PWM oscillator, trigger MOS switching tube in charge circuit, control the waveform widths of charging current, whole circuit forms closed loop current negative feedback, reach constant current.
2. a kind of dual-purpose intelligent charger according to claim 1, is characterized in that: described control section controls to carry out fully electric discharge before charging to eliminate memory effect to battery; By the measurement to cell voltage and temperature, in order to control the sequential of charging pulse, and control of discharge.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510730011.XA CN105226767A (en) | 2015-11-02 | 2015-11-02 | A kind of dual-purpose intelligent charger |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510730011.XA CN105226767A (en) | 2015-11-02 | 2015-11-02 | A kind of dual-purpose intelligent charger |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105226767A true CN105226767A (en) | 2016-01-06 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510730011.XA Pending CN105226767A (en) | 2015-11-02 | 2015-11-02 | A kind of dual-purpose intelligent charger |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105226767A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109525015A (en) * | 2018-12-07 | 2019-03-26 | 集美大学 | The charging circuit of small-capacity cells |
-
2015
- 2015-11-02 CN CN201510730011.XA patent/CN105226767A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109525015A (en) * | 2018-12-07 | 2019-03-26 | 集美大学 | The charging circuit of small-capacity cells |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20160106 |