CN102122738A - Current turn-off method and device of battery charging port - Google Patents
Current turn-off method and device of battery charging port Download PDFInfo
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- CN102122738A CN102122738A CN2010106243719A CN201010624371A CN102122738A CN 102122738 A CN102122738 A CN 102122738A CN 2010106243719 A CN2010106243719 A CN 2010106243719A CN 201010624371 A CN201010624371 A CN 201010624371A CN 102122738 A CN102122738 A CN 102122738A
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Abstract
The invention provides a current turn-off method of a battery charging port to judge sizes of the voltage of a power output end and the voltage of the charging port, wherein when the voltage of the power output end is higher than the voltage of the charging port, the charging current is circulated, and when the voltage of the power output end is lower than the size of the voltage of the charging port, the charging current is interrupted. The basic principle is that the on-off of a diverter switch of a reference voltage is controlled to change a reference voltage value of a voltage reference integrated circuit, therefore, the output state of a voltage control circuit can be changed and the change of the voltage value, namely, the control process of the on-off of the current, can be realized. The invention also provides a device using the method. By utilizing the device, the charging or deenergizing of the battery current can be carried out according to the different states of a battery; therefore, the dynamic charging can be realized and the optimization of the service performance of the battery can be guaranteed at all times.
Description
Technical field
The invention belongs to the battery charge field, be specifically related to a kind of electric current cut-off method and device of battery recharger port.
Background technology
Along with the development of current social, various electronic equipments all carry based on light, and the electronic equipment of various functions all might be can use whenever and wherever possible, thereby battery becomes its necessary part, and the charging method of battery is also arisen at the historic moment.Constantly there is high end cell special charger spare to release on the market, though and most of charging circuit can realize that voltage turn-offs, and can not realize that electric current turn-offs, various situations are all possible in battery charging process: and after battery charge, do not use immediately, battery can be lost because of self discharge causes electric weight, if it is last directly at charging port that battery uses, electric weight is lost to when a certain amount of, big multi-charger does not all have the function of automatic boost charge, cell voltage can reduce always, influences the normal serviceability of battery.
Summary of the invention
The technical problem to be solved in the present invention provides a kind of electric current cut-off method and device of battery recharger port, and it is pond charging untimely the taking out in back that finish, and sends a telegraph cell voltage and can also carry out boost charge automatically after on the low side.
The electric current cut-off method of battery recharger port of the present invention may further comprise the steps:
1) preparation one photoelectrical coupler, voltage feed end and pressure feedback port, described photoelectrical coupler connects Switching Power Supply, controls the size of electric power output voltage according to the voltage difference of voltage feed end and pressure feedback port;
2) diode of preparation is connected between power output end and the charging port, power output end voltage current flowing during greater than charging port voltage, power output end voltage during less than charging port voltage electric current disconnect;
3) current switching signal circuit, the voltage control circuit of electric power output voltage and battery charging voltage size compared in preparation one, the output signal of described voltage control circuit received current make-and-break signal circuit is with the adjustment electric power output voltage, and then the break-make of control charging current;
4) when electric power output voltage is higher than cell voltage, current switching signal end output charging current signal carries out the conducting of charging current;
5) when electric power output voltage equals cell voltage, current switching signal end output turn-off current signal reduces power supply and exports a boost charge magnitude of voltage to, and electric power output voltage is lower than cell voltage and causes charging current turn-off;
Described step 4) and step 5) do not have sequencing.
Preparation one electric power output voltage end, voltage reference integrated circuit and reference voltage diverter switch in described voltage control circuit, under the situation of power supply output constant voltage, change the reference voltage level of voltage reference integrated circuit by the break-make of described reference voltage diverter switch, thereby change the output state of described voltage control circuit, realize that it is the control procedure of current switching that magnitude of voltage changes.
The electric current cutoff device of battery recharger port of the present invention, it comprises a photoelectrical coupler, voltage feed end, pressure feedback port, diode, power output end and charging port, described voltage feed end, photoelectrical coupler are connected successively with pressure feedback port, photoelectrical coupler connects Switching Power Supply simultaneously, and described power output end, diode and charging port are connected successively.
It also comprises the comparison power output end voltage that connects successively and current switching signal output apparatus, the voltage control circuit of battery charging terminal voltage swing, described current switching signal output apparatus comprises a comparator, the in-phase end of comparator connects the battery charging terminal negative pole through a resistance, end of oppisite phase connects power output end, output connects described voltage control circuit, and voltage control circuit connects pressure feedback port.
Described voltage control circuit can utilize multiple element to realize the break-make effect of electric current:
When utilizing the metal-oxide-semiconductor element, comprise voltage reference integrated circuit, reference voltage diverter switch and three resistance, described reference voltage diverter switch is a small-power metal-oxide-semiconductor, its grid connects described current switching signal output apparatus by first resistance, its source electrode, each earth terminal that drains are in parallel with the 3rd resistance with the series circuit of second resistance, and be connected to the reference edge of voltage reference integrated circuit, described power output end is connected to the reference edge of voltage reference integrated circuit through the 4th resistance, and the voltage reference ic output connects described pressure feedback port.
Described voltage control circuit also can utilize triode, it comprises the voltage reference integrated circuit, reference voltage diverter switch and four resistance, described reference voltage diverter switch is a triode, its base stage connects described current switching signal output apparatus by first resistance, its emitter, each earth terminal of collector electrode is in parallel with the 3rd resistance with the series circuit of second resistance, and be connected to the reference edge of voltage reference integrated circuit, described power output end is connected to the reference edge of voltage reference integrated circuit through the 4th resistance, and the voltage reference ic output connects described pressure feedback port.
Described voltage control circuit also can utilize relay, it comprises the voltage reference integrated circuit, reference voltage diverter switch and four resistance, described reference voltage diverter switch is a relay and triode, the base stage of triode connects described current switching signal output apparatus by first resistance, its emitter, each earth terminal of collector electrode is in parallel with the 3rd resistance with the series circuit of second resistance, and be connected to the reference edge of voltage reference integrated circuit, described power output end is connected to the reference edge of voltage reference integrated circuit through the 4th resistance, and the voltage reference ic output connects described pressure feedback port.
The beneficial effect that uses the present invention to reach is: utilize simple conventional electronic devices and components then can carry out the charging or the power down process of battery current according to the different state of a tree name battery, realize dynamic charge function, guarantee the serviceability optimization of battery constantly.
Below in conjunction with accompanying drawing and embodiment, the present invention is described in further detail:
Description of drawings
Fig. 1 is physical circuit figure of the present invention;
Fig. 2 substitutes the circuit diagram of metal-oxide-semiconductor part with triode for the present invention;
Fig. 3 substitutes the circuit diagram of metal-oxide-semiconductor part with relay for the present invention.
Embodiment
Embodiment 1:
As shown in Figure 1, the electric current cut-off method of battery recharger port of the present invention may further comprise the steps:
1) preparation one photoelectrical coupler U1, voltage feed end Vcc and pressure feedback port, described photoelectrical coupler U1 connects Switching Power Supply, controls the size of electric power output voltage according to the voltage difference of voltage feed end Vcc and pressure feedback port;
2) diode D1 of preparation is connected between power output end V+ and the charging port VB+, and power output end voltage V+ is electric current I c circulation during greater than charging port voltage VB+, and power output end voltage V+ is electric current I c disconnection during less than charging port voltage VB+;
3) current switching signal circuit, the voltage control circuit of electric power output voltage Vcc and battery charging voltage VB-size compared in preparation one, the output signal y of described voltage control circuit received current make-and-break signal circuit is with adjustment electric power output voltage V+, and then the break-make of control charging current Ic;
4) when electric power output voltage V+ is higher than cell voltage VB-size, current switching signal end output charging current signal y carries out the conducting of charging current Ic;
5) when electric power output voltage V+ equals cell voltage VB-size, current switching signal end output turn-off current signal y reduces power supply and exports a boost charge magnitude of voltage V2+ to, and electric power output voltage V+ is lower than cell voltage VB-size and causes charging current Ic shutoff;
Described step 4) and step 5) do not have sequencing.
Preparation one electric power output voltage end V+, voltage reference integrated circuit U3 and reference voltage diverter switch in described voltage control circuit, under the situation of power supply output constant voltage, change the reference voltage level of voltage reference integrated circuit by the break-make of described reference voltage diverter switch, thereby change the output state of described voltage control circuit, realize that it is the control procedure of electric current I c break-make that output voltage values V+ changes.Charging finishes eve, and electric power output voltage V1+ equals VB+, is:
It is that the boost charge magnitude of voltage is that charging finishes back electric power output voltage V2+:
Can learn V2+＜VB+ by R11//R38＜R11, charging current Ic disconnects because of the single conduction of charging port voltage greater than charge power supply terminal voltage and diode D1.
The electric current cutoff device of battery recharger port of the present invention, it comprises a photoelectrical coupler U1, voltage feed end Vcc, pressure feedback port, diode D1, power output end V+ and charging port VB+, described voltage feed end Vcc, photoelectrical coupler U1 are connected successively with pressure feedback port, photoelectrical coupler U1 connects Switching Power Supply simultaneously, and described power output end V+, diode D1 are connected successively with charging port VB+.
It also comprises a comparison power output end voltage vcc that connects successively and current switching signal output apparatus, the voltage control circuit of battery charge terminal voltage VB-size, described current switching signal output apparatus comprises a comparator U9, the in-phase end of comparator connects battery charging terminal negative pole VB-through a resistance R 28, end of oppisite phase is connected to power output end Vcc through resistance, output connects described voltage control circuit, and described voltage control circuit connects pressure feedback port.
Described voltage control circuit can utilize multiple element to realize the break-make effect of electric current.
Utilize the metal-oxide-semiconductor element in the present embodiment, it comprises voltage reference integrated circuit U3, reference voltage diverter switch and three resistance, described reference voltage diverter switch is a small-power metal-oxide-semiconductor VT3, its grid connects the output y of described current switching signal output apparatus by resistance R 39, its source electrode, each earth terminal that drains is in parallel with resistance R 11 with the series circuit of resistance R 38, and be connected to the reference edge x of voltage reference integrated circuit, described power output end V+ process resistance R 10 is connected to the reference edge x of voltage reference integrated circuit, and the voltage reference ic output connects described pressure feedback port.
Charging finishes eve, current switching signal output apparatus y end output high level conducting metal-oxide-semiconductor VT3, and R38 is in parallel with R11, and electric power output voltage V1+ equals VB+, is:
Charging finishes after-current make-and-break signal output circuit output low level by metal-oxide-semiconductor VT3, and R38 relation in parallel with R11 disappears, and electric power output voltage V2+ is that the boost charge magnitude of voltage is:
Can learn V2+＜VB+ by R11//R38＜R11, charging current Ic disconnects because of the single conduction of charging port voltage greater than charge power supply terminal voltage and diode D1.
Realization current switching effect also can utilize following elements combination to realize in the voltage control circuit of the present invention:
Embodiment 2:
As shown in Figure 2, utilize triode Q4.Described voltage control circuit comprises voltage reference integrated circuit U3, reference voltage diverter switch and four resistance, described reference voltage diverter switch is triode Q4, its base stage connects described current switching signal output apparatus output y by resistance R 39, its emitter, each earth terminal of collector electrode are in parallel with resistance R 11 with the series circuit of resistance R 38, and be connected to the reference edge x of voltage reference integrated circuit, described power output end V+ process resistance R 10 is connected to the reference edge x of voltage reference integrated circuit, and the voltage reference ic output connects described pressure feedback port.
Charging finishes eve, current switching signal output apparatus y end output high level turn-on transistor Q4, and R38 is in parallel with R11, and electric power output voltage V1+ equals VB+, is:
Charging finishes after-current make-and-break signal output circuit output low level by triode Q4, and R38 relation in parallel with R11 disappears, and electric power output voltage V2+ is that the boost charge magnitude of voltage is:
Can learn V2+＜VB+ by R11//R38＜R11, charging current Ic disconnects because of the single conduction of charging port voltage greater than charge power supply terminal voltage and diode D1.
Embodiment 3:
As shown in Figure 3, utilize relay J.Described voltage control circuit comprises the voltage reference integrated circuit, reference voltage diverter switch and three resistance, described reference voltage diverter switch is a relay J and triode Q4, the base stage of triode Q4 connects described current switching signal output apparatus output y by resistance R 39, its collector electrode connects electric power output voltage V+ through resistance R 39, relay J one end connects the emitter of Q4, the other end is connected to voltage reference integrated circuit reference edge x through contact switch K and resistance R 38, the two ends of relay J are simultaneously in parallel with diode D9, the minus earth of D9, anode connects the emitter of Q4, and described voltage reference ic output connects described pressure feedback port.
Charging finishes eve, current switching signal output apparatus y end output high level turn-on transistor Q4, and relay contact switch closes, and R38 is in parallel with R11, and electric power output voltage V1+ equals VB+, is:
Charging finishes after-current make-and-break signal output circuit y end output low level by triode Q4, and relay contact switch disconnects, and R38 relation in parallel with R11 disappears, and electric power output voltage V2+ is that the boost charge magnitude of voltage is:
Can learn V2+＜VB+ by R11//R38＜R11, charging current Ic disconnects because of the single conduction of charging port voltage greater than charge power supply terminal voltage and diode D1.
More than invention is described only is most preferred embodiment of the present invention; not in order to restriction the present invention; all modification, replacement or improvement of being done on basis of the present invention, reference voltage diverter switch as described in replacing as the element with other similar or identical break-make attributes all falls within the scope of protection of the present invention.
Claims (7)
1. the electric current cut-off method of a battery recharger port is characterized in that, may further comprise the steps:
1) preparation one photoelectrical coupler, voltage feed end and pressure feedback port, described photoelectrical coupler connects Switching Power Supply, controls the size of electric power output voltage according to the voltage difference of voltage feed end and pressure feedback port;
2) diode of preparation is connected between power output end and the charging port, power output end voltage current flowing during greater than charging port voltage, power output end voltage during less than charging port voltage electric current disconnect;
3) current switching signal circuit, the voltage control circuit of electric power output voltage and battery charging voltage size compared in preparation one, the output signal of described voltage control circuit received current make-and-break signal circuit is with the adjustment electric power output voltage, and then the break-make of control charging current;
4) when electric power output voltage is higher than cell voltage, current switching signal end output charging current signal carries out the conducting of charging current;
5) when electric power output voltage equals cell voltage, current switching signal end output turn-off current signal reduces power supply and exports a boost charge magnitude of voltage to, and electric power output voltage is lower than cell voltage and causes charging current turn-off;
Described step 4) and step 5) do not have sequencing.
2. the electric current cut-off method of battery recharger port according to claim 1, it is characterized in that, preparation one electric power output voltage end, voltage reference integrated circuit and reference voltage diverter switch in described voltage control circuit, under the situation of power supply output constant voltage, change the reference voltage level of voltage reference integrated circuit by the break-make of described reference voltage diverter switch, thereby change the output state of described voltage control circuit, realize that it is the control procedure of current switching that magnitude of voltage changes.
3. device of implementing the electric current cut-off method of the described battery recharger port of claim 1, it is characterized in that, comprise a photoelectrical coupler, voltage feed end, pressure feedback port, diode, power output end and charging port, described voltage feed end, photoelectrical coupler are connected successively with pressure feedback port, photoelectrical coupler connects Switching Power Supply simultaneously, and described power output end, diode and charging port are connected successively.
4. the electric current cutoff device of battery recharger port according to claim 3, it is characterized in that, also comprise the comparison power output end voltage that connects successively and current switching signal output apparatus, the voltage control circuit of battery charging terminal voltage swing, described current switching signal output apparatus comprises a comparator, the in-phase end of comparator connects the battery charging terminal negative pole through a resistance, end of oppisite phase connects power output end, output connects described voltage control circuit, and voltage control circuit connects pressure feedback port.
5. the electric current cutoff device of battery recharger port according to claim 4, it is characterized in that, described voltage control circuit comprises the voltage reference integrated circuit, reference voltage diverter switch and three resistance, described reference voltage diverter switch is a small-power metal-oxide-semiconductor, its grid connects described current switching signal output apparatus by first resistance, its source electrode, each earth terminal that drains is in parallel with the 3rd resistance with the series circuit of second resistance, and be connected to the reference edge of voltage reference integrated circuit, described power output end is connected to the reference edge of voltage reference integrated circuit through the 4th resistance, and the voltage reference ic output connects described pressure feedback port.
6. the electric current cutoff device of battery recharger port according to claim 4, it is characterized in that, described voltage control circuit comprises the voltage reference integrated circuit, reference voltage diverter switch and four resistance, described reference voltage diverter switch is a triode, its base stage connects described current switching signal output apparatus by first resistance, its emitter, each earth terminal of collector electrode is in parallel with the 3rd resistance with the series circuit of second resistance, and be connected to the reference edge of voltage reference integrated circuit, described power output end is connected to the reference edge of voltage reference integrated circuit through the 4th resistance, and the voltage reference ic output connects described pressure feedback port.
7. the electric current cutoff device of battery recharger port according to claim 4, it is characterized in that, described voltage control circuit comprises the voltage reference integrated circuit, reference voltage diverter switch and three resistance, described reference voltage diverter switch is a relay and triode, the base stage of triode connects described current switching signal output apparatus by first resistance, collector electrode connects electric power output voltage through second resistance, described relay one end connects the emitter of triode, the other end is connected to voltage reference integrated circuit reference edge through contact switch and the 3rd resistance, the two ends of relay are simultaneously in parallel with a diode, the minus earth of diode, anode connects the emitter of described triode, and described voltage reference ic output connects pressure feedback port.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201010624371.9A CN102122738B (en) | 2010-12-30 | 2010-12-30 | Current turn-off method and device of battery charging port |
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| CN201010624371.9A CN102122738B (en) | 2010-12-30 | 2010-12-30 | Current turn-off method and device of battery charging port |
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| CN102122738A true CN102122738A (en) | 2011-07-13 |
| CN102122738B CN102122738B (en) | 2014-09-17 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110266088A (en) * | 2019-08-05 | 2019-09-20 | 邵琪 | The output voltage adjusting method and its adjusting circuit of charger |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1620744A (en) * | 2002-02-15 | 2005-05-25 | 慎亨范 | Portable charging apparatus having a charging battery built-in |
| CN201191772Y (en) * | 2008-01-31 | 2009-02-04 | 徐建华 | Electric charger |
| CN201966643U (en) * | 2010-12-30 | 2011-09-07 | 东莞市奇立电源有限公司 | Current turn-off device of battery charging port |
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- 2010-12-30 CN CN201010624371.9A patent/CN102122738B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1620744A (en) * | 2002-02-15 | 2005-05-25 | 慎亨范 | Portable charging apparatus having a charging battery built-in |
| CN201191772Y (en) * | 2008-01-31 | 2009-02-04 | 徐建华 | Electric charger |
| CN201966643U (en) * | 2010-12-30 | 2011-09-07 | 东莞市奇立电源有限公司 | Current turn-off device of battery charging port |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110266088A (en) * | 2019-08-05 | 2019-09-20 | 邵琪 | The output voltage adjusting method and its adjusting circuit of charger |
| CN110266088B (en) * | 2019-08-05 | 2024-05-31 | 宁波九荣环保科技有限公司 | Output voltage regulating method and regulating circuit for charger |
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| CN102122738B (en) | 2014-09-17 |
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