CN102111009B - Battery charger circuit - Google Patents
Battery charger circuit Download PDFInfo
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- CN102111009B CN102111009B CN 201110034755 CN201110034755A CN102111009B CN 102111009 B CN102111009 B CN 102111009B CN 201110034755 CN201110034755 CN 201110034755 CN 201110034755 A CN201110034755 A CN 201110034755A CN 102111009 B CN102111009 B CN 102111009B
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Abstract
本发明公开了一种电池充电器电路，具体为一种半桥式双管开关电源充电器电路，包括整流滤波电路，双管反馈振荡及稳压电路，全波整流输出电路。本电路具有输出功率大，工作效率高，降低了开关管的要求耐压值，体积小，重量轻，使用寿命长等特点。
The invention discloses a battery charger circuit, specifically a half-bridge double-tube switching power supply charger circuit, which includes a rectification filter circuit, a double-tube feedback oscillation and voltage stabilization circuit, and a full-wave rectification output circuit. The circuit has the characteristics of large output power, high working efficiency, reduced required withstand voltage value of the switch tube, small size, light weight, and long service life.
Description
Technical field
The present invention relates to a kind of battery charger circuit, be specially a kind of half-bridge type double-pipe Switching Power Supply charger circuit.
Background technology
At present, the Switching Power Supply battery charging circuit that uses, generally all belong to inverse-excitation type positive activation type single tube output switch power source circuit, because the required withstand voltage of its switch triode is higher, require power larger to it simultaneously, so the power output of its circuit rated voltage less and required switch triode is higher.
Summary of the invention
The present invention is directed to the higher technical problem of power output rated voltage less and required switch triode of its circuit of a few days ago Switching Power Supply battery charging circuit existence, the invention provides a kind of battery charger circuit.
Technical scheme of the present invention:
A kind of battery charger circuit comprises current rectifying and wave filtering circuit, two-tube feedback oscillation and voltage stabilizing circuit, full-wave rectification output circuit;
Wherein: described current rectifying and wave filtering circuit comprises insurance RD, the bridge rectifier that is comprised of diode D1, D2, D3, D4 and capacitor C 3, C4; Insurance RD is series at the input of bridge rectifier, and capacitor C 3, C4 are series at the output of bridge rectifier;
Described two-tube feedback oscillation and voltage stabilizing circuit comprise triode Q1, Q2, diode D5, D6, D7, D8 resistance R 1, R2, R3, R4, R5, R6, capacitor C 1, C2, C5 and transformer B1, B2; Resistance R 1 and capacitor C 1 are series at the output of bridge rectifier; Capacitor C 3 and C4 are series at the output of bridge rectifier; The collector electrode of triode Q1 connects the output head anode of bridge rectifier, and the end of the emitter connecting resistance R2 of triode, the other end of resistance R 2 are connected to the interface of resistance R 1 and capacitor C 1; The L1 winding of resistance R 5 series transformer B1, D5 is in parallel with diode, and its two ends connect respectively the interface of base stage and resistance R 1 and the capacitor C 1 of triode Q1; The winding L 2 of transformer B1 is connected with the winding L 4 of transformer B2, respectively the interface of the interface of connecting resistance R1 and capacitor C 1 and capacitor C 3 and C4; The collector electrode connecting resistance R1 of triode Q2 and the interface of capacitor C 1, the end of emitter connecting resistance R3, the negative pole of output end of another termination bridge rectifier of R3; The winding L 3 of resistance R 6, transformer B1 is connected with capacitor C 2, and D6 is in parallel with diode, connects respectively the negative pole of the output of the base stage of triode and bridge rectifier; The L5 windings in series of diode D7, D8 and transformer B2, the base stage of a termination triode Q2, the negative pole of output end of another termination bridge rectifier; The negative pole of output end of one termination bridge rectifier of capacitor C 5, the interface of another terminating diode D7 and D8;
Described full-wave rectification output circuit comprises diode D9, D10, D11, capacitor C 6, resistance R 7; The positive pole of diode D9, D10 connects respectively the two ends of the winding L 6 of transformer B2, and negative pole is linked together, as an output of power circuit; The centre tap end of the winding L 6 of transformer B2 is as another output of power circuit; Light-emitting diode D11 connects with resistance R 7, and is in parallel with capacitor C 6, the negative pole of one terminating diode D9, D10, the centre tap end of the winding L 6 of another termination transformer B2.
Since used the half-bridge type double-pipe Switching Power Supply, so that Switching Power Supply power output of the present invention is large, high efficiency.The switch transformer volume can be done littlely, has reduced the withstand voltage that requires of switching tube, because the life-span of Switching Power Supply depends primarily on the life-span of switching tube.Therefore, the present invention has energy-efficient, and volume is little, and is lightweight, the characteristics of long service life.
Description of drawings
Fig. 1 is the circuit theory diagrams of invention.
Embodiment
The present invention will be further described below in conjunction with accompanying drawing 1.
Among Fig. 1, the present invention is a kind of battery charger circuit, comprises current rectifying and wave filtering circuit, two-tube feedback oscillation and voltage stabilizing circuit, full-wave rectification output circuit.Current rectifying and wave filtering circuit comprises diode D1, D2, D3, D4, capacitor C 3, C4 and insurance RD.Form bridge rectifier by D1, D2, D3, D4, capacitor C 3, C4 are filter capacitor.Civil power forms a direct voltage stably in capacitor C 3, C4 again through insurance RD after diode D1, D2, D3, D4 rectification, use for load.
Described two-tube feedback oscillation and voltage stabilizing circuit comprise triode Q1, Q2, diode D5, D6, D7, D8 resistance R 1, R2, R3, R4, R5, R6, capacitor C 1, C2, C5 and transformer B1, B2.
Wherein, two-tube feedback oscillation circuit comprises triode Q1, Q2, diode D5, D6,, resistance R 1, R2, R3, R4, R5, R6, capacitor C 1, C2, transformer B1, B2.Triode Q1 and Q2 are the symmetrical output switch pipe of semi-bridge switching voltage regulator.Resistance R 2 and R3 are respectively the emitter current-limiting resistance of triode Q1 and Q2.Diode D5 and D6 are respectively the emitter protection diode of triode Q1 and Q2.Resistance R 5 and R6 are respectively the base stage feedback current-limiting resistance of triode Q1 and Q2.Resistance R 1 is the collector resistance of triode Q2.Resistance R 4 is the base biasing resistor of triode Q2.Capacitor C 1 is high pressure reverse impulse Absorption Capacitance, the safety of protection triode Q1 and Q2.Capacitor C 2 is the base stage feedback coupling capacitance of triode Q2.Transformer B1 is the feedback oscillation transformer, and L1, L2, three windings of L3 are arranged, and winding L 1 is the base stage feedback coil of triode Q1, and winding L 2 is the principal current primary coil, and winding L 3 is the base stage feedback coil of triode Q2.Transformer B2 is the switch output transformer, and L4, L5, three windings of L6 are arranged, and winding L 4 is the principal current primary coil, and winding L 5 is the voltage stabilizing feedback coil, and winding L 6 is the full-wave rectification output winding.Main power voltage provides the base promoter electric current by resistance R 1 and R4 for triode Q2 during startup, so in the collector loop of triode Q2, form collector current, winding L 4 and the winding L 2 of the transformer B1 collector electrode that arrive triode Q2s of the midpoint potential of filter capacitor C3 and C4 by triode B2, in winding L 2, produce an electric current, respond to through transformer B1, in winding L 1 and L3, produce respectively an opposite polarity induced voltage of equal and opposite in direction, winding L 1 is delivered to the base stage of triode Q1 to the negative polarity induced voltage by resistance R 5, and winding L 3 is delivered to the induced voltage of positive polarity the base stage of triode Q2 by resistance R 6.Produce a larger electric current in the winding L 2 at transformer B1 after triode Q2 amplifies, in winding L1 and L3, also produce a larger induced current through transformer B1 induction, again deliver to respectively the base stage of triode Q1 and Q2.The formation positive feedback so goes round and begins again.Because the winding L 1 of transformer B1 is opposite with the induced voltage equal and opposite in direction polarity among the L3, so when triode Q2 saturation conduction, triode Q1 carries and ends, and triode Q2 carries triode Q1 saturation conduction when ending, and final saturation conduction ends state with carrying so that triode Q1 and Q2 work in alternately.
Voltage stabilizing circuit comprises diode D7 and D8, capacitor C 5.When causing that because line voltage is too high output voltage is too high, forming negative direct voltage through diode D8 rectification in capacitor C 5 also raises, this negative dc voltage is clamped on a lower current potential through voltage stabilizing didoe D7 with the base voltage of switching tube Q2, reduced the base voltage of triode Q2, so that output voltage is got back to again normal value, keep voltage stabilizing output.
The full-wave rectification output circuit comprises diode D9, D10, D11, capacitor C 6, resistance R 7.Diode D9 and D10 are the full-wave rectification diode, and capacitor C 6 is filter capacitor, and diode D11 is out-put supply indication light diode, and resistance R 7 is current-limiting resistance.Replace saturation conduction and carry when ending at switching tube Q1 and Q2, the also positive and negative ALT pulse electric current of corresponding generation in the winding L 4 of transformer B2, in winding L 6, produce induced voltage through transformer B2 induction, this induced voltage forms stably direct voltage in capacitor C 6 after diode D9 and D10 full-wave rectification, output to load.
The present invention adopts half-bridge type double-pipe output switch power source circuit, and inverse-excitation type positive activation type single tube output switch power source relatively has the following advantages relatively:
Semibridge system transformer switch output power of power supply is very large, and operating efficiency is very high.Because two switching tube one after the other work are equivalent to simultaneously power output of two Switching Power Supplies, its power output approximates the twice of single Switching Power Supply power output.Therefore, semibridge system transformer switch output power of power supply is very large, and operating efficiency is very high, after full-wave rectification, mains ripple coefficient S v and the current pulsation coefficient S i of output voltage are very little, only need very little filter capacitor, and it is very little that its output voltage ripple and current ripples just can reach.
The withstand voltage of the switching tube of semi-bridge switching voltage regulator is lower.Can reduce half than inverse-excitation type positive activation type single tube output switch power source to the requirement of withstand voltage of switching device to the requirement of withstand voltage of two switching devices.Because, the operating voltage of two switching devices of semi-bridge switching voltage regulator only has half of input power Ui, its the highest withstand voltage operating voltage and back electromotive force sum of equaling, approximately be the twice of supply voltage, this result just in time is withstand voltage half of inverse-excitation type positive activation type single tube output switch power source switching device.Therefore, semi-bridge switching voltage regulator is applicable to the higher occasion of input voltage, and general line voltage is the preferred semi-bridge switching voltage regulator circuit of Switching Power Supply of AC 220 V power supply.
Because Switching Power Supply of the present invention has been used the automatic voltage regulation circuit, so that can work under wider voltage.
Claims (1)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110034755 CN102111009B (en) | 2011-01-27 | 2011-01-27 | Battery charger circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110034755 CN102111009B (en) | 2011-01-27 | 2011-01-27 | Battery charger circuit |
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| CN102111009A CN102111009A (en) | 2011-06-29 |
| CN102111009B true CN102111009B (en) | 2013-01-16 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 201110034755 Active CN102111009B (en) | 2011-01-27 | 2011-01-27 | Battery charger circuit |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105471059A (en) * | 2015-12-17 | 2016-04-06 | 重庆五福科技有限公司 | Universal charger for small gasoline engine generator |
| CN108565911B (en) * | 2018-03-15 | 2024-06-11 | 深圳市爱克斯达电子有限公司 | Charger |
| CN109904913B (en) * | 2019-03-20 | 2021-01-15 | 深圳市创芯微微电子有限公司 | A charging device and its fast charging circuit |
| CN112953232A (en) * | 2021-01-22 | 2021-06-11 | 江苏汇能科技股份有限公司 | DC conversion power supply |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7550951B2 (en) * | 2006-10-03 | 2009-06-23 | Asian Power Devices Inc. | Two-step battery charger |
| US9716403B2 (en) * | 2008-11-25 | 2017-07-25 | Semiconductor Components Industries, Llc | Battery charger circuit for changing between modes during operation based on temperature and battery voltage and method therefor |
| CN201663471U (en) * | 2009-11-12 | 2010-12-01 | 中山市鸿泰电子有限公司 | A battery charging device |
| CN202043051U (en) * | 2011-01-27 | 2011-11-16 | 卫斌鹏 | A half-bridge dual-tube switching power supply |
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Owner name: WEI BINPENG JINCHENG POWER SUPPLY COMPANY, STATE G Effective date: 20131211 Owner name: STATE ELECTRIC NET CROP. Free format text: FORMER OWNER: WEI BINPENG Effective date: 20131211 |
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Free format text: CORRECT: ADDRESS; FROM: 048103 JINCHENG, SHAANXI PROVINCE TO: 100031 XICHENG, BEIJING |
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Effective date of registration: 20131211 Address after: 100031 Xicheng District West Chang'an Avenue, No. 86, Beijing Patentee after: State Grid Corporation of China Patentee after: Wei Binpeng Patentee after: Jincheng Power Supply Company, State Grid Shanxi Electric Power Company Address before: Yangcheng County in Shanxi province 048103 Jincheng city run town Wangcun Village Patentee before: Wei Binpeng |