CN203632334U - A multi-branch feedback charger circuit - Google Patents
A multi-branch feedback charger circuit Download PDFInfo
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- CN203632334U CN203632334U CN201320894337.2U CN201320894337U CN203632334U CN 203632334 U CN203632334 U CN 203632334U CN 201320894337 U CN201320894337 U CN 201320894337U CN 203632334 U CN203632334 U CN 203632334U
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Abstract
The utility model relates to a multi-branch feedback charger circuit. The charger circuit comprises a power converting circuit and a closed loop feedback circuit. The closed loop feedback circuit comprises a feedback control unit, a first feedback branch, a second feedback branch and a feedback branch switching device. The first feedback branch comprises a voltage protection module. The second feedback branch comprises a microcontroller, a current detector and a voltage detector. The voltage protection module, the current detector and the voltage detector are separately connected with the power converting circuit. Output terminals of the current detector and the voltage detector are separately connected with the microcontroller. Output terminals of the voltage protection module and the microcontroller are separately connected with the feedback control unit. The feedback control unit is connected with the power converting circuit. The microcontroller is connected with the voltage protection module through the feedback branch switching device. According to the multi-branch feedback charger circuit, under a condition that the microcontroller is not working, problems of large currents output by a charger and long continuous time of the large currents are avoided.
Description
Technical field
The utility model relates to digital control charger technical field, relates in particular to a kind of multiple branch circuit feedback charger circuit.
Background technology
Common digital control charger on market, as TL431(controllable accurate source of stable pressure) coordinate the charger of microcontroller, such charger generally comprises constant current, constant voltage and three kinds of charge modes of floating charge in the time of charging.If the battery charging as 48V17AH to specification take this charger, visible concrete charging process as described below, if the terminal voltage of battery is lower, in access charger, be operated in the pattern of constant current charge, be that output current of charger is constant, be generally 2.5A, output voltage slowly rises along with continuing of charging, until output voltage reaches set point 58V, enter constant voltage charge pattern, at this time, it is constant that the output voltage of charger maintains 58V, along with the carrying out of charging, the electric weight of battery rises gradually, the terminal voltage that is battery is increasing, therefore the output current of system is just more and more less, in the time that charging current drops to 500mA, system is adjusted to output voltage 55V and is remained unchanged by 58V, enter floating charge pattern, until charging finishes.The physical circuit of this charger is shown in Fig. 1, specifically comprise circuit for power conversion 2 ' and closed-loop feedback circuit, closed-loop feedback circuit comprises former limit controller 1 ', current detector 8 ', microcontroller 5 ', level translator 7 ', voltage controller 6 ', low pass filter 4 ' and photoelectrical coupler 3 '.Closed-loop feedback circuit, according to the output voltage of circuit for power conversion 2 ' and output current, provides feedback signal, makes the output voltage of circuit for power conversion 2 ' constant.Wherein, level translator 7 ' by output voltage stabilization at 58V or 55V, i.e. constant voltage or floating charge pattern.Microcontroller 5 ' is mainly to gather output current by current detector 8 ', if system output current is less than 500mA, control level transducer 7 ' by output voltage stabilization at 55V; If system output current is at 500mA～2.5A, control level transducer 7 ' by output voltage stabilization at 58V.
Above-mentioned charger is under constant voltage or floating charge pattern, and microcontroller 5 ' can not produce PWM(pulse width modulation) feedback signal, the feedback of circuit for power conversion 2 ' can only be completed by voltage controller 6 '.When the output current sampling when current detector 8 ' is greater than 2.5A, microcontroller 5 ' just produces PWM feedback signal, this signal becomes voltage signal more stably after low pass filter 4 ', this voltage signal superposes through one-way conduction device output and voltage feedback signal again, the feedback signal total amount of importing voltage controller 6 ' into is increased, thereby reduce output voltage values, finally reach the effect that maintains constant output current, i.e. constant current charging mode.
This charging circuit is when system just powers on, microcontroller 5 ' does not complete and starts and software initialization process, can not carry out signal feedback, so, the output voltage of circuit for power conversion 2 ' is 55V or 58V, output voltage is according to the default IO state difference of microcontroller 5 ', and voltage is different.With reference to the voltage and current waveform of Fig. 2, take 55V as example, if load battery equivalent resistance is 15 Ω, output current is 3.67A, exceeds a lot, if battery electric quantity is less than 2.5A rated value, its output current can be larger, and load battery life and performance are had to considerable influence.And the duration of this large electric current is directly depended on start-up time and the arithmetic speed of microcontroller 5 ', more difficult assurance.In addition, if this system runs into the idle situation of microcontroller 5 ' in running, in the scope allowing at power, its output voltage can maintain 55V always, if load battery equivalent resistance is 15 Ω, within very long a period of time, charging current all can maintain 3.67A, its voltage and current waveform is with reference to Fig. 3, and this can have a strong impact on battery life and performance, battery bulge even occurs, damage even blast; Also have, because the Voltage Feedback of this system is realized by analog circuit, microcontroller 5 ' does not gather output voltage and regulates in real time, so need extra feedback control circuit to carry out closed-loop control, generally adopt the feedback circuit structure take TL431 as core, cost is higher, and circuit devcie is more.
Summary of the invention
Technical problem to be solved in the utility model is to exist because of microcontroller restriction start-up time or the factor such as do not work causes the output current of charger large, the long problem of large current duration for existing charger, provide a kind of at microcontroller not under working condition, can limit charging output current excessive, and lower-cost multiple branch circuit feedback charger circuit.
For addressing the above problem, a kind of technical scheme of the present utility model is:
A kind of multiple branch circuit feedback charger circuit, comprise circuit for power conversion and the closed-loop feedback circuit being attached thereto, it is characterized in that, described closed-loop feedback circuit comprises feedback control unit, be used for the first feedback branch of power ratio control change-over circuit output voltage and the second feedback branch for power ratio control change-over circuit output voltage and output current, feedback control unit is connected with the second feedback branch with the first feedback branch respectively, between the first feedback branch and the second feedback branch, be connected with the feedback branch switch opening and closing for controlling the first feedback branch, described the first feedback branch comprises the voltage protection module for detection of circuit for power conversion output voltage output feedback signal, the second feedback branch comprises microcontroller, for detection of the current detector of circuit for power conversion output current with for detection of the voltage detector of circuit for power conversion output voltage, described voltage protection module, the input of current detector and voltage detector is connected with the output of circuit for power conversion respectively, the output of current detector and voltage detector is connected with microcontroller respectively, the output of voltage protection module and microcontroller is connected with feedback control unit respectively, feedback control unit is connected with circuit for power conversion, microcontroller is connected with voltage protection module by feedback branch switch, described voltage protection module produces the first feedback signal and outputs in feedback control unit according to the output voltage of circuit for power conversion, feedback control unit reception & disposal the first feedback signal, and by signal feedback after treatment in circuit for power conversion, the electric current that microcontroller detects according to current detector and voltage detector and voltage produce and export second and feeds back signal in feedback control unit, feedback control unit reception & disposal the second feedback signal, and by signal feedback after treatment in circuit for power conversion, simultaneously microcontroller outputs a control signal to feedback branch switch.
Preferably; described feedback control unit comprises connected successively low pass filter, feedback signal transport module and former limit controller; low pass filter is connected with microcontroller; feedback signal transport module is connected with voltage protection module; low pass filter filters the second feedback signal of microcontroller output; feedback signal transport module receives the first feedback signal of the second feedback signal or voltage protection module output; former limit controller receives and processes the output signal of feedback signal transport module, and signal after treatment is outputed in circuit for power conversion.
Preferably, described feedback signal transport module is photoelectrical coupler.
Preferably; described voltage protection module comprises triode Q1, resistance R 1 and voltage-stabiliser tube D1; the base stage of triode Q1 is connected with the forward conduction end of voltage-stabiliser tube D1 by resistance R 1; the grounded emitter of triode Q1; the collector electrode of triode Q1 is connected with the input of feedback signal transport module; the backward end of voltage-stabiliser tube D1 is connected with the output of circuit for power conversion, and the base stage of triode Q1 is connected with the output of feedback branch switch.
Preferably, described voltage protection module comprises three-terminal voltage-stabilizing pipe Q3, resistance R 4, resistance R 5 and capacitor C 1, the negative electrode of three-terminal voltage-stabilizing pipe Q3 is connected with the output of circuit for power conversion with resistance R 4 by capacitor C 1, the junction of capacitor C 1 and resistance R 4 is connected with resistance R 5, the other end ground connection of resistance R 5, the plus earth of three-terminal voltage-stabilizing pipe Q3, the reference utmost point of three-terminal voltage-stabilizing pipe Q3 is connected with the junction of resistance R 4 with capacitor C 1, the reference utmost point of three-terminal voltage-stabilizing pipe Q3 is also connected with the output of feedback branch switch, the negative electrode of three-terminal voltage-stabilizing pipe Q3 is connected with the input of feedback signal transport module.
Preferably; described feedback branch switch comprises triode Q2, resistance R 2 and resistance R 3, and the collector electrode of triode Q2 is connected with voltage protection module, the grounded emitter of triode Q2; the base stage of triode Q2 is connected with microcontroller by resistance R 2, and the base stage of triode Q2 is by resistance R 3 ground connection.
Be compared to prior art, multiple branch circuit feedback charger circuit of the present utility model adopts two bars feedback branches to come output current and the output voltage of feedback regulation charger, to switch the concrete condition of different signal feedback branch road reply chargers under different working modes, eliminate microcontroller in start-up course, the large electric current that charging circuit produces, eliminate in prior art, the lasting large electric current producing because of microcontroller fault, reduce the damage of large electric current to rechargeable battery, avoid battery even to explode because of the bulge that continues large electric current and cause, improve security performance, on the other hand, the feedback branch that the utility model adopts, cost is more cheap.
Accompanying drawing explanation
Fig. 1 is the schematic block circuit diagram of charger in prior art.
Fig. 2 be in prior art charger under 15 Ω loading conditions, output voltage current waveform figure when charger powers on.
Fig. 3 be in prior art charger under 15 Ω loading conditions, the output voltage current waveform figure that charger runs into microcontroller while not working.
Fig. 4 is the schematic block circuit diagram of the utility model multiple branch circuit feedback charger circuit.
Fig. 5 is the circuit theory diagrams of the utility model multiple branch circuit feedback charger circuit.
Fig. 6 is that the utility model multiple branch circuit feeds back charger circuit under 15 Ω loading conditions, output voltage current waveform figure when charger powers on.
Fig. 7 be the utility model multiple branch circuit feedback charger circuit under 15 Ω loading conditions, the output voltage current waveform figure that charger runs into microcontroller while not working.
Fig. 8 is the circuit theory diagrams of the another kind of execution mode of the utility model multiple branch circuit feedback charger circuit.
Embodiment
Further describe the utility model below in conjunction with drawings and Examples, but protection range of the present utility model is not limited to this.
With reference to Fig. 4, multiple branch circuit feedback charger circuit of the present utility model, comprise circuit for power conversion 2 and closed-loop feedback circuit, closed-loop feedback circuit is used for providing feedback signal, and the output current of regulating power change-over circuit 2 and output voltage, closed-loop feedback circuit is connected with circuit for power conversion 2, realizes closed signal feedback.Wherein, closed-loop feedback circuit comprises feedback control unit, the first feedback branch, the second feedback branch and feedback branch switch, the input of the first feedback branch and the second feedback branch is connected with the output of circuit for power conversion 2, the first feedback branch is connected with the output of the second feedback branch and the input of feedback control unit, feedback branch switch is connected between the first feedback branch and the second feedback branch, feedback control unit is connected with circuit for power conversion 2, so that final feedback signal to be provided.
Described the first feedback branch comprises voltage protection module 6, and voltage protection module 6, according to the difference of circuit for power conversion 2 output voltages, produces the first different feedback signals, with regulation output voltage.The second feedback branch comprises microcontroller 5, current detector 8 and voltage detector 9, current detector 8 is for detection of the output current of circuit for power conversion 2, voltage detector 9 is for detection of the output voltage of circuit for power conversion 2, the data that microcontroller 5 detects according to current detector 8 and voltage detector 9, produce corresponding PWM feedback signal, i.e. the second feedback signal.The input of described voltage protection module 6, current detector 8 and voltage detector 9 is connected with the output of circuit for power conversion 2 respectively; the output of current detector 8 and voltage detector 9 is connected with microcontroller 5 respectively; the output of voltage protection module 6 and microcontroller 5 is connected with feedback control unit respectively; microcontroller 5 is connected with voltage protection module 6 by feedback branch switch 7; the low and high level that feedback branch switch 7 is exported according to microcontroller 5, controls voltage protection module 6 and produces or do not produce feedback effect.
Described feedback control unit comprises connected successively low pass filter 4, feedback signal transport module 3 and former limit controller 1; low pass filter 4 is connected with microcontroller 5; feedback signal transport module 3 is connected with voltage protection module 6, and former limit controller 1 is connected with circuit for power conversion 2.Low pass filter 4 is for filtering into pwm signal voltage signal stably; the first feedback signal that feedback signal transport module 3 produces the signal of low pass filter 4 outputs or voltage protection module 6 transfers in former limit controller 1, as the input signal of former limit controller 1.Wherein, feedback signal transport module 3 is photoelectrical coupler.
With reference to Fig. 5; described voltage protection module 6 comprises triode Q1, resistance R 1 and voltage-stabiliser tube D1; the base stage of triode Q1 is connected with the forward conduction end of voltage-stabiliser tube D1 by resistance R 1; the grounded emitter of triode Q1; the collector electrode of triode Q1 is connected with the input of feedback signal transport module 3; the backward end of voltage-stabiliser tube D1 is connected with the output of circuit for power conversion, and the base stage of triode Q1 is connected with the output of feedback branch switch.Feedback branch switch 7 comprises triode Q2, resistance R 3 and resistance R 2, the collector electrode of triode Q2 is connected with the base stage of triode Q1, the grounded emitter of triode Q2, the base stage of triode Q2 is connected with microcontroller 5 by resistance R 2, and the base stage of triode Q2 is by resistance R 3 ground connection.Circuit for power conversion 2, low pass filter 4, current detector 8 and voltage detector 9 all adopt common technique means of the prior art, do not repeat them here.
The charging process of multiple branch circuit feedback charger of the present utility model, comprises the steps:
Step a: charger powers on, circuit for power conversion 2 accesses civil power, and now, microcontroller 5 does not complete power-up initializing and program initialization, enters beginning init state, and the output voltage of circuit for power conversion 2 progressively raises;
Step b: the first feedback branch enters operating state, it is the output voltage of voltage protection module 6 real-time detection power change-over circuits 2, in the time detecting that the output voltage of circuit for power conversion 2 is greater than minimum voltage, voltage protection module 6 is exported first and is fed back signal in the former limit controller 1 of feedback control unit, feedback control unit reduces the output voltage of circuit for power conversion 2 according to the first feedback signal, make the output voltage of circuit for power conversion 2 be less than or equal to minimum voltage, thereby the output voltage of circuit for power conversion 2 is maintained to a smaller value, the product of the maximum charging current that described minimum voltage allows while being constant-current charging of battery to be charged corresponding equivalent resistance after fully discharging with battery to be charged, because minimum voltage value is less, even if load battery electric quantity is little, can not produce large electric current yet,
Step c: if microcontroller 5 enters normal operating conditions, enter steps d, otherwise, return to step b; The normal operating conditions of microcontroller 5 comprises the state that microcontroller initialization completes, and the abnormal restoring state of microcontroller.
Steps d: in the time of microcontroller 5 normal work, the second feedback branch is in running order, and microcontroller 5 outputs a control signal to feedback branch switch 7, closes the first feedback branch by feedback branch switch 7, and the first feedback branch does not participate in signal feedback;
Step e: microcontroller 5 is controlled output current and the output voltage of current detector 8 and voltage detector 9 Real-time Collection circuit for power conversion 2, and be transferred to processing in microcontroller 5 according to the output current collecting and output voltage, microcontroller 5 produces and exports the second feedback signal, be PWM feedback signal and export in low pass filter 4, this second feedback signal is filtered into voltage signal stably by low pass filter 4, feedback signal transport module 3 transfers to this second feedback signal isolation in former limit controller 1, finally feed back in circuit for power conversion 2, output current to circuit for power conversion 2 and output voltage carry out feedback regulation,
Step f: repeating step e, until charging finishes;
In above-mentioned charging process, if it is abnormal that microcontroller 5 occurs, appearance as unexpected in microcontroller 5 is not worked, now, enter step b, branch switch 7 will be opened the first feedback branch automatically, form a feedback procedure, make output voltage maintain again a lower value, thereby guarantee that microcontroller 5 is under work and working condition not, control charging output current that all can be stable.
Wherein, the product of the maximum charging current that minimum voltage allows while being constant-current charging of battery to be charged corresponding equivalent resistance after fully discharging with battery to be charged, the maximum charging current allowing when constant-current charging of battery to be charged is hereinafter referred to as maximum charging current.In battery charging process, the electric current allowing generally determines with the product of battery capacity and charging coefficient, and charging coefficient is generally 0.1-0.2, and the charging current allowing when constant-current charging of battery to be charged is 0.1C-0.2C, C is battery capacitor, and maximum charging current is 0.2C.But, based on considering of battery charging rate and useful life, the charging current while generally adopting 0.15C as constant current ".The battery that for example specification is 48V17AH, the charging current allowing when constant current charge is 1.7A-3.4A, maximum charging current is 3.4A, generally can adopt in actual use 2.5A to carry out constant current charge.
Battery take specification as 48V17AH is charged as example explanation effect of the present utility model below, and when supposing the system powers on, battery has passed through abundant electric discharge, and battery terminal voltage is lower, can regard its equivalent resistance as less, value 15 Ω.The maximum current allowing when constant-current charging of battery is 3.4A, and obtaining voltage according to V=I*R is 51V, and minimum voltage is 51V.As adopt 0.15C be 2.5A as constant current charge electric current, voltage is 37.5V.
Detect by the voltage and current in the time that step b powers on to the utility model charger, contrast Fig. 2 of the prior art simultaneously, can clearly find out the control effect of the utility model to output current and output voltage, specifically with reference to the output voltage current waveform figure of Fig. 6, under the effect of the first feedback branch, the output voltage of circuit for power conversion 2 is all stabilized in below 51V, and outputting current steadily, below 3.4A, has been eliminated the situation that has large electric current.
Run in the unexpected idle situation of microcontroller 5 at charger, by to its output voltage and current detecting, contrast Fig. 3 of the prior art simultaneously, can clearly find out the control effect of the utility model to output current and output voltage, specifically, with reference to the voltage and current waveform of Fig. 7, under the effect of the first feedback branch, the output voltage of circuit for power conversion 2 is all stabilized in below 51V, outputting current steadily, below 3.4A, has been eliminated the situation that has large electric current.
In sum, the utility model multiple branch circuit feedback charger contrasts the charger that common TL431 coordinates microcontroller, adopt two bars feedback branches to come output current and the output voltage of feedback regulation charger, to switch the concrete condition of different signal feedback branch road reply chargers under different working modes, eliminate microcontroller in start-up course, the large electric current that charging circuit produces, eliminate in prior art, the lasting large electric current producing because of microcontroller fault, reduce the damage of large electric current to rechargeable battery, avoid battery even to explode because of the bulge that continues large electric current and cause, improve security performance.Also saved the control chips such as traditional TL431, cost is cheaper.
With reference to Fig. 8, voltage protection module 6 in the utility model also can adopt TL431 of the prior art to complete, the physical circuit of above-mentioned voltage protection module is replaced to following circuit, this voltage protection module 6 comprises three-terminal voltage-stabilizing pipe Q3, resistance R 4, resistance R 5 and capacitor C 1, the negative electrode of three-terminal voltage-stabilizing pipe Q3 is connected with the output of circuit for power conversion with resistance R 4 by capacitor C 1, the junction of capacitor C 1 and resistance R 4 is connected with resistance R 5, the other end ground connection of resistance R 5, the plus earth of three-terminal voltage-stabilizing pipe Q3, the reference utmost point of three-terminal voltage-stabilizing pipe Q3 is connected with the junction of resistance R 4 with capacitor C 1, the reference utmost point of three-terminal voltage-stabilizing pipe Q3 is also connected with the collector electrode of triode Q2, the negative electrode of three-terminal voltage-stabilizing pipe Q3 is connected with the input of feedback signal transport module.Utilize TL431 of the prior art to complete the signal feedback of the first feedback branch, and in conjunction with the signal feedback that realizes the second feedback branch of microcontroller 5, can eliminate equally in prior art, because of the lasting large electric current that microcontroller fault produces, also reduce the damage of large electric current to rechargeable battery.
In above-mentioned explanation, all special instructions that do not add, all adopt technological means of the prior art.
Claims (6)
1. a multiple branch circuit feedback charger circuit, comprise circuit for power conversion and the closed-loop feedback circuit being attached thereto, it is characterized in that, described closed-loop feedback circuit comprises feedback control unit, be used for the first feedback branch of power ratio control change-over circuit output voltage and the second feedback branch for power ratio control change-over circuit output voltage and output current, feedback control unit is connected with the second feedback branch with the first feedback branch respectively, between the first feedback branch and the second feedback branch, be connected with the feedback branch switch opening and closing for controlling the first feedback branch, described the first feedback branch comprises the voltage protection module for detection of circuit for power conversion output voltage output feedback signal, the second feedback branch comprises microcontroller, for detection of the current detector of circuit for power conversion output current with for detection of the voltage detector of circuit for power conversion output voltage, described voltage protection module, the input of current detector and voltage detector is connected with the output of circuit for power conversion respectively, the output of current detector and voltage detector is connected with microcontroller respectively, the output of voltage protection module and microcontroller is connected with feedback control unit respectively, feedback control unit is connected with circuit for power conversion, microcontroller is connected with voltage protection module by feedback branch switch,
Described voltage protection module produces the first feedback signal and outputs in feedback control unit according to the output voltage of circuit for power conversion, feedback control unit reception & disposal the first feedback signal, and by signal feedback after treatment in circuit for power conversion; The electric current that microcontroller detects according to current detector and voltage detector and voltage produce and export second and feeds back signal in feedback control unit, feedback control unit reception & disposal the second feedback signal, and by signal feedback after treatment in circuit for power conversion, simultaneously microcontroller outputs a control signal to feedback branch switch.
2. multiple branch circuit feedback charger circuit according to claim 1, it is characterized in that, described feedback control unit comprises connected successively low pass filter, feedback signal transport module and former limit controller, low pass filter is connected with microcontroller, feedback signal transport module is connected with voltage protection module, low pass filter filters the second feedback signal of microcontroller output, feedback signal transport module receives the first feedback signal of the second feedback signal or voltage protection module output, former limit controller receives and processes the output signal of feedback signal transport module, and signal after treatment is outputed in circuit for power conversion.
3. multiple branch circuit feedback charger circuit according to claim 2, is characterized in that, described feedback signal transport module is photoelectrical coupler.
4. multiple branch circuit feedback charger circuit according to claim 1; it is characterized in that; described voltage protection module comprises triode Q1, resistance R 1 and voltage-stabiliser tube D1; the base stage of triode Q1 is connected with the forward conduction end of voltage-stabiliser tube D1 by resistance R 1; the grounded emitter of triode Q1; the collector electrode of triode Q1 is connected with the input of feedback signal transport module; the backward end of voltage-stabiliser tube D1 is connected with the output of circuit for power conversion, and the base stage of triode Q1 is connected with the output of feedback branch switch.
5. multiple branch circuit feedback charger circuit according to claim 1, it is characterized in that, described voltage protection module comprises three-terminal voltage-stabilizing pipe Q3, resistance R 4, resistance R 5 and capacitor C 1, the negative electrode of three-terminal voltage-stabilizing pipe Q3 is connected with the output of circuit for power conversion with resistance R 4 by capacitor C 1, the junction of capacitor C 1 and resistance R 4 is connected with resistance R 5, the other end ground connection of resistance R 5, the plus earth of three-terminal voltage-stabilizing pipe Q3, the reference utmost point of three-terminal voltage-stabilizing pipe Q3 is connected with the junction of resistance R 4 with capacitor C 1, the reference utmost point of three-terminal voltage-stabilizing pipe Q3 is also connected with the output of feedback branch switch, the negative electrode of three-terminal voltage-stabilizing pipe Q3 is connected with the input of feedback signal transport module.
6. according to the multiple branch circuit feedback charger circuit described in any one in claim 1-5; it is characterized in that; described feedback branch switch comprises triode Q2, resistance R 2 and resistance R 3; the collector electrode of triode Q2 is connected with voltage protection module; the grounded emitter of triode Q2; the base stage of triode Q2 is connected with microcontroller by resistance R 2, and the base stage of triode Q2 is by resistance R 3 ground connection.
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| CN201320894337.2U CN203632334U (en) | 2013-12-31 | 2013-12-31 | A multi-branch feedback charger circuit |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103701183A (en) * | 2013-12-31 | 2014-04-02 | 杭州士兰微电子股份有限公司 | Multi-branch circuit feedback charger circuit and charging method |
| CN105703418A (en) * | 2014-11-28 | 2016-06-22 | 中国科学院沈阳自动化研究所 | Unmanned helicopter emergency power supply charge control system |
| CN107508346A (en) * | 2017-08-28 | 2017-12-22 | 惠州Tcl移动通信有限公司 | Mobile terminal and charge control method and storage medium |
| EP3264566B1 (en) * | 2016-05-09 | 2020-04-15 | Guangdong Oppo Mobile Telecommunications Corp., Ltd. | Method for controlling output voltage and adaptor |
| CN113662650A (en) * | 2021-08-10 | 2021-11-19 | 苏州艾科脉医疗技术有限公司 | High voltage generating circuit for catheter and ablation tool |
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2013
- 2013-12-31 CN CN201320894337.2U patent/CN203632334U/en not_active Withdrawn - After Issue
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103701183A (en) * | 2013-12-31 | 2014-04-02 | 杭州士兰微电子股份有限公司 | Multi-branch circuit feedback charger circuit and charging method |
| CN103701183B (en) * | 2013-12-31 | 2015-09-30 | 杭州士兰微电子股份有限公司 | Multi-branch circuit feedback charger circuit and charging method |
| CN105703418A (en) * | 2014-11-28 | 2016-06-22 | 中国科学院沈阳自动化研究所 | Unmanned helicopter emergency power supply charge control system |
| CN105703418B (en) * | 2014-11-28 | 2018-01-23 | 中国科学院沈阳自动化研究所 | A kind of depopulated helicopter emergency power supply charge control system |
| EP3264566B1 (en) * | 2016-05-09 | 2020-04-15 | Guangdong Oppo Mobile Telecommunications Corp., Ltd. | Method for controlling output voltage and adaptor |
| CN107508346A (en) * | 2017-08-28 | 2017-12-22 | 惠州Tcl移动通信有限公司 | Mobile terminal and charge control method and storage medium |
| CN113662650A (en) * | 2021-08-10 | 2021-11-19 | 苏州艾科脉医疗技术有限公司 | High voltage generating circuit for catheter and ablation tool |
| CN113662650B (en) * | 2021-08-10 | 2024-01-23 | 苏州艾科脉医疗技术有限公司 | High voltage generating circuit for catheter and ablation instrument |
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