CN204376465U - Electric-vehicle-mounted digital charger - Google Patents
Electric-vehicle-mounted digital charger Download PDFInfo
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- CN204376465U CN204376465U CN201520009836.8U CN201520009836U CN204376465U CN 204376465 U CN204376465 U CN 204376465U CN 201520009836 U CN201520009836 U CN 201520009836U CN 204376465 U CN204376465 U CN 204376465U
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Abstract
The utility model relates to a kind of electric-vehicle-mounted digital charger, and described charger comprises: inverse-excitation type switch power-supply AC-DC circuit, peak voltage absorption circuit, sampling feedback circuit, output constant current constant voltage circuit; Wherein, inverse-excitation type switch power-supply AC-DC circuit is delivery of electrical energy main circuit, this circuit has with peak voltage absorption circuit, sampling feedback circuit, output constant current constant voltage circuit respectively and is connected, and the technical scheme that the utility model provides has the advantage realizing the unprecedented application of DC-DC conversion with AC-DC circuit topology.
Description
Technical field
The utility model belongs to electric automobiles, particularly relates to a kind of electric-vehicle-mounted digital charger.
Background technology
Electric motor car, i.e. electric bicycle and battery-operated motor cycle, refer to using storage battery as supplementary energy on the basis of ordinary bicycle, the Personal Transporter of the electromechanical integration of the control members such as motor, controller, storage battery, handle brake lever and Displaying Meter system has been installed.Electric motor car develop rapidly, use electric motor car user increasing, electric motor car has huge mobile power supply capacity.
In prior art solutions, find that the scheme of prior art exists following technical problem:
The electric motor car that prior art provides cannot provide vehicle-mounted charge function, this is for very inconvenient user, such as courier, take out deliveryman, peasant household to work in ground by bike etc. the electric motor car travel time longer time, the frequency of utilization of the equipment such as mobile phone is very high, adding the increase of smart mobile phone power consumption, battery drain is faster, so now in the urgent need to a kind of digital charger that can carry out electric-vehicle-mounted charging at any time.
Utility model content
The object of the utility model embodiment is to provide a kind of electric-vehicle-mounted digital charger, is intended to solve the electric motor car of prior art and cannot carries out vehicle-mounted charge and AC-DC circuit topology and cannot realize the problem that low voltage DC-DC converts.
The utility model embodiment is achieved in that provides a kind of electric-vehicle-mounted digital charger, and described charger comprises: inverse-excitation type switch power-supply AC-DC circuit, peak voltage absorption circuit, sampling feedback circuit, output constant current constant voltage circuit; Wherein,
Optionally, described charger specifically comprises: input protective tube, resistance, electric capacity, transformer, diode, bridge rectifier, field effect transistor, photoelectrical coupler, loop Current-type PWM Controller, built-in 2.5V benchmark operational amplifier; Wherein,
F1 is input protective tube, and its effect is the connection that late-class circuit disconnects charger circuit and external battery of electric vehicle power supply when occurring that electric fault causes flowing through its electric current overload; BD1 is bridge rectifier, and effect is the direct voltage output direct voltage input not fixing positive-negative polarity being changed into fixing positive-negative polarity, realizes inputting the function regardless of both positive and negative polarity with this; U1 is loop Current-type PWM Controller, and effect produces pwm signal to drive field effect transistor Q1 to work on off state and complete machine overcurrent protection, overvoltage protection, overload protection, overheat protector, the controls such as duty ratio modulation; U3 is built-in 2.5V benchmark operational amplifier, effect gathers output current, voltage signal, the comparative result of process and inner 2.5V reference voltage, photoelectrical coupler U2 is carried out to the control of the conducting degree of depth, thus the duty ratio of indirect control U1, make output voltage and electric current remain at the steady state of setting.
Operation principle is as follows:
IN1 and IN2 input terminal access electric motor car charge/discharge mouth, obtain battery of electric vehicle to provide and do not fix positive-negative polarity 30-120V DC-voltage supply, this voltage is transformed into fixing positive-negative polarity 30-120V direct voltage output to primary part circuit supply by bridge rectifier BD1, after powering on, starting resistance R6 first works, the fixing positive-negative polarity 30-120V that bridge rectifier BD1 exports is charged to VCC filter capacitor C5 by R6 generation current, when the voltage on C5 is charged to 16.5V, U1 starts working (the thresholding starting resistor that 16.5V is U1), after U1 starts working its 6 pin output duty cycle be 0.35 50KHZ square-wave pulse signal make Q1 with the continuous turn-on and turn-off of 50KHZ frequency of duty ratio 0.35 by R7 and D3, during Q1 conducting, armature winding 2 and 1 pin of high frequency transformer T1 starts energy storage, when Q1 turns off, primary winding is to secondary winding and AUX winding charge, AUX obtain electric after be rectified into low frequency pulsating direct voltage by D2, this direct voltage is through electric capacity C5 filtering, C2 goes to disturb the rear 5 pin VDD to U1 to power.
Low frequency pulsating direct voltage is rectified into by D4 after secondary winding obtains 50KHZ high-frequency pulse voltage, this pulsating dc voltage becomes level and smooth pure direct voltage to U2A after electric capacity C6 filtering, U3 powers and provides electric energy to output port, while providing electric energy to output port, U3 can detect output voltage and electric current in real time, if not in setting range, U3 can signal and the U2A conducting degree of depth is changed, after the U2A conducting degree of depth changes, its receiving terminal U2B can change the 2 pin voltages of U1, when the 2 pin voltages of U1 change, its inner meeting synchronous adjustment Q1 conducting duty ratio make output remain stable.
Except the above-mentioned element task flow process mentioned, 2 pin and 4 of U1 are continuous testing circuit parameters after the power-up, when a certain item argument exceeds setting range, U1 can automatically make corresponding adjustment output is remained 5V/1A charges to digital product.
In the utility model embodiment, the technical scheme that the utility model provides has the advantage realizing the unprecedented application of DC-DC conversion with AC-DC circuit topology.
Accompanying drawing explanation
The circuit block diagram of the electric-vehicle-mounted digital charger that Fig. 1 provides for the utility model;
The circuit theory diagrams of the electric-vehicle-mounted digital charger that Fig. 2 provides for the utility model.
Embodiment
In order to make the purpose of this utility model, technical scheme and advantage clearly understand, below in conjunction with drawings and Examples, the utility model is further elaborated.Should be appreciated that specific embodiment described herein only in order to explain the utility model, and be not used in restriction the utility model.
The utility model embodiment provides a kind of electric-vehicle-mounted digital charger, this charger as shown in Figure 1, comprise: inverse-excitation type switch power-supply AC-DC circuit, peak voltage absorption circuit, sampling feedback circuit, output constant current constant voltage circuit, wherein, inverse-excitation type switch power-supply AC-DC circuit is delivery of electrical energy main circuit, and this circuit has with peak voltage absorption circuit, sampling feedback circuit, output constant current constant voltage circuit respectively and is connected.
The technical scheme that the utility model provides provides an onboard charger in electric motor car, so it has the advantage that electric-vehicle-mounted can be allowed to charge.
Optionally, above-mentioned charger specifically comprises: input protective tube, resistance, electric capacity, transformer, diode, bridge rectifier, field effect transistor, photoelectrical coupler, loop Current-type PWM Controller, built-in 2.5V benchmark operational amplifier, wherein,
F1 is input protective tube, and its effect is the connection that late-class circuit disconnects charger circuit and external battery of electric vehicle power supply when occurring that electric fault causes flowing through its electric current overload; BD1 is bridge rectifier, and effect is the direct voltage output direct voltage input not fixing positive-negative polarity being changed into fixing positive-negative polarity, realizes inputting the function regardless of both positive and negative polarity with this; U1 is loop Current-type PWM Controller, and effect produces pwm signal to drive field effect transistor Q1 to work on off state and complete machine overcurrent protection, overvoltage protection, overload protection, overheat protector, the controls such as duty ratio modulation; U3 is built-in 2.5V benchmark operational amplifier, effect gathers output current, voltage signal, the comparative result of process and inner 2.5V reference voltage, photoelectrical coupler U2 is carried out to the control of the conducting degree of depth, thus the duty ratio of indirect control U1, make output voltage and electric current remain at the steady state of setting.
This charger as shown in Figure 2, specifically comprises: input protective tube, resistance, electric capacity, transformer, diode, bridge rectifier, field effect transistor, photoelectrical coupler, loop Current-type PWM Controller, built-in 2.5V benchmark operational amplifier;
Primary circuit side connection features: the two ends of input protective tube F1 are held with the AC inputting IN1 port and bridge rectifier BD1 respectively and are connected; The DC end of bridge rectifier BD1 is connected with one end of high frequency transformer T1 armature winding 1 pin, starting resistance R6, absorption resistance R1, Absorption Capacitance C1; 1 pin of loop Current-type PWM Controller U1 connects elementary ground wire; 2 pin of U1 connect the phototriode pipe collector of photoelectrical coupler U2B and one end of low-pass filtering electric capacity C3; 3 pin of U1 connect one end of pulse frequency setting resistance R2; One end of electric capacity C4 in the 4 pin connection peak currents detection RC network of U1 and one end of resistance R4; 5 pin of U1 connect the other end of starting resistance R6 and one end of VCC filter network C5 and R5, and 6 pin of U1 connect the one end driving resistance R7 and the negative electrode turning off diode D3 fast, and the other end of R7 is all connected with the grid of field effect transistor Q1 with the positive level of D3; Field effect transistor Q1 drain electrode is connected to the positive level of high frequency transformer T1 armature winding 2 pin and absorption diode D1; Absorption diode D1 negative electrode is connected with the other end of R1, C1; Peak current detects resistance R3A, R3B posterior end in parallel and connects elementary ground wire, and upper end connects the source electrode of field effect transistor Q1 and the other end of resistance R4; AUX winding 4 pin of high frequency transformer T1 connects elementary ground wire, and 3 pin of high frequency transformer T1 connect VCC rectifier diode D2 sun level; The negative electrode of rectifier diode D2 is connected with the other end of resistance R5;
Circuit secondary side connection features: high frequency transformer T1 secondary winding 7 pin connects secondary ground wire, 5 pin of T1 connect output rectifier diode D4 sun level; Output filter capacitor C6 is connected secondary ground wire with the other end exporting high-frequency suppressing electric capacity C7, one end of C6 with C7 is connected 1 pin exporting rectifier diode D4 negative electrode and output port USB1; Output electric current measure resistance R8A is connected secondary ground wire with left end after R8B parallel connection, and right-hand member connects 4 pin of output port USB1 and one end of feedback resistance R13; 2 pin of output port USB1 and 3 pin short circuits; 1 pin and the output voltage of built-in 2.5V benchmark operational amplifier U3 detect resistance R10, R11 and negative feedback resistor R12 and are connected common point and connect; 2 pin and the output voltage of U3 detect resistance R10 and R8A, R8B parallel network right-hand member, 4 pin of output port USB1, feedback resistance R13 are connected common point and connect; 3 pin of U3 are connected common point with current-limiting resistance R9 and C8, C9 and connect; 4 pin of U3 connect secondary ground wire, and 5 pin of U3 are connected with the other end of the other end of feedback resistance R13 and negative feedback resistor R14; 6 pin and the output voltage of U3 detect resistance R11, photoelectrical coupler U2A light-emitting diode positive pole, export rectifier diode D4 negative pole, output filter capacitor C6 and export high-frequency suppressing electric capacity C7,1 pin of output port USB1 is connected common point and connects; Photoelectrical coupler light-emitting diode negative pole is connected with current-limiting resistance R9 one end; The other end of negative feedback resistor R12 is connected with the other end of negative feedback electric capacity C8; One end of negative feedback resistor R14 is connected with the other end of negative feedback electric capacity C9.
The foregoing is only preferred embodiment of the present utility model; not in order to limit the utility model; all do within spirit of the present utility model and principle any amendment, equivalent to replace and improvement etc., all should be included within protection range of the present utility model.
Claims (2)
1. an electric-vehicle-mounted digital charger, is characterized in that, described charger comprises: inverse-excitation type switch power-supply AC-DC circuit, peak voltage absorption circuit, sampling feedback circuit, output constant current constant voltage circuit; Wherein, inverse-excitation type switch power-supply AC-DC circuit is delivery of electrical energy main circuit, and this main circuit is connected with peak voltage absorption circuit, sampling feedback circuit, output constant current constant voltage circuit respectively.
2. charger according to claim 1, it is characterized in that, described charger specifically comprises: input protective tube, resistance, electric capacity, transformer, diode, bridge rectifier, field effect transistor, photoelectrical coupler, loop Current-type PWM Controller, built-in 2.5V benchmark operational amplifier;
Primary circuit side connection features: the two ends of input protective tube F1 are held with the AC inputting IN1 port and bridge rectifier BD1 respectively and are connected; The DC end of bridge rectifier BD1 is connected with one end of high frequency transformer T1 armature winding 1 pin, starting resistance R6, absorption resistance R1, Absorption Capacitance C1; 1 pin of loop Current-type PWM Controller U1 connects elementary ground wire; 2 pin of U1 connect the phototriode pipe collector of photoelectrical coupler U2-B and one end of low-pass filtering electric capacity C3; 3 pin of U1 connect one end of pulse frequency setting resistance R2; One end of electric capacity C4 in the 4 pin connection peak currents detection RC network of U1 and one end of resistance R4; 5 pin of U1 connect the other end of starting resistance R6 and one end of VCC filter network C5 and R5, and 6 pin of U1 connect the one end driving resistance R7 and the negative electrode turning off diode D3 fast, and the other end of R7 is all connected with the grid of field effect transistor Q1 with the positive level of D3; Field effect transistor Q1 drain electrode is connected to the positive level of high frequency transformer T1 armature winding 2 pin and absorption diode D1; Absorption diode D1 negative electrode is connected with the other end of R1, C1; Peak current detects resistance R3A, R3B posterior end in parallel and connects elementary ground wire, and upper end connects the source electrode of field effect transistor Q1 and the other end of resistance R4; AUX winding 4 pin of high frequency transformer T1 connects elementary ground wire, and 3 pin of high frequency transformer T1 connect VCC rectifier diode D2 sun level; The negative electrode of rectifier diode D2 is connected with the other end of resistance R5;
Circuit secondary side connection features: high frequency transformer T1 secondary winding 7 pin connects secondary ground wire, 5 pin of T1 connect output rectifier diode D4 sun level; Output filter capacitor C6 is connected secondary ground wire with the other end exporting high-frequency suppressing electric capacity C7, one end of C6 with C7 is connected 1 pin exporting rectifier diode D4 negative electrode and output port USB1; Output electric current measure resistance R8A is connected secondary ground wire with left end after R8B parallel connection, and right-hand member connects 4 pin of output port USB1 and one end of feedback resistance R13; 2 pin of output port USB1 and 3 pin short circuits; 1 pin and the output voltage of built-in 2.5V benchmark operational amplifier U3 detect resistance R10, R11 and negative feedback resistor R12 and are connected common point and connect; 2 pin and the output voltage of U3 detect resistance R10 and R8A, R8B parallel network right-hand member, 4 pin of output port USB1, feedback resistance R13 are connected common point and connect; 3 pin of U3 are connected common point with current-limiting resistance R9 and C8, C9 and connect; 4 pin of U3 connect secondary ground wire, and 5 pin of U3 are connected with the other end of the other end of feedback resistance R13 and negative feedback resistor R14; 6 pin and the output voltage of U3 detect resistance R11, photoelectrical coupler U2-A light-emitting diode positive pole, export rectifier diode D4 negative pole, output filter capacitor C6 and export high-frequency suppressing electric capacity C7,1 pin of output port USB1 is connected common point and connects; Photoelectrical coupler light-emitting diode negative pole is connected with current-limiting resistance R9 one end; The other end of negative feedback resistor R12 is connected with the other end of negative feedback electric capacity C8; One end of negative feedback resistor R14 is connected with the other end of negative feedback electric capacity C9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520009836.8U CN204376465U (en) | 2015-01-05 | 2015-01-05 | Electric-vehicle-mounted digital charger |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201520009836.8U CN204376465U (en) | 2015-01-05 | 2015-01-05 | Electric-vehicle-mounted digital charger |
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| CN204376465U true CN204376465U (en) | 2015-06-03 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201520009836.8U Withdrawn - After Issue CN204376465U (en) | 2015-01-05 | 2015-01-05 | Electric-vehicle-mounted digital charger |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104917222A (en) * | 2015-01-05 | 2015-09-16 | 惠州市英盟科技有限公司 | Electric-vehicle vehicle-mounted digital charger |
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2015
- 2015-01-05 CN CN201520009836.8U patent/CN204376465U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104917222A (en) * | 2015-01-05 | 2015-09-16 | 惠州市英盟科技有限公司 | Electric-vehicle vehicle-mounted digital charger |
| CN104917222B (en) * | 2015-01-05 | 2018-08-10 | 惠州市英盟科技有限公司 | Electric-vehicle-mounted digital charger |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20170214 Address after: 516000 Guangdong Province, Huizhou city Huicheng District Lek Lin Zhen Ying Guang Cun Patentee after: Ying Meng Science and Technology Ltd. of Huizhou City Patentee after: Tang Ze brake (Tianjin) Co., Ltd. Address before: 516000 Guangdong Province, Huizhou city Huicheng District Lek Lin Zhen Ying Guang Cun Patentee before: Ying Meng Science and Technology Ltd. of Huizhou City |
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| TR01 | Transfer of patent right |
Effective date of registration: 20180619 Address after: 516000 Ying Guang village, leing Town, Huicheng District, Huizhou, Guangdong, China Patentee after: Ying Meng Science and Technology Ltd. of Huizhou City Address before: 516000 Ying Guang village, leing Town, Huicheng District, Huizhou, Guangdong, China Co-patentee before: Tang Ze brake (Tianjin) Co., Ltd. Patentee before: Ying Meng Science and Technology Ltd. of Huizhou City |
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| TR01 | Transfer of patent right | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20150603 Effective date of abandoning: 20180810 |
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| AV01 | Patent right actively abandoned |