CN103441545A - Braking and boosting charging circuit of electric vehicle - Google Patents
Braking and boosting charging circuit of electric vehicle Download PDFInfo
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- CN103441545A CN103441545A CN2013103693996A CN201310369399A CN103441545A CN 103441545 A CN103441545 A CN 103441545A CN 2013103693996 A CN2013103693996 A CN 2013103693996A CN 201310369399 A CN201310369399 A CN 201310369399A CN 103441545 A CN103441545 A CN 103441545A
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Abstract
The invention discloses a braking and boosting charging circuit of an electric vehicle and belongs to the technical field of electric vehicles. The braking and boosting charging circuit of the electric vehicle comprises a battery, a controller, a three-phase motor, a three-phase rectifier bridge circuit, a boosting circuit and a control circuit. The battery is connected with the three-phase motor through the controller. The three-phase motor is connected with the boosting circuit through the three-phase rectifier bridge circuit. The boosting circuit is connected with the battery. The controller is connected with the boosting circuit through the control circuit. When the electric vehicle brakes, rotation energy of the three-phase motor is converted into electric energy which is used for charging the battery and thus, the cruising power of the battery is effectively improved and the number of charging times is reduced.
Description
Technical field
The present invention relates to a kind of brake boost charge circuit, specifically a kind of electric vehicle brake boost charge circuit, belong to the vehicle technology field.
Background technology
The driving control connection mode (as shown in Figure 1) of existing electric motor car is mainly " battery → controller → three phase electric machine ", along with social development and the people attention to energy-conserving and environment-protective, existing this single driving control connection mode can not reach energy savings, the purpose of protection of the environment; While normally travelling, the three phase electric machine of electric motor car is to supply with energy by battery, the band motor car wheel travels forward, when electric motor car in when brake, battery stops to the three phase electric machine supply of electrical energy, now three phase electric machine is that kinetic energy due to electric motor car itself is rotated further, and the energy of these rotations has been wasted owing to effectively utilizing all; The flying power of the battery of existing this driving control mode electric motor car is also lower simultaneously, need to electric motor car, be charged frequently, and the user is brought inconvenience.
Summary of the invention
The problem existed for above-mentioned prior art, the invention provides a kind of electric vehicle brake boost charge circuit, can be in the electric vehicle brake braking, convert the rotational energy of three phase electric machine to electric energy, battery is charged, effectively extended the flying power of battery, reduced charging times.
To achieve these goals, the technical solution used in the present invention is: a kind of electric vehicle brake boost charge circuit, comprise battery, controller, three phase electric machine, three phase rectifier bridge circuit, booster circuit and control circuit, battery is connected with three phase electric machine by controller, three phase electric machine is connected with booster circuit by the three phase rectifier bridge circuit, booster circuit is connected with battery, and controller is connected with booster circuit by control circuit;
Described three phase rectifier bridge circuit comprises three-phase commutation bridge D1 and electrochemical capacitor C2, the 1st pin, the 2nd pin, the 3rd pin of the interchange input of three-phase commutation bridge D1 are connected with A phase line, B phase line, the C phase line of controller and three phase electric machine respectively, the 5th pin direct current output cathode of three-phase commutation bridge D1 connects the positive pole of electrochemical capacitor C2, the 4th pin direct current output negative pole of three-phase commutation bridge D1 connects the negative pole of electrochemical capacitor C2, the minus earth of electrochemical capacitor C2;
Described booster circuit comprises that inductance L 1, rectifier diode D3, N channel depletion type field effect transistor Q3, electrochemical capacitor C4, PWM drive chip U2, resistance R 8, resistance R 9, resistance R 10, resistance R 11, resistance R 13, resistance R 14, resistance R 16, resistance R 17, capacitor C 5, capacitor C 7, capacitor C 8 and capacitor C 9, and an end of inductance L 1 connects the drain electrode of N channel depletion type field effect transistor Q3 and the anode of rectifier diode D3; The end of the gate pole contact resistance R17 of N channel depletion type field effect transistor Q3 and PWM drive the 6th pin of chip U2; The end of the source electrode contact resistance R13 of N channel depletion type field effect transistor Q3 and an end of resistance R 14, the other end of resistance R 13 connects the 3rd pin that PWM drives chip U2, the other end ground connection of resistance R 14; The negative electrode of rectifier diode D3 connects positive pole, an end of resistance R 8 and the positive pole of battery of electrochemical capacitor C4; The other end of resistance R 8 connects by resistance R 9 the 2nd pin that PWM drives chip U2, and PWM drives the 2nd pin of chip U2 by resistance R 10 ground connection; The two ends of resistance R 11 are connected with the two ends of resistance R 10, and PWM drives the 1st pin of chip U2 to be connected by capacitor C 5 with the 2nd pin, and PWM drives the 4th pin of chip U2 to connect by resistance R 16 the 8th pin that PWM drives chip U2, and by capacitor C 7 ground connection; PWM drives the 5th pin ground connection of chip U2, and PWM drives the 7th pin of chip U2 to connect voltage+12V, and, by capacitor C 8 ground connection, PWM drives the 8th pin of chip U2 by capacitor C 9 ground connection;
Described control circuit comprises diode D2, electrochemical capacitor C1, triode Q1, optocoupler U3A, P channel depletion type field effect transistor Q2, resistance R 1, resistance R 2, resistance R 3, resistance R 4, resistance R 5, resistance R 6 and resistance R 7, and the collector electrode of triode Q1 connects the brake feedback signal pin of controller; One end of the anode of diode D2 and resistance R 4 is connected the voltage signal pin of controller; One end of one end of the negative pole of electrochemical capacitor C1, resistance R 3, the emitter of triode Q1, resistance R 5, the 2nd pin of optocoupler U3A connect the brake signal pin of controller jointly; The negative electrode of diode D2 passes through the base stage of resistance R 2 connecting triode Q1, and is connected to the positive pole of electrochemical capacitor C1 by resistance R 1; The base stage of the other end connecting triode Q1 of resistance R 3, the other end of the other end of resistance R 4 and resistance R 5 is connected to the 1st pin of optocoupler U3A, the 3rd pin ground connection of optocoupler U3A; The 4th pin of optocoupler U3A connects the gate pole of P channel depletion type field effect transistor Q2 by resistance R 7, the gate pole of P channel depletion type field effect transistor Q2 connects the source electrode of P channel depletion type field effect transistor Q2 by resistance R 6; The source electrode of P channel depletion type field effect transistor Q2 connects the positive pole of three-phase commutation bridge, and the drain electrode of P channel depletion type field effect transistor Q2 connects the other end of the inductance L 1 in booster circuit.
Compared with prior art, the present invention is by the driving connected mode of battery → controller → three phase electric machine → three-phase commutation bridge → booster circuit → battery, can be in the electric vehicle brake braking, the rotational energy of the three phase electric machine that will be driven by the kinetic energy of electric motor car itself converts electric energy to, battery is charged, thereby effectively extended the flying power of battery, reduced charging times.
The accompanying drawing explanation
Fig. 1 is that existing electric motor car drives the electrical schematic diagram of controlling;
Fig. 2 is electrical schematic diagram of the present invention;
Fig. 3 is circuit diagram of the present invention.
Embodiment
Below in conjunction with accompanying drawing, the invention will be further described.
As shown in Figures 2 and 3, the present invention includes battery, controller, three phase electric machine, three phase rectifier bridge circuit, booster circuit and control circuit, battery is connected with three phase electric machine by controller, three phase electric machine is connected with booster circuit by the three phase rectifier bridge circuit, booster circuit is connected with battery, and controller is connected with booster circuit by control circuit;
Described three phase rectifier bridge circuit comprises three-phase commutation bridge D1 and electrochemical capacitor C2, the 1st pin, the 2nd pin, the 3rd pin of the interchange input of three-phase commutation bridge D1 are connected with A phase line, B phase line, the C phase line of controller and three phase electric machine respectively, the 5th pin direct current output cathode of three-phase commutation bridge D1 connects the positive pole of electrochemical capacitor C2, the 4th pin direct current output negative pole of three-phase commutation bridge D1 connects the negative pole of electrochemical capacitor C2, the minus earth of electrochemical capacitor C2;
Described booster circuit comprises that inductance L 1, rectifier diode D3, N channel depletion type field effect transistor Q3, electrochemical capacitor C4, PWM drive chip U2, resistance R 8, resistance R 9, resistance R 10, resistance R 11, resistance R 13, resistance R 14, resistance R 16, resistance R 17, capacitor C 5, capacitor C 7, capacitor C 8 and capacitor C 9, and an end of inductance L 1 connects the drain electrode of N channel depletion type field effect transistor Q3 and the anode of rectifier diode D3; The end of the gate pole contact resistance R17 of N channel depletion type field effect transistor Q3 and PWM drive the 6th pin of chip U2; The end of the source electrode contact resistance R13 of N channel depletion type field effect transistor Q3 and an end of resistance R 14, the other end of resistance R 13 connects the 3rd pin that PWM drives chip U2, the other end ground connection of resistance R 14; The negative electrode of rectifier diode D3 connects positive pole, an end of resistance R 8 and the positive pole of battery of electrochemical capacitor C4; The other end of resistance R 8 connects by resistance R 9 the 2nd pin that PWM drives chip U2, and PWM drives the 2nd pin of chip U2 by resistance R 10 ground connection; The two ends of resistance R 11 are connected with the two ends of resistance R 10, and PWM drives the 1st pin of chip U2 to be connected by capacitor C 5 with the 2nd pin, and PWM drives the 4th pin of chip U2 to connect by resistance R 16 the 8th pin that PWM drives chip U2, and by capacitor C 7 ground connection; PWM drives the 5th pin ground connection of chip U2, and PWM drives the 7th pin of chip U2 to connect voltage+12V, and, by capacitor C 8 ground connection, PWM drives the 8th pin of chip U2 by capacitor C 9 ground connection;
Described control circuit comprises diode D2, electrochemical capacitor C1, triode Q1, optocoupler U3A, P channel depletion type field effect transistor Q2, resistance R 1, resistance R 2, resistance R 3, resistance R 4, resistance R 5, resistance R 6 and resistance R 7, and the collector electrode of triode Q1 connects the brake feedback signal pin of controller; One end of the anode of diode D2 and resistance R 4 is connected the voltage signal pin of controller; One end of one end of the negative pole of electrochemical capacitor C1, resistance R 3, the emitter of triode Q1, resistance R 5, the 2nd pin of optocoupler U3A connect the brake signal pin of controller jointly; The negative electrode of diode D2 passes through the base stage of resistance R 2 connecting triode Q1, and is connected to the positive pole of electrochemical capacitor C1 by resistance R 1; The base stage of the other end connecting triode Q1 of resistance R 3, the other end of the other end of resistance R 4 and resistance R 5 is connected to the 1st pin of optocoupler U3A, the 3rd pin ground connection of optocoupler U3A; The 4th pin of optocoupler U3A connects the gate pole of P channel depletion type field effect transistor Q2 by resistance R 7, the gate pole of P channel depletion type field effect transistor Q2 connects the source electrode of P channel depletion type field effect transistor Q2 by resistance R 6; The source electrode of P channel depletion type field effect transistor Q2 connects the positive pole of three-phase commutation bridge, and the drain electrode of P channel depletion type field effect transistor Q2 connects the other end of the inductance L 1 in booster circuit.
When electric motor car does not brake, controller converts the DC voltage control of battery to three-phase alternating voltage output and drives the three phase electric machine running, and controls control circuit and forbid booster circuit work, because now cannot charge; When electric vehicle brake, controller no longer converts the DC voltage control of battery to three-phase alternating voltage output and drives the three phase electric machine running, now, three phase electric machine turns round under the effect of the kinetic energy of electric motor car or potential energy, be rectified into direct voltage by three-phase commutation bridge, controller is controlled control circuit and is started booster circuit work, and battery is charged.
The specific works process: the brake feedback signal in controller, voltage signal, brake signal are all high level under braking state not, when brake, brake signal becomes low level, will produce pressure drop between the 1st pin of optocoupler U3A and the 2nd pin, make the 4th pin of optocoupler U3A be pulled to ground, resistance R 6 and resistance R 7 dividing potential drops, the dividing potential drop on resistance R 6 makes source electrode and the drain electrode conducting of P channel depletion type field effect transistor Q2, make three-phase commutation bridge and booster circuit conducting, start battery is charged; Voltage signal is by diode D2,1 pair of electrochemical capacitor C1 charging of resistance R simultaneously, charging is after the very short time reaches triode Q1 starting resistor, the collector electrode of triode Q1 and discharge electrode conducting, the brake feedback signal is pulled into to low level, make controller This move be detected, no longer drive three phase electric machine work.
PWM drives the 5th pin ground connection of chip U2, and the 7th pin connects voltage source; It is the Voltage Feedback function that PWM drives the 2nd pin of chip U2, by resistance R 8, resistance R 9, resistance R 10, resistance R 11, detects and controls output voltage, and PWM drives the 1st pin of chip U2 and the capacitor C 5 between the 2nd pin to play the feedback compensation effect; It is the current feedback function that PWM drives the 3rd pin of chip U2, by detection, examines the upper voltage control output current of leakage resistance R14; PWM drives the 3rd pin of chip U2 for determining the working frequency of chip function; PWM drives the function that the 6th pin of chip U2 is PWM square wave driving N channel depletion type field effect transistor Q3; PWM drives the 8th pin of chip U2 to be+5V reference voltage pin, for PWM drives the 3rd pin of chip U2, provides reference voltage.
Inductance L 1, N channel depletion type field effect transistor Q3, rectifier diode D3, electrochemical capacitor C4 form the main circuit of booster circuit, drive detection, control, the driving of chip by PWM, make each element complete the function of boosting, battery is charged, and can be accomplished the defencive function to battery such as pressure limiting, current limliting; The kinetic energy of the electric motor car while so just having reached brake or the purpose that potential energy converting and energy becomes electric energy.
Claims (1)
1. an electric vehicle brake boost charge circuit, it is characterized in that, comprise battery, controller, three phase electric machine, three phase rectifier bridge circuit, booster circuit and control circuit, battery is connected with three phase electric machine by controller, three phase electric machine is connected with booster circuit by the three phase rectifier bridge circuit, booster circuit is connected with battery, and controller is connected with booster circuit by control circuit;
Described three phase rectifier bridge circuit comprises three-phase commutation bridge D1 and electrochemical capacitor C2, the 1st pin, the 2nd pin, the 3rd pin of the interchange input of three-phase commutation bridge D1 are connected with A phase line, B phase line, the C phase line of controller and three phase electric machine respectively, the 5th pin of three-phase commutation bridge D1 connects the positive pole of electrochemical capacitor C2, the 4th pin of three-phase commutation bridge D1 connects the negative pole of electrochemical capacitor C2, the minus earth of electrochemical capacitor C2;
Described booster circuit comprises that inductance L 1, rectifier diode D3, N channel depletion type field effect transistor Q3, electrochemical capacitor C4, PWM drive chip U2, resistance R 8, resistance R 9, resistance R 10, resistance R 11, resistance R 13, resistance R 14, resistance R 16, resistance R 17, capacitor C 5, capacitor C 7, capacitor C 8 and capacitor C 9, and an end of inductance L 1 connects the drain electrode of N channel depletion type field effect transistor Q3 and the anode of rectifier diode D3; The end of the gate pole contact resistance R17 of N channel depletion type field effect transistor Q3 and PWM drive the 6th pin of chip U2; The end of the source electrode contact resistance R13 of N channel depletion type field effect transistor Q3 and an end of resistance R 14, the other end of resistance R 13 connects the 3rd pin that PWM drives chip U2, the other end ground connection of resistance R 14; The negative electrode of rectifier diode D3 connects positive pole, an end of resistance R 8 and the positive pole of battery of electrochemical capacitor C4; The other end of resistance R 8 connects by resistance R 9 the 2nd pin that PWM drives chip U2, and PWM drives the 2nd pin of chip U2 by resistance R 10 ground connection; The two ends of resistance R 11 are connected with the two ends of resistance R 10, and PWM drives the 1st pin of chip U2 to be connected by capacitor C 5 with the 2nd pin, and PWM drives the 4th pin of chip U2 to connect by resistance R 16 the 8th pin that PWM drives chip U2, and by capacitor C 7 ground connection; PWM drives the 5th pin ground connection of chip U2, and PWM drives the 7th pin of chip U2 to connect voltage+12V, and, by capacitor C 8 ground connection, PWM drives the 8th pin of chip U2 by capacitor C 9 ground connection;
Described control circuit comprises diode D2, electrochemical capacitor C1, triode Q1, optocoupler U3A, P channel depletion type field effect transistor Q2, resistance R 1, resistance R 2, resistance R 3, resistance R 4, resistance R 5, resistance R 6 and resistance R 7, and the collector electrode of triode Q1 connects the brake feedback signal pin of controller; One end of the anode of diode D2 and resistance R 4 is connected the voltage signal pin of controller; One end of one end of the negative pole of electrochemical capacitor C1, resistance R 3, the emitter of triode Q1, resistance R 5, the 2nd pin of optocoupler U3A connect the brake signal pin of controller jointly; The negative electrode of diode D2 passes through the base stage of resistance R 2 connecting triode Q1, and is connected to the positive pole of electrochemical capacitor C1 by resistance R 1; The base stage of the other end connecting triode Q1 of resistance R 3, the other end of the other end of resistance R 4 and resistance R 5 is connected to the 1st pin of optocoupler U3A, the 3rd pin ground connection of optocoupler U3A; The 4th pin of optocoupler U3A connects the gate pole of P channel depletion type field effect transistor Q2 by resistance R 7, the gate pole of P channel depletion type field effect transistor Q2 connects the source electrode of P channel depletion type field effect transistor Q2 by resistance R 6; The source electrode of P channel depletion type field effect transistor Q2 connects the positive pole of three-phase commutation bridge, and the drain electrode of P channel depletion type field effect transistor Q2 connects the other end of the inductance L 1 in booster circuit.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2013103693996A CN103441545A (en) | 2013-08-22 | 2013-08-22 | Braking and boosting charging circuit of electric vehicle |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2013103693996A CN103441545A (en) | 2013-08-22 | 2013-08-22 | Braking and boosting charging circuit of electric vehicle |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101594106A (en) * | 2009-07-10 | 2009-12-02 | 奇瑞汽车股份有限公司 | A kind of electric machine control system of line control brake system and control method |
| US20100057284A1 (en) * | 2006-12-26 | 2010-03-04 | Byd Company Limited | Method and apparatus for controlling motor for skid mode of electric vehicle |
| CN102343824A (en) * | 2010-07-30 | 2012-02-08 | 北汽福田汽车股份有限公司 | Regenerative braking control method of electric car and device thereof |
| CN103227491A (en) * | 2013-04-28 | 2013-07-31 | 湘潭大学 | Data collection and energy balance control device and method for lithium battery pack of electromobile |
| CN203434698U (en) * | 2013-08-22 | 2014-02-12 | 徐州市恒源电器有限公司 | Electric-vehicle brake boost charging circuit |
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- 2013-08-22 CN CN2013103693996A patent/CN103441545A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20100057284A1 (en) * | 2006-12-26 | 2010-03-04 | Byd Company Limited | Method and apparatus for controlling motor for skid mode of electric vehicle |
| CN101594106A (en) * | 2009-07-10 | 2009-12-02 | 奇瑞汽车股份有限公司 | A kind of electric machine control system of line control brake system and control method |
| CN102343824A (en) * | 2010-07-30 | 2012-02-08 | 北汽福田汽车股份有限公司 | Regenerative braking control method of electric car and device thereof |
| CN103227491A (en) * | 2013-04-28 | 2013-07-31 | 湘潭大学 | Data collection and energy balance control device and method for lithium battery pack of electromobile |
| CN203434698U (en) * | 2013-08-22 | 2014-02-12 | 徐州市恒源电器有限公司 | Electric-vehicle brake boost charging circuit |
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Application publication date: 20131211 |