CN107863898A - Vehicle-mounted inverter circuit - Google Patents
Vehicle-mounted inverter circuit Download PDFInfo
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- CN107863898A CN107863898A CN201711275131.0A CN201711275131A CN107863898A CN 107863898 A CN107863898 A CN 107863898A CN 201711275131 A CN201711275131 A CN 201711275131A CN 107863898 A CN107863898 A CN 107863898A
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- inverter circuit
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Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M7/00—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
- H02M7/42—Conversion of dc power input into ac power output without possibility of reversal
- H02M7/44—Conversion of dc power input into ac power output without possibility of reversal by static converters
- H02M7/48—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
- H02M7/53—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal
- H02M7/537—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only, e.g. single switched pulse inverters
- H02M7/5387—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only, e.g. single switched pulse inverters in a bridge configuration
- H02M7/53871—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only, e.g. single switched pulse inverters in a bridge configuration with automatic control of output voltage or current
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H7/00—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
- H02H7/10—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for converters; for rectifiers
- H02H7/12—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for converters; for rectifiers for static converters or rectifiers
- H02H7/122—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for converters; for rectifiers for static converters or rectifiers for inverters, i.e. dc/ac converters
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M1/00—Details of apparatus for conversion
- H02M1/08—Circuits specially adapted for the generation of control voltages for semiconductor devices incorporated in static converters
- H02M1/088—Circuits specially adapted for the generation of control voltages for semiconductor devices incorporated in static converters for the simultaneous control of series or parallel connected semiconductor devices
- H02M1/092—Circuits specially adapted for the generation of control voltages for semiconductor devices incorporated in static converters for the simultaneous control of series or parallel connected semiconductor devices the control signals being transmitted optically
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M1/00—Details of apparatus for conversion
- H02M1/14—Arrangements for reducing ripples from dc input or output
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M3/00—Conversion of dc power input into dc power output
- H02M3/22—Conversion of dc power input into dc power output with intermediate conversion into ac
- H02M3/24—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters
- H02M3/28—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac
- H02M3/325—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal
- H02M3/335—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only
- H02M3/33569—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only having several active switching elements
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Inverter Devices (AREA)
Abstract
The present invention provides a kind of vehicle-mounted inverter circuit, including：Boost conversion circuit, median filter circuit, inverter circuit, microcontroller, output filter circuit, alternating voltage input detecting circuit, alternating voltage RMS to DC circuit, switch K1, voltage feedback circuit, cell voltage supervisory circuit, builtin voltage supply circuit, and at least one current sensor CT；The input of boost conversion circuit is used to connect cell voltage Vbat, and output voltage is higher than Vbat busbar voltage Vbus under Micro-processor MCV control；Busbar voltage Vbus inputs inverter circuit after median filter circuit filtering, and inverter circuit is used to produce the alternating voltage supplied out；Inverter circuit connects inverter ac output end by output filter circuit；Voltage feedback circuit produces feedback voltage signal and exported to microcontroller and boost conversion circuit respectively；The present invention can automatically switch external communication voltage.
Description
Technical field
The present invention relates to a kind of vehicle-mounted inverter, especially a kind of vehicle-mounted inverter circuit.
Background technology
Vehicle-mounted inverter（Power supply changeover device, Power Inverter）DC12V direct currents can be converted to and civil power phase
Same AC220V alternating currents, used for general electrical equipment, be a kind of convenient power supply converter for vehicle.
The circuit structure of vehicle-mounted inverter is a lot, and how the stable circuit of design work, which is designer, needs what is considered to ask
One of topic；
The DC inverter of on-vehicle battery can only be AC 220v alternating currents by existing vehicle-mounted inverter, can not be automatically switched outer
Connect AC 220v alternating currents.
The content of the invention
It is an object of the invention to overcome the deficiencies in the prior art, there is provided a kind of vehicle-mounted inverter circuit, circuit
It is rational in infrastructure, can outside have alternating voltage input when quickly automatically switch to external communication electricity so that in vehicle parking
When without using the electric energy inside on-vehicle battery, the alternating current of external electrical network can be user-friendly.The technology that the present invention uses
Scheme is：
A kind of vehicle-mounted inverter circuit, including：
Boost conversion circuit, median filter circuit, inverter circuit, microcontroller, output filter circuit, alternating voltage input
Detect circuit, alternating voltage RMS to DC circuit, switch K1, voltage feedback circuit, cell voltage supervisory circuit, internal electricity
Press supply circuit, and at least one current sensor CT；
The input of boost conversion circuit is used to connect cell voltage Vbat, and output voltage is higher than under Micro-processor MCV control
Vbat busbar voltage Vbus；
Busbar voltage Vbus inputs inverter circuit after median filter circuit filtering, and inverter circuit is used to produce what is supplied out
Alternating voltage；Inverter circuit connects inverter ac output end by output filter circuit；
Busbar voltage Vbus caused by the input termination boost conversion circuit of voltage feedback circuit, and feedback voltage letter is produced respectively
Number output is to microcontroller and boost conversion circuit；
The input current and/or the input current of inverter circuit and/or inverse of boost conversion circuit are detected by current sensor CT
Become the output current of circuit, and feed back to microcontroller；
The input of cell voltage supervisory circuit is used to connect cell voltage Vbat, and output end feeds back battery to microcontroller
Voltage monitoring signal；
The input of builtin voltage supply circuit is used to connect cell voltage Vbat, and produces what is needed in vehicle-mounted inverter circuit
Each DC voltage；
The input of two alternating voltage input detecting circuits connects the two-terminal of inverter ac input, output end difference respectively
To microcontroller feedback communication voltage detection signal；Switch K1 the first termination inverter ac input, switch K1
Second termination alternating voltage RMS to DC circuit input, alternating voltage RMS to DC circuit output termination inversion
Device ac output end；Switch K1 is controlled by Micro-processor MCV；The feedback termination microprocessor of alternating voltage RMS to DC circuit
Device MCU.
Further, boost conversion circuit includes isolating transformer T1, NMOS tube Q1, Q2, rectifier bridge RCT1, gate-drive
Circuit, PWM controller U1；
The switching signal of PWM controller U1 input termination microcontroller output, PWM controller U1 connections gate-drive electricity
Road, the output end of two opposite in phase of gate drive circuit connect NMOS tube Q1 grids and Q2 grids respectively；NMOS tube Q1, Q2
Source electrode connects primary ground, and NMOS tube Q1 drain electrode connects isolating transformer T1 primary one end, and NMOS tube Q2 drain electrode connects isolation transformation
The device T1 primary other ends, isolating transformer T1 primary centre tap are used to connect anode；Isolating transformer T1 secondary
Both ends connect two inputs of rectifier bridge RCT1 respectively；The feedback voltage signal all the way of voltage feedback circuit meets PWM controller U1.
Further, the first electric current is set on the line between anode and isolating transformer T1 primary centre taps
Sensor CT1, for detecting the input current of boost conversion circuit and being fed back to microcontroller.
Further, median filter circuit includes inductance L1 and electric capacity C2, and an inductance L1 termination rectifier bridge RCT1 is just
Output end, another termination capacitor C2 one end；The rectifier bridge RCT1 negative output termination capacitor C2 other ends and secondary ground.
Further, inverter circuit includes inverter controller U2, U3, NMOS tube Q3, Q4, Q5, Q6；
Inverter controller U2, U3 are all connected with and are controlled by Micro-processor MCV；Inverter controller U2 two drive ends connect respectively
The grid of NMOS tube Q3, Q4, inverter controller U3 two drive ends connect the grid of NMOS tube Q5, Q6, NMOS tube Q4, Q6 respectively
Source electrode connect secondary ground；The drain electrode of NMOS tube Q3, Q5 connects the inductance L1 other end；Q3 source electrode is connected with Q4 drain electrode and conduct
The high-end output end of inverter circuit, the drain electrode of Q5 source electrode and Q6 connect and as the low side output end of inverter circuit.
Further, it is equipped with electrical isolation element in inverter controller U2, U3 and Micro-processor MCV connection branch road.
Further, on the inductance L1 other ends and the line of NMOS tube Q3, Q5 drain electrode, provided with the second current sensor
CT2, for detecting the input current of inverter circuit and being fed back to microcontroller.
Further, output filter circuit includes inductance L2 and electric capacity C3；The one of inductance L2 terminates the high-end of inverter circuit
Output end, another termination capacitor C3 one end, the bottom output end of electric capacity C3 another termination inverter circuit；Use at electric capacity C3 both ends
In connecing inverter ac output end.
Further, on the line between the high-end output end of inverter circuit and inductance L2, provided with the 3rd current sensor
CT3, for detecting the output current of inverter circuit and being fed back to microcontroller.
Further, temperature sensor is set on isolating transformer T1, for producing isolating transformer T1 temperature detection
Signal simultaneously feeds back to Micro-processor MCV；
Temperature sensor is set on radiator in inverter circuit, for producing inverter circuit temperature detection signal and to micro- place
Manage device MCU feedbacks.
The advantage of the invention is that：
1）Comprehensive defencive function, there is overcurrent protection, high temperature protection, over-current over-voltage protection etc..
2）Automatic detection external communication control source, automatic switchover external communication voltage.
3）It is wide with temperature compensation function, use temperature range：- 35 DEG C~+50 DEG C.
Brief description of the drawings
Fig. 1 is the circuit block diagram of the present invention.
Fig. 2 is the circuit theory diagrams of the present invention.
Embodiment
With reference to specific drawings and examples, the invention will be further described.
As shown in figure 1, the present invention provides a kind of vehicle-mounted inverter circuit, including：
Boost conversion circuit 1, median filter circuit 2, inverter circuit 3, microcontroller, output filter circuit 4, alternating voltage
Input detecting circuit 5, alternating voltage RMS to DC circuit 6, switch K1, voltage feedback circuit 7, cell voltage supervisory circuit
8th, builtin voltage supply circuit 9, and at least one current sensor CT；
The input of boost conversion circuit 1 is used to connect cell voltage Vbat, and output voltage is higher than under Micro-processor MCV control
Vbat busbar voltage Vbus；
Busbar voltage Vbus inputs inverter circuit 3 after the filtering of median filter circuit 2, and inverter circuit 3 supplies out for generation
Alternating voltage；Inverter circuit 3 connects inverter ac output end by output filter circuit 4；
Busbar voltage Vbus caused by the input termination boost conversion circuit 1 of voltage feedback circuit 7, and feedback voltage is produced respectively
Signal output is to microcontroller and boost conversion circuit 1；Electrical isolation element, such as photoelectricity are provided with voltage feedback circuit 7
Coupler；
By current sensor CT detect boost conversion circuit 1 input current and/or inverter circuit 3 input current and/or
The output current of inverter circuit 3, and feed back to microcontroller；
The input of cell voltage supervisory circuit 8 is used to connect cell voltage Vbat, and output end feeds back battery to microcontroller
Voltage monitoring signal；
The input of builtin voltage supply circuit 9 needs for connecting cell voltage Vbat, and producing in vehicle-mounted inverter circuit
Each DC voltage, such as needed in boost conversion circuit 1 15v voltages, microcontroller need 5v voltages, inversion electricity
15v voltages needed in road 3 etc.；
The input of two alternating voltage input detecting circuits 5 connects the two-terminal of inverter ac input, output end point respectively
Not to microcontroller feedback communication voltage detection signal；Switch K1 the first termination inverter ac input, switch
The input of K1 the second termination alternating voltage RMS to DC circuit 6, the output termination of alternating voltage RMS to DC circuit 6
Inverter ac output end；Switch K1 is controlled by Micro-processor MCV；The feedback termination of alternating voltage RMS to DC circuit 6
Micro-processor MCV；
Each several part circuit is specifically described below；
Push-pull type translation circuit, including isolating transformer T1, NMOS tube Q1, Q2, rectifier bridge are used in this example of boost conversion circuit 1
RCT1, gate drive circuit 101, PWM controller U1；U1 can use SG3525；
The switching signal of PWM controller U1 input termination microcontroller output, PWM controller U1 connections gate-drive electricity
Road 101, the output end of two opposite in phase of gate drive circuit 101 connect NMOS tube Q1 grids and Q2 grids respectively；NMOS tube
Q1, Q2 source electrode connect primary ground, and NMOS tube Q1 drain electrode connects isolating transformer T1 primary one end, NMOS tube Q2 drain electrode connect every
From the transformer T1 primary other ends, isolating transformer T1 primary centre tap is used to connect anode；Isolating transformer T1
Secondary both ends connect two inputs of rectifier bridge RCT1 respectively；The feedback voltage signal all the way of voltage feedback circuit 7 connects PWM controls
Device U1；
Electrical isolation element, such as photoelectrical coupler are provided with gate drive circuit 101；The place that ISO in Fig. 1 be present is equipped with
Electrical isolation element；
More preferably, the first current sensor is set on the line between anode and isolating transformer T1 primary centre taps
CT1, for detecting the input current of boost conversion circuit 1 and being fed back to microcontroller；
More preferably, the input of boost conversion circuit 1 is also parallel with filter capacitor C1；Also set between battery and boost conversion circuit 1
There is fuse F1；
Median filter circuit 2 includes inductance L1 and electric capacity C2, inductance L1 termination rectifier bridge RCT1 positive output end, the other end
Connect electric capacity C2 one end；The rectifier bridge RCT1 negative output termination capacitor C2 other ends and secondary ground；
Full bridge inverter, including inverter controller U2, U3, NMOS tube Q3, Q4, Q5, Q6 are used in this example of inverter circuit 3；Its
Middle U2 and U3 use L6386E；
Inverter controller U2, U3 are all connected with and are controlled by Micro-processor MCV, connect in inverter controller U2, U3 and Micro-processor MCV
Connect and electrical isolation element is equipped with branch road, such as photoelectrical coupler；Inverter controller U2 two drive ends meet NMOS respectively
Pipe Q3, Q4 grid, inverter controller U3 two drive ends connect the grid of NMOS tube Q5, Q6, the source of NMOS tube Q4, Q6 respectively
Pole connects secondary ground；The drain electrode of NMOS tube Q3, Q5 connects the inductance L1 other end；Q3 source electrode connects with Q4 drain electrode and is used as inversion
The high-end output end of circuit 3, the drain electrode of Q5 source electrode and Q6 connect and as the low side output end of inverter circuit 3；
More preferably, on the inductance L1 other ends and the line of NMOS tube Q3, Q5 drain electrode, provided with the second current sensor CT2, it is used for
Detect the input current of inverter circuit 3 and fed back to microcontroller；
Output filter circuit 4 includes inductance L2 and electric capacity C3；The high-end output end of an inductance L2 termination inverter circuit 3, it is another
Termination capacitor C3 one end, the bottom output end of electric capacity C3 another termination inverter circuit 3；Electric capacity C3 both ends are used to connect inverter
Ac output end；Preferably, it is provided with fuse F2 in inverter ac output end；
More preferably, on the line between 3 high-end output end of inverter circuit and inductance L2, provided with the 3rd current sensor CT3, use
Fed back in the output current for detecting inverter circuit 3 and to microcontroller；
More preferably,
Temperature sensor is set on isolating transformer T1, for producing isolating transformer T1 temperature detection signal and to microprocessor
Device MCU feeds back；
Temperature sensor is set on radiator in inverter circuit 3, for producing inverter circuit temperature detection signal and to micro-
Processor MCU feeds back；Radiator in inverter circuit 3 is connected with NMOS tube Q3, Q4, Q5, Q6；
Micro-processor MCV is also connected with a fan control circuitry 10, and the rotating speed of fan is controlled by fan control circuitry 10；
Micro-processor MCV is also connected with a buzzer, for producing alerting tone；
Microprocessor is also connected with indication LED, and one remote control port Remote of connection.
The vehicle-mounted inverter circuit monitors external electrical network exchange input in real time, if any external communication control source, stops immediately
Non-return change（Microprocessor control inverter circuit 3 is stopped）, inputted by controlling switch K1 to then switch to external communication.
The vehicle-mounted inverter circuit monitors battery status in real time, avoids battery over-discharge.And there is temperature compensation function,
Use temperature range is wide：- 35 DEG C~+50 DEG C.
It should be noted last that above embodiment is merely illustrative of the technical solution of the present invention and unrestricted,
Although the present invention is described in detail with reference to example, it will be understood by those within the art that, can be to the present invention
Technical scheme modify or equivalent substitution, without departing from the spirit and scope of technical solution of the present invention, it all should cover
Among scope of the presently claimed invention.
Claims (10)
- A kind of 1. vehicle-mounted inverter circuit, it is characterised in that including：Boost conversion circuit (1), median filter circuit (2), inverter circuit (3), microcontroller, output filter circuit (4), Alternating voltage input detecting circuit (5), alternating voltage RMS to DC circuit (6), switch K1, voltage feedback circuit (7), electricity Cell voltage supervisory circuit (8), builtin voltage supply circuit (9), and at least one current sensor CT；The input of boost conversion circuit (1) is used to connect cell voltage Vbat, and output voltage is high under Micro-processor MCV control In Vbat busbar voltage Vbus；Busbar voltage Vbus inputs inverter circuit (3) after median filter circuit (2) filtering, and inverter circuit (3) is used to produce The alternating voltage supplied out；Inverter circuit (3) connects inverter ac output end by output filter circuit (4)；Busbar voltage Vbus caused by the input termination boost conversion circuit (1) of voltage feedback circuit (7), and feedback is produced respectively Voltage signal is exported to microcontroller and boost conversion circuit (1)；The input current of boost conversion circuit (1) and/or the input current of inverter circuit (3) are detected by current sensor CT And/or the output current of inverter circuit (3), and feed back to microcontroller；The input of cell voltage supervisory circuit (8) is used to connect cell voltage Vbat, and output end feeds back electricity to microcontroller Cell voltage monitoring signal；The input of builtin voltage supply circuit (9) needs for connecting cell voltage Vbat, and producing in vehicle-mounted inverter circuit Each DC voltage wanted；The input of two alternating voltage input detecting circuits (5) connects the two-terminal of inverter ac input, output end respectively Respectively to microcontroller feedback communication voltage detection signal；Switch K1 the first termination inverter ac input, switching Device K1 second termination alternating voltage RMS to DC circuit (6) input, alternating voltage RMS to DC circuit (6) it is defeated Go out to terminate inverter ac output end；Switch K1 is controlled by Micro-processor MCV；Alternating voltage RMS to DC circuit (6) Feedback termination Micro-processor MCV.
- 2. vehicle-mounted inverter circuit as claimed in claim 1, it is characterised in thatBoost conversion circuit (1) include isolating transformer T1, NMOS tube Q1, Q2, rectifier bridge RCT1, gate drive circuit (101), PWM controller U1；The switching signal of PWM controller U1 input termination microcontroller output, PWM controller U1 connections gate-drive electricity Road (101), the output end of two opposite in phase of gate drive circuit (101) connect NMOS tube Q1 grids and Q2 grids respectively； The source electrode of NMOS tube Q1, Q2 connects primary ground, and NMOS tube Q1 drain electrode connects isolating transformer T1 primary one end, NMOS tube Q2 leakage Pole connects the isolating transformer T1 primary other ends, and isolating transformer T1 primary centre tap is used to connect anode；Isolation becomes Depressor T1 secondary both ends connect two inputs of rectifier bridge RCT1 respectively；The feedback voltage signal all the way of voltage feedback circuit (7) Meet PWM controller U1.
- 3. vehicle-mounted inverter circuit as claimed in claim 2, it is characterised in thatFirst current sensor CT1 is set on the line between anode and isolating transformer T1 primary centre taps, used Fed back in the input current for detecting boost conversion circuit (1) and to microcontroller.
- 4. vehicle-mounted inverter circuit as claimed in claim 2, it is characterised in thatMedian filter circuit (2) includes inductance L1 and electric capacity C2, and inductance L1 termination rectifier bridge RCT1 positive output end is another Termination capacitor C2 one end；The rectifier bridge RCT1 negative output termination capacitor C2 other ends and secondary ground.
- 5. vehicle-mounted inverter circuit as claimed in claim 4, it is characterised in thatInverter circuit (3) includes inverter controller U2, U3, NMOS tube Q3, Q4, Q5, Q6；Inverter controller U2, U3 are all connected with and are controlled by Micro-processor MCV；Inverter controller U2 two drive ends connect respectively The grid of NMOS tube Q3, Q4, inverter controller U3 two drive ends connect the grid of NMOS tube Q5, Q6, NMOS tube Q4, Q6 respectively Source electrode connect secondary ground；The drain electrode of NMOS tube Q3, Q5 connects the inductance L1 other end；Q3 source electrode is connected with Q4 drain electrode and conduct The high-end output end of inverter circuit (3), Q5 source electrode connect with Q6 drain electrode and are used as the low side output end of inverter circuit (3).
- 6. vehicle-mounted inverter circuit as claimed in claim 5, it is characterised in thatElectrical isolation element is equipped with inverter controller U2, U3 and Micro-processor MCV connection branch road.
- 7. vehicle-mounted inverter circuit as claimed in claim 5, it is characterised in thatIt is inverse for detecting provided with the second current sensor CT2 on the inductance L1 other ends and the line of NMOS tube Q3, Q5 drain electrode Become the input current of circuit (3) and fed back to microcontroller.
- 8. vehicle-mounted inverter circuit as claimed in claim 5, it is characterised in thatOutput filter circuit (4) includes inductance L2 and electric capacity C3；The high-end output end of an inductance L2 termination inverter circuit (3), Another termination capacitor C3 one end, the bottom output end of electric capacity C3 another termination inverter circuit (3)；Electric capacity C3 both ends are used to connect Inverter ac output end.
- 9. vehicle-mounted inverter circuit as claimed in claim 8, it is characterised in thatOn line between the high-end output end of inverter circuit (3) and inductance L2, provided with the 3rd current sensor CT3, for examining Survey the output current of inverter circuit (3) and fed back to microcontroller.
- 10. vehicle-mounted inverter circuit as claimed in claim 2, it is characterised in thatTemperature sensor is set on isolating transformer T1, for producing isolating transformer T1 temperature detection signal and to microprocessor Device MCU feeds back；Temperature sensor is set on radiator in inverter circuit (3), for produce inverter circuit temperature detection signal and to Micro-processor MCV feeds back.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711275131.0A CN107863898A (en) | 2017-12-06 | 2017-12-06 | Vehicle-mounted inverter circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711275131.0A CN107863898A (en) | 2017-12-06 | 2017-12-06 | Vehicle-mounted inverter circuit |
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| Publication Number | Publication Date |
|---|---|
| CN107863898A true CN107863898A (en) | 2018-03-30 |
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ID=61705153
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711275131.0A Pending CN107863898A (en) | 2017-12-06 | 2017-12-06 | Vehicle-mounted inverter circuit |
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| CN (1) | CN107863898A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108767808A (en) * | 2018-05-29 | 2018-11-06 | 株洲易力达机电有限公司 | A kind of diagnosis of EPS controller power sources and protection system and method |
| CN113270997A (en) * | 2021-06-07 | 2021-08-17 | 浙江精英电器有限公司 | Progressive control method and control circuit for surge steps of inverter |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105576731A (en) * | 2014-10-17 | 2016-05-11 | 天宝电子（惠州）有限公司 | Vehicle-mounted charging and inversion bidirectional AC power supply system |
| CN207530722U (en) * | 2017-12-06 | 2018-06-22 | 帝发技术(无锡)有限公司 | vehicle-mounted inverter circuit |
-
2017
- 2017-12-06 CN CN201711275131.0A patent/CN107863898A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105576731A (en) * | 2014-10-17 | 2016-05-11 | 天宝电子（惠州）有限公司 | Vehicle-mounted charging and inversion bidirectional AC power supply system |
| CN207530722U (en) * | 2017-12-06 | 2018-06-22 | 帝发技术(无锡)有限公司 | vehicle-mounted inverter circuit |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108767808A (en) * | 2018-05-29 | 2018-11-06 | 株洲易力达机电有限公司 | A kind of diagnosis of EPS controller power sources and protection system and method |
| CN113270997A (en) * | 2021-06-07 | 2021-08-17 | 浙江精英电器有限公司 | Progressive control method and control circuit for surge steps of inverter |
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