CN209345028U - A kind of inverter circuit - Google Patents
A kind of inverter circuit Download PDFInfo
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- CN209345028U CN209345028U CN201822268269.4U CN201822268269U CN209345028U CN 209345028 U CN209345028 U CN 209345028U CN 201822268269 U CN201822268269 U CN 201822268269U CN 209345028 U CN209345028 U CN 209345028U
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Abstract
The utility model discloses a kind of inverter circuits, which is characterized in that the inverter circuit includes DC power supply；The controller being connect with the DC power supply；The disconnecting switch being connect with the controller；The drive module being connect with the DC power supply and the disconnecting switch；The inversion unit being connect with the DC power supply and the drive module；The detection module being connect with the DC power supply, controller and inversion unit；Advantage is to control drive module by controller and disconnecting switch; controller can be protected; it reduces controller and driver is directly connected to a possibility that bring controller is burnt; the exchange that the detection module of setting can export inversion unit simultaneously is monitored and is adjusted by alternating current of the controller to output; detection module includes power detecting and current detecting, and the reliability of the alternating current of output has been ensured to the detection of voltage and current.
Description
Technical field
The utility model relates to inverter field, especially a kind of inverter circuit.
Background technique
With the continuous development of power electronic technique, inverter is widely used in power electronics field.Example
Such as in photovoltaic power generation technology and emergency power supply field.Inverter is dependent on by direct current in photovoltaic power generation and emergency power supply field
Electric energy inversion becomes and alternating current is then applied in electrical equipment, and inverter can cooperate booster circuit and filter circuit simultaneously
It uses, the electric energy that booster circuit exports is carried out inversion and the alternating current after inversion is so delivered to filter circuit by inverter.
Insensitive to the control of switch element in existing inverter, i.e. the conducting shutdown of switch element takes a long time, and makes
It obtains switch element to consume energy at work seriously, will cause fever while energy consumption seriously makes the service life of switch element contract
It is short, it will cause burning for switch element when thermal accumlation is serious.Therefore it needs to be monitored inverter circuit, if there are abnormal feelings
Voltage after condition, such as inversion needs inverter circuit to make timely adjustment up to unqualified.
Summary of the invention
The technical problem to be solved by the utility model is to provide a kind of switch element fast response time and can to inversion electricity
The inverter circuit that road is monitored.
Technical solution adopted by the utility model to solve the above technical problems is as follows: a kind of inverter circuit, the inversion
Circuit includes: DC power supply；
The controller being connect with the DC power supply；
The disconnecting switch being connect with the controller；
The drive module being connect with the DC power supply and the disconnecting switch；
The inversion unit being connect with the DC power supply and the drive module；
The detection module being connect with the DC power supply, controller and inversion unit.
Preferably, the DC power supply includes the first power supply, second source and third power supply, and first power supply is
The controller, detection module provide electric energy, and the second source provides electric energy, the third power supply for drive module
Electric energy is provided for inversion unit, the electric energy that third power supply provides is reverse into alternating current by the inversion unit.
Preferably, the controller is made of EG8010 chip and its peripheral circuit, is connected on the controller
It is used to indicate the indicator light of inverter circuit working condition.
Preferably, the disconnecting switch includes the first triode for being positive-negative-positive, the second triode, third transistor
With the 4th triode, the emitter and the first output end of controller of first triode, one end of first resistor are homogeneous
Even, the emitter of second triode is connected with one end of the second output terminal of controller, second resistance, and described the
The other end of one resistance is connected with the base stage of the second triode, the base of the other end of the second resistance and the first triode
Pole is connected, and the collector of first triode is connected with one end of the first input end of drive module, 3rd resistor
It connects, the collector of second triode is connected with one end of the second input terminal of drive module, the 4th resistance, described
The other end of 3rd resistor, the other end of the 4th resistance is connected with ground wire；The emitter of the third transistor with
The third output end of controller, the 5th resistance one end be connected, the of the emitter of the 4th triode and controller
Four output ends, one end of the 6th resistance are connected, and the other end of the 5th resistance is connected with the base stage of the 4th triode,
The other end of 6th resistance is connected with the base stage of third transistor, the collector of the third transistor and driving
The third input terminal of module, one end of the 7th resistance are connected, the collector of the 4th triode and drive module
4th input terminal, the 8th resistance one end be connected, the other end of the 7th resistance, the 8th resistance the other end with
Ground wire is connected.
Preferably, the drive module includes identical first driving chip and the second driving chip, and described first
Driving chip and the second driving chip are made of EG2113S chip, one end of 3 feet of the first driving chip and first capacitor,
The anode of first diode, the anode of the second capacitor, DC power supply are connected, the other end of the first capacitor, second
The cathode of capacitor is connected with ground wire, 7 feet of the cathode of the first diode and the first driving chip, third capacitor
Anode is connected, and the cathode of the third capacitor is connected with 6 feet of the first driving chip, first driving chip
11 feet be connected with anode, the DC power supply of one end of the 4th capacitor, the 5th capacitor, the 4th capacitor it is another
It holds, the cathode of the 5th capacitor has ground wire to be connected, 3 feet of the second driving chip and one end, the second diode of the 6th capacitor
Anode, the 7th capacitor anode, DC power supply be connected, the cathode of the other end of the 6th capacitor, the 7th capacitor
It is connected with ground wire, the cathode of second diode is connected with the anode of 7 feet of the second driving chip, the 8th capacitor
It connects, the cathode of the 8th capacitor is connected with 6 feet of the second driving chip, 11 feet of second driving chip and
One end of nine capacitors, the anode of the tenth capacitor, DC power supply are connected, the other end, the tenth capacitor of the 9th capacitor
Cathode there is ground wire to be connected；8 feet of first driving chip are the first output end of drive module, the first driving core
1 foot of piece makees the second output terminal of drive module, and 8 feet of the second driving chip are the third output end of drive module, and second drives
1 foot of dynamic chip is the 4th output end of drive module；14 feet of first driving chip are the first defeated of drive module
Enter end, 12 feet of the first driving chip make the second input terminal of drive module, and 14 feet of the second driving chip are drive module
Third input terminal, 12 feet of the second driving chip are the 4th input terminal of drive module, and 6 feet of first driving chip are
First floating ground terminal of drive module, the second floating ground terminal of 6 foot drive modules of second driving chip.
Preferably, the detection module includes for the voltage detection module of detection output voltage, for detection stream
The current detection module of switch element electric current and the temperature detecting module for detecting temperature in inversion unit in inversion unit.
Preferably, the voltage detection module includes the 19th resistance, one end of the 9th resistance and inversion list
The output end of member is connected, and the other end of the 9th resistance is connected with 1 foot of the first adjustable resistance, 2 feet, and described first can
2 feet of resistance and 3 feet are adjusted to be parallel with eleventh resistor, the 12nd capacitor, 3 feet and ground wire of first adjustable resistance connect
Connect, the other end of the 9th resistance is connected with one end of twelfth resistor, the other end of the twelfth resistor with
The voltage detection terminal of controller is connected；The temperature detecting module includes temperature sensor, the temperature sensor
One end be connected with DC power supply, the other end of the temperature sensor and one end, the 14th resistance of thirteenth resistor
One end, the 37th resistance one end be connected, the thirteenth resistor is parallel with the 13rd capacitor, the described the tenth
The other end of three resistance, the 37th resistance the other end be connected with ground wire, the other end of the 14th resistance with
Temperature detection terminal on controller is connected；The current detection module includes sampling resistor and is made of LM393 chip
Current detecting chip, one end of the sampling resistor is connected with one end of inversion unit, the 16th resistance, and described adopts
The other end of sample resistance is connected with ground wire, 5 feet of the other end of the 16th resistance and current detecting chip, 3 feet, the
One end of 17 resistance, one end of the 18th resistance, the 36th resistance one end be connected, the 36th resistance it is another
End is connected with the current sense terminal on one end of the 18th capacitor, controller, the other end of the 18th resistance,
The other end of 17 resistance is connected with drive module, the other end and current detecting core of the 17th resistance
7 feet of piece, one end of the 19th resistance, the 14th capacitor one end be connected, the other end, the electricity of the 19th resistance
8 feet of stream detection chip are connected with DC power supply, and the other end of the 14th capacitor is connected with ground wire, described
The other end of 18th resistance is connected with one end of 1 foot of current detecting chip, one end of the 20th resistance, the 15th capacitor
It connects, the other end of the 20th resistance is connected with DC power supply, the other end of the 15th capacitor, current detecting
4 feet of chip are connected with ground wire, one end of 6 feet of current detecting chip and the 21st resistance, the 22nd resistance
One end is connected, and the other end of the 21st resistance is connected with DC power supply, and the 22nd resistance is simultaneously
It is associated with the 16th capacitor, the other end of the 22nd resistance is connected with ground wire, 2 feet of the current detecting chip
Be connected with one end of one end of the 23rd resistance, the 24th resistance, the other end of the 23rd resistance with
DC power supply is connected, and the 24th resistor coupled in parallel has the 17th capacitor, the other end of the 24th resistance
It is connected with ground wire.
Preferably, the inversion unit include first switch tube, second switch, third switching tube, the 4th switching tube,
Filter inductance and filter capacitor, the drain electrode of the first switch tube, the drain electrode of second switch are connected with DC power supply,
The grid of the first switch tube is connected with one end of the 25th resistance, the other end of the 25th resistance with
The cathode of third diode, the first output end of drive module are connected, the anode and the 20th of the third diode
One end of six resistance is connected, and the one of the source electrode of the other end of the 26th resistance and first switch tube, filter inductance
It holds, the drain electrode of the first floating ground terminal, third switching tube of drive module is connected, the other end of the filter inductance
Be connected with one end of filter capacitor, the drain electrode of the other end of the filter capacitor and the 4th switching tube, drive module
Two floating ground terminals, second switch source electrode be connected, one end of the grid of second switch and the 27th resistance
It is connected, the other end of the 27th resistance is connected with the cathode of the third output end of drive module, the 4th diode, institute
The anode for the 4th diode stated is connected with one end of the 28th resistance, the other end of the 28th resistance and the
The source electrode of two switching tubes is connected, and the open the light grid of pipe of the third is connected with one end of the 29th resistance, described
The other end of 29th resistance is connected with the cathode of the second output terminal of drive module, the 5th diode, and described
The anode of five diodes is connected with one end of the 30th resistance, the other end and the third switching tube of the 30th resistance
Source electrode, the 4th switching tube source electrode be connected, the grid of the 4th switching tube is connected with one end of the 31st resistance
It connecing, the other end of the 31st resistance is connected with the cathode of the 4th output end of drive module, the 6th diode,
6th diode anode be connected with one end of the 32nd resistance, the other end of the 32nd resistance and
The source electrode of 4th open pipe is connected, and the source electrode of the 4th switching tube is connected with one end of the sampling resistor of detection module,
The other end of sampling resistor is connected with ground wire.
Preferably, the inversion unit is additionally provided with radiator, and the radiator includes fan and NPN type
One end of 5th triode, the fan is connected with DC power supply, the other end of the fan and the described the 5th 3
The collector of pole pipe is connected, and the emitter of the 5th triode is connected with ground wire, the base of the 5th triode
Pole is connected with one end of the 33rd resistance, is provided with fan control terminal on the controller, and the described the 33rd
The other end of resistance is connected with the fan control terminal.
Compared with prior art, this practical advantage is to control drive module by controller and disconnecting switch
System, can protect controller, reduce controller and driver is directly connected to a possibility that bring controller is burnt, together
When the exchange that inversion unit can be exported of the detection module that is arranged be monitored and the alternating current progress by controller to output
Adjustment, detection module include power detecting, current detecting and temperature detection, and the detection of voltage and current has ensured the exchange of output
The reliability of electricity, reduces first switch tube in inverter circuit, second switch, third switching tube and the 4th to the detection of temperature
A possibility that switching tube is burnt, when high in the temperature of inversion unit, the resistance temperature sensor being made of thermistor reduces,
When resistance is lower than setting value, controller control fan rotation radiates to inversion unit, Zeng Qiang inverter circuit it is reliable
Property.
Detailed description of the invention
Fig. 1 is the inverter circuit work block diagram of the utility model；
Fig. 2 is the controller of the utility model and the circuit connection diagram of disconnecting switch；
Fig. 3 is the circuit connection diagram of the drive module of the utility model；
Fig. 4 is the circuit connection diagram of the inversion unit of the utility model；
Fig. 5 is the inverter circuit integrated circuit connection figure of the utility model.
Specific embodiment
The utility model is described in further detail below in conjunction with figure embodiment.
As shown in the picture, a kind of inverter circuit further retouches the utility model work below in conjunction with figure embodiment in detail
It states.
As shown in the picture, a kind of inverter circuit, including DC power supply；
The controller U1 being connect with DC power supply；
The disconnecting switch being connect with controller U1；
The drive module being connect with DC power supply and disconnecting switch；
The inversion unit being connect with DC power supply and drive module；
The detection module being connect with DC power supply, controller U1 and inversion unit.
DC power supply includes the second source V2 that the first power supply V1 that voltage is 5V, voltage are 12V and to need inversion be friendship
The third power supply V3 of galvanic electricity, the cathode of the first power supply V1, the cathode of second source V2, third power supply V3 cathode be connected and be
Ground wire, the first power supply V1 provide electric energy for controller U1, detection module, and second source V2 provides electric energy, third for drive module
Power supply V3 provides electric energy for inversion unit, and the third power supply V3 electric energy provided is reverse into alternating current by inversion unit.
Controller U1 is made of EG8010 chip and its peripheral circuit, is connected on controller U1 and is used to indicate inverter circuit
The indicator light D7 of working condition, indicator light D7 are made of the cathode of light emitting diode and the 8 foot phases of controller U1 light emitting diode
Even, the anode of light emitting diode is connected with one end of the 34th resistance R34, the other end and first of the 34th resistance R34
Power supply V1 is connected, and 6 feet of controller U1 are connected with one end of the 35th resistance R35, and the 35th resistance R35's is another
End is connected with the first power supply V1,3 feet of controller U1,4 feet, 9 feet, 12 feet, 16 feet, 19 feet, 23 feet, 32 feet with ground wire phase
Connection, 13 feet of controller U1 are voltage detection terminal, and 14 feet of controller U1 are current sense terminal, 15 feet of controller U1
For temperature detection terminal, 17 feet, 26 feet of controller U1 are connected with the first power supply V1,26 feet of controller U1 and the 19th
One end of capacitor C19, the positive of the 20th capacitor C20 are connected, the other end, the 20th capacitor C20 of the 19th capacitor C19
Cathode be connected with ground wire, 10 feet of controller U1 are connected with one end of one end of crystal oscillator Y1, the 21st capacitor C21
It connects, 11 feet of controller U1 are connected with one end of the other end of crystal oscillator Y1, the 22nd capacitor C22, the 21st capacitor
The other end of C21, the 22nd capacitor C22 the other end be connected with ground wire, 30 feet of controller U1 are controller U1's
First lead-out terminal, second output terminal that 29 feet of controller U1 are controller U1,28 feet of controller U1 are controller U1
Third output terminal, 27 feet of controller U1 are the 4th output terminal of controller U1.
Disconnecting switch includes the first triode Q1 for being positive-negative-positive, the second triode Q2, third transistor Q3 and the four or three
Pole pipe Q4, the model 2SA115 of the first triode Q1, the second triode Q2, third transistor Q3 and the 4th triode Q4, the
The emitter of one triode Q1 is connected with one end of the first output end of controller U1, first resistor R1, the second triode Q2
Emitter be connected with one end of the second output terminal of controller U1, second resistance R2, the other end of first resistor R1 and
The base stage of two triode Q2 is connected, and the other end of second resistance R2 is connected with the base stage of the first triode Q1, the one or three pole
The collector of pipe Q1 is connected with one end of the first input end of drive module, 3rd resistor R3, the collection of the second triode Q2
Electrode is connected with one end of the second input terminal of drive module, the 4th resistance R4, the other end of 3rd resistor R3, the 4th electricity
The other end of resistance R4 is connected with ground wire；The emitter of third transistor Q3 and third output end, the 5th electricity of controller U1
The one end for hindering R5 is connected, emitter and the 4th output end of controller U1, one end of the 6th resistance R6 of the 4th triode Q4
It is connected, the other end of the 5th resistance R5 is connected with the base stage of the 4th triode Q4, the other end and third of the 6th resistance R6
The base stage of triode Q3 is connected, the third input terminal of the collector of third transistor Q3 and drive module, the 7th resistance R7
One end is connected, and the collector and the 4th input terminal of drive module of the 4th triode Q4, one end of the 8th resistance R8 are homogeneous
Connection, the other end of the 7th resistance R7, the other end of the 8th resistance R8 are connected with ground wire.
Drive module includes identical first driving chip U2 and the second driving chip U3, the first driving chip U2 and second
Driving chip U3 is made of EG2113S chip, 3 feet of the first driving chip U2 and one end, the one or two pole of first capacitor C1
The anode of pipe D1, the anode of the second capacitor C2, second source V2 are connected, the other end of first capacitor C1, the second capacitor C2
Cathode be connected with ground wire, the anode of 7 feet of the cathode of first diode D1 and the first driving chip U2, third capacitor C3
It is connected, the cathode of third capacitor C3 is connected with 6 feet of the first driving chip U2,11 feet of the first driving chip U2 and
One end of four capacitor C4, the anode of the 5th capacitor C5, the first power supply V1 are connected, the other end of the 4th capacitor C4, the 5th electricity
The cathode for holding C5 has ground wire to be connected, one end of 3 feet of the second driving chip U3 and the 6th capacitor C6, the second diode D2
Anode, the anode of the 7th capacitor C7, second source V2 are connected, the cathode of the other end of the 6th capacitor C6, the 7th capacitor C7
It is connected with ground wire, the cathode of the second diode D2 is connected with the anode of 7 feet of the second driving chip U3, the 8th capacitor C8
It connects, the cathode of the 8th capacitor C8 is connected with 6 feet of the second driving chip U3,11 feet and the 9th capacitor of the second driving chip U3
One end of C9, the anode of the tenth capacitor C10, the first power supply V1 are connected, the other end, the tenth capacitor C10 of the 9th capacitor C9
Cathode there is ground wire to be connected；8 feet of first driving chip U2 are the first output end of drive module, the first driving chip U2
1 foot make the second output terminal of drive module, 8 feet of the second driving chip U3 are the third output end of drive module, and second drives
1 foot of dynamic chip U3 is the 4th output end of drive module；14 feet of first driving chip U2 are the first input of drive module
End, 12 feet of the first driving chip U2 make the second input terminal of drive module, and 14 feet of the second driving chip U3 are drive module
Third input terminal, 12 feet of the second driving chip U3 are the 4th input terminal of drive module, and 6 feet of the first driving chip U2 are
First floating ground terminal of drive module, the second floating ground terminal of the 6 foot drive modules of the second driving chip U3, first
2 feet, 15 feet of driving chip U2 are connect with ground wire, and 2 feet, 15 feet of the second driving chip U3 are connected with ground wire.
Detection module includes opening for the voltage detection module of detection output voltage, for detecting to flow through in inversion unit
Close the current detection module of element current and the temperature detecting module for detecting temperature in inversion unit.
Voltage detection module includes the 9th resistance R9, and one end of the 9th resistance R9 is connected with the output end of inversion unit, the
The other end of nine resistance R9 is connected with 1 foot of the first adjustable resistance R10,2 feet, and 2 feet of the first adjustable resistance R10 are in parallel with 3 feet
There are eleventh resistor R11, the 12nd capacitor C12,3 feet of the first adjustable resistance R10 are connect with ground wire, and the 9th resistance R9's is another
End is connected with one end of twelfth resistor R12, the voltage detection terminal of the other end of twelfth resistor R12 and controller U1,
One end of 25th capacitor C25 is connected；Temperature detecting module includes temperature sensor RT1, and the one of temperature sensor RT1
End is connected with the first power supply V1, the other end of temperature sensor RT1 and one end, the 14th resistance R14 of thirteenth resistor R13
One end, the 37th resistance R37 one end be connected, thirteenth resistor R13 is parallel with the 13rd capacitor C13, the 13rd
The other end of resistance R13, the other end of the 25th capacitor C25, the 37th resistance R37 the equal ground wire of the other end be connected,
The other end of 14th resistance R14 is connected with one end of temperature detection terminal, the 23rd capacitor C23 on controller U1
It connects, the other end of the 23rd capacitor C23 is connected with ground wire；Current detection module includes sampling resistor R15 and by LM393 core
The source electrode of the 4th switching tube V4 of one end and inversion unit of current detecting chip U4, sampling resistor R15 that piece is constituted, the 16th
One end of resistance R16 is connected, and the other end of sampling resistor R15 is connected with ground wire, the other end and electricity of the 16th resistance R16
Flow 5 feet, 3 feet, one end of the 17th resistance R17, one end of the 18th resistance R18, the 36th resistance R36 of detection chip U4
One end, the 24th capacitor C24 one end be connected, the other end of the 36th resistance R36 and the 18th capacitor C18's
Current sense terminal on one end, controller U1 is connected, the other end of the 18th capacitor C18, the 24th capacitor C24
The other end is connected with ground wire, and the other end of the 18th resistance R18 is connected with 13 feet of the first driving chip U1, the 17th electricity
The other end of resistance R17 is connected with 13 feet of the second driving chip U2, the other end and current detecting core of the 17th resistance R17
7 feet of piece U4, one end of the 19th resistance R19, the 14th capacitor C14 one end be connected, the 19th resistance R19's is another
End, current detecting chip U4 8 feet be connected with the first power supply V1, the other end of the 14th capacitor C14 is connected with ground wire,
The other end of 18th resistance R18 and 1 foot, one end of the 20th resistance R20, the 15th capacitor C15 of current detecting chip U4
One end be connected, the other end of the 20th resistance R20 is connected with the first power supply V1, the other end of the 15th capacitor C15,
4 feet of current detecting chip U4 are connected with ground wire, one end of 6 feet of current detecting chip U4 and the 21st resistance R21,
One end of 22nd resistance R22 is connected, and the other end of the 21st resistance R21 is connected with the first power supply V1, and second
12 resistance R22 are parallel with the 16th capacitor C16, and the other end of the 22nd resistance R22 is connected with ground wire, current detecting core
2 feet of piece U4 are connected with one end of one end of the 23rd resistance R23, the 24th resistance R24, the 23rd resistance
The other end of R23 is connected with the anode of the 26th capacitor C26, the first power supply V1, the cathode of the 26th capacitor C26,
The other end of 24th resistance R24 is connected with ground wire, and the 24th resistance R24 is parallel with the 17th capacitor C17, and second
16 capacitor C26 are parallel with the 27th capacitor C27.
Inversion unit includes first switch tube V1, second switch V2, third switching tube V3, the 4th switching tube V4, filtering
Inductance L1 and filter capacitor C11, first switch tube V1, second switch V2, third switching tube V3, the 4th switching tube V4 are
The switch element of IRF840 model, the drain electrode of first switch tube V1, the drain electrode of second switch V2 are connected with third power supply V3
Connect, the grid of first switch tube V1 is connected with one end of the 25th resistance R25, the other end of the 25th resistance R25 with
The cathode of third diode D3, the first output end of drive module are connected, the anode and the 26th of third diode D3
One end of resistance R26 is connected, the source electrode of the other end of the 26th resistance R26 and first switch tube V1, filter inductance L1
The drain electrode of first floating ground terminal, third switching tube V3 of one end, drive module is connected, the other end of filter inductance L1
It is connected with one end of filter capacitor C11, the drain electrode of the other end of filter capacitor C11 and the 4th switching tube V4, drive module
Second floating ground terminal, second switch V2 source electrode be connected, the grid of second switch V2 and the 27th resistance
One end of R27 is connected, the third output end of the other end of the 27th resistance R27 and drive module, the 4th diode D4
Cathode is connected, and the anode of the 4th diode D4 is connected with one end of the 28th resistance R28, the 28th resistance R28
The other end be connected with the source electrode of second switch V2, the grid of third switching tube V3 and one end of the 29th resistance R29
It is connected, the other end of the 29th resistance R29 is connected with the cathode of the second output terminal of drive module, the 5th diode D5
It connects, the anode of the 5th diode D5 is connected with one end of the 30th resistance R30, the other end and third of the 30th resistance R30
The source electrode of switching tube V3, the 4th switching tube V4 source electrode be connected, the grid and the 31st resistance 31 of the 4th switching tube V4
One end be connected, the cathode of the 4th output end of the other end of the 31st resistance 31 and drive module, the 6th diode D6
It is connected, the anode of the 6th diode D6 is connected with one end of the 32nd resistance R32, and the 32nd resistance R32's is another
One end is connected with the source electrode of the 4th switching tube V4, and the one of the sampling resistor R15 of the source electrode and detection module of the 4th switching tube V4
End is connected, and the other end of sampling resistor R15 is connected with ground wire, and the both ends of filter capacitor C11 are the output end of inversion unit.
Inversion unit is additionally provided with radiator, and radiator includes the 5th triode Q5 of fan F1 and NPN type, fan
One end of F1 is connected with second source V2, and the other end of fan F1 is connected with the collector of the 5th triode Q5, and the five or three
The emitter of pole pipe Q5 is connected with ground wire, and the base stage of the 5th triode Q5 is connected with one end of the 33rd resistance R33, control
Fan F1 control terminal is provided on device U1 processed, the other end of the 33rd resistance R33 is connected with fan F1 control terminal.
The working principle of the utility model are as follows: DC power supply connect after for controller U1, detection module, drive module and inverse
Becoming unit and electric energy is provided, controller U1 exports PWM wave and control to disconnecting switch and then control drive module, so that
Drive module output PWM wave controls the shutdown of the conducting of the switch element in inversion unit, the switch in inversion unit
Element discontinuous conduction makes the electric energy of DC supply input inversion unit in alternating directions, finally realizes inversion.
The specially course of work are as follows: after the first power supply V1, second source V2 are connected with third power supply V3, the first power supply V1 is connect
Enter controller U126 foot, current detecting chip U48 foot, providing electric energy for its controller U1 and current detecting chip U4 keeps it normal
Work, while the first power supply V1 accesses 11 feet of the first driving chip U2 and 11 feet of the second driving chip U3 and as in chip
Logical circuit power use；3 feet of 3 feet and the second driving chip U3 that second source V2 accesses the first driving chip U2 are it
Electric energy is provided, drive module is enable to work normally, second source V2 accesses the 7 of the first driving chip U2 by first diode D1
Foot, second source V2 access 7 feet of the second driving chip U3 by the second diode D2；Third power supply V3 accesses first switch tube
The drain electrode of V1 and the drain electrode of second switch V2 wait inversion.
After DC power supply is connected, the second output terminal and third output end of controller U1 exports identical PWM wave, controller
The first output end of U1 and the 4th output end export identical PWM wave, so that the second triode Q2's and third transistor Q3 leads
Logical off state is identical, and the conducting off state of the first triode Q1 and the 4th triode Q4 are identical, and the first triode Q1 and
Second triode Q2 is connected in turn, i.e., when the second output terminal of controller U1 and third output end output high level, same to time control
The first output end of device U1 processed and the 4th output end export low level, and the second triode Q2 and third transistor Q3 are connected, and first
Triode Q1 and the 4th triode Q4 shutdown；When the second output terminal of controller U1 and third output end output low level, together
When controller U1 the first output end and the 4th output end export high level, the second triode Q2 and third transistor Q3 shutdown,
First triode Q1 and the 4th triode Q4 conducting.
When the second output terminal and third output end of controller U1 export high level i.e. the second triode Q2 and the three or three pole
When pipe Q3 is connected, the third input of the second input terminal of drive module and drive module is high level, at this time drive module
First switch tube V1 is connected in first output end output high level, and the 4th output end of drive module output high level makes the
Four switching tube V4 conducting, the voltage of third power supply V3 passes sequentially through first switch tube V1, filter inductance L1, filter capacitor at this time
C11, the 4th switching tube V4, sampling resistor R15, ground wire are simultaneously formed into a loop；Then controller U1 changes the conducting shape of disconnecting switch
State, i.e. the first output end of controller U1 and the 4th output end output high level i.e. the first triode Q1 and the 4th triode Q4 are led
When logical, the first input end of drive module and the 4th input of drive module are high level, and the second of drive module is defeated at this time
Third switching tube V3 is connected in outlet output high level, and the third output end output high level of drive module makes second switch
Pipe V2 conducting, the voltage of third power supply V3 passes sequentially through second switch V2, filter capacitor C11, filter inductance L1, third at this time
Switching tube V3, sampling resistor R15, ground wire are simultaneously formed into a loop；Above-mentioned state is successively carried out by controller U1 control, finally to filter
The voltage positive and negative anodes at the both ends wave capacitor C11 are alternately present to realize inversion.
When DC power supply is connected, detection module works, one end of the 9th resistance R9 of voltage detection module and filtered electrical
Hold C11 to be connected, the other end of the 9th resistance R9 is connected with the first adjustable resistance R10 and eleventh resistor R11, and the 11st
The other end of resistance R11, the first adjustable resistance R10 3 feet connect with ground wire, when inverter has output, controller U1 warp
It crosses twelfth resistor R12 and obtains sampled voltage from the other end of the 9th resistance R9, and according to sampled voltage to the first triode Q1
It is adjusted to realize the control to inversion unit with the turn-on time of the second triode Q2.
When inversion unit has output, one end of sampling resistor R15 has voltage presence, and controller U1 passes through the 16th electricity
Resistance R16 detects the voltage of sampling resistor R15, and 5 feet and 3 feet of voltage access current detecting chip U4, and respectively
It is compared in the voltage of current detecting chip U46 foot and 2 feet, when the voltage value of inversion unit output is more than setting voltage value
When i.e. electric current is larger, the voltage of the one end sampling resistor R15 is increased, so that 5 feet of current detecting chip U4 and the voltage of 3 feet are more than
The voltage of current detecting chip U46 foot and 2 feet, 1 foot of current detecting chip U4 and 7 feet export high level at this time, and at this time
13 feet of 13 feet of one driving chip U2 and the second driving chip U3 are high level, so that the first output end of drive module,
4th output end of the second output terminal of drive module, the third output end of drive module and drive module stops exporting, inverse
Become unit and stops inversion；When 5 feet of current detecting chip U4 and the voltage of 3 feet are lower than the electricity of current detecting chip U46 foot and 2 feet
When pressure, drive module is worked normally.
When the inverter circuit works normally, the temperature sensor RT1 that is made of NTC type thermistor by year inversion unit
The temperature change change resistance value, when the temperature increases, the resistance value of temperature sensor RT1 is smaller, at this time the temperature of controller U1
The voltage for spending detection terminal by the 37th one end resistance R37 of the 14th resistance R14 detection is higher, when temperature is more than setting
When value, that is, voltage that arrives of controller U1 temperature detection terminal test is when being more than setting value, 7 feet of controller U1 device export high level,
So that the 5th triode Q5 conducting fan F1 is started turning to inversion unit through radiating；When controller U1 detects failure
When, 8 feet of controller U1 export circulation output high level and low level, so that indicator light D7 flashing is to the event to inverter circuit
Barrier is indicated.
Claims (9)
1. a kind of inverter circuit, which is characterized in that the inverter circuit includes
DC power supply；
The controller being connect with the DC power supply；
The disconnecting switch being connect with the controller；
The drive module being connect with the DC power supply and the disconnecting switch；
The inversion unit being connect with the DC power supply and the drive module；
The detection module being connect with the DC power supply, controller and inversion unit.
2. a kind of inverter circuit as described in claim 1, which is characterized in that the DC power supply includes the first power supply, the
Two power supplys and third power supply, first power supply provide electric energy, the second source for the controller, detection module
Electric energy is provided for drive module, and the third power supply provides electric energy for inversion unit, and the inversion unit is by third power supply
The electric energy of offer is reverse into alternating current.
3. a kind of inverter circuit as described in claim 1, which is characterized in that the controller is by EG8010 chip and its outside
Circuit composition is enclosed, is connected with the indicator light for being used to indicate inverter circuit working condition on the controller.
4. a kind of inverter circuit as described in claim 1, which is characterized in that the disconnecting switch include be positive-negative-positive
First triode, the second triode, third transistor and the 4th triode, the emitter and controller of first triode
The first output end, first resistor one end be connected, the second output of the emitter of second triode and controller
End, one end of second resistance are connected, and the other end of the first resistor is connected with the base stage of the second triode, described
The other end of second resistance is connected with the base stage of the first triode, the collector of first triode and drive module
First input end, 3rd resistor one end be connected, the second of the collector of second triode and drive module is defeated
Enter end, the 4th resistance one end be connected, the other end of the 3rd resistor, the 4th resistance the other end with ground wire phase
Connection；The emitter of the third transistor is connected with one end of the third output end of controller, the 5th resistance, described
The emitter of 4th triode is connected with one end of the 4th output end of controller, the 6th resistance, the 5th resistance
The other end is connected with the base stage of the 4th triode, and the other end of the 6th resistance is connected with the base stage of third transistor
It connects, the collector of the third transistor is connected with one end of the third input terminal of drive module, the 7th resistance, described
The collector of the 4th triode be connected with one end of the 4th input terminal of drive module, the 8th resistance, the described the 7th
The other end of resistance, the 8th resistance the other end be connected with ground wire.
5. a kind of inverter circuit as described in claim 1, which is characterized in that the drive module includes identical first drive
Dynamic chip and the second driving chip, first driving chip and the second driving chip are made of EG2113S chip, and first
3 feet of driving chip are connected with the positive equal, DC power supply of one end of first capacitor, the anode of first diode, the second capacitor
Connect, the other end of the first capacitor, the second capacitor cathode be connected with ground wire, the cathode of the first diode
It is connected with the anode of 7 feet of the first driving chip, third capacitor, the cathode and the first driving chip of the third capacitor
6 feet be connected, one end of 11 feet of first driving chip and the 4th capacitor, the 5th capacitor anode, DC power supply
It is connected, the other end of the 4th capacitor, the cathode of the 5th capacitor have ground wire to be connected, and the 3 of the second driving chip
Foot is connected with one end of the 6th capacitor, the anode of the second diode, the anode of the 7th capacitor, DC power supply, and described
The other end of six capacitors, the 7th capacitor cathode be connected with ground wire, the cathode of second diode and second driving
7 feet of chip, the anode of the 8th capacitor are connected, and the cathode of the 8th capacitor is connected with 6 feet of the second driving chip
It connecing, 11 feet of second driving chip are connected with anode, the DC power supply of one end of the 9th capacitor, the tenth capacitor,
The other end of 9th capacitor, the cathode of the tenth capacitor have ground wire to be connected；8 feet of first driving chip are
First output end of drive module, 1 foot of the first driving chip make the second output terminal of drive module, and the 8 of the second driving chip
Foot is the third output end of drive module, and 1 foot of the second driving chip is the 4th output end of drive module；Described first drives
14 feet of dynamic chip are the first input end of drive module, and 12 feet of the first driving chip make the second input terminal of drive module,
14 feet of the second driving chip are the third input terminal of drive module, and 12 feet of the second driving chip are the 4th defeated of drive module
Enter end, 6 feet of first driving chip are the first floating ground terminal of drive module, second driving chip
Second floating ground terminal of 6 foot drive modules.
6. a kind of inverter circuit as described in claim 1, which is characterized in that the detection module includes for detecting output
It holds the voltage detection module of voltage, flow through in inversion unit the current detection module of switch element electric current and for examining for detecting
Survey the temperature detecting module of temperature in inversion unit.
7. a kind of inverter circuit as claimed in claim 6, which is characterized in that the voltage detection module includes the 9th electricity
Resistance, one end of the 9th resistance are connected with the output end of inversion unit, and the other end and first of the 9th resistance can
1 foot of resistance, 2 feet is adjusted to be connected, 2 feet and 3 feet of first adjustable resistance are parallel with eleventh resistor, the 12nd capacitor,
3 feet of first adjustable resistance are connect with ground wire, the other end and one end phase of twelfth resistor of the 9th resistance
Connection, the other end of the twelfth resistor are connected with the voltage detection terminal of controller；The temperature detecting module
Including temperature sensor, one end of the temperature sensor is connected with DC power supply, the temperature sensor it is another
End is connected with one end of one end of thirteenth resistor, one end of the 14th resistance, the 37th resistance, and the described the 13rd
Resistor coupled in parallel has the 13rd capacitor, the other end of the thirteenth resistor, the 37th resistance the other end with ground wire phase
Connection, the other end of the 14th resistance are connected with the temperature detection terminal on controller；The current detecting mould
Block includes sampling resistor and the current detecting chip that is made of LM393 chip, one end of the sampling resistor and inversion unit,
One end of 16th resistance is connected, and the other end of the sampling resistor is connected with ground wire, the 16th resistance
5 feet, 3 feet, one end of the 17th resistance, one end of the 18th resistance, the 36th resistance of the other end and current detecting chip
One end be connected, the electric current on one end of the other end of the 36th resistance and the 18th capacitor, controller is examined
Terminal is surveyed to be connected, the other end of the 18th resistance, 17 resistance the other end with drive module phase
Connection, the other end and 7 feet of current detecting chip, one end of the 19th resistance, the 14th capacitor of the 17th resistance
One end be connected, the other end of the 19th resistance, 8 feet of current detecting chip are connected with DC power supply,
The other end of 14th capacitor is connected with ground wire, the other end and the current detecting chip of the 18th resistance
1 foot, one end of the 20th resistance, the 15th capacitor one end be connected, the other end and direct current of the 20th resistance
Power supply is connected, and the other end of the 15th capacitor, 4 feet of current detecting chip are connected with ground wire, current detecting
6 feet of chip are connected with one end of one end of the 21st resistance, the 22nd resistance, the 21st resistance
The other end is connected with DC power supply, and the 22nd resistor coupled in parallel has the 16th capacitor, the 22nd resistance
The other end be connected with ground wire, 2 feet of the current detecting chip and one end, the 24th resistance of the 23rd resistance
One end be connected, the other end of the 23rd resistance is connected with DC power supply, the 24th resistance
It is parallel with the 17th capacitor, the other end of the 24th resistance is connected with ground wire.
8. a kind of inverter circuit as described in claim 1, which is characterized in that the inversion unit include first switch tube,
Second switch, third switching tube, the 4th switching tube, filter inductance and filter capacitor, the drain electrode of the first switch tube,
The drain electrode of two switching tubes is connected with DC power supply, one end phase of the grid of the first switch tube and the 25th resistance
Connection, the other end of the 25th resistance are connected with the first output end of the cathode of third diode, drive module
Connect, the third diode anode be connected with one end of the 26th resistance, the 26th resistance it is another
End with the source electrode of first switch tube, one end of filter inductance, drive module the first floating ground terminal, third switching tube leakage
Extremely be connected, the other end of the filter inductance is connected with one end of filter capacitor, the filter capacitor it is another
End is connected with the source electrode of the drain electrode of the 4th switching tube, the second floating ground terminal of drive module, second switch, and second
The grid of switching tube is connected with one end of the 27th resistance, and the other end of the 27th resistance and the third of drive module are defeated
Outlet, the 4th diode cathode be connected, the 4th diode anode be connected with one end of the 28th resistance
It connects, the other end of the 28th resistance is connected with the source electrode of second switch, and the third is opened the light the grid of pipe
It is connected with one end of the 29th resistance, the second output terminal of the other end of the 29th resistance and drive module,
The cathode of 5th diode is connected, and the anode of the 5th diode is connected with one end of the 30th resistance, described
The other end of the 30th resistance be connected with the source electrode of the source electrode of third switching tube, the 4th switching tube, the described the 4th opens
The grid for closing pipe is connected with one end of the 31st resistance, and the of the other end of the 31st resistance and drive module
Four output ends, the 6th diode cathode be connected, anode and one end of the 32nd resistance of the 6th diode
It is connected, the other end of the 32nd resistance is connected with the source electrode of the 4th open pipe, the source of the 4th switching tube
Pole is connected with one end of the sampling resistor of detection module, and the other end of sampling resistor is connected with ground wire.
9. a kind of inverter circuit as described in claim 1, which is characterized in that the inversion unit is additionally provided with heat dissipation dress
It sets, the radiator includes the 5th triode of fan and NPN type, and one end of the fan is connected with DC power supply
It connects, the other end of the fan is connected with the collector of the 5th triode, the transmitting of the 5th triode
Pole is connected with ground wire, and the base stage of the 5th triode is connected with one end of the 33rd resistance, the controller
On be provided with fan control terminal, the other end of the 33rd resistance is connected with the fan control terminal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822268269.4U CN209345028U (en) | 2018-12-29 | 2018-12-29 | A kind of inverter circuit |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822268269.4U CN209345028U (en) | 2018-12-29 | 2018-12-29 | A kind of inverter circuit |
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| Publication Number | Publication Date |
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| CN209345028U true CN209345028U (en) | 2019-09-03 |
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| CN201822268269.4U Expired - Fee Related CN209345028U (en) | 2018-12-29 | 2018-12-29 | A kind of inverter circuit |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112135395A (en) * | 2020-10-27 | 2020-12-25 | 深圳远致富海智能产业有限公司 | LED lamp light source module and LED machine that moults based on a plurality of different wavelength |
| CN112688380A (en) * | 2020-12-14 | 2021-04-20 | 广州引派旺汽车用品有限公司 | Automobile emergency starting power supply |
-
2018
- 2018-12-29 CN CN201822268269.4U patent/CN209345028U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112135395A (en) * | 2020-10-27 | 2020-12-25 | 深圳远致富海智能产业有限公司 | LED lamp light source module and LED machine that moults based on a plurality of different wavelength |
| CN112688380A (en) * | 2020-12-14 | 2021-04-20 | 广州引派旺汽车用品有限公司 | Automobile emergency starting power supply |
| CN112688380B (en) * | 2020-12-14 | 2023-05-30 | 广州引派旺汽车用品有限公司 | Emergency starting power supply for automobile |
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