CN208063053U - A kind of power circuit of automotive motor controller - Google Patents
A kind of power circuit of automotive motor controller Download PDFInfo
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- CN208063053U CN208063053U CN201820356582.0U CN201820356582U CN208063053U CN 208063053 U CN208063053 U CN 208063053U CN 201820356582 U CN201820356582 U CN 201820356582U CN 208063053 U CN208063053 U CN 208063053U
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Abstract
The utility model provides a kind of power circuit of automotive motor controller, including：Battery module, transformer, PWM control modules, switching circuit, voltage feedback module and current feedback module.The input terminal of the transformer is connected with the output end of the battery module, and the control terminal of the transformer is connected with the first output end of the switching circuit, the output end of the output end of the transformer as power circuit.The output end of the PWM control modules is connected with the input terminal of the switching circuit, the first input end of the PWM control modules is connected with the output end of the voltage feedback module, second input terminal of the PWM control modules is connected with the output end of the current feedback module, the input terminal of the voltage feedback module is connected with the output end of the transformer, and the input terminal of the current feedback module is connected with the second output terminal of the switching circuit.The utility model can improve the output stability of vehicle power supply circuit.
Description
Technical field
The utility model is related to technical field of automotive electronics more particularly to a kind of power circuits of automotive motor controller.
Background technology
Under the background that low-carbon economy becomes the mainstream of the times, electric vehicle becomes the Main way of current development of automobile.?
In electric vehicle, the stability of electric machine controller power supply part is considerable to electric machine controller.Motor control at present
The power supply circuit of device processed is exported frequently with Switching Power Supply.It is exported as the input of Switching Power Supply, by opening using accumulator
Powered-down source is transformed to the operating voltage that control panel and power amplifier board need.Its main process is：High voltage direct current is by switching tube
It opens and is converted to DC pulse voltage signal with turn off process, be then input to high frequency transformer；The multiple secondary of high frequency transformer
Winding becomes multi-channel DC electricity after inducing high frequency voltage rectification, exports the voltage needed for multigroup electric machine controller.But when defeated
When voltage fluctuation occurs for the DC power supply entered, the modulating transformation circuit output that may result in Switching Power Supply is unstable, serious shadow
Ring the stability of electric machine controller work.Therefore, how the voltage of high-pressure system is converted into low-pressure system supply voltage, and
Ensure securely and reliably continually and steadily, there is important research significance.
Utility model content
The utility model provides a kind of power circuit of automotive motor controller, solves existing automobile to electric machine controller
Supply voltage easily by the voltage variations affect of input power, causes the problem that supply voltage is unstable, can improve automobile power source electricity
The output stability on road increases the safety of automobile.
In order to achieve the above object, the utility model provides following technical scheme：
A kind of power circuit of automotive motor controller, including：Battery module, transformer, PWM control modules, switch electricity
Road, voltage feedback module and current feedback module；
The input terminal of the transformer is connected with the output end of the battery module, the control terminal of the transformer with it is described
First output end of switching circuit is connected, the output end of the output end of the transformer as power circuit；
The output end of the PWM control modules is connected with the input terminal of the switching circuit, and the of the PWM control modules
One input terminal is connected with the output end of the voltage feedback module, the second input terminal and the electric current of the PWM control modules
The output end of feedback module is connected；
The input terminal of the voltage feedback module is connected with the output end of the transformer, and the voltage feedback module is used for
The output voltage feedback signal when the voltage of the transformer output end is more than setting voltage；
The input terminal of the current feedback module is connected with the second output terminal of the switching circuit, the current feedback mould
Block is used for the output current feedback signal when the electric current of the transformer inputs is more than setting electric current；
Pwm signal of the PWM control modules for exporting different duty according to the voltage feedback signal, and according to
The current feedback signal controls being turned on or off for the switching circuit.
Preferably, the switching circuit includes：Metal-oxide-semiconductor, first resistor and second resistance；
The grid of the metal-oxide-semiconductor is connected with one end of one end of the first resistor and the second resistance respectively, described
First output end of the drain electrode as the switching circuit of metal-oxide-semiconductor, the source electrode of the metal-oxide-semiconductor as the switching circuit second
Output end, the input terminal of the other end of the first resistor as the switching circuit, the other end of the second resistance with it is whole
Vehicle it is connected.
Preferably, the current feedback module includes：3rd resistor, the 4th resistance, the 5th resistance, the 6th resistance, the 7th
Resistance and the first capacitance；
The 3rd resistor, the 4th resistance, the 5th resistance and the connection of the 6th resistor coupled in parallel, one end of the 6th resistance are made
The other end for the input terminal of the current feedback module, the 6th resistance with vehicle is connected, and the one of the 6th resistance
End is also connected with one end of the 7th resistance, the output of the other end of the 7th resistance as the current feedback module
End, the other end of the 7th resistance are also connected with one end of first capacitance, the other end and vehicle of first capacitance
Ground is connected.
Preferably, the voltage feedback module includes：Bleeder circuit, voltage comparator circuit and light-coupled isolation feedback circuit；
Input terminal of the input terminal of the bleeder circuit as the voltage feedback module, the output end of the bleeder circuit
It is connected with the input terminal of the voltage comparator circuit, the output end of the voltage comparator circuit and the light-coupled isolation feedback circuit
Control terminal be connected, the output end of the output end of the light-coupled isolation feedback circuit as the voltage feedback module.
Preferably, the bleeder circuit includes：8th resistance and the 9th resistance；
Input terminal of the one end of 8th resistance as the bleeder circuit, the other end of the 8th resistance with it is described
One end of 9th resistance is connected, and the other end of the 9th resistance with vehicle is connected, one end also conduct of the 9th resistance
The output end of the bleeder circuit.
Preferably, the voltage comparator circuit includes：Adjustable shunt reference source；
Input terminal of the reference edge of the adjustable shunt reference source as the voltage comparator circuit, the adjustable shunt base
The input terminal in quasi- source with vehicle is connected, the output of the output end of the adjustable shunt reference source as the voltage comparator circuit
End；
The adjustable shunt reference source is used to export when the voltage that the bleeder circuit exports is more than setting reference voltage
High level signal.
Preferably, the adjustable shunt reference source is TL431 model voltage sources.
Preferably, the light-coupled isolation feedback circuit includes：Photoelectrical coupler.
Preferably, the PWM control modules include：Pwm chip, the pwm chip are UC2845.
The utility model provides a kind of power circuit of automotive motor controller, defeated to transformer using voltage feedback module
The voltage gone out is adjusted, and is controlled using the voltage that current feedback module inputs transformer, and existing automobile pair is solved
The supply voltage of electric machine controller easily by the voltage variations affect of input power, causes the problem that supply voltage is unstable, can carry
The output stability of high vehicle power supply circuit increases the safety of automobile.
Description of the drawings
It, below will be to needed in the embodiment attached in order to illustrate more clearly of specific embodiment of the utility model
Figure is briefly described.
Fig. 1：It is a kind of circuit construction of electric power schematic diagram of automotive motor controller provided by the utility model；
Fig. 2：It is the power circuit schematic diagram that the utility model embodiment provides.
Reference numeral：
OUT transformer output ends
U1 pwm chips
U2 photoelectrical couplers
T1 adjustable shunt reference sources
Q1 metal-oxide-semiconductors
R1 first resistors
R2 second resistances
R3 3rd resistors
The 4th resistance of R4
The 5th resistance of R5
The 6th resistance of R6
The 7th resistance of R7
The 8th resistance of R8
The 9th resistance of R9
The first capacitances of C1
Specific implementation mode
In order to make those skilled in the art more fully understand the scheme of the utility model embodiment, below in conjunction with the accompanying drawings and
Embodiment is described in further detail the utility model embodiment.
For the power supply often motor control caused by the voltage change of battery supply of the electric machine controller of current power automobile
The unstable problem of device supply voltage.The utility model provides a kind of power circuit of automotive motor controller, anti-by voltage
The voltage that feedback module exports transformer is adjusted, and is controlled using the voltage that current feedback module inputs transformer
System causes the problem that supply voltage is unstable to the supply voltage of electric machine controller easily by the voltage variations affect of input power,
The output stability that vehicle power supply circuit can be improved increases the safety of automobile.
As shown in Figure 1, be a kind of circuit construction of electric power schematic diagram of automotive motor controller provided by the utility model, it should
Circuit includes：Battery module, transformer, PWM control modules, switching circuit, voltage feedback module and current feedback module.It is described
The input terminal of transformer is connected with the output end of the battery module, and the of the control terminal of the transformer and the switching circuit
One output end is connected, the output end of the output end of the transformer as power circuit.The output end of the PWM control modules with
The input terminal of the switching circuit is connected, the output of the first input end and the voltage feedback module of the PWM control modules
End is connected, and the second input terminal of the PWM control modules is connected with the output end of the current feedback module.The Voltage Feedback
The input terminal of module is connected with the output end of the transformer, and the voltage feedback module is used in the transformer output end
Output voltage feedback signal when voltage is more than setting voltage.The of the input terminal of the current feedback module and the switching circuit
Two output ends are connected, and the current feedback module is used for the output electricity when the electric current of the transformer inputs is more than setting electric current
Flow feedback signal.The PWM control modules are used to export the pwm signal of different duty according to the voltage feedback signal, and
Being turned on or off for the switching circuit is controlled according to the current feedback signal.
Specifically, the input terminal of transformer is connected with the output end of battery module, transformer
Control terminal is connected with the first output end of switching circuit, and when switching circuit is connected, transformer is powered, in switch electricity
When road disconnects, transformer power-off.PWM control modules lead on and off by output pwm signal control switching circuit
It opens, in the voltage feedback signal for receiving high level, at this point, the voltage that transformer secondary output generates is more than sets requirement, PWM controls
Molding block changes the electric voltage frequency of primary coil by adjusting the duty ratio of pwm signal, and the voltage of secondary coil is made to be dropped
It is low, and then the voltage for making transformer export keeps stablizing.When receiving current feedback signal more than setting voltage threshold, at this time
Transformer inputs have excessive transient current, may be damaged the component of transformer or switching circuit, PWM control modules
By controlling being turned on or off for switching circuit, to reduce the voltage of transformer inputs, to protect circuit element.
As shown in Fig. 2, the switching circuit includes：Metal-oxide-semiconductor Q1, first resistor R1 and second resistance R2.The metal-oxide-semiconductor Q1
Grid be connected respectively with one end of one end of the first resistor R1 and the second resistance R2, the drain electrode of the metal-oxide-semiconductor Q1
As the first output end of the switching circuit, the second output terminal of the source electrode of the metal-oxide-semiconductor Q1 as the switching circuit, institute
State input terminal of the other end of first resistor R1 as the switching circuit, the other end of the second resistance R2 with vehicle phase
Even.In practical applications, NMOS tube can be used in metal-oxide-semiconductor.
As shown in Fig. 2, the current feedback module includes：3rd resistor R3, the 4th resistance R4, the 5th resistance R5, the 6th
Resistance R6, the 7th resistance R7 and the first capacitance C1.The 3rd resistor R3, the 4th resistance R4, the 5th resistance R5 and the 6th resistance
R6 is connected in parallel, the input terminal of one end of the 6th resistance R6 as the current feedback module, the 6th resistance R6's
The other end with vehicle is connected, and one end of the 6th resistance R6 is also connected with one end of the 7th resistance R7, and the described 7th
Output end of the other end of resistance R7 as the current feedback module, the other end of the 7th resistance R7 is also with described first
One end of capacitance C1 is connected, and the other end of the first capacitance C1 with vehicle is connected.
In practical applications, when metal-oxide-semiconductor is connected, if the electric current flowed through gradually increases, and in R3, R4, R5, R6 parallel connection
The pressure drop that circuit generates is more than setting voltage threshold, and PWM control modules make metal-oxide-semiconductor Q1 end at this time.
The voltage feedback module includes：Bleeder circuit, voltage comparator circuit and light-coupled isolation feedback circuit.The partial pressure
Input terminal of the input terminal of circuit as the voltage feedback module, the output end of the bleeder circuit and the voltage are more electric
The input terminal on road is connected, and the output end of the voltage comparator circuit is connected with the control terminal of the light-coupled isolation feedback circuit, institute
State output end of the output end of light-coupled isolation feedback circuit as the voltage feedback module.
As shown in Fig. 2, the bleeder circuit includes：8th resistance R8 and the 9th resistance R9.The one of the 8th resistance R8
The input terminal as the bleeder circuit, the other end of the 8th resistance R8 is held to be connected with one end of the 9th resistance R9,
The other end of the 9th resistance R9 with vehicle is connected, and one end of the 9th resistance R9 is also as the defeated of the bleeder circuit
Outlet.
In practical applications, bleeder circuit may be diversified forms
Further, the voltage comparator circuit includes：Adjustable shunt reference source T1, the ginseng of the adjustable shunt reference source T1
Input terminal of the end as the voltage comparator circuit is examined, the input terminal of the adjustable shunt reference source with vehicle is connected, described
Output end of the output end of adjustable shunt reference source as the voltage comparator circuit.The adjustable shunt reference source is used in institute
High level signal is exported when stating the voltage of bleeder circuit output more than setting reference voltage.It should be noted that voltage is more electric
Voltage comparator also can be used to realize that voltage compares in road.In practical applications, TL431 can be used in the adjustable shunt reference source
Model voltage source.
The light-coupled isolation feedback circuit includes：Photoelectrical coupler U2, when the light emitting diode of photoelectrical coupler is lighted,
Photodiode is connected, and feedback voltage signal gives PWM control modules.
Further, the PWM control modules include：Pwm chip U1, the pwm chip are UC2845.
As it can be seen that the utility model provides a kind of power circuit of automotive motor controller, using voltage feedback module to becoming
The voltage of depressor output is adjusted, and is controlled using the voltage that current feedback module inputs transformer, is solved existing
Automobile easily by the voltage variations affect of input power, causes supply voltage is unstable to ask the supply voltage of electric machine controller
Topic, can improve the output stability of vehicle power supply circuit, increase the safety of automobile.
The structure, feature and effect of the utility model are described in detail according to diagrammatically shown embodiment above, with
Upper described is only the preferred embodiment of the utility model, but the utility model is to limit practical range shown in drawing, it is every according to
Change made by conception according to the utility model, or be revised as the equivalent embodiment of equivalent variations, still without departing from specification and figure
When showing covered spirit, it should be within the protection scope of the present utility model.
Claims (8)
1. a kind of power circuit of automotive motor controller, which is characterized in that including：Battery module, transformer, PWM control mould
Block, switching circuit, voltage feedback module and current feedback module；
The input terminal of the transformer is connected with the output end of the battery module, the control terminal of the transformer and the switch
First output end of circuit is connected, the output end of the output end of the transformer as power circuit；
The output end of the PWM control modules is connected with the input terminal of the switching circuit, and the first of the PWM control modules is defeated
Enter end with the output end of the voltage feedback module to be connected, the second input terminal and the current feedback of the PWM control modules
The output end of module is connected；
The input terminal of the voltage feedback module is connected with the output end of the transformer, and the voltage feedback module is used in institute
The voltage for stating transformer output end is more than output voltage feedback signal when setting voltage；
The input terminal of the current feedback module is connected with the second output terminal of the switching circuit, and the current feedback module is used
The output current feedback signal when electric current in the transformer inputs is more than setting electric current；
The PWM control modules are used to export the pwm signal of different duty according to the voltage feedback signal, and according to described
Current feedback signal controls being turned on or off for the switching circuit；
The switching circuit includes：Metal-oxide-semiconductor, first resistor and second resistance；
The grid of the metal-oxide-semiconductor is connected with one end of one end of the first resistor and the second resistance respectively, the metal-oxide-semiconductor
First output end of the drain electrode as the switching circuit, the source electrode of the metal-oxide-semiconductor exports as the second of the switching circuit
End, the input terminal of the other end of the first resistor as the switching circuit, the other end of the second resistance is with vehicle
It is connected.
2. power circuit according to claim 1, which is characterized in that the current feedback module includes：3rd resistor,
Four resistance, the 5th resistance, the 6th resistance, the 7th resistance and the first capacitance；
The 3rd resistor, the 4th resistance, the 5th resistance and the connection of the 6th resistor coupled in parallel, one end of the 6th resistance is as institute
The input terminal of current feedback module is stated, the other end of the 6th resistance with vehicle is connected, and one end of the 6th resistance is also
It is connected with one end of the 7th resistance, the output end of the other end of the 7th resistance as the current feedback module, institute
The other end for stating the 7th resistance is also connected with one end of first capacitance, the other end of first capacitance with vehicle phase
Even.
3. power circuit according to claim 2, which is characterized in that the voltage feedback module includes：Bleeder circuit, electricity
Press comparison circuit and light-coupled isolation feedback circuit；
Input terminal of the input terminal of the bleeder circuit as the voltage feedback module, the output end of the bleeder circuit and institute
The input terminal for stating voltage comparator circuit is connected, the control of the output end of the voltage comparator circuit and the light-coupled isolation feedback circuit
End processed is connected, the output end of the output end of the light-coupled isolation feedback circuit as the voltage feedback module.
4. power circuit according to claim 3, which is characterized in that the bleeder circuit includes：8th resistance and the 9th
Resistance；
Input terminal of the one end of 8th resistance as the bleeder circuit, the other end and the described 9th of the 8th resistance
One end of resistance is connected, and the other end of the 9th resistance with vehicle is connected, and one end of the 9th resistance is also as described
The output end of bleeder circuit.
5. power circuit according to claim 4, which is characterized in that the voltage comparator circuit includes：Adjustable shunt base
Quasi- source；
Input terminal of the reference edge of the adjustable shunt reference source as the voltage comparator circuit, the adjustable shunt reference source
Input terminal with vehicle be connected, the output end of the output end of the adjustable shunt reference source as the voltage comparator circuit；
The adjustable shunt reference source is used for the high electricity of output when the voltage that the bleeder circuit exports is more than setting reference voltage
Ordinary mail number.
6. power circuit according to claim 5, which is characterized in that the adjustable shunt reference source is TL431 model electricity
Potential source.
7. power circuit according to claim 6, which is characterized in that the light-coupled isolation feedback circuit includes：Photoelectricity coupling
Clutch.
8. power circuit according to claim 7, which is characterized in that the PWM control modules include：Pwm chip,
The pwm chip is UC2845.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820356582.0U CN208063053U (en) | 2018-03-15 | 2018-03-15 | A kind of power circuit of automotive motor controller |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820356582.0U CN208063053U (en) | 2018-03-15 | 2018-03-15 | A kind of power circuit of automotive motor controller |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208063053U true CN208063053U (en) | 2018-11-06 |
Family
ID=63988674
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820356582.0U Expired - Fee Related CN208063053U (en) | 2018-03-15 | 2018-03-15 | A kind of power circuit of automotive motor controller |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208063053U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109818483A (en) * | 2019-03-28 | 2019-05-28 | 南京桐润新能源有限公司 | A kind of vehicle-mounted transducer voltage circular current ring intelligence fast switch circuit |
-
2018
- 2018-03-15 CN CN201820356582.0U patent/CN208063053U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109818483A (en) * | 2019-03-28 | 2019-05-28 | 南京桐润新能源有限公司 | A kind of vehicle-mounted transducer voltage circular current ring intelligence fast switch circuit |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20181106 |
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| CF01 | Termination of patent right due to non-payment of annual fee |