CN207910678U - A kind of control circuit of car electric air conditioner compressor - Google Patents
A kind of control circuit of car electric air conditioner compressor Download PDFInfo
- Publication number
- CN207910678U CN207910678U CN201820394222.XU CN201820394222U CN207910678U CN 207910678 U CN207910678 U CN 207910678U CN 201820394222 U CN201820394222 U CN 201820394222U CN 207910678 U CN207910678 U CN 207910678U
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- capacitance
- output end
- power module
- switch power
- control
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- 238000002955 isolation Methods 0.000 claims abstract description 17
- 239000004065 semiconductor Substances 0.000 claims description 9
- 230000005611 electricity Effects 0.000 claims description 8
- 238000004804 winding Methods 0.000 claims description 6
- 239000011324 bead Substances 0.000 claims description 3
- 238000001914 filtration Methods 0.000 claims description 3
- 230000005855 radiation Effects 0.000 claims description 3
- 230000007704 transition Effects 0.000 claims description 3
- 238000004378 air conditioning Methods 0.000 description 7
- 238000011056 performance test Methods 0.000 description 5
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 230000008878 coupling Effects 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000005670 electromagnetic radiation Effects 0.000 description 2
- 238000002788 crimping Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000001939 inductive effect Effects 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
Abstract
The utility model provides a kind of control circuit of car electric air conditioner compressor, including：First filter circuit, switch power module, isolation feedback module and 12V accumulators.The first filter circuit input terminal is connected with the output end of the 12V accumulators, the output end of first filter circuit is connected with the input terminal of the switch power module, the output end of the switch power module is connected with the control terminal of the input terminal that feedback module is isolated and compressor of air conditioner respectively, and the output end of the isolation feedback module is connected with the control terminal of the switch power module.The control voltage that the isolation feedback module is used to export the switch power module is compared with setting voltage, and exports feedback signal.The control voltage swing that the switch power module is exported according to feedback signal adjustment.The utility model can reduce the electromagnetic interference of car electric air conditioner compressor generation.
Description
Technical field
The utility model is related to a kind of control of technical field of automotive electronics more particularly to car electric air conditioner compressor electricity
Road.
Background technology
With the continuous development of automobile, electric vehicle has become following development trend.It is continuous with electronic degree
It is promoted, the Electro Magnetic Compatibility (hereinafter referred to as EMC) of automobile also gradually enters into the visual field, and regulation is further stringent in addition, and electromagnetism is simultaneous
Rongcheng is the Main way that major main engine plants are promoted.Compared with orthodox car, New-energy electric vehicle increases electric air-conditioning pressure
The high pressures job notes such as contracting machine, driving motor system (including inverter and motor), DC to DC converter, Vehicular charger
Member.Since inside roominess is narrow, the electromagnetic radiation that each high voltage unit generates when working interferes with each other, to influence its normal fortune
Row.In order to enable the normal operation in complicated electromagnetic environment of the power electronic equipment inside New-energy electric vehicle, just answer
So that the electromagnetic radiation that these power electronic equipments generate is no more than a limit value, and these power electronic equipments is made to have enough
Electromagnetism anti-interference ability, to ensure that its normal runs.
Traditional vehicle-mounted air conditioner compressor is driven by motor pulley, can be worked not against power electronic devices, from
For the angle of electromagnetic compatibility, it neither will produce electromagnetic interference, will not be interfered by other elements.And new energy motor vapour
The low tension of the vehicle-mounted air conditioner compressor of vehicle is provided by 12V accumulators, and (is usually flyback switching electricity by power circuit
Source) it is converted to corresponding supply voltage, provide corresponding low-tension supply for low-voltage control circuit.High-voltage electricity is from onboard power electricity
Pond provides power output for it.
On the one hand, due to low-voltage power circuit the leading by switching tube of the electric air-conditioning of New-energy electric vehicle compression
Mutual switch transition logical, between shutdown is at the required supply voltage of low-voltage control circuit.When switching tube is in conducting and shutdown
It can make an uproar in switching tube both ends, transformer both ends and output rectifier diode both ends generation differential mode noise and common mode when mutually switching
Sound, noise signal can generate higher conducted emission and radiation-emitting along low voltage connector, low-voltage-powered harness.
On the other hand, the compressor of air conditioner of New-energy electric vehicle passes through high pressure by the high voltage electric energy that power battery provides
Inverter circuit provides power output for load.Since high-voltage inverter circuit is made of multiple injectron parallel connections, when it is being transported
Injectron conducting and the frequent switching of shutdown also result in the generation of differential mode noise and common-mode noise when row, and pass through height
It presses connector, high voltage power harness, compressor case to generate conducted emission and radiation-emitting, and then enhances the electromagnetism of electric vehicle
Interference, reduces its working performance.
Therefore, corresponding electromagnetic interference braking measure how is taken, compressor of air conditioner Electro Magnetic Compatibility is improved, keeps it full
The EMC performance tests of foot, have great importance.
Utility model content
The utility model puies forward a kind of control circuit of car electric air conditioner compressor, solves existing car electric air conditioner compression
Machine easily with the Electromagnetic Launching source of the power cord and control line composition complexity that connect, causes the Electro Magnetic Compatibility of automobile at work
Low problem can reduce the electromagnetic interference of car electric air conditioner compressor generation, automobile is made to meet EMC performance tests.
In order to achieve the above object, the utility model provides following technical scheme：
A kind of control circuit of car electric air conditioner compressor, including：First filter circuit, switch power module, isolation
Feedback module and 12V accumulators；
The first filter circuit input terminal is connected with the output end of the 12V accumulators, first filter circuit
Output end is connected with the input terminal of the switch power module, and the output end of the switch power module is isolated instead with described respectively
The input terminal of feedback module is connected with the control terminal of compressor of air conditioner, the output end of the isolation feedback module and the Switching Power Supply
The control terminal of module is connected；
The voltage that the switch power module is used to export 12V accumulators passes through the mutual switching between turn-on and turn-off
It is converted into the required control voltage of compressor of air conditioner；
The control voltage that the isolation feedback module is used to export the switch power module compares with setting voltage
Compared with, and export feedback signal；
The control voltage swing that the switch power module is exported according to feedback signal adjustment.
Preferably, further include：Second filter circuit and power battery；
The output end of the power battery high voltage input terminal phase with second filter circuit and compressor of air conditioner respectively
Even；Second filter circuit is for filtering out the radiation that power battery is conducted by high-voltage wiring harness.
Preferably, the switch power module includes：PWM control modules, switching tube and power transformer；
The switching tube input terminal is connected with the output end of the PWM control modules, the output end of the switching tube and institute
The control terminal for stating power transformer is connected, the input terminal of the input terminal of the power transformer as the switch power module,
Output end output as the switch power module of the output end of the power transformer as the switch power module
End, the control terminal of the input terminals of the PWM control modules as the switch power module；
The PWM control modules are used to export the pwm signal of different duty according to the feedback signal, are opened by described
The turn-on and turn-off for closing pipe switch to adjust the control voltage swing of the power transformer output.
Preferably, the PWM control modules are PWM wave controller.
Preferably, the switching tube is metal-oxide-semiconductor, and the input terminal of the grid of the metal-oxide-semiconductor as the switching tube is described
Output end of the drain electrode of metal-oxide-semiconductor as the switching tube.
Preferably, the switch power module further includes：Y capacitance unit, the Y capacitance unit are serially connected in the power supply and become
Between the poles N and the poles PE of depressor, the common mode interference of primary winding and secondary winding transformer for the power transformer.
Preferably, the Y capacitance unit includes：First capacitance and the second capacitance；
One end of first capacitance is extremely connected with the N of the power transformer, the other end of first capacitance and institute
The one end for stating the second capacitance is connected, and the other end of second capacitance is extremely connected with the PE of the power transformer.
Preferably, first filter circuit includes：First inductance and third capacitance；
First inductance is serially connected in the output end of the 12V accumulators, and one end and the 12V of the third capacitance store
The output end of battery is connected, and the other end of the third capacitance with vehicle is connected.
Preferably, first inductance uses magnetic bead.
Preferably, second filter circuit includes：4th capacitance, the 5th capacitance, the 6th capacitance, the 7th capacitance and the 8th
Capacitance；
4th capacitance series are between the cathode output end and cathode output end of the power battery, the 5th electricity
Hold and the 6th capacitance series are between the cathode output end and vehicle ground of the power battery, the 7th capacitance and described
8th capacitance series are between the cathode output end and vehicle ground of the power battery.
The utility model provides a kind of control circuit of car electric air conditioner compressor, passes through the height in compressor of air conditioner
Voltage input end adds filter circuit, solve existing car electric air conditioner compressor at work easily with the power cord and control that connect
The complicated Electromagnetic Launching source of line composition processed, the problem for causing the Electro Magnetic Compatibility of automobile low can reduce car electric air conditioner
The electromagnetic interference that compressor generates, makes automobile meet EMC performance tests.
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 controling circuit structure figure of car electric air conditioner compressor provided by the utility model；
Fig. 2：It is the control circuit schematic diagram for the electric air-conditioning compressor that the utility model embodiment provides；
Fig. 3：It is the connection circuit diagram of power battery and electric air-conditioning compressor that the utility model embodiment provides.
Reference numeral
11 switch power modules
The first inductance of L5
The first capacitances of C77
The second capacitances of C78
E13 third capacitances
The 4th capacitances of C91
The 5th capacitances of C83
The 6th capacitances of C84
The 7th capacitances of C85
The 8th capacitances of C86
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.
It is also easy to produce for the high voltage supply harness and low-voltage control signal line of the electric air-conditioning compressor of current electric vehicle
Electromagnetic interference.The utility model puies forward a kind of control circuit of car electric air conditioner compressor, passes through the height in compressor of air conditioner
Voltage input end adds filter circuit, solve existing car electric air conditioner compressor at work easily with the power cord and control that connect
The complicated Electromagnetic Launching source of line composition processed, the problem for causing the Electro Magnetic Compatibility of automobile low can reduce car electric air conditioner
The electromagnetic interference that compressor generates, makes automobile meet EMC performance tests.
As shown in Figure 1, be a kind of controling circuit structure figure of car electric air conditioner compressor provided by the utility model, it should
Circuit includes：First filter circuit, switch power module 11, isolation feedback module and 12V accumulators.First filter circuit
Input terminal is connected with the output end of the 12V accumulators, output end and the switch power module of first filter circuit
11 input terminal is connected, the output end of the switch power module 11 respectively with the input terminal and air-conditioning that feedback module is isolated
The control terminal of compressor is connected, and the output end of the isolation feedback module is connected with the control terminal of the switch power module.Institute
Voltage of the switch power module for exporting 12V accumulators is stated by the mutual switch transition between turn-on and turn-off into air-conditioning
The required control voltage of compressor.The control voltage that the isolation feedback module is used to export the switch power module 11
It is compared with setting voltage, and exports feedback signal.The switch power module 11 is adjusted according to the feedback signal and is exported
Control voltage swing.
In practical applications, conducting wire is the important coupling path of Conduction Interference, what the interference sources such as electric/electronic device generated
Electromagnetic interference can directly invade sensitive equipment by conducting wire or cable, or by capacitive coupling or inductive coupled enter control line
And signal wire, therefore this circuit is to increase filter circuit to compressor of air conditioner low pressure, input end, filters out external interference source and passes through line
Beam interferes compressor of air conditioner sensitive equipment hi-lo circuit plate and filters out compressor of air conditioner internal interference source to be conducted by harness
Influence other sensitive equipments.The electromagnetic interference that the generation of car electric air conditioner compressor can be reduced, improves the electromagnetism of electric vehicle
Compatible performance.
The circuit further includes：Second filter circuit and power battery；The output end of the power battery is respectively with described
Two filter circuits are connected with the high voltage input terminal of compressor of air conditioner；Second filter circuit passes through height for filtering out power battery
The radiation of crimping beam conduction.
Further, the switch power module includes：PWM control modules, switching tube and power transformer.The switching tube
Input terminal is connected with the output end of the PWM control modules, the control of the output end of the switching tube and the power transformer
End is connected, the input terminal of the input terminal of the power transformer as the switch power module, the power transformer it is defeated
Output end output end as the switch power module of the outlet as the switch power module, the PWM control modules
Control terminal of the input terminal as the switch power module.The PWM control modules are used to be exported according to the feedback signal
The pwm signal of different duty is switched by the turn-on and turn-off of the switching tube to adjust the power transformer output
Control voltage swing.
Further, the PWM control modules are PWM wave controller.In practical applications, PWM wave controller can be direct
Pwm signal is selected to control chip, such as：UC2845 or UCC3802.
The switching tube is metal-oxide-semiconductor, the input terminal of the grid of the metal-oxide-semiconductor as the switching tube, the leakage of the metal-oxide-semiconductor
Output end of the pole as the switching tube.
The switch power module further includes：Y capacitance unit, the Y capacitance unit are serially connected in the N of the power transformer
Between pole and the poles PE, the common mode interference of primary winding and secondary winding transformer for the power transformer.
As shown in Fig. 2, the Y capacitance unit includes：First capacitance C77 and the second capacitance C78.The first capacitance C77
One end be extremely connected with the N of the power transformer, the one of the other end of the first capacitance C77 and the second capacitance C78
End is connected, and the other end of the second capacitance C78 is extremely connected with the PE of the power transformer.
As shown in Fig. 2, first filter circuit includes：First inductance L5 and third capacitance E13；The first inductance L5
It is serially connected in the output end of the 12V accumulators, one end of the third capacitance E13 is connected with the output end of the 12V accumulators,
The other end of the third capacitance E13 with vehicle is connected.It should be noted that magnetic bead can be used in the first inductance L5.
As shown in figure 3, second filter circuit includes：4th capacitance C91, the 5th capacitance C83, the 6th capacitance C84,
Seven capacitance C85 and the 8th capacitance C86.The 4th capacitance C91 be serially connected in the power battery cathode output end and cathode it is defeated
Between outlet, the 5th capacitance C83 and the 6th capacitance C84 are serially connected in the cathode output end and vehicle of the power battery
Between ground, the 7th capacitance C85 and the 8th capacitance C86 are serially connected in the cathode output end of the power battery with vehicle
Between.
In practical applications, isolation feedback module includes：Comparison circuit and light-coupled isolation feedback circuit.The comparison circuit
Input terminal be connected with the output end of the switch power module, the output end of the comparison circuit and the light-coupled isolation are fed back
The light emitting diode output end of circuit is connected；The hair of the output end of the switch power module and the light-coupled isolation feedback circuit
Optical diode input terminal is connected.When the voltage of switch power module output is more than setting voltage, the comparison circuit is defeated
Go out low-voltage, the LEDs ON drives the optocoupler triode ON of the light-coupled isolation feedback circuit, output feedback
Signal gives PWM control modules.
As it can be seen that the utility model provides a kind of control circuit of car electric air conditioner compressor, by compressor of air conditioner
High-low voltage input terminal add filter circuit, solve existing car electric air conditioner compressor at work easily with the power supply that connect
The line Electromagnetic Launching source complicated with control line composition, the problem for causing the Electro Magnetic Compatibility of automobile low can reduce automobile electricity
The electromagnetic interference that dynamic compressor of air conditioner generates, makes automobile meet EMC performance tests.
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 (10)
1. a kind of control circuit of car electric air conditioner compressor, which is characterized in that including：First filter circuit, Switching Power Supply
Module, isolation feedback module and 12V accumulators；
The first filter circuit input terminal is connected with the output end of the 12V accumulators, the output of first filter circuit
End is connected with the input terminal of the switch power module, and feedback mould is isolated with described respectively in the output end of the switch power module
The input terminal of block is connected with the control terminal of compressor of air conditioner, the output end and the switch power module of the isolation feedback module
Control terminal be connected；
The voltage that the switch power module is used to export 12V accumulators passes through the mutual switch transition between turn-on and turn-off
At the required control voltage of compressor of air conditioner；
The control voltage that the isolation feedback module is used to export the switch power module is compared with setting voltage, and
Export feedback signal；
The control voltage swing that the switch power module is exported according to feedback signal adjustment.
2. control circuit according to claim 1, which is characterized in that further include：Second filter circuit and power battery；
The output end of the power battery is connected with the high voltage input terminal of second filter circuit and compressor of air conditioner respectively；Institute
The second filter circuit is stated for filtering out the radiation that power battery is conducted by high-voltage wiring harness.
3. control circuit according to claim 2, which is characterized in that the switch power module includes：PWM controls mould
Block, switching tube and power transformer；
The switching tube input terminal is connected with the output end of the PWM control modules, the output end of the switching tube and the electricity
The control terminal of source transformer is connected, the input terminal of the input terminal of the power transformer as the switch power module, described
Output end output end as the switch power module of the output end of power transformer as the switch power module, institute
State control terminal of the input terminal of PWM control modules as the switch power module；
The PWM control modules are used to export the pwm signal of different duty according to the feedback signal, pass through the switching tube
Turn-on and turn-off switch to adjust the control voltage swing of power transformer output.
4. control circuit according to claim 3, which is characterized in that the PWM control modules are PWM wave controller.
5. control circuit according to claim 4, which is characterized in that the switching tube is metal-oxide-semiconductor, the grid of the metal-oxide-semiconductor
Input terminal of the pole as the switching tube, the output end of the metal-oxide-semiconductor to drain as the switching tube.
6. control circuit according to claim 5, which is characterized in that the switch power module further includes：Y capacitance list
Member, the Y capacitance unit are serially connected between the poles N of the power transformer and the poles PE, are used for the primary of the power transformer
The common mode interference of winding and secondary winding transformer.
7. control circuit according to claim 6, which is characterized in that the Y capacitance includes：First capacitance and the second electricity
Hold；
One end of first capacitance is extremely connected with the N of the power transformer, the other end of first capacitance and described the
One end of two capacitances is connected, and the other end of second capacitance is extremely connected with the PE of the power transformer.
8. control circuit according to claim 7, which is characterized in that first filter circuit includes：First inductance and
Third capacitance；
First inductance is serially connected in the output end of the 12V accumulators, one end of the third capacitance and the 12V accumulators
Output end be connected, the other end of the third capacitance with vehicle is connected.
9. control circuit according to claim 8, which is characterized in that first inductance uses magnetic bead.
10. control circuit according to claim 9, which is characterized in that second filter circuit includes：4th capacitance,
5th capacitance, the 6th capacitance, the 7th capacitance and the 8th capacitance；
4th capacitance series between the cathode output end and cathode output end of the power battery, the 5th capacitance and
6th capacitance series are between the cathode output end and vehicle ground of the power battery, the 7th capacitance and the described 8th
Capacitance series are between the cathode output end and vehicle ground of the power battery.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820394222.XU CN207910678U (en) | 2018-03-22 | 2018-03-22 | A kind of control circuit of car electric air conditioner compressor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820394222.XU CN207910678U (en) | 2018-03-22 | 2018-03-22 | A kind of control circuit of car electric air conditioner compressor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207910678U true CN207910678U (en) | 2018-09-25 |
Family
ID=63559388
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820394222.XU Expired - Fee Related CN207910678U (en) | 2018-03-22 | 2018-03-22 | A kind of control circuit of car electric air conditioner compressor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207910678U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111045414A (en) * | 2019-11-28 | 2020-04-21 | 北汽福田汽车股份有限公司 | Control circuit and control device |
| CN112959964A (en) * | 2021-03-27 | 2021-06-15 | 华为技术有限公司 | Power supply system of motor control module and vehicle |
-
2018
- 2018-03-22 CN CN201820394222.XU patent/CN207910678U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111045414A (en) * | 2019-11-28 | 2020-04-21 | 北汽福田汽车股份有限公司 | Control circuit and control device |
| CN112959964A (en) * | 2021-03-27 | 2021-06-15 | 华为技术有限公司 | Power supply system of motor control module and vehicle |
| US11831264B2 (en) | 2021-03-27 | 2023-11-28 | Huawei Digital Power Technologies Co., Ltd. | Power supply system of motor control module and vehicle |
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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: 20180925 |
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| CF01 | Termination of patent right due to non-payment of annual fee |