CN206592290U - A kind of electrical compressor power protection circuit - Google Patents
A kind of electrical compressor power protection circuit Download PDFInfo
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- CN206592290U CN206592290U CN201720231615.4U CN201720231615U CN206592290U CN 206592290 U CN206592290 U CN 206592290U CN 201720231615 U CN201720231615 U CN 201720231615U CN 206592290 U CN206592290 U CN 206592290U
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- switch module
- triode
- output end
- resistance
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Abstract
The utility model provides a kind of electrical compressor power protection circuit, including：First switch module, second switch module, the 3rd switch module, first resistor, second resistance, 3rd resistor, Acquisition Circuit unit, microprocessor.The Acquisition Circuit unit by first switch module and first resistor the U of motor compressor is connected line end carry out voltage acquisition, the Acquisition Circuit unit carries out voltage acquisition by second switch module and second resistance to the V terminals of motor compressor, the Acquisition Circuit unit carries out voltage acquisition by the 3rd switch module and 3rd resistor to the W terminals of motor compressor, when the voltage that the Acquisition Circuit unit is exported is more than given threshold, the microprocessor controls the first switch module, the energization of the second switch module and the 3rd switch module deenergization bus and motor compressor.The utility model can improve the safety and reliability of motor compressor operation.
Description
Technical field
The utility model is related to technical field of automotive electronics, more particularly to a kind of electrical compressor power protection circuit.
Background technology
With the fast development of China's new-energy automobile, the main electronic parts on automobile have also obtained quick development
One of core component such as electric automobile.Electric scroll compressor its not only on vehicle be responsible for driving cabin cooling simultaneously with
The design update of vehicle is also responsible for the cooling of battery pack, and criticality is self-evident, so the reliable and peace of motor compressor
Full property is exactly a very important content in design.It is current that to motor compressor, whether overpower mainly passes through hall device
Detected, this mode has that testing cost is higher, and circuit volume is larger detection signal easily occur to bus current
Accumulated error, cause that the immediate current of circuit can not be accurately obtained in real time, exist protection delay phenomenon.
Utility model content
The utility model provides a kind of electrical compressor power protection circuit, solves existing compressor horsepower protection circuit and deposits
The problem of protection is delayed, detects inaccurate, the safety and reliability of motor compressor operation is improved.
To realize object above, the utility model provides following technical scheme：
A kind of electrical compressor power protection circuit, including：First switch module, second switch module, the 3rd switching molding
Block, first resistor, second resistance, 3rd resistor, Acquisition Circuit unit, microprocessor；
The input of the first switch module is connected with power source bus, the first output end of the first switch module with
The U of motor compressor connects, and line end is connected, and the second output end of the first switch module is connected with one end of first resistor, institute
State the other end ground connection of first resistor；
The input of the second switch module is connected with power source bus, the first output end of the second switch module with
The V of motor compressor connects, and line end is connected, and the second output end of the second switch module is connected with one end of second resistance, institute
State the other end ground connection of second resistance；
The input of 3rd switch module is connected with power source bus, the first output end of the 3rd switch module with
The W of motor compressor connects, and line end is connected, and the second output end of the 3rd switch module is connected with one end of 3rd resistor, institute
State the other end ground connection of 3rd resistor；
The input of the Acquisition Circuit unit respectively with the first resistor, the second resistance and the 3rd resistor
One end be connected, the output end of the Acquisition Circuit unit is connected with the input of the microprocessor；
When the voltage that the Acquisition Circuit unit is exported is more than given threshold, the microprocessor control described first is opened
Close the energization of module, the second switch module and the 3rd switch module deenergization bus and motor compressor.
It is preferred that, the first switch module includes：First triode and the second triode；
The colelctor electrode of first triode is used as the input of the first switch module, the hair of first triode
Emitter-base bandgap grading is connected with the colelctor electrode of second triode, and the emitter stage of first triode is also as the first switch module
The first output end, the emitter stage of second triode as the first switch module the second output end.
It is preferred that, the second switch module includes：3rd triode and the 4th triode；
The colelctor electrode of 3rd triode is used as the input of the second switch module, the hair of the 3rd triode
Emitter-base bandgap grading is connected with the colelctor electrode of the 4th triode, and the emitter stage of the 3rd triode is also as the second switch module
The first output end, the emitter stage of the 4th triode as the second switch module the second output end.
It is preferred that, the 3rd switch module includes：5th triode and the 6th triode；
The colelctor electrode of 5th triode is used as the input of the 3rd switch module, the hair of the 5th triode
Emitter-base bandgap grading is connected with the colelctor electrode of the 6th triode, and the emitter stage of the 5th triode is also as the 3rd switch module
The first output end, the emitter stage of the 6th triode as the 3rd switch module the second output end.
It is preferred that, the Acquisition Circuit unit includes：Booster circuit, voltage follower, clamp circuit, AD analog-to-digital conversion modules；
The normal phase input end of the voltage follower is used as the input of the Acquisition Circuit unit, the voltage follower
Output end of the normal phase input end also with the booster circuit be connected, the output end of the voltage follower turns with the AD moduluses
The input for changing the mold block is connected, and the output end of the AD analog-to-digital conversion modules is used as the output end of the Acquisition Circuit unit, institute
State clamp circuit and clamper protection is carried out to the voltage of the output end output of the voltage follower.
It is preferred that, the booster circuit includes：4th resistance and the 5th resistance；
One end of 4th resistance is connected with reference power supply, the other end and the 5th resistance of the 4th resistance
One end is connected, the other end of the 5th resistance ground connection, the other end of the 4th resistance as the booster circuit output end.
It is preferred that, the clamp circuit includes：First diode and the second diode, the anode of first diode with
Ground is connected, and the negative electrode of first diode is connected with the anode of second diode, the negative electrode of second diode with
Reference power supply is connected.
The utility model provides a kind of electrical compressor power protection circuit, by respectively to the phase connection of motor compressor three
The input voltage at end is detected, when any phase voltage is more than given threshold, the power supply of motor compressor is cut off, to realize electricity
The protection of dynamic compressor.It solves the problem of existing compressor horsepower protection circuit has protection delay, detects inaccurate, improves
The safety and reliability of motor compressor operation.
Brief description of the drawings
, below will be attached to what is used required in embodiment in order to illustrate more clearly of specific embodiment of the utility model
Figure is briefly described.
Fig. 1：It is a kind of structural representation for electrical compressor power protection circuit that the utility model is provided.
Reference
The triodes of Q1 first
The triodes of Q2 second
The triodes of Q3 the 3rd
The triodes of Q4 the 4th
The triodes of Q5 the 5th
The triodes of Q6 the 6th
R1 first resistors
R2 second resistances
R3 3rd resistors
The resistance of R4 the 4th
The resistance of R5 the 5th
U1 voltage followers
The diodes of D1 first
The diodes of D2 second
The U of U motor compressors connects line end
The V of V motor compressors connects line end
The W of W motor compressors connects line end
Embodiment
In order that 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 to the utility model embodiment.
Exist not in time for the circuit protection of current motor compressor, the problem of detecting inaccurate, the utility model is carried
For a kind of electrical compressor power protection circuit, by being examined respectively to the input voltage of motor compressor three-phase terminal
Survey, when any phase voltage is more than given threshold, cuts off the power supply of motor compressor, to realize the protection of motor compressor, carry
The safety and reliability of high motor compressor operation.
As shown in figure 1, a kind of electrical compressor power protection circuit, including：First switch module, second switch module,
3rd switch module, first resistor R1, second resistance R2,3rd resistor R3, Acquisition Circuit unit, microprocessor.Described first
The input of switch module is connected with power source bus, the first output end of the first switch module and the U phases of motor compressor
Terminals are connected, and the second output end of the first switch module is connected with first resistor R1 one end, and first resistor R1's is another
One end is grounded.The input of the second switch module is connected with power source bus, the first output end of the second switch module
It is connected with the V of the motor compressor line ends that connect, the second output end of the second switch module and second resistance R2 one end phase
Even, second resistance R2 other end ground connection.The input of 3rd switch module is connected with power source bus, the 3rd switch
First output end of module and the W of the motor compressor line end that connects are connected, the second output end of the 3rd switch module and the
Three resistance R3 one end is connected, 3rd resistor R3 other end ground connection.The input of the Acquisition Circuit unit is respectively with first
Resistance R1, second resistance R2 are connected with 3rd resistor R3 one end, output end and the microprocessor of the Acquisition Circuit unit
The input of device is connected.When the voltage that the Acquisition Circuit unit is exported is more than given threshold, the microprocessor controls institute
State the logical of first switch module, the second switch module and the 3rd switch module deenergization bus and motor compressor
Electricity.
Specifically, the voltage of motor compressor three-phase terminal is detected, motor compressor three-phase can be obtained each
From input voltage size.When the voltage for obtaining any phase in Acquisition Circuit unit is more than given threshold, microprocessor judges electricity
The input voltage exception of compressor is moved, it is necessary to cut off the energization of motor compressor, so that motor compressor is protected in time, is carried
The safety and reliability of high motor compressor operation.
As shown in figure 1, the first switch module includes：First triode Q1 and the second triode Q2.First triode
Q1 colelctor electrode is used as the input of the first switch module, the first triode Q1 emitter stage and the second triode Q2 collection
Electrode is connected, and the first triode Q1 emitter stage is also as the first output end of the first switch module, the second triode Q2
Emitter stage as the first switch module the second output end.
The second switch module includes：3rd triode Q3 and the 4th triode Q4.The collection of the 3rd triode Q3
Electrode is used as the input of the second switch module, the colelctor electrode phase of the 3rd triode Q3 emitter stage and the 4th triode Q4
Even, the 3rd triode Q3 emitter stage is also as the first output end of the second switch module, the 4th triode Q4 transmitting
Pole as the second switch module the second output end.
3rd switch module includes：5th triode Q5 and the 6th triode Q6.5th triode Q5 colelctor electrode
As the input of the 3rd switch module, the 5th triode Q5 emitter stage is connected with the 6th triode Q6 colelctor electrode,
5th triode Q5 emitter stage is also as the first output end of the 3rd switch module, and the 6th triode Q6 emitter stage is made
For the second output end of the 3rd switch module.
In actual applications, the base stage of each triode can be connected with the controlling switch of microprocessor, need to three
When pole pipe disconnects, it is only necessary to which corresponding pin is high level.It should be noted that first switch module, second switch
The triode of module and the 3rd switch module can also be replaced using metal-oxide-semiconductor, or other switch elements.
Further, the Acquisition Circuit unit includes：Booster circuit, voltage follower U1, clamp circuit, AD analog-to-digital conversions
Module.The normal phase input end of the voltage follower U1 is used as the input of the Acquisition Circuit unit, the voltage follower
Output end of the U1 normal phase input end also with the booster circuit is connected, the output end of the voltage follower U1 and the AD moulds
The input of number modular converters is connected, the output ends of the AD analog-to-digital conversion modules as the Acquisition Circuit unit output
End, the clamp circuit carries out clamper protection to the voltage of the output end output of the voltage follower U1.
In actual applications, AD analog-to-digital conversion modules and microprocessor can be integrated in a MCU module, wherein micro- place
It can be single-chip microcomputer or special acquisition chip group to manage device.
As shown in figure 1, the booster circuit includes：4th resistance R4 and the 5th resistance R5.4th resistance R4 one end with
Reference power supply is connected, and the 4th resistance R4 other end is connected with one end of the 5th resistance R5, the 5th resistance R5 other end
Ground connection, the 4th resistance R4 other end as the booster circuit output end.
The clamp circuit includes：First diode D1 and the second diode D2, the first diode D1 anode and ground phase
Even, the first diode D1 negative electrode is connected with the second diode D2 anode, the second diode D2 negative electrode and reference power supply
It is connected.
It can be seen that, the utility model provides a kind of electrical compressor power protection circuit, by respectively to motor compressor three
The input voltage of line end of connecting is detected, when any phase voltage is more than given threshold, cuts off the power supply of motor compressor, with
Realize the protection of motor compressor.It, which solves existing compressor horsepower protection circuit, has protection delay, detects inaccurate ask
Topic, improves the safety and reliability of motor compressor operation.
Construction of the present utility model, feature and action effect is described in detail according to diagrammatically shown embodiment above, with
Upper described is only preferred embodiment of the present utility model, but the utility model is not to limit practical range shown in drawing, it is every according to
According to the made change of conception of the present utility model, or the equivalent embodiment of equivalent variations is revised as, still without departing from specification and figure
, all should be in protection domain of the present utility model when showing covered spirit.
Claims (7)
1. a kind of electrical compressor power protection circuit, it is characterised in that including：First switch module, second switch module,
Three switch modules, first resistor, second resistance, 3rd resistor, Acquisition Circuit unit, microprocessor；
The input of the first switch module is connected with power source bus, the first output end of the first switch module with it is electronic
The U of the compressor line ends that connect are connected, and the second output end of the first switch module is connected with one end of first resistor, and described the
The other end ground connection of one resistance；
The input of the second switch module is connected with power source bus, the first output end of the second switch module with it is electronic
The V of the compressor line ends that connect are connected, and the second output end of the second switch module is connected with one end of second resistance, and described the
The other end ground connection of two resistance；
The input of 3rd switch module is connected with power source bus, the first output end of the 3rd switch module with it is electronic
The W of the compressor line ends that connect are connected, and the second output end of the 3rd switch module is connected with one end of 3rd resistor, and described the
The other end ground connection of three resistance；
The input of the Acquisition Circuit unit respectively with the first resistor, the second resistance and the 3rd resistor one
End is connected, and the output end of the Acquisition Circuit unit is connected with the input of the microprocessor；
When the voltage that the Acquisition Circuit unit is exported is more than given threshold, the microprocessor controls the first switch mould
The energization of block, the second switch module and the 3rd switch module deenergization bus and motor compressor.
2. protection circuit according to claim 1, it is characterised in that the first switch module includes：First triode
With the second triode；
The colelctor electrode of first triode is used as the input of the first switch module, the emitter stage of first triode
It is connected with the colelctor electrode of second triode, the emitter stage of first triode is also as the of the first switch module
One output end, the emitter stage of second triode as the first switch module the second output end.
3. protection circuit according to claim 2, it is characterised in that the second switch module includes：3rd triode
With the 4th triode；
The colelctor electrode of 3rd triode is used as the input of the second switch module, the emitter stage of the 3rd triode
It is connected with the colelctor electrode of the 4th triode, the emitter stage of the 3rd triode is also as the of the second switch module
One output end, the emitter stage of the 4th triode as the second switch module the second output end.
4. protection circuit according to claim 3, it is characterised in that the 3rd switch module includes：5th triode
With the 6th triode；
The colelctor electrode of 5th triode is used as the input of the 3rd switch module, the emitter stage of the 5th triode
It is connected with the colelctor electrode of the 6th triode, the emitter stage of the 5th triode is also as the of the 3rd switch module
One output end, the emitter stage of the 6th triode as the 3rd switch module the second output end.
5. protection circuit according to claim 4, it is characterised in that the Acquisition Circuit unit includes：Booster circuit, electricity
Press follower, clamp circuit, AD analog-to-digital conversion modules；
The normal phase input end of the voltage follower is as the input of the Acquisition Circuit unit, and the voltage follower is just
Output end of the phase input also with the booster circuit is connected, the output end of the voltage follower and the AD analog-to-digital conversions mould
The input of block is connected, and the output end of the AD analog-to-digital conversion modules is used as the output end of the Acquisition Circuit unit, the pincers
Position circuit carries out clamper protection to the voltage of the output end output of the voltage follower.
6. protection circuit according to claim 5, it is characterised in that the booster circuit includes：4th resistance and the 5th
Resistance；
One end of 4th resistance is connected with reference power supply, the other end of the 4th resistance and one end of the 5th resistance
Be connected, the other end of the 5th resistance ground connection, the other end of the 4th resistance as the booster circuit output end.
7. protection circuit according to claim 6, it is characterised in that the clamp circuit includes：First diode and
Two diodes, the anode of first diode is connected to the ground, the negative electrode of first diode and second diode
Anode is connected, and the negative electrode of second diode is connected with reference power supply.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720231615.4U CN206592290U (en) | 2017-03-10 | 2017-03-10 | A kind of electrical compressor power protection circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720231615.4U CN206592290U (en) | 2017-03-10 | 2017-03-10 | A kind of electrical compressor power protection circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206592290U true CN206592290U (en) | 2017-10-27 |
Family
ID=60123939
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720231615.4U Expired - Fee Related CN206592290U (en) | 2017-03-10 | 2017-03-10 | A kind of electrical compressor power protection circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206592290U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110159520A (en) * | 2019-06-28 | 2019-08-23 | 大唐半导体科技有限公司 | A kind of control circuit of air compressor machine |
-
2017
- 2017-03-10 CN CN201720231615.4U patent/CN206592290U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110159520A (en) * | 2019-06-28 | 2019-08-23 | 大唐半导体科技有限公司 | A kind of control circuit of air compressor machine |
| CN110159520B (en) * | 2019-06-28 | 2020-09-29 | 大唐半导体科技有限公司 | Control circuit of air compressor |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20171027 Termination date: 20200310 |
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| CF01 | Termination of patent right due to non-payment of annual fee |