CN208656677U - Air Condition Compressor for Electric Vehicle PMSM Drive System - Google Patents
Air Condition Compressor for Electric Vehicle PMSM Drive System Download PDFInfo
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- CN208656677U CN208656677U CN201821385840.4U CN201821385840U CN208656677U CN 208656677 U CN208656677 U CN 208656677U CN 201821385840 U CN201821385840 U CN 201821385840U CN 208656677 U CN208656677 U CN 208656677U
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Abstract
The utility model relates to field of automobile air conditioner, it is related to a kind of Air Condition Compressor for Electric Vehicle PMSM Drive System, including microprocessor (MCU), communication module, power module, current acquisition module and power driver module, by managing and being used to drive the IGBT drive module of IGBT pipe to be encapsulated as power driver module (i.e. IPM) IGBT, the power drive control to Air Condition Compressor for Electric Vehicle permanent magnet synchronous motor can be realized using an IPM, this IPM has the function of signal isolation without additional isolation chip, substantially reduce component the space occupied volume, the complexity for designing structure substantially reduces.
Description
Technical field
The utility model relates to field of automobile air conditioner, same in particular to a kind of Air Condition Compressor for Electric Vehicle permanent magnetism
Walk motor driven systems.
Background technique
Electric car electric air-conditioning system is a kind of auxiliary system for directly relying on motor drive, is represent following novel
The developing direction of automobile air conditioning technology.
With the rise of new-energy automobile industry and the raising of people's quality of life, people are to the reliable of new-energy automobile
More stringent requirements are proposed for the performances such as property, comfort and energy conservation and environmental protection, and the quality of electric automobile air conditioner be determine it is comfortable by bus
One of an important factor for property.
Traditional Air Condition Compressor for Electric Vehicle permanent magnet synchronous motor drive circuit system mostly uses greatly discrete component to carry out
It builds, the volume that on the one hand will cause product is larger, the cost etc. that on the other hand causes that structure is complicated.
Utility model content
The purpose of the utility model is to provide a kind of Air Condition Compressor for Electric Vehicle PMSM Drive Systems, with solution
Certainly traditional Air Condition Compressor for Electric Vehicle permanent magnet synchronous motor drive circuit system mostly uses discrete component to be built greatly, and one
The problem of volume that aspect will cause product is larger, the cost that on the other hand causes that structure is complicated.
To achieve the goals above, the utility model embodiment the technical solution adopted is as follows:
The utility model provides a kind of Air Condition Compressor for Electric Vehicle PMSM Drive System, including micro process
Device, in the microprocessor in set A/D converter；
Communication module, for being parsed to the signal that ECU is sent and being transferred to microprocessor；
Power module, for providing power supply for driving circuit；
Current acquisition module, for acquiring the electric current of permanent magnet synchronous motor U, V, W three-phase, and amplify, be converted to it is micro-
The identifiable signal of A/D converter in processor；With
Power driver module is used for the adjustable alternating current of reverse frequency, and the power driver module includes IPM chip；
The power driver module includes that several IGBT being packaged as a whole are managed and for driving the IGBT of IGBT pipe to drive
Dynamic model block, the IGBT drive module include HVIC drive module and LVIC drive module；
The microprocessor is communicated by communication module and ECU, and sends control signal to power driver module, is connect simultaneously
The signal of current acquisition module is received,
Wherein HVIC drive module driving IGBT pipe be electrically connected with PMSM, LVIC drive module driving IGBT manage and
Current acquisition module electrical connection.
The communication module includes Lin signaling control unit and Lin communication isolation module, the Lin signaling control unit
The signal that ECU is sent is parsed and is converted, and the signal of conversion is sent to micro process by Lin communication isolation module
Device.
In order to meet requirement of each chip to voltage, the power module includes high direct voltage conversion module and DC low-voltage
Conversion module, the high direct voltage conversion module include voltage conversion chip U5 ,+350V power supply, diode D3, diode D5,
Diode D6, resistance R7, resistance R11, resistance R12, resistance R18, resistance R23, capacitor C14, capacitor C16, capacitor C17, capacitor
C20, capacitor C21, capacitor C10, capacitor C3, inductance L3 and inductance the L4 ,+350V power supply are connect with diode D6 anode, and two
The cathode of pole pipe D6 is connect with resistance R18, resistance R18 connect with resistance R23 after respectively with one end of capacitor C21 and inductance L4
One end connection, the other end series capacitance C20 of the capacitor C21, the capacitor C20 with PE are connect, the other end of inductance L4
It is connect respectively with the pin D of one end of capacitor C16 and voltage conversion chip U5, the other end series capacitance of the capacitor C16
C17, capacitor C17 with PE are connect, and the pin BP of the voltage conversion chip U5 passes through capacitor C14's and voltage conversion chip U5
Pin S1 connection, the pin FB of the voltage conversion chip U5 are connect with one end of resistance R12 and R11 respectively, the resistance R12
The other end connect with the pin S1 of voltage conversion chip U5, one end and two of the other end of the resistance R11 and capacitor C10
The cathode of pole pipe D3 connects, and the other end of the capacitor C10 is connect with the cathode of diode D5, and the anode of diode D5 is with PE
Connection, the diode D3 anode connect with output voltage terminal, output voltage terminal respectively with the anode of capacitor C3, resistance R7 and
One end of inductance L3 connects, and the cathode of capacitor C3 with PE is connect, and the other end of resistance R7 with PE is connect, and inductance L3's is another
End is connect with the cathode of diode D5, and pin Pin S1, S2, S7 and S8 of the voltage conversion chip U5 are with diode D5's
Cathode connection；
The DC low-voltage conversion module includes voltage conversion chip U3, diode D8, capacitor C27, capacitor C28, capacitor
C30, capacitor C31, capacitor C24, capacitor C26 and resistance R31, the output voltage terminal and diode of the high direct voltage conversion module
D8 anode connection, the cathode of diode D8 respectively with the Vcc pin of voltage conversion chip U3, capacitor C27 and capacitor C28 one
It is connect respectively with capacitor C30, one end of capacitor C31 and PE after the other end of end connection, capacitor C27 and capacitor C28 are in parallel, institute
It states the capacitor C30 other end to connect with the Vz pin of voltage conversion chip U3, the other end and voltage conversion chip of the capacitor C31
The Ct pin of U3 connects, and the Si pin of voltage conversion chip U3 is connect with the Vout pin of voltage conversion chip U3, Vout pin
Connection is connect with 5V power output end, and the Re pin of voltage conversion chip U3 is connect by resistance R31 with 5V power output end, electricity
The GND pin of pressure conversion chip U3 is connect with one end of capacitor C26, the cathode of capacitor C24 and PE respectively, the capacitor C26
The other end connect with 5V power output end, the capacitor C24 anode connect with 5V power output end.
Specifically, the Lin signaling control unit includes Lin transceiving chip U1, resistance R5, resistance R1, resistance R2, resistance
R3, diode D1, capacitor C1, signal amplification chip IC1 and capacitor C5；One end of resistance R5 and the LIN pin of U1 and outside
The connection of Lin input interface, the other end of resistance R5 are connect with the cathode of diode D1；The anode of diode respectively with low pressure+
12V power supply is connected with the Vbat pin of Lin transceiving chip U1；The EN pin of one end connection Lin transceiving chip U1 of resistance R1,
The other end of resistance R1 is connect with the Vcc pin of one end of capacitor C1 and Lin transceiving chip U1 respectively；Another termination of capacitor C1
Ground；One end of resistance R2 and resistance R3 are connect with+5V power supply, the other end of resistance R2 and the TXD pin of Lin transceiving chip U1
Connection, the other end of resistance R3 are connect with the RXD pin of Lin transceiving chip U1；
The RXD pin of the Lin transceiving chip U1 is connect with the 1A pin of signal amplification chip IC1, the signal amplification
The Vcc pin of chip IC 1 is connect with one end of+5V power supply and capacitor C5 respectively, the other end ground connection of capacitor C5；
The Lin communication isolation module includes isolating chip IC3, isolating chip IC4, resistance R13, resistance R14, resistance
The 1Y pin of R15 and resistance R16, the signal amplification chip IC1 are connect by resistance R15 with the pin 1 of isolating chip IC3,
The pin 3 of isolating chip IC3 is grounded, and the pin 6 of isolating chip IC3 connects to power supply, and power supply passes through resistance R14 and isolated core
The connection of pin 5 of piece IC3 is connect with microprocessor；
The pin 5 of the isolating chip IC4 is connect with the TXD pin of Lin transceiving chip U1 ,+5V power supply respectively be isolated
It the pin 6 of chip IC 4 and is connect by resistance R14 with the pin 5 of isolating chip IC4, the pin 3 and Wei Chu of isolating chip IC4
Manage device connection connection.
Specifically, the Lin transceiving chip U1 be internally integrated low voltage DC-DC conversion module and meanwhile also have Lin letter
Number transmitting-receiving function save an IC chip in this way compared with traditional implementation method.
Specifically, the HVIC drive module drives built-in high-voltage level conversion circuit, is used for pulse-width signal
Be transferred directly to DIP-SPM specifies high-end IGBT grid circuit.
In order to enable system design is further simplified, the high-voltage level conversion circuit uses unglazed coupling mouth.
Specifically, the power driver module is internally integrated faulty hardware protection circuit, energy in the case where line under-voltage
Enough interrupt the work of IGBT.
Specifically, diode used in integrated driving HVIC drive module is gone back inside the power driver module.
Specifically, the current acquisition module is three-phase current acquisition module, and the three-phase current acquisition module includes A phase
Current acquisition module, B phase current acquisition module, C phase current acquisition module and operation amplifier chip, the A phase current acquire mould
Block include capacitor C2, capacitor C12, capacitor C6, capacitor C7, resistance R10, resistance R4, resistance R8, resistance R9 and with IPM chip
The resistance R6 of NU pin connection connection, the resistance R6 other end are connect with the pin 3 of operation amplifier chip, the resistance R4, resistance
One end of R8 and capacitor C6 are connect with the pin 3 of operation amplifier chip respectively, and the other end of resistance R4 is connect with 5V power supply, resistance
The other end of R8 with PE is connect, the other end of capacitor C6 respectively with one end of resistance R10, one end of capacitor C12, resistance R9
One end and the pin 2 of operation amplifier chip connect, another termination PE of the resistance R10, the other end of the capacitor C12
It is connect with the output pin 1 of operation amplifier chip, the other end of the resistance R9 and the output pin 1 of operation amplifier chip connect
It connecing, the output pin 1 of the operation amplifier chip is connect with one end of capacitor C7, another termination PE of capacitor C7,5V power supply point
It is not connect with one end of the output pin 4 of operation amplifier chip and capacitor C2, another termination PE of the capacitor C2, operation is put
The output pin 11 of large chip is with meeting PE；
The B phase current acquisition module includes capacitor C22, capacitor C18, capacitor C19, resistance R17, resistance R18, resistance
R22, resistance R24 and the resistance R19 that connection is connect with the NV pin of IPM chip, the other end and operation amplifier of the resistance R19
The pin 5 of chip connects, and one end of the resistance R17, resistance R20 and capacitor C18 connect with the pin 5 of operation amplifier chip respectively
Connect, the other end of resistance R17 is connect with 5V power supply, and the other end of resistance 20 with PE is connect, the other end of capacitor C18 respectively with
The connection of pin 6 of one end of resistance R24, one end of capacitor C22, one end of resistance R22 and operation amplifier chip, the resistance
Another termination PE of R24, the other end of the capacitor C22 is connect with the output pin 7 of operation amplifier chip, the resistance
The other end of R22 is connect with the output pin 7 of operation amplifier chip, the output pin 7 and capacitor C19 of the operation amplifier chip
One end connection, capacitor C19 another termination PE；
The C phase current acquisition module includes capacitor C29, capacitor C32, capacitor C34, resistance R35, resistance R33, resistance
R34, resistance R29 and the resistance R30 that connection is connect with the NW pin of IPM chip, the other end and operation amplifier of the resistance R30
The pin 12 of chip connects, one end of the resistance R29, resistance R33 and capacitor C29 respectively with the pin 12 of operation amplifier chip
Connection, the other end of resistance R29 are connect with 5V power supply, and the other end of resistance 33 with PE is connect, the other end point of capacitor C29
It is not connect with the pin 13 of one end of resistance R35, one end of capacitor C34, one end of resistance R34 and operation amplifier chip, it is described
Another termination PE of resistance R35, the other end of the capacitor C34 is connect with the output pin 14 of operation amplifier chip, described
The other end of resistance R34 is connect with the output pin 14 of operation amplifier chip, the output pin 14 of the operation amplifier chip with
One end of capacitor C32 connects, another termination PE of capacitor C32.
Compared with the existing technology, the utility model embodiment has the advantages that
The utility model embodiment provides a kind of Air Condition Compressor for Electric Vehicle PMSM Drive System, proposes
A kind of relatively simple circuit structure,
The Lin transceiving chip U1 that uses while there is low voltage DC-DC conversion function, turns without addition DC-DC voltage again
Block is changed the mold, the volume for reducing pcb board becomes smaller, and structure is simple；
IGBT is managed and is used to drive the IGBT drive module of IGBT pipe to be encapsulated as power driver module (i.e. IPM), is used
One IPM can be realized to the control of the power drive of Air Condition Compressor for Electric Vehicle permanent magnet synchronous motor, this IPM have signal every
It is not necessarily to additional isolation chip from function, substantially reduces component the space occupied volume, the complexity for designing structure is significantly
It reduces；
High pressure is converted using high direct voltage conversion module, compared with conventionally employed transformer voltage conversion circuit,
Small with quiescent current, electromagnetic noise is small, and Electro Magnetic Compatibility (i.e. EMC) performance is more preferable；
Air Condition Compressor for Electric Vehicle communication interface needs and the communication module of vehicle is attached, and telecommunication circuit uses optocoupler
Isolation can protect control chip not to be burned in input signal exception；
Whole system increases the applicability of controller, reduces the manufacturing cost of controller when realizing identical function, while
Reduce the complexity of product structure and reduces costs.
Detailed description of the invention
The present invention will be further described with reference to the accompanying drawings and examples.
Fig. 1 is the system diagram of Air Condition Compressor for Electric Vehicle PMSM Drive System provided by the utility model；
Fig. 2 is the circuit diagram of Lin signaling control unit；
Fig. 3 is the circuit diagram of Lin communication isolation module；
Fig. 4 is the circuit diagram of high direct voltage conversion module；
The circuit diagram of Fig. 5 DC low-voltage conversion module；
Fig. 6 is the circuit diagram of current acquisition module；
Fig. 7 is the internal circuit diagram of power driver module；
Fig. 8 is the periphery connection circuit diagram of power driver module；
Fig. 9 is the periphery connection circuit diagram of microprocessor；
Specific embodiment
The utility model is described in further detail presently in connection with attached drawing.These attached drawings are simplified schematic diagram,
Only illustrate the basic structure of the utility model in a schematic way, therefore it only shows composition related with the utility model.
Embodiment
Fig. 1 and 9 are please referred to, the utility model embodiment provides a kind of Air Condition Compressor for Electric Vehicle permanent magnet synchronous motor
Drive system, including microprocessor (MCU), communication module, power module, three-phase current acquisition module and power driver module,
A/D converter is set in the microprocessor；The signal that communication module is used to send ECU (automobile master control unit) carries out
It parses and is transferred to microprocessor；Power module is used to provide power supply for driving circuit；Three-phase current acquisition module is for acquiring
The electric current of permanent magnet synchronous motor U, V, W three-phase, and amplify, be converted to the identifiable signal of A/D converter in microprocessor；
Power driver module is used for the adjustable alternating current of reverse frequency；The power driver module includes 6 IGBT being packaged as a whole
Pipe and the IGBT drive module for driving IGBT pipe, the IGBT drive module include 3 HVIC drive modules and 3 LVIC
Drive module；The microprocessor is communicated by communication module and ECU, and sends control signal to power driver module, simultaneously
The signal of three-phase current acquisition module is received, wherein the IGBT pipe of HVIC drive module driving is electrically connected with PMSM, LVIC driving
The IGBT pipe of module drive is electrically connected the electric current for acquiring permanent magnet synchronous motor U, V, W three-phase with three-phase current acquisition module,
Three-phase current acquisition module includes IPM chip.
Wherein power drive unit is IPM module (Intelligent Power Module), i.e. intelligent power module,
PMSM full name is permanent magnet synchronous motor, i.e. permanent magnet synchronous motor, and HVIC is the drive of high pressure grid
Dynamic integrated circuit, LVIC are low voltage gate drive integrated circult, and IGBT is insulated gate bipolar transistor chip, power drive mould
Block.
As preferential, Fig. 2 and Fig. 3 are please referred to, communication module includes Lin signaling control unit and Lin communication isolation module,
The signal that Lin signaling control unit sends ECU is parsed and is converted, and the signal of conversion is passed through Lin communication isolating
Module is sent to microprocessor.
As preferential, the power module includes high direct voltage conversion module and DC low-voltage conversion module.
Please refer to Fig. 2 and Fig. 3, Lin signaling control unit include Lin transceiving chip U1, resistance R5, resistance R1, resistance R2,
Resistance R3, diode D1, capacitor C1, signal amplification chip IC1 and capacitor C5；One end of resistance R5 and the LIN pin of U1 and outer
The connection of portion's Lin input interface, the other end of resistance R5 are connect with the cathode of diode D1；The anode of diode respectively with low pressure+
12V power supply is connected with the Vbat pin of Lin transceiving chip U1；The EN pin of one end connection Lin transceiving chip U1 of resistance R1,
The other end of resistance R1 is connect with the Vcc pin of one end of capacitor C1 and Lin transceiving chip U1 respectively；Another termination of capacitor C1
Ground；One end of resistance R2 and resistance R3 are connect with+5V power supply, and the other end of resistance R2 and the TXD pin of Lin transceiving chip U1 connect
It connects, the other end of resistance R3 is connect with the RXD pin of Lin transceiving chip U1；The RXD pin of Lin transceiving chip U1 is put with signal
The 1A pin of large chip IC1 connects, the Vcc pin of signal amplification chip IC1 one end with+5V power supply and capacitor C5 respectively
Connection, the other end ground connection of capacitor C5；Lin communication isolation module includes isolating chip IC3, isolating chip IC4, resistance R13, electricity
The 1Y pin for hindering R14, resistance R15 and resistance R16, signal amplification chip IC1 passes through the pin 1 of resistance R15 and isolating chip IC3
Connection, the pin 3 of isolating chip IC3 are grounded, and the pin 6 of isolating chip IC3 connects to power supply, power supply by resistance R14 with every
The connection of pin 5 of off-chip piece IC3 is connect with microprocessor；The pin 5 of the isolating chip IC4 and the TXD of Lin transceiving chip U1
Pin connection ,+5V power supply connect with the pin 6 of isolating chip IC4 and by the pin 5 of resistance R14 and isolating chip IC4 respectively
It connects, the pin 3 of isolating chip IC4 connect connection with microprocessor.
Wherein the Lin transceiving chip U1 be internally integrated low voltage DC-DC conversion module and meanwhile also have Lin signal
The function of transmitting-receiving saves an IC chip in this way compared with traditional implementation method.
Referring to Fig. 4, high direct voltage conversion module includes voltage conversion chip U5 ,+350V power supply, diode D3, two poles
Pipe D5, diode D6, resistance R7, resistance R11, resistance R12, resistance R18, resistance R23, capacitor C14, capacitor C16, capacitor C17,
Capacitor C20, capacitor C21, capacitor C10, capacitor C3, inductance L3 and inductance the L4 ,+350V power supply and diode D6 anode connect
Connect, the cathode of diode D6 is connect with resistance R18, resistance R18 connect with resistance R23 after respectively with one end of capacitor C21 and electricity
Feel one end connection of L4, the other end series capacitance C20 of the capacitor C21, the capacitor C20 with PE are connect, inductance L4's
The other end is connect with the pin D of one end of capacitor C16 and voltage conversion chip U5 respectively, the other end series connection of the capacitor C16
Capacitor C17, capacitor C17 with PE are connect, and the pin BP of the voltage conversion chip U5 passes through capacitor C14 and voltage conversion chip
The pin S1 connection of U5, the pin FB of the voltage conversion chip U5 are connect with one end of resistance R12 and R11 respectively, the electricity
The other end of resistance R12 is connect with the pin S1 of voltage conversion chip U5, the other end of the resistance R11 and one end of capacitor C10
It is connected with the cathode of diode D3, the other end of the capacitor C10 is connect with the cathode of diode D5, the anode of diode D5
With PE connect, the diode D3 anode connect with output voltage terminal, output voltage terminal respectively with the anode of capacitor C3, electricity
Resistance R7 is connected with one end of inductance L3, and the cathode of capacitor C3 with PE is connect, and the other end of resistance R7 with PE is connect, inductance L3
The other end connect with the cathode of diode D5, pin Pin S1, S2, S7 and S8 and diode of the voltage conversion chip U5
The cathode of D5 connects, and other systems mostly use greatly the booster circuit with transformer, this system propose it is a kind of using IC chip into
The module of row voltage conversion, advantage is that quiescent current is low, and electromagnetic noise is small, EMC better performances, referring to Fig. 5, DC low-voltage turns
Changing the mold block includes voltage conversion chip U3, diode D8, capacitor C27, capacitor C28, capacitor C30, capacitor C31, capacitor C24, electricity
Hold C26 and resistance R31, the output voltage terminal of the high direct voltage conversion module is connect with the anode of diode D8, diode D8
Cathode connect respectively with one end of the Vcc pin of voltage conversion chip U3, capacitor C27 and capacitor C28, capacitor C27 and capacitor
It is connect respectively with capacitor C30, one end of capacitor C31 and PE after the other end of C28 is in parallel, the capacitor C30 other end and electricity
The Vz pin connection of conversion chip U3 is pressed, the other end of the capacitor C31 is connect with the Ct pin of voltage conversion chip U3, voltage
The Si pin of conversion chip U3 is connect with the Vout pin of voltage conversion chip U3, the connection of Vout pin and 5V power output end
The Re pin of connection, voltage conversion chip U3 is connect by resistance R31 with 5V power output end, the GND of voltage conversion chip U3
Pin is connect with one end of capacitor C26, the cathode of capacitor C24 and PE respectively, the other end and 5V power supply of the capacitor C26
The anode of output end connection, the capacitor C24 is connect with 5V power output end.
Referring to Fig. 6, current sampling module, major function is the electric current for acquiring PMSM motor U, V, W three-phase, and is put
Greatly, the signal that ADC converter can identify in MCU is converted to, wherein amplification factor A=R9/R10, current acquisition module three
Phase current acquisition module, three-phase current acquisition module include that A phase current acquisition module, B phase current acquisition module, C phase current are adopted
Collect module and operation amplifier chip, A phase current acquisition module include capacitor C2, capacitor C12, capacitor C6, capacitor C7, resistance R10,
Resistance R4, resistance R8, resistance R9 and the resistance R6 that connection is connect with the NU pin of IPM chip, the resistance R6 other end are put with operation
The pin 3 of large chip connects, and one end of the resistance R4, resistance R8 and capacitor C6 connect with the pin 3 of operation amplifier chip respectively
Connect, the other end of resistance R4 is connect with 5V power supply, and the other end of resistance R8 with PE is connect, the other end of capacitor C6 respectively with electricity
The pin 2 for hindering one end of R10, one end of capacitor C12, one end of resistance R9 and operation amplifier chip connects, the resistance R10's
Another termination PE, the other end of the capacitor C12 is connect with the output pin 1 of operation amplifier chip, and the resistance R9's is another
One end is connect with the output pin 1 of operation amplifier chip, and the output pin 1 of the operation amplifier chip and one end of capacitor C7 connect
It connects, another termination PE of capacitor C7,5V power supply is connect with one end of the output pin 4 of operation amplifier chip and capacitor C2 respectively,
Another termination PE of the capacitor C2, the output pin 11 of operation amplifier chip is with meeting PE；B phase current acquisition module includes
Capacitor C22, capacitor C18, capacitor C19, resistance R17, resistance R18, resistance R22, resistance R24 and the NV pin company with IPM chip
The resistance R19 connect in succession, the other end of the resistance R19 are connect with the pin 5 of operation amplifier chip, the resistance R17, resistance
One end of R20 and capacitor C18 are connect with the pin 5 of operation amplifier chip respectively, and the other end of resistance R17 is connect with 5V power supply,
The other end of resistance 20 with PE is connect, the other end of capacitor C18 respectively with one end of resistance R24, one end of capacitor C22, electricity
The pin 6 of one end and operation amplifier chip for hindering R22 connects, another termination PE of the resistance R24, the capacitor C22's
The other end is connect with the output pin 7 of operation amplifier chip, the output of the other end and operation amplifier chip of the resistance R22
Pin 7 connects, and the output pin 7 of the operation amplifier chip is connect with one end of capacitor C19, another termination PE of capacitor C19；
C phase current acquisition module include capacitor C29, capacitor C32, capacitor C34, resistance R35, resistance R33, resistance R34, resistance R29 and
The other end of the resistance R30, the resistance R30 of connection and the pin 12 of operation amplifier chip are connect with the NW pin of IPM chip
One end of connection, the resistance R29, resistance R33 and capacitor C29 are connect with the pin 12 of operation amplifier chip respectively, resistance R29
The other end connect with 5V power supply, the other end of resistance 33 with PE is connect, and the other end of capacitor C29 is respectively with resistance R35's
The connection of pin 13 of one end, one end of capacitor C34, one end of resistance R34 and operation amplifier chip, the resistance R35's is another
Terminate PE, the other end of the capacitor C34 connect with the output pin 14 of operation amplifier chip, the resistance R34 it is another
End is connect with the output pin 14 of operation amplifier chip, the output pin 14 of the operation amplifier chip and one end of capacitor C32
Connection, another termination PE of capacitor C32.
Wherein voltage conversion chip U3 is L4949 chip, and voltage conversion chip U5 is S32K144 chip, operation amplifier core
Piece is AD8604 chip, and signal amplification chip IC1 is TC74VHC14f chip, and isolating chip IC3 and isolating chip IC4 are
TLX9304 chip, Lin transceiving chip U1 are TJA1028T chip.
Fig. 7 and 8, the power driver module IPM are please referred to, traditional New energy electric compressor assembly mostly uses greatly discrete
Component is built, and wherein discrete device includes 6 IGBT, and 6 IGBT drive, on the one hand light-coupled isolation etc. causes to control
Plate bulk is big, on the other hand causes complex structural designs, cost increase.And mould is driven comprising 6 IGBT pipes, IGBT inside IPM
Block (HVIC, LVIC), and high-voltage level conversion function built in HVIC, the pulsewidth modulation that will can be referred to altogether in this way
(PWM) what signal was transferred directly to DIP-SPM specifies high-end IGBT grid circuit.The level conversion technology allows unglazed coupling
Mouthful, so that system design is further simplified.In addition to this, internal included faulty hardware protection (UVLO) defencive function is in control electricity
The work of IGBT can be interrupted in the case that source is under-voltage, inside is also integrated with the upper bridge IGBT pump of driving and rises two poles used in circuit
Pipe.
After the power-up, controller carries out self-test first, detection high direct voltage (+110V~+420V) and low pressure (+9V~+
Voltage 16V) whether within normal range (NR), detection IPM whether excess temperature (< 120 DEG C), whether driving voltage insufficient (< 12V),
Stop output motor driving control signal if not within normal range (NR)；Each fault detection finishes and normal situation
Under, judge Lin signal instruction, judges to send instruction whether within normal speed adjustable range, normal speed adjustable range (1000rpm~
6000rpm), controller exports 1000rpm if the instruction that Lin is received is less than 1000rpm, if the finger that Lin is received
It enables and is greater than 6000rpm then controller output 6000rpm, each phase current and IPM in operational process when real-time monitoring motor operation
Temperature value.
When control signal input accesses Lin signal of communication, Lin transceiver by after external signal conversion through optocoupler
Isolating chip is by the communication signal transmissions received to the Lin controller of MCU.MCU parses the signal received, identification
The tach signal of corresponding compressor in Lin signal instruction, MCU can be according to the tach signal identified to IPM output one later
The operating of fixed driving signal control PMSM motor.
It is enlightenment, through the above description, related work people with the above-mentioned desirable embodiment according to the utility model
Member can carry out various changes and amendments in the range of without departing from this item utility model technical idea completely.This item is real
It is not limited to the contents of the specification with novel technical scope, it is necessary to its technology is determined according to scope of the claims
Property range.
Claims (10)
1. a kind of Air Condition Compressor for Electric Vehicle PMSM Drive System, it is characterised in that: including
Microprocessor, in the microprocessor in set A/D converter；
Communication module, for being parsed to the signal that ECU is sent and being transferred to microprocessor；
Power module, for providing power supply for driving circuit；
Current acquisition module for acquiring the electric current of permanent magnet synchronous motor U, V, W three-phase, and amplifies, is converted to micro process
The identifiable signal of A/D converter in device；With
Power driver module is used for the adjustable alternating current of reverse frequency, and the power driver module includes IPM chip；
The power driver module includes several IGBT pipe being packaged as a whole and the IGBT driving mould for driving IGBT pipe
Block, the IGBT drive module include HVIC drive module and LVIC drive module；
The microprocessor is communicated by communication module and ECU, and sends control signal to power driver module, while receiving electricity
The signal of acquisition module is flowed,
Wherein the IGBT pipe of HVIC drive module driving is electrically connected with PMSM, and the IGBT pipe of LVIC drive module driving is adopted with electric current
Collect module electrical connection.
2. Air Condition Compressor for Electric Vehicle PMSM Drive System as described in claim 1, which is characterized in that
The communication module includes Lin signaling control unit and Lin communication isolation module, and the Lin signaling control unit is by ECU
The signal sent is parsed and is converted, and the signal of conversion is sent to microprocessor by Lin communication isolation module.
3. Air Condition Compressor for Electric Vehicle PMSM Drive System as described in claim 1, which is characterized in that
The power module includes high direct voltage conversion module and DC low-voltage conversion module,
The high direct voltage conversion module includes voltage conversion chip U5 ,+350V power supply, diode D3, diode D5, diode
D6, resistance R7, resistance R11, resistance R12, resistance R18, resistance R23, capacitor C14, capacitor C16, capacitor C17, capacitor C20, electricity
Hold C21, capacitor C10, capacitor C3, inductance L3 and inductance the L4 ,+350V power supply to connect with diode D6 anode, diode D6
Cathode connect with resistance R18, resistance R18 connects with one end of capacitor C21 and one end of inductance L4 respectively after connecting with resistance R23
Connect, the other end series capacitance C20 of the capacitor C21, the capacitor C20 with PE are connect, the other end of inductance L4 respectively with
One end of capacitor C16 is connected with the pin D of voltage conversion chip U5, the other end series capacitance C17 of the capacitor C16, capacitor
C17 with PE is connect, and the pin BP of the voltage conversion chip U5 is connected by the pin S1 of capacitor C14 and voltage conversion chip U5
It connects, the pin FB of the voltage conversion chip U5 is connect with one end of resistance R12 and R11 respectively, the other end of the resistance R12
It is connect with the pin S1 of voltage conversion chip U5, the other end of the resistance R11 and one end of capacitor C10 and diode D3's is negative
Pole connection, the other end of the capacitor C10 are connect with the cathode of diode D5, and the anode of diode D5 with PE is connect, described
Diode D3 anode connect with output voltage terminal, output voltage terminal respectively with the anode of capacitor C3, resistance R7 and inductance L3
One end connection, the cathode of capacitor C3 with PE are connect, and the other end of resistance R7 with PE is connect, the other end of inductance L3 and two poles
The cathode of pipe D5 connects, and pin Pin S1, S2, S7 and S8 of the voltage conversion chip U5 is connect with the cathode of diode D5；
The DC low-voltage conversion module include voltage conversion chip U3, diode D8, capacitor C27, capacitor C28, capacitor C30,
Capacitor C31, capacitor C24, capacitor C26 and resistance R31, the output voltage terminal of the high direct voltage conversion module is with diode D8's
Anode connection, the cathode of diode D8 connect with one end of the Vcc pin of voltage conversion chip U3, capacitor C27 and capacitor C28 respectively
It connects, is connect respectively with capacitor C30, one end of capacitor C31 and PE after the other end of capacitor C27 and capacitor C28 are in parallel, the electricity
Hold the C30 other end to connect with the Vz pin of voltage conversion chip U3, the other end of the capacitor C31 is with voltage conversion chip U3's
The connection of Ct pin, the Si pin of voltage conversion chip U3 are connect with the Vout pin of voltage conversion chip U3, the connection of Vout pin
It is connect with 5V power output end, the Re pin of voltage conversion chip U3 is connect by resistance R31 with 5V power output end, and voltage turns
The GND pin for changing chip U3 is connect with one end of capacitor C26, the cathode of capacitor C24 and PE respectively, and the capacitor C26's is another
One end is connect with 5V power output end, and the anode of the capacitor C24 is connect with 5V power output end.
4. Air Condition Compressor for Electric Vehicle PMSM Drive System as claimed in claim 2, it is characterised in that:
The Lin signaling control unit includes Lin transceiving chip U1, resistance R5, resistance R1, resistance R2, resistance R3, diode
D1, capacitor C1, signal amplification chip IC1 and capacitor C5；One end of resistance R5 and the LIN pin of U1 and outside Lin input interface
Connection, the other end of resistance R5 are connect with the cathode of diode D1；The anode of diode is received with low pressure+12V power supply and Lin respectively
Send out the Vbat pin connection of chip U1；The EN pin of one end connection Lin transceiving chip U1 of resistance R1, the other end point of resistance R1
It is not connect with the Vcc pin of one end of capacitor C1 and Lin transceiving chip U1；Capacitor C1 other end ground connection；Resistance R2 and resistance R3
One end connect with+5V power supply, the other end of resistance R2 is connect with the TXD pin of Lin transceiving chip U1, the other end of resistance R3
It is connect with the RXD pin of Lin transceiving chip U1；
The RXD pin of the Lin transceiving chip U1 is connect with the 1A pin of signal amplification chip IC1, the signal amplification chip
The Vcc pin of IC1 is connect with one end of+5V power supply and capacitor C5 respectively, the other end ground connection of capacitor C5；
The Lin communication isolation module include isolating chip IC3, isolating chip IC4, resistance R13, resistance R14, resistance R15 and
The 1Y pin of resistance R16, the signal amplification chip IC1 are connect by resistance R15 with the pin 1 of isolating chip IC3, isolated core
The pin 3 of piece IC3 is grounded, and the pin 6 of isolating chip IC3 connects to power supply, and power supply passes through resistance R14's and isolating chip IC3
The connection of pin 5 is connect with microprocessor；
The pin 5 of the isolating chip IC4 is connect with the TXD pin of Lin transceiving chip U1 ,+5V power supply respectively with isolating chip
It the pin 6 of IC4 and is connect by resistance R14 with the pin 5 of isolating chip IC4, the pin 3 and microprocessor of isolating chip IC4
Connection connection.
5. Air Condition Compressor for Electric Vehicle PMSM Drive System as claimed in claim 4, which is characterized in that
The Lin transceiving chip U1's has been internally integrated low voltage DC-DC conversion module while also with the function of Lin signal transmitting and receiving
Energy.
6. Air Condition Compressor for Electric Vehicle PMSM Drive System as described in claim 1, which is characterized in that
The HVIC drive module drives built-in high-voltage level conversion circuit, for pulse-width signal to be transferred directly to
DIP-SPM's specifies high-end IGBT grid circuit.
7. Air Condition Compressor for Electric Vehicle PMSM Drive System as claimed in claim 6, which is characterized in that
The high-voltage level conversion circuit uses unglazed coupling mouth.
8. Air Condition Compressor for Electric Vehicle PMSM Drive System as claimed in claim 6, which is characterized in that
The power driver module is internally integrated faulty hardware protection circuit.
9. Air Condition Compressor for Electric Vehicle PMSM Drive System as claimed in claim 6, which is characterized in that
Diode used in integrated driving HVIC drive module is gone back inside the power driver module.
10. Air Condition Compressor for Electric Vehicle PMSM Drive System as described in claim 1, which is characterized in that
The current acquisition module is three-phase current acquisition module, and the three-phase current acquisition module includes A phase current acquisition mould
Block, B phase current acquisition module, C phase current acquisition module and operation amplifier chip,
The A phase current acquisition module includes capacitor C2, capacitor C12, capacitor C6, capacitor C7, resistance R10, resistance R4, resistance
R8, resistance R9 and the resistance R6 that connection is connect with the NU pin of IPM chip, the pin of the resistance R6 other end and operation amplifier chip
One end of 3 connections, the resistance R4, resistance R8 and capacitor C6 are connect with the pin 3 of operation amplifier chip respectively, and resistance R4's is another
One end is connect with 5V power supply, and the other end of resistance R8 with PE is connect, the other end of capacitor C6 respectively with one end of resistance R10,
The pin 2 of one end of capacitor C12, one end of resistance R9 and operation amplifier chip connects, another termination PE of the resistance R10
Ground, the other end of the capacitor C12 are connect with the output pin 1 of operation amplifier chip, the other end of the resistance R9 and operation
The output pin 1 of amplification chip connects, and the output pin 1 of the operation amplifier chip is connect with one end of capacitor C7, capacitor C7
Another termination PE, 5V power supply is connect with one end of the output pin 4 of operation amplifier chip and capacitor C2 respectively, the capacitor C2
Another termination PE, the output pin 11 of operation amplifier chip is with meeting PE；
The B phase current acquisition module includes capacitor C22, capacitor C18, capacitor C19, resistance R17, resistance R18, resistance R22, electricity
Resistance R24 and the other end and operation amplifier chip that the resistance R19, the resistance R19 that connect are connect with the NV pin of IPM chip
Pin 5 connects, and one end of the resistance R17, resistance R20 and capacitor C18 are connect with the pin 5 of operation amplifier chip respectively, electricity
Resistance R17 the other end connect with 5V power supply, the other end of resistance 20 with PE is connect, the other end of capacitor C18 respectively with resistance
The connection of pin 6 of one end of R24, one end of capacitor C22, one end of resistance R22 and operation amplifier chip, the resistance R24's
Another termination PE, the other end of the capacitor C22 is connect with the output pin 7 of operation amplifier chip, and the resistance R22's is another
One end is connect with the output pin 7 of operation amplifier chip, the output pin 7 of the operation amplifier chip and one end of capacitor C19
Connection, another termination PE of capacitor C19；
The C phase current acquisition module includes capacitor C29, capacitor C32, capacitor C34, resistance R35, resistance R33, resistance R34, electricity
Resistance R29 and the other end and operation amplifier chip that the resistance R30, the resistance R30 that connect are connect with the NW pin of IPM chip
Pin 12 connects, and one end of the resistance R29, resistance R33 and capacitor C29 are connect with the pin 12 of operation amplifier chip respectively,
The other end of resistance R29 is connect with 5V power supply, and the other end of resistance 33 with PE is connect, the other end of capacitor C29 respectively with electricity
The pin 13 for hindering one end of R35, one end of capacitor C34, one end of resistance R34 and operation amplifier chip connects, the resistance
Another termination PE of R35, the other end of the capacitor C34 is connect with the output pin 14 of operation amplifier chip, the resistance
The other end of R34 is connect with the output pin 14 of operation amplifier chip, the output pin 14 and capacitor of the operation amplifier chip
One end of C32 connects, another termination PE of capacitor C32.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821385840.4U CN208656677U (en) | 2018-08-27 | 2018-08-27 | Air Condition Compressor for Electric Vehicle PMSM Drive System |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821385840.4U CN208656677U (en) | 2018-08-27 | 2018-08-27 | Air Condition Compressor for Electric Vehicle PMSM Drive System |
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| CN208656677U true CN208656677U (en) | 2019-03-26 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108809200A (en) * | 2018-08-27 | 2018-11-13 | 龙城电装（常州）有限公司 | Air Condition Compressor for Electric Vehicle PMSM Drive System |
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2018
- 2018-08-27 CN CN201821385840.4U patent/CN208656677U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108809200A (en) * | 2018-08-27 | 2018-11-13 | 龙城电装（常州）有限公司 | Air Condition Compressor for Electric Vehicle PMSM Drive System |
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