CN107492875B

CN107492875B - Intelligent power module and controller of air conditioner

Info

Publication number: CN107492875B
Application number: CN201710815564.4A
Authority: CN
Inventors: 冯宇翔
Original assignee: Guangdong Midea Refrigeration Equipment Co Ltd
Current assignee: GD Midea Air Conditioning Equipment Co Ltd
Priority date: 2017-09-11
Filing date: 2017-09-11
Publication date: 2018-11-20
Anticipated expiration: 2037-09-11
Also published as: CN107492875A

Abstract

The present invention provides a kind of intelligent power module and controller of air conditioner, by increasing an adjustment circuit between internal each driving circuit and corresponding IGBT pipe, the variation of the adjustment circuit energy real-time detection intelligent power module low-pressure area voltage value, and cause voltage value is too low so that module is stopped output so that when the energy storage of driving motor causes the IGBT pipe of inside modules to put aside charge in the fluctuation of its low-voltage power supply, the charge that can be put aside to inside modules IGBT pipe is released, and make when supply voltage restores to work normally, a suitable time is selected to continue completely to release above-mentioned charge by output low-resistance and high resistant alternating state by timing, the reliability of its work is influenced on the impact of inside modules circuit to avoid its charge.

Description

Intelligent power module and controller of air conditioner

Technical field

The present invention relates to intelligent power module technical field more particularly to a kind of intelligent power module and air conditioner to control Device.

Background technique

Intelligent power module, i.e. IPM (Intelligent Power Module) are a kind of by power electronics and integrated electricity The power drive class product that road technique combines.Device for power switching and high-voltage driving circuit are integrated in one by intelligent power module It rises, and is internally provided with the fault detection circuits such as overvoltage, overcurrent and overheat.On the one hand intelligent power module receives MCU's Signal is controlled, on the other hand driving subsequent conditioning circuit work sends the state detection signal of system back to MCU.Intelligent power module is outstanding Its frequency converter for being suitable for driving motor and various inverters, are frequency controls, metallurgical machinery, electric propulsion, servo-drive, A kind of desired power level electronic device of frequency-conversion domestic electric appliances.

The circuit structure of existing IPM module 100 is as shown in Figure 1, include that HVIC manages (High Voltage Integrated Circuit, high voltage integrated circuit chip) 111, bridge arm IGBT manages (Insulated Gate on three-phase Bipolar Transistor, insulated gate bipolar transistor) 111,112,113 and three-phase lower bridge arm IGBT pipe 114, 115,116, it wherein include that UH driving circuit 101, the VH connected respectively at bridge arm IGBT pipe on three-phase drives inside HVIC pipe 111 Circuit 102, WH driving circuit 103, and UL driving circuit 104, VL driving circuit respectively at the IGBT connection of three-phase lower bridge arm 105 and WL driving circuit 106, this six driving circuits drive respectively under the control of six tunnels that IPM module 100 inputs control signal It moves corresponding six IGBT pipes and carries out switch state switching.Its IPM module 100 recommendation circuit in actual work as shown in Fig. 2, Six tunnels by input of its IPM module 100 control signal and connect with MCU200, U, V, W three-phase output end of IPM module 100 The three-phase windings of motor 139 are connected, capacitor 135,136,137 is respectively to connect three-phase output end and corresponding phase high voltage power supply just The bootstrap capacitor at end controls the switch state that signal controls six IGBT pipes of IPM module 100 by six tunnels of MCU200 output It switches over, exports corresponding three-phase driving signal to motor 139, thus the operation of driving motor 139.In practical application, IPM The working environment of module 100 is more severe, power supply there are it is unstable situations such as, cause IPM module 100 low-voltage power supply electricity The reasons such as pressure fluctuation cause power down suddenly, then IPM module 100 can stop output suddenly, and since the motor 139 has inductance Energy storage can generate induced electromotive force, and induced electromotive force can be transmitted to IPM module 100, make to put aside charge on its internal IGBT pipe, Cannot release in time in a short time, and if if IPM module 100 is restored to work normally when power up is stablized, in Still residual charge on portion's IGBT pipe may generate electric discharge to IPM module 100 in next normal switch cycles, influence IPM module Effective driving to load motor, and be possible to constitute IPM inside modules circuit unnecessary charge impact, it is long-term to influence it Reliability hinders intelligent power module being widely applied in frequency conversion field.

Summary of the invention

The main purpose of the present invention is to provide a kind of intelligent power module and controller of air conditioner, it is therefore intended that solves intelligence Energy power module is during the work time since the unstable of power supply causes IGBT pipe savings charge inside intelligent power module The effective driving for influencing it to motor cannot be released in short-term, and its module functional reliability is influenced on module generation impact and is asked Topic.

To achieve the above object, a kind of intelligent power module provided by the invention, including bridge arm IGBT pipe and three on three-phase Phase lower bridge arm IGBT pipe, and it is corresponding with each IGBT pipe in bridge arm IGBT pipe on the three-phase and three-phase lower bridge arm IGBT pipe Driving circuit and adjustment circuit；

Each driving circuit output end connects the signal input part of each corresponding adjustment circuit, each The signal output end of a adjustment circuit connects the grid of corresponding each IGBT；

Each IGBT manages the anode and cathode of the power end of corresponding adjustment circuit in bridge arm IGBT pipe on the three-phase It is separately connected the higher-pressure region power supply anode and cathode of corresponding phase；Each IGBT pipe pair in the three-phase lower bridge arm IGBT pipe The anode and cathode of the power end for the adjustment circuit answered are separately connected the anode of the intelligent power module low-pressure area power supply And cathode；Wherein,

The adjustment circuit is used to detect the voltage value of its power end, when the voltage value is less than predetermined voltage threshold, The adjustment circuit cuts off the driving circuit and exports to the driving signal of corresponding IGBT pipe and start timing, when timing time not Reach the goal-selling time, and when the voltage value is more than or equal to the predetermined voltage threshold, the adjustment circuit output Low-resistance and high resistant replace continuous state so that the charge for corresponding to IGBT pipe to be released；When timing time reaches the default mesh When marking the time, controls the driving circuit output drive signal and manage to corresponding IGBT.

In a kind of possible design, each adjustment circuit includes voltage detection module, counting module, signal generation Device, output module and first switch；

The input terminal of the voltage detection module, the power end of the counting module, the signal generator power end And the power end interconnection of the output module, constitute the power end of the adjustment circuit；The output end of the voltage detection module It is connect respectively with the control terminal of the input terminal of the counting module and the first switch；The output end of the counting module connects First control terminal of the output module；The output end of the signal generator connects the second control terminal of the output module； The input terminal of the output module is the signal input part of the adjustment circuit, the output end connection described the of the output module The input terminal of one switch, the output end of the first switch are the signal output end of the adjustment circuit；Wherein,

The voltage detection module, for being less than predeterminated voltage threshold in the voltage value for detecting the adjustment circuit input terminal It when value, controls the counting module and starts timing, and control connection of the first switch by working normally when and switch to disconnect；

The counting module is used to start timing, and the first trigger signal of output is simultaneously exported with the signal generator Pulse signal controls output module output low-resistance and high resistant alternating continuous state simultaneously；

When timing time is not up to the goal-selling time, and the voltage value is more than or equal to the predetermined voltage threshold When, the low-resistance and high resistant alternating continuous state of the output module output release the charge of corresponding IGBT pipe；Work as timing When time reaches the goal-selling time, the counting module exports the second trigger signal and controls the driving circuit output drive Dynamic signal is managed to corresponding IGBT.

In a kind of possible design, the counting module includes the first NOT gate and counter；

The input terminal of first NOT gate be the counting module input terminal, first NOT gate output end connection described in Counter input, the counter output are the counting module output end.

In a kind of possible design, the voltage detection module includes comparator, voltage source；

The in-phase end of the comparator is connect with the adjustment circuit power end anode, the anode connection institute of the voltage source The reverse side of comparator is stated, the cathode of the voltage source is connect with the adjustment circuit power end cathode.

In a kind of possible design, the output module includes second switch, third switch, the first PMOS tube and second NMOS tube；

The input terminal of the second switch and the source electrode of first PMOS tube are rectified with the adjustment circuit power supply respectively Pole connection, the output end of the second switch connect the control terminal of the third switch, and the control terminal of the second switch is institute State the first control terminal of output module；

The first choice end of the third switch is the second control terminal of the output module；

Second selection end of the third switch connects the grid of first PMOS tube, the fixing end of the third switch The grid of second NMOS tube is connected, the drain electrode of first PMOS tube and the drain electrode connecting pin of second NMOS tube are institute Output module output end is stated, the second NMOS tube source electrode is connect with the adjustment circuit power end cathode.

In a kind of possible design, the output module further includes shaping unit；

The output end of the second switch connects the input terminal of the shaping unit, and the output end of the shaping unit is institute State the control terminal of third switch, the shaping unit be second switch output control signal shaping after output to described the The control terminal of three switches.

In a kind of possible design, the shaping unit includes the first NOT gate and the second NOT gate；

The input terminal of first NOT gate is the input terminal of the shaping unit, and the output end of first NOT gate connects institute The input terminal of the second NOT gate is stated, the output end of second NOT gate is the output end of the shaping unit.

In a kind of possible design, each described adjustment circuit further includes shaping amplification module：

The shaping amplification module input terminal connects the input terminal of the adjustment circuit, the shaping amplification module output end Connect the input terminal of the output module, the shaping amplification module be the input end signal of the adjustment circuit amplify and It is exported after shaping to the input terminal of the output module.

In a kind of possible design, the shaping amplification module includes third NOT gate and the 4th NOT gate；

The input terminal of the third NOT gate is the input terminal of the shaping amplification module, and the output end of the third NOT gate connects The input terminal of the 4th NOT gate is connect, the output end of the 4th NOT gate is the output end of shaping amplification module.

To achieve the above object, the present invention also provides a kind of controller of air conditioner, the air conditioner includes the intelligence Power module.

Intelligent power module provided by the invention, by increasing between internal each driving circuit and corresponding IGBT pipe Add an adjustment circuit, the variation of the adjustment circuit energy real-time detection IPM module low-pressure area voltage value, and supplied in its low pressure Electric power-supply fluctuation causes voltage value is too low module is made to stop output so that the energy storage of driving motor causes inside modules When IGBT pipe puts aside charge, it can be initially switched off the driving signal of driving output and IGBT pipe, so that IGBT pipe savings charge first carries out Naturally it releases, the adjustment circuit starts timing at this time, then when low-voltage power supply restores normal, if voltage value is reduced to It is more than that the driving signal of object time then direct controlling and driving circuit output is managed to corresponding IGBT that time of recovery is long, if electric The time that pressure value is reduced to recovery is less than the object time, then exports in timing to the remaining time of object time when taking voltage to restore Low-resistance and high resistant alternating state further quickly release to IGBT pipe savings charge, to guarantee safety when being released, Accumulated heat excessively causes the metal-oxide-semiconductor inside adjustment circuit to damage when will not be because releasing.Therefore it both ensure that and put aside in IGBT pipe in this way Charge can be quickly obtained it is safer release, and can be shortened the time that IPM module is restored in low-voltage power supply voltage fluctuation, make Module can more quickly be restored to work normally, and avoid electric power storage lotus simultaneously and influence its reliable operation to the impact of module Property.

Detailed description of the invention

Fig. 1 is the circuit structure diagram of intelligent power module in the prior art；

Fig. 2 is the circuit diagram of intelligent power module real work in the prior art；

Fig. 3 is the circuit structure diagram of intelligent power module of the present invention；

Fig. 4 is the particular circuit configurations figure of output regulation circuit in Fig. 3.

Specific embodiment

The embodiment of the present invention is described below in detail, examples of the embodiments are shown in the accompanying drawings, wherein from beginning to end Same or similar label indicates same or similar element or element with the same or similar functions.Below with reference to attached The embodiment of figure description is exemplary, it is intended to is used to explain the present invention, and is not considered as limiting the invention.

Referring to Fig. 3, Fig. 3 is 4100 structural schematic diagram of IPM module that first embodiment of the invention provides, for the ease of saying Bright, only parts related to embodiments of the present invention are shown.

In the present embodiment, which includes bridge arm IGBT pipe and three-phase lower bridge arm IGBT pipe on three-phase, and Driving circuit corresponding with each IGBT pipe in bridge arm IGBT pipe on three-phase and three-phase lower bridge arm IGBT pipe and adjustment circuit；

Each driving circuit output end connects the signal input part of each corresponding adjustment circuit, each adjustment electricity The signal output end on road connects the grid of each corresponding IGBT；

Each IGBT manages the anode and cathode difference of the power end of corresponding adjustment circuit in bridge arm IGBT pipe on three-phase Connect the higher-pressure region power supply anode and cathode of corresponding phase；Each IGBT manages corresponding adjustment in three-phase lower bridge arm IGBT pipe The anode and cathode of the power end of circuit are separately connected the anode and cathode of 4100 low-pressure area power supply of intelligent power module；Its In,

Adjustment circuit is used to detect the voltage value of its power end, when voltage value is less than preset threshold, adjustment circuit cutting Driving circuit exports to the driving signal of corresponding IGBT pipe and starts timing, when timing time is not up to the goal-selling time, and When voltage value is more than or equal to preset threshold, adjustment circuit exports low-resistance and high resistant replaces continuous state will correspond to IGBT The charge of pipe is released；When timing time reaches the goal-selling time, control driving circuit output drive signal to correspondence IGBT pipe.

In the present embodiment, bridge arm IGBT pipe is respectively bridge arm IGBT pipe 4121 in U phase, bridge arm IGBT pipe in V phase on three-phase Bridge arm IGBT pipe 4123 in 4122 and W phase, three-phase lower bridge arm IGBT pipe are respectively U phase lower bridge arm IGBT pipe 4124, V phase lower bridge arm IGBT pipe 4125 and W phase lower bridge arm IGBT pipe 4126, this six IGBT pipes respectively constitute on IPM module three-phase under bridge arm and three-phase The corresponding power circuit of bridge arm provides corresponding three-phase current and voltage for IPM module drive load motor, further, often The power circuit that a bridge arm corresponds to phase can also include FRD pipe (the Fast Recovery being connected in parallel on each IGBT pipe Diode, fast recovery diode), backward voltage afterflow is provided for corresponding IGBT pipe, is played a protective role.

Drive corresponding with each IGBT pipe in bridge arm IGBT pipe on three-phase and three-phase lower bridge arm IGBT pipe in the present embodiment Dynamic circuit and adjustment circuit are respectively:

The UH output regulation circuit 14A connecting with bridge arm IGBT pipe 4121 in U phase, connect with UH output regulation circuit 14A UH driving circuit 14；

The VH output regulation circuit 24A connecting with bridge arm IGBT pipe 4122 in V phase, connect with VH output regulation circuit 24A VH driving circuit 24；

The WH output regulation circuit 34A connecting with bridge arm IGBT pipe 4123 in W phase, connect with WH output regulation circuit 34A WH driving circuit 34；

The UL output regulation circuit 44A connecting with U phase lower bridge arm IGBT pipe 4124, connect with UL output regulation circuit 44A UL driving circuit 44；

The WL output regulation circuit 54A connecting with W phase lower bridge arm IGBT pipe 4125, connect with WL output regulation circuit 54A WL driving circuit 54；

The VL output regulation circuit 64A connecting with V phase lower bridge arm IGBT pipe 4126, connect with VL output regulation circuit 64A VL driving circuit 64；

In the present embodiment, six above-mentioned driving circuits and adjustment circuit are integrated in HVIC pipe 4400, in practical application In, this six driving circuits and adjustment circuit can also be individually present or corresponding three driving circuits of upper bridge arm and adjustment For circuit integration in HVIC pipe, corresponding three driving circuits of lower bridge arm and adjustment circuit are integrated in LVIC pipe (Low Voltage Integrated Circuit, low-voltage ic chip) in, specific set-up mode can be according to the internal structure of IPM module Mode is different and different.

In the present embodiment, the end power positive end VCC of HVIC pipe 4400 powers as the low-pressure area of intelligent power module 4100 Power positive end VDD, VDD are generally 15V, low-pressure area of the power supply negative terminal GND of HVIC pipe 4400 as intelligent power module 4100 Power supply negative terminal COM, and the higher-pressure region power supply for corresponding to phase is since the access with DC bus-bar voltage forms high pressure, such as DC bus-bar voltage is terminated through P into generally 300V or so；

The first input end HIN1 of HVIC pipe 4400 is as bridge arm input terminal in the U phase of the intelligent power module 4100 UHIN is connect with 14 input terminal of UH driving circuit；

Second input terminal HIN2 of HVIC pipe 4400 as bridge arm input terminal VHIN in the V phase of intelligent power module 4100, It is connect with 24 input terminal of VH driving circuit；

The third input terminal HIN3 of HVIC pipe 4400 as bridge arm input terminal WHIN in the W phase of intelligent power module 4100, It is connect with 34 input terminal of WH driving circuit；

U phase lower bridge arm input terminal ULIN of the 4th input terminal LIN1 of HVIC pipe 4400 as intelligent power module 4100, It is connect with 44 input terminal of UL driving circuit；

V phase lower bridge arm input terminal VLIN of the 5th input terminal LIN2 of HVIC pipe 4400 as intelligent power module 4100, It is connect with 54 input terminal of VL driving circuit；

W phase lower bridge arm input terminal WLIN of the 6th input terminal LIN3 of HVIC pipe 4400 as intelligent power module 4100, It is connect with 64 input terminal of WL driving circuit；

UL driving circuit 44, WL driving circuit 54, the power supply of VL driving circuit 64 are low for intelligent power module 4100 Pressure area power supply, the power input of UL output regulation circuit 44A, WL output regulation circuit 54A, VL output regulation circuit 64A It is same；

UH driving circuit 14, VH driving circuit 24, WH driving circuit 34 have two groups of power supply inputs, and one group is intelligent function 4100 low-pressure area power supply of rate module, another set is the higher-pressure region power supply of corresponding phase, and UH output regulation circuit The higher-pressure region of the power input of 14A, VH output regulation circuit 24A, WH output regulation circuit 34A and the driving circuit being correspondingly connected with Power supply is identical, i.e., UH driving circuit 14, UH output regulation circuit 14A power input be U phase high-voltage suppling power UVB and UVS；VH driving circuit 24, VH output regulation circuit 24A power input be V phase high-voltage suppling power VVB and VVS；WH driving Circuit 34, WH output regulation circuit 34A power input be V phase high-voltage suppling power WVB and WVS.

In the present embodiment, the DC bus-bar voltage input terminal P of IPM module 4100 is separately connected the collection of above-mentioned six IGBT pipes Electrode, UN, VN, WN are respectively the emitter output end of wherein three lower bridge arm IGBT pipes, and IPM module 4100 further includes three Bootstrap capacitor 4133,4132,4131 is connected in parallel on the higher-pressure region power supply end of corresponding phase respectively.

In 4100 course of normal operation of IPM module, six tunnel input signal of UHIN, VHIN, WHIN, ULIN, VLIN, WLIN In identical phase upper bridge arm and lower bridge arm input signal can only have one for high level, another is necessary for low level, i.e., There can only be a high level in UHIN, ULIN, there can only be a high level in VHIN, VLIN, WHIN, WLIN there can only be a height Level.

By taking bridge arm in U phase and lower bridge arm input signal UHIN, ULIN as an example, when UHIN input low level, ULIN is necessary Input high level, UHIN is input to bridge arm IGBT pipe 4121 in U phase through UH driving circuit 14 and UH output regulation circuit 14A at this time Grid is kept it turned off, and ULIN is input to 4124 grid of U phase lower bridge arm IGBT pipe through UL driving circuit 44 and UL output regulation circuit 44A Pole turns it on, at this point, the low-pressure area power supply VDD of IPM module 4100 gives certainly through 14 internal bootstrap circuit of UH driving circuit It lifts capacitor 4133 to charge, charge circuit is VDD through arriving UVB bridge under through bootstrap capacitor 4133, U phase inside UH driving circuit 14 Arm IGBT pipe 4124 reaches low-pressure area power supply negative terminal COM, supplies by enough long-time later period capacitor both ends close to voltage zone Piezoelectric voltage, that is, 15V, i.e., U phase high-voltage suppling power UVB at this time and UVS voltage are close to 15V；And when UHIN input high level, ULIN must input low level when, bridge arm IGBT pipe 4121 is connected in U phase, and U phase lower bridge arm IGBT pipe 4124 ends, at this time direct current Busbar voltage reaches UVS close to 300V, since 4133 both ends of bootstrap capacitor have had through bridge arm IGBT pipe 4121 on the end P and U phase Close to the voltage of 15V, therefore its end UVB is lifted to close to 315V.Thus U phase high-voltage suppling power UVB and UVS voltage be with In U phase the difference of bridge arm and lower bridge arm input signal UHIN, ULIN and change, if the high level that bridge arm inputs in U phase When the electricity that signal is relatively short and bootstrap capacitor 4133 stores is relatively more, voltage of the UVB with respect to UVS can keep 14V or more, i.e. UH 14 higher-pressure region input power of output regulation circuit 14A and UH driving circuit can keep 14V or more.

Similarly the higher-pressure region input power of other phases can also keep 14V or more.

In the present embodiment, each adjustment circuit includes voltage detection module, counting module, output module and first opens It closes, by taking UH output regulation circuit 14A as an example, as shown in figure 4, UH output regulation circuit 14A includes voltage detection module 10, counts Module 20, signal generator 5013, output module 30 and first switch 5001.

Second selection end of the input terminal IN connection second switch 5007 of adjustment circuit；

The input terminal of voltage detection module 10, the power end of counting module 20, the input terminal of first switch 5001, signal hair The power end interconnection of the power end and output module 30 of raw device 5013, constitutes the power end of adjustment circuit 14A；Voltage detection module 10 output end is connect with the control terminal of the input terminal of counting module 20 and first switch 5001 respectively；The output of counting module 20 First control terminal of end connection output module 30；Second control of the output end connection output module 30 of signal generator 5013 End；The input terminal of output module 30 is the signal input part of adjustment circuit 14A, and the output end of output module 30 connects first switch 5001 input terminal, the output end of first switch 5001 are the signal output end of adjustment circuit 14A；Wherein,

Voltage detection module 10, for controlling when the voltage value for detecting adjustment circuit 14A input terminal is less than preset threshold Counting module 20 processed starts timing, and connection when controlling first switch by working normally switchs to disconnect；

Counting module 20, for when starting timing, the first trigger signal of output and and signal generator 5013 output Pulse signal controls output module 30 simultaneously and exports low-resistance and high resistant alternating continuous state；

When timing time is not up to the goal-selling time, and voltage value is more than or equal to preset threshold, output module The low-resistance and high resistant alternating continuous state of the output of 30 outputs release the charge of corresponding IGBT pipe；When timing time reaches When the goal-selling time, counting module 20 exports the second trigger signal and controls driving circuit output drive signal to corresponding IGBT Pipe.

Specifically, voltage detection module 10 includes comparator 5009, voltage source 5008；

The in-phase end of comparator 5009 is connect with adjustment circuit power end anode, the anode connection comparator of voltage source 5008 The cathode of 5009 reverse side, voltage source 5008 is connect with adjustment circuit power end cathode.

Counting module 10 includes the first NOT gate 5012 and counter 5002；

The input terminal of first NOT gate 5012 is 10 input terminal of counting module, the output end linkage counter of the first NOT gate 5012 5002 input terminals, 5002 output end of counter are 10 output end of counting module.

Output module 30 includes second switch 5011, third switch 5007, the first PMOS tube 5003 and the second NMOS tube 5004；

The input terminal of second switch 5011 and the source electrode of the first PMOS tube 5003 respectively with adjustment circuit 14A power end VB1 The control terminal of anode connection, the control terminal second switch 5011 of the output end connection third switch 5007 of second switch 5011 is defeated First control terminal of module 30 out；

The first choice end of third switch 5007 is the second control terminal of output module 30；；

Second selection end of third switch 5007 connects the grid of the first PMOS tube 5003, the fixing end of third switch 5007 The grid of the second NMOS tube 5004 is connected, the drain electrode of the first PMOS tube 5003 and the drain electrode connecting pin of the second NMOS tube 5004 are defeated 30 output end of module out, 5004 source electrode of the second NMOS tube are connect with adjustment circuit 14A power end cathode VS1.

It is worth noting that above-mentioned first switch 5001, second switch 5011 and third switch 5007 can be opened for simulation electronic It closes.

The adjustment circuit working principle of the present embodiment is as follows：In 4100 course of normal operation of IPM module, six tunnels input letter Number can adjusted circuit is input to the IGBT tube grid of corresponding bridge arm again after corresponding driving circuit carries out drive amplification, with It controls it and carries out switch state switching, the corresponding three-phase driving signal of final output is with the normal operation of driving motor, due to IPM Working environment locating for module 4100 is more severe, and there are unstable situations for power supply, therefore can cause the low pressure of IPM module 4100 Power supply, that is, VDD fluctuation, so that VDD is lower than the under-voltage protection value of IPM module 4100, so that drive module cisco unity malfunction The driving signal of output is turned off, so that IPM module 4100 stops output suddenly, since driving motor is inductive load, is driven Winding meeting energy storage generates induced electromotive force inside dynamic motor, and induced electromotive force can be transmitted to IPM module 4100, so that PM Charge is put aside on the IGBT pipe of module 4100, the output regulation circuit connecting at this time with IGBT pipe, which starts to play, powers on IGBT pipe The effect that lotus is released, it is specific as follows：

When voltage detection module 10 detects that the voltage value of adjustment circuit input terminal is less than predetermined voltage threshold, specifically When being that the in-phase end voltage of comparator 5009 is lower than 5008 voltage value of voltage source of reverse side access, voltage detection module 10 passes through 5009 output end of comparator output control signal, that is, low level signal is controlled to 5001 control terminal of first switch and counting module 20 Connection when first switch 5001 is by working normally switchs to disconnect.

When first switch 5001 disconnects, the connection of 30 output end of output module and adjustment circuit output end OUT are disconnected, this When adjustment circuit cut off the driving circuit and export to the driving signal of corresponding IGBT pipe, i.e. disconnection adjustment circuit output end OUT, Charge is put aside on IGBT pipe at this time carries out nature electric discharge.

When 20 input terminal of counting module becomes low level, 5012 reverse phase of the first NOT gate through counting module 20 becomes high electricity Flat, the level of this 5002 input terminal of hour counter becomes high level from low level, so that counter 5002 starts counting, makes simultaneously The output of counter 5002 becomes low level first trigger signal, so that second switch 5011 disconnects, further such that third is opened It closes 5007 control terminal also connect from the second selection end and become to connect with first choice end, the output of signal generator 5013 at this time Pulse signal load output module 30 the second NMOS tube 5004 grid so that the second NMOS tube 5004 be in switch shape State, i.e. control output module are in low-resistance and high resistant alternating continuous state.

Voltage detection module 10 detects that the voltage value of adjustment circuit input terminal rises, and presets so that voltage value is more than or equal to When voltage threshold, specifically the in-phase end voltage of comparator 5009 is greater than or equal to 5008 electricity of voltage source of reverse side access When pressure value, voltage detection module 10 passes through 5009 output end of comparator output control signal, that is, high level signal to first switch 5001 control terminals and counting module 20, control first switch 5001 are switched to connect by disconnection.

When first switch 5001 is connected, two states are divided into according to the timing of counting module 20 at this time：

If goal-selling time such as 1024us are not arrived in 5002 timing of counter of counting module 20, this hour counter 5002 Output end, which is appointed, maintains low level state, and the state of third switch 5007 is constant, since the second NMOS tube 5004 has been in switch State, therefore the output of output module 30 at this time is that low-resistance and high resistant replace continuous state, puts aside charge on IGBT pipe at this time into one Step is by releasing of being continued of the second NMOS tube 5004, and the speed of charge discharging resisting is faster than releasing naturally before, here The reason of controlling the second 5004 continuous switch state of NMOS tube by signal generator 5013 is so that charge passes through second NMOS tube 5004 is unlikely to that heat localization occurs when being released, and is such as the pulse control of 100ns with 50% pulse width of duty ratio When second NMOS tube 5004 switchs, after 50% time released charge, in addition 50% time is for cooling down, if directly controlling the Two NMOS tubes 5004 are continuously turned on, it is possible to because charge the second NMOS tubes 5004 when to release relatively more can accumulated heat excessively with To damage.Adjustment circuit is restored to work normally after a preset time, and being conducive to IPM module 4100 in this way, more safety can The work leaned on.

If goal-selling time such as 1024us have been arrived in 5002 timing of counter of counting module 20, counter 5002 is counted When complete the second trigger signal of output high level so that second switch 5011 is connected, further such that third switch 5007 Control terminal also from connect with first choice end become with second selection end connect, at this time driving circuit export driving signal through defeated Module 30 and the output of first switch 5001 are managed to corresponding IGBT out, that is, the input terminal IN for realizing adjustment circuit can be normal defeated Output end OUT is arrived out, i.e. IPM module 4100 restores normal operating conditions.

The voltage value of above-mentioned adjustment circuit input terminal puts aside charge when restoring after falling, on IGBT pipe and passes through output module 30 times further released depended on voltage value and drop between the time of recovery and the timing time of counting module 20 Length relationship.If voltage value is long in the time for dropping into recovery, it has been more than the timing time of counting module 20, has then existed Putting aside charge progress nature electric discharge during this on IGBT pipe can release completely, therefore when voltage rises recovery, defeated Out module direct driving circuit output driving signal output and through first switch 5001 to corresponding IGBT pipe, do not need again into It passes through further the releasing of output module low resistance state.If voltage value is shorter in the time for dropping into recovery, it is less than count module The timing time of block 20, savings charge is released naturally through previous step when voltage, which rises, to be restored, on IGBT pipe may go back not exclusively, Further releasing through output module low resistance state is also needed, if the timing time 1024us of counting module 20, is risen in voltage The time of the timing of counting module 20 is TM when recovery.Its time TT further released calculates as follows：

TT=1024-TM

Its time TT ensure that charge is put aside on IGBT pipe further releases completely after previous step is released naturally.

The IPM module 4100 of the embodiment of the present invention between internal each driving circuit and corresponding IGBT pipe by increasing Add an adjustment circuit, the variation of 4100 low-pressure area voltage value of adjustment circuit energy real-time detection IPM module, and it is low at its Pressure power supply fluctuation causes voltage value is too low module is made to stop output so that the energy storage of driving motor causes inside modules IGBT pipe put aside charge when, can be initially switched off driving output and IGBT pipe driving signal so that IGBT pipe savings charge it is advanced Row is released naturally, and the adjustment circuit starts timing at this time, then when low-voltage power supply restores normal, if voltage value reduces To recovery time it is long be more than that the driving signal of object time then direct controlling and driving circuit output is managed to corresponding IGBT, if The time that voltage value is reduced to recovery is less than the object time, then defeated in timing to the remaining time of object time when taking voltage to restore Low-resistance and high resistant alternating state further quickly release to IGBT pipe savings charge out, to guarantee peace when being released Entirely, accumulated heat excessively causes the metal-oxide-semiconductor inside adjustment circuit to damage when will not be because releasing.Therefore it both ensure that in this way in IGBT pipe product Electric power storage lotus can be quickly obtained it is safer release, and can be shortened what IPM module 4100 was restored in low-voltage power supply voltage fluctuation Time allows module more quickly to restore to work normally, and avoids electric power storage lotus simultaneously and influence its work to the impact of module Make reliability.

Further, intelligent power module first embodiment of the present invention, the air condition of that present invention intelligent power module the are based on In two embodiments, as shown in figure 4, each adjustment circuit further includes shaping amplification module, it is with UH output regulation circuit 14A Example, UH output regulation circuit 14A further includes shaping amplification module 40：

40 input terminal of shaping amplification module connects the input terminal of adjustment circuit 14A, the connection of 40 output end of shaping amplification module The input terminal of output module 30, shaping amplification module 40 be adjustment circuit input end signal amplify with exported after shaping to The input terminal of output module 30.

Specifically, shaping amplification module 40 includes third NOT gate 5005 and the 4th NOT gate 5006；

The input terminal of third NOT gate 5005 is the input terminal of shaping amplification module 40, the output end connection of third NOT gate 5005 The input terminal of 4th NOT gate 5006, the output end of the 4th NOT gate 5006 are the output end of shaping amplification module 40.

In 4100 course of normal operation of IPM module, the input signal of the input terminal IN of adjustment circuit is through third NOT gate 5005 and 5006 the two poles of the earth of the 4th NOT gate amplification and shaping after, by the first PMOS tube 5003 of output module 30 and the second NMOS tube It is exported after 5004 progress power drives.

Further, the size for constituting third NOT gate 5005 and the metal-oxide-semiconductor in the 4th NOT gate 5006 can be different, and third is non- The metal-oxide-semiconductor size of door 5005 is smaller than 5006 size of the 4th NOT gate, because of signal its signal first after the amplification of third NOT gate 5005 Intensity increases, and increases when being amplified by the 4th NOT gate 5006 its device power, therefore the design size of its internal metal-oxide-semiconductor is comparable Third NOT gate 5005 it is big, such as the metal-oxide-semiconductor size of third NOT gate 5005 may be designed as metal-oxide-semiconductor size in the 4th NOT gate 5006 1/2。

Further, intelligent power module first embodiment of the present invention, the air condition of that present invention intelligent power module the are based on In three embodiments, as shown in figure 4, output module 30 further includes shaping unit 31；

The input terminal of the output end connection shaping unit 31 of second switch 5011, the output end of shaping unit 31 are opened for third 5007 control terminal is closed, is exported after the control signal shaping that shaping unit 31 exports for second switch 5011 to third switch 5007 Control terminal.

Specifically, shaping unit 31 includes the first NOT gate 5010 and the second NOT gate 5008；

The input terminal of first NOT gate 5010 is the input terminal of shaping unit 21, the output end connection second of the first NOT gate 5010 The input terminal of NOT gate 5008, the output end of the second NOT gate 5008 are the output end of shaping unit 21.

First NOT gate 5010 and the second NOT gate 5008 export after providing the control signal shaping exported to second switch 5011 To the control terminal of third switch 5007.

The present invention also provides a kind of controller of air conditioner, controller of air conditioner is for realizing being responsible for air conditioner correlation Control, specifically, controller of air conditioner can be divided into the control of indoor unit part and outdoor machine part for transducer air conditioning Device, indoor machine controller realize the driving to load runnings such as indoor unit blower motor, wind guide strips, outdoor unit control realization pair The driving of the load runnings such as compressor, outdoor fan motor, four-way valve wherein includes above-mentioned IPM module in outdoor controller, Driving for running to compressor further includes being used for inside outdoor controller if outdoor fan motor is DC fan The above-mentioned IPM module of DC fan is driven, if agreement indoor fan motor is DC fan, is also wrapped inside indoor controller Include the above-mentioned IPM module for driving DC fan.Its IPM module specific embodiment and effect can refer to above-mentioned implementation Example, details are not described herein.

In the description of this specification, the description meaning of reference term " first embodiment ", " second embodiment ", " example " etc. Refer to specific method, device or feature described in conjunction with this embodiment or example be contained at least one embodiment of the present invention or In example.In the present specification, the schematic representation of the above terms does not necessarily have to refer to the same embodiment or example.And And specific features, method, apparatus or the feature of description can be in any one or more of the embodiments or examples with suitable sides Formula combines.In addition, without conflicting with each other, those skilled in the art can will be described in this specification different real The feature for applying example or example and different embodiments or examples is combined.

The above is only a preferred embodiment of the present invention, is not intended to limit the scope of the invention, all to utilize this hair Equivalent structure or equivalent flow shift made by bright specification and accompanying drawing content is applied directly or indirectly in other relevant skills Art field, is included within the scope of the present invention.

Claims

1. a kind of intelligent power module, which is characterized in that including bridge arm IGBT pipe on three-phase and three-phase lower bridge arm IGBT pipe, and Driving circuit corresponding with each IGBT pipe in bridge arm IGBT pipe on the three-phase and three-phase lower bridge arm IGBT pipe and adjustment electricity Road；

Each driving circuit output end connects the signal input part of each corresponding adjustment circuit, each institute The signal output end for stating adjustment circuit connects the grid of corresponding each IGBT；

Each IGBT manages the anode and cathode difference of the power end of corresponding adjustment circuit in bridge arm IGBT pipe on the three-phase Connect the higher-pressure region power supply anode and cathode of corresponding phase；Each IGBT pipe is corresponding in the three-phase lower bridge arm IGBT pipe The anode and cathode of the power end of adjustment circuit are separately connected the positive and negative of the intelligent power module low-pressure area power supply Pole；Wherein,

The adjustment circuit is used to detect the voltage value of its power end, described when the voltage value is less than predetermined voltage threshold Adjustment circuit cuts off the driving circuit and exports to the driving signal of corresponding IGBT pipe and start timing, when timing time is not up to The goal-selling time, and when the voltage value is more than or equal to the predetermined voltage threshold, the adjustment circuit exports low-resistance Replace continuous state with high resistant the charge for corresponding to IGBT pipe to be released；When timing time reaches the goal-selling Between when, control the driving circuit output drive signal and manage to corresponding IGBT；

Each adjustment circuit includes voltage detection module, counting module, signal generator, output module and first switch；

The input terminal of the voltage detection module, the power end of the counting module, the power end of the signal generator and institute The power end interconnection for stating output module, constitutes the power end of the adjustment circuit；The output end of the voltage detection module is distinguished It is connect with the control terminal of the input terminal of the counting module and the first switch；Described in the output end connection of the counting module First control terminal of output module；The output end of the signal generator connects the second control terminal of the output module；It is described The input terminal of output module is the signal input part of the adjustment circuit, and the output end connection described first of the output module is opened The input terminal of pass, the output end of the first switch are the signal output end of the adjustment circuit.

2. intelligent power module as described in claim 1, which is characterized in that

The voltage detection module, for being less than predetermined voltage threshold in the voltage value for detecting the adjustment circuit input terminal When, it controls the counting module and starts timing, and control connection of the first switch by working normally when and switch to disconnect；

The counting module, for starting timing, the first trigger signal of output and the pulse with signal generator output Signal controls output module output low-resistance and high resistant alternating continuous state simultaneously；

When timing time is not up to the goal-selling time, and the voltage value is more than or equal to the predetermined voltage threshold, The low-resistance and high resistant alternating continuous state of the output module output release the charge of corresponding IGBT pipe；Work as timing time When reaching the goal-selling time, the counting module exports the second trigger signal and controls the driving circuit output driving letter Number to corresponding IGBT manage.

3. intelligent power module as claimed in claim 2, which is characterized in that the counting module includes the first NOT gate and counting Device；

The input terminal of first NOT gate is the counting module input terminal, and the output end of first NOT gate connects the counting Device input terminal, the counter output are the counting module output end.

4. intelligent power module as claimed in claim 2, which is characterized in that the voltage detection module includes comparator, electricity Potential source；

The in-phase end of the comparator is connect with the adjustment circuit power end anode, and the anode of the voltage source connects the ratio Compared with the reverse side of device, the cathode of the voltage source is connect with the adjustment circuit power end cathode.

5. intelligent power module as claimed in claim 2, which is characterized in that the output module includes second switch, third Switch, the first PMOS tube and the second NMOS tube；

The input terminal of the second switch and the source electrode of first PMOS tube connect with the adjustment circuit power end anode respectively It connects, the output end of the second switch connects the control terminal of the third switch, and the control terminal of the second switch is described defeated First control terminal of module out；

Second selection end of the third switch connects the grid of first PMOS tube, the fixing end connection of the third switch The grid of second NMOS tube, the drain electrode of first PMOS tube and the drain electrode connecting pin of second NMOS tube are described defeated Module output end out, the second NMOS tube source electrode are connect with the adjustment circuit power end cathode.

6. intelligent power module as claimed in claim 5, which is characterized in that the output module further includes shaping unit；

The output end of the second switch connects the input terminal of the shaping unit, and the output end of the shaping unit is described the The control terminal of three switches, the shaping unit are opened for output to the third after the control signal shaping of second switch output The control terminal of pass.

7. intelligent power module as claimed in claim 6, which is characterized in that the shaping unit includes the first NOT gate and second NOT gate；

The input terminal of first NOT gate is the input terminal of the shaping unit, the output end connection described the of first NOT gate The input terminal of two NOT gates, the output end of second NOT gate are the output end of the shaping unit.

8. intelligent power module as claimed in claim 2, which is characterized in that each described adjustment circuit further includes that shaping is put Big module：

The shaping amplification module input terminal connects the input terminal of the adjustment circuit, the shaping amplification module output end connection The input terminal of the output module, the shaping amplification module amplifies for the input end signal of the adjustment circuit and shaping It is exported afterwards to the input terminal of the output module.

9. intelligent power module as claimed in claim 8, which is characterized in that the shaping amplification module include third NOT gate and 4th NOT gate；

The input terminal of the third NOT gate is the input terminal of the shaping amplification module, and the output end of the third NOT gate connects institute The input terminal of the 4th NOT gate is stated, the output end of the 4th NOT gate is the output end of shaping amplification module.

10. a kind of controller of air conditioner, the controller of air conditioner includes intelligent power as described in any one of claim 1 to 9 Module.