CN209184501U - Electric appliance and intelligent power module - Google Patents

Abstract

The utility model discloses a kind of electric appliance and intelligent power module, comprising: rectifier bridge；The PFC pfc circuit being connected with rectifier bridge；Bridge arm compressor controllable switch and at least one lower bridge arm compressor controllable switch at least one for being controlled compressor；Bridge arm blower controllable switch and at least one lower bridge arm blower controllable switch at least one for being controlled blower；Driving circuit, respectively with bridge arm compressor controllable switch at least one and at least one lower bridge arm compressor controllable switch, bridge arm blower controllable switch and at least one lower bridge arm blower controllable switch at least one, for being driven to compressor switch pipe and fan switch pipe；General protective circuit is connected with driving circuit, for protecting to driving circuit.Integrated level, the reliability for improving intelligent power module as a result, reduce costs, reduce volume.

Description

Electric appliance and intelligent power module

Technical field

This application involves technical field of electric appliances, in particular to a kind of intelligent power module and a kind of electric appliance.

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 interior keeps the fault detection circuits such as overvoltage, overcurrent and overheat.On the one hand intelligent power module receives the control of MCU Signal, driving subsequent conditioning circuit work, on the other hand sends the state detection signal of system back to MCU.Compared with traditional discrete scheme, Intelligent power module wins increasing market with advantages such as its high integration, high reliability, is particularly suitable for driving motor Frequency converter and various inverters, be frequency control, metallurgical machinery, electric propulsion, servo-drive, a kind of reason of frequency-conversion domestic electric appliances Think power electronic devices.

IPM is widely applied in convertible frequency air-conditioner, and current convertible frequency air-conditioner includes: blower, compressor contracting machine and PFC (Power Factor Correction, PFC), this three are driven by three discrete IPM, for example, such as Figure 1A With shown in Figure 1B, wherein IPM1 is the IPM for controlling compressor in Figure 1A, and IPM2 be the IPM of control blower in Figure 1B.It leads as a result, The automatically controlled cost of manufacture of cause air-conditioning is high, reliability is low, circuit system wiring difficulty is also larger.With convertible frequency air-conditioner dosage not Disconnected to increase, the case of convertible frequency air-conditioner failure increases with it, and has 50% or more convertible frequency air-conditioner failure to appear in existing driving system On system；In addition, convertible frequency air-conditioner is higher relative to the price of fixed frequency air conditioner, reduce the manufacturing cost of convertible frequency air-conditioner drive system also at For important topic.Therefore, highly integrated, miniaturization and cost declining are the development trends of the following IPM.In the related technology, such as Fig. 2 Shown, current highly integrated IPM is only so simple that integrate by internal circuits such as blower, compressors merely, can not expire Current demand of the air conditioner to highly integrated IPM of foot.

Utility model content

The embodiment of the present application by providing a kind of electric appliance and intelligent power module, by by rectifier bridge, blower, compressor and Pfc circuit, driving circuit and general protective circuit are integrally disposed, can reduce IPM internal wiring difficulty, while reducing air conditioner electric The wiring difficulty of control, sufficiently raising system reliability, and simple and reasonable, flexible operation, low manufacture cost, reliability Feature high, applied widely.

This application provides a kind of intelligent power module, rectifier bridges；The PFC PFC being connected with the rectifier bridge Circuit, wherein the switch sections of the pfc circuit are arranged among the intelligent power module；Bridge arm compresses at least one Machine controllable switch and at least one lower bridge arm compressor controllable switch, control for the compressor to the air conditioner；Extremely Few one upper bridge arm blower controllable switch and at least one lower bridge arm blower controllable switch, for the blower to the air conditioner into Row control；Driving circuit, the driving circuit respectively with the bridge arm compressor controllable switch at least one and at least one Lower bridge arm compressor controllable switch and the bridge arm blower controllable switch at least one and at least one lower bridge arm blower can Control switch, for described bridge arm compressor controllable switch and at least one lower bridge arm compressor controllable switch at least one, And the bridge arm blower controllable switch at least one and at least one lower bridge arm blower controllable switch are driven；And it is comprehensive Protection circuit is closed, the general protective circuit is connected with the driving circuit, for protecting to the driving circuit.

In addition, can also have the following additional technical features: according to the application intelligent power module set forth above

Specifically, at least one bridge arm compressor controllable switch include: bridge arm compressor controllable switch on described first, Bridge arm compressor controllable switch in bridge arm compressor controllable switch and third on second；At least one described lower bridge arm compressor can Control switch includes: the first lower bridge arm compressor controllable switch, the second lower bridge arm compressor controllable switch and the compression of third lower bridge arm Machine controllable switch；The bridge arm blower controllable switch at least one includes: bridge arm blower controllable switch on first, bridge on second Bridge arm blower controllable switch on arm blower controllable switch and third；At least one described lower bridge arm blower controllable switch includes: One lower bridge arm blower controllable switch, the second lower bridge arm blower controllable switch and third lower bridge arm blower controllable switch.

Specifically, the general protective circuit includes: and the first lower bridge arm compressor controllable switch, the second lower bridge arm The first connected sampling resistor of compressor controllable switch, third lower bridge arm compressor controllable switch；With the first lower bridge arm wind The second connected sampling resistor of machine controllable switch, the second lower bridge arm blower controllable switch, third lower bridge arm blower controllable switch；With The first overcurrent protection module that first sampling resistor is connected with described second using resistance；With the first overcurrent protection mould The connected protection decision-making module of block.

Specifically, the general protective circuit further include: the temperature sensor inside the intelligent power module is set； The overheat protector module being connected with the temperature sensor, wherein the overheat protector module and the protection decision-making module phase Even.

Specifically, the general protective circuit further include: under-voltage protective module, the under-voltage protective module and the protection Decision-making module is connected.

Specifically, the general protective circuit is connected with the pfc circuit, for protecting to the pfc circuit.

Specifically, the general protective circuit further include: the third sampling resistor being connected with the pfc circuit；With it is described The second connected overcurrent protection module of third sampling resistor, wherein second overcurrent protection module and the protection decision model Block is connected.

Specifically, the protection decision-making module includes: and first overcurrent protection module and second overcurrent protection The first connected decision submodule of module, for according to first overcurrent protection module and second overcurrent protection module Output signal generates the first decision signal；The second decision being connected with the under-voltage protective module and the overheat protector module Module, for the output signal and first decision signal according to the under-voltage protective module and the overheat protector module Generate decision signal.

Further, above-mentioned intelligent power module, further includes: resistance, the first end of the resistance and the intelligent function The high voltage power supply of rate module is connected, and the second end of the resistance is connected with the end RCIN of the comprehensive protection module；Capacitor, it is described The first end of capacitor is connected with the low-tension supply of the intelligent power module, the second end of the capacitor and the integrated protection mould The end RCIN of block is connected.

Specifically, the first decision submodule includes: the first nor gate, the first input end of first nor gate with First overcurrent protection module is connected, and the second end of first nor gate is connected with second overcurrent protection module；The One NOT gate, the input terminal of first NOT gate are connected with first overcurrent protection module；First switch tube, the first switch The control terminal of pipe is connected with the output end of first NOT gate, and the first end of the first switch tube is connected with the end RCIN, The second end of the first switch tube is grounded；Second switch, the control terminal of the second switch and second decision Module is connected, and the first end of the second switch is connected with the enable end of the protection decision-making module, the second switch Second end ground connection；First trigger, the input terminal of first trigger are connected with the end RCIN；Second trigger, institute The first input end for stating the second trigger is connected with first nor gate, the second input terminal of second trigger with it is described The output end of first trigger is connected, and the output end of second trigger exports first decision signal.

Specifically, first trigger is Schmidt trigger, and second trigger is rest-set flip-flop.

Specifically, the second decision submodule includes: the second nor gate, the first input end of second nor gate with First decision signal is connected, and the second input terminal of second nor gate is connected with the under-voltage protective module；Third or NOT gate, the first input end of the third nor gate are connected with the output end of second nor gate, the third nor gate Second input terminal is connected with the overheat protector module, the output end of the third nor gate and the input of the second switch End is connected；Four nor gate, the first input end of the four nor gate is connected with the output end of the third nor gate, described Second input terminal of four nor gate is connected with the enable end；Second NOT gate, the input terminal of second NOT gate and described the The output end of four nor gate is connected, and second NOT gate exports the decision signal.

This application provides a kind of electric appliances, comprising: above-mentioned intelligent power module.

One or more technical solutions provided herein, have at least the following technical effects or advantages:

1, IPM internal wiring difficulty is reduced, while reducing the wiring difficulty of air conditioner electric control, sufficiently raising system reliability, By the design of built-in sampling resistor, temperature sensor and general protective circuit, the integrated of highly integrated IPM can be further improved Degree, and greatly reduce pin number, the design that can reduce the frequency-changeable compressor of convertible frequency air-conditioner and the electric-controlled plate of frequency conversion fan is difficult Degree and volume.

2, interior design general protective circuit, can be handled by signals such as excess-current excess-temperature under-voltage protections, compressor IPM, blower IPM and PFC either party break down, this three parts can be made to stop working, to protect device and electric-controlled plate, mentioned High IPM and automatically controlled reliability.

3, simple and reasonable, flexible operation, low manufacture cost, high reliablity, feature applied widely.

4, motor driven is simplified, with the board space accelerated engineering design, reduce occupancy, household electrical appliance can be met Demand of the market to the thermal efficiency, reliability and small board space provides highly integrated solution for air-conditioning frequency conversion board, real Existing high energy efficiency and highly reliable appliance design.

Detailed description of the invention

The application is above-mentioned and/or additional aspect and advantage will become from the following description of the accompanying drawings of embodiments Obviously and it is readily appreciated that, in which:

Figure 1A and Figure 1B is a kind of circuit diagram of intelligent power module in the related technology；

Fig. 2 is the circuit diagram of another intelligent power module in the related technology；

Fig. 3 is the circuit diagram of the intelligent power module of the embodiment of the present application one；

Fig. 4 is the structural schematic diagram of general protective circuit in Fig. 3.

Specific embodiment

In order to solve in the prior art, blower, compressor and PFC are driven by three discrete IPM respectively, lead to electric-controlled plate The problem that cost of manufacture is high, reliability is low, circuit system wiring difficulty is big, and merely by internal circuits such as blower, compressors It is simple integrated and to be unable to satisfy the problem of current air conditioner is to highly integrated IPM demand together, by by rectifier bridge, blower, compression Machine and pfc circuit, driving circuit and general protective circuit are integrally disposed, can reduce IPM internal wiring difficulty, while reducing sky Adjust automatically controlled wiring difficulty, sufficiently raising system reliability, and simple and reasonable, flexible operation, low manufacture cost, reliable Property high, feature applied widely.

In order to better understand the above technical scheme, the exemplary reality of the disclosure is more fully described below with reference to accompanying drawings Apply example.Although showing the exemplary embodiment of the disclosure in attached drawing, it being understood, however, that may be realized in various forms this public affairs It opens and should not be limited by the embodiments set forth herein.It is to be able to thoroughly understand this on the contrary, providing these embodiments It is open, and the scope of the present disclosure can be fully disclosed to those skilled in the art.

The intelligent power module and electric appliance of the embodiment of the present application described with reference to the accompanying drawing.

Embodiment one

Fig. 3 is the circuit diagram of the intelligent power module of the embodiment of the present application one.It is above-mentioned in embodiments herein Electric appliance can be air conditioner, washing machine, refrigerator, electromagnetic oven etc., and preceding sections may be implemented in intelligent power module therein Described in function possessed by intelligent power module.It is illustrated by taking air conditioner as an example below.

As shown in figure 3, the intelligent power module of the embodiment of the present application, it may include: rectifier bridge D, the function being connected with rectifier bridge D Rate factor correcting pfc circuit 100, bridge arm compressor controllable switch and at least one lower bridge arm compressor are controllably opened at least one Close bridge arm blower controllable switch and at least one lower bridge arm blower controllable switch at least one, driving circuit 200 and comprehensive guarantor Protection circuit 300.

Wherein, the switch sections of pfc circuit 100 are arranged among intelligent power module.Bridge arm compressor at least one Controllable switch and at least one lower bridge arm compressor controllable switch are for controlling the compressor of air conditioner.On at least one Bridge arm blower controllable switch and at least one lower bridge arm blower controllable switch are for controlling the blower of air conditioner.Driving electricity Road 200 respectively with bridge arm compressor controllable switch at least one and at least one lower bridge arm compressor controllable switch, Yi Jizhi A few upper bridge arm blower controllable switch is connected at least one lower bridge arm blower controllable switch, for bridge arm at least one Compressor controllable switch and at least one lower bridge arm compressor controllable switch and at least one on bridge arm blower controllable switch with At least one lower bridge arm blower controllable switch is driven.General protective circuit 300 is connected with driving circuit 200, for drive Dynamic circuit 200 is protected.

According to one embodiment of the application, bridge arm compressor controllable switch includes: bridge arm pressure on first at least one Contracting machine controllable switch IGBT1, bridge arm compressor controllable switch in bridge arm compressor controllable switch IGBT2 and third on second IGBT3；At least one lower bridge arm compressor controllable switch includes: the first lower bridge arm compressor controllable switch IGBT4, the second lower bridge Arm compressor controllable switch IGBT5 and third lower bridge arm compressor controllable switch IGBT6；Bridge arm blower is controllably opened at least one Pass includes: bridge arm blower controllable switch IGBT7 on first, bridge arm wind in bridge arm blower controllable switch IGBT8 and third on second Machine controllable switch IGBT9；At least one lower bridge arm blower controllable switch include: the first lower bridge arm blower controllable switch IGBT10, Second lower bridge arm blower controllable switch IGBT11 and third lower bridge arm blower controllable switch IGBT12.

Referring to Fig. 3, two ports AC are rectifier bridge D AC input mouth, and VDD is driving supply port, and VSS is driving Power negative terminal, FLT/EN be Fault export and enable port, PFCIN be PFC logic input signal input port, CHIN1,2,3 For bridge arm compression in bridge arm compressor controllable switch IGBT2 on bridge arm compressor controllable switch IGBT1 on first, second, third The logic input signal input terminal of machine controllable switch IGBT3, CLIN1,2,3 for the first lower bridge arm compressor controllable switch IGBT4, The logic input signal input of second lower bridge arm compressor controllable switch IGBT5, third lower bridge arm compressor controllable switch IGBT6 End, FHIN1 2,3 is bridge arm blower controllable switch IGBT7 on first, bridge arm blower controllable switch IGBT8 on second, in third The logic input signal input terminal of bridge arm blower controllable switch IGBT9, FLIN1,2,3 be the first lower bridge arm blower controllable switch IGBT10, lower bridge arm blower controllable switch IGBT11, the logic input signal of third lower bridge arm blower controllable switch IGBT12 are defeated Enter end, P3 is 100 busbar voltage of pfc circuit, and-P3 is 100 busbar voltage negative terminal of pfc circuit, and CVB1,2,3 be U, V, W phase first Upper bridge arm compressor controllable switch IGBT1, bridge arm compressor controllable switch IGBT2 on second, bridge arm compressor is controllable in third The floating power voltage end of switch IGBT3, CVCC are compressor DC bus-bar voltage, and CU, CV, CW is compressor U, V, and W phase is defeated Outlet ,-CU ,-CV ,-CW are U, V, and W phase the first lower bridge arm compressor controllable switch IGBT4, the second lower bridge arm compressor are controllably opened The emitter output end of IGBT5, third lower bridge arm compressor controllable switch IGBT6 are closed, CGND is the ground terminal of compressor IPM, FVB1,2,3 is U, V, bridge arm blower controllable switch IGBT7 in W phase first, bridge arm blower controllable switch IGBT8, third on second The floating power voltage end of upper bridge arm blower controllable switch IGBT9, FVCC are blower DC bus-bar voltage, and FU, FV, FW is compression Machine U, V, W phase output terminal ,-FU ,-FV ,-FW are U, V, W phase the first lower bridge arm blower controllable switch IGBT10, the second lower bridge arm wind The emitter output end of machine controllable switch IGBT11, third lower bridge arm blower controllable switch IGBT12, FGND are compressor IPM's Ground terminal.IGBT13 is pfc circuit switching tube, and R16 is PFC grid resistance, and resistance R1,2,3,4,5,6 is corresponding for compressor IGBT grid resistance, resistance R8,9,10,11,12,13 be the corresponding IGBT grid resistance of blower.

It should be noted that CHIN1,2,3 indicate CHIN1, CHIN2, CHIN3, CLIN1,2,3 tables in above-described embodiment Show CLIN1, CLIN2, CLIN3, FHIN1,2,3 indicate FHIN1, FHIN2, FHIN3, FLIN1,2, and 3 indicate FLIN1, FLIN2, FLIN3, CVB1,2,3 indicate CVB1, CVB2, CVB3, FVB1,2, and 3 indicate, FVB1, FVB2, FVB3, R1, and 2,3,4,5,6 indicate R1, R2, R3, R4, R5, R6, R8,9,10,11,12,13 indicate, R8, R9, R10, R11, R12, R13.For the convenience of description, It is marked in Fig. 3 with abbreviated form.Wherein, the first sampling resistor R7, R8, R9 indicate, the second sampling resistor R14 with R7,8,9, R19, R20 R14,19,20 indicate, for the convenience of description, in the following embodiments, bridge arm compressor controllable switch on first IGBT1, bridge arm compressor controllable switch IGBT2 on second, bridge arm compressor controllable switch IGBT3 IGBT1 in third, 2,3 It indicates, the first lower bridge arm compressor controllable switch IGBT4, the second lower bridge arm compressor controllable switch IGBT5, third lower bridge arm pressure Contracting machine controllable switch IGBT6 IGBT4,5,6 indicate, bridge arm blower controllable switch IGBT7 on first, bridge arm blower can on second Bridge arm blower controllable switch IGBT9 IGBT7 on control switch IGBT8, third, 8,9 indicate, the first lower bridge arm blower controllable switch IGBT10, the second lower bridge arm blower controllable switch IGBT11, third lower bridge arm blower controllable switch IGBT12 IGBT10,11, 12 indicate；First sampling resistor is all made of R7, and 8,9 are indicated, and the second sampling resistor is all made of R14, and 19,20 are indicated.

By by compressor of air conditioner IPM, the switch sections of blower IPM and pfc circuit, driving circuit and general protective circuit It is arranged among intelligent power module, integrated level with higher not only reduces the wiring difficulty inside intelligent power module, The wiring difficulty of air conditioner electric control is reduced simultaneously, substantially increase system reliability, reduce the compressor and blower of air-conditioning The design difficulty and volume of electric-controlled plate have simple and reasonable, flexible operation, low manufacture cost, high reliablity, the scope of application Wide feature.

Further, as shown in figure 3, above-mentioned intelligent power module, further includes: resistance R17 and capacitor C2, wherein electricity The first end of resistance R17 is connected with the high voltage power supply VDD of intelligent power module, the second end and comprehensive protection module 300 of resistance R17 The end RCIN be connected, the first end of capacitor C2 is connected with the low-tension supply VSS of intelligent power module, the second end of capacitor C2 with it is comprehensive The end RCIN for closing protective module 300 is connected.Resistance R17 plays the role of current limliting, and to protect chip pin, capacitor C2 plays filtering Effect.

In one embodiment of the application, as shown in Figure 3 and Figure 4, general protective circuit 300 can include: under first Bridge arm compressor controllable switch IGBT4, the second lower bridge arm compressor controllable switch IGBT5, third lower bridge arm compressor are controllably opened Close the first connected sampling resistor R7 of IGBT6, controllable with the first lower bridge arm blower controllable switch IGBT10, the second lower bridge arm blower The second switch IGBT11, third lower bridge arm blower controllable switch IGBT12 connected sampling resistor R14 and the first sampling resistor R7 The first overcurrent protection module 310 being connected with the second use resistance R14, the protection being connected with the first overcurrent protection module 310 are determined Plan module 320.Wherein, the first sampling resistor R7 is the current sampling resistor of compressor IPM, and the second sampling resistor R14 is blower The current sampling resistor of IPM.

That is, the switching device in order to protect IPM and pfc circuit, can generally be arranged sampling resistor, sampling resistor is adopted Collect the first lower bridge arm compressor controllable switch IGBT4, the second lower bridge arm compressor controllable switch IGBT5, the compression of third lower bridge arm Machine controllable switch IGBT6 and the first lower bridge arm blower controllable switch IGBT10, the second lower bridge arm blower controllable switch IGBT11, Over-current signal can be fed back to the first mistake when overcurrent occurs by the current information of three lower bridge arm blower controllable switch IGBT12 Protective module 310 is flowed, so that protection decision-making module 320 takes appropriate measures, is played a protective role.

Referring to shown in Fig. 3 and Fig. 4, in one embodiment of the application, general protective circuit 300 may also include that setting Temperature sensor 360 inside intelligent power module, the overheat protector module 330 being connected with temperature sensor 360, wherein Overheat protector module 330 is connected with protection decision-making module 320.

With continued reference to shown in Fig. 3 and Fig. 4, in one embodiment of the application, general protective circuit 300 may also include that Under-voltage protective module 340, under-voltage protective module 340 are connected with protection decision-making module 320.

With continued reference to shown in Fig. 3 and Fig. 4, in one embodiment of the application, general protective circuit 300 and pfc circuit 100 are connected, for protecting to pfc circuit 100.

With continued reference to shown in Fig. 3 and Fig. 4, in one embodiment of the application, general protective circuit 300 may also include that The third sampling resistor R15 being connected with pfc circuit 100, the second overcurrent protection module 350 being connected with third sampling resistor R15, Wherein, it is connected with protection decision-making module 320 for 350 pieces of the second overcurrent protection mould.Third sampling resistor R15 is the electricity of pfc circuit 100 Flow sampling resistor.

Specifically, inside general protective circuit 300 comprising the first overcurrent protection module 310, the second overcurrent protection mould 350, Under-voltage protective module 340 and overheat protector module 330.Unlike highly integrated IPM shown in Fig. 2: blower, compressor and Pfc circuit shares a set of protection circuit, the collected over-current signal of sampling resistor R15, R7, R14 by PFCTRIP, CITRIP, The port FITRIP, is transmitted to general protective circuit 300, and the temperature signal that temperature sensor 360 detects passes through TH port transmission It is electric to be used for processing driving equipped with under-voltage protective module 340 to up to general protective circuit 300, while inside general protective circuit 300 After pressing under-voltage signal, overcurrent, excessively mild under-voltage signal to handle by general protective circuit 300, final output EN-DRI signal, with The driving circuit 200 for controlling blower, compressor and PFC switching tube, thus the working condition of control switch pipe.

Referring to shown in Fig. 4, in one embodiment of the application, decision-making module 320 is protected can include: protect with the first overcurrent The first decision submodule 3321 that shield module 310 is connected with the second overcurrent protection module 350, for according to the first overcurrent protection mould The output signal of block 310 and the second overcurrent protection module 350 generates the first decision signal；With under-voltage protective module 340 and excess temperature The second connected decision submodule 322 of protective module 330, for according to under-voltage protective module 340 and overheat protector module 330 Output signal and the first decision signal generate decision signal.

Further, as shown in figure 4, the first decision submodule 321 can include: the first nor gate 41, the first NOT gate 42, One switching tube 49, second switch 50, the first trigger 48 and the second trigger 43.Wherein, the first of the first nor gate 41 is defeated Enter end to be connected with the first overcurrent protection module 310, the second end of the first nor gate 41 is connected with the second overcurrent protection module 350； The input terminal of first NOT gate 42 is connected with the first overcurrent protection module 310；The control terminal of first switch tube 49 and the first NOT gate 42 Output end be connected, the first end of first switch tube 49 is connected with the end RCIN, and the second end of first switch tube 49 is grounded；Second opens The control terminal for closing pipe 50 is connected with the second decision submodule 322, first end and the protection decision-making module 320 of second switch 50 Enable end FLT/EN is connected, the second end ground connection of second switch 50；The input terminal of first trigger 48 is connected with the end RCIN；The The first input end of two triggers 43 is connected with the first nor gate 41, the second input terminal and the first trigger of the second trigger 43 48 output end is connected, and the output end of the second trigger 43 exports the first decision signal.

Wherein, nor gate is the gate circuit with multiterminal input and Single-end output, when any input terminal (or multiterminal) are height When level (logical one), output is exactly low level (logical zero)；Only when all input terminals are all low level (logical zeroes) When, output is only high level (logical one).

NOT gate has an input and an output end, and when its input terminal is high level (logical one), output end is low electricity Flat (logical zero), when its input terminal is low level, output end is high level, that is to say, that the level of input terminal and output end State always reverse phase.

In one embodiment of the application, the first trigger 48 can be Schmidt trigger, and the second trigger 43 can Think rest-set flip-flop.

Wherein, Schmidt trigger is a kind of special gate circuit, and different from common gate circuit, Schmidt trigger has Two threshold voltages, are referred to as forward threshold voltage and negative sense threshold voltage.High electricity is risen to from low level in input signal So that the changed input voltage of circuit state is known as forward threshold voltage in flat process, declines in input signal from high level The changed input voltage of circuit state is set to be known as negative sense threshold voltage in the process to low level.

Rest-set flip-flop is the element for constituting various other function triggers, also known as basic RS filpflop, Structure is input, the output end interconnection two NAND gates or nor gate G1, G2, for example, what two NAND gates were constituted Rest-set flip-flop, there are two input terminal R, S and two output end Q,(Q is non-), low level is effective.

With continued reference to Fig. 4, in one embodiment of the application, the second decision submodule 322 can include: the second nor gate 44, third nor gate 45, four nor gate 46 and the second NOT gate 47.Wherein, the first input end and first of the second nor gate 44 Decision signal is connected, and the second input terminal of the second nor gate 44 is connected with under-voltage protective module 340；The first of third nor gate 45 Input terminal is connected with the output end of the second nor gate 44, the second input terminal and 330 phase of overheat protector module of third nor gate 45 Even, the output end of third nor gate 45 is connected with the input terminal of second switch 50；The first input end of four nor gate 46 with The output end of third nor gate 45 is connected, and the second input terminal of four nor gate 46 is connected with enable end FLT/EN；Second NOT gate 47 input terminal is connected with the output end of four nor gate 46, and the second NOT gate 47 exports decision signal.

Specifically, in conjunction with Fig. 3 and Fig. 4, the end PFCTRIP is connected with the second overcurrent protection module 350, the end FITRIP and The end CITRIP is connected with the first overcurrent protection module 310,350 output signal of the second overcurrent protection module and the first overcurrent protection mould 310 output signal of block is handled by the first nor gate 41, RCIN end signal by the first trigger 48 (Schmidt trigger), with First nor gate, 41 output signal is handled by the second trigger 43 (rest-set flip-flop), and to export the first decision signal, first determines Plan signal and the output signal of under-voltage protective module 340 are handled by the second nor gate 44, the output of the second nor gate 44 The output of signal and input signal of 330 output signal of overheat protector module as third nor gate 45, third nor gate 45 is believed Number and input signal of the FLT/EN signal in enable end as four nor gate 46,46 output signal of four nor gate is by second non- Door 47 exports decision signal, as general protective circuit signal EN-DRI.Wherein, the output signal of the first NOT gate 42 is under RCIN The gate drive signal of first switch tube 49 is drawn, the output signal of third nor gate 45 is to pull down the grid drive of second switch 50 Dynamic signal.A set of general protective circuit is constituted as a result, it is defeated and if only if PFCTRIP, CITRIP, FITRIP, under-voltage protection processing When signal and the end TH (temperature value that temperature sensor 360 acquires) input signal are low level signal out, decision signal EN-DRI For high level signal, driving circuit 200 drives intelligent power module to work normally at this time；Conversely, intelligent power module will stop Work.

From above-mentioned analysis it is found that since current sampling resistor is built in intelligent power module (highly integrated IPM), over-current signal It is directly handled by internal general protective circuit, and then controls pfc circuit IPM, compressor IPM and blower IPM work, without using The port PFCTRIP, the port CITRIP, the port FITRIP；Mould is handled due to being provided with overheat protector inside general protective circuit again The temperature signal of block, temperature sensor acquisition is directly handled by general protective circuit, without using the port TH, is further improved The integrated level of intelligent power module, and greatly reduce pin number, in addition, CRCIN, FRCIN share a port RCIN, FFLT/EN, CFLT/EN share a port FLT/EN.Therefore, the intelligent power module of the application, greatly reduces port number Amount, can reduce the design difficulty and volume of the compressor of air-conditioning and the electric-controlled plate of blower, substantially increase intelligent power module Integrated level improves the reliability of system.

Technical solution in above-mentioned the embodiment of the present application, at least have the following technical effects or advantages:

1, IPM internal wiring difficulty is reduced, while reducing the wiring difficulty of air conditioner electric control, sufficiently raising system reliability, By the design of built-in sampling resistor, temperature sensor and general protective circuit, the integrated of highly integrated IPM can be further improved Degree, and greatly reduce pin number, the design that can reduce the frequency-changeable compressor of convertible frequency air-conditioner and the electric-controlled plate of frequency conversion fan is difficult Degree and volume.

2, interior design general protective circuit, can be handled by signals such as excess-current excess-temperature under-voltage protections, compressor IPM, blower IPM and PFC either party break down, this three parts can be made to stop working, to protect device and electric-controlled plate, mentioned High IPM and automatically controlled reliability.

3, simple and reasonable, flexible operation, low manufacture cost, high reliablity, feature applied widely.

4, motor driven is simplified, with the board space accelerated engineering design, reduce occupancy, household electrical appliance can be met Demand of the market to the thermal efficiency, reliability and small board space provides highly integrated solution for air-conditioning frequency conversion board, real Existing high energy efficiency and highly reliable appliance design.

In order to realize above-described embodiment, the application also proposes a kind of electric appliance comprising above-mentioned intelligent power module.

The electric appliance of the embodiment of the present application can be improved reliability of operation by above-mentioned intelligent power module.

It should be understood by those skilled in the art that, embodiments herein can provide as method, system or computer program Product.Therefore, complete hardware embodiment, complete software embodiment or reality combining software and hardware aspects can be used in the application Apply the form of example.Moreover, it wherein includes the computer of computer usable program code that the application, which can be used in one or more, The computer program implemented in usable storage medium (including but not limited to magnetic disk storage, CD-ROM, optical memory etc.) produces The form of product.

The application is referring to method, the process of equipment (system) and computer program product according to the embodiment of the present application Figure and/or block diagram describe.It should be understood that every one stream in flowchart and/or the block diagram can be realized by computer program instructions The combination of process and/or box in journey and/or box and flowchart and/or the block diagram.It can provide these computer programs Instruct the processor of general purpose computer, special purpose computer, Embedded Processor or other programmable data processing devices to produce A raw machine, so that being generated by the instruction that computer or the processor of other programmable data processing devices execute for real The device for the function of being specified in present one or more flows of the flowchart and/or one or more blocks of the block diagram.

These computer program instructions, which may also be stored in, is able to guide computer or other programmable data processing devices with spy Determine in the computer-readable memory that mode works, so that it includes referring to that instruction stored in the computer readable memory, which generates, Enable the manufacture of device, the command device realize in one box of one or more flows of the flowchart and/or block diagram or The function of being specified in multiple boxes.

These computer program instructions also can be loaded onto a computer or other programmable data processing device, so that counting Series of operation steps are executed on calculation machine or other programmable devices to generate computer implemented processing, thus in computer or The instruction executed on other programmable devices is provided for realizing in one or more flows of the flowchart and/or block diagram one The step of function of being specified in a box or multiple boxes.

It should be noted that in the claims, any reference symbol between parentheses should not be configured to power The limitation that benefit requires.Word "comprising" does not exclude the presence of component or step not listed in the claims.Before component Word "a" or "an" does not exclude the presence of multiple such components.The application can be by means of including several different components It hardware and is realized by means of properly programmed computer.In the unit claims listing several devices, these are filled Several in setting, which can be, to be embodied by the same item of hardware.The use of word first, second, and third is not Indicate any sequence.These words can be construed to title.

Although the preferred embodiment of the application has been described, it is created once a person skilled in the art knows basic Property concept, then additional changes and modifications may be made to these embodiments.So it includes excellent that the following claims are intended to be interpreted as It selects embodiment and falls into all change and modification of the application range.

Obviously, those skilled in the art can carry out various modification and variations without departing from this hair to the application

Bright spirit and scope.If in this way, these modifications and variations of the application belong to the claim of this application and its Within the scope of equivalent technologies, then the application is also intended to include these modifications and variations.

Claims (13)

1. a kind of intelligent power module characterized by comprising

Rectifier bridge；

The PFC pfc circuit being connected with the rectifier bridge, wherein the switch sections of the pfc circuit are arranged in institute It states among intelligent power module；

Bridge arm compressor controllable switch and at least one lower bridge arm compressor controllable switch at least one, for air conditioner Compressor is controlled；

Bridge arm blower controllable switch and at least one lower bridge arm blower controllable switch at least one, for the air conditioner Blower is controlled；

Driving circuit, the driving circuit respectively with the bridge arm compressor controllable switch at least one and at least one lower bridge Arm compressor controllable switch and the bridge arm blower controllable switch at least one and at least one lower bridge arm blower are controllably opened It closes and is connected, for described bridge arm compressor controllable switch and at least one lower bridge arm compressor controllable switch at least one, And the bridge arm blower controllable switch at least one and at least one lower bridge arm blower controllable switch are driven；And

General protective circuit, the general protective circuit are connected with the driving circuit, for protecting to the driving circuit Shield.

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

The bridge arm compressor controllable switch at least one includes: bridge arm compressor controllable switch on first, bridge arm on second Bridge arm compressor controllable switch on compressor controllable switch and third；

At least one described lower bridge arm compressor controllable switch includes: the first lower bridge arm compressor controllable switch, the second lower bridge arm Compressor controllable switch and third lower bridge arm compressor controllable switch；

The bridge arm blower controllable switch at least one includes: bridge arm blower controllable switch on first, bridge arm blower on second Bridge arm blower controllable switch on controllable switch and third；

At least one described lower bridge arm blower controllable switch includes: the first lower bridge arm blower controllable switch, the second lower bridge arm blower Controllable switch and third lower bridge arm blower controllable switch.

3. intelligent power module as claimed in claim 2, which is characterized in that the general protective circuit includes:

With the first lower bridge arm compressor controllable switch, the second lower bridge arm compressor controllable switch, third lower bridge arm compressor The first connected sampling resistor of controllable switch；

It is controllably opened with the first lower bridge arm blower controllable switch, the second lower bridge arm blower controllable switch, third lower bridge arm blower Close the second connected sampling resistor；

The first overcurrent protection module being connected with first sampling resistor and described second using resistance；

The protection decision-making module being connected with first overcurrent protection module.

4. intelligent power module as claimed in claim 3, which is characterized in that the general protective circuit further include:

Temperature sensor inside the intelligent power module is set；

The overheat protector module being connected with the temperature sensor, wherein the overheat protector module and the protection decision model Block is connected.

5. intelligent power module as claimed in claim 4, which is characterized in that the general protective circuit further include:

Under-voltage protective module, the under-voltage protective module are connected with the protection decision-making module.

6. intelligent power module as claimed in claim 5, which is characterized in that the general protective circuit and the pfc circuit It is connected, for being protected to the pfc circuit.

7. intelligent power module as claimed in claim 6, which is characterized in that the general protective circuit further include:

The third sampling resistor being connected with the pfc circuit；

The second overcurrent protection module being connected with the third sampling resistor, wherein second overcurrent protection module with it is described Decision-making module is protected to be connected.

8. intelligent power module as claimed in claim 7, which is characterized in that the protection decision-making module includes:

The first decision submodule being connected with first overcurrent protection module and second overcurrent protection module is used for basis The output signal of first overcurrent protection module and second overcurrent protection module generates the first decision signal；

The second decision submodule being connected with the under-voltage protective module and the overheat protector module, for according to described under-voltage The output signal and first decision signal of protective module and the overheat protector module generate decision signal.

9. intelligent power module as claimed in claim 8, which is characterized in that further include:

Resistance, the first end of the resistance are connected with the high voltage power supply of the intelligent power module, the second end of the resistance with The end RCIN of the comprehensive protection module is connected；

Capacitor, the first end of the capacitor are connected with the low-tension supply of the intelligent power module, the second end of the capacitor with The end RCIN of the comprehensive protection module is connected.

10. intelligent power module as claimed in claim 9, which is characterized in that the first decision submodule includes:

First nor gate, the first input end of first nor gate are connected with first overcurrent protection module, and described first The second end of nor gate is connected with second overcurrent protection module；

First NOT gate, the input terminal of first NOT gate are connected with first overcurrent protection module；

First switch tube, the control terminal of the first switch tube are connected with the output end of first NOT gate, the first switch The first end of pipe is connected with the end RCIN, the second end ground connection of the first switch tube；

Second switch, the control terminal of the second switch are connected with the second decision submodule, the second switch First end be connected with the enable end of the protection decision-making module, the second end of the second switch is grounded；

First trigger, the input terminal of first trigger are connected with the end RCIN；

Second trigger, the first input end of second trigger are connected with first nor gate, second trigger The second input terminal be connected with the output end of first trigger, the output end of second trigger output described first is determined Plan signal.

11. intelligent power module as claimed in claim 10, which is characterized in that first trigger is schmidt trigger Device, second trigger are rest-set flip-flop.

12. intelligent power module as claimed in claim 10, which is characterized in that the second decision submodule includes:

Second nor gate, the first input end of second nor gate are connected with first decision signal, and described second or non- Second input terminal of door is connected with the under-voltage protective module；

Third nor gate, the first input end of the third nor gate are connected with the output end of second nor gate, and described Second input terminal of three nor gates is connected with the overheat protector module, and the output end of the third nor gate is opened with described second The input terminal for closing pipe is connected；

Four nor gate, the first input end of the four nor gate are connected with the output end of the third nor gate, and described Second input terminal of four nor gate is connected with the enable end；

The input terminal of second NOT gate, second NOT gate is connected with the output end of the four nor gate, and second NOT gate is defeated The decision signal out.

13. a kind of electric appliance, which is characterized in that including such as described in any item intelligent power module of claim 1-12.