CN208794656U

CN208794656U - Electrically-controlled component and air conditioner

Info

Publication number: CN208794656U
Application number: CN201821327205.0U
Authority: CN
Inventors: 麦智炜
Original assignee: Midea Group Co Ltd; Guangzhou Hualing Refrigeration Equipment Co Ltd
Current assignee: Midea Group Co Ltd; Guangzhou Hualing Refrigeration Equipment Co Ltd
Priority date: 2018-08-16
Filing date: 2018-08-16
Publication date: 2019-04-26
Anticipated expiration: 2028-08-16

Abstract

The utility model discloses a kind of electrically-controlled component and air conditioner, the electrically-controlled component includes: master control borad, is provided with power input, the first master controller, isolating switch power, power supply, power module, current limiting element and the first electronic switch for accessing AC power source；First electronic switch is arranged in series between power input and the input terminal of power module；First control terminal of the first master controller is connect with the controlled end of the first electronic switch, and the second control terminal of the first master controller and the controlled end of power module connect；The input terminal of power supply is connect with current limiting element, and the output end of power supply is connect with the power end of the first master controller；Display board is provided with the second master controller, and the input terminal of isolating switch power is connect with power input, and the output end of isolating switch power is electrically connected with the power end of the second master controller, the second master controller and the first master controller communication connection.The utility model has adapted to the compact-sized design of integral air conditioner.

Description

Electric control assembly and air conditioner

Technical Field

The utility model relates to an automatically controlled technical field, in particular to automatically controlled subassembly and air conditioner.

Background

With the technological progress, people have higher and higher requirements on air conditioners, do not pay more attention to whether the air conditioners can be used for cooling and heating, pay more attention to whether the air conditioners can save energy and reduce consumption and have compact structures, and the traditional alternating current driving scheme, namely constant frequency driving, cannot meet customers, so that air conditioner integration and frequency conversion become more and more choices of users.

However, the electronic control schemes of the integrated inverter air conditioner are all mature inverter electronic control schemes directly transplanted to the split inverter air conditioner to reduce the development period and the development difficulty, but the split inverter air conditioner has three circuit boards, namely a display board, an inner unit electronic control board and an outer unit inverter board, and cannot adapt to the design of the integrated air conditioner with compact structure, namely, cannot simultaneously accommodate the three circuit boards in the integrated air conditioner.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing an automatically controlled subassembly and air conditioner, aim at with master control function and frequency conversion function integration on the main control board to adapt to integral type air conditioner compact structure's design.

In order to achieve the above object, the utility model provides an automatically controlled subassembly, automatically controlled subassembly includes:

the power supply control system comprises a main control board, a first power supply, a first main controller, an isolating switch power supply, a power module, a current limiting element and a first electronic switch, wherein the main control board is provided with a power supply input end for accessing an alternating current power supply, the first main controller, the isolating switch power supply, the power module, the current limiting element and the;

the first electronic switch is arranged between the input end of a power supply and the input end of the power module in series; the first control end of the first main controller is connected with the controlled end of the first electronic switch, and the second control end of the first main controller is connected with the controlled end of the power module; the current limiting element is connected with the first electronic switch in parallel; the input end of the power supply is connected with the output end of the first electronic switch of the current limiting element respectively, and the output end of the power supply is connected with the power end of the first main controller;

the display panel is provided with a second main controller, the input end of the isolating switch power supply is connected with the power supply input end, the output end of the isolating switch power supply is electrically connected with the power supply end of the second main controller, and the second main controller is in communication connection with the first main controller; wherein,

and the second main controller is used for communicating with the first main controller when receiving a starting-up control signal so as to control the first electronic switch to be closed.

Optionally, the first electronic switch is a first relay, and a first end of the first relay coil is connected to a ground terminal of the power supply; the second end of the first relay coil is the controlled end of the first electronic switch, the static contact of the first relay is connected with the power supply input end, and the movable contact of the first relay is connected with the input end of the power module.

Optionally, the main control panel is further provided with an isolated power output terminal, a ground terminal and two first signal transmission terminals, and the display panel is provided with an isolated power input terminal, a ground terminal, a switch signal output terminal and two second signal transmission terminals, which are connected with the isolated power output terminal, the ground terminal and the two first signal transmission terminals in a one-to-one correspondence manner.

Optionally, the control panel is provided with a first plug, the display panel is provided with a second plug, the isolated power supply output end, the grounding end, the switch signal input end and the two first signal transmission ends are arranged in the first plug, and the isolated power supply input end, the grounding end, the switch signal output end and the two second signal transmission ends are arranged in the second plug;

the first plug connector and the second plug connector are mutually plugged and matched, or are electrically connected through a connector.

Optionally, the power supply is a non-isolated switching power supply, an input end of the non-isolated switching power supply is an input end of the power supply, and an output end of the non-isolated switching power supply is an output end of the power supply;

the non-isolation switch power supply is used for converting the power supply voltage into direct current voltage to supply power to the first main controller.

Optionally, the main control board is further provided with a plurality of second relays for driving a load to work, a plurality of first ends of the second relay coils are respectively connected with the output end of the non-isolated switch power supply, and a plurality of second ends of the second relay coils are connected with a plurality of second control ends of the first main controller in a one-to-one correspondence manner.

Optionally, the power module includes a PFC circuit and an IPM module, the controlled terminals of the PFC circuit and the IPM module are respectively connected to the first main controller, the input terminal of the PFC circuit is the input terminal of the power module, the output terminal of the PFC circuit is connected to the input of the IPM module, and the output terminal of the IPM module is used for accessing the compressor motor.

Optionally, an isolation communication circuit for realizing communication isolation between the second main controller and the first main controller is further arranged on the main control board, and the isolation communication circuit is serially connected between the second main controller and the first main controller.

Optionally, a wireless communication circuit for realizing communication connection between the second main controller and an external communication device is further disposed on the display panel.

The utility model also provides an air conditioner, which comprises the electric control component; the power supply control system comprises a main control board, a first power supply, a first main controller, an isolating switch power supply, a power module, a current limiting element and a first electronic switch, wherein the main control board is provided with a power supply input end for accessing an alternating current power supply, the first main controller, the isolating switch power supply, the power module, the current limiting element and the;

the first electronic switch is arranged between the input end of a power supply and the input end of the power module in series; the first control end of the first main controller is connected with the controlled end of the first electronic switch, and the second control end of the first main controller is connected with the controlled end of the power module; the current limiting element is connected with the first electronic switch in parallel; the input end of the power supply is connected with the current limiting element, and the output end of the power supply is connected with the power supply end of the first main controller;

The utility model discloses automatically controlled subassembly is provided with main control board and display panel, and with first main control unit, the isolator power, power supply, power module, current-limiting element and the integrated setting of first electronic switch are on the main control board, and set up second main control unit on the display panel, second main control unit is when receiving start control instruction, be connected with first main control unit communication, in order after last electric delay, first main control unit control first electronic switch is closed, thereby the control power input inserts alternating current power supply, and for power module and other circuit module power supplies on the main control board. And meanwhile, receiving a control instruction input from the outside, decoding and analyzing the received control instruction to convert the control instruction into a corresponding control signal, and communicating and connecting the control instruction with the first main controller, so that the control signal is output to the first main controller, the first main controller drives the power module to work according to the received control signal, the power supply frequency of the compressor is adjusted, and the rotation speed adjustment of the variable frequency compressor is realized. The utility model discloses integrate master control function and frequency conversion function on the main control board to adapt to integral type air conditioner compact structure's design.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.

Fig. 1 is a schematic diagram of functional modules of an embodiment of the electronic control assembly of the present invention;

fig. 2 is a schematic diagram of a circuit structure according to an embodiment of the electronic control assembly of the present invention.

The reference numbers illustrate:

reference numerals	Name (R)	Reference numerals	Name (R)
				100	Main control board	200	Display panel
110	A first main controller	210	Second main controller
				120	Isolating switch power supply	220	Voltage conversion circuit
130	Power supply	230	Display module
				140	Power module	240	Key circuit
150	First electronic switch	250	Wireless communication circuit
				160	Second relay	260	Stepping motor
170	Isolated communication circuit	270	Temperature acquisition circuit
				180	EMI filter circuit	VCC	Isolated power supply output terminal
141	PFC circuit	TXD	Signal transmitting terminal
				142	IPM module	RXD	Signal receiving terminal
AC-in	Power input terminal	GND	Grounding terminal
				R1	Current limiting element

The objects, features and advantages of the present invention will be further described with reference to the accompanying drawings.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

It should be noted that, if directional indications (such as upper, lower, left, right, front and rear … …) are involved in the embodiment of the present invention, the directional indications are only used to explain the relative position relationship between the components, the motion situation, etc. in a specific posture (as shown in the drawings), and if the specific posture is changed, the directional indications are changed accordingly.

In addition, if there is a description relating to "first", "second", etc. in the embodiments of the present invention, the description of "first", "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, the technical solutions in the embodiments may be combined with each other, but it must be based on the realization of those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should not be considered to exist, and is not within the protection scope of the present invention.

The utility model provides an automatically controlled subassembly is applicable to among integral type air conditioners such as portable air conditioner, window formula air conditioner, dehumidifier humidification machine.

Referring to fig. 1 and 2, in an embodiment of the present invention, the electronic control assembly includes:

the main control panel 100 is provided with a power input end AC-in for accessing an alternating current power supply, a first main controller 110, an isolating switch power supply 120, a power supply 130, a power module 140, a current limiting element R1 and a first electronic switch 150;

the first electronic switch 150 is arranged in series between the power input terminal AC-in and the input terminal of the power module 140; a first control terminal of the first main controller 110 is connected to the controlled terminal of the first electronic switch 150, and a second control terminal of the first main controller 110 is connected to the controlled terminal of the power module 140; the current limiting element R1 is arranged in parallel with the first electronic switch 150; the input end of the power supply 130 is connected to the current limiting element R1 and the first electronic switch 150, respectively, and the output end of the power supply 130 is connected to the power end of the first main controller 110;

a display panel 200, wherein a second main controller 210 is disposed on the display panel 200, an input terminal of the isolated switching power supply 120 is connected to the power input terminal AC-in, an output terminal of the isolated switching power supply 120 is electrically connected to a power terminal of the second main controller 210, and the second main controller 210 is in communication connection with the first main controller 110; wherein,

the second master controller 210 is configured to communicate with the first master controller 110 when receiving a power-on control signal, so as to control the first electronic switch 150 to be turned on.

In this embodiment, the isolation switch power supply 120 may be implemented by using an isolation transformer, a switching tube, a PWM controller, a rectification filter circuit, and other components, so as to convert an AC power supply, for example, 220V commercial power, connected to the power input end AC-in into a dc power, and output the dc power to the second main controller 210, so as to provide a working voltage for the second main controller 210. The operating voltage of the second master controller 210 may be 10-18V, and in this embodiment, may be 12V. The current limiting element R1 may be implemented by using an element having a current limiting characteristic, such as an inductor or a resistor, and the present embodiment may optionally use a resistor.

The first main controller 110 and the second main controller 210 may be microprocessors such as a single chip, a DSP, and an FPGA, and those skilled in the art can integrate some hardware circuits and software programs or algorithms in the first main controller 110 and the second main controller 210 to realize communication between the two, and the first main controller 110 and the second main controller 210 may further integrate a software algorithm program for analyzing and comparing received control instruction numbers, and a decoder and other algorithm programs for analyzing control instructions. The received control instructions are compared, analyzed, etc. by running or executing software programs and/or modules stored in the memory of the main controller and calling data stored in the memory. For example, when the second master controller 210 receives a power-on command, the second master controller 210 outputs a switch control signal to the first electronic switch 150 to trigger the first electronic switch 150 to close, so as to supply power to the power module 140 and the power supply 130. Or when the second master controller 210 receives the shutdown instruction, the second master controller 210 outputs a switch control signal to the first electronic switch 150 to trigger the first electronic switch 150 to turn off, so as to stop supplying power to the power module 140 and the power supply 130.

It can be understood that the main control board 100 is further provided with a current detection circuit, a voltage detection circuit, and a signal detection circuit such as a temperature detection circuit at a position corresponding to each structural component of the air conditioner. The first main controller 110 may also receive an indoor signal, such as an indoor temperature, a temperature of a heat exchanger, a temperature of a compressor, a fan speed, a compressor current, etc., and control the operation of the power module 140 according to the indoor signal.

The power module 140 operates according to the logic instruction output by the first main controller 110, and performs power conversion on the accessed ac power supply to adjust the power supply frequency of the compressor, thereby realizing the speed adjustment of the inverter compressor.

When the air conditioner is powered on, the isolation switch power supply 120 converts the ac power accessed through the ac input terminal into dc power and outputs the dc power to the power supply terminal of the second main controller 210, so as to supply power to the second main controller 210. The current limiting element R1 can suppress the current surge at the moment of power-up to prevent the current surge from being too large to damage the subsequent circuit, such as the power module 140 or the power supply 130. The first main controller 110 further integrates a counter therein, and by adjusting the timing time of the counter, after the air conditioner is powered on for a certain time, for example, 10s or 20s, the first main controller 110 controls the first electronic switch 150 to be closed, so as to control the power input terminal AC-in to access the AC power supply and supply power to other circuit modules on the main control board 100.

The second main controller 210 is in communication connection with the first main controller 110, and the second main controller 210 can receive an externally input control command, such as a cooling, heating, dehumidifying, temperature, wind speed, and the like, decode and analyze the received control command, convert the decoded control command into a corresponding control signal, and output the control signal to the first main controller 110, so that the first main controller 110 drives the power module 140 and other circuit modules and loads on the main control board 100 to operate according to the received control signal, thereby implementing the cooling, heating, dehumidifying, and other functions of the air conditioner. The power module 140 converts the input electric energy into energy with corresponding frequency and outputs the energy to the inverter compressor to drive the inverter compressor to work.

The utility model discloses automatically controlled subassembly is provided with main control panel 100 and display panel 200, and with first main control unit 110, isolator power 120, power supply 130, power module 140, current limiting element R1 and the integrated setting of first electronic switch 150 are on main control panel 100, and set up second main control unit 210 on display panel 200, second main control unit 210 is when receiving start control instruction, be connected with first main control unit 110 communication, in order after last electric delay, first main control unit 110 controls first electronic switch 150 and is closed, thereby control power input end AC-in inserts alternating current power supply, and for power module 140 and other circuit module power supplies on main control panel 100. Meanwhile, the control command input from the outside is received, and the received control command is decoded and analyzed to be converted into a corresponding control signal, and is in communication connection with the first main controller 110, so that the control signal is output to the first main controller 110, the first main controller 110 drives the power module 140 to work according to the received control signal, the power supply frequency of the compressor is adjusted, and the rotation speed adjustment of the inverter compressor is realized. The utility model discloses integrate master control function and frequency conversion function on main control board 100 to adapt to integral type air conditioner compact structure's design.

Referring to fig. 1 and 2, in an alternative embodiment, the first electronic switch 150 is a first relay, and a first end of a coil of the first relay is connected to a ground terminal GND of the power supply 130; the second end of the first relay coil is the controlled end of the first electronic switch 150, the stationary contact of the first relay is connected with the power input end AC-in, and the moving contact of the first relay is connected with the input end of the power module 140.

In this embodiment, the first electronic switch 150 may be implemented by a relay, a contactor, or a circuit breaker, and this embodiment may be implemented by a relay, it can be understood that, when the second main controller 210 is implemented by a controller such as a single chip microcomputer, and the first electronic switch 150 is implemented by a relay, the operating voltage of the second main controller 210 is generally 3.3V or 5V, and the driving voltage of the relay is generally 12V, in order to drive the relay to work, the main control board 100 is further provided with a relay driving circuit, for example, a triode circuit, and the relay driving circuit is serially connected between the second main controller 210 and the relay, so that the second main controller 210 controls the relay driving circuit to drive the relay to act. In this embodiment, one end of the coil of the first relay is grounded to the isolation switch module, and the other end is connected to the second main controller 210 through the relay driving circuit, and is turned on/off when receiving the control signal of the second main controller 210, so that when the first relay is turned on, the power input terminal AC-in is controlled to output the AC power to the power module 140, the power supply 130, and other circuit modules on the main control board 100, or when the second relay 160 is turned on, the power supply to the main control board 100 is stopped.

Referring to fig. 1 and 2, in a preferred embodiment, the main control board 100 is further provided with an isolated power output terminal VCC, a ground terminal GND and two first signal transmission terminals, and the display board 200 is provided with an isolated power input terminal AC-in, a ground terminal GND, a switch signal output terminal and two second signal transmission terminals, which are connected to the isolated power output terminal VCC, the ground terminal GND, the switch signal input terminal CTLCTL and the two first signal transmission terminals in a one-to-one correspondence.

Further, the control board is provided with a first plug, the display panel 200 is provided with a second plug, the isolated power supply output terminal VCC, the ground terminal GND and the two first signal transmission terminals are arranged in the first plug, and the isolated power supply input terminal AC-in, the ground terminal GND, the switch signal output terminal and the two second signal transmission terminals (the signal transmitting terminal TXD and the signal receiving terminal RXD) are arranged in the second plug;

It can be understood that, in the practical application process, the terminals on the main control board 100 and the display panel 200 are implemented by using plug connectors, or implemented by using connectors, such as cables or quad cables, to implement the detachable connection between the display panel 200 and the main control board 100, so that the arrangement is favorable for correspondingly installing the display panel 200 and the main control board 100 in the installation area corresponding to the air conditioner.

Referring to fig. 1 and 2, in a preferred embodiment, the power supply 130 is a non-isolated switching power supply 120, an input terminal of the non-isolated switching power supply 120 is an input terminal of the power supply 130, and an output terminal of the non-isolated switching power supply 120 is an output terminal of the power supply 130;

the non-isolated switching power supply 120 is configured to convert the voltage of the power supply 130 into a dc voltage to supply power to the first main controller 110.

In this embodiment, the non-isolated switching power supply 120 may be implemented by using components such as an EMI filter capacitor, a filter inductor, a rectifier bridge, a voltage reduction chip, an output inductor, and an output capacitor, so as to convert the accessed ac power, for example, 220V commercial power, into the power supply 130 of the first main controller 110 and other circuit modules after rectification filtering and voltage reduction processing, where the power supply 130 may be 5V, 12V, or 24V in this embodiment.

Referring to fig. 1 and 2, in a preferred embodiment, a plurality of second relays 160 for driving a load to operate are further disposed on the main control board 100, first ends of coils of the plurality of second relays 160 are respectively connected to the output end of the non-isolated switching power supply 120, and second ends of coils of the plurality of second relays 160 are connected to a plurality of second control ends of the first main controller 110 in a one-to-one correspondence manner.

In this embodiment, the fixed contact and the movable contact of the second relay 160 are serially connected between the power input terminal AC-in and the power load, the number of the second relays 160 may be one or multiple, and may be specifically set according to the function implemented by the air conditioner, in this embodiment, four relays are selected, and the four relays are respectively marked as relay 1, relay 2, relay 3, and relay 4. It can be understood that a relay driving circuit is further disposed between the first main controller 110 and the second relay 160 in series, and the relay driving circuit performs isolation and amplification processing on the control signal output by the first main controller 110, and then outputs the control signal to the second relay 160 to control the second relay 160 to be turned on/off, so as to drive a corresponding load, such as a fan, a four-way valve, an electric heating module, or a negative ion purification module.

Referring to fig. 1 and 2, in a preferred embodiment, the power module 140 includes a PFC circuit 141 and an IPM module 142, the controlled terminals of the PFC circuit 141 and the IPM module 142 are respectively connected to the first main controller 110, the input terminal of the PFC circuit 141 is the input terminal of the power module 140, the output terminal of the PFC circuit 141 is connected to the input terminal of the IPM module 142, and the output terminal of the IPM module 142 is used for connecting to a compressor motor.

In this embodiment, the power module 140 further includes a rectifier bridge for converting the input ac power into dc power and outputting the dc power. The PFC circuit 141 may employ other components such as a PFC switch, a diode, an energy storage capacitor, and an inductor to implement power factor correction of the dc power supply. In this embodiment, the IPM module 142 integrates a plurality of power switching tubes, and the plurality of power switching tubes form a driving inverter bridge circuit, for example, six power switching tubes form a three-phase inverter bridge circuit, or four power switching tubes form a two-phase inverter bridge circuit. Each power switch tube can be realized by adopting an MOS tube or an IGBT. The plurality of power switch tubes are connected to the power inverter bridge circuit, the PFC circuit 141 and the IPM module 142 are respectively connected to the first main controller 110, so that when the PFC circuit 141 receives a control signal output by the first main controller 110, the power factor of an input power is corrected, and then the IPM module 142 is output, and when the IPM module 142 receives a logic control signal output by the first main controller 110, the corresponding power is output to the compressor, so as to adjust the frequency of the compressor, thereby implementing the variable frequency control of the compressor.

Referring to fig. 1 and 2, in a preferred embodiment, an isolation communication circuit 170 for implementing communication isolation between the second main controller 210 and the first main controller 110 is further disposed on the main control board 100, and the isolation communication circuit 170 is disposed in series between the second main controller 210 and the first main controller 110.

It should be noted that, most of the display panels 200 and the main control panel 100 need to be electrically connected through a connection line, data signals between the first main controller 110 and the second main controller 210 need to be serially transmitted in a long distance, and the interference on the line is very large, the communication isolation circuit of this embodiment may be implemented by using an optical coupler, a diode and other unidirectional conducting elements, so as to suppress the common mode interference on the line, thereby avoiding the mutual series interference between the first main controller 110 and the second main controller 210, in addition, the power supplies 130 of the first main controller 110 and the second main controller 210 may not be consistent, and it may be ensured that the first main controller 110 and the second main controller 210 are not burned when the power supplies are not matched through the communication isolation circuit.

Referring to fig. 1 and 2, in a preferred embodiment, the main control board 100 is further provided with an EMI filter circuit 180, and the EMI filter circuit is serially connected between the power input terminal AC-in and the first electronic switch 150. The EMI filter circuit 180 may be implemented by using an inductive element and a capacitive element to filter out electromagnetic interference generated on the power line.

Referring to fig. 1 and 2, in a preferred embodiment, a voltage converting circuit 220 is further disposed on the display panel 200, and the voltage converting circuit 220 is disposed in series between the isolation switch power supply 120 and the power input terminal AC-in of the second main controller 210;

the voltage conversion circuit 220 is configured to perform voltage conversion on the direct current output by the disconnecting switch power supply 120 and output the direct current to the second main controller 210, so as to supply power to the second main controller 210.

In this embodiment, the voltage conversion circuit 220 may adopt a filter capacitor and a three-terminal regulator chip, such as 7805, to implement that the dc power output by the isolation switch power supply 120 is stepped down and then output to the second main controller 210 and other circuit modules on the display panel 200, so as to provide a working voltage for the second main controller 210, for example, the dc power of 12V or 15V may be converted into dc power of 5V or 3.3V and then output to the power supply terminal of the second main controller 210.

Referring to fig. 1 and 2, in an alternative embodiment, the display panel 200 is further provided with a display module 230 and a key circuit 240, an input end of the display module 230 is connected to a control end of the second main controller 210, and an output end of the key circuit 240 is connected to an input end of the second main controller 210.

It is understood that the display panel 200 may be installed on a panel of the air conditioner, and the display module 230 may be implemented by using an LCD display screen or an LED display screen, and based on the control of the second main controller 210, displays the operating parameters of the air conditioner, such as temperature, wind speed, etc. The key circuit 240 may be configured to receive key signals triggered by a user, such as a power-on key, a key, and a wind speed adjustment, and convert the key signals into voltage signals and output the voltage signals to the second main controller 210, so that the second main controller 210 outputs corresponding voltage signals, that is, control signals to the first main controller 110 to drive the power module 140 and the corresponding second relay 160 to operate.

Referring to fig. 1 and 2, in an alternative embodiment, the display panel 200 is further provided with a wireless communication circuit 250 for implementing communication connection between the second main controller 210 and an external communication device.

In this embodiment, the wireless communication circuit 250 may be implemented by a WIFI module, an infrared receiving module or a bluetooth module to receive a control instruction output by a user based on a mobile terminal such as a remote control or a mobile phone, and output the received control instruction to the second main controller 210, so that the second main controller 210 outputs the corresponding voltage signal, that is, a control signal to the first main controller 110, thereby driving the power module 140 and the corresponding second relay 160 to operate.

Referring to fig. 1 and 2, in an alternative embodiment, the display panel 200 is further provided with a step motor 260, and a controlled end of the step motor 260 is connected to the second main controller 210.

In this embodiment, the stepping motor 260 may be configured to drive a panel, a swing blade, and other loads of the air conditioner to work, and a driving circuit is further disposed between the stepping motor 260 and the second main controller 210, and when receiving a control signal of the second main controller 210, the driving circuit drives the stepping motor 260 to work, so that the stepping motor 260 drives the panel and the swing blade to move, and the air outlet of the panel or the swing blade swings air.

Referring to fig. 1 and 2, in an alternative embodiment, the display panel 200 is further provided with a temperature acquisition circuit 270, and an output end of the temperature acquisition circuit 270 is connected to the second main controller 210.

In this embodiment, the temperature acquisition circuit 270 may be configured to acquire an indoor temperature or a temperature of the air outlet, convert the acquired temperature into a corresponding voltage signal, and output the voltage signal to the second main controller 210, so that the second main controller 210 outputs the corresponding voltage signal to the first main controller 110 to drive the power module 140 and the corresponding second relay 160 to operate.

The utility model discloses still provide an air conditioner, the air conditioner includes as above automatically controlled subassembly. The detailed structure of the electronic control assembly can refer to the above embodiments, and is not described herein again; it can be understood that, because the utility model discloses above-mentioned automatically controlled subassembly has been used in the air conditioner, consequently, the utility model discloses the embodiment of air conditioner includes all technical scheme of the whole embodiments of above-mentioned automatically controlled subassembly, and the technological effect that reaches is also identical, no longer gives unnecessary details here.

The above only be the preferred embodiment of the utility model discloses a not consequently restriction the utility model discloses a patent range, all are in the utility model discloses a conceive, utilize the equivalent structure transform of what the content was done in the description and the attached drawing, or direct/indirect application all is included in other relevant technical field the utility model discloses a patent protection within range.

Claims

1. An electronic control assembly, comprising:

the first electronic switch is arranged between the input end of a power supply and the input end of the power module in series; the first control end of the first main controller is connected with the controlled end of the first electronic switch, and the second control end of the first main controller is connected with the controlled end of the power module; the current limiting element is connected with the first electronic switch in parallel; the input end of the power supply is respectively connected with the output end of the first electronic switch of the current limiting element, and the output end of the power supply is connected with the power supply end of the first main controller;

2. The electrical control assembly of claim 1, wherein the first electrical switch is a first relay, a first end of the first relay coil being connected to a ground terminal of the power supply; the second end of the first relay coil is the controlled end of the first electronic switch, the static contact of the first relay is connected with the power supply input end, and the movable contact of the first relay is connected with the input end of the power module.

3. The electrical control assembly according to claim 1, wherein the main control board further has an isolated power output terminal, a ground terminal and two first signal transmission terminals, and the display board has an isolated power input terminal, a ground terminal, a switch signal output terminal and two second signal transmission terminals connected to the isolated power output terminal, the ground terminal and the two first signal transmission terminals in a one-to-one correspondence.

4. The electrical control assembly according to claim 3, wherein the main control board is provided with a first connector, the display board is provided with a second connector, the isolated power supply output terminal, the ground terminal, the switch signal input terminal and the two first signal transmission terminals are arranged in the first connector, and the isolated power supply input terminal, the ground terminal, the switch signal output terminal and the two second signal transmission terminals are arranged in the second connector;

5. The electrical control assembly of claim 1, wherein the power supply is a non-isolated switching power supply, an input of the non-isolated switching power supply is an input of the power supply, and an output of the non-isolated switching power supply is an output of the power supply;

6. The electrical control assembly according to claim 5, wherein a plurality of second relays for driving a load to operate are further disposed on the main control board, first ends of a plurality of second relay coils are respectively connected to the output ends of the non-isolated switching power supply, and second ends of the plurality of second relay coils are connected to the plurality of second control ends of the first main controller in a one-to-one correspondence manner.

7. The electrical control assembly of claim 1, wherein the power module comprises a PFC circuit and an IPM module, the controlled terminals of the PFC circuit and the IPM module are respectively connected to the first main controller, the input terminal of the PFC circuit is the input terminal of the power module, the output terminal of the PFC circuit is connected to the input terminal of the IPM module, and the output terminal of the IPM module is used for connecting to a compressor motor.

8. The electrical control assembly according to claim 1, wherein an isolation communication circuit is further disposed on the main control board for achieving communication isolation between the second main controller and the first main controller, and the isolation communication circuit is disposed in series between the second main controller and the first main controller.

9. An electronic control assembly according to any one of claims 1 to 8, wherein the display panel is further provided with a wireless communication circuit for enabling the second main controller to be in communication with an external communication device.

10. An air conditioner characterized by comprising an electric control assembly as claimed in any one of claims 1 to 9.