KR102071248B1 - Heat exchange system, air conditioning control system, and control method of air conditioning system - Google Patents

Abstract

A heat exchange system, an air conditioning control system, and an air conditioner system control method are provided. Each control part of the heat exchange system adjusts the opening degree of the electronic expansion valve, controls the electronic expansion valve before powering down, stores the initialization state and position information, and at the next power-up, the electronic expansion valve first performs initial state switching. Thereby reducing the risk of the electronic expansion valve not being harmonized and saving system startup time.

Description

Heat exchange system, air conditioning control system, and control method of air conditioning system

This application claims priority to Chinese Patent Application No. 201710234924.1, filed with the Chinese Patent Office on April 11, 2017, under the name "heat exchange system, air conditioner control system and method for controlling the air conditioner system". All of which are hereby incorporated by reference. This application claims priority to the Chinese Patent Application No. 201610169988.3 filed with the Chinese Patent Office on March 23, 2016 under the name of "air conditioner system, its control system and control method." Included by reference.

The present disclosure relates to an air conditioner system, and more particularly, to a method of controlling a heat exchange system, an air conditioner control system and an air conditioner system.

In a conventional vehicle system, a vehicle air conditioner is one of the main devices for consuming energy. As the demand for energy saving of the entire vehicle increases, the energy saving of the vehicle air conditioner is gradually attracting attention. In a vehicle air conditioner system, the refrigerant flow of the system is efficiently controlled to help the system conserve energy by the air conditioner system by achieving optimum performance. For example, in an air conditioner system of an electric vehicle, the compressor is controlled at variable speeds, a wide range of operating conditions, and the opening degree is precisely controlled by an electronic expansion valve to meet the requirements of the compressor's flow change. However, the electronic expansion valve of the air conditioner system as an execution element needs to precisely adjust the opening degree under reasonable control logic so that the heat exchange system of the air conditioner operates reliably with optimum performance. If the opening adjustment of the electromagnetic expansion valve is out of step, the adjustment of the air conditioner system is uncontrolled. At present, the control process of the electronic expansion valve generally includes the steps of starting, operating control and closing, etc., based on the overall operating process of the vehicle air conditioner system. Since the regulating performance during the operation control phase directly affects the energy consumption of the air conditioner, how to improve the opening regulation performance of the electromagnetic expansion valve is now a technological development trend in the air conditioner system field.

In order to solve the above technical problem, according to the disclosure of the present invention, a heat exchange system, an air conditioner control system and an air conditioner system, which can reduce the risk of mismatching the electronic expansion valve and save the start time of the system. A control method is provided.

In order to achieve the above object, according to the present disclosure, a technical solution of the following air conditioner system is provided. compressor; A first heat exchanger; At least one evaporator; And at least one electronic expansion valve, wherein the first heat exchanger is disposed in a pipeline between the outlet of the compressor and the outlet of the electromagnetic expansion valve, the outlet of the evaporator and the inlet of the compressor Communicated with the control unit, wherein the control unit of the heat exchange system is configured to control the opening degree of the electromagnetic expansion valve; The control unit of the heat exchange system is configured to store initialization state information of the electronic expansion valve, the initialization state information includes at least an initialization completion state, and the electronic expansion valve is configured to reset an initialization state based on the initialization state information. Switching to the initialization complete state, and the degree of opening of the electromagnetic expansion valve is then adjusted; And / or the control unit of the heat exchange system is configured to use the position information of the electromagnetic expansion valve as initial position information of the electromagnetic expansion valve, based on the position information of the electromagnetic expansion valve stored by the control unit; And the electromagnetic expansion valve is adjusted to be in the initialization complete state based on the initial positional information, and then the opening degree of the electromagnetic expansion valve is adjusted.

Optionally, said at least one evaporator comprises a first evaporator and a second evaporator, said at least one electromagnetic expansion valve comprising a first electromagnetic expansion valve and a second electromagnetic expansion valve; The heat exchange system further comprises a second heat exchanger, the second heat exchanger comprising a first heat exchange portion and a second heat exchange portion, wherein the first heat exchange portion and the second heat exchange portion are configured to heat exchange with each other; The first heat exchange portion is disposed in a pipeline between the outlet of the first heat exchanger and at least one of the inlet of the first electromagnetic expansion valve and the inlet of the second electromagnetic expansion valve, wherein the second heat exchange portion is the compressor A pipeline is disposed between the inlet of and at least one of the outlet of the first evaporator and the outlet of the second evaporator; In the heat exchange system, the first evaporator and the second evaporator are arranged in parallel, the first electromagnetic expansion valve and the first evaporator are arranged in series, and the second electronic expansion valve and the second evaporator are in series Is placed.

According to the present disclosure, another technical solution of the following air conditioner system is provided. A heat exchange system is provided that includes a compressor, a first heat exchanger, a second heat exchanger, a first evaporator, a second evaporator, a first electromagnetic expansion valve, and a second electromagnetic expansion valve, wherein the first heat exchanger includes an outlet of the compressor and a first heat exchanger. A pipeline is provided between the first electronic expansion valve and the inlet of the second electronic expansion valve; The second heat exchanger includes a first heat exchange portion and a second heat exchange portion, and the first heat exchange portion and the second heat exchange portion may heat exchange with each other; The first heat exchange portion of the second heat exchanger is arranged in a pipeline between the outlet of the first heat exchanger and the inlet of the first electromagnetic expansion valve and the second electromagnetic expansion valve, and the second heat exchange portion of the second heat exchanger is Is arranged in the pipeline between the inlet and the outlet of the evaporator and the second evaporator; The first evaporator and the second evaporator are arranged in parallel, the first electronic expansion valve and the first evaporator are arranged in series, and the second electronic expansion valve and the second evaporator are arranged in series; The air conditioner system is capable of adjusting the opening degree of the first electromagnetic expansion valve and the second electromagnetic expansion valve; After powered up and before adjustment of the opening degree, the first electromagnetic expansion valve and the second electromagnetic expansion valve complete the initialization switching based on the initialization state information and the original position information stored by the air conditioner system; The first electromagnetic expansion valve and the second electromagnetic expansion valve adjust their states to the initialized state, and the first electromagnetic expansion valve and the second electromagnetic expansion valve obtain corresponding initial position information.

Optionally in any of the heat exchange systems described above, the control unit of the heat exchange system comprises: an air conditioner controller; And an electrical control unit of the electromagnetic expansion valve configured to control and operate the mechanical portion of the electromagnetic expansion valve, wherein the air conditioner controller or the electrical control unit includes an initialization state switching subunit: The initialization state switching subunit is configured to confirm or extract at least the initialization state information of the electromagnetic expansion valve, the electromagnetic expansion valve switching the initialization state to the initialization completion state based on the initialization state information; And / or the initialization state switching subunit is configured to use the position information of the electromagnetic expansion valve as the initial position information of the electromagnetic expansion valve, wherein the electromagnetic expansion valve is completed with the initialization based on the initial position information. It is adjusted to be in a state.

Optionally, said heat exchange system is a heating and ventilating air conditioner cooling system, said heat exchange system further comprising a third electromagnetic expansion valve and a cooler; The third electromagnetic expansion valve and the cooler are disposed between an outlet of the first heat exchanger and the inlet of the compressor, and the cooler is disposed in parallel with the first evaporator and the second evaporator.

Optionally, the heat exchange system further comprises a third electromagnetic expansion valve and a cooler, wherein the third electromagnetic expansion valve and the cooler are disposed between the outlet of the first heat exchanger and the inlet of the compressor, A cooler is disposed parallel to the first evaporator and the second evaporator; The third electromagnetic expansion valve and the cooler are arranged in series, and the refrigerant of the branch where the battery cooler is disposed is controlled by adjusting the opening degree of the three electromagnetic expansion valve; The cooler is a cooling element for the heat generating component configured to reduce the temperature of the heat generating component; The third electromagnetic expansion valve switches the initialization state to the initialization complete state based on initialization state information of the third electromagnetic expansion valve stored by the control unit of the heat exchange system, and then the third electromagnetic expansion valve. The opening degree of is controlled; And / or

The initial state switching subunit of the control unit is configured to initialize the position information of the third electromagnetic expansion valve based on the position information of the third electromagnetic expansion valve stored by the control unit of the heat exchange system. Using as position information, the electromagnetic expansion valve is adjusted to be in the initialization complete state based on the initial position information, and then the opening degree of the third electromagnetic expansion valve is adjusted.

Air conditioner controls; And an electric control unit for controlling the operation of the electronic expansion valve, wherein the air conditioner control device is an air conditioner control center and at least one of control signals and input information of the vehicle system or the control panel. Receive and analyze a signal and transmit the analyzed control signal to the electromagnetic expansion valve, the electromagnetic expansion valve operating based on the control signal; Or the electrical control unit receives and analyzes at least one of the control information and the sensor information transmitted by the air conditioner control device, and the preset control program and the electrical for the electronic expansion valve stored by the electrical control unit. Obtain a control signal by calculating based on at least one of the feedback information stored by the control unit, convert the control signal into an electric quantity that can be executed by the electromagnetic expansion valve, and control the electromagnetic expansion valve by the electric quantity. And the air conditioner controller comprises a storage unit configured to store initial and state information of the electromagnetic expansion valve, wherein the initialization state information includes at least an initialization completion state; Or the electrical control unit comprises a storage unit configured to store initialization state information of the electromagnetic expansion valve; And the electromagnetic expansion valve switches an initialization state to the initialization complete state based on the initialization state information of the electromagnetic expansion valve provided by the storage unit.

Optionally, the storage unit is further configured to store positional information of the electromagnetic expansion valve; An initialization switching signal is obtained based on the positional information and the initialization state information provided by the storage unit, and the electrical control unit is configured to complete the switching of the electronic expansion valve to complete the switching of the initialization state based on the initialization switching signal. To control.

Optionally, said air conditioner control device or said electrical control unit comprises an initialization state switching subunit, said initialization state switching subunit being configured to verify or extract at least initialization state information of said electronic expansion valve. Control the electromagnetic expansion valve to switch a state to the initialization complete state; The initialization state switching subunit is configured to use the stored position information of the electromagnetic expansion valve as initial position information of the electromagnetic expansion valve based on the position information of the electromagnetic expansion valve stored by the storage unit, wherein the electronic expansion The valve acquires the initial position information, and is adjusted to be in the initialization complete state based on the initial position information, and then the opening degree of the electromagnetic expansion valve is adjusted.

Optionally, the storage unit is disposed in a central processing module of the air conditioner control device or the electrical control unit, the storage unit being a non-volatile storage element; When the air conditioner controller starts a program for controlling the electronic expansion valve to be powered down, the air conditioner controller or the storage unit of the electric control unit is identified by an initialization state switching subunit. Store at least position information of the electromagnetic expansion valve and the initialization state information; When the air conditioner controller starts a program for controlling the electromagnetic expansion valve to power up, the initialization state switching subunit is configured to: at least the initialization of the electromagnetic expansion valve based on the information stored by the storage unit. Verify or extract status information; Control the electromagnetic expansion valve to switch the initialization state to the initialization complete state; Configured to set the positional information of the electromagnetic expansion valve stored by the storage unit as initial positional information, wherein the electromagnetic expansion valve is adjusted to be in the initialization complete state based on the initial positional information.

Optionally, an initialization state switching signal includes said initialization state information and location information, and said air conditioner control device provides said initialization state switching signal to said electrical control unit in a local Internet network control mode, and said electrical control. The unit is configured to receive the initialization state switching signal, switch the state of the electromagnetic expansion valve to the initialization complete state, receive the stored position information and set the position information to initial position information of the electromagnetic expansion valve; Or the electric control unit reads the initialization complete state in the stored initialization state information, switches the state of the electromagnetic expansion valve to the initialization complete state, reads the stored position information, and returns the position information of the electronic expansion valve. Configured to set initial position information; Or the air conditioner control device reads the initialization completion state in the stored initialization state information and the stored position information and provides the initialization completion state and the position information to the electric control unit to determine the state of the electronic expansion valve. Switch to the initialization state and set the stored position information to initial position information of the electromagnetic expansion valve.

Optionally, the initialization state switching signal provided by the air conditioner controller to the electromagnetic expansion valve is a LIN signal, the initialization state switching signal comprising at least two LIN data bytes, and the two LIN data bytes. Each contains 8 data bits; Stored position information is represented by all eight bits of the Nth byte and two Low bits (bit 0 and bit 1) of the (N + 1) th byte; The initialization status information is indicated by two high bits (bit 6 and bit 7) of the (N + 1) th byte, where N is 1 or greater than 1; The air conditioner control device is configured to transmit, by the initialization state switching signal, initialization state switching and the stored positional information to the electric control unit of the electromagnetic expansion valve.

Optionally, the air conditioner control device is configured to receive at least one of input information and sensor information of a master control board of the air conditioner system; The electrical control unit is configured to receive and analyze at least one of control information and sensor information transmitted by the air conditioner control device, and the electrical control unit and the preset control program for the electronic expansion valve stored by the electrical control unit. Obtain a control signal by calculating based on at least one of the feedback information stored by the controller, convert the control signal into an amount of electricity that can be executed by the electromagnetic expansion valve, and control the electromagnetic expansion valve by the amount of electricity; The air conditioner controller stores the positional information and initialization state information of the electromagnetic expansion valve by providing the storage unit and provides the stored information to the electrical control unit; The control signal comprises at least an initialization state switching signal; Or the electrical control unit stores the feedback information by providing a storage unit, and the feedback information stores at least the initialization state information and the positional information stored by the storage unit of the electrical control unit to be read by the electrical control unit. Including; Or the air conditioner controller is configured to receive at least one of input information and sensor information of a master control board of an air conditioner system and to store the preset control program and the air for the electronic expansion valve stored by the air conditioner controller. Configured to obtain a control signal by calculating based on at least one of the feedback information stored by the harmonic control device and to transmit the control signal to the electrical control unit; The electric control unit is configured to convert the control signal into an amount of electricity that can be executed by the electromagnetic expansion valve and to control the electromagnetic expansion valve by the amount of electricity; The feedback information stored by the air conditioner control device includes at least the initialization state information and position information.

Optionally, the air conditioner controller is provided with a central processing module; The electric control unit of the electromagnetic expansion valve is provided with a LIN transmission / reception module, a central processing module, a drive control module and a drive module; A bus transmit / receive module is configured to transmit a signal detected on a LIN bus to the central processing module; The central processing module receives and analyzes control information from the master control board of the air conditioner system, transmits the analyzed control signal for the electronic expansion valve to the drive control module and sends the current position information of the electronic expansion valve. Record or store and transmit a feedback signal corresponding to an analysis result to the LIN bus via the bus transceiver module; The storage unit is arranged in an integrated manner in the central processing module of the electrical control unit, the control signal includes an initialization state switching signal, or the storage unit is arranged in the central processing module of the air conditioner control device. Become; Or the air conditioner control device is provided with a central processing module, and the electric control unit is provided with a drive control module and a drive module; The central processing module of the air conditioner control device receives at least one of input information and sensor information and generates a control signal for the electronic expansion valve by calculation and sends the control signal to the drive control module and the Record or store current position information of the electronic expansion valve; The storage unit of the air conditioner control unit is arranged in an integrated manner in the central processing module of the air conditioner control unit; And a stepping drive control module is configured to receive the control signal for controlling the electromagnetic expansion valve transmitted by the air conditioner control device or the central processing module of the electrical control unit and to transmit the control signal to the drive module. Configured; The drive module is configured to provide an electrical signal to the electronic coil in response to the request of the control signal, and the valve needle is controlled to operate by applying an electrical signal on the electronic coil.

Optionally, the air conditioner control system is configured to control an air conditioner system including a heat exchange system.

A control method of an air conditioner system comprising a method of controlling an electronic expansion valve of an air conditioner system, the method of controlling the electronic expansion valve comprises: a program for controlling the electronic expansion valve to power down the air conditioning When the controller starts, by the built-in storage unit of the air conditioner controller or the electrical control unit, to store the initialization completion state and position information of the electronic expansion valve; The electric wave expansion valve is controlled to be powered down after the initialization completion state and the position information of the electromagnetic expansion valve are stored, and the electronic expansion in the power-up step based on the stored initialization state information and the position information of the electromagnetic expansion valve. A control method of an air conditioner system is provided, including a valve completing switching of an initial state.

Optionally, by the built-in initialization state switching subunit of the air conditioner controller or the electrical control unit, when the air conditioner controller starts a program for controlling the electronic expansion valve to be powered up, the storage unit Obtain an initialization state switching signal by calculating based on the initialization state information and the position information of the electromagnetic expansion valve stored by the controller; Control the electromagnetic expansion valve to switch the state of the electromagnetic expansion valve to an initialization complete state; The switching of the initialization state is completed by setting the stored position information to a current initial position.

Optionally, when the air conditioner controller starts a program that controls the electromagnetic expansion valve to power up, the method includes: controlling the electronic expansion valve to power up by the air conditioner controller; Send, by the air conditioner controller, an initialization state switching signal and the stored positional information to the electronic expansion valve in a local internet network control mode; Identify and extract at least the initialization state information and the position information of the electromagnetic expansion valve by an initialization state switching subunit based on the information stored by the storage unit and provide an initialization state switching signal to the electromagnetic expansion valve; Switch states by the electrical control unit of the electromagnetic expansion valve based on the received initialization state switching signal; The switching of the initialization state of the electromagnetic expansion valve is completed by receiving the stored position information by the electric control unit of the electromagnetic expansion valve and setting the position information stored by the storage unit to a current initial position; Or read out the initialization completion state in the initialization state information from the storage unit of the electrical control unit by the initialization state switching subunit, wherein the state of the electromagnetic expansion valve is in the initialization completion state; The switching of the initialization state of the electromagnetic expansion valve is completed by reading the position information by the electric control unit and setting the position information to the current initial position of the electromagnetic expansion valve; Or read out the initialization completion state in the initialization state information from the storage unit of the air conditioner control device by the initialization state switching subunit, wherein the state of the electromagnetic expansion valve is in the initialization completion state; And reading the position by the air conditioner control device and setting the read position to a current initial position to complete switching of the initialization state of the electromagnetic expansion valve.

Optionally, when the air conditioner controller starts a program to cause the electronic expansion valve to power down, the method may include: communicating with the electronic expansion valve in a local internet network control mode by the air conditioner controller; ; Store position information and initialization state information of the electromagnetic expansion valve by the storage unit of the air conditioner control device; Control the electronic expansion valve to power down normally; Or store the position information and the initialization state information of the electronic expansion valve by controlling the storage unit of the electronic expansion valve by the air conditioner control device to transmit a storage command in a local internet network control mode; Transmit a storage completion feedback signal to the air conditioner control device by the electromagnetic expansion valve after the electromagnetic expansion valve stores the information; Control the electronic expansion valve to power down normally; Or store, by the storage unit of the air conditioner control device, the positional information and the initialization state information of the electromagnetic expansion valve; And controlling the electronic expansion valve to power down normally.

Optionally, when the air conditioner controller starts a program to cause the electromagnetic expansion valve to power down, the method may include: by the air conditioner controller or the electrical control unit, initialize an initialization control signal to the electronic expansion. Control the electronic expansion valve to transmit to a valve to perform initialization; After the initialization is completed, controlling the storage unit of the air conditioner control device or the storage unit of the electrical control unit to store state information and position information fed back by the electromagnetic expansion valve.

Optionally, the air conditioner system includes a heat exchange system.

Compared with the prior art, according to the disclosure of the present invention, the initialization state information and the position information are stored before the electromagnetic expansion valve is powered down, and are quickly switched to the initialization complete state after the electromagnetic expansion valve is powered up, thereby, the electronic Reduces risk of incongruity of expansion valves and saves system start-up time.

1 is a partial schematic diagram of an air conditioner system according to an embodiment of the present disclosure;
2 is a system diagram of an air conditioner system according to another embodiment of the present disclosure;
3A shows an electrical control unit of an air conditioner system according to an embodiment of the present disclosure;
3B shows an electrical control unit of an air conditioner system according to another embodiment of the present disclosure;
4 is an electrical control unit of an air conditioner system according to another embodiment of the present disclosure;
FIG. 5 is a schematic diagram of some data segments of the LIN signal switching the initialization state by the electromagnetic expansion valve shown in FIGS. 3 and 3B;
6 is a schematic diagram of a method of controlling the switching of an initialization state in the LIN control mode by the electromagnetic expansion valve shown in FIGS. 3A and 3B;
FIG. 7 is a schematic diagram of a second method of controlling the switching of an initialization state by the electromagnetic expansion valve shown in FIGS. 3A and 3B;
8 is a schematic diagram of a third method of controlling the switching of an initialization state by the electromagnetic expansion valve shown in FIGS. 3A and 3B;
9 is a schematic diagram of a fourth method of controlling the switching of an initialization state by the electromagnetic expansion valve shown in FIGS. 3A and 3B;
FIG. 10 is a schematic diagram of a first method of controlling switching of an initialization state by the electromagnetic expansion valve shown in FIG. 4; FIG. And
FIG. 11 is a schematic diagram of a second method of controlling the switching of an initialization state by the electromagnetic expansion valve shown in FIG. 4.

1 and 2, an air conditioner system is shown according to an embodiment. The air conditioner system includes a heat exchange system such as a vehicle or home air conditioner system. The heat exchange system exchanges heat with air at the surrounding side or cooling liquid by the system refrigerant. The heat exchange system has a cooling function and / or a heating function and / or a dehumidification function. The air conditioner system performs a refrigeration cycle or a heating cycle according to the control instructions. The air conditioner system forms a refrigerant flow path by a compressor 100, an outdoor heat exchanger, an indoor heat exchanger, and at least one electronic expansion valve EXV connected to each other. The air conditioner system performs a refrigeration cycle when the indoor heat exchanger functions as an evaporator and a heating cycle when the indoor heat exchanger functions as a condenser. For example, the refrigeration cycle is performed to cool the vehicle or room in the hot summer, and the heating cycle is performed to warm the vehicle or room in the cold winter. The humidity of the ambient air in the vehicle or the interior can be adjusted such that the humidity of the vehicle is eliminated so that the indoor air humidity is relatively appropriate. The electronic expansion valve is a throttling element that regulates the refrigerant flow between the external heat exchanger and the internal heat exchanger during the refrigeration / heating cycle. The heat exchange system includes a compressor, a first heat exchanger, at least one evaporator and at least one electronic expansion valve. The first heat exchanger is arranged in a pipeline between the outlet of the compressor and the inlet of the electromagnetic expansion valve, the outlet of the evaporator and the inlet of the compressor being communicated by the pipeline. The control unit of the heat exchange system controls the opening degree of the electronic expansion valve, and the control unit stores initialization state information. The initialization state information includes at least an initialization completion state. The control unit of the heat exchange system may store initialization state information of the electronic expansion valve, the initialization state information includes at least an initialization completion state, and the electronic expansion valve switches the initialization state to the initialization completion state based on the initialization state information, The opening degree of the electromagnetic expansion valve is adjusted; And / or the control unit uses the position information of the electromagnetic expansion valve as the initial position information of the electromagnetic expansion valve based on the position information of the electromagnetic expansion valve stored by the control unit of the heat exchange system, whereby the electronic expansion valve is applied to the initial position information. On the basis of the initialization completion state, after which the opening degree of the electromagnetic expansion valve is adjusted. The initialization status information and position information are stored before the electronic expansion valve is powered down, so that the electronic expansion valve can quickly obtain the current position information and quickly switch to the initialization complete state after power up. This reduces the risk of inconsistent electronic expansion valves, saves system startup time, and reduces system energy consumption.

The control unit of the heat exchange system includes an air conditioner controller and an electrical control unit of an electronic expansion valve. The electrical control unit operates by controlling the mechanical part of the electromagnetic expansion valve. The air conditioner controller or the electrical control unit includes an initialization state switching subunit capable of checking or extracting at least initialization state information of the electronic expansion valve, wherein the electronic expansion valve initializes the initialization state based on the initialization state information. Switch to And / or the initialization state switching subunit uses the position information of the electronic expansion valve as initial position information, whereby the electronic expansion valve can be adjusted to be in an initialization complete state based on the initial position information.

In the embodiment shown in FIG. 1, the heat exchange system comprises a compressor 100 connected by a refrigerant pipeline, a first heat exchanger 200, a second heat exchanger 300, a first evaporator 401, a second evaporator ( 402, a first electromagnetic expansion valve 501, and a second electromagnetic expansion valve 502. The first heat exchanger 200 is disposed between the outlet of the compressor 100 and the inlets of the first electromagnetic expansion valve 501 and the second electromagnetic expansion valve 502. The second heat exchanger 300 may include a first heat exchange part 301 and a second heat exchange part 302, and the first heat exchange part 301 and the second heat exchange part 302 may exchange heat with each other. The second heat exchanger 300 is a two channel heat exchanger. The working medium of the first heat exchange part 301 channel and the second exchange part 302 channel contact each other in a manner without mass transfer. The first heat exchange portion 301 of the second heat exchanger 300 is disposed in the pipeline between the outlet of the first heat exchanger 200 and the inlet of the first electromagnetic expansion valve 501 and the electromagnetic expansion valve 502. The second heat exchange portion 302 of the second heat exchanger 300 is disposed in the pipeline between the inlet of the compressor 100 and the outlet of the first evaporator 401 and the second evaporator 402. The liquid storage device 600 is disposed in the pipeline between the inlet of the second heat exchanger 300 and the evaporator outlet, to prevent liquid strike from the refrigerant to the compressor. The two branches are arranged in parallel between the outlet of the second heat exchanger 300 and the inlet of the compressor in the heat exchange system, one of the two branches being connected to the first electronic expansion valve 501 and the first evaporator 401. And another branch comprises a second electromagnetic expansion valve 502 and a second evaporator 402. The first evaporator 401 is disposed between the outlet of the first electromagnetic expansion valve 501 and the inlet of the compressor 100. The second evaporator 402 is disposed between the outlet of the second electromagnetic expansion valve 502 and the inlet of the compressor 100. The first evaporator 401 and the second evaporator 402 are arranged in parallel, the first electromagnetic expansion valve 501 and the first evaporator 401 are arranged in series, the second electronic expansion valve 502 and the first Two evaporators 402 are arranged in series. The first solenoid expansion valve 501 and the second solenoid expansion valve 502 efficiently control the refrigerant flow in the branch where the first evaporator 401 and the second evaporator 402 are located by adjusting the opening degree according to a specific condition. This reduces the mutual indirection between branches.

In the heat exchange system of another embodiment shown in FIG. 2, another branch is arranged in parallel between the outlet of the second heat exchanger 300 and the inlet of the compressor 100, the branch comprising a third electromagnetic expansion valve and a cooler. do. The cooler functions as a battery cooling element that reduces the temperature of the heat generated by the battery device. The third electromagnetic expansion valve and the cooler are also arranged in series. The third electromagnetic expansion valve controls the flow of refrigerant in the branch where the battery cooler is located by adjusting the opening degree. In order to explain the control system and the control method of the first electromagnetic expansion valve, the second electromagnetic expansion valve and the third electromagnetic expansion valve, the first electromagnetic expansion valve, the second electromagnetic expansion valve and the third electromagnetic expansion valve are referred to as electromagnetic expansion valves ( Collectively called EXV).

The first heat exchanger 200 as a heat absorbing device or a heat dissipating device such as an evaporator or a condenser may absorb heat from the external peripheral medium or disperse the heat into the external peripheral medium by the refrigerant. The second heat exchanger 300 as a heat absorbing device such as an evaporator absorbs heat from the external peripheral medium by the refrigerant. The third heat exchanger 400 as a heat dissipation device, such as a condenser or air cooling device, dissipates heat to the surrounding medium by the refrigerant.

3A, 3B and 4 illustrate embodiments of three kinds of control systems included in an air conditioner system. The air conditioner control system includes an air conditioner controller 61 and an electrical control unit 62 that controls the operation of the electromagnetic expansion valve. The air conditioner controller 61 is configured to receive and analyze control signals and / or input information of the vehicle system or control panel, and transmit the analyzed control signals to the electronic expansion valve, the electronic expansion valve being based on the control signal. To work. Alternatively, the electrical control unit 62 receives and analyzes the control information and / or sensor information transmitted by the air conditioner control device 61 and for the electronic expansion valve stored by the electrical control unit 62. The control signal is obtained by calculating based on the feedback information stored by the preset control program and / or the electric control unit, converting the control signal into an electric quantity that can be executed by the electronic expansion valve, and by means of the electric expansion valve It is configured to control. The air conditioner control device 61 includes a storage unit capable of storing initialization state information of the electronic expansion valve, and the initialization state information includes at least an initialization completion state. Alternatively, the electrical control unit includes a storage unit capable of storing initialization state information of the electronic expansion valve. The electromagnetic expansion valve switches the initialization state to the initialization complete state based on the initialization state information of the electromagnetic expansion valve provided by the storage unit.

The air conditioner controller 61 or the electric control unit 62 checks or extracts at least initialization state information of the electromagnetic expansion valve and controls the electronic expansion valve to switch the initialization state to the initialization complete state. And a switching subunit. The storage unit may store the positional information of the electronic expansion valve. Before the opening degree of the electromagnetic expansion valve is adjusted, based on the stored position information of the electromagnetic expansion valve, the initialization state switching subunit uses the stored position information of the electromagnetic expansion valve as the initial position information of the electromagnetic expansion valve, whereby the electromagnetic expansion valve is The initial position information can be obtained and adjusted to be in the initialization complete state based on the initial position information, the electronic expansion valve can quickly obtain the current position information and quickly switch to the initialization completion state after power up again. This reduces the risk of inconsistent electronic expansion valves, saves system startup time, and reduces system energy consumption.

As shown in FIGS. 3A and 3B, the air conditioner controller 61 as a control center of the air conditioner system receives a control signal and / or input information and / or sensor information of a vehicle system or a control panel. And to transmit the analyzed control signal to EXV. The control signal includes at least an initialization state switching signal. The air conditioner controller can switch the state of the EXV directly to the initialization complete state in response to the initialization state switching signal without performing mechanical operation for initialization by the EXV, thereby reducing mechanical wear. The electrical control unit 62 receives and analyzes the control information and / or sensor information transmitted by the air conditioner controller, and by the preset control program and / or the electrical control unit for EXV stored by the electrical control unit. And to obtain a control signal by calculating based on the stored feedback information. The EXV operates based on the control signal received by the electrical control unit 62, converts the control signal into an amount of electricity that can be executed by the EXV, and controls the EXV to operate based on the amount of electricity.

An air conditioner controller or electrical control unit is provided with an initialization state switching subunit capable of identifying or extracting at least initialization state information of any EXV and / or providing an initialization state switching signal to the EXV. Based on the confirmed initialization state information and position information of EXV stored by the air conditioner control device 61, the initialization subunit may provide an initialization state switching signal to any EXV to switch the initialization state. The initialization state information includes at least an initialization completion state, and further includes an initialization incomplete state. The air conditioner controller 61 includes a storage unit. The storage unit may store the location information of the EXV, and may further store the initialization status information checked by the initialization subunit.

The air conditioner controller 61 includes a central processing module, and the storage unit is disposed in an integrated manner in the central processing module of the air conditioner control. Alternatively, in another embodiment the electrical control unit 62 comprises a storage unit. The storage unit can store the positional information and the initialization state information of the EXV, so that the electric control unit reads the stored information in the power-up step. The electrical control unit 62 provides a storage unit by placing the central processing module 621, which is arranged in an integrated manner in the central processing module of the electrical control unit. The position of EXV is represented by the position at which the valve needle is located and is generally expressed in the number of steps. For example, the position of 0 steps indicates that the valve needle is at the bottom dead center and the flow in this case is 0, and the position of 480 steps indicates that the valve needle is at the top dead center. Becomes The state of EXV includes at least three states: non-initialization, initialization and completion of initialization. The state of the EXV is fed back to the EXV's air conditioner control unit or electrical control unit in a real time manner.

The storage unit is a non-volatile storage element and the EXV can store data when powered down so that the EXV can use the data when powered up. In each power-up step, the EXV obtains an initialization state switching signal based on the positional information and the initialization state information provided by the storage unit of the air conditioner control device or the storage unit of the electrical control unit. The electrical control unit controls EXV to complete the switching of the initialization state based on the initialization state switching signal. The EXV may acquire initial position information and adjust its state to the initialization complete state. The original position of the EXV is then used as the initial position in the adjustment of the opening degree, and the excessive deviation that occurs when the EXV cannot determine the initial position or confirms the initial position is prevented, thereby reducing the risk of inconsistency, Adjustment accuracy is improved; Since the mechanical structure of the EXV does not perform an initialization operation, initialization is omitted during the power-up phase of the EXV, for example a process that changes from full closure to some degree or from full closure to full open and to some degree. Does not occur when EXV performs initialization; The start-up time of the EXV is shortened, and the power consumption and initialization noise of the EXV are also reduced.

When the air conditioner controller starts a program for controlling the EXV to be powered down, the storage unit of the air conditioner controller or the electric control unit stores at least the initialization completion state and position information of the EXV. When the air conditioner controller starts a program to control the EXV to power up, the air conditioner controller or the electric control unit switches the built-in initialization state based on the initialization completion state and position information of the electronic expansion valve stored by the storage unit. The sub unit acquires the initialization state switching signal, controls EXV to switch the state to the initialization complete state, sets the stored position information to the current initial position, thereby completing the switching of the initialization state.

In the embodiment of the control system shown in FIGS. 3A and 3B, the control system is a LIN control system and is configured to transmit signals in a Local Internet Network (LIN) control mode. The LIN control system includes a master node and a plurality of slave nodes. In an embodiment, the air conditioner control 61 (such as the HVAC control) functions as a LIN master node or LIN bus and EXV functions as one of the LIN slave nodes. During the power-up phase, the initialization process of the EXV is omitted, thereby reducing the power consumption of the node where the EXV is located, and reducing the power consumption of the overall LIN network, for example, the ambient temperature of the vehicle, such as a high temperature environment in the engine compartment. Is indirectly reduced, and the reliability of device performance is improved.

The electric control unit 62 includes the above-described central processing module 621, bus signal transmission / reception module (LIN transmission / reception module 622), stepping driving control module 623, and driving module 624. The electrical control unit is configured to control and operate mechanical parts of the EXV, such as the rotor, the transmission part and the valve needle of a stepping motor (not shown). In particular, the rotor is controlled to rotate by an electrical control unit, the rotation of the rotor allowing the valve needle to move up and down, thereby adjusting the opening degree by adjusting the position of the valve needle. In the power-up start phase of the EXV, the EXV adjusts the position of the EXV and acquires the information stored by the storage unit, thereby adjusting the state of the EXV to the initialized state, thereby reducing the risk of inconsistency, and adjusting the precision of the EXV It eliminates the initial calibration in the power-up phase, further reducing the mechanical wear of the EXV caused by multiple initializations for a relatively long time and improving the product service life.

The LIN transmit / receive module 622 is configured to transmit a signal detected on the LIN bus to the central processing module.

The central processing module 621 is configured to analyze the signal so as to obtain an analysis result and transmit a feedback signal corresponding to the analysis result by the LIN signal transmission module 13 to the LIN bus.

The central processing module 621 receives and analyzes control information from the master control panel of the air conditioner system, transmits the analyzed control signal for the EXV to the drive control module, and records or stores current position information of the EXV, And transmit a feedback signal corresponding to the analysis result to the LIN bus via the bus transceiver module.

The drive control module 623 is configured to receive a control signal for controlling the EXV sent by the air conditioner control device or the central processing module of the electric control unit and to transmit the control signal to the drive module.

The drive module 624 is configured to provide an electrical signal to the electronic coil in response to the request of the control signal, such that the electrical signal controls and operates the valve needle.

When the electric control unit stores EXV position information and initialization state information by providing a storage unit, when the EXV is powered up, the EXV reads the initialization completion state from the stored initialization state information and resets the state of the EXV to the initialization completion state. Switching to; The electrical control unit can read the stored position information and set the stored position information to the current initial position of the EXV.

Alternatively, when the air conditioner controller stores the location information and initialization state information of the EXV by providing a storage unit, in the power-down phase of the EXV, the location information and initialization state information are stored in the form of a LIN signal. Is sent from the EXV to the air conditioner controller. When powered up, the air conditioner controller sends an initialization state switching signal to the electrical control unit of EXV in the LIN control mode; The initialization state switching signal includes an initialization state switching signal and stored position information. The electric control unit receives the initialization state switching signal, and switches the state of EXV to the initialization completion state; The electrical control unit receives the stored positional information, sets the stored positional information to the current initial position of the EXV, thereby completing the switching of the initialization state by the EXV.

The initialization state switching signal provided to the EXV by the air conditioner controller is a LIN signal. As shown in FIG. 5, the LIN signal includes at least two LIN data bytes, and each data byte includes eight data bits. The location information is indicated by the LIN location signal as follows. All eight bits of the Nth byte and the two low bits (bits 0 and 1) of the (N + 1) th byte are used to indicate the current position of EXV. Initialization status information is indicated by two high bits (bits 6 and 7) of the (N + 1) th byte, where N is 1 or greater than 1. Using two segments included in the initialization state switching signal, the LIN master node can transmit state switching and stored position information to the electrical portion of the EXV. The other LIN signal is defined with reference to the definitions of the two signals described above in response to the data of the LIN frame.

In the air conditioner control system shown in FIG. 4 according to another embodiment, the air conditioner control device 63 is arranged in an integrated manner in the electrical control unit of the EXV.

The air conditioner controller 63 receives input information and / or sensor information of the master control panel of the air conditioner system, and preset control program and / or air conditioner for EXV stored by the air conditioner controller. Retrieving the control signal by calculating based on the feedback information stored by the control device and transmitting the control signal to the electric control unit 64, wherein the feedback information is at least in an initial state stored by the storage unit of the air conditioner control device. Includes information and location information.

The electric control unit 64 is configured to convert the control signal into an amount of electricity that can be executed by the EXV and to control the EXV by the amount of electricity.

The air conditioner controller is provided with a central processing module 630, and the electric control unit 64 of EXV is provided with a drive control module 641 and a drive module 642. The central processing module of the air conditioner controller receives input information and / or sensor information, generates a control signal for the EXV by calculation, sends the control signal to the drive control module, and records the current position information of the EXV. Or to store. In the power-down phase of the EXV, the positional information and the initialization state information are stored in the form of variables in the central processing module of the air conditioner controller 63 or in the provided storage unit. The air conditioner controller or the electrical control unit may be configured with an initialization state switching subunit capable of identifying or extracting at least stored initialization state information of any EXV and / or providing an initialization state switching signal to any EXV. Is provided. The initialization subunit switches the initialization state by providing an initialization state switching signal to any EXV based on the confirmed initialization state information and the stored position information of EXV.

In an embodiment, the storage unit of the air conditioner control and the initialization state switching subunit are arranged in an integrated manner in the central processing module 630 of the air conditioner control. In the power-up phase of the EXV, the initialization state switching subunit may read the initialization completion state from the initial state information stored by the storage unit, and the initialization state switching subunit reads the stored position information and stores the stored position information in the current state of the EXV. It provides an electrical control unit that sets the initial position, switches the state to the initial state, and sets the stored position information to the current initial position of the EXV.

6 to 11 showing control methods for three types of air conditioner systems in FIGS. 3A, 3B and 4, the control method includes a method of controlling EXV.

When the air conditioner controller starts a program that controls the EXV to power down, the built-in storage unit of the air conditioner controller or the electrical control unit stores the initialization state and position information of the EXV, and then causes the EXV to power down. By controlling, the EXV thus completes the switching of the initial state before adjusting the opening degree in the power-up phase, and provides a precise initial opening as a basis for adjusting the opening degree.

When the air conditioner controller starts a program that controls the EXV to power up, based on the initialization completion state and position information of the EXV stored by the storage unit, the EXV switches the state to the initialization completion state and switches the position information. Set to the current initial position to complete the switching of the initial state.

As shown in FIG. 6, the air conditioner control device communicates with an EXV in a local Internet network control mode. In the power-down step of EXV, the method includes the following steps S11 to S13.

In step S11, the air conditioner controller starts a program for controlling the EXV to be powered down.

In step S12, the positional information and the initialization state information are fed back from the EXV to the storage unit of the air conditioner controller for storing in the form of a LIN signal.

In step S13, EXV is controlled to be powered down and the method ends.

In the power-up phase of EXV, the method includes the following steps S21 to S24.

In step S21, the air conditioner control device controls the EXV to be powered up.

In step S22, in the LIN control mode, the initialization state switching subunit sends the initialization state switching signal and the stored position information to EXV.

In step S23, the electric control unit of EXV next switches the state based on the received initialization state switching signal, and switches the state of EXV to the initialization completion state, where the initialization state switching signal is generated by the initialization state switching subunit. Provided; The electrical control unit of the EXV receives the stored positional information, and sets the stored positional information as the current initial position of the EXV.

In step S24, EXV completes the switching of the initialization state.

Referring to FIG. 7, which shows another method of controlling EXV according to another embodiment, EXV performs at least one initialization operation before powering down. The method for powering down the EXV includes steps S31 to S36.

In step S31, the air conditioner controller starts a program for causing the EXV to be powered down.

In step S32, the air conditioner controller transmits an initialization control signal to EXV.

In step S33, the EXV is controlled to perform initialization, thereby further reducing the risk of inconsistent EXV.

In step S34, after the initialization is completed, EXV feeds back the status information and the position information to the air conditioner controller (LIN master mode).

In step S35, the storage unit of the air conditioner controller stores state information and position information fed back by the EXV.

In step S36, the EXV is controlled to be powered down, and the method ends.

For the power-up phase of EXV, reference may be made to the description of the power-up phase shown in FIG. 6.

Referring to FIG. 8, which shows a third embodiment of the method for the air conditioner system in FIGS. 3A and 3B, the position information and initialization state information of the EXV are stored in the electrical control unit of the EXV before the EXV is powered down. Stored on the device.

In the power-down step of EXV, the method includes the following steps S41 to S44.

In step S41, the air conditioner controller starts a program for controlling the EXV to be powered down.

In step S42, the air conditioner control device controls the storage unit of the EXV to transmit the storage command in the local Internet network control mode, thereby storing the positional information and the initialization state information.

In step S43, after storing the information, the EXV transmits a storage completion feedback signal to the air conditioner control device.

In step S44, the EXV is controlled to be powered down, and the method ends.

In the power-up phase of EXV, the method includes steps S51 to S54.

In step S51, the air conditioner controller controls the EXV to be powered up.

In step S52, the initialization state switching subunit of the electrical control unit of EXV reads the initialization completion state in the initialization state information from the storage unit of the electrical control unit, so that EXV is in the initialization completion state.

In step S53, the electric control unit of EXV reads the position and sets the read position to the current initial position of EXV.

In step S54, EXV completes the switching of the initialization state.

Referring to FIG. 9, which shows a fourth embodiment of the method for the air conditioner system in FIGS. 3A and 3B, showing a method of controlling EXV, power down as compared to the third embodiment of the method described above. Before that, the EXV performs at least one initialization operation. The method includes the following steps S61 to S66.

In step S61, the air conditioner controller starts a program for controlling the EXV to be powered down.

In step S62, the air conditioner controller sends an initialization control signal to EXV.

In step S63, EXV is controlled to perform initialization.

In step S64, after the initialization is completed, the storage unit of the electric control unit is controlled to store the state information and the position information fed back by the EXV.

In step S65, the EXV transmits a feedback signal indicating that the state information and the position information have been successfully stored in the air conditioner controller (LIN master mode).

In step S66, the EXV is controlled to be powered down, and the method ends.

For the power-up phase of EXV, reference may be made to the description of the steps shown in FIG. 8.

Referring to FIG. 10, which shows a first embodiment of a method for an air conditioner system in FIG. 4, showing a method of controlling an EXV, the air conditioner controller 63 is integrated into the electrical control unit of the EXV. Are arranged in a manner.

In the power-down step of EXV, the method includes the following steps S71 to S73.

In step S71, the air conditioner controller starts a program for controlling the EXV to be powered down.

In step S72, the positional information and the initialization state information are stored in the storage unit of the air conditioner control device in the form of variables.

In step S73, the EXV is controlled to be powered down, and the method ends.

In the power-up step of EXV, the method includes the following steps S81 to S84.

In step S81, the air conditioner controller is powered up.

In step S82, the initialization state switching subunit reads out the initialization completion state in the initialization state information from the storage unit, so that the state of EXV is in the initialization completion state.

In step S83, the initialization state switching subunit reads the position from the storage unit and sets the read position as the current initial position of EXV.

In step S84, EXV completes the switching of the initial state.

Referring to FIG. 11, which shows a second embodiment of the method for the air conditioner system in FIG. 4, showing a control method of EXV, EXV performs at least one initialization operation before powering down. In the power-down phase of EXV, the method includes steps S91 to S94.

In step S91, the air conditioner controller starts a program for controlling the EXV to be powered down.

In step S92, the air conditioner controller controls EXV to perform initialization, thereby further reducing the risk of mismatch.

In step S93, after the initialization is completed by EXV, the storage unit of the air conditioner control device is controlled to store state information and position information of EXV.

In step S94, EXV is controlled to be powered down, and the method ends.

In the power-up phase of EXV, reference may be made to the description of the power-up phase shown in FIG. 10.

With the control method of the above air conditioner system, whether or not initialization is performed during the power down process, switching of the initialization state of the position information, the initialization completion state in the initialization state information and the initialization state of EXV is not affected. In addition, the storage unit as a functional unit for storing the state information and the position information of the EXV may be disposed in the electrical control unit of the EXV, the LIN master node, the central processing module of the air conditioner, or another module.

The foregoing is merely a preferred embodiment of the present disclosure and is not intended to limit the present disclosure in any way. Although the present disclosure has been disclosed above by the preferred embodiment, the disclosure of the present invention is not limited by the preferred embodiment. Those skilled in the art will be able to make various changes and modifications to the technical solutions of the present disclosure or to change the technical solutions to equivalent embodiments by using the disclosed methods and technical solutions without departing from the scope of the technical solutions of the present disclosure. . Accordingly, simple design changes, equivalent modifications, and modifications made to the embodiments described above based on the present disclosure without departing from the technical solutions disclosed in the present invention are all included within the protection scope of the technical solutions of the present disclosure. do.

61: air conditioner controller 62: electric control unit
621: central processing module 622: LIN transceiver module
623: stepping drive control module 624: drive module

Claims (18)

In the heat exchange system,
compressor;
A first heat exchanger;
At least one evaporator;
At least one electronic expansion valve; And
A control unit of said heat exchange system,
The first heat exchanger is disposed in a pipeline between the outlet of the compressor and the outlet of the electromagnetic expansion valve, the outlet of the evaporator and the inlet of the compressor are in communication by a pipeline,
The control unit of the heat exchange system is configured to control the opening degree of the electromagnetic expansion valve, and the control unit of the heat exchange system is configured to control and operate an air conditioner control device and a mechanical part of the electronic expansion valve. An electrical control unit of said electronic expansion valve,
At least one of the air conditioner control device and the electrical control unit of the heat exchange system includes a storage unit, wherein the storage unit is configured to store position information of the electromagnetic expansion valve and initialization state information of the electronic expansion valve. Become; The position information of the electromagnetic expansion valve includes a position of a valve needle of the electromagnetic expansion valve, and initialization state information of the electromagnetic expansion valve includes a current state of the electromagnetic expansion valve, and the current state of the electromagnetic expansion valve Includes at least a non-initialized state, an initialized state and an initialized complete state;
At least one of the air conditioner control device and the electrical control unit of the heat exchange system includes an initialization state switching subunit, and the initialization state switching subunit includes the positional information and the initialization state information of the electromagnetic expansion valve. Identify or extract and provide an initialization state switching signal based on the position information and the initialization state information of the electromagnetic expansion valve;
At least one of the air conditioner control device and the electrical control unit of the heat exchange system includes: a stored position of the valve needle of the electromagnetic expansion valve as an initial position of the electromagnetic expansion valve when adjusting the opening degree of the electromagnetic expansion valve. Set, obtain the initialization state switching signal, and control the electronic expansion valve to complete switching of the initialization state based on the initialization state switching signal,
The switching of the initialization state comprises: in each power-up step, directly switching a stored current state of the electromagnetic expansion valve to the initialization complete state without performing a mechanical operation for initialization by the electromagnetic expansion valve,
Heat exchange system. delete The method of claim 1,
The at least one evaporator comprises a first evaporator and a second evaporator, wherein the at least one electromagnetic expansion valve comprises a first electromagnetic expansion valve and a second electronic expansion valve;
The heat exchange system further comprises a second heat exchanger, the second heat exchanger comprising a first heat exchange portion and a second heat exchange portion, wherein the first heat exchange portion and the second heat exchange portion are configured to heat exchange with each other;
The first heat exchange portion is disposed in a pipeline between the outlet of the first heat exchanger and at least one of the inlet of the first electromagnetic expansion valve and the inlet of the second electromagnetic expansion valve, wherein the second heat exchange portion is the compressor A pipeline is disposed between the inlet of and at least one of the outlet of the first evaporator and the outlet of the second evaporator;
In the heat exchange system, the first evaporator and the second evaporator are arranged in parallel, the first electromagnetic expansion valve and the first evaporator are arranged in series, and the second electronic expansion valve and the second evaporator are in series Posted with,
Heat exchange system. The method of claim 3,
The heat exchange system is a heating and ventilating air conditioner cooling system, the heat exchange system further comprising a third electronic expansion valve and a cooler; And the third electromagnetic expansion valve and the cooler are disposed between an outlet of the first heat exchanger and the inlet of the compressor, wherein the cooler is disposed in parallel with the first and second evaporators. The method of claim 3,
The heat exchange system further includes a third electromagnetic expansion valve and a cooler, wherein the third electromagnetic expansion valve and the cooler are disposed between the outlet of the first heat exchanger and the inlet of the compressor, and the cooler comprises the first cooler. Disposed parallel to the first evaporator and the second evaporator;
The third electromagnetic expansion valve and the cooler are arranged in series, and the refrigerant of the branch where the battery cooler is disposed is controlled by adjusting the opening degree of the third electromagnetic expansion valve; The cooler is a cooling element for the heat generating component configured to reduce the temperature of the heat generating component;
The initial state switching subunit of the control unit is configured to initialize the position information of the third electromagnetic expansion valve based on the position information of the third electromagnetic expansion valve stored by the control unit of the heat exchange system. Used as position information, and before the opening degree of the third electromagnetic expansion valve is adjusted, switching the initialization state of the electromagnetic expansion valve to the initialization completion state,
Heat exchange system. Air conditioner controls; And
An air conditioner control system comprising an electrical control unit for controlling the operation of an electronic expansion valve,
The air conditioner control device is an air conditioner control center, and is configured to receive and analyze at least one of control signals and input information of a vehicle system or a control panel and transmit the analyzed control signals to the electronic expansion valve. An electromagnetic expansion valve operates based on the control signal; or
The electric control unit receives and analyzes at least one of control information and sensor information transmitted by the air conditioner control device, and preset control program and the electric control for the electronic expansion valve stored by the electric control unit. Obtain a control signal by calculating based on at least one of the feedback information stored by the unit, convert the control signal into an amount of electricity that can be executed by the electromagnetic expansion valve, and control the electromagnetic expansion valve by the amount of electricity. ,
At least one of the air conditioner control device and the electrical control unit of the electromagnetic expansion valve includes a storage unit, the storage unit configured to store position information of the electromagnetic expansion valve and initialization state information of the electronic expansion valve. Become; The position information of the electromagnetic expansion valve includes a position of a valve needle of the electromagnetic expansion valve, the initialization state information of the electromagnetic expansion valve includes a current state of the electromagnetic expansion valve, the current state of the electromagnetic expansion valve Includes at least a non-initialized state, an initialized state and an initialized complete state;
At least one of the air conditioner controller and the electric control unit of the electromagnetic expansion valve includes an initialization state switching subunit, and the initialization state switching subunit includes the position information and the initialization state information of the electromagnetic expansion valve. Identify or extract and provide an initialization state switching signal based on the position information and the initialization state information of the electromagnetic expansion valve;
At least one of the air conditioner control device and the electrical control unit of the electromagnetic expansion valve may include: storing the valve needle of the electromagnetic expansion valve as an initial position of the electromagnetic expansion valve when adjusting the opening degree of the electromagnetic expansion valve. Set, obtain the initialization state switching signal, and control the electronic expansion valve to complete switching of the initialization state based on the initialization state switching signal,
The switching of the initialization state comprises: in each power-up step, directly switching a stored current state of the electromagnetic expansion valve to the initialization complete state without performing a mechanical operation for initialization by the electromagnetic expansion valve,
Air conditioner control system. delete delete The method of claim 6,
The storage unit is disposed in a central processing module of the air conditioner control device or the electrical control unit, the storage unit being a non-volatile storage element;
When the air conditioner controller starts a program for controlling the electronic expansion valve to be powered off, the air conditioner controller or the storage unit of the electric control unit is identified by the initialization state switching subunit. Store the position information and the initialization state information of a valve;
When the air conditioner controller starts a program for controlling the electronic expansion valve to be powered on, the initialization state switching subunit identifies or extracts the position information and the initialization state information of the electronic expansion valve, and the electronic And provide the initialization state switching signal based on the position information of the expansion valve and the initialization state information.
Air conditioner control system. The method of claim 6,
The initialization state switching signal includes the initialization state information and the location information, and the initialization state switching signal is transmitted to the electrical control unit in a local internet network control mode,
Air conditioner control system. The method of claim 6,
The initialization state switching signal provided by the air conditioner controller to the electromagnetic expansion valve is a LIN signal, the initialization state switching signal comprising at least two LIN data bytes, each of the two LIN data bytes being 8 Includes data bits;
The stored position information is represented by all eight bits of the N th byte and two low bits (bit 0 and bit 1) of the (N + 1) th byte; The initialization status information is indicated by two high bits (bit 6 and bit 7) of the (N + 1) th byte, where N is 1 or greater than 1;
The air conditioner control device is configured to transmit, by the initialization state switching signal, an initialization state switching instruction and the stored position information to the electric control unit of the electromagnetic expansion valve,
Air conditioner control system. The method of claim 6,
The air conditioner controller is configured to receive at least one of input information and sensor information of a master control board of the air conditioner system; The electrical control unit is configured to receive and analyze at least one of control information and sensor information transmitted by the air conditioner control device, and the electrical control unit and the preset control program for the electronic expansion valve stored by the electrical control unit. Obtain a control signal by calculating based on at least one of the feedback information stored by the controller, convert the control signal into an amount of electricity that can be executed by the electromagnetic expansion valve, and control the electromagnetic expansion valve by the amount of electricity; The air conditioner controller stores the current position information and the current initialization state information of the electromagnetic expansion valve by providing the storage unit and provides the stored information to the electrical control unit, wherein the control signal is at least an initialization state switching signal. It includes; Or the electrical control unit stores the feedback information by providing a storage unit, the feedback information being stored by at least the current initialization state information and the current position stored by the storage unit of the electrical control unit to be read by the electrical control unit. Includes information; or
The air conditioner controller is configured to receive at least one of input information and sensor information of a master control board of an air conditioner system and to store the air conditioner and a preset control program for the electronic expansion valve stored by the air conditioner controller. Obtain a control signal by calculating based on at least one of the feedback information stored by the controller and transmit the control signal to the electrical control unit; The electric control unit is configured to convert the control signal into an amount of electricity that can be executed by the electromagnetic expansion valve and to control the electromagnetic expansion valve by the amount of electricity; The feedback information stored by the air conditioner control device includes at least the current initialization state information and current position information,
Air conditioner control system. The method of claim 6,
The air conditioner controller is provided with a central processing module; The electric control unit of the electromagnetic expansion valve is provided with a LIN transmission / reception module, a central processing module, a drive control module and a drive module; A bus transmit / receive module is configured to transmit a signal detected on a LIN bus to the central processing module; The central processing module receives and analyzes control information from the master control board of the air conditioner system, transmits the analyzed control signal for the electronic expansion valve to the drive control module and sends the current position information of the electronic expansion valve. Store and transmit a feedback signal corresponding to an analysis result to the LIN bus via the bus transceiver module; The control signal comprises an initialization state switching signal, the storage unit being arranged in an integrated manner in the central processing module of the electrical control unit, or the storage unit being arranged in the central processing module of the air conditioner control device. Become; or
The air conditioner control unit is provided with a central processing module, and the electric control unit is provided with a drive control module and a drive module; The central processing module of the air conditioner control device receives at least one of input information and sensor information and generates a control signal for the electronic expansion valve by calculation and sends the control signal to the drive control module and the Store current position information of the electronic expansion valve; The storage unit of the air conditioner control unit is arranged in an integrated manner in the central processing module of the air conditioner control unit; And
The stepping drive control module is configured to receive the control signal for controlling the electromagnetic expansion valve transmitted by the air conditioner control device or the central processing module of the electrical control unit and to transmit the control signal to the drive module. Become; The drive module is configured to provide an electrical signal to the electronic coil in response to the request of the control signal, and the valve needle is controlled to operate by applying an electrical signal on the electronic coil.
Air conditioner control system. A control method of an air conditioner system comprising a method of controlling an electronic expansion valve of an air conditioner system, the method of controlling the electronic expansion valve comprising:
When the air conditioner controller starts a program to control the electromagnetic expansion valve to power off,
Storing, by the electric control unit or the built-in storage unit of the air conditioner control unit, initialization state information and position information of the electromagnetic expansion valve; The position information of the electromagnetic expansion valve includes a position of a valve needle of the electromagnetic expansion valve, the initialization state information of the electromagnetic expansion valve includes a current state of the electromagnetic expansion valve, and a current state of the electromagnetic expansion valve Includes at least a non-initialized state, an initialized state, and an initialized complete state,
Control the electronic expansion valve to be powered off after the initialization state information and the position information of the electromagnetic expansion valve are stored;
Set the stored position of the valve needle of the electromagnetic expansion valve as the initial position of the electromagnetic expansion valve when the opening degree of the electromagnetic expansion valve is adjusted, and perform the electronic operation without performing a mechanical operation for initialization by the electromagnetic expansion valve Directly switching a stored current state of an expansion valve to the initialization complete state;
How to control the air conditioner system. The method of claim 14,
When the air conditioner control device starts a program for controlling the electromagnetic expansion valve to be powered on, by the built-in initialization state switching subunit of the air conditioner control device or the electric control unit, the Obtain an initialization state switching signal by calculating based on the initialization state information and the position information of the electromagnetic expansion valve; Set the stored position of the valve needle of the electromagnetic expansion valve as the initial position of the electromagnetic expansion valve when the opening degree of the electromagnetic expansion valve is adjusted. And controlling the electronic expansion valve to directly switch the stored current state of the electromagnetic expansion valve to the initialization complete state without performing a mechanical operation for initialization by the electronic expansion valve,
How to control the air conditioner system. The method of claim 14,
When the air conditioner controller starts a program to control the electromagnetic expansion valve to be powered on, the method includes:
Control the electronic expansion valve to be powered on by the air conditioner controller;
Send, by the air conditioner control unit, an initialization state switching signal and the stored position information to the electronic expansion valve in a local internet network control mode; Identify and extract at least the initialization state information and the position information of the electromagnetic expansion valve by an initialization state switching subunit based on the information stored by the storage unit and provide the initialization state switching signal to the electromagnetic expansion valve; ; Switch states by the electrical control unit of the electromagnetic expansion valve based on the received initialization state switching signal; Receiving the stored position information by the electric control unit of the electromagnetic expansion valve and setting the stored position as an initial position and switching of the initialization state of the electromagnetic expansion valve is completed; or
Read the initialization completion state in the initialization state information by the initialization state switching subunit from the storage unit of the electrical control unit to switch the state of the electromagnetic expansion valve to the initialization completion state; The switching of the initialization state of the electromagnetic expansion valve is completed by reading the position information of the electromagnetic expansion valve by the electric control unit and setting the position information to an initial position of the electromagnetic expansion valve; or
Read the initialization completion state in the initialization state information by the initialization state switching subunit from the storage unit of the air conditioner control device to switch the state of the electromagnetic expansion valve to the initialization completion state, Reading the position information of the electromagnetic expansion valve by a conditioner control device and setting the position information to an initial position of the electromagnetic expansion valve to complete switching of the initialization state of the electromagnetic expansion valve;
How to control the air conditioner system. The method of claim 14,
When the air conditioner controller starts a program to cause the electromagnetic expansion valve to power off, the method includes:
Communicate with the electronic expansion valve in a local internet network control mode by the air conditioner controller; Store position information and initialization state information of the electromagnetic expansion valve by the storage unit of the air conditioner control device; Control the electronic expansion valve to be powered off; or
Store the position information and the initialization state information of the electronic expansion valve by controlling the storage unit of the electronic expansion valve by the air conditioner control device to transmit a storage command in a local Internet network control mode; Transmit a storage completion feedback signal to the air conditioner controller by the electromagnetic expansion valve after the electromagnetic expansion valve has stored the information; Control the electronic expansion valve to be powered off; or
Store, by the storage unit of the air conditioner control unit, the positional information and the initialization state information of the electromagnetic expansion valve; Controlling the electronic expansion valve to be powered off,
How to control the air conditioner system. The method of claim 14,
When the air conditioner controller starts a program to cause the electromagnetic expansion valve to power off:
Control, by the air conditioner controller or the electric control unit, the electronic expansion valve to transmit an initialization control signal to the electromagnetic expansion valve to perform initialization;
After the initialization is completed, controlling the storage unit of the air conditioner control device or the storage unit of the electrical control unit to store state information and position information fed back by the electromagnetic expansion valve,
How to control the air conditioner system.

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