Energy storage air conditioner control system and energy storage air conditioner

Abstract

The utility model discloses an energy storage air conditioner control system and an energy storage air conditioner. Comprising a detection module, a dial switch, a main control board and at least one expansion board, the main control board is used for controlling the working state of a correspondingly connected compressor in the energy storage air conditioner according to a first detection signal provided by the detection module and a dial signal provided by the dial switch, and the expansion board is used for receiving a second detection signal provided by the detection module according to the dial signal and forming a state signal according to the second detection signal; the main control board is also used for receiving a state signal provided by the expansion board according to the dial signal, forming a control signal according to the state signal and outputting the control signal to the expansion board; the expansion board is further used for controlling the working state of the correspondingly connected compressor in the energy storage air conditioner according to the control signal. According to the embodiment of the utility model, the detection module, the dial switch, the main control board and the at least one expansion board are arranged, so that various configurations can be compatible, various common signals can be detected, software versions are few, different configurations are set through the dial switch, and the working efficiency is improved.

Description

Technical Field

[0001] The embodiments of the utility model relate to the technical field of air conditioning, and in particular to an energy storage air conditioning control system and an energy storage air conditioning. Background Art

[0002] The new energy storage business has ushered in major development opportunities and has created a broad space for development. The temperature of the energy storage battery has become the most critical factor affecting the capacity and life of energy storage products, so the energy storage air conditioner needs to be temperature controlled.

[0003] The battery stack in the energy storage container requires a stable temperature. The equipment is outdoors for a long time, even in the wild, which places higher requirements on the protection level, insulation level, service life, and working environment temperature of the fan. The energy storage air conditioner can precisely control the temperature and humidity inside the container to meet the goals of unattended operation, automatic cooling, heat control, and humidity management.

[0004] However, the current industry has many differentiated customization requirements and diverse application environments, resulting in variable configurations of energy storage air conditioning refrigeration. For multiple refrigeration configurations, controller management and control are complex, control system switching is complex, non-standard design takes a long time, and design costs are high. Utility Model Content

[0005] The utility model provides an energy storage air conditioning control system and an energy storage air conditioning, which are compatible with various configurations, detect various common signals, and have common software for single system and multi-system, thus saving design time and design cost and improving work efficiency.

[0006] According to one aspect of the utility model, there is provided an energy storage air conditioning control system, comprising a detection module, a dip switch, a main control board and at least one expansion board;

[0007] The detection module and the dial switch are connected to the main control board and the expansion board. The main control board is communicatively connected to at least one expansion board. The main control board is used to control the working state of the correspondingly connected compressor in the energy storage air conditioner according to the first detection signal provided by the detection module and the dial signal provided by the dial switch. The expansion board is used to receive the second detection signal provided by the detection module according to the dial signal, and form a state signal according to the second detection signal; the main control board is also used to receive the state signal provided by the expansion board according to the dial signal, and form a control signal according to the state signal and output it to the expansion board; the expansion board is also used to control the working state of the correspondingly connected compressor in the energy storage air conditioner according to the control signal.

[0008] Optionally, the main control board and at least one expansion board are connected via a serial peripheral interface communication.

[0009] Optionally, the main control board includes a first control module, a first communication module, a first switch input interface, a first analog input interface, a first switch output interface and a first analog output interface; the detection module includes a first detection switch and a first sensor; the first control module is connected to the dial switch, the first communication module, the first switch input interface, the first analog input interface, the first switch output interface and the first analog output interface, the first switch input interface is connected to the first detection switch, and the first analog input interface is connected to the first sensor; the first switch output interface is connected to the first switch actuator in the energy storage air conditioner, the first analog output interface is connected to the first analog actuator in the energy storage air conditioner, and the first control module is used to control the first switch actuator and the first analog actuator in the energy storage air conditioner according to the dial signal, the state of the first detection switch and the signal of the first sensor; the first control module is also used to control the communication state of the first communication module according to the dial signal;

[0010] And / or, the expansion board includes a second control module, a second communication module, a second switch input interface, a second analog input interface, a second switch output interface and a second analog output interface; the detection module includes a second detection switch and a second sensor; the second control module is connected to the dial switch, the second communication module, the second switch input interface, the second analog input interface, the second switch output interface and the second analog output interface, the second switch input interface is connected to the second detection switch, and the second analog input interface is connected to the second sensor; the second switch output interface is connected to the second switch actuator in the energy storage air conditioner, and the second analog output interface is connected to the second analog actuator in the energy storage air conditioner, the second control module is used to form a status signal according to the dial signal, the state of the second detection switch and the signal of the second sensor, and control the communication state of the second communication module, the first control module is also used to form a control signal according to the status signal, and the second control module is also used to control the second switch actuator and the second analog actuator in the energy storage air conditioner according to the control signal.

[0011] Optionally, the main control board further includes a first current detection module, which is connected to the first control module; the first current detection module is used to detect the current on the first current line to be measured; and to form a first current signal to be output to the first control module, and the first control module is also used to control the overcurrent protection actuator according to the first current signal;

[0012] And / or, the expansion board also includes a second current detection module, which is connected to the second control module; the second current detection module is used to detect the current on the second current line to be measured; and form a second current signal to output to the second control module, and the second control module is also used to control the overcurrent protection actuator according to the second current signal.

[0013] Optionally, the main control board also includes a first power input module; the first power input module is connected to the power distribution unit of the energy storage air conditioner; the expansion board also includes a second power input module; the second power input module is connected to the power distribution unit through the main control board.

[0014] According to another aspect of the utility model, an energy storage air conditioner is provided, including an energy storage air conditioner control system.

[0015] Optionally, the energy storage air conditioner also includes a power distribution unit; the power distribution unit adopts a three-phase four-wire system to be connected to the three-phase load of the energy storage air conditioner, and is used to supply power to the three-phase load.

[0016] Optionally, three-phase loads include compressor inverters, EC fans and three-phase switching power supplies;

[0017] The compressor inverter is connected to the compressor, fan inverter and water pump inverter of the energy storage air conditioner, and is used to power the compressor, fan inverter and water pump inverter; the three-phase switching power supply is connected to the energy storage air conditioning control system, and is used to power the energy storage air conditioning control system.

[0018] Optionally, the AC voltage withstand range of the compressor inverter, EC fan and three-phase switching power supply is 323V to 552V.

[0019] Optionally, the power distribution unit includes a main switch, which is connected in series to a three-phase four-wire line.

[0020] The technical solution of the embodiment of the utility model is to set a detection module, a dip switch, a main control board and at least one expansion board. When there are multiple compressors in the energy storage air conditioner, the corresponding compressors can be controlled by the expansion board. Only one set of software system is needed, and there is no need to design additional software programs to control them separately. There are few software versions, and single-system and multi-system software are universal. It is compatible with multiple configurations and can detect multiple common signals. The energy storage air conditioner control system has strong versatility. Different configurations can be set by dip switches, which saves design time and design costs and improves work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0022] Figure 1 It is a structural schematic diagram of an energy storage air conditioning control system provided according to an embodiment of the utility model.

[0023] Figure 2It is a schematic diagram illustrating a DIP switch of an energy storage air conditioning control system provided according to an embodiment of the utility model.

[0024] Figure 3 It is a specific structural schematic diagram of an energy storage air conditioning control system provided according to an embodiment of the utility model.

[0025] Figure 4 It is a circuit structure diagram of a first switch input interface of an energy storage air conditioning control system provided according to an embodiment of the utility model.

[0026] Figure 5 It is a circuit structure diagram of a first switch output interface of an energy storage air conditioning control system provided according to an embodiment of the utility model.

[0027] Figure 6 It is a circuit structure diagram of a first analog input interface of an energy storage air conditioning control system provided according to an embodiment of the utility model.

[0028] Figure 7 It is a circuit structure diagram of a first analog output interface of an energy storage air conditioning control system provided according to an embodiment of the utility model.

[0029] Figure 8 It is a circuit structure diagram of a first power input module of an energy storage air conditioning control system provided according to an embodiment of the utility model.

[0030] Fig. 9 It is a circuit structure diagram of a second power input module of an energy storage air conditioning control system provided according to an embodiment of the utility model.

[0031] Fig.10 The present invention is a circuit diagram of a power supply detection module of a main control board of an energy storage air conditioning control system provided in accordance with an embodiment of the present invention.

[0032] Fig.11 It is a structural schematic diagram of an energy storage air conditioner provided according to an embodiment of the utility model. DETAILED DESCRIPTION

[0033] In order to enable those skilled in the art to better understand the solution of the utility model, the technical solution in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is only a part of the embodiment of the utility model, not all of the embodiments. Based on the embodiment of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the utility model.

[0034] It should be noted that the terms "first", "second", etc. in the specification and claims of the utility model and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchanged where appropriate, so that the embodiments of the utility model described here can be implemented in an order other than those illustrated or described here. In addition, the terms "including" and "having" and any of their variations are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device that includes a series of steps or units is not necessarily limited to those steps or units clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0035] Figure 1 Schematic diagram of a structure of an energy storage air conditioning control system provided according to an embodiment of the utility model. Figure 1 As shown, the energy storage air conditioning control system 40 includes a detection module 11, a dial switch 12, a main control board 13 and at least one expansion board 14; the detection module 11 and the dial switch 12 are connected to the main control board 13 and the expansion board 14, the main control board 13 is communicatively connected to at least one expansion board 14, the main control board 13 is used to control the working state of the corresponding compressor connected in the energy storage air conditioner according to the first detection signal provided by the detection module 11 and the dial signal provided by the dial switch 12, the expansion board 14 is used to receive the second detection signal provided by the detection module 11 according to the dial signal, and form a state signal according to the second detection signal; the main control board 13 is also used to receive the state signal provided by the expansion board 14 according to the dial signal, and form a control signal according to the state signal and output it to the expansion board 14; the expansion board 14 is also used to control the working state of the corresponding compressor connected in the energy storage air conditioner according to the control signal.

[0036] In this embodiment, the detection module 11 is a module for monitoring the temperature, pressure, etc. in the environment. Exemplarily, the detection module 11 may include a temperature sensor, a pressure sensor, a water level switch, a pressure switch, etc. The dip switch 12 is an address switch for operation control, which adopts the binary code principle of 0 / 1 and is mostly used for the conduction or disconnection of the program control board and the performance circuit of the control element. There are two pins on the upper and lower back sides corresponding to each key of the dip switch 12. When the code is turned to the ON side, the two pins are connected; when the code is turned to the OFF side, the two pins are disconnected. The dip switch 12 transmits the set dip signal to the main control board 13. Figure 2 is a schematic diagram illustrating a DIP switch of an energy storage air conditioning control system provided according to an embodiment of the utility model, such as Figure 2As shown, when the dial is set to 1, it means that this pin is turned on; when the dial is set to 0, it means that this pin is disconnected. Exemplarily, when the dial switch is used to select the number of compressors, three-phase electricity or single-phase electricity, the number of pumps and the method of using the condenser, the number of dial switches is determined to be four, and at least one more can be set for reservation. When there are two compressors, three-phase electricity, two pumps and independent condensers, the dial switch is set to 1111, and the set dial signal is transmitted to the main control board 13. The compressor is a driven flow machine that lifts low-pressure gas to high-pressure gas. It is the heart of the refrigeration system. The compressor inhales low-temperature and low-pressure refrigerant gas from the suction pipe, compresses it by driving the piston through the operation of the motor, and discharges high-temperature and high-pressure refrigerant gas to the exhaust pipe to provide power for the refrigeration cycle. The main control board 13 is the main part responsible for commanding and controlling the work of each component, and is also the main part of the energy storage air conditioning control system 40. The control function is mainly realized by a single-chip microcomputer (Microcontroller Unit, MCU). The composition of the expansion board 14 is the same as that of the main control board 13, and it is connected to the main control board 13 through a communication protocol. The number of expansion boards 14 depends on the number of compressors in the energy storage air-conditioning system. One compressor represents a refrigeration system. When there is only one compressor in the system, only the main control board 13 needs to work; when there are two or more compressors, the main control board 13 controls at least one expansion board 14 to work. Exemplarily, when there are two compressors in the energy storage air-conditioning system, the number of expansion boards 14 is set to one; when there are three compressors in the energy storage air-conditioning system, the number of expansion boards 14 is set to two, and so on. A set of energy storage air-conditioning control system can control multiple compressors. When there are multiple compressors, only the number of expansion boards needs to be increased. During operation, the detection module 11 provides a first detection signal, which can be, for example, a temperature value or a pressure value provided by a temperature sensor or a pressure sensor. The main control board 13 controls the working state of the corresponding compressor connected in the energy storage air conditioner according to the first detection signal provided by the detection module 11 and the dial signal provided by the dial switch 12. For example, when the dial switch 12 provides the dial signal 1111, it indicates that the number of corresponding compressors connected in the energy storage air conditioner is two, and the main control board 13 needs to communicate and connect an expansion board 14. When the temperature value provided by the detection module 11 exceeds the set threshold, such as the detected temperature exceeds 100°C, the main control board 13 controls the corresponding compressor connected in the energy storage air conditioner to stop working. When there is only one compressor in the system, only the main control board 13 is needed to work, and there is no need to communicate and connect the expansion board 14, so there is no second detection signal; when there are two compressors in the system, the main control board 13 needs to control the communication connection of an expansion board 14, and the detection module 11 in the expansion board 14 provides a second detection signal, such as a temperature value or the state of a pressure switch. The status signal represents whether the expansion board 14 is powered and the number of expansion boards 14 that need to be set.The expansion board 14 is used to receive the second detection signal provided by the detection module 11 according to the dial signal, and to form a status signal according to the second detection signal; the main control board 13 is also used to receive the status signal provided by the expansion board 14 according to the dial signal, and to form a control signal according to the status signal and output it to the expansion board 14; the expansion board 14 is also used to control the working state of the corresponding compressor connected in the energy storage air conditioner according to the control signal. Exemplarily, the dial signal is 1111, indicating that there are two compressors in the system, and an expansion board 14 needs to be connected at this time. The main control board 13 receives a signal that the expansion board 14 needs to work, and powers the expansion board 14, so that the expansion board 14 enters the working state, and then uses this expansion board 14 to control the working state of the corresponding compressor connected in the energy storage air conditioner.

[0037] The technical solution of this embodiment, by setting a detection module, a dip switch, a main control board and at least one expansion board, when there are multiple compressors in the energy storage air conditioner, the corresponding compressors can be controlled through the expansion board, only one set of software system is needed, and there is no need to design additional software programs to control them separately. There are few software versions, and single-system and multi-system software are universal, which can be compatible with multiple configurations and detect multiple common signals. The energy storage air conditioner control system has strong versatility, and different configurations can be set through the dip switch, which saves design time and design cost and improves work efficiency.

[0038] On the basis of the above embodiment, optionally, the main control board 13 and at least one expansion board 14 are connected to each other by using a serial peripheral interface communication.

[0039] Specifically, the serial peripheral interface (SPI) occupies only four pins in the chip for control and data transmission, saving the number of chip pins, supporting high-speed communication, without start and stop bits, and simpler operation. The main control board 13 and at least one expansion board 14 are connected using SPI communication. The main control board 13 receives data from the expansion board 14 through SPI communication and controls the data output of the expansion board 14 through SPI communication.

[0040] Figure 3 Schematic diagram of the specific structure of an energy storage air conditioning control system provided according to an embodiment of the utility model. Figure 3As shown, the main control board 13 includes a first control module 131, a first communication module 132, a first switch input interface 133, a first analog input interface 134, a first switch output interface 135 and a first analog output interface 136; the detection module 11 includes a first detection switch 111 and a first sensor 112; the first control module 131 is connected to the dip switch 12, the first communication module 132, the first switch input interface 133, the first analog input interface 134, the first switch output interface 135 and the first analog output interface 136, the first switch input interface 133 is connected to the first detection switch 111, and the first The analog input interface 134 is connected to the first sensor 112; the first switch output interface 135 is connected to the first switch actuator 137 in the energy storage air conditioner, and the first analog output interface 136 is connected to the first analog actuator 138 in the energy storage air conditioner. The first control module 131 is used to control the first switch actuator 137 and the first analog actuator 138 in the energy storage air conditioner according to the dial signal, the state of the first detection switch 111 and the signal of the first sensor 112; the first control module 131 is also used to control the communication state of the first communication module 132 according to the dial signal; and / or, the expansion board 14 includes a second control module 141, a second communication module 142, a second switch input interface 143, a second analog input interface 144, a second switch output interface 145 and a second analog output interface 146; the detection module 11 includes a second detection switch 113 and a second sensor 114; the second control module 141 is connected to the dial switch 12, the second communication module 142, the second switch input interface 143, the second analog input interface 144, the second switch output interface 145 and the second analog output interface 146, the second switch input interface 143 is connected to the second detection switch 113, the second analog input interface 144 is connected to the second sensor 114 is connected; the second switch output interface 145 is connected to the second switch actuator 147 in the energy storage air conditioner, the second analog output interface 146 is connected to the second analog actuator 148 in the energy storage air conditioner, the second control module 141 is used to form a status signal according to the dial signal, the state of the second detection switch 113 and the signal of the second sensor 114, and control the communication state of the second communication module 142, the first control module 131 is also used to form a control signal according to the status signal, and the second control module 141 is also used to control the second switch actuator 147 and the second analog actuator 148 in the energy storage air conditioner according to the control signal.

[0041] In this embodiment, the first control unit 131 uses MCU to control the system. The first communication module 132 is connected to the first control unit 131, and uses a communication protocol to communicate with the expansion board 14 to exchange data with the expansion board 14 to achieve functional expansion of the main control board 13. Exemplarily, the first communication module 132 is connected to the expansion board through the SPI communication protocol. Switching quantity is the collection and output of discontinuous signals, and has two states of 0 and 1. Analog quantity is some continuously changing physical quantities, such as voltage, current and other signal quantities. An analog signal is a signal whose amplitude changes continuously over time. The first detection switch 111 is a switch for detecting circuit parameters and has a sensing function. Exemplarily, the first detection switch 111 includes a water immersion switch, a water level switch, a fan overload switch, a heating overload switch, a pressure switch, and a differential pressure switch. The first switch input interface 133 on the main control board 13 is connected to the first control module 131. The first switch input interface 133 is compatible with multiple pulse width modulation (PWM) signal detection ports, is connected to the first detection switch 111, receives the pulse width modulation signal output by the first detection switch 111, and detects the system operation status.

[0042] Figure 4 1 is a circuit diagram of a first switch input interface of an energy storage air conditioning control system provided according to an embodiment of the utility model. Figure 4 As shown, the working principle of the first switch input interface 133 is as follows: the first control module 131 is connected to the first optical coupler isolation circuit 41. The first optical coupler isolation circuit 41 has 13 switch input ports, namely DI1, DI2, DI3, DI4, DI5, DI6, DI7, DI8, DI9, DI10, DI11, DI12 and DI13, and can receive three signals, namely, a DC 12V PWM signal, a passive switch signal and a DC 12V level signal, all of which are started and stopped through the onboard relays of the main control board 13 and the expansion board 14. The onboard relay is a relay directly welded on the circuit board.

[0043] Figure 5 1 is a circuit diagram of a first switch output interface of an energy storage air conditioning control system provided according to an embodiment of the utility model. Figure 5As shown, the first switch output interface 135 corresponds to the first switch input interface 133. The working principle of the first switch output interface 135 is as follows: after the first control module 131 outputs a switch signal, the Darlington tube matrix chip 51 is used to control the start and stop of the relay coil. The first switch output interface 135 includes active and passive. When the first switch output interface 135 is active, the Darlington tube matrix chip 51 is connected to the normally open contacts of 7 relays, wherein the common end contact is connected to a DC 24V power supply. After the relay is actuated, the normally open contact outputs a DC 24V voltage; when the first switch output interface 135 is passive, the relay connected to the Darlington tube matrix chip 51 is a passive node, which includes a normally open and normally closed relay common end and an output normally open common end. When the first switch input interface 133 has a signal input, the first control module 131 controls the first switch output interface 135 to output a signal, so that the corresponding device is actuated. The first switch output interface 135 is connected to the first switch actuator 137 in the energy storage air conditioner. The first switch actuator 137 includes a fan, a water pump, a compressor, an electric heating belt, an electric humidifier, a solenoid valve and a fault alarm. Exemplarily, when the fan overload switch in the first detection switch 111 is closed, it indicates that the fan is overloaded. The overload signal is transmitted to the MCU through the first switch input interface 133. The MCU controls the first switch output interface 135 to output a control signal, control the fan to stop working, and issue a fault alarm to prompt the staff to perform inspection and maintenance. The first sensor 112 is used to detect temperature, voltage, etc., including a voltage sensor, a temperature sensor or a current transformer, etc.

[0044] Figure 6 1 is a circuit diagram of a first analog input interface of an energy storage air conditioning control system provided according to an embodiment of the utility model. Figure 6 As shown, the first analog input interface 134 is connected to the first sensor 112, and can detect the signal output by the voltage sensor, temperature sensor or current transformer. The working principle of the first analog input interface 134: AI1, AI2, AI3, AI4, AI5, AI6, AI7, AI8, AI9, AI10, AI11, AI12 and AI13 input interfaces are input to the first control module 131 through the resistor voltage divider circuit 71. The input interface is mainly connected to the NTC resistor and the DC 0-5V analog voltage, which is used in the detection of the temperature sensor and the voltage sensor. Exemplarily, the first analog input interface 134 can detect the DC 0-5V voltage signal output by the voltage sensor, the 0-200KΩ resistance output by the temperature sensor, and the built-in 5A / 2.5mA current sensor. The first analog actuator 138 in the energy storage air conditioner includes a fan, a water pump and other devices, which are connected to the first analog output interface 136.

[0045] Figure 71 is a circuit diagram of a first analog output interface of an energy storage air conditioning control system provided according to an embodiment of the utility model. Figure 7 As shown, the first analog output interface 136 can output a DC 0-10V voltage signal or a 5V / 12V PWM signal, which is generally a fan control signal for controlling the fan speed. The working principle of the first analog output interface 136: the analog voltage output by the first control module 131 is amplified by the operational amplifier 81, and a DC 0-10V analog voltage can be output through AO1 and AO2, a 5V PWM signal can be output through PO1, and a 12V PWM signal can be output through PO2. Exemplarily, the controllable first analog actuator 138 includes devices such as proportional water valves and DC water pumps that require a DC 0-10V voltage signal or a 5V / 12V PWM signal.

[0046] The main control board 13 also includes a first communication circuit 100, and the first communication circuit 100 includes 485 communication and CAN communication. Exemplarily, the first communication circuit 100 includes dynamic environment monitoring communication, group control, outdoor communication, inverter communication, temperature and humidity communication, electric meter communication, etc., wherein the group control is divided into line control and cloud control. The first control module 131 is connected to the 485 communication chip through an optocoupler isolation circuit as a dynamic environment monitoring and outdoor communication, internal and external machine communication interface. The first control module 131 is connected to the 485 communication chip as a inverter communication interface, and is connected to the CAN communication as a group control communication interface, and is connected to the SPI interface as SPI communication, which is mainly used for the main control board 13 to expand the master-slave communication of the dual system. The main control board 13 also includes a first EEV interface 10, which is used to drive the electronic expansion valve and control the opening of the electronic expansion valve. The electronic expansion valve is a throttling element that can adjust the refrigerant flow entering the refrigeration device according to a preset program, and is composed of a rotor, a stator, a valve core and a valve body. In the technical solution of this embodiment, the first control module 131 is used to control the first switch quantity actuator 137 and the first analog quantity actuator 138 in the energy storage air conditioner according to the dial signal, the state of the first detection switch 111 and the signal of the first sensor 112, and is also used to control the communication state of the first communication module 132 according to the dial signal. Exemplarily, when the first detection switch 111 detects that the heating overload switch is closed, indicating that the system is overheated, the first control module 131 receives the heating overload signal and transmits the signal to the first switch quantity actuator 137 to control the electric heater to stop working; when the temperature sensor in the first sensor 112 detects the temperature signal and transmits it to the first control module 131, when the temperature is too high, the first control module 131 controls the fan in the first analog quantity actuator 138 to stop working.

[0047] And / or it can be understood that there is both a main control board 13 and an expansion board 14 in the energy storage air conditioning control system 40, and the power required by the expansion board 14 is obtained through the SPI communication circuit, or the energy storage air conditioning control system 40 is a single system, only the main control board 13 exists, and the expansion board 14 is not required.

[0048] If there are two compressors in the energy storage air conditioner, a dual system is required for control. Compared with the single system, the dual system adds an expansion board 14. The expansion board 14 expands the load and corresponding functions of the second refrigeration system. When the expansion board 14 is used as the control board of the second system, the required power is obtained through the circuit of the first communication module 132 of the main control board 13. The dual systems use the same set of software control, and the model is selected through the dial switch 12. The second control unit 141 also uses MCU to control the system. The second communication module 142 is connected to the second control unit 141, and the communication protocol is selected to communicate with the main control board 13 to exchange data with the main control board 13. Exemplarily, the second communication module 142 is connected to the main control board 13 through the SPI communication protocol. The second detection switch 113 is a switch for detecting circuit parameters and has a sensing function. Exemplarily, the second detection switch 113 includes a fan speed, a fan overload switch, a pressure switch, and a differential pressure switch. The second switch input interface 143 on the expansion board 14 is connected to the second control module 141. The second switch input interface 143 is compatible with multiple PWM signal detection ports, connected to the second detection switch 113, receives the PWM signal output by the second detection switch 113, and detects the system operation status. The second switch output interface 145 corresponds to the second switch input interface 143. When the second switch input interface 143 has a signal input, the second control module 141 controls the second switch output interface 145 to output a signal to activate the corresponding device. The second switch output interface 145 is connected to the second switch actuator 147 in the energy storage air conditioner. The second switch actuator 147 includes a fan, a water pump, a compressor, an electric heating belt, an electric humidifier, a solenoid valve, and a fault alarm. Exemplarily, when the fan overload switch in the second detection switch 113 is closed, it indicates that the fan is overloaded, and the overload signal is transmitted to the MCU through the second switch input interface 143. The MCU controls the second switch output interface 145 to output a control signal, controls the fan to stop working, and issues a fault alarm to prompt the staff to perform maintenance. The second sensor 114 is used to detect temperature, voltage, etc., including a voltage sensor, a temperature sensor, or a current transformer. The second analog input interface 144 is connected to the second sensor 114 and can detect the signal output by the voltage sensor, the temperature sensor, or the current transformer. Exemplarily, the second analog input interface 144 can detect the DC 0-5V voltage signal output by the voltage sensor and the 0-200KΩ resistance output by the temperature sensor. The second analog actuator 148 in the energy storage air conditioner includes a fan, a water pump, and other devices, which are connected to the second analog output interface 146. The second analog output interface 146 can output a DC 0-10V voltage signal or a 5V / 12V PWM signal, which is generally a fan control signal for controlling the fan speed.Exemplarily, the controllable second analog actuator 148 includes a proportional water valve, a DC water pump, and other devices that require a DC 0-10V voltage signal or a 5V / 12V PWM signal. The expansion board 14 also includes a second communication circuit 200, and the second communication circuit 200 includes 485 communication and CAN communication. Exemplarily, the second communication circuit 200 includes dynamic environment monitoring communication, group control, outdoor communication, inverter communication, temperature and humidity communication, electric meter communication, etc. The expansion board 14 also includes a second EEV interface 20, which is used to drive the electronic expansion valve and control the opening of the electronic expansion valve. The second control module 141 is used to form a status signal according to the dial signal, the state of the second detection switch 113, and the signal of the second sensor 114, and control the communication state of the second communication module 142. When there are two compressors in the system, the transmission dial signal is set by the dial switch, and the second control module 141 controls the second communication module 142 to work, so that the expansion board 14 is connected to the main control board 13 after being powered. The first control module 131 is further used to form a control signal according to the state signal, and the second control module 141 is further used to control the second switch quantity actuator 147 and the second analog quantity actuator 148 in the energy storage air conditioner according to the control signal. The second switch quantity input interface 143, the second analog quantity input interface 144, the second switch quantity output interface 145 and the second analog quantity output interface 146 are respectively the same as the circuit structure diagrams of the first switch quantity input interface 133, the first analog quantity input interface 134, the first switch quantity output interface 135 and the first analog quantity output interface 136.

[0049] Based on the above embodiments, Figure 3 As shown, the main control board 13 also includes a first current detection module 139, which is connected to the first control module 131; the first current detection module 139 is used to detect the current on the first current line to be measured; and forms a first current signal to be output to the first control module 131, and the first control module 131 is also used to control the overcurrent protection actuator according to the first current signal; and / or, the expansion board 14 also includes a second current detection module 149, which is connected to the second control module 141; the second current detection module 149 is used to detect the current on the second current line to be measured; and forms a second current signal to be output to the second control module 141, and the second control module 141 is also used to control the overcurrent protection actuator according to the second current signal.

[0050] In this embodiment, exemplarily, the first current line to be measured is the power line of the compressor corresponding to the main control board 13, and the second current line to be measured is the power line of the compressor corresponding to the expansion board 14. The current on the first current line to be measured is the current flowing through the power line of the compressor corresponding to the main control board 13. The overcurrent protection actuator is a device that performs power-off protection when the current detection module detects a current overload. After the current signal is input into the main control board 13, it is rectified and filtered, and then the current is detected by the current transformer. The first current signal formed is output to the first control module 131, and the first control module 131 controls the overcurrent protection actuator according to the first current signal. Exemplarily, when the first current signal shows that the current is overloaded, the first control module 131 controls the overcurrent protection actuator to limit the current or power off the protection. The expansion board 14 includes a second current detection module 149, and the second current detection module 149, the current on the second current line to be measured, and the second current signal are respectively distinguished from the first current detection module 139, the current on the first current line to be measured, and the first current signal. The current on the second current line to be measured is the current flowing through the compressor power line corresponding to the expansion board 14. After the current signal is input into the expansion board 14, it is rectified and filtered, and then the current is detected by the current transformer, and the formed second current signal is output to the second control module 141, and the second control module 141 controls the overcurrent protection actuator according to the second current signal.

[0051] Based on the above embodiments, Figure 3 As shown, the main control board 13 also includes a first power input module 130; the first power input module 130 is connected to the power distribution unit 30 of the energy storage air conditioner; the expansion board 14 also includes a second power input module 140; the second power input module 140 is connected to the power distribution unit 30 through the main control board 13.

[0052] Figure 8 is a circuit structure diagram of a first power input module of an energy storage air conditioning control system provided according to an embodiment of the utility model, such as Figure 8 As shown, the first power input module 130 includes a first power input interface 1301 and a first auxiliary power supply 1302. After the first power input interface 1301 inputs the DC 24V power supply to the first auxiliary power supply 1302, it passes through the first rectifier filter circuit 1 (Note: the power supply of the main control board 13 is compatible with 18V AC power input), the power chip 2 is chopped, and the LC filter 3 is used to output a stable DC 12V power supply, which is passed through the first three-terminal voltage regulator chip 4 and the second three-terminal voltage regulator chip 5 to generate a stable +5V power supply and +3.3V power supply, respectively, to provide power to other electronic circuits in the main control board 13. The first three-terminal voltage regulator chip 4 and the second three-terminal voltage regulator chip 5 are 7805 and 1117M3-3.3 respectively.

[0053] Fig. 9is a circuit structure diagram of a second power input module of an energy storage air conditioning control system provided according to an embodiment of the utility model, such as Fig. 9 As shown, the second power input module 140 includes a second power input interface 1401 and a second auxiliary power supply 1402. After the second power input interface 1401 inputs the DC 24V power supply to the second auxiliary power supply 1402, it outputs a stable DC 12V power supply through the second rectifier and filter circuit 6, and then generates a stable +5V power supply and +3.3V power supply through the third three-terminal voltage regulator chip 7 and the fourth three-terminal voltage regulator chip 8 to provide power for other electronic circuits in the expansion board 14.

[0054] Fig.10 is a circuit structure diagram of a power detection module of a main control board of an energy storage air conditioning control system provided according to an embodiment of the utility model, such as Fig.10 As shown, the main control board 13 also includes a power supply detection module 60. After the three-phase electricity is connected to the main control board 13, the three-phase sine wave with a phase difference of 120° is converted into a 3.3V square wave with a phase difference of 120° through the second optical coupling isolation circuit 61 and given to the first control module 131 to check the phase sequence. The U and N lines are connected and converted into an AC current signal through a voltage transformer 62. After passing through the third rectifier and filter circuit 63, it is amplified by the operational amplifier 64 and given to the first control module 131 to detect the voltage.

[0055] In this embodiment, the first power input module 130 is connected to the power distribution unit 30 of the energy storage air conditioner and connected to a 24V DC power supply. The first power input module 130 includes a first power input interface 1301 and a first auxiliary power supply 1302. The first auxiliary power supply 1302 is connected to the first control unit 131 to supply power to the first control unit 131. The second power input module 140 exists in the expansion board 14. The main control board 13 is connected to the power distribution unit 30 to obtain power, and then the second power input module 140 is powered, so that the expansion board 14 is powered and works.

[0056] Fig.11 Schematic diagram of the structure of an energy storage air conditioner provided according to an embodiment of the utility model. Fig.11 As shown, the energy storage air conditioner includes an energy storage air conditioner control system 40. The energy storage air conditioner also includes a power distribution unit 30; the power distribution unit 30 adopts a three-phase four-wire system to connect with the three-phase load of the energy storage air conditioner, and is used to supply power to the three-phase load.

[0057] In this embodiment, the energy storage air conditioner includes a power distribution unit 30 and an energy storage air conditioner control system 40. The power distribution unit 30 adopts a three-phase four-wire system, in which three lines of the three-phase four-wire system represent three phases respectively, and the other is a ground wire. The power distribution scheme is compatible with the three-phase four-wire system and the three-phase five-wire system. There are only three-phase loads and DC loads, no single-phase loads, and no three-phase current imbalance. Exemplarily, the whole machine control system is incompatible with the power distribution scheme. The user end has a three-phase four-wire system of the TN-C system, a three-phase five-wire system of the TN-S system, and line voltages of AC380V and AC480V levels. The working voltage of some control switches and other devices is suitable for the AC380V three-phase five-wire system, and cannot be used in the AC480V three-phase five-wire system. The three-phase four-wire system requires three-phase balance to avoid safety hazards, resulting in the power distribution scheme being not universal. For example: the relay and contactor of AC220V control coil, while the fan is suitable for AC380V three-phase five-wire power supply system. When used in AC380V three-phase four-wire system, the current of each phase cannot be guaranteed to be consistent, which will cause three-phase imbalance. When used in AC480V three-phase five-wire system, the withstand voltage level of these devices cannot withstand this level of power supply voltage. This power distribution scheme is selected to use three-phase load to ensure the balance of three-phase current.

[0058] The technical solution of this embodiment designs an energy storage air conditioner, including a power distribution unit and an energy storage air conditioner control system. The power distribution unit adopts a three-phase four-wire system to be connected to the three-phase load of the energy storage air conditioner for supplying power to the three-phase load. There is no N line to ensure the balance of the three-phase current and solve the problem of incompatibility between the whole machine control system and the power distribution solution.

[0059] Based on the above embodiments, Fig.11 As shown, the three-phase load includes a compressor inverter 302, an EC fan 303 and a three-phase switching power supply 304; the compressor inverter 302 is connected to the compressor 305, the fan inverter 306 and the water pump inverter 307 of the energy storage air conditioner, and is used to supply power to the compressor 305, the fan inverter 306 and the water pump inverter 307; the three-phase switching power supply 304 is connected to the energy storage air conditioning control system 40, and is used to supply power to the energy storage air conditioning control system 40.

[0060] In this embodiment, the compressor inverter 302 is a device that uses the compressor speed and the change of the electronic expansion valve to control the refrigerant flow rate. The EC fan 303 is a centrifugal fan using a digital brushless DC outer rotor motor or a centrifugal fan using an EC motor. The EC motor is essentially a three-phase AC permanent magnet synchronous motor. The compressor 305 uses a variable frequency compressor. The DC power supply output by the compressor inverter 302 can power the compressor 305, the fan inverter 306 and the water pump inverter 307, and the DC 24V output by the three-phase switching power supply 304 powers the energy storage air conditioning control system 40, which can control the start and stop of the infusion pump, the radiator fan, and the electric heating contactor coil.

[0061] Based on the above embodiments, continue to quote Fig.11 As shown, the withstand voltage range of the AC power of the compressor inverter 302, the EC fan 303 and the three-phase switching power supply 304 is 323V to 552V.

[0062] In this embodiment, the three-phase balanced power distribution solution is applicable to the voltage range of AC323V to AC552V and the frequency of 50 / 60HZ, that is, it is compatible with the power supply system of AC380V±15% and AC480V±15%, realizing a wide range of power input. Exemplarily, a compressor inverter 302, an EC fan 303, a three-phase switching power supply 304, and a three-phase electric heating tube with a three-phase power input of AC323V~AC552V and a frequency of 50 / 60HZ are selected, and a fan inverter 306 and a water pump inverter 307 with a DC power output matching the compressor inverter 302 are selected. At the same time, the compressor inverter 302 outputs a DC power supply to power the fan inverter 306 or the water pump inverter 307, and the fan inverter 306 powers the AC fan to achieve stepless speed regulation of the AC fan from 0 to 50HZ. The water pump inverter 307 powers the AC water pump to achieve stepless speed regulation of the AC water pump from 0 to 50HZ. The DC 24V output by the three-phase switching power supply 304 powers the energy storage air conditioning control system 40. Exemplarily, the compressor inverter 302, the EC fan 303, and the three-phase switching power supply 304 are directly connected to a wide range of AC 323V~552V power supply, and other devices are not directly connected. The compressor inverter 302 and the EC fan 303 are an AC-DC-AC main circuit architecture. After selecting electronic devices such as varistors, rectifier bridges, capacitors, composite fully controlled voltage-driven power semiconductor devices or intelligent power modules with a sufficiently high voltage resistance range, they can adapt to a wide range of AC 323V~552V power supply; the three-phase switching power supply 304 is an AC-DC main circuit architecture. After selecting electronic devices such as varistors, rectifier bridges, capacitors with a sufficiently high voltage resistance range, they can meet the requirements of a wide power input range; the water pump inverter 307 and the fan inverter 306 are bus DC power supplies rectified by the connected compressor inverter 302, which belong to direct The AC-AC main circuit architecture can meet the requirements of a wide power input range by selecting electronic devices with a sufficiently high voltage resistance. During the operation of the inverter, under the AC 323V~552V power input, the inverter has an automatic voltage adjustment function to ensure that the voltage supplied to the AC fan, AC water pump and compressor 305 does not exceed its maximum operating value, thereby ensuring the safe operation of the devices. When the three-phase switching power supply 304 is in operation, under the AC 323V~552V power input, the power supply uses internal pulse width modulation to ensure that the output DC 24V voltage is constant. In the energy storage air conditioning control system 40, the main control board 13 is connected to the DC 24V power supply output by the three-phase switching power supply 304, and the expansion board 14 draws power from the main control board 13. The solenoid valve, the drive cooling fan, the electric heating tube contactor coil, etc. are all started and stopped through the onboard relays of the main control board 13 and the expansion board 14.

[0063] Based on the above embodiments, continue to quote Fig.11 As shown, the power distribution unit 30 includes a main switch 301, which is connected in series to a three-phase four-wire line.

[0064] In this embodiment, after the customer power passes through the main switch 301, the three-phase electricity is connected to each three-phase load: the compressor inverter 302, the EC fan 303, and the three-phase switching power supply 304. The EC fan and the AC fan controlled by the inverter in the condensing fan can be selected according to specific requirements.

[0065] Note that the above are only preferred embodiments of the present invention and the technical principles used. Those skilled in the art will understand that the present invention is not limited to the specific embodiments described herein, and that various obvious changes, readjustments and substitutions can be made by those skilled in the art without departing from the scope of protection of the present invention. Therefore, although the present invention is described in more detail through the above embodiments, the present invention is not limited to the above embodiments, and may include more other equivalent embodiments without departing from the concept of the present invention, and the scope of the present invention is determined by the scope of the appended claims.

Claims

1. An energy storage air conditioning control system, characterized in that: It includes a detection module, a DIP switch, a main control board and at least one expansion board; The detection module and the dip switch are connected to the main control board and the expansion board. The main control board is communicatively connected to at least one of the expansion boards. The main control board is used to control the working state of the correspondingly connected compressor in the energy storage air conditioner according to the first detection signal provided by the detection module and the dip signal provided by the dip switch. The expansion board is used to receive the second detection signal provided by the detection module according to the dip signal, and form a state signal according to the second detection signal; the main control board is also used to receive the state signal provided by the expansion board according to the dip signal, and form a control signal according to the state signal and output it to the expansion board; the expansion board is also used to control the working state of the correspondingly connected compressor in the energy storage air conditioner according to the control signal.

2. The energy storage air conditioning control system according to claim 1, characterized in that: The main control board and at least one of the expansion boards are connected by a serial peripheral interface communication.

3. The energy storage air conditioning control system according to claim 1, characterized in that: The main control board includes a first control module, a first communication module, a first switch input interface, a first analog input interface, a first switch output interface and a first analog output interface; the detection module includes a first detection switch and a first sensor; the first control module is connected to the dial switch, the first communication module, the first switch input interface, the first analog input interface, the first switch output interface and the first analog output interface, the first switch input interface is connected to the first detection switch, and the first analog input interface is connected to the first sensor; the first switch output interface is connected to the first switch actuator in the energy storage air conditioner, and the first analog output interface is connected to the first analog actuator in the energy storage air conditioner, and the first control module is used to control the first switch actuator and the first analog actuator in the energy storage air conditioner according to the dial signal, the state of the first detection switch and the signal of the first sensor; the first control module is also used to control the communication state of the first communication module according to the dial signal; And / or, the expansion board includes a second control module, a second communication module, a second switch input interface, a second analog input interface, a second switch output interface and a second analog output interface; the detection module includes a second detection switch and a second sensor; the second control module is connected to the dial switch, the second communication module, the second switch input interface, the second analog input interface, the second switch output interface and the second analog output interface, the second switch input interface is connected to the second detection switch, and the second analog input interface is connected to the second sensor; the second switch output interface is connected to the second switch actuator in the energy storage air conditioner, and the second analog output interface is connected to the second analog actuator in the energy storage air conditioner, the second control module is used to form the state signal according to the dial signal, the state of the second detection switch and the signal of the second sensor, and control the communication state of the second communication module, the first control module is also used to form the control signal according to the state signal, and the second control module is also used to control the second switch actuator and the second analog actuator in the energy storage air conditioner according to the control signal.

4. The energy storage air conditioning control system according to claim 3, characterized in that: The main control board also includes a first current detection module, which is connected to the first control module; the first current detection module is used to detect the current on the first current line to be measured; and form a first current signal to output to the first control module, and the first control module is also used to control the overcurrent protection actuator according to the first current signal; And / or, the expansion board also includes a second current detection module, which is connected to the second control module; the second current detection module is used to detect the current on the second current line to be measured; and form a second current signal to output to the second control module, and the second control module is also used to control the overcurrent protection actuator according to the second current signal.

5. The energy storage air conditioning control system according to claim 3, characterized in that: The main control board also includes a first power input module; the first power input module is connected to the power distribution unit of the energy storage air conditioner; the expansion board also includes a second power input module; the second power input module is connected to the power distribution unit through the main control board.

6. An energy storage air conditioner, characterized in that: It includes the energy storage air conditioning control system as described in any one of claims 1 to 5.

7. The energy storage air conditioner according to claim 6, characterized in that: It also includes a power distribution unit; the power distribution unit adopts a three-phase four-wire system to be connected to the three-phase load of the energy storage air conditioner, and is used to supply power to the three-phase load.

8. The energy storage air conditioner according to claim 7, characterized in that: The three-phase load includes a compressor inverter, an EC fan and a three-phase switching power supply; The compressor inverter is connected to the compressor, fan inverter and water pump inverter of the energy storage air conditioner, and is used to power the compressor, the fan inverter and the water pump inverter; the three-phase switching power supply is connected to the energy storage air conditioning control system, and is used to power the energy storage air conditioning control system.

9. The energy storage air conditioner according to claim 8, characterized in that: The withstand voltage range of the alternating current of the compressor inverter, the EC fan and the three-phase switching power supply is 323V to 552V.

10. The energy storage air conditioner according to claim 7, characterized in that: The power distribution unit comprises a main switch, and the main switch is connected in series to the three-phase four-wire line.

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