Electric control device and air conditioning system
By combining power supply and communication through PowerBus technology, the problem of complex wiring in air conditioning systems is solved, stable and reliable power and data transmission are achieved, and construction costs and the probability of wiring errors are reduced.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- NANJING TICA AIR CONDITIONING CO LTD
- Filing Date
- 2025-04-27
- Publication Date
- 2026-06-05
AI Technical Summary
The power supply and communication between devices in an air conditioning system require multiple cables and wiring space, which leads to complex wiring and easy misconnection, resulting in economic losses and wasted time.
The PowerBus power supply bus technology is adopted to combine the power supply line and the signal line into one. Power supply and communication are realized through the connection between the power control board and the load control board, which reduces the amount of wiring and lowers the construction cost.
It enables simultaneous transmission of power and data, reduces wiring difficulty and construction costs, improves system reliability and intelligence, and reduces the probability of wiring errors.
Smart Images
Figure CN224327330U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of air conditioning technology, and in particular to an electronic control device and an air conditioning system. Background Technology
[0002] In related technologies, air conditioning system equipment is usually powered by power lines and communicated by communication lines. This results in air conditioning systems requiring more cables and wiring space. At the same time, the wiring is complicated during installation, which can easily lead to misconnection of communication lines and power lines, causing economic losses and wasted time. Utility Model Content
[0003] This utility model provides an electronic control device and an air conditioning system to solve at least one of the above-mentioned technical problems.
[0004] This utility model provides an electrical control device for connecting to an external load. The electrical control device includes a power control board and a load control board. The load control board is connected to the power control board. The power control board is used to connect to the external load so that the power control board supplies power to the external load and enables the load control board to communicate with the external load through the power control board.
[0005] The aforementioned electrical control device connects the power control board to the external load, enabling the power control board to supply power to the external load and the load control board to communicate with the external load through the power control board. This allows the electrical control device to supply power and communicate with the external load, reducing wiring, wiring difficulty, and construction costs.
[0006] In some embodiments, the electronic control device includes a communication circuit, the load control board includes a load control circuit, the power control board includes a power supply circuit, a power transistor switching circuit, and a power communication bus interface, the power supply circuit includes a power supply and protection circuit, the power supply and protection circuit is connected to the power transistor switching circuit, and the power communication bus interface is connected to the power transistor switching circuit, the load control circuit, and the external load;
[0007] The power control board is used to enable the power supply and protection circuit to supply power to the external load when the power transistor switching circuit is working, and to enable the load control circuit to communicate with the external load through the power control board when the power transistor switching circuit and the communication circuit are working together.
[0008] In some embodiments, the electronic control device includes a microcontroller circuit connected to the power transistor switching circuit and the communication circuit. The microcontroller circuit is used to enable the power transistor switching circuit and the communication circuit to operate in a time-sharing manner to supply power to the external load and communicate with the external load.
[0009] In some implementations, the power communication bus interface is also connected to the microcontroller circuit so that the microcontroller circuit can obtain the current operating status.
[0010] In some implementations, the microcontroller circuit is connected to the load control circuit to transmit communication signals from the external load.
[0011] In some embodiments, the power supply circuit further includes a chip power supply circuit, the power supply and protection circuit is connected to the chip power supply circuit, and the chip power supply circuit is connected to the microcontroller circuit, so that the voltage output by the power supply and protection circuit is reduced to the voltage required by the microcontroller circuit and power is supplied to the microcontroller circuit.
[0012] In some embodiments, the electronic control device further includes a drive amplifier circuit connected to the power communication bus interface and the communication circuit. The drive amplifier circuit is used to receive and amplify the communication signal of the external load of the power communication bus interface and transmit it to the communication circuit.
[0013] In some embodiments, the power control board includes a fixed protrusion, the load control board has a slot, the fixed protrusion is engaged in the slot, the fixed protrusion has solder pads, and the fixed protrusion is connected to the circuit board of the load control circuit by soldering.
[0014] In some embodiments, the electronic control device includes a pin header connector, which includes pin headers and a bracket. The pin headers are fixed on the pin header bracket and are bent to connect the power control board and the load control board.
[0015] An air conditioning system provided by this utility model includes the electronic control device described in any of the above embodiments.
[0016] In the aforementioned air conditioning system, the power control board is connected to the external load, enabling the power control board to supply power to the external load and the load control board to communicate with the external load through the power control board. This allows the electrical control device to supply power and communicate with the external load, reducing wiring, wiring difficulty, and construction costs.
[0017] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description
[0018] The above and / or additional aspects and advantages of this invention will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:
[0019] Figure 1 This is a schematic diagram of the circuit structure of the electronic control device according to an embodiment of the present invention;
[0020] Figure 2 This is a schematic diagram of the structure of the electronic control device according to an embodiment of the present utility model;
[0021] Figure 3 This is a schematic diagram of the power control board and pin header connector according to an embodiment of the present invention.
[0022] Explanation of key component symbols:
[0023] Power supply and protection circuit 10, power transistor switching circuit 20, power communication bus interface 30, micro control circuit 40, drive amplifier circuit 50, chip power supply circuit 60, communication circuit 70, power control board 100, fixed protrusion 102, load control board 200, pin header connector 300, and electrical control device 1000. Detailed Implementation
[0024] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.
[0025] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," and "counterclockwise," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description. They do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.
[0026] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection. They can refer to a mechanical connection or an electrical connection. They can refer to a direct connection or an indirect connection through an intermediate medium, and they can refer to the internal communication of two components or the interaction between two components. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood according to the specific circumstances.
[0027] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.
[0028] This disclosure provides many different embodiments or examples for implementing various structures of the present invention. To simplify the disclosure, specific examples of components and arrangements are described herein. These are merely examples and are not intended to limit the scope of the invention. Furthermore, reference numerals and / or letters may be repeated in different examples; such repetition is for simplification and clarity and does not in itself indicate a relationship between the various embodiments and / or arrangements discussed. In addition, examples of various specific processes and materials are provided in this invention; however, those skilled in the art will recognize the application of other processes and / or the use of other materials.
[0029] In related technologies, air conditioning system devices typically use independent power lines for power supply and independent communication lines for communication, such as CAN and RS485. This helps enhance anti-interference capabilities; however, it means that the air conditioning system requires more cabling and wiring space. For long-distance transmission, shielded twisted-pair cables are also required.
[0030] Furthermore, the aforementioned communication scheme requires terminal resistor matching. Also, due to its lack of polarity, reverse connection during actual construction can cause significant economic losses and wasted time. Therefore, the technology of simultaneous power and data transmission offers substantial advantages.
[0031] The technology of transmitting power and data simultaneously allows communication to occur while power is supplied through the power line, without the need for additional communication lines. Examples include PLC (Programmable Logic Controller), which uses modulation technology to modulate user data, loading high-frequency signals carrying information onto the current, and then transmitting it over the power line. Another example is PoE (Power over Ethernet), which uses twisted-pair cables to transmit power and data to devices in an Ethernet network.
[0032] The two communication schemes mentioned above also have the advantage of being non-polarized. However, power line communication requires a power bus, which necessitates a dedicated control IC (Integrated Circuit), as well as dedicated coupling and decoupling circuits, resulting in high costs. PoE technology separates DC power and data signals for transmission, and its current power transmission capability is only a few tens of watts, resulting in low transmission power. MDV-link technology uses time-division control to achieve precise time-division transmission of power and signals, but communication line current detection requires additional current sampling circuitry, increasing costs.
[0033] Please see Figure 1 and Figure 2 This utility model provides an electrical control device 1000, which is used to connect to an external load. The electrical control device 1000 includes a power control board 100 and a load control board 200. The load control board 200 is connected to the power control board 100. The power control board 100 is used to connect to an external load so that the power control board 100 supplies power to the external load and enables the load control board 200 to communicate with the external load through the power control board 100.
[0034] The aforementioned electrical control device 1000 and power control board 100 are connected to an external load, enabling the power control board 100 to supply power to the external load and the load control board 200 to communicate with the external load through the power control board 100. This achieves power supply and communication between the electrical control device 1000 and the external load, reducing wiring, wiring difficulty, and construction costs.
[0035] Specifically, PowerBus is a low-voltage DC carrier power supply bus chip technology that combines power and signal lines into one, allowing both signals and power to share a single bus. PowerBus wiring has no polarity requirements and supports any topology, including star, tree, and bus topologies, significantly reducing the probability of wiring errors during installation and allowing for more flexible cabling layouts. While enabling simultaneous power and data transmission, PowerBus also features high power, low cost, and no need for terminating resistors, facilitating the design, installation, and maintenance of air conditioning systems.
[0036] The power control board 100 and the load control board 200 are interconnected. The power control board 100 is connected to an external load via the PowerBus power supply bus, enabling the power control board 100 to supply power to the external load via the PowerBus power supply bus. At the same time, the power control board 100 can interact with the external load. The communication data is demodulated by the power control board 100 and transmitted to the load control board 200. The load control board 200 transmits the feedback communication data back to the power control board 100, and the power control board 100 modulates the communication data onto the power signal, realizing communication with the external load via the PowerBus power supply bus.
[0037] Optionally, in one embodiment, the electronic control device 1000 is installed in the indoor unit of the air conditioning system, the external load is the outdoor unit of the air conditioning system, the power control board 100 can supply power to the outdoor unit through the PowerBus power supply bus, and the load control board 200 can communicate with the outdoor unit through the power control board 100, thereby controlling the working status of the outdoor unit.
[0038] Optionally, the external load may include an indoor unit, an outdoor unit, or auxiliary equipment, etc.
[0039] In some embodiments, the electronic control device 1000 includes a communication circuit 70, the load control board 200 includes a load control circuit, and the power control board 100 includes a power supply circuit, a power transistor switching circuit 20, and a power communication bus interface 30. The power supply circuit includes a power supply and protection circuit 10, which is connected to the power transistor switching circuit 20. The power communication bus interface 30 is connected to the power transistor switching circuit 20, the load control circuit, and an external load.
[0040] The power control board 100 is used to enable the power supply and protection circuit 10 to supply power to the external load when the power transistor switching circuit 20 is working, and to enable the load control circuit to communicate with the external load through the power control board 100 when the power transistor switching circuit 20 and the communication circuit 70 are working together.
[0041] In this way, the connection between power and communication lines can be realized through the power communication bus interface 30.
[0042] Specifically, the power supply circuit in the power control board 100 is connected to the power transistor switching circuit 20, and the power communication bus interface 30 enables the power supply circuit to supply power to the external load when the power transistor switching circuit 20 is working. This ensures that the external load can obtain a stable power supply. When the power transistor switching circuit 20 is in working state, the power supply circuit can transfer electrical energy to the external load to meet the load's power demand, ensure that the load can operate normally, and realize the basic function of supplying power to the external load.
[0043] When the power transistor switching circuit 20 and the communication circuit 70 work together, the load control circuit can communicate with the external load through the power control board 100, thereby realizing communication functions such as control and monitoring of the external load. Thus, the load control board 200 can send commands to the external load to adjust its operating state, or obtain status information from the external load, thereby enhancing the controllability and intelligence of the air conditioning system.
[0044] In some embodiments, the electronic control device 1000 includes a microcontroller circuit 40 connected to a power transistor switching circuit 20 and a communication circuit 70. The microcontroller circuit 40 is used to enable the power transistor switching circuit 20 and the communication circuit 70 to operate in a time-sharing manner to supply power to an external load and communicate with the external load.
[0045] In this way, stable power transmission and accurate and reliable communication can be achieved.
[0046] Specifically, the microcontroller circuit 40 enables the power transistor switching circuit 20 and the communication circuit 70 to operate in a time-sharing manner. Since the PowerBus bus uses the same physical medium for both power and data transmission, the time-sharing operation of the power transistor switching circuit 20 and the communication circuit 70 by the microcontroller circuit 40 avoids mutual interference between power supply and communication signals. This ensures stable power transmission while guaranteeing the accuracy and reliability of communication. For example, when the power transistor switching circuit 20 supplies power to an external load, the communication circuit 70 pauses operation, avoiding the impact of large current changes on the communication signal. During communication, the power transistor switching circuit 20 is in a relatively stable state, providing a good electrical environment for communication.
[0047] In some implementations, the power communication bus interface 30 is also connected to the microcontroller circuit 40 so that the microcontroller circuit 40 can obtain the current operating status.
[0048] In this way, the current operating status of the PowerBus bus can be obtained in real time.
[0049] Specifically, the microcontroller circuit 40 can obtain the current operating status of the system in real time through the power communication bus interface 30. This includes the on / off status of the power transistor switching circuit 20, the power supply parameters of the power supply circuit (such as voltage and current), and the communication status of the communication circuit 70 (such as whether data is being transmitted and whether the transmission is normal).
[0050] The power communication bus interface 30 inputs the operating status of the PowerBus bus, i.e., whether it is in power supply or communication state, to the microcontroller circuit 40 through the signal line. When the communication state is input, the microcontroller circuit 40 demodulates the communication signal and communicates with the load control circuit through the signal line. The demodulated signal is received by the microcontroller circuit through the signal line.
[0051] In addition, the power communication bus interface 30 transmits the operating status to the microcontroller circuit 40, enabling the microcontroller circuit 40 to detect abnormalities in the system in a timely manner. For example, when the operating status of the power transistor switching circuit 20 is abnormal, such as abnormal switching frequency or excessive current, the microcontroller circuit 40 can respond quickly and take protective measures, such as cutting off the power supply and issuing an alarm, to prevent the fault from escalating further and improve the reliability of the system.
[0052] In some implementations, the microcontroller circuit 40 is connected to the load control circuit to transmit communication signals from an external load.
[0053] In this way, communication between the power control board 100 and the load control board 200 can be achieved.
[0054] Specifically, the microcontroller circuit 40 typically possesses strong data processing and computational capabilities. When connected to the load control circuit and receiving communication signals from external loads, it can centrally process and analyze these signals. Through connection with the load control circuit, the microcontroller circuit 40 can integrate communication signals from different external loads, enabling unified management and sharing of dispersed information. This helps improve the overall operating efficiency and synergy of the system.
[0055] like Figure 1 As shown, in the communication state, the microcontroller circuit 40 demodulates the communication signal simultaneously. At the same time, the microcontroller circuit 40 communicates with the external circuit through the signal line TX, receives the signal from the external circuit through the signal line RX, and indicates the preemption state to the external circuit through the signal line SS.
[0056] In some embodiments, the power supply circuit further includes a chip power supply circuit 60, the power supply and protection circuit 10 is connected to the chip power supply circuit 60, and the chip power supply circuit 60 is connected to the microcontroller circuit 40 so that the voltage output by the power supply and protection circuit 10 is reduced to the voltage required by the microcontroller circuit 40 and power is supplied to the microcontroller circuit 40.
[0057] In this way, a stable voltage input can be provided for the microcontroller circuit 40.
[0058] Specifically, the microcontroller circuit 40 typically requires a specific low voltage to operate stably. The chip power supply circuit 60 can reduce the voltage output by the power supply and protection circuit 10 to a suitable voltage value required by the microcontroller circuit 40. For example, if the power supply and protection circuit 10 outputs 24V and the microcontroller circuit 40 operates at 3.3V or 5V, the chip power supply circuit 60 can perform voltage conversion to provide a stable and suitable operating voltage for the microcontroller circuit 40, ensuring its normal operation.
[0059] The chip power supply circuit 60 can filter and regulate the voltage output by the power supply and protection circuit 10, reducing voltage fluctuations and noise interference. Stable power supply can avoid problems such as program running errors and data loss caused by voltage fluctuations, thus improving the reliability and stability of the microcontroller circuit 40.
[0060] In some embodiments, the electronic control device 1000 further includes a drive amplifier circuit 50, which is connected to the power communication bus interface 30 and the communication circuit 70. The drive amplifier circuit 50 is used to receive and amplify the communication signal of the external load of the power communication bus interface 30 and transmit it to the communication circuit 70.
[0061] This increases the driving capability of the power control board 100 during long-distance communication.
[0062] Specifically, the communication signals transmitted from external loads via the power communication bus interface 30 may be weakened during transmission due to factors such as line loss and interference. The drive amplifier circuit 50 can amplify these weak signals to a strength level that the communication circuit 70 can reliably recognize and process. For example, when the external load is located far away, the signal may attenuate when it reaches the power communication bus interface 30. The drive amplifier circuit 50 can effectively compensate for the attenuation and ensure the stability of communication.
[0063] In addition to enhancing signal strength, the drive amplifier circuit 50 can also perform signal shaping and filtering. By removing noise and interference components from the signal, the waveform is made more regular, thereby improving signal quality and reliability. Since power and data are transmitted on the same line in PowerBus technology, power signals may interfere with communication signals. The drive amplifier circuit 50 can effectively suppress interference, thus ensuring accurate transmission of communication data.
[0064] In summary, as Figure 1 As shown, the power control board 100 includes a power supply and protection circuit 10, a power transistor switching circuit 20, a power communication bus interface 30, a microcontroller circuit 40, a driver amplifier circuit 50, a chip power supply circuit 60, and a communication circuit 70. The load control board 200 is connected to the power control board 100 and supplies power to the power supply and protection circuit 10, which provides power voltage and performs circuit protection. The power transistor switching circuit 20 switches the power transistors on and off to modulate the power supply level on the PowerBus bus. The power communication bus interface 30 connects to the PowerBus bus and, through time-division control, simultaneously acts as a power line and signal line, enabling power supply to external loads and signal transmission and reception.
[0065] The microcontroller circuit 40 is used to control and detect signals and implement logic algorithms. The chip power supply circuit 60 is used to provide the voltage required by the chip. The communication circuit 70 is used to modulate control signals on the PowerBus bus.
[0066] The power supply and protection circuit 10 is connected to the external circuit via the power line VCC. The power tube switching circuit 20 and the chip power supply circuit 60 are connected via the power line VCC. The power tube switching circuit 20 is connected to the power communication bus interface 30 via the power line L1. The power communication bus interface 30 is connected to the microcontroller circuit 40 via the signal line L3 and to the load control circuit via the power line P.
[0067] The microcontroller circuit 40 is connected to the power transistor switching circuit 20 via signal line CH, to the communication circuit 70 via signal lines CM and CL, and to the load control circuit via signal lines TX, RX, and SS. The drive amplifier circuit 50 is connected to the power communication bus interface 30 via signal line L2. The chip power supply circuit 60 is connected to the microcontroller circuit 40 via power line VCC2, and the communication circuit 70 is connected to the drive amplifier circuit 50 via signal line L4.
[0068] When the circuit is operating normally, the power supply and protection circuit 10 provides the power supply voltage VCC1, and the chip power supply circuit 60 steps down the high input power supply voltage VCC1 to the power supply voltage VCC2 required by the microcontroller circuit 40. The microcontroller circuit 40 controls the power transistor switching circuit 20 through signal line CH, and controls the communication circuit 70 through signal lines CM and CL. The power transistor switching circuit 20 and the communication circuit 70 are time-division controlled, and they are turned on in a time-division manner to modulate the power supply level and communication level on the PowerBus bus.
[0069] When the power supply level is modulated, that is, when the microcontroller circuit 40 controls the power transistor to turn on via signal line CH, the power supply voltage VCC1 is modulated into the power supply signal L1 on the PowerBus bus via the power transistor. At this time, the microcontroller circuit 40 controls the communication circuit 70 to not work via signal lines CM and CL. When the communication level is modulated, that is, when the microcontroller circuit 40 controls the communication circuit 70 to work via signal lines CM and CL, CL controls the communication processing circuit 70 to work. In this case, signal line CM controls the communication circuit 70 to turn on and modulate the communication high level, and signal line CL obtains the communication low level by voltage division in the form of series resistors. The two are combined to form the communication signal L4, and then the driving capability is enhanced by the drive amplifier circuit 50 to modulate into the communication signal L2 on the PowerBus bus. L1 and L2 are combined to realize the power control function, that is, to transmit data while supplying power on the power line.
[0070] The PowerBus interacts with the external load via power line P. The PowerBus inputs its operating status (power supply or communication state) to the microcontroller 40 via signal line L3. When the communication state is input, the microcontroller 40 simultaneously demodulates the communication signal. Simultaneously, the microcontroller 40 communicates the demodulated signal with the external circuit via signal line TX, receives signals from the external circuit via signal line RX, and indicates the preemption state to the external circuit via signal line SS.
[0071] In some embodiments, the power control board 100 includes a fixing protrusion 102, the load control board 200 has a slot, the fixing protrusion 102 is engaged in the slot, the fixing protrusion 102 is provided with solder pads, and the fixing protrusion 102 is connected to the circuit board of the load control circuit by soldering.
[0072] In this way, a stable and reliable fixed connection can be achieved between the power control board 100 and the load control board 200.
[0073] Specifically, the power control board 100 is connected to the external circuit board as a plug-in. The power control board 100 includes a fixing protrusion 102. The load control board 200 has a slot. The fixing protrusion 102 is snapped into the slot. The fixing protrusion 102 is covered with solder pads on both sides for connection and soldering.
[0074] The fixed protrusion 102 is engaged in the slot, providing a stable mechanical fixation for the power control board 100 and the load control board 200. It can effectively resist the influence of external forces such as vibration and impact, ensuring that the two control boards maintain their relative positions in complex working environments. It can prevent the control boards from loosening due to vibration and avoid failures caused by unstable connection.
[0075] The use of a slot and a fixing protrusion 102 simplifies the installation process of the power control board 100 and the load control board 200. During installation, simply align the fixing protrusion 102 with the slot and insert it for positioning, then secure it by welding. When maintenance or component replacement is required, the two control boards can be separated relatively easily, reducing maintenance time and costs and improving system maintainability.
[0076] In some embodiments, the electronic control device 1000 includes a pin header connector 300, which includes pin headers and a bracket. The pin headers are fixed on the pin header bracket and are bent to connect the power control board 100 and the load control board 200.
[0077] In this way, the pin header connector 300 can be fixed to the power control board 100, enhancing the vibration resistance of the electronic control device 1000.
[0078] Specifically, the electronic control device 1000 includes a pin header connector 300, which is used in conjunction with the connection method of the power control board 100 and the load control board 200. The pin header connector 300 is a bent pin header connector 300. The bent pin header connects the electronic control device 1000 and the circuit board of the load control circuit, connecting the internal power lines and signal lines to the external circuit board. Through the connection design at the pins and slots, the vibration resistance of the electronic control device 1000 is enhanced.
[0079] In one implementation, such as Figure 2 and Figure 3 As shown, the bendable plug has 8 pins in row 1. The pin connection instructions are as follows: pin 1 is reserved for backup, pin 2 is connected to power line VCC0, pin 3 is connected to power line P, pins 4 and 8 are grounded, pin 5 is connected to signal line RX, pin 6 is connected to signal line TX, and pin 7 is connected to signal line SS.
[0080] In summary, the electrical control device 1000 provided by the embodiments of this utility model is based on PowerBus power supply bus technology and designs a power control circuit for bus communication, used to modulate PowerBus bus signals, including power and communication signals. Using PowerBus bus for communication helps solve wiring errors caused by wiring in the air conditioning field. Furthermore, it can reduce the amount of wiring and lower construction costs.
[0081] In addition, compared with commonly used bus forms such as RS485 and CAN, PowerBus technology has greater anti-interference capabilities, can run on the same mains power, has a longer communication distance, can be used in any topology, and does not require terminating resistors, which helps to meet a wider range of application scenarios.
[0082] Meanwhile, compared to existing designs that place the PowerBus circuit and load control circuit on the same circuit board, the power control device 1000 provided in this embodiment of the invention designs the power control board 100 as a plug-in type. The power control board 100 and the load control board 200 are connected by plug-in, which facilitates modular installation, simplifies the circuit design and wiring of each module, and increases the convenience and speed of installation. Furthermore, the connection design at the pins and slots enhances the vibration resistance of the power control device 1000.
[0083] Furthermore, placing the power control circuit on a separate circuit board helps save external circuit board space, makes better use of vertical space, provides more options for the installation of the control box and external structure, and offers a solution to the problem of insufficient external circuit board space.
[0084] An air conditioning system provided by this utility model includes an electronic control device 1000 according to any of the above embodiments.
[0085] In the aforementioned air conditioning system, the power control board 100 is connected to the external load, enabling the power control board 100 to supply power to the external load and the load control board 200 to communicate with the external load through the power control board 100. This allows the electrical control device 1000 to supply power to and communicate with the external load, reducing wiring, wiring difficulty, and construction costs.
[0086] Specifically, air conditioning systems include, but are not limited to, split-type air conditioners, central air conditioning systems, multi-split systems, and so on.
[0087] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with an embodiment or example is included in at least one embodiment or example of this utility model. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.
[0088] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.
Claims
1. An electronic control device, characterized in that, The electronic control device is used to connect to an external load. The electronic control device includes a power control board and a load control board. The load control board is connected to the power control board. The power control board is used to connect to the external load so that the power control board supplies power to the external load and enables the load control board to communicate with the external load through the power control board.
2. The electronic control device according to claim 1, characterized in that, The electronic control device includes a communication circuit, the load control board includes a load control circuit, the power control board includes a power supply circuit, a power transistor switching circuit and a power communication bus interface, the power supply circuit includes a power supply and protection circuit, the power supply and protection circuit is connected to the power transistor switching circuit, and the power communication bus interface is connected to the power transistor switching circuit, the load control circuit and the external load; The power control board is used to enable the power supply and protection circuit to supply power to the external load when the power transistor switching circuit is working, and to enable the load control circuit to communicate with the external load through the power control board when the power transistor switching circuit and the communication circuit are working together.
3. The electronic control device according to claim 2, characterized in that, The electronic control device includes a microcontroller circuit, which is connected to the power transistor switching circuit and the communication circuit. The microcontroller circuit is used to enable the power transistor switching circuit and the communication circuit to operate in a time-sharing manner, so as to supply power to the external load and communicate with the external load.
4. The electronic control device according to claim 3, characterized in that, The power communication bus interface is also connected to the microcontroller circuit so that the microcontroller circuit can obtain the current operating status.
5. The electronic control device according to claim 3, characterized in that, The microcontroller circuit is connected to the load control circuit to transmit communication signals from the external load.
6. The electronic control device according to claim 3, characterized in that, The power supply circuit also includes a chip power supply circuit. The power supply and protection circuit is connected to the chip power supply circuit, and the chip power supply circuit is connected to the microcontroller circuit, so that the voltage output by the power supply and protection circuit drops to the voltage required by the microcontroller circuit and supplies power to the microcontroller circuit.
7. The electronic control device according to claim 3, characterized in that, The electronic control device further includes a drive amplifier circuit, which is connected to the power communication bus interface and the communication circuit. The drive amplifier circuit is used to receive and amplify the communication signal of the external load of the power communication bus interface and transmit it to the communication circuit.
8. The electronic control device according to claim 2, characterized in that, The power control board includes a fixed protrusion, the load control board has a slot, the fixed protrusion is engaged in the slot, the fixed protrusion has a solder pad, and the fixed protrusion is connected to the circuit board of the load control circuit by soldering.
9. The electronic control device according to claim 8, characterized in that, The electronic control device includes a pin header connector, which includes pin headers and a bracket. The pin headers are fixed on the pin header bracket and are bent to connect the power control board and the load control board.
10. An air conditioning system, characterized in that, Includes the electronic control device as described in any one of claims 1-9.