Electronically commutated motor, hvac system comprising the same, and method for signal conversion between hvac system and motor

Patent metadata

Field	Value
Publication number	US-2021381719-A1
Application number	US-202017126013-A
Country	US
Kind code	A1
Filing date	Dec 17, 2020
Priority date	May 8, 2020
Publication date	Dec 9, 2021
Grant date	—

Abstract

An ECM including a motor body and a motor controller. The motor body includes a stator assembly. The stator assembly includes a stator winding. The motor controller includes a control circuit board, and the control circuit board includes a power source, a microprocessor, an insulated-gate bipolar transistor (IGBT) inverter circuit, and a plurality of universal interface modules. The motor controller is configured to be connected to a main control board of a heating, ventilation, and air conditioning (HVAC) system, to receive a command from the HVAC system, and to control the operation of the motor body based on the command. The power source is configured to supply power to each electric circuit of the motor controller. The IGBT inverter circuit includes an output terminal; the stator winding includes a coil winding; and the output terminal is connected to the coil winding.

First claim

What is claimed is:

1 . A motor, comprising:
a motor body, the motor body comprising a housing, a stator assembly, and a rotor assembly, and the stator assembly comprising a stator winding; and a motor controller, the motor controller comprising a control circuit board, and the control circuit board comprising a power source, a microprocessor, an insulated-gate bipolar transistor (IGBT) inverter circuit, and a plurality of universal interface modules; wherein: the motor controller is configured to be connected to a main control board of a heating, ventilation, and air conditioning (HVAC) system, to receive a command from the HVAC system, and to control an operation of the motor body based on the command; the power source is configured to supply power to each electric circuit of the motor controller; the microcomputer is configured to control an operation of the IGBT inverter circuit; the IGBT inverter circuit comprises an output terminal; the stator winding comprises a coil winding; and the output terminal is connected to the coil winding; the plurality of universal interface modules comprises at least two types of modules selected from a multi-pin communication interface module, a multi-line communication interface module, a multi-position control interface module, and a pulse-width modulation (PWM) signal communication interface module; the HVAC system is configured to communicate with the microprocessor via at least one of the plurality of universal interface modules.

2 . The motor of claim 1 , wherein the multi-pin communication interface module is a 5-pin or a 16-pin communication interface module.

3 . The motor of claim 1 , wherein the multi-line communication interface module refers to a 4-line communication interface module.

4 . The motor of claim 1 , wherein the plurality of universal interface modules further comprise a Bluetooth module configured to provide communication between the microprocessor and the HVAC system.

5 . The motor of claim 1 , wherein the multi-position control interface module is a 5-position or 6-position control interface module.

6 . The motor of claim 1 , further comprising a multi-way terminal block connected to the plurality of universal interface modules.

7 . The motor of claim 6 , wherein the plurality of universal interface modules is connected to the multi-way terminal block via a plurality of connecting wires.

8 . The motor of claim 7 , wherein the motor controller further comprises a control box; the control box comprises a first side and a second side; the first side is connected to the housing, and the second side is provided with a junction box; the multi-way terminal block is disposed in the junction box.

9 . The motor of claim 8 , wherein the multi-way terminal block comprises a plurality of groups of terminals; each group of terminals is connected to one of the plurality of universal interface modules via the plurality of connecting wires; when in use, only one group of terminals communicates with one universal interface module; and a number of ways of each group of the terminals is equal to that of the connecting wires and to that of signals transmitted by the one universal interface module.

10 . The motor of claim 9 , wherein the multi-way terminal block comprises a first connection part and a second connection part; the first connection part is connected to the HVAC system through a plurality of second connecting wires, and the second connection part is connected to the motor controller through the plurality of connecting wires; the first connection part comprises a plurality of first connection bases configured to receive the second plurality of connecting wires, respectively; and the second connection part comprises a plurality of second connection bases configured to receive the first plurality of connecting wires, respectively.

11 . A HVAC system comprising a main control board and the motor of claim 1 , wherein the motor communicates with the main control board through the microprocessor of the motor controller.

12 . The system of claim 11 , wherein the motor comprises a multi-way terminal block connected to the plurality of universal interface modules; the plurality of universal interface modules is connected to the multi-way terminal block via a plurality of connecting wires; and the main control board is connected to the multi-way terminal block via a plurality of second connecting wires.

13 . A method of signal conversion between a main control board of a HVAC system and a motor of claim 1 , the motor comprising a multi-way terminal block connected to the plurality of universal interface modules; the method comprising:
1) transmitting a communication signal from the main control board of the HVAC system; 2) transmitting the communication signal from the main control board to the multi-way terminal block via a plurality of second communication wires; 3) transmitting the communication signal from the multi-way terminal block to the motor controller via a plurality of first communication wires; and 4) identifying, by the motor controller, the communication signal; selecting one universal interface module from the plurality of universal interface modules and a signal switching circuit matching the communication signal; converting the communication signal by the signal switching circuit and transmitting to the microprocessor; processing the communication signal converted by the microprocessor and outputting a control signal through a motor interface circuit to the motor body, so that the motor body operates compatibly with the communication signal transmitted from the HVAC system.

Assignees

• Zhongshan Broad Ocean Motor Co

Inventors

• Bian Wenqing
• Xue Juezhi

Classifications

• F24F11/89

  Arrangement or mounting of control or safety devices · CPC title

• F24F11/88 Primary

  Electrical aspects, e.g. circuits · CPC title

• H02K11/33

  Drive circuits, e.g. power electronics (H02K11/38 takes precedence) · CPC title

• H02P6/16

  Circuit arrangements for detecting position · CPC title

• F24F11/72

  for controlling the supply of treated air, e.g. its pressure · CPC title