A motor controller for a stationary air conditioner

Abstract

The utility model discloses a kind of motor controllers for parking air conditioner, including circuit board main body, the circuit board main body includes power supply and signal interface, including power supply interface, VSP interface and FG interface;Y capacitor installation position, for selectively welding Y capacitor or 0 ohm resistance;Standard burning interface, including 3.3V power supply end, GND ground end, CLK clock signal end and SW serial data end;Electronic product coding bit;The first soldering point, second soldering point, third soldering point and fourth soldering point are equipped on the circuit board main body;The first hall sensor, second hall sensor and third hall sensor are equipped on the circuit board main body;Through hole is equipped on the circuit board main body;Temperature sampling resistance is equipped on the circuit board main body;Sampling resistance is equipped on the circuit board main body.The utility model discloses a kind of motor controllers for parking air conditioner, to solve the problem proposed in background art.

Description

Technical Field

[0001] This utility model belongs to the technical field of parking air conditioner motor controllers, specifically relating to a motor controller for parking air conditioners. Background Technology

[0002] In the field of parking air conditioning, the motor controller is a core component, and its performance and adaptability directly affect the operating effect and stability of the parking air conditioner. Existing parking air conditioning motor controllers have several shortcomings: Firstly, the electromagnetic compatibility design lacks flexibility. Some controllers are not optimized for different electromagnetic environment requirements. If the application environment has high electromagnetic compatibility requirements, the controller needs to be redesigned and developed, which increases the cost of repeated development. Secondly, maintenance is inconvenient. The layout and soldering method of some controllers are unreasonable. When repairing or replacing them later, many parts need to be disassembled, which is time-consuming, labor-intensive, and has high maintenance costs. Third, it lacks functional integration and debugging convenience, lacks a standard programming interface and flexible speed adjustment mode selection, making it inconvenient for software updates, parameter calibration and fault diagnosis, and also difficult to be compatible with different host computer control systems. Utility Model Content

[0003] The main objective of this invention is to provide a motor controller for a parking air conditioner to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, this utility model provides a motor controller for a parking air conditioner, comprising a circuit board body. The circuit board body integrates a power and signal interface, a Y-capacitor mounting position, a standard programming interface, and an electronic product code bit, wherein: The power and signal interfaces include a power interface, a VSP interface, and an FG interface; The Y capacitor mounting position is used for selectively soldering Y capacitors or 0-ohm resistors. When soldering Y capacitors, it is used to suppress common-mode noise, and when soldering 0-ohm resistors, it is used to maintain electrical connection continuity. The standard programming interface includes a 3.3V power supply terminal, a GND ground terminal, a CLK clock signal terminal, and an SW serial data terminal; The electronic product coding bits are used to mark the product model, batch number, serial number, and software and hardware version number; The circuit board body is provided with a first solder point, a second solder point, a third solder point and a fourth solder point. The first solder point, the second solder point and the third solder point correspond to the U, V and W phases of the motor respectively, thereby connecting the three-phase windings of the motor; the fourth solder point is used to connect the Y capacitor and connect it to the iron core of the motor. The circuit board body is provided with a first Hall sensor, a second Hall sensor and a third Hall sensor arranged evenly at an electrical angle of 120°. The circuit board body is provided with several through holes for production testing and installation positioning; The circuit board body is equipped with a temperature sampling resistor; The circuit board body is equipped with a sampling resistor.

[0005] As a further preferred technical solution to the above technical solution, the main body of the circuit board is provided with multiple layouts to adapt to various specifications of motors. The core circuits of the multiple layouts are consistent, and the solder joints and interfaces are set according to the corresponding motor specifications.

[0006] As a further preferred embodiment of the above technical solution, the first solder joint, the second solder joint, and the third solder joint are all arranged on the front side of the circuit board body.

[0007] As a further preferred embodiment of the above technical solution, the first Hall sensor, the second Hall sensor, and the third Hall sensor are all arranged on the back of the circuit board body and close to the motor mounting position.

[0008] As a further preferred technical solution to the above technical solution, the sampling resistor adopts a single-resistor sampling mode and is located on the back of the circuit board body.

[0009] As a further preferred technical solution to the above technical solution, the key parts of the circuit board body are coated with protective adhesive.

[0010] The beneficial effects of this utility model are as follows: 1. High adaptability: It provides a variety of models to fit different motor sizes, which users can choose as needed, simplifying the assembly process, improving system compatibility and reducing costs.

[0011] 2. Flexible electromagnetic compatibility: The system has reserved mounting positions for Y capacitors, allowing users to choose between soldering Y capacitors or using 0-ohm resistors for bridging, depending on electromagnetic environment requirements, thus reducing the cost of repeated development.

[0012] 3. Easy maintenance: The front pads adopt single-sided soldering technology, which facilitates later repair and replacement, reducing maintenance costs and time.

[0013] 4. Excellent protective performance: Special protective adhesive is applied to key parts to improve reliability in harsh environments and extend service life.

[0014] 5. High degree of functional integration and convenient debugging: It is equipped with a standard programming interface, which supports online programming and debugging; the power and signal interfaces support multiple speed adjustment modes and are compatible with different host computer control systems.

[0015] 6. Facilitates management and improvement: Equipped with electronic product coding, which is conducive to precision production, quality control and product improvement.

[0016] 7. High production efficiency: It is equipped with positioning through holes, which simplifies the installation and alignment steps and shortens the production cycle.

[0017] 8. Stable motor operation: The Hall sensor is reasonably laid out, which improves the position detection accuracy and ensures the smooth operation of the motor.

[0018] 9. Comprehensive safety protection: The temperature sampling resistor works in conjunction with the MCU to achieve over-temperature protection, ensuring equipment safety.

[0019] 10. Excellent sampling performance: Single-resistor sampling mode with four sampling resistors connected in parallel improves sampling stability, reliability and accuracy. Attached Figure Description

[0020] Figure 1 This is a schematic diagram (front) of one version of this utility model.

[0021] Figure 2 This is a schematic diagram (back side) of one version of this utility model.

[0022] Figure 3 This is a schematic diagram (front view) of another version of this utility model.

[0023] Figure 4 This is a schematic diagram (back side) of another version of this utility model.

[0024] The reference numerals in the attached diagram include: S1, power and signal interface; S2, Y capacitor mounting position; S3, standard programming interface; S4, electronic product code bit; S5, sampling resistor; 1, first solder joint; 2, second solder joint; 3, third solder joint; 4, fourth solder joint; 5, first Hall sensor; 6, second Hall sensor; 7, third Hall sensor; 9 / 10 / 11 / 12, through hole; 13, temperature sampling resistor. Detailed Implementation

[0025] The following description is intended to disclose the present invention so that those skilled in the art can implement it. The preferred embodiments described below are merely examples, and other obvious variations will occur to those skilled in the art. The basic principles of the present invention defined in the following description can be applied to other embodiments, modifications, improvements, equivalents, and other technical solutions that do not depart from the spirit and scope of the present invention.

[0026] This utility model discloses a motor controller for a parking air conditioner. The specific embodiments of the utility model are further described below with reference to preferred embodiments.

[0027] In the embodiments of this utility model, those skilled in the art will note that the motors and the like involved in this utility model can be considered as prior art.

[0028] Preferred embodiment.

[0029] like Figure 1-4 As shown, this utility model discloses a motor controller for a parking air conditioner, including a circuit board body. The circuit board body integrates a power and signal interface S1, a Y capacitor mounting position S2, a standard programming interface S3, and an electronic product code bit S4, wherein: The power and signal interface S1 includes a power interface (connects to an external DC power supply, adapts to a wide voltage input range of 12-48V, leads out to the outside of the motor, connects to the external power supply and the host computer, and powers the motor), a VSP interface (speed control interface, supports two modes: analog speed control voltage input and PWM speed control signal, users can select the speed control mode through hardware configuration according to actual needs, compatible with different host computer control systems, providing wider applicability and flexibility), and an FG interface (uses a speed control signal to control the motor speed, the motor FG lead feeds back the motor speed status, providing real-time feedback). The Y-capacitor mounting position S2 is used for selectively soldering a Y-capacitor or a 0-ohm resistor. Soldering a Y-capacitor suppresses common-mode noise, while soldering a 0-ohm resistor maintains electrical continuity. (This design allows for soldering a Y-capacitor when electromagnetic compatibility testing is required to suppress common-mode noise and improve winding capability. If the application environment has no strict EMC requirements, a 0-ohm resistor can be used for bridging to maintain electrical continuity without affecting signal integrity. This design can adapt to different electromagnetic environment requirements using the same circuit board, reducing the cost of repeated development due to standard differences.) The standard programming interface S3 includes a 3.3V power supply terminal, a GND ground terminal, a CLK clock signal terminal, and an SW serial data terminal (the interface supports online programming and debugging, which facilitates software updates, parameter calibration, and fault diagnosis for users. Programming can be completed without disassembling the controller, improving production and maintenance efficiency). The electronic product coding bit S4 is used to mark the product model, batch number, serial number, and software and hardware version number (for precise production, material control, efficiency and quality control of motor controllers, rapid and accurate troubleshooting, data analysis and product improvement, etc.). The circuit board body is provided with a first solder point 1, a second solder point 2, a third solder point 3 and a fourth solder point 4. The first solder point 1, the second solder point 2 and the third solder point 3 correspond to the U, V and W phases of the motor, respectively, thereby connecting the three-phase windings of the motor; the fourth solder point 4 is used to connect the Y capacitor and connect it to the motor core (to achieve noise shielding and grounding functions). The circuit board body is equipped with a first Hall sensor 5, a second Hall sensor 6 and a third Hall sensor 7 (used to accurately detect the position of the motor rotor magnetic poles) arranged evenly at an electrical angle of 120°. The circuit board body is provided with several through holes 9, 10, 11, and 12 for production testing and installation positioning, which enables it to be quickly positioned during production testing and installation, simplifies the installation alignment steps, and greatly shortens the production cycle. The circuit board body is equipped with a temperature sampling resistor 13 (connected to the MCU on the circuit board body, which can implement the over-temperature protection strategy of the motor controller). The circuit board body is equipped with a sampling resistor S5.

[0030] Specifically, the circuit board body has multiple layout types to adapt to various motor specifications. The core circuit of each layout type is consistent, and the solder joints and interfaces are set according to the corresponding motor specifications, such as... Figure 1-4 The layout shown is as follows. Figure 1-2 As a type of pattern, Figure 3-4 Another version is available, which can be adapted to motors of different specifications, especially the two common motor sizes of 78mm and 88mm. Users can choose the appropriate version according to the motor size of the actual application, thereby simplifying the assembly process and improving the overall system compatibility.

[0031] More specifically, the first solder point 1, the second solder point 2, and the third solder point 3 are all arranged on the front side of the circuit board body (using single-sided soldering technology, which not only simplifies the assembly process, but also greatly facilitates possible repairs and replacements in the future, reducing maintenance costs and time).

[0032] Furthermore, the first Hall sensor 5, the second Hall sensor 6, and the third Hall sensor 7 are all arranged on the back of the main body of the circuit board and close to the motor mounting position (this layout is beneficial to improving the signal-to-noise ratio and position detection accuracy, ensuring the smooth start-up and operation of the motor, while optimizing space utilization and making the controller structure more compact).

[0033] Furthermore, the sampling resistor S5 uses a single-resistor sampling mode and is located on the back of the main board, such as... Figure 2 and 4 As shown, there are four sampling resistors connected in parallel, which reduces the power load of a single resistor, improves heat dissipation, reduces parasitic inductance, improves high-frequency response, enhances sampling stability and reliability, optimizes PCB layout, and improves accuracy.

[0034] Preferably, key components of the circuit board are coated with protective adhesive. These key components include the chip, power devices, and high-voltage sampling area. The protective adhesive provides multiple protective functions, including insulation, moisture resistance, leakage prevention, shock resistance, dust resistance, corrosion resistance, aging resistance, and corona resistance, significantly improving the long-term reliability of the controller in harsh environments. This extends the product's lifespan and broadens its application range in environments with high humidity, high vibration, or strong electromagnetic interference.

[0035] It is worth mentioning that the technical features such as motors involved in this utility model patent application should be regarded as prior art. The specific structure, working principle, and possible control methods and spatial arrangement of these technical features can be adopted using conventional choices in the field, and should not be regarded as the inventive point of this utility model patent. This utility model patent will not be further elaborated in detail.

[0036] For those skilled in the art, modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. An electric motor controller for a stationary air conditioner, characterized by, The circuit board includes a main body, which integrates power and signal interfaces, Y capacitor mounting positions, a standard programming interface, and electronic product code bits, wherein: The power and signal interfaces include a power interface, a VSP interface, and an FG interface; The Y capacitor mounting position is used for selectively soldering Y capacitors or 0-ohm resistors. When soldering Y capacitors, it is used to suppress common-mode noise, and when soldering 0-ohm resistors, it is used to maintain electrical connection continuity. The standard programming interface includes a 3.3V power supply terminal, a GND ground terminal, a CLK clock signal terminal, and an SW serial data terminal; The electronic product coding bits are used to mark the product model, batch number, serial number, and software and hardware version number; The circuit board body is provided with a first solder point, a second solder point, a third solder point and a fourth solder point. The first solder point, the second solder point and the third solder point correspond to the U, V and W phases of the motor respectively, thereby connecting the three-phase windings of the motor; the fourth solder point is used to connect the Y capacitor and connect it to the iron core of the motor. The circuit board body is provided with a first Hall sensor, a second Hall sensor and a third Hall sensor arranged evenly at an electrical angle of 120°. The circuit board body is provided with several through holes for production testing and installation positioning; The circuit board body is equipped with a temperature sampling resistor; The circuit board body is equipped with a sampling resistor.

2. An electric motor controller for a stationary air conditioner according to claim 1, wherein The main body of the circuit board has multiple layouts to adapt to various motor specifications. The core circuits of the various layouts are the same, and the solder joints and interfaces are set according to the corresponding motor specifications.

3. The motor controller for a stationary air conditioner according to claim 1, wherein The first solder joint, the second solder joint, and the third solder joint are all located on the front side of the circuit board body.

4. The motor controller for a stationary air conditioner according to claim 1, wherein The first Hall sensor, the second Hall sensor, and the third Hall sensor are all located on the back of the circuit board body and close to the motor mounting position.

5. The motor controller for a stationary air conditioner according to claim 1, wherein The sampling resistor uses a single-resistor sampling mode and is located on the back of the main board.

6. The motor controller for a stationary air conditioner according to claim 1, wherein The key parts of the circuit board body are coated with protective adhesive.

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