CN217063510U

CN217063510U - Modular motor controller and modular motor control system

Info

Publication number: CN217063510U
Application number: CN202220363103.4U
Authority: CN
Inventors: 成竹; 陈锋
Original assignee: Suzhou Blue Stone Tech Co ltd
Current assignee: Suzhou Blue Stone Tech Co ltd
Priority date: 2022-02-22
Filing date: 2022-02-22
Publication date: 2022-07-26
Anticipated expiration: 2032-02-22

Abstract

The application provides a modularization motor controller and modularization motor control system relates to motor control technical field, includes: the device comprises a general mainboard, a capacitor module, a power device module, an auxiliary power module and a sensor module; the capacitor module is connected with the universal main board through the auxiliary power supply module and is used for filtering input current; the power device module is connected with the universal main board and used for converting the filtered input current into output current to be output to the motor, and the modularized motor controller controls the motor to operate through the output current; the auxiliary power supply module is respectively connected with the universal mainboard, the power device module and the sensor module and is used for providing working power supply for each module; the sensor module is connected with the universal main board and used for detecting the running state of the motor and the working state of the modularized motor controller.

Description

Modular motor controller and modular motor control system

Technical Field

The application relates to the technical field of motor control, in particular to a modular motor controller and a modular motor control system.

Background

Modern variable speed motors require the use of a motor control unit to achieve the variable speed function. The motor can be subdivided into various types according to different electrical parameters such as voltage, position sensor, capacity and the like. In order to adapt to a large number of motors, motor controllers with different capacities and voltages need to be designed to be matched with the motors.

However, with the prior art solutions, the design costs for the motor controller are high.

SUMMERY OF THE UTILITY MODEL

An object of the application is to provide a modularization motor controller and modularization motor control system to alleviate the higher technical problem of design cost to motor controller at present.

In a first aspect, an embodiment of the present application provides a modular motor controller, where the modular motor controller is connected to a motor, and the modular motor controller includes:

the device comprises a general mainboard, a capacitor module, a power device module, an auxiliary power supply module and a sensor module;

the capacitor module is connected with the universal main board through the auxiliary power supply module and is used for filtering input current;

the power device module is connected with the universal main board and used for converting the filtered input current into output current and outputting the output current to the motor, and the modularized motor controller controls the motor to operate through the output current;

the auxiliary power supply module is respectively connected with the universal main board, the power device module and the sensor module and is used for providing working power supply for each module;

the sensor module is connected with the universal main board and used for detecting the running state of the motor and the working state of the modular motor controller.

With reference to the first aspect, an embodiment of the present application provides a first possible implementation manner of the first aspect, where the modular motor controller further includes a plurality of standardized interfaces, and the standardized interfaces are used to connect the universal motherboard and the standardized interface modules.

In combination with the first aspect, an embodiment of the present application provides a second possible implementation manner of the first aspect, where the capacitor module, the power device module, the auxiliary power module, and the sensor module are all the standardized interface module, the capacitor module is connected to the auxiliary power through the standardized interface, and the power device module, the auxiliary power module, and the sensor module are respectively connected to the general motherboard through the standardized interface.

With reference to the first aspect, an embodiment of the present application provides a third possible implementation manner of the first aspect, where the power device module includes:

a power device and a power device driver; the power device is connected with the power device driver, and the power device driver provides the standardized interface for the power device module.

With reference to the first aspect, an embodiment of the present application provides a fourth possible implementation manner of the first aspect, where the sensor module includes:

a current sensor module; the current sensor module is connected with the universal main board and used for detecting the working current of the motor;

a voltage sensor module; the voltage sensor module is connected with the universal main board and used for detecting the working voltage of the motor;

the modular motor controller determines a first operating state of the motor based on the operating current and the operating voltage.

With reference to the first aspect, an embodiment of the present application provides a fifth possible implementation manner of the first aspect, where the sensor module includes:

a position sensor module; the position sensor module is connected with the general main board and used for detecting the rotating speed and the rotating direction of the motor, and the modularized motor controller determines the second working state of the motor based on the rotating speed and the rotating direction.

With reference to the first aspect, embodiments of the present application provide a sixth possible implementation manner of the first aspect, where the sensor module includes:

a temperature sensor module; the temperature sensor module is connected with the universal main board and used for detecting the working temperature of the modularized motor controller, and the modularized motor controller determines the working state of the modularized motor controller based on the working temperature.

With reference to the first aspect, an embodiment of the present application provides a seventh possible implementation manner of the first aspect, where the general motherboard includes:

a central processor module; the central processing unit module is installed on the general mainboard and used for controlling the modularized motor controller to work.

With reference to the first aspect, an embodiment of the present application provides an eighth possible implementation manner of the first aspect, where the general motherboard includes:

an external control circuit module; the external control circuit module is installed on the universal main board and used for inputting external control signals to the modularized motor controller.

In a second aspect, embodiments of the present application further provide a modular motor control system, including:

a motor, a battery, an external interface, and a modular motor controller as described in the first aspect;

the modular motor controller is respectively connected with the motor, the battery and the external interface; the modular motor controller is used for controlling the motor to operate; the battery is used for providing input current for the modular motor controller; the external interface is used for connecting the modular motor controller and external equipment.

The technical scheme provided by the embodiment of the application has the following beneficial effects that:

the embodiment of the application provides a universal main board, a capacitor module, a power device module, an auxiliary power module and a sensor module; the capacitor module is connected with the universal main board through the auxiliary power supply module and is used for filtering input current; the power device module is connected with the universal main board and used for converting the filtered input current into output current to be output to the motor, and the modularized motor controller controls the motor to operate through the output current; the auxiliary power supply module is respectively connected with the universal mainboard, the power device module and the sensor module and is used for providing working power supply for each module; the sensor module is connected with the universal main board and used for detecting the running state of the motor and the working state of the modularized motor controller. The motor controllers with different capacities are only distinguished in the capacitor and power device parts, the drive controllers adapted to different types of motors are only required to be distinguished and adapted in the position sensor and temperature sensor parts, the functional modules are made into loosely coupled module circuits and interface standardization to facilitate mutual calling among different hardware, and a whole set of drive controllers matched with different variable speed motors can be designed by only adjusting power semiconductors and feedback sensor parts according to different voltages and output currents aiming at different motors, so that the design cost of the motor controller is remarkably reduced, and the technical problem of higher design cost of the motor controller is solved.

Drawings

In order to more clearly illustrate the detailed description of the present application or the technical solutions in the prior art, the drawings used in the detailed description or the prior art description will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative efforts.

Fig. 1 is a schematic structural diagram of a modular motor controller according to an embodiment of the present disclosure;

fig. 2 is a schematic diagram of a connection manner between different modules according to an embodiment of the present disclosure;

fig. 3 is a schematic diagram illustrating an operating principle of a power device module according to an embodiment of the present disclosure;

fig. 4 is a schematic structural diagram of a modular motor control system according to an embodiment of the present application.

Detailed Description

To make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions of the present application will be clearly and completely described below with reference to the accompanying drawings, and it is obvious that the described embodiments are some, but not all embodiments of the present application. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments in the present application without making any creative effort belong to the protection scope of the present application.

The terms "comprising" and "having," and any variations thereof, as referred to in the embodiments of the present application, are intended to cover non-exclusive inclusions. For example, a process, method, system, article, or apparatus that comprises a list of steps or elements is not limited to only those steps or elements but may alternatively include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.

Modern variable speed motors require the use of a motor control unit to achieve the variable speed function. The types of motors can be subdivided into various types according to the difference of electrical parameters such as voltage, position sensor, capacity, and the like. In order to adapt to a large number of motors, motor controllers of different capacities and voltages need to be designed, and the motor controllers for each parameter are designed separately. For example, two motors with 5 KW/10 KW power levels need to be adapted to the motor controller with the same power level, which is twice the design time. If a client demands a motor with about 7KW power, the motor can be changed into a small horse-drawn cart if a 5KW control driver is used for adaptation, and the maximum output power of the motor cannot be exerted. If the 10KW control driver is used for adaptation, the large horse-drawn trolley is changed, redundant capacity of the control driver is wasted, and no economic benefit exists. If the independent development of the control driver with the adaptation of about 7KW is selected, the development cost is increased.

Therefore, for the existing technical scheme, the technical problem that the design cost of the motor controller is high exists.

Based on this, the embodiment of the application provides a modularization motor controller and modularization motor control system to alleviate the higher technical problem of design cost to motor controller at present.

To facilitate understanding of the present embodiment, a detailed description will be given of a modular motor controller and a modular motor control system disclosed in the embodiments of the present application.

Fig. 1 is a schematic structural diagram of a modular motor controller according to an embodiment of the present application. As shown in fig. 1, a modular motor controller is connected to a motor, the modular motor controller including:

the device comprises a general mainboard, a capacitor module, a power device module, an auxiliary power module and a sensor module;

the capacitor module is connected with the universal mainboard through the auxiliary power supply module and used for filtering input current; the power device module is connected with the universal main board and used for converting the filtered input current into output current to be output to the motor, and the modular motor controller controls the motor to operate through the output current; the auxiliary power supply module is respectively connected with the universal mainboard, the power device module and the sensor module and is used for providing working power supply for each module; the sensor module is connected with the universal main board and used for detecting the running state of the motor and the working state of the modularized motor controller.

For example, in a motor controller, direct current of a battery is used as an input power source and needs to be connected with the motor controller through a direct current bus, and since the motor controller obtains a pulse current with a high effective value or peak value from a battery pack, and meanwhile, a high pulse voltage is generated on a direct current support, so that the motor controller is difficult to bear, a capacitor needs to be selected for filtering. The capacitor can smooth the bus voltage, so that the bus voltage of the motor controller is relatively smooth when a power device (such as an Insulated Gate Bipolar Transistor (IGBT)) is switched on and switched off, inductance parameters of a line from an IGBT end of the motor controller to a power battery end are reduced, peak voltage of the bus is weakened, high pulse current of the bus end of the motor controller is absorbed, and the effects of overcharge of the bus end voltage, influence of instantaneous voltage on the motor controller and the like are prevented.

As shown in fig. 2, the auxiliary power module is respectively connected to the general motherboard, the power device module, and the sensor module, and is configured to provide a working power for each module. The electric vehicle controller plays an important role in power conversion as a core component of an electric vehicle. The auxiliary dc power supply circuit in the converter is designed to provide reliable power support for the control part and is an important component of the controller. For example, inside the controller, the battery gets a dc supply voltage close to 15V through a series of step-down dc supply circuits. The 15V direct-current power supply voltage is divided into two paths, one path of the voltage reaches a driving direct-current power supply circuit of the three-phase inverter, and the other path of the voltage obtains 5V direct-current power supply voltage through the auxiliary power supply module to provide reference for the chip and other direct-current power supply circuits.

The power device module part can adopt Metal-Oxide-Semiconductor Field-Effect Transistor (MOSFET), Gate Turn-Off Thyristor (GTO), IGBT and other devices to form an inverter, so as to realize inversion of current, thereby obtaining output current, which is supplied to the motor. The motor controller can realize the control of the motor by adjusting the output current. The sensor module may include various sensor types, such as a position sensor, a temperature sensor, etc., and the system may analyze the operating state of the motor and the operating temperature of the controller, etc., based on the obtained data, to ensure that the operating temperature meets a safe temperature.

In some embodiments, the modular motor controller further comprises a number of standardized interfaces for connecting the universal motherboard and the interface standardization module.

Illustratively, a plurality of standardized interfaces can be reserved at corresponding positions of a capacitor, a power device and the like of the universal mainboard when the universal mainboard is produced, so that the corresponding devices of the capacitor, the power device and the like can be conveniently installed according to actual requirements in the future.

In some embodiments, the capacitor module, the power device module, the auxiliary power module, and the sensor module are standardized interface modules, the capacitor module is connected to the auxiliary power through the standardized interface, and the power device module, the auxiliary power module, and the sensor module are respectively connected to the universal motherboard through the standardized interface.

For example, as shown in fig. 2, the sensor modules such as the capacitor module, the power device module, the position sensor module, and the temperature sensor module may be manufactured into modules with standardized interfaces, for example, a Printed Circuit Board Assembly (PCBA) module, so that the interfaces of the modules are consistent with the interfaces on the universal motherboard (for example, connected by a wire harness), and different controllers may be quickly manufactured by a quick plug-in and pull-out manner. The staff can be according to the capacity model of target motor, according to calculating the concrete information that obtains corresponding required electric capacity, power device and sensor, later chooses the module that corresponds, assembles the module of difference and fixes on general mainboard, realizes being connected between the different modules through modes such as pencil connection, can be with the quick machine controller who corresponds that obtains, saved time cost and money cost greatly.

In practical applications, the two parts of the capacitor and the power device can be a single PCBA module. The position sensor and the temperature sensor can be integrated on the main logic board PCBA, and the main logic PCBA can also be used as a single module to exist in the controller, so that adaptive replacement is convenient.

In some embodiments, the power device modules in the modular motor controller may be divided into power devices and power device drivers, the power devices being connected to the power device drivers, the power device drivers providing standardized interfaces for the power device modules.

For example, as shown in fig. 3, the power device is a MOSFET, and a MOSFET inverter typically uses 6 MOSFETs. When a voltage (high level) is applied to the gate, a current flows from the drain connected to the positive electrode side of the battery to the source on the negative electrode side, and the MOSFET is turned on. When the grid voltage is converted from high level to low level, the MOSFET is closed, and the grid plays a role of switching. The power device driving module can control whether the power device is conducted or not by controlling the voltage of the grid electrode.

In some embodiments, the sensor module may include a current sensor module; the current sensor module is connected with the universal main board and used for detecting the working current of the motor.

The current sensor is a detection device, which can sense the information of the current to be detected, and can convert the sensed information into an electrical signal meeting certain standards or other information in a required form according to a certain rule for output, so as to meet the requirements of information transmission, processing, storage, display, recording, control and the like. The current sensor module is used for detecting actual current (including bus current and three-phase alternating current) of the motor during working, and vector control of the motor can be realized through current information.

In some embodiments, the sensor module may include a voltage sensor module; the voltage sensor module is connected with the universal main board and used for detecting the working voltage of the motor.

For example, as shown in fig. 2, the voltage sensor may be connected to the general motherboard through a standardized interface, and also connected to the auxiliary power supply, and obtain the working power supply through the auxiliary power supply module. The voltage sensors can be divided into direct current voltage sensors and alternating current voltage sensors according to polarity, can be divided into analog output voltage sensors and digital output voltage sensors according to output signals, and can be divided into resistive dividers, capacitive dividers, electromagnetic voltage transformers, capacitive voltage transformers, hall voltage sensors and the like according to the measurement principle. For detecting the actual voltage supplied to the motor controller for operation.

In some embodiments, the sensor module may include a position sensor module and a temperature sensor module.

For example, as shown in fig. 2, the position sensor and the temperature sensor may be connected to the general motherboard through a standardized interface, and also connected to the auxiliary power supply, and obtain the operating power supply through the auxiliary power supply module. The position sensor module is used for detecting the rotating speed and the rotating direction of the motor, and the system can analyze the running state of the motor based on the obtained data and perform position control and speed control. The temperature sensor module is used for detecting the working temperature of the controller and ensuring that the working temperature accords with the safe temperature.

In some embodiments, the universal motherboard may include a central processor module; the central processing unit module is connected with the general mainboard and is used for controlling the modularized motor controller to work.

For example, the central processing module may be mounted on the general motherboard by soldering, and the central processing module may be a dedicated chip for motor control, a Micro Control Unit (MCU) for motor control application, or the like. The central processing module may include Pulse Width Modulation (PWM) wave generating circuitry, reset circuitry, sensor signal processing circuitry, interaction circuitry, and the like. The central control module may control drivers, including Analog to Digital Converter (ADC) drivers, hall effect interface drivers, PWM drivers, etc., in response to external commands.

In some embodiments, the universal motherboard may include an external control circuit module; the external control circuit module is connected with the universal main board and used for inputting external control signals to the modularized motor controller.

For example, the external control circuit module may be mounted on the general motherboard by welding, and is configured to receive an external control signal and input the signal to the modular motor controller, such as acceleration signal and brake signal, so as to control the motor.

As shown in fig. 4, a modular motor control system provided in an embodiment of the present application includes: the system comprises a motor, a battery, an external interface and a modular motor controller;

the modular motor controller is respectively connected with the motor, the battery and the external interface; the modular motor controller is used for controlling the operation of the motor; the battery is used for providing input current for the modular motor controller; the external interface is used for connecting the modular motor controller and external equipment.

For example, an electric vehicle battery is a power source on an electric vehicle for providing input current to a modular motor controller, and in electric vehicle applications, a plurality of individual electrochemical cells are connected in series to form a battery pack. The controller can also be connected with other devices on the electric vehicle through an external interface, such as an accelerator, a brake, an instrument panel and the like, so that the feedback of motor parameters and the real-time control of the motor are realized.

The modular motor control system provided by the embodiment of the application has the same technical characteristics as the modular motor controller provided by the embodiment, so that the same technical problems can be solved, and the same technical effects can be achieved.

In addition, in the description of the embodiments of the present application, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as being fixed or detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present application can be understood in a specific case by those of ordinary skill in the art.

In the description of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present application. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

The controller in the embodiments of the present application may be in the form of a processor, which may be an integrated circuit chip having signal processing capabilities. In implementation, the above functions may be implemented by integrated logic circuits of hardware in a processor or instructions in the form of software. The Processor may be a general-purpose Processor, and includes a Central Processing Unit (CPU), a Network Processor (NP), and the like; the Integrated Circuit may also be a Digital Signal Processor (DSP), an Application Specific Integrated Circuit (ASIC), a Field-Programmable Gate Array (FPGA) or other Programmable logic device, discrete Gate or transistor logic device, or discrete hardware components. The various functional and logical block diagrams disclosed in the embodiments of the present application may be implemented or performed. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like. The devices, apparatuses, circuits, and systems disclosed in this application can be directly implemented by a hardware decoding processor, or implemented by a combination of hardware and software modules in the decoding processor. The software modules may be located in ram, flash, rom, prom, or eprom, registers, etc. as is well known in the art. The storage medium is located in a memory, and a processor reads information in the memory and combines hardware thereof to realize the functions.

In the embodiments provided in the present application, it should be understood that the disclosed apparatus and system, etc., may be implemented in other ways. The above-described embodiments of the apparatus are merely illustrative, and for example, the division of the units is only one logical division, and there may be other divisions when actually implemented, and for example, a plurality of units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection of devices or units through some communication interfaces, and may be in an electrical, mechanical or other form.

For another example, the flowchart and block diagrams in the figures illustrate the architecture, functionality, and operation of possible implementations of apparatus and computer program products according to various embodiments of the present application. In this regard, each block in the flowchart or block diagrams may represent a module, segment, or portion of code, which comprises one or more executable instructions for implementing the specified logical function(s). It should also be noted that, in some alternative implementations, the functions noted in the block may occur out of the order noted in the figures. For example, two blocks shown in succession may, in fact, be executed substantially concurrently, or the blocks may sometimes be executed in the reverse order, depending upon the functionality involved. It will also be noted that each block of the block diagrams and/or flowchart illustration, and combinations of blocks in the block diagrams and/or flowchart illustration, can be implemented by special purpose hardware-based systems that perform the specified functions or acts, or combinations of special purpose hardware and computer instructions.

The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one position, or may be distributed on multiple network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.

In addition, functional units in the embodiments provided in the present application may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined or explained in subsequent figures.

Finally, it should be noted that: the above-mentioned embodiments are only specific embodiments of the present application, and are used for illustrating the technical solutions of the present application, but not limiting the same, and the scope of the present application is not limited thereto, and although the present application is described in detail with reference to the foregoing embodiments, those skilled in the art should understand that: those skilled in the art can still make modifications or changes to the embodiments described in the foregoing embodiments, or make equivalent substitutions for some features, within the technical scope of the present disclosure; such modifications, changes or substitutions do not depart from the scope of the embodiments of the present application. Are intended to be covered by the scope of this application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

Claims

1. A modular motor controller, wherein the modular motor controller is connected to a motor, the modular motor controller comprising:

the power device module is connected with the universal main board and used for converting the filtered input current into output current to be output to the motor, and the modularized motor controller controls the motor to operate through the output current;

the auxiliary power supply module is respectively connected with the universal mainboard, the power device module and the sensor module and is used for providing working power supply for each module;

2. The modular motor controller of claim 1, further comprising a plurality of standardized interfaces for connecting the universal motherboard and standardized interface modules.

3. The modular motor controller of claim 2 wherein the capacitor module, the power device module, the auxiliary power module, and the sensor module are standardized interface modules, the capacitor module is connected to the auxiliary power source through the standardized interface, and the power device module, the auxiliary power module, and the sensor module are each connected to the common motherboard through the standardized interface.

4. The modular motor controller of claim 3 wherein the power device module comprises:

5. The modular motor controller of claim 3 wherein the sensor module comprises:

6. The modular motor controller of claim 3 wherein the sensor module comprises:

7. The modular motor controller of claim 3 wherein the sensor module comprises:

8. The modular motor controller of claim 3, wherein the common motherboard comprises:

a central processor module; the central processor module is arranged on the general mainboard and used for controlling the modular motor controller to work.

9. The modular motor controller of claim 3, wherein the common motherboard comprises:

10. A modular motor control system, comprising:

a motor, a battery, an external interface, and a modular motor controller according to any of claims 1-9;