Integrated control circuit and motor controller

Abstract

The invention discloses an integrated control circuit and a motor controller, and relates to the technical field of motor control, and the circuit comprises a power supply control integrated module which comprises an SBC basic module, a safety logic module and an output processing module, the SBC basic module is connected with the safety logic module, and the output processing module is connected with a motor; the main control integration module is respectively connected with the SBC basic module, the safety logic module, the output processing module and the motor; the driving integration module comprises an isolation driving module and an ADC sampling module, the low-voltage side of the isolation driving module is connected with the master control integration module and the safety logic module, and the ADC sampling module is connected with the high-voltage side of the isolation driving module and the master control integration module; and the power module is respectively connected with the high-voltage side of the isolation driving module, the ADC sampling module and the motor. According to the invention, the system complexity and the number of modules are reduced, and the circuit integration degree is improved.

Description

Technical Field

[0001] This application relates to the field of motor control technology, and in particular to an integrated control circuit and a motor controller. Background Technology

[0002] In electric vehicles, the motor controller controls the output torque of the drive motor based on torque or speed commands issued by the vehicle controller, thus achieving motor operation control. In related technologies, the motor controller's topology follows the logical relationship between sensors, processors, and actuators. In addition, it also has independently set auxiliary power supplies and fault handling and protection devices. Each part contains multiple independent modules, and each module is implemented by a combination of discrete circuits and chips with simple functions / complex calculations. This implementation of the motor controller suffers from a large number of system architecture modules and low integration, leading to significant challenges in cost control and development. Summary of the Invention

[0003] The main objective of this application is to provide an integrated control circuit and motor controller, which aims to solve the technical problems of the motor controller topology having a large number of components and low integration in related technologies.

[0004] To achieve the above objectives, this application proposes an integrated control circuit, comprising:

[0005] The power control integrated module includes an SBC basic module, a safety logic module, and an output processing module. The SBC basic module is connected to the safety logic module, and the output processing module is connected to the motor.

[0006] The main control integrated module is connected to the SBC basic module, the safety logic module, the output processing module, and the motor, respectively;

[0007] The driver integration module includes an isolated driver module and an ADC sampling module. The low-voltage side of the isolated driver module is connected to both the main control integration module and the safety logic module. The high-voltage side of the ADC sampling module is connected to the high-voltage side of the isolated driver module, and the low-voltage side of the ADC sampling module is connected to the main control integration module.

[0008] The power module is connected to the high-voltage side of the isolation drive module and the high-voltage side of the ADC sampling module, and is also connected to the motor.

[0009] In one embodiment, the drive integration module further includes a power control module, and the circuit further includes a power conversion module;

[0010] The power conversion module is connected to the high-voltage side of both the power control module and the isolation drive module. The high-voltage side of the isolation drive module is also connected to the power control module. The power conversion module is a discrete circuit consisting of a transformer and passive components, used to provide high-voltage power to the isolation drive module.

[0011] In one embodiment, the power control module includes a DC-DC control unit, an output monitoring and protection unit, and a secondary-side feedback unit;

[0012] The DC-DC control unit is connected to the client connector and the control terminal of the power conversion module, respectively. The output monitoring and protection unit and the secondary feedback unit are connected to the DC-DC control unit, respectively. The input terminal of the power conversion module is connected to the client connector, and the output terminal of the power conversion module and the secondary feedback unit are connected to the high-voltage side of the isolation drive module, respectively.

[0013] In one embodiment, the isolation driver module includes:

[0014] The drive processing submodule has its low-voltage side connected to the main control integrated module, and its high-voltage side connected to the high-voltage sides of the power module and the ADC sampling module, respectively.

[0015] The digital isolation submodule has its low-voltage side connected to the safety logic module and its high-voltage side connected to the high-voltage side of the drive processing submodule.

[0016] In one embodiment, the SBC basic module includes a power start-stop control unit and a vehicle communication unit; wherein, the power start-stop control unit is connected to the client connector and the vehicle communication unit respectively, the vehicle communication unit is connected to the client connector and the main control integration module respectively, and the client connector is connected to the vehicle controller;

[0017] The power start / stop control unit is used to control the power supply to start or stop working according to the received hardware start / stop command or the start / stop signal sent by the vehicle communication unit;

[0018] The vehicle communication unit is used to communicate with the vehicle controller via the client connector, and to enable the main control integration module to communicate with the vehicle controller, as well as to generate start-stop signals based on the start-stop control commands sent by the vehicle controller.

[0019] In one embodiment, the SBC basic module includes a first monitoring unit, and the security logic module includes a second monitoring unit and a security logic unit; wherein the first monitoring unit and the second monitoring unit are both connected to the security logic unit, and the security logic unit is also connected to the low-voltage side of the client connector, the main control integration module, and the isolation drive module, respectively;

[0020] The first monitoring unit is used to perform safety monitoring and fault diagnosis inside the SBC basic module and outputs the first monitoring signal.

[0021] The second monitoring unit is used to perform security monitoring and fault diagnosis inside the security logic module and outputs a second monitoring signal.

[0022] The main control integrated module is used to diagnose faults in itself and the system, and output safety control signals;

[0023] The safety logic unit is used to perform safety logic judgments and output safety logic signals based on the received fault diagnosis instructions, first monitoring signals, second monitoring signals or safety control signals;

[0024] The isolation drive module is used to output drive signals according to safety logic signals to control the power module to perform safety protection operations; wherein, the safety protection operations include three-phase open circuit and / or active short circuit.

[0025] In one embodiment, the output processing module includes an excitation processing unit; wherein the excitation processing unit is connected to both a motor connector and a main control integrated module, and the motor connector is connected to a motor;

[0026] The main control integrated module is used to generate excitation signals;

[0027] The excitation processing unit is used to convert and / or amplify the excitation signal to provide an excitation output to the motor speed sensor through the motor connector, so that the speed sensor can acquire the position and / or speed of the motor and obtain the acquisition feedback signal.

[0028] The main control integrated module is also used to decode and acquire feedback signals to obtain the position and / or speed of the motor, so as to realize the adjustment of the motor position and / or speed.

[0029] In one embodiment, the output processing module includes an excitation processing unit and a signal decoding unit; wherein the excitation processing unit is connected to the motor connector and the main control integrated module respectively, the signal decoding unit is connected to the motor connector and the main control integrated module respectively, and the motor connector is connected to the motor;

[0030] The main control integrated module is used to generate excitation signals;

[0031] The excitation processing unit is used to convert and / or amplify the excitation signal to provide an excitation output to the motor speed sensor through the motor connector, so that the speed sensor can acquire the position and / or speed of the motor and obtain the acquisition feedback signal.

[0032] The signal decoding unit is used to decode the acquired feedback signal, obtain the position and / or speed of the motor, and output it to the main control integrated module;

[0033] The main control integrated module is also used to obtain the position and / or speed of the motor in order to achieve motor position and / or speed regulation.

[0034] In one embodiment, the power module includes a main power circuit, a temperature detection unit, and a current detection unit. The high-voltage side of the ADC sampling module includes a signal acquisition unit and a comparison unit. The temperature detection unit and the current detection unit are respectively connected to the signal acquisition unit, and the signal acquisition unit is connected to the high-voltage side of the isolation drive module through the comparison unit.

[0035] The temperature detection unit is used to detect the temperature of each power device in the main power circuit and output a temperature detection signal;

[0036] The current detection unit is used to detect the phase current of the motor and outputs a current detection signal;

[0037] The signal acquisition unit is used to acquire temperature detection signals, current detection signals, and other analog signals, and perform analog-to-digital conversion to output the corresponding acquired signals; among them, other analog signals include the bus voltage of the main power circuit, the VCE voltage and VGE voltage of each power device;

[0038] The comparison unit is used to compare the acquired signal with a preset benchmark and output the comparison result signal;

[0039] The isolated drive module is used to perform fault diagnosis based on the comparison result signal and output the corresponding drive signal to the main power circuit to provide over-temperature, over-current and / or over-voltage protection.

[0040] In one embodiment, the circuit further includes a current sensor located between the power module and the motor. The power module includes a main power circuit and a temperature detection unit. The high-voltage side of the ADC sampling module includes a signal acquisition unit and a comparison unit. The current sensor is connected to the main control integrated module, the temperature detection unit is connected to the signal acquisition unit, and the signal acquisition unit is connected to the high-voltage side of the isolation drive module through the comparison unit.

[0041] The current sensor is used to detect the phase current of the motor and outputs a current sampling signal;

[0042] The main control integrated module is used to acquire the current sampling signal and generate the corresponding PWM control signal;

[0043] The temperature detection unit is used to detect the temperature of each power device in the main power circuit and output a temperature detection signal;

[0044] The signal acquisition unit is used to acquire temperature detection signals and other analog signals, perform analog-to-digital conversion, and output the corresponding acquired signals; among them, other analog signals include the bus voltage of the main power circuit, the VCE voltage and VGE voltage of each power device;

[0045] The comparison unit is used to compare the acquired signal with a preset benchmark and output the comparison result signal;

[0046] The isolation drive module is used for isolated transmission based on the PWM control signal and / or for fault diagnosis based on the comparison result signal, and outputs the corresponding drive signal to the main power circuit to provide over-temperature, over-current and / or over-voltage protection.

[0047] In addition, to achieve the above objectives, this application also proposes a motor controller, including the integrated control circuit described above.

[0048] One or more technical solutions proposed in this application have at least the following technical effects:

[0049] An integrated control circuit is proposed, comprising a power control integrated module, a main control integrated module, a drive integrated module, and a power module. The main and important functions of the motor controller are integrated into these three modules. The power control integrated module includes an SBC basic module, a safety logic module, and an output processing module; the drive integrated module includes an isolation drive module and an ADC sampling module. The SBC basic module is connected to the safety logic module, and the output processing module is connected to the motor. The main control integrated module is connected to the SBC basic module, the safety logic module, the output processing module, and the motor. The low-voltage side of the isolation drive module is connected to both the main control integrated module and the safety logic module. The high-voltage side of the ADC sampling module is connected to the high-voltage side of the isolation drive module, and the low-voltage side of the ADC sampling module is connected to the main control integrated module. The power module is connected to the high-voltage side of the isolation drive module, the high-voltage side of the ADC sampling module, and the motor, respectively. This integrated control circuit can realize complex multi-motor control-related functions, significantly reducing system complexity and the number of modules, and improving circuit integration. In this integrated control circuit, related functions can be coupled into a single module or an integrated module, reducing the number or complexity of peripheral electronic components. Only some passive or simple logic devices are used, which not only reduces device costs but also helps to reduce product size. Attached Figure Description

[0050] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this application and, together with the description, serve to explain the principles of this application.

[0051] To more clearly illustrate the technical solutions in the embodiments or related technologies of this application, the accompanying drawings used in the description of the embodiments or related technologies will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0052] Figure 1 A connection diagram of an embodiment of the integrated control circuit provided in this application;

[0053] Figure 2 A connection diagram of another embodiment of the integrated control circuit provided in this application;

[0054] Figure 3 for Figure 2 A schematic diagram of the circuit topology of the integrated control circuit;

[0055] Figure 4 for Figure 2 Circuit topology diagram of a medium power module;

[0056] Figure 5 A connection diagram of yet another embodiment of the integrated control circuit provided in this application;

[0057] Figure 6 for Figure 5 A schematic diagram of the circuit topology of the driver integrated module;

[0058] Figure 7 A schematic diagram of the circuit topology of the power control integrated module and the main control integrated module in another embodiment of the integrated control circuit provided in this application;

[0059] Figure 8 A schematic diagram of the circuit topology of the main control integrated module and the power module in another embodiment of the integrated control circuit provided in this application.

[0060] The realization of the purpose, functional features and advantages of this application will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0061] The technical solutions in the embodiments of this application are described clearly and completely below. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.

[0062] It should be noted that in this invention, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, article, or system that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, article, or system. Without further limitations, an element defined by the phrase "comprising..." does not exclude the presence of other identical elements in the process, article, or system that includes that element. In this invention, unless otherwise expressly specified and limited, the terms "connected," "fixed," etc., should be interpreted broadly. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two elements or an interaction between two elements. If the embodiments of this application involve descriptions of "first," "second," etc., such descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of indicated technical features. Therefore, features defined as "first" or "second" can explicitly or implicitly include at least one of those features. The use of "and / or" or "and / or" throughout the text implies three parallel solutions; for example, "A and / or B" includes solution A, solution B, or a solution satisfying both A and B simultaneously. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. If the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed in this application.

[0063] In related technologies, four important indicators are used to measure the product quality of motor controllers: power density, efficiency, cost, and failure rate. High power density, high efficiency, low cost, and low failure rate are important trends in the future development of motor controller products and technologies.

[0064] Currently, the topology of motor controllers follows the logical relationship of sensors, processors, and actuators. Sensors typically include bus voltage detection modules, motor phase current detection modules, motor position and speed detection modules, motor temperature detection modules, power device temperature detection modules, and power supply voltage detection modules. The processor uses an MCU (MicroControl Unit). Actuators typically include power conversion modules and power module drive circuits. In addition, auxiliary power supplies and fault handling and protection devices are independently provided. The auxiliary power supply powers the circuits or chips inside the sensors, processor, and actuators. The fault handling and protection devices typically include overvoltage protection modules, short-circuit protection modules, overcurrent protection modules, and safety processing modules. If the motor controller is configured with multiple independent modules in each of these parts, there will be as many as 13 modules. Each module is implemented by a combination of discrete circuits and chips with simple functions / complex calculations. For example, the safety processing module of the fault handling and protection device may include discrete circuits and CPLDs (Complex Programmable Logic Devices), and in some cases, even a separate MCU.

[0065] The aforementioned implementation of the motor controller suffers from a large number of system architecture modules and low integration, which limits the further reduction of PCB (Printed Circuit Board) area and consequently restricts the improvement of the overall power density of the motor controller, resulting in significant cost control challenges. Furthermore, the high coupling requirements between modules complicate the development of the motor controller. Additionally, a large number of discrete components within the discrete circuits of a module increases the failure rate of the motor controller and the cost of the components.

[0066] To address the aforementioned problems, this application provides an integrated control circuit and a motor controller. The application and its embodiments will be described below with reference to the accompanying drawings.

[0067] This application proposes an integrated control circuit.

[0068] In one embodiment of this application, reference is made to Figure 1 , Figure 1 This is a connection diagram of an embodiment of an integrated control circuit, which may include a power control integrated module, a main control integrated module, a drive integrated module, and a power module.

[0069] The power control integrated module may include an SBC basic module, a safety logic module, and an output processing module, while the drive integrated module may include an isolation drive module and an ADC sampling module.

[0070] The SBC basic module is connected to the safety logic module, the output processing module is connected to the motor, the main control integrated module is connected to the SBC basic module, the safety logic module, the output processing module and the motor respectively, the low voltage side of the isolation drive module is connected to the main control integrated module and the safety logic module respectively, the high voltage side of the ADC sampling module is connected to the high voltage side of the isolation drive module, the low voltage side of the ADC sampling module is connected to the main control integrated module, the power module is connected to the high voltage side of the isolation drive module and the high voltage side of the ADC sampling module respectively, and is also connected to the motor.

[0071] It should be noted that the integrated control circuit can be the system topology architecture of the motor controller in an electric vehicle. The power control integrated module, main control integrated module, and drive integrated module can be integrated chips (ICs) integrated through dedicated integrated circuit chips. This makes the entire integrated control circuit mainly composed of three complex ICs and a power module, effectively reducing the number of components in the motor controller. In addition, other peripheral devices can use some passive devices, buffers, or simple logic gates and other electronic devices with simple functions to save on device costs.

[0072] It should also be noted that SBC (System Base Chip) refers to the power control chip, and the SBC basic module refers to the module that implements some basic functions of power control, such as voltage conversion, hardware start / stop, and communication forwarding. The SBC basic module can also connect to external devices to achieve signal interaction, such as receiving power input, communication commands, and wake-up commands, and then interacting with the main control integrated module. The safety logic module refers to the logic judgment module that performs the specific safety protection operation before executing the safety protection function. It can provide safety protection for the SBC basic module and itself, and can also respond to external commands to execute safety protection operations. It can directly interact with the driver integrated module to drive the power module to perform safety protection operations, such as three-phase open circuit and active short circuit. The output processing module refers to the module that responds to the control of the main control integrated module and outputs corresponding signals to the outside of the power control integrated module. Specifically, it can output excitation signals to the motor, such as to the speed sensor installed inside the motor, or output converted voltage signals to external devices, such as to provide the necessary power supply to other components of the vehicle, or to power the sensors that collect data from the motor or power module. Therefore, the connection between the output processing module and the motor can be specifically connected to various sensors installed inside the motor to provide power or excitation to the sensors.

[0073] An isolated drive module is a module that drives and controls a power module in response to control signals or commands. For example, it can receive PWM (Pulse Width Modulation) control signals output from the main control integrated module and drive the power module to operate according to a preset program; it can also receive control signals from the safety logic module to perform safety protection operations and drive the power module to perform these operations; it can also connect to external devices sequentially through the main control integrated module and the power control integrated module to receive control signals as needed, thereby driving the power module to operate accordingly. Specific limitations are not specified here. The isolated drive module can be divided into a low-voltage side and a high-voltage side. After receiving a signal on the low-voltage side, it transmits it in isolation to the high-voltage side, causing the high-voltage side to output a corresponding drive signal to the power module. An ADC sampling module is a module that acquires relevant analog signals from the power module and performs ADC (Analog-to-Digital) conversion. It can send the acquired data to the main control integrated module or directly compare the acquired analog signals, causing the high-voltage side of the isolated drive module to output a corresponding drive signal to the power module based on the comparison result.

[0074] The main control integrated module refers to a control module that integrates many functions, such as an MCU. All of these functions can be implemented based on a preset program, such as drive control, fault diagnosis, data sampling, motor signal decoding, and excitation signal generation. Specific limitations are not specified here. The connection between the main control integrated module and the motor can be specifically through various sensors installed within the motor, receiving feedback signals collected by these sensors to achieve the aforementioned control functions. Specific limitations are not specified here.

[0075] A power module refers to a module that controls a motor through a combination of power devices. These power devices can be controllable switching devices such as MOSFETs (Metal-Oxide-Semiconductor Field-Effect Transistors), JFETs (Junction Field-Effect Transistors), IGBTs (Insulated Gate Bipolar Transistors), or power semiconductor switches (such as gallium nitride power semiconductors, silicon carbide power devices, etc.). No specific limitations are specified here.

[0076] Additionally, it should be noted that the SBC base module is connected to the safety logic module, allowing it to send its own fault monitoring signals to the safety logic module. This enables the power module to perform safety protection operations when the SBC base module malfunctions. The output processing module is connected to the motor, which can house multiple sensors to meet specific needs. Specifically, the output processing module connects to the speed sensor within the motor, outputting excitation signals to activate it. The main control integration module connects to the SBC base module, safety logic module, and output processing module, controlling and receiving feedback from these modules. The main control integration module also connects to the motor, specifically to sensors within the motor such as current and speed sensors, directly receiving feedback signals from these sensors. The low-voltage side of the isolated drive module is connected to both the main control integration module and the safety logic module. The power module can receive PWM control signals from the main control integrated module and control signals from the safety logic module. It is connected to the high-voltage side of the isolation drive module, which generates corresponding drive signals based on the control signals received from the low-voltage side and outputs them to the power module via the high-voltage side. The power module is connected to the motor, thus controlling its operation and shutdown. The power module is also connected to the high-voltage side of the ADC sampling module, enabling signal acquisition. The high-voltage side of the ADC sampling module is connected to the high-voltage side of the isolation drive module, allowing direct hardware control based on the acquired signals to drive the power module to perform corresponding actions. The low-voltage side of the ADC sampling module is connected to the main control integrated module, converting the acquired signals and sending them to the main control integrated module. The main control integrated module then executes software control, outputting PWM control signals to drive the power module to perform corresponding actions.

[0077] The integrated control circuit provided in this embodiment includes a power control integrated module, a main control integrated module, a drive integrated module, and a power module. It integrates the main and important functions of the motor controller into these three integrated modules. The power control integrated module includes an SBC basic module, a safety logic module, and an output processing module; the drive integrated module includes an isolation drive module and an ADC sampling module; the SBC basic module is connected to the safety logic module; the output processing module is connected to the motor; the main control integrated module is connected to the SBC basic module, the safety logic module, the output processing module, and the motor; and the low-voltage side of the isolation drive module is connected to both the main control integrated module and the safety logic module. The high-voltage side of the ADC sampling module is connected to the high-voltage side of the isolation drive module, and the low-voltage side of the ADC sampling module is connected to the main control integrated module. The power module is connected to the high-voltage side of the isolation drive module, the high-voltage side of the ADC sampling module, and the motor, respectively. This integrated control circuit can realize complex multi-motor control-related functions, significantly reducing system complexity and the number of modules, and improving circuit integration. In this integrated control circuit, related functions can be coupled into a module or an integrated module, reducing the number or complexity of peripheral electronic components. Only some passive or simple logic devices are used, which not only reduces device costs but also helps to reduce product size.

[0078] In another embodiment of this application, reference is made to Figure 2 , Figure 2 This is a connection diagram of another embodiment of the integrated control circuit. The drive integrated module may also include a power control module, and the integrated control circuit may also include a power conversion module.

[0079] The power conversion module is connected to the high-voltage side of both the power control module and the isolation drive module. The high-voltage side of the isolation drive module is also connected to the power control module. The power conversion module is a discrete circuit consisting of a transformer and passive components, used to provide high-voltage power to the isolation drive module.

[0080] It should be noted that the isolated drive module in the drive integration module is divided into a low-voltage side and a high-voltage side. The power supply for the high-voltage side can be provided by the power conversion module, which is a module that converts the low-voltage side voltage to the high-voltage side voltage. Here, it is a discrete circuit composed of a transformer and passive components. The control of this power conversion module can be realized by the power control module in the drive integration module. The power control module is a module that controls the switching devices in the discrete circuit.

[0081] It should also be noted that the control terminal of the power conversion module is connected to the power control module and can receive control signals output by the power control module. The input terminal of the power conversion module can be connected to the power supply to receive power. The output terminal of the power conversion module is connected to the high-voltage side of the isolation drive module, and can provide the converted high-voltage side power supply to the high-voltage side of the isolation drive module to enable it to work and output drive signals to the power module. The high-voltage side of the isolation drive module is also connected to the power control module, and can provide feedback on the received voltage status to the power control module so that it can adjust the operation of the power conversion module accordingly. For example, if an abnormality is detected in the high-voltage side power supply received by the high-voltage side of the isolation drive module, the power conversion module can be controlled to stop working, or the voltage / power output of the high-voltage side power supply of the power conversion module can be adjusted according to the voltage / power of the high-voltage side power supply feedback. No specific limitation is made here.

[0082] Additionally, it should be noted that the power conversion module is a discrete circuit composed of a transformer and passive components; for example, the passive components in the power conversion module may include power transistors, filter capacitors, rectifier diodes, etc. Unlike the three integrated modules mentioned above, this discrete circuit is located outside the driver integrated module, implementing only simple functions, without occupying excessive space, and does not require the use of numerous, complex, or expensive components.

[0083] In this embodiment, a power control module is integrated into the driver integration module, replacing the externally installed power control IC in related technologies. The high-voltage side voltage output from the power conversion module to the isolation driver module can also be adjusted by the power control module, and the secondary side feedback of the power conversion module is realized inside the driver integration module, saving external feedback isolation devices. This has significant effects in simplifying the circuit structure, saving device costs, and improving system integration.

[0084] In one feasible implementation, refer to Figure 3 , Figure 3 for Figure 2 The circuit topology diagram of the integrated control circuit shows that the SBC basic module can include a power start-stop control unit and a vehicle communication unit. The power start-stop control unit is connected to the client connector and the vehicle communication unit, the vehicle communication unit is connected to the client connector and the main control integrated module, and the client connector is connected to the vehicle controller.

[0085] The power start / stop control unit is used to control the power supply to start or stop working according to the received hardware start / stop command or the start / stop signal sent by the vehicle communication unit;

[0086] The vehicle communication unit is used to communicate with the vehicle controller via the client connector, and to enable the main control integration module to communicate with the vehicle controller, as well as to generate start-stop signals based on the start-stop control commands sent by the vehicle controller.

[0087] It should be noted that the client connector is used to connect devices, circuits, apparatuses, or equipment outside the integrated control circuit. For example, it can connect to sensors mounted on the motor, or to a host computer such as the vehicle controller of an electric vehicle; no specific limitations are made here. The power start-stop control unit can control the power supply to start or stop in response to hardware start-stop commands transmitted by the client connector, or it can control the power supply to start or stop in response to start-stop signals sent by the vehicle communication unit. This power supply can be the electric motor powering the drive motor of the electric vehicle, or other power sources. The vehicle communication unit can communicate with external devices such as the vehicle controller, or with the main control integrated module through the client connector, enabling the main control integrated module to have vehicle communication capabilities. The vehicle communication unit can specifically use buses such as CAN (Controller Area Network), LIN (Local Interconnect Network), or FlexRay (vehicle network) to achieve communication transmission and reception functions. The vehicle communication unit can also perform signal conversion, such as converting received commands into control signals to control the power start-stop control unit, or converting external commands into a signal format that the main control integrated module can receive; no specific limitations are made here.

[0088] In some implementations, the SBC base module can convert the received power supply voltage, output a low-voltage power supply voltage to other integrated modules, or perform voltage conversion based on its own internal power supply needs. It can also forward received instructions to the main control integrated module or forward signals generated by the main control integrated module to external devices through the vehicle communication unit. It can also realize functions such as communication between itself and the main control integrated module and receiving control signals sent by the main control integrated module.

[0089] For example, such as Figure 3As shown, the SBC base module may also include a first power supply unit, connected to the client connector, receiving power supply VIN1, and also connected to the low-voltage side of the main control integrated module, the isolated drive module, and / or other low-voltage control modules that require power. It can convert the received power supply VIN1 into a suitable supply voltage to power the SBC base module itself, power the main control integrated module, provide low-voltage side power supply VCC_LV to the low-voltage side of the isolated drive module, and / or power other modules requiring low-voltage input. The input of this first power supply unit is generally the KL30 / KL31 of the low-voltage battery, and some backup inputs, such as those in some motor controllers with high-voltage backup functions. These can be obtained by converting the high-voltage side power supply VCC_HV received from the high-voltage side of the isolated drive module, or by adding a low-voltage winding to the power conversion module and then converting its output. No specific limitations are made here. When the first power supply unit powers the SBC base module itself, it can be specifically connected to a corresponding unit, such as the vehicle communication unit. Figure 3 (Not shown in the image) is supplied with power.

[0090] like Figure 3 As shown, the SBC basic module may also include an internal communication unit, which is connected to the main control integration module and enables communication between the SBC basic module and the main control integration module, thus giving the main control integration module SBC communication functionality.

[0091] like Figure 3 As shown, the SBC basic module may also include an interrupt unit connected to the main control integrated module. This interrupt unit enables the main control integrated module to perform reset and interrupt control on the SBC basic module, as well as corresponding control feedback, thus giving the main control integrated module reset and interrupt functions. For example, the main control integrated module can actively send an interrupt control signal to the SBC basic module, or send an interrupt control signal to the SBC basic module due to a fault triggering mechanism, causing the SBC basic module to enter sleep mode or send a hard-wired signal to the safety logic module, thereby enabling the power module to perform safety protection operations.

[0092] In this embodiment, the SBC basic module enables communication between the vehicle controller and the main control integrated module of the circuit, and can realize the interaction of multiple functions between itself and the main control integrated module, thus improving the basic power control function of the power control integrated module.

[0093] In one feasible implementation, continue to refer to Figure 3The SBC basic module may include a first monitoring unit, and the security logic module may include a second monitoring unit and a security logic unit; wherein the first monitoring unit and the second monitoring unit are both connected to the security logic unit, and the security logic unit is also connected to the low-voltage side of the client connector, the main control integration module and the isolation drive module respectively;

[0094] The first monitoring unit is used to perform safety monitoring and fault diagnosis inside the SBC basic module and outputs the first monitoring signal.

[0095] The second monitoring unit is used to perform security monitoring and fault diagnosis inside the security logic module and outputs a second monitoring signal.

[0096] The main control integrated module is used to diagnose faults in itself and the system, and output safety control signals;

[0097] The safety logic unit is used to perform safety logic judgments and output safety logic signals based on the received fault diagnosis instructions, first monitoring signals, second monitoring signals or safety control signals;

[0098] The isolation drive module is used to output drive signals according to safety logic signals to control the power module to perform safety protection operations; wherein, the safety protection operations include three-phase open circuit and / or active short circuit.

[0099] It should be noted that the client connector can receive output commands from other external systems or devices, such as fault diagnosis commands from automotive fault diagnosis systems or vehicle controllers. These commands are then sent to the safety logic unit so that the motor controller can execute corresponding safety protection operations, stopping the motor or actively short-circuiting it to ensure equipment safety. The main control integrated module's own fault diagnosis can include bus overvoltage, bus undervoltage, and bus overcurrent. The main control integrated module's system fault diagnosis refers to fault diagnosis of the entire integrated control circuit, such as system overcurrent, system overvoltage, driver failure, and abnormal motor speed; specific limitations are not specified here. The first monitoring unit, safety logic unit, and isolated drive module constitute a loop for safety monitoring and protection within the SBC basic module. Specifically, it can monitor the power status of each unit within the SBC basic module. When faults such as overvoltage, overcurrent, or short circuit are detected, a first monitoring signal is generated and sent to the safety logic unit for logical judgment, so that corresponding safety protection operations can be executed subsequently. Similarly, the second monitoring unit, the security logic unit, and the isolation driver module form a loop for security monitoring and protection within the security logic module, which will not be elaborated further here. The main control integration module, the security logic unit, and the isolation driver module also form a loop, enabling the main control integration module to have security control functions. Specifically, it can perform fault diagnosis based on the sampled data, and can also perform security monitoring and fault diagnosis on its own internal parts, as well as the entire system or other parts of the system, thereby generating security control signals and sending them to the security logic unit for subsequent execution of corresponding security protection operations.

[0100] It should also be noted that the logical judgments executed in the safety logic unit can be set according to actual needs. For example, it can execute logical OR judgments. As long as it receives any one or more of the fault diagnosis command, the first monitoring signal, the second monitoring signal, and the safety control signal, it can output the safety logic signal A1, causing the power module to perform safety protection operations. In addition to three-phase open circuit and active short circuit, other protection operations can be added as needed. Among them, three-phase open circuit (FW: Free Wheeling) refers to the operation of disconnecting all three-phase bridge arm circuits in the power module; active short circuit (ASC: Active Short Circuit) refers to the operation of simultaneously opening the upper three bridges or the lower three bridges in the power module, so that the stator windings of the motor form a closed loop.

[0101] In some implementations, the safety logic module can perform safety logic judgments, provide feedback on the results of the safety logic judgments, perform voltage conversion based on its own internal power supply requirements, or output the converted power supply voltage to other integrated modules. It can also perform functions such as backup speed detection.

[0102] For example, such as Figure 3As shown, the safety logic unit is also used to feed back the safety logic signal to the main control integration module, so that the main control integration module can know the logical judgment result of the safety control signal it sends in a timely manner. Therefore, the main control integration module also has a safety control feedback function.

[0103] like Figure 3 As shown, the safety logic module may also include a second power supply unit, connected to the client connector, receiving power supply VIN2, and also connected to the low-voltage side of the isolation drive module and / or other low-voltage control modules that require power. It can convert the received power supply VIN2 into a suitable supply voltage to power the safety logic module itself, provide low-voltage side power supply VCC_LV to the low-voltage side of the isolation drive module, and / or power other modules that require low-voltage input. The inputs of this second power supply unit are generally the KL30 / KL31 of the low-voltage battery, and some spare inputs. When the second power supply unit powers itself, it can be specifically connected to the corresponding unit (…). Figure 3 (Not shown in the image) is supplied with power.

[0104] It should be noted that when the SBC basic module has a first power supply unit and the safety logic module has a second power supply unit, the VCC_LV received by the low-voltage side of the isolation drive module can come from either power supply unit, which can be determined according to actual needs.

[0105] In this embodiment, safety protection can be provided for internal faults in the power control integrated module, for externally sent fault diagnosis commands, and for the main control integrated module's safety control. All of these are uniformly output by the safety logic unit to the isolation drive module to control the power module to perform corresponding safety protection operations. The control method is simple and can provide comprehensive safety protection.

[0106] In one feasible implementation, continue to refer to Figure 3 The output processing module may include an excitation processing unit; wherein the excitation processing unit is connected to the motor connector and the main control integrated module respectively, and the motor connector is connected to the motor;

[0107] The main control integrated module is used to generate excitation signals;

[0108] The excitation processing unit is used to convert and / or amplify the excitation signal to provide an excitation output to the motor speed sensor through the motor connector, so that the speed sensor can acquire the position and / or speed of the motor and obtain the acquisition feedback signal.

[0109] The main control integrated module is also used to decode and acquire feedback signals to obtain the position and / or speed of the motor, so as to realize the adjustment of the motor position and / or speed.

[0110] It should be noted that the main control integration module, excitation processing unit, motor connector, and motor form a complete link, realizing the detection of motor position / speed and corresponding excitation control. The main control integration module can generate excitation signals and can also receive and decode the motor's acquired feedback signals to obtain the motor's position and / or speed, so as to adjust the position and / or speed accordingly. Therefore, this main control integration module has signal generation and decoding functions. Among them, the acquired feedback signals, such as SIN / COS signals, can be divided into different types of signals based on different sensor types. The decoding of the acquired feedback signals can be software decoding similar to DSADC or hardware decoding similar to ADS1205. The decoded speed / position information can be specifically used for the control algorithm and protection within the main control integration module. The excitation processing unit can be used to convert and / or amplify the excitation signals required for the acquisition work of the speed sensor or resolver in the motor.

[0111] In some implementations, the output processing module can perform voltage conversion or output the converted voltage VOUT to sensors such as position sensors, speed sensors, and rotary transformers in the motor based on its own internal power supply requirements. Since the position sensor is connected to the motor, it is prone to short circuit faults. Therefore, the output processing module can also perform safety monitoring and fault diagnosis on its output voltage to achieve short circuit protection.

[0112] For example, such as Figure 3 As shown, the output processing module may include a third power supply unit and an output power supply unit, both of which are connected to the client connector. The third power supply unit is used to receive power supply VIN. The third power supply unit is also connected to the output power supply unit and can convert the received power supply VIN3 into a suitable power supply voltage and output it through the client connector to power the sensor devices in the motor. Of course, the third power supply unit can also power other units in the output processing module that require low voltage input.

[0113] For example, such as Figure 3As shown, the output processing module may further include a third monitoring unit connected to the main control integration module. This third monitoring unit is used for safety monitoring and fault diagnosis of internal components of the output processing module, such as the output power supply unit, and outputs a third monitoring signal. Correspondingly, the main control integration module can perform fault handling based on the third monitoring signal, determine whether a fault exists, and then generate a safety control signal based on the fault determination result, which is sent to the safety logic unit. The safety logic unit then performs safety logic judgment based on the safety control signal and outputs a safety logic signal, enabling the output power supply or excitation unit (i.e., the output power supply unit) of the output processing module to have short-circuit protection. Therefore, the main control integration module has a fault handling function based on a preset program. It is understandable that the third monitoring unit can also be directly connected to the safety logic unit, provided that the fault handling function based on a preset program in the main control integration module is not required.

[0114] In some implementations, such as Figure 3 As shown, the safety logic module may include a backup speed detection unit connected to the safety logic unit. This backup unit is used to detect the speed when the output processing module malfunctions or when the main control integration module encounters a problem with fault diagnosis based on sampled data. It then outputs a speed detection signal to the safety logic unit. When the motor speed is determined to be abnormal, the backup unit outputs a safety logic signal to the isolation drive module to perform safety protection operations, thereby ensuring that the motor speed operates normally. In other words, the safety logic module has the function of backup speed detection and monitoring.

[0115] In this embodiment, the output processing module can not only realize the excitation control of the motor, but also realize the power supply and short circuit protection of external sensors or other external devices. The output processing module is only connected to the client connector, the motor connector and the main control integrated module, which can simplify the connection relationship of the internal modules in the power control integrated module and avoid too many complex connection methods, thereby avoiding increasing the complexity of the integrated control circuit.

[0116] Continue to refer to Figure 3 In some specific implementations, the main control integration module can be connected to the motor via a motor connector to sample the motor temperature, and then perform temperature anomaly judgment based on a preset program, thereby performing safety control or directly controlling the motor, without specific limitations here; therefore, the main control integration module can also have temperature sampling, temperature anomaly judgment and motor control functions.

[0117] Understandably, in the power control integrated module (IC), the SBC basic module, safety logic module, and output processing module achieve maximum decoupling, exchanging only monitoring and diagnostic fault information. Even if a unit within one module fails, it won't affect the normal functioning of other units in other modules. For example, if the second monitoring unit fails, the first and third monitoring units can still operate normally, and the safety logic unit can provide corresponding safety protection. Simultaneously, each module is closely connected to the main control integrated module, enabling communication, control, and status feedback.

[0118] In one feasible implementation, continue to refer to Figure 3 The power control module in the drive integration module may include a DC-DC control unit, an output monitoring and protection unit, and a secondary feedback unit. The DC-DC control unit is connected to the client connector and the control terminal of the power conversion module, respectively. The output monitoring and protection unit and the secondary feedback unit are connected to the DC-DC control unit, respectively. The input terminal of the power conversion module is connected to the client connector, and the output terminal of the power conversion module and the secondary feedback unit are connected to the high-voltage side of the isolation drive module, respectively.

[0119] It should be noted that the DC-DC control unit can start working after receiving power supply VIN4, generating a control signal to the control terminal of the power conversion module to start its operation. The power conversion module also receives power supply VIN4, and then performs DC-DC conversion, outputting the high-voltage side power supply VCC_HV to the high-voltage side of the isolation drive module to power it. The secondary-side feedback unit is used to detect the voltage / power of the high-voltage side power supply VCC_HV received by the high-voltage side of the isolation drive module, and then feeds it back to the DC-DC control unit to adjust the DC-DC conversion of the power conversion module, thereby adjusting the voltage / power of the output high-voltage side power supply VCC_HV.

[0120] For example, such as Figure 3 As shown, the power conversion module may include a power transistor Q1, a transformer T1, a filter capacitor C1, and a rectifier diode D1. The control terminal of the power transistor Q1 is connected to the DC-DC control unit, its source is grounded, and its drain is connected to one end of the primary winding of the transformer T1. The other end of the primary winding of the transformer T1 is connected to the client connector to receive power supply VIN4. One end of the secondary winding of the transformer T1 is connected to the positive terminal of the rectifier diode D1. The negative terminal of the rectifier diode D1 is connected to one end of the filter capacitor C1 and the positive input terminal of the high-voltage side of the isolation drive module. The other end of the secondary winding of the transformer T1 is connected to the other end of the filter capacitor C1 and the negative input terminal of the high-voltage side of the isolation drive module.

[0121] In this embodiment, the power conversion module implements DC-DC conversion, which has a simple circuit structure, requires fewer components, and only needs common passive components, thus saving component costs and avoiding an increase in the size of the motor controller. The power control module includes a DC-DC control unit, an output monitoring and protection unit, and a secondary-side feedback unit, replacing the externally located power control IC in related technologies. The output voltage of the power conversion module can be obtained through the secondary-side feedback unit, which is directly implemented within the driver integration module, saving external feedback isolation devices. This has significant effects on simplifying the circuit structure, saving component costs, and improving system integration.

[0122] In some implementations, reference continues. Figure 3 The isolated drive module in the drive integration module may include an isolated transmission unit, a safety execution unit, and an output control unit; wherein, the isolated transmission unit is connected to the main control integration module, the safety execution unit is connected to the safety logic module, and the output control unit is isolated from the isolated transmission unit, the safety execution unit, and the power module respectively;

[0123] The isolation transmission unit is used to receive the PWM control signal output by the main control integrated module and to isolate and transmit the PWM control signal so that the output control unit outputs the corresponding drive signal to the power module.

[0124] The safety execution unit is used to receive the safety logic signal A1 and perform drive control for safety protection operations, specifically causing the output control unit to output the corresponding drive signal to the power module.

[0125] The main control integration module can calculate and generate PWM control signals based on the acquired information such as current, voltage, and speed. In addition, it can also determine whether there is a fault based on voltage, current, and speed, and then generate PWM control signals based on the fault determination results.

[0126] In some implementations, reference continues. Figure 3 The low-voltage side of the isolated drive module may also include a communication unit, which is connected to the main control integrated module and isolated from the output control unit;

[0127] The communication unit is used to directly isolate and transmit the drive control signal after the main control integration module receives the drive control command based on the vehicle communication or SBC communication function and converts it into a drive control signal, so that the output control unit outputs the corresponding drive signal to the power module. Therefore, the main control integration module has drive communication function.

[0128] In some implementations, reference continues. Figure 3The low-voltage side of the isolated drive module may also include an IO interface unit. The IO interface unit is isolated from the output control unit and can be used to directly receive external input drive control signals, so that the output control unit outputs the corresponding drive signal to the power module.

[0129] In some implementations, reference continues. Figure 3 The low-voltage side of the isolation drive module may further include a low-voltage power supply unit, and the high-voltage side of the isolation drive module may further include a high-voltage power supply unit. The low-voltage power supply unit can be connected to the first power supply unit of the SBC base module or the second power supply unit of the safety logic module, so that the low-voltage power supply VCC_LV received by the low-voltage power supply unit can come from the SBC base module or the safety logic module of the power control integrated module; the low-voltage power supply unit can also be connected to other units on the low-voltage side of the isolation drive module. Figure 3 (Not shown in the diagram), supplying power to each unit. The high-voltage power supply unit is connected to the secondary-side feedback unit in the power conversion module and the power control module, respectively, and its functions are described above and will not be repeated here; the high-voltage power supply unit can also be connected to other units on the high-voltage side of the isolation drive module (…). Figure 3 (Not shown in the image) Powers each unit.

[0130] In some implementations, reference continues. Figure 3 The low-voltage side of the isolation drive module may also include a status feedback unit, and the high-voltage side of the isolation drive module may also include a detection and protection unit; wherein, the detection and protection unit is connected to the power module, the detection and protection unit is also isolated from the status feedback unit, and the status feedback unit is connected to the main control integrated module.

[0131] The detection and protection unit receives the sampling signal obtained from the power module, performs safety monitoring and fault diagnosis, and outputs the status detection result signal to the status feedback unit. The status feedback unit can send the received status detection result signal to the main control integrated module, which then performs fault diagnosis based on its internal program and generates corresponding safety control signals or PWM control signals. Therefore, the main control integrated module has fault diagnosis, safety control, and motor control functions. The sampling signal obtained by the detection and protection unit from the direct sampling of the power module can be a digital signal.

[0132] In the above embodiments, the isolated drive module inside the complex IC drive integration module is specifically defined. It can not only receive PWM control signals from the main control integration module to realize motor drive control, but also perform power module status detection and feedback. This enables the main control integration module to realize fault diagnosis based on preset software, so that the power module can respond to fault protection actions in a timely manner.

[0133] In one feasible implementation, refer to Figure 4 , Figure 4 for Figure 2 The circuit topology diagram of the medium power module shows that the power module may include a main power circuit, a temperature detection unit, and a current detection unit. The high voltage side of the ADC sampling module may include a signal acquisition unit and a comparison unit. The temperature detection unit and the current detection unit are respectively connected to the signal acquisition unit, and the signal acquisition unit is connected to the high voltage side of the isolation drive module through the comparison unit.

[0134] The temperature detection unit is used to detect the temperature of each power device in the main power circuit and output a temperature detection signal;

[0135] The current detection unit is used to detect the phase current of the motor and outputs a current detection signal;

[0136] The signal acquisition unit is used to acquire temperature detection signals, current detection signals, and other analog signals, and perform analog-to-digital conversion to output the corresponding acquired signals; among them, other analog signals include the bus voltage of the main power circuit, the VCE voltage and VGE voltage of each power device;

[0137] The comparison unit is used to compare the acquired signal with a preset benchmark and output the comparison result signal;

[0138] The isolated drive module is used to perform fault diagnosis based on the comparison result signal and output the corresponding drive signal to the main power circuit to provide protection against over-temperature, over-current and / or over-voltage.

[0139] It should be noted that a bus capacitor is connected in parallel to the DC bus of the main power circuit of the power module. The main power circuit can be a three-phase bridge arm circuit, with each bridge arm circuit having an upper bridge arm switch and a lower bridge arm switch, and each bridge arm switch using power devices. The temperature detection unit can use a temperature sensor, NTC thermistor, or diode to detect the temperature, and after relevant signal processing, outputs an analog temperature detection signal to the signal acquisition unit on the high-voltage side of the ADC sampling module. The current detection unit includes three resistors, connected between the negative terminal of the DC bus and the lower bridge arm switch, to detect the current of the power devices, and outputs an analog current detection signal to the signal acquisition unit on the high-voltage side of the ADC sampling module. The signal acquisition unit then performs analog-to-digital conversion and outputs the acquired signal to the comparison unit. The comparison unit can compare the acquired signal with a preset benchmark and output a comparison result signal. This comparison unit implements hardware fault diagnosis, allowing the detection and protection unit to directly diagnose faults and then cause the output control unit to output the corresponding drive signal to the power module to provide over-temperature, over-current, and / or over-voltage protection for the power module.

[0140] In some implementations, reference is made to Figure 3The ADC sampling module may also include a signal forwarding unit, which is connected to the signal acquisition unit and the main control integration module respectively;

[0141] The signal forwarding unit can receive the acquired signal output by the signal acquisition unit after analog-to-digital conversion based on temperature detection signal, current detection signal and other analog signals, and then forward it to the main control integration module. The main control integration module performs data sampling and executes software control based on the sampled data, thereby calling functions such as safety control, fault diagnosis or motor control. Therefore, the main control integration module has a data sampling function.

[0142] In this embodiment, the power module and the drive integration module are specifically configured. On one hand, the ADC sampling module in the drive integration module can collect data such as module temperature, phase current, bus voltage, and VCE and VGE voltages of each power device from the power module, and transmit these data to the main control integration module for software protection. On the other hand, the ADC sampling module in the drive integration module can also compare and diagnose the collected signals, such as bus overvoltage comparison, overtemperature comparison, and overcurrent comparison, to directly provide hardware protection for the power module. This allows the drive integration module to directly trigger fault protection, providing immediate response and protection, thus ensuring the safe operation of the power module. Furthermore, the detection and protection unit of the isolated drive module in the drive integration module can also directly perform parameter identification and health monitoring on some sampled signals of the power module (such as VCE / VGE). For example, it can detect the on-resistance through the VCE pin voltage and use the on-resistance information to detect the temperature and health status of the power module. As can be seen, this embodiment provides multiple monitoring and protection methods for the power module, which can further ensure the safe operation of the power module and the rapid response of the drive integration module, thereby improving the safety of the integrated control circuit.

[0143] In yet another embodiment of this application, reference is made to Figure 5 , Figure 5 This is a connection diagram of another embodiment of the integrated control circuit. The isolation drive module may include a drive processing submodule and a digital isolation submodule.

[0144] The low-voltage side of the drive processing submodule is connected to the main control integration module, the high-voltage side of the drive processing submodule is connected to the high-voltage sides of the power module and the ADC sampling module respectively, the low-voltage side of the digital isolation submodule is connected to the safety logic module, and the high-voltage side of the digital isolation submodule is connected to the high-voltage side of the drive processing submodule.

[0145] It should be noted that the isolation driver module is split into two sub-modules here. The complex IC driver integration module has four modules. The digital isolation transmission function is set up as a separate sub-module, and other functions are set up in the driver processing sub-module. This allows the safety execution operation based on the safety logic signal to be transmitted to the output control unit more quickly, so that the output drive signal can be promptly sent to the power module to perform the safety protection operation.

[0146] In one feasible implementation, refer to Figure 6 , Figure 6 for Figure 5 The circuit topology diagram of the drive integrated module is shown. The drive integrated module may also include a power control module, and the integrated control circuit may also include a power conversion module.

[0147] The power conversion module is connected to the high-voltage side of the power control module, the drive processing submodule, and the digital isolation submodule, respectively. The high-voltage side of the drive processing submodule is also connected to the power control module. The power conversion module is a discrete circuit composed of a transformer and passive components, used to provide high-voltage power to the drive processing submodule and the digital isolation submodule.

[0148] For example, such as Figure 6 As shown, the low-voltage side power supply VCC_LV1 input to the drive processing submodule and the low-voltage side power supply VCC_LV2 input to the digital isolation submodule can both come from the SBC base module or the safety logic module of the power control integrated module. The low-voltage side power supply VCC_LV2 of the digital isolation submodule can also be provided by other independent power supplies, which is not specifically limited here. The digital isolation submodule directly receives the safety logic signal output by the safety logic module, isolates and transmits it to the output control unit of the drive processing submodule, so that it outputs the corresponding drive signal.

[0149] It should be noted that the digital isolation submodule can employ a digital isolator for transmitting digital signals between the high-voltage and low-voltage sides. In this embodiment, the internal units of the drive processing submodule may include any one or more of the following: a low-voltage power supply unit, a high-voltage power supply unit, an isolation transmission unit, a status feedback unit, a communication unit, an I / O interface unit, a detection and protection unit, and an output control unit; no specific limitations are imposed here. It is understood that the functions and specific connections of the above units are described in the foregoing embodiments and will not be repeated here.

[0150] In another embodiment of this application, some functions of the main control integrated module in the integrated control circuit can also be moved to the power control integrated module; some functions of the drive integrated module can also be moved to the main control integrated module.

[0151] In one feasible implementation, refer to Figure 7 , Figure 7 The diagram shows the circuit topology of the power control integrated module and the main control integrated module. The output processing module in the power control integrated module may include an excitation processing unit and a signal decoding unit. The excitation processing unit is connected to the motor connector and the main control integrated module, respectively. The signal decoding unit is connected to the motor connector and the main control integrated module, respectively. The motor connector is connected to the motor.

[0152] The main control integrated module is used to generate excitation signals;

[0153] The excitation processing unit is used to convert and / or amplify the excitation signal to provide an excitation output to the motor speed sensor through the motor connector, so that the speed sensor can acquire the position and / or speed of the motor and obtain the acquisition feedback signal.

[0154] The signal decoding unit is used to decode the acquired feedback signal, obtain the position and / or speed of the motor, and output it to the main control integrated module;

[0155] The main control integrated module is also used to obtain the position and / or speed of the motor in order to realize the adjustment of the motor position and / or speed.

[0156] It should be noted that, unlike the previous embodiments, the decoding of the motor's acquisition feedback signal is integrated into the output processing module of the power control integrated module. This allows the main control integrated module to simply receive the decoded motor position and / or speed information, simplifying the internal function settings of the main control integrated module and reducing the complexity and difficulty of setting the preset program of the main control integrated module.

[0157] In another feasible implementation, refer to Figure 8 , Figure 8 The circuit topology diagram of the main control integrated module and the power module is shown below. The integrated control circuit may also include a current sensor located between the power module and the motor. The power module may include a main power circuit and a temperature detection unit. The high voltage side of the ADC sampling module may include a signal acquisition unit and a comparison unit. The current sensor is connected to the main control integrated module, the temperature detection unit is connected to the signal acquisition unit, and the signal acquisition unit is connected to the high voltage side of the isolation drive module through the comparison unit.

[0158] The current sensor is used to detect the phase current of the motor and outputs a current sampling signal;

[0159] The main control integrated module is used to acquire the current sampling signal and generate the corresponding PWM control signal;

[0160] The temperature detection unit is used to detect the temperature of each power device in the main power circuit and output a temperature detection signal;

[0161] The signal acquisition unit is used to acquire temperature detection signals and other analog signals, perform analog-to-digital conversion, and output the corresponding acquired signals; among them, other analog signals include the bus voltage of the main power circuit, the VCE voltage and VGE voltage of each power device;

[0162] The comparison unit is used to compare the acquired signal with a preset benchmark and output the comparison result signal;

[0163] The isolation drive module is used for isolated transmission based on the PWM control signal and / or for fault diagnosis based on the comparison result signal, and outputs the corresponding drive signal to the main power circuit to provide protection against over-temperature, over-current and / or over-voltage.

[0164] It should be noted that, unlike the previous embodiments, the current detection function of the power module is moved outside the power module and implemented using a current sensor located between the power module and the motor. The current sampling signal can be directly transmitted to the main control integrated module without going through the ADC sampling module in the drive integrated module for conversion, which speeds up the current sampling speed and enables faster overcurrent protection.

[0165] It is understood that the modules and units included in each integrated module in this embodiment can be described with reference to the various implementation methods of the foregoing embodiments. For the sake of brevity, they will not be described again here.

[0166] The integrated control circuit provided in this application adopts a highly integrated approach, reducing the number of integrated ICs in the entire motor controller to a minimum of three while still achieving a wide range of functions. Only a few simple external components are needed to enhance the circuit's functionality. This not only provides comprehensive functionality but also considers the safety of each function. Furthermore, functional decoupling is maximized within each integrated module, reducing the risk of common-cause failures. Compared to the control system topologies of motor controllers in related technologies, the highly integrated circuit in this application balances product functionality and performance while reducing the number of modules in the system topology, thus lowering product size, component count, and system complexity.

[0167] This application also proposes a motor controller, which may include an integrated control circuit as described in any of the above embodiments or any of their implementations.

[0168] It should be noted that the specific structure of the integrated control circuit refers to the above embodiments. Since the motor controller adopts all the technical solutions of all the above embodiments, it has at least all the beneficial effects brought about by the technical solutions of the above embodiments, which will not be repeated here.

[0169] The above are only some embodiments of this application and do not limit the patent scope of this application. All equivalent structural transformations made under the technical concept of this application and using the contents of the specification and drawings of this application, or direct / indirect applications in other related technical fields, are included in the patent protection scope of this application.

Claims

1. An integrated control circuit, characterized in that, include: The power control integrated module includes an SBC basic module, a safety logic module, and an output processing module. The SBC basic module is connected to the safety logic module, and the output processing module is connected to the motor. The main control integration module is connected to the SBC basic module, the safety logic module, the output processing module, and the motor, respectively. The driver integration module includes an isolated driver module and an ADC sampling module. The low-voltage side of the isolated driver module is connected to the main control integration module and the safety logic module, respectively. The high-voltage side of the ADC sampling module is connected to the high-voltage side of the isolated driver module, and the low-voltage side of the ADC sampling module is connected to the main control integration module. as well as The power module is connected to the high-voltage side of the isolated drive module and the high-voltage side of the ADC sampling module, and is also connected to the motor.

2. The integrated control circuit as described in claim 1, characterized in that, The drive integration module also includes a power control module, and the circuit also includes a power conversion module; The power conversion module is connected to the high-voltage side of the power control module and the isolation drive module respectively. The high-voltage side of the isolation drive module is also connected to the power control module. The power conversion module is a discrete circuit composed of a transformer and passive components, used to provide high-voltage power supply to the isolation drive module.

3. The integrated control circuit as described in claim 2, characterized in that, The power control module includes a DC-DC control unit, an output monitoring and protection unit, and a secondary side feedback unit. The DC-DC control unit is connected to the client connector and the control terminal of the power conversion module, respectively. The output monitoring and protection unit and the secondary feedback unit are connected to the DC-DC control unit, respectively. The input terminal of the power conversion module is connected to the client connector, and the output terminal of the power conversion module and the secondary feedback unit are connected to the high-voltage side of the isolation drive module, respectively.

4. The integrated control circuit as described in claim 1, characterized in that, The isolation driver module includes: A drive processing submodule, the low-voltage side of which is connected to the main control integrated module, and the high-voltage side of which is connected to the high-voltage side of the power module and the ADC sampling module respectively; A digital isolation submodule, wherein the low-voltage side of the digital isolation submodule is connected to the safety logic module, and the high-voltage side of the digital isolation submodule is connected to the high-voltage side of the drive processing submodule.

5. The integrated control circuit as described in any one of claims 1 to 4, characterized in that, The SBC basic module includes a power start-stop control unit and a vehicle communication unit; wherein, the power start-stop control unit is connected to the client connector and the vehicle communication unit respectively, the vehicle communication unit is connected to the client connector and the main control integration module respectively, and the client connector is connected to the vehicle controller; The power start / stop control unit is used to control the power supply to start or stop working according to the received hardware start / stop command or the start / stop signal sent by the vehicle communication unit. The vehicle communication unit is used to communicate with the vehicle controller through the client connector, and to enable the main control integration module to communicate with the vehicle controller, and to generate the start-stop signal according to the start-stop control command sent by the vehicle controller.

6. The integrated control circuit according to any one of claims 1 to 4, characterized in that, The SBC basic module includes a first monitoring unit, and the security logic module includes a second monitoring unit and a security logic unit; wherein the first monitoring unit and the second monitoring unit are both connected to the security logic unit, and the security logic unit is also connected to the low-voltage side of the client connector, the main control integration module, and the isolation drive module, respectively; The first monitoring unit is used to perform safety monitoring and fault diagnosis inside the SBC basic module and output a first monitoring signal; The second monitoring unit is used to perform security monitoring and fault diagnosis inside the security logic module and output a second monitoring signal; The main control integrated module is used to diagnose faults in itself and the system, and output safety control signals. The safety logic unit is used to perform safety logic judgments and output safety logic signals based on the received fault diagnosis instructions, the first monitoring signal, the second monitoring signal, or the safety control signal. The isolation drive module is used to output a drive signal according to the safety logic signal to control the power module to perform safety protection operations; wherein, the safety protection operations include three-phase open circuit and / or active short circuit.

7. The integrated control circuit as described in any one of claims 1 to 4, characterized in that, The output processing module includes an excitation processing unit; wherein the excitation processing unit is connected to both the motor connector and the main control integrated module, and the motor connector is connected to the motor; The main control integration module is used to generate excitation signals; The excitation processing unit is used to convert and / or amplify the excitation signal to provide an excitation output to the speed sensor of the motor through the motor connector, so that the speed sensor can acquire the position and / or speed of the motor and obtain an acquisition feedback signal. The main control integrated module is also used to decode the acquired feedback signal to obtain the position and / or speed of the motor, so as to realize the adjustment of the motor position and / or speed.

8. The integrated control circuit according to any one of claims 1 to 4, characterized in that, The output processing module includes an excitation processing unit and a signal decoding unit; wherein, the excitation processing unit is connected to the motor connector and the main control integrated module respectively, the signal decoding unit is connected to the motor connector and the main control integrated module respectively, and the motor connector is connected to the motor; The main control integration module is used to generate excitation signals; The excitation processing unit is used to convert and / or amplify the excitation signal to provide an excitation output to the speed sensor of the motor through the motor connector, so that the speed sensor can acquire the position and / or speed of the motor and obtain an acquisition feedback signal. The signal decoding unit is used to decode the acquired feedback signal to obtain the position and / or speed of the motor, and output it to the main control integration module; The main control integrated module is also used to obtain the position and / or speed of the motor in order to realize the adjustment of the motor position and / or speed.

9. The integrated control circuit according to any one of claims 1 to 4, characterized in that, The power module includes a main power circuit, a temperature detection unit, and a current detection unit. The high-voltage side of the ADC sampling module includes a signal acquisition unit and a comparison unit. The temperature detection unit and the current detection unit are respectively connected to the signal acquisition unit, and the signal acquisition unit is connected to the high-voltage side of the isolation drive module through the comparison unit. The temperature detection unit is used to detect the temperature of each power device in the main power circuit and output a temperature detection signal. The current detection unit is used to detect the phase current of the motor and output a current detection signal; The signal acquisition unit is used to acquire the temperature detection signal, the current detection signal, and other analog signals, and perform analog-to-digital conversion to output the corresponding acquisition signal; wherein, the other analog signals include the bus voltage of the main power circuit, the VCE voltage and VGE voltage of each power device; The comparison unit is used to compare the acquired signal with a preset benchmark and output a comparison result signal; The isolation drive module is used to perform fault diagnosis based on the comparison result signal and output the corresponding drive signal to the main power circuit to provide over-temperature, over-current and / or over-voltage protection.

10. The integrated control circuit according to any one of claims 1 to 4, characterized in that, The circuit also includes a current sensor located between the power module and the motor. The power module includes a main power circuit and a temperature detection unit. The high-voltage side of the ADC sampling module includes a signal acquisition unit and a comparison unit. The current sensor is connected to the main control integrated module, the temperature detection unit is connected to the signal acquisition unit, and the signal acquisition unit is connected to the high-voltage side of the isolated drive module through the comparison unit. The current sensor is used to detect the phase current of the motor and output a current sampling signal; The main control integrated module is used to acquire the current sampling signal and generate the corresponding PWM control signal; The temperature detection unit is used to detect the temperature of each power device in the main power circuit and output a temperature detection signal. The signal acquisition unit is used to acquire the temperature detection signal and other analog signals, perform analog-to-digital conversion, and output the corresponding acquisition signal; wherein, the other analog signals include the bus voltage of the main power circuit, the VCE voltage and VGE voltage of each power device; The comparison unit is used to compare the acquired signal with a preset benchmark and output a comparison result signal; The isolation drive module is used to perform isolated transmission based on the PWM control signal and / or to perform fault diagnosis based on the comparison result signal, and outputs a corresponding drive signal to the main power circuit to provide over-temperature, over-current and / or over-voltage protection.

11. A motor controller, characterized in that, include: The integrated control circuit as described in any one of claims 1 to 10.

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