CN116317816B - Control system, method, equipment and storage medium for internal circuit of motor controller - Google Patents
Control system, method, equipment and storage medium for internal circuit of motor controller Download PDFInfo
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Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- H02P27/00—Arrangements or methods for the control of AC motors characterised by the kind of supply voltage
- H02P27/04—Arrangements or methods for the control of AC motors characterised by the kind of supply voltage using variable-frequency supply voltage, e.g. inverter or converter supply voltage
- H02P27/06—Arrangements or methods for the control of AC motors characterised by the kind of supply voltage using variable-frequency supply voltage, e.g. inverter or converter supply voltage using dc to ac converters or inverters
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
- G01K1/00—Details of thermometers not specially adapted for particular types of thermometer
- G01K1/02—Means for indicating or recording specially adapted for thermometers
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
- G01K7/00—Measuring temperature based on the use of electric or magnetic elements directly sensitive to heat ; Power supply therefor, e.g. using thermoelectric elements
- G01K7/16—Measuring temperature based on the use of electric or magnetic elements directly sensitive to heat ; Power supply therefor, e.g. using thermoelectric elements using resistive elements
- G01K7/22—Measuring temperature based on the use of electric or magnetic elements directly sensitive to heat ; Power supply therefor, e.g. using thermoelectric elements using resistive elements the element being a non-linear resistance, e.g. thermistor
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- H02P27/00—Arrangements or methods for the control of AC motors characterised by the kind of supply voltage
- H02P27/04—Arrangements or methods for the control of AC motors characterised by the kind of supply voltage using variable-frequency supply voltage, e.g. inverter or converter supply voltage
- H02P27/06—Arrangements or methods for the control of AC motors characterised by the kind of supply voltage using variable-frequency supply voltage, e.g. inverter or converter supply voltage using dc to ac converters or inverters
- H02P27/08—Arrangements or methods for the control of AC motors characterised by the kind of supply voltage using variable-frequency supply voltage, e.g. inverter or converter supply voltage using dc to ac converters or inverters with pulse width modulation
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/72—Electric energy management in electromobility
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- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- General Physics & Mathematics (AREA)
- Nonlinear Science (AREA)
- Electric Propulsion And Braking For Vehicles (AREA)
Abstract
The application provides a control system, a control method, a control device and a storage medium of an internal circuit of a motor controller, which relate to the technical field of motor controllers and comprise the following steps: the high-voltage domain power supply module is used for providing direct current for the acquisition module, the high-voltage domain micro-control module and the power module; the acquisition module is used for acquiring a first operation parameter of the first functional element; the first functional element and the acquisition module are in the same high voltage domain; the high-voltage domain micro control module is used for sending a first output adjustment instruction to the power module when the first operation parameter is abnormal; the power module is used for converting direct current into alternating current and outputting the alternating current to the motor; and according to the first output adjustment instruction, the state of the alternating current is adjusted to enable the first operation parameter to be recovered to be normal, so that the operation parameter of the functional element in the high voltage domain is monitored, the first functional element does not have signal crosstalk on the collected first operation parameter, and the problem of monitoring failure caused by crosstalk in the prior art is solved.
Description
Technical Field
The present disclosure relates to the field of motor controllers, and more particularly, to a control system and method for an internal circuit of a motor controller, an electronic device, and a readable storage medium.
Background
In the operation of an electric motor of a vehicle, it is necessary to monitor the operating parameters of all the functional elements of the vehicle that operate in the high voltage domain (e.g., the temperature of the elements in the electric motor), which requires a control system and method for the internal circuitry of the motor controller.
In the prior art, the operating parameters of the functional elements of the vehicle operating in the high-voltage range are monitored by means of a monitoring module operating in the low-voltage range.
The high voltage domain and the low voltage domain are two independent voltage domains, and the voltage of the functional element operating in the high voltage domain is typically in the range of 0V to 800V, and the voltage of the functional element operating in the low voltage domain is typically in the range of 0V to 24V.
In implementing the present application, the inventors found that at least the following problems exist in the prior art: the monitoring module working in the low voltage domain is used for monitoring the operation parameters of the functional elements working in the high voltage domain of the vehicle by collecting the operation parameters of the functional elements working in the high voltage domain of the vehicle, and the functional elements working in the high voltage domain generate crosstalk on the signals of the operation parameters collected by the monitoring module working in the low voltage domain, so that the monitoring is invalid.
Disclosure of Invention
The application aims to provide a control system, a control method, electronic equipment and a readable storage medium of an internal circuit of a motor controller, at least solving the problem that in the prior art, a monitoring module working in a low-voltage domain generates crosstalk to signals of the operation parameters collected by a monitoring module working in a low-voltage domain due to the fact that the functional element working in the high-voltage domain generates crosstalk to signals of the operation parameters collected by the monitoring module working in the low-voltage domain in the process of monitoring the operation parameters of the functional element working in the high-voltage domain by collecting the operation parameters of the functional element working in the high-voltage domain.
In order to solve the technical problems, the application is realized as follows:
in a first aspect, embodiments of the present application provide a control system for an internal circuit of a motor controller, the system including:
the device comprises a high-voltage domain power supply module, an acquisition module, a high-voltage domain micro-control module and a power module;
the high-voltage domain power supply module is used for providing direct current for the acquisition module, the high-voltage domain micro-control module and the power module;
the acquisition module is used for acquiring first operation parameters of a first functional element in all the functional elements of the vehicle and sending the first operation parameters to the high-voltage domain micro-control module; the voltage of the first functional element and the voltage of the acquisition module are in the same high-voltage domain voltage range;
The high-voltage domain micro control module is used for sending a first output adjustment instruction to the power module under the condition that the first operation parameter is abnormal;
the power module is used for converting the direct current provided by the high-voltage domain power supply module into alternating current and outputting the alternating current to a motor of the vehicle; and adjusting the state of the alternating current according to the first output adjusting instruction, so that the first operation parameter is recovered to be normal.
Optionally, the first functional element comprises an element in an electric machine and a first high voltage domain element in a power module; the high-voltage domain micro-control module is specifically configured to send a first output adjustment instruction to the power module when the first operation parameter is higher than a parameter threshold, where the first output adjustment instruction is specifically configured to reduce power of alternating current output to a motor of the vehicle.
Optionally, the collection module is specifically configured to collect a first temperature of a first high-voltage domain element in the power module and send the first temperature to the high-voltage domain micro-control module; the high-voltage domain micro-control module is specifically configured to send a first output reduction instruction to the power module when the first temperature is greater than a first temperature threshold; the power module is specifically configured to reduce the power of the alternating current according to the first output reduction instruction, so that the first temperature is less than or equal to the first temperature threshold.
Optionally, the acquisition module is specifically configured to acquire a second temperature of an element in the motor and send the second temperature to the high-voltage domain micro-control module; the high-voltage domain micro-control module is specifically configured to send a second output reduction instruction to the power module when the second temperature is greater than a second temperature threshold; the power module is specifically configured to reduce the power of the alternating current according to the second output reduction instruction, so that the second temperature is less than or equal to the second temperature threshold.
Optionally, the system further comprises a dc support capacitor; the high-voltage domain power supply module is specifically used for charging the direct-current support capacitor; the direct current support capacitor is used for providing direct current for the power module through discharging; the power module is specifically used for converting direct current provided by the direct current support capacitor into alternating current and outputting the alternating current to a motor of the vehicle.
Optionally, the system further comprises a discharge control module; the voltage of the discharge control module and the voltage of the direct current support capacitor are in the same high voltage domain voltage range; the discharging control module is used for collecting the discharging state of the direct-current supporting capacitor and sending the discharging state to the high-voltage domain micro-control module; under the condition that a first discharge stopping instruction sent by the high-voltage domain micro control module is received, controlling the direct-current supporting capacitor to stop discharging so as to protect the discharge control module to work in a safe temperature range; the high-voltage domain micro-control module is further configured to send the first discharge stopping instruction to the discharge control module when the discharge state is abnormal.
Optionally, the acquisition module is further configured to acquire a first voltage of the dc support capacitor and send the first voltage to the high voltage domain micro control module; the voltage of the acquisition module and the voltage of the direct current support capacitor are in the same high voltage domain voltage range; the high-voltage domain micro-control module is further used for sending a power supply stopping instruction to the power module under the condition that the first voltage is larger than a voltage threshold value; the power module is also used for stopping outputting the alternating current to the motor under the condition that the power supply stopping instruction is received.
Optionally, the system further comprises a low-voltage domain power supply module, a power management integrated circuit module, a low-voltage domain micro control module and a rotation-variation signal processing module; the low-voltage domain power supply module is used for providing direct current for the rotary-change signal processing module; the power management integrated circuit module is used for providing direct current for the low-voltage domain micro control module; the rotary-transformer signal processing module is used for collecting the position information of the rotor of the motor and sending the position information of the rotor to the low-voltage domain micro-control module; the low-voltage domain micro-control module is used for sending a second output adjustment instruction to the power module according to the position information of the rotor; the power module is also used for adjusting the state of the alternating current according to the second output adjustment instruction, so that the motor is in a normal working state.
Optionally, the system further comprises a terminal voltage monitoring module; the terminal voltage monitoring module is used for collecting second voltage of a second high-voltage domain element in the power module and sending the second voltage to the high-voltage domain micro-control module; the voltage of the terminal voltage monitoring module and the second voltage are in the same high-voltage domain voltage range; the high-voltage domain micro-control module is used for obtaining the position information of the rotor according to the second voltage under the condition that the rotation signal processing module is abnormal; and transmitting position information of the rotor to the low voltage domain micro control module through serial peripheral interface communication.
Optionally, the system further comprises a high side driving power supply, a high side gate driving module, a low side driving power supply and a low side gate driving module; the low-voltage domain power supply module is also used for providing direct current for the high-side driving power supply and the low-side driving power supply; the high-side driving power supply is used for converting the voltage of the direct current provided by the low-voltage domain power supply module into a first target voltage required by the high-side gate driving module and providing the direct current with the voltage being the first target voltage for the high-side gate driving module; the high-side gate driving module is used for driving an upper three bridge of the power module by using direct current with the voltage being a first target voltage; the low-side driving power supply is used for converting the voltage of the direct current provided by the low-voltage domain power supply module into a second target voltage required by the low-side gate driving module and providing the direct current with the voltage being the second target voltage for the low-side gate driving module; the low-side gate driving module is used for driving a lower three-bridge of the power module by using the direct current with the voltage being a second target voltage.
Optionally, the system further comprises a phase current monitoring module; the low-voltage domain power supply module is also used for providing direct current for the phase current monitoring module, the acquisition module, the high-voltage domain micro-control module and the power module; the phase current monitoring module is used for collecting phase current information of the motor; and sending the phase current information to the low voltage domain micro control module; the low-voltage domain micro-control module is further used for sending a first driving control instruction to the high-side gate driving module and sending a second driving control instruction to the low-side gate driving module according to the position information of the rotor and the phase current information; the high-side gate driving module is specifically configured to drive an upper three bridge of the power module according to the first driving control instruction by using the direct current with the voltage being a first target voltage; the low-side gate driving module is specifically configured to drive a lower three-bridge of the power module according to the second driving control instruction by using the direct current with the voltage being a second target voltage.
Optionally, the system further comprises a drive logic module; the power management integrated circuit module is also used for providing direct current for the driving logic module; the low-voltage domain micro-control module is specifically configured to send the first driving control instruction and the second driving control instruction to the driving logic module according to the position information of the rotor and the phase current information; the driving logic module is used for forwarding the first driving control instruction to the high-side gate driving module and forwarding the second driving control instruction to the low-side gate driving module.
Optionally, the high-voltage domain power supply module is further configured to provide direct current for the high-side driving power supply and the low-side driving power supply; the low-voltage domain micro-control module is further used for sending the position information of the rotor and the phase current information to the high-voltage domain micro-control module through serial peripheral equipment interface communication; the high-voltage domain micro control module is further used for sending a third driving control instruction and a fourth driving control instruction to the driving logic module according to the position information of the rotor and the phase current information; the driving logic module is further configured to forward the third driving control instruction to the high-side gate driving module and forward the fourth driving control instruction to the low-side gate driving module when the low-voltage domain micro-control module is abnormal; the high-side gate driving module is specifically configured to drive an upper three bridge of the power module according to the third driving control instruction by using the direct current with the voltage being the first target voltage; the low-side gate driving module is specifically configured to drive a lower three-bridge of the power module according to the fourth driving control instruction by using the direct current with the voltage being the second target voltage.
Optionally, the high-voltage domain micro-control module interacts with the high-voltage domain power supply module in a digital control manner; the low-voltage domain micro-control module interacts with the low-voltage domain power supply module in a digital control mode.
In a second aspect, embodiments of the present application further provide a method for controlling an internal circuit of a motor controller, where the method includes:
converting the direct current provided by the high-voltage domain power supply module into alternating current through the power module, and outputting the alternating current to a motor of the vehicle;
collecting first operation parameters of a first functional element in all the functional elements of the vehicle through an collecting module; the voltage of the first functional element and the voltage of the acquisition module are in the same high-voltage domain voltage range;
and under the condition that the first operation parameter is abnormal, adjusting the state of the alternating current so as to enable the first operation parameter to be recovered to be normal.
In a third aspect, embodiments of the present application further provide an electronic device comprising a processor, a memory and a program or instruction stored on the memory and executable on the processor, the program or instruction implementing the steps of the method according to the second aspect when executed by the processor.
In a fourth aspect, embodiments of the present application also provide a readable storage medium having stored thereon a program or instructions which, when executed by a processor, implement the steps of the method according to the second aspect.
Aiming at the prior art, the application has the following advantages:
the control system of the internal circuit of the motor controller comprises a high-voltage domain power supply module, an acquisition module, a high-voltage domain micro-control module and a power module; the high-voltage domain power supply module is used for providing direct current for the acquisition module, the high-voltage domain micro-control module and the power module; the acquisition module is used for acquiring first operation parameters of a first functional element in all the functional elements of the vehicle and sending the first operation parameters to the high-voltage domain micro-control module; the voltage of the first functional element and the voltage of the acquisition module are in the same high-voltage domain voltage range; the high-voltage domain micro control module is used for sending a first output adjustment instruction to the power module under the condition that the first operation parameter is abnormal; the power module is used for converting the direct current provided by the high-voltage domain power supply module into alternating current and outputting the alternating current to a motor of the vehicle; the state of the alternating current is regulated according to the first output regulation command, so that the first operation parameter is recovered to be normal, the operation parameter of the functional element working in the high voltage domain of the vehicle is monitored, and the crosstalk generated by the first functional element to the signal of the first operation parameter collected by the collection module is avoided because the voltage of the first functional element and the voltage of the collection module are in the same high voltage domain voltage range, the monitoring effect of the first operation parameter is ensured, and the problem that the monitoring failure is caused because the signal of the operation parameter collected by the monitoring module working in the low voltage domain is generated by the functional element working in the high voltage domain of the vehicle in the process of monitoring the operation parameter of the functional element working in the high voltage domain by collecting the operation parameter of the functional element working in the high voltage domain of the vehicle is solved.
The foregoing description is only an overview of the technical solutions of the present application, and may be implemented according to the content of the specification in order to make the technical means of the present application more clearly understood, and in order to make the above-mentioned and other objects, features and advantages of the present application more clearly understood, the following detailed description of the present application will be given.
Drawings
Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The drawings are only for purposes of illustrating the preferred embodiments and are not to be construed as limiting the application. Also, like reference numerals are used to designate like parts throughout the figures. In the drawings:
fig. 1 is a schematic diagram of a control system of an internal circuit of a motor controller according to an embodiment of the present application;
fig. 2 is a schematic structural diagram of a control system of an internal circuit of a motor controller according to an embodiment of the present application;
fig. 3 is a schematic diagram of the internal structures of a high-voltage domain output sub-module and a low-voltage domain power supply module of a control system of an internal circuit of a motor controller according to an embodiment of the present application;
fig. 4 is a step flowchart of a control method of an internal circuit of a motor controller according to an embodiment of the present application;
Fig. 5 is a schematic hardware structure of an electronic device according to an embodiment of the present application.
Detailed Description
The following description of the embodiments of the present application will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are some, but not all, of the embodiments of the present application. All other embodiments, which can be made by one of ordinary skill in the art based on the embodiments herein without making any inventive effort, are intended to be within the scope of the present application.
The terms first, second and the like in the description and in the claims, are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged, as appropriate, such that embodiments of the present application may be implemented in sequences other than those illustrated or described herein, and that the objects identified by "first," "second," etc. are generally of a type and not limited to the number of objects, e.g., the first object may be one or more. Furthermore, in the description and claims, "and/or" means at least one of the connected objects, and the character "/", generally means that the associated object is an "or" relationship.
Referring to fig. 1, an embodiment of the present application provides a control system for an internal circuit of a motor controller, the system including: the device comprises a high-voltage domain power supply module, an acquisition module, a high-voltage domain micro-control module and a power module; the high-voltage domain power supply module is used for providing direct current for the acquisition module, the high-voltage domain micro-control module and the power module; the acquisition module is used for acquiring first operation parameters of a first functional element in all the functional elements of the vehicle and sending the first operation parameters to the high-voltage domain micro-control module; the voltage of the first functional element and the voltage of the acquisition module are in the same high-voltage domain voltage range; the high-voltage domain micro control module is used for sending a first output adjustment instruction to the power module under the condition that the first operation parameter is abnormal; the power module is used for converting the direct current provided by the high-voltage domain power supply module into alternating current and outputting the alternating current to a motor of the vehicle; and adjusting the state of the alternating current according to the first output adjusting instruction, so that the first operation parameter is recovered to be normal.
The control system of the internal circuit of the motor controller can be realized, and the high-voltage domain power supply module provides direct current for the acquisition module, the high-voltage domain micro-control module and the power module; the acquisition module acquires first operation parameters of a first functional element in all the functional elements of the vehicle and sends the first operation parameters to the high-voltage domain micro-control module; the voltage of the first functional element and the voltage of the acquisition module are in the same high-voltage domain voltage range; the high-voltage domain micro control module sends a first output adjustment instruction to the power module under the condition that the first operation parameter is abnormal; the power module converts the direct current provided by the high-voltage domain power supply module into alternating current and outputs the alternating current to a motor of the vehicle; the state of the alternating current is regulated according to the first output regulation command, so that the first operation parameter is recovered to be normal, the operation parameter of the functional element working in the high voltage domain of the vehicle is monitored, and the crosstalk generated by the first functional element to the signal of the first operation parameter collected by the collection module is avoided because the voltage of the first functional element and the voltage of the collection module are in the same high voltage domain voltage range, the monitoring effect of the first operation parameter is ensured, and the problem that the monitoring failure is caused because the signal of the operation parameter collected by the monitoring module working in the low voltage domain is generated by the functional element working in the high voltage domain of the vehicle in the process of monitoring the operation parameter of the functional element working in the high voltage domain by collecting the operation parameter of the functional element working in the high voltage domain of the vehicle is solved.
Specifically, in some embodiments, the high voltage domain power module, the acquisition module, the high voltage domain micro control module, and the power module are all in the internal circuitry of the motor controller. The high-voltage domain power supply module works in a high-voltage domain and comprises a high-voltage storage battery, a high-voltage domain filtering sub-module and a high-voltage domain output sub-module, wherein the high-voltage storage battery is a storage battery for outputting high voltage, for example, the output voltage of the high-voltage storage battery is 380V, 750V and the like; the high-voltage storage battery is connected with the high-voltage domain filtering submodule, and the high-voltage domain filtering submodule is connected with the high-voltage domain output submodule; the high-voltage domain filtering submodule filters common mode noise and differential mode noise generated by the high-voltage domain output submodule, which are transmitted to the high-voltage storage battery, so that electromagnetic interference to the high-voltage storage battery is reduced; the control system of the internal circuit of the motor controller also comprises a direct-current supporting capacitor, and the high-voltage domain filtering sub-module is connected with the direct-current supporting capacitor, so that direct current provided by the high-voltage storage battery is input into the direct-current supporting capacitor to charge the direct-current supporting capacitor; the direct-current support capacitor is connected with the power module to provide direct current for the power module, the power module converts the direct current into alternating current, and the alternating current is output to a motor of the vehicle; the high-voltage domain filtering submodule is connected with the high-voltage domain output submodule and provides high-voltage domain noise reduction direct current for the high-voltage domain output submodule; the high-voltage domain output sub-module is divided into a first output sub-module and a second output sub-module, wherein the first output sub-module is connected with the acquisition module and provides direct current for the acquisition module; the second output sub-module is connected with the high-voltage domain micro-control module and provides direct current for the high-voltage domain micro-control module.
Optionally, in some embodiments, the control system of the internal circuit of the motor controller further includes a first power supply monitoring module, a second power supply monitoring module; the first power supply monitoring module is used for cutting off a first circuit for providing direct current for the acquisition module under the condition that the state of the direct current output by the first output sub-module is abnormal, so that the first output sub-module stops providing the direct current for the acquisition module; the second power supply monitoring module is used for cutting off a second circuit for providing direct current for the high-voltage domain micro-control module under the condition that the state of the direct current output by the second output sub-module is abnormal, so that the second output sub-module stops providing direct current for the high-voltage domain micro-control module, and the power supply safety of the acquisition module and the high-voltage domain micro-control module is ensured.
It should be noted that the high-voltage domain micro control module may be "MCU (Micro Control Unit )", or may be a controller such as "single chip microcomputer", "ARM (Advanced RISC Machines, RISC microprocessor, RISC is Reduced Instruction Set Computer, i.e., a reduced instruction set computer)", "DSP chip (Digital Signal Process, digital signal processing)", "ASIC (Application Specific Integrated Circuit )", "CPLD (Complex Programmable logic device, complex programmable logic device)", "FPGA (Field Programmable Gate Array )", or the like.
Optionally, in some embodiments, the first functional element comprises an element in an electric machine and a first high voltage domain element in a power module; the high-voltage domain micro-control module is specifically configured to send a first output adjustment instruction to the power module when the first operation parameter is higher than a parameter threshold, where the first output adjustment instruction is specifically configured to reduce power of alternating current output to a motor of the vehicle.
According to the embodiment of the application, under the condition that the first operation parameter is higher than the parameter threshold, the power of alternating current output to the motor of the vehicle is reduced, so that the working power of an internal circuit of the motor controller and the power of the motor are reduced, the operation parameter is lower than or equal to the parameter threshold, and therefore the operation parameter is lower than or equal to the parameter threshold under the condition that the operation parameter is higher than the parameter threshold, and the normal operation is recovered.
Optionally, in some embodiments, the acquisition module may include a motor temperature acquisition sub-module that acquires temperatures of elements in the motor of the vehicle and a power module temperature acquisition sub-module that acquires temperatures of elements in the power module.
Optionally, in some embodiments, the acquisition module is specifically configured to acquire a first temperature of a first high voltage domain element in the power module and send the first temperature to the high voltage domain micro-control module; the high-voltage domain micro-control module is specifically configured to send a first output reduction instruction to the power module when the first temperature is greater than a first temperature threshold; the power module is specifically configured to reduce the power of the alternating current according to the first output reduction instruction, so that the first temperature is less than or equal to the first temperature threshold.
The embodiment of the application can realize that the acquisition module acquires the first temperature of the first high-voltage domain element in the power module, and the high-voltage domain micro-control module sends a first output reducing instruction to the power module under the condition that the first temperature is larger than a first temperature threshold value, and the power module reduces the power of alternating current according to the first output reducing instruction so as to reduce the working power of the power module, thereby reducing the first temperature, enabling the first temperature to be smaller than or equal to the first temperature threshold value, and ensuring that the first high-voltage domain element in the power module works in a safe temperature environment; in the process, the first high-voltage domain element in the acquisition module and the power module work in the same high-voltage domain voltage range, so that the problem that the first high-voltage domain element in the power module generates crosstalk to the signal of the first temperature acquired by the acquisition module does not exist, and the temperature of the first high-voltage domain element in the power module is effectively monitored.
Specifically, in some embodiments, the acquisition module acquires the first temperature by acquiring a temperature signal of an NTC (Negative Temperature Coefficient ) temperature sensor that monitors the first temperature of the first high voltage domain element in the power module.
Optionally, in some embodiments, the acquisition module is specifically configured to acquire a second temperature of an element in the motor and send the second temperature to the high voltage domain micro-control module; the high-voltage domain micro-control module is specifically configured to send a second output reduction instruction to the power module when the second temperature is greater than a second temperature threshold; the power module is specifically configured to reduce the power of the alternating current according to the second output reduction instruction, so that the second temperature is less than or equal to the second temperature threshold.
The method can be realized by the embodiment of the application, and the acquisition module acquires the second temperature of the element in the motor and sends the second temperature to the high-voltage domain micro-control module; the high-voltage domain micro control module sends a second output reducing instruction to the power module under the condition that the second temperature is larger than a second temperature threshold value; the power module reduces the power of alternating current according to the second output reducing instruction so as to reduce the working power of the elements of the motor, thereby reducing the second temperature, enabling the second temperature to be smaller than or equal to a second temperature threshold value and ensuring that the elements in the motor work in a safe temperature environment; in the process, the acquisition module and the elements in the motor work in the same high-voltage domain voltage range, so that the problem that the elements in the motor generate crosstalk to the signals of the second temperature acquired by the acquisition module does not exist, and the temperature of the elements in the motor is effectively monitored.
Specifically, in some embodiments, the acquisition module acquires the second temperature by acquiring a temperature signal of an NTC temperature sensor that monitors a second temperature of an element in the motor, which may be a motor winding.
Optionally, in some embodiments, the system further comprises a dc support capacitor; the high-voltage domain power supply module is specifically used for charging the direct-current support capacitor; the direct current support capacitor is used for providing direct current for the power module through discharging; the power module is specifically used for converting direct current provided by the direct current support capacitor into alternating current and outputting the alternating current to a motor of the vehicle.
Through this application embodiment can realize, high voltage domain power supply module charges for direct current supporting capacitor, and direct current supporting capacitor provides direct current for power module through discharging, and power module is with direct current conversion to alternating current, to the motor output of vehicle alternating current, direct current supporting capacitor play the effect of power supply buffering, has guaranteed power module's power supply validity.
The connection relationship between the DC supporting capacitor and the high voltage domain power supply module is similar to that described above, and will not be repeated here, wherein the DC supporting capacitor is a DC-Link capacitor.
Optionally, in some embodiments, the system further comprises a discharge control module; the voltage of the discharge control module and the voltage of the direct current support capacitor are in the same high voltage domain voltage range; the discharging control module is used for collecting the discharging state of the direct-current supporting capacitor and sending the discharging state to the high-voltage domain micro-control module; under the condition that a first discharge stopping instruction sent by the high-voltage domain micro control module is received, controlling the direct-current supporting capacitor to stop discharging so as to protect the discharge control module to work in a safe temperature range; the high-voltage domain micro-control module is further configured to send the first discharge stopping instruction to the discharge control module when the discharge state is abnormal.
It should be noted that, the abnormal discharging of the dc supporting capacitor may be that the discharging task is not completed within the preset time threshold, and the discharging task may be that the voltage of the dc supporting capacitor is discharged below the preset safe voltage threshold. The current discharged by the direct current support capacitor passes through the inside of the discharge control module, and under the condition that the discharge state of the direct current support capacitor is abnormal, namely under the condition that the preset time threshold range is exceeded, the direct current support capacitor is still discharged, the current of the direct current support capacitor continuously passes through the inside of the discharge control module to continuously generate heat, so that the temperature inside the discharge control module is continuously increased, and when the temperature inside the discharge control module exceeds the safety temperature range of the discharge control module, the discharge control module is damaged by heat.
The embodiment of the application can realize that the discharging control module collects the discharging state of the direct-current supporting capacitor and sends the discharging state to the high-voltage domain micro-control module; the high-voltage domain micro control module sends a first discharge stopping instruction to the discharge control module under the condition that the discharge state is abnormal, and the discharge control module controls the direct-current support capacitor to stop discharging under the condition that the discharge stopping instruction sent by the high-voltage domain micro control module is received, so that the discharge control module is protected to work in a safe temperature range, and the possibility of thermal damage of the discharge control module caused by internal high temperature is reduced; in the process, the discharging control module and the direct current support capacitor work in the same high voltage domain voltage range, so that the problem that the direct current support capacitor generates crosstalk to the discharging state signals collected by the discharging control module does not exist, the discharging state of the direct current support capacitor is effectively monitored, and meanwhile, the high voltage domain micro control module, the discharging control module and the direct current support capacitor work in the same high voltage domain voltage range, a first discharging stopping instruction sent by the high voltage domain micro control module to the discharging control module and a control signal used for controlling the direct current support capacitor to stop discharging are sent by the discharging control module to the direct current support capacitor, and the signal delay problem caused by isolation conversion required by signal transmission of different voltage domains does not exist.
Optionally, in some embodiments, the control system of the motor controller internal circuit further comprises a power management integrated circuit (PMIC, power Management integrated circuit) module, a low voltage domain micro control module, a CAN (Controller Area Network, controller domain network) communication module, an SPI (Serial Peripheral Interface ) communication module, a digital signal communication module; the power management integrated circuit module is used for providing direct current for the low-voltage domain micro control module and the CAN communication module; the high-voltage domain power supply module is also used for providing direct current for the SPI communication module and the digital signal communication module; the CAN communication module is used for forwarding a discharge instruction from the whole vehicle controller to the low-voltage domain micro-control module; the SPI communication module is used for forwarding state information of the high-voltage domain micro-control module to the low-voltage domain micro-control module; the high-voltage domain micro control module is used for sending state information of the high-voltage domain micro control module to the SPI communication module; the low-voltage domain micro control module is used for receiving the state information of the high-voltage domain micro control module forwarded by the SPI communication module; when the state information of the high-voltage domain micro control module is abnormal and a discharge instruction sent by the CAN communication module is received, forwarding the discharge instruction to the digital signal communication module; the digital signal communication module is used for forwarding a discharge instruction to the discharge control module; the low-voltage domain micro control module is also used for forwarding the discharge instruction to the SPI communication module when the state information of the voltage domain micro control module is that the high-voltage domain micro control module is normal and the discharge instruction sent by the CAN communication module is received; the SPI communication module is also used for forwarding a discharge instruction to the high-voltage domain micro-control module; the high-voltage domain micro-control module is also used for forwarding the discharge instruction to the discharge control module under the condition of receiving the discharge instruction; the discharging control module is used for controlling the discharging of the direct current supporting capacitor under the condition of receiving the discharging instruction so as to provide direct current for the power module.
It should be noted that, the power management integrated circuit module, the low voltage domain micro control module, and the CAN communication module all work in the low voltage domain, the SPI communication module, the digital signal communication module, and the high voltage domain micro control module all work in the high voltage domain, in this process, the SPI communication module and the digital signal communication module use digital signal transmission to realize the phenomenon of avoiding crosstalk when the functional element working in the high voltage domain sends a signal to the functional element working in the low voltage domain, and the low voltage domain micro control module and the high voltage domain micro control module provide a primary and backup form of assurance for the discharging task of the dc support capacitor.
Optionally, in some embodiments, the acquisition module is further configured to acquire a first voltage of the dc support capacitor and send the first voltage to the high voltage domain micro-control module; the voltage of the acquisition module and the voltage of the direct current support capacitor are in the same high voltage domain voltage range; the high-voltage domain micro-control module is further used for sending a power supply stopping instruction to the power module under the condition that the first voltage is larger than a voltage threshold value; the power module is also used for stopping outputting the alternating current to the motor under the condition that the power supply stopping instruction is received.
The embodiment of the application can realize that the acquisition module acquires the first voltage of the direct-current support capacitor and sends the first voltage to the high-voltage domain micro-control module; the high-voltage domain micro control module sends a power supply stopping instruction to the power module under the condition that the first voltage is larger than a voltage threshold value; under the condition that a power supply stopping instruction is received, the power module stops outputting alternating current for the motor, so that the motor works in a safe alternating current environment; in the process, the acquisition module and the direct current support capacitor work in the same high-voltage domain voltage range, so that the problem that the direct current support capacitor generates crosstalk to the signal of the first voltage acquired by the acquisition module is solved, the problem of signal delay caused by isolation conversion required by signal transmission of different voltage domains is solved, and the voltage of the direct current support capacitor is effectively monitored.
Optionally, in some embodiments, the system further comprises a low voltage domain power module, a power management integrated circuit module, a low voltage domain micro control module, and a rotational-change signal processing module; the low-voltage domain power supply module is used for providing direct current for the rotary-change signal processing module; the power management integrated circuit module is used for providing direct current for the low-voltage domain micro control module; the rotary-transformer signal processing module is used for collecting the position information of the rotor of the motor and sending the position information of the rotor to the low-voltage domain micro-control module; the low-voltage domain micro-control module is used for sending a second output adjustment instruction to the power module according to the position information of the rotor; the power module is also used for adjusting the state of the alternating current according to the second output adjustment instruction, so that the motor is in a normal working state.
The method can be realized by the embodiment of the application, and the rotary-transformer signal processing module acquires the position information of the rotor of the motor and sends the position information of the rotor to the low-voltage domain micro-control module; the low-voltage domain micro control module sends a second output adjustment instruction to the power module according to the position information of the rotor; and the power module is used for enabling the motor to be in a normal working state by adjusting the state of the alternating current according to the second output adjustment instruction so as to realize the control function of the motor controller on the normal operation of the motor.
Specifically, in some embodiments, the state of the alternating current, that is, the current direction of the alternating current, is adjusted, so that the magnetic field inside the motor changes, and the rotor of the motor is ensured to rotate in the same direction, that is, the motor is in a normal working state.
Optionally, in some embodiments, the system further comprises a terminal voltage monitoring module; the terminal voltage monitoring module is used for collecting second voltage of a second high-voltage domain element in the power module and sending the second voltage to the high-voltage domain micro-control module; the voltage of the terminal voltage monitoring module and the second voltage are in the same high-voltage domain voltage range; the high-voltage domain micro-control module is used for obtaining the position information of the rotor according to the second voltage under the condition that the rotation signal processing module is abnormal; and transmitting position information of the rotor to the low voltage domain micro control module through serial peripheral interface communication.
The terminal voltage monitoring module acquires the second voltage of the second high-voltage domain element in the power module and sends the second voltage to the high-voltage domain micro-control module; the high-voltage domain micro control module obtains the position information of the rotor according to the second voltage under the condition that the rotation signal processing module is abnormal; and transmitting the position information of the rotor to the low voltage domain micro control module through serial peripheral interface communication; the low-voltage domain micro control module sends a second output adjustment instruction to the power module according to the position information of the rotor; the power module enables the motor to be in a normal working state by adjusting the state of alternating current according to the second output adjustment instruction, so that the control effect of the motor controller on the normal operation of the motor is realized, and the low-voltage domain micro-control module can continuously control the motor to be in the normal working state according to the position information of the rotor sent by the high-voltage domain micro-control module under the condition that the rotary-transformer signal processing module is abnormal and the position information of the rotor cannot be sent, so that the double guarantee that the motor is controlled to be in the normal working state by the low-voltage domain micro-control module is realized; in the process, the voltage of the terminal voltage monitoring module and the second voltage are in the same high-voltage domain voltage range, namely, the terminal voltage monitoring module and the second high-voltage domain element work in the same high-voltage domain voltage range, so that the problem that crosstalk is generated on the second voltage signal acquired by the second high-voltage domain element terminal voltage monitoring module is solved, the problem that signal delay is generated due to the fact that signal transmission in different voltage domains needs to be isolated and converted is solved, and the voltage of the second high-voltage domain element is effectively monitored.
Specifically, in some embodiments, the second high voltage domain element is a three-phase inverter of the power module, and the second voltage is three terminal voltages of the three-phase inverter; the control system of the internal circuit of the motor controller also comprises an SPI communication module; the high-voltage domain power supply module is also used for providing direct current for the SPI communication module; the SPI communication module is used for forwarding the state information of the rotary-change signal processing module to the high-voltage domain micro-control module; the low-voltage domain micro control module is used for sending state information of the rotation-transformation signal processing module to the SPI communication module; the high-voltage domain micro control module is used for receiving the state information of the rotary-change signal processing module forwarded by the SPI communication module; under the condition that the state information of the rotation signal processing module is abnormal, acquiring the position information of the rotor according to the second voltage; and sending the position information of the rotor to the low-voltage domain micro-control module through the SPI communication module.
Optionally, in some embodiments, the system further comprises a high side drive power supply, a high side gate drive module, a low side drive power supply, and a low side gate drive module; the low-voltage domain power supply module is also used for providing direct current for the high-side driving power supply and the low-side driving power supply; the high-side driving power supply is used for converting the voltage of the direct current provided by the low-voltage domain power supply module into a first target voltage required by the high-side gate driving module and providing the direct current with the voltage being the first target voltage for the high-side gate driving module; the high-side gate driving module is used for driving an upper three bridge of the power module by using direct current with the voltage being a first target voltage; the low-side driving power supply is used for converting the voltage of the direct current provided by the low-voltage domain power supply module into a second target voltage required by the low-side gate driving module and providing the direct current with the voltage being the second target voltage for the low-side gate driving module; the low-side gate driving module is used for driving a lower three-bridge of the power module by using the direct current with the voltage being a second target voltage.
Through the embodiment of the application, the high-side gate driving module drives the upper three bridges of the power module by using the direct current with the voltage being the first target voltage, and the low-side gate driving module drives the lower three bridges of the power module by using the direct current with the voltage being the second target voltage, so that the upper three bridges and the lower three bridges of the power module are driven.
Optionally, in some embodiments, the control system of the internal circuit of the motor controller further includes a third power supply monitoring module and a fourth power supply monitoring module; the low-voltage domain power supply module comprises a third output sub-module and a fourth output sub-module; the third output sub-module is used for providing direct current for the high-side driving power supply; the fourth output sub-module is used for providing direct current for the low-side driving power supply; the third power supply monitoring module is used for cutting off a third circuit for providing direct current for the high-side driving power supply under the condition that the state of the direct current output by the third output sub-module is abnormal, so that the third output sub-module stops providing the direct current for the high-side driving power supply; the fourth power supply monitoring module is used for cutting off a fourth circuit for providing direct current for the low-side driving power supply under the condition that the state of the direct current output by the fourth output sub-module is abnormal, so that the fourth output sub-module stops providing the direct current for the low-side driving power supply, and the power supply safety of the high-side driving power supply and the low-side driving power supply is ensured.
Optionally, in some embodiments, the system further comprises a phase current monitoring module; the low-voltage domain power supply module is also used for providing direct current for the phase current monitoring module, the acquisition module, the high-voltage domain micro-control module and the power module; the phase current monitoring module is used for collecting phase current information of the motor; and sending the phase current information to the low voltage domain micro control module; the low-voltage domain micro-control module is further used for sending a first driving control instruction to the high-side gate driving module and sending a second driving control instruction to the low-side gate driving module according to the position information of the rotor and the phase current information; the high-side gate driving module is specifically configured to drive an upper three bridge of the power module according to the first driving control instruction by using the direct current with the voltage being a first target voltage; the low-side gate driving module is specifically configured to drive a lower three-bridge of the power module according to the second driving control instruction by using the direct current with the voltage being a second target voltage.
According to the embodiment of the application, the high-side gate driving module drives the upper three bridges of the power module by using direct current with the voltage being the first target voltage according to the first driving control instruction; the low-side gate electrode driving module drives a lower three bridge of the power module by using direct current with the voltage being a second target voltage according to a second driving control instruction so as to realize driving and control of the upper three bridge and the lower three bridge of the power module; the low-voltage domain power supply module is used for providing direct current for the acquisition module, the high-voltage domain micro-control module and the power module, so that the normal power supply of the acquisition module, the high-voltage domain micro-control module and the power module is ensured under the condition that the high-voltage domain power supply module is abnormal.
Optionally, in some embodiments, the system further comprises a drive logic module; the power management integrated circuit module is also used for providing direct current for the driving logic module; the low-voltage domain micro-control module is specifically configured to send the first driving control instruction and the second driving control instruction to the driving logic module according to the position information of the rotor and the phase current information; the driving logic module is used for forwarding the first driving control instruction to the high-side gate driving module and forwarding the second driving control instruction to the low-side gate driving module.
According to the embodiment of the application, the first driving control instruction is forwarded to the high-side gate driving module through the driving logic module, and the second driving control instruction is forwarded to the low-side gate driving module, so that the instruction transfer function is realized, and the expandability of instruction logic judgment is provided.
Optionally, in some embodiments, the high voltage domain power module is further configured to provide direct current to the high side drive power supply and the low side drive power supply; the low-voltage domain micro-control module is further used for sending the position information of the rotor and the phase current information to the high-voltage domain micro-control module through serial peripheral equipment interface communication; the high-voltage domain micro control module is further used for sending a third driving control instruction and a fourth driving control instruction to the driving logic module according to the position information of the rotor and the phase current information; the driving logic module is further configured to forward the third driving control instruction to the high-side gate driving module and forward the fourth driving control instruction to the low-side gate driving module when the low-voltage domain micro-control module is abnormal; the high-side gate driving module is specifically configured to drive an upper three bridge of the power module according to the third driving control instruction by using the direct current with the voltage being the first target voltage; the low-side gate driving module is specifically configured to drive a lower three-bridge of the power module according to the fourth driving control instruction by using the direct current with the voltage being the second target voltage.
According to the embodiment of the application, under the condition that the low-voltage domain micro control module is abnormal, the high-side gate electrode driving module drives an upper three bridge of the power module by using direct current with voltage being the first target voltage according to a third driving control instruction, and the low-side gate electrode driving module drives a lower three bridge of the power module by using direct current with voltage being the second target voltage according to a fourth driving control instruction, so that driving and driving control of the upper three bridge and the lower three bridge of the power module are realized; meanwhile, a main form and a standby form are ensured for the function of driving control of an upper three bridge and a lower three bridge of the power module through the driving logic module; in addition, the high-voltage domain power supply module is used for supplying direct current to the high-side driving power supply and the low-side driving power supply, so that normal power supply for the high-side driving power supply and the low-side driving power supply is ensured under the condition that the low-voltage domain power supply module is abnormal.
Specifically, in some embodiments, the control system of the internal circuit of the motor controller further comprises a digital signal communication module; the high-voltage domain power supply module is also used for providing direct current for the digital signal communication module; the state information of the low-voltage domain micro control module is obtained through serial peripheral equipment interface communication; the high-voltage domain micro control module is specifically used for sending a third driving control instruction and a fourth driving control instruction to the digital signal communication module according to the position information of the rotor and the phase current information; the digital signal communication module is used for forwarding a third driving control instruction and a fourth driving control instruction to the driving logic module; the driving logic module is specifically configured to forward the third driving control instruction to the high-side gate driving module and forward the fourth driving control instruction to the low-side gate driving module when the state information of the low-voltage domain micro control module is that the low-voltage domain micro control module is abnormal and cannot generate the first driving control instruction and the second driving control instruction.
Optionally, in some embodiments, the high voltage domain micro control module interacts with the high voltage domain power supply module by way of digital control; the low-voltage domain micro-control module interacts with the low-voltage domain power supply module in a digital control mode.
According to the embodiment of the application, the high-voltage domain micro-control module interacts with the high-voltage domain power supply module in a digital control mode, and the low-voltage domain micro-control module interacts with the low-voltage domain power supply module in a digital control mode, so that the control process of the digital power supply is realized.
Optionally, in some embodiments, the control system of the internal circuit of the motor controller further includes a low-voltage storage battery and a low-voltage domain filtering module, the low-voltage storage battery is connected with the low-voltage domain filtering module, the low-voltage domain filtering module is connected with the low-voltage domain power supply module, the low-voltage domain filtering module is connected with the power management integrated circuit module, and the low-voltage storage battery is a storage battery outputting a low voltage, for example, the output voltage of the low-voltage storage battery is 0V to 14V; the low-voltage domain filtering module filters common mode noise and differential mode noise which are transmitted to the low-voltage storage battery and are generated by the low-voltage domain power supply module and the power management integrated circuit module, so that electromagnetic interference to the low-voltage storage battery is reduced.
Optionally, in some embodiments, the low-voltage domain power supply module and the high-voltage domain output sub-module are both switching power converters, the low-voltage domain filtering module and the high-voltage domain filtering sub-module are both filters, the low-voltage storage battery is connected with the low-voltage domain filtering module, the low-voltage domain filtering module is connected with the low-voltage domain power supply module, and the low-voltage storage battery provides direct current for the low-voltage domain power supply module; the high-voltage storage battery is connected with the high-voltage domain filtering submodule, the high-voltage domain filtering submodule is connected with the high-voltage domain output submodule, and the high-voltage storage battery provides direct current for the high-voltage domain output submodule.
In the related art, the switching power converter adopts a control method of pulse width modulation (PWM, pulse width modulation) and operates at a certain fixed frequency. Because the switching frequency of the switching power converter is high, the switching power converter generates strong electromagnetic interference through the transmission line and the external space, for example, the switching power converter generates electromagnetic interference on a storage battery connected with the switching power converter through the transmission line. In the related art, electromagnetic interference of a switching power converter is reduced by providing a filter at an input terminal of the switching power converter. However, the higher the switching frequency of the switching power converter, the greater the electromagnetic interference, and the larger the filter size required, resulting in an increase in the production cost.
In the embodiment of the application, a low-voltage domain power supply module feeds back first voltage information and first current information in the low-voltage domain power supply module to a low-voltage domain micro-control module; the low-voltage domain micro-control module sends a first pulse width modulation instruction (a PWM signal) to the low-voltage domain power supply module according to the first voltage information and the first current information, modulates the low-voltage domain power supply module (namely, the switching power supply converter) so that the low-voltage domain power supply module does not work at a certain fixed frequency but works in a certain frequency range, and electromagnetic interference signals generated by the low-voltage domain power supply module are not concentrated on a certain fixed frequency but are expanded into a certain frequency range (namely, a wider frequency band) to reduce electromagnetic interference of the low-voltage domain power supply module to the low-voltage storage battery.
Similarly, the high-voltage domain output sub-module feeds back second voltage information and second current information in the high-voltage domain output sub-module to the high-voltage domain micro-control module; the high-voltage domain micro-control module sends a second pulse width modulation instruction (a PWM signal) to the high-voltage domain output submodule according to the second voltage information and the second current information, and modulates the high-voltage domain output submodule (namely, the switching power supply converter) so that the high-voltage domain output submodule does not work at a certain fixed frequency but works in a certain frequency range, and electromagnetic interference signals generated by the high-voltage domain output submodule are not concentrated on a certain fixed frequency but are expanded into a certain frequency range (namely, a wider frequency band) to reduce electromagnetic interference of the high-voltage domain output submodule to the high-voltage storage battery.
Optionally, in some embodiments, referring to fig. 2, a control system of an internal circuit of a motor controller of an embodiment of the present application includes (1) a low voltage domain filtering module: namely an EMI (Electromagnetic Interference ) filter for filtering common mode noise and differential mode noise generated by the low voltage domain power module and the power management integrated circuit module, which are transmitted to the low voltage storage battery, so as to reduce electromagnetic interference to the low voltage storage battery; (2) a high voltage domain filtering submodule: the EMI filter is used for filtering common mode noise and differential mode noise generated by the high-voltage domain output submodule which are transmitted to the high-voltage storage battery, and electromagnetic interference to the high-voltage storage battery is reduced. (3) a power management integrated circuit module: the PMIC module is used for converting, distributing, detecting and managing power in the motor controller control system, supplying power to a plurality of loads, managing overvoltage, undervoltage, overcurrent, thermal fault, dormancy, awakening and other conditions of each path of load power supply, and also selecting SPI or serial port communication function according to requirements. (4) The high voltage domain output sub-module and the low voltage domain power supply module: the high-voltage domain output sub-module and the low-voltage domain micro-control module jointly construct a low-voltage domain digital power supply, and the low-voltage domain power supply module and the high-voltage domain micro-control module jointly construct a high-voltage domain digital power supply; (5) power supply monitoring module 2: the second power supply monitoring module is used for carrying out overvoltage, undervoltage, overcurrent and short-circuit protection on the voltage output by the high-voltage domain output submodule; (6) power supply monitoring module 1: the first power supply monitoring module is used for carrying out overvoltage, undervoltage, overcurrent and short-circuit protection on the voltage output by the high-voltage domain output submodule; (7), power supply monitoring module 4: the fourth power supply monitoring module is used for carrying out overvoltage, undervoltage, overcurrent and short-circuit protection on the voltage output by the low-voltage domain power supply module; (8) power supply monitoring module 3: the third power supply monitoring module is used for carrying out overvoltage, undervoltage, overcurrent and short-circuit protection on the voltage output by the low-voltage domain power supply module; (9) a drive logic module: the control module is used for processing a driving control instruction (a PWM signal), wherein the driving control instruction is from a high-voltage domain micro-control module and a low-voltage domain micro-control module; (10) a domain network communication module: the CAN communication module is a communication interface between the motor controller and the whole vehicle controller, has a wake-up function of any frame or specific frame to enable the PMIC module to enter a working state, and in addition, the switch 15 (KL 15 switch) CAN also enable the wake-up PMIC module to enable the PMIC module to enter the working state; (11) a cooling liquid temperature acquisition module: the method comprises the steps of collecting and conditioning signals of a cooling liquid temperature sensor, and transmitting the signals to a low-voltage domain micro-control module for transmission to the low-voltage domain micro-control module to control the temperature of the cooling liquid; (12) a terminal voltage monitoring module: collecting and conditioning three terminal voltage signals of a three-phase inverter in a power module in a high-voltage domain, and transmitting the signals to a high-voltage domain micro-control module; and (13) a bus voltage acquisition module: the voltage signal acquisition and conditioning module is used for acquiring and conditioning voltage signals of the DC-Link capacitor in a high-voltage domain and transmitting the signals to the high-voltage domain micro-control module; (14) low side drive power supply: the voltage conversion module is used for converting the voltages of the high-voltage domain output sub-module and the low-voltage domain power supply module into voltages for supplying to the low-side gate electrode driving module; (15) high side drive power supply: the voltage conversion circuit is used for converting the voltages of the high-voltage domain output sub-module and the low-voltage domain power supply module into voltages for supplying to the high-side gate electrode driving module; (16) a rotational signal processing module: the motor rotor comprises a rotary excitation circuit and an SIN/COS feedback signal sampling and conditioning circuit, wherein the rotary excitation circuit and the SIN/COS feedback signal sampling and conditioning circuit are used for monitoring the position of a motor rotor; (17) a low voltage domain micro control module: the microcontroller in the low-voltage domain is used for realizing the functions of monitoring, controlling, communicating and the like for the low-voltage domain of each module; (18) an interface communication module: SPI communication module, i.e. application specific integrated SPI isolation communication device or high-speed digital isolation device. The SPI communication module is used for (17) SPI communication between the low-voltage domain micro control module and the high-voltage domain micro control module; (19) a high voltage domain micro control module: and the microcontroller in the high-voltage domain is used for realizing the functions of monitoring, controlling, communicating and the like for the high-voltage domain of each module.
In addition, the control system of the internal circuit of the motor controller according to the embodiment of the application further comprises: (20) a low side gate drive module: the power module is used for receiving a control signal from the driving logic module, driving the lower three bridges of the power module, realizing overvoltage and undervoltage protection of driving power supply, and performing short circuit protection on the power module; (21) a high side gate drive module: the power module is used for receiving a control signal from the driving logic module, driving an upper three bridge of the power module, realizing overvoltage and undervoltage protection of driving power supply, and performing short circuit protection on the power module; (22) a fault detection module: the fault signals generated by the partial modules are received, wherein the fault signals comprise overvoltage and undervoltage fault signals from the low-side gate driving module and the high-side gate driving module, overvoltage, undervoltage and overtemperature protection signals from the power supply monitoring module 1, the power supply monitoring module 3 and the power supply monitoring module 4, overcurrent signals from the bus current and phase current acquisition modules and faults are fed back to the low-voltage domain micro-control module and the high-voltage domain micro-control module; (23) a bus current and phase current acquisition module: the system is used for collecting and conditioning signals of the bus current sensor and the phase current sensor and transmitting the signals to the low-voltage domain micro-control module and the fault detection module; (24) a digital signal communication module: the multi-channel digital isolation device is used for realizing the transmission between the low-voltage domain related digital signals and the high-voltage domain related digital signals; (25) a discharge control module: the DC-Link capacitor is used for performing discharging operation on the DC-Link capacitor and ensuring that the bus voltage is discharged below the safety voltage specified by the standard in a certain time; the device comprises a feedback part and a control part, wherein a feedback signal is directly fed back to a high-voltage domain micro-control module for detecting a discharge state; the control part is respectively controlled by direct driving of the high-voltage domain micro-control module and indirect driving of the low-voltage domain micro-control module; (26) a power module temperature acquisition sub-module: the power module is used for collecting and conditioning the signals of the temperature sensor in the power module and transmitting the signals to the high-voltage domain micro-control module for monitoring; (27) a motor temperature acquisition sub-module: the system is used for collecting and conditioning signals of an NTC temperature sensor buried in a motor winding and transmitting the signals to a high-voltage domain micro-control module for monitoring; (28) a power module: for the hardware of a single motor controller of an electric automobile, the module is formed by assembling and integrally packaging 6 IGBT (Insulated Gate Bipolar Transistor ) power semiconductor chips into a three-phase inverter module; the module converts direct current in the battery of the electric automobile into alternating current for the power supply machine to use, so that a propulsion system of the electric automobile is driven. In addition, the output (V) of the first output sub-module is correspondingly output to the (5) th circuit; the output (IV) of the second output sub-module is correspondingly output to the (4) th circuit; the output (II) of the third output sub-module is correspondingly output to the (2) th circuit; the output (I) of the fourth output sub-module is correspondingly output to the (1) th circuit; the output (III) of the PMIC module is correspondingly output to the (3) th circuit. The relevant working processes of the control system of the internal circuit of the motor controller in the embodiment of the present application are similar to those described above, and are not repeated here.
Optionally, in some embodiments, referring to fig. 3, the internal structure of the high voltage domain output sub-module and the low voltage domain power supply module includes: (29) primary side circuit module 2: the primary side power circuit of the low-voltage domain power supply module is a component part of a digital power supply, is inseparable from the output circuit module 3, the output power module 4 and the low-voltage domain micro-control module, and can realize primary side current sampling, primary side energy storage, secondary side voltage sampling and energy transmission of the output circuit module 3 and the output circuit module 4 of the low-voltage domain power supply module by matching the components, receives input direct current of the low-voltage domain, and transmits a signal (first current information) of current feedback to the low-voltage domain micro-control module; (30) primary side circuit module 1: the primary side power circuit of the high-voltage domain output sub-module is a component part of a digital power supply, is inseparable with the output circuit module 1, the output power module 2 and the high-voltage domain micro-control module, and can realize primary side current sampling, primary side energy storage, secondary side voltage sampling and energy transmission of the output circuit module 1 and the output circuit module 2 of the high-voltage domain output sub-module by matching the components, receives the input direct current of the high-voltage domain, and transmits a signal (second current information) fed back by the current to the high-voltage domain micro-control module; (31) output circuit module 4: the component part of the output side of the low-voltage domain power supply module supplies power for the low-voltage domain through a diode D1 and a diode D5; (32) output circuit module 3: the components of the output side of the low-voltage domain power supply module realize backup power supply for the high-voltage domain through a diode D3 and a diode D7, and transmit a signal (first voltage information) of voltage feedback to the low-voltage domain micro-control module; (33) output circuit module 2: the component parts of the output side of the high-voltage domain output sub-module supply power for the high-voltage domain through a diode D4 and a diode D8, and transmit a signal (second voltage information) of voltage feedback to the high-voltage domain micro-control module; (34) output circuit module 1: the components of the output side of the high-voltage domain output submodule realize backup power supply for the low-voltage domain through a diode D2 and a diode D6; the first output corresponds to the output (V) of the first output sub-module and is output to the (5) th circuit; the second output corresponds to the output (IV) of the second output sub-module and is output to the (4) th circuit; the third output corresponds to the output (II) of the third output sub-module and is output to the (2) th circuit; the fourth output corresponds to the output (I) of the fourth output sub-module and is output to the (1) th circuit. In addition, the high-voltage domain micro-control module controls the primary side circuit module 1 through PWM signals according to the current feedback signals fed back by the primary side circuit module 1 and the voltage feedback signals fed back by the output circuit module 2, so that the high-voltage domain output sub-module does not work at a certain fixed frequency but works in a certain frequency range, and electromagnetic interference signals generated by the high-voltage domain output sub-module are not concentrated on a certain fixed frequency but are expanded into a certain frequency range (namely, a wider frequency band) to reduce electromagnetic interference of the high-voltage domain output sub-module to the high-voltage storage battery; the low-voltage domain micro-control module controls the primary side circuit module 2 through PWM signals according to the current feedback signals fed back by the primary side circuit module 2 and the voltage feedback signals fed back by the output circuit module 3, so that the low-voltage domain power supply module no longer works at a certain fixed frequency but works in a certain frequency range, and electromagnetic interference signals generated by the low-voltage domain power supply module are not concentrated on a certain fixed frequency but are expanded into a certain frequency range (namely, a wider frequency band) so as to reduce electromagnetic interference of the low-voltage domain power supply module to the low-voltage storage battery. The relevant working processes of the high-voltage domain output sub-module and the low-voltage domain power supply module in the embodiment of the present application are similar to those described above, and are not repeated here.
In summary, the control system of the internal circuit of the motor controller in the embodiment of the application includes a high-voltage domain power supply module, an acquisition module, a high-voltage domain micro-control module and a power module; the high-voltage domain power supply module is used for providing direct current for the acquisition module, the high-voltage domain micro-control module and the power module; the acquisition module is used for acquiring first operation parameters of a first functional element in all the functional elements of the vehicle and sending the first operation parameters to the high-voltage domain micro-control module; the voltage of the first functional element and the voltage of the acquisition module are in the same high-voltage domain voltage range; the high-voltage domain micro control module is used for sending a first output adjustment instruction to the power module under the condition that the first operation parameter is abnormal; the power module is used for converting the direct current provided by the high-voltage domain power supply module into alternating current and outputting the alternating current to a motor of the vehicle; the state of the alternating current is regulated according to the first output regulation command, so that the first operation parameter is recovered to be normal, the operation parameter of the functional element working in the high voltage domain of the vehicle is monitored, and the crosstalk generated by the first functional element to the signal of the first operation parameter collected by the collection module is avoided because the voltage of the first functional element and the voltage of the collection module are in the same high voltage domain voltage range, the monitoring effect of the first operation parameter is ensured, and the problem that the monitoring failure is caused because the signal of the operation parameter collected by the monitoring module working in the low voltage domain is generated by the functional element working in the high voltage domain of the vehicle in the process of monitoring the operation parameter of the functional element working in the high voltage domain by collecting the operation parameter of the functional element working in the high voltage domain of the vehicle is solved.
Fig. 4 is a flowchart of steps of a method for controlling an internal circuit of a motor controller according to an embodiment of the present application, as shown in fig. 4, the method may include:
step 101, converting the direct current provided by the high-voltage domain power supply module into alternating current through the power module, and outputting the alternating current to a motor of the vehicle.
The implementation of this step is similar to the implementation of the control system of the internal circuit of the motor controller described above, and will not be repeated here.
Step 102, a first operation parameter of a first functional element in all the functional elements of the vehicle is acquired through an acquisition module.
The voltage of the first functional element and the voltage of the acquisition module are in the same high-voltage domain voltage range.
The implementation of this step is similar to the implementation of the control system of the internal circuit of the motor controller described above, and will not be repeated here.
And step 103, under the condition that the first operation parameter is abnormal, adjusting the state of the alternating current so as to enable the first operation parameter to be recovered to be normal.
The implementation of this step is similar to the implementation of the control system of the internal circuit of the motor controller described above, and will not be repeated here.
In the embodiment of the application, the direct current provided by the high-voltage domain power supply module is converted into alternating current through the power module, and the alternating current is output to the motor of the vehicle; collecting first operation parameters of a first functional element in all the functional elements of the vehicle through an collecting module; the voltage of the first functional element and the voltage of the acquisition module are in the same high-voltage domain voltage range; under the condition that the first operation parameter is abnormal, the state of alternating current is adjusted, so that the first operation parameter is recovered to be normal, the operation parameter of the functional element working in a high voltage domain of the vehicle is monitored, and because the voltage of the first functional element and the voltage of the acquisition module are in the same high voltage domain voltage range, the problem that the first functional element generates crosstalk to signals of the first operation parameter acquired by the acquisition module does not exist, the monitoring effect of the first operation parameter is ensured, and the problem that the monitoring failure is caused by the fact that the functional element working in the high voltage domain generates crosstalk to signals of the operation parameter acquired by the monitoring module working in a low voltage domain by acquiring the operation parameter of the functional element working in the high voltage domain of the vehicle in the prior art is solved.
Optionally, the embodiment of the present application further provides an electronic device, including a processor, a memory, and a program or an instruction stored in the memory and capable of running on the processor, where the program or the instruction realizes each process of the embodiment of the control method of the internal circuit of the motor controller when executed by the processor, and the process can achieve the same technical effect, so that repetition is avoided, and no description is repeated here.
The electronic device in the embodiment of the application includes the mobile electronic device and the non-mobile electronic device described above.
Fig. 5 is a schematic hardware structure of an electronic device implementing an embodiment of the present application.
The electronic device 200 includes, but is not limited to: radio frequency unit 201, network module 202, audio output unit 203, input unit 204, sensor 205, display unit 206, user input unit 207, interface unit 208, memory 209, and processor 210.
Those skilled in the art will appreciate that the electronic device 200 may further include a power source (e.g., a battery) for providing direct current to the various components, and the power source may be logically connected to the processor 210 through a power management system, so as to perform functions of managing charging, discharging, and managing power consumption through the power management system. The electronic device structure shown in fig. 5 does not constitute a limitation of the electronic device, and the electronic device may include more or less components than shown, or may combine certain components, or may be arranged in different components, which are not described in detail herein.
The processor 210 is configured to convert the direct current provided by the high-voltage domain power supply module into alternating current through the power module, and output the alternating current to a motor of the vehicle;
collecting first operation parameters of a first functional element in all the functional elements of the vehicle through an collecting module; the voltage of the first functional element and the voltage of the acquisition module are in the same high-voltage domain voltage range;
and under the condition that the first operation parameter is abnormal, adjusting the state of the alternating current so as to enable the first operation parameter to be recovered to be normal.
According to the embodiment of the application, the operation parameters of the functional element working in the high voltage domain of the vehicle can be monitored, and because the voltage of the first functional element and the voltage of the acquisition module are in the same high voltage domain voltage range, the problem that the first functional element generates crosstalk to the signal of the first operation parameter acquired by the acquisition module is solved, the monitoring of the first operation parameter is ensured to be effective, and the problem that monitoring failure is caused by the fact that the monitoring module working in the low voltage domain in the prior art monitors the operation parameters of the functional element working in the high voltage domain of the vehicle through acquiring the operation parameters of the functional element working in the high voltage domain is solved.
It should be appreciated that in the embodiment of the present application, the input unit 204 may include a graphics processor (Graphics Processing Unit, GPU) 2041 and a microphone 2042, and the graphics processor 2041 processes image data of still pictures or video obtained by an image capturing device (such as a camera) in a video capturing mode or an image capturing mode. The display unit 206 may include a display panel 2061, and the display panel 2061 may be configured in the form of a liquid crystal display, an organic light emitting diode, or the like. The user input unit 207 includes at least one of a touch panel 2071 and other input devices 2072. The touch panel 2071 is also referred to as a touch screen. The touch panel 2071 may include two parts of a touch detection device and a touch controller. Other input devices 2072 may include, but are not limited to, a physical keyboard, function keys (e.g., volume control keys, switch keys, etc.), a trackball, a mouse, and a joystick, which are not repeated herein.
Memory 209 may be used to store software programs as well as various data. The memory 209 may mainly include a first memory area storing programs or instructions and a second memory area storing data, wherein the first memory area may store an operating system, application programs or instructions (such as a sound playing function, an image playing function, etc.) required for at least one function, and the like. Further, the memory 209 may include volatile memory or nonvolatile memory, or the memory 209 may include both volatile and nonvolatile memory. The nonvolatile Memory may be a Read-Only Memory (ROM), a Programmable ROM (PROM), an Erasable PROM (EPROM), an Electrically Erasable EPROM (EEPROM), or a flash Memory. The volatile memory may be random access memory (Random Access Memory, RAM), static RAM (SRAM), dynamic RAM (DRAM), synchronous DRAM (SDRAM), double Data Rate SDRAM (ddr SDRAM), enhanced SDRAM (Enhanced SDRAM), synchronous DRAM (SLDRAM), and Direct RAM (DRRAM). Memory 209 in embodiments of the present application includes, but is not limited to, these and any other suitable types of memory.
Processor 210 may include one or more processing units; optionally, the processor 210 integrates an application processor that primarily processes operations involving an operating system, user interface, application programs, etc., and a modem processor that primarily processes wireless communication signals, such as a baseband processor. It will be appreciated that the modem processor described above may not be integrated into the processor 210.
The embodiment of the present application further provides a readable storage medium, where a program or an instruction is stored on the readable storage medium, and when the program or the instruction is executed by a processor, the processes of the embodiment of the control method of the internal circuit of the motor controller are implemented, and the same technical effects can be achieved, so that repetition is avoided, and no further description is given here.
Wherein the processor is a processor in the electronic device described in the above embodiment. The readable storage medium includes a computer readable storage medium such as a Read-Only Memory (ROM), a random access Memory (Random Access Memory, RAM), a magnetic disk or an optical disk, and the like.
The embodiment of the application further provides a chip, the chip includes a processor and a communication interface, the communication interface is coupled with the processor, the processor is used for running a program or an instruction, implementing each process of the control method embodiment of the internal circuit of the motor controller, and achieving the same technical effect, so as to avoid repetition, and no further description is provided here.
It should be understood that the chips referred to in the embodiments of the present application may also be referred to as system-on-chip chips, chip systems, or system-on-chip chips, etc.
It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element. Furthermore, it should be noted that the scope of the methods and apparatus in the embodiments of the present application is not limited to performing the functions in the order shown or discussed, but may also include performing the functions in a substantially simultaneous manner or in an opposite order depending on the functions involved, e.g., the described methods may be performed in an order different from that described, and various steps may also be added, omitted, or combined. Additionally, features described with reference to certain examples may be combined in other examples.
From the above description of the embodiments, it will be clear to those skilled in the art that the above-described embodiment method may be implemented by means of software plus a necessary general hardware platform, but of course may also be implemented by means of hardware, but in many cases the former is a preferred embodiment. Based on such understanding, the technical solution of the present application may be embodied essentially or in a part contributing to the prior art in the form of a software product stored in a storage medium (such as ROM/RAM, magnetic disk, optical disk) comprising several instructions for causing a terminal (which may be a mobile phone, a computer, a server, an air conditioner, or a network device, etc.) to perform the method described in the embodiments of the present application.
The embodiments of the present application have been described above with reference to the accompanying drawings, but the present application is not limited to the above-described embodiments, which are merely illustrative and not restrictive, and many forms may be made by those of ordinary skill in the art without departing from the spirit of the present application and the scope of the claims, which are also within the protection of the present application.
Claims (16)
1. A control system for an internal circuit of a motor controller, the system comprising:
the device comprises a high-voltage domain power supply module, an acquisition module, a high-voltage domain micro-control module and a power module;
the high-voltage domain power supply module is used for providing direct current for the acquisition module, the high-voltage domain micro-control module and the power module;
the acquisition module is used for acquiring first operation parameters of a first functional element in all the functional elements of the vehicle and sending the first operation parameters to the high-voltage domain micro-control module; the voltage of the first functional element and the voltage of the acquisition module are in the same high-voltage domain voltage range;
the high-voltage domain micro control module is used for sending a first output adjustment instruction to the power module under the condition that the first operation parameter is abnormal;
the power module is used for converting the direct current provided by the high-voltage domain power supply module into alternating current and outputting the alternating current to a motor of the vehicle; and according to the first output adjustment instruction, the state of the alternating current is adjusted, so that the first operation parameter is recovered to be normal;
the system also comprises a low-voltage domain power supply module, a power management integrated circuit module, a low-voltage domain micro-control module and a rotary-change signal processing module;
The low-voltage domain power supply module is used for providing direct current for the rotary-change signal processing module;
the power management integrated circuit module is used for providing direct current for the low-voltage domain micro control module;
the rotary-transformer signal processing module is used for collecting the position information of the rotor of the motor and sending the position information of the rotor to the low-voltage domain micro-control module;
the low-voltage domain micro-control module is used for sending a second output adjustment instruction to the power module according to the position information of the rotor;
the power module is also used for adjusting the state of alternating current according to the second output adjustment instruction, so that the motor is in a normal working state;
the high voltage domain has a voltage range of 0V to 800V and the low voltage domain has a voltage range of 0V to 24V.
2. The system of claim 1, wherein the first functional element comprises an element in an electric machine and a first high voltage domain element in a power module;
the high-voltage domain micro-control module is specifically configured to send a first output adjustment instruction to the power module when the first operation parameter is higher than a parameter threshold, where the first output adjustment instruction is specifically configured to reduce power of alternating current output to a motor of the vehicle.
3. The system of claim 2, wherein the system further comprises a controller configured to control the controller,
the acquisition module is specifically used for acquiring a first temperature of a first high-voltage domain element in the power module and sending the first temperature to the high-voltage domain micro-control module;
the high-voltage domain micro-control module is specifically configured to send a first output reduction instruction to the power module when the first temperature is greater than a first temperature threshold;
the power module is specifically configured to reduce the power of the alternating current according to the first output reduction instruction, so that the first temperature is less than or equal to the first temperature threshold.
4. The system of claim 2, wherein the system further comprises a controller configured to control the controller,
the acquisition module is specifically used for acquiring a second temperature of an element in the motor and sending the second temperature to the high-voltage domain micro-control module;
the high-voltage domain micro-control module is specifically configured to send a second output reduction instruction to the power module when the second temperature is greater than a second temperature threshold;
the power module is specifically configured to reduce the power of the alternating current according to the second output reduction instruction, so that the second temperature is less than or equal to the second temperature threshold.
5. The system of claim 1, further comprising a dc support capacitor;
the high-voltage domain power supply module is specifically used for charging the direct-current support capacitor;
the direct current support capacitor is used for providing direct current for the power module through discharging;
the power module is specifically used for converting direct current provided by the direct current support capacitor into alternating current and outputting the alternating current to a motor of the vehicle.
6. The system of claim 5, further comprising a discharge control module; the voltage of the discharge control module and the voltage of the direct current support capacitor are in the same high voltage domain voltage range;
the discharging control module is used for collecting the discharging state of the direct-current supporting capacitor and sending the discharging state to the high-voltage domain micro-control module; under the condition that a first discharge stopping instruction sent by the high-voltage domain micro control module is received, controlling the direct-current supporting capacitor to stop discharging so as to protect the discharge control module to work in a safe temperature range;
the high-voltage domain micro-control module is further configured to send the first discharge stopping instruction to the discharge control module when the discharge state is abnormal.
7. The system of claim 5, wherein the system further comprises a controller configured to control the controller,
the acquisition module is also used for acquiring a first voltage of the direct-current support capacitor and sending the first voltage to the high-voltage domain micro-control module; the voltage of the acquisition module and the voltage of the direct current support capacitor are in the same high voltage domain voltage range;
the high-voltage domain micro-control module is further used for sending a power supply stopping instruction to the power module under the condition that the first voltage is larger than a voltage threshold value;
the power module is also used for stopping outputting the alternating current to the motor under the condition that the power supply stopping instruction is received.
8. The system of claim 1, further comprising a terminal voltage monitoring module;
the terminal voltage monitoring module is used for collecting second voltage of a second high-voltage domain element in the power module and sending the second voltage to the high-voltage domain micro-control module; the voltage of the terminal voltage monitoring module and the second voltage are in the same high-voltage domain voltage range;
the high-voltage domain micro-control module is used for obtaining the position information of the rotor according to the second voltage under the condition that the rotation signal processing module is abnormal; and transmitting position information of the rotor to the low voltage domain micro control module through serial peripheral interface communication.
9. The system of claim 1, further comprising a high side drive power supply, a high side gate drive module, a low side drive power supply, and a low side gate drive module;
the low-voltage domain power supply module is also used for providing direct current for the high-side driving power supply and the low-side driving power supply;
the high-side driving power supply is used for converting the voltage of the direct current provided by the low-voltage domain power supply module into a first target voltage required by the high-side gate driving module and providing the direct current with the voltage being the first target voltage for the high-side gate driving module;
the high-side gate driving module is used for driving an upper three bridge of the power module by using direct current with the voltage being a first target voltage;
the low-side driving power supply is used for converting the voltage of the direct current provided by the low-voltage domain power supply module into a second target voltage required by the low-side gate driving module and providing the direct current with the voltage being the second target voltage for the low-side gate driving module;
the low-side gate driving module is used for driving a lower three-bridge of the power module by using the direct current with the voltage being a second target voltage.
10. The system of claim 9, further comprising a phase current monitoring module;
the phase current monitoring module is used for collecting phase current information of the motor; and sending the phase current information to the low voltage domain micro control module;
the low-voltage domain micro-control module is further used for sending a first driving control instruction to the high-side gate driving module and sending a second driving control instruction to the low-side gate driving module according to the position information of the rotor and the phase current information;
the high-side gate driving module is specifically configured to drive an upper three bridge of the power module according to the first driving control instruction by using the direct current with the voltage being a first target voltage;
the low-side gate driving module is specifically configured to drive a lower three-bridge of the power module according to the second driving control instruction by using the direct current with the voltage being a second target voltage.
11. The system of claim 10, further comprising a drive logic module;
the power management integrated circuit module is also used for providing direct current for the driving logic module;
the low-voltage domain micro-control module is specifically configured to send the first driving control instruction and the second driving control instruction to the driving logic module according to the position information of the rotor and the phase current information;
The driving logic module is used for forwarding the first driving control instruction to the high-side gate driving module and forwarding the second driving control instruction to the low-side gate driving module.
12. The system of claim 1, wherein the system further comprises a controller configured to control the controller,
the high-voltage domain power supply module is also used for providing direct current for the high-side driving power supply and the low-side driving power supply;
the low-voltage domain micro control module is also used for sending the position information and the phase current information of the rotor to the high-voltage domain micro control module through serial peripheral equipment interface communication;
the high-voltage domain micro-control module is also used for sending a third driving control instruction and a fourth driving control instruction to the driving logic module according to the position information and the phase current information of the rotor;
the driving logic module is further used for forwarding the third driving control instruction to the high-side gate driving module and forwarding the fourth driving control instruction to the low-side gate driving module under the condition that the low-voltage domain micro-control module is abnormal;
the high-side gate driving module is specifically configured to drive an upper three bridge of the power module according to the third driving control instruction by using the direct current with the voltage being the first target voltage;
The low-side gate driving module is specifically configured to drive a lower three-bridge of the power module according to the fourth driving control instruction by using the direct current with the voltage being the second target voltage.
13. The system of any one of claim 1 to 12, wherein,
the high-voltage domain micro-control module interacts with the high-voltage domain power supply module in a digital control mode;
the low-voltage domain micro-control module interacts with the low-voltage domain power supply module in a digital control mode.
14. A control method of an internal circuit of a motor controller, characterized by being applied to a control system of an internal circuit of a motor controller according to any one of claims 1 to 13, the method comprising:
converting the direct current provided by the high-voltage domain power supply module into alternating current through the power module, and outputting the alternating current to a motor of the vehicle;
collecting first operation parameters of a first functional element in all the functional elements of the vehicle through an collecting module; the voltage of the first functional element and the voltage of the acquisition module are in the same high-voltage domain voltage range;
and under the condition that the first operation parameter is abnormal, adjusting the state of the alternating current so as to enable the first operation parameter to be recovered to be normal.
15. An electronic device comprising a processor, a memory and a program or instruction stored on the memory and executable on the processor, the program or instruction when executed by the processor implementing the steps of the method of controlling the internal circuitry of a motor controller as claimed in claim 14.
16. A readable storage medium having stored thereon a program or instructions which when executed by a processor perform the steps of the method of controlling the internal circuitry of a motor controller as claimed in claim 14.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN116317816A (en) | 2023-06-23 |
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