CN220500487U

CN220500487U - eCDT hybrid power system

Info

Publication number: CN220500487U
Application number: CN202321677366.3U
Authority: CN
Inventors: 卢一少; 陈涛; 曾敏
Original assignee: Yuchaixinlan New Energy Power Technology Co ltd
Current assignee: Yuchaixinlan New Energy Power Technology Co ltd
Priority date: 2023-06-29
Filing date: 2023-06-29
Publication date: 2024-02-20
Anticipated expiration: 2033-06-29

Abstract

The utility model provides an eCDT hybrid power system, and belongs to the technical field of new energy. The eCDT hybrid power system is a hybrid power system adopting double motors, double planets and two gear rows, and consists of an engine, two motors, a DMCU, two sets of planetary gear systems and a battery management system BMS. During the use, battery management system BMS monitors the module voltage and the temperature of storage battery, is responsible for managing storage battery, including battery safety, residual electric quantity SOC calculation, charge-discharge process control, parameter monitoring, is responsible for power assembly's high-voltage electricity safety to feedback fault code gives HTCU, is responsible for handshake, discernment, the confirmation process with ground fills electric pile, realizes external function of charging, and this eCDT hybrid power system is sensitive to monitoring such as storage battery's voltage, temperature, charge-discharge process control, parameter monitoring, avoids the condition of storage battery damage, has improved storage battery's life.

Description

eCDT hybrid power system

Technical Field

The utility model relates to the field of new energy, in particular to an eCDT hybrid power system.

Background

Vehicles have been used as a fast-paced, efficient riding aid in life, and their number has been increasing year by year in recent years. Most of traditional vehicles use fossil fuels (such as gasoline, diesel oil and the like) to provide power for an engine, and exhaust gas discharged by the traditional vehicles can pollute the environment and does not meet the requirements of energy conservation and environmental protection. Therefore, there is a need to use pollution-free new energy sources (such as electrical energy) to power vehicles instead of fossil fuels. The prior art provides a hybrid powertrain suitable for a vehicle comprising: engine, clutch and motor. The engine is sequentially connected with the clutch and the gearbox through the main shaft, and the motor is connected to the main shaft. When the vehicle is in need of gear shifting, two groups of gears which are not meshed in the gearbox are mutually meshed through switching, so that different transmission ratios are formed between an input gear and an output gear in the gearbox, and gear shifting and speed changing of the vehicle are realized. In the process of charging by connecting the current new energy (such as electric energy) automobile with a charging pile, the condition of damage of the storage battery pack often occurs due to insensitivity to the voltage, temperature, charging and discharging process control, parameter monitoring and the like of the storage battery pack, and the service life of the storage battery pack is reduced.

Disclosure of Invention

In order to solve the defects in the technology, the application provides an eCDT hybrid power system, which is actually used for improving the problem that the condition of damage of a storage battery pack often occurs due to insensitive monitoring of the voltage, temperature, charge-discharge process control, parameter monitoring and the like of the storage battery pack in the process of charging by connecting a charging pile of a current new energy (such as electric energy) automobile.

The utility model is realized in the following way:

the utility model provides an eCPT hybrid power system which adopts a double-motor double-planet two-gear row hybrid power system, and consists of an engine, two motors, a DMCU, two sets of planetary gear systems and a battery management system BMS, wherein an EM1 and an EM2 are arranged on two sides of a central shaft in parallel, a gear ring is connected with an output shaft for outputting hybrid power, free switching between an electric drive system and the engine is realized through each locking mechanism, the eCPT system adopts a layered control mode, a control unit HTCU is an eCPT system integrated controller, torque distribution of the engine, EM1 and EM2 is determined by receiving a driver command signal of the DMCU, a vehicle controller VCU and part states fed back by the eCPT system part controllers, a gear is selected, a mode is switched, the eCPVT system part controllers complete specified operation according to requirements of the BMS and the HTCU, the part states are fed back to the HTCU, the engine is controlled by an engine control system ECU, and the engine is controlled by the HTCU to a central separation bearing CPCA.

In an embodiment of the present application, the whole vehicle controller VCU is responsible for controlling the power supply (high-voltage power battery pack and 24V common storage battery), accessories (steering, inflating, air-conditioning, defrosting, etc.), and the main functions of failure control of the whole vehicle, and is a central control unit of the whole control system, the VCU is used as a central control unit of the new energy vehicle, and is the core of the whole control system, collects the motor and battery states, collects the accelerator pedal signals, the brake pedal signals, the executor and the sensor signals, and monitors the actions of the controllers of the components of the lower layer after making corresponding decisions according to the comprehensive analysis of the intention of the driver, and is responsible for normal running of the vehicle, braking energy feedback, energy management of the whole vehicle driving system and the power battery, network management, fault diagnosis and treatment, and vehicle state monitoring, thereby ensuring the normal and stable operation of the whole vehicle under the conditions of better power, higher economy and reliability.

In an embodiment of the present application, the eCVT system integrated controller is an integrated controller of a hybrid powertrain controller HTCU and an automatic transmission controller TCU, and is responsible for managing functions of the whole powertrain, and controlling main functions of powertrain wake-up, engine start or stop, torque distribution, and failure control of the eCVT system.

In an embodiment of the present application, the dmeu receives a torque and enable instruction of the HTCU and a motor rotor phase signal, controls on-off of a plurality of IGBTs to control a current direction and a current magnitude, sends out a specified torque, controls operation of EM1 and EM2, and also collects temperatures of windings of EM1 and EM2 and cooling water, determines a current fault condition of the motor, and feeds back to the HTCU.

In an embodiment of the application, battery management system BMS monitors the module voltage and the temperature of storage battery, is responsible for managing storage battery, including storage battery safety, residual electric quantity SOC calculation, charge-discharge process control, parameter monitoring, is responsible for the high-voltage electricity safety of power assembly, carries out high-voltage electricity on, off, precharge control function through receiving HTCU instruction to feed back fault code to HTCU, is responsible for handshake, discernment, the confirmation process with ground charging stake, realizes external charging function.

In one embodiment of the application, the engine control system ECU is responsible for engine operation control, receiving instructions from the HTCU to control the engine's operating modes (start, stop, operating point), fault diagnostics, and failure control.

In an embodiment of the present application, the CPCA automatically controls the separation and combination of the clutch according to the instruction of the HTCU, so as to realize intelligent control of the clutch, the HTCU of the integrated controller of the eCVT system can be compatible with the VCU of the whole vehicle controller, and the specification is written in a form of the HTCU compatible with the VCU according to the matching requirement of the whole vehicle factory.

In an embodiment of the application, the IGBT is an insulated gate bipolar transistor, is a composite fully-controlled voltage driven power semiconductor device formed by a bipolar triode and an insulated gate field effect transistor, has the advantages of both high input impedance of the metal oxide semiconductor field effect transistor and low conduction voltage drop of the power transistor, reduces GTR saturation voltage, has high current carrying density, but has larger driving current, small MOSFET driving power, high switching speed, but has large conduction voltage drop, has small current carrying density, integrates the advantages of the two devices, has small driving power and reduced saturation voltage, and is very suitable for being applied to converter systems with direct current voltage of six hundred V or more, such as alternating current motors, frequency converters, switching power supplies, lighting circuits and traction transmission.

In one embodiment of the application, the ECU of the engine control system is a comprehensive control device of the engine, and functions to perform operation, processing, judgment and then output instructions on various information input by various sensors of the engine according to a program stored in the ECU, control related executors to act, so as to achieve the purpose of quickly, accurately and automatically controlling the engine to work.

In one embodiment of the present application, the automatic gearbox controller TCU, that is, an automatic gearbox control unit, is commonly used in AMT, AT, DCT, CVT automatic gearboxes, where the TCU is composed of a 16-bit or 32-bit processor, a signal processing circuit, and a power driving module, and to pass a strict electromagnetic compatibility test, the operating temperature depends on the installation location, and is usually installed in a cockpit, and the required temperature level is lower, -40-90 degrees, and if the operating temperature is installed in an engine cockpit, the temperature level is usually-40-140 degrees, and the engine torque is controlled through the CAN bus and ECU, ABS/ESP, and BCU vehicle computer communication, so as to limit the gear, and implement the limp home function when the gearbox fails.

The beneficial effects of the utility model are as follows: when the eCDT hybrid power system is used, the VCU of the whole vehicle controller is responsible for controlling a power supply (a high-voltage power battery pack and a 24V common storage battery), accessories (steering, inflating, air conditioning, defrosting and the like) and the main functions of failure control of the whole vehicle, the VCU is used as a new energy vehicle central control unit, and is the core of the whole control system, the VCU collects a motor and a battery state, collects an accelerator pedal signal, a brake pedal signal, an executor and a sensor signal, and comprehensively analyzes and makes corresponding judgment according to the intention of a driver, monitors the actions of each component controller of the lower layer, is responsible for normal running of the vehicle, braking energy feedback, energy management of a whole vehicle driving system and a power battery, network management, fault diagnosis and processing, vehicle state monitoring, thereby ensuring normal and stable work of the whole vehicle under the conditions of better power performance, higher economy and reliability, the ECVT system integrated controller is an integrated controller of the hybrid power assembly controller and an automatic transmission controller TCU, and is responsible for waking up the whole power assembly, the HTCU or HTCU is assigned with a temperature control winding, the current of the storage battery, the temperature control system is assigned to a control winding of the motor, the temperature of the storage battery is assigned to the current of the current control system is controlled by a control module, the current is assigned to the current of the current control and the current control module is assigned to the current collector, and the current is assigned to the current control and the current control module is assigned to the current collector, and the current control is assigned to the current control system is controlled by the current is 1 and has a control system is assigned to control and has a control function is assigned to control and has a failure to control function, the high-voltage power system comprises storage battery safety, residual electric quantity SOC calculation, charge-discharge process control and parameter monitoring, is responsible for high-voltage electric safety of a power assembly, performs high-voltage electric connection, disconnection and precharge control functions by receiving HTCU instructions, feeds back fault codes to the HTCU, is responsible for handshake, identification and confirmation processes with ground charging piles, and realizes an external charging function.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings that are needed in the embodiments will be briefly described below, it being understood that the following drawings only illustrate some examples of the present utility model and therefore should not be considered as limiting the scope, and other related drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

Fig. 1 is a system block diagram of an eCVT hybrid system provided by the present utility model.

Detailed Description

In order to make the objects, technical solutions and advantages of the present application more apparent, the present application will be further described in detail with reference to examples.

It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the present application.

Examples

Referring to fig. 1, the present utility model provides a technical solution: the utility model provides an eCDT hybrid power system is the hybrid power system that adopts two motor double planetary gear to arrange, comprises engine, two motors, DMCU, two sets of planetary gear system and battery management system BMS, its characterized in that: the EM1 and the EM2 are arranged on two sides of a central shaft in parallel, the gear ring is connected with an output shaft for outputting hybrid power, free switching of an electric drive system and an engine is realized through each locking mechanism, the eCPT system adopts a layered control mode, the control unit HTCU is an eCPT system integrated controller, torque distribution of the engine, the EM1 and the EM2 is determined by receiving driver command signals of the DMCU and the VCU and component states fed back by the eCPT system component controllers, gear selection and mode switching operation are realized, the eCPT system component controllers complete specified operation according to the requirements of the BMS and the HTCU and feed back the component states to the HTCU, the HTCU feeds back the component states to the VCU, the engine is controlled by an engine control system ECU, the HTcontrol central separation bearing CPCA is borne by the whole vehicle controller VCU, and the whole power assembly management function, the main functions of a power supply (a high-voltage power battery pack and a 24V common storage battery), accessories (steering, inflating, air conditioning, defrosting and the like) and the failure control of the whole vehicle are responsible;

the VCU is used as a central control unit of a new energy vehicle and is the core of the whole control system, the VCU collects motor and battery states, collects accelerator pedal signals, brake pedal signals, actuators and sensor signals, and monitors the actions of the lower part component controllers after corresponding judgment is made according to the intention comprehensive analysis of a driver, the VCU is responsible for normal running of the vehicle, braking energy feedback, energy management of a whole vehicle driving system and a power battery, network management, fault diagnosis and processing and vehicle state monitoring, thereby ensuring normal and stable operation of the whole vehicle under the conditions of better power performance, higher economy and reliability, the ECVT system integrated controller is an integrated controller of a hybrid power assembly controller HTCU and an automatic transmission controller TCU, and is responsible for managing the whole power assembly, controlling the power assembly, engine starting or stopping, torque distribution and an ECVT system failure control main function, the DMCU receives the torque and a enabling command and a motor rotor phase signal of the DMCU, controls the on-off of a multi-channel IGBT to control the current direction and the current magnitude, and sends a designated torque, the control module is responsible for controlling the control of the DMEU to a high temperature and HTCU, the HTCU is responsible for the high-temperature and the full-charge and high-charge battery charge and high-discharge state, the charge and high-voltage charge and the storage battery charge/discharge safety control system is realized by a charge-to a charge-discharge control module, and a charge-discharge safety control module is responsible for a charge module, a charge-discharge control module is responsible for a charge-to realize, and a charge-discharge control module for a charge-discharge control system is responsible for a charge-to realize charge-discharge control system, charge-has a charge-to realize charge-discharge control function, the engine control system ECU is in charge of controlling the operation of the engine, and receives instructions of the HTCU to control the working mode (starting, stopping and operating points), fault diagnosis and failure control of the engine;

the CPCA automatically controls the separation and combination of the clutch according to the instruction of the HTCU to realize the intelligent control of the clutch, the HTCU of the eCDT system integrated controller can be compatible with the VCU of the whole vehicle, the specification is written in a form of the HTCU compatible VCU according to the matching requirement of the whole vehicle factory, the IGBT is an insulated gate bipolar transistor and is a composite full-control voltage-driven power semiconductor device consisting of a bipolar transistor and an insulated gate field effect transistor, the advantages of the high input impedance of the metal oxide semiconductor field effect transistor and the low conduction voltage drop of the power transistor are both realized, the GTR saturation voltage is reduced, the current-carrying density is high, the driving current is large, the MOSFET driving power is small, the switching speed is high, the conduction voltage drop is large, the current-carrying density is small, the IGBT integrates the advantages of the two devices, the driving power is small and the saturation voltage is reduced, the ECU of the engine control system is an integrated control device of the engine, and has the functions of calculating, processing, judging and then outputting instructions to control related executors according to programs stored in the ECU, so as to achieve the aim of quickly, accurately and automatically controlling the engine to work, when the engine is started, an electronic control unit enters a working state, certain programs and steps are taken out from a ROM and enter a CPU, the programs can be used for controlling the ignition moment, controlling the gasoline injection and controlling the idle speed, the instructions are circulated one by the control of the CPU, engine information required in the programs is executed, signals from the sensors firstly enter an input loop, processing the signals, such as digital signals, directly entering microcomputer through I/O interface according to CPU arrangement, such as analog signals, after being converted into digital signals through A/D converter, entering microcomputer through I/O interface, most of information is temporarily stored in RAM, then sent to CPU from RAM according to instruction, next reference data in memory ROM is introduced into CPU, information input to sensor is compared with it, each signal from related sensor is sampled in turn and compared with reference data, CPU makes decision and sends out output instruction signal after comparing operation of the data, amplified through I/O interface, necessary signal is changed into analog signal through D/A converter, finally, the action of an actuator is controlled through an output loop, the automatic gearbox controller TCU, namely an automatic gearbox control unit, is commonly used for AMT, AT, DCT, CVT automatic gearboxes, consists of a 16-bit or 32-bit processor, a signal processing circuit and a power driving module, and is required to have a lower temperature level of-40-90 degrees depending on the installation position, is usually installed in a cockpit, is usually-40-140 degrees if installed in the engine cabin, is communicated with an ECU (electronic control unit), an ABS (analog to digital)/ESP (electronic control unit) and a BCU (binary electric control unit) vehicle-mounted computer through a CAN (controller area network) bus, controls the engine torque when the gearbox fails, limits the gear, and realizes the limp home function.

Specifically, the working principle of the eCDT hybrid power system is as follows: when in use, the whole vehicle controller VCU bears the management function of the whole power assembly and is responsible for controlling the main functions of a power supply (a high-voltage power battery pack and a 24V common storage battery), accessories (steering, inflating, air conditioning, defrosting and the like) and the failure control of the whole vehicle, the VCU is used as a central control unit of the whole control system, is the core of the whole control system, collects the states of a motor and a battery, collects signals of an accelerator pedal, signals of a brake pedal, signals of an actuator and signals of a sensor, and monitors the actions of the controllers of all the parts at the lower layer after corresponding judgment is made according to the comprehensive analysis of the intention of a driver, and is responsible for normal running, braking energy feedback, energy management, network management, failure diagnosis and processing of the whole vehicle driving system and the power battery and vehicle state monitoring, thereby ensuring the normal and stable operation of the whole vehicle under the conditions of better power, higher economy and reliability, the integrated controller of the eCPT system is an integrated controller of a hybrid power assembly controller HTCU and an automatic gearbox controller TCU, is responsible for managing the whole power assembly, is responsible for controlling main functions of power assembly awakening, engine starting or stopping, torque distribution and eCPT system fault failure control, the DMCU receives torque and enabling instructions of the HTCU and motor rotor phase signals, controls multi-path IGBT on-off to control current direction and current magnitude, sends out appointed torque, controls the operation of EM1 and EM2, the DMCU also collects the temperatures of EM1 and EM2 windings and cooling water, judges the current fault condition of the motor and feeds back to the HTCU, a battery management system BMS monitors the module voltage and temperature of a battery pack, is responsible for managing the battery pack, and comprises battery safety, residual electric quantity SOC calculation and charge-discharge process control, parameter monitoring is responsible for high-voltage electric safety of a power assembly, high-voltage electric connection, disconnection and precharge control functions are executed by receiving an HTCU instruction, fault codes are fed back to the HTCU, handshake, identification and confirmation processes of the HTCU and a ground charging pile are responsible for realizing an external charging function, and the eCDT hybrid power system is sensitive to monitoring voltage, temperature, charging and discharging process control, parameter monitoring and the like of a storage battery pack, avoids the damage condition of the storage battery pack, and prolongs the service life of the storage battery pack.

The foregoing is merely exemplary embodiments of the present application and is not intended to limit the scope of the present application, and various modifications and variations may be suggested to one skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application should be included in the protection scope of the present application. It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further definition or explanation thereof is necessary in the following figures.

Claims

1. The utility model provides an eCPT hybrid power system, its hybrid power system that adopts two motor double planetary gear two gear rows comprises engine, two motors, DMCU, two sets of planetary gear system and battery management system BMS, its characterized in that: the EM1 and the EM2 are arranged on two sides of a central shaft in parallel, the gear ring is connected with an output shaft for outputting hybrid power, the free switching of an electric drive system and an engine is realized through each locking mechanism, the eCDT system adopts a layered control mode, the control unit HTCU is an eCDT system integrated controller, the torque distribution of the engine, the EM1 and the EM2 is determined by receiving driver command signals of the DMCU and the whole vehicle controller VCU and the states of parts fed back by the eCDT system part controllers, and the gear selection and mode switching operation are performed, the eCPT system part controller completes specified operation according to the requirements of the BMS and the HTCU, feeds back part states to the VCU, and the engine is controlled by the engine control system ECU and the HTCU controls the central split bearing CPCA.

2. The eCVT hybrid power system according to claim 1, wherein the whole vehicle controller VCU performs a management function on the whole power assembly, performs a main function of controlling a power supply, an accessory, and a failure control of the whole vehicle, is a central control unit of the whole vehicle, and is a core of the whole control system, the VCU collects a motor and a battery state, collects an accelerator pedal signal, a brake pedal signal, an actuator and a sensor signal, and monitors actions of each component controller of the lower layer after making corresponding decisions according to comprehensive analysis of intention of a driver, and is responsible for normal running of the vehicle, braking energy feedback, energy management of a whole vehicle driving system and a power battery, network management, failure diagnosis and processing, and vehicle state monitoring, thereby ensuring normal and stable operation of the whole vehicle under better power, higher economy and reliability states.

3. The eCVT hybrid system of claim 1, wherein the eCVT system integrated controller is an integrated controller of a hybrid powertrain controller HTCU and an automatic transmission controller TCU, and is responsible for managing functions of the whole powertrain, and for controlling main functions of powertrain wakeup, engine start or stop, torque distribution, and eCVT system failure control.

4. The eCVT hybrid system of claim 1, wherein the DMCU receives a torque and enable command of the HTCU and a motor rotor phase signal, controls multiple IGBTs to turn on and off to control a current direction and a current magnitude, sends out a designated torque, controls operations of EM1 and EM2, and further collects temperatures of windings EM1 and EM2 and cooling water, determines a current fault condition of the motor, and feeds back to the HTCU.

5. The eCVT hybrid power system according to claim 1, wherein the battery management system BMS monitors module voltage and temperature of the battery pack, is responsible for managing the battery pack, including battery safety, residual electric quantity SOC calculation, charge-discharge process control, parameter monitoring, is responsible for high-voltage electric safety of the power assembly, performs high-voltage power on-off and precharge control functions by receiving HTCU commands, feeds back fault codes to the HTCU, is responsible for handshake, identification and confirmation processes with the ground charging pile, and realizes an external charging function.

6. The eCVT hybrid system of claim 1, wherein the engine control system ECU is responsible for engine operation control, and receives instructions from the HTCU to control engine operation mode, fault diagnosis, and failure control.

7. The eCVT hybrid system of claim 6, wherein the ECU is a comprehensive control device of the engine, and functions to calculate, process, judge, and then output instructions for various information input by various sensors of the engine according to a program stored in the ECU, so as to control the related actuators to operate, thereby achieving the purpose of rapidly, accurately and automatically controlling the engine to operate.

8. An eCVT hybrid system according to claim 3, characterized in that the automatic transmission controller TCU, i.e. an automatic transmission control unit, is commonly used for AMT, AT, DCT, CVT automatic transmissions.