CN112389201B - Method and device for controlling balanced emergency power supply of double electrical systems of vehicle - Google Patents

Method and device for controlling balanced emergency power supply of double electrical systems of vehicle Download PDF

Info

Publication number
CN112389201B
CN112389201B CN202011195397.6A CN202011195397A CN112389201B CN 112389201 B CN112389201 B CN 112389201B CN 202011195397 A CN202011195397 A CN 202011195397A CN 112389201 B CN112389201 B CN 112389201B
Authority
CN
China
Prior art keywords
voltage
low
subsystem
output
power generation
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
CN202011195397.6A
Other languages
Chinese (zh)
Other versions
CN112389201A (en
Inventor
郄鹤峰
刘诗逸
魏为民
汪秀秀
杨帆
张衡
刘双平
蒋学锋
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Dongfeng Trucks Co ltd
Original Assignee
Dongfeng Trucks Co ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Dongfeng Trucks Co ltd filed Critical Dongfeng Trucks Co ltd
Priority to CN202011195397.6A priority Critical patent/CN112389201B/en
Publication of CN112389201A publication Critical patent/CN112389201A/en
Application granted granted Critical
Publication of CN112389201B publication Critical patent/CN112389201B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L3/00—Electric devices on electrically-propelled vehicles for safety purposes; Monitoring operating variables, e.g. speed, deceleration or energy consumption
    • B60L3/0023—Detecting, eliminating, remedying or compensating for drive train abnormalities, e.g. failures within the drive train
    • B60L3/0046—Detecting, eliminating, remedying or compensating for drive train abnormalities, e.g. failures within the drive train relating to electric energy storage systems, e.g. batteries or capacitors
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L1/00—Supplying electric power to auxiliary equipment of vehicles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L3/00—Electric devices on electrically-propelled vehicles for safety purposes; Monitoring operating variables, e.g. speed, deceleration or energy consumption
    • B60L3/0023—Detecting, eliminating, remedying or compensating for drive train abnormalities, e.g. failures within the drive train
    • B60L3/0061—Detecting, eliminating, remedying or compensating for drive train abnormalities, e.g. failures within the drive train relating to electrical machines
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Sustainable Energy (AREA)
  • Electric Propulsion And Braking For Vehicles (AREA)
  • Hybrid Electric Vehicles (AREA)

Abstract

The application relates to a method and a device for controlling balanced emergency power supply of a double-electric system of a vehicle, relating to the technical field of electronic control of automobile, wherein the method comprises the following steps: monitoring the working conditions of a high-voltage power supply device corresponding to a high-voltage electrical subsystem and a low-voltage power supply device corresponding to a low-voltage electrical subsystem of a target vehicle; and balancing the energy output direction between the high-voltage electrical subsystem and the low-voltage electrical subsystem by using the high-low voltage conversion DC-DC of the target vehicle according to the working conditions of the high-voltage power supply device and the low-voltage power supply device and in combination with a preset electric balance rule. This application monitors external power generation facility, generator class power generation facility and battery class power supply unit, when the fault condition that corresponds appears, carries out power supply balance control according to the balanced rule of preset electricity to guarantee the normal operating of vehicle.

Description

Method and device for controlling balanced emergency power supply of double electrical systems of vehicle
Technical Field
The application relates to the technical field of electronic control of automobile electronics, in particular to a method and a device for controlling balanced emergency power supply of double electric systems of a vehicle.
Background
In the current field of automobiles, the technology of hybrid electric vehicles is rapidly developing, 48V hybrid electric vehicles are obtained by hybrid development based on traditional automobiles in the current research and development environment, and in order to realize some specific functions of hybrid systems, devices such as Belt drive Starter Generator (BSG) motors are added on the basis of traditional automobiles.
The conventional automobile has no high-voltage component similar to that of the hybrid automobile, and the power Management of the conventional automobile is mainly weak current Management of a 24V/12V low-voltage System, while the power System of the hybrid automobile is compared with the power System of the conventional automobile, on the basis of the former and the latter, complex power electronic devices such as a motor (BSG), a Motor Controller (MCU), a power Battery pack and a Battery Controller (BMS) are added.
For the electrical balance of the traditional vehicle, the relationship among an engine, a storage battery and vehicle electrical appliances is mainly discussed, and when the 48V hybrid electric vehicle has external energy sources such as solar energy or novel energy sources, such as energy sources of tail gas power generation of a TEG tail gas power generation device and the like, the energy management of the whole vehicle electrical system is more complicated. The 24V system and the 48V system are usually considered to be electrically balanced independently and then regulated by using the intermediate 48V to low voltage DC-DC.
Therefore, the electrical balance of the hybrid electric vehicle is still complex, and no safe and reliable solution is available for the control strategy method of the abnormal working conditions in the industry at present, so that a vehicle electrical balance control technology is urgently needed to solve the technical problems.
Disclosure of Invention
The application provides a vehicle double-electrical-system balanced emergency power supply control method and device, which are used for monitoring an external power generation device, a generator type power generation device and a battery type power supply device, and carrying out power supply balance control according to a preset electric balance rule when a corresponding fault state occurs so as to ensure the normal operation of a vehicle.
In a first aspect, the application provides a vehicle dual-electrical-system balanced emergency power supply control method, which includes the following steps:
monitoring the working conditions of a high-voltage power supply device corresponding to a high-voltage electrical subsystem and a low-voltage power supply device corresponding to a low-voltage electrical subsystem of a target vehicle;
according to the working conditions of the high-voltage power supply device and the low-voltage power supply device, in combination with a preset electric balance rule, balancing the energy output direction between the high-voltage electrical subsystem and the low-voltage electrical subsystem by using high-low voltage conversion DC-DC of the target vehicle; wherein,
the high-voltage power supply device comprises a solar power generation device, a BSG motor and a power battery;
the low-voltage power supply device comprises a TEG tail gas power generation device, an intelligent generator and a low-voltage storage battery;
the electrical balancing rules include:
when only the output voltages of the BSG motor and the intelligent generator are not in a preset normal range and the target vehicle is started by the BSG motor dragging an engine, cutting off the energy output from the high-voltage electric subsystem to the low-voltage electric subsystem;
and when only the output voltages of the BSG motor and the intelligent generator are not in a preset normal range and the target vehicle is started by the starter of the low-voltage electric subsystem to drive the engine, cutting off the energy output from the low-voltage electric subsystem to the high-voltage electric subsystem.
Specifically, the electrical balance rule includes:
and when only the DC-DC of the solar power generation device has no output voltage or only the output voltage of the BSG motor is not in a preset normal range, cutting off the energy output from the high-voltage electric subsystem to the low-voltage electric subsystem.
Specifically, the electrical balance rule further includes:
when only the DC-DC of the solar power generation device has no output voltage or only the output voltage of the BSG motor is not in a preset normal range, if the battery capacity of a low-voltage storage battery of the low-voltage electrical subsystem exceeds a preset calibration value or the power generation efficiency of the intelligent generator at the current rotating speed exceeds a first preset calibration efficiency, the low-voltage electrical subsystem is controlled to output energy to the high-voltage electrical subsystem.
Specifically, the electrical balance rule further includes:
and when only the DC-DC of the TEG tail gas power generation device has no output voltage or only the output voltage of the intelligent generator is not in a preset normal range, cutting off the energy output from the low-voltage electric subsystem to the high-voltage electric subsystem.
Specifically, the electrical balance rule further includes:
when only the DC-DC of the TEG tail gas power generation device has no output voltage or only the output voltage of the intelligent generator is not in a preset normal range, if the battery capacity of a power battery of the high-voltage electric subsystem exceeds a preset calibration value or the power generation efficiency of the BSG motor at the current rotating speed exceeds a second preset calibration efficiency, controlling the high-voltage electric subsystem to output energy to the low-voltage electric subsystem.
Specifically, the electrical balance rule further includes:
when only the DC-DC of the TEG tail gas power generation device and the solar power generation device has no output voltage, and the multiplied value of the power generation efficiency of the BSG motor and the high-voltage to low-voltage conversion efficiency of the high-voltage to low-voltage conversion DC-DC is greater than the power generation efficiency of the intelligent generator, controlling the high-voltage electrical subsystem to output energy to the low-voltage electrical subsystem;
when only the DC-DC of the TEG tail gas power generation device and the solar power generation device has no output voltage, and the multiplied value of the power generation efficiency of the intelligent generator and the low-voltage to high-voltage conversion efficiency of the high-low voltage conversion DC-DC is greater than the power generation efficiency of the BSG motor, controlling the low-voltage electrical subsystem to output energy to the high-voltage electrical subsystem;
and when the DC-DC of the TEG tail gas power generation device and the solar power generation device has no output voltage, if the multiplied value of the power generation efficiency of the BSG motor and the high-voltage to low-voltage conversion efficiency of the high-low voltage conversion DC-DC is not more than the power generation efficiency of the intelligent generator, or if the multiplied value of the power generation efficiency of the intelligent generator and the low-voltage to high-voltage conversion efficiency of the high-low voltage conversion DC-DC is not more than the power generation efficiency of the BSG motor, cutting off the energy output between the high-voltage electric subsystem and the low-voltage electric subsystem.
Specifically, the electrical balance rule further includes:
when the output voltage of the power battery is not in a preset normal range, cutting off the energy output from the high-voltage electric subsystem to the low-voltage electric subsystem, and controlling the high-voltage electric subsystem to enter a low power consumption state;
when the output voltage and the output current of the low-voltage storage battery are not in a preset normal range, cutting off the energy output from the low-voltage electric subsystem to the high-voltage electric subsystem, and controlling the low-voltage electric subsystem to enter a low-power consumption state;
and when the output voltages of the power battery and the low-voltage storage battery are not in a preset normal range, controlling the high-voltage electric subsystem and the low-voltage electric subsystem to enter a low power consumption state.
In a second aspect, the present application provides a vehicle dual-electrical-system balancing emergency power supply control device, comprising:
the work monitoring module is used for monitoring the working conditions of a high-voltage power supply device corresponding to a high-voltage electrical subsystem and a low-voltage power supply device corresponding to a low-voltage electrical subsystem of the target vehicle;
the electric balance regulation and control module is used for sending an electric balance regulation and control instruction for balancing the energy output direction between the high-voltage electrical subsystem and the low-voltage electrical subsystem to the high-low voltage conversion DC-DC of the target vehicle according to the working conditions of the high-voltage power supply device and the low-voltage power supply device and by combining a preset electric balance rule; wherein,
the high-voltage power supply device comprises a solar power generation device, a BSG motor and a power battery;
the low-voltage power supply device comprises a TEG tail gas power generation device, an intelligent generator and a low-voltage storage battery;
the electrical balancing rules include:
when only the output voltages of the BSG motor and the intelligent generator are not in a preset normal range and the target vehicle is started by the BSG motor dragging an engine, cutting off the energy output from the high-voltage electric subsystem to the low-voltage electric subsystem;
and when only the output voltages of the BSG motor and the intelligent generator are not in a preset normal range and the target vehicle is started by the starter of the low-voltage electric subsystem to drive the engine, cutting off the energy output from the low-voltage electric subsystem to the high-voltage electric subsystem.
The beneficial effect that technical scheme that this application provided brought includes:
this application monitors external power generation facility, generator class power generation facility and battery class power supply unit, when the fault condition that corresponds appears, carries out power supply balance control according to the balanced rule of preset electricity to guarantee the normal operating of vehicle.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the description below are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.
Fig. 1 is a flowchart illustrating steps of a method for controlling a balanced emergency power supply of a dual electrical system of a vehicle according to an embodiment of the present application;
fig. 2 is a schematic structural diagram of a method for controlling a vehicle dual-electrical system balanced emergency power supply according to an embodiment of the present application;
fig. 3 is a structural block diagram of a vehicle dual-electrical-system balanced emergency power supply control device according to a second embodiment of the present application.
Detailed Description
Interpretation of terms:
BSG, Belt-drive Starter Generator, Belt drive and start and power generation integrated machine;
TEG, Thermo Electric Generator, thermoelectric Generator, also known as thermoelectric Generator;
MCU, Micro Controller Unit, motor Controller;
BMS, Battery Management System, Power Battery pack and Battery controller;
SOC, State Of Charge, State Of Charge;
VCU, Vehicle Control Unit;
HCU, Hybrid Control Unit, Hybrid vehicle Control Unit;
PCU, Power Control Unit, energy management controller;
EECU, Engine Electronic Control Unit, Engine controller;
BCM, Body Control Module, Body controller.
In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some embodiments of the present application, but not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
Embodiments of the present application will be described in further detail below with reference to the accompanying drawings.
The embodiment of the application provides a method and a device for controlling balanced emergency power supply of a double-electrical system of a vehicle, which are used for monitoring an external power generation device, a generator type power generation device and a battery type power supply device, and carrying out power supply balance control according to a preset electric balance rule when a corresponding fault state occurs so as to ensure the normal operation of the vehicle.
In order to achieve the technical effects, the general idea of the application is as follows:
a vehicle double-electrical-system balanced emergency power supply control method comprises the following steps:
s1, monitoring the working conditions of a high-voltage power supply device corresponding to a high-voltage electrical subsystem and a low-voltage power supply device corresponding to a low-voltage electrical subsystem of the target vehicle;
and S2, balancing the energy output direction between the high-voltage electrical subsystem and the low-voltage electrical subsystem by using the high-low voltage conversion DC-DC of the target vehicle according to the working conditions of the high-voltage power supply device and the low-voltage power supply device and in combination with a preset electric balance rule.
Embodiments of the present application will be described in further detail below with reference to the accompanying drawings.
Example one
Referring to fig. 1-2, an embodiment of the present application provides a vehicle dual-electrical-system balanced emergency power supply control method, including the following steps:
s1, monitoring the working conditions of a high-voltage power supply device corresponding to a high-voltage electrical subsystem and a low-voltage power supply device corresponding to a low-voltage electrical subsystem of the target vehicle;
and S2, balancing the energy output direction between the high-voltage electrical subsystem and the low-voltage electrical subsystem by using the high-low voltage conversion DC-DC of the target vehicle according to the working conditions of the high-voltage power supply device and the low-voltage power supply device and in combination with a preset electric balance rule.
The target vehicle is in a 48V hybrid electric system form, when the target vehicle is in a 48V-24V electric system, the high-voltage electric subsystem is a 48V electric subsystem, the low-voltage electric subsystem is a 24V electric subsystem, and when the target vehicle is in a 48V-12V electric system, the high-voltage electric subsystem is a 48V electric subsystem, and the low-voltage electric subsystem is a 12V electric subsystem;
the DC-DC is a device which is used for converting the electric energy of one voltage value into the electric energy of another voltage value.
In the embodiment of the application, the external power generation device, the generator type power generation device and the battery type power supply device are monitored, and when a corresponding fault state occurs, power supply balance control is performed according to a preset electric balance rule so as to ensure normal operation of a vehicle.
Specifically, the high-voltage power supply device comprises a solar power generation device, a BSG motor and a power battery;
the low-voltage power supply device comprises a TEG tail gas power generation device, an intelligent generator and a low-voltage storage battery.
The hybrid electric vehicle relates to multi-energy management of an electric system of the vehicle, and comprises a BSG motor, a power battery, a TEG tail gas power generation device and the like besides a traditional generator and a storage battery, wherein the energy sources are more than 3 types.
The energy management PCU dynamically monitors solar energy, a TEG tail gas power generation device, a storage battery, a generator and a load working state, a vehicle speed state, an engine rotating speed state, an electronic accelerator state, a brake pedal state, a power supply main switch state and an ignition lock key state in real time;
installing an SOC sensor on the negative electrode of the traditional storage battery, and monitoring the SOC and the real-time output current of the storage battery;
for a regulator of a traditional generator, an LIN bus or a CAN bus or a hard wire is adopted to control the open-circuit voltage output of the regulator, so that the intelligent generator is formed.
All energy type components of the whole vehicle, namely a high-voltage power supply device, a low-voltage power supply device and a high-low voltage conversion DC-DC are divided into 4 energy type components, and the energy type components are as follows:
1) a new energy without energy consumption, a solar power generation device and a TEG tail gas power generation device,
2) power supply for generator: a BSG motor and an intelligent generator,
3) battery-based power supply: a power battery, a low-voltage storage battery,
4) high-low voltage conversion DC-DC, such as 48V to low-voltage DC-DC, which cannot generate power independently, but for a low-voltage electrical subsystem, the low-voltage electrical subsystem is still an energy component, which affects the control of the electric balance of the whole vehicle, in the embodiment of the application, the low-voltage electrical subsystem is bidirectional DC-DC;
when the solar power generation device and the TEG tail gas power generation device are connected into corresponding electric subsystems, corresponding DC-DC are configured.
During specific operation, when all energy components of the whole vehicle are normal, the control is carried out according to the original control strategy;
when the whole vehicle has abnormal work of energy components, the PCU fully utilizes the advantages and the stability of the double electric systems, and simultaneously takes the advantages and the disadvantages of each electric subsystem into consideration, and the PCU is controlled according to the following control method:
according to the differences of the same kind of individual damage, the same kind of damage, the same subsystem damage of different kinds of subsystems damage and the different subsystem damage of different kinds of subsystems, when the energy components of the whole vehicle work abnormally, the PCU carries out emergency power supply control according to the following principles:
1) when only one 'no energy consumption' type energy source of the whole vehicle is damaged, the PCU controls the electric energy to incline towards the damage direction;
2) when all the energy sources without energy consumption are damaged, the PCU compares the efficiencies of the BSG motor and the intelligent generator at the current rotating speed to determine the energy output direction of the bidirectional DC-DC;
3) when only one generator type energy of the whole vehicle is damaged, the PCU controls the electric energy to incline towards the damaged direction;
4) when all the generator energy sources are damaged, the PCU cuts off the DC-DC output in a single direction according to the starting requirement of the whole vehicle;
5) when only one battery power supply of the whole vehicle is damaged, the PCU controls the damaged side to be in a low-energy consumption state, energy output is cut off, energy input is reserved, and the PCU controls electric energy to incline towards the damaged side;
6) when the storage batteries of the whole vehicle are damaged, the PCU controls 48V and 24V electric subsystems, namely a high-voltage electric subsystem and a low-voltage electric subsystem, to be in a low-energy consumption state, and simultaneously alarms a driver;
7) if and only if two or more types of energy in the electric subsystem (24V or 48V) with the same voltage specification have faults, the PCU cuts off the output of the electric energy of the damaged subsystem to the intact side; and the electric energy of the undamaged party is output to the subsystem of the damaged party at the maximum output capacity. At the same time, the alarm is given to the driver,
8) when two or more types of energy sources in electric subsystems (24V or 48V) with different voltage specifications have faults, the bidirectional output of the bidirectional DC-DC is cut off, the existing state of the vehicle is maintained, and meanwhile, an alarm is given to a driver.
The principle realizes the following effects:
when the target vehicle has abnormal work of energy components, the advantages and the stability of the double electric systems are fully utilized, and meanwhile, the advantages and the disadvantages of each subsystem are considered for energy balance;
when the power type of the abnormal failure is single or the subsystem of the abnormal failure is single, energy conservation, use convenience and vehicle safety can still be considered, and control with high stability is carried out.
When the abnormally failed power supplies are various in types and cross subsystems, the balance of the electric system of the whole vehicle can be maintained as much as possible on the premise of ensuring the safety of the vehicle, and the simple and effective control is carried out.
Specifically, the electrical balance rule includes:
when only the DC-DC of the solar power generation device has no output voltage or only the output voltage of the BSG motor is not in a preset normal range, cutting off the energy output from the high-voltage electric subsystem to the low-voltage electric subsystem;
at the moment, one energy source of the high-voltage electrical subsystem is in failure, so that the damaged side is controlled at the moment, the energy output is cut off, but the energy input is reserved, and the electric energy is controlled to incline towards the damaged direction.
Further, the electrical balance rule further comprises:
when only the DC-DC of the solar power generation device has no output voltage or only the output voltage of the BSG motor is not in a preset normal range, if the power generation efficiency of the intelligent generator at the current rotating speed exceeds a first preset calibration efficiency, controlling the low-voltage electrical subsystem to output energy to the high-voltage electrical subsystem;
similarly, at the moment, two kinds of energy of the high-voltage electrical subsystem are failed, and the generating efficiency of the intelligent generator of the low-voltage electrical subsystem is normal, so that the damaged side is controlled to cut off the energy output of the intelligent generator, but the energy input is reserved, and the electric energy is controlled to incline towards the damaged side.
Further, the electrical balance rule further comprises:
when only the DC-DC of the TEG tail gas power generation device has no output voltage or only the output voltage of the intelligent generator is not in a preset normal range, cutting off the energy output from the low-voltage electric subsystem to the high-voltage electric subsystem;
at this time, one energy source of the low-voltage electric subsystem is in failure, so that the damaged side is controlled at this time, the energy output is cut off, but the energy input is reserved, and the electric energy is controlled to incline towards the damaged side.
Further, the electrical balance rule further comprises:
when only the DC-DC of the TEG tail gas power generation device has no output voltage or only the output voltage of the intelligent generator is not in a preset normal range, if the battery capacity of a power battery of the high-voltage electric subsystem exceeds a preset calibration value or the power generation efficiency of a BSG motor at the current rotating speed exceeds a second preset calibration efficiency, controlling the high-voltage electric subsystem to output energy to the low-voltage electric subsystem;
similarly, when the two kinds of energy of the low-voltage electric subsystem are failed, and the battery capacity of the power battery of the high-voltage electric subsystem exceeds a preset calibration value or the power generation efficiency of the BSG motor at the current rotating speed exceeds a second preset calibration efficiency, the high-voltage electric subsystem can normally operate and can provide energy for the low-voltage electric subsystem, so that the damaged side is controlled to cut off the energy output of the high-voltage electric subsystem, but the energy input is reserved, and the electric energy is controlled to incline to the damaged side.
Further, the electrical balance rule further comprises:
when only the DC-DC of the TEG tail gas power generation device and the solar power generation device has no output voltage, and the multiplied value of the power generation efficiency of the BSG motor and the high-voltage to low-voltage conversion efficiency of the high-voltage to low-voltage conversion DC-DC is greater than the power generation efficiency of the intelligent generator, controlling the high-voltage electric subsystem to output energy to the low-voltage electric subsystem;
when only DC-DC of the TEG tail gas power generation device and the solar power generation device have no output voltage, and the value obtained by multiplying the power generation efficiency of the intelligent generator and the low-voltage to high-voltage conversion efficiency of the high-low voltage conversion DC-DC is greater than the power generation efficiency of the BSG motor, controlling the low-voltage electric subsystem to output energy to the high-voltage electric subsystem;
when the DC-DC of the TEG tail gas power generation device and the solar power generation device only has no output voltage, if the multiplied value of the power generation efficiency of the BSG motor and the high-voltage to low-voltage conversion DC-DC is not more than the power generation efficiency of the intelligent power generator, or if the multiplied value of the power generation efficiency of the intelligent power generator and the low-voltage to high-voltage conversion DC-DC is not more than the power generation efficiency of the BSG motor, cutting off the energy output between the high-voltage electrical subsystem and the low-voltage electrical subsystem;
at the moment, when all the energy sources without energy consumption are damaged, the PCU compares the efficiencies of the BSG motor and the intelligent generator at the current rotating speed, determines the energy output direction of the bidirectional DC-DC, and reasonably allocates the energy balance between the high-voltage electric subsystem and the low-voltage electric subsystem.
Further, the electrical balance rule further comprises:
when only the output voltages of the BSG motor and the intelligent generator are not in a preset normal range and the target vehicle is started by dragging the engine by the BSG motor, cutting off the energy output from the high-voltage electric subsystem to the low-voltage electric subsystem;
when only the output voltages of the BSG motor and the intelligent generator are not in a preset normal range and the target vehicle is started by dragging the engine by the starter of the low-voltage electric subsystem, cutting off the energy output from the low-voltage electric subsystem to the high-voltage electric subsystem;
at the moment, in order to damage all the generator energy sources, the PCU cuts off the DC-DC output in a single direction according to the requirement of starting the whole vehicle, and the electric subsystem required by starting the whole vehicle can operate normally.
Further, the electrical balance rule further comprises:
when the output voltage of the power battery is not in a preset normal range, cutting off the energy output from the high-voltage electric subsystem to the low-voltage electric subsystem, and controlling the high-voltage electric subsystem to enter a low-power consumption state;
when the output voltage and the output current of the low-voltage storage battery are not in the preset normal range, cutting off the energy output from the low-voltage electric subsystem to the high-voltage electric subsystem, and controlling the low-voltage electric subsystem to enter a low-power consumption state;
when the output voltages of the power battery and the low-voltage storage battery are not in a preset normal range, controlling the high-voltage electric subsystem and the low-voltage electric subsystem to enter a low-power consumption state;
according to the rule, when only one battery type power supply of the whole vehicle is damaged, the PCU controls the damaged side to be in a low-energy consumption state, energy output is cut off, energy input is reserved, and the PCU controls electric energy to incline towards the damaged side;
when the whole vehicle storage battery is damaged, the PCU controls the 48V and 24V electric subsystems, namely the high-voltage electric subsystem and the low-voltage electric subsystem, to be in a low energy consumption state.
In actual practice, the specific cases are as follows:
when the PCU sends a working command signal to the solar power generation device through a bus or a hard wire, the PCU cuts off the energy output from a high-voltage electric subsystem in the high-voltage and low-voltage conversion DC-DC to a low-voltage electric subsystem, namely cuts off the energy output from 48V to 24V when the PCU monitors that no DC-DC output voltage of the solar power generation device exists and other power supply devices are normal;
and only when the capacity of the 24V battery is above a preset calibration value (for example, above 80%), or the power generation efficiency of the intelligent generator at the current rotating speed exceeds a first preset calibration efficiency, the PCU controls the high-low voltage to convert the DC-DC, so that the low-voltage electric subsystem outputs energy to the high-voltage electric subsystem, namely, the 24V is controlled to output energy to the 48V.
The generating efficiency map of the intelligent generator is obtained by a bench test, and the value of the first preset calibration efficiency can be calibrated, such as 40%.
When the PCU sends a working command signal to the TEG tail gas power generation device through a bus or a hard wire, but monitors that the DC-DC of the TEG tail gas power generation device has no output voltage and other power supply devices are normal, the PCU cuts off the energy output from the high-low voltage conversion DC-DC middle-low voltage electric subsystem to the high-voltage electric subsystem, namely cuts off the energy output from the low-voltage electric subsystem to the high-voltage electric subsystem;
the PCU controls the high-voltage and low-voltage conversion DC-DC only when the 48V battery capacity is above a preset calibration value (for example, above 80%), or the efficiency of the BSG motor at the current rotating speed exceeds a second preset calibration efficiency, so that the high-voltage electric subsystem outputs energy to the low-voltage electric subsystem; wherein,
the generating efficiency map of the BSG motor is obtained by a bench test, and the numerical value of the second preset calibration efficiency can be calibrated, such as 65%.
When the PCU sends a working command signal to the solar power generation device through a bus or a hard wire, the PCU monitors that no DC-DC output voltage of the solar power generation device exists; and PCU sends work command signal to TEG tail gas power generation facility through bus or hardwire, monitors that there is no output voltage in the DC-DC of TEG tail gas power generation facility, and when all other power supply units are normal, PCU then further compares the generating efficiency of BSG motor and intelligent generator under current rotational speed:
if the power generation efficiency of the BSG motor is multiplied by the high-voltage to low-voltage conversion efficiency of the high-voltage to low-voltage conversion DC-DC to be larger than the power generation efficiency of the intelligent generator, the PCU controls the high-voltage to low-voltage conversion DC-DC to output energy from the high-voltage electric subsystem to the low-voltage electric subsystem;
if the power generation efficiency of the intelligent motor is multiplied by the low-voltage to high-voltage conversion efficiency of the high-low voltage conversion DC-DC and is larger than the power generation efficiency of the BSG motor, the PCU controls the high-low voltage conversion DC-DC to output energy from the low-voltage electric subsystem to the high-voltage electric subsystem;
if the output is not the same as the above, the PCU controls the high-low voltage conversion DC-DC not to output.
When the PCU sends a working command signal to the BSG through the bus or the hard line, and monitors that the output voltage of the BSG is not in a normal range and other power supply devices are normal, the PCU cuts off the energy output from the high-voltage electric subsystem to the low-voltage electric subsystem in the high-low voltage conversion DC-DC;
the PCU controls the high-low voltage conversion DC-DC to output energy from the low-voltage electric subsystem to the high-voltage electric subsystem only when the battery capacity of a low-voltage storage battery of the low-voltage electric subsystem exceeds a preset calibration value (for example, more than 80%), or the power generation efficiency of the intelligent generator at the current rotating speed exceeds a first preset calibration efficiency (can be calibrated);
the generating efficiency map of the intelligent generator is obtained by a bench test, and the value of the first preset calibration efficiency can be calibrated, such as 40%.
When the PCU sends a working command signal to the intelligent generator through a bus or a hard line, but monitors that the output voltage of the intelligent generator is not in a preset normal range and other power supply devices are normal, the PCU cuts off the energy output from the high-low voltage conversion DC-DC low-low voltage electric subsystem to the high-voltage electric subsystem;
the PCU controls the high-voltage and low-voltage conversion DC-DC to output energy from the high-voltage electric subsystem to the low-voltage electric subsystem only when the battery capacity of a power battery of the high-voltage electric subsystem exceeds a preset calibration value (for example, more than 80 percent), or the power generation efficiency of the BSG motor at the current rotating speed exceeds a second preset calibration efficiency; wherein,
the generating efficiency map of the BSG motor is obtained by a bench test, and the numerical value of the second preset calibration efficiency can be calibrated, such as 65%.
When the PCU sends working command signals to the BSG motor and the intelligent generator through a bus or a hard line, but monitors that the output voltages of the BSG motor and the intelligent generator are not in a preset normal range and other power supply devices are normal, the PCU controls the high-low voltage conversion DC-DC single-direction cut-off output according to the following vehicle conditions:
when the target vehicle is started by a starter of a low-voltage electric subsystem to drag an engine, such as a 48V system of a passenger vehicle, a PCU controls high-voltage and low-voltage conversion DC-DC to cut off the energy output from a high-voltage electric subsystem to the low-voltage electric subsystem, and the energy output from the low-voltage electric subsystem to the high-voltage electric subsystem is reserved, so that the target vehicle inclines to the vehicle starting working energy side from the energy distribution;
when the target vehicle is started by the starter of the low-voltage electric subsystem to drag the engine, if the 48V system of the commercial vehicle keeps the traditional starter, the PCU controls the high-voltage and low-voltage conversion DC-DC to cut off the energy output of the low-voltage electric subsystem to the high-voltage electric subsystem and reserve the energy output of the high-voltage electric subsystem to the low-voltage electric subsystem, so that the energy distribution inclines to the vehicle starting working energy side.
When the PCU sends a working command signal to a power battery of the high-voltage electric subsystem through a bus or a hard line and the output voltage of the power battery is not in a normal range, the PCU controls the high-voltage electric subsystem to be in a low-energy consumption state, namely all comfortable electric equipment (such as an electric air conditioner) on the side of the high-voltage electric subsystem is turned off, and controls the high-voltage and low-voltage conversion DC-DC to cut off the energy output of the high-voltage electric subsystem to the low-voltage electric subsystem;
when the PCU monitors that the output voltage and the output current of the traditional storage battery are not in the normal range, the PCU controls the low-voltage electric system to be in a low-energy consumption state, namely all comfortable electric equipment (such as audio-visual entertainment) on one side of the low-voltage electric system is turned off, and controls the high-voltage and low-voltage conversion DC-DC to cut off the energy output from the low-voltage electric subsystem to the high-voltage electric subsystem.
When the PCU sends a working command signal to a power battery in the high-voltage electric subsystem through a bus or a hard wire, the output voltage of the power battery is out of a normal range, and the output voltage and the output current of a traditional storage battery are monitored to be out of the normal range, the PCU controls the high-voltage electric subsystem and the low-voltage electric subsystem to be in a low-energy consumption state, namely all comfortable electric equipment is turned off, and meanwhile the following steps are carried out according to the vehicle condition:
a. if the vehicle is in the running process, reminding a driver of selecting a safe parking place to park and overhaul as soon as possible by using the sound-light-electricity signal, and informing that the vehicle possibly cannot be started next time;
b. if the vehicle is in a static state, the driver is reminded of overhauling as soon as possible by using the acoustic-optical-electric signal, and the vehicle is informed that the vehicle cannot be started next time.
In summary, if and only if two or more types of energy components in an electrical subsystem (high-voltage electrical subsystem or low-voltage electrical subsystem) with the same voltage specification fail, the PCU cuts off the output of the electric energy of the damaged subsystem to the intact side;
the electric energy of the undamaged party is output to the subsystem of the damaged party by the maximum output capacity (without making the limit value of the output current);
meanwhile, the acousto-optic electric signals are used for reminding a driver that a plurality of power supply type electric components are possibly damaged, and the driver is required to overhaul as soon as possible.
If two or more types of energy components in the electric subsystems (high-voltage electric subsystems or low-voltage electric subsystems) with different voltage specifications have faults, the bidirectional output of the high-voltage and low-voltage conversion DC-DC is cut off, the existing state of the vehicle is maintained, and meanwhile:
a. if the vehicle is running, the driver is reminded of selecting a safe parking place to park and overhaul as soon as possible by using the acoustic-optical-electric signals, and the vehicle is informed that the vehicle cannot be started next time.
b. If the vehicle is in a static state, the driver is reminded of overhauling as soon as possible by using the acoustic-optical-electric signal, and the vehicle is informed that the vehicle cannot be started next time.
This avoids unpredictable effects on the stability of existing control strategies, while providing as much safety warning as possible of driver operation.
It should be noted that the software carrier of the control method according to the embodiment of the present application may be integrated in the vehicle control unit VCU or HCU, or integrated in the energy management controller PCU, or internal to the engine controller EECU or the vehicle body controller BCM, and the related components may be controlled by bus signals or hard wires. The above are all within the scope of the embodiments of the present application.
In addition, the embodiment of the application corresponds to a vehicle in a 48V hybrid electric system form, and the vehicle is realized in the embodiment of the application regardless of a 48V-24V electric system or a 48V-12V electric system;
the low-voltage storage battery of the 12V electric system is in a 12V specification, and the high-voltage and low-voltage conversion DC-DC is in a 48V to 12V specification;
the low-voltage storage battery of the 24V electric system is in a 24V specification, and the high-low voltage conversion DC-DC is in a 48V to 24V specification.
Example two
Referring to fig. 3, an embodiment of the present application provides a vehicle dual-electrical-system balanced emergency power supply control device, which is used to implement the vehicle dual-electrical-system balanced emergency power supply control method in the first embodiment, and the device includes:
the work monitoring module is used for monitoring the working conditions of a high-voltage power supply device corresponding to a high-voltage electrical subsystem and a low-voltage power supply device corresponding to a low-voltage electrical subsystem of the target vehicle;
and the electric balance regulation and control module is used for sending an electric balance regulation and control instruction for balancing the energy output direction between the high-voltage electrical subsystem and the low-voltage electrical subsystem to the high-low voltage conversion DC-DC of the target vehicle according to the working conditions of the high-voltage power supply device and the low-voltage power supply device and by combining a preset electric balance rule.
It should be noted that, the target vehicle is in a 48V hybrid electric system form, when it is in a 48V-24V electric system, the high-voltage electric subsystem is a 48V electric subsystem, the low-voltage electric subsystem is a 24V electric subsystem, when it is in a 48V-12V electric system, the high-voltage electric subsystem is a 48V electric subsystem, and the low-voltage electric subsystem is a 12V electric subsystem.
In the embodiment of the application, the external power generation device, the generator type power generation device and the battery type power supply device are monitored, and when a corresponding fault state occurs, power supply balance control is performed according to a preset electric balance rule so as to ensure normal operation of a vehicle.
Specifically, the high-voltage power supply device comprises a solar power generation device, a BSG motor and a power battery;
the low-voltage power supply device comprises a TEG tail gas power generation device, an intelligent generator and a low-voltage storage battery.
Specifically, the electrical balance rule includes:
when only the DC-DC of the solar power generation device has no output voltage or only the output voltage of the BSG motor is not in a preset normal range, cutting off the energy output from the high-voltage electric subsystem to the low-voltage electric subsystem;
at the moment, one energy source of the high-voltage electrical subsystem is in failure, so that the damaged side is controlled to cut off the energy output of the damaged side at the moment, but the energy input is reserved, and the electric energy is controlled to incline towards the damaged side.
Further, the electrical balance rule further comprises:
when only the DC-DC of the solar power generation device has no output voltage or only the output voltage of the BSG motor is not in a preset normal range, if the power generation efficiency of the intelligent generator at the current rotating speed exceeds a first preset calibration efficiency, controlling the low-voltage electrical subsystem to output energy to the high-voltage electrical subsystem;
similarly, at the moment, two kinds of energy of the high-voltage electrical subsystem are failed, and the generating efficiency of the intelligent generator of the low-voltage electrical subsystem is normal, so that the damaged side is controlled to cut off the energy output of the intelligent generator, but the energy input is reserved, and the electric energy is controlled to incline towards the damaged side.
Further, the electrical balance rule further comprises:
when only the DC-DC of the TEG tail gas power generation device has no output voltage or only the output voltage of the intelligent generator is not in a preset normal range, cutting off the energy output from the low-voltage electric subsystem to the high-voltage electric subsystem;
at this time, one energy source of the low-voltage electric subsystem is in failure, so that the damaged side is controlled at this time, the energy output is cut off, but the energy input is reserved, and the electric energy is controlled to incline towards the damaged side.
Further, the electrical balance rule further comprises:
when only the DC-DC of the TEG tail gas power generation device has no output voltage or only the output voltage of the intelligent generator is not in a preset normal range, if the battery capacity of a power battery of the high-voltage electric subsystem exceeds a preset calibration value or the power generation efficiency of a BSG motor at the current rotating speed exceeds a second preset calibration efficiency, controlling the high-voltage electric subsystem to output energy to the low-voltage electric subsystem;
similarly, when two kinds of energy of the low-voltage electric subsystem are failed, and the battery capacity of a power battery of the high-voltage electric subsystem exceeds a preset calibration value or the power generation efficiency of the BSG motor at the current rotating speed exceeds a second preset calibration efficiency, the high-voltage electric subsystem can normally operate and can provide energy for the low-voltage electric subsystem, so that the damaged side is controlled at the moment, the energy output of the high-voltage electric subsystem is cut off, the energy input is reserved, and the electric energy is controlled to incline towards the damaged direction.
Further, the electrical balance rule further comprises:
when only DC-DC of the TEG tail gas power generation device and the solar power generation device have no output voltage, and the multiplied value of the power generation efficiency of the BSG motor and the high-voltage to low-voltage conversion efficiency of the high-voltage to low-voltage conversion DC-DC is greater than the power generation efficiency of the intelligent generator, controlling the high-voltage electric subsystem to output energy to the low-voltage electric subsystem;
when only DC-DC of the TEG tail gas power generation device and the solar power generation device have no output voltage, and the value obtained by multiplying the power generation efficiency of the intelligent generator and the low-voltage to high-voltage conversion efficiency of the high-low voltage conversion DC-DC is greater than the power generation efficiency of the BSG motor, controlling the low-voltage electric subsystem to output energy to the high-voltage electric subsystem;
when the DC-DC of the TEG tail gas power generation device and the solar power generation device only has no output voltage, if the multiplied value of the power generation efficiency of the BSG motor and the high-voltage to low-voltage conversion DC-DC is not more than the power generation efficiency of the intelligent power generator, or if the multiplied value of the power generation efficiency of the intelligent power generator and the low-voltage to high-voltage conversion DC-DC is not more than the power generation efficiency of the BSG motor, cutting off the energy output between the high-voltage electrical subsystem and the low-voltage electrical subsystem;
at the moment, when all the energy sources without energy consumption are damaged, the PCU compares the efficiencies of the BSG motor and the intelligent generator at the current rotating speed, determines the energy output direction of the bidirectional DC-DC, and reasonably allocates the energy balance between the high-voltage electric subsystem and the low-voltage electric subsystem.
Further, the electrical balance rule further comprises:
when only the output voltages of the BSG motor and the intelligent generator are not in a preset normal range and the target vehicle is started by dragging the engine by the BSG motor, cutting off the energy output from the high-voltage electric subsystem to the low-voltage electric subsystem;
when only the output voltages of the BSG motor and the intelligent generator are not in a preset normal range and the target vehicle is started by dragging the engine by the starter of the low-voltage electric subsystem, cutting off the energy output from the low-voltage electric subsystem to the high-voltage electric subsystem;
at the moment, in order to damage all the generator energy sources, the PCU cuts off the DC-DC output in a single direction according to the requirement of starting the whole vehicle, and the electric subsystem required by starting the whole vehicle can operate normally.
Further, the electrical balance rule further comprises:
when the output voltage of the power battery is not in a preset normal range, cutting off the energy output from the high-voltage electric subsystem to the low-voltage electric subsystem, and controlling the high-voltage electric subsystem to enter a low-power consumption state;
when the output voltage and the output current of the low-voltage storage battery are not in the preset normal range, cutting off the energy output from the low-voltage electric subsystem to the high-voltage electric subsystem, and controlling the low-voltage electric subsystem to enter a low-power consumption state;
when the output voltages of the power battery and the low-voltage storage battery are not in a preset normal range, controlling the high-voltage electric subsystem and the low-voltage electric subsystem to enter a low-power consumption state;
according to the rule, when only one battery type power supply of the whole vehicle is damaged, the PCU controls the damaged side to be in a low-energy consumption state, energy output is cut off, energy input is reserved, and the PCU controls electric energy to incline towards the damaged side;
when the storage battery of the whole vehicle is damaged, the PCU controls the 48V and 24V electric subsystems, namely the high-voltage electric subsystem and the low-voltage electric subsystem, to be in a low energy consumption state.
It is noted that, in the present application, relational terms such as "first" and "second", and the like, are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, 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 an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
The foregoing are merely exemplary embodiments of the present application and are presented to enable those skilled in the art to understand and practice the present application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the application. Thus, the present application is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims (8)

1. A vehicle double-electrical-system balanced emergency power supply control method is characterized by comprising the following steps:
monitoring the working conditions of a high-voltage power supply device corresponding to a high-voltage electrical subsystem and a low-voltage power supply device corresponding to a low-voltage electrical subsystem of a target vehicle;
according to the working conditions of the high-voltage power supply device and the low-voltage power supply device, in combination with a preset electric balance rule, balancing the energy output direction between the high-voltage electrical subsystem and the low-voltage electrical subsystem by using high-low voltage conversion DC-DC of the target vehicle; wherein,
the high-voltage power supply device comprises a solar power generation device, a BSG motor and a power battery;
the low-voltage power supply device comprises a TEG tail gas power generation device, an intelligent generator and a low-voltage storage battery;
the electrical balancing rules include:
when only the output voltages of the BSG motor and the intelligent generator are not in a preset normal range and the target vehicle is started by the BSG motor dragging an engine, cutting off the energy output from the high-voltage electric subsystem to the low-voltage electric subsystem;
and when only the output voltages of the BSG motor and the intelligent generator are not in a preset normal range and the target vehicle is started by the starter of the low-voltage electric subsystem to drive the engine, cutting off the energy output from the low-voltage electric subsystem to the high-voltage electric subsystem.
2. The vehicle dual electrical system balanced emergency power supply control method of claim 1, wherein the electrical balancing rules comprise:
and when only the DC-DC of the solar power generation device has no output voltage or only the output voltage of the BSG motor is not in a preset normal range, cutting off the energy output from the high-voltage electric subsystem to the low-voltage electric subsystem.
3. The vehicle dual electrical system equalizing emergency power supply control method of claim 2, wherein said electrical balancing rules further comprise:
when only the DC-DC of the solar power generation device has no output voltage or only the output voltage of the BSG motor is not in a preset normal range, if the battery capacity of a low-voltage storage battery of the low-voltage electrical subsystem exceeds a preset calibration value or the power generation efficiency of the intelligent generator at the current rotating speed exceeds a first preset calibration efficiency, the low-voltage electrical subsystem is controlled to output energy to the high-voltage electrical subsystem.
4. The vehicle dual electrical system equalizing emergency power supply control method of claim 1, wherein said electrical balancing rules further comprise:
and when only the DC-DC of the TEG tail gas power generation device has no output voltage or only the output voltage of the intelligent generator is not in a preset normal range, cutting off the energy output from the low-voltage electrical subsystem to the high-voltage electrical subsystem.
5. The vehicle dual electrical system balanced emergency power supply control method of claim 4, wherein said electrical balancing rules further comprise:
when only the DC-DC of the TEG tail gas power generation device has no output voltage or only the output voltage of the intelligent generator is not in a preset normal range, if the battery capacity of a power battery of the high-voltage electric subsystem exceeds a preset calibration value or the power generation efficiency of the BSG motor at the current rotating speed exceeds a second preset calibration efficiency, controlling the high-voltage electric subsystem to output energy to the low-voltage electric subsystem.
6. The vehicle dual electrical system equalizing emergency power supply control method of claim 1, wherein said electrical balancing rules further comprise:
when only the DC-DC of the TEG tail gas power generation device and the solar power generation device has no output voltage, and the multiplied value of the power generation efficiency of the BSG motor and the high-voltage to low-voltage conversion efficiency of the high-voltage to low-voltage conversion DC-DC is greater than the power generation efficiency of the intelligent generator, controlling the high-voltage electrical subsystem to output energy to the low-voltage electrical subsystem;
when only the DC-DC of the TEG tail gas power generation device and the solar power generation device has no output voltage, and the multiplied value of the power generation efficiency of the intelligent generator and the low-voltage to high-voltage conversion efficiency of the high-low voltage conversion DC-DC is greater than the power generation efficiency of the BSG motor, controlling the low-voltage electrical subsystem to output energy to the high-voltage electrical subsystem;
and when the DC-DC of the TEG tail gas power generation device and the solar power generation device has no output voltage, if the multiplied value of the power generation efficiency of the BSG motor and the high-to-low voltage efficiency of the high-to-low voltage conversion DC-DC is not more than the power generation efficiency of the intelligent generator, or if the multiplied value of the power generation efficiency of the intelligent generator and the low-to-high voltage efficiency of the high-to-low voltage conversion DC-DC is not more than the power generation efficiency of the BSG motor, cutting off the energy output between the high-voltage electrical subsystem and the low-voltage electrical subsystem.
7. The vehicle dual electrical system equalizing emergency power supply control method of claim 1, wherein said electrical balancing rules further comprise:
when the output voltage of the power battery is not in a preset normal range, cutting off the energy output from the high-voltage electric subsystem to the low-voltage electric subsystem, and controlling the high-voltage electric subsystem to enter a low power consumption state;
when the output voltage and the output current of the low-voltage storage battery are not in a preset normal range, cutting off the energy output from the low-voltage electric subsystem to the high-voltage electric subsystem, and controlling the low-voltage electric subsystem to enter a low-power consumption state;
and when the output voltages of the power battery and the low-voltage storage battery are not in a preset normal range, controlling the high-voltage electric subsystem and the low-voltage electric subsystem to enter a low power consumption state.
8. A vehicle dual-electrical-system balanced emergency power supply control device, characterized by comprising:
the work monitoring module is used for monitoring the working conditions of a high-voltage power supply device corresponding to a high-voltage electrical subsystem and a low-voltage power supply device corresponding to a low-voltage electrical subsystem of the target vehicle;
the electric balance regulation and control module is used for sending an electric balance regulation and control instruction for balancing the energy output direction between the high-voltage electrical subsystem and the low-voltage electrical subsystem to the high-low voltage conversion DC-DC of the target vehicle according to the working conditions of the high-voltage power supply device and the low-voltage power supply device and by combining a preset electric balance rule; wherein,
the high-voltage power supply device comprises a solar power generation device, a BSG motor and a power battery;
the low-voltage power supply device comprises a TEG tail gas power generation device, an intelligent generator and a low-voltage storage battery;
the electrical balancing rules include:
when only the output voltages of the BSG motor and the intelligent generator are not in a preset normal range and the target vehicle is started by the BSG motor dragging an engine, cutting off the energy output from the high-voltage electric subsystem to the low-voltage electric subsystem;
and when only the output voltages of the BSG motor and the intelligent generator are not in a preset normal range and the target vehicle is started by the starter of the low-voltage electric subsystem to drive the engine, cutting off the energy output from the low-voltage electric subsystem to the high-voltage electric subsystem.
CN202011195397.6A 2020-10-30 2020-10-30 Method and device for controlling balanced emergency power supply of double electrical systems of vehicle Active CN112389201B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202011195397.6A CN112389201B (en) 2020-10-30 2020-10-30 Method and device for controlling balanced emergency power supply of double electrical systems of vehicle

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202011195397.6A CN112389201B (en) 2020-10-30 2020-10-30 Method and device for controlling balanced emergency power supply of double electrical systems of vehicle

Publications (2)

Publication Number Publication Date
CN112389201A CN112389201A (en) 2021-02-23
CN112389201B true CN112389201B (en) 2022-06-07

Family

ID=74598625

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202011195397.6A Active CN112389201B (en) 2020-10-30 2020-10-30 Method and device for controlling balanced emergency power supply of double electrical systems of vehicle

Country Status (1)

Country Link
CN (1) CN112389201B (en)

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN207481809U (en) * 2017-09-28 2018-06-12 宝沃汽车（中国）有限公司 Vehicle powering system and vehicle
CN108515961A (en) * 2018-03-29 2018-09-11 吉利汽车研究院（宁波）有限公司 The DCDC control methods and system of 48V hybrid power systems
CN108545076A (en) * 2018-04-16 2018-09-18 奇瑞汽车股份有限公司 A kind of control method for vehicle and device based on BSG motors
CN208021202U (en) * 2018-03-21 2018-10-30 安徽安凯汽车股份有限公司 A kind of novel used in new energy vehicles low pressure assistant drive system
CN110978991A (en) * 2019-12-18 2020-04-10 东风商用车有限公司 Hybrid power commercial vehicle electrical system for power generation by solar energy and waste gas waste heat
CN210396948U (en) * 2019-07-11 2020-04-24 吉利汽车研究院（宁波）有限公司 Starting system for engine and vehicle
JP2020089038A (en) * 2018-11-22 2020-06-04 マツダ株式会社 Control device for vehicle power source
CN111791816A (en) * 2020-06-30 2020-10-20 东风商用车有限公司 BSG motor and double-generator energy supply system for commercial vehicle

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108663218B (en) * 2018-04-24 2019-06-25 武汉理工大学 A kind of light-duty hybrid vehicle off-line detection system of 48V and method
US20200086732A1 (en) * 2018-09-17 2020-03-19 Continental Powertrain USA, LLC Cold 48-volt engine start using 12-volt battery
CN109782187A (en) * 2019-01-22 2019-05-21 中国第一汽车股份有限公司 48V DC/DC control system and method based on road conditions detection

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN207481809U (en) * 2017-09-28 2018-06-12 宝沃汽车（中国）有限公司 Vehicle powering system and vehicle
CN208021202U (en) * 2018-03-21 2018-10-30 安徽安凯汽车股份有限公司 A kind of novel used in new energy vehicles low pressure assistant drive system
CN108515961A (en) * 2018-03-29 2018-09-11 吉利汽车研究院（宁波）有限公司 The DCDC control methods and system of 48V hybrid power systems
CN108545076A (en) * 2018-04-16 2018-09-18 奇瑞汽车股份有限公司 A kind of control method for vehicle and device based on BSG motors
JP2020089038A (en) * 2018-11-22 2020-06-04 マツダ株式会社 Control device for vehicle power source
CN210396948U (en) * 2019-07-11 2020-04-24 吉利汽车研究院（宁波）有限公司 Starting system for engine and vehicle
CN110978991A (en) * 2019-12-18 2020-04-10 东风商用车有限公司 Hybrid power commercial vehicle electrical system for power generation by solar energy and waste gas waste heat
CN111791816A (en) * 2020-06-30 2020-10-20 东风商用车有限公司 BSG motor and double-generator energy supply system for commercial vehicle

Also Published As

Publication number Publication date
CN112389201A (en) 2021-02-23

Similar Documents

Publication Publication Date Title
CN103444043B (en) Power-supply system and the lift-launch vehicle of this power-supply system and the control method of power-supply system
US8467924B2 (en) Control apparatus and control method for hybrid vehicle
KR101849357B1 (en) Method for controlling vehicle driving
EP1151892B1 (en) Vehicle with a high voltage power source system and method of controlling the start of such vehicle
US10239417B2 (en) Vehicle
US9071081B2 (en) Power source device for vehicle
US9130487B2 (en) Control strategy for an electric machine in a vehicle
CA2863605C (en) High voltage cable detection using rotating machine in hybrid vehicles
CN104724100B (en) The system and method for controlling the torque of hybrid vehicle
CN107323270B (en) Electric automobile and energy feedback method and system thereof
US8965618B2 (en) Control strategy for an electric machine in a vehicle
JP5010288B2 (en) Control device for hybrid vehicle
DE102013202725A1 (en) EMERGENCY OPERATING STRATEGY FOR AN ELECTRIC VEHICLE
KR20150097679A (en) Charging control device using in-vehicle solar cell
CN104716703B (en) Battery discharge device with self-adjusting resistor
JP2016510706A (en) Operation method and arrangement of hybrid electric vehicle
CN109398093B (en) Control method, system and device of electronic cooling fan and pure electric vehicle
CN214189325U (en) Automotive charger baby system
CN110832190A (en) Capacitor module
CN112389201B (en) Method and device for controlling balanced emergency power supply of double electrical systems of vehicle
EP3674129B1 (en) Vehicular charging control system
KR20110139611A (en) System for engine controlling of hybrid vehicle and method thereof
CN104052367B (en) Control strategy for the motor in vehicle
CN112248951B (en) Electric balance control method and device for vehicle low-voltage electric subsystem
KR101692635B1 (en) Rights field with a linear synchronous motor in electric vehicle battery charge control apparatus and method

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
GR01 Patent grant
GR01 Patent grant