CN110978991A - Hybrid power commercial vehicle electrical system for power generation by solar energy and waste gas waste heat - Google Patents
Hybrid power commercial vehicle electrical system for power generation by solar energy and waste gas waste heat Download PDFInfo
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- CN110978991A CN110978991A CN201911310066.XA CN201911310066A CN110978991A CN 110978991 A CN110978991 A CN 110978991A CN 201911310066 A CN201911310066 A CN 201911310066A CN 110978991 A CN110978991 A CN 110978991A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
- B60K6/00—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00
- B60K6/20—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs
- B60K6/42—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs characterised by the architecture of the hybrid electric vehicle
- B60K6/46—Series type
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
- B60K16/00—Arrangements in connection with power supply of propulsion units in vehicles from forces of nature, e.g. sun or wind
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
- B60K6/00—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00
- B60K6/20—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs
- B60K6/22—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs characterised by apparatus, components or means specially adapted for HEVs
- B60K6/28—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs characterised by apparatus, components or means specially adapted for HEVs characterised by the electric energy storing means, e.g. batteries or capacitors
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- 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
- B60L50/00—Electric propulsion with power supplied within the vehicle
- B60L50/50—Electric propulsion with power supplied within the vehicle using propulsion power supplied by batteries or fuel cells
- B60L50/60—Electric propulsion with power supplied within the vehicle using propulsion power supplied by batteries or fuel cells using power supplied by batteries
- B60L50/61—Electric propulsion with power supplied within the vehicle using propulsion power supplied by batteries or fuel cells using power supplied by batteries by batteries charged by engine-driven generators, e.g. series hybrid electric vehicles
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- 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
- B60L50/00—Electric propulsion with power supplied within the vehicle
- B60L50/90—Electric propulsion with power supplied within the vehicle using propulsion power supplied by specific means not covered by groups B60L50/10 - B60L50/50, e.g. by direct conversion of thermal nuclear energy into electricity
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- 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
- B60L7/00—Electrodynamic brake systems for vehicles in general
- B60L7/10—Dynamic electric regenerative braking
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R16/00—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for
- B60R16/02—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements
- B60R16/03—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements for supply of electrical power to vehicle subsystems or for
- B60R16/0307—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements for supply of electrical power to vehicle subsystems or for using generators driven by a machine different from the vehicle motor
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
- B60K16/00—Arrangements in connection with power supply of propulsion units in vehicles from forces of nature, e.g. sun or wind
- B60K2016/003—Arrangements in connection with power supply of propulsion units in vehicles from forces of nature, e.g. sun or wind solar power driven
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/62—Hybrid vehicles
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/70—Energy storage systems for electromobility, e.g. batteries
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/80—Technologies aiming to reduce greenhouse gasses emissions common to all road transportation technologies
- Y02T10/90—Energy harvesting concepts as power supply for auxiliaries' energy consumption, e.g. photovoltaic sun-roof
Abstract
The invention discloses a hybrid power commercial vehicle electric system for generating power by solar energy and waste heat of exhaust gas, belonging to the field of commercial vehicle electric control and comprising: a first power generation unit including: the BSG motor is connected with a crankshaft belt pulley of the engine through a belt, the BSG motor is electrically connected with the first storage battery, and the solar battery is provided with a first DCDC converter; a second power generation unit comprising: the intelligent generator is connected with a crankshaft pulley of the engine through a belt, the intelligent generator is electrically connected with the second storage battery, the waste gas waste heat power generation device is provided with a second DCDC converter, the third DCDC converter is connected with the first storage battery and the second storage battery, and the first storage battery is charged to the second storage battery through the third DCDC converter. The invention realizes the energy saving of the whole vehicle system, thereby achieving the purposes of reducing the load of the engine and saving the fuel of the whole vehicle, and improving the fuel economy and the power performance of the engine.
Description
Technical Field
The invention relates to the technical field of electric control of commercial vehicles, in particular to an electric system of a hybrid power commercial vehicle for power generation by solar energy and waste heat of waste gas.
Background
The power for the operation of the vehicle is provided by the engine of the vehicle, and the operation of the engine of the vehicle requires the combustion of fuel. The automobile engine can be divided into a diesel engine, a gasoline engine, an electric automobile engine, a hybrid engine and the like according to different fuels. As the heart of the automobile, the engine of the automobile has a great influence on the dynamic performance, economy and environmental protection of the whole automobile, and therefore, the improvement of the performance of the engine is very important to promote the development of the automobile industry. In the current state of the art, the output power of an automobile engine only accounts for 30% -42% (diesel engine) or 25% -40% (gasoline engine) of the total calorific value of fuel, that is, most of the energy generated by fuel is wasted, and only a small part of the energy is utilized. The rest energy is dissipated in the surrounding environment as modes of automobile exhaust emission, heat generation in the working process of an engine and the like.
Chinese patent CN107134968A discloses a dual-source power generation system and method using waste heat of exhaust gas and solar energy for a refrigerator car, which is shown in fig. 2 and includes an engine 1, a thermoelectric power generation device 2, a control management unit 3, a solar panel 4, a refrigerator car compartment 5, a generator 6, a voltage stabilizer 7, a storage battery pack 8, a load 9 and transparent glass 13. The temperature difference power generation device 2, the solar panel 4, the generator 6 and the storage battery pack 8 are connected with the uniform control management unit 3; the temperature difference signal of the exhaust pipe of the engine 1 and the temperature difference signal of the interior of the compartment 5 of the refrigerator car are transmitted to the control management unit 3 by the temperature difference generating device 2, the temperature of the solar cell panel 4 is transmitted to the control management unit 3, and the control management unit 3 controls the temperature difference generating device 2 and the solar cell panel 4 to work respectively. The generator 6 transmits a rotation stop signal of the generator 6 to the control management unit 3; the storage battery pack 8 transmits an electric quantity signal of the storage battery pack 8 to the control management unit 3, and the control management unit 3 respectively controls the generator 6 and the storage battery pack 8 to work; the thermoelectric generation device 2, the solar cell panel 4 and the generator 6 are connected with the voltage stabilizer 7, and the generated electric energy of the thermoelectric generation device 2, the solar cell panel 4 and the generator 6 is stabilized by the voltage stabilizer 7 and then used for the load 9 to do work.
The exhaust pipe of the engine 1 is connected with one end of the temperature difference power generation device 2; the temperature difference power generation device 2 is fixed at the bottom of the refrigerator car carriage 5, the upper surface of the temperature difference power generation device 2 is arranged inside the refrigerator car carriage 5, and the upper surface of the temperature difference power generation device 2 is higher than the bottom plane of the refrigerator car carriage 5; the top of the refrigerator car carriage 5 is provided with transparent glass 13; the solar panel 4 is fixed below the transparent glass 13 on the top of the refrigerator car compartment 5.
The electric energy generated by the thermoelectric generation device, the solar panel and the generator of the double-source power generation system is stabilized by the voltage stabilizer and then can only be used for providing electric energy for the vehicle load, so that the load of the engine is reduced, power assistance and braking energy recovery cannot be provided for the engine, and the fuel economy and the power performance of the engine need to be further optimized.
Disclosure of Invention
The invention aims to overcome the defects that a double-source power generation system in the background technology cannot provide power assistance and brake energy recovery for an engine, and the fuel economy and the power performance of the engine need to be optimized, and provides a hybrid power commercial vehicle electric system for generating power by using solar energy and waste heat of exhaust gas.
The invention provides an electric system of a hybrid power commercial vehicle for power generation by solar energy and waste heat of exhaust gas, which comprises:
a first power generation unit comprising: the BSG motor is connected with a crankshaft belt pulley of the engine through a belt, the BSG motor is electrically connected with the first storage battery, the solar battery is provided with a first DCDC converter, and the solar battery is electrically connected with the first storage battery through the first DCDC converter;
a second power generation unit comprising: the intelligent generator is connected with a crankshaft pulley of the engine through a belt, the intelligent generator is electrically connected with a second storage battery, the waste gas waste heat power generation device is provided with a second DCDC converter, and the waste gas waste heat power generation device is electrically connected with the second storage battery through the second DCDC converter;
and the third DCDC converter is connected with the first storage battery and the second storage battery, and the first storage battery charges the second storage battery through the third DCDC converter.
The preferred scheme is as follows: the first power generation unit further comprises an air conditioner compressor and a power control unit, the air conditioner compressor is respectively connected with the BSG motor, the solar battery and the first storage battery in parallel, the power control unit is electrically connected with the BSG motor and the first storage battery, and the power control unit is used for detecting the residual electric quantity of the first storage battery and controlling the BSG motor to charge the first storage battery.
The preferred scheme is as follows: the voltage of the air conditioner compressor is 48 volts, the voltage of the BSG motor is 48 volts, direct current electricity generated by the solar cell is converted into direct current electricity of 48 volts through the first DCDC converter, and the voltage of the first storage battery is 48 volts.
The preferred scheme is as follows: the second power generation unit further comprises a vehicle load and a power control unit, the vehicle load is connected with the intelligent power generator, the waste gas waste heat power generation device and the second storage battery in parallel, the power control unit is electrically connected with the second storage battery and the intelligent power generator, and the power control unit is used for detecting the residual electric quantity of the second storage battery and controlling the intelligent power generator to charge the second storage battery.
The preferred scheme is as follows: the voltage of the vehicle load is 24 volts, the voltage of the intelligent generator is 24 volts, direct current electricity generated by the waste gas waste heat power generation device is converted into 24-volt direct current electricity through the second DCDC converter, and the voltage of the second storage battery is 24 volts.
The preferred scheme is as follows: the first storage battery is a 48-volt lithium battery, the second storage battery is a 24-volt lead-acid storage battery, and the third DCDC converter is a 48-24V vehicle-mounted step-down DCDC converter.
The preferred scheme is as follows: the first storage battery, the third DCDC converter and the second storage battery are all connected with a power control unit, and when the power control unit detects that the electric quantity of the second storage battery is less than a set threshold value, the power control unit controls the third DCDC converter to convert the voltage of the first storage battery into 24V voltage and then charge the second storage battery.
The preferred scheme is as follows: the BSG motor is provided with two sets, the two sets of BSG motors are provided with an MCU controller and an inverter, the MCU controller is used for controlling the running state of the BSG motors, the inverter is used for converting direct current of the first storage battery into alternating current for driving the BSG motors, and the first storage battery drives the BSG motors to provide power assistance for the engine.
The preferred scheme is as follows: the starting power of the BSG motor is 5-20KW, and the starting torque of the BSG motor is 20-80 Nm.
The preferred scheme is as follows: the intelligent generator is provided with a generator controller, when the engine works in the operation high-efficiency area, the generator controller adjusts exciting current to enable the intelligent generator to generate electricity, and when the engine works in the operation low-efficiency area, the generator controller adjusts exciting current to control the intelligent generator to stop generating electricity.
On the basis of the technical scheme, compared with the prior art, the invention has the following advantages:
the electric system of the hybrid power commercial vehicle for generating power by using the solar energy and the waste heat of the waste gas integrates a BSG motor, an intelligent generator, a solar cell and a waste heat of the waste gas power generation device, and utilizes the BSG motor to generate power, the intelligent generator to generate power, the solar cell to generate power and the waste heat of the waste gas power generation device to generate power. The control strategy is optimized, so that the electric energy of the solar cell and the electric energy of the waste gas waste heat power generation device are guaranteed to be used firstly to the maximum extent, the energy conservation of the whole vehicle system is realized, the purposes of reducing the load of the engine and saving the fuel of the whole vehicle are achieved, and the fuel economy and the power performance of the engine are improved.
The BSG motor can provide power assistance for the engine, when the vehicle receives a starting instruction, the 48-volt lithium battery outputs electric energy to drive the BSG motor to operate, and the BSG motor transmits starting torque to the crankshaft pulley through a belt so as to assist the starter in starting. When an accelerator pedal is stepped to send an acceleration instruction, the 48V lithium battery outputs electric energy to drive the BSG motor to operate, and the BSG motor transmits starting torque to the crankshaft belt pulley through a belt, so that greater power is provided for the engine. When a brake pedal is stepped to send a brake instruction, the engine reversely drags the BSG motor to generate power through the crankshaft belt pulley, and the BSG motor charges surplus electric energy into the 48V lithium battery on the premise of meeting the power consumption requirement of the 48V vehicle-mounted system.
Drawings
FIG. 1 is a schematic structural diagram of an embodiment of the present invention;
fig. 2 is a schematic structural diagram of a dual-source power generation system for a refrigerator car using waste heat of exhaust gas and solar energy in the prior art.
Reference numerals:
the system comprises an engine 1, a temperature difference power generation device 2, a control management unit 3, a solar panel 4, a refrigerator car 5, a generator 6, a voltage stabilizer 7, a storage battery pack 8, a load 9 and transparent glass 13.
Detailed Description
The technical solutions of the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings, and it is to be understood that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments of the present invention without any inventive step, are within the scope of the present invention.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. It is to be noted that all the figures are exemplary representations. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
The present invention will be described in further detail below with reference to specific embodiments and with reference to the attached drawings.
Example 1
Referring to fig. 1, an embodiment of the present invention provides an electrical system of a hybrid commercial vehicle for generating power by using solar energy and waste heat of exhaust gas, including:
a first power generation unit having circuitry at 48 volts, the first power generation unit comprising: the BSG motor is connected with a crankshaft belt pulley of the engine through a belt, the BSG motor is electrically connected with the first storage battery, the solar battery is provided with a first DCDC converter, and the solar battery is electrically connected with the first storage battery through the first DCDC converter.
In the driving process, the BSG motor can provide power assistance for the engine, when the vehicle receives a starting command, the first storage battery outputs electric energy to drive the BSG motor to operate, and the BSG motor transmits starting torque to the crankshaft pulley through a belt so as to assist the starting of a starter of the engine. When an accelerator pedal is stepped to send an acceleration instruction, the first storage battery outputs electric energy to drive the BSG motor to operate, and the BSG motor transmits starting torque to the crankshaft belt pulley through a belt so as to provide larger power for the engine. When a brake pedal is stepped to send a brake instruction, the engine reversely drags the BSG motor to generate electricity through the crankshaft belt pulley, and on the premise of meeting the electricity demand of a circuit system of the first electricity generating unit, the BSG motor generates electricity to charge surplus energy into the first storage battery.
The solar cell is electrically connected with the first storage battery through the first DCDC converter, electric energy of the solar cell preferentially supplies power to a circuit system of the first power generation unit, and redundant electric energy is charged into the first storage battery.
A second power generation unit having circuitry at 24 volts, the second power generation unit comprising: intelligent generator and waste gas waste heat power generation facility. Wherein the intelligent generator is connected with a crankshaft pulley of the engine through a belt, and the intelligent generator is electrically connected with the second storage battery. The waste gas waste heat power generation device is provided with a second DCDC converter and is electrically connected with the second storage battery through the second DCDC converter.
In the driving process, the waste gas waste heat power generation device supplies power to a circuit system of the second power generation unit through the second DCDC converter, and redundant electric energy is charged into the second storage battery. When the electric quantity of the waste gas waste heat power generation device is not enough for the load of the whole vehicle, the load of the whole vehicle gets electricity from the second storage battery. When the electric quantity of the second storage battery is insufficient, the intelligent generator starts to generate electricity to supply power to the load of the whole vehicle, redundant electric energy is charged into the second storage battery, and meanwhile the waste gas and waste heat power generation device stores the electric energy into the second storage battery.
And the third DCDC converter is connected to the first storage battery and the second storage battery, and the first storage battery charges the second storage battery through the third DCDC converter.
When the vehicle is parked and the electric quantity of the second storage battery is insufficient, the first storage battery charges the second storage battery through the third DCDC converter, and the second storage battery supplies power to the vehicle load.
Principle of operation
In the driving process, the BSG motor can provide power assistance for the engine, when the vehicle receives a starting command, the first storage battery outputs electric energy to drive the BSG motor to operate, and the BSG motor transmits starting torque to the crankshaft pulley through a belt so as to assist the starting of a starter of the engine. When an accelerator pedal is stepped to send an acceleration instruction, the first storage battery outputs electric energy to drive the BSG motor to operate, and the BSG motor transmits starting torque to the crankshaft belt pulley through a belt so as to provide larger power for the engine. When a brake pedal is stepped to send a brake instruction, the engine reversely drags the BSG motor to generate electricity through the crankshaft belt pulley, and the BSG motor charges surplus electric energy into the first storage battery on the premise of meeting the electricity demand of the circuit system of the first electricity generation unit.
The solar cell is electrically connected with the first storage battery through the first DCDC converter, electric energy of the solar cell preferentially supplies power to a circuit system of the first power generation unit, and redundant electric energy is charged into the first storage battery.
The waste gas waste heat power generation device supplies power to a circuit system of the second power generation unit through the second DCDC converter, and redundant electric energy is charged into the second storage battery. When the electric quantity of the waste gas waste heat power generation device is not enough for the load of the whole vehicle, the load of the whole vehicle gets electricity from the second storage battery. When the electric quantity of the second storage battery is insufficient, the intelligent generator starts to generate electricity to supply power to the load of the whole vehicle, redundant electric energy is charged into the second storage battery, and meanwhile the waste gas and waste heat power generation device stores the electric energy into the second storage battery.
When the vehicle is parked and the electric quantity of the second storage battery is insufficient, the first storage battery charges the second storage battery through the third DCDC converter, and the second storage battery supplies power to the vehicle load.
The electric system of the hybrid power commercial vehicle integrates the BSG motor, the intelligent generator, the solar cell and the waste gas waste heat power generation device, and the BSG motor is used for generating power, the intelligent generator is used for generating power, the solar cell is used for generating power and the waste gas waste heat power generation device is used for generating power. The control strategy is optimized, so that the electric energy of the solar cell and the electric energy of the waste gas waste heat power generation device are guaranteed to be used firstly to the maximum extent, the energy conservation of the whole vehicle system is realized, the purposes of reducing the load of the engine and saving the fuel of the whole vehicle are achieved, and the fuel economy and the power performance of the engine are improved.
Example 2
Referring to fig. 1, an embodiment of the present invention provides an electric system of a hybrid commercial vehicle for generating power by using solar energy and waste heat of exhaust gas, and the present embodiment is different from embodiment 1 in that: the first power generation unit further comprises an air conditioner compressor and a power control unit, and the air conditioner compressor is electrically connected with the BSG motor, the solar battery and the first storage battery in parallel. The power control unit is electrically connected with the BSG motor and the first storage battery and is used for detecting the residual electric quantity of the first storage battery and controlling the BSG motor to charge the first storage battery.
The voltage of the air-conditioning compressor is 48 volts, the voltage of the BSG motor is 48 volts, direct current electricity generated by the solar battery is converted into 48-volt direct current electricity through the first DCDC converter, and the voltage of the first storage battery is 48 volts. The BSG motor recovers braking energy into the first storage battery, meanwhile, direct current generated by the solar battery is converted into 48-volt direct current through the first DCDC converter to supply power to the air conditioner compressor, and redundant electric energy is stored in the first storage battery. The air conditioner compressor can also take electricity from the first storage battery. When the power control unit detects that the electric quantity of the first storage battery is insufficient during driving, the power control unit sends a starting instruction to the BSG motor, and the engine drives the BSG motor to charge the first storage battery. When the vehicle is stopped, the air conditioner compressor directly gets electricity from the first storage battery or the solar battery, when the power control unit detects that the electric quantity of the first storage battery is insufficient, the air conditioner compressor is limited in current, and the air conditioner compressor is finished after 10 min.
Example 3
Referring to fig. 1, an embodiment of the present invention provides an electric system of a hybrid commercial vehicle for generating power by using solar energy and waste heat of exhaust gas, and the present embodiment is different from embodiment 1 in that: the second power generation unit further comprises a vehicle load and a power control unit, and the vehicle load is respectively connected with the intelligent generator, the waste gas waste heat power generation device and the second storage battery in parallel and electrically. The power control unit is electrically connected with the second storage battery and the intelligent generator and is used for detecting the residual electric quantity of the second storage battery and controlling the intelligent generator to charge the second storage battery.
The voltage of the vehicle load is 24 volts, the voltage of the intelligent generator is 24 volts, direct current electricity generated by the waste gas waste heat power generation device is converted into 24-volt direct current electricity through the second DCDC converter, and the voltage of the second storage battery is 24 volts.
The waste gas waste heat power generation device generates power to supply power to the load of the whole vehicle, redundant electric energy charges the second storage battery, and when the waste gas waste heat power generation device does not supply power to the load of the whole vehicle, the load of the whole vehicle gets electricity from the second storage battery. When the power control unit detects that the electric quantity of the second storage battery is insufficient, the power control unit sends a starting instruction to the intelligent generator, the engine drives the intelligent generator to supply power to the load for the whole vehicle, and redundant electric energy is stored in the second storage battery.
Example 4
Referring to fig. 1, an embodiment of the present invention provides an electric system of a hybrid commercial vehicle for generating power by using solar energy and waste heat of exhaust gas, and the present embodiment is different from embodiment 1 in that: the first storage battery is a 48-volt lithium battery, the second storage battery is a 24-volt lead-acid storage battery, and the third DCDC converter is a 48-24V vehicle-mounted step-down DCDC converter. The first storage battery, the third DCDC converter and the second storage battery are all connected with the power control unit, and when the power control unit detects that the electric quantity of the second storage battery is less than a set threshold value, the power control unit controls the third DCDC converter to convert the voltage of the first storage battery into 24V voltage and then charge the second storage battery.
The first storage battery is a 48-volt lithium battery, the second storage battery is a 24-volt lead-acid storage battery, when the power control unit detects that the electric quantity of the second storage battery is less than 30%, and when the power control unit detects that the electric quantity of the first storage battery is greater than 80%, the power control unit sends a starting instruction to the third DCDC converter, and the third DCDC converter converts the voltage of the first storage battery into 24-volt voltage and then charges the second storage battery.
Example 5
Referring to fig. 1, an embodiment of the present invention provides an electric system of a hybrid commercial vehicle for generating power by using solar energy and waste heat of exhaust gas, and the present embodiment is different from embodiment 1 in that: the BSG motors are provided with two sets, the two sets of BSG motors are provided with MCU controllers and inverters, the starting power of the BSG motors is 5-20KW, and the starting torque of the BSG motors is 20-80 Nm.
The MCU controller is used for controlling the running state of the BSG motor, when the vehicle receives a starting instruction, the MCU controller controls the first storage battery to output electric energy to drive the BSG motor to run, and the BSG motor transmits starting torque to the crankshaft pulley through a belt, so that the starting of a starter of the engine is assisted. When an accelerator pedal is stepped to send an acceleration instruction, the MCU controller controls the first storage battery to output electric energy to drive the BSG motor to operate, and the BSG motor transmits starting torque to the crankshaft belt pulley through a belt so as to provide larger power for the engine. When a brake pedal is stepped to send a brake instruction, the engine reversely drags the BSG motor to generate electricity through the crankshaft belt pulley, and the MCU controller controls the BSG motor to generate electricity to charge surplus energy into the first storage battery on the premise of meeting the electricity demand of the circuit system of the first electricity generating unit.
The inverter is used for converting the 48V direct current of the first storage battery into 48V alternating current for driving the BSG motor, and the MCU controller controls the first storage battery to drive the BSG motor to provide power assistance for the engine.
Example 6
The embodiment of the invention provides an electric system of a hybrid power commercial vehicle for power generation by solar energy and waste heat of exhaust gas, which is different from the embodiment 1 in that: the intelligent generator is provided with a generator controller, when the engine works in the high-efficiency operation area, the generator controller regulates exciting current through the excitation regulator to enable the intelligent generator to generate power, and when the engine works in the low-efficiency operation area, the generator controller regulates the exciting current through the excitation regulator to control the intelligent generator to stop generating power, so that the load of the engine is reduced.
Various modifications and variations of the embodiments of the present invention may be made by those skilled in the art, and they are also within the scope of the present invention, provided they are within the scope of the claims of the present invention and their equivalents.
What is not described in detail in the specification is prior art that is well known to those skilled in the art.
Claims (10)
1. The utility model provides a hybrid commercial car electrical system of solar energy and waste gas waste heat power generation which characterized in that includes:
a first power generation unit comprising: the BSG motor is connected with a crankshaft belt pulley of the engine through a belt, the BSG motor is electrically connected with the first storage battery, the solar battery is provided with a first DCDC converter, and the solar battery is electrically connected with the first storage battery through the first DCDC converter;
a second power generation unit comprising: the intelligent generator is connected with a crankshaft pulley of the engine through a belt, the intelligent generator is electrically connected with a second storage battery, the waste gas waste heat power generation device is provided with a second DCDC converter, and the waste gas waste heat power generation device is electrically connected with the second storage battery through the second DCDC converter;
and the third DCDC converter is connected with the first storage battery and the second storage battery, and the first storage battery charges the second storage battery through the third DCDC converter.
2. The electrical system of claim 1, wherein the electrical system comprises:
the first power generation unit further comprises an air conditioner compressor and a power control unit, the air conditioner compressor is respectively connected with the BSG motor, the solar battery and the first storage battery in parallel, the power control unit is electrically connected with the BSG motor and the first storage battery, and the power control unit is used for detecting the residual electric quantity of the first storage battery and controlling the BSG motor to charge the first storage battery.
3. The electrical system of claim 2, wherein the electrical system comprises:
the voltage of the air conditioner compressor is 48 volts, the voltage of the BSG motor is 48 volts, direct current electricity generated by the solar cell is converted into direct current electricity of 48 volts through the first DCDC converter, and the voltage of the first storage battery is 48 volts.
4. The electrical system of claim 1, wherein the electrical system comprises:
the second power generation unit further comprises a vehicle load and a power control unit, the vehicle load is connected with the intelligent power generator, the waste gas waste heat power generation device and the second storage battery in parallel, the power control unit is electrically connected with the second storage battery and the intelligent power generator, and the power control unit is used for detecting the residual electric quantity of the second storage battery and controlling the intelligent power generator to charge the second storage battery.
5. The electric system of the hybrid commercial vehicle for generating power by using solar energy and waste heat of exhaust gas as claimed in claim 4, wherein:
the voltage of the vehicle load is 24 volts, the voltage of the intelligent generator is 24 volts, direct current electricity generated by the waste gas waste heat power generation device is converted into 24-volt direct current electricity through the second DCDC converter, and the voltage of the second storage battery is 24 volts.
6. The electrical system of claim 1, wherein the electrical system comprises:
the first storage battery is a 48-volt lithium battery, the second storage battery is a 24-volt lead-acid storage battery, and the third DCDC converter is a 48-24V vehicle-mounted step-down DCDC converter.
7. The electric system of the hybrid commercial vehicle for generating power by using solar energy and waste heat of exhaust gas as claimed in claim 6, wherein:
the first storage battery, the third DCDC converter and the second storage battery are all connected with a power control unit, and when the power control unit detects that the electric quantity of the second storage battery is less than a set threshold value, the power control unit controls the third DCDC converter to convert the voltage of the first storage battery into 24V voltage and then charge the second storage battery.
8. The electrical system of claim 1, wherein the electrical system comprises:
the BSG motor is provided with two sets, the two sets of BSG motors are provided with an MCU controller and an inverter, the MCU controller is used for controlling the running state of the BSG motors, the inverter is used for converting direct current of the first storage battery into alternating current for driving the BSG motors, and the first storage battery drives the BSG motors to provide power assistance for the engine.
9. The electrical system of claim 1, wherein the electrical system comprises:
the starting power of the BSG motor is 5-20KW, and the starting torque of the BSG motor is 20-80 Nm.
10. The electrical system of claim 1, wherein the electrical system comprises:
the intelligent generator is provided with a generator controller, when the engine works in the operation high-efficiency area, the generator controller adjusts exciting current to enable the intelligent generator to generate electricity, and when the engine works in the operation low-efficiency area, the generator controller adjusts exciting current to control the intelligent generator to stop generating electricity.
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