CN112248792A - Hybrid power system and engineering machinery - Google Patents

Hybrid power system and engineering machinery Download PDF

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Publication number
CN112248792A
CN112248792A CN202011277223.4A CN202011277223A CN112248792A CN 112248792 A CN112248792 A CN 112248792A CN 202011277223 A CN202011277223 A CN 202011277223A CN 112248792 A CN112248792 A CN 112248792A
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China
Prior art keywords
power
power battery
motor generator
engine
battery pack
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Pending
Application number
CN202011277223.4A
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Chinese (zh)
Inventor
汪建利
刘永东
陈日
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Sany Automobile Manufacturing Co Ltd
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Sany Automobile Manufacturing Co Ltd
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Application filed by Sany Automobile Manufacturing Co Ltd filed Critical Sany Automobile Manufacturing Co Ltd
Priority to CN202011277223.4A priority Critical patent/CN112248792A/en
Publication of CN112248792A publication Critical patent/CN112248792A/en
Pending legal-status Critical Current

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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
    • B60K6/50—Architecture of the driveline characterised by arrangement or kind of transmission units
    • 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
    • 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
    • B60K6/38—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 driveline clutches
    • B60K6/387—Actuated clutches, i.e. clutches engaged or disengaged by electric, hydraulic or mechanical actuating means
    • 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
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
    • B60W10/00—Conjoint control of vehicle sub-units of different type or different function
    • B60W10/02—Conjoint control of vehicle sub-units of different type or different function including control of driveline clutches
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
    • B60W10/00—Conjoint control of vehicle sub-units of different type or different function
    • B60W10/04—Conjoint control of vehicle sub-units of different type or different function including control of propulsion units
    • B60W10/06—Conjoint control of vehicle sub-units of different type or different function including control of propulsion units including control of combustion engines
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
    • B60W10/00—Conjoint control of vehicle sub-units of different type or different function
    • B60W10/04—Conjoint control of vehicle sub-units of different type or different function including control of propulsion units
    • B60W10/08—Conjoint control of vehicle sub-units of different type or different function including control of propulsion units including control of electric propulsion units, e.g. motors or generators
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
    • B60W10/00—Conjoint control of vehicle sub-units of different type or different function
    • B60W10/30—Conjoint control of vehicle sub-units of different type or different function including control of auxiliary equipment, e.g. air-conditioning compressors or oil pumps
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
    • B60W20/00—Control systems specially adapted for hybrid vehicles
    • 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
    • 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
    • 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
    • Y02T10/92—Energy efficient charging or discharging systems for batteries, ultracapacitors, supercapacitors or double-layer capacitors specially adapted for vehicles

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

Abstract

The invention provides a hybrid power system and engineering machinery. Wherein, hybrid power system includes: an engine; the transmission assembly can be connected with or disconnected from the engine; the power battery pack is electrically connected with an electric actuator of the engineering machinery so as to supply power to the electric actuator; the motor generator set is in transmission connection with the output end of the transmission assembly and is electrically connected with the power battery pack; the hydraulic pump is in transmission connection with the transmission assembly and is used for driving a hydraulic system of the engineering machinery; the engine can drive the motor generator set to charge the power battery pack, and the power battery pack can also supply power to the motor generator set, so that the motor generator set outputs power to the hydraulic pump. According to the technical scheme, the power battery pack is used as a main energy device, the hydraulic system of the engineering machinery and the electric actuating element are driven, the energy consumption of the engine can be effectively reduced, and the energy conservation, emission reduction, noise reduction and air pollution reduction are facilitated.

Description

Hybrid power system and engineering machinery
Technical Field
The application relates to the technical field of hybrid power systems, in particular to a hybrid power system and engineering machinery.
Background
The engineering machinery mostly adopts a diesel engine as a power device, but the diesel engine has large power consumption and serious pollution and large noise. The hybrid power system with the engine and the power battery pack is provided in the prior art, the power battery pack is used as an auxiliary power source of the engine, but the hybrid power system in the scheme is complex in structure, the engine is used as a main power source, power consumption is still large, and effects on energy conservation, emission reduction and noise reduction are limited.
Disclosure of Invention
According to an embodiment of the present invention, it is intended to improve at least one of technical problems existing in the prior art or the related art.
To this end, it is an object of an embodiment according to the present invention to provide a hybrid system.
Another object according to an embodiment of the present invention is to provide a working machine.
To achieve the above object, according to an embodiment of a first aspect of the present invention, there is provided a hybrid system including: an engine; the transmission assembly can be connected with or disconnected from the engine; the power battery pack is electrically connected with an electric actuator of the engineering machinery so as to supply power to the electric actuator; the motor generator set is in transmission connection with the output end of the transmission assembly and is electrically connected with the power battery pack; the hydraulic pump is in transmission connection with the transmission assembly and is used for driving a hydraulic system of the engineering machinery; the engine can output power to the motor generator set and the hydraulic pump through the transmission assembly to enable the motor generator set to charge the power battery pack, and when the engine is disconnected from the transmission assembly, the power battery pack supplies power to the motor generator set to enable the motor generator set to output power to the hydraulic pump.
According to an embodiment of the first aspect of the present invention, the hybrid system includes an engine, a transmission assembly, a power battery pack, a motor-generator set, and a hydraulic pump for a construction machine. The power battery pack is used as a main energy device of the hybrid power system, and the engine is used as an auxiliary energy device; the engine and the transmission assembly can be connected or disconnected. The motor generator set integrates the functions of a generator and a motor, and can generate power outwards when power is input and output power outwards when electric energy is input. The power battery pack is respectively electrically connected with the electric generating set and the electric actuating element of the engineering machinery and can supply power to the electric actuating element; when the engine and the transmission assembly are in a disconnected state, the power battery pack can supply power to the motor generator set so that the motor generator set outputs power, and the motor generator set is in transmission connection with the hydraulic pump through the transmission assembly so as to output power to the hydraulic pump, drive the hydraulic pump to operate and further drive a hydraulic system of the engineering machinery to work. When the engine is connected with the transmission assembly, the engine outputs power through the transmission assembly to drive the hydraulic pump to operate, and simultaneously drives the motor generator set to generate power and charge the power battery pack so as to supplement the electric energy of the power battery pack.
The hybrid power system in the scheme takes the power battery pack as a main energy device, realizes the driving of a hydraulic system of the engineering machinery and the power supply of an electric execution element, can effectively reduce the energy consumption of an engine, is beneficial to energy conservation and emission reduction and noise and air pollution reduction, simultaneously realizes the integration of power generation equipment and electric drive equipment, simplifies the system and is beneficial to cost reduction.
In addition, the hybrid power system provided by the embodiment of the invention can also have the following additional technical characteristics:
in the above technical solution, the motor generator set includes: the motor generator is in transmission connection with the output end of the transmission assembly; the first motor controller is used for converting direct current and alternating current between the motor generator and the power battery pack and controlling the working state of the motor generator; when the engine outputs power through the transmission assembly, the first motor controller can control whether the motor generator generates power or not, the first motor controller controls the power generation power of the motor generator when the motor generator generates power, and the first motor controller controls the output rotating speed of the motor generator when the motor generator outputs power.
In the technical scheme, the motor generator set comprises a motor generator and a first motor controller which are electrically connected with each other, the first motor controller is electrically connected with the power battery pack so as to realize the conversion between alternating current and direct current between the motor generator and the power battery pack, and the working state of the motor generator is controlled by the first motor controller. Specifically, when the engine outputs power to the motor generator through the transmission assembly, the first motor controller can control the motor generator to generate power under power driving so as to charge the power battery pack, and can also control the motor generator not to generate power so as to perform corresponding operation according to the electric quantity state of the power battery pack. When the power battery pack supplies power to the motor generator to enable the motor generator to output power, the first motor controller can control the output rotating speed of the motor generator so as to meet the use requirements of the transmission assembly and the hydraulic pump. When the motor generator generates electricity, the first motor controller can also control the power generation power of the motor generator so as to meet the charging requirement of the power battery pack.
In the above technical solution, the transmission assembly includes: the input end of the clutch can be connected with or disconnected from the output end of the engine; and the transmission shaft is connected with the output end of the clutch and is simultaneously in transmission connection with the motor generator and the hydraulic pump.
In this solution, the transmission assembly comprises a clutch and a transmission shaft. The output end of the clutch is connected with the transmission shaft and is simultaneously in transmission connection with the motor generator and the hydraulic pump through the transmission shaft; the input end of the clutch can be connected with or disconnected from the output end of the engine so as to meet different requirements of engineering machinery, specifically, when the power battery pack supplies power, the input end of the clutch can be disconnected from the output end of the engine, and at the moment, the motor generator transmits power to the hydraulic pump through the transmission shaft; when the power battery pack needs to be charged, the input end of the clutch can be connected with the output end of the engine, at the moment, the output power of the engine drives the hydraulic pump to operate, and meanwhile, the motor generator is driven to generate electricity so as to supplement the electric energy of the power battery pack. The motor generator and the hydraulic pump are connected to the transmission shaft at the same time, so that intermediate transmission links are reduced, and the transmission efficiency is relatively high.
In the above technical solution, the transmission assembly includes: the input end of the clutch can be connected with or disconnected from the output end of the engine; the input end of the transfer case is connected with the output end of the clutch, and the two output ends of the transfer case are in transmission connection with the motor generator and the hydraulic pump respectively.
In this solution, the transmission assembly comprises a clutch and a transfer case. The output end of the clutch is connected with the input end of the transfer case, and the two output ends of the transfer case are respectively in transmission connection with the motor generator and the hydraulic pump; the input end of the clutch can be connected with or disconnected from the output end of the engine so as to meet different requirements of the engineering machinery. Specifically, when the power battery pack supplies power, the input end of the clutch can be disconnected with the output end of the engine, the motor generator reversely drives the transfer case to run, and then the transfer case is in transmission connection with the hydraulic pump to transmit power to the hydraulic pump; when the power battery pack needs to be charged, the input end of the clutch can be connected with the output end of the engine, and at the moment, the output power of the engine is distributed to the hydraulic pump and the motor generator through the transfer case so as to drive the hydraulic pump to operate and drive the motor generator to generate electricity and supplement the electric energy of the power battery pack. The transfer case can distribute corresponding power according to respective power requirements of the motor generator and the hydraulic pump, so that the motor generator and the hydraulic pump can obtain different input rotating speeds respectively, and the adaptability is stronger.
In the above technical solution, the hybrid system further includes: and the clutch controller is electrically connected with the clutch and the power battery pack, and controls the input end of the clutch to be connected or disconnected with the output end of the engine according to the electric quantity of the power battery pack.
In the technical scheme, the clutch controller electrically connected with the power battery pack is arranged to acquire the electric quantity information of the power battery pack and control the clutch to work according to the electric quantity of the power battery pack so as to realize the automatic connection or disconnection between the input end of the clutch and the output end of the engine.
In the above technical solution, the hybrid system further includes: and the second motor controller is arranged in a circuit connecting the power battery pack and the electric actuator and used for converting direct current and alternating current between the power battery pack and the electric actuator and controlling the output rotating speed or torque of the electric actuator.
In the technical scheme, a second motor controller is arranged in a line connecting the power battery pack and the electric actuator, so that when the electric actuator is a motor, the conversion of direct current and alternating current between the power battery pack and the electric actuator is realized. The second motor controller can also control the rotating speed or the torque of the motor so as to meet the working requirement of the electric actuator.
In the above technical solution, the power battery pack includes: a power battery; the battery management system unit is electrically connected with the power battery; the power battery is electrically connected with the motor generator and the electric execution element through the battery management system unit.
In the technical scheme, the power battery pack comprises a power battery and a battery management system unit. And the battery management system unit is used for monitoring and controlling the power battery. The battery management system unit is respectively electrically connected with the power battery, the motor generator and the electric execution element so as to control the charging and discharging process of the power battery, so that the power battery can normally work, the power battery can be protected, and the service life of the power battery can be prolonged.
In the above technical scheme, the power battery is provided with an external charging interface.
In the technical scheme, the power battery is provided with the external charging interface, so that the power battery can be connected to external charging equipment for charging when the engineering machinery is in a non-working state, the energy consumption of the engine is further reduced, and the effects of saving energy, reducing emission and reducing noise and air pollution are achieved.
In an embodiment according to a second aspect of the invention there is provided a work machine comprising: a vehicle body; the hydraulic system is arranged on the vehicle body; the electric actuator is arranged on the vehicle body; the hybrid system according to any one of the embodiments of the first aspect described above, configured to drive the hydraulic system to operate, and to supply power to the electric actuator.
According to an embodiment of the second aspect of the present invention, the construction machine includes a vehicle body, a hydraulic system, an electric actuator, and the hybrid system in the embodiment of the first aspect. Hydraulic systems and electrical actuators are used to implement various work operations of the work machine. The power battery pack in the hybrid power system is electrically connected with the electric actuator to supply power to the electric actuator; the power battery pack can also output power to the hydraulic pump through the motor generator set and the transmission assembly, and further drive the hydraulic system to work. When the electric quantity of the power battery pack is low or under special conditions, an engine of the hybrid power system can be connected with the transmission assembly to output power to the hydraulic pump to drive the hydraulic system to work, and meanwhile, the motor generator is driven to generate power to charge the power battery.
In addition, the engineering machine in the present aspect further has all the beneficial effects of the hybrid power system in the embodiment of the first aspect, and details are not described herein again.
In the technical scheme, the hydraulic system comprises at least one of a driving system, a steering system, a braking system and a lifting system; and/or the electric actuator comprises at least one of an electric motor and an electric cylinder.
In the technical scheme, the hydraulic system can be one or more of a running system, a steering system, a braking system or a lifting system, and can be driven by the hybrid power system in the scheme to realize different operation functions when other hydraulic execution systems can be adopted. The electric actuator can be one or the combination of two of a motor and an electric cylinder, and can be supplied with power through the power battery pack in the scheme so as to realize the electrically driven operation function.
Additional aspects and advantages of embodiments of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention.
Drawings
The above and/or additional aspects and advantages of embodiments of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
FIG. 1 illustrates a schematic block diagram of a hybrid powertrain system according to an embodiment of the present invention;
FIG. 2 illustrates a schematic block diagram of a hybrid powertrain system according to an embodiment of the present invention;
FIG. 3 illustrates a schematic block diagram of a hybrid powertrain system according to an embodiment of the present invention;
FIG. 4 illustrates a schematic block diagram of a hybrid powertrain system according to an embodiment of the present invention;
FIG. 5 illustrates a schematic block diagram of a hybrid powertrain system according to an embodiment of the present invention;
FIG. 6 illustrates a schematic block diagram of a hybrid powertrain system according to an embodiment of the present invention;
FIG. 7 illustrates a schematic block diagram of a hybrid powertrain system according to an embodiment of the present invention;
FIG. 8 illustrates a schematic block diagram of a hybrid powertrain system according to an embodiment of the present invention;
FIG. 9 illustrates a schematic block diagram of a hybrid powertrain system according to an embodiment of the present invention;
FIG. 10 illustrates a schematic block diagram of a hybrid powertrain system according to an embodiment of the present invention;
fig. 11 shows a schematic block diagram of a working machine according to an embodiment of the invention.
Wherein, the correspondence between the reference numbers and the names of the components in fig. 1 to 11 is as follows:
the system comprises a hybrid power system 1, an engine 11, a transmission assembly 12, a clutch 121, a transmission shaft 122, a transfer case 123, a clutch controller 124, a power battery pack 13, a power battery 131, a battery management system unit 132, a motor generator set 14, a motor generator 141, a first motor controller 142, a hydraulic pump 15, a second motor controller 16, an engineering machine 2, a vehicle body 21, a hydraulic system 22 and an electric actuator 23.
Detailed Description
In order that the above objects, features and advantages of the embodiments according to the present invention can be more clearly understood, embodiments according to the present invention will be described in further detail with reference to the accompanying drawings and detailed description. It should be noted that the embodiments and features of the embodiments of the present application may be combined with each other without conflict.
In the following description, numerous specific details are set forth in order to provide a thorough understanding of embodiments according to the invention, however, embodiments according to the invention may be practiced in other ways than those described herein, and therefore the scope of protection of this application is not limited by the specific embodiments disclosed below.
Hybrid powertrain systems and work machines according to some embodiments of the present invention are described below with reference to fig. 1-11.
Example one
The embodiment provides a hybrid power system 1 for an engineering machine. As shown in fig. 1, the hybrid system 1 includes an engine 11, a transmission assembly 12, a power battery pack 13, a motor-generator set 14, and a hydraulic pump 15.
The power battery pack 13 is used as a main energy device of the hybrid power system 1, and the engine 11 is used as an auxiliary energy device. The engine 11 and the transmission assembly 12 can be connected or disconnected, and when the engine 11 and the transmission assembly 12 are disconnected, electric energy is provided through the power battery pack 13; when the engine 11 is connected to the transmission assembly 12, power is output by the engine 11.
The motor generator unit 14 integrates functions of a generator and a motor, and can generate power outwards when power is input to the motor generator unit 14 and output power outwards when power is input to the motor generator unit 14. The motor generator set 14 and the hydraulic pump 15 are both connected with the transmission assembly 12, and the hydraulic pump 15 is used for driving a hydraulic system 22 of the engineering machinery. The power battery packs 13 are respectively electrically connected with the electric actuators 23 of the construction machine so as to supply power to the electric actuators 23; the power battery pack 13 is also electrically connected to the motor generator set 14 to supply power to the motor generator set 14 or to obtain electric energy through the motor generator set 14.
When the engine 11 and the transmission assembly 12 are in a disconnected state, the power battery pack 13 supplies power to the motor generator set 14, so that the motor generator set 14 outputs power outwards, the power is transmitted to the hydraulic pump 15 through the transmission assembly 12, the hydraulic pump 15 is operated, and a hydraulic system 22 of the engineering machinery is driven to work. When the engine 11 is connected with the transmission assembly 12, the engine 11 outputs power through the transmission assembly 12, drives the hydraulic pump 15 to operate, and simultaneously drives the motor generator set 14 to generate power and charge the power battery pack 13 so as to supplement the electric energy of the power battery pack 13.
In the hybrid power system 1 in this embodiment, the power battery pack 13 is used as a main energy device to drive the hydraulic system 22 of the engineering machine and supply power to the electrical actuator 23, so that energy consumption of the engine 11 can be effectively reduced, energy saving and emission reduction are facilitated, noise and air pollution are reduced, integration of power generation equipment and electric drive equipment is achieved, the system is simplified, and cost reduction is facilitated.
Example two
The embodiment provides a hybrid power system 1 for an engineering machine. As shown in fig. 1 and 2, the hybrid system 1 includes an engine 11, a transmission assembly 12, a power battery pack 13, a motor-generator set 14, and a hydraulic pump 15.
The power battery pack 13 is used as a main energy device of the hybrid power system 1, and the engine 11 is used as an auxiliary energy device. The engine 11 and the transmission assembly 12 can be connected or disconnected, and when the engine 11 and the transmission assembly 12 are disconnected, electric energy is provided through the power battery pack 13; when the engine 11 is connected to the transmission assembly 12, power is output by the engine 11.
The motor generator set 14 includes a motor generator 141 and a first motor controller 142. The motor generator 141 integrates functions of a generator and a motor, and generates power to the outside when power is input to the motor generator 141 and outputs power to the outside when power is input to the motor generator 141. The first motor controller 142 is electrically connected to the motor generator 141 and the power battery pack 13 to achieve conversion of alternating current and direct current between the motor generator 141 and the power battery pack 13. The motor generator 141 and the hydraulic pump 15 are both connected to the transmission assembly 12, and the hydraulic pump 15 is used for driving the hydraulic system 22 of the construction machine. The power battery packs 13 are respectively electrically connected with the electric actuators 23 of the construction machine so as to supply power to the electric actuators 23; the power battery pack 13 is electrically connected to the motor generator 141 through the first motor controller 142 to supply power to the motor generator 141 or to take electric power through the motor generator 141.
When the engine 11 and the transmission assembly 12 are disconnected, the power battery pack 13 supplies power to the motor generator 141, so that the motor generator 141 outputs power to the outside, and the power is transmitted to the hydraulic pump 15 through the transmission assembly 12, so that the hydraulic pump 15 is operated to drive the hydraulic system 22 of the construction machine to operate. The first motor controller 142 can control the output speed of the motor generator 141 to meet the use requirement of the transmission assembly 12 and the hydraulic pump 15. When the engine 11 is connected with the transmission assembly 12, the engine 11 outputs power through the transmission assembly 12 to drive the hydraulic pump 15 to operate, at this time, the first motor controller 142 may control the motor generator 141 to generate or not to generate power according to the actual demand of the power battery pack 13, so as to generate power through the motor generator 141 and charge the power battery pack 13 when the power battery pack 13 has a charging demand, and simultaneously control the generated power of the motor generator 141 to supplement the electric energy of the power battery pack 13, and when the power battery pack 13 does not need to be charged, control the motor generator 141 to idle and not generate power.
In the hybrid power system 1 in this embodiment, the power battery pack 13 is used as a main energy device to drive the hydraulic system 22 of the engineering machine and supply power to the electrical actuator 23, so that energy consumption of the engine 11 can be effectively reduced, energy saving and emission reduction are facilitated, noise and air pollution are reduced, integration of power generation equipment and electric drive equipment is achieved, the system is simplified, and cost reduction is facilitated.
EXAMPLE III
The embodiment provides a hybrid system 1, which is further improved on the basis of the second embodiment.
As shown in fig. 1 and 3, the transmission assembly 12 includes a clutch 121 and a transmission shaft 122. The output of the clutch 121 is connected to the drive shaft 122, and the input of the clutch 121 is connectable to or disconnectable from the output of the engine 11. The motor generator 141 and the hydraulic pump 15 are both in transmission connection with the transmission shaft 122, specifically, when power is supplied through the power battery pack 13, the input end of the clutch 121 is disconnected from the output end of the engine 11, and at this time, the motor generator 141 outputs power under the action of the electric energy supplied by the power battery pack 13 and drives the hydraulic pump 15 to operate through the transmission shaft 122; when the power battery pack 13 needs to be charged, the input end of the clutch 121 is connected with the output end of the engine 11, at this time, the motor generator 141 generates electricity under the driving of the engine 11 to charge the power battery pack 13, and simultaneously, the output power of the engine 11 is transmitted to the hydraulic pump 15 through the transmission shaft 122, so that the hydraulic pump 15 drives the hydraulic system 22 of the construction machine to work. The motor generator 141 and the hydraulic pump 15 are both connected to the transmission shaft 122, so that intermediate transmission links are reduced, and the transmission efficiency is relatively high.
Further, as shown in fig. 4, the transmission assembly 12 further includes a clutch controller 124, the clutch controller 124 is electrically connected to the power battery pack 13 and the clutch 121, the clutch controller 124 obtains information of the electric quantity of the power battery pack 13, and controls the clutch 121 to operate according to the electric quantity of the power battery pack 13, so as to control the input terminal of the clutch 121 to be disconnected from the output terminal of the engine 11 when the electric quantity of the power battery pack 13 is sufficient, and control the input terminal of the clutch 121 to be connected to the output terminal of the engine 11 when the electric quantity of the power battery pack 13 is low.
For example, the power battery pack 13 is preset with a first power threshold and a second power threshold, and the first power threshold is smaller than the second power threshold. When the power battery pack 13 supplies power to the outside, when the power is lower than the first power threshold, it indicates that the power of the power battery pack 13 is low, the clutch controller 124 controls the input end of the clutch 121 to be connected with the output end of the engine 11, so as to use the output power of the engine 11 as the auxiliary power of the system, and simultaneously drive the motor generator 141 to generate power to charge the power battery pack 13. When the electric quantity of the power battery pack 13 is higher than the second electric quantity threshold value during the charging process, which indicates that the electric quantity of the power battery pack 13 is sufficient, the clutch controller 124 controls the input end of the clutch 121 to be disconnected from the output end of the engine 11, so as to supply power to the motor generator 141 through the power battery, and enable the motor generator 141 to output power. The first power threshold may be set to 10% to 30% of the total power, and the second power threshold may be set to 70% to 90% of the total power.
Example four
The embodiment provides a hybrid system 1, which is further improved on the basis of the second embodiment.
As shown in fig. 1 and 5, the transmission assembly 12 includes a clutch 121 and a transfer case 123. The output of the clutch 121 is connected to the input of the transfer case 123, and the input of the clutch 121 is connectable to or disconnectable from the output of the engine 11. The motor generator 141 is drivingly connected to one output of the transfer case 123, and the hydraulic pump 15 is drivingly connected to the other output of the transfer case 123. Specifically, when the power battery pack 13 supplies power to the outside, the input end of the clutch 121 is disconnected from the output end of the engine 11, the motor generator 141 outputs power under the action of the electric energy of the power battery pack 13 and reversely drives the transfer case 123 to operate, and further drives the hydraulic pump 15 to operate through the transfer case 123, so as to drive the hydraulic system 22 of the engineering machinery to work; when the power battery pack 13 needs to be charged, the input end of the clutch 121 is connected with the output end of the engine 11, at this time, the output power of the engine 11 is distributed to the hydraulic pump 15 and the motor generator 141 through the transfer case 123, the motor generator 141 generates power under the driving of the engine 11 and charges the power battery pack 13, and simultaneously, the hydraulic pump 15 runs under the driving of the engine 11, and further drives the hydraulic system 22 of the construction machine to work. The transfer case 123 can distribute corresponding power according to respective power requirements of the motor generator 141 and the hydraulic pump 15, so that the motor generator 141 and the hydraulic pump 15 can respectively obtain different input rotating speeds, and adaptability is stronger.
Further, as shown in fig. 6, the transmission assembly 12 further includes a clutch controller 124, the clutch controller 124 is electrically connected to the power battery pack 13 and the clutch 121, the clutch controller 124 obtains information of the electric quantity of the power battery pack 13, and controls the clutch 121 to operate according to the electric quantity of the power battery pack 13, so as to control the input terminal of the clutch 121 to be disconnected from the output terminal of the engine 11 when the electric quantity of the power battery pack 13 is sufficient, and control the input terminal of the clutch 121 to be connected to the output terminal of the engine 11 when the electric quantity of the power battery pack 13 is low.
For example, the power battery pack 13 is preset with a first power threshold and a second power threshold, and the first power threshold is smaller than the second power threshold. When the power battery pack 13 supplies power to the outside, when the power is lower than the first power threshold, it indicates that the power of the power battery pack 13 is low, the clutch controller 124 controls the input end of the clutch 121 to be connected with the output end of the engine 11, so as to use the output power of the engine 11 as the auxiliary power of the system, and simultaneously drive the motor generator 141 to generate power to charge the power battery pack 13. When the electric quantity of the power battery pack 13 is higher than the second electric quantity threshold value during the charging process, which indicates that the electric quantity of the power battery pack 13 is sufficient, the clutch controller 124 controls the input end of the clutch 121 to be disconnected from the output end of the engine 11, so as to supply power to the motor generator 141 through the power battery, and enable the motor generator 141 to output power. The first power threshold may be set to 10% to 30% of the total power, and the second power threshold may be set to 70% to 90% of the total power.
EXAMPLE five
The embodiment provides a hybrid system 1, which is further improved on the basis of the second embodiment.
As shown in fig. 1 and 7, a second motor controller 16 is provided in a line connecting the power battery pack 13 and the electric actuator 23, so that when the electric actuator 23 is a motor, the second motor controller 16 converts direct current power and alternating current power between the power battery pack 13 and the electric actuator 23. At the same time, the second motor controller 16 can also control the rotational speed or torque of the electric motor to enable the electric actuator 23 to meet the operational requirements.
EXAMPLE six
The embodiment provides a hybrid system 1, which is further improved on the basis of the second embodiment.
As shown in fig. 1 and 8, the power battery pack 13 includes a power battery 131 and a battery management system unit 132. The battery management system unit 132 is electrically connected to the power battery 131 to monitor and control the power battery 131. The battery management system unit 132 is electrically connected to the motor generator 141 and the electric actuator 23, respectively, to control the charging and discharging processes of the power battery 131, and monitor the operating state of the power battery 131, so as to protect the power battery 131, which is beneficial to prolonging the service life of the power battery 131.
Furthermore, an external charging interface is arranged on the power battery 131, the power battery 131 can be connected to external charging equipment for charging when the engineering machinery is in a non-working state, the service life of the engine 11 is shortened, the energy consumption of the engine 11 is further reduced, and the effects of saving energy, reducing emission and reducing noise and air pollution are achieved.
EXAMPLE seven
The embodiment provides a hybrid power system 1 for an engineering machine. As shown in fig. 1, 9, and 10, the hybrid system 1 includes an engine 11, a transmission assembly 12, a power battery pack 13, a motor-generator set 14, a hydraulic pump 15, and a second motor controller 16.
The power battery pack 13 is used as a main energy device of the hybrid power system 1, and the engine 11 is used as an auxiliary energy device. The engine 11 and the transmission assembly 12 can be connected or disconnected, and when the engine 11 and the transmission assembly 12 are disconnected, electric energy is provided through the power battery pack 13; when the engine 11 is connected to the transmission assembly 12, power is output by the engine 11.
The motor generator set 14 includes a motor generator 141 and a first motor controller 142. The motor generator 141 integrates functions of a generator and a motor, and generates power to the outside when power is input to the motor generator 141 and outputs power to the outside when power is input to the motor generator 141. The first motor controller 142 is electrically connected to the motor generator 141 and the power battery pack 13 to realize the conversion of the alternating current and the direct current between the motor generator 141 and the power battery pack 13 and control the operating state of the motor generator. The motor generator 141 and the hydraulic pump 15 are both connected to the transmission assembly 12, and the hydraulic pump 15 is used for driving the hydraulic system 22 of the construction machine. The power battery packs 13 are respectively electrically connected with the electric actuators 23 of the construction machine so as to supply power to the electric actuators 23; the power battery pack 13 is electrically connected to the motor generator 141 through the first motor controller 142 to supply power to the motor generator 141 or to take electric power through the motor generator 141. When the engine 11 outputs power to the motor generator 141 through the transmission assembly 12, the first motor controller 142 may control the motor generator 141 to generate or not generate power according to the actual demand of the power battery pack 13, so as to generate power through the motor generator 141 and charge the power battery pack 13 when the power battery pack 13 has a charging demand, and at the same time, control the generated power of the motor generator 141 to supplement the electric power of the power battery pack 13, and control the motor generator 141 to idle and not generate power when the power battery pack 13 does not need to be charged. When the power battery drives the motor generator 141 to output power, the first motor controller 142 can control the output rotation speed of the motor generator 141 to meet the use requirements of the transmission assembly 12 and the hydraulic pump 15.
The power battery pack 13 includes a power battery 131 and a battery management system unit 132. The battery management system unit 132 is electrically connected to the power battery 131 to monitor and control the power battery 131. The battery management system unit 132 is electrically connected to the motor generator 141 and the electric actuator 23, respectively, to control the charging and discharging processes of the power battery 131, and monitor the operating state of the power battery 131, so as to protect the power battery 131, which is beneficial to prolonging the service life of the power battery 131. The power battery 131 is provided with an external charging interface, and the power battery 131 can be connected to external charging equipment for charging when the engineering machinery is in a non-working state, so that the service life of the engine 11 is shortened, the energy consumption of the engine 11 is further reduced, and the effects of saving energy, reducing emission, and reducing noise and air pollution are achieved.
The second motor controller 16 is disposed in a line connecting the power battery pack 13 and the electric actuator 23, so that when the electric actuator 23 is a motor, the second motor controller 16 converts direct current power and alternating current power between the power battery pack 13 and the electric actuator 23. At the same time, the second motor controller 16 can also control the rotational speed or torque of the electric motor to enable the electric actuator 23 to meet the operational requirements.
In one implementation of the present embodiment, as shown in fig. 9, the transmission assembly 12 includes a clutch 121, a transmission shaft 122, and a clutch controller 124. The output of the clutch 121 is connected to the drive shaft 122, and the input of the clutch 121 is connectable to or disconnectable from the output of the engine 11. The motor generator 141 and the hydraulic pump 15 are both in transmission connection with the transmission shaft 122, specifically, when power is supplied by the power battery 131, the input end of the clutch 121 is disconnected from the output end of the engine 11, and at this time, the motor generator 141 outputs power under the action of the electric energy supplied by the power battery 131 and drives the hydraulic pump 15 to operate through the transmission shaft 122; when the power battery 131 needs to be charged, the input end of the clutch 121 is connected to the output end of the engine 11, and at this time, the motor generator 141 generates power under the driving of the engine 11 to charge the power battery 131 through the battery management system unit 132, and the first motor controller 142 controls the power generated by the motor generator 141, and at the same time, the output power of the engine 11 is transmitted to the hydraulic pump 15 through the transmission shaft 122, so that the hydraulic pump 15 drives the hydraulic system 22 of the construction machine to operate. The motor generator 141 and the hydraulic pump 15 are both connected to the transmission shaft 122, so that intermediate transmission links are reduced, and the transmission efficiency is relatively high. In addition, when the engine 11 outputs power, the first motor controller 142 may control the motor generator 141 to idle and not generate power if the power battery 131 has no demand for charging.
In another implementation of the present embodiment, as shown in FIG. 10, the transmission assembly 12 includes a clutch 121, a transfer case 123, and a clutch controller 124. The output of the clutch 121 is connected to the input of the transfer case 123, and the input of the clutch 121 is connectable to or disconnectable from the output of the engine 11. The motor generator 141 is drivingly connected to one output of the transfer case 123, and the hydraulic pump 15 is drivingly connected to the other output of the transfer case 123. Specifically, when the power battery 131 supplies power to the outside, the input end of the clutch 121 is disconnected from the output end of the engine 11, the motor generator 141 outputs power under the electric energy of the power battery 131, and reversely drives the transfer case 123 to operate, and further drives the hydraulic pump 15 to operate through the transfer case 123, so as to drive the hydraulic system 22 of the engineering machinery to work; when the power battery 131 needs to be charged, the input end of the clutch 121 is connected to the output end of the engine 11, the output power of the engine 11 is distributed to the hydraulic pump 15 and the motor generator 141 through the transfer case 123, the motor generator 141 generates power under the driving of the engine 11 and charges the power battery 131 through the battery management system unit 132, the first motor controller 142 controls the power generated by the motor generator 141, and the hydraulic pump 15 is operated under the driving of the engine 11 to further drive the hydraulic system 22 of the construction machine to operate. The transfer case 123 can distribute corresponding power according to respective power requirements of the motor generator 141 and the hydraulic pump 15, so that the motor generator 141 and the hydraulic pump 15 can respectively obtain different input rotating speeds, and adaptability is stronger. In addition, when the engine 11 outputs power, the first motor controller 142 may control the motor generator 141 to idle and not generate power if the power battery 131 has no demand for charging.
The clutch controller 124 is electrically connected with the battery management system unit 132 and the clutch 121, the clutch controller 124 obtains the power information of the power battery 131 through the battery management system unit 132, and controls the clutch 121 to operate according to the power of the power battery 131, so as to control the input end of the clutch 121 to be disconnected from the output end of the engine 11 when the power of the power battery 131 is sufficient, and control the input end of the clutch 121 to be connected with the output end of the engine 11 when the power of the power battery 131 is low.
For example, the power battery 131 presets a first power threshold and a second power threshold, and the first power threshold is smaller than the second power threshold. When the power battery 131 supplies power to the outside, when the power is lower than the first power threshold, it indicates that the power of the power battery 131 is low, and the clutch controller 124 controls the input end of the clutch 121 to be connected with the output end of the engine 11, so as to use the output power of the engine 11 as the auxiliary power of the system, and at the same time, drive the motor generator 141 to generate power to charge the power battery 131. When the power battery 131 is charged and the electric quantity is higher than the second electric quantity threshold value during the charging process, which indicates that the electric quantity of the power battery 131 is sufficient, the clutch controller 124 controls the input end of the clutch 121 to be disconnected from the output end of the engine 11, so as to supply power to the motor generator 141 through the power battery 131, and enable the motor generator 141 to output power. The first power threshold may be set to 10% to 30% of the total power, and the second power threshold may be set to 70% to 90% of the total power.
In the hybrid power system 1 in this embodiment, the power battery pack 13 is used as a main energy device to drive the hydraulic system 22 of the engineering machine and supply power to the electrical actuator 23, so that energy consumption of the engine 11 can be effectively reduced, energy saving and emission reduction are facilitated, noise and air pollution are reduced, integration of power generation equipment and electric drive equipment is achieved, the system is simplified, and cost reduction is facilitated.
Example eight
In the present embodiment, a working machine 2 is provided, and as shown in fig. 11, the working machine 2 includes a vehicle body 21, a hydraulic system 22, an electric actuator 23, and the hybrid system 1 in any one of the above embodiments.
The hydraulic system 22 and the electric actuators 23 are used to perform various work operations of the work machine 2. The power battery pack 13 in the hybrid system 1 is electrically connected with the electric actuator 23 to supply power to the electric actuator 23; the power battery pack 13 supplies power to the motor generator 141, so that the motor generator 141 outputs power, and the transmission unit 12 outputs power to the hydraulic pump 15, thereby driving the hydraulic system 22 to operate. When the power battery pack 13 has a low capacity or in a special situation, the engine 11 of the hybrid system 1 is connected to the transmission assembly 12 to output power to the hydraulic pump 15 through the engine 11, drive the hydraulic system 22 to operate, and drive the motor generator 141 to generate power to charge the power battery pack 13.
Further, the hydraulic system 22 includes at least one of a traveling system, a steering system, a braking system, and a lifting system; the electric actuator 23 includes at least one of an electric motor and an electric cylinder, and both can be driven by the hybrid system 1 in the present embodiment to realize different work functions.
In addition, the construction machine 2 in this embodiment has all the advantages of the hybrid power system 1 in any one of the embodiments, and details are not described herein.
The technical scheme of the embodiments of the invention is described in detail with reference to the accompanying drawings, and the power battery pack is used as a main energy device to drive the hydraulic system of the engineering machinery and supply power to the electric actuating element, so that the energy consumption of the engine can be effectively reduced, the energy conservation and emission reduction are facilitated, the noise and the air pollution are reduced, meanwhile, the integration of the power generation equipment and the electric drive equipment is realized, the system is simplified, and the cost is facilitated to be reduced.
In embodiments according to the present invention, the terms "first", "second", "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance; the term "plurality" means two or more unless expressly limited otherwise. The terms "mounted," "connected," "fixed," and the like are to be construed broadly, and for example, "connected" may be a fixed connection, a removable connection, or an integral connection; "coupled" may be direct or indirect through an intermediary. Specific meanings of the above terms in the embodiments according to the present invention can be understood by those of ordinary skill in the art according to specific situations.
In the description of the embodiments according to the present invention, it should be understood that the terms "upper", "lower", "left", "right", "front", "rear", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of describing the embodiments according to the present invention and simplifying the description, but do not indicate or imply that the referred devices or units must have a specific direction, be configured and operated in a specific orientation, and thus, should not be construed as limiting the technical aspects of the present application.
In the description herein, the description of the terms "one embodiment," "some embodiments," "specific embodiments," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example in accordance with the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The above is only a preferred embodiment according to the present invention, and is not intended to limit the technical solution of the present application, and it is obvious to those skilled in the art that various modifications and changes can be made to the technical solution of the present application. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the technical scheme of the application shall be included in the protection scope of the application.

Claims (10)

1. A hybrid power system (1) for a work machine (2), characterized by comprising:
an engine (11);
a transmission assembly (12), the transmission assembly (12) being connectable to or disconnectable from the engine (11);
the power battery pack (13) is electrically connected with an electric actuator (23) of the construction machine (2) to supply power to the electric actuator (23);
the motor generator set (14) is in transmission connection with the output end of the transmission assembly (12), and the motor generator set (14) is electrically connected with the power battery pack (13);
the hydraulic pump (15) is in transmission connection with the transmission assembly (12) and is used for driving a hydraulic system (22) of the engineering machinery (2);
wherein, engine (11) can pass through transmission assembly (12) to motor-generator set (14) and hydraulic pump (15) output power, make motor-generator set (14) to power battery group (13) charge, when engine (11) with transmission assembly (12) disconnection, power battery group (13) to motor-generator set (14) power supply, so that motor-generator set (14) to hydraulic pump (15) output power.
2. Hybrid powertrain system (1) according to claim 1, characterized in that said electric motor-generator set (14) comprises:
the motor generator (141) is in transmission connection with the output end of the transmission assembly (12);
a first motor controller (142), wherein one end of the first motor controller (142) is electrically connected with the motor generator (141), the other end of the first motor controller (142) is electrically connected with the power battery pack (13), and the first motor controller (142) is used for converting direct current and alternating current between the motor generator (141) and the power battery pack (13) and controlling the working state of the motor generator (141);
wherein the first motor controller (142) is capable of controlling whether the motor generator (141) generates power when the engine (11) outputs power through the transmission assembly (12), and the first motor controller (142) controls the generated power of the motor generator (141) when the motor generator (141) generates power, and the first motor controller (142) controls the output rotation speed of the motor generator (141) when the motor generator (141) outputs power.
3. Hybrid powertrain system (1) according to claim 2, characterized in that the transmission assembly (12) comprises:
a clutch (121), an input of the clutch (121) being connectable to or disconnectable from an output of the engine (11);
and the transmission shaft (122) is connected with the output end of the clutch (121), and the transmission shaft (122) is simultaneously in transmission connection with the motor generator (141) and the hydraulic pump (15).
4. Hybrid powertrain system (1) according to claim 2, characterized in that the transmission assembly (12) comprises:
a clutch (121), an input of the clutch (121) being connectable to or disconnectable from an output of the engine (11);
the input end of the transfer case (123) is connected with the output end of the clutch (121), and the two output ends of the transfer case (123) are in transmission connection with the motor generator (141) and the hydraulic pump (15) respectively.
5. Hybrid powertrain system (1) according to claim 3 or 4, characterized in that the transmission assembly (12) further comprises:
and the clutch controller (124) is electrically connected with the clutch (121) and the power battery pack (13), and the clutch controller (124) controls the input end of the clutch (121) to be connected or disconnected with the output end of the engine (11) according to the electric quantity of the power battery pack (13).
6. The hybrid system (1) according to claim 2, characterized by further comprising:
and the second motor controller (16) is arranged in a circuit connecting the power battery pack (13) and the electric actuator (23) and is used for converting direct current and alternating current between the power battery pack (13) and the electric actuator (23) and controlling the output rotating speed or torque of the electric actuator (23).
7. Hybrid system (1) according to claim 2, characterized in that said power battery (13) comprises:
a power battery (131);
a battery management system unit (132) electrically connected to the power battery (131);
wherein the power battery (131) is electrically connected with the motor generator (141) and the electric actuator (23) through the battery management system unit (132).
8. Hybrid system (1) according to claim 7,
the power battery (131) is provided with an external charging interface.
9. A working machine (2), characterized by comprising:
a vehicle body (21);
a hydraulic system (22) provided on the vehicle body (21);
an electric actuator (23) provided on the vehicle body (21);
the hybrid system (1) according to any one of claims 1 to 8, wherein the hybrid system is used for driving the hydraulic system (22) to work and supplying power to the electric actuator (23).
10. A working machine (2) according to claim 9,
the hydraulic system (22) comprises at least one of a driving system, a steering system, a braking system and a lifting system; and/or
The electric actuator (23) comprises at least one of an electric motor and an electric cylinder.
CN202011277223.4A 2020-11-16 2020-11-16 Hybrid power system and engineering machinery Pending CN112248792A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
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Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202011277223.4A CN112248792A (en) 2020-11-16 2020-11-16 Hybrid power system and engineering machinery

Publications (1)

Publication Number Publication Date
CN112248792A true CN112248792A (en) 2021-01-22

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Family Applications (1)

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CN202011277223.4A Pending CN112248792A (en) 2020-11-16 2020-11-16 Hybrid power system and engineering machinery

Country Status (1)

Country Link
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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113147720A (en) * 2021-05-08 2021-07-23 湖南三一路面机械有限公司 Hybrid power apparatus, hybrid power system, and control method of hybrid power system
CN113251011A (en) * 2021-05-14 2021-08-13 三一汽车起重机械有限公司 Drive system and control method for working machine, and working machine

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113147720A (en) * 2021-05-08 2021-07-23 湖南三一路面机械有限公司 Hybrid power apparatus, hybrid power system, and control method of hybrid power system
CN113147720B (en) * 2021-05-08 2022-08-26 湖南三一路面机械有限公司 Hybrid power apparatus, hybrid power system, and control method of hybrid power system
CN113251011A (en) * 2021-05-14 2021-08-13 三一汽车起重机械有限公司 Drive system and control method for working machine, and working machine

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