WO2022015086A1 - 건설기계용 하이브리드 전력분배시스템 - Google Patents
건설기계용 하이브리드 전력분배시스템 Download PDFInfo
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- WO2022015086A1 WO2022015086A1 PCT/KR2021/009133 KR2021009133W WO2022015086A1 WO 2022015086 A1 WO2022015086 A1 WO 2022015086A1 KR 2021009133 W KR2021009133 W KR 2021009133W WO 2022015086 A1 WO2022015086 A1 WO 2022015086A1
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- unit
- power distribution
- initial charging
- power
- inverter
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02F—DREDGING; SOIL-SHIFTING
- E02F9/00—Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
- E02F9/20—Drives; Control devices
- E02F9/2058—Electric or electro-mechanical or mechanical control devices of vehicle sub-units
- E02F9/2062—Control of propulsion units
- E02F9/2075—Control of propulsion units of the hybrid type
-
- 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
- B60W20/00—Control systems specially adapted for hybrid vehicles
- B60W20/10—Controlling the power contribution of each of the prime movers to meet required power demand
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02F—DREDGING; SOIL-SHIFTING
- E02F9/00—Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
- E02F9/20—Drives; Control devices
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02F—DREDGING; SOIL-SHIFTING
- E02F9/00—Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
- E02F9/20—Drives; Control devices
- E02F9/2058—Electric or electro-mechanical or mechanical control devices of vehicle sub-units
- E02F9/2091—Control of energy storage means for electrical energy, e.g. battery or capacitors
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H57/00—General details of gearing
- F16H57/02—Gearboxes; Mounting gearing therein
-
- 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
- B60W2300/00—Indexing codes relating to the type of vehicle
- B60W2300/17—Construction vehicles, e.g. graders, excavators
-
- 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
- B60W2510/00—Input parameters relating to a particular sub-units
- B60W2510/24—Energy storage means
- B60W2510/242—Energy storage means for electrical energy
- B60W2510/244—Charge state
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60Y—INDEXING SCHEME RELATING TO ASPECTS CROSS-CUTTING VEHICLE TECHNOLOGY
- B60Y2200/00—Type of vehicle
- B60Y2200/40—Special vehicles
- B60Y2200/41—Construction vehicles, e.g. graders, excavators
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60Y—INDEXING SCHEME RELATING TO ASPECTS CROSS-CUTTING VEHICLE TECHNOLOGY
- B60Y2200/00—Type of vehicle
- B60Y2200/90—Vehicles comprising electric prime movers
- B60Y2200/92—Hybrid vehicles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60Y—INDEXING SCHEME RELATING TO ASPECTS CROSS-CUTTING VEHICLE TECHNOLOGY
- B60Y2400/00—Special features of vehicle units
- B60Y2400/30—Sensors
- B60Y2400/308—Electric sensors
- B60Y2400/3084—Electric currents sensors
-
- 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
Definitions
- the present invention relates to a hybrid power distribution system for construction machines such as a hybrid wheel loader, and more particularly, to a hybrid power distribution system for construction machines including a power distribution device.
- Construction machinery is equipped with a diesel engine with high output power as a power source, drives a hydraulic pump connected to the engine using the power of the engine, and supplies hydraulic oil discharged from the hydraulic pump to a hydraulic actuator such as a hydraulic motor or hydraulic cylinder By doing so, the required power is supplied to the crawler for the traveling part or the rotation of the tire or the work device such as the boom, arm, or bucket to perform the required work.
- a hydraulic actuator such as a hydraulic motor or hydraulic cylinder
- diesel is a fossil fuel, so it is gradually depleted.
- fuel consumption is high, and fuel efficiency and operating costs are increased.
- an electric power system having a motor and an electric storage device is additionally installed in a general excavator or wheel loader using an engine as a power source, and the power of the engine is converted into electric power through a generator, and then the electric motor
- the driving part and the working part it is possible to improve the overall efficiency of the construction machine system.
- Hybrid wheel loader one of hybrid construction machines, requires a number of actuators compared to other construction machines, such as an actuator for the power generation unit for power generation/storage, an actuator for the working unit for power consumption/regeneration, and an actuator for the driving unit. Therefore, it is required to distribute power stably.
- An embodiment of the present invention aims to provide a hybrid power distribution system for construction machines that includes a power distribution device equipped with an initial charging unit, achieves miniaturization, and can distribute power more conveniently and stably.
- a hybrid power distribution system for a construction machine includes: an inverter for a power generation unit that receives three-phase AC power from a generator for a power generation unit of a driver for a power generation unit operated by an engine and outputs a DC current; a power distribution device connected to the inverter for the power generation unit, connected to the driving unit and the working unit of the construction machine, receiving the DC current, and distributing power to the driving unit and the working unit; and a control unit that calculates the required load amounts of the traveling unit and the work unit, and controls the generator for the power generation unit through the inverter for the power generation unit based on the required load amounts of the traveling unit and the work unit, wherein the power distribution device includes the driving unit It includes an initial charging unit for the driving unit electrically connected to the unit.
- the driving unit includes a plurality of driving units electrically connected to the initial charging unit for the driving unit, and each of the plurality of driving units includes an inverter for the driving unit and a motor for the driving unit.
- each of the plurality of inverters for the driving unit includes a DC link capacitor, and the plurality of DC link capacitors have the same capacitance value.
- the number of initial charging units for the traveling unit is smaller than the number of inverters for the traveling unit.
- the initial charging unit for the driving unit the initial charging resistor electrically connected to the inverter for the power generation unit; at least one first relay connected in parallel to the initial charging resistor; and a second relay disposed between the initial charging resistor and the driving part driver.
- the first relay in the initial operation of the driving part driver, the first relay is controlled in an open state, the second relay is controlled in a connected state, and in normal operation, the first relay is in a connected state controlled, and the second relay is controlled to an open state.
- the hybrid power distribution system for a construction machine further includes an initial charging unit for the power generation unit disposed between the inverter for the power generation unit and the power distribution device.
- the hybrid power distribution system for construction equipment includes: a current sensor disposed between the inverter for the power generation unit and the initial charging unit for the power generation unit, and measuring a current value output from the inverter for the power generation unit; and a battery sensor configured to measure a battery remaining charge amount of a battery connected to the power distribution device, wherein the controller controls power distribution of the power distribution device based on the current value and the battery remaining charge amount.
- a hybrid power distribution system for a construction machine includes: an inverter for a power generation unit that receives three-phase AC power from a generator for a power generation unit of a driver for a power generation unit operated by an engine and outputs a DC current; a power distribution device connected to the inverter for the power generation unit, connected to the driving unit and the working unit of the construction machine, receiving the DC current, and distributing power to the driving unit and the working unit; and a control unit configured to calculate the required load amount of the traveling unit and the work unit, and control the generator for the power generation unit through the inverter for the power generation unit based on the required load amount of the traveling unit and the work unit, wherein the power distribution device includes the work It includes an initial charging unit for the working unit that is electrically connected to the unit.
- the work unit includes a plurality of actuators for the work unit electrically connected to the initial charging unit for the work unit, and each of the plurality of actuators for the work unit includes an inverter for the work unit and a motor for the work unit.
- each of the plurality of inverters for the work unit includes a DC link capacitor, and the plurality of DC link capacitors have the same capacitance value.
- the number of the initial charging unit for the work unit is smaller than the number of inverters for the work unit.
- the initial charging unit for the work unit the initial charging resistor electrically connected to the inverter for the power generation unit; at least one first relay connected in parallel to the initial charging resistor; and a second relay disposed between the initial charging resistor and the driver for the work unit.
- the first relay is controlled in an open state
- the second relay is controlled in a connected state
- in normal operation the first relay is in a connected state controlled
- the second relay is controlled to an open state
- the hybrid power distribution system for a construction machine further includes an initial charging unit for the power generation unit disposed between the inverter for the power generation unit and the power distribution device.
- the hybrid power distribution system for construction equipment includes: a current sensor disposed between the inverter for the power generation unit and the initial charging unit for the power generation unit, and measuring a current value output from the inverter for the power generation unit; and a battery sensor configured to measure a battery remaining charge amount of a battery connected to the power distribution device, wherein the controller controls power distribution of the power distribution device based on the current value and the battery remaining charge amount.
- a hybrid power distribution system for a construction machine includes: an inverter for a power generation unit that receives three-phase AC power from a generator for a power generation unit of a driver for a power generation unit operated by an engine and outputs a DC current; a power distribution device connected to the inverter for the power generation unit, connected to the driving unit and the working unit of the construction machine, receiving the DC current, and distributing power to the driving unit and the working unit; and a control unit that calculates the required load amounts of the traveling unit and the work unit, and controls the generator for the power generation unit through the inverter for the power generation unit based on the required load amounts of the traveling unit and the work unit, wherein the power distribution device includes the driving unit It includes an initial charging unit for the traveling unit electrically connected to the unit and an initial charging unit for the working unit electrically connected to the working unit, wherein the traveling unit includes a plurality of driving units electrically connected to the initial charging unit for the traveling unit,
- the work unit includes a plurality of actuators
- the working unit includes two actuators for the working unit
- the driving unit includes six actuators for the driving unit
- each of the six driving units is connected to a speed reducer, and a 2in1 gear box.
- Two actuators for the traveling part can be connected to one reducer.
- a hybrid power distribution system for a construction machine includes a power distribution device equipped with an initial charging unit for a driving unit or an initial charging unit for a working unit, and achieves miniaturization, and can distribute power more conveniently and stably There is an advantage to being there.
- FIG. 1 is a schematic diagram of a hybrid power distribution system for a construction machine according to an embodiment of the present invention.
- FIG. 2 is a diagram illustrating an apparatus for measuring power generation according to an embodiment of the present invention.
- FIG. 3 is a diagram illustrating a connection state of a power sensor according to an embodiment of the present invention.
- FIG. 4 is a diagram illustrating a connection state of a switching element inside a three-phase inverter according to an embodiment of the present invention.
- FIG. 5 is a diagram illustrating a hybrid electric power system of a construction machine vehicle including a power distribution system according to an embodiment of the present invention.
- FIG. 6 is a diagram illustrating the hybrid power distribution system of FIG. 5 .
- FIG. 7 is a diagram illustrating an internal configuration of the hybrid power distribution system of FIG. 6 .
- first, second, etc. used in the present invention may be used to describe various components, but the components should not be limited by the terms. The above terms are used only for the purpose of distinguishing one component from another. For example, without departing from the scope of the present invention, a first component may be referred to as a second component, and similarly, a second component may also be referred to as a first component.
- FIG. 1 is a schematic diagram of a hybrid power distribution system for a construction machine according to an embodiment of the present invention
- FIG. 2 is a diagram illustrating a generation power measuring device according to an embodiment of the present invention
- FIG. 3 is a diagram of the present invention It is a diagram illustrating a connection state of a power sensor according to an embodiment.
- the hybrid power distribution system for construction machinery includes an engine 10, a generator 110 for a power generation unit, an inverter 120 for a power generation unit, a current sensor 130, It may include a control unit 140 , a power distribution device 150 , a battery 160 , a battery sensor 170 , a driving unit 20 , and a work unit 21 .
- the generator 110 for the power generation unit is driven at the same speed as the engine RPM to produce three-phase AC power.
- the inverter 120 for the power generation unit is connected to the generator 110 for the power generation unit, receives the three-phase AC power produced by the generator 110 for the power generation unit, and outputs direct current.
- the inverter 120 for the power generation unit controls the RPM of the engine 10 and the torque of the generator 110 for the power generation unit according to the instruction of the control unit 140 .
- the inverter 120 for the power generation unit includes a plurality of switching elements and a DC link capacitor 125 .
- the DC link capacitor 125 accumulates voltages output from the switching elements of the inverter 120 for the power generation unit, and outputs a DC current.
- the current sensor 130 is disposed on one pole of the DC link of the DC link capacitor 125 of the inverter 120 for the power generation unit and the connection line of the power distribution device 150, the DC link terminal of the inverter 120 for the power generation unit. The current is measured and the measured value is transmitted to the controller 140 .
- the position of the current sensor 130 is located at the output terminal of the inverter 120 for the power generation unit, it is possible to measure the power in which the inverter efficiency is reflected.
- three-phase AC power generated from a generator generates reactive power by a phase difference. Accordingly, the generator supplies both active power and reactive power to the inverter 120 for the power generation unit. However, only active power is transmitted as the power transmitted to the power distribution device 150, and the reactive power remains in the generator and inverter systems. Therefore, by mounting the current sensor 130 to the DC link terminal of the inverter 120 for the power generation unit and measuring the voltage and current, it is possible to calculate the correct active power delivered to the electric power system.
- the control unit 140 is constituted by a central processing unit (CPU) and an arithmetic processing unit including an internal memory, and is executed by the CPU executing a drive control program stored in the internal memory.
- CPU central processing unit
- arithmetic processing unit including an internal memory
- the controller 140 controls the operation of the power distribution device 150 based on the current value measured by the current sensor 130 .
- the control unit 140 calculates the required load amounts of the traveling unit 20 and the work unit 21, and based on the required load amounts of the traveling unit 20 and the work unit 21, the inverter 120 for the power generation unit ) through the generator 110 for the power generation unit can be controlled.
- the driving unit 20 includes a plurality of traveling machines 200 and a plurality of driving units 201 for driving the plurality of traveling machines 200
- the working unit 21 includes a plurality of working machines 210 and It may include a plurality of actuators 211 for a plurality of work units for driving the plurality of work units (210).
- the driving unit 201 of the driving unit 20 includes a driving unit motor 2011 and an inverter 2012 for controlling the rotation speed of the traveling unit motor 2011, respectively, and of the working unit 21 .
- the actuator 211 for the working part includes a motor 2111 for the working part and an inverter 2112 for the working part for controlling the rotation speed of the motor 2111 for the working part, respectively.
- the driving machine 200 includes components for driving the construction machine, and may include, for example, a reducer, an accelerator, a gear, a brake, and the like.
- the work machine 210 includes components for the work of a construction machine, and may include, for example, a bucket, an arm, a boom, and the like. The relationship between the power distribution device 15 and the driving unit 20 and the work unit 21 will be described in detail with reference to FIG. 5 to be described later.
- the driving unit 20 and the working unit 21 are driven by the power distributed by the power distribution device 150 in the embodiment of the present invention.
- the control unit 140 controls the traveling unit 20 and the working unit 21 based on the power consumed by the traveling machine 200 and the working machine 210 by the traveling machine sensor (not shown) and the working machine sensor (not shown). can calculate the required load.
- the controller 140 calculates the total power consumption measured value by summing the power consumption of each travel machine 200 and the work machine 210, or Power consumption for each of the driving unit 20 and the working unit 21 may be calculated.
- the controller 140 may receive a signal indicating an operation amount for operating the connected work machine and calculate a load amount corresponding to the operation amount.
- the power distribution device 150 distributes the current input from the inverter 120 and the battery 160 for the power generation unit to the connected driving unit 20 and the working unit 21 according to the instruction of the control unit 140 , etc. can do.
- the power distribution device 150 includes initial charging units (155-1, 155-2) and power distribution units (151, 152, 153, 154).
- the power distribution units 151 , 152 , 153 , 154 distribute the DC current (voltage) applied from the inverter 120 for the power generation unit to the driving unit 20 and the working unit 21 per panel, bus bar, cable, etc. It may include various configurations known in the art. However, the embodiment of the present invention is not limited thereto, and the power distribution device 150 may further include an additional functional unit and additional wiring. The power distribution device 150 will be described in more detail with reference to FIG. 5 to be described later.
- an initial charging unit 155 for the power generation unit may be disposed.
- the initial charging unit 155 is connected in series with the current sensor 130 and disposed between the current sensor 130 and the power distribution device 150 , and includes an initial charging resistor R and relays R1 and R2 . Therefore, the initial charging unit 155 serves as a switch (eg, serves as a cut-off switch) and serves to provide a bypass power line, for example, an initial inrush current generated in the DC link capacitor of the inverter 120 for a generator. can be suppressed
- the initial charging unit 155 for the power generation unit may be built in the power distribution device (150).
- the initial charging resistor (R) is connected in series with the current sensor 130, the first relay (R1) is connected in parallel to the initial charging resistor (R), the second relay (R2) is It may be connected in series with the initial charging resistor (R).
- the initial charging unit 155 of the present invention is not limited thereto, and the initial charging unit 155 includes a plurality of first relays R1 and/or the initial charging resistor R connected in parallel to the initial charging resistor R. ) and a set of the second relay R2 connected in series to the initial charging resistor R may include various well-known initial charging circuits, such as a circuit connected in parallel in plurality.
- the first relay (R1) In the initial operation of the inverter 120 for the power generation unit, the first relay (R1) is controlled to the open state and the second relay (R2) is controlled to the connected state, and the input current is transmitted through the initial charging resistor (R), In a normal operation, the first relay R1 is controlled to be in the connected state and the second relay R2 is controlled to be in the open state, and is transmitted through the first relay R1.
- the battery 160 serves to supply power to the starting motor and the ignition device when starting the construction machine. When the engine is stopped, it supplies the power required for the operation of the electrical equipment installed in the construction machine.
- the battery sensor 170 is electrically connected to the battery 160 and monitors any one or more of voltage, current, and/or temperature of the battery 160 to check the state of charge and the remaining charge amount (charge amount) of the battery 160 . make it possible
- the battery sensor 170 may be an Intelligent Battery Sensor (IBS).
- IBS Intelligent Battery Sensor
- the IBS basically includes sensors that sense the voltage, current, and internal temperature of the vehicle battery, respectively, and using the values sensed by each sensor, the remaining battery charge (SOC: State Of Charge) value and the battery life (SOH: State Of) value are used. Health) (or battery capacity deterioration state), battery internal temperature (BTM: Battery Of Model) value, battery start function (SOF: State Of Function) value, etc. can be calculated.
- SOC State Of Charge
- BTM Battery Of Model
- SOF State Of Function
- the battery sensor 170 transmits the monitored information to the control unit 140 .
- the control unit 140 receives the measurement values of the current sensor 130 and the battery sensor 170, and comprehensively determines the remaining battery charge (SOC) of the battery and the required load amount of the work machine to generate power of the generator. decide The controller 140 determines the RPM of the engine and the torque of the generator according to the determined power generation.
- SOC remaining battery charge
- the following is a table for explaining the generation power measurement efficiency to which the inverter efficiency according to an embodiment of the present invention is applied.
- Table 1 shows fuel efficiency according to the rotational speed of the engine.
- Table 2 shows the torque of the generator according to the rotational speed of the engine.
- Table 3 shows the inverter efficiency according to the rotational speed of the engine and the torque of the generator.
- the efficiency of the inverter is 95.79% to 97.9%, and the efficiency error is 2.11% in the operating region of the inverter, that is, in the region where the engine speed is 1250 or more and 1875 or less and the torque of the generator is 0 to 1528 or less.
- the engine is turned off and the driving range of the inverter is changed.
- the engine speed in the inverter region in the case of EV is 0 or more and 1250 or less, and the torque of the generator is 0 to 356 or less, and the efficiency of the inverter in this inverter region is 85.93% to 95.98%, and the efficiency error is 10.05%.
- the current sensor 130 is illustrated and described to be disposed outside the power distribution device 150, but the present invention is not limited thereto, and in the present invention, the current sensor 130 is the power distribution device 150 ) is arranged inside and it is possible to consist of one component.
- FIG. 4 is a diagram illustrating a connection state of a switching element inside a three-phase inverter according to an embodiment of the present invention.
- the switching element of the three-phase inverter 120 is an upper switching element S1 disposed between the input line for each of the three phases (U, V, W) and the first pole of the DC link capacitor 125, respectively.
- S2, S3) and the lower switching elements (S4, S5, S6) respectively disposed between the input line for each of the three phases (U, V, W) and the second pole of the DC link capacitor 125 may be included.
- the switching elements arranged in the same column are connected to the input line for the same phase, and the upper and lower switching elements for U phase are Sa, the upper and lower switching elements for V phase are Sb, and the upper and lower switching elements for the W phase are Sb.
- the switching element is denoted by Sc.
- the two switching elements in the same column that is, Sa, Sb, and Sc are alternately switched according to the phase of the input voltage to output a DC current.
- the inverter included in the generated power measuring device may use the same model as an inverter connected to a motor used in a working machine of a construction machine.
- the motor 2011 for the driving unit of the driving unit 20 may correspond to the generator 110 of FIG. 4
- an inverter 2012 for the driving unit of the driving unit 20 may correspond to the inverter 120 of FIG. 4
- the motor 2111 for the work unit of the work unit 21 may correspond to the generator 110 of FIG. 4
- the inverter 2112 for the work unit of the work unit 21 may correspond to the inverter 120 of FIG. 4 . have.
- the inverter 2012 for the driving unit and the inverter 2112 for the working unit receive the DC current (or voltage) distributed from the power distribution device, and convert it into an alternating current (or voltage) to the motor for the driving unit ( 2111) and the motor 2112 for the work unit, so that the traveling machine 200 and the work machine 210 are driven, respectively.
- the inverter 2012 for the driving part and the inverter 2112 for the working part may each include a DC link capacitor (see FIG. 7 ).
- the DC link capacitor of the inverter 2012 for the driving part and the inverter 2112 for the working part may correspond to the DC link capacitor 125 of FIG. 4 .
- FIG. 5 is a diagram illustrating a hybrid electric power system of a construction machine vehicle including a power distribution system according to an embodiment of the present invention
- FIG. 6 is a diagram illustrating the hybrid power distribution system of FIG. is a diagram illustrating an internal configuration of the hybrid power distribution system of FIG. 6 .
- 5 to 7 are the second half of the schematic diagram of the hybrid electric power system for construction machinery according to the embodiment of the present invention in FIG. The relationship is shown in more detail, and since the same reference numerals indicate the same components throughout FIGS. 1 to 5 , detailed descriptions of overlapping parts will be omitted.
- the generator 110 for the power generation unit, the inverter 120 for the power generation unit, the current sensor 130, the control unit 140, the battery 160, and the battery sensor 170 is omitted, and the power distribution device ( 150) and the driving unit 20, the connection relationship between the driving unit motor and the driving unit inverter connected between the power distribution device 150 and the driving unit 20, and the power distribution device 150 and the working unit 21 , a connection relationship between the inverter for the work unit and the motor for the work unit connected between the power distribution device 150 and the work unit 21 will be described in detail.
- the power distribution device 150 includes an initial charging unit 155-1 for the driving unit, an initial charging unit 155-2 for the working unit, a main power power distribution unit 151, a working unit power distribution unit 152, and a driving unit power distribution unit. 153 , and a power distribution unit 154 for grounding.
- the power distribution unit 151 for the main power of the power distribution device 150 has one terminal connected to the inverter 120 for the power generation unit and one terminal of the initial charging unit 155-1 for the driving unit and the initial charging unit for the working unit. It has other terminals respectively connected to one terminal of (155-2).
- the power distribution unit 152 for the work unit of the power distribution device 150 has one terminal connected to the other terminal of the initial charging unit 155-2 for the work unit and the other terminal connected to one terminal of the driver 211 for the work unit.
- the power distribution unit 153 for the driving unit of the power distribution device 150 has one terminal connected to the other terminal of the initial charging unit 155-1 for the driving unit and the other terminal connected to one terminal of the driving unit 201 for the driving unit.
- the grounding power distribution unit 154 of the power distribution device 150 is connected to the other terminal of the driving unit driver 201 and the other terminal of the working unit driving unit 211 .
- the work unit 21 includes two work units 210 and two work units actuators 211 for respectively driving the work units 210 , and each actuator 211 for the work unit is a motor for the work unit. (2111-1, 2111-2) and inverters for the work unit (2112-1, 2112-2) may be included. Accordingly, the power distribution unit 152 for the work unit of the power distribution device 150 is at one terminal connected to the initial charging unit 155-2 for the work unit and one terminal of the inverters 2112-1 and 2111-2 for the work unit, respectively. It has other terminals to be connected.
- the traveling unit 20 includes 6 traveling units (eg, reducers) 200 and 6 driving units 201 for driving the traveling unit 200, respectively, each traveling
- the bouillon driver 201 may include motors for the driving unit (2011-1 to 2011-6) and inverters for the driving unit (2012-1 to 2012-6).
- the power distribution unit 153 for the traveling unit of the power distribution device 150 is connected to one terminal connected to the initial charging unit 155-1 for the traveling unit and one terminal of the inverters 2012-1 to 2012-6 for the traveling unit, respectively. It has other terminals to be connected.
- the working unit 21 and the traveling unit 20 may include different numbers of the working machine 210 and the traveling machine 200, respectively, and a plurality of drivers It may be connected to one working machine or one traveling machine.
- the six driving units 200 may be arranged in four on the front wheel and two on the rear wheel for 4-axis driving.
- the six driving units 200 may each include a speed reducer, and in the case of some driving units 200 , the two driving units 201 may be connected to one driving unit 200 by a 2in1 gearbox. have.
- the power distribution device 150 accurately measures the active power among the generated current generated/stored by the driver 156 for the power generation unit, and based on the measured active power by the control unit 140, Power may be distributed by connecting the battery 160 and the driving device 200 and the working device 210 for power consumption/regeneration.
- the initial charging unit 155-1 for the traveling unit and the initial charging unit 155-2 for the working unit may have a structure substantially similar to the initial charging unit 155 for the power generation unit described in relation to FIG. 3 .
- the initial charging unit 155 - 1 for the driving unit may be electrically connected to the main power power distribution unit 151 and the driving unit power distribution unit 153 .
- the initial charging unit 155-1 for the driving unit includes an initial charging resistor (R) electrically connected to the power distribution unit 151 for the main power, and one or more first relays connected in parallel to the initial charging resistor (R) ( R1), and a second relay R2 connected between the initial charging resistor R and the power distribution unit 153 for the driving unit.
- the initial charging unit 155 - 2 for the work unit may be electrically connected to the main power power distribution unit 151 and the work unit power distribution unit 152 . More specifically, the initial charging unit 155-1 for the work unit is an initial charging resistor (R) electrically connected to the power distribution unit 151 for the main power, and one or more first relays connected in parallel to the initial charging resistor (R) ( R1), and a second relay R2 connected between the initial charging resistor R and the power distribution unit 152 for the work unit.
- R initial charging resistor
- the first relay R1 In the initial operation of the inverter 2012 for the driving part and the inverter 2112 for the working part, the first relay R1 is controlled in the open state and the second relay R2 is controlled in the connected state, and the input current is the initial charging resistance It is transmitted through R, and during normal operation, the first relay R1 is controlled to the connected state and the second relay R2 is controlled to the open state, and is transmitted through the first relay R1.
- the initial charging unit (155-1, 155-2) includes the initial charging resistor (R) and the relay (R1, R2), serves as a switch (eg, serves as a cut-off switch) and serves to provide a bypass power line
- a switch eg, serves as a cut-off switch
- each of the initial charging units 155, 155-1, and 155-2 may be installed in the power generation unit, the work unit, and the driving unit.
- the initial charging unit 155-1 for the traveling unit may be connected to a plurality of traveling units 200, for example, six traveling units 200 through the plurality of driving units 201, and may be an initial charging unit for the working unit.
- the charging unit 155 - 2 may be connected to the plurality of work units 210 , for example, the two work units 210 through the plurality of work unit actuators 211 .
- a plurality of inverters 2012 for driving units included in the plurality of driving units 201 are connected to one initial charging unit 155-1 for driving units, and a plurality of actuators 211 for working units included in the plurality of driving units are connected to each other.
- Inverter 2112 for the work unit may be connected to the initial charging unit 155-2 for one work unit.
- the power distribution device may include a plurality of initial charging units for a plurality of inverters, and in this case, the number of initial charging units may be smaller than the number of inverters.
- the initial charging unit 155-1 for the traveling unit may include a plurality of initial charging units 155-1 respectively connected to a plurality of different sets of driving units 201, and in this case, the initial charging unit for the traveling unit ( 155-1) may be smaller than the number of inverters 2012 for the driving unit.
- the initial charging unit 155-2 for the working unit may include a plurality of initial charging units 155-2 connected to a plurality of different sets of actuators 211 for the working unit, and in this case, the initial charging unit 155- for the working unit.
- the number of 2) may be smaller than the number of inverters 2112 for the work unit.
- the power distribution device 150 includes the initial charging unit 155-1 for the driving unit 20 and the initial charging unit 155-2 for the working unit 21 inside, so that from the outside Without separately considering whether the installed inverter 2012 for the driving unit and/or the inverter 2112 for the working unit requires an initial charging circuit, the driving unit 200, the working unit 210, and the driving unit inverter (2012) , the inverter 2112 for the work unit can be freely used.
- a common initial charging circuit for example, one initial charging unit 155-1, 155-2 for each of the driving unit 20 and the working unit 21
- power distribution It is possible to achieve miniaturization of the device.
- the initial charging unit 155 for the power generation unit, the initial charging unit 155-1 for the driving unit, and the initial charging unit 155-2 for the working unit may be used separately because the power generation form, noise, and load used are different from each other. have.
- the physical characteristics of the DC link capacitors of the inverters 2012 and 2112 for the driving part and the working part connected to the same among the initial charging units 155-1 and 155-2 for the driving part and the working part may be the same.
- all six DC link capacitors included in the six inverters 2012-1 to 2012-6 for the driving unit connected to the initial charging unit 155-1 for the driving unit may have the same capacitance value.
- the two DC link capacitors respectively included in the two inverters 2112-1 and 2112-2 for the work unit connected to the initial charging unit 155-2 for the work unit may have the same capacitance value. This is because the current distributed through the initial charging units 155 - 1 and 155 - 2 can be evenly distributed only when the DC link capacitors are the same.
- the initial charging of the DC link capacitor 125 may be designed as a value of the number of each inverter x the capacitance of one inverter.
- the initial charging time T precharge may be calculated by the following equation.
- T precharge -RC*ln(1-V o /V in)
- R may be a resistance of an initial charging resistor of the initial charging circuit
- C may be a capacitance of the inverter
- Vin may be an input voltage value of the initial charging circuit
- Vo may be an output voltage value (charging voltage value) of the initial charging circuit.
- the resistance value of the initial charging resistance of the initial charging circuit can be obtained by the above formula.
- the hybrid power distribution system for construction machinery accurately measures the active power among the generated current generated/stored by the generator for the power generation unit, and based on the measured active power, the battery and Power can be distributed by connecting the actuator for the working part and the actuator for the driving part for power consumption/regeneration.
- control unit 150 power distribution device
- initial charging unit 155-1 initial charging unit for driving unit
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- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
Description
| 데이터 기록 | |||||
| 연비 g/kWh |
198.6 | 196.6 | 195.8 | 198.0 | 197.2 |
| 198.5 | 196.7 | 194.9 | 194.1 | 195.3 | |
| 198.1 | 197.0 | 195.6 | 195.8 | 195.8 | |
| 196.7 | 197.4 | 197.5 | 195.4 | 198.1 | |
| 199.9 | 197.6 | 197.2 | 196.6 | 197.6 | |
| 200.1 | 202.0 | 198.3 | 197.6 | 199.7 | |
| 202.3 | 203.5 | 201.4 | 204.8 | 208.4 | |
| 209.6 | 210.7 | 210.7 | 212.7 | 214.5 | |
| 221.3 | 224.0 | 229.4 | 233.7 | 232.2 | |
| 273.0 | 272.9 | 275.5 | 281.0 | 293.9 | |
| 373.7 | 375.1 | 360.2 | 376.0 | 417.3 | |
| 속도 | 1300 | 1400 | 1500 | 1600 | 1700 |
| 데이터 기록 | |||||
| 토크 (Nm) |
1284.005 | 1278.898 | 1287.902 | 1264.197 | 1198.480 |
| 1151.211 | 1148.630 | 1162.077 | 1157.175 | 1084.144 | |
| 1019.128 | 1024.568 | 1018.561 | 1032.248 | 966.148 | |
| 897.551 | 897.865 | 902.984 | 897.647 | 837.192 | |
| 768.251 | 764.643 | 773.255 | 768.107 | 726.960 | |
| 641.841 | 644.172 | 646.470 | 648.078 | 607.046 | |
| 517.350 | 511.142 | 517.207 | 505.301 | 479.212 | |
| 384.887 | 388.592 | 385.744 | 378.904 | 357.766 | |
| 259.507 | 261.240 | 261.346 | 256.041 | 240.514 | |
| 129.976 | 134.777 | 133.314 | 131.469 | 124.977 | |
| 65.774 | 68.683 | 65.304 | 70.156 | 58.701 | |
| 속도(rpm) | 1300 | 1400 | 1500 | 1600 | 1700 |
| 토크 (Nm) |
데이터 기록 | |||||||||||
| 2450 | 83.85 | 84.85 | 91.73 | 94.32 | ||||||||
| 2178 | 84.39 | 85.39 | 91.97 | 94.38 | 95 | |||||||
| 2033 | 85.05 | 86.05 | 92.31 | 94.44 | 95.03 | |||||||
| 1866 | 85.69 | 86.69 | 92.64 | 94.48 | 95.04 | |||||||
| 1742 | 86.25 | 87.25 | 92.85 | 94.67 | 95.11 | 96.7 | ||||||
| 1528 | 86.94 | 87.94 | 93.19 | 94.89 | 95.29 | 96.7 | ||||||
| 1310 | 87.65 | 88.65 | 93.45 | 95.06 | 95.44 | 96.69 | 97.55 | |||||
| 1212 | 87.88 | 88.88 | 93.63 | 95.17 | 95.5 | 96.69 | 97.5 | |||||
| 1042 | 88.16 | 89.16 | 93.67 | 95.2 | 95.58 | 96.7 | 97.44 | 97.88 | ||||
| 969 | 88.41 | 89.41 | 93.73 | 95.27 | 95.54 | 96.72 | 97.41 | 97.83 | 97.9 | |||
| 882 | 88.5 | 89.5 | 93.79 | 95.27 | 95.58 | 96.71 | 97.39 | 97.79 | 97.85 | |||
| 871 | 88.55 | 89.55 | 93.81 | 95.29 | 95.61 | 96.71 | 97.39 | 97.76 | 97.8 | |||
| 831 | 88.56 | 89.56 | 93.8 | 95.28 | 95.59 | 96.68 | 97.38 | 97.77 | 97.79 | |||
| 755 | 88.39 | 89.39 | 93.74 | 95.19 | 95.58 | 96.65 | 97.33 | 97.75 | 97.8 | 97.9 | ||
| 740 | 88.44 | 89.44 | 93.74 | 95.2 | 95.57 | 96.63 | 97.31 | 97.77 | 97.79 | 97.88 | ||
| 693 | 88.41 | 89.41 | 93.7 | 95.16 | 95.49 | 96.6 | 97.3 | 97.7 | 97.8 | 97.38 | ||
| 635 | 88.38 | 89.38 | 93.66 | 95.1 | 95.47 | 96.59 | 97.28 | 97.74 | 97.78 | 97.83 | ||
| 555 | 88.26 | 89.26 | 93.58 | 95 | 95.42 | 96.53 | 97.23 | 97.7 | 97.76 | 97.79 | 97.8 | |
| 523 | 88.14 | 89.14 | 93.59 | 94.97 | 95.34 | 96.5 | 97.23 | 97.7 | 97.75 | 97.78 | 97.73 | |
| 505 | 88.13 | 89.13 | 93.54 | 94.93 | 95.33 | 96.45 | 97.2 | 97.71 | 97.74 | 97.76 | 97.65 | |
| 465 | 87.78 | 88.78 | 93.49 | 94.82 | 95.22 | 96.39 | 97.14 | 97.68 | 97.72 | 97.71 | 97.53 | |
| 396 | 87.57 | 88.57 | 93.24 | 94.8 | 95.07 | 96.27 | 97.03 | 97.59 | 97.69 | 97.63 | 97.49 | 97.45 |
| 356 | 87.36 | 88.36 | 93.08 | 94.71 | 95.09 | 96.19 | 96.94 | 97.52 | 97.63 | 97.58 | 97.35 | 97.3 |
| 305 | 86.93 | 87.93 | 92.82 | 94.48 | 94.84 | 95.98 | 96.79 | 97.44 | 97.55 | 97.51 | 97.3 | 97.14 |
| 0 | 85.93 | 86.93 | 91.82 | 93.48 | 93.84 | 94.98 | 95.79 | 96.44 | 96.55 | 96.51 | 96.3 | 96.14 |
| 속도 (rpm) |
0 | 313 | 531 | 697 | 747 | 994 | 1250 | 1563 | 1719 | 1875 | 2188 | 2500 |
Claims (18)
- 엔진에 의해 동작하는 발전부용 구동기의 발전부용 발전기로부터 3상의 교류전원을 입력받아 DC 전류를 출력하는 발전부용 인버터;상기 발전부용 인버터에 연결되고, 건설기계의 주행부 및 작업부에 연결되어, 상기 DC 전류를 인가받아서, 상기 주행부 및 상기 작업부에 전력을 분배하는 전력분배장치;상기 주행부 및 상기 작업부의 필요 부하량을 연산하고, 상기 주행부 및 상기 작업부의 필요 부하량에 기초하여 상기 발전부용 인버터를 통해 상기 발전부용 발전기를 제어하는 제어부를 포함하고,상기 전력분배장치는 상기 주행부와 전기적으로 연결되는 주행부용 초기충전부를 포함하는 건설기계용 하이브리드 전력분배시스템.
- 제1항에 있어서,상기 주행부는, 상기 주행부용 초기충전부에 전기적으로 연결되는 복수의 주행부용 구동기를 포함하고,상기 복수의 주행부용 구동기의 각각은 주행부용 인버터 및 주행부용 모터를 포함하는 건설기계용 하이브리드 전력분배시스템.
- 제2항에 있어서,상기 복수의 주행부용 인버터 각각은 DC 링크 커패시터를 포함하고, 상기 복수의 DC 링크 커패시터는 동일한 커패시턴스 값을 갖는 건설기계용 하이브리드 전력분배시스템.
- 제2항에 있어서, 상기 주행부용 초기충전부의 개수는 상기 주행부용 인버터의 개수보다 작은 건설기계용 하이브리드 전력분배시스템.
- 제2항에 있어서,상기 주행부용 초기충전부는,상기 발전부용 인버터에 전기적으로 연결되는 초기충전저항;상기 초기충전저항에 병렬 연결되는 하나 이상의 제1 릴레이; 및상기 초기충전저항과 상기 주행부용 구동기 사이에 배치되는 제2 릴레이를 포함하는 건설기계용 하이브리드 전력분배시스템.
- 제5항에 있어서,상기 주행부용 구동기의 초기 동작 시에, 상기 제1 릴레이는 개방상태로 제어되고, 상기 제2 릴레이는 접속상태로 제어되고,정상 동작 시에, 상기 제1 릴레이는 접속상태로 제어되고, 상기 제2 릴레이는 개방상태로 제어되는 건설기계용 하이브리드 전력분배시스템.
- 제1항에 있어서, 상기 발전부용 인버터와 상기 전력분배장치 사이에 배치되는 발전부용 초기충전부를 더 포함하는 건설기계용 하이브리드 전력분배시스템.
- 제7항에 있어서,상기 발전부용 인버터와 상기 발전부용 초기충전부 사이에 배치되어, 상기 발전부용 인버터로부터 출력되는 전류값을 측정하는 전류 센서; 및상기 전력분배장치와 연결된 배터리의 배터리 잔존 충전량을 측정하는 배터리 센서;를 더 포함하고,상기 제어부는 상기 전류값 및 상기 배터리 잔존 충전량에 기초하여 상기 전력분배장치의 전력분배를 제어하는 건설기계용 하이브리드 전력분배시스템.
- 엔진에 의해 동작하는 발전부용 구동기의 발전부용 발전기로부터 3상의 교류전원을 입력받아 DC 전류를 출력하는 발전부용 인버터;상기 발전부용 인버터에 연결되고, 건설기계의 주행부 및 작업부에 연결되어, 상기 DC 전류를 인가받아서, 상기 주행부 및 상기 작업부에 전력을 분배하는 전력분배장치;상기 주행부 및 상기 작업부의 필요 부하량을 연산하고, 상기 주행부 및 상기 작업부의 필요 부하량에 기초하여 상기 발전부용 인버터를 통해 상기 발전부용 발전기를 제어하는 제어부를 포함하고,상기 전력분배장치는 상기 작업부와 전기적으로 연결되는 작업부용 초기충전부를 포함하는 건설기계용 하이브리드 전력분배시스템.
- 제9항에 있어서,상기 작업부는, 상기 작업부용 초기충전부에 전기적으로 연결되는 복수의 작업부용 구동기를 포함하고,상기 복수의 작업부용 구동기의 각각은 작업부용 인버터 및 작업부용 모터를 포함하는 건설기계용 하이브리드 전력분배시스템.
- 제10항에 있어서,상기 복수의 작업부용 인버터 각각은 DC 링크 커패시터를 포함하고, 상기 복수의 DC 링크 커패시터는 동일한 커패시턴스 값을 갖는 건설기계용 하이브리드 전력분배시스템.
- 제10항에 있어서, 상기 작업부용 초기충전부의 개수는 상기 작업부용 인버터의 개수보다 작은 건설기계용 하이브리드 전력분배시스템.
- 제10항에 있어서,상기 작업부용 초기충전부는,상기 발전부용 인버터에 전기적으로 연결되는 초기충전저항;상기 초기충전저항에 병렬 연결되는 하나 이상의 제1 릴레이; 및상기 초기충전저항과 상기 작업부용 구동기 사이에 배치되는 제2 릴레이를 포함하는 건설기계용 하이브리드 전력분배시스템.
- 제13항에 있어서,상기 작업부용 구동기의 초기 동작 시에, 상기 제1 릴레이는 개방상태로 제어되고, 상기 제2 릴레이는 접속상태로 제어되고,정상 동작 시에, 상기 제1 릴레이는 접속상태로 제어되고, 상기 제2 릴레이는 개방상태로 제어되는 건설기계용 하이브리드 전력분배시스템.
- 제9항에 있어서, 상기 발전부용 인버터와 상기 전력분배장치 사이에 배치되는 발전부용 초기충전부를 더 포함하는 건설기계용 하이브리드 전력분배시스템.
- 제15항에 있어서,상기 발전부용 인버터와 상기 발전부용 초기충전부 사이에 배치되어, 상기 발전부용 인버터로부터 출력되는 전류값을 측정하는 전류 센서; 및상기 전력분배장치와 연결된 배터리의 배터리 잔존 충전량을 측정하는 배터리 센서;를 더 포함하고,상기 제어부는 상기 전류값 및 상기 배터리 잔존 충전량에 기초하여 상기 전력분배장치의 전력분배를 제어하는 건설기계용 하이브리드 전력분배시스템.
- 엔진에 의해 동작하는 발전부용 구동기의 발전부용 발전기로부터 3상의 교류전원을 입력받아 DC 전류를 출력하는 발전부용 인버터;상기 발전부용 인버터에 연결되고, 건설기계의 주행부 및 작업부에 연결되어, 상기 DC 전류를 인가받아서, 상기 주행부 및 상기 작업부에 전력을 분배하는 전력분배장치; 및상기 주행부 및 상기 작업부의 필요 부하량을 연산하고, 상기 주행부 및 상기 작업부의 필요 부하량에 기초하여 상기 발전부용 인버터를 통해 상기 발전부용 발전기를 제어하는 제어부를 포함하고,상기 전력분배장치는, 상기 주행부와 전기적으로 연결되는 주행부용 초기충전부 및 상기 작업부와 전기적으로 연결되는 작업부용 초기충전부를 포함하고,상기 주행부는, 상기 주행부용 초기충전부에 전기적으로 연결되는 복수의 주행부용 구동기를 포함하고,상기 작업부는, 상기 작업부용 초기충전부에 전기적으로 연결되는 복수의 작업부용 구동기를 포함하며,상기 전력분배장치는,상기 발전부용 인버터에 연결되는 일단자와, 상기 주행부용 초기충전부의 일단자와 상기 작업부용 초기충전부의 일단자에 각각 연결되는 타단자들을 갖는 주전원용 전력분배부;상기 주행부용 초기충전부의 타단자에 연결되는 일단자와, 상기 복수의 주행부용 구동기의 일단자들에 연결되는 타단자들을 갖는 주행부용 전력분배부;상기 작업부용 초기충전부의 타단자에 연결되는 일단자와, 상기 복수의 작업부용 구동기의 일단자들에 연결되는 타단자들을 갖는 작업부용 전력분배부; 및상기 복수의 주행부용 구동기의 타단자들 및 상기 복수의 작업부용 구동기의 타단자들에 연결되는 접지용 전력분배부를 더 포함하는 건설기계용 하이브리드 전력분배시스템.
- 17항에 있어서,상기 작업부는 2개의 작업부용 구동기를 포함하고, 상기 주행부는 6개의 주행부용 구동기를 포함하며,상기 6개의 주행부용 구동기는 각각 감속기와 연결되며, 2in1 기어 박스(2in1 gear box)에 의해 2개의 주행부용 구동기가 하나의 감속기에 연결될 수 있는 건설기계용 하이브리드 전력분배시스템.
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| WO2023177118A1 (ko) * | 2022-03-14 | 2023-09-21 | 현대두산인프라코어(주) | 건설기계 차량의 회생제동 전력 분배시스템 |
| KR20240113119A (ko) * | 2023-01-13 | 2024-07-22 | 두산밥캣코리아 주식회사 | 전동 지게차 및 그 배터리 충전 방법 |
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| JP2002325379A (ja) * | 2001-04-27 | 2002-11-08 | Kobe Steel Ltd | ハイブリッド建設機械の電力制御装置 |
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| KR20140034547A (ko) * | 2012-09-12 | 2014-03-20 | 현대중공업 주식회사 | 연비성능 향상을 위한 하이브리드 지게차 시스템 |
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| WO2023177118A1 (ko) * | 2022-03-14 | 2023-09-21 | 현대두산인프라코어(주) | 건설기계 차량의 회생제동 전력 분배시스템 |
| KR20240113119A (ko) * | 2023-01-13 | 2024-07-22 | 두산밥캣코리아 주식회사 | 전동 지게차 및 그 배터리 충전 방법 |
| KR102788669B1 (ko) * | 2023-01-13 | 2025-04-01 | 두산밥캣코리아 주식회사 | 전동 지게차 및 그 배터리 충전 방법 |
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| KR102763248B1 (ko) | 2025-02-05 |
| KR20230017231A (ko) | 2023-02-03 |
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