CN113619557B - Energy management system and control method for electrically driven paver - Google Patents

Energy management system and control method for electrically driven paver Download PDF

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Publication number
CN113619557B
CN113619557B CN202111012090.2A CN202111012090A CN113619557B CN 113619557 B CN113619557 B CN 113619557B CN 202111012090 A CN202111012090 A CN 202111012090A CN 113619557 B CN113619557 B CN 113619557B
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China
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power
electric equipment
energy
range extender
power battery
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CN113619557A (en
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张超
张明年
井然
刘瑞
吴淑莹
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Xuzhou XCMG Road Construction Machinery Co Ltd
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Xuzhou XCMG Road Construction Machinery Co Ltd
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    • 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
    • B60W20/13—Controlling the power contribution of each of the prime movers to meet required power demand in order to stay within battery power input or output limits; in order to prevent overcharging or battery depletion
    • 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
    • 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

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Automation & Control Theory (AREA)
  • Electric Propulsion And Braking For Vehicles (AREA)

Abstract

The invention discloses an energy management system and a control method of an electrically driven paver, comprising the following steps: the system comprises a power battery, a range extender, electric equipment, a direct current bus and an energy management unit; the power battery, the range extender and the electric equipment are all connected with the direct current bus, the energy management unit is respectively connected with the power battery, the range extender and the electric equipment, and the energy management unit adjusts the power of the range extender and is used for realizing energy distribution management among the power battery, the range extender and the electric equipment; the energy management unit adjusts the power of the electric equipment and is used for realizing energy distribution management between the power battery and the electric equipment. The invention realizes reasonable energy distribution among the range extender, the power battery and the electric equipment.

Description

Energy management system and control method for electrically driven paver
Technical Field
The invention discloses an energy management system and a control method of an electrically driven paver, and relates to the technical field of pavers.
Background
The paver is mainly used for paving construction of stabilized soil and asphalt concrete of roads, and is used for realizing paving of construction materials by conveying the construction materials to the front of a screed through a material conveying mechanism and then primarily compacting the construction materials through the screed and a vibrating mechanism.
To increasing form hybrid electric drive paver, its power supply has power battery and increases journey ware two parts and constitute, to many power system, need match well to increase the power between journey ware, power battery and the consumer, because the power matches unreasonablely, causes following problem:
1. the range extender power only works according to the allowable charging power of the power battery; when the equipment is in a working state, the power battery works in a discharging state for a long time, and the power battery cannot be charged to an ideal working state in the working process. And stopping charging when necessary.
2. The power of the range extender cannot be automatically adjusted along with the power of the electric equipment, and when the power of the electric equipment is high, the discharge current of the power battery of the vehicle exceeds the rated discharge current for a long time, so that the service life of the power battery is influenced.
3. The power of the range extender cannot be automatically adjusted along with the power of electricity, and when the electricity equipment performs feedback braking, the charging current of the power battery of the vehicle exceeds the allowable charging current, so that the service life of the power battery is influenced, and even the power battery of the vehicle is permanently damaged.
Disclosure of Invention
Aiming at the defects in the background technology, the invention provides an energy management system and a control method of an electrically-driven paver, and reasonable energy distribution among a range extender, a power battery and electric equipment is realized.
In order to achieve the purpose, the technical scheme adopted by the invention is as follows: an electrically driven paving function management system, comprising: the system comprises a power battery, a range extender, electric equipment, a direct current bus and an energy management unit; the power battery, the range extender and the electric equipment are all connected with the direct current bus, the energy management unit is respectively connected with the power battery, the range extender and the electric equipment,
the energy management unit regulates the power of the range extender and is used for realizing energy distribution management among the power battery, the range extender and the electric equipment;
the energy management unit adjusts the power of the electric equipment and is used for realizing energy distribution management between the power battery and the electric equipment.
Further, the power battery can be charged to store energy and can also be discharged to release energy, namely, the energy can flow from the power battery to the direct current bus and can also flow from the direct current bus to the power battery.
Further, the range extender includes: an engine and a generator in series therewith; starting an engine by electric work of the generator, and then enabling the generator to exit from an electric working mode and enter into a power generation mode; energy flows to the range extender from the direct current bus only when the engine is started, and other energy flows to the direct current bus from the range extender, so that the power battery is charged, or electric energy is provided for electric equipment.
Further, when the electric equipment works in an electric state, energy flows from the direct current bus to the electric equipment; when the electric equipment works in a power generation state, energy flows to the direct current bus from the electric equipment, and energy feedback braking is achieved.
A control method of an energy management system of an electrically driven paver, wherein the working mode of the management system comprises the following steps: the electric motor comprises a pure electric mode and a hybrid mode, and the working mode is switched by a mode switch.
Further, the concrete control method of the hybrid mode comprises the following modes:
(1) The power of the range extender is automatically adjusted along with the power consumption, and the system uses the power P 1C The power battery is charged for the first time,
the realization conditions are as follows: when P is 3 ＜P 2N - P 1c And P is 2 =P 1 +P 3 ，P 1 =P 1C ；
(2) Power P of range extender 2N Generating electricity, system with power P 1 The power battery is charged by the power battery,
the realization conditions are as follows: when P is 3 ≥P 2N - P 1c ，P 3 ＜P 2N And P is 2 = P 2N ，P 1 = P 2 - P 3 ；
(3) Power P of range extender 2N Power generation, power cell with P 1 The power is discharged and the discharge is carried out,
the realization conditions are as follows: when P is present 3 ≥P 2N When and P is 2 = P 2N ，P 1 = P 3 - P 2 ；
Wherein: p 2N For generating power allowed by the range extender, P 1c Allowable charging power for power battery, P 1 For power cell real-time power, P 2 For range extender real-time power, P 3 The power is real-time power of the electric equipment.
Further, the specific control method of the pure electric mode comprises the following modes:
(1) When energy flows to electric equipment from the power battery, the energy management unit ensures that the total power of all electric equipment of the system does not exceed the allowed discharge power by staggering power utilization or limiting the power of part of electric equipment;
(2) When energy flows from the electric equipment to the power battery, the energy management unit controls the braking torque of the engine in the range extender to ensure that the total energy feedback power of the electric equipment of the system does not exceed the allowable charging power of the power battery.
Has the advantages that:
1. the range extender diesel engine works at an economic rotating speed, and energy is saved.
2. In the hybrid mode, the power requirements of the equipment under the limit load are realized by matching the power of the range extender and the power battery and discharging current of the power battery at 2C or higher in a short time, the power of the range extender is automatically regulated by the energy pipe system, and the reasonable energy distribution among the power battery, the range extender and the electric equipment is realized. In the pure electric mode, the energy management system realizes energy management between the power battery and the electric equipment by automatically adjusting the power of the electric equipment.
Drawings
FIG. 1 is a schematic structural diagram of the present invention.
Detailed Description
The following describes the embodiments in further detail with reference to the accompanying drawings. The following examples are only for illustrating the technical solutions of the present invention more clearly, and the protection scope of the present invention is not limited thereby.
As shown in FIG. 1, an electrically driven paving machine energy management system includes: the system comprises a power battery, a range extender, electric equipment, a direct current bus and an energy management unit; the power source 1 is a power battery, the power source 2 is a range extender, the power battery, the range extender and the electric equipment are all connected with a direct current bus, the energy management unit is respectively connected with the power battery, the range extender and the electric equipment,
the energy management unit adjusts the power of the range extender and is used for realizing energy distribution management among the power battery, the range extender and the electric equipment;
the energy management unit adjusts the power of the electric equipment and is used for realizing energy distribution management between the power battery and the electric equipment.
The power battery can be charged to store energy and can also be discharged to release energy, namely the energy can flow to the direct current bus from the power battery, and also can flow to the power battery from the direct current bus.
The range extender includes: an engine and a generator in series therewith; starting an engine by electric work of a generator, and then enabling the generator to exit from an electric working mode and enter into a power generation mode; energy flows from the direct current bus to the range extender only when the engine is started, and the other energy flows from the range extender to the direct current bus, so that the power battery is charged, or electric energy is provided for electric equipment.
When the electric equipment works in an electric state, energy flows to the electric equipment from the direct current bus; when the electric equipment works in a power generation state, energy flows to the direct current bus from the electric equipment, and energy feedback braking is achieved.
A control method of an energy management system of an electrically driven paver, wherein the working mode of the management system comprises the following steps: the electric motor comprises a pure electric mode and a hybrid mode, and the working mode is switched by a mode switch.
Further, the concrete control method of the hybrid mode comprises the following modes:
(1) The power of the range extender is automatically adjusted along with the power consumption, and the system uses the power P 1C The power battery is charged for the first time,
the realization conditions are as follows: when P is present 3 ＜P 2N - P 1c When and P is 2 =P 1 +P 3 ，P 1 =P 1C ；
(2) Range extender with power P 2N Generating electricity, system with power P 1 The power battery is charged for the first time,
the realization conditions are as follows: when P is present 3 ≥P 2N - P 1c ，P 3 ＜P 2N When and P is 2 = P 2N ，P 1 = P 2 - P 3 ；
(3) Power P of range extender 2N Power generation, power cell with P 1 The power is discharged and the discharge is carried out,
the realization conditions are as follows: when P is present 3 ≥P 2N And P is 2 = P 2N ，P 1 = P 3 - P 2 ；
Wherein: p 2N For generating power allowed by the range extender, P 1c Allowable charging power for power battery, P 1 For real-time power of power cells, P 2 For range extender real-time power, P 3 The real-time power of the electric equipment is provided.
Further, the specific control method of the pure electric mode comprises the following modes:
(1) When energy flows to electric equipment from the power battery, the energy management unit ensures that the total power of all electric equipment of the system does not exceed the allowed discharge power by staggering power utilization or limiting the power of part of electric equipment;
(2) When energy flows from the electric equipment to the power battery, the energy management unit controls the braking torque of the engine in the range extender to ensure that the total energy feedback power of the electric equipment of the system does not exceed the allowable charging power of the power battery.
The range extender diesel engine works at an economic rotating speed, and energy is saved.
In the hybrid mode, the power requirements of the equipment under the limit load are realized by matching the power of the range extender and the power battery and discharging current of the power battery at 2C or higher in a short time, the power of the range extender is automatically regulated by the energy pipe system, and the reasonable energy distribution among the power battery, the range extender and the electric equipment is realized. In the pure electric mode, the energy management system realizes energy management between the power battery and the electric equipment by automatically adjusting the power of the electric equipment.
The above description is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, it is possible to make various improvements and modifications without departing from the technical principle of the present invention, and those improvements and modifications should be considered as the protection scope of the present invention.

Claims (4)

1. An electrically driven paver energy management system, comprising: the system comprises a power battery, a range extender, electric equipment, a direct current bus and an energy management unit; the power battery, the range extender and the electric equipment are all connected with the direct current bus, the energy management unit is respectively connected with the power battery, the range extender and the electric equipment,
the energy management unit regulates the power of the range extender and is used for realizing energy distribution management among the power battery, the range extender and the electric equipment;
the energy management unit regulates the power of the electric equipment, is used for realizing energy distribution management between the power battery and the electric equipment,
the operation mode of the management system comprises the following steps: a pure electric mode and a hybrid mode, the working mode is switched by a mode switch,
the concrete control method of the mixing mode comprises the following modes:
(1) The power of the range extender is automatically adjusted along with the power consumption, and the system uses the power P 1C The power battery is charged for the first time,
the realization conditions are as follows: when P is present 3 ＜P 2N - P 1c When and P is 2 =P 1 +P 3 ，P 1 =P 1C ；
(2) Power P of range extender 2N Generating electricity, system with power P 1 The power battery is charged by the power battery,
the realization conditions are as follows: when P is present 3 ≥P 2N - P 1c ，P 3 ＜P 2N And P is 2 = P 2N ，P 1 = P 2 - P 3 ；
(3) Power P of range extender 2N Power generation, power cell with P 1 The power is discharged and the discharge is carried out,
the realization conditions are as follows: when P is present 3 ≥P 2N When and P is 2 = P 2N ，P 1 = P 3 - P 2 ；
Wherein: p 2N For generating power allowed by the range extender, P 1c Allowable charging power for power battery, P 1 For real-time power of power cells, P 2 In order to provide real-time power for the range extender,P 3 real-time power is provided for the electric equipment;
the pure electric mode specific control method comprises the following modes:
(1) When energy flows to electric equipment from the power battery, the energy management unit ensures that the total power of all electric equipment of the system does not exceed the allowed discharge power by staggering power utilization or limiting the power of part of electric equipment;
(2) When energy flows from the electric equipment to the power battery, the energy management unit controls the braking torque of the engine in the range extender to ensure that the total energy feedback power of the electric equipment of the system does not exceed the allowable charging power of the power battery.
2. The system of claim 1, wherein the power cell is capable of being charged to store energy and discharged to release energy, wherein energy is capable of flowing from the power cell to the dc bus and from the dc bus to the power cell.
3. The system for managing power of an electrically driven paving machine of claim 1, wherein the range extender comprises: an engine and a generator in series therewith; starting an engine by electric work of a generator, and then enabling the generator to exit from an electric working mode and enter into a power generation mode; energy flows to the range extender from the direct current bus only when the engine is started, and other energy flows to the direct current bus from the range extender, so that the power battery is charged, or electric energy is provided for electric equipment.
4. The system of claim 1, wherein when the powered device is operating in the powered mode, power flows from the dc bus to the powered device; when the electric equipment works in a power generation state, energy flows to the direct current bus from the electric equipment, and energy feedback braking is achieved.
CN202111012090.2A 2021-08-31 2021-08-31 Energy management system and control method for electrically driven paver Active CN113619557B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202111012090.2A CN113619557B (en) 2021-08-31 2021-08-31 Energy management system and control method for electrically driven paver

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Application Number Priority Date Filing Date Title
CN202111012090.2A CN113619557B (en) 2021-08-31 2021-08-31 Energy management system and control method for electrically driven paver

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CN113619557B true CN113619557B (en) 2023-02-03

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Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104590043B (en) * 2014-12-27 2017-02-22 北京新能源汽车股份有限公司 Energy management system for range extending type electric car and method thereof
CN106080580B (en) * 2016-06-08 2018-05-08 北京新能源汽车股份有限公司 Extended-range electric vehicle and its energy management control method and device
CN111114530B (en) * 2019-12-03 2021-04-06 一汽解放汽车有限公司 Energy management method and device for extended range vehicle, controller and storage medium
CN111532149A (en) * 2020-06-11 2020-08-14 汉腾新能源汽车科技有限公司 Extended range electric vehicle power supply system and configuration method thereof
CN212400925U (en) * 2020-07-29 2021-01-26 四川鼎鸿智电装备科技有限公司 Energy management system of extended-range hybrid power engineering machinery

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