WO2023019856A1 - 在线供电充电系统及控制方法 - Google Patents

在线供电充电系统及控制方法 Download PDF

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Publication number
WO2023019856A1
WO2023019856A1 PCT/CN2021/142717 CN2021142717W WO2023019856A1 WO 2023019856 A1 WO2023019856 A1 WO 2023019856A1 CN 2021142717 W CN2021142717 W CN 2021142717W WO 2023019856 A1 WO2023019856 A1 WO 2023019856A1
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WIPO (PCT)
Prior art keywords
module
battery
motor
voltage conversion
voltage
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PCT/CN2021/142717
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English (en)
French (fr)
Inventor
沈得贵
孙永魁
贾志云
Original Assignee
西安特来电领充新能源科技有限公司
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Priority to EP21954091.1A priority Critical patent/EP4234311A1/en
Publication of WO2023019856A1 publication Critical patent/WO2023019856A1/zh

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R16/00—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for
    • B60R16/02—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements
    • B60R16/03—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements for supply of electrical power to vehicle subsystems or for
    • B60R16/033—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements for supply of electrical power to vehicle subsystems or for characterised by the use of electrical cells or batteries
    • 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
    • B60L53/00—Methods of charging batteries, specially adapted for electric vehicles; Charging stations or on-board charging equipment therefor; Exchange of energy storage elements in electric vehicles
    • B60L53/20—Methods of charging batteries, specially adapted for electric vehicles; Charging stations or on-board charging equipment therefor; Exchange of energy storage elements in electric vehicles characterised by converters located in the vehicle
    • B60L53/22—Constructional details or arrangements of charging converters specially adapted for charging electric vehicles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L53/00—Methods of charging batteries, specially adapted for electric vehicles; Charging stations or on-board charging equipment therefor; Exchange of energy storage elements in electric vehicles
    • B60L53/60—Monitoring or controlling charging stations
    • B60L53/62—Monitoring or controlling charging stations in response to charging parameters, e.g. current, voltage or electrical charge
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R16/00—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for
    • B60R16/005—Electro-mechanical devices, e.g. switched
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/0029—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/0063—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with circuits adapted for supplying loads from the battery
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/007—Regulation of charging or discharging current or voltage
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/007—Regulation of charging or discharging current or voltage
    • H02J7/00712—Regulation of charging or discharging current or voltage the cycle being controlled or terminated in response to electric parameters
    • H02J7/007182—Regulation of charging or discharging current or voltage the cycle being controlled or terminated in response to electric parameters in response to battery voltage
    • 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
    • B60L2200/00—Type of vehicles
    • B60L2200/40—Working vehicles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L2210/00—Converter types
    • B60L2210/10—DC to DC converters
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J2207/00—Indexing scheme relating to details of circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J2207/20—Charging or discharging characterised by the power electronics converter
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J2310/00—The network for supplying or distributing electric power characterised by its spatial reach or by the load
    • H02J2310/40—The network being an on-board power network, i.e. within a vehicle
    • H02J2310/48—The network being an on-board power network, i.e. within a vehicle for electric vehicles [EV] or hybrid vehicles [HEV]
    • 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
    • Y02T10/60—Other road transportation technologies with climate change mitigation effect
    • Y02T10/7072—Electromobility specific charging systems or methods for batteries, ultracapacitors, supercapacitors or double-layer capacitors
    • 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
    • Y02T90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02T90/10—Technologies relating to charging of electric vehicles
    • Y02T90/14—Plug-in electric vehicles

Definitions

  • the present application belongs to the technical field of vehicle power supply, and in particular relates to an online power supply charging system and a control method.
  • pure electric construction machinery vehicles generally use on-board chargers to directly supply power to the motor, or use built-in batteries to supply power to the motor.
  • the allowable charging current of the built-in battery must be greater than the maximum output current of the on-board charger, otherwise, when the motor stops suddenly, the on-board charger cannot respond in time, which will cause a large current to charge the built-in battery, which will bring safety problems to the built-in battery; At the same time, because the allowable charging current of the built-in battery is high, the capacity of the built-in battery is required to be large, and the cost of the built-in battery accounts for nearly 70% of the entire power system, resulting in high system cost.
  • the purpose of the present application is to provide an online power supply and charging system and a control method, aiming at solving the problems of low safety and high cost of the traditional online power supply and charging system.
  • the embodiment of the present application provides an online power supply and charging system, which is applied to construction machinery vehicles, including:
  • a motor module configured to control the operation process of the construction machinery vehicle
  • a battery module configured to receive or discharge electrical energy
  • the on-board charger module is electrically connected to the motor module and is configured to be connected to an external power source and supply power to the motor module;
  • a switch module electrically connected to the motor module, the battery module and the on-board charger module, configured to connect or disconnect the electrical connection between the battery module and the motor module, and to connect or disconnecting the electrical connection between the on-board charger module and the battery module;
  • a voltage conversion module electrically connected to the switch module, the motor module, the battery module and the on-board charger module, configured to convert the output voltage of the battery module to supply power to the motor module , and charge the battery module after performing voltage conversion on the input voltage of the voltage conversion module.
  • the online power supply and charging system further includes:
  • the vehicle controller is electrically connected to the motor module, the battery module, the on-board charger module and the switch module, and is configured to control the working state of the motor module and control the charging and discharging of the battery module process, control the on-board charger module to be connected to an external power source, and control the on and off states of the switch module.
  • the battery module includes:
  • a power battery electrically connected to the voltage conversion module and the switch module, and configured to store electrical energy
  • the battery management unit is electrically connected to the power battery and the voltage conversion module, and is configured to control the charging and discharging process of the power battery and control the voltage conversion module to voltage the input voltage or output voltage of the power battery. transform.
  • the motor module includes:
  • a motor configured to provide power to the construction machinery vehicle
  • the motor controller is electrically connected to the motor, the on-board charger module, the voltage conversion module and the switch module, and is configured to control the operation of the motor.
  • the voltage conversion module includes a bidirectional DC/DC converter.
  • the on-board charger module includes a direct contact power taking device and a non-contact power taking device.
  • the battery capacity of the battery module is 10-50KWh.
  • the switch module includes an electromagnetic relay.
  • the engineering machinery vehicle includes a pure electric vehicle.
  • the embodiment of the present application provides a control method for an online power supply and charging system, which is applied to the online power supply and charging system, and includes the following steps:
  • controlling the voltage conversion module to perform voltage conversion on the output voltage of the battery module to supply power to the motor module;
  • the on-board charger module is controlled to supply power to the motor module and the battery module, and at the same time, the voltage conversion module is controlled to perform voltage conversion on the input voltage of the voltage conversion module or the output voltage of the battery module, so as to The battery module is charged or discharged.
  • controlling the voltage conversion module to perform voltage conversion on the output voltage of the battery module to supply power to the motor module includes:
  • the switch module When the electrical connection between the on-board charger module and the motor module and the voltage conversion module is disconnected and when the output voltage of the battery module is lower than the required voltage of the motor module, the switch module is controlled to be disconnected.
  • the electrical connection between the battery module and the motor module is opened, and the output voltage of the battery module is boosted by the voltage conversion module to supply power to the motor module.
  • controlling the on-board charger module to supply power to the motor module and the battery module, and at the same time controlling the input of the voltage conversion module to the voltage conversion module voltage or the output voltage of the battery module to perform voltage conversion to charge or discharge the battery module including:
  • the switch module When the electrical connection between the on-board charger module and the voltage conversion module and the motor module is connected, the switch module is controlled to disconnect the electrical connection between the battery module and the motor module, through The on-board charger module supplies power to the voltage conversion module and the motor module, and at the same time performs voltage conversion on the input voltage of the voltage conversion module or the output voltage of the battery module through the voltage conversion module, so that all charging or discharging the above battery module.
  • control method further includes:
  • the electric motor module is supplied with power by the on-board charger module.
  • control method further includes:
  • control the switch module Connecting the electrical connection between the battery module and the motor module, and supplying power to the motor module through the battery module.
  • control method further includes:
  • the switch module is controlled to connect the electrical connection between the on-board charger module and the battery module, and the battery module is charged through the on-board charger module.
  • the embodiment of the present application has the beneficial effects that: the above-mentioned online power supply and charging system connects to the external power supply through the on-board charger module and supplies power to the motor module; connects or disconnects the battery module and the motor through the switch module
  • the electrical connection between the modules, and the electrical connection between the on-board charger module and the battery module are connected or disconnected; the output voltage of the battery module is converted by the voltage conversion module to supply power to the motor module, and the voltage conversion module
  • the input voltage of the battery is charged to the battery module after voltage conversion, so that the current of the battery module can be controlled and the number of charging and discharging of the battery module can be reduced; when the motor module stops suddenly, the input current of the battery can be controlled by the voltage conversion module Voltage conversion protects the safety of the battery; at the same time, the capacity requirement of the battery module is low, which greatly reduces the cost of the entire system.
  • the above online power supply and charging system connects the external power supply through the on-board charger module and supplies power to the motor module; connects or disconnects the electrical connection between the battery module and the motor module through the switch module, and connects or disconnects the on-board charger
  • the current size of the charging and discharging of the module reduces the number of charging and discharging of the battery module; when the motor module suddenly stops, the voltage conversion module can be used to convert the voltage of the input current of the battery to protect the safety of the battery; at the same time, the capacity requirement of the battery module is low , greatly reducing the cost of the entire system.
  • FIG. 1 is a schematic structural diagram of an online power supply and charging system provided by an embodiment of the present application
  • FIG. 2 is a schematic structural diagram of an online power supply and charging system provided by an embodiment of the present application.
  • 1-motor module 11-motor, 12-motor controller, 2-battery module, 21-power battery, 22-battery management unit, 3-vehicle charger module, 4-switch module, 5-voltage conversion module, 6 -Vehicle controller.
  • first and second are used for descriptive purposes only, and cannot be interpreted as indicating or implying relative importance or implicitly specifying the quantity of indicated technical features. Thus, a feature defined as “first” and “second” may explicitly or implicitly include one or more of these features.
  • “plurality” means two or more, unless otherwise specifically defined.
  • the allowable charging current of the built-in battery is high, the capacity of the built-in battery is required to be large, and the cost of the built-in battery accounts for nearly 70% of the entire power system, so the choice of built-in battery capacity is limited, and the system cost is high , which is not conducive to the reduction of the cost of the vehicle and the standardization of the battery; and when the voltage of the built-in battery is low, it cannot supply power to the motor at the same time as the on-board charger, and can only supply power to the motor after charging reaches the preset voltage, thus affecting the vehicle maximum power.
  • the present application provides an online power supply and charging system, which uses a voltage conversion module to convert the output voltage of the battery module to supply power to the motor module, or converts the input voltage of the voltage conversion module to charge the battery module, thereby Control the charging and discharging current of the battery module, reduce the charging and discharging times of the battery module, protect the battery safety, and reduce the system cost.
  • Figure 1 is a schematic structural diagram of an online power supply and charging system provided by an embodiment of this application, as shown in Figure 1, for the sake of illustration, only Parts related to this embodiment are shown, and the details are as follows:
  • the online power supply and charging system is applied to construction machinery vehicles, including:
  • the motor module 1 is configured to control the operation process of the engineering machinery vehicle
  • the battery module 2 is configured to receive or release electric energy
  • the on-board charger module 3 is electrically connected to the motor module 1 and is configured to be connected to an external power supply and supply power to the motor module 1;
  • the switch module 4 is electrically connected with the motor module 1, the battery module 2 and the on-board charger module 3, and is configured to connect or disconnect the electrical connection between the battery module 2 and the motor module 1, and to connect or disconnect the on-board charging Electrical connection between the machine module 3 and the battery module 2;
  • the voltage conversion module 5 is electrically connected to the switch module 4, the motor module 1, the battery module 2 and the on-board charger module 3, and is configured to convert the output voltage of the battery module 2 to supply power to the motor module 1, and to convert the voltage The input voltage of the module 5 is charged to the battery module 1 after voltage conversion.
  • the on-board charger module when only the electrical connection between the on-board charger module and the motor module is connected, the on-board charger module is connected to an external power supply (that is, the on-board charger module is in the online state of the external power supply) and supplies power to the motor module , by turning on or off the switch module, the battery module can supply power to the motor module, or the on-board charger module can charge the battery module, and the output voltage of the battery module can be voltage converted (such as boost conversion) by the voltage conversion module Then supply power to the motor module, or perform voltage conversion (such as step-down conversion or boost conversion) on the input voltage of the voltage conversion module to charge the battery module, so as to control the input voltage and output voltage of the battery module and prevent overvoltage damage
  • the battery module not only improves the safety of the battery module, but also reduces the requirements for battery capacity and reduces the production cost of the system.
  • the motor module is powered to avoid the traditional online charging and discharging system. Only after the battery module is charged can the motor module continue to be powered, thereby reducing the number of charging and discharging of the battery module, improving battery life, improving power supply efficiency, and ensuring the maximum power of the vehicle. .
  • Fig. 2 is a schematic structural diagram of the online power supply and charging system provided by the embodiment of the present application. As shown in Fig. 2, for example, the online power supply and charging system further includes:
  • the vehicle controller 6 is electrically connected to the motor module 1, the battery module 2, the on-board charger module 3 and the switch module 4, and is configured to control the working state of the motor module 1, control the charging and discharging process of the battery module 2, and control the on-board charging
  • the machine module 3 is connected to an external power supply and controls the on and off status of the switch module 4.
  • the start and stop of the motor module is controlled by the vehicle controller
  • the charging and discharging of the battery module is controlled by the vehicle controller
  • the input voltage of the voltage conversion module or the output of the battery module is controlled by the voltage conversion module.
  • the voltage is converted to voltage, so that when the input voltage is too high, the voltage is lowered to protect the battery module, or when the output voltage is too low, the voltage is boosted so that the motor module can be powered normally;
  • the on-board charger module is controlled by the vehicle controller to connect to the external
  • the power supply supplies power to the motor module or the voltage conversion module, and controls the on and off status of the switch module through the vehicle controller.
  • the battery module 2 includes:
  • 21 a power battery, electrically connected to the voltage conversion module 5 and the switch module 4, and configured to store electric energy;
  • battery management unit electrically connected to the power battery 21 and the voltage conversion module 5, configured to control the charging and discharging process of the power battery 21 and control the voltage conversion module 5 to perform voltage conversion on the input voltage or output voltage of the power battery 21.
  • the battery management unit sends the power demand to the on-board charger module according to the charging command issued by the vehicle controller, so as to realize the charging process of the power battery, and at the same time sends a step-up or step-down signal to the voltage conversion module. Instructions to boost the output voltage of the power battery to meet the power supply requirements of the motor module, or to step down the input voltage of the power battery to prevent the power battery from being burned by excessive voltage.
  • the motor module 1 includes:
  • the motor 11 is configured to provide power to construction machinery vehicles
  • the motor controller 12 is electrically connected with the motor 11, the on-board charger module 3, the voltage conversion module 5 and the switch module 4, and is configured to control the operation of the motor.
  • the motor controller obtains electric energy from the voltage conversion module or the on-board charger module to complete the driving work of the motor module.
  • the voltage conversion module may include a bidirectional DC/DC converter (ie, Direct current-Direct current converter, direct current to direct current converter).
  • a bidirectional DC/DC converter ie, Direct current-Direct current converter, direct current to direct current converter
  • the voltage conversion module can include a bidirectional DC/DC converter, so that the output voltage or input voltage of the battery module can be boosted or bucked.
  • the voltage meets the demand voltage of the motor module, and it can also perform step-down charging when the input voltage is too large, so as to protect the battery module and prevent it from being burned out by excessive voltage.
  • the on-board charger module includes a direct-contact power-taking device and a non-contact power-taking device.
  • the on-board charger module includes a direct contact power acquisition device and a non-contact power acquisition device, so that direct contact or non-contact power can be obtained from the grid to realize the online charging of the present application.
  • the battery capacity of the battery module is 10-50KWh.
  • the battery capacity of the battery module is 10-50KWh, for example, 16KWh, which greatly reduces the battery capacity requirement of the battery module, thereby effectively reducing the production cost of the entire system.
  • the switch module includes an electromagnetic relay.
  • the switch module includes an electromagnetic relay, so that the switch module can be turned on or off according to the switch command controlled by the vehicle.
  • construction machinery vehicles include pure electric vehicles.
  • construction machinery vehicles include pure electric vehicles, so that the system is not only applicable to large-scale construction machinery vehicles for engineering construction, but also to ordinary pure electric vehicles, and has a wide range of applications.
  • this embodiment discloses a construction machinery vehicle, which applies an online power supply and charging system.
  • the construction machinery vehicle applies the online power supply and charging system of the present application, so that when the construction machinery vehicle only has the electrical connection between the vehicle charger module and the motor module connected, the external power supply is connected through the vehicle charger module And supply power to the motor module, through the conduction or closure of the switch module, the battery module can supply power to the motor module, or the on-board charger module can charge the battery module, and the output voltage of the battery module can be converted through the voltage conversion module Supply power to the motor module, or charge the battery module after performing voltage conversion (for example, buck conversion or boost conversion) on the input voltage of the voltage conversion module.
  • voltage conversion for example, buck conversion or boost conversion
  • this embodiment discloses a method for controlling an online power supply and charging system, including the following steps executed by the vehicle controller:
  • the control voltage transformation module performs voltage transformation on the output voltage of the battery module to supply power to the motor module;
  • the on-board charger module is controlled to supply power to the motor module and the battery module
  • the voltage conversion module is controlled to perform voltage conversion on the input voltage of the voltage conversion module or the output voltage of the battery module, so as to charge or discharge the battery module.
  • the battery module when only the electrical connection between the on-board charger module and the motor module is connected, power can be supplied to the motor module through the on-board charger module; when only the electrical connection between the battery module and the motor module is connected , can supply power to the motor module through the battery module; when the motor module stops, it can charge the battery module through the on-board charger module; when the output voltage of the battery module is lower than the required voltage of the motor module, the battery module can The output voltage of the voltage conversion module is converted to supply power to the motor module; when the on-board charger module supplies power to the battery module and the motor module at the same time, the input voltage of the voltage conversion module or the output voltage of the battery module is controlled by the voltage conversion module. Charge or discharge the battery module.
  • control voltage transformation module performs voltage transformation on the output voltage of the battery module to supply power to the motor module, including:
  • the control switch module disconnects the electrical connection between the battery module and the motor module, The output voltage of the battery module is boosted by the voltage conversion module to supply power to the motor module.
  • the system when the electrical connection between the on-board charger module and the motor module and the voltage conversion module is disconnected and when the output voltage of the battery module is lower than the required voltage of the motor module, the system is in the off-line mode of the on-board charger, because when The current output voltage of the battery module cannot meet the required voltage of the motor module, so it is necessary to boost the output voltage of the battery module through the voltage conversion module to meet the required voltage of the motor module and supply power to the motor module to maintain the normal operation of the motor Work.
  • controlling the on-board charger module to supply power to the motor module and the battery module, and at the same time controlling the voltage conversion module to perform voltage conversion on the input voltage of the voltage conversion module or the output voltage of the battery module, so as to charge or discharge the battery module includes:
  • the control switch module disconnects the electrical connection between the battery module and the motor module, and supplies power to the voltage conversion module and the motor module through the on-board charger module , at the same time, the input voltage of the voltage conversion module or the output voltage of the battery module is converted to charge or discharge the battery module through the voltage conversion module.
  • the control switch module disconnects the battery module and the motor module.
  • the electrical connection between the modules supplies power to the voltage conversion module and the motor module at the same time through the on-board charger module.
  • the module steps down the input voltage of the voltage conversion module to protect the normal charging of the battery module.
  • the output voltage of the battery module can be adjusted through the voltage conversion module. Boost the voltage so that the Motor Module can be powered normally.
  • the on-board charger module is controlled to supply power to the motor module, and the control method further includes:
  • the switch module when the switch module is disconnected, the electrical connection between the on-board charger module and the voltage conversion module is disconnected, and there is no three-phase AC input, the system is in the battery offline mode, and only the on-board charger module supplies power to the motor module. powered by.
  • control method further includes:
  • the control switch module connects the electrical connection between the battery module and the motor module , to supply power to the motor module through the battery module.
  • the system when the electrical connection between the on-board charger module and the motor module and the voltage conversion module is disconnected, the system is in the off-line mode of the on-board charger.
  • the output voltage of the battery module is greater than or equal to the required voltage of the motor module , which means that the normal output voltage of the battery module can meet the required voltage of the motor module, so the direct control switch module connects the electrical connection between the battery module and the motor module, and supplies power to the motor module through the battery module.
  • the on-board charger module is controlled to charge the battery module, and the control method further includes:
  • control switch module connects the electrical connection between the on-board charger module and the battery module, and charges the battery module through the on-board charger module.
  • control switch module connects the electrical connection between the on-board charger module and the battery module, and charges the battery module through the on-board charger module.
  • the disclosed uninterruptible power supply parallel redundancy system and method can be implemented in other ways.
  • the above-described embodiment of the uninterruptible power supply parallel redundant system is only illustrative, for example, the division of modules or units is only a logical function division, and there may be other division methods in actual implementation, such as multiple A unit or component may be combined or may be integrated into another system, or some features may be omitted, or not implemented.
  • the mutual coupling or direct coupling or communication connection shown or discussed may be through some interfaces, and the indirect coupling or communication connection of devices or units may be in electrical, mechanical or other forms.
  • a unit described as a separate component may or may not be physically separated, and a component displayed as a unit may or may not be a physical unit, that is, it may be located in one place, or may be distributed to multiple network units. Part or all of the units can be selected according to actual needs to achieve the purpose of the solution of this embodiment.
  • each functional unit in each embodiment of the present application may be integrated into one processing unit, each unit may exist separately physically, or two or more units may be integrated into one unit.
  • the above-mentioned integrated units can be implemented in the form of hardware or in the form of software functional units.

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Abstract

本申请提供一种在线供电充电系统及控制方法，通过车载充电机模块接入外部电源并向电机模块供电；通过开关模块接通或断开电池模块与电机模块之间的电连接，以及接通或断开车载充电机模块与电池模块之间的电连接；通过电压变换模块对电池模块的输出电压进行电压变换后向电机模块供电，以及对电压变换模块的输入电压进行电压变换后向电池模块充电，从而能够控制电池模块充放电的电流大小，减少电池模块的充放电次数；当电机模块突然停转时，能够通过电压变换模块对电池的输入电流进行电压变换，保护电池安全；同时对电池模块的容量要求较低，大大降低整个系统的成本。

Description

在线供电充电系统及控制方法
本申请要求于2021年08月18日在中国国家专利局提交的、申请号为202110948891.3的发明名称为“在线供电充电系统及控制方法”的中国专利申请的优先权，其全部内容通过引用结合在本申请中。
技术领域
本申请属于车辆供电技术领域，尤其涉及一种在线供电充电系统及控制方法。
背景技术
目前，纯电动的工程机械车辆一般采用车载充电机直接向电机供电作业，或者采用内置电池向电机供电作业。
技术问题
内置电池的允许充电电流必须大于车载充电机的最大输出电流，否则当电机突然停转时，车载充电机无法及时响应，将会导致大电流给内置电池充电，带来内置电池的安全性问题；同时，因为内置电池的允许充电电流较高，对内置电池的容量要求较大，而内置电池的成本占整个动力系统的将近70％，导致系统成本较高。
技术解决方案
本申请的目的在于提供一种在线供电充电系统及控制方法，旨在解决传统在线供电充电系统安全性低、成本高的问题。
为了实现上述目的，第一方面，本申请实施例提供了一种在线供电充电系统，应用于工程机械车辆，包括：
电机模块，被配置为控制所述工程机械车辆的作业过程；
电池模块，被配置为接收或释放电能；
车载充电机模块，与所述电机模块电连接，被配置为接入外部电源并向所述电机模块供电；
开关模块，与所述电机模块、所述电池模块和所述车载充电机模块电连接，被配置为接通或断开所述电池模块与所述电机模块之间的电连接，以及接通或断开所述车载充电机模块与所述电池模块之间的电连接；
电压变换模块，与所述开关模块、所述电机模块、所述电池模块和所述车载充电机模块电连接，被配置为对所述电池模块的输出电压进行电压变换后向所述电机模块供电，以及对所述电压变换模块的输入电压进行电压变换后向所述电池模块充电。
在第一方面的一种可能的实施方式中，所述在线供电充电系统还包括：
整车控制器，与所述电机模块、所述电池模块、所述车载充电机模块和所述开关模块 电连接，被配置为控制所述电机模块的工作状态、控制所述电池模块的充放电过程、控制所述车载充电机模块接入外部电源，以及控制所述开关模块的通、断状态。
在第一方面的另一种可能的实施方式中，所述电池模块包括：
动力电池，与所述电压变换模块和所述开关模块电连接，被配置为存储电能；
电池管理单元，与所述动力电池和所述电压变换模块电连接，被配置为控制所述动力电池的充放电过程以及控制所述电压变换模块对所述动力电池的输入电压或输出电压进行电压变换。
在第一方面的另一种可能的实施方式中，所述电机模块包括：
电机，被配置为向所述工程机械车辆提供动力；
电机控制器，与所述电机、所述车载充电机模块、所述电压变换模块和所述开关模块电连接，被配置为控制所述电机工作。
在第一方面的另一种可能的实施方式中，所述电压变换模块包括双向DC/DC变换器。
在第一方面的另一种可能的实施方式中，所述车载充电机模块包括直接接触式取电装置和非接触式取电装置。
在第一方面的另一种可能的实施方式中，所述电池模块的电池容量为10～50KWh。
在第一方面的另一种可能的实施方式中，所述开关模块包括电磁继电器。
在第一方面的另一种可能的实施方式中，所述工程机械车辆包括纯电动汽车。
第二方面，本申请实施例提供了一种在线供电充电系统的控制方法，应用于所述的在线供电充电系统，包括如下步骤：
控制所述电压变换模块对所述电池模块的输出电压进行电压变换后向所述电机模块供电；
或者，控制所述车载充电机模块向所述电机模块和所述电池模块供电，同时控制所述电压变换模块对所述电压变换模块的输入电压或所述电池模块的输出电压进行电压变换，以使所述电池模块充电或放电。
在第二方面的另一种可能的实施方式中，所述控制所述电压变换模块对所述电池模块的输出电压进行电压变换后向所述电机模块供电，包括：
当断开所述车载充电机模块与所述电机模块和所述电压变换模块之间的电连接且当所述电池模块的输出电压小于所述电机模块的需求电压时，控制所述开关模块断开所述电池模块和所述电机模块之间的电连接，通过所述电压变换模块对所述电池模块的输出电压进行升压后向所述电机模块供电。
在第二方面的另一种可能的实施方式中，所述控制所述车载充电机模块向所述电机模 块和所述电池模块供电，同时控制所述电压变换模块对所述电压变换模块的输入电压或所述电池模块的输出电压进行电压变换，以使所述电池模块充电或放电，包括：
当接通所述车载充电机模块与所述电压变换模块和所述电机模块之间的电连接时，控制所述开关模块断开所述电池模块和所述电机模块之间的电连接，通过所述车载充电机模块向所述电压变换模块和所述电机模块供电，同时通过所述电压变换模块对所述电压变换模块的输入电压或所述电池模块的输出电压进行电压变换，以使所述电池模块充电或放电。
在第二方面的另一种可能的实施方式中，所述控制方法还包括：
当断开所述开关模块且断开所述车载充电机模块与所述电压变换模块之间的电连接时，通过所述车载充电机模块向所述电机模块供电。
在第二方面的另一种可能的实施方式中，所述控制方法还包括：
当断开所述车载充电机模块与所述电机模块和所述电压变换模块之间的电连接且所述电池模块的输出电压大于或等于所述电机模块的需求电压时，控制所述开关模块接通所述电池模块和所述电机模块之间的电连接，通过所述电池模块向所述电机模块供电。
在第二方面的另一种可能的实施方式中，所述控制方法还包括：
当所述电机正常停机时，控制所述开关模块接通所述车载充电机模块和所述电池模块之间的电连接，通过所述车载充电机模块向所述电池模块充电。
本申请实施例与现有技术相比存在的有益效果是：上述的在线供电充电系统，通过车载充电机模块接入外部电源并向电机模块供电；通过开关模块接通或断开电池模块与电机模块之间的电连接，以及接通或断开车载充电机模块与电池模块之间的电连接；通过电压变换模块对电池模块的输出电压进行电压变换后向电机模块供电，以及对电压变换模块的输入电压进行电压变换后向电池模块充电，从而能够控制电池模块充放电的电流大小，减少电池模块的充放电次数；当电机模块突然停转时，能够通过电压变换模块对电池的输入电流进行电压变换，保护电池安全；同时对电池模块的容量要求较低，大大降低整个系统的成本。
有益效果
上述的在线供电充电系统，通过车载充电机模块接入外部电源并向电机模块供电；通过开关模块接通或断开电池模块与电机模块之间的电连接，以及接通或断开车载充电机模块与电池模块之间的电连接；通过电压变换模块对电池模块的输出电压进行电压变换后向电机模块供电，以及对电压变换模块的输入电压进行电压变换后向电池模块充电，从而能够控制电池模块充放电的电流大小，减少电池模块的充放电次数；当电机模块突然停转时，能够通过电压变换模块对电池的输入电流进行电压变换，保护电池安全；同时对电池模块的容量要求较低，大大降低整个系统的成本。
附图说明
为了更清楚地说明本申请实施例中的技术方案，下面将对实施例或现有技术描述中所需要使用的附图作简单地介绍，显而易见地，下面描述中的附图仅仅是本申请的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据这些附图获得其他的附图。
图1为本申请实施例提供的在线供电充电系统的结构示意图；
图2为本申请实施例提供的在线供电充电系统的具体结构示意图。
附图标记说明：
1-电机模块，11-电机，12-电机控制器，2-电池模块，21-动力电池，22-电池管理单元，3-车载充电机模块，4-开关模块，5-电压变换模块，6-整车控制器。
本发明的实施方式
为了使本申请所要解决的技术问题、技术方案及有益效果更加清楚明白，以下结合附图及实施例，对本申请进行进一步详细说明。应当理解，此处所描述的具体实施例仅仅用以解释本申请，并不用于限定本申请。
此外，术语“第一”、“第二”仅用于描述目的，而不能理解为指示或暗示相对重要性或者隐含指明所指示的技术特征的数量。由此，限定有“第一”、“第二”的特征可以明示或者隐含地包括一个或者更多个该特征。在本申请的描述中，“多个”的含义是两个或两个以上，除非另有明确具体的限定。
目前，传统的纯电动的工程机械车辆，一般采用车载充电机直接向电机供电作业，或者采用内置电池向电机供电作业，并且要求内置电池的允许充电电流必须大于车载充电机的最大输出电流，否则当电机突然停转时，将会导致车载充电机大电流给内置电池充电，烧毁内置电池；同时内置电池的充放电电流不受控制，频繁充放电，减少内置电池的充放电次数，降低内置电池的使用寿命；因为内置电池的允许充电电流较高，对内置电池的容量要求较大，而内置电池的成本占整个动力系统的将近70％，所以导致内置电池容量选择受限，系统成本较高，不利于整车成本的降低和电池的标准化；并且当内置电池的电压较低时，不能和车载充电机同时给电机供电，只能充电到达预设电压后才能为电机供电，从而影响车辆的最大动力。
为此，本申请提供一种在线供电充电系统，通过电压变换模块对电池模块的输出电压进行电压变换后向电机模块供电，或者对电压变换模块的输入电压进行电压变换后向电池模块充电，从而控制电池模块充放电的电流大小，减少电池模块的充放电次数，保护电池安全，降低系统成本。
下面结合附图，对本申请提供的在线供电充电系统，进行实例性的说明：图1为本申请实施例提供的一种在线供电充电系统的结构示意图，如图1所示，为了便于说明，仅示出与本实施例相关的部分，详述如下：示例性地，在线供电充电系统，应用于工程机械车辆，包括：
电机模块1，被配置为控制工程机械车辆的作业过程；
电池模块2，被配置为接收或释放电能；
车载充电机模块3，与电机模块1电连接，被配置为接入外部电源并向电机模块1供电；
开关模块4，与电机模块1、电池模块2和车载充电机模块3电连接，被配置为接通或断开电池模块2与电机模块1之间的电连接，以及接通或断开车载充电机模块3与电池模块2之间的电连接；
电压变换模块5，与开关模块4、电机模块1、电池模块2和车载充电机模块3电连接，被配置为对电池模块2的输出电压进行电压变换后向电机模块1供电，以及对电压变换模块5的输入电压进行电压变换后向电池模块1充电。
本申请实施例中，当只接通车载充电机模块与电机模块之间的电连接时，通过车载充电机模块接入外部电源(即车载充电机模块处于外部电源在线状态)并向电机模块供电，通过开关模块的导通或关闭，可以使电池模块向电机模块供电，或者使车载充电机模块向电池模块充电，通过电压变换模块可以对电池模块的输出电压进行电压变换(例如升压变换)后向电机模块供电，或者对电压变换模块的输入电压进行电压变换(例如降压变换或升压变换)后向电池模块充电，从而能够控制电池模块的输入电压和输出电压，防止过高电压损坏电池模块，不仅提高电池模块的安全性，而且对电池容量的要求也随之降低，降低系统生产成本；同时，当电池模块的电压较低时，也可以通过电压变换模块升高电压，直接为电机模块供电，避免传统的在线充电放电系统，只能为电池模块充电后，才能继续为电机模块供电，从而减少消耗电池模块的充放电次数，提高电池寿命，提高供电效率，保障车辆的最大动力。
图2为本申请实施例提供的在线供电充电系统的具体结构示意图，如图2所示，示例性地，在线供电充电系统还包括：
整车控制器6，与电机模块1、电池模块2、车载充电机模块3和开关模块4电连接，被配置为控制电机模块1的工作状态、控制电池模块2的充放电过程、控制车载充电机模块3接入外部电源以及控制开关模块4的通、断状态。
本申请实施例中，通过整车控制器控制电机模块的启动和停止，通过整车控制器控制电池模块的充电和放电，进而通过控制电压变换模块对电压变换模块的输入电压或电池模块的输出电压进行电压变换，从而当输入电压过高时降压，保护电池模块，或者当输出电压过 低时升压，以便能够正常为电机模块供电；通过整车控制器控制车载充电机模块接入外部电源并向电机模块或电压变换模块供电，通过整车控制器控制开关模块的通、断状态。
如图2所示，示例性地，电池模块2包括：
21动力电池，与电压变换模块5和开关模块4电连接，被配置为存储电能；
22电池管理单元，与动力电池21和电压变换模块5电连接，被配置为控制动力电池21的充放电过程以及控制电压变换模块5对动力电池21的输入电压或输出电压进行电压变换。
本申请实施例中，电池管理单元根据整车控制器下发的充电指令，向车载充电机模块发送功率需求，从而实现对动力电池的充电过程，以及同时向电压变换模块发送升压或降压指令，以便对动力电池的输出电压进行升压，使其满足电机模块的供电需求，或者对动力电池的输入电压进行降压，防止过高电压烧毁动力电池。
如图2所示，示例性地，电机模块1包括：
电机11，被配置为向工程机械车辆提供动力；
电机控制器12，与电机11、车载充电机模块3、电压变换模块5和开关模块4电连接，被配置为控制电机工作。
本实施例中，通过电机控制器从电压变换模块或车载充电机模块获取电能，完成对电机模块的驱动工作。
如图2所示，电压变换模块可以包括双向DC/DC变换器(即Direct current-Direct current converter，直流转直流变换器)。
本申请实施例中，通过电压变换模块可以包括双向DC/DC变换器，从而能够对电池模块的输出电压或输入电压进行升压或降压变换，既能够在电池模块处于低电压时，升高电压满足电机模块的需求电压，又能够输入电压过大时进行降压充电，保护电池模块，防止被过大电压烧坏。
示例性地，车载充电机模块包括直接接触式取电装置和非接触式取电装置。
本申请实施例中，通过车载充电机模块包括直接接触式取电装置和非接触式取电装置，从而可以采用直接接触的方式或非接触的方式从电网取电，实现本申请的在线充电。
示例性地，电池模块的电池容量为10～50KWh。
本申请实施例中，通过电池模块的电池容量为10～50KWh，例如16KWh，大大降低了电池模块的电池容量要求，从而有效降低整个系统的生成成本。
示例性地，开关模块包括电磁继电器。
本申请实施例中，通过开关模块包括电磁继电器，从而可以根据整车控制的开关指令 导通或关断开关模块。
示例性地，工程机械车辆包括纯电动汽车。
本申请实施例中，通过工程机械车辆包括纯电动汽车，从而使该系统不仅适用于工程建设的大型工程机械车辆，也适用于普通的纯电动汽车，适用范围广。
示例性地，本实施例公开了工程机械车辆，应用在线供电充电系统。
本申请实施例中，工程机械车辆应用本申请的在线供电充电系统，从而当工程机械车辆内部只有接通车载充电机模块与电机模块之间的电连接时，通过车载充电机模块接入外部电源并向电机模块供电，通过开关模块的导通或关闭，可以使电池模块向电机模块供电，或者使车载充电机模块向电池模块充电，通过电压变换模块可以对电池模块的输出电压进行电压变换后向电机模块供电，或者对电压变换模块的输入电压进行电压变换(例如降压变换或升压变换)后向电池模块充电。
示例性地，本实施例公开了一种在线供电充电系统的控制方法，包括由整车控制器执行的如下步骤：
控制电压变换模块对电池模块的输出电压进行电压变换后向电机模块供电；
或者，控制车载充电机模块向电机模块和电池模块供电，同时控制电压变换模块对电压变换模块的输入电压或电池模块的输出电压进行电压变换，以使电池模块充电或放电。
本申请实施例中，当只接通车载充电机模块与电机模块之间的电连接时，可以通过车载充电机模块向电机模块供电；当只接通电池模块与电机模块之间的电连接时，可以通过电池模块向电机模块供电；当电机模块停机时，可以通过车载充电机模块向电池模块充电；当电池模块的输出电压低于电机模块的需求电压时，可以通过电压变换模块对电池模块的输出电压进行电压变换后向电机模块供电；当车载充电机模块同时向电池模块和电机模块供电时，通过控制电压变换模块对电压变换模块的输入电压或电池模块的输出电压进行电压变换，以使电池模块充电或放电。
示例性地，控制电压变换模块对电池模块的输出电压进行电压变换后向电机模块供电，包括：
当断开车载充电机模块与电机模块和电压变换模块之间的电连接且当电池模块的输出电压小于电机模块的需求电压时，控制开关模块断开电池模块和电机模块之间的电连接，通过电压变换模块对电池模块的输出电压进行升压后向电机模块供电。
本申请实施例中，当断开车载充电机模块与电机模块和电压变换模块之间的电连接且当电池模块的输出电压小于电机模块的需求电压时，系统处于车载充电机离线模式，因为当电池模块的当前输出电压无法满足电机模块的需求电压，所以需要通过电压变换模块对电池 模块的输出电压进行升压后，即可满足电机模块的需求电压，能够向电机模块供电，维持电机的正常工作。
示例性地，控制车载充电机模块向电机模块和电池模块供电，同时控制电压变换模块对电压变换模块的输入电压或电池模块的输出电压进行电压变换，以使电池模块充电或放电，包括：
当接通车载充电机模块与电压变换模块和电机模块之间的电连接时，控制开关模块断开电池模块和电机模块之间的电连接，通过车载充电机模块向电压变换模块和电机模块供电，同时通过电压变换模块对电压变换模块的输入电压或电池模块的输出电压进行电压变换，以使电池模块充电或放电。
本申请实施例中，当接通车载充电机模块与电压变换模块和电机模块之间的电连接时，系统处于车载充电机模块与电池模块均在线模式时，控制开关模块断开电池模块和电机模块之间的电连接，通过车载充电机模块同时向电压变换模块和电机模块供电，同时当电机模块突然停转、车载充电机模块无法及时响应、大电流向电池模块充电时，可以通过电压变换模块对电压变换模块的输入电压进行降压，以便保护电池模块正常充电，同时当电池模块的输出电压过低或者电机模块的需求电压过高时，可以通过电压变换模块对电池模块的输出电压进行升压，以便能够为电机模块正常供电。
示例性地，控制车载充电机模块向电机模块供电，控制方法还包括：
当断开开关模块且断开车载充电机模块与电压变换模块之间的电连接时，通过车载充电机模块向电机模块供电。
本申请实施例中，当断开开关模块，断开车载充电机模块与电压变换模块之间的电连接、无三相交流电输入时，系统处于电池离线模式，仅通过车载充电机模块向电机模块供电。
示例性地，控制电池模块向电机模块供电，控制方法还包括：
当断开车载充电机模块与电机模块和电压变换模块之间的电连接且电池模块的输出电压大于或等于电机模块的需求电压时，控制开关模块接通电池模块和电机模块之间的电连接，通过电池模块向电机模块供电。
本申请实施例中，当断开车载充电机模块与电机模块和电压变换模块之间的电连接时，系统处于车载充电机离线模式，当电池模块的输出电压大于或等于电机模块的需求电压时，即表示电池模块的正常输出电压能够满足电机模块的需求电压，因此直接控制开关模块接通电池模块和电机模块之间的电连接，通过电池模块向电机模块供电。
示例性地，控制车载充电机模块向电池模块充电，控制方法还包括：
当电机正常停机时，控制开关模块接通车载充电机模块和电池模块之间的电连接，通 过车载充电机模块向电池模块充电。
本申请实施例中，当电机正常停机时，系统处于电池只充电模式，因此控制开关模块接通车载充电机模块和电池模块之间的电连接，通过车载充电机模块向电池模块充电。
应理解，上述实施例中各步骤的序号的大小并不意味着执行顺序的先后，各过程的执行顺序应以其功能和内在逻辑确定，而不应对本申请实施例的实施过程构成任何限定。
所属领域的技术人员可以清楚地了解到，为了描述的方便和简洁，仅以上述各功能单元、模块的划分进行举例说明，实际应用中，可以根据需要而将上述功能分配由不同的功能单元、模块完成，即将装置的内部结构划分成不同的功能单元或模块，以完成以上描述的全部或者部分功能。实施例中的各功能单元、模块可以集成在一个处理单元中，也可以是各个单元单独物理存在，也可以两个或两个以上单元集成在一个单元中，上述集成的单元既可以采用硬件的形式实现，也可以采用软件功能单元的形式实现。另外，各功能单元、模块的具体名称也只是为了便于相互区分，并不用于限制本申请的保护范围。上述系统中单元、模块的具体工作过程，可以参考前述方法实施例中的对应过程，在此不再赘述。
在上述实施例中，对各个实施例的描述都各有侧重，某个实施例中没有详述或记载的部分，可以参见其它实施例的相关描述。
本领域普通技术人员可以意识到，结合本文中所公开的实施例描述的各示例的单元及算法步骤，能够以电子硬件、或者计算机软件和电子硬件的结合来实现。这些功能究竟以硬件还是软件方式来执行，取决于技术方案的特定应用和设计约束条件。专业技术人员可以对每个特定的应用来使用不同方法来实现所描述的功能，但是这种实现不应认为超出本申请的范围。
在本申请所提供的实施例中，应该理解到，所揭露的不间断电源并机冗余系统和方法，可以通过其它的方式实现。例如，以上所描述的不间断电源并机冗余系统实施例仅仅是示意性的，例如，模块或单元的划分，仅仅为一种逻辑功能划分，实际实现时可以有另外的划分方式，例如多个单元或组件可以结合或者可以集成到另一个系统，或一些特征可以忽略，或不执行。另一点，所显示或讨论的相互之间的耦合或直接耦合或通信连接可以是通过一些接口，装置或单元的间接耦合或通信连接，可以是电性，机械或其它的形式。
作为分离部件说明的单元可以是或者也可以不是物理上分开的，作为单元显示的部件可以是或者也可以不是物理单元，即可以位于一个地方，或者也可以分布到多个网络单元上。可以根据实际的需要选择其中的部分或者全部单元来实现本实施例方案的目的。
另外，在本申请各个实施例中的各功能单元可以集成在一个处理单元中，也可以是各个单元单独物理存在，也可以两个或两个以上单元集成在一个单元中。上述集成的单元既可以 采用硬件的形式实现，也可以采用软件功能单元的形式实现。
以上实施例仅用以说明本申请的技术方案，而非对其限制；尽管参照前述实施例对本申请进行了详细的说明，本领域的普通技术人员应当理解：其依然可以对前述各实施例所记载的技术方案进行修改，或者对其中部分技术特征进行等同替换；而这些修改或者替换，并不使相应技术方案的本质脱离本申请各实施例技术方案的精神和范围，均应包含在本申请的保护范围之内。

Claims (15)

  1. 一种在线供电充电系统，应用于工程机械车辆，其特征在于，包括：
    电机模块，被配置为控制所述工程机械车辆的作业过程；
    电池模块，被配置为接收或释放电能；
    车载充电机模块，与所述电机模块电连接，被配置为接入外部电源并向所述电机模块供电；
    开关模块，与所述电机模块、所述电池模块和所述车载充电机模块电连接，被配置为接通或断开所述电池模块与所述电机模块之间的电连接，以及接通或断开所述车载充电机模块与所述电池模块之间的电连接；
    电压变换模块，与所述开关模块、所述电机模块、所述电池模块和所述车载充电机模块电连接，被配置为对所述电池模块的输出电压进行电压变换后向所述电机模块供电，以及对所述电压变换模块的输入电压进行电压变换后向所述电池模块充电。
  2. 如权利要求1所述的在线供电充电系统，其特征在于，所述在线供电充电系统还包括：
    整车控制器，与所述电机模块、所述电池模块、所述车载充电机模块和所述开关模块电连接，被配置为控制所述电机模块的工作状态、控制所述电池模块的充放电过程、控制所述车载充电机模块接入外部电源以及控制所述开关模块的通、断状态。
  3. 如权利要求1所述的在线供电充电系统，其特征在于，所述电池模块包括：
    动力电池，与所述电压变换模块和所述开关模块电连接，被配置为存储电能；
    电池管理单元，与所述动力电池和所述电压变换模块电连接，被配置为控制所述动力电池的充放电过程以及控制所述电压变换模块对所述动力电池的输入电压或输出电压进行电压变换。
  4. 如权利要求1所述的在线供电充电系统，其特征在于，所述电机模块包括：
    电机，被配置为向所述工程机械车辆提供动力；
    电机控制器，与所述电机、所述车载充电机模块、所述电压变换模块和所述开关模块电连接，被配置为控制所述电机工作。
  5. 如权利要求1所述的在线供电充电系统，其特征在于，所述电压变换模块包括双向DC/DC变换器。
  6. 如权利要求1所述的在线供电充电系统，其特征在于，所述车载充电机模块包括直接接触式取电装置和非接触式取电装置。
  7. 如权利要求1所述的在线供电充电系统，其特征在于，所述电池模块的电池容量为 10～50KWh。
  8. 如权利要求1所述的在线供电充电系统，其特征在于，所述开关模块包括电磁继电器。
  9. 如权利要求1-8任一项所述的在线供电充电系统，其特征在于，所述工程机械车辆包括纯电动汽车。
  10. 一种在线供电充电系统的控制方法，其特征在于，应用于权利要求1-9任一项所述的在线供电充电系统，包括如下步骤：
    控制所述电压变换模块对所述电池模块的输出电压进行电压变换后向所述电机模块供电；
    或者，控制所述车载充电机模块向所述电机模块和所述电池模块供电，同时控制所述电压变换模块对所述电压变换模块的输入电压或所述电池模块的输出电压进行电压变换，以使所述电池模块充电或放电。
  11. 如权利要求10所述的控制方法，其特征在于，所述控制所述电压变换模块对所述电池模块的输出电压进行电压变换后向所述电机模块供电，包括：
    当断开所述车载充电机模块与所述电机模块和所述电压变换模块之间的电连接且当所述电池模块的输出电压小于所述电机模块的需求电压时，控制所述开关模块断开所述电池模块和所述电机模块之间的电连接，通过所述电压变换模块对所述电池模块的输出电压进行升压后向所述电机模块供电。
  12. 如权利要求10所述的控制方法，其特征在于，所述控制所述车载充电机模块向所述电机模块和所述电池模块供电，同时控制所述电压变换模块对所述电压变换模块的输入电压或所述电池模块的输出电压进行电压变换，以使所述电池模块充电或放电，包括：
    当接通所述车载充电机模块与所述电压变换模块和所述电机模块之间的电连接时，控制所述开关模块断开所述电池模块和所述电机模块之间的电连接，通过所述车载充电机模块向所述电压变换模块和所述电机模块供电，同时通过所述电压变换模块对所述电压变换模块的输入电压或所述电池模块的输出电压进行电压变换，以使所述电池模块充电或放电。
  13. 如权利要求10所述的控制方法，其特征在于，所述控制方法还包括：
    当断开所述开关模块且断开所述车载充电机模块与所述电压变换模块之间的电连接时，通过所述车载充电机模块向所述电机模块供电。
  14. 如权利要求10所述的控制方法，其特征在于，所述控制方法还包括：
    当断开所述车载充电机模块与所述电机模块和所述电压变换模块之间的电连接且所述电池模块的输出电压大于或等于所述电机模块的需求电压时，控制所述开关模块接通所 述电池模块和所述电机模块之间的电连接，通过所述电池模块向所述电机模块供电。
  15. 如权利要求10所述的控制方法，其特征在于，所述控制方法还包括：
    当所述电机正常停机时，控制所述开关模块接通所述车载充电机模块和所述电池模块之间的电连接，通过所述车载充电机模块向所述电池模块充电。
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JP2010202135A (ja) * 2009-03-05 2010-09-16 Sumitomo Heavy Ind Ltd 作業機械
CN203707843U (zh) * 2014-01-25 2014-07-09 广西电网公司电力科学研究院 复合型电动汽车电源管理系统
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