WO2020216016A1 - 一种储能充电系统 - Google Patents

一种储能充电系统 Download PDF

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Publication number
WO2020216016A1
WO2020216016A1 PCT/CN2020/082294 CN2020082294W WO2020216016A1 WO 2020216016 A1 WO2020216016 A1 WO 2020216016A1 CN 2020082294 W CN2020082294 W CN 2020082294W WO 2020216016 A1 WO2020216016 A1 WO 2020216016A1
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WO
WIPO (PCT)
Prior art keywords
energy storage
bus
conversion
power
load
Prior art date
Application number
PCT/CN2020/082294
Other languages
English (en)
French (fr)
Inventor
王渭渭
朱春辉
岳兴
Original Assignee
深圳英飞源技术有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 深圳英飞源技术有限公司 filed Critical 深圳英飞源技术有限公司
Priority to EP20795641.8A priority Critical patent/EP4007115A4/en
Publication of WO2020216016A1 publication Critical patent/WO2020216016A1/zh
Priority to US17/697,956 priority patent/US20220209545A1/en

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Classifications

    • 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
    • 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
    • B60L3/00—Electric devices on electrically-propelled vehicles for safety purposes; Monitoring operating variables, e.g. speed, deceleration or energy consumption
    • B60L3/0023—Detecting, eliminating, remedying or compensating for drive train abnormalities, e.g. failures within the drive train
    • B60L3/0069—Detecting, eliminating, remedying or compensating for drive train abnormalities, e.g. failures within the drive train relating to the isolation, e.g. ground fault or leak current
    • 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
    • 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
    • H02J7/0013—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries acting upon several batteries simultaneously or sequentially
    • 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
    • H02J7/02—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries for charging batteries from ac mains by 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
    • H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/34—Parallel operation in networks using both storage and other dc sources, e.g. providing buffering
    • H02J7/35—Parallel operation in networks using both storage and other dc sources, e.g. providing buffering with light sensitive cells
    • 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
    • H02J1/00—Circuit arrangements for dc mains or dc distribution networks
    • H02J1/10—Parallel operation of dc sources
    • H02J1/102—Parallel operation of dc sources being switching 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
    • Y02T10/80—Technologies aiming to reduce greenhouse gasses emissions common to all road transportation technologies
    • Y02T10/92—Energy efficient charging or discharging systems for batteries, ultracapacitors, supercapacitors or double-layer capacitors specially adapted for vehicles

Definitions

  • the invention relates to a charging system, in particular to an energy storage charging system.
  • the technical problem to be solved by the present invention is an energy storage charging system.
  • the energy storage device is isolated from the DC bus by a high-frequency transformer, and the energy storage device is restricted in the event of a short circuit. This effectively prevents the risk of accident expansion and effectively solves the problem in the prior art.
  • an energy storage charging system A: AC/DC conversion device including high-frequency isolation conversion and energy storage charging DC bus; the first connection point of the AC/DC device is connected to the energy storage device; the second connection point is connected to the AC grid, and the AC/DC device connects the grid power Charge the energy storage device after high-frequency isolation conversion;
  • DC/DC converter including high-frequency isolation conversion and load DC bus; the first connection point of the DC/DC device is connected to the energy storage charging DC bus; the second connection point is connected to the load DC bus, and the DC/DC device will be connected The electric energy of the energy storage device to the energy storage charging DC bus is transformed by high-frequency isolation to supply power to the load on the load DC bus;
  • AC/DC conversion device containing high-frequency isolation conversion and load power supply DC bus; the first connection point of the AC/DC device is connected to the AC grid; the second connection point is connected to the load DC bus, and the AC/DC device passes the grid power through Supply power to the load after high frequency isolation conversion;
  • the D Contains a device for charging electric vehicles or other types of loads.
  • the first connection point of the device is the DC bus of the load, and the second connection point is the charging port for electric vehicles or other types of loads.
  • the voltage is required by electric vehicles or other types of loads.
  • current dynamically adjust the bus voltage and the charging current of electric vehicles or other types of loads.
  • a DC/DC converter including high-frequency isolation conversion includes a first-level conversion, a high-frequency isolation transformer, and a second-level conversion.
  • the first-level conversion is connected to the energy storage charging bus, and the second-level conversion is connected to the load DC
  • the bus bar, the high-frequency isolation transformer connects the first-stage transformation and the second-stage transformation.
  • the DC electric energy of the energy storage unit is transformed into high-frequency electric energy through the first-stage conversion of the DCDC converter through the energy-storage DC bus, and transformed into high-frequency electric energy of different voltages through the conversion of the high-frequency isolation transformer.
  • the high-frequency electric energy is transformed into direct current through the second-stage conversion and output to the load direct current bus.
  • the electric energy on both sides of the high-frequency isolation transformer of the DCDC converter is isolated by the high-frequency isolation transformer, and the conductors on both sides are not directly conducted; the high-frequency electric energy is transmitted from one side to the other through electromagnetic induction.
  • the DC/DC conversion device includes a DC/DC conversion control unit.
  • the DC/DC control unit internally controls the first-level conversion, the second-level conversion, and the operation of the high-frequency isolation transformer, and has a communication bus externally to connect
  • the system main control unit communicates with the DC/DC conversion device through the system main control unit to control the discharge voltage, current and power of the energy storage device.
  • the energy storage DC bus includes a positive bus and a negative bus.
  • the positive and negative bus bars are respectively connected to one or more of the high-frequency isolation DC/DC converters, and at the same time are connected to the input and output access points.
  • the load charging bus and its devices discharge.
  • the energy storage device is connected to an ACDC conversion device to convert the AC grid electrical energy and store the electrical energy to the energy storage device through the energy storage DC bus.
  • the energy storage DC bus is connected to multiple energy storage devices, different types of energy storage devices or multiple identical energy storage devices are connected to the same energy storage DC bus for electrical energy storage and exchange.
  • the AC/DC conversion device including high-frequency isolation conversion includes a first-level conversion, a high-frequency isolation transformer, and a second-level conversion.
  • the first-level conversion is connected to the AC power grid
  • the second-level conversion is connected to the energy storage DC bus.
  • the high-frequency isolation transformer connects the first-stage transformation and the second-stage transformation.
  • the electric energy on both sides of the high-frequency isolation transformer is isolated by the high-frequency isolation transformer, and the conductors on both sides are not directly conducted; the high-frequency electric energy is transmitted from one side to the other through electromagnetic induction.
  • the AC/DC conversion device includes an AC/DC conversion control unit.
  • the AC/DC control unit internally controls the first-level conversion, the second-level conversion, and the operation of the high-frequency isolation transformer, and has a communication bus externally: communication
  • the bus is connected to the system main control unit, and the system main control unit communicates with the AC/DC conversion device to control the power conversion from the grid to the energy storage DC bus, so as to achieve the energy storage of the energy storage device.
  • the load power supply bus includes a positive bus and a negative bus.
  • the positive and negative bus bars are respectively connected to one or more of the high-frequency isolation AC/DC conversion devices, and the other side of the device is connected to the AC power grid.
  • the grid power is converted into DC power to supplement the load power supply bus.
  • the AC/DC device connected to the load power supply bus, the converted power is controlled by the main control unit of the system, and the main control unit of the system is based on the current charging demand of electric vehicles or other types of loads, the current power and cost of the grid , The current power demand of the remaining charging equipment in the grid and the characteristics of the energy storage device, according to the preset optimal control mode, control the conversion voltage, current and power.
  • the number of charging ports is one or more.
  • the power supply busbars of different loads connected to each charging port are used for power allocation and switching.
  • the system main control system is based on the power supply requirements of electric vehicles or other types of loads. Energy storage charging AC/DC, energy storage discharge DC/DC, load power supply ACDC control to achieve the voltage, current and power control of the load power supply bus.
  • the system main control is a single integrated integrated main control, or a distributed main control composed of a combination of multiple control units with a layered architecture.
  • the energy storage device of the present invention is isolated from the DC bus of the load power supply and the AC power grid by the high-frequency isolation transformer of the DCDC and ACDC conversion device, which limits the electrical energy passing through the transformer, thereby reducing the failure of the DC bus Electric current, to achieve the purpose of safety protection.
  • the load power supply DC bus and the AC grid are also supplemented by high-frequency isolated ACDC converters.
  • the load DC bus is directly connected to the charging interface of electric vehicles or other types of loads.
  • the system master is charged according to the current electric vehicles or other types of loads. Demand, energy storage status of energy storage device, status of AC grid, and optimal charging control.
  • Figure 1 is a schematic diagram of the overall structure of the present invention.
  • FIG. 2 is a schematic structural diagram of Embodiment 1 of the present invention.
  • Fig. 3 is a schematic structural diagram of the second embodiment of the present invention.
  • plural means at least two, such as two, three, etc., unless otherwise specifically defined.
  • the terms such as “upper”, “above”, “below”, “below” and the like used in the present invention to indicate a relative position in space are for the purpose of facilitating explanation to describe one unit or feature as shown in the drawings relative to another The relationship of a unit or feature.
  • the term of the relative position in space may be intended to include different orientations of the device in use or operation other than those shown in the figures. For example, if the device in the figure is turned over, the unit described as being “below” or “below” other units or features will be “above” the other units or features. Therefore, the exemplary term “below” can encompass both above and below orientations.
  • the device can be oriented in other ways (rotated by 90 degrees or other orientations), and the space-related descriptors used herein are explained accordingly.
  • the terms “set”, “socket”, “connection”, “through”, “plug” and other terms should be understood in a broad sense, for example, it may be a fixed connection, It can also be detachably connected or integrated; it can be mechanically connected or electrically connected; it can be directly connected or indirectly connected through an intermediate medium, which can be the internal communication of two components or the interaction of two components Relationship, unless otherwise clearly defined.
  • an intermediate medium which can be the internal communication of two components or the interaction of two components Relationship, unless otherwise clearly defined.
  • the DC/DC conversion device 14 including high-frequency isolation conversion and the energy storage DC bus 2; the first connection point of the DC/DC device is connected to the energy storage DC bus 2; the second connection The point is connected to the load DC bus 3, and the DC/DC device converts the electric energy of the energy storage devices 7, 8, 9 through high-frequency isolation and conversion, and then supplies power to the load DC bus 3.
  • the DC/DC conversion device 14 including high-frequency isolation conversion includes a first-level conversion 15, a high-frequency isolation transformer 16, and a second-level conversion 17, the first-level conversion 15 is connected to the energy storage device and the energy storage bus 2, and the second-level conversion 17 is connected to the load DC bus 3, and the high-frequency isolation transformer 16 is connected to the first-stage conversion 15 and the second-stage conversion 17.
  • the high-frequency isolation DC/DC conversion transforms the DC power of the energy storage unit into high-frequency power through the first-stage conversion, and transforms it into high-frequency power of different voltages through the conversion of the high-frequency isolation transformer. After the second stage of conversion, it becomes DC and output to the load DC bus;
  • the electric energy on both sides of the high-frequency isolation transformer 16 is isolated by the high-frequency isolation transformer, and the conductors on both sides are not directly connected; the high-frequency electric energy is transmitted from one side to the other through electromagnetic induction.
  • the DC/DC converter includes a DC/DC converter control unit 18,
  • the DC/DC control unit internally controls the operation of the first-stage conversion 15, the second-stage conversion 17, and the high-frequency isolation transformer 16, and has a communication bus 5 externally, and the communication bus 5 is connected to the main control 11 of the system.
  • the system master 11 obtains the energy storage information of the energy storage device 7/8/9 through the communication bus 10, and controls the DC/DC conversion device through the communication bus 5.
  • the control unit 18 of the DCDC conversion device is based on the communication bus 5 Communication with the main control of the system, while controlling the conversion power and voltage current of the DC/DC converter through the DC bus voltage information collected by the internal sampling circuit.
  • the energy storage DC bus 2 includes a positive bus and a negative bus.
  • the positive and negative bus bars are respectively connected to one or more of the high-frequency isolation DC/DC converters, and at the same time, they are connected to Other devices.
  • the energy storage devices 7, 8, 9 store externally input electrical energy through the DC input of the energy storage DC bus, or discharge electrical energy through the bus. During the input and output of electrical energy, the voltage and current of the electrical energy change.
  • the bus is connected to multiple energy storage devices, different types of energy storage devices or multiple identical energy storage devices, connected to the same energy storage DC bus for electrical energy exchange.
  • the transformed power size and direction are controlled by the main control unit of the system, and the system control unit is based on the current state and characteristics of the energy storage device, and the status of the AC power grid
  • the load state according to the preset optimal control mode, controls the conversion power and direction.
  • the AC power grid 1 converts AC power into DC power to the energy storage DC bus 2 through the high-frequency isolation AC/DC converter 12, and charges the energy storage device 7/8/9 on the bus.
  • the isolated AC/DC converter communicates with the main control of the system through the communication bus 5 and receives the control of the main control of the system.
  • the main control of the system controls according to the preset optimal control mode according to the current grid state, load state and energy storage device state Charging voltage and current for the energy storage device.
  • the load DC bus 3 is connected to the charging interface 4 for electric vehicles or other types of loads, and the charging demand voltage and current of the electric vehicles or other types of loads communicate with the system master through the bus 6, and the system master is through the electric vehicle or
  • the charging demand information of other types of loads through the optimal control of AC/DC and DC/DC, adjusts the DC bus voltage and current to meet the optimal use of electric energy and the charging requirements of electric vehicles or other types of loads.
  • the system main control 110 collects energy storage device information, electric vehicle or other types of load charging information through the communication bus, and combines the status of the AC grid and the power status of other charging systems in the network to control the AC/DC
  • the AC power of the conversion device 12 is obtained to charge the energy storage device, and the discharge power and voltage and current of the energy storage device are controlled by the DC/DC conversion device 14, and the AC power is obtained by controlling the AC/DC conversion device 13
  • a high-frequency isolation conversion energy storage charging system including high-frequency isolation conversion DC/DC conversion device 14, energy storage DC bus 2, energy storage battery pack 7/8/9, two-way charging AC /DC device 12, bidirectional load power supply AC/DC device 13, load DC bus 3, electric vehicle or other load interface 4, and system main control 11.
  • the high-frequency isolation conversion energy storage system includes multiple battery packs and an energy storage DC bus connected to the batteries.
  • the energy storage charging ACDC conversion device is connected to the AC power grid and the energy storage DC bus.
  • the energy of the multiple batteries is supplied to the load through DC/DC conversion, and the power grid charges the battery through the AC/DC conversion device.
  • the battery pack can also feed power to the grid in reverse through bidirectional ACDC.
  • the AC power grid simultaneously supplies power to the load through the bidirectional load power supply AC/DC conversion device, and can also feed back the load DC bus power back to the AC power grid.
  • This embodiment is applied to the power grid to supplement the energy of the battery and supply power to the load. It can also be used for energy storage devices to feed power to the grid in the reverse direction, or V2G applications to feed electric vehicle battery power to the power grid or reverse electric vehicle battery power to charge the energy storage battery.
  • the photovoltaic array A is connected to the energy storage DC bus through the MPPT maximum power tracking conversion device B, while the high-frequency isolation conversion device connects multiple battery packs to the load DC bus, while the load DC bus is connected to the electric vehicle Or other types of load charging ports to charge electric vehicles or other types of loads.
  • the above embodiment is a photovoltaic energy storage charging system.
  • the electrical energy can be supplemented by the photovoltaic array.
  • the energy storage DC bus is powered through the maximum power tracking, and then the load equipment is powered through the load DC bus. The excess energy is stored in the energy storage system. Battery. When there is no solar energy or solar energy is not enough, use AC power or battery pack to discharge to provide power to the load bus.

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Sustainable Energy (AREA)
  • Charge And Discharge Circuits For Batteries Or The Like (AREA)
  • Electric Propulsion And Braking For Vehicles (AREA)

Abstract

本发明公开了一种储能充电系统，包含从电网取电的高频隔离变换的负载供电用的AC/DC变换装置以及从电池放电给负载供电用的高频隔离变换的DC/DC变换装置。本发明通过充电ACDC转换为直流电能进行充电，同时也可以通过高频隔离的DCDC变换装置放电给到负载供电母线，同时还有与交流相连的ACDC将交流电能转换为直流电能到负载供电母线给负载供电。充电ACDC通过高频隔离变压器隔离，调节通过变压器的电能，从而调节直流母线对储能装置的充电电压和电流，供电DCDC通过高频隔离变压器隔离，调节通过变压器的电能，以及调节对负载供电母线的供电电压和电流，达到给电动车或其它类型负载充电的目的。

Description

一种储能充电系统 技术领域
本发明涉及一种充电系统，具体涉及一种储能充电系统。
 背景技术
一般电动车或其它类型负载充电系统从交流电网取电，但由于交流电网在功率提供上的限制，特别是单一箱变的容量有限，不可能接入超过其容量的充电系统。同时交流电网在不同时段的用电费用上存在差别，而电动车或其它类型负载充电又是一个随机性的用电，所以存在使用波峰电费，或无法满功率充电的情况。
同时在目前在使用的储能系统中，储能装置与直流母线连接时，存在一个短路保护的问题。也即当直流母线发生短路，或变换装置与直流母线连接一侧发生短路，储能装置的电能也通过回路释放到短路点，这就引发事故扩大的风险。传统的解决方法是在逆变系统的交流侧增加隔离变压器，由于频率较低，穿过变压器的电能仍然很大，而在直流母线，没有有效的方法限制储能装置释放的电能。
对具有冲击性特征的充放电应用，直接采用一种储能方式都有限制。例如作为能量回收的大电流充电，直接采用一种电池的成本或体积较大，解决方法是采用不同的储能方式组合，大倍率短时间储能采用超级电容或者大倍率储能电池，长时间储能采用一般锂离子电池结合，不能灵活进行能量转换。
 技术问题
本发明所要解决的技术问题是一种储能充电系统，储能装置与直流母线之间通过高频变压器隔离，短路时储能装置被限制，有效防范事故扩大的风险，有效解决现有技术中的诸多不足。
 技术解决方案
本发明是通过以下技术方案来实现的：一种储能充电系统， A:包含高频隔离变换的AC/DC变换装置以及储能充电直流母线；AC/DC装置第一连接点连接到储能装置；第二连接点连接到交流电网，AC/DC装置将电网电能经过高频隔离变换后对储能装置进行充电；
B: 包含高频隔离变换的DC/DC变换装置以及负载直流母线；DC/DC装置第一连接点连接到储能充电直流母线；第二连接点连接到负载直流母线，DC/DC装置将连接到储能充电直流母线的储能装置的电能过高频隔离变换后对负载直流母线上的负载进行供电；
C:包含高频隔离变换的AC/DC变换装置以及负载供电直流母线；AC/DC装置第一连接点连接到交流电网；第二连接点连接到负载直流母线，AC/DC装置将电网电能经过高频隔离变换后对负载进行供电；
D: 包含对电动车或其它类型负载进行充电的装置，该装置第一连接点为此负载直流母线，第二连接点为电动车或其它类型负载充电端口，根据电动车或其它类型负载需求电压和电流，动态调节该母线电压和电动车或其它类型负载的充电电流。
作为优选的技术方案，包含高频隔离变换的DC/DC变换装置包括第一级变换、高频隔离变压器、第二级变换，第一级变换连接储能充电母线，第二级变换连接负载直流母线，高频隔离变压器连接第一级变换和第二级变换。
作为优选的技术方案，储能单元的直流电能通过储能直流母线，经过DCDC变换装置的第一级变换变为高频电能，通过所述的高频隔离变压器的变换，变换为不同电压的高频电能，经过第二级变换变为直流，输出到负载直流母线。
作为优选的技术方案，DCDC变换装置高频隔离变压器两侧的电能通过高频隔离变压器隔离，两侧导电体不直接导通；高频电能通过电磁感应从一侧传输到另一侧。
作为优选的技术方案，DC/DC变换装置，包含DC/DC变换控制单元， DC/DC控制单元对内控制第一级变换、第二级变换、高频隔离变压器工作，对外具有通信总线，连接系统主控单元，通过系统主控单元与该DC/DC变换装置通信，来控制对储能装置的放电电压电流和功率。
作为优选的技术方案，储能直流母线包含正极母线和负极母线，正负极母线分别连接到一个或多个所述的高频隔离DC/DC变换装置，同时通过输入输出接入点，连接到负载充电母线及其装置进行放电。
作为优选的技术方案，储能装置通ACDC变换装置，转换交流电网电能并通过储能直流母线储存电能到储能装置，在电能的输入过程中，电能的电压和电流根据储能装置的需求进行变化；或者，储能直流母线连接多种储能装置，不同种类的储能装置或多个相同的储能装置，连接到同一个储能直流母线，进行电能存储和交换。
作为优选的技术方案，包含高频隔离变换的AC/DC变换装置包括第一级变换、高频隔离变压器、第二级变换，第一级变换连接交流电网，第二级变换连接储能直流母线，高频隔离变压器连接第一级变换和第二级变换。
作为优选的技术方案，高频隔离变压器两侧的电能通过高频隔离变压器隔离，两侧导电体不直接导通；高频电能通过电磁感应从一侧传输到另一侧。
作为优选的技术方案，AC/DC变换装置，包含AC/DC变换控制单元，AC/DC控制单元对内控制第一级变换、第二级变换、高频隔离变压器工作，对外具有通信总线：通信总线连接系统主控单元，通过系统主控单元与该AC/DC变换装置通信，来控制从电网对储能直流母线的电能转换，从而达到对储能装置的电能存储。
作为优选的技术方案，负载供电母线包含正极母线和负极母线，正负极母线分别连接到一个或多个所述的高频隔离AC/DC变换装置，该装置另一侧连接至交流电网，将电网电能变换为直流电能，补充该负载供电母线。
作为优选的技术方案，连接到负载供电母线的AC/DC装置，变换的功率接受系统主控单元控制，系统主控单元根据当前电动车或其它类型负载的充电需求、当前电网的功率及费用情况、当前电网内其余充电设备功率需求情况以及储能装置的特性，根据预先设定的最优的控制方式控制变换电压，电流及功率。
作为优选的技术方案，充电接口数量为一个或一个以上，每个充电口所连接的不同负载供电母线之间进行功率调配及切换，系统主控根据电动车或其它类型负载的供电需求，通过对储能充电AC/DC，储能放电DC/DC，负载供电ACDC的控制，来达到对负载供电母线的电压电流和功率控制。
作为优选的技术方案，系统主控是单一集成的一个集成式主控，或者是分层架构的多控制单元相结合构成的集散式主控。
 有益效果
本发明的有益效果是：本发明储能装置与负载供电直流母线和交流电网均经过高频隔离的DCDC和ACDC变换装置的高频隔离变压器隔离，限制通过变压器的电能，从而降低直流母线的故障电流，达到安全保护目的。同时负载供电直流母线与交流电网也通过高频隔离的ACDC变换装置进行电能补充，负载直流母线直接与电动车或其它类型负载充电接口相连接，系统主控根据当前的电动车或其它类型负载充电需求，储能装置的电能存储状态，交流电网的状态，进行最优的充电控制。
 附图说明
为了更清楚地说明本发明实施例或现有技术中的技术方案，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发明的一些实施例，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是本发明的整体结构示意图；
图2是本发明的实施例一的结构示意图；
图3是本发明的实施例二的结构示意图。
 本发明的实施方式
本说明书中公开的所有特征，或公开的所有方法或过程中的步骤，除了互相排斥的特征和/或步骤以外，均可以以任何方式组合。
本说明书（包括任何附加权利要求、摘要和附图）中公开的任一特征，除非特别叙述，均可被其他等效或具有类似目的的替代特征加以替换。即，除非特别叙述，每个特征只是一系列等效或类似特征中的一个例子而已。
在本发明的描述中，需要理解的是，术语“一端”、“另一端”、“外侧”、“上”、“内侧”、“水平”、“同轴”、“中央”、“端部”、“长度”、“外端”等指示的方位或位置关系为基于附图所示的方位或位置关系，仅是为了便于描述本发明和简化描述，而不是指示或暗示所指的装置或元件必须具有特定的方位、以特定的方位构造和操作，因此不能理解为对本发明的限制。
此外，在本发明的描述中，“多个”的含义是至少两个，例如两个，三个等，除非另有明确具体的限定。
本发明使用的例如“上”、“上方”、“下”、“下方”等表示空间相对位置的术语是出于便于说明的目的来描述如附图中所示的一个单元或特征相对于另一个单元或特征的关系。空间相对位置的术语可以旨在包括设备在使用或工作中除了图中所示方位以外的不同方位。例如，如果将图中的设备翻转，则被描述为位于其他单元或特征“下方”或“之下”的单元将位于其他单元或特征“上方”。因此，示例性术语“下方”可以囊括上方和下方这两种方位。设备可以以其他方式被定向（旋转90度或其他朝向），并相应地解释本文使用的与空间相关的描述语。
在本发明中，除非另有明确的规定和限定，术语“设置”、“套接”、“连接”、“贯穿”、“插接”等术语应做广义理解，例如，可以是固定连接，也可以是可拆卸连接，或成一体；可以是机械连接，也可以是电连接；可以是直接相连，也可以通过中间媒介间接相连，可以是两个元件内部的连通或两个元件的相互作用关系，除非另有明确的限定。对于本领域的普通技术人员而言，可以根据具体情况理解上述术语在本发明中的具体含义。
如图1所示，如图1所示，包含高频隔离变换的DC/DC变换装置14以及储能直流母线2；DC/DC装置第一连接点连接到储能直流母线2；第二连接点连接到负载直流母线3，DC/DC装置将储能装置7、8、9的电能经过高频隔离变换后对负载直流母线3进行负载供电。
包含高频隔离变换的DC/DC变换装置14包括第一级变换15、高频隔离变压器16、第二级变换17，第一级变换15连接储能装置及储能母线2，第二级变换17连接负载直流母线3，高频隔离变压器16连接第一级变换15和第二级变换17。
本实施例中，高频隔离DC/DC变换将储能单元的直流电能经过第一级变换变为高频电能，通过所述的高频隔离变压器的变换，变换为不同电压的高频电能，经过第二级变换变为直流，输出到负载直流母线；
本实施例中，高频隔离变压器16两侧的电能通过高频隔离变压器隔离，两侧导电体不直接导通；高频电能通过电磁感应从一侧传输到另一侧。
本实施例中，DC/DC变换装置，包含DC/DC变换装置控制单元18， DC/DC控制单元对内控制第一级变换15、第二级变换17、高频隔离变压器16工作，对外具有通信总线5，通信总线5连接系统主控11。
本实施例中，系统主控11通过通信总线10获取储能装置7/8/9的储能信息，并通过通信总线5来控制DC/DC变换装置，DCDC变换装置的控制单元18根据通信总线5与系统主控的通信，同时通过内部采样电路采集的所述直流母线电压信息，控制DC/DC变换装置的变换功率和电压电流。
本实施例中，储能直流母线2包含正极母线和负极母线，正负极母线分别连接到一个或多个所述的高频隔离DC/DC变换装置，同时通过输入输出接入点，连接到其它装置。
本实施例中，储能装置7、8，9通过储能直流母线的直流输入储存外界输入的电能，或者通过该母线放出电能，在电能的输入输出过程中，电能的电压和电流有所变化；或者，该母线连接多种储能装置，不同种类的储能装置或多个相同的储能装置，连接到同一个储能直流母线，进行电能交换。
本实施例中，连接到储能直流母线的所述的储能装置，变换的功率大小和方向接受系统主控单元控制，系统控制单元根据储能装置的当前状态和特性，交流电网的状态和负载状态，根据预先设定的最优的控制方式控制变换功率和方向。
本实施例中，交流电网1通过高频隔离AC/DC变换装置12，将交流电能转换为直流电能到储能直流母线2，给母线上的储能装置7/8/9进行充电，高频隔离AC/DC变换装置通过通信总线5与系统主控通信，接收系统主控的控制，系统主控根据当前电网状态，负载状态以及储能装置状态，按照预先设定的最优的控制方式控制给储能装置的充电电压和电流。
本实施例中，负载直流母线3与电动车或其它类型负载充电接口4相连接，电动车或其它类型负载的充电需求电压和电流通过总线6与系统主控通信，系统主控通过电动车或其它类型负载的充电需求信息，通过AC/DC和DC/DC的最优控制，调节直流母线电压和电流，满足最优的电能利用及电动车或其它类型负载的充电需求。
本实施例中，系统主控110通过通信总线采集到储能装置信息，电动车或其它类型负载充电信息，并结合交流电网的状态，以及网内其他充电系统的功率状态，通过控制AC/DC变换装置12的交流功率获取来进行储能装置的充电，以及通过DC/DC变换装置14来控制储能装置的放电功率大小和电压电流大小，同时通过控制AC/DC变换装置13的交流功率获取来进行负载的补充充电，并同步调节负载直流母线电压和电流，满足最优的电能利用及电动车或其它类型负载的充电需求。
实施方式1：
如附图2所示，一种高频隔离变换储能充电系统，含高频隔离变换的DC/DC变换装置14、储能直流母线2、储能电池组7/8/9、双向充电AC/DC装置12、双向负载供电AC/DC装置13、负载直流母线3、电动车或其它负载接口4以及系统主控11。
高频隔离变换储能系统包含多组电池组，和电池连接的储能直流母线。储能充电ACDC变换装置连接交流电网和储能直流母线。
多组电池的能量通过DC/DC变换向负载供电，同时电网通过所述的AC/DC变换装置给电池组充电。电池组也可以反向通过双向ACDC给电网馈电。
交流电网同时通过双向负载供电AC/DC变换装置同时给负载供电，也可反向将负载直流母线电能回馈到交流电网。
本实施方式应用于电网对电池进行能量补充及给负载供电应用。也可应用于储能装置反向给电网馈电，或是V2G应用，将电动车电池电能向电网馈电或将电动车电池电能反向向储能电池进行充电。
实施方式2：
如附图3所示，光伏阵列A通过MPPT最大功率跟踪变换装置B连接至储能直流母线，同时高频隔离变换装置将多组电池组接入负载直流母线，同时负载直流母线连接至电动车或其它类型负载充电口，给电动车或其它类型负载充电。
上述实施方式是一种光伏储能充电系统，电能可以通过光伏阵列来进行补充，通过最大功率跟踪给储能直流母线供电，再通过负载直流母线给负载设备供电，多余电能通过储能系统储存在电池组。当没有太阳能或太阳能不够时，再利用交流电或电池组放电，给负载母线提供电能。
以上所述，仅为本发明的具体实施方式，但本发明的保护范围并不局限于此，任何不经过创造性劳动想到的变化或替换，都应涵盖在本发明的保护范围之内。因此，本发明的保护范围应该以权利要求书所限定的保护范围为准。

Claims (14)

  1. 一种储能充电系统，其特征在于：
    A:包含高频隔离变换的AC/DC变换装置以及储能充电直流母线；AC/DC装置第一连接点连接到储能装置；第二连接点连接到交流电网，AC/DC装置将电网电能经过高频隔离变换后对储能装置进行充电；
    B: 包含高频隔离变换的DC/DC变换装置以及负载直流母线；DC/DC装置第一连接点连接到储能充电直流母线；第二连接点连接到负载直流母线，DC/DC装置将连接到储能充电直流母线的储能装置的电能过高频隔离变换后对负载直流母线上的负载进行供电；
    C:包含高频隔离变换的AC/DC变换装置以及负载供电直流母线；AC/DC装置第一连接点连接到交流电网；第二连接点连接到负载直流母线，AC/DC装置将电网电能经过高频隔离变换后对负载进行供电；
    D: 包含对电动车或其它类型负载进行充电的装置，该装置第一连接点为此负载直流母线，第二连接点为电动车或其它类型负载充电端口，根据电动车或其它类型负载需求电压和电流，动态调节该母线电压和电动车或其它类型负载的充电电流。
  2. 如权利要求1所述的储能充电系统，其特征在于：包含高频隔离变换的DC/DC变换装置包括第一级变换、高频隔离变压器、第二级变换，第一级变换连接储能充电母线，第二级变换连接负载直流母线，高频隔离变压器连接第一级变换和第二级变换。
  3. 如权利要求1所述的储能充电系统，其特征在于：储能单元的直流电能通过储能直流母线，经过DCDC变换装置的第一级变换变为高频电能，通过所述的高频隔离变压器的变换，变换为不同电压的高频电能，经过第二级变换变为直流，输出到负载直流母线。
  4. 如权利要求1所述的储能充电系统，其特征在于：DCDC变换装置高频隔离变压器两侧的电能通过高频隔离变压器隔离，两侧导电体不直接导通；高频电能通过电磁感应从一侧传输到另一侧。
  5. 如权利要求1所述的储能充电系统，其特征在于：DC/DC变换装置，包含DC/DC变换控制单元， DC/DC控制单元对内控制第一级变换、第二级变换、高频隔离变压器工作，对外具有通信总线，连接系统主控单元，通过系统主控单元与该DC/DC变换装置通信，来控制对储能装置的放电电压电流和功率。
  6. 如权利要求1所述的储能充电系统，其特征在于：储能直流母线包含正极母线和负极母线，正负极母线分别连接到一个或多个所述的高频隔离DC/DC变换装置，同时通过输入输出接入点，连接到负载充电母线及其装置进行放电。
  7. 如权利要求1所述的储能充电系统，其特征在于：储能装置通ACDC变换装置，转换交流电网电能并通过储能直流母线储存电能到储能装置，在电能的输入过程中，电能的电压和电流根据储能装置的需求进行变化；或者，储能直流母线连接多种储能装置，不同种类的储能装置或多个相同的储能装置，连接到同一个储能直流母线，进行电能存储和交换。
  8. 如权利要求1所述的储能充电系统，其特征在于：包含高频隔离变换的AC/DC变换装置包括第一级变换、高频隔离变压器、第二级变换，第一级变换连接交流电网，第二级变换连接储能直流母线，高频隔离变压器连接第一级变换和第二级变换。
  9. 如权利要求1所述的储能充电系统，其特征在于：高频隔离变压器两侧的电能通过高频隔离变压器隔离，两侧导电体不直接导通；高频电能通过电磁感应从一侧传输到另一侧。
  10. 如权利要求1所述的储能充电系统，其特征在于：AC/DC变换装置，包含AC/DC变换控制单元，AC/DC控制单元对内控制第一级变换、第二级变换、高频隔离变压器工作，对外具有通信总线：通信总线连接系统主控单元，通过系统主控单元与该AC/DC变换装置通信，来控制从电网对储能直流母线的电能转换，从而达到对储能装置的电能存储。
  11. 如权利要求1所述的储能充电系统，其特征在于：负载供电母线包含正极母线和负极母线，正负极母线分别连接到一个或多个所述的高频隔离AC/DC变换装置，该装置另一侧连接至交流电网，将电网电能变换为直流电能，补充该负载供电母线。
  12. 如权利要求1所述的储能充电系统，其特征在于：连接到负载供电母线的AC/DC装置，变换的功率接受系统主控单元控制，系统主控单元根据当前电动车或其它类型负载的充电需求、当前电网的功率及费用情况、当前电网内其余充电设备功率需求情况以及储能装置的特性，根据预先设定的最优的控制方式控制变换电压，电流及功率。
  13. 如权利要求1所述的储能充电系统，其特征在于：充电接口数量为一个或一个以上，每个充电口所连接的不同负载供电母线之间进行功率调配及切换，系统主控根据电动车或其它类型负载的供电需求，通过对储能充电AC/DC，储能放电DC/DC，负载供电ACDC的控制，来达到对负载供电母线的电压电流和功率控制。
  14. 如权利要求1所述的储能充电系统，其特征在于：系统主控是单一集成的一个集成式主控，或者是分层架构的多控制单元相结合构成的集散式主控。
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