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CN104205560A - 用于借助电网为至少一个电能存储单元充电的电路 - Google Patents

用于借助电网为至少一个电能存储单元充电的电路 Download PDF

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Publication number
CN104205560A
CN104205560A CN201380016451.8A CN201380016451A CN104205560A CN 104205560 A CN104205560 A CN 104205560A CN 201380016451 A CN201380016451 A CN 201380016451A CN 104205560 A CN104205560 A CN 104205560A
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China
Prior art keywords
circuit
rectifier
voltage
charging
storage unit
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Pending
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CN201380016451.8A
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C.劳平-威莱姆斯
T.程
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Valeo Systemes de Controle Moteur SAS
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Valeo Systemes de Controle Moteur SAS
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Publication of CN104205560A publication Critical patent/CN104205560A/zh
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    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02JCIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/02Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries for charging batteries from AC mains by converters
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60LPROPULSION 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
    • B60L1/00Supplying electric power to auxiliary equipment of vehicles
    • B60L1/02Supplying electric power to auxiliary equipment of vehicles to electric heating circuits
    • B60L1/04Supplying electric power to auxiliary equipment of vehicles to electric heating circuits fed by the power supply line
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60LPROPULSION 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
    • B60L3/00Electric devices on electrically-propelled vehicles for safety purposes; Monitoring operating variables, e.g. speed, deceleration or energy consumption
    • B60L3/0023Detecting, eliminating, remedying or compensating for drive train abnormalities, e.g. failures within the drive train
    • B60L3/003Detecting, eliminating, remedying or compensating for drive train abnormalities, e.g. failures within the drive train relating to inverters
    • BPERFORMING OPERATIONS; TRANSPORTING
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    • B60LPROPULSION 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
    • B60L3/00Electric devices on electrically-propelled vehicles for safety purposes; Monitoring operating variables, e.g. speed, deceleration or energy consumption
    • B60L3/0023Detecting, eliminating, remedying or compensating for drive train abnormalities, e.g. failures within the drive train
    • B60L3/0061Detecting, eliminating, remedying or compensating for drive train abnormalities, e.g. failures within the drive train relating to electrical machines
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60LPROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L50/00Electric propulsion with power supplied within the vehicle
    • B60L50/40Electric propulsion with power supplied within the vehicle using propulsion power supplied by capacitors
    • BPERFORMING OPERATIONS; TRANSPORTING
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    • B60L50/00Electric propulsion with power supplied within the vehicle
    • B60L50/50Electric propulsion with power supplied within the vehicle using propulsion power supplied by batteries or fuel cells
    • B60L50/60Electric propulsion with power supplied within the vehicle using propulsion power supplied by batteries or fuel cells using power supplied by batteries
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    • B60L53/00Methods of charging batteries, specially adapted for electric vehicles; Charging stations or on-board charging equipment therefor; Exchange of energy storage elements in electric vehicles
    • B60L53/10Methods 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 the energy transfer between the charging station and the vehicle
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    • BPERFORMING OPERATIONS; TRANSPORTING
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    • B60L53/12Inductive energy transfer
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    • B60LPROPULSION 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
    • B60L53/00Methods of charging batteries, specially adapted for electric vehicles; Charging stations or on-board charging equipment therefor; Exchange of energy storage elements in electric vehicles
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    • BPERFORMING OPERATIONS; TRANSPORTING
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    • B60L53/00Methods of charging batteries, specially adapted for electric vehicles; Charging stations or on-board charging equipment therefor; Exchange of energy storage elements in electric vehicles
    • B60L53/60Monitoring or controlling charging stations
    • B60L53/68Off-site monitoring or control, e.g. remote control
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02JCIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J50/00Circuit arrangements or systems for wireless supply or distribution of electric power
    • H02J50/10Circuit arrangements or systems for wireless supply or distribution of electric power using inductive coupling
    • H02J50/12Circuit arrangements or systems for wireless supply or distribution of electric power using inductive coupling of the resonant type
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02JCIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J50/00Circuit arrangements or systems for wireless supply or distribution of electric power
    • H02J50/80Circuit arrangements or systems for wireless supply or distribution of electric power involving the exchange of data, concerning supply or distribution of electric power, between transmitting devices and receiving devices
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02JCIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
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    • BPERFORMING OPERATIONS; TRANSPORTING
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    • B60L2210/00Converter types
    • B60L2210/10DC to DC converters
    • B60L2210/14Boost converters
    • BPERFORMING OPERATIONS; TRANSPORTING
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    • BPERFORMING OPERATIONS; TRANSPORTING
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    • B60L2240/00Control parameters of input or output; Target parameters
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    • B60L2240/36Temperature of vehicle components or parts
    • BPERFORMING OPERATIONS; TRANSPORTING
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    • BPERFORMING OPERATIONS; TRANSPORTING
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    • B60L53/20Methods 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
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    • HELECTRICITY
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    • HELECTRICITY
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    • H02J50/90Circuit arrangements or systems for wireless supply or distribution of electric power involving detection or optimisation of position, e.g. alignment
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    • YGENERAL 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
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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)
  • Computer Networks & Wireless Communication (AREA)
  • Charge And Discharge Circuits For Batteries Or The Like (AREA)
  • Current-Collector Devices For Electrically Propelled Vehicles (AREA)
  • Electric Propulsion And Braking For Vehicles (AREA)

Abstract

一种电路(5),用于借助电网为至少一个电能存储单元(4)充电,该电路(5)包括:感应元(6),配置用于与电网的感应元相互作用,以通过电磁感应交换能量;整流器(13),布置在感应元(6)的下游,且整流器的正输出端子(17)和负输出端子(20)每个连接到DC总线(19)的导体(18,21);电容器(22),安装在DC总线(19)的两个导体(18、21)之间;功率级(25),其正输入端子(26)和负输入端子(27)分别连接到DC总线(19)的导体(18,21)中的一个,且其配置用于使其正输入端子(26)与其负输入端子(27)之间的DC电压的值适于电能存储单元(4),该功率级包括最多两个电压转换器;和电能存储单元(4)。

Description

用于借助电网为至少一个电能存储单元充电的电路
技术领域
本发明涉及一种用于借助电网为至少一个电能存储单元充电的电路。
本发明特别地,但非排他地,应用于通过电磁感应进行的电能存储单元的充电。该电能存储单元能为驱动车辆的电马达提供动力。
背景技术
已知通过电磁感应为车辆电池充电的实践。图1显示了用于通过电磁感应充电的已知电路100。该电路100配置用于通过电磁感应从递送AC电压的电网101接收能量,其频率例如为50Hz或60Hz。为了通过电磁感应进行这种充电,网络101的电压通过整流器102整流,并随后通过逆变器103转换成频率大约等于140kHz的AC电压。逆变器103的输出电压随后为感应元104供电,在该情形下未天线,且该感应元104通过电网101进行供电产生电磁场。
电路100包括感应元105,例如线圈,且当该感应元105浸入感应元104产生的电磁场时,跨过感应元105的端子感应出频率基本等于140kHz的AC电压。该AC电压在施加到逆变器107之前通过整流器106整流,所述逆变器107将整流器106的输出电压转换为频率基本等于电网101的频率的AC电压。该电压随后(可选地在通过滤波器108之后)在传统充电电路109的输入端处被接收。该充电电路109通常配置为经由连接点连接到电网101。整流器106和逆变器107由此形成布置在传统有线充电电路109上游的附加级。
由此,现有技术的电路100目的是在车辆内重新产生电信号,该电信号具有与将通过电网101以有线方式传输的电信号相同的特征。
对于这种电路100,除了传统有线充电电路109的电压转换器之外,两个附加的电压转换器,即感应元105下游的整流器106和逆变器107必须载于车辆上。载于车辆上的该较高数量的转换器在成本和体积方面具有负面影响。此外,这些电压转换器的每一个可引起特定量的过热,且车辆中较高数量的电压转换器由此会带来在过热和因此在效率方面的问题。
存在解决上述缺陷中的一些或全部的需求。
发明内容
本发明的目的是实现该需求,且根据其一个方面,这通过使用借助电网为至少一个电能存储单元充电的电路实现,该电路包括:
-感应元,配置用于与电网的感应元相互作用,以通过电磁感应交换能量,
-整流器,布置在感应元的下游,且整流器的正输入端子和负输出端子每个连结到DC总线的一个导体,
-电容器,连接在DC总线的两个导体之间,
-功率级,其正输入端子和负输入端子分别连结到DC总线的导体中的一个,且其配置用于将其正输入端子与其负输入端子之间的DC电压的值匹配到电能存储单元,该功率级包括最多两个电压转换器,和
-电能存储单元。
根据上述电路,将跨过感应元的端子感应的AC电压转换为给电能存储单元供电的DC电压要求最多三个电压转换器,即整流器和功率级的最多两个电压转换器。
本发明的上述方面包括更改传统的有线充电单元和在电网和电能存储单元之间使用该更改的电路,而不同于参考图1所述的示例,该示例中要求在传统充电单元上游的附加级。
由此可以减少关于根据图1的电路的转换器的数量,在根据图1的电路中在感应元和电能存储单元之间要求至少四个电压转换器,这产生成本和/或体积和/或过热方面的益处。
在下文中,术语“电网”表示操作者管理的且在社区、地区或一个或多个州之间采用的工业电网,或本地和/或独立电网,特别是私人的。
电能存储单元例如是一个电池或并联或串联连接的多个电池、或串联电池的多个并联的臂,且该跨过电能存储单元的端子的名义电压可以为280V至350V,特别是330V的量阶。在一变形形式中,可以例如使用超级电容器。可以使用除了电池或超级电容器之外的元件。
感应元例如配置用于,当其承受100kHz至180kHz(特别是140kHz量阶)的频率的电磁场时,将在其端子之间产生的AC电压。该元可以是谐振器元。这种电磁场允许能量通过电磁感应传输,符合关于电磁兼容性和谐波污染的要求。
整流器可包括电子开关,该电子开关配置用于将AC电压整流,所述AC电压的频率为100kHz至200kHz的量阶,例如为140kHz。这些电子开关可以是可控的,特别地是晶体管,例如场效晶体管,或它们可以是不可控的,例如为二极管。这些开关可通过以等于将被整流的电压的频率的频率的自然切换而操作。当这些电子开关是可控的时,它们可以被控制为以等于要被整流的电压频率值两倍的频率切换。
跨过电容器端子的电压可等于功率级的输入端子之间的电压且等于整流器的输出端子之间的电压,即电容器可直接连结到整流器的输出端和功率级的输入端。
根据本发明的示例性实施例,功率级通过DC/DC电压转换器形成。在该示例中,仅两个电压转换器插置在感应元和电能存储单元之间。
根据本发明的另一示例性实施例,功率级通过附加的逆变器和附加的整流器的串联组合形成。在该示例中,三个电压转换器插置在感应元和电能存储单元之间。
在刚刚提及的本发明的两个示例性实施例中,功率级的电压转换器(一个或多个)可包括可控电子开关,例如晶体管,特别是场效晶体管。
该电路可以专用于通过电磁感应为电能存储单元充电。
由于电子开关的切换频率的高数值,可以提供散热器件。例如,这样的器件意味着允许通过自然或强迫对流进行冷却。可以使用空气或水冷热沉,比如热交换器。
本发明还覆盖这样的情形:充电电路配置用于允许电能存储单元通过电磁感应或借助有线连接点充电,即根据不同的充电模式充电。
在该情形中,电路可包括与感应元并联连接的连接器,其在整流器上游,所述连接器配置用于连接到电网中的互补类型的连接器。
整流器的电子开关则可配置用于将AC电压整流,所述AC电压的频率为50Hz或60Hz的量阶。该电子开关随后可以通过以等于将被整流的电压的频率的频率的自然切换而操作。当该电子开关是可控的时,它们可以被控制为以等于要被整流的电压的频率值的至少两倍的频率切换。
整流器(其在该情形中还负责将跨过感应元的端子感应出的电压整流)的这些开关则可具有用于50Hz至360kHz之间的切换频率的操作范围,该切换频率值范围允许电子开关提供对于具有140 kHz量阶频率的AC信号与对于具有50Hz或60Hz量阶频率的AC信号一样令人满意的整流。根据该示例,传统有线充电电路的一般性结构被保留,但是该电路的一些部件被修改,例如电容器上游的整流器的电子开关。
在一变形形式中,使用配置为连接到所述电网且连接到低频整流器的连接器,实现了电路还提供从电网的有线充电的可能性,所述连接器连接到低频整流器的输入端,且低频整流器的输出端与感应元下游的整流器的输出端并联,感应元下游的整流器则称为高频率整流器。
低频整流器可包括电子开关,该电子开关配置用于将整流频率为50Hz或60Hz的量阶的电压。
在该变形形式中,两个整流器在电容器上游并联连接:高频率整流器,其电子开关被选择为将具有特别为100kHz至180kHz的频率的电压整流;和低频整流器,其电子开关被选择为将具有例如为50Hz或60Hz的量阶的频率的电压整流。
但是,术语“高频”和“低频”不必须每一个限于上述频率值。
低频整流器的开关的控制可被执行为提供称为“功率因子校正”(PFC)的功能。
在该变形形式中,每个整流器匹配到其必须整流的电压,且每个整流器可以以最佳方式工作。传统充电电路的部件则不被修改,但是专用于通过电磁感应进行充电的部分随后被增加到传统有线充电单元。
电路可包括充电模式选择单元,其配置用于检测连接器和感应元的哪一个从电网接收能量,并用于将连接器或感应元中被供能的那一个连结到电路的其余部分,以从电网为电能存储单元充电。该充电模式选择单元可以远离用于充电的电路的其余部分。
该电路可包括用于电路的电子开关的控制单元。该控制单元可以确保电能存储单元正在接收适当值的电压。控制单元可例如控制功率级和/或整流器中的一个的电子开关,以执行充电。可选地,电子开关的该控制可根据电池的充电状态而被执行。
电网可以是多相网,特别是三相网,或可以是单相网。
根据本发明的另一方面,其另一目的是一种借助电网为至少一个电能存储单元充电的电路,该电路包括:
-感应元,配置用于与电网的感应元相互作用,以通过电磁感应交换能量;和高频率整流器,布置在感应元的下游,且该高频率整流器的正输出端子和负输出端子每个连结到DC总线的一个导体,
-连接器,配置用于连接到电网的附加连接器和布置在所述连接器下游的低频整流器,其正输出端子连结到高频率整流器的正输出端子,且其负输出端子连结到高频率整流器的负输出端子,
-电容器,连接在DC总线的两个导体之间,
-功率级,其正输入端子和负输入端子分别连结到DC总线的导体中的一个,且其配置用于将其正输入端子与其负输入端子之间的DC电压的值匹配到电能存储单元,和
-电能存储单元。
根据本发明的另一方面,本发明的另一目的是一种方法,该方法用于借助电网使用包括如上所述的充电模式选择单元的电路为电能存储单元充电,在该方法中:
-检测感应元和连接器中由网络供能的那一个,和
-感应元和连接器中由网络供能的那一个被连结到电路的其余部分,所述电路的电子开关被控制为从电网为电能存储单元充电。
根据本发明的一个方面,本发明的另一主题是一种用于借助充电站识别车辆的方法,该充电站包括:
-感应元,和
-用于交换数据的系统,
所述车辆包括:
-电能存储单元,
-感应元,配置用于与充电站的感应元相互作用,以通过电磁感应交换能量,和
-用于交换数据的系统,
在该方法中,在通过电磁感应在所述感应元之间交换能量之前,数据交换在站与车辆之间进行,以识别车辆。
在该数据交换结束后,车辆的电能存储单元的充电可被授权。
在数据交换时,车辆或车辆用户的识别符可被发送到充电站,且根据该识别符,通过电磁感应通过充电站进行的能量输送(其用来为电能存储单元充电)可被授权。
被交换的信息还可以涉及电能存储单元的电荷水平和/或该能量存储单元的名义电压,从而该交换使得可以确定充电站必须输送到电能存储单元的能量吞吐量。
车辆与充电站之间的数据交换可经由无线电频率进行,RFID技术特别地实施在充电站的和车辆的交换系统中。
由此,被交换的数据使得可以将充电站与车辆之间的能量交换和/或该充电的记账(billing)自动化。
除了车辆与充电站之间的数据交换之外,数据交换可发生在充电站与车辆或用户的计算机终端之间。该数据的交换可借助无线电频率或使用通信网络,特别是电话或因特网进行。该数据可适于正在进行中的车辆的充电,并指示以下信息项中的至少一个:电能存储单元的电荷水平、剩余充电时间、作为电荷水平的函数的以km计的车辆自主权(autonomy)、或已经进行的充电的成本。
在通过电磁感应进行的电能存储单元的充电过程中,其他信息可以在计算机终端与充电站之间被交换,例如关于对用来为电能存储单元充电的能量记账的信息。
还在通过电磁感应进行充电的过程中,计算机终端可与车辆通信以便激活该车辆的部件的预处理功能,例如激活用于将窗户除冰、加热座椅、加热发动机或对乘客厢进行空调的系统。
根据本发明的另一方面,本发明的另一主题是一种用于辅助车辆相对于电能充电站定位的方法,车辆包括用于通过电磁感应为电能存储单元充电的电路,所述电路包括感应元,其配置用于与所述站的感应元相互作用,以通过电磁感应交换能量,
在该方法中,车辆的用户被提供有表示电路的感应元相对于充电站的感应元的位置的信息项。
表示电路的感应元相对于充电站的感应元的位置的信息项可以是电路的感应元相对于充电站感应元的所述位置,或反映所述位置的信息项。
反映所述位置的信息项可以是从电网到车辆的能量传输的效率的水平。其可以例如是跨过电路感应元的端子的电压值与跨过充电站感应元的端子的电压值的比值。该比值(其从感应元相对于彼此的位置获得)允许车辆的用户以所述比值具有最大值的方式移动车辆,所述最大值对应于车辆相对于站的最优位置。
在变形形式中,反映所述位置的信息项可以是二维地图,其描绘电路的感应元、充电站的感应元、和充电站感应元周围的、电路感应元可恢复电能的区域。可选地,多个不同的区域可描绘在该地图上,上述比值的值范围例如与这些区域的每一个相关联。
当车辆在充电站附近停放以便通过电磁感应为电能存储单元充电时,表示电路的感应元相对于充电站的感应元的位置的该信息项还可以由允许车辆自动停放的系统使用。
在变形形式中,车辆可配备有GPS类型的系统,且再充电站的坐标可输入或提前存储在该系统中。表示电路的感应元相对于站的感应元的位置的信息项则可以GPS类型的系统所提供的导航数据的形式呈现。
根据上述方法,表示电路的感应元相对于充电站的感应元的位置的信息项可以是视觉或听觉数据项。
附图说明
基于阅读以下非限制性实施例的描述以及基于查看附图将更好地理解本发明,在附图中,
图1已经被描述,其示出了现有技术的用于为车辆充电的电路和充电站的电气结构,
图2示意性地示出了充电站和车辆,所述车辆包括根据本发明的示例性实施例的用于充电的电路,
图3以类似于图1的方式示出了充电站以及根据本发明示例性实施例的用于充电的电路的一部分的电气结构的示例,
图4示意性地示出了图3中的用于充电的电路,
图5对应于图3,其中根据本发明的用于充电的电路的示例的整体被示出,
图6和7示出了图5中的电路的两个变形形式,其每个允许通过电磁感应有线充电进行充电,
图8示出了可并入到图6中所示电路内的充电模式选择单元的示例,和
图9示出了图8中的引导单元的架构的示例。
具体实施方式
图2示出了与电网2的充电站3相互作用的车辆1,所述电网2用于借助充电电路5为电能存储单元4充电。电网2分配特别是具有50Hz或60Hz频率的单相或多相(例如三相)AC电压。
电能存储单元4例如由并联或串联的一个或多个电池形成,或通过多个并联的、具有串联连接的电池的臂形成。电能存储单元4具有例如280V至350V(特别是330V量阶)的名义电压,且其用来为用于驱动混合动力或电动车辆的电马达供电。
充电电路5包括感应元6,其配置用于在其置于电磁场中时产生AC电压。在所考虑的示例中,感应元6是线圈。该感应元6与再充电站3的感应元8相互作用。如图3所示,充电站3的电气结构可类似于图1中所示的电气结构,即,其可包括整流器10和逆变器11,所述整流器将网2的电压转换为DC电压,所述逆变器11将DC电压转换为具有例如100kHz至180kHz频率的(例如为140kHz量阶)AC电压。这种频率值可通过电磁感应匹配到能量的传输。用于该传输能量的电磁波由感应元8产生,所述感应元8例如为天线。
如通过对比图1和3可看出的,本发明的其中一个方面包括,调试传统的有线充电电路109,以直接在感应元6的输出端使用该有线充电电路,而不需要由整流器106和逆变器107形成的附加级。
图4示意性示出了用于从电网2为电能存储单元4充电的充电电路5的示例。
如图所示,跨过在感应元6的端子感应出的电压被施加到包括电子开关15的整流器13。在所描述的示例中,这些开关15是二极管,但在未示出的变形形式中,可控开关可用于整流器13。这些电子开关15被配置用于将施加到整流器13的电压整流,所述电压的频率可以为100kHz至180kHz。可选地,电容器16可插置在感应元6和整流器13之间。电容器16特别地使得可以执行感应元6与整流器13的输入端之间的阻抗匹配,以便确保谐振时的操作。
整流器13的正端子17连结到DC总线19的第一导体18,而整流器13的负端子20连结到DC总线19的第二导体21。
电容器22连接在第一导体18和第二导体21之间,且该电容器22可具有1500μF至2500μF的电容。在所示示例中,电容器22与整流器13的输出端和功率级25的输入端并联连接。该功率级25包括最多两个电压转换器,且其配置用于将跨过电容器22的端子的DC电压的值匹配到电能存储单元4。
功率级25可具有连结到DC总线19的导体18的正输入端子26和连结到DC总线19的导体21的负输入端子27。
功率级25可以通过DC/DC电压转换器形成。其可以例如是串联斩波器或并联斩波器(还分别称为降压转换器和升压转换器)。
在变形形式中,且如图5所示,功率级25可包括转换器28,转换器28的输出端形成整流器29的输入端。在该情形中,用于为电能存储单元4充电的电路3包括三个电压转换器,而在功率级25由DC/DC电压转换器形成的情形中其仅包括两个。
在图3至5的示例中,充电电路5仅允许通过电磁感应进行电能存储单元4的充电。然而,本发明不限于这些示例,而能够使得可以在两种充电模式之间切换,两种充电模式即通过电磁感应进行的充电和有线充电,如将看到的。
在所考虑的所有示例中,电压转换器的电子开关的引导可通过引导单元(未示出)提供,所述引导单元包括例如一个或多个微控制器。
在图6的示例中,充电模式选择单元33布置在整流器13的上游,使得整流器13的输入对应于单元33的输出34。如图8中可见的,充电模式选择单元33包括连结到感应元6的输入端35、和连结到连接器的输入端36,所述连接器例如为连接点,配置用于连接到电网2的附加的连接器,例如插头,以提供电能存储单元4的有线充电。接地导体39可旁通充电模式选择单元33,如图8所示。
充电模式选择单元33可由车辆1的车载网络40供电,所述车载网络递送例如12V量阶的电压,该电压用作用于单元33的功率供应和控制供应。单元33的详细示例性实施例在图9中图解。
如图所示,充电模式选择单元33可包括多个元件(cell)42。元件42可以是成对的,同一对43的两个元件连结到充电模式选择单元33的同一输出端,而该对43的元件中的一个的输入端连结到感应元6,而所述对的元件中的另一个的输入端连结到连接器。
每个元件42可包括两个电导线46和47,每个在分别形成元件42的输入端和输出端的两个端部之间延伸。开关48可布置在每个电线的端部之间。每个元件42还包括线圈49,当其被供电时,该线圈改变元件的开关48的位置。每个元件42可由此形成机电继电器并传递至少32A的电流。
充电模式选择单元33还包括并联连接的两个主元件50。这些主元件50中的一个控制到其导线46和47连结到感应元6的所有线圈49的供电,而另一个主元件50控制到其导线46和47连结到连接器的元件42的所有线圈49的供电。
在所示示例中,每个主元件50还包括插置在车载网络40和每个元件42的线圈49之间的开关51。在该示例中,每个主元件50还包括线圈53,其可根据选择被车载网络40供电。当主元件50的线圈53被供电时,其将开关51从所述元件移动,所述开关根据其位置而使得能够或不能够向所述开关下游的所有线圈49提供功率。
不论充电模式选择单元33是否如图9中所示那样被生产,其可具有以下性质:
-不切换在图8中可见且连结到连接器的接地导体39,
-引入用来从一个充电模式行进至另一个的等待时间,例如为几秒的量阶,
-当车辆被停放且没有进行中的充电时,减少电能存储单元4的自放电现象,
-保护电网2。
在图6所示的示例中,整流器13配置用于将具有100kHz至180kHz频率的AC电压整流,或将具有例如50Hz或60Hz频率的AC电压整流。为了能够令人满意地操作将被整流的AC电压的频率的任何值,当电子开关15是二极管时,在自然切换的情形中,整流器13的开关可以以在从50Hz扩展到180kHz的值范围内的任何频率切换。
当电子开关15是可控的时,它们可以以这样的方式受控:根据它们是否将50或60Hz的电压或例如140kHz的电压整流,以在例如从100Hz扩展到360kHz的值范围内的任何频率切换。可用来这样做的电子开关的示例是公司生产的IRF 150 N-channel MOSFET晶体管的串联或并联组合。
根据电能存储单元的充电模式,引导单元(未示出)可控制电路5的电子开关,例如功率级25的电子开关,以使得提供具有匹配到电能存储单元4的值的DC电压。
在图7中所示的变形形式中,电路5包括专用于有线充电的附加级30,该级30包括连接器(未示出),例如为连接点,其类似于参考图6和整流器31所描述的。该整流器31配置用于将被电网2经由连接器传送的AC电压(即频率例如为50Hz或60Hz量阶的信号)整流。在该示例中,整流器13可称为“高频率整流器”,而整流器31可称为“低频整流器”,而这没有严格地限制被每个整流器整流的信号的频率范围的值。
在该变形形式中,每个整流器由此专用于一个充电模式。充电模式选择单元可被设置为激活整流器13或31,由于通过电网2供电,电压在所述整流器的输入端处被施加。整流器13或31各自的输入端61或62可以是该充电模式选择单元的输出端。
根据上述所有示例的电路5可具有与用于图1中传统有线充电的电路109相同的能量性能,尽管其具有不同的操作站。该电路可确保电网2上的总谐波失真。该电路5能够使得可以在大约6小时的充电过程中将3.5kW量阶的功率传送到电能存储单元4。
本发明不限于刚刚已经描述的示例。
表述“包括”必须理解为是表达“包括至少一个”的同义语,除非被限定为相反情况。

Claims (14)

1.一种电路(5),用于借助电网(2)为至少一个电能存储单元(4)充电,该电路(5)包括:
感应元(6),配置用于与电网(2)的感应元(8)相互作用,以通过电磁感应交换能量,
整流器(13),布置在感应元(6)的下游,且整流器的正输出端子(17)和负输出端子(20)每个连结到DC总线(19)的导体(18,21)中的一个,
电容器(22),连接在DC总线(19)的两个导体(18、21)之间,
功率级(25),其正输入端子(26)和负输入端子(27)分别连结到DC总线(19)的导体(18,21)中的一个,且其配置用于将其正输入端子(26)与其负输入端子(27)之间的DC电压的值匹配到电能存储单元(4),该功率级包括最多两个电压转换器(28,29),和
电能存储单元(4)。
2.如权利要求1所述的电路,整流器(13)包括配置用于将AC电压整流的电子开关(15),其频率为100kHz至200kHz。
3.如权利要求1或2所述的电路,跨过电容器(22)的端子的电压等于功率级(25)的输入端子(26,27)之间的电压,且等于整流器(13)的输出端子(17,20)之间的电压。
4.如前述权利要求中任一项所述的电路,电能存储单元(4)具有280V至350V的名义电压,特别是330V的名义电压。
5.如前述权利要求中任一项所述的电路,功率级(25)是DC/DC电压转换器。
6.如权利要求1至4中任一项所述的电路,功率级(25)通过附加的逆变器(28)和附加的整流器(29)的串联组合形成。
7.如权利要求1至6中任一项所述的电路,包括与整流器(13)的上游的感应元(6)并联连接的连接器,所述连接器配置用于连接到电网(2)的附加的连接器。
8.如权利要求7所述的电路,整流器(13)的电子开关(15)配置用于将AC电压整流,所述AC电压的频率为50Hz或60Hz的量阶。
9.如权利要求1至6中任一项所述的电路,包括连接器和另一整流器(31),连接器连接到该另一整流器(31)的输入端,该另一整流器(31)的输出端与位于感应元(6)的下游的整流器(13)的输出端并联连接。
10.如权利要求9所述的电路,另一整流器(31)包括电子开关,该电子开关配置用于整流频率为50Hz或60Hz的量阶的电压。
11.如权利要求7至10中任一项所述的电路,包括充电模式选择单元(33),其配置用于检测连接器和感应元(6)中的哪一个从电网(2)接收能量,并用于将所述连接器或所述感应元(6)中被供能的那一个连结到电路(5)的其余部分,以从电路(2)为电能存储单元(4)充电。
12.一种用于借助电网(2)使用电路(5)为电能存储单元(4)充电的方法,所述电路(5)包括如权利要求11所述的充电模式选择单元(33),在该方法中:
检测感应元(6)和连接器中由电网(2)供能的那一个,和
感应元(6)和连接器中由电网(2)供能的那一个被连结到电路(5)的其余部分,所述电路(5)的电子开关被控制为从电网(2)为电能存储单元(4)充电。
13.一种用于借助充电站(3)识别车辆(1)的方法,该充电站(3)包括:
感应元(8),和
用于交换数据的系统,
所述车辆(1)包括:
电能存储单元(4)。
感应元(6),配置用于与充电站(3)的感应元(8)相互作用,以通过电磁感应交换能量,和
用于交换数据的系统,
在该方法中,在通过所述感应元(6,8)之间的电磁感应交换能量之前,数据交换在站(3)与车辆(1)之间进行,以识别车辆。
14.一种用于辅助车辆(1)关于充电站(3)定位的方法,车辆(1)包括用于通过电磁感应为电能存储单元(4)充电的电路(5),所述电路(5)包括感应元(6),感应元(6)配置用于与所述站(3)的感应元(8)相互作用,以通过电磁感应交换能量,
在该方法中,车辆(1)的用户被提供有表示电路(5)的感应元(6)相对于充电站(3)的感应元(8)的位置的信息项。
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Application publication date: 20141210