CN107112748A - 用于车辆蓄能器的充电的方法和布置 - Google Patents
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- 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
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- 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
- B60L53/10—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 the energy transfer between the charging station and the vehicle
- B60L53/11—DC charging controlled by the charging station, e.g. mode 4
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- 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
- B60L53/10—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 the energy transfer between the charging station and the vehicle
- B60L53/14—Conductive energy transfer
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- 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
- B60L53/10—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 the energy transfer between the charging station and the vehicle
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- 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
- B60L53/30—Constructional details of charging stations
- B60L53/302—Cooling of charging equipment
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- 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
- B60L53/50—Charging stations characterised by energy-storage or power-generation means
- B60L53/53—Batteries
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- 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
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- H02J7/022—
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- H—ELECTRICITY
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- 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
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- 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]
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- 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
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- 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
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- 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
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Abstract
本发明的目的是一种充电装置,该充电装置用于从电能源(101)对车辆的蓄能器(103)充电,该充电装置被集成到车辆中。该充电装置包括可连接到电能源(101)的可用相的至少两个电力单元(104),电力单元(104)包括:操作电力单元(104)的、开关模式技术的至少部分相同种类的电力电子器件(100),以及用于冷却所述电力电子器件(100)的装置(102)。
Description
技术领域
使用电能来移动的车辆作为环保车辆技术而变得越来越常用。
背景技术
电动车辆(例如,汽车)的现有技术充电过程的主要挑战涉及,常限于100km至200km的工作范围,和将车辆蓄能器实质上完全充电的3至12个小时的长充电时间。在现有技术实施方式中,尝试由通常在家庭内可用的大电网接口(诸如公用电源三相接口)来缩短长充电时间。尽管如此,对于家庭、办公室或公用充电站处的充电,存在仅缓慢单相选择可用。在现有技术实施方式中,还尝试由高加载功率电平来缩短充电时间。这些实施方式遭受高温问题,甚至着火风险存在。
在现有技术实施方式中,在电网(即,电网络)从操作丢失一个或更多个相时,出现严重种类的故障。通常,传统三相装置必须识别问题状况,关闭并且在故障的时段期间使自己与网络断开,并且一旦已经去除故障,则恢复操作。在电网故障期间,装置无法使用,并且充电时间甚至按与故障的长度1:1的比延长(例如,一小时故障引起充电时间的一小时延长)。上述电网的故障还可能损坏传统的三相装置,甚至引起火灾。
在专利申请文献EP2657063A1中,提出了一种具有导电且感应的能量传输接口的充电装置,这些能量传输接口借助电力路径连接到能量存储侧终端。EP2657063A1的实施方式使用显著引起功率损耗的数个变压级。
发明内容
本发明的目的是,实现车辆蓄能器的改进充电,可以从不同种类的电能源快速且可靠地执行该充电。这可以由一种充电装置来实现,该充电装置用于从电能源对车辆的蓄能器充电,该充电装置被集成到车辆中。该充电装置包括至少两个电力单元,所述至少两个电力单元可连接到电能源的可用相,电力单元包括:操作电力单元的、开关模式技术的至少部分相同种类的电力电子器件,以及用于冷却所述电力电子器件的装置。
本发明基于使用包括操作可连接到电能源的可用相的至少两个电力单元的开关模式技术的至少部分相同的电力电子器件,并且基于使用用于冷却所述电力电子器件的装置。
根据本发明的实施方式提供对车辆蓄能器充电的技术上可靠且能量高效的解决方案,该解决方案产生实质上缩短的充电时间,且产生使用使得电力可用的最佳充电电源的可能性。还可以凭借使用比现有技术充电装置中更少的材料,来小尺寸且轻量化地建造根据本发明的充电装置。
附图说明
图1呈现了根据本发明的示例性充电装置结构。
图2呈现了根据本发明的示例性电力单元结构。
具体实施方式
在根据本发明的实施方式中,充电装置可以被集成到车辆中(例如,集成到电动汽车或混合动力汽车或某一其他电动或混合动力车辆中)。在本发明中,使用能量高效开关模式(energy-efficient switched-mode)技术来实现贯穿功率范围充电的高效率(即,即使加载过程可能快速,温度水平也不上升太高)。这些高效电力电子器件部件启用以下内容:因为仅少量地产生废热,所以充电装置可以紧凑地组装到电动汽车中。由于更小的功率损耗(即,废热),所以可以使用更小的冷却元件。因此,充电装置可以通过使用更少材料来更小且更轻地建造。
在将来,诸如连接到电网的电子器件这样的装置和由于电动汽车的充电而产生的无功负载(reactive load)对电网及其稳定性造成损失。电网络故障随着电动装置的种类增加而增加。电网的稳定性是首要的安全因素,并且使得我们的社会有效地起作用。具体地,无功功率被预测为在将来由于从电网(即,从电网络)充电的越来越多的电动汽车而引起问题。在根据本发明的实施方式中将这一点考虑在内,这即使在电网中故障或装置本身中故障的情况下,也提供良好的可靠性。退出的一个或更多个相将不引起任何危险的状况,并且充电装置将继续以减小的输出来操作。当更有电力的三相充电不可用时,由于充电装置输出侧的并联连接,还可以在不降低效率的情况下执行单相充电。由此,在根据本发明的实施方式中,不需要额外的电力单元来执行单相充电,这显著减少所需部件的数量并降低制造成本。
在图1中,呈现了根据本发明的示例性充电装置。充电装置被组装到车辆(即,电动汽车)中,并且它从电能源101对电动汽车的蓄能器103(即,可充电电池、蓄电包、电源组)充电,该电能源最经常为电网络。充电装置包括可连接到电能源101的可用相的至少两个电力单元104。电力单元104包括:操作电力单元104的、开关模式技术的至少部分相同种类的电力电子器件100;和用于冷却所述电力电子器件100的装置102。开关模式技术的电力电子器件100可以包括:例如斩波电路电子器件,或某一其他开关模式电子器件。
为了实现用于高压电池的更高充电电压,各电力单元的输出侧可以并联或串联连接。当串联连接输出时,为了避免可能的击穿,人必须注意电力单元的绝缘特性,以耐受电压。串联连接提供与上述相同的充电功率和无功功率的补偿,但丢失并联连接的一些优点。当仅存在单相连接可用时,电力单元的所有输入必须用合适的插座或用接触器或用开关而并联连接到同一相。在单相状况下,为了不使网络接口超载,必须减小充电电流,以适应电源连接。在根据本发明的实施方式中,可以用所用插头的识别来自动或由用户在充电站中确定充电电流(即,充电功率)。
在本发明的优选实施方式中,充电装置包括可以连接到电能源101的三个相的三个相同种类的电力单元104,各电力单元104连接到其相应的相。电力单元104例如可以在功率特性上不同,但在本发明的优选实施方式中,这些电力单元相同。使用三相实施方式,与现有技术实施方式相比,在充电时间(即,充电时间的缩短)上甚至可以实现67%的提高。与一相实施方式相比,可以通过使用根据本发明的三相实施方式实现最大提高。
在根据本发明的一个实施方式中,充电装置可以包括至少两个电力单元104,所述至少两个电力单元104并联连接在电力单元104的输出侧上。可以使用并联连接来将多于一个电力单元连接到各个相。这取决于电网的类型和期望的充电功率。根据本发明的充电装置还可以在没有三相连接可用时连接到单相。由此,与将单独的部件和电力单元用于单相和三相充电中的现有技术实施方式相比,实现更简单的结构。
用于冷却的装置102可以包括将热量从电力电子器件100转移走的至少一个冷却元件。一冷却元件或多个元件将废热从部件转移走,并且由诸如铝这样的导热材料制成。在另一个实施方式中,用于冷却的装置102可以包括将热量从电力电子器件100转移走的冷却流体。当使用液体冷却时,提高上面列出的、特别是关于重量和体积的益处。还凭借液体冷却,因为热交换可能发生在装置本身外部,所以装置可以安装在汽车中的任何地方。
在根据本发明的优选实施方式中,电力电子器件100包括校正电路106,该校正电路106用于为了使对电能源101(即,电网络)的干扰最小化而校正无功电流。校正电路106可以是连接到各电力单元104的功率因数校正(PFC)电路106。已知开关模式技术引起对网络的干扰。通过使用例如集成电磁干扰(EMI)滤波器,且用所谓的功率因数校正电路(PFC)由装置本身,来最有效地补偿所产生的无功电流。这些电路补偿可能对电网络或对其他装置引起问题的无功电流、窄带以及宽带干扰。凭借这一点,可以达到甚至多于0.99的装置PFC系数。PFC电路允许装置在不增大网络的无功电流的情况下操作。这在被广泛使用的同时提高电网稳定性。PFC连接到各单元。该布置保证在正常情况下甚至在网络故障期间,在全功率范围上产生最小的无功电流。
在图2中,呈现了根据本发明的示例性电力单元结构。示例性电力单元104包括电力电子器件100、滤波级208、整流器(AC/DC)级210、功率因数校正(PFC)电路106、以及DC/DC级212。电力单元连接已经被进行到中性点。电力单元104连接到待充电的蓄能器103(即,可充电电池)。
在根据本发明的实施方式中,充电装置输出功率可以使用通信总线(例如,是与例如电池管理系统(BMS)或控制该装置的任意其他系统进行通信的公知常用方法的控制区域网(CAN))在0%至100%之间调节。如果装置没有定期从总线接收运行命令,则装置关闭自己并等待再次启动的命令。指令的缺乏可能导致例如BMS出故障或任意其他控制装置故障。凭借上述布置,不存在装置可以在没有控制系统的情况下对电池充电的状况,并且可以避免危险状况(例如,火灾状况)。
下文中描述了根据本发明的一个详细说明的优选实施方式。通常欧洲家庭具有3*25A、230VAC伏的接驳公用设施(utility connection)供人使用。这是家庭可以具有的最小可用连接。对于这种情况,使用本发明的最佳方式是,将其三相充电选项用于更快充电。常常家庭具有一个或更多个三相插座可用。最常见地,这些插座被认为是每相16安。在该优选实施方式中,用用于最大16安培输入的三个电力单元来建造本发明,各电力单元使用插座可以递送的电流中的大多数。各电力单元连接到电网的单独的相。当电网正确工作时,各电力单元在230VAC时消耗16安培。总功率为3*16A*230V=11040W,或大致为11kW的功率。在95%效率的情况下,意指大致10.5kW的充电功率到电池中。最大输入电流可以不同于16A,但因为16A是用于家庭插座的最常见限值,所以它用作示例。将功率需求限于16安培每相,这将不完全地加载3*25安培连接,并且在充电期间使得正常电力使用可能。
在根据本发明的所述实施方式中,可以避免由用户监测充电装置的操作的需要。充电装置还可以通常在对周围环境、特性、电网络、电池、汽车或装置本身没有危险的情况下,克服电网络故障的问题。另外,充电装置可与存在不同市电电压和/或频率的不同类型的电网(例如,美国、欧洲)兼容。此外,充电装置可以被建造为小、轻量化且结实地结构化,以在不损失行李或载货空间的情况下,或在不对汽车增加太多重量的情况下,适配在轿车或其他类型的车辆中。越轻的车辆在驾驶时消耗越少的能量,由此在不增大蓄电包的尺寸的情况下实现更长的行驶里程。另外,本发明的器具在当消费者可以在能量更便宜时,在这几个小时上将整个包完全充电时,借助能量效率而具有其他的消费者益处(诸如缩短的充电时间甚至资金节省)。
本发明的结构不限于附图中的示例。具有冷却装置的电力单元可以与其他电力单元分离地安装。可以在对装置的操作没有任何影响的情况下,在适当冷却的情况下,每一个电力单元彼此分离地定位。根据本发明,可以用被期望用于充电过程中的任意数量的连接相,来操作充电装置。
虽然已经参照附图和说明书呈现了本发明,但因为本发明在由权利要求允许的范围内进行变化,所以本发明并不限于这些附图和说明书。
Claims (8)
1.一种充电装置,所述充电装置用于从电能源(101)对车辆的蓄能器(103)充电,所述充电装置被集成到所述车辆中,其特征在于,
所述充电装置包括至少两个电力单元(104),所述至少两个电力单元(104)能够连接到所述电能源(101)的可用相,所述电力单元(104)包括:用于操作所述电力单元(104)的、开关模式技术的至少部分相同种类的电力电子器件(100),以及用于冷却所述电力电子器件(100)的装置(102)。
2.根据权利要求1所述的充电装置,其特征在于,所述电能源(101)是电网络。
3.根据权利要求1所述的充电装置,其特征在于,所述充电装置包括三个电力单元(104),所述三个电力单元(104)连接到所述电能源(101)的三个相,各电力单元(104)连接到其各自的相。
4.根据权利要求1所述的充电装置,其特征在于,所述充电装置包括至少两个电力单元(104),所述至少两个电力单元(104)并联连接在所述电力单元(104)的输出侧上。
5.根据权利要求1所述的充电装置,其特征在于,用于冷却的所述装置(102)包括至少一个冷却元件,所述至少一个冷却元件用于将热量从电力电子器件(100)转移走。
6.根据权利要求1所述的充电装置,其特征在于,用于冷却的所述装置(102)包括冷却流体,所述冷却流体用于将热量从电力电子器件(100)转移走。
7.根据权利要求1所述的充电装置,其特征在于,所述电力电子器件(100)包括校正电路(106),所述校正电路(106)用于校正无功电流,以便使对所述电能源(101)的干扰最小化。
8.根据权利要求7所述的充电装置,其特征在于,所述校正电路(106)是连接到各电力单元(104)的功率因数校正PFC电路。
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