CN104160546A - 用于对电动车辆的电池进行充电的方法,系统和充电器 - Google Patents

用于对电动车辆的电池进行充电的方法,系统和充电器 Download PDF

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Publication number
CN104160546A
CN104160546A CN201280064310.9A CN201280064310A CN104160546A CN 104160546 A CN104160546 A CN 104160546A CN 201280064310 A CN201280064310 A CN 201280064310A CN 104160546 A CN104160546 A CN 104160546A
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China
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port
electric power
power
charger
charging
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Inventor
E.W.J.罗伯斯
L.P.贝奇
C.博曼
A.尤古
M.H.迪克瑟
M.范德维当克
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ABB Azipod Oy
ABB BV
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    • B60L3/00Electric devices on electrically-propelled vehicles for safety purposes; Monitoring operating variables, e.g. speed, deceleration or energy consumption
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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (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

本发明涉及用于对电动车辆的电池进行充电的方法、充电控制器、充电器和充电系统。包括:a)为电动车辆连接的每一个端口确定优先级;b)将最大可用电力预算分配给具有第一优先级的端口;c)在具有第一优先级的端口处执行充电会话;d)监控从所述优先端口传送到所述车辆的实际电力;e)根据传送到所述车辆的实际电力来调节所述优先端口的电力预算值;以及f)将剩余的电力预算分配给具有第二最高优先级的端口;g)如果电力预算超出预定阈值,则在剩余的电力预算被分配给其的端口处开始或重新开始充电会话;以及h)重复步骤e-h。

Description

用于对电动车辆的电池进行充电的方法,系统和充电器
技术领域
本发明涉及用于根据Chademo协议对电动车辆的电池进行充电的方法、充电控制器、充电器和充电系统。电动车辆的充电过程是耗费时间的过程。由于这一原因,在各种充电点处使快速充电器可用,例如在城市区域中。
WO 2011/134861公开了一种分布式电力系统,其包括耦合到处于远程位置的公共电力网的多台可再充电的电动车辆。调度控制器被配置为管理可再充电的电力单元的充电优先级和充电电流特性。该公开文献并没有涉及Chademo协议,并且此外,甚至没有涉及根据传送到车辆的实际电力来调节所分配的优先级端口的电力预算值。相反地,其基于充电次数和特性的连续计算来实现目标充电水平。基于对所接收的电力的测量,充电被执行直到满足目标充电水平为止而不是直到电力预算被耗尽为止。
EP 0 314 155公开按照由优先级参数所确定的次序对电池的充电。该公开文献也没有涉及Chademo协议,同样没有涉及根据传送到车辆的实际电力来调节所分配的所述优先端口的电力预算值,并且电池并不位于车辆中。
在布置这些快速充电器时所出现的一个困难是可用的电力连接的电力额定值。该容量由各种局部因素所限定,诸如可用的电力电缆、保险丝、配电变压器的电力额定值或快速充电器中的操作的电力模块的数量和额定值。电力额定值在一些情况下也能够由调峰系统、智能电网系统或所谓的负载管理系统动态地限定。快速充电要求更高的电力,以在合理的时间内转移某一量的电荷。当车辆在快速充电器处充电时,从电力连接所取回的电力可能使得没有剩余充足的电力来同时对第二或更多车辆电池进行充电。
然而,当受限的电力容量是可用的但确实想要开始对第二辆汽车进行充电时,以较低的电力开始第二车辆的充电会话是有可能的。传送到第一和第二车辆的电力之和应该被管理以使得其不超出可用的容量。
在许多快速充电系统中,工作的方式包括两个阶段:在其中协商充电会话的参数的初始化阶段以及实际充电会话。在充电器会话期间车辆能够担当主控制器:车辆以恒定的时间间隔将充电电流控制的设定值传输至充电器。充电器输出与该设定值对应的电流。如果来自车辆的设定值改变,则充电器使跟随新值的输出电流变化。
充电会话以其执行的电力由充电器和车辆之间的通信来确定,或者由车辆的电池管理系统来确定。这种通信根据用于充电器和电池管理系统的具体协议而发生,例如著名的Chademo协议。这些协议中的一些的性质是它们允许关于用于充电会话的充电电力进行协商,但仅是事先地,即在充电开始之前。一旦会话已经开始,其以预定的电力速率继续。例如根据Chademo协议,诸如充电电流的设定点的、用于充电的控制参数应仅从车辆向充电器传输。然而这具有缺点,即一旦在已经开始的充电会话期间更多的电力可用(例如当第一车辆完全充满并且不再需要任何电力时),第二车辆的充电以比可用电力的最大值低的电力继续,并且结果是:更长的充电时间。本发明的目标是解决这个问题。
本发明随之提出一种用于对电动车辆的电池进行充电的方法,其包括:a)为电动车辆连接的每一个端口确定优先级,b将最大可用电力预算分配给具有第一优先级的端口,c)在具有第一优先级的端口处执行充电会话,d)监控从所述优先端口传送到所述车辆的实际电力,e)根据传送到所述车辆的实际电力来调节所述优先端口的电力预算值,f)将剩余的电力预算分配给具有第二最高优先级的端口,g)如果电力预算超出预定阈值,则在剩余的电力预算被分配给其的端口处开始或重新开始充电会话,以及h)重复步骤e-h。
根据本发明的方法扫除了现有技术的缺点,其中充电会话以根据通信协议所协商的电力水平开始并且继续,所述通信协议不允许在会话已开始之后由充电器改变电力水平,这导致不必要的长充电时间。
由于这些协议并不实现在会话期间变化的电力水平,充电器在其已确定可用的电力已增加并且更接近于车辆所需要的电力时停止正进行的充电会话。一旦充电会话停止,充电器允许开始新的会话而不解锁电动车辆。对于新会话,协议允许协商新的值,其进而可被选择为更合适的值。
所需要的电力可能由于各种原因而在充电器处不可用。充电器可被连接在电力源处,诸如电网,所述电网或电网连接(或变电站)具有最大电力,或者充电器可具有多个次电力交换端口,已经有车辆耦合到这些端口中的一些以对其电池进行充电。这样的车辆在某一段时间期间可能具有恒定的电力消耗,但特别地当电荷状态几乎被达到时,所需要的电力可能已经减少。从那一时刻起,对于另一车辆可用的电力增加。
在优选实施例中,本发明以如下方式实现。车辆连接到充电系统并且已在车辆和充电器之间建立通信。充电器分派电力预算,所述电力预算取决于每一个端口的优先级以及是否有车辆连接到电力交换端口。
电力预算是由软件计算的虚拟值并且被保持在软件应用中或存储在诸如存储器的数字存储介质内部。在某一充电端口处的最大可传送电流基于目标电压和所分派的电力预算由充电器计算,最大电流进而被传递至车辆。车辆进而开始传递其所需要的电流,充电器据此在预定时间和预定范围内传送车辆所需要的电流。所传送的电流由充电器连续地监控并且电力预算值根据实际传送的值而增加或减少。如果在相同时刻第二车辆连接到相同的充电器,由于在第一端口上减少的电力需求而可用的电力预算被分派至第二端口。在第二端口处的充电以所分派的剩余电力预算(或更少)开始。在第一电力交换端口处空闲的电力预算连续地被分派至第二电力交换端口。如果在第二端口处所分派的电力预算超出某一预定水平,则在第二交换端口处的充电会话停止并且以更高的充电电力速率重新开始以实现在第二端口处的更快速的充电。
根据本发明的方法因此还可包括-只要所需要的电力在充电器处不可用-在一时间间隔之后再次重复地确定可用的电力并且如果在该时间间隔之后更多的电力在充电器处可用,则停止充电会话并且以更多的电力开始新的会话。
通过以这种方式监控可用的电力,由于车辆所需要的电力和可用的电力之间的差异被保持为低,所以充电时间进一步减少。所述间隔将被选择为使得其有益于停止充电会话并且开始新的会话。开始充电会话通常花费一些时间,例如大约半分钟。这段时间典型地被用于执行诸如绝缘监控以及检查系统中的电通路的正确操作的一些安全检查。针对可用的电力和实际充电会话的电力水平之间的差异,该方法可包括将阈值考虑在内。当该差异过小时,停止会话并且开始新的会话是没有意义的。当该差异充分时,会话可停止并且重新开始。
此外,诸如增加的电力可用性的、可用电力中的趋势可被监控并且其可被确定以预期或等待进一步的发展。
确定车辆的电力需求可包括建立车辆和充电器之间的通信信道并且通过在车辆的电池管理系统和充电器的通信构件之间的通信信道之上的通信来协商所需要的电力。
大多数电动车辆装备有电池管理系统,所述电池管理系统被配置用于与充电器的通信。针对这种通信的常用协议是Chademo协议。根据本发明的方法因此还涉及确定电力需求和/或执行充电会话包括根据Chademo协议进行充电或通信。
在充电器处可用的电力可由电力源或电力连接来确定,诸如电网连接。电网连接可以是在本地变电站处的连接,其具有电力限定,举例来说诸如为50kW。尽管充电器的电力转换器理论上能够以更高的速率进行充电,但与电网的连接形成了瓶颈。也有可能的是电网连接能够传送所需的电力,但电力转换器的电力容量并不足够,在那种情况下电力转换器形成了瓶颈。
也可能是这种情况,即所需要的电力低于电力连接的电力额定值,但在充电器处可用的电力受耦合到相同充电器或相同电力源的另一车辆影响。例如,当电网连接的电力额定值为50kW,并且电力转换器具有多个次电力交换端口时,耦合到第一电力交换端口的车辆可能需要使得充电器处的剩余电力低于第二车辆的需求这样的电力量。
当多个充电器的所有者已与电网所有者就总的电力消耗达成协议时又一种情形出现。在那种情况下,在第一充电器处的电力消耗可能向在第二充电器处可用的电力强加限制。充电器随之可能包括用于直接地或例如经由控制器与其他充电器的通信的通信构件,所述控制器可由中央服务器形成。
单个充电器或多个充电器耦合到智能电网或负载管理系统的情况也可能出现,所述智能电网或负载管理系统经由通信构件或服务器网络随时间向充电器动态地分派电力限定。这可能是动态值,其不同于本地电力供应连接的最大容量。根据本发明的方法可使用这个动态限定作为用于确定电力预算的输入值。
本发明还涉及用于电动车辆的电池的充电器,其包括主电力交换端口,用于与诸如电网的电力源交换电力;至少一个次电力交换端口,用于与车辆交换电力;电力转换器,用于在主电力交换端口和所述至少一个次电力交换端口之间转换电力;以及通信构件,用于与车辆的电池管理系统通信;其中充电器被配置用于确定待充电的车辆的电力需求,确定可用的电力,如果所需要的电力可用,则执行充电会话以便将所需要的电力传送到车辆以及如果所需要的电力不可用,则开始充电会话以便将可用的电力传送到车辆并且在一时间间隔之后再次确定可用的电力,以及如果在该时间间隔之后更多的电力可用,则停止该充电会话并且以更多电力开始新的会话。
在一个实施例中,预测算法能够被用于随时间改变所分派的电力预算。例如,某一车辆的曲线基于先前的充电会话被存储在充电的中央数据库中。根据在协商期间接收的充电参数,充电曲线能够被取回,其进而能够被用于改变未来的电力预算。
充电器还可被配置用于只要所需要的电力不可用,就在一时间间隔之后再次重复地确定可用的电力,以及如果在该时间间隔之后更多的电力可用,则停止该充电会话并且以更多电力开始新的会话。
可用电力的确定在这里可包括计算在主电力交换端口处可用的电力和在处于耦合到相同电力源的相同或另一充电器上的第二次电力交换端口处交换的电力之间的差异。本发明还涉及一种用于改变电动车辆的电池的系统,其包括至少一个如上面描述的充电器。
在本发明中描述的充电器可具有某种类型的用户界面,其通知用户充电的进度。如果这个用户界面显示每个停止和开始序列,则用户可能会变得糊涂。开始和停止以及改变电力水平是系统的技术参数并且不应该必须向用户解释。用户界面因此能够被配置为使得其会将对一辆汽车进行充电表示为一个会话而不管停止和开始事件的数量。用户进而将不会注意到开始和停止而仅知晓对其汽车进行充电的整体进度。
当充电器链接到某种类型的支付系统时类似问题可能存在。这例如可以是信用卡终端、在线支付系统、经由电话或文字消息的支付或订户管理系统。在这种情况下,不期望每一个单独的停止-开始序列被视为独立的会话。这可能导致支付系统对于一个单一充电会话产生许多不同的支付或发票,这将会使用户糊涂并且也可能使充电站的操作者糊涂,并且最有可能导致较高的管理费用。然而,这个问题能够以与用户界面类似的方式来解决。充电系统及其软件会将一辆汽车的充电会话视作一个会话而不管在该会话期间的停止和开始的数量。IT系统会将其表示为一个会话并且这样通知支付方法。
在一个实施例中,基于来自先前充电会话的、所存储的测量数据来预测充电曲线。预测针对某一车辆类型、型号或用户ID来进行。因为最后重新开始充电会话的原因是缩短电动车辆的充电时间,所以充电曲线预测能够用来确定重新开始充电会话是否将会是有效的。
现在将参考以下附图以更多细节来阐述本发明,其中:
-图1示出本发明的实施例,其中充电器包括具有多个输出的一个模块;
-图2示出本发明的实施例,其中充电器包括多个电力模块;以及,
-图3示出在充电控制器中实现的方法的流程图;
-图4示出在充电器的不同端口上的充电会话的曲线图。
-图5a-b图5a示出充电系统,其中两个充电器连接到相同的电力源。
-图6a-b示出与图5中的完全相同的情形,仅有的差别在于存在中央服务器,其监督两个充电器并且向它们两者分配电力预算。
-图7示出其中充电器连接到电力源11的情形,电力源11也向具有动态电力需求的住宅72或任何其他负载传送电力。
-图8示出其中给出电力模块的可能结构之一的实施例。
-图9示出充电会话的曲线图,其中对应的屏幕位于HMI上。
图1示出本发明的实施例,其中充电器包括具有多个输出的一个模块。充电器包括用于对多台电动车辆同时或按次序进行充电的多个电力交换端口。来自电网的交流电力由电力模块转换成直流电力。电力模块具有多个电力输出,该多个电力输出能够同时服务电动车辆。像电流设定值那样的充电控制命令仅在充电会话期间从车辆接收,车辆所请求的电流必须在预定的时间内传送到车辆。在一些情况下,更多的电力在充电器处可用。在那种情况下,充电器在充电会话期间不能主动增加电流水平。充电器仅能够在充电会话之前的初始化阶段传递电力水平。因此,电力交换端口上的充电会话由充电器停止并且重新开始以便以更高的电流水平对车辆进行充电。充电控制器按照权利要求1进行操作以增加电流水平并且同时对多台电动车辆进行充电。
图2示出本发明的实施例,其中充电器包括多个电力模块。为增加端口上的直流电力水平,电力模块通过转换矩阵连接到某一电力交换端口。电力交换端口上的电力水平的增加能够以不连续的步骤发生也能够连续地发生。
图3示出在充电控制器中实现的方法的流程图。
[S31]为电动车辆连接的每一个端口确定优先级。用户在优先级被分配给端口之前必须按下开始按键。首先到达的车辆被给与最高优先级。
[S32]将最大的可用电力预算分派给具有第一优先级的车辆。
[S33]在具有第一优先级的端口上应用充电会话。这包括下列步骤:
[S41]从电动车辆接收目标电压;
[S42]基于所分配的电力预算和来自车辆的目标电压确定电流预算;
[S43]向电动车辆传输电流预算;
[S44]车辆开始向充电器传输电流值请求,其中所请求的电流低于电力预算。
[S34]传送到电动车辆的实际电力由充电器监控。如果车辆请求大体上比端口上所分配的电力预算低的电力,则电力预算被减少。
[S35]在某一电力交换端口上减少的电力预算给了我们空闲的电力预算,其被分配给具有第二最高优先级的端口。
[S36]剩余的电力预算分配给具有第二最高优先级的端口。[S37,S38]如果电力预算超出预定阈值,在剩余的电力预算被分配给其的端口处开始或重新开始充电会话,否则转到S34。重复步骤S34至S37直到所有车辆都被充电。
图4示出在充电器的不同端口上的充电会话的曲线图。在端口1上,车辆作为第一个被连接。能够由端口传送的最大电力作为电力预算分配给端口。车辆开始请求低于所分配的电力预算的电力,电力进而由充电器传送。如在曲线图中所见,所分配的电力预算由点线给出。实线给出了传送到电动车辆的实际电力。车辆的电池在第一部分中由恒定电流充电,传送到车辆的电力或多或少是恒定的。在某个点,电池几乎被充满,并且电流终止。在这过去之后,应用恒定电压充电,传送到车辆的电力减少。由于传送到车辆的实际电力减少,电力预算也减少并且释放的电力预算被分配给下一优先级的端口,其为端口2。端口2的电力预算连续地增加,在某个时刻第一阈值41被超出并且开始信号被传递到电动车辆以开始充电会话。车辆开始以恒定电力水平充电,同时端口2的电力预算保持增加直到电力预算越过另一阈值水平42。由于存在正进行的充电会话,停止命令从充电器传递到车辆以停止会话。新的电力预算被传递到车辆,其开始请求比电力预算小的电力水平,在一段时间之后,又一电力阈值43被端口超出,新的充电会话据此以新的电力水平重新开始。端口2上的电力预算不再增加。端口2上的充电会话也减少其电力预算,并且剩余的电力预算被分配给端口3。端口3上的电力预算稳定地增加并且在某一时刻阈值被超出,充电会话据此以新的电力预算开始。
图5a示出充电系统,其中两个多端口充电器被连接到相同的电力源。除了在多个电力交换端口之间分配电力预算之外,还必须在多个充电器之间分配电力预算。充电器以与图1或2中相同的方式进行操作,差别在于充电端口并不都是相同充电器的部分并且各个充电器还彼此通信以协商电力预算。这种通信由有线或无线构件完成。对于分配的决定能够通过两个充电器之间的协商来完成,但也有可能的是充电器中的一个采用主配置而另一个采用从配置。也有可能的是将单端口充电器连接到相同的电力源连接,电力进而仅在充电器之间分配(图5b)。
图6a示出与图5中的完全相同的情形,仅有的差别在于存在中央服务器,其监督两个充电器并且向它们两者分配电力预算。在其中充电器不连接到电力源的情况下使用相同配置,但根据协定充电器累积地不能超出一电力水平。因此需要中央服务器,其能够与它们全部进行通信。图6b示出其中中央服务器能够接收来自其他系统的命令以限定充电器组的电力的设定。这种限定可能随时间是不同值。这种情况的典型示例是由公用事业公司控制的需求-响应应用,但也存在诸如任何其他动态电力管理系统或动态定价系统的其他可能性。中央服务器接收每一时刻的最大值并且通过调节连接到系统的多个充电器的电力预算而在下游实现这种限定。这个系统中的充电器能够是装备有单个次电力交换端口或多个次电力交换端口的类型,或者是这两者的组合。
图7示出其中充电器连接到电力源11的情形,所述电力源11也向具有动态电力需求的住宅72或任何其他负载传送电力。住宅的电力需求是未知的变量并且因此需要被测量。在为整个充电器确定总电力预算之前,住宅的电力消耗由电力测量装置71测量。
图8示出其中给出电力模块的可能结构之一的实施例。转换器将电力源的交流电压转换成直流电压并且通过逆变器使所转换的直流电压升高至交流电压。交流电压进而被施加到变压器上并且此后将由整流器转换成直流电压。其他配置也可能用于电力模块,在这篇文档中将不讨论这些配置。
图9示出充电会话的曲线图,其中对应的屏幕位于HMI上。电动车辆到达充电站,其中电动车辆已经在充电端口中的一个上充电。新到达的车辆连接到充电器并且在充电器的触摸屏显示器上按下开始按键(91)。由于没有电力预算可用或电力预算的量过低而不能开始高效的充电会话,该车辆必须等待电力预算(92)。在某一时刻,为端口所分派的电力预算超出某一阈值并且充电能够以一电力水平开始。该端口的电力预算保持增加并且超出第二电力预算阈值,充电以更高电力水平重新开始(93)。端口的电力预算仍增加直到其到达充电器的最大可用电力预算,充电进而以最大电力水平重新开始(94)。充电继续进行但车辆所需要的实际电力下降,电力预算随即被调节并且将剩余的预算分派给另一端口。当车辆完全充满时充电完成(95)。这个示例演示具有开始和停止序列的多个充电会话如何能够作为一个单一充电会话向系统的用户表示。

Claims (13)

1.用于按照Chademo协议对电动车辆的电池进行充电的方法,其包括:
a)为电动车辆连接的每一个端口确定优先级;
b)将最大可用电力预算分配给具有第一优先级的端口;
c)在具有所述第一优先级的端口处执行充电会话;
d)监控从所述优先端口传送到所述车辆的实际电力;
e)根据传送到所述车辆的实际电力来调节所分配的所述优先端口的电力预算值;
f)将剩余的电力预算分配给具有下一优先级的端口;
g)如果所述电力预算超出预定阈值:
-在所述剩余的电力预算被分配给其的端口处开始或重新开始充电会话;
h)重复所述步骤e-h。
2.根据权利要求1所述的方法,其中充电会话包括:
-从所述电动车辆接收目标电压;
-至少基于所分配的电力预算和从所述车辆接收的目标电压来计算电流预算;
-向所述电动车辆传输所述电流预算;
-传送所述电动车辆所请求的电流直到充电完成,其中所述所请求的电流等于或低于所述电流预算。
3.根据权利要求1所述的方法,其中所述电力预算由下列各项确定:
p)操作的电力模块的数量;
q)电网连接熔断;
r)配电变压器额定值;
s)连接到相同连接的其他负载;
t)集成在充电系统中的本地能量存储;
u)需求响应系统;
v)任何其他动态电力管理系统;
w)或p,q,r,s,t,u,v的任何组合。
4.被配置用于按照Chademo协议对电动车辆的电池进行充电的充电控制器,其包括:
a)为电动车辆连接的每一个端口确定优先级;
b)将最大可用电力预算分配给具有第一优先级的端口;
c)在具有所述第一优先级的端口处应用充电会话;
d)监控从所述优先端口传送到所述车辆的实际电力;
e)根据传送到所述车辆的实际电力调节所述优先端口的电力预算;
f)将剩余的电力预算分配给下一优先级的端口;
g)如果所述电力预算超出预定阈值:
-在所述剩余的电力预算被分配给其的端口处开始或重新开始充电会话;
h)重复所述步骤e-h。
5.用于按照Chademo协议同时对多台电动车辆进行充电的充电器,包括,在充电会话期间所述充电器采用从配置并且所述电动车辆采用主配置,所述充电器包括:
-主电力交换端口,用于与诸如电网的电力源交换电力,所述电力源和/或主电力交换端口由电力额定值限定;
-多个次电力交换端口,用于与车辆交换电力,每一个次电力交换端口由电力额定值限定;
-至少一个电力转换器,用于在所述主电力交换端口和多个次电力交换端口之间转换电力,所述至少一个电力转换器由电力额定值限定;
-其中所述次电力交换端口额定值之和超出下列各项的电力额定值:
-电力源,和/或
-用软件实现的、与电力源有关的限定;
-主电力交换端口,和/或
-至少一个电力转换器;
-充电控制器,其被配置用于:
a)为电动车辆连接的每一个端口确定优先级;
b)将最大可用电力预算分配给具有第一优先级的端口;
c)在具有所述第一优先级的端口处应用充电会话;
d)监控从所述优先端口传送到所述车辆的实际电力;
e)根据传送到所述车辆的实际电力调节所述优先端口的电力预算;
f)将剩余的电力预算分配给下一优先级的端口;
g)如果所述电力预算超出预定阈值:
-在所述剩余的电力预算被分配给其的端口处开始或重新开始充电会话;
h)重复所述步骤e-h。
6.充电系统,其包括用于按照Chademo协议同时对多台电动车辆进行充电的至少两个充电器,在充电会话期间所述充电器采用从配置并且所述电动车辆采用主配置,包括:
-每一个充电器具有用于与诸如电网的电力源交换电力的主电力交换端口,所述电力源和/或主电力交换端口由电力额定值限定;
-每一个充电器具有用于与车辆交换电力的次电力交换端口,所述次电力交换端口由电力额定值限定;
-每一个充电器具有用于在所述主电力交换端口和多个次电力交换端口之间转换电力的至少一个电力转换器,所述至少一个电力转换器由电力额定值限定;
-其中所述至少两个充电器的主电力端口连接到相同的电力源;
-其中所述次电力交换端口额定值之和超出下列各项的电力额定值:
-所述电力源,和/或;
-用软件实现的、与电力源有关的限定;
-充电控制器,其被配置用于:
a)为电动车辆连接的每一个端口确定优先级;
b)将最大可用电力预算分配给具有第一优先级的端口;
c)在具有所述第一优先级的端口处应用充电会话;
d)监控从所述优先端口传送到所述车辆的实际电力;
e)根据传送到所述车辆的实际电力调节所述优先端口的电力预算;
f)将剩余的电力预算分配给下一优先级的端口;
g)如果所述电力预算超出预定阈值:
-在所述剩余的电力预算被分配给其的端口处开始或重新开始充电会话;
h)重复所述步骤e-h。
7.根据任一在先权利要求所述的充电器,其包括用于与另一充电器或控制器的通信的通信构件。
8.根据任一在先权利要求所述的充电器,其被配置用于控制另一充电器的电力交换。
9.根据权利要求5或6所述的充电器,其被配置为受控制器或另一充电器控制。
10.根据任一在先权利要求所述的充电器,其中在所述车辆和所述充电器之间执行的多个充电会话对于所述系统的用户被表示为一个会话。
11.根据任一在先权利要求所述的充电器,其中在所述车辆和所述充电器之间执行的多个充电会话对于支付应用被表示为一个会话。
12.用于根据Chademo协议同时对多台电动车辆进行充电的充电系统,其包括:
-至少一个根据权利要求5所述的充电器或根据权利要求6所述的充电系统,其被配置为受控制器控制;
-用于控制所述至少一个充电器或充电系统的控制器,其被配置用于从电网或公用事业操作者、需求-响应系统、智能电网系统或动态电力管理系统接收电力预算并且根据所接收的电力预算控制所述至少一个充电器或充电系统。
13.根据任一在先权利要求所述的方法,其中开始充电会话或者停止并开始充电会话的决定还基于:
-在传送到所述车辆的实际电力中所观察到的趋势;
-基于充电会话的历史数据的充电曲线预测。
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Application publication date: 20141119