CN105379059A - 用于使能量返回至尤其是电动车辆的待供应能量的一件设备的设施 - Google Patents
用于使能量返回至尤其是电动车辆的待供应能量的一件设备的设施 Download PDFInfo
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Abstract
本发明涉及一种用于使能量返回至一件设备中的设施(10),包括:至少一个光伏电池(20A–20D;22A–22B);至少一个能量供应装置(12),其包括电连接构件(14);至少一个能量存储组件(18A、18B),其一方面连接至光伏电池中的至少一个,而另一方面连接至能量供应装置中的至少一个以为能量供应装置供应电力;以及逆变器(28、30),其插置在能量存储组件中的至少一个与能量供应装置中的至少一个之间,从而使得被传输至供应装置的电为交流电的形式。本发明还涉及一种包括至少一个能量存储组件和至少一个逆变器的充电模块。
Description
本发明涉及一种用于使电力还原至电气设备,对该设备(尤其是例如汽车或公共汽车的电动车辆或者照明装置)进行充电的站点。
这种包括连接至缓冲蓄电池的光伏电池板的站点在现有技术水平下已被熟知,缓冲电池的电力随后经由充电终端(其包括与车辆的配套构件协同工作的电连接构件,并且连接至缓冲电池)而分配至车辆。通常,由于电流通过太阳能电池板而以直流电的形式产生,并且也通过电力存储缓冲电池而以直流电的形式存储,因此电力作为直流电而从太阳能电池板传输至充电站的缓冲电池,并且也作为直流电而从充电站的缓冲电池传输至车辆的电池。
在某些需要对大量的车辆进行充电的设施中,作为太阳能电池板的替补或替代,也可以有必要利用城市电网来对车辆进行再充电。这种电网中的电力为交流电的形式。
然而,为了使成本最优化,优选地使设施尽可能地标准化,以使得无论环境和获取电力的手段如何,都能够利用同样的方式来对车辆进行充电。
为此,本发明的目标在于提供一种用于使电力还原至待被供应电力的设备中的设施,该设施包括:
-至少一个形成电源的光伏电池,
-至少一个包括电连接构件的用于供应电力的装置,
-至少一个电力存储组件,其一方面连接至光伏电池或者光伏电池中的至少一个以存储来自所述电池的电力,而另一方面连接至电力供应装置或者电力供应装置中的至少一个以为电力供应装置供应电力,
-逆变器,其将直流电转变为交流电,该逆变器插置在电力存储组件或者电力存储组件中的至少一个与电力供应装置或者电力供应装置中的至少一个之间,从而使得被传输至供应装置的电为交流电的形式。
因此,从光伏电池获取的电力以直流的形式传输至电力存储组件,然而由电池和逆变器构成的组合组件将电以交流的形式传输至电力供应装置。
随后,无论是经由城市电网供应还是经由光伏电池板供应,电力供应装置都供应有交流电。
因而这种电力供应装置是标准的,并且由于无论电力供应装置所处的环境如何(输出来自城市电网或者来自光伏电池),该电力供应装置与车辆都以相同的方式进行交互,因此该电力供应装置设计简单。因此装置和该装置所连接至的待被供电设备(具体为车辆)可以是标准化的,如果装置与光伏电池连接,则在供应装置的上游对设施进行修改。因此,即使当需求和条件改变时,电力供应设施也可以利用标准元件而更容易地研制。并且,由于供应装置的标准化,因此也有助于设施的维护。
值得注意的是,电力存储组件的存在使得能够存储在日光照射时通过光伏电池获取的电力,并且在必要的时候还原电力。
本领域技术人员没有积极地实施该解决方案,由于电流类型的双向转换,该解决方案使设施的效率的降低。但是,由于这种效率损失所造成的损失成本通过标准化(尤其是供应装置的标准化)所带来的成本节省而得以补偿。
所述设施也可以包括下面列表中的一个或更多个特征:-供应装置为用于车辆的充电终端,该供应装置包括能够连接至车辆的配套构件的电连接构件,
-所述设施包括至少一个直流电转换器(DC/DC),该直流电转换器位于设置在设施中的至少一个光伏电池与缓冲电力存储组件或者缓冲电力存储组件中的一个之间,以将从电池获取的电力变换为使电池最佳地工作的状态。所述设施可以包括多个转换器,所述多个转换器并联地设置并且连接至同一个电力存储组件,每个转换器连接至不同的光伏电池,
-缓冲电力存储组件或者缓冲电力存储组件中的至少一个包括用于与转换器或者转换器中的至少一个的控制构件进行通信的模块,以传输与接收的电力有关的指令(特别是与电压或电流有关的指令(“电流或电压设定点”)),控制构件根据接收的指令来控制所述转换器,
-所述设施优选地包括测量由转换器或者转换器中的至少一个供给的电量的构件,转换器的控制构件根据由测量构件获取的结果来控制转换器。从而使得太阳能电池板和电力存储的效率最优化。优选地,当控制构件不能应用从相应的存储组件接收的指令时,控制构件根据测量构件的结果来控制转换器,
-所述设施优选地包括数个光伏电池板,所述光伏电池板并联地布置并且连接至同一个转换器,
-供应装置包括AC/DC转换器,该AC/DC转换器能够将以交流电形式接收的输入电力转变为以直流电形式存在的输出电力。实际上电力通常以直流电的形式存储在电动车辆中。然而,这种转换器为可选的,车辆充电器能够独立地执行这种转换功能(特别是经由其充电器),
-所述设施连接至城市电网,连接至所述设施的城市电网与逆变器的输出并联。以这种方式,城市电网可以被引入至供应装置的输入,该装置能够接收来自两个电源的电力:城市电网或光伏电池。无论电源是哪个,电力都将以相同的形式送达至装置处,这使得不需要制造得更复杂以适应不同形式的电力(交流电或直流电),
-数个电力存储组件并联地布置于设施中,并且连接至同一个供应装置,
-所述设施包括用于中断电路的构件,该构件由供应装置控制,具体地由所述装置的连接构件控制。这些中断构件设置在电源与连接构件之间,具体而言是设置在电力存储组件或者电力存储组件中的至少一个与供应装置之间。在供应装置由数个电源供电的情况下,对于每个电源来说中断构件部分地或完全地不同。例如,中断构件可以包括位于每个电力存储组件的输出端的开关,
-所述设施包括用于经由供应装置而与车辆通信的构件,并且供应至车辆的电力取决于经由通信构件所接收的数据。具体而言,所述数据可以概括地表示车辆电池的充电水平。也可以利用这样的方式来控制中断构件。利用这种方式,如果对车辆充电,则设置在设施中的供应装置与缓冲存储组件之间的连接被切断,
-电力存储组件或者每个电力存储组件为包括了阳极和阴极的电池,具体而言,为拥具有固体电解质的金属锂聚合物(LMP)电池。
本发明的目标还在于提供一种被设计为设置在再充电设施中的再充电模块,该再充电模块被设计为一方面连接到至少一个光伏电池,而另一方面连接至用于将电力供应至待被供电的设备(例如车辆)的至少一个装置,所述至少一个装置包括用于连接至所述待被供电的设备的构件,所述再充电模块包括:
-至少一个电力存储组件,其被设计为一方面连接至一个或多个光伏电池,以存储来自光伏电池的电力,而另一方面连接至供应装置以为供应装置供应电力,
-至少一个逆变器,其与存储组件或者存储组件中的至少一个串联地连接,以插置在该存储组件与电力供应装置或者电力供应装置中的一个之间。
优选地所述模块还包括至少一个直流电转换器,该直流电转换器与电力存储组件或者电力存储组件中的至少一个串联地连接,以插置在该存储组件与至少一个光伏电池或者数个并联的光伏电池之间。所述模块还可以包括系统的其他元件,具体而言包括位于光伏电池与供应装置之间的设施的所有中间元件。
所述模块为包括对于多个存储组件、逆变器等等的位置的集装箱。该模块也可以经由单个连接而直接地连接至电力供应装置以及光伏电池,并且这使得能够确保设施的良好工作,而不会增加暴露在外部的连接硬件。从而,由于模块的连接硬件和不同的构成元件能免受恶劣天气的影响,因此确保设施的良好寿命,并且可以确保设施(其设置在公路上)更好的美观性以及有助于维护。该模块也能够使自身适合于不同类型(尺寸、性质等等)的设施。
当然,集装箱也可以连接至城市电网。
应当注意,集装箱装备有用于冷却构成了所述模块的不同元件的多个进气口。这使得能够将构成设施的许多元件(这些元件被供应高压,从而趋于根据焦耳效应而变热)设置在封闭和有限的空间中,而不会产生可能导致火灾的热量。此外,所述集装箱也可以装备有热量和/或火灾探测器,以提高设施的安全性。
现在将参考所附附图来详细地描述本发明的构成了其非限制性示例的实施方案,其中:
图1为根据本发明的特定实施方案的再充电设施的简化电气原理图,
图2A和图2B分别为根据本发明的不同实施方案的再充电模块的俯视和侧视截面图。
如图1中可见,装置10为被设计为利用电力供应装置12(下文中也称为“充电终端”)来给电动车辆(例如,汽车或公共汽车)进行再充电的装置。该充电终端12设置在公路上并且包括电连接构件,该电连接构件被设计为根据需要而连接至待充电车辆的配套连接构件。本说明书并非旨在描述终端的架构。然而,人们可以规定连接构件位于终端外部,并且可以规定连接构件优选地可被选择的人使用(例如通过具有被限制的接入锁定构件的盖),具体而言,仅仅被授权了的人使用。
供应装置12一方面连接至城市电网16,而另一方面连接至相互并联并且与城市电网16并联地设置的两个电力存储组件18A、18B,这些电力存储组件18A、18B使得来自电源(这里分别为连接至电力存储组件18A的光伏电池板20A–20D和连接至存储组件18B的光伏电池板22A、22B)的电力被存储。每个光伏电池板通常包括多个光伏电池,这些光伏电池使得能够将接收的光子转变为电力。
值得注意的是,本实施方案中所描述的电力存储组件18A、18B也具体地包括蓄电池,特别是具有固体形式的电解质的金属锂聚合物(lithium–metal–polymer,LMP)电池,所述蓄电池包括多个单元电池(该单元电池包括阳极和阴极)。然而,还可以使用其他类型的存储组件,例如锂离子电池。这些不同类型的存储组件将电力以直流电的形式存储起来。
充电器24插置在光伏电池板20A–20D与电力存储组件18A之间。电池板20A和20B以及电池板20C和20D分别串联地连接,而包括了电池板20A、20B和20C、20D的两个支路并联地连接。两个充电器26A、26B也分别插置在每个光伏电池板22A、22B与电力存储组件18B之间,充电器26A、26B在电力存储组件18B的输入端并联地连接。
然而,应当注意,光伏电池板与充电器之间以及充电器与每个电池之间也可以具有其他的连接组合。实际上,连接至同一个充电器的电池板的数量和布置以及在每个电池的输入端并联地连接的充电器的数量可以变化。然而,建议根据充电器所能够承受的功率和电压来对每个充电器的输入端的电池板的数量和部署进行配置,以使装置的成本和工作最优化。
每个充电器24、26A、26B分别包括DC/DC转换器25、27A、27B,所述DC/DC转换器25、27A、27B能够根据电力存储组件的需要而对电流进行转换,具体地能够根据来自光伏电池的信号供应最佳功率。
逆变器28、30也分别设置在电池18A、18B的输出端。利用这种方式,每个逆变器28、30插置在对应的电池18A、18B的输出端与供应装置12的输入端之间。该逆变器能够将电池中作为直流电存储的电力转变为交流电的形式的电力。
城市电网16与逆变器28、30的输出端并联地到达充电终端的输入端。从而,充电终端12可以被供应来自太阳能电池板20A–20D、22A、22B以及来自电力存储组件18A、18B的电力,或者被供应来自城市电网16的电力。无论电源是哪个,在任何情况下电流都以交流的形式送达,这使得能够在充电终端12以相同的方式进行处理。因此充电终端12为标准充电终端,无论安装充电终端的设施的类型如何(电池板输出和/或城市电网),该标准充电终端都可以是一样的。
所述设施还包括在汇聚于充电终端12的每个支路上的用于中断电路的构件32、34、36,开关32设置在连接至城市电网16的支路的输出端,而开关34和36设置在逆变器28和30的输出端。这使得如果没有必要(特别是如果没有待被供电的设备连接至该终端)则能够不向充电终端12供应电力。这也有助于设施的安全。
由于通常电力随后也以直流电的形式存储于电动车辆中,因此充电终端12也包括AC/DC转换器38,该AC/DC转换器38插置在充电终端12的输入端与输出端之间。然而,这种转换器并不是必须的,这是由于如果有需要转换可以在车辆中执行。以下情况也是可行的:供应装置具有消耗电力而不存储电力并且随后利用交流电来工作的供应设备的用途。那么能够选择不给充电终端12装备这种逆变器38。
现在将更详细地描述不同元件之间的交互。
如所示出的,电力存储组件18A或18B优选地包括LMP电池,但是也有利地包括用于分别给电池加热的装置40A、40B,这样能够使电池在对电池进行充电之前达到一定的温度,从而确保电池的最佳工作。该装置具体地包括电阻器,该电阻器根据焦耳效应耗散接收的电流,从而产生热量。
存储组件也包括分别为42A、42B的通信模块,这样能够将与电池相关的数据传输至设施的其他元件,具体为充电器的控制构件,该控制构件分别为对于通信模块42A的44和对于通信模块42B的46A、46B。通信模块42A、42B也可以彼此通信。
每个电力存储组件也包括其他的集成构件,例如用于测量不同参数(温度、充电水平等等)的构件,用于确定每个电池的需求(特别是充电需求)的计算构件,以及用于使各个单元电池之间保持平衡以使得每个电池的工作最佳化的构件。本申请的剩余部分将不再具体地描述这些常规构件。应当注意,经由通信模块传输的数据为与每个电池的测量的特征或者计算的特征相关的数据。
因此,根据由通信模块传输至相关的充电器的控制构件的数据,可以使来自充电器的电流流向加热装置40A、40B(当认为组件的温度不够时),或者流向电池的单元电池(当认为组件处于温度的最佳范围内时)。为此,控制构件44(或分别为46A、46B)可以控制对于充电器的导流构件48(或分别为49A、49B)。传输至电池的电力的特性(电压,可以为电流)通常符合由计算模块计算得出的电池的要求。为了达到上述结果,控制构件44(或分别为46A、46B)控制DC/DC转换器25(或分别为27A、27B),以将从电池板接收的电力转换为电池所需的电压。
在存储组件18B由数个充电器26A和26B供电的情况下,来自每个充电器的要求在存储组件18B处实现,这使得能够通过集中电压指令而使设施的工作最优化。
应当注意,充电器也可以将与其工作有关的数据经由通信模块传输至存储组件。存储组件的要求可以根据由存储组件返回所获取的信息而变化。
当不能够获得存储组件18A、18B所需的电压指令时(具体而言是由于通过光伏电池供应的电力不足),充电器24可以配置为执行电压扫描并且分析每个电压的瞬时功率。从而,确定可以从光伏电池板获取的最佳功率,并且应用该功率。这个过程利用位于充电器的输出端的测量构件(分别特指50和52A、52B)来执行。这些测量构件将信息传输至分别对转换器25、27A、27B进行控制的充电器的控制构件,从而使得转换器施加所需的电压以实现最佳功率。
实现最佳功率的操作通常称为MPPT模式(MaximumPowerPointTracking,最大功率点跟踪的简称)。由于这些光伏电池是非线性的(这意味着对于相同的日射量,由这些单元电池供给的功率根据负荷而不同),该操作的目标在于寻找由光伏电池形成的发电机的最大功率点。
对于这种MPPT操作的非限制性操作模式包括:
测量对于固定的输出电压U1由单元电池供给的功率P1,
经过一定的时间之后,施加稍高于U1的第二电压U2,并且测量对应的功率P2,并且
如果P2大于P1,则尝试施加甚至更高的电压(如果P2小于P1,则分别减弱电压)。
因此,系统不断地改变在光伏电池板20A–20D、22A和22B的末端的电压,以逼近最大功率点。如果有必要,则转换器25、27A和27B随后根据缓冲电池18A和18B的最佳工作点而改变其输出电压。
当数个并联的充电器给相同的电池供电时,每个时刻只能有一个充电器可以处于MPPT模式。因此,存储组件的充电器的群控值是真实的。
从而,这些充电器能够使得每个电池中的充电最佳化。一旦电池部分地或完全地充电,则能够经由逆变器28、30而将电流传送至充电终端12。然而,如上所示,当充电终端12未连接至任何待被供电的设备(例如车辆)时仍然传送电流是不希望的。
为此,充电终端12包括检测车辆至连接构件14的连接(例如经由辅助导线)的构件。辅助导线也使得车辆能够与充电终端进行通信。充电终端12还包括由控制构件55控制的中断构件54,所述控制构件55根据在终端的连接器中存在车辆连接器14(由辅助导线发信号)而将中断构件的位置从打开位置(没有电流流向连接器14)改变至关闭位置(电流流向连接器14)。
不同开关32、34、36的控制构件56、58、60允许通过不同的支路来提供充电终端12的输入,对于不同的开关32、34、36来说,根据从系统的不同元件(特别是存储组件的通信构件42A、42B)接收的数据来对控制构件56、58、60进行控制。可以将不同的开关控制为相继地为终端12供应标准化形式的电力,这种标准化形式是利用逆变器28、30来确定的并且对应于城市电网16中所分配的形式。人们也可以猜想数个开关被同时激活。
作为一种变化形式,充电终端12可以直接与开关32、34、36的控制构件56、58、60进行通信。
应当注意,设施的所有中间功能元件(充电器24、26;存储组件18A、18B;逆变器28、30;以及中断构件32、34、36)设置在相同的单个充电模块60中。
如图2A和图2B中可见,该单个充电模块60安装于集装箱中,该集装箱包括沿着其壳壁的充电器70A–70F、电池72A–72F以及逆变器74A至74F。在图2A和图2B中所示的实施方案中,所述装置实际上包括为两个终端12供电的6个电池72A至72F,每个终端分配有三个电池。每个电池由三个并联的充电器供电,并且包括在其输出端的逆变器。因此,用于传输电力的不同大功率连接硬件以及通信连接硬件位于集装箱的内部。
该集装箱能够有助于维护并且有助于保持电池良好工作的适当高温。然而,应当注意,为了确保设施的安全,集装箱包括用于冷却集装箱的风扇76以及火灾探测器78,该火灾探测器78确保在火灾扩散到模块的其他元件之前,可能发生一个功能元件中的火灾被停止。
应当注意,根据需要和公路上出现的充电终端,相同的集装箱是可扩展的并且可以包括如上描述的更多功能元件。位于设施中的这种模块的存在自然不是必须的。
这里所描述的本发明并不限于利用附图描述的示例。本文所提出的变化形式也并不限制本发明的范围,本发明的范围也可以利用其它变化形式来实现。
Claims (14)
1.一种用于使电力还原至待被供应电力的设备的设施(10),该设施的特征在于其包括:
-至少一个光伏电池(20A–20D,22A–22B),其形成电源,
-至少一个电力供应装置(12),其包括电连接构件(14),
-至少一个电力存储组件(18A、18B,72A–72F),其一方面连接至光伏电池或者光伏电池中的至少一个以存储来自所述电池的电力,而另一方面连接至电力供应装置或者电力供应装置中的至少一个以为电力供应装置供应电力,
-逆变器(28、30,74A–74F),其插置在电力存储组件或者电力存储组件中的至少一个与电力供应装置或者电力供应装置中的至少一个之间,从而使得被传输至供应装置的电为交流电的形式。
2.根据前述权利要求所述的设施,包括至少一个DC/DC转换器(24、26A–26B,70A–70F),所述至少一个DC/DC转换器位于至少一个光伏电池(20A–20D,22A–22B)与电力存储组件(18A、18B,72A–72F)或者电力存储组件中的至少一个之间。
3.根据前述权利要求所述的设施,包括多个转换器(26A–26B,70A–70F),所述多个转换器(26A–26B,70A–70F)并联地布置并且连接至同一个电力存储组件(18B,72A–72F),每个转换器连接至一个或不同的光伏电池(22A、22B)。
4.根据权利要求2或3中的任意一项所述的设施,其中,所述电力存储组件(18A、18B)或者电力存储组件中的至少一个包括通信模块(42A、42B),该通信模块(42A、42B)与用于控制所述转换器(24、26A–26B)或者转换器中的至少一个的构件(44、46A–46B)进行通信,以传输与接收的电力有关的指令,控制构件根据接收的指令来控制所述转换器,所述与接收的电力有关的指令具体为电压指令。
5.根据权利要求2至4中的任意一项所述的设施,包括用于测量经由所述转换器(24、26A–26B)或者转换器中的至少一个所传送的电力的构件(50、52A–52B),转换器的控制构件(44、46A–46B)根据由测量构件获取的结果来控制转换器。
6.根据权利要求2至5中的任意一项所述的设施,包括数个光伏电池板(22A、22B),其并联地布置并且连接至同一组转换器。
7.根据前述权利要求中的任意一项所述的设施,其中,供应装置(12)包括AC/DC转换器(38),该AC/DC转换器(38)能够将以交流电形式接收的输入电力转变为以直流电形式存在的电力。
8.根据前述权利要求中的任意一项所述的设施,其中,设施连接至城市电网(16),城市电网与逆变器(28、30)的输出并联地连接至所述设施。
9.根据前述权利要求中的任意一项所述的设施,其中,数个电力存储组件(18A、18B,72A–72C、72D–72F)并联地布置于设施中,并且连接至同一个供应装置(12)。
10.根据前述权利要求中的任意一项所述的设施,包括用于中断电路的构件(32、34、36),该构件由供应装置(12)控制,具体地由所述装置的连接构件(14)控制。
11.根据前述权利要求中的任意一项所述的设施,其中,所述电力存储组件或者电力存储组件中的每个包括具有阳极和阴极的电池。
12.一种被设计为设置在再充电设施中的再充电模块(60),该再充电模块被设计为一方面连接到至少一个光伏电池(20A–20D,22A、22B)而另一方面连接至用于将电力供应至待被供电的设备的至少一个装置(12),所述至少一个装置包括用于连接至所述待被供电的设备的构件(14),所述再充电模块包括:
-至少一个电力存储组件(18A、18B,72A–72F),其被设计为一方面连接至一个或数个光伏电池,以存储来自光伏电池的电力,而另一方面连接至供应装置以为供应装置供应电力,
-至少一个逆变器(28、30,74A–74F),其与存储组件或者存储组件中的至少一个串联地连接,以插置在该存储组件与电力供应装置或者电力供应装置中的一个之间。
13.根据前述权利要求所述的模块,包括至少一个DC/DC转换器(24、26A–26B,70A–70F),其与电力存储组件(18A、18B,72A–72F)或者电力存储组件(18A、18B,72A–72F)中的至少一个串联,以插置在该存储组件与至少一个光伏电池(20A–20D,22A–22B)或者数个并联的光伏电池之间。
14.根据权利要求12和13中的任意一项所述的模块,该模块被包括在由集装箱(62)形成的外壳中,该集装箱优选地装备有用于冷却构成所述模块的不同元件的多个进气口(76)。
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US11309714B2 (en) * | 2016-11-02 | 2022-04-19 | Tesla, Inc. | Micro-batteries for energy generation systems |
WO2020085424A1 (ja) * | 2018-10-26 | 2020-04-30 | 株式会社九電工 | 再生可能エネルギーを用いた電力供給設備 |
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