CN103262388A - 蓄电单元及蓄电装置 - Google Patents
蓄电单元及蓄电装置 Download PDFInfo
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Abstract
一种蓄电单元,其包括:容器,其用于将蓄电部件和电解液一起收纳;充电用的受电天线,其连接于蓄电部件,用于以非接触的方式接受自供电装置输送来的电力;及放电用的送电天线,其连接于蓄电部件,用于以非接触的方式输送蓄电部件所储存的电力,受电天线和送电天线配置在容器内。
Description
技术领域
本发明涉及能够充放电的蓄电单元和具有蓄电单元的蓄电装置。
背景技术
以往的蓄电单元具有以下构造:将发挥蓄电功能的蓄电部件包在容器中,并将该蓄电部件与电解液一同液密/气密地密封起来。由于蓄电部件的充放电通过贯穿容器的电极端子来进行,因此,需要使电极端子以无损于液密性/气密性的方式贯穿容器。这一点成为在设计和制造蓄电单元时需要细心关注的事项。特别是在严峻的环境下使用的汽车用的蓄电单元中,为了确保液密性/气密性而需要过多的零件、组装工作量的情况较为常见。
从确保这样的蓄电单元的液密性/气密性的观点考虑,一种以非接触的方式对蓄电单元进行充电的技术受到关注。在JP2010-193657A中公开了一种用于以非接触的方式对车辆的蓄电装置供电的移动车辆供电系统。
但是,在像JP2010-193657A那样的以往的非接触充电单元中,由于蓄电部件的充放电通过贯穿容器的电极端子来进行,因此,也在确保蓄电单元的液密性/气密性这方面存在不足。当损坏蓄电单元的液密性/气密性时,可能引起因电解液泄漏而导致性能降低、因外部气体侵入而导致性能降低,损坏蓄电单元的可靠性、安全性。
发明内容
本发明即是鉴于上述问题点而做成的,其目的在于提高蓄电单元的可靠性和安全性。
采用本发明的一技术方案,能够提供一种蓄电单元,其包括:容器,其用于将蓄电部件和电解液一起收纳;充电用的受电天线,其连接于上述蓄电部件,用于以非接触的方式接受自供电装置输送来的电力;及放电用的送电天线,其连接于上述蓄电部件,用于以非接触的方式输送被储存在该蓄电部件中的电力;上述受电天线和上述送电天线配置在上述容器内。
以下,一边参照附加的附图一边详细地说明本发明的实施方式和优点。
附图说明
图1A是本发明的第1实施方式的双电层电容器的主视图。
图1B是本发明的第1实施方式的双电层电容器的剖视图。
图1C是本发明的第1实施方式的双电层电容器的俯视图。
图2是图1B的部位a的放大图。
图3A是本发明的第1实施方式的蓄电装置的主视图。
图3B是本发明的第1实施方式的蓄电装置的剖视图。
图3C是本发明的第1实施方式的蓄电装置的俯视图。
图4是本发明的第1实施方式的双电层电容器的充放电控制电路的框图。
图5是将本发明的第1实施方式的蓄电装置应用于车辆的情况的结构图。
图6是本发明的第1实施方式的双电层电容器的变形例的立体图。
图7A是本发明的第1实施方式的双电层电容器的变形例的主视图。
图7B是本发明的第1实施方式的双电层电容器的变形例的剖视图。
图8A是本发明的第2实施方式的双电层电容器的主视图。
图8B是本发明的第2实施方式的双电层电容器的剖视图。
图8C是本发明的第2实施方式的双电层电容器的俯视图。
图9是图8B的部位b的放大图。
具体实施方式
第1实施方式
以下,参照图1~图5,对作为本发明的第1实施方式的蓄电单元的双电层电容器(以下简称作“电容器”。)100以及具有电容器100的蓄电装置101进行说明。
如图1所示,电容器100包括:蓄电部件5,其用于储存电荷;容器10,其用于将蓄电部件5和电解液一起收纳;充电用的受电天线6(充电用受电天线6),其连接于蓄电部件5,用于以非接触的方式接受自供电装置20(参照图4)输送来的电力;及放电用的送电天线7(放电用送电天线7),其连接于蓄电部件5,用于以非接触的方式输送被储存在蓄电部件5中的电力。
如图3所示,蓄电装置101包括:电容器100;绕线框13,其用于收纳电容器100;及放电用的受电天线8(放电用受电天线8),其支承于绕线框13,用于以非接触的方式接受自放电用送电天线7输送来的电力。受电天线8连接于负载40(参照图4),该负载40消耗被充电到电容器100中的电力。负载40例如为电动机、二次电池。
蓄电部件5由层叠体构成,该层叠体通过将正极集电极、负极集电极、及介于正极集电极与负极集电极之间用于将两者隔离开的隔板以规定层数层叠起来而成。在正极集电极和负极集电极的表面涂敷有用于构成双电层的活性炭。在正极集电极和负极集电极上分别连接有引线2。同极的集电极的引线2被捆成束,并连接于极性与其极性相对应的电极端子3。
容器10包括:作为框体的矩形框11,其是用于包围蓄电部件5的矩形的框状构件;一对膜体12,其粘贴于矩形框11的两个面。矩形框11是树脂制的,膜体12是层压膜。层压膜是通过将树脂层覆盖于金属箔的金属层而成的多层构造的薄膜构件。矩形框11和膜体12通过将彼此的热塑性树脂热熔接而无间隙地接合起来。由此,电解液被密封在容器10的内部。
矩形框11在整个内周上具有槽部11a。在槽部11a内利用膜制构件16固定有充电用受电天线6、放电用送电天线7、及充放电控制电路基板15。以放电用送电天线7配置在外侧、充放电控制电路基板15配置在内侧的方式固定。膜制构件16使用电绝缘性和防水性优异的材料。
充电用受电天线6由二次自共振线圈6a和二次线圈6b构成。二次自共振线圈6a是两端开放的LC共振线圈。二次自共振线圈6a与供电装置20(参照图4)中的一次自共振线圈23b能够通过磁场共振相耦合。二次线圈6b与二次自共振线圈6a能够通过电磁感应相耦合。
放电用送电天线7构成为一次感应线圈7a,放电用受电天线8构成为二次感应线圈8a。一次感应线圈7a与二次感应线圈8a能够通过电磁感应相耦合。
充放电控制电路基板15是在电绝缘性的基板上构成有用于对蓄电部件5的充放电进行控制的充放电控制电路的电路基板。如图2所示,在充放电控制电路基板15上借助布线17连接有充电用受电天线6的二次线圈6b的两端,并且,借助布线18连接有一次感应线圈7a的两端。而且,在充放电控制电路基板15上还连接有正极的电极端子3和负极的电极端子3。
电极端子3由铝等具有导电性的金属构成,其形成为L字形状。电极端子3以其一个区域的外表面沿着膜体12的内表面、并且另一个区域的外表面沿着容器10的内表面、即膜制构件16的方式配置,电极端子3利用作为紧固构件的螺栓19固定于容器10,该螺栓19贯穿电极端子3的另一个区域并插入到膜制构件16中。螺栓19由铝等具有导电性的金属构成,其顶端部连接于充放电控制电路基板15。这样,电极端子3与充放电控制电路基板15借助螺栓19电连接。也可以不使用螺栓19而使用布线来使电极端子3与充放电控制电路基板15电连接。
如图3所示,二次感应线圈8a支承于矩形的作为框状构件的绕线框13。绕线框13具有用于收纳容器10的矩形的内周面13a,并且,绕线框13在外周面上具有槽部13b。二次感应线圈8a卷绕在槽部13b内。二次感应线圈8a的两端连接于消耗被充电到电容器100中的电力的负载40(参照图4)。绕线框13是通过将铁氧体、薄板钢板层叠起来而成的。只要一次感应线圈7a和二次感应线圈8a的电力传输效率在容许范围内,绕线框13也可以由树脂构成。在该情况下,能够实现电容器100的轻量化。
这样,二次感应线圈8a配置于与容器10独立的绕线框13。即,一次感应线圈7a配置在容器10内,相对于此,二次感应线圈8a配置在容器10外。
电容器100在蓄电部件5的正极集电极和负极集电极这两极分别利用由双电层产生的静电电容储存电荷,并释放所储存的电荷。充放电是通过充电用受电天线6和放电用送电天线7以非接触的方式进行的。因此,电容器100不具有贯穿容器10的电极端子,容器10中的密封部只是矩形框11与膜体12之间的接合部。
蓄电装置101能够仅通过在卷绕有二次感应线圈8a的绕线框13内配置电容器100来构成。
接着,参照图4,对用于控制蓄电部件5的充放电的充放电控制电路进行说明。
充放电控制电路包括:整流器30,其用于将来自充电用受电天线6的二次线圈6b的高频电力整流成直流;充电电路31,其用于将电力充电到蓄电部件5;放电电路32,其用于使电力从蓄电部件5放电到一次感应线圈7a;SOC传感器33,其用于检测蓄电部件5的充电量(SOC);及控制器34,其用于控制充电电路31和放电电路32。
控制器34由电力控制元件和微计算机构成,该微计算机具有中央运算处理装置(CPU)、只读存储器(ROM)、随机存取存储器(RAM)、及输入输出接口(I/O接口)。也可以利用多个模拟元件构成控制器34。
供电装置20包括:交流电源21;电力转换部22,其用于将交流电源21的电力转换为能够输送的电力;及充电用的送电天线23(充电用送电天线23),其用于将自电力转换部22供给的电力以非接触的方式输送至电容器100的充电用受电天线6。
交流电源21例如由系统电源构成。电力转换部22包括:振荡电路22a,其用于产生规定的高频电力,驱动电路22b,其用于将交流电源21的输出电力转换为振荡电路22a的高频电力并输出至充电用送电天线23。
充电用送电天线23包括一次线圈23a和与一次线圈23a能够通过电磁感应相耦合的一次自共振线圈23b。一次线圈23a通过电磁感应将自驱动电路22b接收到的电力传送至一次自共振线圈23b。一次自共振线圈23b是两端开放的LC共振线圈。
当供电装置20工作时,充电用送电天线23的一次自共振线圈23b与电容器100的充电用受电天线6的二次自共振线圈6a通过磁场共振相耦合,自充电用送电天线23向充电用受电天线6输送电力。在电容器100中,利用整流器30将充电用受电天线6所接收到的高频电力转换成直流,并经由充电电路31储存到蓄电部件5中。此时,控制器34根据来自用于检测蓄电部件5的充电量的SOC传感器33的充电量信号,以不使蓄电部件5过充电的方式控制充电电路31。
当蓄电部件5所储存的电力被供给至负载40时,电容器100的一次感应线圈7a与蓄电装置101的二次感应线圈8a通过电磁感应相耦合,蓄电部件5所储存的电力经由放电电路32从一次感应线圈7a被输送至二次感应线圈8a。二次感应线圈8a所接收到的高频电力被整流器41转换成直流,并被供给到负载40。
在此,在负载40未与电容器100连接的情况下,若不使放电电路32停止,则充电到蓄电部件5中的电力可能会被浪费地消耗掉。因此,在负载40上连接有用于检测负载40的负载状态的负载检测器42。负载检测器42的检测结果经由绝缘接口43被输出至控制器34。控制器34根据负载检测器42的检测结果来判定负载40的负载状态,从而控制放电电路32的动作。因而,在负载40未与电容器100连接的情况下,负载检测器42检测出负载40无负载,控制器34控制放电电路32使其停止,因此,能够防止电力被浪费地消耗掉。
绝缘接口43与负载检测器42和控制器34电绝缘,并且,能够将检测信号从负载检测器42传递至控制器34。
也可以代替设置负载检测器42,而将电容器100的一次感应线圈7a用作负载检测器。在该情况下,控制器34根据一次感应线圈7a的电压或者电流来判定负载40的负载状态,从而控制放电电路32的动作。采用这样的结构,能够省略绝缘接口43和连接于负载40的负载检测器42,能够使构造简化。
接着,参照图5,对将蓄电装置101应用于车辆50的情况下的、蓄电装置101的使用例进行说明。
车辆50包括结合于车轮的电动机51、电动机51的作为动力源的二次电池52、用于向二次电池52供给电力的作为辅助电源的蓄电装置101。在该例中,二次电池52相当于图4所示的负载40。
例如,在二次电池52的充电量降低了的情况下,使车辆50停止在蓄电装置101与供电装置20相对峙的供电位置并使供电装置20工作。由此,充电用送电天线23的一次自共振线圈23b与电容器100的充电用受电天线6的二次自共振线圈6a通过磁场共振相耦合,并以非接触的方式将电力从交流电源21供给至电容器100来对电容器100进行快速充电。
当结束对电容器100充电之后,在车辆50的行驶过程中,将电力以非接触的方式从电容器100供给至二次电池52,花费相对较长的时间对二次电池52进行充电。
这样,在车辆50的作为驱动源的二次电池52的充电量下降了的情况下,利用供电装置20对作为辅助电源的蓄电装置101进行快速充电,之后,利用蓄电装置101对二次电池52进行充电。
作为蓄电装置101的其他使用例,也可以将蓄电装置101用作电动机51的动力源。在该情况下,在车辆50制动时,电动机51作为发电机在车轮的转矩的作用下被驱动而进行再生发电,该再生电力被充到电容器100中。在该例中,电动机51相当于图4所示的负载40,并且也相当于供电装置20。
蓄电装置101并不限于车辆搭载用。蓄电装置101以非接触的方式进行充放电,且充放电电流相对较小。因而,优选用于即使充放电电流较小也能够满足使用的用途。例如也能够用作电子设备的电源、辅助电源。
采用以上的第1实施方式,能够起到以下所示的作用效果。
蓄电部件5的充放电利用配置在容器10内的充电用受电天线6和放电用送电天线7以非接触的方式进行,由于电极端子3并不是贯穿容器10的构造,因此,能够防止电解液从容器10中泄漏、气体从外部进入到容器10内。因而,能够提高电容器100的可靠性和安全性。
而且,由于电极端子3并不是贯穿容器10的构造,因此,能够使层叠有许多个电容器100而成的模块紧凑地构成。
而且,由于电极端子3并不是贯穿容器10的构造,因此,容易确保其绝缘性,并且,不会在维护、管理电容器100和蓄电装置101时发生触电。
而且,即使将许多个电容器100层叠起来,也不需要使电容器100彼此电连接,因此,组装变得容易。
而且,蓄电装置101是将电容器100收纳于绕线框13的结构,因此,能够极其简单地更换电容器100。例如,在电容器100发生了故障的情况下,仅将被收纳于绕线框13的电容器100取出,并将其他电容器100收纳在绕线框13内即可,不需要拆除、安装电布线的作业。而且,即使在卷绕于绕线框13的二次感应线圈8a发生了短路的情况下,其也不会对电容器100产生影响。
以下,对以上所说明的第1实施方式的变形例进行说明。
(1)在将多个电容器100层叠起来而构成模块的情况下,如图6所示,也可以将多个层叠起来的电容器100收纳在单一的绕线框13内。即,也可以使多个电容器100使用共用的一个绕线框13。在该情况下,绕线框13以在电容器100的厚度方向上延伸的方式形成,在绕线框13的外周卷绕有一个二次感应线圈8a。这样,二次感应线圈8a也通用于多个电容器100。
(2)也可以不是将膜体12粘贴在矩形框11的两个面的结构,而是如图7所示,使一对膜体12相面对,并将彼此的外缘部接合起来。在该情况下,矩形框11被收纳在膜体12内。在将电容器100收纳在绕线框13内时,膜体12外周的接合部12a弯折。
(3)在上述第1实施方式中,对蓄电单元是电容器的情况进行了说明,但是,蓄电单元也可以是镍氢电池、锂离子电池等其他蓄电单元。
(4)在上述第1实施方式中,充电用送电天线23与充电用受电天线6之间的耦合采用了通过磁场共振来进行的送电方式,放电用送电天线7与放电用受电天线8之间的耦合采用了通过电磁感应来进行的送电方式。但是,非接触的送电方式并不限于此,也可以是:充电用送电天线23与充电用受电天线6之间的耦合采用通过电磁感应来进行的送电方式,放电用送电天线7与放电用受电天线8之间的耦合采用通过磁场共振来进行的送电方式。而且,也可以采用微波等其他送电方式。
第2实施方式
以下,参照图8及图9,对本发明的第2实施方式的电容器200、以及具有电容器200的蓄电装置201进行说明。以下,以与上述第1实施方式的电容器100及蓄电装置101的不同点为中心进行说明,对与电容器100及蓄电装置101相同的结构,在附图中标注相同的附图标记并省略其说明。
在电容器200中,容器11的矩形框11在整个内周上具有槽部11a,并且,还在其整个外周上具有槽部11b。放电用送电天线7和充放电控制电路基板15与第1实施方式的电容器100同样地利用膜制构件16固定在槽部11a内,相对于此,充电用受电天线6的二次自共振线圈6a和二次线圈6b安装在膜体12内。
具体地讲,二次自共振线圈6a和二次线圈6b通过图案印刷而分别预先形成在电绝缘性薄膜上。形成有二次自共振线圈6a的电绝缘性薄膜预先插入在用于构成膜体12的层压膜的两个树脂层之间。形成有二次线圈6b的电绝缘性薄膜预先插入在层压膜的其他两个树脂层之间。
在充放电控制电路基板15上借助布线17连接有充电用受电天线6的二次线圈6b的两端,并且,借助布线18连接有一次感应线圈7a的两端。而且,在充放电控制电路基板15上还连接有正极的电极端子3和负极的电极端子3。
电极端子3形成为板状。电极端子3的一端连接于极性与其极性相对应的集电极的引线2,电极端子3的另一端插入于膜制构件16,直接连接于充放电控制电路基板15。这样,在本实施方式中,电极端子3与充放电控制电路基板15直接电连接。
在蓄电装置201中,不具有绕线框13,二次感应线圈8a支承于容器10的外周。具体地讲,二次感应线圈8a卷绕在矩形框11的外周的槽部11b内。
这样,一次感应线圈7a配置在矩形框11的内周的槽部11a内,二次感应线圈8a配置在矩形框11的外周的槽部11b内。这样,蓄电装置201与第1实施方式的蓄电装置101不同,其构成为一体的装置。因而,无法将电容器200从蓄电装置201中拆除。与此相应地,与第1实施方式的蓄电装置101相比较,能够使蓄电装置201更紧凑地构成。
充电用受电天线6及放电用送电天线7的配置方式并不限于第1实施方式和第2实施方式所说明的形态。
作为其他形态,也可以利用膜制构件16将充电用受电天线6固定在矩形框11的槽部11a内、并将放电用送电天线7组装在膜体12内。
而且,也可以将充电用受电天线6和放电用送电天线7这两者组装在膜体12内。在该情况下,在矩形框11的槽部11a内仅配置有充放电控制电路基板15。
以上,对本发明的实施方式进行了说明,但是,上述实施方式仅表示了本发明的应用例的一部分,其主旨并不是将本发明的保护范围限定于上述实施方式的具体结构。
本申请基于2010年12月13日向日本国专利局提出申请的日本特愿2010-276701要求优先权,参照该申请的全部内容并编入本说明书。
Claims (14)
1.一种蓄电单元,其中,
该蓄电单元包括:
容器,其用于将蓄电部件和电解液一起收纳;
充电用的受电天线,其连接于上述蓄电部件,用于以非接触的方式接受自供电装置输送来的电力;
放电用的送电天线,其连接于上述蓄电部件,用于以非接触的方式输送该蓄电部件所储存的电力,
上述受电天线和上述送电天线配置在上述容器内。
2.根据权利要求1所述的蓄电单元,其中,
上述容器包括:框体,其在内周具有槽部,并用于包围上述蓄电部件;膜体,其粘贴于上述框体的两个面,
上述受电天线和上述送电天线配置在上述槽部内,并由膜制构件固定。
3.根据权利要求1所述的蓄电单元,其中,
上述容器包括:框体,其在内周具有槽部,并用于包围上述蓄电部件;膜体,其粘贴于上述框体的两个面,
上述受电天线组装在上述膜体内,上述送电天线配置在上述槽部内,并由膜制构件固定。
4.根据权利要求1所述的蓄电单元,其中,
上述容器包括:框体,其在内周具有槽部,并用于包围上述蓄电部件;膜体,其粘贴于上述框体的两个面,
上述受电天线配置在上述槽部内,并由膜制构件固定,上述送电天线组装在上述膜体内。
5.根据权利要求1所述的蓄电单元,其中,
上述容器包括:框体,其在内周具有槽部,并用于包围上述蓄电部件;膜体,其粘贴于上述框体的两个面,
上述受电天线和上述送电天线安装在上述膜体内。
6.根据权利要求2~5中任一项所述的蓄电单元,其中,
该蓄电单元还包括:电极端子,其连接于上述蓄电部件的集电极;及充放电控制电路基板,其是在电绝缘性的基板上构成有充放电控制电路的电路基板,该充放电控制电路用于对上述蓄电部件的充放电的进行控制,
上述充放电控制电路基板配置在上述槽部内,并由上述膜制构件固定;
在上述充放电控制电路基板上连接上述受电天线和上述送电天线,并且,连接上述电极端子。
7.根据权利要求6所述的蓄电单元,其中,
该蓄电单元还包括:紧固构件,其具有导电性,用于将上述电极端子固定于上述膜制构件;
上述充放电控制电路基板与上述电极端子借助上述紧固构件电连接。
8.一种蓄电装置,其中,
该蓄电装置包括:
权利要求1~7中任一项所述的蓄电单元;及
放电用的受电天线,其用于以非接触的方式接受自放电用的上述送电天线输送来的电力,
放电用的上述受电天线配置在上述容器外。
9.根据权利要求8所述的蓄电装置,其中,
该蓄电装置还包括:
绕线框,其用于支承放电用的上述受电天线,
上述蓄电单元被收纳在上述绕线框内。
10.根据权利要求9所述的蓄电装置,其中,
将多个上述蓄电单元层叠起来并收纳在单一的上述绕线框内。
11.根据权利要求8所述的蓄电装置,其中,
放电用的上述受电天线支承于上述容器的外周。
12.一种蓄电装置,其中,
该蓄电装置包括:
权利要求6或7所述的蓄电单元;
放电用的受电天线,其用于以非接触的方式接受自放电用的上述送电天线输送来的电力;及
负载检测器,其用于检测放电用的上述受电天线所连接的负载的负载状态,
上述充放电控制电路根据上述负载检测器的检测结果来判定上述负载的负载状态,从而对从上述蓄电部件向放电用的上述送电天线的放电进行控制。
13.根据权利要求12所述的蓄电装置,其中,
上述负载检测器的检测结果经由绝缘接口被输出至上述充放电控制电路。
14.根据权利要求12所述的蓄电装置,其中,
将放电用的上述送电天线用作上述负载检测器,
上述充放电控制电路根据放电用的上述送电天线的电压或者电流来判定上述负载的负载状态,从而对从上述蓄电部件向放电用的上述送电天线的放电进行控制。
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JP2010276701A JP5670168B2 (ja) | 2010-12-13 | 2010-12-13 | 蓄電セル及び蓄電装置 |
PCT/JP2011/077396 WO2012081384A1 (ja) | 2010-12-13 | 2011-11-28 | 蓄電セル及び蓄電装置 |
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EP (1) | EP2654178B1 (zh) |
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JP6420025B2 (ja) * | 2013-03-08 | 2018-11-07 | マクセルホールディングス株式会社 | 非接触電力伝送装置及び非接触電力伝送方法 |
JP6366318B2 (ja) * | 2014-03-26 | 2018-08-01 | マクセルホールディングス株式会社 | 非接触電力伝送手段を備えた電源 |
US10029551B2 (en) | 2015-11-16 | 2018-07-24 | Kubota Corporation | Electric work vehicle, battery pack for electric work vehicle and contactless charging system |
JP7188854B2 (ja) * | 2020-01-06 | 2022-12-13 | 東芝エネルギーシステムズ株式会社 | 直流電流遮断装置 |
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US9208957B2 (en) | 2015-12-08 |
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JP5670168B2 (ja) | 2015-02-18 |
CN103262388B (zh) | 2016-08-10 |
US20130266828A1 (en) | 2013-10-10 |
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WO2012081384A1 (ja) | 2012-06-21 |
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