CN114270609A - 电源装置和使用该电源装置的电动车辆以及蓄电装置 - Google Patents
电源装置和使用该电源装置的电动车辆以及蓄电装置 Download PDFInfo
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- CN114270609A CN114270609A CN202080056401.2A CN202080056401A CN114270609A CN 114270609 A CN114270609 A CN 114270609A CN 202080056401 A CN202080056401 A CN 202080056401A CN 114270609 A CN114270609 A CN 114270609A
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Abstract
为了提供即使覆盖电池层叠体的顶罩变长也能够稳定地安装于电池层叠体的电源装置和使用该电源装置的电动车辆以及蓄电装置,电源装置具有:电池集合体(2),其具有多个电池单体(1)并且沿着一个方向延伸;以及绝缘性的罩部(60),其将电池集合体(2)的沿着一个方向延伸的一个面覆盖。另外,罩部(60)沿着延伸方向形成有多个用于将罩部固定于电池集合体(2)的上表面侧的固定件,罩部(60)包括金属制的芯材(63)。
Description
技术领域
本发明涉及电源装置和使用该电源装置的电动车辆以及蓄电装置。
背景技术
电源装置被用于电动车辆的驱动用的电源装置、蓄电用的电源装置等。在这样的电源装置中层叠有多片能够充放电的多个电池单体。例如,如图15的立体图所示的电源装置900那样,针对将方形的外装罐的电池单体901和绝缘性的间隔件902交替地层叠而成的电池层叠体而言,在其两侧的端面分别配置有端板903,利用金属制的束紧条904对端板903彼此进行紧固。另外,在电池层叠体的上表面,利用绝缘性的树脂等设置顶罩905。以预定间隔利用螺纹件906、爪将这样的顶罩嵌合于电池层叠体的上表面。
近年来伴随着高容量化的要求,构成电池层叠体的电池单体的层叠数量倾向于增多。其结果是,电池层叠体的全长与电池单体的数量相应地变长,顶罩的长度也随之而变长。然而,若相对于顶罩的宽度而言使长度变长,则纵横的长宽比会不协调,树脂成型而得到的顶罩的起伏、翘曲会变大。其结果是存在螺纹件、爪的位置发生变化而无法进行嵌合的问题。另外也想到了如下情况:在顶罩有起伏、翘曲时,会形成顶罩与电池层叠体之间的间隙,在任一电池单体万一发生热失控时,空气会自该间隙进入,发生氧燃烧而产生火焰。
为了避免这样的成型的精度下降,也可以考虑对顶罩进行分割,但在该情况下会存在部件数量增加而使组装工时增加、成本上升等问题。
现有技术文献
专利文献
专利文献1:国际公开第2018/012224号
发明内容
发明要解决的问题
本发明的目的之一在于提供一种即使覆盖电池层叠体的顶罩变长,也能够稳定地安装于电池层叠体的电源装置和使用该电源装置的电动车辆以及蓄电装置。
用于解决问题的方案
根据本发明的第1方案的电源装置,可以是,该电源装置具有:电池集合体,其具有多个电池单体并且沿着一个方向延伸;以及绝缘性的罩部,其将所述电池集合体的沿着一个方向延伸的一个面覆盖,其中,所述罩部沿着延伸方向形成有多个用于将所述罩部固定于所述电池集合体的上表面侧的固定件,所述罩部包括金属制的芯材。根据上述结构,即使绝缘性的罩部成为延伸的细长形状,也能够利用金属制的芯材来抑制翘曲、起伏,从而将固定件形成于预定位置,从而能够提高相对于电池集合体的固定的可靠性。
另外,根据第2方案的电源装置,可以是在上述结构的基础上,所述多个电池单体各自的外装罐设为方形,所述电池集合体是层叠多个电池单体而成的层叠体,所述电源装置还具有:一对端板,其将层叠所述多个电池单体而成的所述电池层叠体的两侧端面覆盖;以及隔板,其在所述多个电池单体层叠的状态下被夹在该电池单体彼此之间,所述隔板在对所述罩部进行了固定的状态下的与所述固定件对应的位置具有接纳该固定件的接纳部。
另外,根据第3方案的电源装置,可以是在上述任一结构的基础上,所述电源装置还具有保持部,该保持部设于所述电池单体的层叠体的上表面与所述罩部之间,所述保持部在对所述罩部进行了固定的状态下的与所述固定件对应的位置形成有接纳该固定件的接纳部。
再者,根据第4方案的电源装置,可以是在上述任一结构的基础上,所述多个电池单体分别具有根据内部的压力变化而开阀的安全阀,所述电池集合体的上表面设为所述多个电池单体的设有所述安全阀的面。根据上述结构,即使万一安全阀开阀而使高压的气体自电池层叠体的上表面释放,也能够利用芯材来抑制罩部的变形,从而实现安全性的提高。
此外,根据第5方案的电源装置,可以是在上述任一结构的基础上,所述罩部为树脂制,所述芯材形成为板状。根据上述结构,由于芯材为板状,因此能够无间隙地覆盖电池集合体的整个上表面。由此,能够增加电池集合体的上表面侧的强度,提高对电池集合体的可靠性。另外,能够利用树脂制的罩部确保绝缘性,并且,即使罩部成为延伸的细长形状也能够利用板状的芯材来抑制罩部的翘曲、起伏。
此外,根据第6方案的电源装置,可以是在上述任一结构的基础上,所述板状的芯材的至少局部自所述罩部显露。根据上述结构,能够提高从芯材的自罩部显露的部分向外部的散热性。
此外,根据第7方案的电源装置,可以是在上述任一结构的基础上,所述板状的芯材在其两端部具有显露部,该显露部自所述罩部显露并且分别伸展至所述一对端板的上表面而进行固定。根据上述结构,除了罩部的固定件之外芯材也固定于端板,因此罩部不易自电池层叠体侧脱落。
此外,根据第8方案的电源装置,可以是在上述任一结构的基础上,所述罩部为树脂制,所述芯材形成为分离开地埋设于所述树脂的多个棒状。根据上述结构,能够减小芯材的体积,从而抑制因添加芯材而导致的重量增加。
此外,根据第9方案的电源装置,可以是在上述任一结构的基础上,所述罩部通过嵌入成型所述芯材而成。
此外,根据第10方案的电源装置,可以是在上述任一结构的基础上,所述罩部形成为矩形形状,该矩形形状的长宽比设为5以上。
根据本发明的第11方案的车辆,可以是,其具有上述任一方案的电源装置,其中,该车辆具有所述电源装置、自该电源装置被供给电力的行驶用的电动机、搭载所述电源装置和所述电动机的车辆主体、以及由所述电动机驱动而使所述车辆主体行驶的车轮。
根据本发明的第12方案的蓄电装置,可以是,其具有上述任一方案的电源装置,其中,该蓄电装置具有所述电源装置、以及对向该电源装置的充放电进行控制的电源控制器,利用所述电源控制器能够利用来自外部的电力向所述电池单体充电,并且利用该电源控制器进行控制从而对该电池单体进行充电。
附图说明
图1是表示实施方式1的电源装置的立体图。
图2是图1的电源装置的分解立体图。
图3是表示图2的电池单体和隔板的立体图。
图4是图1的电源装置的沿IV-IV线的带局部放大图的剖视图。
图5是变形例的电源装置的局部分解立体图。
图6是图2的罩部的沿VI-VI线的带局部放大图的横剖视图。
图7是图1的电源装置的沿VII-VII线的带局部放大图的示意纵剖视图。
图8是实施方式2的电源装置的带局部放大图的示意纵剖视图。
图9是实施方式3的罩部的带局部放大图的横剖视图。
图10是实施方式3的电源装置的带局部放大图的示意纵剖视图。
图11是实施方式4的罩部的带局部放大图的横剖视图。
图12是表示在利用发动机和电动机行驶的混合动力车搭载电源装置的例子的框图。
图13是表示在仅利用电动机行驶的电动汽车搭载电源装置的例子的框图。
图14是表示应用于蓄电用的电源装置的例子的框图。
图15是表示以往的电源装置的立体图。
具体实施方式
以下,基于附图说明本发明的实施方式。不过,以下所示的实施方式是用于将本发明的技术思想具体化的例示,本发明并不限定于以下的实施方式。另外,本说明书决没有将权利要求书所示的构件限定为实施方式的构件。特别是,对于实施方式中记载的构成构件的尺寸、材质、形状、其相对的配置等,只要没有特别特定的记载,就并非旨在将本发明的范围仅限定于此,而只不过是说明例。此外,存在为了明确说明而对各附图所示的构件的大小、位置关系等进行夸张的情况。再者,在以下的说明中,相同的名称、附图标记表示相同或者实质相同的构件,适当省略详细说明。再者,构成本发明的各要素既可以设为由同一构件构成多个要素从而以一个构件兼用作多个要素的形态,也能够相反地由多个构件分担实现一个构件的功能。另外,在一部分实施例、实施方式中说明的内容能够用于其他实施例、实施方式等。
实施方式的电源装置用于搭载于混合动力车、电动汽车等电动车辆而向行驶用电动机供给电力的电源、对太阳能发电、风力发电等自然能源的发电电力进行蓄电的电源、或者对深夜电力进行蓄电的电源等各种用途,特别是能用作适合于大电力、大电流的用途的电源。在以下的例子中,对应用于电动车辆的驱动用的电源装置的实施方式进行说明。
[实施方式1]
图1~图4、图6、图7表示本发明的实施方式1的电源装置。在这些图中,图1示出了表示实施方式1的电源装置的立体图,图2示出了图1的电源装置的分解立体图,图3示出了表示图2的电池单体和隔板的立体图,图4示出了图1的电源装置的沿IV-IV线的带局部放大图的剖视图,图6示出了图2的罩部的沿VI-VI线的横剖视图,图7示出了图1的电源装置的沿VII-VII线的示意纵剖视图。这些图所示的电源装置100具有:电池层叠体2,其层叠多个电池单体1而成;一对端板3,其配置于该电池层叠体2的层叠方向上的两端;一对紧固构件4,其两端连结于一对端板3并对电池层叠体2进行紧固;以及罩部60,其将电池层叠体2的上表面覆盖。
(电池单体1)
如图2所示,电池单体1是宽度W比厚度T宽也就是厚度比宽度薄的方形电池,其沿厚度方向层叠而形成电池层叠体2。电池单体1例如能够采用锂离子二次电池。另外,电池单体也能够采用镍氢电池、镍镉电池等能够充电的所有二次电池。在电池单体1中,正负的电极板和电解液一起收纳于密闭构造的外装罐1a。对于外装罐1a而言,通过将铝、铝合金等的金属板冲压成形为方形,并且使开口部由封口板1b气密地密闭。封口板1b是与方形的外装罐1a相同的铝、铝合金并且在两端部固定有正负的电极端子11。再者,封口板1b在正负的电极端子11之间设有气体排出阀13,该气体排出阀13是根据电池单体1各自的内部的压力变化而开阀的安全阀。
多个电池单体1以各电池单体1的厚度方向成为层叠方向的方式进行层叠从而构成电池层叠体2。此时,通过使层叠数量比通常情况下多,从而能够实现电池层叠体2的高输出化。在该情况下,电池层叠体2成为在层叠方向上延伸的长条的结构。将电池单体1的设有正负的电极端子11的端子面10配置于同一平面地对多个电池单体1进行层叠,从而形成电池层叠体2。并且,将电池层叠体2的上表面设为多个电池单体1的设有气体排出阀13的面。
(隔板30)
如图2和图3所示,在电池层叠体2中,在层叠的电池单体1之间夹着隔板30。另外,隔板30具有构成隔板30的主表面的安装板部31、设于安装板部31的上侧周缘的上周壁32、以及设于安装板部31的短边侧的两侧部的纵周壁33。
安装板部31成为被夹在彼此相邻的电池单体1之间的部分。该安装板31形成为与电池单体1的相对面大致相等大小的板状,将该隔板12层叠于彼此相邻的电池单体1之间从而使相邻的电池单体1彼此绝缘。另外,安装板部31与电池单体1的相对面大致同样地形成为具有在宽度W方向上较长的长边和短边的矩形形状。
上周壁32形成于安装板部31的上端并且卡定于电池单体1的封口板1b。在该上周壁32的上表面具有后述的隔板侧卡定片34。
另一方面,纵周壁33形成为与安装板部31正交。纵周壁33的下侧的一端部朝向相邻的一个电池单体1稍微突出,并且沿着安装板部31的底边局部弯折。通过形成为这样的形状,能够易于使隔板30自支承,并且能够利用突出部分和弯折的部分对相邻的电池单体1的下侧角部进行保持,能够更可靠地进行相邻的电池单体1的安装。
(电池层叠体2)
在电池层叠体2中,在相邻的电池单体1的正负的电极端子11连接有金属制的汇流条14,利用汇流条14将多个电池单体1串联或并联地、或者串联和并联地连接。也可以在该电池层叠体2与汇流条之间配置汇流条保持件。通过使用汇流条保持件,从而能够使多个汇流条相互绝缘并且使电池单体的端子面和汇流条绝缘,并且能够将多个汇流条配置于电池层叠体的上表面的固定位置。
通过对金属板进行裁切、加工而将汇流条14制造成预定的形状。构成汇流条的金属板能够使用电阻较小且轻量的金属,例如铝板、铜板、或者它们的合金。不过,汇流条的金属板也能够使用电阻较小且轻量的其他金属、它们的合金。
(端面间隔件12)
在电池层叠体2的两端面隔着端面间隔件12而配置有端板3。如图2所示,端面间隔件12配置于电池层叠体2与端板3之间,从而使端板3和电池层叠体2绝缘。端面间隔件12能够由与上述的隔板30相同的材质构成。
(端板3)
如图2所示,端板3配置于电池层叠体2的两端,并且借助沿着电池层叠体2的两侧面配置的紧固构件4紧固。端板3配置于电池层叠体2的电池单体1的层叠方向上的两端且是端面间隔件12的外侧的位置,自两端夹着电池层叠体2。另外,端板3能够设为金属制。再者,能够使各端板3的上端部分的刚度比中央部分的刚度强。
端板3的外形设为四边形,其与电池层叠体2的端面相对地配置。图2所示的端板3形成为与电池单体1的外形大致相等的外形。即,针对图中所示的端板3而言,其左右方向上的宽度设为和电池单体1的宽度相等,并且其上下方向上的高度设为和电池单体1的高度相等。此外在本说明书中,上下方向是指图中的上下方向,左右方向是图中的左右方向,是指与电池的层叠方向正交的水平方向。
对该端板进行固定的方法没有特别限定。例如,图1和图2所示的端板3形成有多个用于固定端板3的贯通孔。另外,端板3具有供紧固件19插入的第一贯通孔36,该紧固件19对紧固构件4的紧固构件侧固定部41进行固定。图中所示的端板3开设有多个贯通孔来作为第一贯通孔36。在图中的端板3的两侧部且是与紧固构件侧固定部41相对的位置,上下分离开地设有多个第一贯通孔36。在图2的端板3中,沿着两侧各设有3个第一贯通孔36,整体上设有6个第一贯通孔36。针对该端板3而言,贯穿配置于外周面的紧固构件侧固定部41的紧固件19插入于第一贯通孔36。插入于第一贯通孔36的紧固件19被固定于第一贯通孔36,从而将紧固构件侧固定部41固定于固定位置。
(紧固构件4)
如图2所示,紧固构件4沿着电池层叠体2的层叠方向延伸,其两端固定于在电池层叠体2的两端面配置的端板3,借助该端板3在层叠方向上对电池层叠体2进行紧固。紧固构件4是沿着电池层叠体2的侧面的具有预定宽度和预定厚度的金属板,与电池层叠体2的两侧面相对地配置。该紧固构件4能够使用铁等的金属板,优选能够使用钢板。由金属板构成的紧固构件4通过冲压成形等被弯折加工从而形成为预定的形状。
紧固构件4具有沿着电池层叠体2的侧面配置的紧固构件主体部40、以及在该紧固构件主体部40的两端被弯折并固定于端板3的外侧面的紧固构件侧固定部41。紧固构件主体部40形成为对电池层叠体2以及配置于该电池层叠体2的两端的端板3的大致整体进行包覆的大小的矩形形状。图1和图2所示的紧固构件主体部40无间隙地包覆电池层叠体2的侧面的大致整个面。不过,紧固构件主体部40也能够设有一个以上的开口部,从而使电池层叠体的侧面的局部显露。对于紧固构件4而言,为了将其两端固定于一对端板3,而将其两端部沿着端板3的外侧面地进行弯折加工从而设置紧固构件侧固定部41。对于图1和图2所示的紧固构件侧固定部41,其上下方向上的高度与紧固构件主体部40以及端板3的上下方向上的高度大致相等,对端板3的左右两侧部进行包覆。该紧固构件4借助插入于设于紧固构件侧固定部41的顶端的贯通孔42的紧固件19而固定于端板3。紧固构件4还具有弯折部44,该弯折部44沿着紧固构件主体部40的除了两端部以外的中间部分的上端部对电池层叠体2的上表面和下表面进行保持。弯折部44对构成电池层叠体2的电池单体1的上表面和下表面进行保持,从而抑制各电池单体1的端子面10的位置上下偏移。
(罩部60)
如图1~图3所示,电源装置100具有罩部60,该罩部60对电池层叠体2的上方且是电池层叠体2的上表面的部分进行覆盖。罩部60是具有长边和短边的大致长条的矩形形状。另外优选的是,矩形形状的长边和短边的长宽比设为5以上。由此,能够应对电池单体的层叠数量较多的长条的电池层叠体2。具体而言,长边为大致1m~1m20cm左右且短边为大致140mm~170mm左右。
如图2的分解立体图所示,罩部60具有主要由绝缘性的树脂构成的罩主体部61、以及卡定爪部62。
(卡定爪部62)
卡定爪部62是用于将罩部60固定于隔板30的固定件的一个方式。该卡定爪部62的位置和数量没有特别限定。作为一例,如图1所示,在罩部60中,沿着延伸方向具有卡定爪部62,在两端部中的右侧偏置有卡定爪部62C,在两端部中的左侧偏置有卡定爪部62A。另外在中央部分具有卡定爪部62B。在延伸方向上相邻的卡定爪部62大致等间隔地设置。通过等间隔地设置卡定爪部62,从而能够将罩部60平衡地固定于电池层叠体2侧。不过,本发明不限于等间隔地设置卡定爪部62的形态。例如,也可以在想要强化固定的部位缩小间隔地设置。在图1的电源装置中,设置为缩小跟前侧的卡定爪部62C的间隔,从而实现右侧端部的固定的强化。
如图4的剖视图和图6的剖视图所示,各卡定爪部62形成为爪状。并且,卡定爪部62自罩主体部61向下方伸出。具体而言,形成有自罩主体部61朝向后述的隔板侧卡定片34稍微倾斜并且向下方伸出的卡定爪伸出部62a、以及设于卡定爪伸出部62a的顶端侧的卡定爪突起部62b。卡定爪突起部62b具有卡定爪倾斜面62ba和卡定爪抵接面62bb,该卡定爪倾斜面62ba自卡定爪伸出部62a的顶端朝向隔板侧卡定片34向斜上方倾斜,该卡定爪抵接面62bb与罩主体部61大致平行。
该卡定爪突起部62b只要能够与对应的接纳部(详细情况见后述)卡合,突出方向就没有特别限定。例如,在图6的罩部60中设为使卡定爪部62A的卡定爪突起部62b朝向右侧。另一方面,设为使卡定爪部62C的卡定爪突起部62b朝向左侧。再者,对于设于罩部60的中央部分的卡定爪部62B的卡定爪突起部62b而言,其在图6的例子中是朝向右侧,但其朝向左右任一方向即可。
(隔板侧卡定片34)
另一方面,隔板30在上侧周壁32的上表面具有接纳罩部60的卡定爪部62的接纳部。隔板侧卡定片34是接纳卡定爪部62的接纳部的一个形态。如图3和图4所示,隔板侧卡定片34形成为能够和卡定爪部62卡定的爪状。并且,隔板侧卡定片34自上侧周壁32的上表面向上方伸出。具体而言,形成有与上侧周壁32的上表面大致垂直地形成的隔板侧伸出部34a、以及设于隔板侧伸出部34a的顶端侧的隔板侧突起部34b。隔板侧突起部34b具有隔板侧倾斜面34ba和隔板侧抵接面34bb,该隔板侧倾斜面34ba自隔板侧伸出部34a的顶端朝向卡定爪部62向斜下方倾斜,该隔板侧抵接面34bb与上侧周壁32的上表面大致平行。
并且,如图4所示,在将罩部60安装于电池层叠体2侧时,卡定爪抵接面62bb和隔板侧抵接面34bb抵接并嵌合。由此,能够将罩部60固定于隔板30。根据这样的结构,能够可靠地将罩部60固定于电池层叠体2侧。能够使罩部60的机械稳定性增加,并且在排出气体时即使在高压气体的压力下罩部50也不易脱落。
[变形例]
(保持部50)
另外,本发明并不限定于使用隔板来作为将罩部60固定于电池层叠体2侧的构造的形态。例如,也可以设置保持部来将罩部60固定于保持部。作为一例,如图5所示,变形例1的保持部50设于电池层叠体2的上表面与罩部60之间,并且覆盖电池层叠体2的整个上表面。保持部50在沿着延伸方向的两端侧和中央部分形成有卡定孔51,该卡定孔51是接纳上述的罩部60的卡定爪部62的接纳部。即,保持部50在与卡定爪部62对应的位置开设有供该卡定爪部62插入的卡定孔51。将卡定爪部62插入于该卡定孔51,使罩部侧倾斜部62b的顶端部分与保持部50的下表面侧抵接,从而将罩部60卡定于保持部50。根据这样的结构也能够可靠地将罩部60固定于保持部50。能够使罩部60的机械稳定性增加,并且在排出气体时即使在高压气体的压力下罩部50也不易脱落。
通过将该保持部50兼用作对汇流条进行保持的汇流条保持件,从而能够进一步简化结构。另外,也可以在保持部50设置对电池单体1的电压进行检测的电压检测部等。此外优选的是,保持部50由绝缘性的树脂形成,从而使电池层叠体2不发生短路。
在变形例1中,利用保持部50对罩部60进行固定,因此不需要在隔板设置隔板侧卡定片。因此,隔板只要由绝缘材料制作成较薄的板状或片状即可。由此,能够简化隔板的结构。不过,隔板的大小、形状没有特别限定。例如,隔板也可以形成为在电池单体1与间隔件之间形成有冷却气体的流路的形状。另外,也能够利用绝缘材料包覆电池单体1的表面。例如,也可以利用PET树脂等的收缩管或收缩膜对电池单体的除了电极部分以外的外装罐1a的表面进行热熔接。
(芯材63)
再者,如图6和图7所示,在罩部60中,在树脂制的罩主体部61嵌入成型有金属制的芯材63。罩主体部61的厚度CT为大致2mm~3mm左右。芯材63形成为比罩部60稍小的板状且是能够将电池层叠体2的整个上表面侧大致覆盖的形状。
通常,在为了使长宽比较高的长条的罩部具有绝缘性而利用树脂来进行成形时,容易产生起伏、翘曲。其结果是,存在卡定爪部的位置产生偏差的情况,存在对固定于保持部的固定造成障碍的情况。另外,外部的空气容易自该起伏或翘曲的部分进入。并且,万一在将电池单体1的气体排出阀13打开而使高压的气体自电池层叠体2的上表面释放出来的情况下,外部的空气会向电池层叠体2侧的内部供给,从而导致状态进一步恶化。因此,在本实施方式中,在罩部60埋设有芯材63,从而即使树脂制的罩部60成为延伸的细长形状,也能够利用金属制的芯材63来抑制翘曲、起伏,能够将卡定爪部62形成于期望的位置,从而能够提高相对于电池集合体2的固定的可靠性。另外,能够避免外部的空气自罩部60的翘曲、起伏供给,能够提高安全性。
该芯材63采用导热性和刚度优异的金属板。例如采用铁板、不锈钢、高强度板、铝板等。另外,除了采用板状的金属板以外,也可以采用网眼状、格子状。
[实施方式2]
在上述的实施方式1中,对将芯材63埋设于罩主体部61内的例子进行了说明。不过,本发明的芯材并不限定于上述形态。例如,也可以使芯材的局部自罩主体部显露。能够将显露的部位设为罩主体的长度方向上的端部、侧面。作为一例,图8的纵剖视图示出了实施方式2的罩部。在该例中,使芯材63B的长度方向上的两端部自罩主体部61突出。罩部60B的芯材63B具有自罩主体部61的长度方向上的两端部分别显露的一对显露部64。各显露部64具有显露片64a和显露片64b,该显露片64a自罩主体部61的端部向下方伸出,该显露片64b在端板3的上表面3a侧在水平方向上沿着端板3的上表面3a伸展。利用螺纹件65等将该显露片64b和端板3的上表面3a螺纹固定,从而能够将罩部60B固定于电池层叠体2侧。由此,在使用卡定爪部62的固定构造的基础上还将芯材63B固定于端板3,因此罩部60B更加不易自电池层叠体2侧脱落。特别是通过采用金属制的固定构造,从而使固定的机械强度稳定。另外,通过将金属制的端板和金属制的芯体固定在一起,还能够获得提高散热性的效果。
此外,在将芯材63B固定于端板3的上表面的情况下,也能够省略使用卡定爪部62的固定构造。
[实施方式3]
另外,使芯材自罩主体部显露的位置不限于罩主体的周围方向,也可以设为主表面侧。将这样的例子设为实施方式3的罩部60C并示于图9、图10。在该罩部60C中,使芯材63C自罩主体部61C的整个上表面暴露。通过使芯材63C自罩主体部61C的整个上表面暴露,能够增大使芯材63C自罩主体部61C显露的部分。其结果是,在罩部不易自电池层叠体侧脱落的效果的基础上,能够进一步提高自芯材63C的显露的部分向外部的散热性。
[实施方式4]
再者,本申请技术方案的金属制的芯材不限于上述的板状。例如,能够采用铁丝等线材、棒状的材料。在图11所示的芯材63D中,将多个线材63Da隔开预定间隔地沿着罩部60D的宽度方向进行埋设。线材63Da的直径为大致1mm~1.5mm左右。由此,能够减小芯材的体积,从而抑制由于添加芯材而导致的重量增加。特别是在注重燃料消耗的车载用途中是有利的。另外,通过增大芯材的表面积,还能够获得使芯材和罩部主体的紧密贴合性提高的效果。
另一方面,在上述的实施方式1~3中,使板状的芯材在电池集合体2的上表面侧扩展地进行覆盖,而不是如实施方式4的芯材那样在线材之间形成有间隙。因此,即使万一将高压的气体释放出来,也能够避免气体通过间隙而吹至电源装置的外部。
以上的电源装置100能够用作向使电动车辆行驶的电动机供给电力的车辆用的电源。作为搭载电源装置100的电动车辆,能够使用利用发动机和电动机这两者行驶的混合动力汽车、插电式混合动力汽车、或者仅利用电动机行驶的电动汽车等电动车辆,以上的电源装置100能用作上述车辆的电源。此外,对构筑了电源装置的例子进行说明,该电源装置是为了获得驱动电动车辆的电力而将上述的电源装置100串联、并联地连接许多个并且还附加了必要的控制电路而得到的大容量、高输出的电源装置。
(混合动力车用电源装置)
图12示出了在利用发动机和电动机这两者行驶的混合动力汽车搭载电源装置100的例子。该图所示的搭载有电源装置100的车辆HV具有车辆主体91、使该车辆主体91行驶的发动机96和行驶用的电动机93、由这些发动机96和行驶用的电动机93驱动的车轮97、向电动机93供给电力的电源装置100、以及对电源装置100的电池进行充电的发电机94。电源装置100借助DC/AC逆变器95连接于电动机93和发电机94。在对电源装置100的电池进行充放电的同时,车辆HV利用电动机93和发动机96这两者而行驶。电动机93在发动机效率较差的区域例如加速时、低速行驶时被驱动而使车辆行驶。自电源装置100向电动机93供给电力而驱动电动机93。发电机94由发动机96驱动,或者由对车辆施加制动时的再生制动驱动,从而对电源装置100的电池进行充电。此外,如图12所示,车辆HV也可以具有用于对电源装置100进行充电的充电插头98。能够通过将该充电插头98与外部电源连接从而对电源装置100进行充电。
(电动汽车用电源装置)
另外,图13示出了在仅利用电动机行驶的电动汽车搭载电源装置100的例子。该图所示的搭载有电源装置100的车辆EV具有车辆主体91、使该车辆主体91行驶的行驶用的电动机93、由该电动机93驱动的车轮97、向该电动机93供给电力的电源装置100、以及对该电源装置100的电池进行充电的发电机94。电源装置100借助DC/AC逆变器95连接于电动机93和发电机94。自电源装置100向电动机93供给电力而驱动电动机93。发电机94由对车辆EV进行再生制动时的能量驱动,对电源装置100的电池进行充电。另外,车辆EV具有充电插头98,能够将该充电插头98与外部电源连接而对电源装置100进行充电。
(蓄电装置用的电源装置)
再者,本发明不将电源装置的用途限定为使车辆行驶的电动机的电源。实施方式的电源装置也能够用作利用由太阳能发电、风力发电等产生的电力对电池进行充电并蓄电的蓄电装置的电源。图14示出了利用太阳能电池82对电源装置100的电池进行充电并蓄电的蓄电装置。
图14所示的蓄电装置利用由配置于住宅、工厂等建筑物81的屋顶、屋顶平台等的太阳能电池82产生的电力对电源装置100的电池进行充电。在该蓄电装置中,在将太阳能电池82作为充电用电源并利用充电电路83对电源装置100的电池进行了充电之后,借助DC/AC逆变器85向负载86供给电力。因此,该蓄电装置具有充电模式和放电模式。在图中所示的蓄电装置中,将DC/AC逆变器85和充电电路83分别借助放电开关87和充电开关84而与电源装置100连接。放电开关87和充电开关84的接通/断开由蓄电装置的电源控制器88进行切换。在充电模式中,电源控制器88将充电开关84切换为接通,将放电开关87切换为断开,允许自充电电路83向电源装置100进行充电。另外,当充电完成而成为满电状态时,或者在已充电预定值以上的容量的状态下,电源控制器88使充电开关84断开并使放电开关87接通从而切换到放电模式,允许自电源装置100向负载86进行放电。另外,也能够根据需要,将充电开关84设为接通并将放电开关87设为接通,同时进行向负载86的电力供给和向电源装置100的充电。
再者,虽未图示,但电源装置也能够用作利用夜间的深夜电力对电池进行充电并蓄电的蓄电装置的电源。由深夜电力充电的电源装置能够利用发电站的剩余电力即深夜电力进行充电,并在电力负载较大的昼间输出电力,将昼间的峰值电力限制为较小。再者,电源装置也能够用作利用太阳能电池的输出和深夜电力这两者进行充电的电源。该电源装置能够有效地利用由太阳能电池产生的电力和深夜电力这两者,能够在考虑天气、消耗电力的同时高效地蓄电。
以上那样的蓄电系统能够恰当地用于能够搭载于计算机服务器的机架的备用电源装置、手机等无线基站用的备用电源装置、家庭内用或工厂用的蓄电用电源、路灯的电源等、与太阳能电池组合而成的蓄电装置、信号设备、道路用的交通显示器等的备用电源等用途。
产业上的可利用性
本发明的电源装置和具有该电源装置的车辆能够恰当地用作对混合动力车、燃料电池汽车、电动汽车、电动摩托车等电动车辆进行驱动的电动机的电源等所使用的大电流用的电源。例如,可以举出能够切换EV行驶模式和HEV行驶模式的插电式混合动力电动汽车、混合动力式电动汽车、电动汽车等的电源装置。另外,也能够恰当地用于能够搭载于计算机服务器的机架的备用电源装置、手机等无线基站用的备用电源装置、家庭内用、工厂用的蓄电用电源、路灯的电源等、与太阳能电池组合而成的蓄电装置、信号设备等的备用电源等用途。
附图标记说明
100、电源装置;1、电池单体;1a、外装罐;1b、封口板;2、电池层叠体;3、端板;4、紧固构件;10、端子面;11、电极端子;12、端面间隔件;13、气体排出阀;14、汇流条;19、紧固件;30、隔板;31、安装板部;32、上周壁;33、纵周壁;34、隔板侧卡定片;34a、隔板侧伸出部;34b、隔板侧突起部;34ba、隔板侧倾斜面;34bb、隔板侧抵接面;36、第一贯通孔;40、主体部;41、紧固构件侧固定部;42、贯通孔;44、弯折部;50、保持部;51、卡定孔;60、60B、60C、60D、罩部;61、61C、罩主体部;62、62A、62B、62C、卡定爪部;62a、卡定爪伸出部;62b、卡定爪突起部;62ba、卡定爪倾斜面;62bb、卡定爪抵接面;63、63B、63C、63D、芯材;63Da、线材;64、显露部;64a、64b、显露片;65、螺纹件;81、建筑物;82、太阳能电池;83、充电电路;84、充电开关;85、DC/AC逆变器;86、负载;87、放电开关;88、电源控制器;91、车辆主体;93、电动机;94、发电机;95、DC/AC逆变器;96、发动机;97、车轮;98、充电插头;900、电源装置;901、电池单体;902、间隔件;903、端板;904、束紧条;905、顶罩;906、螺纹件;HV、车辆;EV、车辆;T、电池单体的厚度;W、电池单体的宽度;CT、罩主体部的厚度。
Claims (12)
1.一种电源装置,其具有:电池集合体,其具有多个电池单体并且沿着一个方向延伸;以及绝缘性的罩部,其将所述电池集合体的沿着一个方向延伸的一个面覆盖,其中,
所述罩部沿着延伸方向形成有多个用于将所述罩部固定于所述电池集合体的上表面侧的固定件,
所述罩部包括金属制的芯材。
2.根据权利要求1所述的电源装置,其中,
所述多个电池单体各自的外装罐设为方形,
所述电池集合体是层叠多个电池单体而成的层叠体,
所述电源装置还具有:
一对端板,其将层叠所述多个电池单体而成的所述电池层叠体的两侧端面覆盖;以及
隔板,其在所述多个电池单体层叠的状态下被夹在该电池单体彼此之间,
所述隔板在对所述罩部进行了固定的状态下的与所述固定件对应的位置具有接纳该固定件的接纳部。
3.根据权利要求1所述的电源装置,其中,
所述电源装置还具有保持部,
该保持部设于所述电池单体的层叠体的上表面与所述罩部之间,
所述保持部在对所述罩部进行了固定的状态下的与所述固定件对应的位置形成有接纳该固定件的接纳部。
4.根据权利要求1~3中任一项所述的电源装置,其中,
所述多个电池单体分别具有根据内部的压力变化而开阀的安全阀,
所述电池集合体的上表面设为所述多个电池单体的设有所述安全阀的面。
5.根据权利要求1~4中任一项所述的电源装置,其中,
所述罩部为树脂制,
所述芯材形成为板状。
6.根据权利要求5所述的电源装置,其中,
所述板状的芯材的至少局部自所述罩部显露。
7.根据权利要求5或6所述的电源装置,其中,
所述板状的芯材在其两端部具有显露部,该显露部自所述罩部显露并且分别伸展至所述一对端板的上表面而进行固定。
8.根据权利要求1~4中任一项所述的电源装置,其中,
所述罩部为树脂制,
所述芯材形成为分离开地埋设于所述树脂的多个棒状。
9.根据权利要求1~8中任一项所述的电源装置,其中,
所述罩部通过嵌入成型所述芯材而成。
10.根据权利要求1~9中任一项所述的电源装置,其中,
所述罩部形成为矩形形状,该矩形形状的长宽比为5以上。
11.一种车辆,其具有权利要求1~10中任一项所述的电源装置,其中,
所述车辆具有所述电源装置、自该电源装置被供给电力的行驶用的电动机、搭载所述电源装置和所述电动机的车辆主体、以及由所述电动机驱动而使所述车辆主体行驶的车轮。
12.一种蓄电装置,其具有权利要求1~10中任一项所述的电源装置,其中,
所述蓄电装置具有所述电源装置、以及对向该电源装置的充放电进行控制的电源控制器,利用所述电源控制器能够利用来自外部的电力向所述电池单体充电,并且利用该电源控制器进行控制从而对该电池单体进行充电。
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