CN109565093B - 蓄电模块 - Google Patents
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Abstract
蓄电模块(10)具备:多个蓄电元件(11);多个冷却部件(20),具有冷却介质(21)和以密闭状态封入冷却介质(21)的封入体(25),重叠于蓄电元件(11),并且能够在延伸到不与蓄电元件(11)重叠的区域的延伸部(20A)形成通过冷却介质(21)的蒸发使封入体(25)变形而成的鼓出部(28);及散热部件(40),接受多个冷却部件(20)的热量并向外部进行散热,散热部件(40)具有间隔部(41),该间隔部(41)配置于多个冷却部件(20)的相邻的延伸部(20A)之间并能够与鼓出部(28)抵接。
Description
技术领域
本说明书公开了对蓄电元件进行散热的技术。
背景技术
以往,公知有对蓄电元件进行散热的技术。专利文献1中,电池模块收容于组壳体中,多个单电池的正极端子与负极端子由汇流条进行电连接。填充于组壳体的下部的冷却介质蒸发,并在组壳体的上部凝结,由此向外部对电池的热量进行散热。
现有技术文献
专利文献
专利文献1:日本特开2010-211963号公报
发明内容
发明要解决的技术问题
另外,在专利文献1中,由于需要在组壳体内进行冷却介质的蒸发、凝结,所以需要对组壳体的整体进行密闭,因而存在不易于对蓄电模块的结构进行简化的问题。
本说明书所公开的技术是基于上述的情况而完成的,其目的在于简化蓄电模块的结构。
用于解决技术问题的技术手段
本说明书记载的蓄电模块具备:多个蓄电元件;多个冷却部件,具有冷却介质和以密闭状态封入所述冷却介质的封入体,重叠于所述蓄电元件,并且能够在延伸到不与所述蓄电元件重叠的区域的延伸部形成通过所述冷却介质的蒸发而使所述封入体变形而成的鼓出部;散热部件,接受所述多个冷却部件的热量而向外部进行散热,所述散热部件具有间隔部,所述间隔部配置于所述多个冷却部件的相邻的所述延伸部之间并能够与所述鼓出部抵接。
根据上述的结构,蓄电元件的热量能够经由将冷却介质密闭于封入体内的冷却部件、散热部件进行散热,例如与在收容有蓄电元件的壳体内填充冷却介质的结构相比,不必一定对壳体进行密闭,因此能够简化蓄电模块的结构。在此,若将冷却部件的封入体鼓出变形而成的鼓出部配置于导热性低的空间内(空气中),则存在鼓出部的散热性不良的问题。
根据本结构,通过将散热部件的间隔部配置于多个冷却部件的相邻的延伸部之间并与鼓出部抵接,蓄电元件的热量从冷却部件传导至散热部件,因此能够从散热部件向外部进行散热,能够提高散热性。
作为本说明书记载的技术的实施方式,优选以下的方式。
所述散热部件排列设有多个所述间隔部,在相邻的所述间隔部之间配置所述鼓出部。
这样,由于鼓出部易于紧贴于间隔部,所以能够提高冷却部件与散热部件之间的导热性。
作为冷却材料的流体在所述散热部件的内部进行循环。
这样,能够提高散热部件的散热性。
具备隔着所述冷却部件而重叠于所述蓄电元件的均热板,所述均热板在与所述冷却部件重叠而不与所述蓄电元件重叠的区域具备延伸设置到所述散热部件侧的均热延伸设置部。
这样,通过均热板的均热延伸设置部,能够提高从蓄电元件向散热部件的导热性。
发明效果
根据本说明书记载的技术,能够简化蓄电模块的结构。
附图说明
图1是表示实施方式1的蓄电模块的立体图。
图2是表示蓄电模块的俯视图。
图3是表示蓄电模块的主视图。
图4是图2的A-A向剖视图。
图5是将图4的一部分放大了的剖视图。
图6是相对于图5而言封入体没有鼓出变形的状态的剖视图。
图7是表示散热部件的俯视图。
图8是表示散热部件的左视图。
图9是表示图7的B-B向剖视图。
具体实施方式
<实施方式1>
参照图1至图9对实施方式1进行说明。本实施方式的蓄电模块10例如搭载于电动汽车、混合动力汽车等车辆上而向电动机等负载供给电力。蓄电模块10可以以任意的方向来进行配置,在以下的说明中,以X方向为左方、以Y方向为前方、以Z方向为上方来进行说明。
(蓄电模块10)
如图4所示,蓄电模块10具备:多个(在本实施方式中为六个)蓄电元件11、重叠于各蓄电元件11而对蓄电元件11进行冷却的多个冷却部件20(在本实施方式中为六个)、重叠于各冷却部件20与各蓄电元件11之间而接受蓄电元件11的热量的多个(在本实施方式中为六个)均热板30及接受冷却部件20的热量而向外部进行散热的散热部件40。
(蓄电元件11)
蓄电元件11是在一对电池用叠片之间隔着未图示的蓄电要素而将电池用叠片的侧缘利用热熔敷等公知方法以液密状态进行接合所成的。如图1所示,从蓄电元件11的前端缘,呈金属箔状的正极的电极端子12A和负极的电极端子12B以与电池用叠片的内表面维持液密状态的方式从电池用叠片的内侧向外侧突出。各蓄电元件11的电极端子12A与电极端子12B隔开间隔地配置,与内部的蓄电要素进行电连接。
多个蓄电元件11沿着上下方向排列配置,相邻的蓄电元件11以在一个电极端子12A的邻近设置另一个电极端子12B的方式进行配置。相邻的电极端子12A与电极端子12B经由U字状的多个(在本实施方式中为五个)连接部件13进行电连接。各电极端子12A、12B与连接部件13例如利用激光焊接、超音波用焊接、钎焊等公知方法进行连接。相邻的电极端子12A、12B之间由各连接部件13进行连接,由此将多个蓄电元件11串联连接。
在本实施方式中,作为蓄电元件11,例如可以使用锂离子二次电池、镍氢二次电池等二次电池,也可以使用双电层电容器、锂离子电容器等电容器,可以根据需要适当选择任意种类。
(冷却部件20)
如图6所示,冷却部件20具备:状态在液体与气体之间变化的冷却介质21、吸收冷却介质21的吸收部件22、以密闭状态封入冷却介质21及吸收部件22的封入体25。冷却介质21例如可以使用从由全氟碳、氢氟醚、氢氟酮、含氟惰性液体、水、甲醇、乙醇等醇剂构成的组中选择的一种或多种。冷却介质21可以具有绝缘性,也可以具有导电性。封入到封入体25内的冷却介质21的量可以根据需要适当选择。
吸收部件22呈大致长方形的片状。吸收部件22由能够吸收冷却介质21的材料形成。该吸收部件22可以是将能够吸收冷却介质21的材料加工成纤维状并以此做成织物的部件,也可以是做成无纺布的部件。作为无纺布的形态,可以是纤维片、网状物(仅由纤维构成的薄膜状的片)、或棉絮(毛毯状纤维)。作为构成吸收部件22的材料,可以是天然纤维,也可以是由合成树脂构成的合成纤维,还可以同时使用天然纤维和合成纤维双方。
由于吸收部件22配置于比与蓄电元件11重叠的区域大的区域,因此封入体25内的吸收部件22具备从与蓄电元件11重叠的区域延伸设置到不与蓄电元件11重叠的区域的吸收延伸设置部23。
封入体25例如可以将大致呈长方形状的两个片部件利用粘接、熔敷、焊接等公知方法以液密状态进行接合来形成。各片部件是在金属片的两面上层叠合成树脂制薄膜而成的。作为构成金属片的金属,可以根据需要适当选择铝、铝合金、铜、铜合金等任意的金属。作为构成合成树脂制薄膜的合成树脂,可以根据需要适当选择聚乙烯、聚丙烯等聚烯烃、聚丁烯对酞酸盐、聚对苯二甲酸乙二醇酯等聚酯、尼龙6、尼龙6,6等聚酰胺等任意的合成树脂。本实施方式涉及的封入体25是将两个片部件中的层叠有合成树脂制薄膜的面彼此叠合并进行热熔接而成的。
封入体25具有覆盖吸收部件22的上侧的第一片部26A及覆盖吸收部件22的下侧的第二片部26B。第一片部26A的上表面与蓄电元件11的下表面接触,第二片部26B的下表面与均热板30的上表面接触。在此,冷却部件20具有延伸设置到不与蓄电元件11重叠的区域的延伸部20A,如图5所示,该延伸部20A中的第一片部26A被设为能够通过封入体25内的冷却介质21的蒸发而鼓出变形的鼓出部28。鼓出部28是在冷却部件20中的延伸部20A通过冷却介质21的蒸发而使封入体25变形所形成的。
鼓出部28是通过冷却介质21的蒸发使封入体25的内圧上升、从而使封入体25膨胀地变形而形成的。另外,对于封入体25中的除鼓出部28以外的部分,虽然通过封入体25内的冷却介质21的蒸发而使内圧上升,但由于被蓄电元件11与均热板30夹持而限制了膨胀,所以封入体25并不会鼓出变形。
(均热板30)
均热板30为长方形的平板状,隔着冷却部件20而重叠于蓄电元件11,使用铝或铝合金、铜、铜合金等导热性高的部件。该均热板30具有:与蓄电元件11及第二片部26B接触而接受蓄电元件11的热量的接触部31和在接触部31的右方延伸到不与蓄电元件11重叠的区域的均热延伸设置部32。在本实施方式中,虽然在均热延伸设置部32的右端部与右方的散热部件40的后述间隔部41之间形成有间隙,但不限于此,也可以使均热延伸设置部32的端部与散热部件40的间隔部41之间接触。
(散热部件40)
散热部件40由铝或铝合金、铜、铜合金等导热性高的金属构成,未图示的冷却材料的导入口及导出口开口。散热部件40在前后方向上形成得比冷却部件20的长度长,如图8、图9所示,具备排成一列地设置的多个(在本实施方式中为六个)间隔部41、连结多个间隔部41并收容冷却材料的主体42。间隔部41以板状突出,具备相互平行的侧面部41A、41B、使一对侧面部41A、41B之间相连的前端面部41C,在内部形成有供冷却材料流动的空间。主体42具有长方体状的外表面,具备连结侧面部41A、41B之间的连结部42A。如图5、图6所示,该散热部件40以在多个冷却部件20的相邻的多个延伸部20A之间配置各间隔部41的方式安装于蓄电元件11的右方。间隔部41的一个侧面部41A与延伸部20A的第二片部26B抵接。而且,当通过冷却部件20内的冷却介质21的蒸发使第一片部26A鼓出变形而形成鼓出部28时,该鼓出部28变形为紧贴于侧面部41B及连结部42A的形状。作为冷却材料,将冷却液从散热部件的导入口导入,冷却液进行循环之后从导出口导出,由此,将传导至冷却液的热量向外部进行散热。作为散热部件40,例如可以使内部流通冷却液的导管(未图示)多次折返而在整个内部进行延伸。而且,在本实施方式中,使用水(流体)作为冷却液,但不限于此,也可以使用油等液体。而且,作为冷却液也可以使用防冻液。此外,不限于液体,也可以使用气体作为冷却材料。
根据本实施方式,可以达到以下的作用、效果。
蓄电模块10具备:多个蓄电元件11;多个冷却部件20,具有冷却介质21及以密闭状态封入冷却介质21的封入体25,重叠于蓄电元件11,并且能够在延伸到不与蓄电元件11重叠的区域的延伸部20A形成通过冷却介质21的蒸发而使封入体25变形而成的鼓出部28;及散热部件40,接受多个冷却部件20的热量而向外部进行散热,散热部件40具有间隔部41,该间隔部41配置于多个冷却部件20的相邻的延伸部20A之间并能够与鼓出部28抵接。
根据本实施方式,蓄电元件11的热量能够经由将冷却介质21密闭于封入体25的冷却部件20、散热部件40进行散热,例如与在收容有蓄电元件11的壳体内填充冷却介质21的结构相比,不必一定对壳体进行密闭,因此能够简化蓄电模块10的结构。在此,若将冷却部件20的封入体25鼓出变形而成的鼓出部28配置于导热性低的空间内(空气中),则存在鼓出部28的散热性不良的问题。根据本实施方式,散热部件40的间隔部41配置于多个冷却部件20的相邻的延伸部20A之间而与鼓出部28抵接,由此,蓄电元件11的热量从冷却部件20传导至散热部件40,因此,能够从散热部件40向外部进行散热,能够提高散热性。
散热部件40排列设有多个间隔部41,在相邻的间隔部41之间配置鼓出部28。
这样,由于鼓出部28易于紧贴于间隔部41,所以能够提高冷却部件20与散热部件40之间的导热性。
而且,作为冷却材料的水(流体)在散热部件40的内部进行循环。
这样,能够提高散热部件40的散热性。
而且,具备隔着冷却部件20而重叠于蓄电元件11的均热板30,均热板30在与冷却部件20重叠而不与蓄电元件11重叠的区域具备延伸设置到散热部件40侧的均热延伸设置部32。
这样,由于能够将热量从均热板30的均热延伸设置部32传导至冷却部件20,所以能够提高从蓄电元件11向散热部件40的导热性。
<其他实施方式>
本说明书记载的技术并不限于通过所述记述及附图所说明的实施方式,例如以下的实施方式也包含于本说明书记载的技术的技术范围内。
(1)虽然设为鼓出部28几乎在整体上与侧面部41B及主体42的连结部42A接触(紧贴)的结构,但不限于此。也可以形成使鼓出部28的至少一部分与侧面部41A及连结部42A中的至少一方抵接的结构。
(2)虽然设为鼓出部28形成于第一片部26A上的结构,但也可以形成于第一片部26A和第二片部26B双方上,在这种情况下,可以使各鼓出部28与间隔部41的两侧面部41A、41B抵接。
(3)蓄电元件11、冷却部件20、均热板30的数量不限于上述实施方式的数量,可以适当变更。此外,散热部件40的间隔部41的数量也可以根据冷却部件20的数量而适当变更。
(4)例如蓄电模块10可以被未图示的金属制、合成树脂制的壳体覆盖。而且,例如,可以将散热部件40设为壳体的一部分,或设置将包含散热部件40在内的蓄电模块10整体覆盖的壳体。在这种情况下,例如可以设为由壳体从上下进行夹持来保持蓄电模块10的结构。
附图标记说明
10:蓄电模块
11:蓄电元件
20:冷却部件
20A:延伸部
21:冷却介质
22:吸收部件
25:封入体
28:鼓出部
30:均热板
40:散热部件
41:间隔部
Claims (5)
1.一种蓄电模块,具备:
多个蓄电元件;
多个冷却部件,具有冷却介质和以密闭状态封入所述冷却介质的封入体,重叠于所述蓄电元件,并且能够在延伸到不与所述蓄电元件重叠的区域的延伸部形成通过所述冷却介质的蒸发使所述封入体变形而成的鼓出部;及
散热部件,接受所述多个冷却部件的热量而向外部进行散热,
所述散热部件具有间隔部,所述间隔部配置于所述多个冷却部件的相邻的所述延伸部之间并能够与所述鼓出部抵接。
2.根据权利要求1所述的蓄电模块,其中,
所述散热部件排列设有多个所述间隔部,
在相邻的所述间隔部之间配置所述鼓出部。
3.根据权利要求1所述的蓄电模块,其中,
作为冷却材料的流体在所述散热部件的内部进行循环。
4.根据权利要求2所述的蓄电模块,其中,
作为冷却材料的流体在所述散热部件的内部进行循环。
5.根据权利要求1~4中任一项所述的蓄电模块,其中,
所述蓄电模块具备隔着所述冷却部件而重叠于所述蓄电元件的均热板,
所述均热板在与所述冷却部件重叠而不与所述蓄电元件重叠的区域具备延伸设置到所述散热部件侧的均热延伸设置部。
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