CN209747613U - 电池模组 - Google Patents

电池模组 Download PDF

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CN209747613U
CN209747613U CN201921005581.2U CN201921005581U CN209747613U CN 209747613 U CN209747613 U CN 209747613U CN 201921005581 U CN201921005581 U CN 201921005581U CN 209747613 U CN209747613 U CN 209747613U
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plate
battery module
heat
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module according
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章华
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Jiangsu Times Amperex Technology Ltd
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Priority to CN201921005581.2U priority Critical patent/CN209747613U/zh
Priority to US16/498,118 priority patent/US11121420B2/en
Priority to PCT/CN2019/095040 priority patent/WO2020258370A1/zh
Priority to EP19769702.2A priority patent/EP3787060B1/en
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Priority to US17/389,336 priority patent/US11502348B2/en
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    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/20Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
    • H01M50/204Racks, modules or packs for multiple batteries or multiple cells
    • H01M50/207Racks, modules or packs for multiple batteries or multiple cells characterised by their shape
    • H01M50/209Racks, modules or packs for multiple batteries or multiple cells characterised by their shape adapted for prismatic or rectangular cells
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00Secondary cells; Manufacture thereof
    • H01M10/60Heating or cooling; Temperature control
    • H01M10/61Types of temperature control
    • H01M10/613Cooling or keeping cold
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    • H01M10/62Heating or cooling; Temperature control specially adapted for specific applications
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    • H01MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00Secondary cells; Manufacture thereof
    • H01M10/60Heating or cooling; Temperature control
    • H01M10/64Heating or cooling; Temperature control characterised by the shape of the cells
    • H01M10/647Prismatic or flat cells, e.g. pouch cells
    • HELECTRICITY
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    • H01MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
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    • H01M10/60Heating or cooling; Temperature control
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    • H01MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00Secondary cells; Manufacture thereof
    • H01M10/60Heating or cooling; Temperature control
    • H01M10/65Means for temperature control structurally associated with the cells
    • H01M10/655Solid structures for heat exchange or heat conduction
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00Secondary cells; Manufacture thereof
    • H01M10/60Heating or cooling; Temperature control
    • H01M10/65Means for temperature control structurally associated with the cells
    • H01M10/655Solid structures for heat exchange or heat conduction
    • H01M10/6554Rods or plates
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    • H01MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
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    • H01M50/20Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
    • H01M50/204Racks, modules or packs for multiple batteries or multiple cells
    • H01M50/207Racks, modules or packs for multiple batteries or multiple cells characterised by their shape
    • H01M50/211Racks, modules or packs for multiple batteries or multiple cells characterised by their shape adapted for pouch cells
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/20Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
    • H01M50/218Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by the material
    • H01M50/22Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by the material of the casings or racks
    • H01M50/222Inorganic material
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    • H01ELECTRIC ELEMENTS
    • H01MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/20Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
    • H01M50/218Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by the material
    • H01M50/22Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by the material of the casings or racks
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    • H01M50/224Metals
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    • H01M50/00Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/20Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
    • H01M50/218Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by the material
    • H01M50/22Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by the material of the casings or racks
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    • H01M50/00Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/20Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
    • H01M50/258Modular batteries; Casings provided with means for assembling
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    • H01M50/00Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/20Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
    • H01M50/271Lids or covers for the racks or secondary casings
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    • H01M50/278Organic material
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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Abstract

本申请涉及储能器件领域,尤其涉及一种电池模组,包括下壳体、容置于所述下壳体的依次堆叠的多个电池单体以及导热板;所述下壳体形成有卡槽;所述导热板形成有插接部,所述插接部与所述卡槽插接配合。本申请提供的电池模组通过在下壳体形成卡槽,在导热板形成插接部,利用插接部与卡槽的插接配合实现导热板与下壳体的固定,能够形成稳定的连接结构,从而保证了下壳体的结构稳定性。

Description

电池模组
技术领域
本申请涉及储能器件领域,尤其涉及一种电池模组。
背景技术
新能源汽车的储能系统通常是由电池模组实现的,现有的电池模组包括金属下壳体,在与上盖等其他部件焊接时会产生飞溅,由此导致了其他部件的功能失效。另外,金属下壳体的重量大,而且需要绝缘的部位较多,一旦有些部位绝缘功能失效,会导致电池模组的质量问题。
为了给电池模组散热,通常设置有导热板,下壳体在与导热板焊接时,同样存在上述的飞溅问题,而且如何能够实现下壳体与导热板之间稳定的连接是目前亟待解决的技术问题。
实用新型内容
本申请提供了一种电池模组,以解决现有技术中的问题,实现下壳体与导热板的稳定连接。
本申请提供了一种电池模组,其中,包括下壳体、容置于所述下壳体的依次堆叠的多个电池单体以及导热板;
所述下壳体形成有卡槽;
所述导热板形成有插接部,所述插接部与所述卡槽插接配合。
优选地,所述下壳体的材质为绝缘材料。
优选地,所述导热板的材质为金属。
优选地,在所述插接部形成有容纳孔;
所述下壳体在所述容纳孔内形成热铆连接部。
优选地,所述下壳体包括一对侧板和一对弯折板;
每个所述侧板包括呈L形连接的第一板和第二板;所述第一板沿电池模组的高度方向延伸,所述第二板沿电池模组的宽度方向延伸;
每个所述弯折板包括呈L形连接的第三板和第四板;所述第三板沿电池模组的高度方向延伸,且所述第三板与所述第一板相连,所述第四板沿电池模组的宽度方向延伸;
所述第二板、第三板和第四板围成所述卡槽。
优选地,所述侧板和所述弯折板为一体注塑成型。
优选地,所述容纳孔的数量是多个,多个所述容纳孔分别沿着所述电池模组的长度方向排布在所述导热板的边缘部分。
优选地,所述下壳体还包括一对端板,设置在电池模组沿长度方向的两端,且所述一对端板分别与所述一对侧板固定连接。
优选地,所述下壳体内设置有固定于所述下壳体底部的导热结构胶。
优选地,所述电池模组还包括上盖,所述上盖与所述下壳体共同形成容置所述多个电池单体的容纳腔。
本申请提供的技术方案可以达到以下有益效果:
本申请提供的电池模组,包括下壳体、容置于下壳体的依次堆叠的多个电池单体以及导热板。下壳体形成有卡槽,导热板形成有插接部,插接部与卡槽插接配合。通过导热板与卡槽的插接,使导热板与下壳体之间能够形成稳定的连接结构,从而保证了电池模组的结构稳定性。
应当理解的是,以上的一般描述和后文的细节描述仅是示例性的,并不能限制本申请。
附图说明
为了更清楚地说明本申请具体实施方式或现有技术中的技术方案,下面将对具体实施方式或现有技术描述中所需要使用的附图作简单地介绍,显而易见地,下面描述中的附图是本申请的一些实施方式,对于本领域普通技术人员来讲,在不付出创造性劳动的前提下,还可以根据这些附图获得其他的附图。
图1为本申请实施例所提供的电池模组的分解示意图;
图2为本申请实施例所提供的电池模组的俯视图;
图3为图2中的A-A向剖视图;
图4为图3中的B处放大图;
图5为热铆后下壳体与导热板之间的配合状态剖视图;
图6为本申请实施例所提供的电池模组中下壳体与导热板相配合的结构分解示意图;
图7为图6中的C处放大图;
图8为图6中的D处放大图。
附图标记:
1-电池模组;
11-下壳体;
111-侧板;
111a-第一板;
111b-第二板;
112-弯折板;
112a-第三板;
112b-第四板;
112c-热铆连接部;
113-端板;
114-卡槽;
12-电池单体;
13-上盖;
14-结构胶;
15-导热板;
151-插接部;
152-容纳孔。
此处的附图被并入说明书中并构成本说明书的一部分,示出了符合本申请的实施例,并与说明书一起用于解释本申请的原理。
具体实施方式
下面将结合附图对本申请的技术方案进行清楚、完整地描述,显然,所描述的实施例是本申请一部分实施例,而不是全部的实施例。基于本申请中的实施例,本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其他实施例,都属于本申请保护的范围。
图1为本申请实施例所提供的电池模组的分解示意图,如图1所示,本申请实施例提供了一种电池模组1,包括下壳体11和容置于下壳体11的依次堆叠的多个电池单体12。电池模组1还包括上盖13,上盖13与下壳体11共同形成容纳该多个电池单体12的容纳腔。
电池单体12内设置有电极组件和电解液,电极组件与电解液发生电化学反应,从而输出电能。反应过程中产生的热量需要及时的散发,因此电池模组1还包括导热板15来进行散热。
具体而言,电池模组1可以包括一对侧板111和一对端板113,侧板111和端板113对电池单体12进行固定,以对电池单体12的膨胀进行限制。导热板15可以连接在侧板111和端板113远离上盖13的一端,即侧板111和端板113的底端。当多个电池单体12容置于下壳体11内时,能够通过导热板15进行散热。
图2为本申请实施例所提供的电池模组的俯视图,图3为图2中的A-A向剖视图,图4为图3中的B处放大图。
如图2至图4,下壳体11形成有卡槽114,导热板15形成有插接部151,该插接部151可以形成在导热板15的边缘部分,插接部151与卡槽114插接配合。可以通过设置插接部151和卡槽114之间的配合公差,使得插接部151和卡槽114之间的插接更紧密,从而实现导热板15与下壳体11之间稳定的连接,保证了电池模组1的结构强度。
下壳体11与导热板15采用上述的分体式结构,再利用插接部151和卡槽114插接固定的方式,这样就可以采用绝缘材料的下壳体11解决金属下壳体在焊接过程中的飞溅问题,而且能够实现电池模组1的减重,进一步还可以采用金属材质的导热板15对电池单体12进行散热。另外,采用绝缘材料的下壳体11还能解决现有技术中金属下壳体绝缘部位多、容易绝缘失效的问题。
优选地,在插接部151形成有容纳孔152,插接部151插接在卡槽114中,下壳体11在容纳孔152内形成热铆连接部112c,参照图5。
图5为热铆后下壳体与导热板之间的配合状态剖视图,首先参照图4,将插接部151插入到卡槽114内,并使容纳孔152完全进入到卡槽114中,再对下壳体11的底部进行热铆,形成图5所示的结构。图5所示的实施例中,下壳体11包括弯折板112,对弯折板112的第四板112d的底部进行热铆形成热热铆连接部112c,下文会具体描述。
下壳体11的材料的一部分在热铆工艺下熔融,熔融的部分会流入到容纳孔152内,冷却后形成如图4中所示的热铆连接部112c,将导热板15卡住。通过在容纳孔152形成热铆连接部112c,将导热板15与下壳体11固定,能够形成稳定的连接结构,避免了导热板15从卡槽114脱出,进一步保证了下壳体11的结构稳定性。
上文已提及,优选地,上述下壳体11的材质是具有绝缘性能的高分子材料,通过注塑、挤出和模压等成型方式形成。这样,不会产生现有技术中金属下壳体在焊接时产生飞溅,导致其他部件失效的问题,提高了电池模组的质量。
电池单体12的外形可以是为方形或圆柱形,在此不作限定。
上盖13的材质也可以是是具有绝缘性能的高分子材料,通过注塑、挤出和模压等成型方式形成。
优选地,导热板15的材质为金属,其导热率高于下壳体11和上盖13的导热率。具体可以铜、铝等金属材质,在此不作进一步限定。
图6为本申请实施例所提供的电池模组中下壳体与导热板相配合的结构分解示意图,图7为图6中的C处放大图,图8为图6中的D处放大图。
如图6和图7所示,上述卡槽114形成在下壳体11沿电池模组1高度方向上的底部,即,远离上盖13的一端。这样设置后,当导热板15的插接部151插入到卡槽114后,导热板15与上盖13相对设置,导热板15的面积相对较大,能够最大面积地对电池单体12进行散热,起到更好的散热效果。
作为一种优选的实现方式,参照图4至图7,下壳体11包括一对侧板111和一对弯折板112,每个侧板111包括呈L形连接的第一板111a和第二板111b。第一板111a沿电池模组1的高度方向延伸(Z向),第二板111b沿电池模组1的宽度方向(X向)延伸。每个弯折板112包括呈L形连接的第三板112a和第四板112b,第三板112a沿电池模组1的高度方向(Z向)延伸,且第三板112a与第一板111a相连,第四板112b沿电池模组1的宽度方向(X向)延伸,第二板111b、第三板112a和第四板112b围成卡槽114。
其中,第一板111a、第二板111b、第三板112a和第四板112b可以为一体注塑成型,即,侧板111和弯折板112为一体注塑成型,从而形成上述卡槽114。
由于上述卡槽114是通过侧板111和弯折板112形成,因此上述结构中形成的卡槽114能够沿着电池模组1的长度方向(Y向)延伸,在与导热板15插接配合后,配合的相对面积较大,导热板15的连接可靠性较高。
如图8所示,进一步地,导热板15可以为矩形板,容纳孔152的数量是多个,多个容纳孔152分别沿着电池模组1的长度方向(Y向)排布在导热板15的边缘部分。这样在导热板15与下壳体11之间热铆后,仅有很小的一部分导热板15吸收了热量,不会导致导热板15整体全部受热后导致的受热变形。一旦导热板15发生变形,与外部的导热部件接触面积就会减小,影响导热效果。因此,该结构能够较好地保证导热板15的导热效果。而且,导热板15仅有很小的一部分吸收热量,不会导致导热板15发生如现有技术那样大的变形,平整度不会受到较大影响,电池单体12在安装后不会发生晃动,提高了电池模组1的稳定性。
优选地,下壳体11还包括一对端板113,设置在电池模组1沿长度方向的两端,且一对端板113分别与一对侧板111固定连接,从而限制电池单体12的膨胀。
上述卡槽114也可以形成在端板113上,将弯折板112与端板113形成该卡槽114,这样,卡槽114则沿着电池模组1的宽度方向(X向)延伸。对应于这种实施例,则容纳孔152可以沿着电池模组1的宽度方向(X向)的排布在导热板15的边缘部分。
优选地,下壳体11内设置有固定于下壳体11的结构胶14,结构胶14优选为导热结构胶。组装电池模组1时,先将下壳体11、电池单体12和上盖13组装,再进行涂胶,这样能够对涂胶操作实时监控,保证了涂胶效果。涂胶后,再将导热板15的插入部151插入到下壳体11的卡槽114中,实现导热板15与下壳体11的稳定连接。而且导热结构胶能够有助于热量的传递,进一步提高电池模组1的散热效果。
在将导热板15的插入部151插入到下壳体11的卡槽114之后,进行热铆,下壳体11上熔融的材料流入到导热板15的容纳孔152内,冷却后形成热铆连接部112c,进一步提高了导热板15与下壳体11之间的连接稳定性,保证了电池模组1的整体结构强度。
以上仅为本申请的优选实施例而已,并不用于限制本申请,对于本领域的技术人员来说,本申请可以有各种更改和变化。凡在本申请的精神和原则之内,所作的任何修改、等同替换、改进等,均应包含在本申请的保护范围之内。

Claims (10)

1.一种电池模组,其特征在于,包括下壳体、容置于所述下壳体的依次堆叠的多个电池单体以及导热板;
所述下壳体设置有卡槽;
所述导热板设置有插接部,所述插接部与所述卡槽插接配合。
2.根据权利要求1所述的电池模组,其特征在于,所述下壳体的材质为绝缘材料。
3.根据权利要求1所述的电池模组,其特征在于,所述导热板的材质为金属。
4.根据权利要求1所述的电池模组,其特征在于,在所述插接部形成有容纳孔;
所述下壳体在所述容纳孔内形成热铆连接部。
5.根据权利要求4所述的电池模组,其特征在于,所述下壳体包括一对侧板和一对弯折板;
每个所述侧板包括呈L形连接的第一板和第二板;所述第一板沿电池模组的高度方向延伸,所述第二板沿电池模组的宽度方向延伸;
每个所述弯折板包括呈L形连接的第三板和第四板;所述第三板沿电池模组的高度方向延伸,且所述第三板与所述第一板相连,所述第四板沿电池模组的宽度方向延伸;
所述第二板、第三板和第四板围成所述卡槽。
6.根据权利要求5所述的电池模组,其特征在于,所述侧板和所述弯折板为一体注塑成型。
7.根据权利要求4所述的电池模组,其特征在于,所述容纳孔的数量是多个,多个所述容纳孔分别沿着所述电池模组的长度方向排布在所述导热板的边缘部分。
8.根据权利要求4所述的电池模组,其特征在于,所述下壳体还包括一对端板,设置在电池模组沿长度方向的两端,且所述一对端板分别与所述一对侧板固定连接。
9.根据权利要求1所述的电池模组,其特征在于,所述下壳体内设置有固定于所述下壳体底部的导热结构胶。
10.根据权利要求1所述的电池模组,其特征在于,所述电池模组还包括上盖,所述上盖与所述下壳体共同形成容置所述多个电池单体的容纳腔。
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