WO2022041963A1 - 一种软包模组及含有其的电动汽车 - Google Patents

一种软包模组及含有其的电动汽车 Download PDF

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Publication number
WO2022041963A1
WO2022041963A1 PCT/CN2021/100861 CN2021100861W WO2022041963A1 WO 2022041963 A1 WO2022041963 A1 WO 2022041963A1 CN 2021100861 W CN2021100861 W CN 2021100861W WO 2022041963 A1 WO2022041963 A1 WO 2022041963A1
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WO
WIPO (PCT)
Prior art keywords
module
panel
soft
end plate
outer frame
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PCT/CN2021/100861
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English (en)
French (fr)
Inventor
鲁恒飞
李世敬
刘浩
徐兴无
Original Assignee
合肥国轩高科动力能源有限公司
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Application filed by 合肥国轩高科动力能源有限公司 filed Critical 合肥国轩高科动力能源有限公司
Priority to US17/795,501 priority Critical patent/US20230061286A1/en
Priority to EP21859807.6A priority patent/EP4106091A1/en
Publication of WO2022041963A1 publication Critical patent/WO2022041963A1/zh

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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/60—Heating or cooling; Temperature control
    • H01M10/65—Means for temperature control structurally associated with the cells
    • H01M10/655—Solid structures for heat exchange or heat conduction
    • H01M10/6554—Rods or plates
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/60—Heating or cooling; Temperature control
    • H01M10/65—Means for temperature control structurally associated with the cells
    • H01M10/658—Means for temperature control structurally associated with the cells by thermal insulation or shielding
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
    • H01M50/204—Racks, modules or packs for multiple batteries or multiple cells
    • H01M50/207—Racks, modules or packs for multiple batteries or multiple cells characterised by their shape
    • H01M50/211—Racks, modules or packs for multiple batteries or multiple cells characterised by their shape adapted for pouch cells
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
    • H01M50/249—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders specially adapted for aircraft or vehicles, e.g. cars or trains
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
    • H01M50/258—Modular batteries; Casings provided with means for assembling
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
    • H01M50/289—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by spacing elements or positioning means within frames, racks or packs
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/50—Current conducting connections for cells or batteries
    • H01M50/502—Interconnectors for connecting terminals of adjacent batteries; Interconnectors for connecting cells outside a battery casing
    • H01M50/509—Interconnectors for connecting terminals of adjacent batteries; Interconnectors for connecting cells outside a battery casing characterised by the type of connection, e.g. mixed connections
    • H01M50/51—Connection only in series
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/60—Heating or cooling; Temperature control
    • H01M10/62—Heating or cooling; Temperature control specially adapted for specific applications
    • H01M10/625—Vehicles
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M2220/00—Batteries for particular applications
    • H01M2220/20—Batteries in motive systems, e.g. vehicle, ship, plane
    • Y—GENERAL 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
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10—Energy storage using batteries

Definitions

  • the invention relates to a soft package module, in particular to a large soft package module in which two modules are superimposed in the longitudinal direction, belonging to the technical field of batteries.
  • soft-pack batteries Compared with hard-shell batteries, soft-pack batteries have the advantage of high battery energy density.
  • the power of soft-pack battery modules of the same size often does not have obvious advantages over hard-shell batteries. This is because the volume utilization rate of the cells of the existing soft-pack batteries is not high, and the volume utilization rate of the modules made of the cells is quite different from that of the hard shell battery modules.
  • a considerable part of the reason for the low volume utilization rate of soft-packaged cells into soft-packaged modules is that the utilization rate of the cells in the length direction is not high. That is, because the existing soft pack battery module has end plates at both ends, and the module is fixed by four fixing holes on the end plates, the size utilization rate in the length direction of the module is not high.
  • the purpose of the present invention is to provide a soft package module whose length of the module is twice that of the existing 390 module, and the volume utilization rate is relatively high.
  • the present invention provides a soft package module, the soft package module includes at least two module assemblies and a shell wrapping the module assemblies, the module assemblies are arranged along the length direction of the module assembly, and adjacent modules The middle of the assembly is used to fix the middle end plate of the module assembly.
  • the soft package module includes two module assemblies.
  • the module assembly can be connected in series through the intermediate end plate, and can also be electrically connected with other external modules respectively.
  • the soft package module includes a casing for wrapping the module assembly, and the intermediate end plate is fixedly connected to the casing through through holes, for example, pre-fixed and positioned by bolts, and then fixed by welding.
  • through holes for example, pre-fixed and positioned by bolts, and then fixed by welding.
  • two through holes are provided, and the two through holes correspond to the through holes of the outer frame.
  • the middle end plate is provided with a boss, and the boss is fixedly connected with the outer shell of the soft package module.
  • the boss is arranged between the two through holes in the middle.
  • the middle end plate is welded and fixed with the module shell through the boss.
  • insulating layers are provided on both sides of the middle end plate corresponding to the module assembly.
  • the insulating layer is preferably made of PC material, which is used to electrically insulate the internal module assembly.
  • the middle end plate can be a panel with a certain thickness made of aluminum alloy material.
  • each module is always a plurality of core assemblies connected in series, each core is always a plurality of parallel cores, and the cores are stacked cores or winding cores.
  • the shell of the soft package module includes a module outer frame, a module side plate and a module end plate;
  • the outer frame of the module includes a first panel, a second panel and a third panel opposite to the first panel.
  • the second panel is fixedly connected to the first panel and the third panel respectively, and the module side panels are respectively connected to the first panel and the third panel.
  • Fixed connection; the outer frame of the module and the side plate of the module are fixedly connected to form an inner space with openings at both ends, and the module assembly is placed in the inner space; the two end plates of the module are fixedly connected to the outer frame of the module and the side plate of the module , covering the openings at both ends; the inner surface of the module end plate is provided with a module cover plate, and the inner surface of the module cover plate is provided with a cover plate assembly.
  • the middle end plate is close to the side surface of the third panel, and two through holes corresponding to the through holes of the third panel are provided.
  • the through holes of the third panel and the through holes of the middle end plate are used to pass through the bolts, and the bolts are locked and fixed with the nuts embedded on the middle beam of the outer box to realize the integral fixing of the soft package module.
  • two through holes are provided at a position of the third panel of the outer frame of the module close to the middle end plate.
  • the two through holes in the third panel match the positions of the two through holes in the mid-end plate for passing the bolts.
  • a middle portion of the outer frame of the module is provided with a notch that transversely penetrates the first panel.
  • the lower end of the middle part of the side plate of the module is provided with a groove that matches the groove of the outer frame of the module. Slots and grooves fit together to secure the module to the middle beam of the outer box.
  • a portion of the second panel of the outer frame of the module close to the first panel is provided with protruding surfaces extending to both sides along the length direction of the second panel.
  • the length of the soft package module is twice the length of the 390 standard module, and the height and width are the same as those of the 390 standard module.
  • the inner surface of the module end plate is provided with a module cover plate, and the inner surface of the module cover plate is provided with a cover plate assembly.
  • the module cover plate is used for insulating the module assembly, and the module cover plate assembly is used for electrically connecting the module assembly.
  • the present invention also provides an electric vehicle, which includes the above-mentioned soft package module.
  • the length of the soft package module of the present invention is twice the length of the standard 390 module, and two module assemblies are superimposed in the length direction and share the middle end plate and the fixing hole, thereby improving the size utilization rate in the length direction.
  • the soft package module of the present invention can not only save the material and size of one end plate and two fixing holes, but also the middle end plate can be fixed on the middle beam of the outer box body by steps, so that the box body can be better utilized. Limited space; and when laying the module assembly flat, a whole liquid cooling plate can be set up in the side direction for thermal management interaction.
  • FIG. 1 is a schematic structural diagram of a soft pack battery module of the present invention.
  • FIG. 2 is a schematic diagram of an exploded structure of the soft pack battery module of the present invention.
  • FIG. 3 is a schematic structural diagram of the outer frame of the soft pack battery module of the present invention.
  • FIG. 4 is a schematic structural diagram of a side plate of a soft pack battery module of the present invention.
  • FIG. 5 is a schematic structural diagram of the middle end plate of the soft pack battery module of the present invention.
  • FIG. 6 is another schematic diagram of the exploded structure of the soft pack battery module of the present invention.
  • Module frame 1. Module frame; 2. Module end plate; 3. Module side plate; 4. Middle end plate; 5. Module assembly; 6. Cover plate assembly; 7. Cover plate; 1-1, No. 1-2, the first through hole; 1-3, the first protruding surface; 1-4, the second panel; 1-5, the third panel; 1-6, the first panel; 1-7, The first protrusion; 3-1, the groove; 3-2, the gap; 3-3, the welding rib; 3-4, the second protruding surface; 4-2, the insulating layer; 4-1-1, the second pass Hole; 4-1-2, boss.
  • this embodiment provides a soft package module whose length is twice the length of a 390 standard module, and the width and height dimensions are the same as those of a standard 390 module. Its specific length dimension is twice the length of the 390 standard module plus the dimension of the middle beam of the outer box.
  • the soft package module includes a module outer frame 1, a module end plate 2, a module side plate 3, an intermediate end plate 4, two module assemblies 5, and related electrical and insulating parts.
  • the module end plate 4 is provided with 4 through holes for passing through the bolts.
  • the module is fixed on the middle beam of the outer box through the 4 through holes of the module end plate and the 2 second through holes 4-1-1 of the middle end plate.
  • the side panels 3 of the group can be provided with matching steps so that the intermediate end panels 4 are fixed on the intermediate beams of the outer box.
  • two module assemblies 5 are respectively fixed on both ends of the middle end plate 4 along the length direction of the module assemblies.
  • the outer frame 1 of the module is fixedly connected with the side plate 3 of the module, and can form a rectangular parallelepiped structure with four sides, and the two ends of the rectangular parallelepiped structure are open.
  • the inner space formed by the fixed connection of the module outer frame 1 and the module side plate 3 wraps the outer periphery of the module assembly.
  • Two end faces of the module assembly (openings at both ends of the rectangle) are provided with a cover plate assembly 6 , the outer surface of the cover plate assembly 6 is provided with a cover plate 7 , and the outer surface of the cover plate 7 is provided with a module end plate 2 .
  • the module frame 1 of this embodiment includes a first panel 1-6, a second panel 1-4 and a third panel 1-5, and the second panel 1-4 is respectively connected with the first panel 1-4. 6 and the third panel 1-5 are vertically and fixedly connected.
  • the outer frame 1 of the module is a stamping and bending structure of an aluminum alloy plate. For lightweight, its thickness can be 1mm.
  • the middle bottom of the module outer frame 1 is provided with a first cut groove 1-1 transversely penetrating the first panel, so as to facilitate the module assembly 5 to be fixed on the middle beam of the outer box.
  • first through holes 1-2 through which the bolts can be inserted are symmetrically distributed in the middle of the third panel 1-5 of the outer frame 1 of the module on both sides.
  • the two bolts pass through the first through holes 1-2, penetrate the second through hole 4-1-1 of the middle end plate 4, and then lock and fix it in the embedded nut on the middle beam of the outer box.
  • the part of the second panel 1-4 of the module outer frame 1 close to the first panel 1-6 is provided with a first protruding surface 1-3, and the first protruding surface 1-3 is the lengthwise direction of the second panel 1-4 toward both ends. extended face.
  • the length of one length side of the second panel 1-4 is the same as that of the first panel 1-6, and the length of the other length side of the second panel 1-4 is the same as that of the third panel 1-5.
  • the first protruding surfaces 1-3 of the second panels 1-4 are respectively welded and fixed to one side of the module end plate 2; The bottom edge of plate 2 is welded.
  • a plurality of first protrusions 1-7 may be provided on the length of the third panel 1-5 connecting with the module side panel 3.
  • the middle part of the outer frame 1 of the module is provided with a first groove 1-1 transversely passing through the first panel 1-6, the upper area of the first groove 1-1 in the middle part of the second panel 1-4 and the middle end plate 4 is welded and fixed, and the middle area of the first through hole 1-2 of the third panel 1-5 of the module outer frame 1 is welded and fixed to the boss 4-1-2 on the upper surface of the middle end plate 4 .
  • a groove 3 - 1 corresponding to the first cut groove 1 - 1 of the module outer frame 1 is provided at a lower middle position of the module side plate 3 .
  • the first groove 1-1 and groove 3-1 ensure that the module is fixed on the middle beam of the outer box.
  • the upper area of the groove 3 - 1 of the module side plate 3 is welded and fixed to the other side surface of the middle end plate 4 .
  • the two longitudinal sides of the side plate 3 of the module are provided with integrally extruded welding ribs 3-3.
  • the portion of the module side plate 3 close to the first panel is provided with second protruding surfaces 3 - 4 extending to both ends along the length direction of the module side plate 3 .
  • the second protruding surface 3-4 is provided corresponding to the first protruding surface 1-3.
  • the second protruding surfaces 3-4 are respectively welded and fixed to the other side surfaces of the module end plates 2 at both ends.
  • a plurality of gaps 3-2 are evenly arranged on the welding ribs 3-3 of the side plate 3 of the module.
  • the position of the gap 3-2 is matched with the first protrusion 1-7, and the first protrusion 1-7 on the module outer frame 1 is inserted into the gap 3-5; thereby realizing the module side plate 3 and the module outer frame 1 Fixed lengthwise.
  • the module side plate 3 can be an aluminum alloy profile extrusion structure.
  • an insulating layer 4-2 is pasted on both surfaces of the middle end plate 4 close to the module assembly 5, and the insulating layer is preferably made of PC material to ensure electrical insulation from the internal cells.
  • Two through holes 4-1-1 are provided at both ends of the surface of the middle end plate 4 close to the surface of the third panel 1-5 for passing through the bolts.
  • a boss 4-1-2 is provided in the middle of the two second through holes 4-1-1 of the middle end plate 4 to ensure that the middle end plate 4 and the outer frame 1 of the module are welded and fixed.
  • the main body of the intermediate end plate 4 may be a panel made of aluminum alloy material with a certain thickness.
  • FIG. 6 another schematic diagram of the exploded structure of the soft pack battery mold of this embodiment.
  • the module side plate 3 and the middle end plate 4 are welded and fixed; the module end plate 2 is welded and fixed with the module outer frame 1 and the module side plate 3 .
  • the module assembly realizes electrical connection and fixation (pole lug welding);
  • the thermal conductive adhesive is cured and the module is stored upright.

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Battery Mounting, Suspending (AREA)

Abstract

本发明提供了一种软包模组及含有其的电动汽车。该软包模组包括至少两个模块总成，模块总成沿模块总成长度方向排列，相邻模块总成的中间设置用于固定模块总成的中间端板。本发明的软包模组具有较高的体积利用率。

Description

一种软包模组及含有其的电动汽车 技术领域
本发明涉及一种软包模组，尤其涉及一种两个模组在长度方向上叠加的软包大模组，属于电池技术领域。
背景技术
相比较硬壳电池，软包电池具有电池能量密度高的优点，然而相同尺寸的软包电池模组的电量相比硬壳电池往往不具备明显的优势。这是因为现有的软包电池的电芯的体积利用率不高，而且由电芯做成模组的体积利用率相比较硬壳电池模组的体积利用率有较大差距。
软包电芯做成软包模组的体积利用率不高有相当一部分原因是电芯长度方向利用率不高。即由于现有软包电池模组两端具有端板，而且模组利用端板上的四个固定孔固定，导致在模组长度方向尺寸利用率不高。
发明内容
为了解决上述技术问题，本发明的目的在于提供一种模组长度为两倍于现有的390模组的长度，体积利用率较高的软包模组。
为了实现上述目的，本发明提供了一种软包模组，该软包模组包括至少两个模块总成和包裹模块总成的外壳，模块总成沿模块总成长度方向排列，相邻模块总成的中间设置用于固定模块总成的中间端板。
在本发明的一具体实施方式中，该软包模组包括两个模块总成。
在本发明的一具体实施方式中，模块总成可以通过中间端板实现串联，也可以分别与外部其他模组实现电连接。
在本发明的一具体实施方式中，软包模组包括用于包裹模块总成的外壳，中间端板通过通孔与外壳固定连接，例如先通过螺栓预先固定定位，然后通过焊接进行固定。通孔优选设置两个，两个通孔与外框的通孔对应。
在本发明的一具体实施方式中，中间端板设置凸台，凸台与软包模组的外壳固定连接。优选凸台设置在中间两个通孔之间。中间端板通过该凸台与模组外壳焊接固定。
在本发明的一具体实施方式中，中间端板对应模块总成的两个侧面设置绝缘层。绝缘层优选为PC材质，用于电绝缘内部的模块总成。中间端板可以为铝合金材料制成的具有一定厚度的面板。
在本发明的一具体实施方式中，每个模块总成为多个串联的芯体总成，每个芯体总成为多个并联的芯体，芯体为叠芯或卷芯。
在本发明的一具体实施方式中，软包模组的外壳包括模组外框、模组侧板和模组端板；
模组外框包括第一面板、第二面板以及第一面板对立面的第三面板，第二面板分别与第一面板、第三面板固定连接，模组侧板分别与第一面板和第三面板固定连接；模组外框与模组侧板固定连接形成具有两端开口的内部空间，模块总成置于内部空间中；两个模组端板与模组外框和模组侧板固定连接，覆盖两端开口；模组端板的内表面设置模组盖板，模组盖板的内表面设置盖板总成。
在本发明的一具体实施方式中，中间端板靠近第三面板的侧面，设置两个与第三面板的通孔对应的通孔。第三面板的通孔、中间端板的通孔用于穿过螺栓，螺栓与外部箱体的中间梁上预埋的螺母锁紧固定，以实现软包模组的整体固定。
在本发明的一具体实施方式中，模组外框的第三面板靠近中间端板的位置设置两个通孔。该第三面板上的两个通孔与中端板的两个通孔的位置相匹配，用于穿过螺栓。
在本发明的一具体实施方式中，模组外框的中间部位设置有横向贯通第一面板的切槽。
在本发明的一具体实施方式中，模组侧板的中间部位的下端设置有与模组外框的切槽匹配的凹槽。切槽和凹槽配合以使模组固定在外部箱体的中间梁上。
在本发明的一具体实施方式中，模组外框的第二面板在靠近第一面板的部分设置有沿第二面板长度方向向两边延伸的伸出面。
在本发明的一具体实施方式中，该软包模组的长度为390标准模组的长度的两倍，高度和宽度与390标准模组相同。
在本发明的一具体实施方式中，模组端板的内表面设置模组盖板，模组盖板的内表面设置盖板总成。其中，模组盖板用于绝缘模块总成，模组盖板总成用于电连接模块总成。
本发明还提供了一种电动汽车，该电动汽车包括上述软包模组。
本发明的软包模组的长度是标准390模组长度的两倍，采用两个模块总成在长度方向叠加，共用中间的端板和固定孔的方式，提高了长度方向尺寸利用率。
本发明的软包模组不仅可以节省一个端板和两个固定孔的物料及尺寸，而且中间端板可以做出台阶固定在外部箱体的中间梁上，从而更好的利用了箱体的有限空间；而且 在平放模块总成时，在侧面方向可以设置一整块液冷板进行热管理交互。
附图说明
图1是本发明的软包电池模组的结构示意图。
图2是本发明的软包电池模组的分解结构示意图。
图3是本发明的软包电池模组外框的结构示意图。
图4是本发明的软包电池模组侧板的结构示意图。
图5是本发明的软包电池模组中间端板的结构示意图。
图6是本发明的软包电池模组的另一分解结构示意图。
主要附图符号说明：
1、模组外框；2、模组端板；3、模组侧板；4、中间端板；5、模块总成；6、盖板总成；7、盖板；1-1、第一切槽；1-2、第一通孔；1-3、第一伸出面；1-4、第二面板；1-5、第三面板；1-6、第一面板；1-7、第一凸起；3-1、凹槽；3-2、豁口；3-3、焊接筋；3-4、第二伸出面；4-2、绝缘层；4-1-1、第二通孔；4-1-2、凸台。
具体实施方式
为了对本发明的技术特征、目的和有益效果有更加清楚的理解，现对发明的技术方案进行以下详细说明，但不能理解为对本发明的可实施范围的限定。
实施例
如图1所示，本实施例提供了一种长度为390标准模组长度两倍的软包模组，宽度和高度尺寸与标准390模组的宽度和高度一致。其具体长度尺寸为390标准模组的长度的两倍加上外部箱体的中间梁的尺寸。
该软包模组包括模组外框1、模组端板2、模组侧板3、中间端板4和两个模块总成5及相关电气和绝缘件等。模组端板4设置4个通孔，用于穿过螺栓。模组通过模组端板的4个通孔、中间端板的2个第二通孔4-1-1固定在外部箱体的中间梁上，中间端板4、模组外框1及模组侧板3可以设置匹配的台阶以使中间端板4架在外部箱体的中间梁上固定。
如图2所示，两个模块总成5沿模块总成长度方向分别固定在中间端板4的两端。模组外框1与模组侧板3固定连接，可以形成具有四个面的类长方体结构，该类长方体结构两端开口。模组外框1和模组侧板3固定连接形成的内部空间包裹模块总成的外侧周。模块总成的两个端面(类长方形的两端开口)设置盖板总成6，盖板总成6的外表面设置盖板7，盖板7的外表面设置模组端板2。
如图3所示，本实施例的模组外框1包括第一面板1-6、第二面板1-4和第三面板1-5，第二面板1-4分别与第一面板1-6和第三面板1-5垂直固定连接。模组外框1为铝合金板冲压折弯结构。为轻量化，其厚度可以为1mm。模组外框1的中间底部设置有横向贯通第一面板的第一切槽1-1，以方便模块总成5固定在外部箱体的中间梁上。为保证模组中部固定，模组外框1的第三面板1-5中间靠两边的位置对称分布2个可穿入螺栓的第一通孔1-2。2个螺栓穿过第一通孔1-2，穿入从中间端板4的第二通孔4-1-1，然后到外部箱体的中间梁上的预埋螺母中锁紧固定。模组外框1的第二面板1-4靠近第一面板1-6的部分设置第一伸出面1-3，第一伸出面1-3为第二面板1-4沿长度方向向两端的延伸面。第二面板1-4的一个长度边的长度与第一面板1-6的长度相同，第二面板1-4的另一个长度边的长度与第三面板1-5的长度相同。第二面板1-4的第一伸出面1-3分别与模组端板2的一个侧边焊接固定；模组外框1的第一面板1-6的侧边分别与两端模组端板2的底边焊接。第三面板1-5与模组侧板3连接的长度边上可以设置有多个第一凸起1-7。
模组外框1的中间部位设置有横向贯穿第一面板1-6的第一切槽1-1，第二面板1-4中间部位的第一切槽1-1的上方区域与中间端板4的侧面焊接固定，模组外框1的第三面板1-5的第一通孔1-2中间区域与中间端板4上表面的凸台4-1-2焊接固定。
如图4所示，模组侧板3中间偏下位置设有和模组外框1的第一切槽1-1相对应的凹槽3-1。第一切槽1-1和凹槽3-1保证模组固定在外部箱体的中间梁上。模组侧板3的凹槽3-1的上方区域与中间端板4的另一侧面焊接固定。为保证与模组外框1焊接固定，模组侧板3的两个长度边均设有一体挤压成型的焊接筋3-3。模组侧板3靠近第一面板的部分设置有沿模组侧板3的长度方向向两端延伸的第二伸出面3-4。第二伸出面3-4与第一伸出面1-3对应设置。第二伸出面3-4分别与两端的模组端板2的另一侧面焊接固定。在模组侧板3的焊接筋3-3均布设置多道豁口3-2。豁口3-2的位置与第一凸起1-7匹配，模组外框1上的第一凸起1-7插入到豁口3-5中；从而实现模组侧板3与模组外框1长度方向的固定。模组侧板3可以为铝合金型材挤出结构。
如图5所示，中间端板4靠近模块总成5的两个表面各粘贴有一块绝缘层4-2，绝缘层优先PC材质，保证与内部电芯的电绝缘。中间端板4靠近第三面板1-5的表面的两端设置有两个贯通的第二通孔4-1-1，用以穿过螺栓。中间端板4两个第二通孔4-1-1的中间设有一个凸台4-1-2，以保证中间端板4与模组外框1焊接固定。中间端板4的主体可以为铝合金材质制成的具有一定厚度的面板。
如图6所示，本实施例的软包电池模另一分解结构示意图。堆叠好两个模块总成5电气连接固定(极耳焊接)；模组外框1内部下侧边涂导热结构胶，分别入两个模块总成5和中间端板；模组外框1、模组侧板3和中间端板4焊接成固定；模组端板2与模组外框1和模组侧板3焊接固定。
本实施例的软包电池模组可以按照以下顺序组装：
首先，堆叠好两个模块总成；
模块总成实现电气连接固定(极耳焊接)；
模组外框内部下侧边涂导热结构胶，分别装入两个模块总成，并放置中间端板；
组装模组两端绝缘组件，通过工装组装模组侧板，分别将模组外框、模组侧板和中间端板焊接成整体；
组装两端模组端板，分别将模组端板与模组外框和模组侧板焊接；
焊接完成后导热胶固化后将模组正放保存。

Claims (15)

  1. 一种软包模组，其中，该软包模组包括至少两个模块总成，模块总成沿模块总成长度方向排列，相邻模块总成的中间设置用于固定所述模块总成的中间端板。
  2. 根据权利要求1所述的软包模组，其中，该软包模组包括两个模块总成。
  3. 根据权利要求1所述的软包模组，其中，模块总成通过中间端板实现串联，或分别与外部其他模组实现电连接。
  4. 根据权利要求1所述的软包模组，其中，软包模组包括用于包裹模块总成的外壳，所述中间端板通过通孔与所述外壳固定连接。
  5. 根据权利要求1所述的软包模组，其中，所述中间端板设置凸台，所述凸台与软包模组的外壳固定连接。
  6. 根据权利要求1所述的软包模组，其中，所述中间端板对应模块总成的两个侧面设置绝缘层。
  7. 根据权利要求1所述的软包模组，其中，每个模块总成为多个串联的芯体总成，每个芯体总成为多个并联的芯体，芯体为叠芯或卷芯。
  8. 根据权利要求1所述的软包模组，其中，软包模组的外壳包括模组外框、模组侧板和模组端板；
    模组外框包括第一面板、第二面板以及第一面板对立面的第三面板，第二面板分别与第一面板、第三面板固定连接，模组侧板分别与第一面板和第三面板固定连接；模组外框与模组侧板固定连接形成具有两端开口的内部空间，模块总成置于内部空间中；两个模组端板与模组外框和模组侧板固定连接，覆盖两端开口；
    模组端板的内表面设置模组盖板，模组盖板的内表面设置盖板总成。
  9. 根据权利要求8所述的软包模组，其中，中间端板靠近第三面板的侧面，设置两个与第三面板的通孔对应的通孔。
  10. 根据权利要求8所述的软包模组，其中，模组外框的第三面板靠近中间端板的位置设置两个通孔。
  11. 根据权利要求8所述的软包模组，其中，模组外框的中间部位设置有横向贯通第一面板的切槽；
    模组侧板的中间部位的下端设置有与模组外框的切槽匹配的凹槽。
  12. 根据权利要求8所述的软包模组，其中，模组外框的第二面板在靠近第一面板的部分设置有沿第二面板长度方向向两边延伸的伸出面。
  13. 根据权利要求1所述的软包模组，其中，该软包模组的长度为390标准模组的 长度的两倍，高度和宽度与390标准模组相同。
  14. 根据权利要求8所述的软包模组，其中，模组端板的内表面设置模组盖板，模组盖板的内表面设置盖板总成。
  15. 一种电动汽车，其中，该电动汽车包括权利要求1-14任一项所述的软包模组。
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