WO2018099351A1 - 电池模组 - Google Patents

电池模组 Download PDF

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Publication number
WO2018099351A1
WO2018099351A1 PCT/CN2017/113157 CN2017113157W WO2018099351A1 WO 2018099351 A1 WO2018099351 A1 WO 2018099351A1 CN 2017113157 W CN2017113157 W CN 2017113157W WO 2018099351 A1 WO2018099351 A1 WO 2018099351A1
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WO
WIPO (PCT)
Prior art keywords
housing
connecting portion
battery
battery module
module
Prior art date
Application number
PCT/CN2017/113157
Other languages
English (en)
French (fr)
Inventor
张上富
Original Assignee
宁德时代新能源科技股份有限公司
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Publication date
Application filed by 宁德时代新能源科技股份有限公司 filed Critical 宁德时代新能源科技股份有限公司
Publication of WO2018099351A1 publication Critical patent/WO2018099351A1/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
    • H01M10/61—Types of temperature control
    • H01M10/613—Cooling or keeping cold
    • 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
    • H01M10/64—Heating or cooling; Temperature control characterised by the shape of the cells
    • H01M10/647—Prismatic or flat cells, e.g. pouch cells
    • 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
    • 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
    • H01M50/209—Racks, modules or packs for multiple batteries or multiple cells characterised by their shape adapted for prismatic or rectangular 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
    • H01M50/218—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by the material
    • H01M50/22—Mountings; 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
    • H01M50/227—Organic material
    • 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 present application relates to the technical field of battery structures, and in particular, to a battery module.
  • the battery module in the conventional technology mainly includes a battery and a casing. Since the battery module often generates a large amount of heat during use, the battery module mainly relies on the radiant heat of the battery to the casing to achieve heat dissipation of the battery module. .
  • the heat dissipation effect of this heat dissipation method is not ideal.
  • the application provides a battery module to improve the heat dissipation effect of the battery module.
  • the battery module provided by the present application includes a module housing, a battery, and a fixing bracket.
  • the battery is installed in the module housing through the fixing bracket, and the fixing bracket includes a bracket body and a housing connecting portion.
  • the bracket body is connected to the battery, and the module housing has a mounting slot, one side of the housing connecting portion is fixed to the bracket body, and the other side forms a bent free end, and the housing connecting portion Located in the mounting slot, and forming an elastic force between the housing connecting portion and the module housing.
  • the mounting slot is an arcuate slot
  • the housing connecting portion is an arcuate connecting portion
  • a side surface of the housing connecting portion facing the module housing is opposite to an inner wall of the mounting slot fit.
  • opposite sides of the housing connection portion respectively extend to opposite sides of the mounting groove.
  • the housing connecting portion extends from one side of the fixing bracket to the other side of the fixing bracket, and the mounting slot extends from one side of the module housing to the module housing The other side.
  • the module housing comprises a frame and a first end plate and a second end plate respectively mounted on opposite sides of the frame, the mounting groove is formed on the frame, the frame and the frame At least one of the first end plate and the second end plate is in a positional engagement.
  • a positioning groove is further defined in the frame, and at least one of the first end plate and the second end plate is provided with a positioning convex portion, and the positioning convex portion is positioned and matched with the positioning groove.
  • the positioning groove is disposed between every two of the mounting slots, and the positioning slot is opposite to a gap formed between two adjacent batteries.
  • At least one of the first end plate and the second end plate is provided with a mounting boss, the mounting boss extending along a height direction of the battery module, and the assembling boss is inserted
  • the interior of the frame is in contact with the inner wall of the frame.
  • bracket body Preferably, opposite sides of the bracket body are connected to the housing connecting portion.
  • the module housing is integrally provided with a rigid sleeve, and the rigid sleeve is used for the module fastener to pass through.
  • the bracket body is a plastic body, and the housing connecting portion is a metal heat conducting plate, and the bracket body is integrally formed with the housing connecting portion.
  • a shaft is further included, the shaft is disposed in the housing connecting portion, and the shaft is capable of applying an external supporting force to the housing connecting portion.
  • the battery module provided by the present application uses a fixing bracket to fix the battery and the module housing, and one side of the housing connecting portion of the fixing bracket forms a bent free end, and after the battery module is assembled, the housing is connected.
  • An elastic force is formed between the portion and the module housing to enable the housing connecting portion to be more reliably contacted with the module housing, and the contact area between the two can be increased, thereby improving the heat dissipation effect of the battery module. .
  • FIG. 1 is a schematic structural diagram of a battery module according to an embodiment of the present application.
  • Figure 2 is a front elevational view of the structure of Figure 1;
  • Figure 3 is a cross-sectional view taken along line A-A of Figure 2;
  • Figure 4 is an enlarged view of a portion B of Figure 3;
  • FIG. 5 is an exploded view of a battery module according to an embodiment of the present application.
  • FIG. 6 is a schematic structural diagram of a first end plate according to an embodiment of the present application.
  • the battery module of the present application includes a module housing 10, a battery 20, and a fixing bracket 30.
  • the battery 20 can be installed in the module housing 10 through the fixing bracket 30.
  • the number of the batteries 20 is usually set to be plural, and one battery 20 can be respectively fixed on opposite sides of one fixing bracket 30, and a gap is formed between the batteries 20.
  • the fixing bracket 30 may include a bracket body 300 and a housing connecting portion 301.
  • the bracket body 300 is used for connecting to the battery 20.
  • the bracket body 300 can adopt a frame structure, and the battery 20 can be mounted on the bracket body 300 by inserting, snapping, or bonding with a structural thermal conductive adhesive.
  • the bracket body 300 can be a plastic body, and the housing connecting portion 301 can be a metal heat conducting plate.
  • the bracket body 300 is integrally formed with the housing connecting portion 301, for example, by integral injection molding. Such a structure achieves the purpose of improving the structural strength of the fixing bracket 30 by means of integral processing.
  • the housing connecting portion 301 may further be provided as an aluminum plate, and the thickness of the aluminum plate may be 0.6 mm to 1 mm.
  • the module housing 10 has a mounting slot 100 therein, and the number of the mounting slots 100 may be one or more.
  • the housing connecting portion 301 is located in the mounting groove 100, and an elastic force is formed between the housing connecting portion 301 and the module housing 10.
  • the housing connecting portion 301 can be loaded into the mounting groove 100 by means of an interference fit, and the housing connecting portion 301 is deformed during the installation process, thereby generating a tendency to recover deformation, and under the influence of this trend
  • the case connecting portion 301 may be in close contact with the inner wall of the mounting groove 100.
  • an elastic force is formed between the housing connecting portion 301 and the module housing 10, so that the housing connecting portion 301 and the module housing 10 can be more reliably Contact, and can increase the contact area between the two, thereby improving the heat dissipation effect of the battery module.
  • the module housing 10 is disposed as a whole, the overall strength of the battery module can be more effectively ensured, and the heat dissipation area can be increased to improve the heat dissipation effect.
  • the housing connecting portion 301 can be connected only on one side of the bracket body 300, but the entire fixing bracket 30 is usually connected to the module housing 10 on opposite sides, so that To improve the heat dissipation performance of the battery module, the housing connection portion 301 having the above structure may be connected to opposite sides of the bracket body 300.
  • a shaft (not shown) can also be provided, which is inserted through the interior of the housing connecting portion 301, which can be directed to the housing
  • the body connecting portion 301 applies an external supporting force.
  • a gap fit may be formed between the housing connecting portion 301 and the mounting slot of the module housing 10, and then the shaft is inserted into the housing connecting portion 301, so that The shaft applies an external urging force to the housing connecting portion 301, and the housing connecting portion 301 is deformed and more closely fitted with the mounting groove.
  • the structure of the mounting slot 100 can be in various forms.
  • the mounting slot 100 can be an arcuate slot, and the housing connecting portion 301 can be a curved connecting portion, so that the housing connecting portion 301 faces the module housing.
  • One side surface of the body 10 is fitted to the inner wall of the mounting groove 100.
  • the structure of the mounting groove 100 and the housing connecting portion 301 has a smooth extension feature, so that the structural strength of the two is higher.
  • such an arrangement can also make the deformation tendency of the housing connecting portion 301 more stable, preventing the housing connecting portion 301 from being damaged during assembly.
  • the shaft when the foregoing shaft is disposed in the battery module, the shaft can be correspondingly arranged as a cylindrical rod to ensure a larger contact area between the shaft and the housing connecting portion 301, thereby more reliably Transfer the external support force.
  • opposite sides of the housing connecting portion 301 extend to opposite sides of the mounting groove 100, respectively.
  • the cross section of the housing connecting portion 301 refers to a section perpendicular to the longitudinal direction of the battery module.
  • the opposite sides of the housing connecting portion 301 respectively extend to opposite sides of the mounting slot 100 such that the housing connecting portion 301 covers almost all the inner walls of the mounting slot 100, thereby increasing the housing connecting portion 301 and
  • the contact area between the inner walls of the mounting groove 100 achieves the purpose of improving the heat dissipation effect.
  • the previous embodiment describes a dimensional optimization of the housing connection 301 in its cross section, and the dimensions of the housing connection 301 in the length direction of the battery module can be further optimized.
  • the housing connecting portion 301 extends from one side of the fixing bracket 30 to the other side of the fixing bracket 30, and the mounting slot 100 extends from one side of the module housing 10 to the other side of the module housing 10. That is, along the length direction of the module housing 10, the housing connecting portion 301 and the mounting slot 100 extend to opposite ends of the module housing 10 such that the length of the housing connecting portion 301 is as large as possible.
  • the active area between the housing connecting portion 301 and the module housing 10 is greatly increased, thereby improving the heat dissipation effect of the battery module.
  • the module housing 10 can include a frame 101 and a first end plate 102 and a second end plate 103 that are mounted to opposite sides of the frame 101, respectively.
  • the frame 101 can adopt a cylindrical structure, and the processing method can be aluminum extrusion processing, thereby ensuring the dimensional accuracy and structural strength of the frame 101, and at the same time facilitating mass production.
  • the first end plate 102 and the second end plate 103 are fixed to opposite sides of the frame 101 such that the interior of the module housing 10 can form a space for accommodating the battery 20.
  • the first end plate 102 and the second end plate 103 may be fixedly coupled to the frame 101 by fixing bolts 40.
  • the first end plate 102 and the second end plate 103 may also be die-cast aluminum, and the two are welded to the frame 11 by friction stir welding, thereby improving the structural strength of the module case 10.
  • the mounting groove 100 can be opened on the frame 101, and the frame 101 is positioned and engaged with at least one of the first end plate 102 and the second end plate 103.
  • the positioning fit herein refers to a mating form that can be employed in addition to the fixed connection, that is, the frame 101 is combined with at least one of the first end plate 102 and the second end plate 103 in addition to the fixed connection. It is also possible to provide an additional structure such that the frame 101 is pre-positioned with at least one of the first end plate 102 and the second end plate 103 prior to the fixed connection, thereby improving the assembly strength and assembly efficiency of the battery module.
  • the foregoing pre-positioned structure may be: a positioning slot is formed on the frame 101. 104, at least one of the first end plate 102 and the second end plate 103 is provided with a positioning convex portion 105, and the positioning convex portion 105 is positioned and matched with the positioning groove 104.
  • the first end plate 102 or the second end plate 103 may be moved first, so that the positioning convex portion 105 can be inserted into the corresponding positioning groove 104, and then the frame 101 and the first end plate 102 are fixed by the fixing bolts 40. And the second end plate 103 is fixed together.
  • the positioning groove 104 and the positioning convex portion 105 function to realize the pre-positioning, so that the installation positions of the two are relatively diverse, as long as the purpose can be achieved.
  • a positioning groove 104 may be disposed between each two mounting grooves 100, and the positioning groove 104 is adjacent to the positioning groove 104.
  • the gap formed between the two batteries 20 is opposite.
  • the structure can increase the number of the positioning slots 104 and the positioning protrusions 105 such that the positioning area between the frame 101 and the first end plate 102 or the second end plate 103 is larger, thereby improving the positioning strength;
  • the positioning groove 104 and the mounting groove 100 are interspersed so that the force applied to the entire frame 101 can be more evenly distributed, thereby improving the structural strength of the entire battery module.
  • the shape of the mounting groove 100 and the positioning groove 104 may be the same or different.
  • the mounting groove 100 and the positioning groove 104 each adopt a circular arc groove, or the mounting groove 100 adopts a circular arc groove, and the positioning groove 104 adopts a U-shaped groove.
  • other structures can also be employed.
  • first end plate 102 and the second end plate 103 may be provided with a mounting boss 106 extending along the height direction of the battery module and capable of being inserted into the interior of the frame 101. And in contact with the inner wall of the frame 101.
  • the mounting boss 106 can pre-position the assembly between the frame 101 and the first end plate 102 and the second end plate 103 in the other direction of the battery module, thereby more significantly improving the assembly strength and assembly of the battery module. effectiveness.
  • a rigid sleeve 50 may be integrally disposed on the module housing 10 of the battery module, and the rigid sleeve 50 may be passed through a module fastener (such as a bolt).
  • the rigid sleeve 50 can be made of a steel sleeve, and the module housing 10 can be made of a plastic material.
  • the module housing 10 and the rigid sleeve 50 can be processed by integral injection molding.
  • the rigid sleeve 50 may be disposed on the first end plate 102 and the second end plate 103.

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

Abstract

本申请涉及电池结构技术领域，尤其涉及一种电池模组，其包括模组壳体、电池和固定支架，所述电池通过所述固定支架安装于所述模组壳体内，所述固定支架包括支架本体和壳体连接部，所述支架本体与所述电池连接，所述模组壳体上具有安装槽，所述壳体连接部的一侧与所述支架本体固定，另一侧形成弯折自由端，所述壳体连接部位于所述安装槽内，且所述壳体连接部与所述模组壳体之间形成弹性作用力。电池模组装配完成后，壳体连接部与模组壳体之间将形成弹性作用力，以使壳体连接部与模组壳体能够更可靠地接触，并且能够增加两者之间的接触面积，从而提高电池模组的散热效果。

Description

电池模组 技术领域
本申请涉及电池结构技术领域，尤其涉及一种电池模组。
背景技术
随着新能源技术的不断推广，采用电池模组作为能源已经成为比较常见的方式。传统技术中的电池模组主要包括电池和外壳，由于电池模组在使用过程中常常会产生较大的发热量，而该电池模组主要依靠电池向外壳的辐射热量以实现电池模组的散热。此种散热方式的散热效果并不理想。
发明内容
本申请提供了一种电池模组，以提高电池模组的散热效果。
本申请提供的电池模组包括模组壳体、电池和固定支架，所述电池通过所述固定支架安装于所述模组壳体内，所述固定支架包括支架本体和壳体连接部，所述支架本体与所述电池连接，所述模组壳体上具有安装槽，所述壳体连接部的一侧与所述支架本体固定，另一侧形成弯折自由端，所述壳体连接部位于所述安装槽内，且所述壳体连接部与所述模组壳体之间形成弹性作用力。
优选地，所述安装槽为弧形槽，所述壳体连接部为弧形连接部，所述壳体连接部上朝向所述模组壳体的一侧表面与所述安装槽的内壁相贴合。
优选地，在所述壳体连接部的横截面内，所述壳体连接部的相对两侧分别延伸至所述安装槽的相对两侧。
优选地，所述壳体连接部自所述固定支架的一侧延伸至所述固定支架的另一侧，所述安装槽自所述模组壳体的一侧延伸至所述模组壳体的另一侧。
优选地，所述模组壳体包括框架以及分别安装于所述框架的相对两侧的第一端板和第二端板，所述安装槽开设于所述框架上，所述框架与所述 第一端板和所述第二端板中的至少一者定位配合。
优选地，所述框架上还开设定位槽，所述第一端板和所述第二端板中的至少一者上设置定位凸部，所述定位凸部与所述定位槽定位配合。
优选地，每两个所述安装槽之间均设置所述定位槽，所述定位槽与相邻的两个所述电池之间形成的空隙相对。
优选地，所述第一端板和所述第二端板中的至少一者上设置装配凸台，所述装配凸台沿着所述电池模组的高度方向延伸，所述装配凸台插入所述框架的内部，并与所述框架的内壁相接触。
优选地，所述支架本体的相对两侧均连接所述壳体连接部。
优选地，所述模组壳体上一体设置刚性套筒，所述刚性套筒供模组紧固件穿过。
优选地，所述支架本体为塑胶本体，所述壳体连接部为金属导热板，所述支架本体与所述壳体连接部一体成型设置。
优选地，还包括轴杆，所述轴杆穿设在所述壳体连接部内，且所述轴杆能够向所述壳体连接部施加外撑作用力。
本申请提供的技术方案可以达到以下有益效果：
本申请所提供的电池模组采用固定支架实现电池与模组壳体之间的固定，而固定支架的壳体连接部的一侧形成弯折自由端，电池模组装配完成后，壳体连接部与模组壳体之间将形成弹性作用力，以使壳体连接部与模组壳体能够更可靠地接触，并且能够增加两者之间的接触面积，从而提高电池模组的散热效果。
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
图1为本申请实施例提供的电池模组的结构示意图；
图2为图1所示结构的正视图；
图3为图2的A-A向剖视图；
图4为图3中B部分的放大图；
图5为本申请实施例提供的电池模组的爆炸图；
图6为本申请实施例提供的第一端板的结构示意图。
附图标记：
10-模组壳体；
100-安装槽，101-框架，102-第一端板，103-第二端板，104-定位槽，105-定位凸部，106-装配凸台；
20-电池；
30-固定支架；
300-支架本体，301-壳体连接部；
40-固定螺栓；
50-刚性套筒。
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
下面通过具体的实施例并结合附图对本申请做进一步的详细描述。需要说明的是，下文中的“长度方向”、“高度方向”均以图中所示状态为参照。
如图1-6所示，本申请实施例提供了一种电池模组，其包括模组壳体10、电池20和固定支架30，电池20可以通过固定支架30安装于模组壳体10内。具体地，电池20的数量通常设置为多个，一个固定支架30的相对两侧可以分别固定一个电池20，各电池20之间形成空隙。
固定支架30可以包括支架本体300和壳体连接部301。支架本体300用于与电池20连接，具体地，支架本体300可以采用框架结构，电池20可以通过插装、卡接、采用结构导热胶粘接等方式安装在支架本体300上。优选地，支架本体300可以为塑胶本体，壳体连接部301可以为金属导热板，支架本体300与壳体连接部301一体成型设置，例如采用一体注塑的方式加工。此种结构通过一体加工的方式达到提高固定支架30的结构强度这一目的。壳体连接部301进一步可以设置为铝板，此铝板的厚度可以是0.6mm～1mm。
壳体连接部301的一侧与支架本体300固定，另一侧形成弯折自由端， 类似于钩状结构。也就是说，壳体连接部301的一侧相对于另一侧可以产生相对位移。模组壳体10上具有安装槽100，该安装槽100的数量可以是一个或者多个。壳体连接部301位于安装槽100内，且壳体连接部301与模组壳体10之间形成弹性作用力。也就是说，壳体连接部301可以采用过盈配合的方式装入安装槽100内，壳体连接部301在安装过程中会发生变形，进而产生恢复变形的趋势，在这一趋势的作用下，壳体连接部301可以与安装槽100的内壁紧密贴合。
本申请实施例提供的电池模组在装配完成后，壳体连接部301与模组壳体10之间将形成弹性作用力，以使壳体连接部301与模组壳体10能够更可靠地接触，并且能够增加两者之间的接触面积，从而提高电池模组的散热效果。同时，模组壳体10设置为一个整体后，可以更加有效地保证电池模组的整体强度，并增大散热面积，提升散热效果。
设置电池模组的结构时，可以仅在支架本体300的单侧连接壳体连接部301，但是整个固定支架30通常会在相对的两侧均与模组壳体10连接，因此为了更大程度地提升电池模组的散热性能，可以在支架本体300的相对两侧均连接具有上述结构的壳体连接部301。
为了保证壳体连接部301能够更可靠地与模组壳体10接触，还可以设置轴杆(图中未示出)，该轴杆穿设在壳体连接部301的内部，其能够向壳体连接部301施加外撑作用力。在固定支架30与模组壳体10连接的初始状态下，壳体连接部301与模组壳体10的安装槽之间可以是间隙配合，然后将轴杆插入壳体连接部301内，使得轴杆向壳体连接部301施加外撑作用力，壳体连接部301发生变形，并与安装槽更加紧密地配合。
上述安装槽100的结构可以采用多种形式，本申请实施例中，安装槽100可以为弧形槽，壳体连接部301可以为弧形连接部，使得壳体连接部301上朝向模组壳体10的一侧表面与安装槽100的内壁相贴合。采用弧形配合结构后，安装槽100处以及壳体连接部301的结构具有平滑延伸的特点，使得两者的结构强度更高。同时，此种设置方式还可以使得壳体连接部301的变形趋势更加稳定，防止壳体连接部301在装配过程中出现损坏。另外，当电池模组中设置前述的轴杆时，轴杆可以对应设置为圆柱状的杆件，以保证轴杆与壳体连接部301具有更大的接触面积，以此更加可靠地 传递外撑作用力。
进一步地，在壳体连接部301的横截面内，壳体连接部301的相对两侧分别延伸至安装槽100的相对两侧。壳体连接部301的横截面指的是，垂直于电池模组的长度方向的方向上的截面。在此横截面上，壳体连接部301的相对两侧分别延伸至安装槽100的相对两侧，使得壳体连接部301几乎覆盖安装槽100的全部内壁，进而增大壳体连接部301与安装槽100的内壁之间的接触面积，达到提升散热效果的目的。
上一实施例描述了壳体连接部301在其横截面内的尺寸优化方案，而壳体连接部301在电池模组的长度方向上的尺寸也可以进一步优化。具体地，壳体连接部301自固定支架30的一侧延伸至固定支架30的另一侧，安装槽100自模组壳体10的一侧延伸至模组壳体10的另一侧。也就是说，沿着模组壳体10的长度方向，壳体连接部301和安装槽100均延伸至模组壳体10的相对两端处，使得壳体连接部301的长度尺寸尽量大，以此大幅度增加壳体连接部301与模组壳体10之间的作用面积，继而提高电池模组的散热效果。
一种实施例中，模组壳体10可以包括框架101以及分别安装于该框架101的相对两侧的第一端板102和第二端板103。框架101可以采用筒状结构，其加工方式可以是铝挤出加工方式，以此保证框架101的尺寸精度和结构强度，同时便于大批量生产。第一端板102和第二端板103固定在框架101的相对两侧，使得模组壳体10的内部可以形成用于容纳电池20的空间。第一端板102和第二端板103可以通过固定螺栓40与框架101固定连接。当然，第一端板102和第二端板103还可以使用压铸铝，通过搅拌摩擦焊将两者与框架11焊接，以此提高模组壳体10的结构强度。
安装槽100可以开设于框架101上，框架101与第一端板102和第二端板103中的至少一者定位配合。此处的定位配合指的是，除了固定连接以外还可以采用的配合形式，也就是说，框架101与第一端板102和第二端板103中的至少一者除了固定连接的配合方式以外，还可以设置额外的结构，使得框架101与第一端板102和第二端板103中的至少一者在固定连接之前进行预先定位，以此提高电池模组的装配强度和装配效率。
可选地，实现上述预先定位的结构可以是：框架101上开设定位槽 104，第一端板102和第二端板103中的至少一者上设置定位凸部105，该定位凸部105与定位槽104定位配合。装配电池模组时，可以首先移动第一端板102或者第二端板103，使得定位凸部105能够插入对应的定位槽104中，然后再通过固定螺栓40将框架101与第一端板102和第二端板103固定到一起。
由上述方案可知，定位槽104与定位凸部105的作用是实现预先定位，因此两者的设置位置比较多样，只要能够实现这一目的就可以。考虑到框架101上已经开设了安装槽100，因此为了使框架101的结构更加紧凑，结构强度更高，可以在每两个安装槽100之间均设置定位槽104，该定位槽104与相邻的两个电池20之间形成的空隙相对。一方面，此结构可以增大定位槽104和定位凸部105的数量，使得框架101与第一端板102或者第二端板103之间的定位面积更大，以此提高定位强度；另一方面，定位槽104与安装槽100穿插排布，使得整个框架101受到的作用力能够更加均衡地排布，以此提高整个电池模组的结构强度。
通常，上述安装槽100和定位槽104的形状可以相同，也可以不相同。例如，安装槽100和定位槽104均采用圆弧形槽，或者安装槽100采用圆弧形槽，定位槽104采用U形槽。当然，也可以采用其他结构。
另外，第一端板102和第二端板103中的至少一者上可以设置装配凸台106，该装配凸台106沿着电池模组的高度方向延伸，且其能够插入框架101的内部，并与该框架101的内壁相接触。此装配凸台106可以在电池模组的另一方向上对框架101与第一端板102和第二端板103之间的装配提供预先定位，进而更加显著地提升电池模组的装配强度和装配效率。
将本申请实施例提供的电池模组装配完后，就需要将电池模组安装到使用环境中，例如汽车上。为了提高电池模组的安装强度，可以在电池模组的模组壳体10上一体设置刚性套筒50，该刚性套筒50可以供模组紧固件(例如螺栓)穿过。此刚性套筒50可以采用钢套，模组壳体10可以采用塑胶材料制成，模组壳体10与刚性套筒50可以通过一体注塑的方式加工。当模组壳体10包框架101、第一端板102和第二端板103时，此刚性套筒50可以设置在第一端板102和第二端板103上。
以上所述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 (12)

  1. 一种电池模组，其特征在于，包括模组壳体、电池和固定支架，所述电池通过所述固定支架安装于所述模组壳体内，所述固定支架包括支架本体和壳体连接部，所述支架本体与所述电池连接，所述模组壳体上具有安装槽，所述壳体连接部的一侧与所述支架本体固定，另一侧形成弯折自由端，所述壳体连接部位于所述安装槽内，且所述壳体连接部与所述模组壳体之间形成弹性作用力。
  2. 根据权利要求1所述的电池模组，其特征在于，所述安装槽为弧形槽，所述壳体连接部为弧形连接部，所述壳体连接部上朝向所述模组壳体的一侧表面与所述安装槽的内壁相贴合。
  3. 根据权利要求2所述的电池模组，其特征在于，在所述壳体连接部的横截面内，所述壳体连接部的相对两侧分别延伸至所述安装槽的相对两侧。
  4. 根据权利要求1所述的电池模组，其特征在于，所述壳体连接部自所述固定支架的一侧延伸至所述固定支架的另一侧，所述安装槽自所述模组壳体的一侧延伸至所述模组壳体的另一侧。
  5. 根据权利要求1所述的电池模组，其特征在于，所述模组壳体包括框架以及分别安装于所述框架的相对两侧的第一端板和第二端板，所述安装槽开设于所述框架上，所述框架与所述第一端板和所述第二端板中的至少一者定位配合。
  6. 根据权利要求5所述的电池模组，其特征在于，所述框架上还开设定位槽，所述第一端板和所述第二端板中的至少一者上设置定位凸部，所述定位凸部与所述定位槽定位配合。
  7. 根据权利要求6所述的电池模组，其特征在于，每两个所述安装槽之间均设置所述定位槽，所述定位槽与相邻的两个所述电池之间形成的空隙相对。
  8. 根据权利要求5所述的电池模组，其特征在于，所述第一端板和所述第二端板中的至少一者上设置装配凸台，所述装配凸台沿着所述电池模组的高度方向延伸，所述装配凸台插入所述框架的内部，并与所述框架 的内壁相接触。
  9. 根据权利要求1-8中任一项所述的电池模组，其特征在于，所述支架本体的相对两侧均连接所述壳体连接部。
  10. 根据权利要求1-8中任一项所述的电池模组，其特征在于，所述模组壳体上一体设置刚性套筒，所述刚性套筒供模组紧固件穿过。
  11. 根据权利要求1-8中任一项所述的电池模组，其特征在于，所述支架本体为塑胶本体，所述壳体连接部为金属导热板，所述支架本体与所述壳体连接部一体成型设置。
  12. 根据权利要求1-8中任一项所述的电池模组，其特征在于，还包括轴杆，所述轴杆穿设在所述壳体连接部内，且所述轴杆能够向所述壳体连接部施加外撑作用力。
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