WO2020135154A1 - 电池包及用于电池包的框体 - Google Patents

电池包及用于电池包的框体 Download PDF

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Publication number
WO2020135154A1
WO2020135154A1 PCT/CN2019/125994 CN2019125994W WO2020135154A1 WO 2020135154 A1 WO2020135154 A1 WO 2020135154A1 CN 2019125994 W CN2019125994 W CN 2019125994W WO 2020135154 A1 WO2020135154 A1 WO 2020135154A1
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WIPO (PCT)
Prior art keywords
battery pack
stepped portion
frame
heat exchange
battery module
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/CN2019/125994
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English (en)
French (fr)
Inventor
王衡
季进清
张文辉
钱木
项延火
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Contemporary Amperex Technology Co Ltd
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Contemporary Amperex Technology Co Ltd
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Filing date
Publication date
Application filed by Contemporary Amperex Technology Co Ltd filed Critical Contemporary Amperex Technology Co Ltd
Publication of WO2020135154A1 publication Critical patent/WO2020135154A1/zh
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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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
    • H01M10/61—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
    • H01M10/61—Types of temperature control
    • H01M10/615—Heating or keeping warm
    • 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
    • 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 field of batteries, and more particularly to a battery pack and a frame for the battery pack.
  • the battery pack In the field of batteries, the battery pack includes a frame body and a heat exchange plate.
  • the frame body and the heat exchange plate form an accommodation space for accommodating the battery module.
  • the battery module is supported on the heat exchange plate.
  • the heat exchange plate and the battery of the battery module perform Heat exchange.
  • the support strength of the heat exchange plate is high, which leads to the overall weight of the battery pack is heavy, the rigidity of the battery pack is increased and the adjustment is difficult, and the design is complicated.
  • the purpose of the present application is to provide a battery pack and a frame body for the battery pack, which can reduce the requirement for the support strength of the heat exchange plate.
  • the present application provides a frame for a battery pack, including a first beam, a second beam, a third beam and a fourth beam, the first beam and the second beam are opposite Spaced apart, the third beam and the fourth beam are opposite and spaced apart;
  • the first beam has a first stepped portion located on the lateral side of the first beam;
  • the second beam has a second stepped portion and the second stepped portion is located The lateral side of the second beam, the second stepped portion is opposite to the first stepped portion;
  • the third beam has a third stepped portion, the third stepped portion is located on both longitudinal sides of the third beam, and the third on both longitudinal sides of the third beam
  • the stepped portions are respectively overlapped and fixed on the first stepped portion of the first beam and the second stepped portion of the second beam;
  • the fourth beam has a fourth stepped portion, and the fourth stepped portion is located on both longitudinal sides of the fourth beam.
  • the fourth step portions on the longitudinal sides of the four beams are overlapped and fixed on the first
  • the first beam is mirror-symmetric with respect to its lateral centerline, and the first beam and the second beam are the same in shape and size.
  • the third beam is mirror-symmetric with respect to its lateral centerline.
  • the fourth beam is mirror-symmetric with respect to its lateral centerline.
  • the frame further includes a fifth beam, the fifth beam has a fifth stepped portion, the fifth stepped portion is located on both longitudinal sides of the fifth beam, and the fifth stepped portions on both longitudinal sides of the fifth beam overlap And fixed on the upper surface of the third beam and the upper surface of the fourth beam.
  • the fifth beam is mirror-symmetric with respect to its lateral centerline.
  • the first beam, the second beam, the third beam, the fourth beam, and the fifth beam are profiles with cavities.
  • the present application provides a battery pack, including: the frame for a battery pack according to the first aspect; and a battery module, the battery module is located in the third beam to the third The two sides in the direction of the four beams are overlapped and fixed on the upper surface of the third beam and the upper surface of the fourth beam, respectively.
  • the battery pack further includes a heat exchange plate.
  • the heat exchange plate is fixed to at least the first beam, the second beam, the third beam, and the fourth beam of the frame from below.
  • the second beam, the third beam, and the fourth beam form an upwardly-open storage space for accommodating the battery module, and the heat exchange plate supports the battery module from below and performs heat exchange with the battery module.
  • the battery module has a plurality of batteries and two end plates, the plurality of batteries are arranged along the direction of the third beam to the fourth beam, and the two end plates are located at both ends of the arrangement direction of the plurality of batteries, Each end plate is provided with lugs, and the lugs of the two end plates are respectively overlapped and fixed on the upper surface of the third beam and the upper surface of the fourth beam.
  • the beneficial effects of the present application are as follows:
  • the third step portions on both longitudinal sides of the third beam are overlapped and fixed to the first step portion of the first beam and the second step of the second beam, respectively
  • the fourth step portion on both longitudinal sides of the fourth beam overlaps and is fixed on the first step portion of the first beam and the second step portion of the second beam, the upper surface of the third beam and the fourth beam
  • the upper surface is used to support and fix the battery module, thereby changing the way of simply supporting the battery module with the heat exchange plate, which can reduce the requirement for the support strength of the heat exchange plate.
  • the lap design can also increase the rigidity of the battery pack and reduce the difficulty of adjustment, simplify the design quickly, and verify and modify the design quickly.
  • FIG. 1 is an exploded perspective view of a battery pack according to the present application.
  • FIG. 2 is an enlarged view of the circled part of FIG. 1.
  • FIG 3 is a perspective view of a frame of a battery pack according to the present application.
  • 4A is an assembly schematic view of the third beam overlapping with the first beam and the second beam.
  • 4B is an exploded schematic view of the separation of the third beam from the first beam and the second beam.
  • FIG. 5A is an assembly diagram of the fourth beam overlapping with the first beam and the second beam.
  • 5B is an exploded schematic view of the separation of the fourth beam from the first beam and the second beam.
  • 6A is an assembly diagram of the fifth beam overlapping with the third beam and the fourth beam.
  • 6B is an exploded schematic view of the separation of the fifth beam from the third beam and the fourth beam.
  • FIG. 7 is a cross-sectional view of a heat exchange plate of a battery pack according to the present application.
  • FIG. 1 is an exploded perspective view of a battery pack according to the present application.
  • FIG. 2 is an enlarged view of the circled part of FIG. 1.
  • the battery pack according to the present application includes a frame 1 and a battery module 2.
  • the battery pack further includes a heat exchange plate 3, a heat insulation pad 4 and a protective plate 5.
  • FIG. 3 is a perspective view of a frame of a battery pack according to the present application.
  • 4A is an assembly schematic view of the third beam overlapping with the first beam and the second beam.
  • 4B is an exploded schematic view of the separation of the third beam from the first beam and the second beam.
  • FIG. 5A is an assembly diagram of the fourth beam overlapping with the first beam and the second beam.
  • 5B is an exploded schematic view of the separation of the fourth beam from the first beam and the second beam.
  • 6A is an assembly diagram of the fifth beam overlapping with the third beam and the fourth beam.
  • 6B is an exploded schematic view of the separation of the fifth beam from the third beam and the fourth beam.
  • 7 is a cross-sectional view of a heat exchange plate of a battery pack according to the present application.
  • the frame 1 includes a first beam 11, a second beam 12, a third beam 13, and a fourth beam 14, as shown in FIG.
  • the frame 1 further includes a fifth beam 15 as shown in FIG. 3.
  • the first beam 11 and the second beam 12 are opposite and spaced apart, and the third beam 13 and the fourth beam 14 are opposite and spaced apart, as shown in FIG. 3.
  • the first beam 11 has a first step 111, which is located on the lateral side of the first beam 11, as shown in FIGS. 4B and 5B.
  • the second beam 12 has a second stepped portion 121 located on the lateral side of the second beam 12, and the second stepped portion 121 is opposed to the first stepped portion 111 as shown in FIGS. 4B and 5B.
  • the third beam 13 has a third stepped portion 131, which is located on both longitudinal sides of the third beam 13, and the third stepped portions 131 on both longitudinal sides of the third beam 13 are overlapped and fixed (for example, by bonding , Bolting or welding such as MIG welding) on the first step portion 111 of the first beam 11 and the second step portion 121 of the second beam 12, as shown in FIG. 4B.
  • the upper surface 132 of the third beam 13 supports and fixes the battery module 2.
  • the overlapped fingers described here are joined as shown in FIGS. 3, 4A and 4B, that is, the first step portion 111, the second step portion 121 are all positive steps, and the third step portion 131
  • the positive step is complementary to the inverted step. In other words, overlap here refers to step-to-step engagement.
  • the fourth beam 14 has a fourth stepped portion 141, and the fourth stepped portion 141 is located on both longitudinal sides of the fourth beam 14, and the fourth stepped portions 141 on both longitudinal sides of the fourth beam 14 are overlapped and fixed (for example, by bonding, Bolt fixing or welding such as MIG welding) is on the first step portion 111 of the first beam 11 and the second step portion 121 of the second beam 12, as shown in FIG. 5B.
  • the upper surface 142 of the fourth beam 14 is used to support and fix the battery module 2.
  • the overlapped fingers described here are joined as shown in FIGS.
  • first beam 11 and the second beam 12 and the fourth beam 14 are respectively overlapped by the third beam 13 to overlap the first beam 11 and the second beam 12, the first beam 11, the second beam 12, the third The beam 13 and the fourth beam 14 are enclosed in a circumferentially closed shape, and can be used as the entire outer frame or as an inner frame unit with a closed circumference to accommodate and support the battery module 2.
  • the fifth beam 15 has a fifth stepped portion 151, and the fifth stepped portion 151 is located on both longitudinal sides of the fifth beam 15, and the fifth stepped portions 151 on both longitudinal sides of the fifth beam 15 are overlapped and fixed (for example, by bonding, Bolted or welded such as MIG welding) on the upper surface 132 of the third beam 13 and the upper surface 142 of the fourth beam 14, as shown in FIGS. 3 and 6B.
  • the overlapping mentioned here means that the fifth stepped portion 151 engages the upper surface 132 of the third beam 13 and the upper surface 142 of the fourth beam 14 with an inverted step.
  • the fifth beam 15 divides the receiving space surrounded by the first beam 11, the second beam 12, the third beam 13 and the fourth beam 14 into sub-receiving spaces, so that each receiving space opens to receive the battery module 2.
  • the cable 6 is arranged on the top surface of the fifth beam 15 so that the routing path of the cable 6 becomes orderly and saves space.
  • staggered clips may be provided on the fifth beam 15 to clamp the cable 6.
  • FIG. 3 there are two fifth beams 15 which divide the storage space into three sub-housing spaces, one sub-housing space houses one battery module 2, but not limited to this, the number of fifth beams 15 and each sub-housing space The number of the battery modules 2 accommodated can be changed according to actual needs.
  • the fifth beams 15 are provided in a plurality and spaced apart from each other.
  • the first beam 11 is mirror-symmetric with respect to its lateral center line C11, as shown in FIG. 3.
  • the manufacturing of the first beam 11 is simplified.
  • the first beam 11 and the second beam 12 are the same in shape and size, in other words, the second beam 12 is also mirror-symmetric with respect to its lateral center line C12, so that the first beam 11 and the second beam 12 become universal , Reducing the number of assembly processes and components.
  • the third beam 13 is mirror-symmetric with respect to its lateral center line C13, as shown in FIG. 3.
  • the manufacturing of the third beam 13 is simplified.
  • the third step portions 131 on the longitudinal sides of the third beam 13 are respectively The overlapping of the first step portion 111 of the one beam 11 and the second step portion 121 of the second beam 12 becomes simple and common to both ends.
  • the fourth beam 14 is mirror-symmetric with respect to its lateral center line C14, as shown in FIG. 3.
  • the manufacturing of the fourth beam 14 is simplified.
  • the fourth step portions 141 on both longitudinal sides of the fourth beam 14 are The overlapping of the first step portion 111 of the one beam 11 and the second step portion 121 of the second beam 12 becomes simple and common to both ends.
  • the fifth beam 15 is mirror-symmetric with respect to its lateral center line C15, as shown in FIG. 3.
  • the manufacture of the fifth beam 15 is simplified.
  • the overlapping of the fifth stepped portions 151 on both longitudinal sides of the fifth beam 15 with the upper surface 132 of the third beam 13 and the upper surface 142 of the fourth beam 14 becomes simple and common to both ends.
  • the first beam 11, the second beam 12, the third beam 13, the fourth beam 14 and the fifth beam 15 are made of metal, such as aluminum alloy, and can be die-cast or extruded profiles.
  • the first beam 11, the second beam 12, the third beam 13, the fourth beam 14, and the fifth beam 15 may have a cavity, that is, they are profiles with a cavity.
  • the longitudinal direction may be the X direction and the lateral direction may be the Y direction (eg, the first beam 11, the second beam 12, and the fifth beam 15), or the longitudinal direction may be the Y direction and the lateral direction may be the X direction (
  • the horizontal and vertical directions are the direction of the beam structure itself, that is, the local coordinate system, which is the overall coordinate system with the XYZ direction of the battery pack in FIG. 1, two There is no strict correspondence between coordinate systems.
  • the battery module 2 has a plurality of batteries 21 and two end plates 22.
  • the plurality of batteries 21 are arranged along the direction of the third beam 13 to the fourth beam 14, and the two end plates 22 are respectively located in a plurality of Both ends of the battery 21 in the arrangement direction.
  • Each end plate 22 is provided with lugs 221.
  • the lugs 221 of the two end plates 22 are overlapped and fixed (for example, by bolts) on the upper surface 132 of the third beam 13 and the upper surface 142 of the fourth beam 14.
  • the battery 21 may generally include a case, an electrode assembly and an electrolyte housed in the case.
  • the electrode assembly includes a positive electrode sheet, a negative electrode sheet, and a separator.
  • the battery 21 may be a can-type (or hard-shell) battery as shown in the figure, as shown in FIG. 1, accordingly, the case includes a top cover and a case assembled with the top cover; or the battery 21 may be a pouch type (or soft Package) battery (not shown), the casing is made of encapsulating film (for example, aluminum-plastic film).
  • the heat exchange plate 3 is fixed to at least the first beam 11, the second beam 12, the third beam 13 and the fourth beam 14 of the frame 1 from below.
  • the heat exchange plate 3 and the first beam 11, the second beam 12, the third The beam 13 and the fourth beam 14 form an upwardly open storage space for storing the battery module 2, and the heat exchange plate 3 supports the battery module 2 from below and performs heat exchange with the battery module 2.
  • the heat exchange plate 3 includes a first plate 31 and a second plate 32.
  • the second plate 32 is combined with the heat exchange plate 3 from below and forms a flow path F for the heat exchange medium to flow, for example, the first plate 31 and/or the second plate 32 is stamped and formed.
  • the heat exchange plate 3 is a material with high thermal conductivity, preferably a metal material, and more preferably an aluminum alloy material.
  • the heat insulation pad 4 is disposed below the heat exchange plate 3, as shown in FIG. By the arrangement of the heat insulation pad 4, at least the heat transfer in the downward direction of the heat exchange plate 3 is blocked, and then the battery 21 is kept warm.
  • the material of the heat insulation pad 4 may be heat insulation cotton or foam.
  • the protective plate 5 is supported by the thermal insulation pad 4 and the heat exchange plate 3 from below, as shown in FIG. 1.
  • the protective plate 5 protects the heat exchange plate 3 from being damaged by external force and fails due to external force impact (for example, flying stone).
  • the material of the protective plate 5 is preferably a material with strong impact resistance, such as aluminum alloy, stainless steel, high-strength steel, hot-dip galvanized bidirectional DP high-strength alloy steel, and the like.
  • the third step portions 131 on both longitudinal sides of the third beam 13 are overlapped and fixed to the first step portion 111 of the first beam 11 and the second step portion 121 of the second beam 12, respectively
  • the fourth step portions 141 on both longitudinal sides of the fourth beam 14 are overlapped and fixed on the first step portion 111 of the first beam 11 and the second step portion 121 of the second beam 12, the upper side of the third beam 13
  • the surface 132 and the upper surface 142 of the fourth beam 14 are used to support and fix the battery module 2, thereby changing the way in which the heat exchange plate 3 simply supports the battery module 2 and can reduce the support strength requirements of the heat exchange plate 3.
  • the lap design can also increase the rigidity of the battery pack and reduce the difficulty of adjustment, simplify the design quickly, and verify and modify the design quickly.

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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

本申请提供了一种电池包以及用于电池包的框体。用于电池包的框体包括相对并间隔开的第一梁和第二梁以及相对并间隔开的第三梁和第四梁；第一梁具有位于其横向侧的第一台阶部；第二梁具有位于其横向侧的与第一台阶部相对的第二台阶部；第三梁具有位于其纵向两侧的第三台阶部，第三台阶部分别搭接并固定在第一台阶部和第二台阶部上；第四梁具有位于其纵向两侧的第四台阶部，第四台阶部分别搭接并固定在第一台阶部和第二台阶部上；第三梁的上表面和第四梁的上表面用于支撑并固定电池模组。电池包包括所述用于电池包的框体以及电池模组，电池模组分别搭接并固定在第三梁的上表面和第四梁的上表面上。由此，能降低对换热板的支撑强度的要求。

Description

电池包及用于电池包的框体 技术领域
本申请涉及电池领域，更具体地涉及一种电池包及用于电池包的框体。
背景技术
在电池领域中，电池包包括框体以及换热板，框体以及换热板形成收容电池模组的收容空间，电池模组支撑在换热板上，换热板与电池模组的电池进行热交换。为了保证对电池模组的支撑，对换热板的支撑强度要求高，这导致电池包的整体重量偏重，电池包的刚度的提高及调整的难度大，设计复杂。
发明内容
鉴于现有技术中存在的问题，本申请的目的在于提供一种电池包及用于电池包的框体，其能降低对换热板的支撑强度的要求。
为了实现上述目的，在第一方面，本申请提供了一种用于电池包的框体，包括第一梁、第二梁、第三梁和第四梁，第一梁和第二梁相对并间隔开，第三梁和第四梁相对并间隔开；第一梁具有第一台阶部，第一台阶部位于第一梁的横向侧；第二梁具有第二台阶部，第二台阶部位于第二梁的横向侧，第二台阶部与第一台阶部相对；第三梁具有第三台阶部，第三台阶部位于第三梁的纵向两侧，第三梁的纵向两侧的第三台阶部分别搭接并固定在第一梁的第一台阶部和第二梁的第二台阶部上；第四梁具有第四台阶部，第四台阶部位于第四梁的纵向两侧，第四梁的纵向两侧第四台阶部分别搭接并固定在第一梁的第一台阶部和第二梁的第二台阶部上；第三梁的上表面和第四梁的上表面用于支撑并固定电池模组。
在一实施例中，第一梁相对其横向中心线镜像对称，且第一梁和第二梁在形状和尺寸上相同。
在一实施例中，第三梁相对其横向中心线镜像对称。
在一实施例中，第四梁相对其横向中心线镜像对称。
在一实施例中，框体还包括第五梁，第五梁具有第五台阶部，第五台阶部位于第五梁的纵向两侧，第五梁的纵向两侧的第五台阶部搭接并固定在第三梁的上表面和第四梁的上表面上。
在一实施例中，第五梁相对其横向中心线镜像对称。
在一实施例中，第一梁、第二梁、第三梁、第四梁以及第五梁为具有型腔的型材。
为了实现上述目的，在第二方面，本申请提供了一种电池包，包括：根据第一方面所述的用于电池包的框体；以及电池模组，电池模组在第三梁到第四梁的方向上的两侧分别搭接并固定在第三梁的上表面和第四梁的上表面上。
在一实施例中，电池包还包括换热板，换热板从下方至少固定于框体的第一梁、第二梁、第三梁以及第四梁，换热板与第一梁、第二梁、第三梁以及第四梁形成收容电池模组的向上开口的收容空间，换热板从下方支撑电池模组并与电池模组进行热交换。
在一实施例中，电池模组具有多个电池和两个端板，多个电池沿第三梁到第四梁的方向排列，两个端板分别位于多个电池的排列方向的两端，各端板设有凸耳，两个端板的凸耳分别搭接并固定在第三梁的上表面和第四梁的上表面上。
本申请的有益效果如下：在根据本申请的电池中，通过第三梁的纵向两侧的第三台阶部分别搭接并固定在第一梁的第一台阶部和第二梁的第二台阶部上，第四梁的纵向两侧第四台阶部分别搭接并固定在第一梁的第一台阶部和第二梁的第二台阶部上，第三梁的上表面和第四梁的上表面用于支撑并固定电池模组，从而改变了单纯用换热板支撑电池模组的方式，能够降低对换热板的支撑强度的要求。此外，搭接设计还能使得电池包的刚度的提高及调整的难度降低，设计简化快速，设计的验证修改快速。
附图说明
图1是根据本申请的电池包的立体分解图。
图2是图1的圆圈部分的放大图。
图3是根据本申请的电池包的框体的立体图。
图4A是第三梁与第一梁和第二梁搭接的组装示意图。
图4B是第三梁与第一梁和第二梁分离的分解示意图。
图5A是第四梁与第一梁和第二梁搭接的组装示意图。
图5B是第四梁与第一梁和第二梁分离的分解示意图。
图6A是第五梁与第三梁和第四梁搭接的组装示意图。
图6B是第五梁与第三梁和第四梁分离的分解示意图。
图7是根据本申请的电池包的换热板的剖视图。
其中，附图标记说明如下：
1框体                        C14横向中心线
11第一梁                     15第五梁
111第一台阶部                151第五台阶部
C11横向中心线                C15横向中心线
12第二梁                     2电池模组
121第二台阶部                21电池
C12横向中心线                22端板
13第三梁                     221凸耳
131第三台阶部                3换热板
132上表面                    31第一板
C13横向中心线                32第二板
14第四梁                     4保温垫
141第四台阶部                5防护板
142上表面                    6线缆
具体实施方式
附图示出本申请的实施例，且将理解的是，所公开的实施例仅仅是本申请的示例，本申请可以以各种形式实施，因此，本文公开的具体细节不应被解释为限制，而是仅作为权利要求的基础且作为表示性的基础用于教导本领域普通技术人员以各种方式实施本申请。
此外，诸如上、下、左、右、前和后等用于说明实施例中的各构件的操 作和构造的指示方向的表述不是绝对的而是相对的，且尽管各构件处于图中所示的位置时这些指示是恰当的，但是当这些位置改变时，这些方向应有不同的解释，以对应所述改变。
图1是根据本申请的电池包的立体分解图。图2是图1的圆圈部分的放大图。
根据本申请的电池包包括框体1以及电池模组2。电池包还包括换热板3、保温垫4以及防护板5。
图3是根据本申请的电池包的框体的立体图。图4A是第三梁与第一梁和第二梁搭接的组装示意图。图4B是第三梁与第一梁和第二梁分离的分解示意图。图5A是第四梁与第一梁和第二梁搭接的组装示意图。图5B是第四梁与第一梁和第二梁分离的分解示意图。图6A是第五梁与第三梁和第四梁搭接的组装示意图。图6B是第五梁与第三梁和第四梁分离的分解示意图。图7是根据本申请的电池包的换热板的剖视图。
框体1包括第一梁11、第二梁12、第三梁13和第四梁14，如图3所示。框体1还包括第五梁15，如图3所示。第一梁11和第二梁12相对并间隔开，第三梁13和第四梁14相对并间隔开，如图3所示。
第一梁11具有第一台阶部111，第一台阶部111位于第一梁11的横向侧，如图4B和图5B所示。
第二梁12具有第二台阶部121，第二台阶部121位于第二梁12的横向侧，第二台阶部121与第一台阶部111相对，如图4B和图5B所示。
第三梁13具有第三台阶部131，第三台阶部131位于第三梁13的纵向两侧，第三梁13的纵向两侧的第三台阶部131分别搭接并固定(例如通过粘接、螺栓固定或诸如MIG焊之类的焊接)在第一梁11的第一台阶部111和第二梁12的第二台阶部121上，如图4B所示。第三梁13的上表面132支撑并固定电池模组2。注意的是，此处所述的搭接指的如图3、图4A和图4B所示的接合情况，即第一台阶部111第二台阶部121均为正台阶，而第三台阶部131为倒台阶，正台阶与倒台阶互补接合。换句话说，此处的搭接指的是台阶相对台阶接合。
第四梁14具有第四台阶部141，第四台阶部141位于第四梁14的纵向两侧，第四梁14的纵向两侧第四台阶部141分别搭接并固定(例如通过粘 接、螺栓固定或诸如MIG焊之类的焊接)在第一梁11的第一台阶部111和第二梁12的第二台阶部121上，如图5B所示。第四梁14的上表面142用于支撑并固定电池模组2。同样地，此处所述的搭接指的如图3、图5A和图5B所示的接合情况，即第一台阶部111第二台阶部121均为正台阶，而第四台阶部141为倒台阶，正台阶与倒台阶互补接合。换句话说，此处的搭接指的是台阶相对台阶接合。
由此，通过第三梁13分别搭接第一梁11和第二梁12以及第四梁14分别搭接第一梁11和第二梁12，第一梁11、第二梁12、第三梁13以及第四梁14围成周圈封闭的形状，可用作整个外框后或者可用作周圈封闭的内框单元，以收容并支撑电池模组2。
第五梁15具有第五台阶部151，第五台阶部151位于第五梁15的纵向两侧，第五梁15的纵向两侧的第五台阶部151搭接并固定(例如通过粘接、螺栓固定或诸如MIG焊之类的焊接)在第三梁13的上表面132和第四梁14的上表面142上，如图3和图6B所示。此处所述的搭接指的是，第五台阶部151以倒台阶接合第三梁13的上表面132和第四梁14的上表面142。第五梁15将第一梁11、第二梁12、第三梁13以及第四梁14围成的收容空间分割成子收容空间，从而各收容空间开收容电池模组2。此外，第五梁15的顶表面上用于布置线缆6，从而线缆6的布线路径变得有序，且节省空间。如图所示，在第五梁15上可以设置交错的卡子(未标示)以夹持线缆6。在图3中，第五梁15为两根，将收容空间分割成三个子收容空间，一个子收容空间收容一个电池模组2，但不限于此，第五梁15的数量以及各子收容空间收容电池模组2的数量可以依据实际需要来改变，换句话说，第五梁15以多个设置且彼此间隔开。第一梁11相对其横向中心线C11镜像对称，如图3所示。由此，第一梁11的制造简化。优选地，第一梁11和第二梁12在形状和尺寸上相同，换句话说，第二梁12也相对其横向中心线C12镜像对称，从而第一梁11和第二梁12变得通用，减少了组装工序和部件的数量。
第三梁13相对其横向中心线C13镜像对称，如图3所示。由此，第三梁13的制造简化。此外，当第一梁11相对其横向中心线C11镜像对称且第一梁11和第二梁12在形状和尺寸上相同时，第三梁13的纵向两侧的第三台阶部131分别与第一梁11的第一台阶部111和第二梁12的第二台阶部121 上的搭接变得简单且在两端通用。
同样地，第四梁14相对其横向中心线C14镜像对称，如图3所示。由此，第四梁14的制造简化。此外，当第一梁11相对其横向中心线C11镜像对称且第一梁11和第二梁12在形状和尺寸上相同时，第四梁14的纵向两侧的第四台阶部141分别与第一梁11的第一台阶部111和第二梁12的第二台阶部121的搭接变得简单且在两端通用。
同样地，第五梁15相对其横向中心线C15镜像对称，如图3所示。由此，第五梁15的制造简化。此外，第五梁15的纵向两侧的第五台阶部151分别与第三梁13的上表面132和第四梁14的上表面142的搭接变得简单且在两端通用。
第一梁11、第二梁12、第三梁13、第四梁14以及第五梁15为金属材质，例如铝合金，可以采用压铸件或挤出型材。为了减重，第一梁11、第二梁12、第三梁13、第四梁14以及第五梁15可以具有型腔，即它们为具有型腔的型材。注意的是，换句话说，纵向可以为X方向而横向可以为Y方向(例如第一梁11、第二梁12以及第五梁15)，或者纵向可以为Y方向而横向可以为X方向(例如第三梁13和第四梁14)，但是在本文中，横向和纵向是梁结构自身的方向，即局部坐标系，其与图1中的电池包的X-Y-Z方向为整体坐标系，两个坐标系之间不存在严格的对应关系。
电池模组2在第三梁13到第四梁14的方向上的两侧分别搭接并固定在第三梁13的上表面132和第四梁14的上表面142上，如图1所示。具体地，参照图1，电池模组2具有多个电池21和两个端板22，多个电池21沿第三梁13到第四梁14的方向排列，两个端板22分别位于多个电池21的排列方向的两端。各端板22设有凸耳221，两个端板22的凸耳221分别搭接并固定(例如通过螺栓)在第三梁13的上表面132和第四梁14的上表面142上。其中，电池21可通常包括壳体以及收容于壳体内的电极组件和电解质。电极组件包括正极片、负极片和隔离膜。电池21可以为如图所示的罐型(或硬壳)电池，如图1所示，相应地，壳体包括顶盖以及与顶盖装配的外壳；或者电池21可以为袋型(或软包)电池(未示出)，壳体由封装膜(例如铝塑膜)制成。
换热板3从下方至少固定于框体1的第一梁11、第二梁12、第三梁13 以及第四梁14，换热板3与第一梁11、第二梁12、第三梁13以及第四梁14形成收容电池模组2的向上开口的收容空间，换热板3从下方支撑电池模组2并与电池模组2进行热交换。如图7所示，换热板3包括第一板31和第二板32，第二板32从下方与换热板3结合并形成供换热介质流动的流道F，例如对第一板31和/或第二板32进行冲压成型。为了提高热交换的效果，换热板3为导热性高的材质，优选金属材料，进一步优选铝合金材质。
保温垫4设置在换热板3的下方，如图1所示。通过保温垫4的设置，至少在换热板3的向下方向的热传递被阻断，进而对电池21进行保温。保温垫4的材料可为保温棉、泡棉等。
防护板5从下方支撑在保温垫4以及换热板3，如图1所示。防护板5在外力冲击(例如飞石)下，保护换热板3不受外力破坏而失效。防护板5的材料优选抗冲击强的材料，例如铝合金、不锈钢、高强度钢、热镀锌双向DP高强度合金钢等。
在根据本申请的电池中，通过第三梁13的纵向两侧的第三台阶部131分别搭接并固定在第一梁11的第一台阶部111和第二梁12的第二台阶部121上，第四梁14的纵向两侧第四台阶部141分别搭接并固定在第一梁11的第一台阶部111和第二梁12的第二台阶部121上，第三梁13的上表面132和第四梁14的上表面142用于支撑并固定电池模组2，从而改变了单纯有换热板3支撑电池模组2的方式，能够降低换热板3的支撑强度的要求。此外，搭接设计还能使得电池包的刚度的提高及调整的难度降低，设计简化快速，设计的验证修改快速。
上面详细的说明描述多个示范性实施例，但本文不意欲限制到明确公开的组合。因此，除非另有说明，本文所公开的各种特征可以组合在一起而形成出于简明目的而未示出的多个另外组合。

Claims (10)

  1. 一种用于电池包的框体(1)，其特征在于，包括第一梁(11)、第二梁(12)、第三梁(13)和第四梁(14)，第一梁(11)和第二梁(12)相对并间隔开，第三梁(13)和第四梁(14)相对并间隔开；
    第一梁(11)具有第一台阶部(111)，第一台阶部(111)位于第一梁(11)的横向侧；
    第二梁(12)具有第二台阶部(121)，第二台阶部(121)位于第二梁(12)的横向侧，第二台阶部(121)与第一台阶部(111)相对；
    第三梁(13)具有第三台阶部(131)，第三台阶部(131)位于第三梁(13)的纵向两侧，第三梁(13)的纵向两侧的第三台阶部(131)分别搭接并固定在第一梁(11)的第一台阶部(111)和第二梁(12)的第二台阶部(121)上；
    第四梁(14)具有第四台阶部(141)，第四台阶部(141)位于第四梁(14)的纵向两侧，第四梁(14)的纵向两侧第四台阶部(141)分别搭接并固定在第一梁(11)的第一台阶部(111)和第二梁(12)的第二台阶部(121)上；
    第三梁(13)的上表面(132)和第四梁(14)的上表面(142)用于支撑并固定电池模组(2)。
  2. 根据权利要求1所述的用于电池包的框体(1)，其特征在于，第一梁(11)相对其横向中心线(C11)镜像对称，且第一梁(11)和第二梁(12)在形状和尺寸上相同。
  3. 根据权利要求2所述的用于电池包的框体(1)，其特征在于，第三梁(13)相对其横向中心线(C13)镜像对称。
  4. 根据权利要求2所述的用于电池包的框体(1)，其特征在于，第四梁(14)相对其横向中心线(C14)镜像对称。
  5. 根据权利要求1所述的用于电池包的框体(1)，其特征在于，框体(1)还包括第五梁(15)，第五梁(15)具有第五台阶部(151)，第五台阶部(151)位于第五梁(15)的纵向两侧，第五梁(15)的纵向两侧的第五台阶部(151)搭接并固定在第三梁(13)的上表面(132)和第四梁(14)的上表面(142)上。
  6. 根据权利要求5所述的用于电池包的框体(1)，其特征在于，第五梁(15)相对其横向中心线(C15)镜像对称。
  7. 根据权利要求5所述的用于电池包的框体(1)，其特征在于，第一梁(11)、第二梁(12)、第三梁(13)、第四梁(14)以及第五梁(15)为具有型腔的型材。
  8. 一种电池包，其特征在于，包括：
    根据权利要求1-7中任一项所述的用于电池包的框体(1)，
    电池模组(2)，电池模组(2)在第三梁(13)到第四梁(14)的方向上的两侧分别搭接并固定在第三梁(13)的上表面(132)和第四梁(14)的上表面(142)上。
  9. 根据权利要求8所述的电池包，其特征在于，
    电池包还包括换热板(3)，
    换热板(3)从下方至少固定于框体(1)的第一梁(11)、第二梁(12)、第三梁(13)以及第四梁(14)，换热板(3)与第一梁(11)、第二梁(12)、第三梁(13)以及第四梁(14)形成收容电池模组(2)的向上开口的收容空间，换热板(3)从下方支撑电池模组(2)并与电池模组(2)进行热交换。
  10. 根据权利要求9所述的电池包，其特征在于，电池模组(2)具有多个电池(21)和两个端板(22)，多个电池(21)沿第三梁(13)到第四梁(14)的方向排列，两个端板(22)分别位于多个电池(21)的排列方向的 两端，各端板(22)设有凸耳(221)，两个端板(22)的凸耳(221)分别搭接并固定在第三梁(13)的上表面(132)和第四梁(14)的上表面(142)上。
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CN206179942U (zh) * 2016-10-27 2017-05-17 常州普莱德新能源电池科技有限公司 一种拼装式电池箱模组固定架及具有其的动力电池箱
CN108365156A (zh) * 2018-04-24 2018-08-03 北京新能源汽车股份有限公司 电池包和车辆
CN209183614U (zh) * 2018-12-29 2019-07-30 宁德时代新能源科技股份有限公司 电池包及用于电池包的框体

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