WO2019184493A1 - 电池箱体以及电池箱 - Google Patents

电池箱体以及电池箱 Download PDF

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Publication number
WO2019184493A1
WO2019184493A1 PCT/CN2018/124616 CN2018124616W WO2019184493A1 WO 2019184493 A1 WO2019184493 A1 WO 2019184493A1 CN 2018124616 W CN2018124616 W CN 2018124616W WO 2019184493 A1 WO2019184493 A1 WO 2019184493A1
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WO
WIPO (PCT)
Prior art keywords
bottom plate
battery case
grooves
groove
battery
Prior art date
Application number
PCT/CN2018/124616
Other languages
English (en)
French (fr)
Inventor
谢兆林
王鹏
王德荣
产利兵
王增忠
陈宜峰
Original Assignee
宁德时代新能源科技股份有限公司
Priority date (The priority date 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 date listed.)
Filing date
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
Priority to US16/977,508 priority Critical patent/US11539092B2/en
Priority to ES18912287T priority patent/ES2926296T3/es
Priority to EP22184573.8A priority patent/EP4145606B1/en
Priority to EP18912287.2A priority patent/EP3748720B1/en
Publication of WO2019184493A1 publication Critical patent/WO2019184493A1/zh
Priority to US17/990,849 priority patent/US11929515B2/en

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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
    • 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
    • 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
    • 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
    • H01M50/10—Primary casings; Jackets or wrappings
    • 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
    • H01M50/202—Casings or frames around the primary casing of a single cell or a single battery
    • 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
    • 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
    • H01M50/291—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 characterised by their shape
    • 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 battery technologies, and in particular, to a battery case and a battery case.
  • the power battery is also called a secondary battery and is a rechargeable battery.
  • Power batteries are widely used. Low-capacity power batteries can be used in small electric vehicles, and high-capacity power batteries can be used in large electric vehicles such as hybrid or electric vehicles.
  • the power batteries are grouped to form a battery module. A plurality of battery modules are packaged in a cabinet.
  • the bottom of the sheet metal case in the prior art is flat and has poor strength. After the box is welded and welded, the beam has a great influence on the flatness, and it is difficult to ensure the flatness of the bottom of the box. At present, the flatness and strength of the box under the sheet metal box are poor.
  • the bottom of the cabinet needs to be coated with glue to bond the battery module. Due to the poor flatness of the bottom of the box, it is easy to cause uneven thickness of the rubber layer. At the same time, the excess glue is also squeezed by the bottom of the battery module and overflows around. Excess glue will bond the wire harness or electrical parts, which will cause difficulties in subsequent installation procedures and maintenance.
  • the embodiment of the present application provides a battery case and a battery case.
  • the bottom plate of the battery case itself has good rigidity, is not susceptible to warping deformation, and can prevent the overflowing structural glue from contaminating the wire harness or the electrical component.
  • the embodiment of the present application provides a battery case including: a bottom plate and a side plate connected to the bottom plate, the bottom plate and the side plate enclosing a receiving portion for accommodating the unit battery; the bottom plate is provided with an opening a plurality of first grooves facing the receiving portion and a plurality of second grooves, the plurality of first grooves being spaced apart from each other, the plurality of second grooves being spaced apart from each other, and the first groove and the second groove intersecting each other Settings.
  • the first groove extends in the length direction of the bottom plate, and the plurality of first grooves are disposed in parallel, the second groove extends in the width direction of the bottom plate, and the plurality of second grooves Parallel settings.
  • the first groove and the second groove are perpendicular to each other.
  • the surface of the bottom plate facing away from the receiving portion is further provided with a first convex portion corresponding to the first groove and a second convex portion corresponding to the second groove.
  • the battery case further includes a plurality of reinforcing beams, and the plurality of reinforcing beams are spaced apart along a length direction or a width direction of the bottom plate.
  • the battery case further includes a strip plate disposed at a junction of the long side of the bottom plate and the side plate, the strip plate including the opposite first long side and the second long side, The first long side is fixedly connected to the side plate, and the second long side is fixedly connected to the long side of the bottom plate.
  • a surface of the second long side facing away from the bottom plate is lower than a surface of the bottom plate facing the receiving portion, and the strip plate further includes a plurality of first adhesive grooves disposed on the second long side. A plurality of first adhesive grooves are spaced apart along the length of the bottom plate.
  • the battery case further includes a support beam disposed on the surface of the bottom plate facing the receiving portion, the support beam including the first connecting section, the intermediate supporting section and the second connecting section, which are successively distributed, the first connecting section It is fixedly connected with the wide side of the side plate or the bottom plate, and the second connecting portion is fixedly connected with the wide side of the bottom plate, and the intermediate supporting portion is used for mounting the single battery.
  • the intermediate support section protrudes away from the bottom plate, has a top surface parallel to the bottom surface toward the surface of the accommodating portion, and a fixing hole provided on the top surface and used for fixing the unit cells.
  • the surface of the second connecting portion facing away from the bottom plate is lower than the surface of the bottom plate facing the receiving portion
  • the supporting beam further includes a plurality of second adhesive grooves disposed on the second connecting portion, the plurality of The second adhesive grooves are spaced apart along the width direction of the bottom plate.
  • the first groove and the second groove are disposed on the bottom plate.
  • the strength and rigidity of the bottom plate can be improved, thereby avoiding the warping deformation of the bottom plate, ensuring that the bottom plate maintains a good flatness, and further ensuring that the tops of the plurality of single cells mounted and fixed on the bottom plate are flush, which is advantageous for the phase.
  • the two adjacent cells are connected to the bus bar welding operation.
  • the first groove and the second groove can be used to collect excess structural glue extruded by the unit cells, to prevent structural glue from overflowing and contaminating the wire harness or other electrical components, or to cause the wire harness or other electrical components to interact with each other. Bonding for subsequent repair or replacement of wiring harnesses or electrical components.
  • the embodiment of the present application provides a battery case, comprising: the battery case body as described above; a plurality of battery assembly bodies disposed on the receiving portion and supported by the bottom plate, and the plurality of battery assemblies are along the width direction of the bottom plate Side by side, each battery assembly includes a plurality of unit cells arranged side by side along the length of the bottom plate.
  • FIG. 1 is a schematic view showing the overall structure of a battery case according to an embodiment of the present application.
  • FIG. 2 is a schematic rear view showing the structure of a battery case according to an embodiment of the present application.
  • FIG. 3 is a schematic front structural view of a battery case according to an embodiment of the present application.
  • FIG. 4 is a schematic cross-sectional view of a battery case according to an embodiment of the present invention.
  • Figure 5 is a partial enlarged view of A in Figure 4.
  • FIG. 6 is a schematic cross-sectional view of the battery case body in the width direction according to an embodiment of the present application.
  • FIG. 7 is a schematic view showing a connection structure of a strip plate and a support beam according to an embodiment of the present application.
  • a bottom plate 11, a first groove; 12, a second groove; 13, a first convex portion; 14, a second convex portion;
  • Support beam 61, first connecting section; 62, intermediate supporting section; 62a, fixing hole; 63, second connecting section; 64, second adhesive groove;
  • X length direction
  • Y width direction
  • Fig. 1 schematically shows the overall structure of a battery case of the present embodiment.
  • Fig. 2 schematically shows the back structure of the battery case of the present embodiment.
  • Fig. 3 schematically shows the front structure of the battery case of the present embodiment.
  • Fig. 4 is a view schematically showing the longitudinal direction of the battery case of the present embodiment.
  • Fig. 5 schematically shows a partially enlarged structure at A in Fig. 4.
  • Fig. 6 is a view schematically showing the structure of the battery case of the present embodiment taken along the width direction.
  • Fig. 7 schematically shows the strip-shaped plate and the support beam connection structure of the present embodiment.
  • the battery case of the present application is for accommodating a single battery (not shown) to form a protection for the unit cells. It can also be housed in a wire harness or other electronic components related to the use of a single battery and protected.
  • the unit cell of this embodiment may be a prismatic battery.
  • the battery case of the present embodiment includes a bottom plate 1 and a side plate 2 connected to the bottom plate 1.
  • the bottom plate 1 and the side plate 2 are enclosed to form a housing portion 3 for accommodating the unit cells.
  • the unit cell is placed in the battery case through the opening of the housing 3.
  • the bottom plate 1 is provided with a plurality of first grooves 11 opening toward the accommodating portion 3 and a plurality of second grooves 12.
  • the plurality of first grooves 11 are spaced apart from each other.
  • the plurality of second grooves 12 are spaced apart from each other.
  • the first groove 11 and the second groove 12 are disposed to cross each other to form a lattice-like structure.
  • an area for supporting the unit cells is divided between the adjacent two first grooves 11 and the adjacent two second grooves 12.
  • the bottom of the unit cell is seated in this area.
  • the first groove 11 and the second groove 12 intersecting each other are disposed on the bottom plate 1 to improve the rigidity of the bottom plate 1 so that the bottom plate 1 is not easily warped by its internal stress, thereby ensuring that the bottom plate 1 faces the receiving portion 3.
  • the flatness of the surface In this way, when all the single cells are installed in the battery case, the top heights of all the single cells are kept flush, avoiding the unevenness, which is beneficial to the subsequent process of stabilizing the welding confluence on the output electrodes of the adjacent two single cells. Row and ensure the welding stability of the bus bar and the output electrode during subsequent use.
  • a region for supporting the unit cells is divided between the adjacent two first grooves 11 and the adjacent two second grooves 12.
  • a predetermined amount of structural adhesive needs to be applied to the area prior to mounting the unit cells. Since the bottom plate 1 has a good flatness, it is possible to ensure uniform thickness of the structural adhesive coated on the bottom plate 1.
  • the structural glue is squeezed by the unit cells to flow around. The structural adhesive squeezed by the single cell can flow to the first groove 11 and the second groove 12, and is collected and collected by the first groove 11 and the second groove 12 to prevent excess structural glue from overflowing and contaminating the wire bundle. Or other electrical components, or cause the wire harness or other electrical components to bond to each other for subsequent repair or replacement.
  • the bottom plate 1 of the present embodiment has a predetermined length and width.
  • the first groove 11 extends in the length direction X of the bottom plate 1, and a plurality of first grooves 11 are arranged in parallel.
  • the second groove 12 extends in the width direction Y of the bottom plate 1, and the plurality of second grooves 12 are disposed in parallel.
  • the first groove 11 and the second groove 12 make the area divided by the bottom plate 1 more regular and orderly, further increasing the rigidity of the bottom plate 1 itself.
  • the plurality of first grooves 11 are equidistantly disposed in parallel.
  • the plurality of second grooves 12 are equidistantly disposed in parallel.
  • the plurality of first grooves 11 and the plurality of second grooves 12 define a plurality of regions for supporting the unit cells. The area of each area is the same, so that the bottom plate 1 is uniformly stressed and the deformation resistance is improved.
  • first groove 11 and the second groove 12 are perpendicular to each other.
  • the area defined by the adjacent two first grooves 11 and the adjacent two second grooves 12 is rectangular.
  • the first groove 11 is perpendicular to the wide side of the bottom plate 1, and warpage of the wide side of the bottom plate 1 can be prevented.
  • the second groove 12 is perpendicular to the long side of the bottom plate 1, and can prevent the long side of the bottom plate 1 from being warped and deformed.
  • the first groove 11 and the second groove 12 which are perpendicular to each other are easy to manufacture.
  • the surface of the bottom plate 1 of the present embodiment facing away from the accommodating portion 3 is further provided with a first convex portion 13 corresponding to the first groove 11 and a second corresponding to the second groove 12.
  • the convex portion 14 can further increase the rigidity and strength of the bottom plate 1 and withstand greater stress without deformation.
  • the bottom plate 1 can be manufactured by stamping or molding to manufacture the first groove 11 and the second groove 12, or to simultaneously manufacture the first groove 11 and the first protrusion 13 and the second groove 12 and Two convex portions 14.
  • the first groove 11 and the second groove 12 have the same cross-sectional shape, and each has a circular arc shape or a U shape.
  • the cross-sectional shape of the first convex portion 13 is the same as the cross-sectional shape of the first groove 11, and the cross-sectional shape of the second convex portion 14 is the same as the cross-sectional shape of the second groove 12.
  • the battery case of this embodiment further includes a plurality of reinforcing beams 4.
  • the plurality of reinforcing beams 4 are spaced apart along the longitudinal direction X or the width direction Y of the bottom plate 1.
  • the reinforcing beam 4 is simultaneously connected to the bottom plate 1 and the side plate 2.
  • the plurality of reinforcing beams 4 can reinforce the bottom plate 1 and the side plates 2 from the outside of the battery case body, thereby improving the rigidity and strength of the entire battery case body, thereby improving the overall impact resistance of the battery case body, so that the bottom plate 1 and the side plate 2 It is not easily deformed by external force, ensuring the positional stability of the unit cells accommodated inside and the stability of connection between them, and improving the safety of the use process.
  • the reinforcing beam 4 may be welded to the bottom plate 1 and the side plate 2, or may be fixed by a fastener connection.
  • the battery case of the present embodiment further includes a strip plate 5.
  • the strip plate 5 is provided at the junction of the long side of the bottom plate 1 and the side plates 2.
  • a strip plate 5 is disposed between the opposite long sides of the bottom plate 1 and the side plates 2, respectively.
  • the strip plate 5 extends along the length direction X of the bottom plate 1.
  • the strip plate 5 includes opposing first long sides 51 and second long sides 52.
  • the first long side 51 is fixedly connected to the side plate 2.
  • the second long side 52 is fixedly connected to the long side of the bottom plate 1.
  • the strip plate 5 can further improve the overall rigidity and strength of the battery case.
  • the strip plate 5 has an L-shaped cross section.
  • the first long side 51 is welded to the side plate 2, and the second long side 52 is welded to the bottom plate 1.
  • the surface of the second long side 52 of the embodiment facing away from the bottom plate 1 is lower than the surface of the bottom plate 1 facing the receiving portion 3, so that the bottom of the single cell is prevented from being seated on the surface of the second long side 52 facing away from the bottom plate 1, and the bottom plate A gap occurs between the surfaces of the accommodating portion 3, resulting in deterioration of the stability of the unit cell.
  • the strip plate 5 further includes a plurality of first adhesive grooves 53 disposed on the second long side 52. A plurality of first adhesive grooves 53 are spaced apart along the length direction X of the bottom plate 1.
  • the structural adhesive extruded from the cell adjacent to the side plate 2 in the width direction Y of the bottom plate 1 flows into the first adhesive groove 53, thereby avoiding the structure.
  • the glue flows in a direction that causes the wire harness or electrical components to bond.
  • the shape of the first adhesive groove 53 is V-shaped or U-shaped.
  • the battery case of the present embodiment further includes a support beam 6.
  • the support beam 6 is disposed on the surface of the bottom plate 1 facing the accommodating portion 3.
  • the bottom plate 1 includes two opposite wide sides.
  • a support beam 6 is respectively disposed on the two wide sides of the bottom plate 1.
  • the support beam 6 extends in the width direction Y of the bottom plate 1.
  • the support beam 6 includes a first connecting section 61, an intermediate supporting section 62 and a second connecting section 63 which are successively distributed along the longitudinal direction X of the bottom plate 1.
  • the first connecting section 61 is fixedly connected to the wide side of the side panel 2 or the bottom panel 1.
  • the second connecting section 63 is fixedly connected to the wide side of the bottom plate 1.
  • the intermediate support section 62 is used to mount a fixed unit cell.
  • the intermediate support section 62 projects away from the bottom plate 1.
  • the intermediate support section 62 has a top surface parallel to the surface of the bottom plate 1 facing the accommodating portion 3, and a fixing hole 62a provided on the top surface for fixing the unit cells.
  • the top surface of the intermediate support section 62 is higher than the surface of the bottom plate 1 facing the accommodating portion 3.
  • the unit cells are disposed between the two support beams 6, and are self-mounted and fixed by the connecting members that are simultaneously connected to the two support beams 6.
  • the fixing hole 62a is a threaded hole.
  • the connecting member includes a screw threadedly coupled to the fixing hole 62a.
  • the surface of the second connecting section 63 facing away from the bottom plate 1 is lower than the surface of the bottom plate 1 facing the receiving portion 3, preventing the second connecting section 63 from interfering with the unit cell mounting and fixing process.
  • the top surface of the intermediate support section 62 is higher than the surface of the second connecting section 63 facing away from the bottom plate 1.
  • the support beam 6 further includes a plurality of second adhesive grooves 64 disposed on the second connecting portion 63.
  • a plurality of second adhesive grooves 64 are spaced apart along the width direction Y of the bottom plate 1.
  • the first groove 11 and the second groove 12 are disposed on the bottom plate 1.
  • the strength and rigidity of the bottom plate 1 can be improved, thereby preventing the warping deformation of the bottom plate 1 and ensuring that the bottom plate 1 maintains a good flatness, and further ensuring that the tops of the plurality of single cells mounted and fixed on the bottom plate 1 are flush. It is beneficial to perform bus bar welding operation on two adjacent single cells.
  • the first recess 11 and the second recess 12 can be used to collect excess structural adhesive extruded by the unit cells, to prevent structural glue from overflowing and contaminating the wire harness or other electrical components, or to cause wiring harnesses or other electrical components. The components are bonded to each other for subsequent repair or replacement of wiring harnesses or electrical components.
  • the embodiment of the present application further provides a battery case comprising the battery case of the above embodiment and a plurality of battery assemblies disposed in the battery case.
  • a plurality of battery assemblies are arranged side by side along the width direction Y of the bottom plate 1.
  • Each of the battery assemblies includes a plurality of unit cells arranged side by side along the length direction X of the bottom plate 1.
  • the unit cells are bonded to the bottom plate 1 of the battery case by a structural adhesive. Since the flatness of the bottom plate 1 of the battery case is good, the top of each of the plurality of single cells does not appear uneven. The overall rigidity of the battery case is good, and the impact resistance is strong, thereby effectively protecting the single battery.

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Battery Mounting, Suspending (AREA)

Abstract

本申请涉及一种电池箱体以及电池箱。电池箱体包括：底板以及与底板相连接的侧板，底板和侧板围合形成用于容纳单体电池的容纳部；底板上设置有开口朝向容纳部的多个第一凹槽以及多个第二凹槽，多个第一凹槽相互间隔设置，多个第二凹槽相互间隔设置，且第一凹槽和第二凹槽相互交叉设置。电池箱体的底板自身刚度好，不易发生翘曲变形，且能够阻止溢出的结构胶污染线束或电气元件。

Description

电池箱体以及电池箱
相关申请的交叉引用
本申请要求享有于2018年03月30日提交的名称为“电池箱体以及电池箱”的中国专利申请201820447239.7的优先权，该申请的全部内容通过引用并入本文中。
技术领域
本申请涉及电池技术领域，特别是涉及一种电池箱体以及电池箱。
背景技术
随着技术的发展，动力电池应用范围越来越广，涉及生产或生活。动力电池也称二次电池，为可再充电电池。动力电池被广泛地使用。低容量的动力电池可用于小型电动车辆，高容量的动力电池可用于大型电动车辆，例如混合动力汽车或电动汽车。动力电池成组使用时，需要使用汇流排将每个动力电池串联或并联。动力电池成组形成电池模组。多个电池模组通过箱体封装起来。
现有技术中的钣金箱体的底部为平面，自身强度差。箱体拼焊以及焊接加强梁后对于平面度影响较大，难以保证箱体底部平面度。目前钣金电箱下箱体平面度以及强度较差。在装配电池模组时易造成动力电池高低不平，不利于后续工序焊接动力电池之间的汇流排，容易出现虚焊。在安装电池模组时，箱体底部需要涂覆胶水，以粘接固定电池模组。由于箱体底部的平面度较差，容易导致胶层薄厚不均。同时多余的胶水也会被电池模组的底部挤压而向四周溢出。多余的胶水将粘接线束或电气件等，对后续安装工序及维修的造成困难。
发明内容
本申请实施例提供一种电池箱体以及电池箱。电池箱体的底板自身刚度好，不易发生翘曲变形，且能够阻止溢出的结构胶污染线束或电气元件。
一方面，本申请实施例提出了一种电池箱体，其包括：底板以及与底板相连接的侧板，底板和侧板围合形成用于容纳单体电池的容纳部；底板上设置有开口朝向容纳部的多个第一凹槽以及多个第二凹槽，多个第一凹槽相互间隔设置，多个第二凹槽相互间隔设置，且第一凹槽和第二凹槽相互交叉设置。
根据本申请实施例的一个方面，第一凹槽在底板的长度方向上延伸、且多个第一凹槽平行设置，第二凹槽在底板的宽度方向上延伸、且多个第二凹槽平行设置。
根据本申请实施例的一个方面，第一凹槽与第二凹槽相互垂直。
根据本申请实施例的一个方面，底板背向容纳部的表面进一步设置有与第一凹槽相对应的第一凸部以及与第二凹槽相对应的第二凸部。
根据本申请实施例的一个方面，电池箱体还包括多个加强梁，多个加强梁沿底板的长度方向或宽度方向间隔设置。
根据本申请实施例的一个方面，电池箱体还包括条形板，条形板设置于底板的长边和侧板的连接处，条形板包括相对的第一长边和第二长边，第一长边与侧板连接固定，第二长边与底板的长边连接固定。
根据本申请实施例的一个方面，的第二长边背向底板的表面低于底板朝向容纳部的表面，条形板还包括设置于第二长边上的多个第一容胶凹槽，多个第一容胶凹槽沿底板的长度方向间隔设置。
根据本申请实施例的一个方面，电池箱体还包括支撑梁，设置于底板朝向容纳部的表面，支撑梁包括相继分布的第一连接段、中间支撑段以及第二连接段，第一连接段与侧板或底板的宽边连接固定，第二连接段与底板的宽边连接固定，中间支撑段用于安装单体电池。
根据本申请实施例的一个方面，中间支撑段背向底板凸出，具有与底板朝向容纳部的表面相平行的顶面以及设置于顶面、并用于固定单体电池的固定孔。
根据本申请实施例的一个方面，第二连接段背向底板的表面低于底板朝向容纳部的表面，支撑梁还包括设置于第二连接段上的多个第二容胶凹槽，多个第二容胶凹槽沿底板的宽度方向间隔设置。
根据本申请实施例提供的电池箱体，在底板上设置第一凹槽和第二凹槽。一方面可以提高底板的强度和刚度，从而避免底板发生翘曲变形，保证底板保持良好的平面度，进一步能够保证安装固定于底板上的多个单体电池的顶部相齐平，有利于对相邻两个单体电池进行汇流排焊接操作。另一方面，第一凹槽和第二凹槽能够用于收集被单体电池挤压出的多余的结构胶，避免结构胶溢出而污染线束或其他电气元件，或导致线束或其他电气元件相互粘接，便于后续维修或更换线束或电气元件。
另一个方面，本申请实施例提供一种电池箱，其包括：如上述的电池箱体；多个电池组合体，设置于容纳部并被底板承托，多个电池组合体沿底板的宽度方向并排设置，每个电池组合体包括多个沿底板的长度方向并排设置的单体电池。
附图说明
下面将通过参考附图来描述本申请示例性实施例的特征、优点和技术效果。
图1是本申请一实施例的电池箱体的整体结构示意图；
图2是本申请一实施例的电池箱体的背面结构示意图；
图3是本申请一实施例的电池箱体的正面结构示意图；
图4是本申请一实施例的电池箱体的沿长度方向剖切结构示意图；
图5是图4中A处局部放大图；
图6是本申请一实施例的电池箱体的沿宽度方向剖切结构示意图；
图7是本申请一实施例的条形板和支撑梁连接结构示意图。
在附图中，附图并未按照实际的比例绘制。
标记说明：
1、底板；11、第一凹槽；12、第二凹槽；13、第一凸部；14、第二 凸部；
2、侧板；
3、容纳部；
4、加强梁；
5、条形板；51、第一长边；52、第二长边；53、第一容胶凹槽；
6、支撑梁；61、第一连接段；62、中间支撑段；62a、固定孔；63、第二连接段；64、第二容胶凹槽；
X、长度方向；Y、宽度方向。
具体实施方式
下面结合附图和实施例对本申请的实施方式作进一步详细描述。以下实施例的详细描述和附图用于示例性地说明本申请的原理，但不能用来限制本申请的范围，即本申请不限于所描述的实施例。
在本申请的描述中，需要说明的是，除非另有说明，“多个”的含义是两个或两个以上；术语“上”、“下”、“左”、“右”、“内”、“外”等指示的方位或位置关系仅是为了便于描述本申请和简化描述，而不是指示或暗示所指的装置或元件必须具有特定的方位、以特定的方位构造和操作，因此不能理解为对本申请的限制。此外，术语“第一”、“第二”等仅用于描述目的，而不能理解为指示或暗示相对重要性。
在本申请的描述中，还需要说明的是，除非另有明确的规定和限定，术语“安装”、“相连”、“连接”应做广义理解，例如，可以是固定连接，也可以是可拆卸连接，或一体地连接；可以是直接相连，也可以通过中间媒介间接相连。对于本领域的普通技术人员而言，可视具体情况理解上述术语在本申请中的具体含义。
为了更好地理解本申请，下面结合图1至图7对本申请实施例的电池箱体进行详细描述。
图1示意性地显示了本实施例的电池箱体的整体结构。图2示意性地显示了本实施例的电池箱体的背面结构。图3示意性地显示了本实施例的电池箱体的正面结构。图4示意性地显示了本实施例的电池箱体的沿长度 方向剖切结构。图5示意性地显示了图4中A处局部放大结构。图6示意性地显示了本实施例的电池箱体的沿宽度方向剖切结构。图7示意性地显示了本实施例的条形板和支撑梁连接结构。
本申请的电池箱体用于容纳单体电池(图中未示出)，以对单体电池形成保护。同时也可以容纳于单体电池使用相关的线束或其他电子元器件，并对其进行保护。本实施例的单体电池可以是方形电池。
结合图1至图3所示，本实施例的电池箱体包括底板1以及与底板1相连接的侧板2。底板1和侧板2围合形成容纳单体电池的容纳部3。单体电池通过容纳部3的开口放入电池箱体。底板1上设置有开口朝向容纳部3的多个第一凹槽11以及多个第二凹槽12。多个第一凹槽11相互间隔设置。多个第二凹槽12相互间隔设置。第一凹槽11和第二凹槽12相互交叉设置，以形成栅格状结构。
一方面，相邻两个第一凹槽11和相邻两个第二凹槽12之间划分出用于支撑单体电池的区域。单体电池的底部座接于该区域。底板1上设置相互交叉的第一凹槽11和第二凹槽12，能够提高底板1的自身刚度，使得底板1不易因自身内部应力而发生翘曲变形，从而保证底板1朝向容纳部3的表面的平面度。这样，所有单体电池安装于电池箱体内时，所有单体电池的顶部高度保持相齐平，避免出现高低不平情况，有利于后续工序在相邻两个单体电池的输出电极上稳定焊接汇流排，并保证后续使用过程中汇流排与输出电极的焊接稳定性。
另一方面，相邻两个第一凹槽11和相邻两个第二凹槽12之间划分出用于支撑单体电池的区域。在安装单体电池之前，需要在该区域涂覆预定量的结构胶。由于底板1具有良好的平面度，因此可以保证底板1上涂覆的结构胶的厚度均匀一致。另外，在单体电池安装过程中，结构胶受到单体电池的挤压而向四周流动。被单体电池挤压溢出的结构胶能够流动至第一凹槽11和第二凹槽12，并被第一凹槽11和第二凹槽12容纳收集，避免多余的结构胶溢出而污染线束或其他电气元件，或导致线束或其他电气元件相互粘接，便于后续维修或更换。
本实施例的底板1具有预定长度和宽度。第一凹槽11在底板1的长 度方向X上延伸、且多个第一凹槽11平行设置。第二凹槽12在底板1的宽度方向Y上延伸、且多个第二凹槽12平行设置。这样，第一凹槽11和第二凹槽12将底板1划分的区域更加规整有序，进一步提高底板1的自身刚度。可选地，多个第一凹槽11等间距平行设置。多个第二凹槽12等间距平行设置。多个第一凹槽11和多个第二凹槽12划分出多个用于支撑单体电池的区域。各个区域的面积相同，使得底板1整体受力均衡，提高抗变形能力。
在一个实施例中，第一凹槽11和第二凹槽12相互垂直。相邻两个第一凹槽11和相邻两个第二凹槽12划分出的区域呈矩形。第一凹槽11与底板1的宽边相垂直，能够防止底板1的宽边发生翘曲变形。第二凹槽12与底板1的长边相垂直，能够防止底板1的长边发生翘曲变形。相互垂直的第一凹槽11和第二凹槽12易于加工制造。
结合图2和图4所示，本实施例的底板1背向容纳部3的表面进一步设置有与第一凹槽11相对应的第一凸部13以及第二凹槽12相对应的第二凸部14。第一凸部13和第二凸部14能够进一步提高底板1的自身刚度和强度，承受更大的应力而不发生变形。在一个示例中，底板1能够通过冲压或模压的方式制造第一凹槽11和第二凹槽12，或者，同时制造第一凹槽11和第一凸部13以及第二凹槽12和第二凸部14。可选地，第一凹槽11和第二凹槽12的横截面形状相同，均为圆弧形或U形。第一凸部13的横截面形状与第一凹槽11的横截面形状相同，第二凸部14的横截面形状与第二凹槽12的横截面形状相同。
本实施例的电池箱体还包括多个加强梁4。多个加强梁4沿底板1的长度方向X或宽度方向Y间隔设置。加强梁4同时与底板1和侧板2相连接。多个加强梁4能够从电池箱体的外部对底板1以及侧板2进行加固，提高电池箱体整体的刚度和强度，从而提高电池箱体的整体抗冲击能力，使得底板1和侧板2不易受到外力作用而发生变形，保证内部容纳的单体电池的位置稳定性以及彼此之间的连接稳定性，提升使用过程安全性。可选地，加强梁4可以与底板1和侧板2焊接连接，也可以通过紧固件连接固定。
结合图6和图7所示，本实施例的电池箱体还包括条形板5。条形板5设置于底板1的长边和侧板2的连接处。底板1相对的两个长边与侧板2之间分别设置有一个条形板5。条形板5沿底板1的长度方向X延伸。条形板5包括相对的第一长边51和第二长边52。第一长边51与侧板2连接固定。第二长边52与底板1的长边连接固定。条形板5能够进一步提高电池箱体的整体刚度和强度。可选地，条形板5的横截面形状为L形。第一长边51与侧板2焊接连接，第二长边52与底板1焊接连接。
本实施例的第二长边52背向底板1的表面低于底板1朝向容纳部3的表面，避免单体电池的底部座接于第二长边52背向底板1的表面，而与底板1朝向容纳部3的表面之间出现间隙，导致单体电池稳定性变差。条形板5还包括设置于第二长边52上的多个第一容胶凹槽53。多个第一容胶凹槽53沿底板1的长度方向X间隔设置。在底板1上安装单体电池时，被在底板1的宽度方向Y上，与侧板2相邻的单体电池挤出的结构胶会流动至第一容胶凹槽53内，从而避免结构胶无方向流动而导致线束或电气元件发生粘接。可选地，第一容胶凹槽53的形状呈V形或U形。
结合图5和图7所示，本实施例的电池箱体还包括支撑梁6。支撑梁6设置于底板1朝向容纳部3的表面。底板1包括相对的两个宽边。底板1的两个宽边上分别设置有一个支撑梁6。支撑梁6沿底板1的宽度方向Y延伸。支撑梁6包括沿底板1的长度方向X相继分布的第一连接段61、中间支撑段62以及第二连接段63。第一连接段61与侧板2或者底板1的宽边连接固定。第二连接段63与底板1的宽边连接固定。中间支撑段62用于安装固定单体电池。
在一个实施例中，中间支撑段62背向底板1凸出。中间支撑段62具有与底板1朝向容纳部3的表面相平行的顶面以及设置于顶面、并用于固定单体电池的固定孔62a。中间支撑段62的顶面高于底板1朝向容纳部3的表面。单体电池设置于两个支撑梁6之间，通过同时连接于两个支撑梁6的连接部件实现自身的安装固定。可选地，固定孔62a是螺纹孔。连接部件包括与固定孔62a螺纹连接的螺杆。
在一个实施例中，第二连接段63背向底板1的表面低于底板1朝向 容纳部3的表面，避免第二连接段63对单体电池安装固定过程形成干涉。中间支撑段62的顶面高于第二连接段63背向底板1的表面。支撑梁6还包括设置于第二连接段63上的多个第二容胶凹槽64。多个第二容胶凹槽64沿底板1的宽度方向Y间隔设置。在底板1上安装单体电池时，被在底板1的长度方向X上，与侧板2相邻的单体电池挤出的结构胶会流动至第二容胶凹槽64内，从而避免结构胶无方向流动而导致线束或电气元件发生粘接。可选地，第二容胶凹槽64的形状呈V形或U形。
本申请实施例的电池箱体，在底板1上设置第一凹槽11和第二凹槽12。一方面可以提高底板1的强度和刚度，从而避免底板1发生翘曲变形，保证底板1保持良好的平面度，进一步能够保证安装固定于底板1上的多个单体电池的顶部相齐平，有利于对相邻两个单体电池进行汇流排焊接操作。另一方面，第一凹槽11和第二凹槽12能够用于收集被单体电池挤压出的多余的结构胶，避免结构胶溢出而污染线束或其他电气元件，或导致线束或其他电气元件相互粘接，便于后续维修或更换线束或电气元件。
本申请实施例还提出一种电池箱，包括上述实施例的电池箱体以及设置于电池箱体内的多个电池组合体。多个电池组合体沿底板1的宽度方向Y并排设置。每个电池组合体包括多个沿底板1的长度方向X并排设置的单体电池。单体电池通过结构胶粘接于电池箱体的底板1上。由于电池箱体的底板1的平面度好，从而多个单体电池中各个单体电池的顶部不会出现高低不平的现象。电池箱体整体刚度好，抗冲击能力强，从而有效保护单体电池。
虽然已经参考优选实施例对本申请进行了描述，但在不脱离本申请的范围的情况下，可以对其进行各种改进并且可以用等效物替换其中的部件。尤其是，只要不存在结构冲突，各个实施例中所提到的各项技术特征均可以任意方式组合起来。本申请并不局限于文中公开的特定实施例，而是包括落入权利要求的范围内的所有技术方案。

Claims (10)

  1. 一种电池箱体，其中，包括：
    底板以及与所述底板相连接的侧板，所述底板和所述侧板围合形成用于容纳单体电池的容纳部；
    所述底板上设置有开口朝向所述容纳部的多个第一凹槽以及多个第二凹槽，多个所述第一凹槽相互间隔设置，多个所述第二凹槽相互间隔设置，且所述第一凹槽和所述第二凹槽相互交叉设置。
  2. 根据权利要求1所述的电池箱体，其中，所述第一凹槽在所述底板的长度方向上延伸、且多个所述第一凹槽平行设置，所述第二凹槽在所述底板的宽度方向上延伸、且多个所述第二凹槽平行设置。
  3. 根据权利要求2所述的电池箱体，其中，所述第一凹槽与所述第二凹槽相互垂直。
  4. 根据权利要求1所述的电池箱体，其中，所述底板背向所述容纳部的表面进一步设置有与所述第一凹槽相对应的第一凸部以及与所述第二凹槽相对应的第二凸部。
  5. 根据权利要求1所述的电池箱体，其中，所述电池箱体还包括条形板，所述条形板设置于所述底板的长边和所述侧板的连接处，所述条形板包括相对的第一长边和第二长边，所述第一长边与所述侧板连接固定，所述第二长边与所述底板的所述长边连接固定。
  6. 根据权利要求5所述的电池箱体，其中，所述第二长边背向所述底板的表面低于所述底板朝向所述容纳部的表面，所述条形板还包括设置于所述第二长边上的多个第一容胶凹槽，多个所述第一容胶凹槽沿所述底板的长度方向间隔设置。
  7. 根据权利要求1至6任一项所述的电池箱体，其中，所述电池箱体还包括支撑梁，设置于所述底板朝向所述容纳部的表面，所述支撑梁包括相继分布的第一连接段、中间支撑段以及第二连接段，所述第一连接段与所述侧板或所述底板的宽边连接固定，所述第二连接段与所述底板的所述宽边连接固定，所述中间支撑段用于安装所述单体电池。
  8. 根据权利要求7所述的电池箱体，其中，所述中间支撑段背向所述底板凸出，所述中间支撑段具有与所述底板朝向所述容纳部的表面相平行的顶面以及设置于所述顶面、并用于固定所述单体电池的固定孔。
  9. 根据权利要求7所述的电池箱体，其中，所述第二连接段背向所述底板的表面低于所述底板朝向所述容纳部的表面，所述支撑梁还包括设置于所述第二连接段上的多个第二容胶凹槽，多个所述第二容胶凹槽沿所述底板的宽度方向间隔设置。
  10. 一种电池箱，其中，包括：
    如权利要求1至9任一项所述的电池箱体；
    多个电池组合体，设置于所述容纳部并被所述底板承托，多个所述电池组合体沿所述底板的宽度方向并排设置，每个所述电池组合体包括多个沿所述底板的长度方向并排设置的所述单体电池。
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