WO2020108209A1 - 电池托盘和车辆 - Google Patents

电池托盘和车辆 Download PDF

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Publication number
WO2020108209A1
WO2020108209A1 PCT/CN2019/114038 CN2019114038W WO2020108209A1 WO 2020108209 A1 WO2020108209 A1 WO 2020108209A1 CN 2019114038 W CN2019114038 W CN 2019114038W WO 2020108209 A1 WO2020108209 A1 WO 2020108209A1
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WO
WIPO (PCT)
Prior art keywords
reinforcing
battery tray
bottom plate
block
frame structure
Prior art date
Application number
PCT/CN2019/114038
Other languages
English (en)
French (fr)
Inventor
储焰南
季进清
钱木
林久标
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 EP19888957.8A priority Critical patent/EP3795399B1/en
Publication of WO2020108209A1 publication Critical patent/WO2020108209A1/zh
Priority to US17/133,594 priority patent/US11148520B2/en
Priority to US17/462,727 priority patent/US11548365B2/en
Priority to US17/462,827 priority patent/US11554654B2/en

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Classifications

    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K1/00—Arrangement or mounting of electrical propulsion units
    • B60K1/04—Arrangement or mounting of electrical propulsion units of the electric storage means for propulsion
    • 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
    • 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
    • H01M50/218—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
    • H01M50/222—Inorganic material
    • H01M50/224—Metals
    • 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
    • H01M50/233—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by physical properties of casings or racks, e.g. dimensions
    • H01M50/236—Hardness
    • 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
    • H01M50/244—Secondary casings; Racks; Suspension devices; Carrying devices; Holders characterised by their mounting method
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K1/00—Arrangement or mounting of electrical propulsion units
    • B60K1/04—Arrangement or mounting of electrical propulsion units of the electric storage means for propulsion
    • B60K2001/0405—Arrangement or mounting of electrical propulsion units of the electric storage means for propulsion characterised by their position
    • B60K2001/0433—Arrangement under the rear seats
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K1/00—Arrangement or mounting of electrical propulsion units
    • B60K1/04—Arrangement or mounting of electrical propulsion units of the electric storage means for propulsion
    • B60K2001/0405—Arrangement or mounting of electrical propulsion units of the electric storage means for propulsion characterised by their position
    • B60K2001/0438—Arrangement under the floor
    • 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

  • This application relates to the field of electric vehicles, in particular to a battery tray and a vehicle.
  • a battery tray In electric vehicle technology, a battery tray is used to install and house a battery module.
  • the battery tray usually includes a frame structure and a reinforcement structure.
  • the usual method is to increase the thickness of the frame structure of the battery tray and the reinforcement structure, resulting in an increase in weight, but the weight increase makes the strength and weight reduction become mutually restrictive factors, it is difficult to increase the battery tray At the same time, the intensity is reduced.
  • the purpose of the present application is to provide a battery tray and a vehicle that can increase the strength of the battery tray and reduce the overall weight.
  • the present application provides a battery tray, which includes: a frame structure including a plurality of frames connected end to end and arranged to be connected to a vehicle; a bottom plate structure including a bottom plate and a reinforcing beam The bottom plate is located on the inner side of the reinforcing beam and is arranged to install the battery module.
  • the inner bottom plate and the reinforcing beam are fixed inside the frame structure;
  • the battery tray also includes a reinforcing block, the first end of the reinforcing block is cooperatively connected with the corresponding frame, and the first The two ends are cooperatively connected with the reinforcing beam, so that the reinforcing beam is fixedly connected to the frame structure through the reinforcing block.
  • the first end of the reinforcing block is connected with the corresponding concave-convex frame.
  • the first end of the reinforcing block is provided with a first stepped portion
  • the first stepped portion is formed with a first groove
  • the corresponding frame is provided with a first protrusion that cooperates with the first groove
  • the second end of the reinforcing block is connected with the end of the reinforcing beam in a concave-convex manner.
  • the second end of the reinforcing block is provided with a second upper step portion
  • the second upper step portion is formed with a second upper groove
  • the end portion of the reinforcing beam is provided with a The second upper protrusion.
  • the second end of the reinforcing block is further provided with a second lower step portion, the second lower step portion is formed with a second lower groove, and the end portion of the reinforcing beam is provided with a Second protrusion.
  • the top surface of the reinforcement block is flush with the top surface of the reinforcement beam provided with the second upper protrusion, and the top surface of the reinforcement block is flush with the top surface of the frame provided with the first protrusion.
  • the bottom surface of the reinforcing block is flush with the bottom surface of the reinforcing beam provided with the second lower protrusion, and the bottom surface of the reinforcing block is flush with the bottom surface of the frame provided with the first protrusion.
  • the inner bottom plate is provided with a plurality of inner recesses, which are arranged to receive the battery module.
  • the reinforcing beams are provided in multiples; the bottom plate structure further includes a supporting beam, which is connected between two adjacent reinforcing beams.
  • the present application also provides a vehicle, which includes a battery tray and a battery module.
  • the battery tray is the battery tray in any of the foregoing embodiments, the battery tray is connected to the vehicle, and the battery module is installed on the battery tray.
  • the frame structure and the reinforcement beam In the battery tray of the present application, it is not necessary to process the frame structure and the reinforcement beam as in the background art. Since the volume and weight of the reinforcement block are much smaller than the frame structure and the reinforcement beam, the reinforcement beam is fixed only by the reinforcement block Connected to the frame structure, the frame structure and the reinforcing beam can be thickened and reduced in weight compared to the background technology, thereby increasing the strength of the battery tray and reducing the overall weight compared to the background technology, thereby avoiding the increased strength and Reducing weight has become a limiting factor.
  • FIG. 1 is a perspective view of an embodiment of a battery tray of the present application.
  • FIG. 2 is an exploded perspective view of the battery tray of FIG. 1.
  • FIG. 3 is a plan view of the battery tray of FIG. 1.
  • FIG. 4 is an assembled perspective view of the outer bottom plate, the reinforcement beam, and the support beam of the frame structure and bottom plate structure of the battery tray of FIG. 1.
  • FIG. 5 is an assembled perspective view of the frame structure and the bottom plate structure of the battery tray of FIG. 1.
  • FIG. 6 is an assembled perspective view of the frame structure of the battery tray of FIG. 1, the outer bottom plate and the reinforcing beam of the bottom plate structure.
  • Fig. 7 is a partial perspective view of part A of Fig. 6 showing the two frames in a state before assembly.
  • FIG. 8 is a partial perspective view of part A of FIG. 6 showing the two frames in an assembled state.
  • part B of FIG. 6 which shows the frame, reinforcement block, and reinforcement beam of the battery tray in a state before assembly.
  • FIG. 10 is a partial perspective view of part B of FIG. 6 showing the frame, reinforcement block, and reinforcement beam of the battery tray in the assembled state.
  • the battery tray of this application can be used to house battery modules.
  • the battery module (not shown) includes a plurality of batteries assembled side by side.
  • the battery may be a hard-shell battery (or referred to as a can-type battery) or a soft-pack battery (or referred to as a pouch-type battery).
  • the hard-shell battery includes an electrode assembly, a case, a top cover, a pole, a liquid injection hole, and an explosion-proof valve.
  • a housing cavity is formed inside the housing to accommodate the electrode assembly and the electrolyte.
  • the electrode assembly includes a positive electrode sheet, a negative electrode sheet, and a separator that separates the positive electrode sheet and the negative electrode sheet.
  • the positive electrode sheet, the negative electrode sheet, and the separator may be wound and formed, or the positive electrode sheet, the negative electrode sheet, and the separator may be laminated and formed.
  • Both the positive electrode sheet and the negative electrode sheet include a current collector and an active material layer provided on the current collector.
  • the soft-pack battery includes an encapsulation bag (for example, formed of an aluminum-plastic film), an electrode assembly (similar to the configuration and molding of a hard-shell battery), and a tab. A part of the tab is enclosed in the packaging bag and another part extends out of the packaging bag.
  • the tab can be formed directly from the pole piece or it can use an independent conductive material and be electrically connected to the current collector.
  • FIG. 1 is a perspective view of an embodiment of a battery tray of the present application.
  • FIG. 2 is an exploded perspective view of the battery tray of FIG. 1.
  • 3 is a plan view of the battery tray of FIG. 1.
  • 4 is an assembled perspective view of the outer bottom plate, the reinforcement beam, and the support beam of the frame structure and bottom plate structure of the battery tray of FIG. 1.
  • 5 is an assembled perspective view of the frame structure and the bottom plate structure of the battery tray of FIG. 1.
  • 6 is an assembled perspective view of the frame structure of the battery tray of FIG. 1, the outer bottom plate and the reinforcing beam of the bottom plate structure.
  • Fig. 7 is a partial perspective view of part A of Fig. 6 showing the two frames in a state before assembly.
  • FIG. 8 is a partial perspective view of part A of FIG.
  • FIG. 6 showing the two frames in an assembled state.
  • 9 is a partial perspective view of part B of FIG. 6, which shows the frame, reinforcement block, and reinforcement beam of the battery tray in a state before assembly.
  • FIG. 10 is a partial perspective view of part B of FIG. 6 showing the frame, reinforcement block, and reinforcement beam of the battery tray in the assembled state.
  • the battery tray of the present application includes a frame structure 1, a bottom plate structure 2, and a reinforcement block 3.
  • the frame structure 1 includes a plurality of frames 11 connected in order end to end, and is arranged to be connected to a vehicle.
  • the material of the frame structure 1 is an aluminum profile, and the frame structure 1 may be a hollow structure.
  • the end of the frame 11 may be provided with a fitting step 113, and each frame 11 is fitted by the fitting step 113 at the end.
  • the matching step 113 at the end of each frame 11 is correspondingly fitted and fixed together by welding.
  • the bottom plate structure 2 includes an inner bottom plate 21 and a reinforcing beam 22.
  • the bottom plate structure 2 further includes a support beam 23 and an outer bottom plate 24.
  • the material of the inner bottom plate 21 is a steel plate, an aluminum plate, or the like.
  • the inner bottom plate 21 is provided with a plurality of inner concave portions 211, which are arranged to house the battery module.
  • a plurality of inner recesses 211 are formed by stamping the inner bottom plate 21.
  • the inner bottom plate 21 is located inside the reinforcing beam 22 and is arranged to install a battery module.
  • the inner bottom plate 21 is fixed inside the frame structure 1.
  • the inner bottom plate 21 is fixed to the inside of the frame structure 1 by a detachable connection method (for example, riveting, glue or screw connection, etc.) to reduce welding deformation caused by welding and fixing.
  • a detachable connection method for example, riveting, glue or screw connection, etc.
  • the material of the reinforcement beam 22 is an aluminum profile, thereby ensuring light weight, high lightness, and low cost.
  • the reinforcing beam 22 is fixed inside the frame structure 1. In order to increase the strength, the reinforcing beam 22 is provided in multiples.
  • the supporting beam 23 is connected between two adjacent reinforcing beams 22.
  • the material of the support beam 23 is an aluminum profile, thereby ensuring light weight, high lightness, and low cost.
  • the number of supporting beams 23 between two adjacent reinforcing beams 22 can be set to one or more according to the needs of strength.
  • the outer bottom plate 24 is fixed inside the frame structure 1 and located outside the reinforcing beam 22.
  • the material of the outer bottom plate 24 is an aluminum plate, a skin, or the like.
  • the outer floor 24 is preferably skinned to reduce overall weight.
  • the outer bottom plate 24 is fixed to the inside of the frame structure 1 by a detachable connection method (for example, riveting, gluing or screw connection, etc.) to reduce welding deformation caused by welding and fixing.
  • a detachable connection method for example, riveting, gluing or screw connection, etc.
  • the bottom plate structure 2 increases the structural strength through the combination of the inner bottom plate 21 and the outer bottom plate 24 to cope with collisions, impacts, and the like.
  • the inner bottom plate 21 and the frame structure 1 are fixedly connected together with rivets R, and the bushing S is further used to make an interference fit between the inner bottom plate 21 and the frame structure 1 at some parts that need to be strengthened and fixed to reduce wear.
  • the outer bottom plate 24 and the frame structure 1 are fixedly connected by gluing.
  • the material of the reinforcement block 3 is an aluminum profile, thereby ensuring light weight, high lightness, and low cost.
  • the first end 31 of the reinforcing block 3 is cooperatively connected with the corresponding frame 11, and the second end 32 of the reinforcing block 3 is cooperatively connected with the reinforcing beam 22, so that the reinforcing beam 22 is fixedly connected to the frame structure 1 via the reinforcing block 3.
  • the number of reinforcing blocks 3 may be two, the first ends 31 of the two reinforcing blocks 3 are respectively connected to the corresponding frames 11, and the second ends 32 of the two reinforcing blocks 3 are respectively connected to the reinforcing beams 22 The two ends of the corresponding and matching connections.
  • the first end 31 of the reinforcement block 3 is provided to be connected to the corresponding frame 11 by friction stir welding, and the second end 32 of the reinforcement block 3 is provided to be connected to the end of the corresponding reinforcement beam 22 by friction stir welding.
  • the friction stir welding process has small thermal deformation, small residual stress, and high welding quality. After friction stir welding, due to the characteristics of the welding process, an indistinguishable solid bonding part will be formed between the reinforcing block 3 and the corresponding frame 11 and reinforcing beam 22, instead of clearly seeing the reinforcing block 3 and the corresponding The structural connection between the frame 11 and the reinforcing beam 22 is matched.
  • a reinforced block 3 is used for illustration.
  • the first end 31 of the reinforced block 3 is connected with the corresponding concave and convex of the corresponding frame 11 to make the positioning accurate and the connection stable.
  • the first end 31 of the reinforcement block 3 is provided with a first stepped portion 33 formed with a first groove 331, and the corresponding frame 11 is provided with a first protrusion 111 that cooperates with the first groove 331.
  • the second end 32 of the reinforcing block 3 and the end of the reinforcing beam 22 are connected in a concave-convex fit, so that the positioning is accurate and the connection is stable.
  • the second end 32 of the reinforcing block 3 is provided with a second upper stepped portion 34A, the second upper stepped portion 34A is formed with a second upper groove 341A, and the end of the reinforcing beam 22 is provided with a cooperation with the second upper groove 341A The second upper protrusion 221A.
  • the second end 32 of the reinforcing block 3 is also provided with a second lower step portion 34B, the second lower step portion 34B is formed with a second lower groove 341B, and the end portion of the reinforcing beam 22 is provided with a cooperation with the second lower groove 341B ⁇ second lower protrusion 221B.
  • the positioning is accurate and the connection is stable To improve the overall strength of the battery tray.
  • the top surface 35A of the reinforcement block 3 is flush with the top surface 222A of the reinforcement beam 22 provided with the second upper protrusion 221A, and the top surface 35A of the reinforcement block 3 is provided with the first protrusion 111
  • the top surface 112A of the frame 11 is flush.
  • the bottom surface 35B of the reinforcement block 3 is flush with the bottom surface 222B of the reinforcement beam 22 provided with the second lower protrusion 221B, and the bottom surface 35B of the reinforcement block 3 is flush with the bottom surface 112B of the frame 11 provided with the first protrusion 111 .
  • the frame structure 1 and the reinforcement beam 2 there is no need to process the frame structure 1 and the reinforcement beam 2 as in the background art. Since the volume and weight of the reinforcement block 3 are much smaller than the frame structure 1 and the reinforcement beam 2, only the The block 3 fixedly connects the reinforcing beam 22 to the frame structure 1, which can thicken the frame structure 1 and the reinforcing beam 2 and reduce the weight compared with the background art, thereby increasing the strength of the battery tray and reducing the overall weight compared to the background art , So as to avoid increasing strength and reducing weight in the background art as mutually restrictive factors.
  • the vehicle of the present application includes a battery tray and a battery module.
  • the battery module is installed on the battery tray.
  • the frame 11 of the frame structure 1 of the battery tray is connected to the vehicle.
  • the inner bottom plate 21 of the bottom plate structure 2 is installed with the battery module.

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Combustion & Propulsion (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Inorganic Chemistry (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • Battery Mounting, Suspending (AREA)

Abstract

一种电池托盘和车辆，其包括：框架结构（1），包括首尾依次连接的多个框架（11），设置成与车辆连接；底板结构（2），包括内底板（21）以及加强梁（22），内底板（21）位于加强梁（22）的内侧并设置成安装电池模组，内底板（21）以及加强梁（22）固定于框架结构（1）的内部；电池托盘还包括：加强块（3），加强块（3）的第一端（31）与对应的框架（11）配合连接，加强块（3）的第二端（32）与加强梁（22）配合连接，以使加强梁（22）经由加强块（3）固定连接于框架结构(1)。在电池托盘中，由于加强块的体积和重量相比框架结构和加强梁要小得多，所以仅通过加强块使加强梁固定连接于框架结构，就能增加电池托盘的强度并且减轻总体重量。

Description

电池托盘和车辆 技术领域
本申请涉及电动汽车领域，尤其涉及一种电池托盘和车辆。
背景技术
在电动汽车技术中，电池托盘用来安装容置电池模组，电池托盘通常包括框架结构和加强结构。目前为了增加电池托盘的强度，通常采用的手段是增加电池托盘的框架结构以及加强结构的厚度，致使重量增加，但重量增加从而使得增加强度和减轻重量成为相互制约的因素，难以在增加电池托盘的强度同时实现轻量化。
发明内容
鉴于现有技术存在的缺陷，本申请的目的在于提供一种电池托盘和车辆，其能增加电池托盘的强度并且减轻总体重量。
为了实现上述目的，本申请提供了一种电池托盘，其包括：框架结构，框架结构包括首尾依次连接的多个框架，设置成与车辆连接；底板结构，底板结构包括内底板以及加强梁，内底板位于加强梁的内侧并设置成安装电池模组，内底板以及加强梁固定于框架结构的内部；电池托盘还包括加强块，加强块的第一端与对应的框架配合连接，加强块的第二端与加强梁配合连接，以使加强梁经由加强块固定连接于框架结构。
在一实施例中，加强块的第一端与对应的框架凹凸配合连接。
在一实施例中，加强块的第一端设置有第一台阶部，第一台阶部形成有第一凹槽，对应的框架设置有与第一凹槽配合的第一突起。
在一实施例中，加强块的第二端与加强梁的端部凹凸配合连接。
在一实施例中，加强块的第二端设置有第二上台阶部，第二上台阶部形成有第二上凹槽，加强梁的所述端部设置有与第二上凹槽配合的第二上突起。
在一实施例中，加强块的第二端还设置第二下台阶部，第二下台阶部形成有第二下凹槽，加强梁的所述端部设置有与第二下凹槽配合的第二下突起。
在一实施例中，加强块的顶表面与设置有第二上突起的加强梁的顶表面平齐，并且加强块的顶表面与设置有第一突起的框架的顶表面平齐。
在一实施例中，加强块的底表面与设置有第二下突起的加强梁的底表面平齐，并且加强块的底表面与设置有第一突起的框架的底表面平齐。
在一实施例中，内底板设置有多个内凹部，设置成收容电池模组。
在一实施例中，加强梁以多个设置；底板结构还包括支撑梁，连接在相邻的两加强梁之间。
为了实现上述目的，本申请还提供了一种车辆，其包括电池托盘和电池模组，电池托盘为上述任一实施例中的电池托盘，电池托盘与车辆连接，电池模组安装于电池托盘。
本申请的有益效果如下：
在本申请的电池托盘中，无需像背景技术那样对框架结构和加强梁进行处理，由于加强块的体积和重量相比框架结构和加强梁要小得多，所以仅通过加强块使加强梁固定连接于框架结构，就能比背景技术中对框架结构和加强梁进行加厚而重量减轻，由此相比背景技术，增加电池托盘的强度并且减轻总体重量，从而避免背景技术中的增加强度和减轻重量成为相互制约的因素。
附图说明
图1是本申请的电池托盘的一实施例的立体图。
图2是图1的电池托盘的分解立体图。
图3是图1的电池托盘的俯视图。
图4是图1的电池托盘的框架结构和底板结构的外底板、加强梁以及支撑梁的组装立体图。
图5是图1的电池托盘的框架结构和底板结构的组装立体图。
图6是图1的电池托盘的框架结构和底板结构的外底板、加强梁的组装立体图。
图7是图6的A部分的局部立体图，其中示出组装前的状态下的两框架。
图8是图6的A部分的局部立体图，其中示出组装后的状态下的两框架。
图9是图6的B部分的局部立体图，其中示出组装前的状态下的电池托盘的框架、加强块和加强梁。
图10是图6的B部分的局部立体图，其中示出组装后的状态下的电池托盘的框架、加强块和加强梁。
其中，附图标记说明如下：
1框架结构                      24外底板
11框架                     3加强块
111第一突起                 31第一端
112A顶表面                 32第二端
112B底表面                 33第一台阶部
113配合台阶                  331第一凹槽
2底板结构                      34A第二上台阶部
21内底板                       341A第二上凹槽
211内凹部                  34B第二下台阶部
22加强梁                       341B第二下凹槽
221A第二上突起             35A顶表面
221B第二下突起             35B底表面
222A顶表面              R铆钉
222B底表面              S衬套
23支撑梁
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。
本申请的电池托盘可用于容置电池模组。
电池模组(未示出)包括多个并排组装在一起的电池。电池可为硬壳电池(或称为罐型电池)或软包电池(或称为袋型电池)。硬壳电池包括电极组件、壳体、顶盖、极柱、注液孔以及防爆阀等。壳体的内部形成收容腔，以容纳电极组件和电解液。电极组件包括正极片、负极片以及将正极片和负极片间隔开的隔离膜。电极组件可以将正极片、负极片以及隔离膜卷绕成型或将正极片、负极片以及隔离膜层叠成型。正极片、负极片均包括集流体和设置在集流体上的活性物质层。软包电池包括封装袋(例如由铝塑膜形成)、电极组件(与硬壳电池的构成和成型类似)以及极耳。极耳的一部分封装在封装袋内而另一部分延伸出封装袋。极耳可以由极片直接形成或采用独立的导电材料并电连接于集流体。
图1是本申请的电池托盘的一实施例的立体图。图2是图1的电池托盘的分解立体图。图3是图1的电池托盘的俯视图。图4是图1的电池托盘的框架结构和底板结构的外底板、加强梁以及支撑梁的组装立体图。图5是图1的电池托盘的框架结构和底板结构的组装立体图。图6是图1的电池托盘的框架结构和底板结构的外底板、加强梁的组装立体图。图7是图6的A部分的局部立体图，其中示出组装前的状态下的两框架。图8是图6的A部分的局部立体图，其中示出组装后的状态下的两框架。图9是图6的B部分的局部立体图，其中示出组装前的状态下的电池托盘的框架、加强块和加强梁。图10是图6的B部分的局部立体图，其中示出组装后的状态下的电池托盘的框架、加强块和加强梁。
本申请的电池托盘包括框架结构1、底板结构2以及加强块3。
框架结构1包括首尾依次连接的多个框架11，设置成与车辆连接。为减轻整体电池托盘的重量，框架结构1的材质为铝型材，框架结构1可为中空结构。为使框架11的上表面和下表面平齐，参照图6至图8，框架11的端部可设置有配合台阶113，各框架11通过端部的配合台阶113配合。通过焊接的方式各框架11的端部的配合台阶113对应配合并固定在一起。
底板结构2包括内底板21以及加强梁22。底板结构2还包括支撑梁23、以及外底板24。
内底板21的材质为钢板、铝板等。为了提高空间利用率，内底板21设置有多个内凹部211，设置成收容电池模组。多个内凹部211通过冲压内底 板21形成。内底板21位于加强梁22的内侧并设置成安装电池模组，内底板21固定于框架结构1的内部。内底板21通过可拆卸的连接方式(例如铆接、胶粘或螺纹连接等)固定于框架结构1的内部，以减少通过焊接固定的方式造成的焊接变形。
加强梁22的材质为铝型材，由此保证重量轻、轻度高、成本低。加强梁22固定于框架结构1的内部。为增加强度，加强梁22以多个设置。
如果内底板21在使用过程中需要受力，为增加强度，支撑梁23连接在相邻的两加强梁22之间。支撑梁23的材质为铝型材，由此保证重量轻、轻度高、成本低。相邻的两加强梁22之间的支撑梁23的数量可以依据强度的需要设置为一个或多个。
外底板24固定于框架结构1的内部并位于加强梁22的外侧。外底板24的材质为铝板、蒙皮等。外底板24优选为蒙皮，以减轻总体重量。外底板24通过可拆卸的连接方式(例如铆接、胶粘或螺纹连接等)固定于框架结构1的内部，以减少通过焊接固定的方式造成的焊接变形。在图中所示的实施例中，底板结构2通过内底板21和外底板24的结合增加结构强度，以应对碰撞、冲击等情况。并用铆钉R将内底板21与框架结构1固定连接在一起，并在一些需要加强固定的部位，进一步使用衬套S使内底板21与框架结构1之间过盈配合，以减小磨损。通过胶粘将外底板24与框架结构1固定连接在一起。
加强块3的材质为铝型材，由此保证重量轻、轻度高、成本低。加强块3的第一端31与对应的框架11配合连接，加强块3的第二端32与加强梁22配合连接，以使加强梁22经由加强块3固定连接于框架结构1。对于一个加强梁22，加强块3的数量可为两个，两个加强块3的第一端31分别与对应的框架11配合连接，两个加强块3的第二端32分别与加强梁22的两端对应并配合连接。加强块3的第一端31设置成与对应的框架11通过搅拌摩擦焊焊接连接，加强块3的第二端32设置成与对应的加强梁22的端部通过搅拌摩擦焊焊接连接。使用搅拌摩擦焊工艺热变形小、残余应力小，焊接质量高。搅拌摩擦焊后，由于焊接工艺的特点，加强块3与对应的框架11和加强梁22之间会形成难以区分的固态结合部分，而不是如图10所示能清楚看到加强块3、对应的框架11和加强梁22之间的各结构配合连接关系。
具体地，以一个加强块3进行说明，加强块3的第一端31与对应的框架11凹凸配合连接，以使定位精确、连接稳固。加强块3的第一端31设置有第一台阶部33，第一台阶部33形成有第一凹槽331，对应的框架11设置有与第一凹槽331配合的第一突起111。加强块3的第二端32与加强梁22的端部凹凸配合连接，以使定位精确、连接稳固。加强块3的第二端32设置有第二上台阶部34A，第二上台阶部34A形成有第二上凹槽341A，加强梁22的所述端部设置有与第二上凹槽341A配合的第二上突起221A。加强块3的第二端32还设置第二下台阶部34B，第二下台阶部34B形成有第二下凹槽341B，加强梁22的所述端部设置有与第二下凹槽341B配合的第二下突起221B。通过上述第一凹槽331和第一突起111、第二上凹槽341A和第二上突起221A以及第二下凹槽341B与第二下突起221B的这种配合连接方式，定位精确、连接稳固，提高电池托盘的整体强度。
为安装定位方便并便于机械加工，加强块3的顶表面35A与设置有第二上突起221A的加强梁22的顶表面222A平齐，并且加强块3的顶表面35A与设置有第一突起111的框架11的顶表面112A平齐。加强块3的底表面35B与设置有第二下突起221B的加强梁22的底表面222B平齐，并且加强块3的底表面35B与设置有第一突起111的框架11的底表面112B平齐。
在本申请的电池托盘中，无需像背景技术那样对框架结构1和加强梁2进行处理，由于加强块3的体积和重量相比框架结构1和加强梁2要小得多，所以仅通过加强块3使加强梁22固定连接于框架结构1，就能比背景技术中对框架结构1和加强梁2进行加厚而重量减轻，由此相比背景技术，增加电池托盘的强度并且减轻总体重量，从而避免背景技术中的增加强度和减轻重量成为相互制约的因素。
本申请的车辆包括电池托盘和电池模组，电池模组安装于电池托盘，电池托盘的框架结构1的框架11与车辆连接，底板结构2的内底板21安装电池模组。
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。
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 (11)

  1. 一种电池托盘，包括：
    框架结构(1)，包括首尾依次连接的多个框架(11)，设置成与车辆连接；
    底板结构(2)，包括内底板(21)以及加强梁(22)，内底板(21)位于加强梁(22)的内侧并设置成安装电池模组，内底板(21)以及加强梁(22)固定于框架结构(1)的内部；
    电池托盘还包括：
    加强块(3)，加强块(3)的第一端(31)与对应的框架(11)配合连接，加强块(3)的第二端(32)与加强梁(22)配合连接，以使加强梁(22)经由加强块(3)固定连接于框架结构(1)。
  2. 根据权利要求1所述的电池托盘，其特征在于，加强块(3)的第一端(31)与对应的框架(11)凹凸配合连接。
  3. 根据权利要求2所述的电池托盘，其特征在于，加强块(3)的第一端(31)设置有第一台阶部(33)，第一台阶部(33)形成有第一凹槽(331)，对应的框架(11)设置有与第一凹槽(331)配合的第一突起(111)。
  4. 根据权利要求1所述的电池托盘，其特征在于，加强块(3)的第二端(32)与加强梁(22)的端部凹凸配合连接。
  5. 根据权利要求4所述的电池托盘，其特征在于，加强块(3)的第二端(32)设置有第二上台阶部(34A)，第二上台阶部(34A)形成有第二上凹槽(341A)，加强梁(22)的所述端部设置有与第二上凹槽(341A)配合的第二上突起(221A)。
  6. 根据权利要求4所述的电池托盘，其特征在于，加强块(3)的第二端(32)还设置第二下台阶部(34B)，第二下台阶部(34B)形成有第二下 凹槽(341B)，加强梁(22)的所述端部设置有与第二下凹槽(341B)配合的第二下突起(221B)。
  7. 根据权利要求3或5所述的电池托盘，其特征在于，加强块(3)的顶表面(35A)与设置有第二上突起(221A)的加强梁(22)的顶表面(222A)平齐，并且加强块(3)的顶表面(35A)与设置有第一突起(111)的框架(11)的顶表面(112A)平齐。
  8. 根据权利要求3或6所述的电池托盘，其特征在于，加强块(3)的底表面(35B)与设置有第二下突起(221B)的加强梁(22)的底表面(222B)平齐，并且加强块(3)的底表面(35B)与设置有第一突起(111)的框架(11)的底表面(112B)平齐。
  9. 根据权利要求1所述的电池托盘，其特征在于，内底板(21)设置有多个内凹部(211)，设置成收容电池模组。
  10. 根据权利要求1所述的电池托盘，其特征在于，
    加强梁(22)以多个设置；
    底板结构(2)还包括：支撑梁(23)，连接在相邻的两加强梁(22)之间。
  11. 一种车辆，其特征在于，包括电池托盘和电池模组，电池托盘为如权利要求1-10中任一项所述的电池托盘，电池托盘与车辆连接，电池模组安装于电池托盘。
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US11148520B2 (en) 2021-10-19
US11548365B2 (en) 2023-01-10
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