WO2020003836A1 - Dispositif de support de bloc-batterie de véhicule - Google Patents

Dispositif de support de bloc-batterie de véhicule Download PDF

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Publication number
WO2020003836A1
WO2020003836A1 PCT/JP2019/020724 JP2019020724W WO2020003836A1 WO 2020003836 A1 WO2020003836 A1 WO 2020003836A1 JP 2019020724 W JP2019020724 W JP 2019020724W WO 2020003836 A1 WO2020003836 A1 WO 2020003836A1
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WO
WIPO (PCT)
Prior art keywords
bracket
battery pack
vehicle
frame
sheet metal
Prior art date
Application number
PCT/JP2019/020724
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English (en)
Japanese (ja)
Inventor
直龍 熊谷
Original Assignee
ダイムラー・アクチェンゲゼルシャフト
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Application filed by ダイムラー・アクチェンゲゼルシャフト filed Critical ダイムラー・アクチェンゲゼルシャフト
Publication of WO2020003836A1 publication Critical patent/WO2020003836A1/fr

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L50/00—Electric propulsion with power supplied within the vehicle
    • B60L50/50—Electric propulsion with power supplied within the vehicle using propulsion power supplied by batteries or fuel cells
    • B60L50/60—Electric propulsion with power supplied within the vehicle using propulsion power supplied by batteries or fuel cells using power supplied by batteries
    • B60L50/64—Constructional details of batteries specially adapted for electric vehicles
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62D—MOTOR VEHICLES; TRAILERS
    • B62D21/00—Understructures, i.e. chassis frame on which a vehicle body may be mounted
    • B62D21/02—Understructures, i.e. chassis frame on which a vehicle body may be mounted comprising longitudinally or transversely arranged frame members
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
    • H01M50/249—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders specially adapted for aircraft or vehicles, e.g. cars or trains
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
    • H01M50/262—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders with fastening means, e.g. locks
    • 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
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/60—Other road transportation technologies with climate change mitigation effect
    • Y02T10/70—Energy storage systems for electromobility, e.g. batteries

Definitions

  • the present invention relates to a vehicle battery pack support device.
  • Patent Document 1 discloses a holding structure for holding a driving battery pack on a ladder frame of an electric truck.
  • the ladder frame of the truck has a rigidity capable of stably supporting the weight of the vehicle, but also has a flexibility that allows a small amount of torsion or bending, so that, for example, an impact force received from a road surface during traveling. It is designed to absorb water.
  • the battery pack supported by the ladder frame via the support device is not designed on the assumption that stress due to deformation of the ladder frame is input. For this reason, in order to reduce the stress transmitted from the ladder frame to the battery pack, it is necessary to take measures such as adopting a configuration in which the displacement can be absorbed through an elastic body.
  • the present invention has been made in view of such a situation, and an object of the present invention is to provide a vehicle battery pack support device that can reduce manufacturing costs while meeting various rigidity requirements. Is to do.
  • a vehicle battery pack support device is a vehicle battery pack support device that suspends a battery pack on a side rail that forms a ladder frame of a vehicle, and is connected to an outer surface of the side rail.
  • a plurality of bent plate-like members are formed so that a bracket bottom surface that supports the elastic connecting portion while being orthogonally continuous and a bracket side surface that is orthogonally and continuously formed on both the bracket back surface and the bracket bottom surface is formed. It is laminated.
  • the vehicle battery pack supporting device suspends the battery pack mounted on the vehicle on the side rail via the frame side bracket and the elastic connecting portion.
  • the frame-side bracket is continuous while being orthogonal to both the bracket back surface that forms the connection surface with the outer surface of the side rail, the bracket bottom surface that forms the connection surface with the elastic connection portion, and both the bracket back surface and the bracket bottom surface. Consisting of side brackets.
  • the frame-side bracket is formed of a plurality of bent plate-shaped members on the rear surface of the bracket, the bottom surface of the bracket, and the side surfaces of the bracket, and is integrally formed by stacking these members.
  • the frame-side bracket can adjust the rigidity required for suspending the battery pack by adjusting the number of plate members stacked.
  • the frame side bracket can be formed by processing a common plate material for all of the plurality of plate-like members to be laminated. Therefore, the vehicle battery pack supporting device can reduce manufacturing costs while meeting various rigidity requirements.
  • the number of the plate-shaped members stacked on the bracket side surface may be different for each part.
  • the bracket side surface of the frame-side bracket has a portion that increases rigidity by increasing the number of stacked plate members, and a stack of plate members. By reducing the number of sheets, it is possible to form a portion for reducing the weight.
  • the bracket side surface has a boundary with the bracket rear surface and a boundary with the bracket bottom surface.
  • the number of laminated plate-shaped members may be the largest.
  • the bracket side faces are stacked with the largest number of plate members in a region where stress is most concentrated in supporting the battery pack, thereby enhancing rigidity. can do.
  • the bracket side surface is formed by stacking the plate-like members in a direction away from the side rail. The number may be reduced.
  • the bracket side faces are separated from the side rails with respect to the connection surface between the side rail and the frame side bracket that are relatively easily stressed. As the number of laminated plate members decreases, the weight can be efficiently reduced in accordance with the relaxation of the stress.
  • the side surface of the bracket is provided with the plate-like member in a direction away from the elastic connecting portion.
  • the number of layers may be reduced.
  • the side surface of the bracket is separated from the elastic connection portion with respect to the connection surface between the elastic connection portion and the frame-side bracket that are relatively easily subjected to stress.
  • the region in the above-described third to fifth aspects of the present invention, may be such that the region is the same as the vehicle height direction. It may extend to a position higher than the bottom surface of the side rail.
  • the position on the bracket rear surface of the bracket on the frame side bracket is
  • the frame-side bracket can be reinforced in the most rigid region of the side surface.
  • FIG. 1 is a top view schematically showing an overall configuration of a vehicle on which a vehicle battery pack support device according to the present invention is mounted.
  • FIG. 2 is a perspective view illustrating a schematic shape of a battery pack mounted on a vehicle. It is a perspective view which shows the structure and connection form of the support device which connects a side rail and a battery pack.
  • 1 is an exploded perspective view partially showing a support device according to the present invention. It is an exploded perspective view of a frame side bracket. It is a side view which shows typically the structure of the support apparatus seen from the vehicle front-back direction.
  • FIG. 1 is a top view schematically showing an overall configuration of a vehicle 1 on which a vehicle battery pack supporting device according to the present invention is mounted.
  • a vehicle 1 according to the present embodiment includes a ladder frame 10, a cab 20, a packing box 30, a wheel mechanism 40, a driving unit 50, a driving power supply unit 60, a battery pack 70, and a “vehicle battery”.
  • This is an electric truck including a support device 80 as a “pack support device”.
  • FIG. 1 shows a top view when the cab 20 and the packing box 30 are seen through the top surface of the vehicle 1.
  • the vehicle 1 is assumed to be an electric vehicle including an electric motor (a motor 51 described later) as a driving source for traveling, but may be a hybrid vehicle further including an engine. Further, the vehicle 1 is not limited to an electric truck, and may be another commercial vehicle including a battery for driving the vehicle, such as an electric garbage truck.
  • the ladder frame 10 has a side rail 11 and a plurality of cross members 12.
  • the side rails 11 extend along the vehicle front-rear direction X of the vehicle 1 and include a left side rail 11L and a right side rail 11R arranged in parallel with each other in the vehicle width direction Y.
  • the plurality of cross members 12 connect the left side rail 11L and the right side rail 11R. That is, the ladder frame 10 constitutes a so-called ladder type frame.
  • the ladder frame 10 supports the cab 20, the packing box 30, the drive unit 50, the drive power supply unit 60, the battery pack 70, and other heavy objects mounted on the vehicle 1.
  • the cab 20 is a structure including a driver's seat (not shown), and is provided above a front portion of the ladder frame 10.
  • the packing box 30 is a structure on which luggage and the like conveyed by the vehicle 1 are stacked, and is provided above a rear portion of the ladder frame 10.
  • the wheel mechanism 40 includes left and right front wheels 41 located in front of the vehicle, a front axle 42 as an axle of the two front wheels 41, and two rear wheels 43 located behind and located on the left and right of the vehicle. , And a rear axle 44 as an axle of the rear wheel 43. Then, in the vehicle 1 according to the present embodiment, the driving force is transmitted so that the rear wheel 43 functions as a driving wheel, and the vehicle 1 runs.
  • the wheel mechanism 40 is suspended on the ladder frame 10 via a suspension mechanism (not shown), and supports the weight of the vehicle 1.
  • the drive unit 50 has a motor 51, a speed reduction mechanism 52, and a differential mechanism 53.
  • the motor 51 generates a driving force necessary for the vehicle 1 to travel when AC power is supplied from a driving power supply unit 60 described later.
  • the reduction mechanism 52 includes a plurality of gears (not shown), and reduces the rotational torque input from the motor 51 and outputs the reduced rotation torque to the differential mechanism 53.
  • the differential mechanism 53 distributes the power input from the speed reduction mechanism 52 to the left and right rear wheels 43. That is, the drive unit 50 transmits the driving force to the rear axle 44 via the speed reduction mechanism 52 and the differential mechanism 53 by reducing the driving torque of the motor 51 to a rotation speed suitable for traveling of the vehicle.
  • the drive unit 50 can cause the vehicle 1 to run by rotating the rear wheel 43 via the rear axle 44.
  • the driving power supply unit 60 is a so-called inverter, converts DC power supplied from the battery pack 70 into AC power, supplies the AC power to the motor 51, and controls the rotation speed of the motor 51 according to an accelerator operation on the vehicle 1. .
  • the battery pack 70 is a secondary battery that supplies electric power to the motor 51 as an energy source for running the vehicle 1.
  • the battery pack 70 includes a plurality of relatively large-capacity battery modules (not shown) for storing electric power required for the vehicle 1.
  • battery pack 70 can also supply power to the power distribution unit. It may be configured as follows.
  • the support device 80 is a connection member for suspending the battery pack 70 on the ladder frame 10 as described in detail later.
  • three support devices 80 are provided on each side of the ladder frame 10 in the vehicle width direction Y (a total of six).
  • the number of the supporting devices 80 can be appropriately changed according to the weight and the size of the battery pack 70.
  • FIG. 2 is a perspective view illustrating a schematic shape of the battery pack 70 mounted on the vehicle 1.
  • the battery pack 70 is formed such that the first battery housing portion 71 and the second battery housing portion 72 each having a substantially rectangular parallelepiped shape having the same length in the vehicle front-rear direction X are integrated. Have been.
  • the first battery housing portion 71 is set to have a width that fits between the left side rail 11L and the right side rail 11R in the vehicle width direction Y.
  • the length of the second battery housing portion 72 in the vehicle width direction Y is set to be larger than the width of the first battery housing portion 71, and is connected to the first battery housing portion 71 from below in the vehicle height direction Z. .
  • the battery pack 70 has a shape in which the cross-sectional shape in a plane perpendicular to the vehicle front-rear direction X is an inverted T-shape.
  • the battery pack 70 is arranged so that the side rail 11 passes through a stepped portion caused by a difference in width between the first battery housing 71 and the second battery housing 72.
  • the battery pack 70 effectively uses the space between the left side rail 11L and the right side rail 11R and below the side rail 11 to increase the battery capacity.
  • the battery pack 70 is provided with a plurality of support device mounting areas 73 for connecting a battery-side bracket 82 described later on the side surface of the second battery housing portion 72 in the vehicle width direction Y.
  • FIG. 3 is a perspective view showing a configuration and a connection form of a support device 80 for connecting the side rail 11 and the battery pack 70. More specifically, FIG. 3 is a perspective view of one support device 80 connected to the left side rail 11L when viewed from diagonally forward left of the vehicle 1.
  • the side rail 11 has a shape in which a web 11w forming a plane perpendicular to the vehicle width direction Y and two flanges 11f forming a plane perpendicular to the vehicle height direction Z are continuous.
  • the web 11w through holes for fixing bolts for suspending various heavy objects on the vehicle 1 are formed in a lattice shape.
  • the support device 80 includes a frame-side bracket 81, a battery-side bracket 82, an elastic connecting portion 83, and a spacer 84.
  • the frame-side bracket 81 is a metal member connected to the outer surface of the side rail 11, that is, the web 11w.
  • the battery-side bracket 82 is a metal member fixed to the above-described support device mounting area 73 of the battery pack 70.
  • the elastic connecting portion 83 is a connecting member that elastically connects the frame-side bracket 81 and the battery-side bracket 82 vertically in the vehicle height direction Z.
  • the spacer 84 is a metal member that is interposed between the side rail 11 and the frame-side bracket 81 when the connection surfaces of the side rail 11 and the frame-side bracket 81 are separated from each other. Therefore, when the side rail 11 and the frame-side bracket 81 are not separated from each other, the spacer 84 becomes unnecessary.
  • the battery pack 70 is suspended on the side rail 11 via the support device 80 including the battery-side bracket 82, the elastic connecting portion 83, the frame-side bracket 81, and the spacer 84. You. For this reason, even when the side rail 11 is subjected to a stress due to torsion or bending as the vehicle 1 travels, the elastic connecting portion 83 may transmit the stress to the battery pack 70 due to the buffer effect. Can be reduced.
  • FIG. 4 is an exploded perspective view partially showing the support device 80 according to the present invention. More specifically, FIG. 4 illustrates a connection configuration of the frame-side bracket 81, the elastic connecting portion 83, and the spacer 84 in FIG.
  • the frame-side bracket 81 includes a bracket rear surface 81a, a bracket bottom surface 81b, and two bracket side surfaces 81c, and the respective surfaces are formed to be orthogonal to each other. Further, the frame-side bracket 81 includes a plurality of laminated fastening bolts 81d for integrally fastening a plurality of plate-like members constituting the frame-side bracket 81, as described later.
  • the bracket back surface 81a forms a plane perpendicular to the vehicle width direction Y, and is connected to the outer surface of the side rail 11 via a spacer 84 by a plurality of bolts (not shown).
  • the bracket bottom surface 81b forms a plane that is perpendicular to the vehicle height direction Z while being continuous with the bracket back surface 81a, and supports the elastic connecting portion 83 using an opening formed substantially at the center.
  • the two bracket side surfaces 81c are configured to be continuous with both the bracket back surface 81a and the bracket bottom surface 81b while being orthogonal to both.
  • the elastic connecting portion 83 includes a seat member 83a, an insertion member 83b, an elastic member 83c, and a plurality of fastening members 83d.
  • the seat member 83a is placed on the bracket bottom surface 81b of the frame-side bracket 81, and is fixed to the bracket bottom surface 81b by a plurality of fastening members 83d.
  • the insertion member 83b partially protrudes upward in the vehicle height direction Z from the seat surface member 83a, and penetrates through an opening formed in the seat surface member 83a and an opening in the bracket bottom surface 81b in the vehicle height direction Z. Is fixed to the battery-side bracket 82 located below.
  • the elastic member 83c is a so-called rubber bush that is interposed between the seat member 83a and the insertion member 83b and absorbs a stress caused by a relative displacement between the two.
  • the frame-side bracket 81 has a bracket rear surface 81 a connected to the side rail 11 in the vehicle width direction Y, and a bracket bottom surface 81 b having a weight of the battery pack 70 below the vehicle height direction Z via the elastic connecting portion 83. Support. Therefore, the two bracket side surfaces 81c prevent the relative angle between the bracket back surface 81a and the bracket bottom surface 81b from expanding.
  • FIG. 5 is an exploded perspective view of the frame-side bracket 81.
  • the frame-side bracket 81 is composed of a first sheet metal member 90, a second sheet metal member 91, and a third sheet metal member 92. These plate members are stacked and integrated by a plurality of stacked fastening bolts 81d (see FIG. 4). It is fixed and formed.
  • the first sheet metal member 90, the second sheet metal member 91, and the third sheet metal member 92 are obtained by cutting out a common sheet metal according to the respective shapes, and then cutting the above-described bracket back surface 81a, bracket bottom surface 81b, and 2 It is bent and formed so as to form one bracket side surface 81c.
  • the first sheet metal member 90 includes a first sheet metal back face 90a that is a part of the bracket back face 81a, a first sheet metal bottom face 90b that is a part of the bracket bottom face 81b while being continuous from the first sheet metal back face 90a, and a first sheet metal back face 90a. And a first sheet metal side surface 90c which is a part of the bracket side surface 81c while continuing from the first side.
  • the first sheet metal back surface 90a has substantially the same shape as the bracket back surface 81a when viewed in plan.
  • the first sheet metal bottom surface 90b has substantially the same shape as the seat surface member 83a of the elastic connection portion 83 when viewed in plan.
  • the first sheet metal side surface 90c is a substantially right triangle when viewed in plan, the width in the vehicle width direction Y is set shorter than the bracket side surface 81c.
  • the second sheet metal member 91 includes a second sheet metal back surface 91a that is a part of the bracket back surface 81a, a second sheet metal side surface 91c that is a part of the bracket side surface 81c while being continuous from the second sheet metal back surface 91a, and a second sheet metal side surface 91c. And a second sheet metal bottom surface 91b which is a part of the bracket bottom surface 81b while continuing from the bottom.
  • the second sheet metal back surface 91a has substantially the same shape as the bracket back surface 81a when viewed in plan.
  • the second sheet metal bottom surface 91b has substantially the same shape as the seat member 83a of the elastic connecting portion 83 when viewed in a plan view, but separates respective portions continuous with the two second sheet metal side surfaces 91c.
  • the gap G is formed between the two.
  • the second sheet metal side surface 91c has substantially the same shape as the bracket side surface 81c in plan view. Since the gap G is formed in the second sheet metal bottom surface 91b, the assemblability when the first sheet metal member 90, the second sheet metal member 91, and the third sheet metal member 92 are stacked is improved.
  • the third sheet metal member 92 includes a third sheet metal bottom surface 92b which is a part of the bracket bottom surface 81b, and a third sheet metal side surface 92c which is a part of the bracket side surface 81c while being continuous from the third sheet metal bottom surface 92b.
  • the third sheet metal bottom surface 92b has substantially the same shape as the seat surface member 83a of the elastic connecting portion 83 when viewed in plan.
  • the third sheet metal side surface 92c is a substantially right triangle when viewed in plan, but the height in the vehicle height direction Z is set lower than the bracket side surface 81c.
  • FIG. 6 is a side view schematically illustrating the configuration of the support device 80 as viewed from the vehicle front-back direction X. More specifically, FIG. 6 transparently shows the configuration of the frame-side bracket 81 when the support device 80 is viewed from the front in the vehicle front-rear direction X.
  • the number of plate-shaped members to be laminated differs from part to part on the bracket side surface 81c as shown as a first laminated region 93, a second laminated region 94, and a third laminated region 95 in FIG. .
  • the first stacked region 93 is a region in which a first sheet metal member 90, a second sheet metal member 91, and a third sheet metal member 92 are stacked (a region illustrated as a region I in FIG. 6).
  • the second stacked region 94 either the first sheet metal member 90 or the third sheet metal member 92 and the first sheet metal member 90 are stacked (a region illustrated as a region II in FIG. 6).
  • the third stacked region 95 is composed of only the second sheet metal member 91 (a region illustrated as a region III in FIG. 6).
  • connection directions of the frame-side bracket 81 with respect to the side rail 11 and the elastic connection portion 83 are orthogonal to each other.
  • the side rail 11 and the battery pack 70 The stress due to the relative displacement is concentrated.
  • the frame side bracket 81 strengthens the rigidity by setting the first laminated region 93 in which the number of laminated plate-like members is the largest in the region including the corner portion C in the bracket side surface 81c, thereby concentrating. Improves robustness against stress.
  • the second stacked region 94 or the third stacked region 95 is set according to the magnitude of the stress.
  • weight and material cost can be reduced by preventing the plate members from being excessively stacked. More specifically, the number of stacked plate-like members decreases in the vehicle width direction Y in the direction away from the side rail 11 in the vehicle width direction Y, and in the vehicle height direction Z, The number of laminated plate members decreases in the direction away from the elastic connecting portion 83.
  • the frame-side bracket 81 receives a stress in the roll direction. More specifically, in FIG. 6, for example, when the battery pack 70 is to be displaced rightward in the vehicle width direction Y, the battery-side bracket 82 and the elastic connecting portion 83 connected to the battery pack 70 are also displaced rightward. Then, a stress is generated on the bracket rear surface 81a in a direction in which the side of the side rail 11 goes downward from the side of the side rail 11, with a position P corresponding to the height of the bottom surface of the side rail 11 as a fulcrum. For this reason, stress concentrates on the bracket rear surface 81 a at a position P corresponding to the height of the bottom surface of the side rail 11.
  • the bracket side surface 81c is configured such that the first stacked region 93 in which the number of stacked plate-like members is the largest is formed by the side rail 11 in the vehicle height direction Z. It is configured to extend to a position higher than the bottom surface. Accordingly, the frame-side bracket 81 improves the robustness against the above-described stress in the roll direction in the first laminated region 93 having the highest rigidity in the bracket side surface 81c.
  • the frame-side bracket 81 connected to the outer surface of the side rail 11 and the battery-side bracket 82 connected to the battery pack 70 are connected by the elastic connection portion 83.
  • the battery pack 70 is elastically supported on the side rail 11.
  • the frame-side bracket 81 is configured by laminating a first sheet metal member 90, a second sheet metal member 91, and a third sheet metal member 92 formed by bending a plate member.
  • the support device 80 according to the present invention can respond to various rigidity requirements associated with the weight and connection direction of the battery pack 70 by the number of plate-like members stacked on the frame-side bracket 81.
  • the first sheet metal member 90, the second sheet metal member 91, and the third sheet metal member 92 can all be formed from a common sheet metal. Therefore, according to the support device 80 of the present invention, it is possible to reduce the manufacturing cost while meeting various rigidity requirements.
  • the frame-side bracket 81 is not reinforced when the strength of a part of the bracket back surface 81a, the bracket bottom surface 81b, or the bracket side surface 81c is insufficient due to, for example, a change in the weight of the battery pack 70 or a specification of a connection form.
  • a new sheet metal member can be added and laminated on a necessary portion.
  • the frame-side bracket 81 can use the existing first sheet metal member 90, second sheet metal member 91, and third sheet metal member 92 as they are, and needs to be redesigned as a whole according to new specifications. Specifications can be extended at low cost.
  • the range in which the battery pack 70 is connected to the side rails 11 via the plurality of support devices 80 becomes longer according to the length in the vehicle front-back direction X.
  • the influence of the displacement due to the twisting or bending of the side rail 11 is amplified between the front and the rear in the vehicle front-rear direction X according to the length.
  • the number of stacked plate members of each of the plurality of support devices 80 connected to the battery pack 70 may be adjusted depending on the installation position in the vehicle front-rear direction X.
  • the frame-side bracket 81 has different rigidities depending on the number of laminated plate-like members on the bracket side surface 81c for each part, and thus has a rigidity corresponding to the number of laminated members.
  • the bracket side surface 81c can reinforce the region where the stress is most concentrated by maximizing the number of laminated plate members in the region including the corner C at the intersection of the bracket back surface 81a and the bracket bottom surface 81b. it can.
  • the frame side bracket 81 can reduce the number of stacked layers in the portion where the stress is relatively relaxed on the bracket side surface 81c, and can achieve weighing. More specifically, the number of stacked plate-like members in the direction away from the side rail 11 is larger than the connection surface between the side rail 11 and the frame-side bracket 81, which are relatively easily subjected to stress. By reducing the weight, it is possible to efficiently reduce the weight according to the relaxation of the stress. In addition, the number of stacked plate-shaped members on the bracket side surface 81c decreases in a direction away from the elastic connection portion 83 with respect to the connection surface between the elastic connection portion 83 and the frame-side bracket 81, which are relatively easily subjected to stress. As a result, efficient weight reduction according to the relaxation of the stress can be achieved.
  • the bracket side surface 81c has the highest rigidity of the first laminated region 93 at the connecting portion between the side rail 11 and the frame-side bracket 81 higher than the height of the bottom surface of the side rail 11. It extends to a position higher than the vehicle height direction Z. Thereby, the bracket side surface 81c can have rigidity against the stress in the roll direction that the frame side bracket 81 receives.
  • the support device 80 since the support device 80 according to the present invention connects the side rail 11 and the battery pack 70 on both sides in the vehicle width direction Y, the support device 80 is provided between the left side rail 11L and the right side rail 11R, and A continuous space consisting of a region below the side rail 11 can be secured, and a large battery pack 70 can be arranged in the vehicle 1.
  • the support device 80 includes a connection portion between the side rail 11 and the frame-side bracket 81, a connection portion between the frame-side bracket 81 and the elastic connection portion 83, and a connection in which a plurality of plate members are integrally laminated. All parts are fastened by bolts, not by welding.
  • the connecting portions are connected by welding, the opposing surfaces are connected to each other, and therefore, depending on conditions, there is a possibility that the welding surface becomes vulnerable to stress.
  • each connecting portion is fixed by the bolt straddling both members to be connected, robustness against stress can be enhanced.
  • the present invention is not limited to the above embodiment.
  • the specific shapes of the first sheet metal member 90, the second sheet metal member 91, and the third sheet metal member 92 have been exemplified. It can be changed according to various conditions such as a connection form between the battery pack 70 and the battery pack 70.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • General Chemical & Material Sciences (AREA)
  • Electrochemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Combustion & Propulsion (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Power Engineering (AREA)
  • Sustainable Energy (AREA)
  • Sustainable Development (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • Arrangement Or Mounting Of Propulsion Units For Vehicles (AREA)
  • Battery Mounting, Suspending (AREA)
  • Body Structure For Vehicles (AREA)

Abstract

Le problème décrit par la présente invention consiste à fournir un dispositif de support de bloc-batterie de véhicule qui permet d'obtenir une réduction du coût de fabrication tout en satisfaisant diverses exigences en termes de rigidité. La solution selon l'invention porte sur un dispositif de support (80) permettant de suspendre un bloc-batterie (70) à un rail latéral (11) constituant un cadre de gouvernail (10) d'un véhicule (1) comportant : un support côté cadre (81) raccordé à une âme (11w) du rail latéral (11) ; et une partie de raccordement élastique (83) permettant de raccorder élastiquement le support côté cadre (81) au bloc-batterie (70). Le support côté cadre (81) est formé par l'empilement d'une pluralité d'éléments en forme de plaque courbés pour former : une surface arrière de support (81a) raccordée à l'âme (11w) ; une surface inférieure de support (81b) qui est continue avec et perpendiculaire à la surface arrière de support (81a) et supporte la partie de raccordement élastique (83) ; et une surface latérale de support (81c) qui est continue avec et perpendiculaire à à la fois la surface arrière de support (81a) et la surface inférieure de support (81b).
PCT/JP2019/020724 2018-06-27 2019-05-24 Dispositif de support de bloc-batterie de véhicule WO2020003836A1 (fr)

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JP2018-121978 2018-06-27
JP2018121978A JP7122889B2 (ja) 2018-06-27 2018-06-27 車両用バッテリパック支持装置

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Cited By (3)

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Publication number Priority date Publication date Assignee Title
SE2050378A1 (en) * 2020-04-03 2020-12-21 Scania Cv Ab A suspension arrangement for supporting a battery unit and a vehicle comprising such a suspension arrangement
CN113224438A (zh) * 2020-02-05 2021-08-06 丰田自动车株式会社 电池组的车载结构
US20220219522A1 (en) * 2019-05-31 2022-07-14 Daimler Ag Electric Truck Frame

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JP7322914B2 (ja) 2021-03-24 2023-08-08 いすゞ自動車株式会社 車載機器取付装置

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JPS4915112A (fr) * 1972-05-31 1974-02-09
JPS55163250U (fr) * 1979-05-15 1980-11-22
JPH08324453A (ja) * 1995-05-31 1996-12-10 Isuzu Motors Ltd 車両の重量物搭載構造
JP2004071281A (ja) * 2002-08-05 2004-03-04 Nissan Motor Co Ltd 電池、複合組電池及び車両
JP2010036901A (ja) * 2009-09-15 2010-02-18 Mitsubishi Motors Corp 電気自動車のバッテリ搭載構造
JP2017071253A (ja) * 2015-10-06 2017-04-13 トヨタ自動車株式会社 電池パックの固定構造
WO2017104034A1 (fr) * 2015-12-16 2017-06-22 ボルボ トラック コーポレーション Dispositif de fixation de batterie

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JP4915112B2 (ja) 2006-03-10 2012-04-11 日産自動車株式会社 車間維持支援装置および車間維持支援方法
JP5892644B2 (ja) 2011-06-08 2016-03-23 ダイムラー・アクチェンゲゼルシャフトＤａｉｍｌｅｒ ＡＧ 車両のバッテリ装置
JP5829514B2 (ja) * 2011-12-28 2015-12-09 ヤマハモーターエンジニアリング株式会社 車両

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JPS4915112A (fr) * 1972-05-31 1974-02-09
JPS55163250U (fr) * 1979-05-15 1980-11-22
JPH08324453A (ja) * 1995-05-31 1996-12-10 Isuzu Motors Ltd 車両の重量物搭載構造
JP2004071281A (ja) * 2002-08-05 2004-03-04 Nissan Motor Co Ltd 電池、複合組電池及び車両
JP2010036901A (ja) * 2009-09-15 2010-02-18 Mitsubishi Motors Corp 電気自動車のバッテリ搭載構造
JP2017071253A (ja) * 2015-10-06 2017-04-13 トヨタ自動車株式会社 電池パックの固定構造
WO2017104034A1 (fr) * 2015-12-16 2017-06-22 ボルボ トラック コーポレーション Dispositif de fixation de batterie

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20220219522A1 (en) * 2019-05-31 2022-07-14 Daimler Ag Electric Truck Frame
CN113224438A (zh) * 2020-02-05 2021-08-06 丰田自动车株式会社 电池组的车载结构
CN113224438B (zh) * 2020-02-05 2023-03-07 丰田自动车株式会社 电池组的车载结构
SE2050378A1 (en) * 2020-04-03 2020-12-21 Scania Cv Ab A suspension arrangement for supporting a battery unit and a vehicle comprising such a suspension arrangement

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