WO2023276375A1 - 車両用バッテリパックの支持装置、及び電動トラック - Google Patents
車両用バッテリパックの支持装置、及び電動トラック Download PDFInfo
- Publication number
- WO2023276375A1 WO2023276375A1 PCT/JP2022/015160 JP2022015160W WO2023276375A1 WO 2023276375 A1 WO2023276375 A1 WO 2023276375A1 JP 2022015160 W JP2022015160 W JP 2022015160W WO 2023276375 A1 WO2023276375 A1 WO 2023276375A1
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- WIPO (PCT)
- Prior art keywords
- vehicle
- battery pack
- holes
- battery
- support device
- Prior art date
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Images
Classifications
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- 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
-
- 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
- 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
- B60L50/66—Arrangements of batteries
-
- 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
- B62D21/09—Means for mounting load bearing surfaces
-
- 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
- H01M50/242—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 adapted for protecting batteries against vibrations, collision impact or swelling
-
- 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
- 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 case relates to a support device that supports a battery pack for a vehicle, and an electric truck that includes this support device.
- the space on the side of the ladder frame (outside in the vehicle width direction) between the wheel bases is used as a mounting space for various in-vehicle devices such as low-voltage batteries and side sensors.
- various in-vehicle devices such as low-voltage batteries and side sensors.
- the battery pack is arranged below the ladder frame, the mounting space for the on-vehicle equipment is reduced by the battery pack, so there is a possibility that the mountability of the on-vehicle equipment may deteriorate.
- the physical size of the battery pack is determined according to the maximum charging capacity required for the vehicle, the shape of the battery cells, etc., and should be designed to a size that protrudes outward from the ladder frame in the vehicle width direction.
- a relatively rigid metal such as steel is used, or the thickness of the member covering the battery pack is increased. need arises. As a result, the total weight of the supporting device increases, which may adversely affect the cruising range and load capacity of the electric truck.
- This invention was invented in view of the above-mentioned problems, and while improving the protection performance of the vehicle battery pack in the event of a side collision, it improves the mountability of in-vehicle equipment and suppresses the weight increase of the support device. It is an object of the present invention to provide a battery pack supporting device for a vehicle and an electric truck capable of achieving the above.
- a vehicle battery pack support device is mounted below a side rail that constitutes a ladder frame of a vehicle and has a pair of battery side surfaces facing outward in the vehicle width direction.
- the battery-side bracket is located outside the side rail in the vehicle width direction, the battery-side bracket having a facing plate facing the side surface of the battery and housing the vehicle battery pack; a frame-side bracket connecting the battery-side bracket and the side rail, and the facing plate of the battery-side bracket are provided with a plurality of holes, and an in-vehicle device is mounted on the battery-side bracket through the holes, and a patterned opening in which the plurality of holes are arranged in a predetermined pattern.
- an impact load that is input from the outside in the vehicle width direction at the time of a side collision is input to the vehicle-mounted device before being input to the battery-side bracket. is absorbed by the in-vehicle equipment. Since this reduces the impact load transmitted to the battery side bracket, the impact load transmitted to the vehicle battery pack through the battery side bracket is also reduced. Therefore, it is possible to enhance the protection performance of the vehicle battery pack in the event of a side collision.
- the facing plate of the battery-side bracket is provided with a patterned opening having a plurality of holes. As a result, a mounting space for the on-vehicle equipment can be secured and the mountability of the on-vehicle equipment can be improved. Furthermore, since the weight of the battery-side bracket is reduced by the amount of formation of the plurality of holes, an increase in the weight of the support device can be suppressed.
- the plurality of holes may be arranged symmetrically in a side view of the battery side bracket.
- the rigidity distribution in the left-right direction (vehicle front-rear direction) in the side view of the battery side bracket can be evened out, for example, the rigidity distribution can be made substantially uniform. Therefore, the protection performance of the vehicle battery pack can be further enhanced.
- the plurality of holes may be vertically symmetrically arranged in a side view of the battery-side bracket.
- the rigidity distribution in the vertical direction in the side view of the battery side bracket can be evened out, for example, the rigidity distribution can be made substantially uniform. Therefore, the protection performance of the vehicle battery pack can be further enhanced.
- the plurality of holes may be arranged in a planar grid pattern.
- the planar lattice here includes, for example, a square lattice, a rectangular lattice, and an orthorhombic lattice.
- the arrangement of the plurality of holes may be, for example, a layout that matches part of the hole pattern (partial match) or a layout that matches the entire hole pattern (perfect match).
- the plurality of holes are arranged in a portion of the web surface of the side rail located directly above the vehicle battery pack. It may correspond to the hole pattern.
- the arrangement pitch of the plurality of holes may be set to an integral multiple of the arrangement pitch of the hole pattern.
- the opposing plate has a convex portion that protrudes outward in the vehicle width direction and is provided with the plurality of holes, and a convex portion that is inward of the convex portion in the vehicle width direction. It may be formed in a wavy shape by alternately arranging the concave portions located in the . In this way, by forming the unevenness on the facing plate and drilling a plurality of holes in the projections, the thickness of the facing plate can be reduced, and the strength against side impact can be ensured while reducing the weight. Further, by providing a hole in the protrusion, it becomes easier to secure a distance between the fastener inserted through the hole and the vehicle battery pack, and deformation and damage of the vehicle battery pack due to contact with the fastener can be prevented.
- the opposing plate is an extruded member having a cavity extending in the vehicle length direction, and the plurality of holes extends from the cavity in the vehicle width direction. It may be provided so as to penetrate the opposing plate toward the outside. In this way, by using the extruded material having the cavity as the opposing plate, the cavity can function as a crushable zone against side collision, and the strength against side collision can be ensured while reducing the weight. Further, by penetrating the plurality of holes from the inside of the cavity toward the outside in the vehicle width direction, it is possible to secure a distance between the on-vehicle device and the vehicle battery pack, thereby preventing the vehicle battery pack from being deformed or damaged.
- An electric truck according to this application example includes the vehicle battery pack supporting device according to any one of (1) to (9) above. As a result, similar to (1) above, it is possible to enhance the protection performance of the vehicle battery pack in the event of a side collision, improve the mountability of in-vehicle equipment, and suppress an increase in the weight of the support device.
- the vehicle-mounted device may include a housing provided with a charging port for externally supplying power to the vehicle battery pack.
- the charging port of the housing can be easily arranged outside in the vehicle width direction, compared to the case where the housing is mounted on the side rails.
- the vehicle-mounted device may include a sensor that detects an object outside in the vehicle width direction.
- the sensor can be easily arranged on the outer side in the vehicle width direction compared to the case where the sensor is mounted on the side rail.
- the sensor can be placed in a specified position without having to install a special bracket extending from the side rail to place the sensor in a specified position, thereby reducing the number of parts and simplifying the structure. It is possible to appropriately set the detection range of the sensor.
- the in-vehicle device may include a bodywork mounted on the vehicle or an accompanying device of the bodywork.
- the bodywork includes, for example, a CIB (Charge Inlet Box) device, a vehicle side object detection sensor (radar, camera) provided to prevent entrainment, a refrigerator/freezer, a power generator, a lighting device, a water supply device, Shredder devices, waste storage devices, crane devices and the like may be included.
- the accompanying devices may include motors, compressors, pumps, wiring materials, piping materials, tool boxes, auxiliary equipment, and the like.
- the same bodywork and auxiliary equipment can be mounted on the battery-side bracket, for example, the same bodywork and auxiliary equipment can be installed in almost the same position as existing vehicles that do not have a vehicle battery pack. , the convenience and usability of the vehicle can be further enhanced.
- FIG. 1 is a perspective view of a supporting device for a vehicle battery pack according to a first embodiment
- FIG. FIG. 2 is an exploded perspective view for explaining the structure of the supporting device of FIG. 1
- 2A to 2C are side views illustrating patterns of holes formed in the patterned openings of the end cross member in the supporting device of FIG. 1
- FIG. FIG. 2 is a left side view illustrating side rails and end cross members in the support device of FIG. 1
- FIG. 3 is a cross-sectional view illustrating a method of mounting an in-vehicle device in the support device of FIG. 1
- FIG. 3 is a cross-sectional view illustrating a method of mounting an in-vehicle device in the support device of FIG. 1
- FIG. 3 is a cross-sectional view illustrating a method of mounting an in-vehicle device in the support device of FIG. 1
- FIG. 7 is a perspective view of an end cross member included in a vehicle battery pack support device according to a second embodiment
- 8A to 8C are side views illustrating patterns of holes formed in the patterned openings of the end cross member in the supporting device of FIG. 7
- FIG. FIG. 8 is a left side view illustrating side rails and end cross members in the support device of FIG. 7
- FIG. 8 is a cross-sectional view illustrating a mounting method of an in-vehicle device in the support device of FIG. 7
- FIG. 8 is a cross-sectional view illustrating a mounting method of an in-vehicle device in the support device of FIG. 7
- FIG. 11 is a perspective view of an end cross member as a modified example of the second embodiment
- FIG. 11 is a perspective view of an end cross member as a modified example of the second embodiment;
- FIG. 11 is a perspective view of an end cross member included in a vehicle battery pack support device according to a third embodiment;
- FIG. 15 is a cross-sectional view illustrating a mounting method of an in-vehicle device in the support device of FIG. 14;
- FIG. 15 is a cross-sectional view illustrating a mounting method of an in-vehicle device in the support device of FIG. 14;
- FIG. 11 is a perspective view of an end cross member as a modification of the third embodiment;
- FIG. 18 is a cross-sectional view illustrating a mounting method of an in-vehicle device in the support device of FIG. 17;
- a vehicle battery pack support device 1 (hereinafter also simply referred to as a support device 1) according to the first embodiment is mounted on an electric truck (vehicle) 3 having a ladder frame 2.
- the electric truck 3 is an electric vehicle (electric vehicle, hybrid vehicle) that runs by supplying electric power of a driving battery pack 4 (vehicle battery pack) to a motor (not shown).
- the front-rear direction of the electric truck 3 is also referred to as the vehicle length direction D1
- the left-right direction of the electric truck 3 is also referred to as the vehicle width direction D2.
- the up-down direction perpendicular to both the front-rear direction and the left-right direction is also referred to as a vehicle height direction D3.
- the front is indicated by "FR”
- the rear is indicated by “RR”
- the left is indicated by "LH”
- the right is indicated by "RH”
- the upper is indicated by "UP”
- the lower is indicated by "DW”.
- indicated by . 1 shows the lower structure of the electric truck 3, and the upper structure (body) arranged above the ladder frame 2 is omitted.
- the ladder frame 2 is a member forming the skeleton of the electric truck 3 and has high rigidity and strength.
- the ladder frame 2 includes a pair of side rails 21 extending in the vehicle length direction D1 and a plurality of cross members 22 extending in the vehicle width direction D2 and connecting the side rails 21 to each other.
- the pair of side rails 21 are arranged apart from each other in the vehicle width direction D2.
- Each side rail 21 has a pair of plate-like flange portions extending inward in the vehicle width direction D2 from upper and lower edges of plate-like web portions along the vehicle length direction D1 and the vehicle height direction D3. It has a channel shape (U-shaped cross section).
- the plurality of cross members 22 are spaced apart from each other in the vehicle length direction D1.
- two cross members 22 are respectively arranged at two positions, namely a position overlapping the battery pack 4 in the vehicle height direction D3 and a position behind the battery pack 4, respectively.
- the battery pack 4 is, for example, a general-purpose high-voltage battery pack used in passenger cars.
- the battery pack 4 is mounted below the pair of side rails 21 and protrudes further outward in the vehicle width direction D2 than the side rails 21 .
- a box-shaped battery pack 4 whose dimension in the vehicle height direction D3 is smaller (thinner) than each dimension in the vehicle length direction D1 and the vehicle width direction D2 is exemplified.
- the shape of the battery pack 4 is not particularly limited.
- the battery pack 4 has a pair of battery side surfaces 41 facing outward in the vehicle width direction D2.
- the pair of battery side surfaces 41 are located outside the pair of side rails 21 in the vehicle width direction D2. More specifically, the right battery side 41 is positioned to the right of the right side rail 21 and the left battery side 41 is positioned to the left of the left side rail 21 .
- the battery pack 4 is preferably arranged over a wide range of the wheelbase (the distance between the front wheel axle and the rear wheel axle). In a relatively small (relatively short wheelbase) electric truck 3, one battery pack 4 can be arranged over substantially the entire wheelbase. In this case, the front wheels are arranged close to the front of the battery pack 4 , and the rear wheels are arranged close to the rear of the battery pack 4 .
- the size of the electric truck 3 and the number of battery packs 4 are not limited to those illustrated in the first embodiment.
- a plurality of battery packs 4 may be arranged side by side in the vehicle length direction D ⁇ b>1 on the relatively large electric truck 3 (having a relatively long wheelbase). Also in this case, by arranging a plurality of battery packs 4 over a wide range of the wheelbase, the overall capacity of the battery packs 4 can be increased, and the cruising distance can be ensured.
- the support device 1 connects the battery pack 4 to the side rails 21 and supports the battery pack 4 .
- the battery pack 4 is supported by the side rails 21 via the support device 1 .
- the support device 1 is symmetrical (plane symmetric) with respect to a vertical plane passing through the center of the vehicle width direction D2 and extending in the vehicle length direction D1 as a plane of symmetry.
- the support device 1 includes a battery side bracket 5 that houses the battery pack 4 and a frame side bracket 6 that connects the battery side bracket 5 and the side rails 21 .
- the battery-side bracket 5 is an outer wall body arranged on the outer periphery of the battery pack 4 and has a function of protecting the battery pack 4 from impact loads.
- the frame-side bracket 6 extends outward and downward in the vehicle width direction D2 from the side rail 21 and has a function of suspending the battery pack 4 accommodated in the battery-side bracket 5 from the side rail 21 .
- the battery-side bracket 5 of the first embodiment includes a pair of end cross members 7 arranged outside (left and right) of the battery pack 4 in the vehicle width direction D2, and a pair of end cross members 7 arranged outside (front and rear) of the battery pack 4 in the vehicle length direction D1. It has a pair of main brackets 8 arranged thereon.
- the battery side bracket 5 is arranged so as to surround the battery pack 4 on all four sides with the end cross member 7 and the main bracket 8 .
- the pair of end cross members 7 are formed symmetrically with respect to a vertical plane extending in the vehicle length direction D1 through the center in the vehicle width direction D2.
- the pair of main brackets 8 are also formed symmetrically with respect to each other with respect to a vertical plane passing through the center in the vehicle length direction D1 and extending in the vehicle width direction D2 as a plane of symmetry.
- both the end cross member 7 and the main bracket 8 of the first embodiment are made of steel plate and have a channel shape.
- the end cross member 7 includes a web portion 71 arranged along the side surface 41 of the battery, and a pair of web portions 71 projecting from the upper edge and the lower edge of the web portion 71 toward the battery pack 4 (inward in the vehicle width direction D2). and a flange portion 72 .
- the web portion 71 is arranged apart from the battery side surface 41 (with a gap), so that a deformation allowance (shock load absorption allowance) at the time of collision is secured.
- the battery-side bracket 5 has a facing plate 51 that faces the battery side surface 41 .
- the web portion 71 of the end cross member 7 forms a facing plate 51 facing the battery side surface 41 in the battery side bracket 5 .
- the facing plate 51 is not in contact with the battery side surface 41 .
- the opposing plate 51 (the web portion 71 of the end cross member 7 ) may be arranged in contact with the battery side surface 41 .
- the main bracket 8 has a web portion 81 arranged along the front surface 42 or the rear surface 43 of the battery pack 4, and protrudes from the upper edge and lower edge of the web portion 81 toward the battery pack 4 (inward in the vehicle length direction D1). and a pair of flange portions 82 provided.
- the flange portion 82 of the main bracket 8 is overlaid on the battery pack 4 side (inner side in the vehicle height direction D3) than the flange portion 72 of the end cross member 7, and is attached to a fixture (not shown) or any joining means (welding, adhesion, etc.). is connected to the flange portion 72 of the end cross member 7 via the .
- the frame side bracket 6 is fixed to the portion where the upper flange portions 72 and 82 of the end cross member 7 and the main bracket 8 overlap.
- the frame side bracket 6 is also fixed to the web portion of the side rail 21 .
- an example is shown in which two frame-side brackets 6 are provided on each side of the electric track 3 (outside of each side rail 21 in the vehicle width direction D2) (four in total).
- the facing plate 51 (web portion 71 ) of the battery-side bracket 5 is provided with patterned openings 9 .
- the pattern-shaped opening 9 is a portion in which a plurality of holes 95 arranged in a predetermined pattern are formed, and is a portion to which the vehicle-mounted device 10 is to be attached.
- the "predetermined pattern” means a pattern including "an arrangement shape of the holes 95 formed by laying plane figures having at least one or more holes 95 without gaps".
- the "predetermined pattern” includes not only patterns containing periodic array shapes, but also patterns containing non-periodic array shapes.
- various vehicle-mounted devices 10 can be mounted on the battery side bracket 5 through the plurality of holes 95 provided in the patterned opening 9 .
- the shape of the hole 95 can be arbitrarily set, and may be circular or rectangular, for example.
- the front edge and the rear edge of the facing plate 51 of the first embodiment can be formed in a half-moon shape notched in a side view, for example, in order to reduce the weight of the battery-side bracket 5 .
- the patterned openings 9 are arranged within a range sandwiched between the cutouts in the front and rear.
- FIGS. 3(A) to 3(C) and FIG. Axis C1 shown in these drawings is the center line of opposing plate 51 (web portion 71) extending in vehicle height direction D3 in a side view of battery side bracket 5 (end cross member 7), and axis C2 is the center line of the opposing plate 51 (web portion 71) extending in the vehicle length direction D1.
- 3A and 3B show a plurality of battery-side brackets 5 (end cross members 7) arranged in a planar grid pattern (for example, square grid pattern, rectangular grid pattern, orthorhombic lattice pattern, etc.) in a side view.
- the holes 95 are arranged symmetrically in the horizontal direction and symmetrical in the vertical direction.
- the pitch of the holes 95 in the vertical direction is, for example, set to be the same as the pitch in the horizontal direction or an integral multiple thereof.
- a square grid pattern (or rectangular grid pattern) arranged in 6 rows in the horizontal direction and 4 rows in the vertical direction is arranged at a predetermined interval (for example, a pitch in the horizontal direction) in the vehicle length direction D1. are arranged with the same or integral multiple dimensions).
- FIG. 3B the middle rows (second and third rows from the top) are deleted from the pattern of holes 95 of FIG. 3A, leaving only the top and bottom rows.
- These layouts are symmetrical about the axis C1 and vertically symmetrical about the axis C2.
- FIG. 3(C) shows a side view of the battery-side bracket 5 (end cross member 7) in which a plurality of holes 95 arranged in an orthorhombic grid are arranged symmetrically about the axis C1.
- a plurality of holes 95 arranged in an orthorhombic grid are arranged symmetrically about the axis C1.
- four rows in which holes 95 are arranged in the horizontal direction at predetermined intervals are arranged in the vertical direction.
- the horizontal positions of the holes 95 are set so as not to coincide with the horizontal positions of the holes 95 included in vertically adjacent rows.
- the arrangement pattern of the holes 95 is staggered.
- the pitch in the vertical direction of the holes 95 is set equal to the pitch in the horizontal direction, for example, and the pitch in the diagonal direction is set to a constant value.
- FIG. 4 shows the arrangement of the holes 95 provided in the patterned openings 9 corresponding to the hole pattern 24 of the side rail 21.
- FIG. The web surface 23 of the side rail 21 is formed with a predetermined hole pattern 24 (for example, a planar lattice hole pattern 24).
- the arrangement pitch (vertical and horizontal pitches) of the holes 95 is set to be the same as the arrangement pitch of the hole pattern 24 or an integral multiple thereof.
- the layout of the holes 95 of the patterned opening 9 may be completely matched with the hole pattern 24 of the side rail 21, or may be partially matched. Further, the arrangement of the plurality of holes 95 may be set so as to correspond to the hole pattern 24 formed in the portion of the web surface 23 of the side rail 21 located directly above the battery pack 4 .
- a plurality of holes 95 may be formed in the patterned opening 9 in a layout in which the hole pattern 24 of the side rail 21 is vertically moved downward as it is in the side view of the electric truck 3 .
- the specific positions and number of holes 95 are not limited to those illustrated above.
- the patterned openings 9 may include weld bolts 91 and weld nuts 94 for attaching the in-vehicle device 10 to the battery side bracket 5 (end cross member 7).
- the weld bolt 91 has a head 92 welded to the opposing plate 51 and a threaded portion 93 projecting outward from the head 92 . More specifically, the welding bolt 91 is inserted into the facing plate 51 (web portion 71) of the battery-side bracket 5 with the threaded portion 93 inserted from the inside in the vehicle width direction D2 into a hole 95 passing through the facing plate 51 (web portion 71). 51.
- the threaded portion 93 of the weld bolt 91 is inserted through a through hole (not shown) formed in the in-vehicle device 10 (or its bracket or the like) and then fastened to the nut 14 .
- the in-vehicle device 10 is attached to the patterned opening 9 including the welding bolts 91 .
- the weld nut 94 is welded to the opposing plate 51 . Specifically, the weld nut 94 is fixed to the opposing plate 51 while being coaxial with the hole 95 . The weld nut 94 is fastened to the bolt 15 inserted from the outside in the vehicle width direction D2 through a through hole (not shown) formed in the vehicle-mounted device 10 (or its bracket or the like). As a result, the in-vehicle device 10 is attached to the patterned opening 9 including the weld nut 94 .
- the bolt 15 fastened to the weld nut 94 has a length dimension L of the threaded portion sufficiently larger than the distance (gap) S between the battery side surface 41 and the opposing plate 51 . It is set short (L ⁇ S).
- the method of mounting the in-vehicle device 10 in the patterned opening 9 is not limited to the method using the welding bolt 91 and the welding nut 94, and various known methods can be applied.
- the in-vehicle device 10 may be mounted in the patterned opening 9 with normal bolts and nuts (not shown) that are not welded to the facing plate 51 .
- some in-vehicle devices 10 may be directly welded to the patterned openings 9 .
- the vehicle-mounted device 10 of the first embodiment detects a housing 12 provided with a charging port 11 for externally supplying power to the battery pack 4 and an object outside in the vehicle width direction D2. and sensor 13 .
- a housing 12 provided with a charging port 11 for externally supplying power to the battery pack 4 and an object outside in the vehicle width direction D2.
- sensor 13 a sensor 13 .
- the housing 12 is mounted in the left patterned opening 9 and the sensor 13 is mounted in the right patterned opening 9 is shown.
- Both the housing 12 and the sensor 13 are provided so as to protrude outward in the vehicle width direction D2 from the battery side bracket 5 .
- the housing 12 is also called a CIB (Charge Inlet Box), and is provided at a predetermined position where the charging port 11 can be accessed from the outside of the electric truck 3 .
- the charging port 11 in the housing 12 is arranged facing outward in the vehicle width direction D2.
- the sensor 13 is, for example, a radar or a camera that is applied to a technology (so-called vehicle side object detection sensor) that detects an object existing in the blind spot of the electric truck 3 and notifies the driver of it.
- the sensor 13 is provided at a predetermined position where the blind spot is the detection range.
- the battery pack 4 is mounted below the side rails 21, and the battery side surface 41 is located outside the side rails 21 in the vehicle width direction D2, so that the capacity of the battery pack 4 can be increased.
- the battery pack 4 protrudes further outward in the vehicle width direction D2 than the side rails 21, the mountability of the in-vehicle device 10 on the side rails 21 may deteriorate.
- the facing plate 51 of the battery-side bracket 5 is provided with a patterned opening 9 in which a plurality of holes 95 are formed. As a result, a mounting space for the vehicle-mounted device 10 can be secured outside the battery-side bracket 5, and the mountability of the vehicle-mounted device can be improved. Further, since the weight of the battery side bracket 5 is reduced by the amount of the formation of the plurality of holes 95, an increase in the weight of the support device 1 can be suppressed.
- a gap of distance S is secured between the facing plate 51 of the battery-side bracket 5 (the web portion 71 of the end cross member 7) and the battery side surface 41.
- the in-vehicle device 10 is mounted by forming a plurality of holes in the front side and the rear side (the web portion 81 of the main bracket 8) of the battery pack 4. It is also conceivable to let However, in this case, the side of the battery pack 4 cannot be covered by the in-vehicle device 10, and the protection performance of the battery pack 4 in the event of a side collision deteriorates. In particular, since the battery side surface 41 is arranged to protrude further outward in the vehicle width direction D2 than the side rail 21, it is desirable to take some protective measures against side collisions.
- the side of the battery pack 4 can be covered, and the battery pack 4 can be protected in the event of a side collision. Performance can be easily improved.
- the type of onboard equipment 10 to be mounted on the electric truck 3 is determined in advance, it is conceivable to provide only the holes 95 suitable for the onboard equipment 10 in the patterned opening 9 .
- the arrangement of the plurality of holes 95 tends to be uneven on the plate surface of the opposing plate 51, which may cause local deformation and stress concentration.
- the rigidity distribution of the opposing plate 51 can be made substantially uniform. It is possible to prevent the occurrence of local deformation and stress concentration.
- the inventors of the present invention have found that the main physical load at the time of a side collision is not absorbed by the opposing plate 51 but is transmitted from the flange portion 72 of the end cross member 7 to the frame side bracket 6. As a result, it was found that the side rails 21 absorbed it.
- the mountability of the vehicle-mounted device 10 is improved by intentionally forming a plurality of holes 95 in the facing plate 51 of the battery-side bracket 5, and the battery pack by the vehicle-mounted device 10 is provided. 4 can be easily obtained.
- the battery pack 4 support device 1 according to the first embodiment is created based on an original idea not seen in the prior art, and has unique properties far removed from the prior art. It can be said that it is a thing.
- the plurality of holes 95 can be arranged symmetrically in a side view of the battery side bracket 5 .
- a plurality of holes 95 are arranged symmetrically about the axis C1.
- the plurality of holes 95 can be vertically symmetrically arranged when the battery side bracket 5 is viewed from the side.
- a plurality of holes 95 are vertically symmetrically arranged about the axis C2.
- the plurality of holes 95 can be arranged in a planar lattice.
- the planar lattice here includes, for example, a square lattice, a rectangular lattice, and an orthorhombic lattice.
- FIG. 3A shows an example of a square lattice
- FIG. 3C shows an example of an orthorhombic lattice.
- the plurality of holes 95 can be arranged so as to correspond to the hole pattern 24 of the side rail 21 .
- a plurality of holes 95 are arranged to coincide with a portion of hole pattern 24 .
- the plurality of holes 95 can be arranged so as to correspond to the hole pattern 24 formed in the portion of the web surface 23 of the side rail 21 located directly above the vehicle battery pack. For example, as shown in FIG. 4, in a side view of the electric truck 3, a plurality of holes 95 are arranged in such a layout that the hole pattern 24 of the side rail 21 is vertically moved downward. By arranging the holes 95 in this manner, the mounting position of the vehicle-mounted device 10 in the vehicle length direction can be substantially the same between the electric truck 3 equipped with the battery pack 4 and the electric truck 3 not equipped with the battery pack 4 .
- the arrangement pitch of the plurality of holes 95 can be set to an integral multiple of the arrangement pitch of the hole patterns 24 .
- the vertical pitch and horizontal pitch of the hole pattern 24 are both 50 mm
- the vertical pitch and horizontal pitch of the plurality of holes 95 are set to 50 mm or 100 mm.
- the arrangement pitch of the plurality of holes 95 may be matched with the arrangement pitch of the hole patterns 24 .
- the mountability of the in-vehicle device 10 can be ensured while improving the protection performance of the battery pack 4 in the event of a side collision.
- the housing 12 may be mounted on the side rails 21.
- the charging port 11 can be easily arranged outside in the vehicle width direction D2.
- the housing 12 can be arranged at a predetermined position without extending from the side rail 21 a dedicated bracket for arranging the housing 12 at the predetermined position. Therefore, it is possible to ensure workability of supplying power to the charging port 11 while reducing the number of parts and simplifying the structure.
- the sensor 13 According to the electric truck 3 in which the sensor 13 for detecting an object outside in the vehicle width direction D2 is mounted in the pattern-shaped opening 9, compared to the case where the sensor 13 is mounted on the side rail 21, the sensor 13 can be easily arranged outside in the vehicle width direction D2. As a result, the sensor 13 can be arranged at a predetermined position without extending from the side rail 21 a dedicated bracket for arranging the sensor 13 at the predetermined position. Therefore, the detection range of the sensor 13 can be appropriately set while reducing the number of parts and simplifying the structure.
- the vehicle battery pack support device 1 differs from the first embodiment in the configuration of the opposing plate 51 (web portion 71) of the battery-side bracket 5.
- the opposing plate 51 web portion 71
- the opposing plate 51 has a convex portion 52 formed in a shape that protrudes outward in the vehicle width direction D2, and a protrusion 52 that is positioned inside the convex portion 52 in the vehicle width direction D2.
- a recessed portion 53 is provided.
- the plurality of holes 95 described above are formed in the convex portion 52 .
- the projecting shape of the convex portion 52 may have a polygonal cross-sectional shape, or may have a curved cross-sectional shape.
- the projecting shape of the convex portion 52 shown in FIG. 7 is trapezoidal (or rectangular) toward the outside in the vehicle width direction D2 with the surface of the opposing plate 51 (web portion 71) connected to the flange portion 72 as a reference. It has a cross-sectional shape that protrudes into the
- the recessed portion 53 is recessed inward in the vehicle width direction D2 with respect to the portion of the projected portion 52 where the hole 95 is formed.
- the convex portions 52 and the concave portions 53 are arranged alternately. Therefore, the overall shape of the opposing plate 51 (web portion 71) is wavy.
- the cross-sectional shape of the facing plate 51 (web portion 71) obtained by cutting along the direction in which the convex portions 52 and the concave portions 53 are alternately arranged is a wave-like shape vibrating in the vehicle width direction D2. Become.
- the overall shape of the convex portion 52 shown in FIG. 7 is likened to a ridge in which the projecting portion extends linearly along the vehicle length direction D1.
- the overall shape of the recessed portion 53 shown in FIG. 7 is similar to a groove in which the recessed portion extends linearly along the vehicle length direction D1.
- the extending directions of these convex portions 52 and concave portions 53 are parallel.
- the arrangement position of the hole 95 can be set to any position as long as it is on the surface of the convex portion 52 .
- the hole 95 is arranged in the planar portion of the convex portion 52 that is located on the outermost side in the vehicle width direction D2. In this way, the entire planar portion in which the holes 95 are drilled constitutes the patterned openings 9 .
- FIGS. 8(A) to (C) and FIG. 8A and 8B show a plurality of battery-side brackets 5 (end cross members 7) arranged in a planar grid pattern (for example, square grid pattern, rectangular grid pattern, orthorhombic grid pattern, etc.) in a side view.
- the holes 95 are arranged symmetrically in the horizontal direction and symmetrical in the vertical direction.
- the pitch of the holes 95 in the vertical direction is, for example, set to be the same as the pitch in the horizontal direction or an integral multiple thereof.
- the vertical pitch of the projections 52 is also set equal to or integral multiple of the vertical pitch of the holes 95 .
- FIG. 8A and 8B show a plurality of battery-side brackets 5 (end cross members 7) arranged in a planar grid pattern (for example, square grid pattern, rectangular grid pattern, orthorhombic grid pattern, etc.) in a side view.
- the holes 95 are arranged symmetrically in the horizontal direction and symmetrical in the vertical direction.
- a square grid pattern (or rectangular grid pattern) arranged in 6 rows in the horizontal direction and 4 rows in the vertical direction is arranged at a predetermined interval (for example, a pitch in the horizontal direction) in the vehicle length direction D1. are arranged with the same or integral multiple dimensions).
- the middle rows (second and third rows from the top) are deleted from the pattern of holes 95 in FIG. 8A, leaving only the top and bottom rows.
- These layouts are symmetrical about the axis C1 and vertically symmetrical about the axis C2. It is also possible to omit only the holes 95 in the middle row from the pattern of the holes 95 in FIG.
- FIG. 8(C) shows a side view of the battery-side bracket 5 (end cross member 7) in which a plurality of holes 95 arranged in an orthorhombic grid are arranged symmetrically about the axis C1.
- a plurality of holes 95 arranged in an orthorhombic grid are arranged symmetrically about the axis C1.
- four rows in which holes 95 are arranged in the horizontal direction at predetermined intervals are arranged in the vertical direction.
- the horizontal positions of the holes 95 are set so as not to coincide with the horizontal positions of the holes 95 included in vertically adjacent rows.
- the arrangement pattern of the holes 95 is staggered.
- the pitch in the vertical direction of the holes 95 is set equal to the pitch in the horizontal direction, for example, and the pitch in the diagonal direction is set to a constant value.
- FIG. 9 shows the arrangement of the holes 95 provided in the patterned opening 9 corresponding to the hole pattern 24 of the side rail 21 .
- the web surface 23 of the side rail 21 is formed with a predetermined hole pattern 24 (for example, a planar grid hole pattern 24).
- the arrangement pitch (vertical and horizontal pitches) of the holes 95 is set to be the same as the arrangement pitch of the hole pattern 24 or an integral multiple thereof.
- the layout of the holes 95 of the patterned opening 9 may be completely matched with the hole pattern 24 of the side rail 21, or may be partially matched. Further, the arrangement of the plurality of holes 95 may be set so as to correspond to the hole pattern 24 formed in the portion of the web surface 23 of the side rail 21 located directly above the battery pack 4 .
- a plurality of holes 95 may be formed in the patterned opening 9 in a layout in which the hole pattern 24 of the side rail 21 is vertically moved downward as it is in the side view of the electric truck 3 .
- the specific positions and number of holes 95 are not limited to those illustrated above.
- the patterned openings 9 may include weld bolts 91 and weld nuts 94 for attaching the in-vehicle device 10 to the battery side bracket 5 (end cross member 7).
- the weld bolt 91 has a head 92 welded to the opposing plate 51 and a threaded portion 93 projecting outward from the head 92 . More specifically, the welding bolt 91 is inserted into the facing plate 51 (web portion 71) of the battery-side bracket 5 with the threaded portion 93 inserted from the inside in the vehicle width direction D2 into a hole 95 passing through the facing plate 51 (web portion 71). 51.
- the height H of the head 92 of the weld bolt 91 is set to a dimension smaller than the projection dimension P of the projection 52 shown in FIG. 6 (H ⁇ P). This makes it difficult for the head 92 of the welding bolt 91 and the battery pack 4 to interfere in the event of a vehicle side collision.
- the threaded portion 93 of the weld bolt 91 is inserted through a through hole (not shown) formed in the in-vehicle device 10 (or its bracket or the like) and then fastened to the nut 14 . As a result, the in-vehicle device 10 is attached to the patterned opening 9 including the welding bolts 91 .
- the weld nut 94 is welded to the opposing plate 51 . Specifically, the weld nut 94 is fixed to the opposing plate 51 while being coaxial with the hole 95 . The weld nut 94 is fastened to the bolt 15 inserted from the outside in the vehicle width direction D2 through a through hole (not shown) formed in the vehicle-mounted device 10 (or its bracket or the like). As a result, the in-vehicle device 10 is attached to the patterned opening 9 including the weld nut 94 .
- the bolt 15 fastened to the weld nut 94 has a length dimension L of the threaded portion sufficiently larger than the distance (gap) S between the battery side surface 41 and the opposing plate 51 . It is set short (L ⁇ S).
- the thickness T of the weld nut 94 is set to a dimension smaller than the projection dimension P of the projection 52 shown in FIG. 7 (T ⁇ P). This makes it difficult for the weld nut 94 and the battery pack 4 to interfere with each other in the event of a vehicle side collision.
- the length L of the threaded portion of the bolt 15 is also desirably set to be as short as possible so that the weld nut 94 can be screwed together.
- the support device 1 by alternately arranging the convex portions 52 and the concave portions 53 on the facing plate 51, the rigidity of the facing plate 51 is increased. It is possible to reduce the plate thickness. Therefore, while reducing the weight of the battery side bracket 5, it is possible to ensure the strength against side impact. Further, by providing the hole 95 in the convex portion 52, it becomes easier to secure the distance between the fastener (for example, the weld bolt 91, the weld nut 94, etc.) inserted through the hole 95 and the battery pack 4, and the fastener and the fastener are easily secured. Deformation and breakage of the battery pack 4 due to contact can be prevented.
- the fastener for example, the weld bolt 91, the weld nut 94, etc.
- the support device 1 of the present embodiment it is possible to improve the mountability of the in-vehicle device 10 while improving the protection performance of the battery pack 4 in the event of a side collision, and to suppress the weight increase of the support device 1 .
- FIG. 12 and 13 are perspective views showing modifications of the battery side bracket 5 (end cross member 7).
- the opposing plate 51 (web portion 71) shown in FIG. 12 has a convex portion 52 and a concave portion 53 extending along the vehicle height direction D3.
- a rectangular lattice pattern in which the holes 95 are arranged in three rows in the horizontal direction and four rows in the vertical direction are arranged at predetermined intervals in the vehicle length direction D1.
- the plurality of holes 95 are arranged horizontally and vertically symmetrically when viewed from the side. In this way, even when the uneven grooves are formed in the vertical direction, the rigidity of the opposing plate 51 can be increased, and the same functions and effects as those of the above-described embodiment can be obtained.
- the opposing plate 51 (web portion 71) shown in FIG. 13 includes a first protrusion 54 extending in the vehicle length direction D1 and a second protrusion extending in the vehicle height direction D3 as protrusions protruding outward in the vehicle width direction D2. and two convex portions 55 .
- a third convex portion 56 is provided at the intersection of the first convex portion 54 and the second convex portion 55 in a side view.
- a portion surrounded by the first protrusion 54 and the second protrusion 55 (a portion belonging to neither the first protrusion 54 nor the second protrusion 55 ) becomes the recess 53 .
- the plurality of holes 95 are formed, for example, in the third convex portion 56, and are arranged symmetrically left-right and symmetrically up-down when viewed from the side. In this way, even when the concave-convex grooves intersect vertically and horizontally, the rigidity of the opposing plate 51 can be increased, and effects and effects similar to those of the above-described embodiment can be obtained.
- the vehicle battery pack support device 1 differs from the first and second embodiments in the configuration of the facing plate 51 (web portion 71) of the battery-side bracket 5.
- FIG. 14 the opposing plate 51 (web portion 71) is formed in an extruded shape having a cavity 57 inside.
- This cavity 57 is formed so as to cover the entire outer end portion of the battery-side bracket 5 (end cross member 7) in the vehicle width direction D2, and functions as a crushable zone in the event of a side collision.
- the cross-sectional shape of the peripheral wall surrounding the cavity 57 is preferably a closed cross-sectional shape, more preferably a polygonal shape (for example, rectangular or trapezoidal).
- the extending direction (extrusion direction) of the cavity 57 is the direction along the vehicle length direction D1.
- the number of cavities 57 may be one or plural.
- the composition of the opposing plate 51 does not matter, and for example, aluminum alloys, magnesium alloys, steel materials, ceramics, synthetic resins, etc. can be used.
- the opposing plate 51 of the present embodiment is made of an extruded aluminum alloy material (aluminum extruded material) which is advantageous in formability, weight, and cost.
- the plurality of holes 95 are provided so as to pass through the facing plate 51 from the cavity 57 outward in the vehicle width direction D2.
- the plurality of holes 95 are formed in the peripheral wall that surrounds the cavity 57 and that is located outside in the vehicle width direction D2.
- the vehicle-mounted device 10 attached to the patterned opening 9 via the plurality of holes 95 is arranged outside the cavity 57 in the vehicle width direction D2. Therefore, a cavity 57 is interposed between the vehicle-mounted device 10 and the battery pack 4 .
- a plate 58 to which fasteners (for example, welding bolts 91, welding nuts 94, etc.) for attaching the in-vehicle device 10 are fixed may be inserted inside the cavity 57 .
- a plurality of plate holes 59 corresponding to the plurality of holes 95 are bored in the plate 58 , and weld bolts 91 and weld nuts 94 are fixed inside the respective plate holes 59 .
- the horizontal pitch of the plate holes 59 is set to be the same as the horizontal pitch of the holes 95 .
- the patterned openings 9 may include weld bolts 91 and weld nuts 94 for attaching the in-vehicle device 10 to the battery side bracket 5 (end cross member 7).
- 15 shows the plate 58 with weld bolts 91 fixed thereto
- FIG. 16 shows the plate 58 with weld nuts 94 fixed thereto.
- the weld bolt 91 has a head 92 welded to the plate 58 and a threaded portion 93 projecting outward from the head 92 .
- the weld bolt 91 is welded and fixed to the plate 58 with the screw portion 93 inserted into the plate hole 59 from the inside in the vehicle width direction D2.
- the plate 58 is attached inside the cavity 57 so that the threaded portion 93 is inserted into the hole 95 from the inside in the vehicle width direction D2.
- the threaded portion 93 of the weld bolt 91 is inserted through a through hole (not shown) formed in the in-vehicle device 10 (or its bracket or the like) and then fastened to the nut 14 .
- the in-vehicle device 10 is attached to the patterned opening 9 .
- a weld nut 94 is welded to the plate 58, as shown in FIG. Specifically, a weld nut 94 is secured to the plate 58 while being coaxially positioned with the plate hole 59 . Also, this plate 58 is inserted inside the cavity 57 so that the centers of the plate holes 59 and holes 95 are aligned.
- the weld nut 94 is fastened to the bolt 15 inserted from the outside in the vehicle width direction D2 through a through hole (not shown) formed in the vehicle-mounted device 10 (or its bracket or the like). As a result, the in-vehicle device 10 is attached to the patterned opening 9 including the weld nut 94 .
- the bolt 15 fastened to the weld nut 94 is set such that the length dimension L of the threaded portion is sufficiently shorter than the inner dimension (gap) S of the cavity 57 (L ⁇ S).
- the facing plate 51 is made of the extruded aluminum material having the cavity 57 inside, so that the weight can be easily reduced as compared with the case where the steel material is used, for example. , which is advantageous in terms of molding and cost.
- the on-vehicle device 10 can be installed at a location outside the cavity 57 in the vehicle width direction D2. can be set to As a result, the cavity 57 can function as a crushable zone in the event of a side collision, reducing initial collision energy and preventing deformation and damage to the battery pack 4 .
- the support device 1 of the present embodiment it is possible to improve the mountability of the in-vehicle device 10 while improving the protection performance of the battery pack 4 in the event of a side collision, and to suppress the weight increase of the support device 1 .
- FIG. 17 is a perspective view showing a modification of the battery-side bracket 5 (end cross member 7), and FIG. 18 is a cross-sectional view thereof.
- the opposing plate 51 (web portion 71) shown in FIGS. 17 and 18 is made of an extruded material having a single cavity 57 therein.
- the plurality of holes 95 are formed in the outer peripheral wall in the vehicle width direction D ⁇ b>2 of the peripheral walls surrounding the cavity 57 .
- the plate 58 inserted into the cavity 57 is provided with a plurality of plate holes 59 arranged in the same layout as the plurality of holes 95 .
- the configuration of the battery side bracket 5 according to the above embodiment, second embodiment, and third embodiment is an example.
- the battery-side bracket 5 may have at least a shape that has a facing plate 51 facing the battery side surface 41 and accommodates the battery pack 4, and may be formed of members other than the end cross member 7 and the main bracket 8 described above. good.
- the configuration, arrangement and number of frame-side brackets 6 are also not limited to the above examples.
- the specific structure of the patterned openings 9 is not limited to the above examples.
- the patterned openings 9 may include both the weld bolts 91 and the weld nuts 94 or may include structures other than the weld bolts 91 and the weld nuts 94 .
- the in-vehicle device 10 mounted in the pattern-shaped opening 9 various devices mounted on the electric truck 3 can be employed without being limited to the housing 12 and the sensor 13 described above.
- the in-vehicle device 10 may include a low-voltage battery (not shown) for auxiliary equipment of the electric truck 3 .
- the support device 1 and the electric truck 3 can prevent the battery pack 4 from crashing in the event of a side collision, as in the first, second, and third embodiments.
- the mountability of the in-vehicle device 10 can be ensured while improving the protection performance.
- the other vehicle-mounted device 10 include a mounting device mounted on the electric truck 3 and an accompanying device for the mounting device.
- the mounting equipment includes refrigeration equipment, power generation equipment, lighting equipment, water supply equipment, shredder equipment, waste storage equipment, crane equipment, and the like.
- the accompanying devices include motors, compressors, pumps, wiring materials, piping materials, tool boxes, and the like.
- a bodywork device and ancillary devices are attached to the side rail 21 through relatively long brackets.
- the mounting device and the auxiliary device are attached to the facing plate 51 (the web portion 71 of the end cross member 7) of the battery side bracket 5 located outside the side rail 21 in the vehicle width direction D2. Therefore, shorter brackets than conventional brackets are sufficient. Therefore, the bracket can be made smaller, the vibration resistance can be improved, and the cost can be reduced.
- the application target of the support device 1 is not limited to the electric truck 3 described above. Support device 1 is applicable to various vehicles having ladder frame 2 .
- Support device (battery pack support device) 2 Ladder frame 3 Electric truck (vehicle) 4 battery pack (vehicle battery pack) 5 Battery side bracket 6 Frame side bracket 7 End cross member 8 Main bracket 9 Pattern-shaped opening 10 In-vehicle device 11 Charging port 12 Housing 13 Sensor 14 Nut 15 Bolt 21 Side rail 22 Cross member 23 Web surface 24 Hole pattern 41 Battery side 42 Front surface 43 Rear surface 51 Opposing plate 52 Projection 53 Recess 54 First projection 55 Second projection 56 Third projection 57 Cavity 58 Plate 59 Plate hole 71 Web portion 72 Flange portion 81 Web portion 82 Flange portion 91 Welding bolt 92 Head 93 Threaded portion 94 Weld nut 95 Hole
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Abstract
Description
(1)本適用例に係る車両用バッテリパックの支持装置は、車両のラダーフレームを構成するサイドレールの下方に搭載され、車幅方向外側にそれぞれ向く一対のバッテリ側面を有し、前記バッテリ側面が前記サイドレールよりも車幅方向外側に位置する車両用バッテリパックの支持装置であって、前記バッテリ側面と対向する対向板を有し、前記車両用バッテリパックを収容するバッテリ側ブラケットと、前記バッテリ側ブラケットと前記サイドレールとを連結するフレーム側ブラケットと、前記バッテリ側ブラケットの前記対向板において、複数の孔を形成されるとともに前記孔を介して車載機器を前記バッテリ側ブラケットに搭載させ、かつ前記複数の孔を所定パターンで配置されたパターン状開口部と、を含むことを特徴としている。
複数の孔を左右対称に配置することで、バッテリ側ブラケットの側面視における左右方向(車両前後方向)についての剛性分布を均すことができ、例えば剛性分布をほぼ均一にできる。したがって、車両用バッテリパックの保護性能をさらに高められる。
複数の孔を上下対称に配置することで、バッテリ側ブラケットの側面視における上下方向についての剛性分布を均すことができ、例えば剛性分布をほぼ均一にできる。したがって、車両用バッテリパックの保護性能をさらに高められる。
ここでいう平面格子状には、例えば、正方格子状や矩形格子状や斜方格子状が含まれる。複数の孔を平面格子状に配置することで、車載機器の搭載位置を容易に変更できるようになり、汎用性を高めることができる。また、複数の車載機器を容易に取り付けることができ、車載機器の搭載性をさらに改善できる。
複数の孔の配置は、例えばホールパターンの一部と一致するレイアウト(部分一致)であってもよいし、ホールパターンの全部と一致するレイアウト(完全一致)であってもよい。複数の孔の配置をホールパターンに対応させることで、サイドレールのホールパターンに適合する車載機器をバッテリ用ブラケットに取り付けることが可能となる。したがって、車載機器の取り付けに係る互換性を維持でき、ユーザビリティ(車両ユーザにとっての使い勝手)を高めることができる。
このような孔の配置により、車両用バッテリパックが装備される車両と装備されない車両との間で、車長方向における車載機器の取り付け位置をほぼ同一にすることができる。
このような配列ピッチの設定により、車載機器の取り付けに係るある程度の互換性を維持することができ、ユーザビリティを高めることができる。
このように、対向板に凹凸を設けてその凸部に複数の孔を穿孔することで、対向板の板厚を薄くすることができ、軽量化を図りつつ耐側突強度を確保できる。また、凸部に孔を設けることで、孔に挿通される締結具と車両用バッテリパックとの距離が取りやすくなり、締結具との接触による車両用バッテリパックの変形や破損を防止できる。
このように、空洞を有する押出材を対向板として用いることで、空洞部分を側突に対するクラッシャブルゾーンとして機能させることができ、軽量化を図りつつ耐側突強度を確保できる。また、複数の孔を空洞の内側から車幅方向外側に向かって貫通させることで、車載機器と車両用バッテリパックとの距離を取ることができ、車両用バッテリパックの変形や破損を防止できる。
これにより、上記(1)と同様に、側突時における車両用バッテリパックの保護性能を高めつつ、車載機器の搭載性を改善でき、かつ、支持装置の重量増加を抑制できる。
このような筐体が搭載された電動トラックによれば、筐体がサイドレールに搭載される場合と比べて、筐体の充電口を車幅方向外側に容易に配置できる。これにより、所定位置に筐体を配置するための専用のブラケットをサイドレールから延設しなくても、筐体を所定位置に配置することが可能となるため、部品点数の削減や構造の簡素化を図りつつ、充電口への給電作業性を確保できる。
このようなセンサが搭載された電動トラックによれば、センサがサイドレールに搭載される場合と比べて、センサを車幅方向外側に容易に配置できる。これにより、所定位置にセンサを配置するための専用のブラケットをサイドレールから延設しなくても、センサを所定位置に配置することが可能となるため、部品点数の削減や構造の簡素化を図りつつ、センサの検知範囲を適切に設定できる。
前記架装装置には、例えばCIB(Charge Inlet Box)装置、巻き込み防止等のために設けられる車両側方物体検出用センサ(レーダー、カメラ)、冷蔵冷凍装置、発電装置、照明装置、給水装置、シュレッダー装置、廃棄物貯留装置、クレーン装置等が含まれうる。また、前記付随装置には、モータ、コンプレッサ、ポンプ、配線材、配管材、ツールボックス、補機等が含まれうる。これらの架装装置、付随装置をバッテリ側ブラケットに搭載できるようにすることで、例えば車両用バッテリパックが搭載されない既存の車両と同じ架装装置、付随装置を、ほぼ同じ位置に取り付けることができ、車両の利便性やユーザビリティをさらに高めることができる。
[1-1.全体構成]
図1に示すように、第一実施形態に係る車両用バッテリパックの支持装置1(以下、単に支持装置1ともいう)は、ラダーフレーム2を備えた電動トラック(車両)3に搭載されている。電動トラック3は、駆動用のバッテリパック4(車両用バッテリパック)の電力を図示しないモータに供給することで走行する電動車両(電気自動車、ハイブリッド車)である。
一対のサイドレール21は、車幅方向D2に互いに離間して配置される。各サイドレール21は、車長方向D1及び車高方向D3に沿う板状のウェブ部の上縁及び下縁から、一対の板状のフランジ部が車幅方向D2の内側に向けて延出するチャネル形状(断面U字状)をなす。
複数のクロスメンバ22は、車長方向D1に互いに離間して配置される。ここでは、バッテリパック4と車高方向D3において重なる位置、及びバッテリパック4よりも後方の位置の二か所にそれぞれ配置された二つのクロスメンバ22を例示する。
バッテリ側ブラケット5の対向板51(ウェブ部71)には、パターン状開口部9が設けられる。パターン状開口部9とは、所定のパターンで配置された複数の孔95が形成された部位であり、車載機器10の取付先となる部位である。ここでいう「所定のパターン」とは「少なくとも一つ以上の孔95を持つ平面図形を隙間なく敷き詰めることで形成される孔95の配列形状」を含むパターンを意味する。「所定のパターン」には、周期的な配列形状を含むパターンだけでなく、非周期的な配列形状を含むパターンも含まれる。
図5に示すように、溶接ボルト91は、対向板51に溶接された頭部92と、頭部92から外側に突出したネジ部93とを有する。詳細にいえば、溶接ボルト91は、バッテリ側ブラケット5の対向板51(ウェブ部71)を貫通する孔95に対し、ネジ部93が車幅方向D2の内側から挿通された状態で、対向板51に固定されている。
溶接ボルト91のネジ部93は、車載機器10(又はそのブラケット等)に形成された貫通孔(図示略)に挿通されたうえで、ナット14と締結される。これにより、溶接ボルト91を含むパターン状開口部9に車載機器10が取り付けられる。
溶接ナット94は、車載機器10(又はそのブラケット等)に形成された貫通孔(図示略)に車幅方向D2の外側から挿通されたボルト15と締結される。これにより、溶接ナット94を含むパターン状開口部9に車載機器10が取り付けられる。なお、溶接ナット94に締結されるボルト15は、バッテリパック4との干渉防止のために、ネジ部の長さ寸法Lがバッテリ側面41と対向板51との距離(隙間)Sよりも十分に短く設定される(L<S)。
センサ13は、例えば、電動トラック3のブラインドスポット内に存在する物体を検知してドライバに知らせる技術(いわゆる車両側方物体検出用センサ)に適用されるレーダーやカメラである。センサ13は、ブラインドスポットが検知範囲となる所定位置に設けられる。
(1)第一実施形態の支持装置1によれば、バッテリ側ブラケット5に車載機器10を搭載するパターン状開口部9が設けられるため、側突時に車幅方向D2の外側から入力される衝撃荷重が、バッテリ側ブラケット5に入力されるよりも前に車載機器10に入力される。これにより、衝撃荷重の初期入力を、バッテリ側ブラケット5で吸収するよりも前に車載機器10で吸収できる。この結果、バッテリ側ブラケット5に伝達される衝撃荷重を低減できるため、バッテリ側ブラケット5を通じてバッテリパック4に伝達される衝撃荷重も低減できる。よって、側突時におけるバッテリパック4の保護性能を高められる。
第二実施形態に係る車両用バッテリパックの支持装置1は、バッテリ側ブラケット5の対向板51(ウェブ部71)の構成が第一実施形態とは異なる。
図7に示すように、対向板51(ウェブ部71)には、車幅方向D2の外側に突出する形状に形成される凸部52と、凸部52よりも車幅方向D2の内側に位置する凹部53とが設けられる。上記の複数の孔95は、凸部52に形成される。凸部52の突出形状は、折れ線状の断面形状を有するものであってもよいし、曲線状の断面形状を有するものであってもよい。図7に示す凸部52の突出形状は、対向板51(ウェブ部71)のうちフランジ部72に接続される面を基準として、車幅方向D2の外側に向かって台形状(または矩形状)に突出した断面形状を有している。
図10に示すように、溶接ボルト91は、対向板51に溶接された頭部92と、頭部92から外側に突出したネジ部93とを有する。詳細にいえば、溶接ボルト91は、バッテリ側ブラケット5の対向板51(ウェブ部71)を貫通する孔95に対し、ネジ部93が車幅方向D2の内側から挿通された状態で、対向板51に固定されている。好ましくは、溶接ボルト91の頭部92の高さHが、図6中に示す凸部52の突出寸法Pよりも小さい寸法に設定される(H<P)。これにより、車両側突時に溶接ボルト91の頭部92とバッテリパック4とが干渉しにくくなる。
溶接ボルト91のネジ部93は、車載機器10(又はそのブラケット等)に形成された貫通孔(図示略)に挿通されたうえで、ナット14と締結される。これにより、溶接ボルト91を含むパターン状開口部9に車載機器10が取り付けられる。
溶接ナット94は、車載機器10(又はそのブラケット等)に形成された貫通孔(図示略)に車幅方向D2の外側から挿通されたボルト15と締結される。これにより、溶接ナット94を含むパターン状開口部9に車載機器10が取り付けられる。なお、溶接ナット94に締結されるボルト15は、バッテリパック4との干渉防止のために、ネジ部の長さ寸法Lがバッテリ側面41と対向板51との距離(隙間)Sよりも十分に短く設定される(L<S)。好ましくは、溶接ナット94の厚みTが、図7中に示す凸部52の突出寸法Pよりも小さい寸法に設定される(T<P)。これにより、車両側突時に溶接ナット94とバッテリパック4とが干渉しにくくなる。なお、ボルト15のネジ部の長さ寸法Lについても、溶接ナット94と螺合しうる長さで、できるだけ短い寸法に設定することが望ましい。
第三実施形態に係る車両用バッテリパックの支持装置1は、バッテリ側ブラケット5の対向板51(ウェブ部71)の構成が第一実施形態及び第二実施形態とは異なる。
図14に示すように、対向板51(ウェブ部71)は、内部に空洞57を有する押出形状に形成される。この空洞57は、バッテリ側ブラケット5(エンドクロスメンバ7)における車幅方向D2の外端部全体をカバーするように形成され、側突時におけるクラッシャブルゾーンとして機能する。空洞57を囲む周壁の断面形状は、好ましくは閉断面形状とされ、より好ましくは多角形状(例えば、矩形状や台形状)とされる。空洞57の延在方向(押出方向)は、車長方向D1に沿った方向とされる。空洞57の数は、一つでもよいし複数でもよい。また、対向板51の組成は不問であり、例えばアルミニウム合金、マグネシウム合金、鋼材、セラミックス、合成樹脂等を用いることができる。本実施形態の対向板51は、成形性や重量、コストの面で有利なアルミニウム合金の押出成形材(アルミ押出材)からなる。
図15に示すように、溶接ボルト91は、プレート58に溶接された頭部92と、頭部92から外側に突出したネジ部93とを有する。詳細にいえば、溶接ボルト91は、プレート孔59に対してネジ部93が車幅方向D2の内側から挿通された状態で、プレート58に溶接固定される。また、このプレート58は、孔95に対してネジ部93が車幅方向D2の内側から挿通されるように、空洞57の内部に取り付けられる。
溶接ボルト91のネジ部93は、車載機器10(又はそのブラケット等)に形成された貫通孔(図示略)に挿通されたうえで、ナット14と締結される。これにより、パターン状開口部9に車載機器10が取り付けられる。
溶接ナット94は、車載機器10(又はそのブラケット等)に形成された貫通孔(図示略)に車幅方向D2の外側から挿通されたボルト15と締結される。これにより、溶接ナット94を含むパターン状開口部9に車載機器10が取り付けられる。なお、溶接ナット94に締結されるボルト15は、ネジ部の長さ寸法Lが空洞57の内法寸法(隙間)Sよりも十分に短く設定される(L<S)。
上記の実施形態、第二実施形態、第三実施形態に係るバッテリ側ブラケット5の構成は一例である。バッテリ側ブラケット5は、少なくとも、バッテリ側面41と対向する対向板51を有するとともにバッテリパック4を収容する形状であればよく、上記のエンドクロスメンバ7及びメインブラケット8以外の部材で形成されてもよい。
フレーム側ブラケット6の構成、配置及び個数も、上記の例示に限定されない。
パターン状開口部9に搭載される車載機器10としては、上記の筐体12及びセンサ13に限らず、電動トラック3に搭載される様々な機器を採用できる。例えば、車載機器10は、電動トラック3の補機用の低電圧バッテリ(図示略)を含んでもよい。車載機器10がこのような低電圧バッテリを含む場合も、支持装置1及び電動トラック3によれば、上記の第一、第二、第三実施形態と同様に、側突時におけるバッテリパック4の保護性能を高めつつ、車載機器10の搭載性を確保できる。
なお、支持装置1の適用対象は、上記の電動トラック3に限定されない。支持装置1は、ラダーフレーム2を備える様々な車両に適用可能である。
2 ラダーフレーム
3 電動トラック(車両)
4 バッテリパック(車両用バッテリパック)
5 バッテリ側ブラケット
6 フレーム側ブラケット
7 エンドクロスメンバ
8 メインブラケット
9 パターン状開口部
10 車載機器
11 充電口
12 筐体
13 センサ
14 ナット
15 ボルト
21 サイドレール
22 クロスメンバ
23 ウェブ面
24 ホールパターン
41 バッテリ側面
42 前面
43 後面
51 対向板
52 凸部
53 凹部
54 第一凸部
55 第二凸部
56 第三凸部
57 空洞
58 プレート
59 プレート孔
71 ウェブ部
72 フランジ部
81 ウェブ部
82 フランジ部
91 溶接ボルト
92 頭部
93 ネジ部
94 溶接ナット
95 孔
Claims (13)
- 車両のラダーフレームを構成するサイドレールの下方に搭載され、車幅方向外側にそれぞれ向く一対のバッテリ側面を有し、前記バッテリ側面が前記サイドレールよりも車幅方向外側に位置する車両用バッテリパックの支持装置であって、
前記バッテリ側面と対向する対向板を有し、前記車両用バッテリパックを収容するバッテリ側ブラケットと、
前記バッテリ側ブラケットと前記サイドレールとを連結するフレーム側ブラケットと、
前記バッテリ側ブラケットの前記対向板において、複数の孔を形成されるとともに前記孔を介して車載機器を前記バッテリ側ブラケットに搭載させ、かつ前記複数の孔を所定パターンで配置されたパターン状開口部と、を含む
ことを特徴とする、車両用バッテリパックの支持装置。 - 前記複数の孔が、前記バッテリ側ブラケットの側面視にて左右対称に配置される
ことを特徴とする、請求項1に記載の車両用バッテリパックの支持装置。 - 前記複数の孔が、前記バッテリ側ブラケットの側面視にて上下対称に配置される
ことを特徴とする、請求項1又は2に記載の車両用バッテリパックの支持装置。 - 前記複数の孔が、平面格子状に配置される
ことを特徴とする、請求項1~3の何れか一項に記載の車両用バッテリパックの支持装置。 - 前記サイドレールが、ウェブ面に形成されたホールパターンを有し、
前記複数の孔の配置が、前記ホールパターンに対応する
ことを特徴とする、請求項1~4の何れか一項に記載の車両用バッテリパックの支持装置。 - 前記複数の孔の配置が、前記サイドレールのウェブ面のうち、前記車両用バッテリパックの直上方に位置する部位に形成された前記ホールパターンに対応する
ことを特徴とする、請求項5に記載の車両用バッテリパックの支持装置。 - 前記複数の孔の配列ピッチが、前記ホールパターンの配列ピッチの整数倍に設定される
ことを特徴とする、請求項5又は6に記載の車両用バッテリパックの支持装置。 - 前記対向板が、車幅方向外側に突出するとともに前記複数の孔が穿孔される凸部と前記凸部よりも車幅方向内側に位置する凹部とを交互に配置してなる波状に形成される
ことを特徴とする、請求項1~7の何れか一項に記載の車両用バッテリパックの支持装置。 - 前記対向板が、車長方向に伸びた形状の空洞を有する押出材であり、
前記複数の孔が、前記空洞から車幅方向外側に向かって前記対向板を貫通するように設けられる
ことを特徴とする、請求項1~8の何れか一項に記載の車両用バッテリパックの支持装置。 - 請求項1~9のいずれか一項に記載の車両用バッテリパックの支持装置を含む
ことを特徴とする、電動トラック。 - 前記車載機器は、前記車両用バッテリパックに外部から給電するための充電口が設けられた筐体を含む
ことを特徴とする、請求項10に記載の電動トラック。 - 前記車載機器は、車幅方向外側の物体を検知するセンサを含む
ことを特徴とする、請求項10又は11に記載の電動トラック。 - 前記車載機器は、前記車両に架装される架装装置又は前記架装装置の付随装置を含む
ことを特徴とする、請求項10~12の何れか一項に記載の電動トラック。
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US10493837B1 (en) * | 2018-10-11 | 2019-12-03 | Paccar Inc | Chassis mounted assemblies for electric or hybrid vehicles |
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CN204323022U (zh) * | 2014-11-17 | 2015-05-13 | 比亚迪股份有限公司 | 碰撞传感器、碰撞检测装置、防撞结构和电动车 |
JP2016113063A (ja) | 2014-12-16 | 2016-06-23 | ダイムラー・アクチェンゲゼルシャフトDaimler AG | バッテリボックスの保持構造 |
CN208028111U (zh) * | 2018-03-01 | 2018-10-30 | 嘉兴泽通新能源科技有限公司 | 一种底盘集成式动力电池箱 |
US10493837B1 (en) * | 2018-10-11 | 2019-12-03 | Paccar Inc | Chassis mounted assemblies for electric or hybrid vehicles |
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JP2023006069A (ja) | 2023-01-18 |
CN117580723A (zh) | 2024-02-20 |
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