WO2021220027A1 - 電気自動車のフロア構造 - Google Patents
電気自動車のフロア構造 Download PDFInfo
- Publication number
- WO2021220027A1 WO2021220027A1 PCT/IB2020/000408 IB2020000408W WO2021220027A1 WO 2021220027 A1 WO2021220027 A1 WO 2021220027A1 IB 2020000408 W IB2020000408 W IB 2020000408W WO 2021220027 A1 WO2021220027 A1 WO 2021220027A1
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- WO
- WIPO (PCT)
- Prior art keywords
- panel
- battery unit
- floor structure
- cooling water
- floor
- Prior art date
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62D—MOTOR VEHICLES; TRAILERS
- B62D25/00—Superstructure or monocoque structure sub-units; Parts or details thereof not otherwise provided for
- B62D25/20—Floors or bottom sub-units
- B62D25/2072—Floor protection, e.g. from corrosion or scratching
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- 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
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R13/00—Elements for body-finishing, identifying, or decorating; Arrangements or adaptations for advertising purposes
- B60R13/08—Insulating elements, e.g. for sound insulation
- B60R13/0861—Insulating elements, e.g. for sound insulation for covering undersurfaces of vehicles, e.g. wheel houses
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62D—MOTOR VEHICLES; TRAILERS
- B62D35/00—Vehicle bodies characterised by streamlining
- B62D35/02—Streamlining the undersurfaces
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- 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
- B60K2001/003—Arrangement or mounting of electrical propulsion units with means for cooling the electrical propulsion units
- B60K2001/005—Arrangement or mounting of electrical propulsion units with means for cooling the electrical propulsion units the electric storage means
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- 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
Definitions
- the present invention relates to a floor structure [a floor structure of an electric vehicle] of an electric vehicle.
- Patent Document 1 discloses the floor structure of a battery electric vehicle (BEV).
- the floor structure includes a battery module arranged between the front wheels and wheels under the floor of the passenger compartment, and a GFRP underfloor panel that covers the entire bottom surface of the battery module from below. It is disclosed that the undercover can prevent the curb [road edge stone] and the convex part [bump] of the road surface from directly hitting the battery unit. It is also disclosed that the undercover can prevent the bolts that fix the battery unit to the vehicle body from falling. Further, it is disclosed that the undercover can also rectify the airflow under the vehicle floor.
- an object of the present invention is to provide a floor structure of an electric vehicle capable of improving the soundproofing under the floor and reliably protecting the battery unit arranged under the floor.
- the floor structure of the electric vehicle includes a battery unit arranged between the front wheels and wheels under the floor of the passenger compartment, and an underfloor panel that covers the entire bottom surface of the battery unit from below.
- the underfloor panel includes a central panel made of a sound absorbing material arranged in the center in the width direction and in the center in the front-rear direction of the electric vehicle, and a peripheral panel made of a high-strength material arranged around the central panel. I have.
- the sound absorption [noise absorption] by the central panel and the sound insulation [noise shielding] by the peripheral panels can improve the soundproofing [noise insulation], and the underfloor panel can reliably protect the battery unit.
- FIG. 1 is a perspective view of the floor structure according to the embodiment as viewed from below.
- FIG. 2 is a perspective view of the underfloor panel having the floor structure as viewed from above.
- FIG. 3 is a side sectional view of the floor structure.
- FIG. 4 is an enlarged cross-sectional view of the floor structure.
- the electric vehicle [electric vehicle] of the present embodiment does not have an internal combustion engine, consumes the power stored in the battery unit 1, and has two motors mounted on the front and rear of the battery unit 1 (shown in the figure). It is a battery-electric vehicle (BEV) that drives four wheels (front wheel FW and rear wheel RW) with four wheels. At the time of deceleration of this vehicle [vehicle], the motor regenerates power generation, and the battery unit 1 is charged by the generated power. The battery unit 1 is also charged by electric power supplied from the outside of the vehicle.
- BEV battery-electric vehicle
- the cruising range of the BEV is determined by the electric power stored in the battery unit 1 (and the regenerated electric power). Therefore, it is required to mount the battery unit 1 having a larger charging capacity.
- the larger the charging capacity the larger the volume of the battery unit 1. Therefore, the BEV battery unit 1 is mounted on the vehicle so as to occupy the entire underfloor of the passenger compartment [passenger compartment]. More specifically, the battery unit 1 is mounted between the front wheel FW and the rear wheel RW (front wheel house and rear wheel house) and between the pair of side sills 2.
- the battery unit 1 occupies a range between the rear end of the front wheel FW (front wheel house) and the front end of the rear wheel RW (rear wheel house) and between the pair of side sills 2. Since the battery unit 1 has a heavy weight per unit volume, such a mounting position of the battery unit 1 lowers the position of the center of gravity of the vehicle and improves the kinetic performance of the vehicle.
- the battery unit 1 has a case 1c made of an aluminum alloy, and a large number of battery modules 1m containing a plurality of battery cells are mounted inside the case 1c. Peripheral devices related to charging / discharging of the battery module 1 m are also built in the case 1c. Further, inside the case 1c, a beam material [beam member] 1s that supports the battery module 1m is also attached while ensuring the strength and rigidity of the case 1c. The bottom of the case 1c is closed by a plurality of bottom panels [bottom panels] 1p.
- the bottom panel 1p is made of extruded aluminum, and the cross-sectional shape perpendicular to the vehicle's front-rear direction [longitudinal direction] (horizontal direction in FIG. 3) does not change.
- the bottom panel 1p has the same length as the front-rear length [longitudinal length] of the battery unit 1.
- the bottom panels 1p are arranged in parallel in the width direction [lateral direction] (left-right direction in FIG. 4) of the vehicle and attached to the case 1c.
- Each bottom panel 1p has a double bottom structure [double bottom structure] composed of a top plate [top plate] 1t and a bottom plate [bottom plate] 1b. That is, a double bottom structure is provided at the bottom of the battery unit 1. Inside the double bottom structure, a cooling water circulation pipe [coolant circulation pipe] 1f is provided. As described above, since the bottom panel 1p is an extruded aluminum material, the cooling water circulation pipe 1f is integrally formed with the top plate 1t. Further, the width of the cooling water circulation pipe 1f is widened as it approaches the top plate 1t. Therefore, the cooling water flowing inside the cooling water circulation pipe 1f can efficiently absorb the heat of the battery modules 1m arranged on the top plate 1t.
- such a shape of the cooling water circulation pipe 1f imparts strength and rigidity to the cooling water circulation pipe 1f itself, and also imparts strength and rigidity to the bottom panel 1p. Further, a gap [clearance] is formed between the cooling water circulation pipe 1f and the bottom plate 1b. Therefore, even if the bottom panel 1p is impacted from below by a curb or a convex portion of the road surface and the bottom plate 1b is deformed, the cooling water circulation pipe 1f can be protected if the bottom plate 1b does not come into contact with the cooling water circulation pipe 1f.
- the double bottom structure of the bottom panel 1p also functions as a sound insulation structure that prevents noise from being transmitted from under the floor to the passenger compartment.
- a vertical wall [vertical walls] 1w connecting the top plate 1t and the bottom plate 1b is also integrally provided.
- one bottom panel 1p is provided with three cooling water circulation pipes 1f and three vertical walls 1w.
- the vertical wall 1w also imparts strength and rigidity to the bottom panel 1p and prevents contact between the bottom plate 1b and the cooling water circulation pipe 1f due to an impact from below.
- resin or metal for connecting to the ends of other cooling water circulation pipes 1f so that all the cooling water circulation pipes 1f form a cooling water circulation path.
- a connecting pipe (not shown) is attached. That is, a plurality of connecting pipes are arranged at the front end and the rear end of the bottom of the battery unit 1.
- the cooling water circulation pipes 1f of the plurality of bottom panels 1p are arranged in the width direction at regular intervals (see FIG. 4). The positional relationship between the cooling water circulation pipe 1f and the vertical wall 1w and the underfloor panel 3 described later will be described in detail later.
- the battery unit 1 of the present embodiment is attached to the vehicle body from below and is not supported from below. Therefore, it is important to improve the strength and rigidity of the floor portion (bottom panel 1p) of the battery unit 1 that supports a large number of heavy battery modules 1 m from below. Further, as described above, in order to protect the battery module 1 m from an impact from below, it is important to improve the strength and rigidity of the floor portion (bottom panel 1p) of the battery unit 1.
- an underfloor panel 3 that covers the entire bottom surface of the battery unit 1 from below is provided mainly as a soundproofing member.
- the underfloor panel 3 is attached to the bottom surface of the battery unit 1 (bottom plate 1b of the bottom panel 1p) by a resin clip.
- the underfloor panel 3 also functions as a protective member for the battery unit 1 and also as an aerodynamic member for rectifying the air flow under the vehicle floor.
- the underfloor panel 3 has a felt center panel [center panel] 3C arranged in the center in both the width direction and the front-rear direction, and a fiber reinforced plastic (FRP) periphery arranged around the center panel 3C. It consists of a panel [surrounding panel] (3F, 3R, 3S).
- the FRP fiber of the peripheral panel (3F, 3R, 3S) is glass fiber, and the matrix resin thereof is polypropylene (PP).
- the peripheral panels (3F, 3R, 3S) further include a front panel [front panel] 3F arranged in front of the center panel 3C, a rear panel [rear panel] 3R arranged behind the center panel 3C, and the like. It is composed of side panels [side panels] 3S arranged on both sides of the central panel 3C.
- the front panel 3F, the rear panel 3R, and the side panel 3S are formed by injection molding.
- the central panel 3C formed of the water resistant felt is formed by pressing the felt (while applying heat as necessary).
- the felt central panel 3C which has a large number of minute spaces inside, mainly functions as a sound absorbing member. Further, even if the gravel or the like jumped up by the wheels hits the central panel 3C, the felt central panel 3C serves as a cushion to reduce the generation of noise.
- the front panel 3F, the rear panel 3R, and the side panel 3S mainly function as sound insulating members.
- the side panel 3S is a single plate, but the front panel 3F and the rear panel 3R have a double panel structure including an inner panel [inner panel] 3i and an outer panel [outer panel] 3o, respectively. (See FIG. 4).
- the inner panel 3i and the outer panel 3o are injection-molded and then integrated with an adhesive.
- a plurality of beads 3b are formed in a large part (at least a part) of the inner panel 3i in order to give strength and rigidity to the front panel 3F and the rear panel 3R.
- the bead 3b bulges on the side opposite to the outer panel 3o and extends in the front-rear direction. Therefore, the inner panel 3i is formed in a wavy shape by the plurality of beads 3b.
- a short bead is also formed in the width direction between the adjacent beads 3b in order to improve the strength and rigidity. Further, the bead 3b forms a space between the inner panel 3i and the outer panel 3o (and between the inner panel 3i and the bottom panel 1p). It is known that the sound insulation of a double panel (double wall) structure with a space between the two panels is superior to the sound insulation of a structure in which two panels are interviewed on the entire surface. There is.
- the bottom surface of the outer panel 3o is basically formed flat to rectify the airflow under the vehicle floor.
- dimples are formed at the above-mentioned resin clip attachment position on the outer panel 3o.
- Dimple holes are also formed in the inner panel 3i at the resin clip attachment position.
- the inner panel 3i and the outer panel 3o (that is, the front panel 3F and the rear panel 3R) bonded to each other overlap the edge with the edge of the center panel 3C and the side panel 3S via the dimples of the outer panel 3o. It is wrapped and attached to the bottom plate 1b of the bottom panel 1p.
- the front panel 3F and the rear panel 3R have a double panel structure, they are excellent in sound insulation performance that blocks gas propagating sound from the outside of the vehicle to the vehicle interior. Further, the front panel 3F and the rear panel 3R are arranged in the vicinity of the wheels (front wheel FW and rear wheel RW). The gravel and rainwater splashed up by the wheels hit the underfloor panel 3 vigorously to generate noise, but the gravel hits mainly the front panel 3F and the rear panel 3R. At this time, since the front panel 3F and the rear panel 3R have a double panel structure having a high sound insulation effect, such noise is difficult to be transmitted to the vehicle interior.
- the underfloor panel 3 functions not only as a soundproofing member but also as a protective member for the battery unit 1.
- a curb or a convex portion of the road surface collides with the bottom of the vehicle, it collides with the underfloor panel 3 before the bottom panel 1p of the battery unit 1, and the underfloor panel 3 collides with the battery unit 1 (bottom panel 1p).
- the bottom panel 1p itself has a collision protection structure, but is more reliably protected by the underfloor panel 3.
- the impact on the bottom of the vehicle occurs with the suspension stroke immediately after the wheel passes through the convex part of the road surface (rides on the curb).
- the impact on the bottom of the vehicle also occurs with the suspension stroke immediately after the wheels fall into the recesses on the road surface (get off the curb).
- Such interference with the convex portion of the road surface may occur regardless of whether the vehicle is moving forward or backward. Therefore, the impact is input to the range immediately after the front wheel FW and the range immediately before the rear wheel RW, and in the present embodiment, the front panel 3F and the rear panel 3R having a double panel structure are arranged at this position. .. Therefore, according to the present embodiment, the battery unit 1 (particularly, the cooling water circulation pipe 1f provided at the bottom thereof) can be protected more reliably.
- a plurality of connecting pipes for connecting the cooling water circulation pipe 1f are arranged at the front end and the rear end of the bottom portion of the battery unit 1. Since the front panel 3F and the rear panel 3R also cover these connecting pipes from below, these connecting pipes can also be protected. Since the connecting pipe is provided outside the double bottom structure of the bottom panel 1p, it is important to protect the connecting pipe by the front panel 3F and the rear panel 3R.
- the side panel 3S may come into contact with the road surface. Therefore, the battery unit 1 (bottom panel 1p) can be protected by providing the side panel 3S in a range close to the side surface of the vehicle even in the center between the front wheel FW and the rear wheel RW.
- the bottom surface of the side panel 3S is also basically formed to be flat, and rectifies the airflow under the vehicle floor. Dimples are also formed at the resin clip attachment position of the side panel 3S, and the side panel 3S is attached to the bottom plate 1b of the bottom panel 1p via the dimples.
- the side panel 3S is made of GFRP because the possibility of contact with the convex portion of the road surface is lower than that of the front panel 3F and the rear panel 3R.
- ribs are formed on its inner surface (upper surface) so as to connect dimples (see FIG. 2).
- a central panel 3C made of water-resistant felt as a sound-absorbing member is arranged in this portion with an emphasis on soundproofing.
- the bottom surface of the central panel 3C is also basically formed to be flat, and rectifies the airflow under the vehicle floor. Dimples are also formed at the resin clip attachment position of the central panel 3C, and the central panel 3C is attached to the bottom plate 1b of the bottom panel 1p via the peripheral edge thereof and the dimples.
- the peripheral resin clip is covered by the front panel 3F, the rear panel 3R and the side panel 3S. Through holes for drainage are formed in the central panel 3C, the front panel 3F, the rear panel 3R, and the side panel 3S.
- the positional relationship between the front panel 3F (rear panel 3R) and the bottom panel 1p is set so that the impact on the battery unit 1 (bottom panel 1p) is reduced even in such a case. There is.
- the load input to the outer panel 3o of the front panel 3F (or the rear panel 3R) is input to the inner panel 3i, and then is input to the bottom panel 1p via the upper surface of the bead 3b. Therefore, in the present embodiment, as shown in FIG. 4, the bead 3b extending in the front-rear direction does not overlap with the cooling water circulation pipe 1f extending in the front-rear direction in the plan view (or bottom view). With this structure, even if the bottom plate 1b of the bottom panel 1p is deformed upward by the load input from the bead 3b, the contact between the bottom plate 1b and the cooling water circulation pipe 1f is avoided. As a result, damage to the cooling water circulation pipe 1f, that is, damage to the cooling system of the battery unit 1 can be avoided.
- a vertical wall 1w is also provided inside the double panel structure of the bottom panel 1p.
- the bead 3b is arranged so that the extension surface of the vertical side wall [raised side wall (s)] 3w extending in the front-rear direction does not intersect with the vertical wall 1w. ing.
- the load input from the bead 3b to the bottom plate 1b is input particularly along the erection side wall 3w of the bead 3b. Therefore, the beads 3b are arranged so that the above-mentioned extension surface does not intersect with the vertical wall 1w so that this load is not directly input to the vertical wall 1w.
- the load may be directly input to the vertical wall 1w and the vertical wall 1w may buckle. In this case, the deformation of the bottom plate 1b cannot be effectively prevented.
- a force for lifting the entire bottom plate 1b acts on the battery modules 1m arranged in an orderly manner inside the battery unit 1. Therefore, by arranging the beads 3b so that the above-mentioned extension surface does not intersect the vertical wall 1w, damage to the battery unit 1 can be avoided.
- the underfloor panel 3 covering the entire bottom surface of the battery unit 1 is a central panel 3C made of a sound absorbing material (felt) arranged in the center and a high-strength material (fiber) arranged around the central panel 3C. It is equipped with a peripheral panel (3F, 3R, 3S) made of (reinforced resin).
- the central panel 3C made of a sound absorbing material absorbs noise from under the floor outside the vehicle to the interior of the vehicle to reduce noise inside the vehicle.
- Peripheral panels (3F, 3R, 3S) made of high-strength material arranged around the central panel 3C, which may interfere with the convex parts of the road surface, function as sound insulation materials and go from under the floor outside the vehicle to the passenger compartment. Prevents the transmission of noise and reduces the noise inside the vehicle.
- a member having high strength can function as a sound insulating material for preventing the transmission of noise.
- the peripheral panels (3F, 3R, 3S) interfere with the convex portions of the road surface, they are made of high-strength material and are not easily damaged, and the battery unit 1 can be protected. Of course, the entire underfloor panel 3 can rectify the airflow under the vehicle floor.
- the sound absorbing member forming the central panel 3C is felt. In the case of felt, even if gravel or the like jumped up by the wheels hits the central panel 3C, the central panel 3C made of felt acts as a cushion to reduce the generation of noise.
- the sound absorbing member forming the central panel 3C is preferably felt, but is not limited to felt.
- the sound absorbing member is preferably formed of a porous material having a large number of minute spaces inside, and the central panel 3C may be an injection molded member using a foamed resin.
- the high-strength member forming the peripheral panels (3F, 3R, 3S) is GFRP.
- the high-strength member forming the peripheral panels (3F, 3R, 3S) is preferably FRP such as GFRP (glass fiber reinforced resin) or CFRP (carbon fiber reinforced resin), but is not limited to FRP.
- FRP such as GFRP (glass fiber reinforced resin) or CFRP (carbon fiber reinforced resin)
- CFRP carbon fiber reinforced resin
- the high-strength member that also functions as a sound insulating material a resin composite member is preferable in consideration of moldability and light weight.
- the peripheral panel (3F, 3R, 3S) may be a resin injection molded member in which a metal mesh is inserted.
- the peripheral panels (3F, 3R, 3S) may be made of different materials as long as they are made of high-strength members.
- the peripheral panels (3F, 3R, 3S) include a front panel 3F, a rear panel 3R, and a pair of side panels 3S, and the front panel 3F and the rear panel 3R are double, respectively. It has a panel structure. Since the front panel 3F and the rear panel 3R have a double panel structure, their sound insulation is excellent. Since gravel and the like that bounce off the wheels easily hit the front panel 3F and the rear panel 3R arranged in the vicinity thereof, the excellent sound insulation of the front panel 3F and the rear panel 3R is effective in reducing such noise. Is. In addition, the vicinity of the wheels tends to interfere with the convex portions of the road surface.
- the double panel structure of the front panel 3F and the rear panel 3R improves their strength and rigidity, so that damage to the front panel 3F and the rear panel 3R is more effective. Can be prevented. As a result, the battery unit 1 can be reliably protected.
- the inner panel 3i is formed in a wavy shape by the beads 3b, and the bottom surface of the outer panel 3o is formed flat. Therefore, the strength and rigidity of the front panel 3F and the rear panel 3R are further improved by the inner panel 3i on which the beads 3b are formed. Further, since the space is formed between the outer panel 3o and the bottom surface of the battery unit 1 (bottom panel 1p) by forming the bead 3b, this space further improves the soundproofing property. Further, since the bottom surface of the outer panel 3o is flat, the airflow under the vehicle floor can be effectively rectified.
- the bead 3b is arranged so as not to overlap the cooling water circulation pipe 1f of the battery unit 1 in a plan view, the load from the bead 3b to the bottom surface of the battery unit 1 due to interference with the convex portion of the road surface or the like is circulated in the cooling water. It is possible to avoid acting on the tube 1f. As a result, damage to the cooling water circulation pipe 1f, that is, damage to the cooling system of the battery unit 1 can be avoided.
- the cooling water circulation pipe 1f is arranged inside a double bottom structure (top plate 1t and bottom plate 1b) provided at the bottom of the battery unit 1.
- This double bottom structure further reduces noise from under the floor outside the vehicle to the passenger compartment.
- a vertical wall 1w is also provided inside the double bottom structure, and the extension surface of the vertical side wall 3w of the bead 3b does not intersect with the vertical wall 1w.
- the electric vehicle of the above embodiment is a battery electric vehicle (BEV), but may be a hybrid electric vehicle (HEV: including PHEV).
- HEV hybrid electric vehicle
- the layout of the battery unit 1 and the underfloor panel 3 described above does not hold.
- the HEV has a small internal combustion engine as a range extender mounted on the rear of the vehicle, the layout of the battery unit 1 and the underfloor panel 3 described above can be established.
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- Body Structure For Vehicles (AREA)
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Abstract
Description
1p (二重底構造の)底部パネル
1t (底部パネル1pの)天板
1b (底部パネル1pの)底板
1f 冷却水循環管
1w 縦壁
3 アンダーフロアパネル
3C 中央パネル
3S 側部パネル(周囲パネルの一部)
3F 前部パネル(周囲パネルの一部)
3R 後部パネル(周囲パネルの一部)
3i (二重パネル構造の)内側パネル
3o (二重パネル構造の)外側パネル
3b ビード
3w 立設側壁
FW 前輪
RW 後輪
Claims (4)
- 電気自動車のフロア構造であって、
車室床下の前輪及び後輪の間に配されたバッテリユニットと、
前記バッテリユニットの底面全体を下方から覆うアンダーフロアパネルと、を備えており、
前記アンダーフロアパネルが、当該アンダーフロアパネルにおける幅方向及び前後方向の双方の中央に配された吸音材料からなる中央パネルと、前記中央パネルの周囲に配された高強度材料からなる周囲パネルと、を備えている、フロア構造。 - 請求項1に記載のフロア構造であって、
前記周囲パネルが、前記中央パネルの前方に配置される前部パネル、前記中央パネルの後方に配置される後部パネル、及び、前記中央パネルの両側にそれぞれ配置される側部パネル、を備えており、
前記前部パネル及び前記後部パネルが、それぞれ、内側パネル及び外側パネルとからなる二重パネル構造を有している、フロア構造。 - 請求項2に記載のフロア構造であって、
前記内側パネルの少なくとも一部が前後方向に延在する前記外側パネルとは反対側に膨出されたビードによって波形状に形成され、かつ、前記外側パネルの底面が平坦に形成されており、
前記バッテリユニットが、その底部に前後方向に延在する冷却水循環管を備えており、
前記ビードは、平面視において前記冷却水循環管と重複しないように配置されている、フロア構造。 - 請求項3に記載のフロア構造であって、
前記冷却水循環管が、前記バッテリユニットの底部に設けられた二重底構造の内部に配されており、
前記二重底構造の内部に前後方向に延在する縦壁が設けられており、
前記ビードは、その立設側壁の延長面が前記縦壁と交差しないように配置されている、フロア構造。
Priority Applications (6)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2022518418A JP7329684B2 (ja) | 2020-04-28 | 2020-04-28 | 電気自動車のフロア構造 |
BR112022021812A BR112022021812A2 (pt) | 2020-04-28 | 2020-04-28 | Estrutura de piso de veículo elétrico |
EP20933538.9A EP4144619B1 (en) | 2020-04-28 | 2020-04-28 | Electric vehicle floor structure |
PCT/IB2020/000408 WO2021220027A1 (ja) | 2020-04-28 | 2020-04-28 | 電気自動車のフロア構造 |
CN202080100346.2A CN115485184A (zh) | 2020-04-28 | 2020-04-28 | 电动汽车的车底结构 |
US17/996,510 US11975601B2 (en) | 2020-04-28 | 2020-04-28 | Electric vehicle floor structure |
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EP (1) | EP4144619B1 (ja) |
JP (1) | JP7329684B2 (ja) |
CN (1) | CN115485184A (ja) |
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- 2020-04-28 WO PCT/IB2020/000408 patent/WO2021220027A1/ja unknown
- 2020-04-28 JP JP2022518418A patent/JP7329684B2/ja active Active
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JPWO2021220027A1 (ja) | 2021-11-04 |
EP4144619B1 (en) | 2024-04-03 |
US20230191886A1 (en) | 2023-06-22 |
CN115485184A (zh) | 2022-12-16 |
US11975601B2 (en) | 2024-05-07 |
JP7329684B2 (ja) | 2023-08-18 |
EP4144619A1 (en) | 2023-03-08 |
EP4144619A4 (en) | 2023-06-14 |
BR112022021812A2 (pt) | 2022-12-13 |
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