EP4334175A1 - Elektrofahrzeug - Google Patents
ElektrofahrzeugInfo
- Publication number
- EP4334175A1 EP4334175A1 EP21723239.6A EP21723239A EP4334175A1 EP 4334175 A1 EP4334175 A1 EP 4334175A1 EP 21723239 A EP21723239 A EP 21723239A EP 4334175 A1 EP4334175 A1 EP 4334175A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- electric motor
- electric vehicle
- motor module
- lever
- shock absorber
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R19/00—Wheel guards; Radiator guards, e.g. grilles; Obstruction removers; Fittings damping bouncing force in collisions
- B60R19/02—Bumpers, i.e. impact receiving or absorbing members for protecting vehicles or fending off blows from other vehicles or objects
- B60R19/24—Arrangements for mounting bumpers on vehicles
- B60R19/38—Arrangements for mounting bumpers on vehicles adjustably or movably mounted, e.g. horizontally displaceable for securing a space between parked vehicles
-
- 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
- B60L3/00—Electric devices on electrically-propelled vehicles for safety purposes; Monitoring operating variables, e.g. speed, deceleration or energy consumption
- B60L3/0007—Measures or means for preventing or attenuating collisions
-
- 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
- B62D21/15—Understructures, i.e. chassis frame on which a vehicle body may be mounted having impact absorbing means, e.g. a frame designed to permanently or temporarily change shape or dimension upon impact with another body
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R19/00—Wheel guards; Radiator guards, e.g. grilles; Obstruction removers; Fittings damping bouncing force in collisions
- B60R2019/002—Wheel guards
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R19/00—Wheel guards; Radiator guards, e.g. grilles; Obstruction removers; Fittings damping bouncing force in collisions
- B60R2019/007—Means for adjusting or regulating the crash absorption capacity of the vehicle, e.g. when detecting an impending collision
-
- 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
- B62D25/08—Front or rear portions
Definitions
- the invention relates to an electric vehicle with (a) a front axle and (b) a shock absorber.
- Electric vehicles are, in particular, vehicles in which the wheels are driven by electric motors.
- the wheels are driven exclusively by electric motors. In other words, there is no internal combustion engine that transfers torque to the wheels.
- shock absorbers are known to protect the passengers of electric vehicles from damage in the event of an accident. These shock absorbers include, for example, a bumper and a deformation structure that deforms when the electric vehicle impacts a rover. As a result, part of the kinetic energy of the impact can be absorbed at higher speeds, and all of it at lower speeds, which results in a low maximum force acting on the passengers. In contrast to vehicles with combustion engines, with electric motors it is also beneficial to protect the battery from damage in the event of an accident. The reason for this is, on the one hand, that the battery is a valuable component of the electric vehicle. On the other hand, a damaged battery can bolt. This is understood to mean that there is positive feedback in which damage to one part of the battery, usually due to the effect of heat, leads to other parts of the battery being damaged.
- the object of the invention is to propose an electric vehicle with an alternative shock absorber.
- the invention solves the problem by an electric vehicle with at least one shock absorber that has (i) at least one impact lever, which is in a normal position and is movable along a pivot path into an accident position, and (ii) at least
- I-fcOM/20 an energy absorber positioned in the pivot path such that the energy absorber deforms when the crash lever moves from the normal position to the crash position.
- shock absorber makes use of the special feature of an electric vehicle that the area in front of the passenger compartment, in which the engine is usually located in vehicles with combustion engines, is mostly largely unused. This area can therefore be used to accommodate the energy absorbers.
- an electric vehicle is understood to mean, in particular, a vehicle in which the drive torque on the wheels comes at least partially from an electric motor. It is particularly favorable when the electric vehicle is a purely electric vehicle in which none of the wheels is driven by another motor apart from an electric motor.
- the electric vehicle can be, for example, a passenger car, in particular with a hood in the front area, a bus, in particular with a steep vehicle front, or a transporter.
- Under the shock absorber is understood in particular a structure that absorbs kineti cal energy of the electric vehicle by deformation in the event of a rear-end collision in which the electric vehicle drives into a flinder.
- the energy absorber can be a component that is deformed by pressure in the event of an impact of the electric vehicle and/or a component that is deformed by train in the event of an impact.
- the energy absorber it is possible for the energy absorber to be deformed by compression only, deformed by traction only, or deformed by both compression and traction upon impact.
- the term “deformation element” could also be used.
- the normal position is understood to be the position in which the impact lever was not moved by a rear-end collision.
- the accident position is understood in particular as the position in which the impact lever is when the electric vehicle collides head-on with a solid stationary obstacle at a speed of 54 km/h.
- An electric motor module is understood to mean, in particular, an assembly that has at least one electric motor.
- the electric motor module preferably also includes a power electronics unit, by means of which the electric motor is supplied with electrical energy. It is then sufficient to supply the electric motor with voltage and a control signal that encodes the target speed of the electric motor, for example, so that the electric motor module automatically outputs the target speed.
- the shock absorber has at least one pivot bearing, so that the shock absorber can be pivoted about a pivot axis of the at least one pivot bearing.
- the pivot bearing can be, for example, a plain bearing or a roller bearing.
- the pivot axis preferably runs in the area of the front axle and/or along the front axle.
- the feature that the pivot axis runs in the area of the front axle means in particular that a distance between the pivot axis and a rotation axis through the front wheels is at most one fifth, in particular at most one tenth of the vehicle length.
- the shock absorber has at least one, in particular precisely one, cross bar which extends transversely to the longitudinal axis of the vehicle.
- a compensating straight line runs through the cross bar at an angle of 90° ⁇ 10° to the longitudinal axis of the vehicle.
- a cross bar is understood in particular as meaning a structure that runs transversely to the impact lever. It is possible, but not necessary, for the impact lever and the cross bar to be designed in one piece.
- the pivot axis preferably runs at least substantially horizontally. This means in particular that the pivot axis forms an angle of at most 15°, preferably at most 10°, with the horizontal plane.
- a cross bar width of the cross bar is at least 0.7 times, in particular at least 0.9 times, a vehicle width of the electric vehicle. If the front of the electric vehicle has two crossbars that connect to each other in their longitudinal directions, the crossbar width is the width of both crossbars together, i.e. the width from one end of a first crossbar to the other end of the second crossbar.
- the shock absorber (i) has a second impact lever which is in a normal position and is movable along a second pivot path to an accident position. It is possible, but not necessary, for the second impact lever to be connected to the first impact lever, for example by means of a coupling lever. It is favorable if the shock absorber (ii) has at least one second energy absorber, which is arranged in the second pivot path, so that the second energy absorber deforms when the second impact lever moves from the normal position into the accident position.
- the shock absorber can also have a second cross bar which is arranged on the second impact lever.
- the Querrigel are preferably arranged next to each other and close in their longitudinal direction of extension to each other.
- the impact levers preferably extend together over a crossbar width of at least 0.7 times, in particular 0.9 times, the width of the vehicle.
- the energy absorber has at least one compression deformation element.
- the compression deformation element preferably contains a pleated, honeycomb or cellular structure.
- the deformation element is constructed as an example of metal, in particular a metal foam, plastic or a composite fiber composite material. It is favorable if the energy absorber absorbs deformation energy of at least 150 kJ, in particular at least 200 kJ, when the electric vehicle impacts a rigid wall at a speed of 54 km/h.
- a lever angle between the cross bar, in particular the center of mass of the cross bar, and the front wheel axis of rotation of at least one front wheel on the one hand and the horizontal plane on the other hand is at least 10°, in particular at least 15° and at most 45°.
- imaginary axis is understood about which rotate the front wheels when driving the vehicle.
- the lever angle is too small, a collision of the vehicle with an obstacle will result in very large forces on the swivel bearing and rather small forces on the energy absorber, which is undesirable. If the lever angle is too large, the pivoting path is comparatively short, which is also undesirable. It is therefore favorable if the energy absorber does not have a constant energy absorption per distance, but has a progressively increasing energy absorption with an increasing degree of deformation.
- lever angle in the accident position is at least 70° greater than in the normal position.
- the lever angle in the accident position is preferably at least 85°, in particular at least 90°.
- the electric vehicle has (a) a first electric motor module having a first rotor with a first rotor axis of rotation and driving a first front wheel, and (b) a second electric motor module having a second rotor with a second rotor axis of rotation and driving the first front wheel.
- the first electric motor module and the second electric motor module are preferably connected to a first angle gearbox having a first output shaft.
- the electric motor modules are preferably arranged on different sides of the parting plane with respect to a vertical parting plane, which runs perpendicular to the longitudinal axis of the vehicle and runs through the output shaft axis of rotation of the bevel gear. This keeps the center of gravity of the electric vehicle low.
- the electric vehicle has (a) a third electric motor module that has a third rotor with a third rotor axis of rotation and drives a second front wheel, and (b) a fourth electric motor module that has a fourth rotor with a fourth rotor axis of rotation and that drives second front wheel having. It is favorable if the third electric motor module and the fourth electric motor module are connected to a second bevel gear.
- the second bevel gear has a second output shaft and the third electric motor module and the fourth electric motor module are preferably arranged on different sides of the vertical parting plane.
- the first electric motor module or the second electric motor module is fastened relative to the impact lever.
- the corresponding electric motor module moves when the impact lever moves and vice versa.
- the first electric motor module preferably differs from the second electric motor module in its number of poles.
- at least two electrical modules that act on the same bevel gear differ in their number of poles.
- a high number of poles results in a high torque at low rotational frequencies
- a low number of poles results in a high maximum achievable speed.
- At least two electric motor modules that are mounted on the second bevel gear preferably differ in their number of poles.
- the first rotor axis of rotation forms a motor position angle with an output shaft axis of rotation of the first drive shaft, which is preferably between 45° and 90°.
- a free end of the corresponding electric motor module i.e. the end that is not connected to the bevel gear, moves towards the vehicle’s center axis.
- the center line of the vehicle runs longitudinally through the center of mass of the electric vehicle. If the mounting angle is 90°, the 4 electrical modules are arranged in an H when viewed from above.
- An nth lever angle is formed between a rotor axis of rotation of the nth electric motor module and the horizontal plane.
- the first lever angle is preferably between 0 and 15°.
- the second lever angle and/or the fifth lever angle is 75° to 90°.
- the lever angles are determined in the normal position of the shock absorber.
- At least two electric motor modules of the electric vehicle are structurally identical. If the electric vehicle contains at least four electric motor modules, then at least two electric motor modules are structurally identical. It is possible, but not necessary, for all four electric motor modules to be identical.
- At least one electric motor module is preferably connected to the shock absorber, in particular the impact lever, in such a way that a movement of the impact lever causes a pivoting movement of the electric motor module about the output axis.
- the Win keltrieb preferably has a ring gear that is collinear to the output axis is arranged. If the impact lever then pivots, the electric motor module pivots about the axis of rotation of the ring gear, so that damage to the electric motor module can be avoided more easily.
- the bevel gears also generally roll off the ring gear when swiveling without being damaged.
- the impact lever is preferably attached to a housing of the bevel gear.
- the housing is rotatably mounted about the drive shaft axis of rotation.
- the output shaft axis of rotation preferably corresponds to the impact lever axis about which the impact lever pivots.
- the energy absorber is arranged adjacent to the wheel housing.
- the outer The upper quartile is the range from one edge of the EV to a vertical plane parallel to the vehicle's longitudinal axis.
- the feature that the energy absorber is at least predominantly located in this outer quartile means in particular that the center of gravity of the energy absorber is in the outer quartile.
- the electric vehicle has a rear axle shock absorber which (i) has a fender axle impact lever which is in a normal position and is positioned along a finter axle lever pivot path to a crash position, and (ii) a flint axle energy absorber disposed in the rear axle lever pivot path such that the energy absorber deforms as the crash lever moves from the normal position to the crash position .
- the electric vehicle has at least two electric motor modules which are coupled with their rotors in the axial direction and which drive the rear wheels which are fixed to the rear axle. It is possible, but not necessary, for the two electrical modules to be identical in construction. In particular, the electrical modules can differ in their number of poles.
- the electric vehicle has a second impact absorber in front of the passenger cell in the direction of travel, the second impact lever of which has a second lever pivot axis that differs from the pivot axis of the first impact absorber.
- a distance between the two pivot axes is at most 1 m.
- two front wheels it is possible, but not necessary, for two front wheels to be driven independently of each other by at least one electric motor module.
- the bevel gear drives the first front wheel and the second front wheel wheel drives and between the bevel gear and the front wheels, a differential gear is arranged.
- a bevel gear drives the first rear wheel and the second rear wheel and a differential gear is arranged between the bevel gear and the rear wheels.
- the bevel gear preferably has (a) a first housing part which is fixedly connected to a chassis of the electric vehicle, and (b) a second housing part which is fixedly connected to the first electric motor module and is guided and movably fastened to the first housing part. It is then possible for the first electric motor module to pivot relative to the chassis without the housing being deformed. This configuration is particularly favorable when the first electric motor module is fixed relative to the impact lever, ie moves when the impact lever moves. If an accident then occurs, the impact lever pivots and the electric motor module pivots relative to the first housing part, without the electric motor module having to suffer major damage.
- a pivot bearing is formed between the first housing part and the second housing part, which is designed to be so robust that it absorbs the forces that occur when the electric vehicle hits an obstacle head-on at speeds of up to 30 km/h, in particular 40 km/h , occur so that the electric motor module and/or the bevel gear are not damaged.
- a first electric motor module is axially coupled to a second electric motor module, and the second electric motor module is connected to the bevel gear for driving.
- the drive power can easily be increased by sequentially arranging electric motor modules.
- the electric vehicle preferably has a battery unit surrounded by a battery frame.
- the energy absorber is preferably supported at one end on the frame and/or on a center tunnel wall of a center tunnel.
- the electric vehicle has a center tunnel, which has a center tunnel wall and between the front axle and rear axle above a battery runs frame, has, wherein the center tunnel wall reinforces the battery frame.
- the central tunnel wall preferably has a profile structure, which increases the mechanical strength.
- the battery frame can have a corner frame node that is arranged in the power flow from the energy absorber to the chassis.
- the energy absorber is preferably supported on the corner frame node.
- Figure 1 is a perspective view of an electric vehicle according to the invention without a body
- FIG. 2 shows a view from above of the electric vehicle according to FIG. 1,
- FIG. 3 shows a side view of the electric vehicle according to FIG. 1, the impact lever being in its normal position in partial figure 3a and in its accident position in partial figure 3b,
- FIG. 4 shows a perspective view of an electric vehicle according to the invention without a body according to a second embodiment
- FIG. 5 shows a side view of the electric vehicle according to FIG. 4, the impact lever being in its normal position in partial figure 5a and in its accident position in partial figure 5b,
- FIG. 6 shows a perspective view of an electric vehicle according to the invention without a body according to a third embodiment, the impact lever being in its normal position in partial figure 6a and in its accident position in partial figure 6b,
- FIG. 7 is a perspective view of the electric vehicle according to FIG. 6, with the front impact lever being in its normal position in partial FIG Subfigure 7b in its accident position, and
- FIG. 8 shows a detailed view of four electric motor modules which are mounted on a cut-out angular gear for driving a front wheel
- FIG. 9 shows a perspective view of six electric motor modules which are mounted on two housing parts of an angular gear, with the impact lever being in its normal position in partial figure 9a and in its accident position in partial figure 9b,
- FIG. 10 shows a view from above of the six electric motor modules according to FIG. 9a
- FIG. 11 shows a longitudinal section through the bevel gear according to FIG. 10,
- FIG. 12 shows a cross section through the bevel gear according to FIG. 11,
- FIG. 13 shows an exploded view of the bevel gear according to FIGS. 6 and 7,
- sub-figure 14 shows a cross section through the bevel gear according to FIG. 13, with sub-figure 14a showing the situation in which the impact lever (not shown) is in its normal position and sub-figure 14b showing the situation in which the impact lever is in its accident position,
- FIG. 15 shows a perspective view of an electric vehicle according to the invention without a body according to a fourth embodiment, the impact lever being in its normal position in sub-figure 15a and in its accident position in sub-figure 15b, and
- FIG. 16 shows a view from above of the electric vehicle according to FIGS. 6a and 7a.
- FIG. 1 shows an electric vehicle 10 according to the invention, which has front wheels 12.1, 12.2 and rear wheels 14.1, 14.2 and a longitudinal axis L of the vehicle.
- the rear wheels 14.1, 14.2 are driven by an electric motor 16 which is connected to a motor controller 18 for activation.
- the electric motor 16 is provided with a gear 20 and with connected to a differential gear 22 and drives the rear wheels 14.1,
- the electric motor 16, the gear 20 and the differential gear 22 are part of a rear axle 24.
- the front wheels 12.1, 12.2 are not driven in the embodiment shown in Figure 1 and are steerable.
- a shock absorber 26 is arranged in a front end 27 (compare FIG. 2) of the electric vehicle 10 of FIG.
- the shock absorber 26 has an impact lever 28 which, as in the present case, can have a first part-lever 28a and a second part-lever 28b, but does not have to.
- the shock absorber 26 also has a first energy absorber 32.1 and a second energy absorber
- the shock absorber 26 has a pivot bearing 36 by means of which the impact lever 28 is mounted pivotably about an impact lever pivot axis A28.
- the shock absorber 26 is pivotable about a shock absorber pivot axis A26 gela siege.
- the energy absorber 32 has a first compression deformation element 38.1, a tension deformation element 40.1 and a second compression deformation element 38.2 and a second tension deformation element 40.2.
- the deformation elements 38, 40 (reference symbols without a suffix such as "a” or “.1” always refer to all corresponding objects) run along a pivoting path S of the impact lever 28.
- the front wheels 12.1, 12.2 are suspended by means of a wheel suspension 42 which is attached to a front frame head 44 and has a double wishbone 46.
- the wheel suspension 42, the front frame head 44 and the double transverse link ker 46 are part of a front axle 48.
- the pivot axis A28 runs in the area of the front axle 48 and along this.
- the transverse bar 34 runs transversely to a vehicle longitudinal axis L.
- a transverse bar width B34 (compare FIG. 2) corresponds in the present case to a good approximation to a vehicle width B10.
- FIG. 2 shows that the front wheels 12.1, 12.2 rotate about a front wheel axis of rotation D12 when driving straight ahead.
- the electric vehicle 10 has a battery unit 50 surrounded by a battery frame 52 .
- the battery pack 50 may also include one or more fuel cells arranged to charge the battery elements 54.i.
- the battery frame 52 has a front frame element 56.1, a rear frame element 56.2, a left frame element 56.3 and a right frame element 56.4.
- the battery frame 52 can also have a front middle frame node 58.1, a rear middle frame node 58.2 and/or a rear frame head 60.
- FIG. 2 also shows that the battery frame 52 has four corner frame nodes 62.1, 62.2, 62.3, 62.4.
- FIG. 3a shows that the electric vehicle 10 can have a rear axle shock absorber 64.
- the rear axle shock absorber 64 may include a rear axle impact arm 66 and a rear axle energy absorber 68 .
- the rear axle energy absorber 68 is preferably, but not necessarily, constructed like the energy absorber 32 (see FIG. 1) and can have, for example, a rear axle compression deformation element 70 and a rear axle tension deformation element 72 .
- the energy absorber 32.1 rests against a contact surface 74 of the corner frame node 62.1, 62.2, so that in the event of a frontal rear-end collision, in which a deformation force Fv acts on the electric vehicle 10 from the front, the cross bar 34 moves from its normal position shown in Figure 3a to the accident position shown in Figure 3b is pressed.
- the at least one compression deformation element 38 here the compression deformation element 38.1, 38.2, is supported on the contact surface 74, so that the force acting on the contact surface 74 is diverted into the battery frame 52.
- the energy absorber 32.1 can also have a tensile deformation element 40.1.
- the rear axle energy absorber 68 is supported on a rear axle contact surface 76 .
- the functionality is the same and is therefore not explained again.
- the rear axle shock absorber 64 has a rear axle crossbar 78, the attached to a rear axle impact lever 66 .
- the rear axle impact lever 66 is journalled in a rear axle pivot bearing 82 .
- FIG. 4 shows a third embodiment of an electric vehicle 10 according to the invention, which has a second shock absorber 84, which in the present case is made up of the partial shock absorbers 84a, 84b and which is arranged in front of a passenger cell of the electric vehicle 10.
- a second shock absorber 84 which in the present case is made up of the partial shock absorbers 84a, 84b and which is arranged in front of a passenger cell of the electric vehicle 10.
- the shock absorber 26 is also built up from two partial shock absorbers 26a, 26b.
- the crossbar 34 is also made up of two partial crossbars 34a 34b, which can also be referred to as crossbars.
- the crossbars 34a, 34b are arranged next to one another and adjoin one another in their directions of longitudinal extent L34.
- the two shock absorbers 26, 84 are connected to one another by means of a coupling lever 86, which accordingly consists of two partial coupling levers 86a, 86b.
- FIG. 5a shows a sectional side view of the electric vehicle 10. It can be seen that the electric vehicle 10 has a second pivot bearing 88, by means of which the second shock absorber 84 is pivotally mounted. If at least one component of the deformation force Fv acts on the second shock absorber 84, then this transmits a force to the first shock absorber 26, which then carries out a pivoting movement and deforms the energy absorber 32.
- FIG. 5a shows that the pivot bearings 36, 88 can be arranged at different heights, which represents a preferred embodiment independently of the other features that have been described in connection with this expression.
- FIG. 5a shows the first impact lever 28 and a second impact lever 89 of the second shock absorber 84 in their respective normal positions.
- FIG. 5b shows the first impact lever 28 and the second impact lever 89 in their respective accident positions. It can be seen that it is possible and preferred for the electric vehicle 10 to have two shock absorbers only on its front side.
- the electric motor modules 90.3, 90.4 also act separately from one another on a second bevel gear 92.2, which drives the second front wheel 12.2.
- the electric motor modules 90.1, 90.3 are attached to the cross bar 34.
- the electric motor modules 90.2, 90.4 are fixed relative to the chassis 102, in the present case relative to the battery frame 52.
- the electric motor modules 90.5 and 90.6 are axially coupled to one another and do not drive a third bevel gear 92.3 separately from one another.
- the electric motor modules 90.7, 90.8 drive a fourth bevel gear 92.4 in the same way.
- the electric motor modules 90.9, 90.10, 90.11, 90.12 are attached to the flinter axle cross bar 78.
- FIG. 7a shows a partially sectioned view of the electric vehicle 10. It can be seen that a cooler 93 can also be attached to the shock absorber 26.
- a first Flebel angle ei is drawn between the first rotor axis of rotation Ri of the first electric motor module 90.1 and the florizontal H.
- FIG. 7b shows the situation in which the compression deformation element 38 is deformed due to a rear-end collision.
- the flinter-axis compression deformation member 70 hinge is undeformed.
- FIG. 8 shows four electric motor modules 90.1, 90.2, 90.3, 90.4, which are attached to an angular gear, for example the angular gear 92.1, and drive this separately from one another.
- Each electric motor module 90.j drives a bevel gear 94.j via an axially coupled transmission input shaft 95.j, which gear meshes with an output ring gear 96 on an output shaft 98.
- Figure 9a shows six electric motor modules 90.i, of which three electric motor modules are attached to a first housing part 100.1, and of which three further electric tromotor modules are attached to a second housing part 100.2.
- the two housing parts 100.1, 100.2 are attached to one another and pivotable relative to one another by means of a pivot bearing 36 (see FIG. 12).
- the first housing part 100.1 is firmly connected to a chassis 102.
- the second housing part 100.2 is fastened relative to the shock absorber 26.
- Motor regulators 104 which are each a component of corresponding electric motor module 90.j, are also shown.
- Figure 9a shows the situation where the impact lever 28 is in its normal position, which equivalently means that the shock absorber 26 is in its normal position.
- FIG. 9b shows the six electric motor modules 90.j, the impact lever 28 being in its accident position. It can be seen that the attached electric motor modules 90.4, 90.5, 90.6 are attached unchanged to the second housing part 100.2, but that the second housing part 100.2 is pivoted relative to the first housing part 100.1. The movement of the impact lever 28 did not damage the electrical modules 90.4, 90.5, 90.6. After the impact lever 28 has been moved back, the drive is restored.
- FIG. 10 shows the arrangement according to FIG. 9a from above.
- Figure 11 shows a cross section through the arrangement according to Figures 9 and 10.
- FIG. 12 shows a cross section through the output shaft 98. It can be seen that two ring gears 96.1, 96.2 are arranged on the output shaft 98. The first Tel lerrad 96.1 meshes with the pinions 94.1, 94.2, 94.3 of the electric motor modules 90.1,
- the second ring gear 96.2 meshes with the pinions 94.4, 94.5, 94.6 of the electric motor modules 90.4, 90.5, 90.6.
- FIG. 13 shows an exploded drawing of the bevel gear 92 as a variant with two gear input shafts 95.1 and 95.2, on which the bevel gears 95.1 and 95.2 are fastened.
- the second bevel gear 94.2 on the second transmission input shaft 95.2 is mounted in the pivotable transmission housing part 100.2, the shaft bearings not being shown in FIG. 13 but in FIG. It can be seen that between the first housing part 100.1 and the second housing part 100.2 a first Transmission cover 99.1 and/or a second transmission cover 99.2 may be present.
- FIGS. 14a and 14b show a cross section through the bevel gear 92.
- FIG. 14a shows the normal position.
- the accident position is shown in FIG. 14b.
- the transmission input shafts 95.j, which are axially coupled to the electric motor modules 90.j, are mounted by means of shaft bearings 97.j
- FIG. 15a shows a third embodiment of an electric vehicle 10 according to the invention.
- the electric vehicle 10 has six electric motor modules 90.1, . . . 90.6.
- the three electric motor modules 90.1, 90.2, 90.3 are coupled to one another collinearly with their rotors 91.j and act together on an angular gear 92.1, which transmits the drive torque to the front wheels 12.1, 12.2.
- the three electric motor modules 90.4, 90.5, 90.6 are also coupled to one another with their rotors collinearly and act together on the angular gear 92.2, which drives the flinter wheels 14.1, 14.2.
- FIG. 15a also shows that the electric vehicle 10 has a central tunnel wall 106 which forms a central tunnel 108.
- a front center frame node 58.1 is attached at the front end of the center tunnel 108 with respect to a direction of travel F.
- a rear frame node 58.2 is mounted at the rear end of the central tunnel 108.
- the cooler 93 is permanently installed on the chassis 102, since all engine modules 90.j are also permanently installed on the chassis 102.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Transportation (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Power Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Arrangement Or Mounting Of Propulsion Units For Vehicles (AREA)
Abstract
Description
Claims
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/EP2021/061596 WO2022233389A1 (de) | 2021-05-03 | 2021-05-03 | Elektrofahrzeug |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP4334175A1 true EP4334175A1 (de) | 2024-03-13 |
Family
ID=75787115
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP21723239.6A Withdrawn EP4334175A1 (de) | 2021-05-03 | 2021-05-03 | Elektrofahrzeug |
Country Status (2)
| Country | Link |
|---|---|
| EP (1) | EP4334175A1 (de) |
| WO (1) | WO2022233389A1 (de) |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4206022C2 (de) * | 1992-02-27 | 1997-07-03 | Man Nutzfahrzeuge Ag | Aufprallvorrichtung für Nutzfahrzeuge |
| JP2932133B2 (ja) * | 1993-03-19 | 1999-08-09 | トヨタ自動車株式会社 | 電気自動車の補機部品配置構造 |
-
2021
- 2021-05-03 WO PCT/EP2021/061596 patent/WO2022233389A1/de not_active Ceased
- 2021-05-03 EP EP21723239.6A patent/EP4334175A1/de not_active Withdrawn
Also Published As
| Publication number | Publication date |
|---|---|
| WO2022233389A1 (de) | 2022-11-10 |
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