Mass drive for extending the range of electric vehicles

Minimalist designs in electric vehicles convert suspension energy into electrical energy using a pump system and rocker arm pendulum disc, addressing inefficiencies in existing systems while maintaining vehicle handling and reducing costs.

DE202025001558U1Active Publication Date: 2026-01-15ELLES STEPHAN
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Patent Information

Application Number
DE202025001558
Authority / Receiving Office
DE · DE
Patent Type
Utility models
Current Assignee / Owner
Filing Date
2025-08-07
Publication Date
2026-01-15
Estimated Expiration
2035-08-31

AI Technical Summary

Technical Problem

Existing energy recovery systems for electric vehicles are complex and expensive, failing to efficiently convert wheel suspension energy into electrical energy without compromising vehicle handling.

Method used

Two minimalist designs are proposed: a pump system using magnetically controlled check valves and a rocker arm system with a pendulum disc, both converting suspension energy into electrical energy without interfering with the suspension's harmonious operation.

Benefits of technology

These designs efficiently convert suspension energy into electrical energy, enhancing the vehicle's range without increasing complexity or cost, maintaining suspension performance and potentially reducing battery requirements.

✦ Generated by Eureka AI based on patent content.

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Abstract

Protection claims for the system with hydraulic pump system for driving a power generator cylinder (1, Fig. 1), consisting of the material aluminium, plastic or steel, which sits in a housing directly on the shock absorber (Fig. 1, 13) of the car and pumps oil via lines to drive a generator,
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Description

Figures 1 and 3 apply from now on: 1. Problem statement:

[0001] Assumption: A car with a mass of 2,000 kg and four wheels has a wheel load of 500 kg. When driving, this wheel load generates sometimes enormous forces as the wheels roll over uneven road surfaces (rocks, stones, potholes), which must be absorbed and dissipated by the axle structure. The energy dissipated by the suspension system is thus currently lost to the vehicle system. The technology of this invention serves to partially recover this lost energy and convert it into electrical energy.

[0002] Since complex suspension systems operate as very harmonious systems, recuperation must not negatively interfere with these processes. Therefore, even the smallest horizontal movement of the damper must be used for maximum energy yield and thus for generating charging current, without restricting driving performance. (See also: Problem solving topic) 2. State of the art - so far and disadvantages:

[0003] When examining the current state of technology, it becomes apparent that several inventions already exist in this field, but these are generally considered to be very elaborate in design and technically highly sophisticated in their execution. As a result, they have not yet gained traction in the market, apparently because they are too complex and expensive. 3. Problem solving and invention presentation:

[0004] The goal of energy recovery technology is to convert as much of this energy (potential and kinetic) as possible into electrical energy through a suitable invention, thereby enabling the operation of an electric car with storable energy (energy recovery). There are two fundamentally different minimalist design approaches. 1. The pump system - Fig. 1 2. The rocker arm system with pendulum disc - Fig. 3 Regarding 1. Fig. 1: Pump system

[0005] Energy recovery via a system in which the generator is driven by oil, gas, or air: The design stipulates that the vehicle is brought into an active state before the journey begins. Air, gas, or oil is pumped into the recovery system, which is connected to the suspension system, by means of an electric pump. After leveling, the four suspension struts, which are designed as air / gas / oil pumps, begin their operation. Structure using oil as an example:

[0006] The pump system features a cylinder similar to that of a gasoline engine. A piston is located in the center of the cylinder, sealing off the upper cylinder chamber from the lower one. Each cylinder chamber has two magnetically controlled check valves, one for the intake and one for the exhaust. The piston is moved vertically by a sensor connected to the shock absorber. The oil is stored in a sufficiently large oil reservoir (200 ml), which is connected to the cylinders via pipes on both the intake and exhaust sides. On the exhaust side, the oil line system, before the oil is returned to the reservoir, contains the drive for the liquid- or gas-powered generator. Four of these systems are installed in the vehicle. See also Function: Function using the example of oil:

[0007] The piston is moved up and down in the cylinder by a sensor directly connected to the shock absorber during compression and rebound. When the piston moves downwards during shock absorber compression, it draws oil into the upper cylinder chamber via valve 5. Valve 7 remains closed. During the same piston movement, overpressure is created in the lower cylinder chamber. The oil from the lower cylinder chamber is then forced through the now-open valve 8 via a pipe connection into the generator drive, thus driving the generator. Valve 6 remains closed. During rebound, the piston in the cylinder is moved upwards by the shock absorber's sensor. This creates overpressure in the upper cylinder chamber. Valve 7 opens, allowing oil to flow into the generator drive and then back into the oil reservoir. Valve 5 remains closed. As the piston moves upwards, oil is drawn into the lower cylinder chamber through the now-open Valve 6. Valve 8 remains closed.

[0008] From here, as the piston is drawn in, the oil passes through the intake valves into the two cylinder chambers 4A and 4B. After being pumped by valves 7 and 8 and driving the generator, the oil returns to the oil reservoir via pipe connections. The solenoid valves are controlled by electrical impulses from the redundant control system. Regarding 2. Fig. 3: Rocker arm with pendulum disc:

[0009] Generator drive via a rocker arm system consisting of the pivot on the shock absorber and the clamp it drives on the semicircular pendulum disc. This is connected via a toothed belt / rack / cable: See illustration. In this system, the high vehicle load during compression and rebound of the vehicle's suspension is transferred to a small, very stable rocker arm (pivot) located on the moving part (piston pin) of the shock absorber or on the steering knuckles. The driven pivot, via the clamp which is welded to the pendulum disc and mounted in a ball / roller bearing, causes the pendulum disc to oscillate during compression and rebound. (The pendulum disc is either welded or manufactured as a stamped part from a single piece.) The pendulum disc's construction is similar to that of a balance scale.When the rocker arm is moved downwards from the axis, the beam of the pendulum disc (crossbeam construction) undergoes a rotational movement around the common ball / roller bearing and is thus moved up and down in a semicircular motion – pendulum motion (see figure). The shape of this centrally supported construction can be, for example, a rectangular element, but it can also be elliptical. The two opposite ends of the pendulum disc are each connected to a toothed belt / rack / cable, which sets the generator in a rotary motion.

[0010] This means that during driving – when the suspension compresses – the axle link, via the actuation of the short rocker arm, rotates the long lever / semicircle or semi-oval of the pendulum disc by up to 90°. The two toothed belts / rack / cable located at its end drive one or more generators.

[0011] Alternating current: This design generates an alternating current of varying amplitude, depending on the intensity of the spring compression. Two types of generators can be driven: A) The transversely moving generator B) The rotating dynamo generator

[0012] Three-phase current: To generate three-phase current, the dynamo-generator must always rotate in only one direction. To achieve this, two opposing gear rings must be mounted side by side on the pendulum pulley. Each semicircular gear ring drives a gear that has a freewheel. Both gears are located separately, with their freewheel drives, on the same drive shaft, which in turn always drives the generator in the same direction of rotation.

[0013] When the shock absorber compresses, the pendulum disc rotates. During this movement, the pendulum disc's toothed ring A1 drives gear A2, causing the generator to rotate. When the shock absorber rebounds, the pendulum disc moves in the opposite direction. Toothed ring B1 now engages gear B2 and drives it. The generator continues to rotate in the same direction. Gear A2 remains inactive. To generate alternating current, the freewheeling elements in gears A2 and B2 must be removed.

[0014] 3. Advantages: For the widespread adoption of electromobility, the energy recovery technology described above for the chassis aims to convert as much of this energy as possible (potential and kinetic) into electrical energy through a suitable chassis design, thus powering an electric car without negatively impacting the vehicle's handling. This means that the two systems presented here operate extremely sensitively without compromising the quality of the suspension system, which is crucial for the success of this technology. A technically simple, lightweight (aluminum, plastics), inexpensive, and permanently reliable range extension is therefore possible. The vehicle's battery capacity can potentially be reduced.

[0015] Fig. 1: 1. Cylinder (1) with arrow 2. Piston (2) 3. Piston rod (3) 4. Upper cylinder chamber (4a) 5. Lower cylinder chamber (4B) 6. Oil supply line with inlet valve (5) into the upper cylinder chamber 7. Oil supply line with inlet valve (6) into the lower cylinder chamber 8. Oil drain line with outlet valve (7) into the upper cylinder chamber 9. Oil drain line with outlet valve (8) into the lower cylinder chamber 10. Oil line (9) 11. Oil line to generator (10) 12. Oil line to oil reservoir (11) 13. Wheel axle (12) 14. Shock absorber (13) Fig. 2: System with direct induction: 1. Shock absorber 2. Wheel hub 3. Damper pin 4. Magnetic field mobile with shock absorber 5. Coil - fixed Fig. 3: System with pendulum disc drive 1. Pendulum disc (1) 2. Wheel axle (2) 3. Damper pins on the shock absorber (3) 4. Connecting claw (4) on the pendulum disc 5. Axis of rotation pendulum disk (5) 6. Pendulum disk, semicircular (1) with gears (A 1 and B 2) 7. Drive axle (7) with freewheel and gears (A 2 and B 2) 8. Generator (8) 9. Rectangular structure (9 Image 4)

Claims

[1] Claims for protection of the system with hydraulic pump system for driving a power generator cylinder (1, Fig. 1) consisting of the material aluminium, plastic or steel, which is housed directly on the shock absorber ( Fig. 1, Fig. 13) of the car and pumps oil via lines to drive a generator, [2] Pump system according to claim 1, characterized by , that a round cylinder (1, Fig. 1) is dimensioned with a diameter of 15 cm and a height of 8 cm, [3] Pumping system according to any of the preceding claims, characterized by , that the piston matching the cylinder (2, Fig. 1) with sealing rings in the middle of the cylinder (1, Fig. 1) should move vertically, [4] Pumping system according to any of the preceding claims, characterized by , that in the cylinder an upper (4a, Fig. 1) and a lower (4b, Fig. 1) Oil chamber through the piston positioned in the middle (2, Fig.1) be separated, [5] Pumping system according to any of the preceding claims, characterized by , that the piston (2, Fig. 1) by a piston rod (3, Fig. 1) is driven, which is in direct connection with the shock absorber of the car's suspension system, [6] Pumping system according to any of the preceding claims, characterized by , that the upper cylinder chamber (4a, Fig. 1) with an oil supply line (5, Fig. 1) and is connected to an electric solenoid inlet valve, [7] Pumping system according to any preceding claim, characterized by , that the upper cylinder chamber (4a, Fig. 1) on the opposite side of the supply line with an oil drain line (7, Fig. 1) and is connected to an electric solenoid outlet valve, [8] Pumping system according to any of the preceding claims, characterized by , that the lower cylinder chamber (4b, Fig. 1) with an oil supply line (6, Fig.1) and is connected to an electric solenoid inlet valve, [9] Pumping system according to any of the preceding claims, characterized by , that the lower cylinder chamber (4b, Fig. 1) on the opposite side of the supply line (6, Fig. 1) with an oil drain line (8, Fig. 1) and is connected to an electric solenoid outlet valve, [10] Pumping system according to any of the preceding claims, characterized by , that both drain lines (7 and 8, Fig. 1) into the line (9, Fig. 1) flow into, [11] Pumping system according to any of the preceding claims, characterized by , the oil through pipe (9, Fig. 1) into the generator (10, Fig. 1) occurs, [12] Pumping system according to any of the preceding claims, characterized by , that the line (9, Fig. 1) from the generator into the oil reservoir (11, Fig. 1) with a capacity of approximately 200 ml, [13] Pumping system according to any of the preceding claims, characterized by , that the line (9, Fig. 1) from the oil reservoir (11, Fig. 1) exits again and affects the supply lines (5 and 6, Fig. 1) divides, [14] Claims for protection for the system with pendulum disc drive, characterized by , that the pendulum disk is a 180° semicircular disk (1, Fig. 3) is made of steel, plastic or aluminium with a radius of approximately 100 mm and a width of approximately 15 mm, [15] Pendulum disk according to any of the preceding claims, characterized by , that along the diameter line a rectangular structure (9, Fig. 3) with a width of 10 mm, [16] Pendulum disk according to any of the preceding claims, characterized by , that at the center of the circle of the pendulum disk (1, Fig. 3) the axis of rotation of the pendulum disk (5, Fig. 3) is located in a roller bearing with a diameter of 30 mm, [17] Pendulum disk according to any of the preceding claims, characterized by , that the connecting claw (4 arrow, ) is located 10 mm away from the roller bearing. Fig. 3) is located, consisting of two cones (4, Fig. 3) arranged side by side in a semicircle at a distance of 5 mm, consisting of two steel protrusions with a height of 5 mm and a material thickness of 5 mm, tapering into the pendulum disc material with a radius of 5 mm, [18] Pendulum disk according to any of the preceding claims, characterized by , that in the middle of the connecting claw of the damper pin (3, Fig. 3) with a radius of 4.9 mm, which is located directly on the piston rod of the vibration damper, [19] Pendulum disk according to any of the preceding claims, characterized by , that on the outer radius of the pendulum disk (1, Fig. 3) two 3 mm wide gear profiles (A1, B1, Fig.3) extend over the entire semicircle. The semicircular gears have drive teeth that have been milled in the opposite direction with a tooth height that is yet to be determined, minimum height 2 mm. [20] Pendulum disk according to any preceding claim, characterized by , that the two semicircular gears (A1 and B1, Fig. 3) the pendulum disc into two gears (A2, B2). Fig. 3), which are located on the two axes (6 + 7, Fig. 3) to be located, to intervene, [21] Pendulum disk according to any of the preceding claims, characterized by , that the two gears (A2, B2, Fig. 3) on the axes (7, Fig. 3) are mounted, each consisting of a freewheel which, in the case of gear A2, is mounted rotated by 180° relative to gear (B2, Fig. 3) (freewheeling is eliminated in AC power generation), [22] Pendulum disk according to any of the preceding claims, characterized by, that the two gears (A2 + B2, Fig. 3) directly on the generator's drive shaft (8, Fig. 3) sit and urge him on.

Citation Information

Patent Citations

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