# US 2013/0153313 A1 · Energy regeneration device for either hybrid vehicle or electric automobile

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- Number: US 2013/0153313 A1
- Document ID: US20130153313A1
- Status: Published application
- Kind: A1
- Application number: 13/819,129
- Filed: 2011-03-09
- Published: 2013-06-20
- Earliest claimed: 2010-09-01
- Inventors: Akihiko Okamoto
- Web page: https://patentgrep.com/patent/US20130153313A1

## CPC

- B60L 53/00: Methods of charging batteries, specially adapted for electric vehicles; Charging stations or on-board charging equipment therefor; Exchange of energy storage elements in electric vehicles
- B60G 17/08: Characteristics of fluid dampers (adjusting fluid dampers in general F16F9/44 - F16F9/53)
- B60K 6/12: by means of a chargeable fluidic accumulator
- B60K 6/22: characterised by apparatus, components or means specially adapted for HEVs
- B60K 6/30: characterised by chargeable mechanical accumulators, e.g. flywheels
- B60K 25/10: directly from oscillating movements due to vehicle running motion, e.g. suspension movement
- B60W 10/22: including control of suspension systems
- B60G 2300/50: Electric vehicles; Hybrid vehicles
- B60G 2300/60: Vehicles using regenerative power
- B60K 2001/0433: {Arrangement under the rear seats}
- B60K 2001/0438: {Arrangement under the floor}
- B60K 2025/106: {by fluid means}
- Y02T 10/62: Hybrid vehicles
- Y02T 10/70: Energy storage systems for electromobility, e.g. batteries
- Y02T 10/7072: Electromobility specific charging systems or methods for batteries, ultracapacitors, supercapacitors or double-layer capacitors
- Y02T 90/14: Plug-in electric vehicles
- B60L: PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES (arrangements or mounting of electrical propulsion units or of plural diverse prime-movers for mutual or common propulsion in vehicles B60K1/00, B60K6/20; arrangements or mounting of electrical gearing in vehicles B60K17/12, B60K17/14; preventing wheel slip by reducing power in rail vehicles B61C15/08; dynamo-electric machines H02K; control or regulation of electric motors H02P); SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES (electric coupling devices combined with mechanical couplings of vehicles B60D1/64; electric heating for vehicles B60H1/00); ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL (control or regulation of electric motors H02P); MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60G: VEHICLE SUSPENSION ARRANGEMENTS (air-cushion vehicles B60V; {cycle suspensions B62K25/00})
- 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
- B60W: CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- Y02T: CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION

## Abstract

[Problem] The motive power of a hybrid vehicle is the driving power of a gasoline engine, the electric power produced by a generator coupled to the engine, and the electric power obtained by conversion from kinetic energy into electric energy through a regeneration brake during deceleration. Also, an electric vehicle uses the electric power of a battery as its motive power by converting kinetic energy into electric energy through a regeneration brake during deceleration and storing the electric energy. However, the regenerated energy is little. [Solution] While keeping intact the damping effect of shock absorbers conventionally mounted on the suspension of a vehicle, an oil pump function is added. The electric power produced by storing, in an accumulator, oil pressure-fed from the shock absorbers, driving a hydraulic motor under increased oil pressure, driving a generator coupled to the hydraulic motor is used as part of the motive power.

## Claims

### Claim 1

An energy renewal device provided in a hybrid or electric vehicle having wheels, the energy renewal device comprising:
shock absorbers (A) provided for each separate one of the wheels;
an accumulator (B);
a hydraulic motor (D);
a generator (E);
an oil tank (C);
a converter (0); and
a battery (P),
the shock absorbers (A) each including an oil suction valve port (A22), an oil suction valve (A10), an oil passage (A12), an internal oil suction port (A14), a cylinder chamber (A4), a piston (A5), a plurality of orifices (A9), a piston valve (A6), a valve spring (A7), a cylinder chamber (A13), an intra-shaft oil passage (A3), an oil discharge port (A23), an oil discharge valve (A11), and an oil discharge valve port (A20),
while the vehicle is traveling, extension and contraction of the shock absorbers (A) causing the shock absorbers (A) provided for each separate one of the wheels to act as oil pumps,
the shock absorbers (A) performing two functions, namely (i) a function of acting as oil pumps and (ii) a function of bringing about a damping effect, during the contraction of the shock absorbers (A) and during the extension of the shock absorbers (A), respectively, such that during the contraction of the shock absorbers (A), each of the shock absorbers (A) pressure-feeds oil into the accumulator B through the oil discharge valve port (A20) by causing the oil in the cylinder chamber (A13) to flow through the oil discharge port (A23) after passing through the intra-shaft oil passage (A3) and push open the oil discharge valve (A11); at the same time, each of the shock absorbers (A) causes the the oil sucked in through the oil suction valve port (A22) to push down the oil suction valve (A10), pass through the oil passage (A12), and flow into the cylinder chamber (A4) through the internal oil suction port (A14), and that during the extension of the shock absorbers (A), each of the shock absorbers (A) causes the oil suction valve (A10) and the oil discharge valve (A11) to be closed so that the oil in the cylinder chamber (A4) passes through the plurality of orifices (A9) of the piston (A5) and pushes down the piston valve (A6), and thereby causes the oil to flow into the cylinder chamber (A13) while bringing about the damping effect,
the oil pressure-fed from the shock absorbers (A) being accumulated in the accumulator (B) and having its pressure raised, the oil pressure thus raised driving the hydraulic motor (D), electricity being produced by the generator (E) coupled to the hydraulic motor (D) and being transmitted to the battery (P) so that the hybrid or electric vehicle is charged with auxiliary electric power.