The popularity of electric vehicles has shot up over the last few years with a great shift in the public’s attitude towards electric vehicles and a constantly improving public recharging system. Electric cars and trucks are powered by electricity and are cleaner and cheaper to drive than conventional vehicles. With a rapid increase in the use of personal vehicles around the world, the demand for fuel is also increasing. Transportation accounts for about one-fifth of global energy use, and passenger vehicles account for about ten percent of energy-related carbon dioxide emissions. In such a scenario, electric vehicles hold significant potential for increasing energy security, cutting emissions and improving local air quality.
Electric vehicles is a broad term that refers to a wide range of cars and other vehicles. However electric vehicles are of following types:
Hybrid-electric vehicles are powered by an internal combustion engine system with an electric propulsion system to reduce fuel consumption and tailpipe emissions. These advanced vehicles cut fuel use and costs while maintaining performance, protecting public health and the environment.
Plug-in hybrids are hybrids with high capacity batteries that can be charged by plugging them into an electrical outlet or charging station for short-range travel on battery power alone.
Battery electric vehicle run entirely on battery power, utilizing chemical energy stored in rechargeable battery packs thereby producing zero tailpipe emissions. They are recharged from an electrical outlet.
Fuel cell vehicles uses a fuel cell instead of an electrical battery. Fuel cell electric vehicles are powered by hydrogen. Unlike conventional vehicles which run on gasoline or diesel, fuel cell vehicles combine hydrogen and oxygen to produce electricity, which runs a motor.
Electric vehicles have several advantages over conventional vehicles like electric vehicles are energy efficient and environment friendly providing performance benefits and reduced energy dependence. However the market of electric vehicles is still developing, and there are many battery related challenges, particularly with technology integration, optimization, and scale-up.
Recent Patents filed in the electric vehicle market:
Title: ALL ELECTRIC VEHICLE WITHOUT PLUG-IN REQUIREMENT
Assignee: WELSCHOFF, Heinz (1820 NE 56th Court, Fort Lauderdale, FL, FL, US)
Publication Date: 14 Dec 2017
An electric powered vehicle includes a battery pack capable of storing electric energy, A fuel engine operated with a clean fuel. A generator or alternator 126 having communication with the engine, and supply electric energy to the electric driving motor A starter of the fuel engine activates when a sensed charge of the battery pack falls to or below the DMF value. Included is a second 128 and third generator or alternator 130 in communication with the fuel engine during periods when no electrical communication exists between the EDM and the battery pack. The second and third generators maintain an electrical output to the battery pack until the battery packs are fully charged. Included is a rear generator or alternator 152 in communication with a rear drive shaft assembly, or differential, including a level orientation sensor and a rotational velocity sensor communication between an output of such communication enabled upon any downhill motion of the vehicle above a predetermined operational velocity determined by the velocity sensor. A second rear generator 156 is controlled by an accelerator pedal, rpm sensor, electric clutch and is activated when no pressure is applied by a driver upon the accelerator pedal, permitting charging of the battery pack by the second rear generator 156 only upon a condition of zero acceleration. A third rear generator 300 is activated by the brake pedal and brake pedal switch does charge the battery packs 102/104.
Title: ELECTRIC POWERTRAIN, TRANSMISSION, AND VEHICLE
The present disclosure relates to a powertrain (K) for driving a vehicle (C). The powertrain (K) comprises two powertrain modules (Y,Y’) comprising each a rotating machine (M,M’) and a transmission (T,T’). The transmissions (T,T’) are arranged to align their respective output shafts (S2,S2′) towards a common wheel axis (A1) for driving a pair of opposite wheels of the vehicle (C). The first rotating axis (A3), the second rotating axis (A3) and a central axis (A0) of the powertrain K are parallel and offset with respect to the each other and the first rotating axis (A3) and the second rotating axis (A3′) are mirror-symmetrically offset on opposite sides of the central axis (A0). In this way a compact and versatile design is achieved.
Title: RESPONSE AMPLITUDE MODIFICATION FOR HYBRID ELECTRIC VEHICLE MISFIRE DETECTIONS
Assignee: FCA US LLC (1000 Chrysler Drive, Auburn Hills, Michigan, 48326, US)
Publication Date: 14 Nov 2017
Misfire detection techniques for a hybrid electric vehicle (HEV) including an internal combustion engine and an electric motor involve utilizing a crankshaft speed sensor configured to generate a crankshaft speed signal indicative of a rotational speed of a crankshaft of the engine that is coupled to the electric motor via a flywheel. The techniques also utilize a controller configured to control the electric motor to provide a vibrational response to dampen disturbances to the crankshaft, receive the crankshaft speed signal, selectively modify the crankshaft speed signal to obtain a modified crankshaft speed signal, and detect a misfire of the engine based on the modified crankshaft speed signal and a set of thresholds including at least one of a negative misfire threshold and a positive vibrational response threshold.
Title: IN-VEHICLE STRUCTURE OF ELECTRIC-POWER CONVERTER
Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA (Toyota-shi, JP)
Publication Date: 14 Dec 2017
In an in-vehicle structure described in the present specification, an electric-power converter is fixed onto a transaxle and positioned in front of a cowl top. The electric-power converter includes a capacitor configured to restrain a high-frequency fluctuation in a voltage of electric power supplied from a battery, and a discharge circuit configured to discharge the capacitor. A connector (a signal connector) to which a wiring harness for communication of a discharge instruction signal to operate the discharge circuit at a time of a collision is connected is provided on a side face of the electric-power converter, the side face of the electric-power converter being facing in a vehicle width direction.
Title: Electric machine for a vehicle, in particular for a utility vehicle, and method for protection against ingress of water
Assignee: MAN Truck & Bus AG (Munich, DE)
Publication Date: 12 Dec 2017
An electric machine for a vehicle, in particular for a utility vehicle, includes a rotor mounted rotatably on a shaft and a stator surrounding the rotor, at least one device of the electric machine located in at least one pressure chamber which is subjected at least intermittently to an overpressure which is elevated with respect to the ambient pressure. The over pressure in at least one pressure chamber protects against ingress of water
Title: System and method for aggregating electric vehicle loads for demand response events
Assignee: Honda Motor Co., Ltd. (Tokyo, JP)
Publication Date: 12 Dec 2017
A computer-implemented method for aggregating electric vehicle loads for demand response events includes receiving a demand response (DR) event request from a utility system indicative of a DR event for an area. The DR event request includes at least one event parameter for participation in the DR event. The method includes determining a first original equipment manufacturer (OEM) DR event load for the area based on the DR event request and charging data received from electric vehicles associated with a first OEM. Upon determining the first original OEM DR event load does not meet the at least one event parameter, the method includes aggregating charging data from electric vehicles associated with a second OEM with the first OEM DR event load to determine an aggregated DR load for the area.
Title: Electric vehicle
Assignee: SUZUKI MOTOR CORPORATION (Hamamatsu-Shi, Shizuoka-Ken, JP)
Publication Date: 12 Dec 2017
An electric vehicle capable of efficiently and reliably cooling a power converter disposed inside an exterior. An electric vehicle includes a frame extending in a longitudinal direction, a power converter being long in the longitudinal direction along the frame, and an exterior extending in the longitudinal direction to cover the frame and the power converter, the exterior defining a cooling air path between the power converter to allow cooling air to flow through the cooling air path along the longitudinal direction. The power converter extends in the longitudinal direction in the cooling air path, and includes a plurality of heat radiation fins protruding toward an inner surface of the exterior, and the exterior includes an air induction port provided at a front end of the cooling air path to allow travelling wind to flow into the cooling air path.