30results about "Propulsion by batteries/cells" patented technology

A hybrid electric propulsion system for powering a vehicle using a natural fuel engine and an electric motor. The hybrid electric vehicle is comprised of a drive train; an electric motor for driving the drive train; an auxiliary power unit (APU); an electric energy storage system electrically coupled to the electric motor; and wherein the auxiliary power unit and the electric energy storage system provide energy for powering the vehicle. An electric bus is directly connected to both the auxiliary power unit and the electric energy source and the voltage across the electric bus is substantially the same as the voltage across the electric energy source so that a change in voltage of the electric bus results in the same change to the voltage across the electric energy source. A power management controller is programmed to control output power of the power unit to maintain the energy storage system between a predetermined high voltage set-point and a predetermined low voltage set-point.

A vehicle has a plurality of traveling modes. A display device for the vehicle comprises: a display unit displaying map information; and a control unit causing the display unit to display recognizably, at a portion of roads in the map information, traveling modes that correspond to the roads. Preferably, the control unit sets a destination in response to an instruction received from an operator, searches for a traveling route extending from a starting point to the destination, divides the traveling route into segments, and associates one of the traveling modes with each of the segments. More preferably, the control unit causes the display unit to display the plurality of candidate traveling routes, each with the traveling mode overlaid thereon, and selects in response to an instruction of the operator one traveling route planned to be taken among the plurality of candidate traveling routes.

A method for starting a cold or frozen fuel cell stack as efficiently and quickly as possible in a vehicle application is based upon a state of charge of a first power source such as a high voltage battery. Power flow between the first power source and fuel cell system is coordinated in conjunction with a specific load schedule and parallel control algorithms to minimize the start time required and optimize system warm-up.

The present invention relates to an electric car which has a battery pack at a constant state of maximum power discharge and to a method of efficiently controlling a motor with due consideration for rechargeable power levels. The control method according to one embodiment of the present invention, comprises the steps of: calculating estimated power levels required, based on current power consumption levels, for providing current from the battery pack to all parts of an electric car, and the required torque according to a driver's activation of the accelerator; comparing the estimated power levels required with the maximum possible power discharge from the battery pack; and enabling maximum possible torque from the motor when the estimated power levels required exceeds the current maximum possible power discharge from the battery pack.

The present invention relates to a battery module, which includes one or more battery cell units, and the battery cell unit includes a battery cell, a fixing member located surrounding an outer circumference surface of the battery cell, and a heat absorbing material located between the battery cell and the fixing member, and as a result, heat generation inside the battery module is suppressed, and ignition between the series-connected battery cell units may be suppressed. Accordingly, excellent charge and discharge efficiency, an excellent cycle property and a lifespan property of the battery may be exhibited without concern for explosion or ignition of the battery module.

A system for connecting a power-supply battery to a motor vehicle, including a device for ventilating the battery, and a multi-connection plate which includes openings for connecting to at least two ducts for circulating a heat-transport fluid, and for connecting to the battery so as to connect the at least two ducts to an inner circulation circuit of the battery.

An electric charging system for a vessel, vehicle, or aircraft includes one or more energy storage modules on the vessel, vehicle, or aircraft; a pulse rectifier; a converter; and a voltage control transformer. The one or more energy storage modules are connected to outputs of the pulse rectifier. The voltage control transformer is connected to inputs of the pulse rectifier. The voltage control transformer includes a serial transformer having a plurality of pairs of transformer windings, connected together in series, one winding of each pair being adapted to be connected between the pulse rectifier and an input from an energy source and the other winding is connected to the converter.

A damping control device for an electric vehicle is having a continuously variable transmission between a motor and left and right front wheels. The damping control device drive system includes a feedback control unit, which suppresses a vibration accompanying a disturbance in the rotational speed of the motor, and an operation determination unit, which determines whether or not an absolute value of a second-order differential of the transmission ratio is equal to, or greater than, a predetermined value, wherein when the absolute value of the second-order differential of the transmission ratio is equal to, or greater than, the predetermined value. The feedback control unit performs control of the output torque of the motor whereby a compensation torque component for suppressing a vibration accompanying a gear shift is subtracted from a compensation torque.

The invention discloses a power battery box and a vehicle with the same. The power battery box is installed beneath a vehicle floor and comprises an upper box body and a lower box body, the upper box body and the lower box body are arranged in a buckled mode so as to limit a battery installation space used for installing a power battery between the upper box body and the lower box body, and a sealing pad is arranged between the upper box body and the lower box body. According to the power battery box, water or dust can be prevented from entering the power battery box, and therefore the power battery can be in a safe and stable working environment.

An electric vehicle includes a frame unit and a vehicle body cover unit. The vehicle body cover unit includes a thread board shielding left and right tread tubes of the frame unit between which a receiving space is defined to receive a battery box that receives and holds a battery. The battery box has two sides provided with support shafts. The battery box is rotatable between an open position and a storage position. A locking device is selectively set in releasable engagement with a positioning member provided on the battery box so as to selectively lock the battery box in the storage position. An operation unit is provided for controlling the locking device to engage with or disengage from the positioning member so as to allow the battery box to rotate from the storage position to the open position.

The invention relates to a network-free self-walking energy storage and high-frequency auxiliary converter system for rail transit. The system comprises a lithium titanate battery pack I, a positivefuse, a voltage sensor, an insulation detection module, a current sensor, a positive contactor, a traction power supply output interface, a high-frequency auxiliary converter, a DC 1500V power supplyinput interface, a negative fuse, a negative contactor, a manual maintenance switch, a BMS battery management system, a communication and control interface, a pre-charging contactor, a pre-charging resistor, an AC380V output interface, a DC110V non-permanent bus output interface, a one-way DC/DC converter, a DC110V permanent bus output interface and a lithium titanate battery pack II. The electricenergy is stored in the lithium titanate battery pack, when a vehicle needs to be put into the energy storage system, the vehicle sends an input signal, the BMS makes the positive contactor and the negative contactor in the energy storage system be closed after receiving a starting signal, and power is supplied to a vehicle traction system through the traction power supply output interface.

A driving apparatus for an electric vehicle includes a motor including a stator having a main winding and an auxiliary winding and a rotor rotating due to magnetic interaction between the main winding and the auxiliary winding, an engine configured to selectively rotate the rotor, a motor controller including a first inverter connected to the main winding and a second inverter connected to the auxiliary winding, a first battery connected to the first inverter and configured to drive the motor or configured to be chargeable by the motor, and a second battery connected to the second inverter, configured to be chargeable by the motor, and having a charging voltage lower than that of the first battery.

The invention discloses a bump processing apparatus and method of an electric automobile. The apparatus comprises an X-direction acceleration transducer arranged on a battery casing for detecting an accelerated speed of the battery casing in the advancing direction of the electric automobile; a Y-direction acceleration transducer arranged on the battery casing for detecting an accelerated speed of the battery casing in a direction vertical to the advancing direction of the electric automobile; a gravity sensor arranged on the battery casing for detecting an inclination angle between the battery casing and a horizontal plane; an alarm apparatus used for emitting an alarm; and a controller connected with the X-direction acceleration transducer, the Y-direction acceleration transducer, the gravity sensor and the alarm apparatus for controlling the alarm apparatus to emit the alarm according to detection signals of the X-direction acceleration transducer, the Y-direction acceleration transducer and the gravity sensor. According to the invention, whether a bump and a rollover accident of the electric automobile occur can be detected, once there is a bump or rollover accident, the alarm can be timely given.

The invention provides a battery electric vehicle auxiliary electric box electrical framework. The battery electric vehicle auxiliary electric box electrical framework is characterized in that parts of power battery systems, a motor controller, a power distribution unit, a driving motor, an auxiliary electric box and the like are included; the power distribution unit comprises a main positive relay, a pre-charging relay, a main negative relay, a charging positive relay and a charging negative relay; parts such as power batteries, the main positive relay, the pre-charging relay, the main negative relay, the motor controller and a motor constitute a main power supplying loop; parts such as the auxiliary electric box, the charging positive relay, the charging negative relay, the motor controller and the motor constitute an auxiliary power supplying loop; and the two power supplying loops both can independently drive a vehicle. By adopting the main battery system and the auxiliary batterysystem, the driving mileage of the battery electric vehicle can be increased, faults caused by breakdowns of the batteries can be quickly solved, the auxiliary electric box can be charged at midnightthrough the cheap 'valley electricity' of a power grid, the effect of stabilizing the peak and valley difference of the power grid is achieved, the auxiliary electric box is mounted and dismounted conveniently and rapidly, and the traveling experience of a user can be enhanced.

The invention relates to a method for optimizing the comprehensive efficiency of a fuel cell electric-electric hybrid power supply system. The power supply system uses a fuel cell and a storage battery as power supplies and is connected to a load motor through a direct current-alternating current inverter. The storage battery power supply is composed of a plurality of storage battery cells, and all the storage battery cells are connected through controllable switches. A hybrid power supply is used for obtaining a function relationship between the fuel cell output power conversion efficiency and the fuel cell voltage and power by measuring data of current, voltage, actual hydrogen consumption flow and the like of a particular operating point of the fuel cell, is used for calculating the minimum equivalent output power consumption of the hybrid power supply system and the optimal power distribution of the fuel cell power supply and the storage battery power supply in real time in combination with the efficiency and load working conditions of the storage battery and the fuel cell at the same time, and is further used for calculating the number of series-parallel cells of the storage battery power supply in real time through optimal power distribution, the internal controllable switches are switched, an internal connection structure of the storage battery is changed, and the real-time comprehensive efficiency of the fuel cell and the storage battery is maximized.

A power supply device has a structure in which a bind bar having bent pieces at both ends coupled to end plates disposed at both end portions of a battery stack is divided in a width direction of a side surface of the battery stack, the bent piece of each bind bar is bolted to an outer surface of one of the end plates, the one of the end plates is provided with a stopper wall that prevents rotation of a bent piece fixed with a single bolt, which is fixed to the one of the end plates via one bolt, and the bent piece is fitted to a stopper wall to prevent the displacement of the bind bar.

The invention provides an electrode, a secondary battery, a battery pack, and a vehicle. The electrode is provided with a current collector and an active material-containing layer that is formed on the current collector and contains active material particles. The active material particles include first active material particles including a core particle including a monoclinic niobium-titanium composite oxide and a carbon material layer covering at least a part of a surface of the core particle, and second active material particles including a monoclinic niobium-titanium composite oxide. A particle size distribution diagram obtained by a laser diffraction scattering method for active material particles has a first region corresponding to a particle diameter of a size less than a median particle diameter d50 and a second region corresponding to a particle diameter of a size greater than or equal to the median particle diameter d50. The first particle group contained in the first region contains first active material particles, and the second particle group contained in the second region contains second active material particles. The carbon coating rate of the first particle group ishigher than the carbon coating rate of the second particle group.

A vehicle control apparatus is provided with: a modulator configured to generate modulation signals; a first corrector configured to perform a first correction process in which a center value of the modulation signals is corrected to reduce a loss in the inverter; a second corrector configured to perform a second correction process in which an amplitude shift and a phase shift of the third harmonic signal with respect to the voltage command signals are reduced; and a controller configured (i) to control the first corrector to perform the first correction process if the DC voltage is greater than or equal to first predetermined voltage and (ii) to control the second corrector to perform the second correction process if the DC voltage is less than the first predetermined voltage, when a number of revolutions of the AC motor is less than a predetermined number of revolutions.