41results about How to "Optimize state of charge" patented technology

A method for operating a vehicle hybrid propulsion system is described. During a vehicle speed control operation where a speed of the vehicle is maintained at a desired speed, in response to acceleration resulting in vehicle speed beyond the desired speed, the acceleration not caused by vehicle operator input, the torque output of an upstream and / or downstream electric energy conversion device provides brake torque to a drive wheel to decelerate the vehicle to the desired speed. The selection of the electric energy conversion device may be based on an operating condition to achieve improved control and efficiency.

The invention provides a charging state monitoring device, comprises a switch monitoring module and a state judging module, wherein the switch monitoring module is used for monitoring the state of a circuit charging switch connected with a battery inside a terminal; and the state judging module is used for determining the battery to be in a negative charging state when the circuit charging switch is in an on state and determining the battery to be in a charging state when the circuit charging switch is an off state. Correspondingly, the invention further provides the terminal and a charging state monitoring method. By means of the technical scheme provided by the invention, a user can be informed of the true charging state of the terminal, and a proper suggestion can be provided to make the user adopt a correct measure so as to optimize the charging state of the terminal and shorten the charging time.

A power transfer circuit for achieving power transfer between stacked rechargeable battery cells is disclosed. The power transfer circuit includes an inductor, a first switch, a second switch and a controller. A loop of the rechargeable battery cell having higher power and the inductor is conducted so that the inductor stores power until the current flowing through the inductor meets the cutoff amount. Then, a loop of the rechargeable battery cell having lower power and the inductor is conducted so that the inductor releases the power saved in the inductor to the rechargeable battery cell having lower power until current flowing through the inductor changes direction. Therefore, balance between the rechargeable battery cells can be achieved.

Various embodiments provide a data driver circuit, a controller, a display device, and a method of driving the same. Overlap driving of overlapping subpixels and fake data insertion driving of inserting a fake image, different from real images, into each of a plurality of lines are performed in a combined manner. Image quality is improved, despite of combined driving.

A method for charging a rechargeable battery (3) of an electric device in different charging steps applying different charging currents is described, said charging steps comprising at least:a first charging step applying a first constant charging current (I1) to the battery (3) while the battery voltage is smaller than a first voltage threshold (V1) and / or while the battery temperature is smaller than a first temperature threshold, said first charging (I1) current being smaller than a second charging current (I2);a second charging step applying said second constant charging current (I2) to the battery (3) while the battery voltage is higher than said first battery voltage threshold (V1) and lower than a second battery voltage threshold (V2) and / or while the battery temperature is higher than said first temperature threshold and smaller than a second temperature threshold;a third charging step applying a constant charging current (I3) to the battery (3), wherein said third constant charging current (I3) is switched on every time when the battery voltage drops to a fourth voltage threshold (V4) and switched off when the battery voltage reaches a fifth voltage threshold (V5), and wherein said third charging step providing said repeated switching on and off the third constant charging current (I3) thereby producing current pulses ends if the length of a current pause (Toff) following said current pulse (Ton) equals or exceeds the length of p·(k−1)−times the preceding current pulse (Ton) with k being the ratio of constant charging current I3 and the constant charging current I1 and p being a defined factor.

A method of mass spectrometry is disclosed comprising alternating between a first mode in which parent ions are analysed and a second mode in which parent ions are fragmented and their fragment ions are mass analysed. In the first mode the parent ions are charge reduced before being analysed, so as to simplify the parent ion spectral data obtained. In the second mode, the parent ions are not charge reduced prior to fragmentation, so that it remains relatively easy to induce the parent ions to fragment. The parent ions are then associated with their fragment ions using the mass spectral data obtained.

The invention relates to a method for the situation-based adaptation of the charging strategy of energy stores of a vehicle having automatic start-stop functionality, comprising at least one energy store having high charge absorption capability, wherein, in a first step, a detection as to whether a current stop-and-go situation is present is carried out on the basis of predefined criteria during the current driving situation of the vehicle and, in a second step, if a current stop-and-go situation has been detected, intensified charging of the energy store is carried out during engine running between two automatically initiated engine-stop phases.

A hybrid vehicle includes a controller. First control is control of an engine and a motor such that the hybrid vehicle travels by switching between a charge depleting mode and a charge sustaining mode. Second control is control of the engine and the motor such that the hybrid vehicle travels in accordance with a travel plan in which the charge depleting mode or the charge sustaining mode is assigned to each travel section of a travel plan route to a destination. The controller controls the engine and the motor such that a state of charge of an electric power storage device becomes higher in the charge sustaining mode in the second control than in the charge sustaining mode in the first control.

The present invention provides a method for charging a NiMH battery, comprising estimating a state of charge of the battery (100), determining an end of charging time based on the estimated state of charge (200), applying a constant charging current with a rate in the range from 0.9 C to 2.1 C to the battery until a threshold voltage is reached (300), upon reaching the threshold voltage, applying a constant charging voltage substantially equal to the threshold voltage to the battery (400) and continuing applying the constant charging voltage to the battery until the end of charging time is reached (500). Furthermore, a battery charger adapted to perform such a method as well as a system comprising such a battery charger and a hearing device powered by a NiMH battery are given.