418results about How to "Increase charging time" patented technology

A charging apparatus for electrically charging a capacitor storage type power source comprises a switching circuit for turning on/off the charge current, a current detection circuit for detecting the charge current, a voltage detection circuit for detecting the voltage of power source, a constant current control circuit for outputting an error amplifying signal according to the current value, a power control circuit for outputting an error amplifying signal according to the current value, the voltage value-and a power reference value, a constant voltage control circuit for outputting an error amplifying signal according to the voltage value and a voltage reference value, an OR circuit for selecting one of the error amplifying signals and a control circuit for generating a pulse width modulation signal according to the error amplifying signal output from the OR circuit to turn on/off the switching circuit and control the charge current.

The invention relates to the field of electronic consumption, and particularly relates to a battery discharging method of a mobile terminal, a device and a mobile terminal. The method comprises the following steps of: utilizing a constant current to charge a battery, obtaining the internal resistance of the current battery, and obtaining the current charging cut-off voltage of the internal resistance of the current battery; and judging whether the current battery voltage is greater than or equal to the current charging cut-off voltage, if not, returning to the step to obtain the internal resistance of the current battery, and if so, utilizing the constant voltage to charge the battery. According to the mobile terminal and the battery charging method and the device provided by the invention, the mobile terminal charging cut-off voltage of the mobile terminal is adjusted through compensating the voltage consumed by the internal resistance of the battery, so as to prolong the charging time in the constant current step, thereby reaching the aim of rapidly charging with no increase of the cost, the charging speed is improved, the effect of the high current charging battery is more obvious, and the user experience is preferably promoted.

Motor output is suppressed without giving an uncomfortable feeling to a driver. When a target drive torque for driving a wheel is set, a high charge time torque which can be outputted in a high state of charge of a battery and a low charge time torque which can be outputted in a low state of charge of the battery are set based on an accelerator operation amount and a vehicle speed. Subsequently, a difference between the high charge time torque and the low charge time torque is multiplied by a charge correction coefficient corresponding to a state of charge, this calculated value is added to the low charge time torque Tl, and the target drive torque is calculated. Accordingly, the target drive torque can be lowered according to the state of charge, and overdischarge of the battery can be prevented. Further, even in the case where the target drive torque is lowered, the target drive torque can be changed according to the accelerator operation, and an excellent feeling can be given to the driver.

The invention provides a lithium battery pack charging method. According to the lithium battery pack charging method, the diversity of single cells is gradually reduced by adopting four stages of a constant-current pre-charging mode, a constant-current equalizing charging mode, a constant-voltage current-reducing charging mode, and a constant-current trickle charging mode. The relatively poor single cell can be relatively fully charged, and the relatively good cell can be discharged in an equalizing manner by controlling the charging time and charging current of the single cell with a relatively poor performance so as to achieve the effect that the diversity of the single cells is well reduced. The cells can be recovered to a certain degree by stopping charging for a period of time in the constant voltage charging mode, the voltage of the relatively-high-voltage single cell is reduced to a certain degree, so that the charging time can be prolonged for the relatively low voltage cell, and finally the cell is charged with trickle with the minimum charging current. This period of the charging time is prolonged so that the relatively low voltage cell keeps to be changed for a long time. In the whole charging process, the diversity of the single cells is reduced by prolonging the charging time so as to achieve the effect that the cells are relatively fully charged, and the service life of a battery pack is relatively long.

The station-charging trolleybus system for city public traffic includes trolleybus, contact network, double-wire current collecting pantograph, station ground road mark, sensing source and current collecting switch device. The connection mode includes setting the double-wire current collecting pantograph in the top of the trolleybus, contacting the double-wire current collecting pantograph to the contact network in the charging station, setting the current collecting switch device inside the trolleybus, and embedding passive metal parts on the ground of station entrance as the sensing source corresponding to the suspended section of the network access. The present invention has reasonable system constitution, network-free running of the trolleybus, low cost of the trolleybus and attached equipment, safe and reliable operation and simple implementation.

A pixel driving circuit comprises a light emitting diode, a second transistor, a pulse amplitude modulation transistor, a control transistor, a scanning transistor and a pulse width modulation transistor. The light emitting diode comprises an anode and a cathode. The input end of the second transistor is connected with the cathode. The output end of the pulse amplitude modulation transistor is connected with the control end of the second transistor. The input end of the control transistor is connected with the control end of the second transistor and the output end of the pulse amplitude modulation transistor. The output end of the scanning transistor is connected with the control end of the control transistor, the scanning transistor is configured to receive a control scanning signal, andthe time for controlling the scanning signal to reach the threshold voltage of the scanning transistor is the light-emitting time of the light-emitting diode. The output end of the pulse width modulation transistor is connected with the input end of the scanning transistor.

The invention provides a pixel charging method and an electronic device. The method comprises the following steps: determining the polarity of a voltage signal supplied by a multiplexing control circuit to a target data line among M data lines; if the polarity is the first polarity, controlling the duration of the voltage signal supplied to the target data line to be equal to the first charging duration; If the polarity is the second polarity, controlling the duration of the voltage signal supplied to the target data line to be equal to the second charging duration; the first charge duration is longer than the first minimum charge duration required when the sub-pixel is charged by the voltage signal of the first polarity; the second charge duration is longer than that of the sub-pixel whenthe sub-pixel is charged by the voltage signal of the second polarity, and the second minimum charge duration is smaller than that of the predetermined charge duration. The predetermined charge duration is longer than the second minimum charge duration and smaller than the first minimum charge duration. The invention can ensure that the sub-pixel charging time is sufficient.

The invention provides an automatically balancing and adjusting method for charging and discharging series storage battery and a device thereof. The device is formed by a DC/DC inverter, wherein, an input end of the DC/DC inverter is connected with a positive end and a negative end of the storage battery, while N groups of completely same current output ends are respectively connected with positive electrodes and negative electrodes of corresponding N batteries; as long as a high-frequency pulse generator is started to work, the inverter can directly distribute electric quantity according to voltage of each battery to transfer electric quantity from a high-capacity battery to a low-capacity battery, so that voltage and electric capacity of each battery tends to be the same to realize balance. The automatically balancing and adjusting method can avoid the phenomena of over charge and over discharge of the storage battery during the process of charging and discharging, thereby protecting the storage battery, and prolonging the service life of the storage battery.

The invention discloses a TFT-LCD (thin film transistor-liquid crystal display) panel and a driving method thereof and relates to the field of liquid crystal displays. Panel power consumption cannot be increased while requirements of pixel charge rate can be met at high refresh frequency. The TFT-LCD panel comprises a plurality of sub-pixel units crosswise defined by several rows of grid lines and several columns of data lines, each row of grid lines is connected with a GOA (gate driver on array) unit used for providing grid driving signals, a first data line and a second data line which are used for providing data to the sub-pixel units in each column are arranged on two sides of each column of the sub-pixel units respectively, each two adjacent sub-pixel units in each column are respectively connected with the first data line and the second data line, each two GOA units provide the same grid driving signals, and one of the two GOA units providing the same grid driving signals is connected with the grid lines in odd rows while the other of the two GOA units is connected with the grid lines in even rows.

A power storage system for a vehicle includes a battery, a temperature sensor, a battery heater, a charger, and a controller. The battery is configured to supply electric power to a motor for traveling of the vehicle, and configured to be charged with external power supplied from an external power supply. The temperature sensor is configured to detect a temperature of the battery. The battery heater is configured to raise the temperature of the battery. The charger is configured to be connectable with the external power supply, and deliver the external power to the battery and the battery heater, respectively. The controller is configured to perform charge control. The charge control is a control that charges the battery with the external power. The controller is configured to store a map. The map specifies, for each temperature of the battery, a ratio of a temperature-elevating power supplied to the battery heater to a maximum power of the external power at the time when a charging time is minimized. The controller is configured to calculate the ratio, using the map, from the temperature of the battery measured at the time when charging is started. The controller is configured to perform temperature regulation control during charging, using the temperature-elevating power corresponding to the calculated ratio. The temperature regulation control is a control that supplies a part of the external power to the battery heater during charging so as to raise the temperature of the battery.

A device for restricting movement of a vehicle during connection of a charging cable, the vehicle being equipped with a battery chargeable from an external power source via the charging cable, the device including a charging cable connection detecting section that detects that the charging cable is in a connection state, a vehicle body movement detecting section that detects movement of a vehicle body of the vehicle based on moving speed and moving distance of the vehicle, and a braking section that brakes the vehicle when the movement of the vehicle body is detected while the charging cable is in the connection state based on signals from the charging cable connection detecting section and the vehicle body movement detecting section.

The invention discloses a liquid crystal display and a liquid crystal display panel. The liquid crystal display panel comprises a plurality of data lines, a plurality of scanning lines and a plurality of sub-pixels arranged in a matrix form; three rows of scanning lines are arranged between each two rows of the sub-pixels; and a line of data lines are arranged between each line or each two lines of the sub-pixels. According to the technical scheme of the invention, the pixel charging time can be prolonged when the high-quality requirement is met.

A fast charging method, a fast charging system, and a fast charging apparatus for a series battery pack, where the fast charging method including obtaining charge parameters of battery units in a series battery pack, determining, based on the charge parameters, whether there is a differentiated battery unit in the series battery pack, where the differentiated battery unit is a battery unit whose charge parameter is different from a charge parameter of the rest battery units in the series battery pack, and changing the battery units in the series battery pack to a parallel connection when there is a differentiated battery unit in the series battery pack, and performing parallel charging on the battery units. Hence, the fast charging method for a series battery pack can effectively shorten a charging time.