1384 results about "Residual charge" patented technology

The invention provides a method and system for estimating future average power consumption of an electric automobile. Historical average power consumption is calculated and is used for estimating the future average power consumption, so that timely and accurate future average power consumption information is provided for a driver. The invention further provides a method and system for estimating the remaining driving range of the electric automobile. The remaining driving range of the electric automobile is acquired according to acquired remaining capacity and the electric automobile future average power consumption which is obtained through the method and system for estimating the future average power consumption of the electric automobile. Accordingly, the timely and accurate information of the future average power consumption and the remaining driving range can be given to the driver, and the driver can plan routes and choose the charging time conveniently. The acquired remaining driving range of the electric automobile is subjected to saturation processing and one-order inertia filtering processing, so that the circumstance of high-low mutation does not occur to the finally-obtained value of the remaining driving range of the electric automobile, and the remaining driving range under the current situation is truly reflected.

An active-matrix liquid crystal display device has pixels arranged in a matrix which each include a thin film transistor (TFT) as an active element. When the device is in a power-off state, TFTs in all the pixels are switched on, and all horizontal switches are turned on so that all data lines are supplied with a potential equal to the potential of common electrodes of the pixels. This forms a discharging path for discharging residual charge in all the pixels, and the discharging path can instantaneously discharge the residual charges.

A manufacturing method for manufacturing a solar panel including a solar cell and an outer housing and an inspection method for inspecting a solar panel generating system, include a step of performing one of a withstand voltage test and an insulation resistance test between a live electrical section electrically connected to the solar cell and a conductor section of the outer housing, and thereafter a step of applying a voltage between the live electrical section and the conductor section. In this way, a residual charge left subsequent to the withstand voltage test or the insulation resistance test is reliably removed within a short period of time.

The invention provides an LCD (Liquid Crystal Display) panel drive circuit and method as well as a display unit. The LCD panel drive circuit comprises a control unit and a charge release module. The LCD panel drive method comprises the steps that a control signal is generated by the control unit when the LCD panel is shut down and output to the charge release module; and the charge release module leads residual charge on a pixel electrode and a public electrode to a ground terminal according to the control signal. According to the LCD panel drive circuit and method as well as the display unit provided by the invention, charge on the pixel electrode and the public electrode is led to the ground terminal when the LCD panel is shut down, so that no residual charge is left in the whole panel, the occurrence of abnormal pictures in shutdown is eliminated, the polarized probability of liquid crystals is reduced simultaneously, and the service life of the LCD panel is prolonged.

The invention discloses a method and a device for full balance control of a power battery of an electric automobile. In the method, an analog-digital conversion module of a microcontroller is used for acquiring single body voltage parameters of the power battery and sequencing the single body voltage parameters of the power battery; the microcontroller is connected with a battery management system to acquire dump energy information and battery balancing threshold of the current battery management system; and the method for the full balance control of the power battery of the electric automobile is implemented by the microcontroller according to the actual condition of the dump energy, or selecting an active balancing mode of starting an active balance control circuit and using an on-vehicle battery to charge the lowest battery single body, or selecting a passive balancing mode of starting a passive balance control circuit and using a balancing resistor to discharge the highest batterysingle body, or selecting a mixed balancing mode of using the two modes at the same time. By using the method and the device, a reasonable balancing strategy is established according to the dump energy of the battery, so that the problem of inconsistency of charge and discharge of the power battery is effectively solved and unnecessary electric energy consumption in balancing is effectively reduced.

In a vehicle having a battery and a generator, when a residual charge amount of the battery is reduced to a first predetermined amount, a power-generation command is output to a generator, and the battery is charged by the generator driven by an engine. When the residual charge amount is reduced to a second predetermined amount lower than the first predetermined amount, plural air-conditioning electrical devices are stopped. Thereafter, when the residual charge amount of the battery is increased to be larger than the second predetermined amount, the electrical devices are started at different start times.

The invention relates to a monitoring system for the electric quantity of a lithium battery. The monitoring system comprises a state monitoring unit, an electric quantity recording unit, an impedance tracking unit, an arithmetic element and the lithium battery, wherein the state monitoring state monitors the current output voltage, the output current and the ambient temperature of the lithium battery; the electric quantity recording unit records the input electric quantity during the charging of the lithium battery and the output electric quantity during the discharging of the lithium battery; the impedance tracking unit calculates the internal impedance of the lithium battery after the charging of the lithium battery is completed every time; the arithmetic element calculates the remaining electric quantity and the remaining working hour of the lithium battery according to input data; the system monitors the whole charging/discharging process of the lithium battery, takes a complete charging and discharging time as a period, dynamically updates battery capacity based on an integral method and eliminates the influence of the variation of the battery capacity; after the battery is fully charged every time, the impedance tracking unit of the lithium battery is started so as to update the internal resistor of the lithium battery; finally, the remaining electrical quantity and the remaining working time of the lithium battery are calculated by combining the environment temperature, the loading and the like.

The utility model discloses a detecting method of battery capacity, comprising the following steps: smoothed value of battery voltage can be get through wave filtering of sampling value of the battery voltage; current battery threshold is confirmed according to the prior business mode; promoting information is done according to the comparison result for the smoothed value of battery voltage and the battery threshold and the information is used for promoting current battery capacity. The utility model has the advantages of more accurately weighing rest capacity of the battery, remedying the failure that the rest capacity of the batter is confirmed through only using single sampling value of the battery voltage and single battery threshold for prior art and bringing good using experience for users through the embodiment, current battery threshold which is confirmed according to current business mode and current battery capacity which is get through comparison between the smoothed valve of the battery voltage and the battery threshold through wave filtering of a plurality of sampling value for battery voltage.

The invention discloses a battery equalizing device used for equalizing multiple battery units in a battery pack by utilizing an equalizing resistance, which comprises a controller, a resistance switching circuit and the equalizing resistance, wherein the resistance switching circuit is used for connecting the battery units specified by the equalizing resistance and the controller in parallel under the control of the controller; and the controller is used for collecting the voltage value of each battery unit in the multiple battery units, determining the residual electricity quantity of each battery unit according to the collected voltage and controlling the resistance switching circuit to connect the equalizing resistance with the battery unit in parallel under the circumstance that one battery unit meets the switching conditions, wherein the switching condition is as follows: the residual electricity quantity of the battery unit is higher than the specified value of the average residual electricity quantity of the multiple battery units. The battery equalizing device can intelligently equalize the battery units, effectively reduce the difference between the battery units and cansave the volume and the cost of equipment.

The invention provides a method of a self-learning OCV (open circuit voltage)-SOC (system on a chip) curve and a calculating method of secondary battery hopower state SOC value. With the calculating method, SOC value calculated through the calculating method can accurately display dump energy of batteries. Different from conditions that non real time and inaccuracy of battery internal resistor measurement in the existing technology lead to inaccuracy of self-learning OCV-SOC curve, the method of the self-learning OCV (open circuit voltage)-SOC(system on a chip) curve and the calculating method of secondary battery hopower state SOC value calculate internal resistor value r in a set time through measuring the most value of battery current and battery terminal voltage in a preset time in self-learning OCV-SOC curve so as to calculate open-circuit voltage during the preset time. Battery resistor can discharge with battery and time change are fully considered, so that battery internal resistor can be accurately traced during charging and discharging process of batteries, evenly-distributed OCV-SOC corresponding points can be acquired, and more accurate OCV-SOC curve can be acquired.

Disclosed in the present invention are a method and a device for controlling power saving. The method comprises: monitoring an amount of remaining charge in a battery of a mobile device; and automatically adjusting a operation of the mobile device according to the monitored amount of remaining charge of the battery, the automatic adjusting comprising at least one of: changing a current value of a device parameter of the mobile device according to the monitored amount of remaining charge, and determining whether to turn off a user application and/or a device function that is currently active on the mobile device according to the monitored amount of remaining charge, so as to reduce the consumption of electricity from the battery.

The invention discloses an electric quantity detection method for a chargeable battery. The method mainly comprises the following steps: detecting a change electric quantity of a chargeable battery at present time segment to updating an accumulated change electric quantity, and according to a battery absolute capacity and the accumulated change electric quantity, obtaining a battery actual residual electric quantity at present time segment; according to the battery actual residual electric quantity and the battery absolute capacity, updating present internal resistance potential drop of the battery; according to the present internal resistance potential drop, determining capacity correction threshold-voltage; according to the capacity correction threshold-voltage and the accumulated change electric quantity, calibrating a battery full charge available electric quantity and a battery residual available electric quantity at next time segment. The electric quantity detection method has the advantages of high precision, convenience of realization and the like. Correspondingly, the invention also discloses an electric quantity detection method for a chargeable battery. The apparatus comprises a detection module, an internal resistance potential drop updating module, a threshold-voltage calibration module and an electric quantity calibration module, and has the advantages of convenient operation, high measuring precision and the like.

The invention discloses a method for prolonging the service life of a mobile terminal in a low battery mode and the mobile terminal. The mobile terminal comprises a battery (2), a voltage detection module (6), a voltameter module (5) a CPU (4) and a display screen (3). The voltameter module (5) is used for detecting the power consumption electric current (I) and dump energy (Q) of the mobile terminal (1) in real time. The voltage detection module (6) is used for detecting the battery voltage in real time. The CPU (4) is used for changing the auto power-off voltage threshold value of the mobile terminal (1) when the dump energy (Q) is judged to be smaller than a preset electric quantity threshold value (Q0) and the power consumption electric current (I) is larger than a preset current threshold value (I0). The CUP (4) is also used for displaying prompt information that the mobile terminal is in low battery through the display screen (3) when the battery voltage value is judged to range between a second auto power-off voltage threshold value (V2) and a first auto power-off voltage threshold value (V1).

This display module performs a high quality display by preventing the effect resulting from a residual charge of a data signal in the previous scanning remaining in a capacitor of a pixel circuit.

The display module is provided with the pixel circuit having an active element that selects a pixel by a horizontal scanning signal supplied from a scanning line GL every intersection unit of multiple scanning lines GLs arranged in a matrix within a display region AR on a substrate SUB, a data holding element that holds a data signal supplied from the data line by the turn-on of this active element, and an organic light emitting diode OLED that emits light by the current supplied from a current supply line CSL in accordance with the data signal held in the data holding element, and a reset circuit RST that recovers at least either a capacitor CPR or a data line DL of the pixel circuit to an initial condition is provided before data for the pixel that corresponds to the next scanning line is sent to the data line after the scanning of the scanning line before one is finished.

The application of a non-zero voltage offset to rotating capacitors 1111 and 1112 permit the use of a single positive voltage supply. However, the precharging of the rotating capacitors 1111 and 1112 is power inefficient. A power efficient and low-noise precharging operation is realized through the sharing of the charge on a feedback capacitor 1075 and 1080 that is significantly larger than the rotating capacitors 1111. Once a precharging operation is complete, the charge on the feedback capacitor 1075 and 1080 is refreshed from its residual charge level (rather than zero charge level) to a desired charge level.

The invention particularly discloses a full-stage power lithium battery equalization method and device based on the absolutely chargeable and dischargeable capacity. The equalization device comprises two parts, namely, a first part referring to an energy source switching device, and a second part referring to a charging device, wherein the first part provides a standard direct-current power supply voltage for the second part. The equalization method comprises the steps of: (1) collecting data of single batteries through a battery management system of each battery; (2) estimating the values of surplus capacity and full capacity of each single battery; (3) calculating value of the absolutely chargeable and dischargeable capacity of each single battery; (4) realizing charging equalization; and (5) realizing discharging equalization. Through the estimated battery voltage value in a charging stage and the estimated battery surplus capacity value in a discharging stage, the full-stage power lithium battery equalization method and device based on the absolutely chargeable and dischargeable capacity, disclosed by the invention, not only solve the problem that all batteries can not be fully charged in the charging stage, but also solve the problem that the discharge capability is insufficient due to low capacity of certain batteries in the discharging stage.

A discharge control apparatus for discharging a residual charge that accumulates in a smoothing capacitor interposed between a direct current main power supply and an inverter, which performs a voltage conversion between a direct current power and an alternating current power, and remains in the smoothing capacitor when a connection between the inverter and the main power supply is cut, the discharge control apparatus. The discharge control apparatus having a backup power supply and a discharge control unit that is provided independently of a driver circuit for applying a switching control signal to a switching element constituting the inverter in order to operate the switching element in a saturation region, and that generates a discharge control signal for operating the switching element in an active region and applies the generated discharge control signal to the switching element.

A method for driving a display device includes sequentially applying a gate turn-on voltage to respective gate lines of the device during successive image display periods thereof, applying a respective one of a plurality of successive data signals, each corresponding to a respective one of the gate lines, to a plurality of data lines of the device while the gate turn-on voltage is being applied to the corresponding gate line, applying the gate turn-on voltage to all of the of gate lines of the device during successive vertical blanking periods of the device that alternate with the image display periods, and applying a dummy data signal to the data lines while the turn-on voltage is being applied to the gate lines. The dummy data signal forcibly discharges any residual charges in the pixel storage capacitors to prevent the occurrence of residual images in the display.

The invention provides a gate driver on array (GOA) circuit based on an oxide semiconductor thin-film transistor. The electricity leakage can be prevented and reliability of the GOA circuit can be improved. A gate and a source electrode of a fortieth thin-film transistor (T40) in a first pull-down module (400) are in short circuit, thereby avoiding crosstalk current occurrence caused by a GOA unit circuit during an inactive period; a gate and a drain electrode of a seventy-fifth thin-film transistor (T75) in a pull-down holding module (600) are electrically connected to a first node (Q(N)), thereby preventing the influence on pull-down holding of the first node (Q(N)) by a constant-voltage high level (DCH); and a clearing and resetting module (700) is arranged and is used for carrying out clearing and resetting on the first node (Q(N)) before generation of each frame of picture, thereby eliminating the interference on the GOA circuit by residual charges and guaranteeing the normal output and normal picture display of the GOA circuit.