66results about How to "Speed ​​up the charging process" patented technology

A high-speed shift register circuit is provided. The shift register circuit includes a first transistor supplying a clock signal to a first output terminal, a second transistor discharging the first output terminal, a third transistor supplying the above clock signal to a second output terminal, and a fourth transistor discharging the second output terminal. The gates of the first and third transistors are both connected to a first node, and the gates of the second and fourth transistors are both connected to a second node. The first node is charged by a fifth transistor which is connected between the first node and a first input terminal and which has a gate connected to a second input end.

An electric device, comprising a plurality of detachable battery units 2, 3, 4, each comprising a battery pack 2B, 3B, 4B and a storage mechanism 11, 12, 13 for storing information about the charging and discharging status of the battery. A connection mechanism is provided to electrically connect and disconnect the electric device 1 in response to each battery cell being attached and detached. The device includes a driving mechanism 9 for driving a load, a charging mechanism 5 for charging the accumulators 2B, 3B, 4B with reference to information stored in the storage mechanisms 11, 12, 13 of the installed battery units 2, 3, 4, and The control means 6 controls the electric power supplied from each battery unit 2, 3, 4 to the drive means 9 with reference to the above-mentioned information.

A self-charging strong excitation double transformer double-winding high-gain AC switched reluctance motor converter consists of four phase winding circuits, a rectifying output circuit, and an excitation and charging circuit, wherein two branch windings of each phase winding are in different circuits, the excitation is different, and the power generation output is different, moreover, the outputpolarities of adjacent phase winding circuits are alternated, the alternating current is directly obtained and the isolation, boost and rectification are carried out through the excitation and charging circuit, the output voltage and power are regulated by adjusting the switching tube on the phase winding circuit output side when necessary, the excitation and charging circuit can flexibly obtain the required excitation voltage and charge the storage battery automatically when necessary, the whole converter has the advantages of simple structure, multiple functions, and high intelligent degreeand is suitable for various types of variable speed wind electricity or the field of high-speed switched reluctance motor systems.

The present invention provides a charging control circuit which can compensate the charging for battery with lower voltage in series battery set during charging and enables the terminal voltage of independent battery in series battery set to tend to uniform. The charging control circuit can detect the terminal voltage of the independent battery in series battery set in real time during charging and compensate charging for the battery with lower terminal voltages through a compensation charging circuit, thereby making up the differences of the initial state and the charging/discharging characteristics for independent battery in the battery set, unleashing the loading capability of the independent battery while making sure the independent battery has no over-charging and improving charging and discharging efficacy of the power battery.

The invention relates to an electrode assembly for an electrostatic atomizer, in particular for a rotation atomizer, having an electrode holder arrangement (101) for holding at least one electrode (108) creating an electrostatic field about a symmetrical axis (105), wherein there is a dielectric material for influencing a discharge current component extending in the direction of the symmetrical axis.

The invention discloses a protection circuit of an electric vehicle charging controller. The charging process can be safe and stable by means of the protection circuit. The protection circuit comprises the alternating current input end, the alternating current output end, an on-off device, an overvoltage and undervoltage sampling circuit, an overvoltage comparison circuit, an undervoltage comparison circuit, an overvoltage and undervoltage time delay restoring circuit, an electric leakage sampling circuit, an electric leakage comparison circuit, an electric leakage trigger retaining circuit, an overcurrent comparison circuit, an overcurrent time delay trigger circuit, an overcurrent time delay restoring circuit, a short circuit comparison circuit, a clock pulse signal producing circuit, a clock pulse signal sampling circuit, a clock pulse signal first comparison circuit and an on-off driving circuit. The on-off driving circuit drives the on-off device according to signals output by the overvoltage and undervoltage time delay restoring circuit, the electric leakage trigger retaining circuit, the overcurrent time delay trigger circuit and the clock pulse signal first comparison circuit to connect or disconnect the alternating current input end with the alternating current output end. The protection circuit is particularly suitable for being used in cooperation with an automobile charging controller.

The invention provides core-shell-structure lithium manganate capable of improving the high temperature resistance performance, and a synthesis method of the core-shell-structure lithium manganate, and provides a lithium manganate compounding material which is relatively high in capacity and high in high temperature cycle performance. The compounding material is a core-shell-structure lithium manganate positive material of a lithium ion battery and is expressed as LixMn2O4.yA (wherein x is more than or equal to 1 and less than or equal to 1.3, and y is more than 0 and less than or equal to 0.1); the shell A is made from a lithium ion battery positive material having the electrochemical activity and the high temperature resistance performance and can be expressed as one of LiNi0.5Mn1.5O4, LiCo0.5Mn1.5O4, LiNi(1-a-b)CoaMnbO2(wherein a is more than 0 and is less than 1.0, and the b is more than 0 and less than 1.0), and LiNi(1-c-d)CocAldO2(wherein c is more than 0 and less than 1.0, and d is more than 0 and less than 1.0); and the core part is made from a material expressed as LixMn2O4. The specific surface area of the compounding material is 0.2-1.2m<2>/g, and D50 is 7-18mu m.

The invention provides a quick charge method and device for a secondary battery. The method comprises the following steps: S1, current or voltage pulse is applied to a charge battery for a certain time, the index parameters of the battery are measured in real time, if each index parameter is less than the preset value, current pulse or voltage pulse is continuously applied, and if any one of the index parameters is greater than or equal to the preset value, charging is stopped for a certain time; S2, 0.001-1C of current is applied to the charge battery, if each of the index parameters is less than the preset value, the step S1 is repeated through using current or voltage pulse smaller than that of the step S1, and if any one of the index parameters is greater than or equal to the preset value, the charging process is ended. The invention further provides a device corresponding to the method, which comprises an applying module and an adjustment module, and through the adoption of the charge method provided by the invention, the charge battery can be protected more efficiently, so that the charge efficiency of the charge battery is improved.

The invention discloses a rapid lithium battery charging method for a DC brushless motor driving system. The rapid lithium battery charging method comprises the following steps: (1) constant-power charging stage; and (2) linear charging stage. By adopting the mode, the rapid lithium battery charging method for the DC brushless motor driving system has the advantages that the charging process is accelerated, and the heat dissipation in the charging process is reduced, so that the charging can be carried out in relatively short time, and further the waiting time of equipment is shortened when a battery is charged and the like, and the scheme has a wide market prospect on the popularization of the rapid lithium battery charging method for the DC brushless motor driving system.

The invention relates to a high-low-temperature in situ XRD analyzing and testing method for a lithium iron phosphate electrode material. The method comprises the steps of making an in situ test program obtain an XRD pattern of lithium iron phosphate in a high-temperature test mold or low-temperature test mold every thirty seconds by means of an X-ray light source of an ordinary laboratory, and setting the observation angle of a two-dimensional area detector XRD to be 17 degrees; conducting the process 1000 times to finish the XRD test program. According to the method, in situ XRD representation of the electrode material can be achieved without battery detachment, and research on influences of temperature variables on the electrode material is achieved at the same time. The method reveals that the low-temperature degradation property of the lithium iron phosphate electrode material is caused by lattice self-hold and reduction of ionic migration and diffusion rate under low temperature. Therefore, quick migration of lithium ions and increase of charge or discharge depth under high overpotential or strong polarization can still not be achieved.

The invention discloses a conversion circuit for series charging and parallel power supply. The conversion circuit comprises a conversion module and a voltage reduction module, a battery charging input end of the conversion module is used for being connected with a battery power supply end of external power supply, a voltage input end of the conversion module is used for being connected with the battery power supply end of the external power supply, an output end of the conversion module is used for being connected with an input end of the voltage reduction module, and an output end of the voltage reduction module is connected with an external load. The conversion module is used for enabling an internal battery to automatically switch a series charging state or a parallel power supply state, and the voltage reduction module is used for carrying out voltage stabilization and direct connection on the output voltage of the conversion module and then outputting the output voltage to a load. And when the output voltages of the first battery and the second battery are not consistent, mutual charging is avoided, and the first switching unit and the second switching unit cut off the output of the battery with the lower output voltage, so that the charging and discharging voltages of the first battery and the second battery are consistent.

The invention discloses a battery pack temperature adjusting device, and aims at solving the problems that a battery pack is poor in charge and discharge performance under the conditions of a high temperature and a low temperature. According to the technical scheme for solving the problem, the battery pack temperature adjusting device mainly comprises the battery pack and a battery box sleeving the outer side of the battery pack, wherein the battery pack is provided with a control circuit and a temperature sensing element; the control circuit is electrically connected with the temperature sensing element; a diversion outlet is arranged in the battery box; a refrigeration piece electrically connected with the control circuit is arranged between the battery pack and the battery box and comprises a positive temperature control surface and a reverse temperature control surface; the positive temperature control surface faces the battery pack; and airflow formed on the positive temperature control surface passes through the battery pack and then flows outside from the diversion outlet. By the battery pack temperature adjusting device, the continuous charge and discharge time of the battery pack is prolonged.

The invention discloses a pixel driving circuit, an array substrate and a display panel. The pixel driving circuit comprises a data cable, a scanning line, a first pixel circuit, and at least two first switches; the input ends of the at least two first input switches are all connected to the data cable, the respective output ends of the at least two first input switches are all connected to the same pixel electrode, the respective control ends of the at least two first switches are all connected with the scanning line so as to quicken the charging process of the first pixel electrode, and thus the problem that the display quality of a display image is lowered caused when the first pixel electrode is not charged sufficiently is solved.

The invention relates to the technical field of electric vehicle driving, in particular to an electric vehicle. Based on a modular battery cell group, a battery management system, a bidirectional energy conversion device and a bus system, independent use and combined use of different battery packs can be realized, the form of the battery pack can be flexibly set, the expandability and the flexibility of the electric vehicle battery system are improved, a user can select and configure the number and model of the battery packs according to requirements, so that the use cost of the electric vehicle battery system can be reduced, waste of battery resources is avoided, the difficulty of electric vehicle charging or battery replacement is reduced, the electric vehicle charging and battery replacement speed is increased, the electric vehicle battery system is more convenient to maintain and overhaul, and the use experience of a user can be improved. In an electric vehicle framework provided by the invention, each battery pack can work independently, plug and play is realized, and idle waste of battery resources is reduced by reasonably configuring the number of the battery packs.

A speed-up charge pump includes a first charge pump for receiving an up signal and a down signal in digital form to produce a first voltage control signal at an output node. Further, at least one speed-up phase detector includes a first circuit path to receive the up signal and delay the up signal by a predetermined delay as a delay up signal and operate the up signal and the delay up signal by AND logic into an auxiliary up signal; and a second circuit path to receive the down signal and delay the down signal by the predetermined delay as a delay down signal and operate the down signal and the delay down signal by AND logic into an auxiliary down signal. A second charge pump is respectively receiving the auxiliary up and down signals to produce a second voltage control signal also at the output node.