30results about How to "Reduce charging speed" patented technology

A multi-phase current supplying circuit comprises a converter (2), an intervening circuit (3a), an inverter (4), a control circuit (6) and a lightning arrester (7). A power supply system (1) is connected to the converter (2) via the lightning arrester (7), whereby an AC voltage (Vin) is rectified. The intervening circuit (3a) has a capacitor (31) and a shunt (33) connected in parallel thereto. The shunt (33) comprises a series connection of a diode (DS), a resistor (RS) and a capacitor (CS), and a direction extending from the anode of the diode (DS) toward the cathode thereof is coincident with a direction extending from the higher potential side of a smoothing capacitor toward the lower potential side thereof.

The invention relates to a motor vehicle (10), which comprises: a high-voltage electrical system (19) and a multi-battery system (11), which consists of a plurality of energy stores (12, 13) for supplying energy to an electric drive motor (21). The problem addressed by the invention is that of increasing the electric range of the motor vehicle (10) in a simple manner. This problem is solved in that each battery is connected to the high-voltage electrical system (19) by means of a separate switching unit, and a control device (20) detects the state of charge of each energy store and selectively connects the energy stores to the high-voltage electrical system (19) and / or disconnects the energy stores from the high-voltage electrical system in dependence on the state of charge of the energy stores, including during driving.

The invention discloses a mobile phone wireless charger with an overcharge protection device, which belongs to the field of mobile phone chargers. A mobile phone wireless charger with an overcharge protection device includes a wireless charger body, and a wireless charger body is installed on the bottom of the wireless charger body. Coil, the inner wall of the wireless charger body is fixedly connected with a support plate, and the coil is located inside the support plate, and the inner wall of the support plate above the coil is fixedly connected with a mounting plate, which sends signals to the wireless charger through the mobile phone battery overcharge protection board , so that the gear rotates 90°, and then the through hole rotates to block the magnetic induction line, so that the mobile phone will not generate current, thereby protecting the battery of the mobile phone. At the same time, if the mobile phone is seriously heated during charging, the heat will make the memory metal The sheet changes from a curved phase state to a vertical phase state, so that the control board is pushed into the through hole to reduce the magnetic flux, which can reduce the current in the mobile phone, slow down the charging speed, and protect the overcharge at the same time. Realized overheating protection.

A multiphase current supplying circuit includes a converter, an intervening circuit, an inverter, a control circuit and a lightning arrester. A power supply system is connected to the converter with the lightning arrester interposed therebetween, and the ac voltage is rectified. The intervening circuit includes a capacitor and a bypass connected in parallel thereto. In the bypass, a diode, a resistor and a capacitor are connected in series, and the direction from an anode to a cathode of the diode corresponds to the direction from a high potential side to a low potential side of the smoothing capacitor.

A delay circuit using a capacitor with an MOS structure as a delay component, includes a clamp circuit operating a clamp operation and a clamp release operation in response to levels of an input signal, the clamp circuit clamping a voltage applied to the capacitor to a specified charging initiation voltage during the clamp operation; a charging circuit charging the capacitor with a constant current when the clamp operation is released; and a delayed signal producing circuit producing a delayed signal when the voltage of the capacitor being charged reaches a voltage of a predetermined value.

A method of charging electric vehicles includes charging a high-voltage battery unit with power supplied through two or more inlets. The method includes determining whether the charge amount of the high-voltage battery unit has reached a predetermined charge amount. The method includes charging the high-voltage battery unit with power supplied through one of the two or more inlets and controlling a first switching unit such that power supplied through the remaining inlets is provided to an application component when the charge amount of the high-voltage battery unit has reached the predetermined charge amount.

The invention discloses a supercapacitor-based power supply system. An energy detection module detects current electric quantity information of a supercapacitor in real time; a charging management module transmits a charging request signal to a micro control unit (MCU) when electric energy transferred in a wireless energy transfer way is detected; the MCU acquires the current electric quantity information of the supercapacitor from the energy detection module; when the electric quantity is smaller than a threshold value, the MCU controls the charging management module to charge the supercapacitor; the supercapacitor is connected with a power management module; the MCU is integrated with a wireless communication function; the power management module outputs a stable voltage and a variable voltage; the stable voltage serves as the working voltage of the MCU; and the variable voltage supplies power to external electric equipment. The supercapacitor serves as an energy storage element of a power supply system which is required to work for a long time, and is divided into two paths for supplying the power to a load with a fixed voltage and a load with a variable voltage; the power efficiency is greatly improved; and the problem of supplying the power to implantable medical equipment or the equipment which cannot be contacted directly and is required to work for a long time is solved by charging in a wireless energy transfer mode.

The invention discloses a method for adjusting a charging speed of an electronic product. A charging management chip is arranged in the electronic product. The method comprises the steps as follows: when a charger is connected with the electronic product, the charging management chip detects whether the charger is a fast-charging charger or not; if the charger is the fast-charging charger, the charging management chip starts a charging mode and a selection interface of the charging mode is displayed in a screen of the electronic product; the charging mode is set in the electronic product in advance and is connected with the charging management chip; at least two charging speeds are preset in the charging mode; and a user achieves adjustment on the charging speed of the electronic product by selecting different charging speeds in the selection interface of the charging mode. The invention further discloses the electronic product with a function of adjusting the charging speed. The electronic product comprises the charging management chip and the charging mode, wherein the charging management chip is arranged in the electronic product; the charging mode is set in the electronic product and is connected with the charging management chip; and at least two charging speeds are set in the charging mode.

The invention discloses an intelligent state data storage type solar street lamp control system. -It is composed of controller and program control part. The controller includes: a main control unit (1), a battery charging control module (2), a battery power supply control module (3), a working mode clock display module (4), a temperature acquisition module (5), and a data transmission module (6). The system controls the battery charging control module (2) and the battery power supply control module (3) to charge or supply power by judging whether it is day or night, collects and stores information, and realizes the connection between the present invention and the computer through the data transmission module (6). The overall realization of the data acquisition function, data storage function, data transmission function, time setting function and timing work mode function, with a variety of functions, easy to debug, can choose a variety of mode switching, can provide a variety of data when the street lamp is running, convenient System troubleshooting.

The invention discloses an intelligent device and a charging method of the intelligent device. The method comprises the following steps: charging by a first charging strategy; judging if the system time of the intelligent device is at a preset charging time; when it is at the preset charging time, charging by a second charging strategy, wherein the charging power of the first charging strategy is more than the charging power of the second charging strategy. The embodiment of the invention provides the charging method of the intelligent device; through adding a sleep charging function to the intelligent device, the second charging strategy can be executed to reduce the charging speed for user has no requirement on charging speed at that time when it is under the preset charging time, so ass to delay the battery aging and improve the battery safety; besides, the method also pays attention to the charging speed demand and the battery protection, thus the charging flexibility is improved and the user experience is promoted.

The invention discloses a charge-discharge equalization control circuit of a battery pack. The charge-discharge equalization control circuit comprises a charge-discharge circuit, a voltage detection circuit, a voltage comparator, a controller, a current-sharing circuit and a discharge switch. An input end of the charge-discharge circuit is connected with a power line, and an output end of the charge-discharge circuit is connected with at least two battery single bodies respectively. An input end of the voltage detection circuit is connected with at least two battery single bodies respectively. An input end of the voltage comparator is connected with an output end of the voltage detection circuit. An input end of the controller is connected with the voltage comparator, and an output end of the controller is connected with the charge-discharge circuit. The current-sharing circuit is connected with the charge-discharge circuit and the controller. The discharge switch is located in the charge-discharge circuit. The charge-discharge equalization control circuit can ensure charging equalization between the battery single bodies through a replacing mode and a current-sharing mode in the charging process, can control the high-voltage battery single bodies to charge the low-voltage battery single bodies, and further ensures the mutual equalization between the battery single bodies in the discharging process.

The invention discloses a sensitive amplifier circuit, comprising: nine PMOS transistors, seven NMOS transistors, two capacitors, two inverters, an operational amplifier, a voltage-controlled current source and a storage unit; the first capacitor and the The second capacitor controls the compensation current of the first PMOS transistor and the second PMOS transistor; the storage unit current and the first voltage-controlled current source current affect the compensation current through the first capacitor and the second capacitor, realizing the function of dynamically changing the compensation current. The invention can greatly increase the speed of the comparison current and realize a high-speed sensitive amplifier circuit.

The invention discloses a charging equalization control circuit of a battery pack. The battery pack comprises at least two battery monomers. The charging equalization control circuit comprises a plurality of charging circuits connected with power lines and at least two battery monomers respectively, a voltage detection circuit connected with at least two battery monomers respectively, a voltage comparator connected with the voltage detection circuit, a controller connected with the voltage comparator and the charging circuits, and a current equalization circuit connected with the charging circuits and the controller. The charging equalization control circuit sets different charging modes or charging gears for the charging circuits, controls a charging situation according to voltage among the battery monomers in the battery pack, realizes more equalization among the battery monomers, and can reduce higher charging speeds of the battery monomers, so that a purpose of equalization charging of the battery monomers in the battery pack can be achieved.

A drive unit includes a first transistor, a second transistor, a current source that is connected to a high-potential-side electrode of the first transistor, and delivers constant current, a current control circuit configured to perform control to start of charging of the gates of the first and second transistors using the current source, and a gate charge circuit that charges the gates of the first and second transistors, separately from the current source.