288results about How to "Ensure charging safety" patented technology

Presented herein is a shunted MTJ sensor formed of a plurality of electrically connected MTJ cells for measuring magnetic fields and currents and its method of fabrication. To provide stable single domain magnetic moments of the MTJ cells and to ensure that the magnetic moments return to a fixed bias point in the absence of external magnetic fields, the cells are formed of sufficiently small size and with elliptical cross-section of aspect ratio greater than 1.2. To eliminate the possibility of ESD damage to the cells, they are protected by a parallel shunt, formed as a trace of sufficiently high resistance that directs accumulated charges harmlessly to ground while bypassing the cells.

The invention discloses a V2G technology-based power distribution scheduling control method for electric vehicles. According to the power distribution scheduling control method, besides that the influences of charge and discharge power of the electric vehicles are considered, the limiting factors of the capacity of a power distribution network, technical conditions of the electric vehicles and the like are also considered; the traffic factors of drive routes, charging/discharging access and the like of the electric vehicles are further considered; optimized charging and discharging scheduling strategies, for the electric vehicles, conforming to the reality are comprehensively determined; charging and discharging of the electric vehicles are controlled by a V2G system; and the power distribution scheduling control on the electric vehicles is achieved. The embodiment and related data show that according to the V2G technology-based power distribution scheduling control method for the electric vehicles, the negative effects on the system reliability due to the fact that the electric vehicles are accessed on a large scale can be effectively improved; the load utilization rate of the power distribution network is improved; the load peak and off-peak difference of the power distribution network is reduced; and improvement of power distribution scheduling economical efficiency of the electric vehicle and power distribution network operation economical efficiency is helped.

The embodiment of the invention discloses a method for identifying the type of a charger and a device thereof. A divider resistance is connected in series between the output terminal of power supply of electric equipment and a second pin of a universal serial bus Mini_USB-A type interface. The method for identifying the type of the charger includes: the second pin and a third pin of the Mini_USB-A type interface are set in a high-impedance state when detecting that the charger is accessed; a measuring point is set between the Mini_USB-B type interface of the charger and the divider resistance, and the voltage at the measuring point is measured; the type of the charger is identified according to the measured result. The electric equipment can choose different currents according to the type of the charger, thus fully playing a roll of current supplying of various chargers while ensuring the safety of charging, and promoting the feelings of customers.

The invention discloses a wireless charging, alignment and metal foreign body detection system of an electric automobile and a method thereof. The detection system comprises a transmitting coil, a receiving coil, a probe, a signal conditioning module and a control module connected with the signal conditioning module, wherein the transmitting coil is connected with the output end of a wireless charging and transmitting device on the ground surface of a parking lot, the receiving coil is connected with the input end of a wireless electric energy receiving device of an electric automobile chassis and is mutually coupled with the transmitting coil, and the probe is laid on the surface of the transmitting coil and is mutually coupled with the transmitting coil and the receiving coil. The probe is of an axis-symmetric structure and is composed of two coils equal in size and turn number and opposite in winding direction. The probe is consistent with the boundary of the transmitting coil in size. The signal conditioning module is used for receiving voltage signals output by two output ends of the probe and conducting amplification, filtration and peak-holding processing on the two signals output by the two output ends. The control module is used for obtaining the difference of the two received voltage signals and comparing the obtained voltage signal difference value with a preset voltage threshold value.

The invention discloses a charging current safety control method. The method includes the steps of 1, acquiring a charging curve, to be specific, testing and sampling status changes in a battery charging process so as to obtain the charging curve; 2, in a constant-current charging state, monitoring ambient temperature, battery status, actual output capacity of a charger and actual output capacity of a power grid in real time, and adjusting charging current according to the acquired charging curve; 3, in a constant-voltage charging phase, adjusting the charging current according to an actual output of the charger; 4, in a trickle charging phase, acquiring the current battery status and charging current under the temperature environment according to the charging curve acquired in the step 1; 5, if the charging current is less than a preset threshold, ending charging, and stopping the charger from outputting. The method has the advantages that the charging current can be monitored in real time, real-time adjustment is performed according to comprehensive set current demands such as temperature environment, battery status and charger output, and charging safety is effectively guaranteed.

The invention provides a battery system, and belongs to the technical field of batteries. The battery system comprises a case, a plurality of sections of battery cells, a temperature collecting probe, a BMS (battery management system), a heating and refrigeration assembly, a liquid flowing pipeline, a heat conduction medium and a water pump, wherein the liquid flowing pipeline passes through a gap formed among the plurality of sections of battery cells; the water pump drives the heat conduction medium to realize circulation flowing inside the pipeline; the temperature collecting probe and the heating and refrigeration assembly are electrically connected with the BMS; the BMS controls the heating and refrigeration assembly to work according to the temperature information feedback by the temperature collecting probe; the heating and refrigeration assembly and the liquid flowing pipeline perform heat exchange through a water cooling head so as to realize the heating and the refrigeration on the heat conduction media inside the liquid flowing pipeline; the whole temperature control system is directly controlled by the BMS. The battery system is provided with the temperature collecting probe, the heating and refrigeration assembly and the BMS; the environment temperature of the battery cells is regulated through controlling the temperature of the heat conduction media inside the liquid flowing pipeline, so that the battery cells always work in a set temperature range.

The invention provides a detection device and system of a charging pile and relates to the technical field of intelligent charging nets. The device comprises a detection module, a wireless communication module and a server. The detection module is connected with the charging pile and used for measuring charging data of the charging pile. The wireless communication module is connected with the server and used for sending the charging data to the server. The server is used for establishing a real-time mode according to the charging data and comparing the real-time mode with a standard mode. According to the invention, working conditions of the charging pile are detected through comparison results, so working states of the charging pile are monitored in real time, a manager is enabled to timely deal with abnormal conditions of the charging pile, charging safety and user experience are ensured.

An intelligent safety monitoring device for a charging pile, characterized in that: the charging pile monitoring device includes a DSP processor, an electronic voltage transformer A, an electronic current transformer A, a temperature sensor A, a temperature sensor B, and an electronic voltage transformer B , electronic current transformer B, power module, humidity sensor, electromagnetic switch, RFID electronic tag, GPRS module, front-end circuit, charging terminal circuit, background management server, APP client; the present invention can not only monitor the charging status of the charging pile in real time, Moreover, it has the function of remote communication and independent power failure alarm, which ensures the safe charging of charging piles, and at the same time supervises and guarantees the inspection work of inspection personnel.

The present invention employs more than two secondary batteries; most output of one battery is supplied to load, and rest output is used to charge another battery for improving the battery efficiency and prolong the battery usable time (discharge time). The object of the present invention is to provide a power supplying device and battery mode switching method by using the secondary battery cells. According to the present invention of using more than two secondary batteries that; if either one of the secondary battery sets for discharging mode, the device including that; an inverter for delivering a DC output voltage of the secondary battery, which is in discharging mode, when one of the more than two secondary batteries is discharged; a relay performing the switching operation for connecting to other different secondary battery of more than two secondary batteries to the inverter, at other point, the secondary battery in discharge mode of more than two secondary battery is connected to the inverter; and a controlling unit for alternately supping the power of the more than two or secondary batteries to the load by controlling the switching operation of the relay via the inverter, a switching unit alters charging or discharging mode, the anode (+) and cathode (−) of each DC terminal, which is mutually and fixedly connected, and each moveable terminal of the secondary battery is switched to control the battery mode.

The invention relates to an electric vehicle mobile power supply. The electric vehicle mobile power supply comprises a charging assembly, a storage battery assembly, a main control assembly and an output assembly, wherein the charging assembly is used for converting an external power supply voltage and charging the storage battery assembly; the storage battery assembly is used for storing the electric energy of the external power supply voltage, and charging the electric vehicle; the main control assembly is used for regulating and monitoring charging-discharging parameters of the storage battery assembly; and the output assembly is used for outputting the electric energy of the storage battery assembly to the electric vehicle, and charging the electric vehicle. By adoption of the electric vehicle mobile power supply, the electric vehicle can be charged at any time anywhere, so that the shortcoming that a fixed charging pile cannot move in a charging process is overcome; particularly, the electric vehicle mobile power supply can temporarily charge the electric vehicle which is in low battery to increase endurance mileage of the electric vehicle; and meanwhile, the electric vehicle mobile power supply is safe, reliable, stable, convenient, compact in structure, efficient in operation, and has relatively high promoting significance to the popularization of the electric vehicle.

The invention discloses an electric automobile group charging device and a system. The group charging device comprises an integrated charging box, and is characterized in that the integrated charging box outputs a plurality of charging cables, the charging cables are connected to charging plugging connection apparatuses, and the charging plugging connection apparatuses are arranged at parking spaces respectively. The integrated charging box is utilized to carry out centralized and unified management on charging conditions of the charging plugging connection apparatuses connected with the integrated charging box, thereby not only saving the occupied area, but also being convenient for centralized management and load allocation, being capable of carrying out centralized control on each charging branch circuit, and being completely controllable for each charging branch circuit. During charging, a terminal sends charging plugging connection apparatus information and charging parameters to a cloud server, the cloud server is communicated with a control system, the cloud server or the control system calculates a charging strategy, a switching device is controlled according to the charging strategy, and centralized intelligent charging is realized.

The invention discloses a relay detection and control device for an AC charging pile. The relay detection and control device comprises a relay detection module, a detection control switch, an optocoupler isolation output module and a main control chip, wherein the relay detection module is respectively connected with the optocoupler isolation output module and at least one detected relay, the maincontrol chip is respectively connected with the optocoupler isolation output module and the detection control switch, the detection control switch is used for controlling the relay detection module to be powered on or powered off, and the relay detection module is used for controlling the optocoupler isolation output module to output a detection signal; and the main control chip acquires the on-off state signal of the detected relay in real time, judges whether the on-off state signal and the detection signal accord with a preset relay state matching relationship or not when entering a contact adhesion detection mode, and sends a cut-off instruction to the air switch if the on-off state signal and the detection signal do not meet the preset relay state matching relationship. The relay action can be detected and disconnection of the relay can be effectively controlled so that safety and reliability of the charging pile can be enhanced and user safety and vehicle charging safety can beguaranteed.

A fuel nozzle guard, in some embodiments, comprises a static control material. When a consumer grabs the fuel nozzle, his or her hand will touch the static control material, thereby, safely dissipating any electrostatic charges at a controlled rate of discharge without a spark. The fuel nozzle guard, in some embodiments, slides onto the nozzle interfacing with the nozzle so that retaining edges secure the fuel nozzle guard to the nozzle, without removing the nozzle from its hose. The material, in some embodiments, lacks plastisol and allows labels to adhere directly to it.

The invention relates to automotive electric balance technology, in particular to real-time control method and device for automotive electric balance. The method includes the steps of firstly, acquiring real-time electric quantity of a storage battery; secondly, judging whether the storage battery needs to be charged or not according to the real-time electric quantity of the storage battery; thirdly, if yes, acquiring real-time load of an engine; fourthly, judging whether the engine is able to drive a generator to operate or not according to the real-time load of the engine; if yes, determining that the generator needs to operate and going to next step; fifthly, allowing the generator to operate; sixthly, acquiring real-time power of the generator and real-time electric consumption of an automobile; seventhly, judging decreasing or increasing the power of the generator is needed or not according to the real-time power of the generator and the real-time electric consumption of the automobile, and executing. Start and stop of the generator and operating efficiency thereof are controlled through the controller, so that real-time electric balance of the automobile is maintained.

The invention provides a multiplexer and fast charging control method, a control device and a mobile terminal. Among them, the multiplexer and fast charging control method includes detecting the power of a battery and the temperature of a charging chip of any way among multiple ways of charging circuits when switching on power supply for charging, and controlling the states of the switching on and the outage of a relevant charging switch of a charging chip of any way according to the battery power and the temperature of the charging chip of any way detected. According to the technical scheme, the states of the switching on and the outage of the charging switch of any way can be controlled, and then the multiplexer and fast charging control method can prevent the temperature of charging chip becoming too high, increasing the charging speed as faster as possible and improving the user experience on the premise of ensuring a safe temperature.

The embodiments of the invention disclose a battery charging method which comprises: detecting and obtaining the battery temperature of a charging battery; and when the battery temperature is above a preset temperature threshold, adjusting the currently charging current to the preset charging current for power charging wherein the preset charging current is smaller than the currently charging current. The embodiments of the invention also disclose a battery charging apparatus.

The invention relates to a motor train unit charger battery charging control method. The method comprises the steps that: a battery type is identified, specifically, the battery type is identified according to a fault state of a temperature sensor arranged in a battery and the communication state of a charger and a BMS system of the battery; if the identified battery type is a storage battery, a storage battery charging control strategy is executed to perform charging management on the storage battery; if the identified battery type is a lithium battery, the charger is in normal communicationwith the BMS system, and the BMS system detects that the lithium battery does not have a fault, a preset lithium battery charging control strategy is executed to perform charging management on the lithium battery; and if the battery type cannot be identified, the charger performs charging according to a preset minimum charging voltage reference value and a preset charging current reference value.According to the method, the battery type can be automatically identified, the corresponding charging control methods are specifically provided according to the identified different battery types, universality, integration and reliability are achieved, and the power supply requirement of a motor train unit is met to the maximum extent.

The invention relates to an intelligent charging pile and method. The intelligent charging pile comprises a charging pile body, a charging pile control device and a charging gun. The charging pile body accesses user information in a radio frequency card, and the user information is transmitted to the charging pile control device; a voice signal is further generated for voice playback; touch control information is further input and transmitted to the charging pile control device; charging information and all-in cost information are further displayed and printed; the charging pile control devicecontrols a relay circuit for turning on; information is sampled and judged, and the relay circuit is controlled to be turned on or turned off; the touch control information is further processed, thecharging information and the all-in cost information are generated, and the turn-on time of the relay circuit is set; and electric energy is further measured in real time, and an electric energy measuring signal and a real-time cost signal are generated and transmitted to an intelligent terminal for displaying. According to the intelligent charging pile and method, charging intellectualization canbe improved, a user can conveniently know the charging information and the charging cost, a car battery is effectively maintained, safety performance of charging is improved, and the car battery is protected.