343results about How to "Improve charging safety" patented technology

The invention relates to the technical field of battery charging, in particular to a charging method of a lithium ion battery based on time and temperature. Polarization voltage limited maximum charging current is calculated based on lithium ion battery polarization characteristics, and under the constraint of the maximum charging current, charging temperature rise and charging time are considered comprehensively, genetic algorithm is employed to search the optimal charging current so as to balance the mutual contradictory objects of reducing charging time and lowering charging temperature rise. The result shows that the optimal charging current ensures charging rapidity, at the same time controls the polarization voltage and temperature rise of the charging process within an allowable range, and guarantees the charging capacity, charging efficiency and charging safety and battery life.

The invention relates to the technical field of electric vehicles, in particular to an intelligent charging method and system for an electric vehicle. The intelligent charging method comprises the steps of enabling a charging pile to search for a communication signal of the electric vehicle, enabling the charging pile to receive vehicle identification information sent by the electric vehicle to perform primary authentication if the communication signal satisfies a communication condition, enabling the charging pile to control a parking space blocker to descend if the vehicle identification information received by the charging pile is in accordance with authorized vehicle identification information, enabling the charging pile to receive a charging gun insertion signal sent by the electric vehicle after the charging gun is inserted so as to perform secondary authentication, and enabling the charging pile to start a charging mode to charge the electric vehicle if the vehicle identification information of the electric vehicle included in the charging gun insertion signal is in accordance with the authorized vehicle identification information. The intelligent charging method and systemfor the electric vehicle greatly improve the user experience of charging, and reduce the operation and maintenance time and cost of an enterprise and a user to a certain extent. The charging safety ishigher.

The invention discloses a charging control method and apparatus of a battery for an electric vehicle. The charging control apparatus comprises a charging controller, a charging instruction input module, a charging mode confirmation module, a cost calculation and payment module, a charging connection module, a charging information acquisition module, a charging process abnormity monitoring module, a charging amount monitoring module. a charging residue monitoring module, remote monitoring terminal equipment, a power-off module, a charging completion warning module and a cloud storage. According to control of the charging control method and apparatus disclosed by the invention, by effectively monitoring charging information in real time, charging safety and stability of the battery for the vehicle are improved; the charging abnormity monitoring module can well carry out real-time monitoring on a charging abnormity; and the remote monitoring terminal equipment is arranged and remote monitoring is carried out in a wireless network mode, so that remote monitoring on the whole charging process of the battery is further improved.

The invention discloses a novel energy charging pile device. The novel energy charging pile device comprises a charging pile body, a charging end and a charging terminal, wherein the charging end is arranged on the right side end face of the charging pile body; the charging terminal is connected with a novel energy automobile; a base is fixedly arranged at the bottom of the charging pile body; a counterweight block is arranged on the bottom in the base; a rain-proof cover is fixedly arranged on the top of the charging pile body; insertion holes which have ports facing rightwards and are formedcorresponding in vertical direction are formed in the charging end; a slide cavity capable of extending leftwards and rightwards is formed between the two insertion holes in the charging end; a leftslide block and a right slide block capable of sliding leftwards and rightwards are arranged in the slide cavity; power transmission plugs which are connected with the commercial power are arranged onthe right end face of the left slide block in vertical direction; electric connectors which are matched with the power transmission plugs are arranged on the left end face of the right slide block vertically.

The invention discloses a battery charging method, apparatus and equipment and a storage medium. The charging method comprises the steps of setting a charging current value I<n> in the n charging stage in the battery charging process; in the (n-1) charging stage, determining a battery internal resistance value according to a battery temperature and state of charge at an appointed moment charged at I<n-1>; determining a battery charging loss coefficient according to the battery temperature at the appointed moment; correcting a charging cut-off voltage value V<n-1> corresponding to the I<n-1> according to the battery internal resistance value and the battery charging loss coefficient at the appointed moment; in the (n-1) charging stage, if the battery charging voltage is greater than or equal to V<n-1> and n-1 is less than the set charging stage total number, entering the n charging stage; and if the battery charging voltage is greater than or equal to V<n-1> and n-1 is equal to the charging stage total number, stopping charging. By virtue of the battery charging method provided by the embodiments, the charging efficiency can be improved, and risks of over-charging or over-discharging can be avoided.

The invention relates to a method for automatically charging by utilizing a vehicle identification number (VIN). The method comprises the following steps: detecting a connection state between a charging gun of a charging machine and a charging interface of a to-be-charged vehicle; providing a low-voltage auxiliary power supply for a BMS (battery management system) by the charging machine when the connection state is normal; transmitting a handshake identification message to the BMS by the charging machine and retransmitting a reply identification message to the charging machine by the BMS according to a communication protocol between the charging machine and the BMS, wherein the reply identification message is written into the VIN corresponding to the vehicle in advance; analyzing the VIN when the reply identification message is received by the charging machine in a preset period of time, and controlling to cut off the low-voltage auxiliary power supply; and contrasting the analyzed VIN with a pre-recorded VIN database, and controlling the charging machine to charge or not charge a battery of the vehicle. The method disclosed by the invention is used for solving the problems in the prior art such as complicated charging process, low portability, low reliability and low safety, automatic charging is realized, the charging convenience, reliability and safety are enhanced, and the user charging experience is improved.

The invention belongs to the technical field of charging of a lithium ion battery, and particularly relates to an optimized charging method of a vehicle-mounted energy storage lithium ion battery for rail transit. The optimized charging method comprises the steps of calculating maximum charging current and a charging cutoff voltage of a lithium ion battery within a full-life period according to cycle lifetime attenuation characteristic of the lithium ion battery; constructing an optimized charging target function under the constraint of the maximum charging current and the charging cutoff voltage by taking charging time reduction and battery charging temperature rising control as targets; and seeking an optimal charging current by a genetic algorithm so as to balance the two conflict targets of charging time reduction and the charging temperature rising reduction. A result shows that the optimal charging current is used for ensuring charging rapidness and simultaneously controlling a polarization voltage and the temperature rising during the charging process to be within allowable ranges, and the charging capacity, the charging efficiency, the charging safety and the battery lifetime are ensured.

The invention discloses a wireless charging remote control system and a remote control method thereof. The system comprises a wireless charger and a monitoring device, wherein the wireless charger is in communication link with the monitoring device, the wireless charger can be connected with a network to send charging state parameters of a terminal to be charged and charging state parameters of the wireless charger to the monitoring device to be displayed, the monitoring device starts a charging monitoring mode, receives the charging state parameters and judges whether the charging state parameters are larger than preset parameters, and corresponding control orders can be output according to judgment results to remotely control a work state of the wireless charger. Thus, a user can monitor a charging process in real time, and charging abnormal phenomena can be remotely controlled at any place and any time. A charging control method of the wireless charger is optimized, charging safety is improved, and product competitiveness on the market is guaranteed.

The invention discloses a wireless charging circuit, system and method and electronic equipment. The wireless charging circuit can comprise an electric energy receiving module, a rectifying module, acontrol module and a charge pump charging module. The electric energy receiving module is used for receiving the alternating current transmitted by the electric energy transmitting module of a wireless adapter. The rectifying module is used for converting the alternating current into direct current. The control module is used for generating a first control signal in the constant current stage. Thecharge pump charging module is used for performing voltage reduction and current enhancement on the direct current when receiving the first control signal and transmitting the direct current after voltage reduction and current enhancement to a battery to be charged. Compared with the circuits in the prior art, the wireless charging circuit has no step-down conversion module; the charge pump charging module having no inductance component is used in the constant current stage; and the current of the pre-circuit of the charge pump charging module is low and the coupling loss is low in the constant current stage so that the problems of low charging efficiency and low safety in the prior art can be solved.

The invention discloses a DC charging connector and a connection method thereof. The DC charging connector comprises a shell, a mechanical lock, a safety switch, an electronic lock, a locking feedback switch, a charging interface, an interface inner frame and current terminals, wherein the current terminals are arranged on the interface inner frame. The DC charging connector is ingenious in structural design; the mechanical lock, the safety switch, the electronic lock and the locking feedback switch are reasonably arranged to form multi-protection; energization in the plugging process is avoided, so that sparks are avoided; the potential safety hazard is completely eradicated; the DC charging connector does not easily fall off after being coupled; and the charging stability is good. After the electronic lock works to be locked, a locking confirmation signal is fed back to a charging pile through the locking feedback switch, and then charging is carried out, so that the phenomena of abnormal charging interrupt and the like since the DC charging connector is accidentally unplugged due to a misoperation are avoided; and the charging safety and the personnel safety are greatly improved. Furthermore, the interface temperature in the charging process can be constantly monitored through a temperature sensor and can be fed back to the charging pile, so that the charging safety of the DC charging connector and a vehicle is greatly improved.

The invention discloses a wireless charging circuit, method and system and electronic equipment. The wireless charging circuit comprises an electric energy receiving module, a rectifying module and acharge pump charging module. The electric energy receiving module is used for receiving the alternating current transmitted by the electric energy transmitting module of a wireless adapter and transmitting the alternating current to the rectifying module. The rectifying module is used for converting the alternating current into direct current and transmitting the direct current to the charge pumpcharging module. The charge pump charging module is used for performing voltage reduction and current enhancement on the direct current and transmitting the direct current after voltage reduction andcurrent enhancement to a battery to be charged. Compared with the circuits in the prior art, the charge pump charging module is used as the charging module of the wireless charging circuit, and the internal charge and discharge element is the capacitor rather than the inductor; besides, the current of the pre-circuit is enabled to be low and the coupling loss is enabled to be low by the charge pump charging module so that the problems of low charging efficiency and low charging safety can be solved.

The invention provides a charging method, comprising the steps of detecting state information of an electronic device; sending the state information to a charger based on a communication connection channel between the charger and the electronic device to enable the charger to regulate output charging current based on the state information; and charging a battery based on the charging current output by the charger. When the charger provides power for the electronic device, the electronic device sends the state information generated in the charging process to the charger, so that the charger can regulate power of power supply electronic device based on the state information so as to regulate the power for the electronic device in real time according to the related state information in the charging process of the electronic device; the control ability of a charging IC (integrated circuit) in the charging process is scattered; the charging IC can independently judge and regulate the charging process without needing the electronic device; and even if the charging IC is in failure, the charger can regulate the charging power in the charging process for the electronic device based on the state information, so that the charging safety is improved.

The invention proposes an electric vehicle charging pile and an electric vehicle charging method. The electric vehicle charging pile includes: an electric vehicle charging port; a mutual inductor connected to the electric vehicle charging port and used for detecting charging current of the electric vehicle charging port and sending the charging current to a central control system module of the electric vehicle charging pile; and the central control system module connected to the electric vehicle charging port and used for receiving the charging current from the mutual inductor and controlling the electric vehicle charging port to stop charging when the charging current is smaller than or equal to a predetermined current threshold value. Through the technical scheme of the electric vehicle charging pile provided by the invention, charging can be automatically stopped when completed, and a battery is prevented from being damaged due to too long charging, thereby prolonging the service life of the battery, and improving charging safety of the electric vehicle.

The application discloses a charging abnormality detection method, a charging data line and a charging system. The charging abnormality detection method includes: when an electronic device is charged,a charging curve of a charging USB interface is obtained, wherein the charging curve includes a curve of correspondence between a current flowing through the charging USB interface and charging time;the charging curve of the charging USB interface is compared with a preset normal charging curve; and according to the comparison result, whether the charging process is abnormal is detected. According to the embodiment of the application, current monitoring is carried out on the charging USB interface and whether abnormality occurs during the charging process is monitored, so that charging safety is improved.

The invention discloses a wireless charging circuit, system and method and electronic equipment. The wireless charging circuit comprises an electric energy receiving module, a rectifying module, a control module, a step-down conversion module and a charge pump charging module. The electric energy receiving module is used for receiving the alternating current transmitted by the electric energy transmitting module of a wireless adapter. The rectifying module is used for converting the alternating current into direct current. The control module is used for generating a first control signal in theconstant current stage. The step-down conversion module is used for adjusting the direct current according to the first control signal. The charge pump charging module is used for reducing the voltage of the adjusted direct current to the charging voltage and enhancing the current of the adjusted direct current to the charging current. Compared with the circuits in the prior art, the charge pumpcharging module having no inductance component is used as the charging module in the constant current stage so that the charging efficiency can be enhanced; besides, the current of the pre-circuit ofthe charge pump charging module is low and the coupling loss is low so that the charging efficiency can be further enhanced.

A lead acid battery for an electric vehicle has to face more use requirements of big capacity, long cycle life, big discharge current, short charging time and the like because the lead acid battery powers the vehicle, particularly a higher requirement on the charging technology. For the conventional three-stage charging technology, on the one hand, if the set breakover voltage from the first stage to the second stage is lower, the battery is insufficiently charged, which causes the quick reduction of the capacity of the battery, and if the set breakover voltage is higher, the loss of electrolyte and heating of the battery are caused due to positive overcharge; on the other hand, because different batteries are different in additive formulas, the ideal breakover voltage and breakover current are different; and the lead acid battery is passively charged by a charger, if the charger and the battery require different rated voltage or anode-cathode directions, the damage of the battery or charger can be caused. Because a charging inference function module lowers the charging potential of the battery by continuously using negative pulse to discharge at the later stage of charging, the polarization potential difference between the charger and the battery is ensured, and the battery can be charged more fully; pole plate active materials of the battery are electrochemically reacted at a low potential, so that the gassing amount generated is greatly reduced; simultaneously, due to enough charging break time, the oxygen separated from the anode is ensured to undergo reaction with hydrogen to obtain water when reaching the cathode, and the enough time for heat dissipation is also ensured; and the service life of the lead acid battery is prolonged.

The invention discloses a charging method, device and equipment for a battery. The charging method comprises the following steps: setting the charging current value In of the nth charging stage in the battery charging process; in the (n-1)th charging stage, charging the battery by using current In-1, and based on In-1 and the state of charge SOC of the battery at an appointed moment, determining the charging cut-off voltage value Vn-1 corresponding to In-1 at the appointed moment; when the charging voltage of the battery at present is smaller than the charging cut-off voltage value corresponding to In-1 at the appointed moment, continuously charging the battery by using current In-1; in the (n-1)th charging stage, when the charging voltage of the battery at present reaches the charging cut-off voltage value corresponding to In-1 at the appointed moment and n-1 is smaller than a set charging stage sum, entering the nth charging stage, and when the charging voltage of the battery at present reaches the charging cut-off voltage value corresponding to In-1 at the appointed moment and n-1 is equal to the charging stage sum, stopping charging. According to the charging method for the battery provided by the embodiment of the invention, the charging quantity and charging efficiency can be improved.

The invention discloses a charging method for a lithium ion battery management system. The method comprises a five-stage current continuous charging step. The state of charge of a battery is judged before charging, and then, different charging steps are selected according to the state of charge of the battery. When the state of charge of the battery changes, the charging steps of the battery are adjusted in time for charging until the battery is fully charged. The state of charge of the battery can be judged by measuring the voltage of the battery and comparing the measured voltage with presetvoltages in different charging states. According to the charging method for a lithium ion battery management system, a five-stage current continuous charging scheme is adopted, so that anode lithiumprecipitation of lithium ion batteries at low temperature is improved, the safety of batteries during lithium ion charging is enhanced, and the quantity of electricity charged into lithium ion batteries is increased.

The invention discloses an electric bicycle wireless charging system, and relates to the technical field of electric bicycle wireless charging. The electric bicycle wireless charging system comprisesa cloud server, charging carports and charging piles. The charging carports are centrally managed through the cloud server by an internet mode, and the charging carports each comprise a plurality of charging piles and a centralized manager. The centralized managers receive charging process data of each charging pile wirelessly in real time, and the charging piles are fixedly disposed on the groundin the charging carports. Electric bicycle charging coils are induction secondary coils connected with electric bicycle batteries, and no wire connection between charging devices and the electric bicycle batteries is needed. Electric leakage and spark touch caused by the aging of wires and plugging and unplugging of sockets in a traditional charging mode are avoided, potential safety hazards suchas electric shock and fire are avoided, the charging safety is improved, when charging, electric bicycles only need to be parked within a certain range of power receiving for charging, and the use isconvenient.

The invention discloses a novel safety management method and a novel safety management device for a power battery pack of an electric vehicle. A data acquisition system and a charging/discharging management system are used for sequentially detecting, analyzing and calculating four parameters of single air pressure, single temperature, single voltage and power battery pack charging/discharging current of the power battery pack to further control the charging/discharging state of the power battery pack, wherein the single air pressure, the single temperature, the single voltage and the power battery pack charging/discharging current of the power battery pack are detected through a normally closed air pressure switching sensor, a temperature sensor, a voltage sensor and a Hall sensor respectively. According to the method and the device, the charging/discharging of the power battery pack is instantly stopped when one of the four parameters reaches a charging/discharging stopping condition in a process of detecting the four parameters, and the four parameters are continuously detected if all is normal, so that all single power batteries are effectively prevented from being over-charged or over-discharged, the service life of the power battery pack is prolonged, and the safety of the power battery pack is improved.