36results about "Circuit monitoring/indication" patented technology

A rechargeable battery pack for a handheld power tool, encompasses a housing and at least one interface unit for establishing a mechanical and electrical connection between the rechargeable battery pack and the handheld power tool and/or a charging device. The interface unit has at least one locking element for locking the rechargeable battery pack onto the handheld power tool, and an actuation element for actuating the locking element. The actuation element encompasses at least one light-emitting element for outputting an optical signal and/or for illumination.

A desk storage device includes a housing including an accommodation chamber, a front cover panel for controlling access to the accommodation chamber and a plurality of partition boards adjustably mounted in the accommodation chambers at selected elevations and defining an insertion slot between each two adjacent partition boards for storing one respective mobile electronic device, and a power module mounted in a bottom side in the accommodation chamber and including a control system and a system circuit board that includes electrical connectors for charging storage mobile electronic devices subject to the control of the control system and indicator lights controllable by the control system to indicate the charging status of each storage mobile electronic device.

The invention aims to provide a vehicle-mounted solar charging pile which is a combination of novel solar photovoltaic power generation and a charging pile, and solves the problems that an existing electric vehicle charging pile can only utilize alternating current and direct current power grids at fixed places to carry out charging and fails to fundamentally solve the problems of energy regeneration and environment pollution; in addition, the vehicle-mounted solar charging pile can provide emergency energy to an electric vehicle or other electric vehicles in a no-service-area region. According to the invention, the electric power of a solar cell is supplied to a storage battery by means of an intelligent controller, a direct current is utilized or the direct current is inverted into an alternating current to cooperate with the charging pile so as to charge the electric vehicle. A system cooperatively control maximum power tracking of the solar cell and intelligent charging of the storage battery, so that the photovoltaic charging pile is enabled to stably charge the electric vehicle, and the optimal utilization of solar energy is also realized.

A charging device includes charging power detection unit and full charge determination unit. The charging device further includes charging control unit adapted to repeatedly execute a additional charging control until the number of times of the full charge determination reaches a predetermined full charge determination count. The charging device further includes unit adapted to detect the temperature of the secondary battery, and full charge determination count setting unit adapted to set a larger full charge determination count as the temperature decreases at least based on the temperature of the secondary battery when the full charge determination is made.

A method for estimating lifespan of a battery in accordance with the present invention, comprising steps of: fully discharging the battery; partially charging the fully discharged battery under a predetermined charging condition; acquiring pieces of voltage information at multiple specific points of measurement time while partially charging the battery; and calculating remaining capacity of the battery by using the acquired pieces of voltage information. An apparatus for estimating lifespan of a battery in accordance with the present invention, comprising: a reference data-storing unit for storing reference data that become a basis of estimating the lifespan of the battery; a charge/discharge-controlling unit for fully discharging the battery to estimate the lifespan of and partially charging the battery under a predetermined charging condition; a voltage information-acquiring unit for acquiring pieces of voltage information of the battery at multiple specific points of measurement time while partially discharging the battery; and a remaining capacity-calculating unit for calculating remaining capacity of the battery by using the acquired voltage information and the reference data.

A power supply unit for an aerosol suction device includes: a power supply capable of discharging to a load for generating an aerosol from an aerosol generation source; and a controller capable of controlling charging and discharging of the power supply. The controller is capable of operating in a charging mode for controlling charging of the power supply, a first mode different from the charging mode, and a second mode different from the charging mode and the first mode, and is capable of executing diagnosis processes of the power supply in each of the first mode and the second mode.

A main terminal including a connection unit connectable to a subordinate terminal, a charging unit to charge a first battery of the main terminal and to charge a second battery of the subordinate terminal, and a control unit to maintain a first charging current to the main terminal regardless of whether a second charging current is provided to the subordinate terminal. A method for controlling a charging current for a subordinate terminal connected to a main terminal including recognizing a voltage of a battery of the subordinate terminal, determining a charging current for the battery of the subordinate terminal, and providing the charging current to the battery if the voltage of the battery is less than or equal to a target voltage.

The invention discloses a charging and discharging current control method for a parallel battery energy storage system. The method comprises the following steps: carrying out serial number calibration on a plurality of battery stack energy storage systems which are operated in parallel in the energy storage system, and respectively receiving system parameter information flow of each battery stack energy storage system; calculating a total reference value of charging and discharging currents of the cell stack energy storage system required for maintaining power balance of the power grid bus system, and calculating an average reference value of the charging and discharging currents; calculating the battery stack charge state and terminal voltage of each battery stack energy storage system, calculating the average value of the battery stack charge state of the battery stack energy storage system, calculating the average value of the battery stack terminal voltage of the battery stack energy storage system, and calculating the charge and discharge current deviation of each battery stack according to the average value and the average value; calculating an actual charging and discharging current reference value of each cell stack energy storage system; and carrying out charge and discharge current control on each cell stack energy storage system through a master control unit. The method has the advantages of prolonging the service life of the cell stack and ensuring good performance of the cell stack.

A battery management system having capability for addressing and time-division communication, the battery management system comprises a controller and a plurality of sensors, the sensors can communicatively connect to the controller; wherein each sensor has a communication port, the controller can transmit a plurality of addressing commands to address each of the sensors, each of the sensors can control the communication period of each communication port in accordance with its received addressing command, therefore the sensors and the controller can execute the time-division communication.

A USB Type C sensor is disclosed for use with an alarm system for monitoring a chargeable electrical device having a USB Type C port. A sensor comprises a first cable having a USB Type C plug receivable in the USB Type C port. A second cable has a second USB plug receivable in a power source. A third cable has an alarm plug receivable in an alarm receptacle for the alarm system, in use. A housing is operatively connected to the first, second and third cables. A sensor circuit is in the housing and electrically connects the second USB plug to the USB Type C plug to charge a chargeable electrical device to be monitored. A switch circuit monitors a configuration channel of the USB Type C port to determine if the first cable is connected to the chargeable electrical device and responsive thereto controls a switch electrically connected to the alarm plug so that the alarm system monitors status of the switch.

A hybrid energy storage-containing photovoltaic DC micro-grid coordinated control method comprises the following steps of: establishing a control strategy of a photovoltaic power generation system, and enabling the photovoltaic power generation system to operate in an MPPT mode and a CVC mode; dividing the operation mode of a DC micro-grid into a plurality of working modes; establishing a low-pass filter model to distribute power borne by a hybrid energy storage system; calculating the working currents of a super-capacitor and a storage battery according to the power and terminal voltage borne by the super-capacitor and the storage battery respectively; designing the control mode of a bidirectional DC/DC converter by comparing the charging and discharging current reference value of an energy storage device with the actual working current; and when the photovoltaic power generation system and the energy storage device in the DC micro-grid are not enough to stabilize power fluctuation in the system, or the energy storage device fails and cannot participate in adjustment, integrating the DC micro-grid into a large power grid through the bidirectional DC/DC converter. According to the method, complex parameter setting and mass calculation can be avoided, the service life of the energy storage device is considered while control is flexible, and the operation economical efficiency is improved.

The invention provides a charging and discharging battery replacing method and device for an electric vehicle, and the method comprises the specific steps: an AC/DC controller monitors the change of charging demands in real time, and provides a time sequence according to the charging demands of a battery box and a charging pile of the electric vehicle; when the charging pile and the battery box need to be charged at the same time, the AC/DC controller compares the capacity sum S of the charging requirements of the charging pile and the battery box with the charging capacity S0 of the AC/DC charging and discharging unit, and corresponding operation is completed; when the charging pile and the battery box do not need to be charged at the same time, the AC/DC controller compares the capacity sum S of the charging requirements of the charging pile and the battery box with the charging capacity S0 of the AC/DC charging and discharging unit, and corresponding operation is completed; and according to the voltage and current of the battery fed back by the charging pile battery management system and the electric vehicle battery box management system in real time, the output voltage and current of the charging pile are adjusted, and charging is completed. Charging and battery swapping can be provided for the electric vehicle, electric energy is provided for the power grid according to power grid dispatching, and the utilization rate and economic benefits of the charging and battery swapping station are effectively improved.

The invention provides a photovoltaic energy management system and method, and relates to the technical field of photovoltaic energy. According to the system, current and voltage values of a photovoltaic panel, a storage battery and an external load are collected through a sampling circuit, a plurality of first maximum power points of the photovoltaic panel are calculated through a microcontroller according to a plurality of mppt strategy algorithms, and the plurality of first maximum power points are compared; and a charging PWM value and a direct supply PWM value output by the microcontroller are determined and adjusted according to the second maximum power point parameter, so that the energy utilization efficiency is improved, and the photovoltaic energy is effectively distributed. And the microcontroller determines a voltage output mode of the storage battery and the photovoltaic panel to the external load according to the voltage value of the storage battery, and finds an optimal output point among battery charging, battery discharging and direct output, so that the utilization rate of the battery is reduced to the greatest extent, and the service life of the storage battery is prolonged.

The invention relates to the field of wearable intelligent equipment, in particular to a wireless power supply intelligent helmet with a lens two-degree-of-freedom adjusting mechanism. The helmet comprises an optical waveguide lens two-degree-of-freedom adjusting mechanism, an autonomous wireless power supply module, a helmet body, a main control board assembly, a camera assembly and a pair of goggles, the autonomous wireless power supply module comprises a receiving end module and a power supply end module, the receiving end module and the main control board assembly are installed inside thehelmet body, the goggle is fixed below the front edge of the helmet body, the optical waveguide lens two-degree-of-freedom adjusting mechanism is fixed below the front edge of the helmet body behind the goggle, and the camera assembly is installed above the optical waveguide lens two-degree-of-freedom adjusting mechanism. The helmet is compatible to be worn by people with different head sizes, andthe whole image can be seen after adjustment. People with different interpupillary distances are compatible to wear, and the whole image can be seen after adjustment.

The remote fire composite detector comprises a shell, a battery module, a sensor module and a circuit board, the sensor module comprises a CO sensor, a particulate matter sensor and a TVOC gas sensor, the shell is divided into an upper layer, a middle layer and a lower layer, the battery module is arranged on the upper layer of the shell, and the circuit board is arranged on the lower layer of the shell. The middle layer of the shell is provided with an LED module and a circuit board, and the lower layer of the shell is provided with a CO sensor, a particulate matter sensor, a TVOC gas sensor and a buzzer module. The system can remotely monitor and obtain an environment abnormity alarm sent by the cloud server in real time, carries out monitoring through three parameters of a PM value, a TVOC concentration and a CO concentration, can rapidly detect a signal under the conditions that more CO is generated by smoldering in the initial stage of a fire disaster, and the smoke production amount is small during combustion of part of materials, improves the possibility of fire disaster suppression and extinguishment, and improves the safety of the fire disaster. And the detector is internally provided with a high-capacity rechargeable battery, so that long-time endurance and environmental protection are realized.

The invention relates to an anti-skid vehicle-mounted charging device with a power source light bar. The device comprises a charging device body, a power source output port, a power source light bar,a positive electrode, negative electrodes and anti-skid strips; the power source output port is installed at one end of the charging device body; the power source lamp is installed at one end of the charging device body; the positive electrode is installed at one end of the charging device body; the negative electrodes are installed at one end of the charging device body; and the anti-skid stripsare arranged on the surface of the charging device body; and the anti-skid strips and the charging device body are integrally shaped. The product of the invention does not skid out of the hand of a user and can be quickly pulled out. The cost of the product is not increased.

The invention discloses a mobile electrochemical energy storage group station non-power-off system and a control method. The system comprises an energy storage power supply vehicle group and a diesel generator car, the control method adopts energy storage system grouping periodical seamless switching charging and discharging, adopts a non-charging energy storage group peak regulation optimization charging process, and randomly optimizes an energy scheduling strategy according to different states of a diesel generator set. The method has the advantages that a maneuvering group station uninterruptible power supply system is provided for an area far away from an energy pipe network; sound smoke control can intervene in sudden stop of the charging unit at any time, and unit station power supply is uninterrupted; the operation time of the diesel generator set is minimized through optimization control; the energy storage module vehicles can be alternately used after leaving the station; all the power supply vehicles take electricity universally in a fully distributed manner; modularized rapid station assembling is flexible and flexible. All electrified energy is output, an energy pipe network can be simplified, and maneuverability is improved; after the control method is changed, the method can be used in common scenes with a power grid, a diesel generator set mainly used and a diesel generator car independently used, and asset efficiency is improved.

The invention discloses a battery charging core device. The device comprises a high frequency switching circuit, a temperature sensor control circuit, a battery detecting circuit, an intelligent heatdissipating circuit, an abnormality alarm circuit, a communication circuit and a micro processing circuit, and the temperature sensor control circuit is connected with the micro processing circuit through a connecting circuit, the high frequency switching circuit is connected to the micro processing circuit through the connecting circuit, the micro processing circuit is connected to the intelligent heat dissipating circuit through the connecting circuit, the battery detecting circuit is connected to the micro processing circuit through the connecting circuit, and the micro processing circuit is connected with the abnormality alarm circuit and the communication circuit through the connecting circuit. The device has novel structure and simple operation. By arranging the abnormal alarm circuit and the communication circuit, a general control room can understand the working condition of each brunch point through a PC computer end, control the work of each brunch point, and satisfy the trend of intelligent development of electronic control; the intelligent heat dissipating circuit is added, which not only saves energy, but also prolongs the reliable working time of a smart charging device.

A power storage system control device includes: a distribution condition output unit configured to, when a power storage system including a first power storage device and a second power storage device having a characteristic different from that of the first power storage device output power to the power system, output a distribution condition for distributing a total output command value, which is a command value obtained by summing up the power to be output by the first and second power storage devices, to the first power storage device and the second power storage device; and a command value output unit configured to output, based on the distribution condition, a first command value for commanding the power output from the first power storage device and a second command value for commanding the power output from the second power storage device to suppress overcharging and over-discharging of the power storage devices.

The invention discloses a charging circuit for an electric vehicle. The charging circuit comprises a power input end, a rectifying and filtering circuit, a switching tube, a high-frequency rectifying and filtering circuit and a power output end, all of which are sequentially and electrically connected. The charging circuit further comprises a protection circuit and a charging control circuit. The output end of the high-frequency rectifying and filtering circuit is connected with the input end of the protection circuit, the output end of the protection circuit is connected with the power output end, the output end of the high-frequency rectifying and filtering circuit is in signal connection with the charging control circuit, and the charging control circuit is in signal connection with the switching tube and the protection circuit. By means of the technical scheme, the charging control circuit and a charging display unit are additionally arranged in the charging circuit, therefore, the charging state of a charger can be visually shown, and use is convenient; in addition, the protection circuit is additionally arranged in the circuit, the circuit can be disconnected in time after a storage battery is charged, the situation that the storage battery is in an overcharge state frequently is avoided, and the service life of the storage battery is greatly shortened.

The invention discloses a charging device of a smart wristband. The charging device comprises an upper shell and a lower shell which are rotatably connected, wherein a wireless charging coil is arranged in a shell of the upper shell, a wristband placing groove is formed in the lower shell, and a charging switch mechanism is further arranged in the lower shell; when the upper shell and the lower shell are closed, the charging switch mechanism charges the wristband; and when the upper shell and the lower shell are opened, the charging switch mechanism does not charge the wristband. The chargingdevice can be carried along during charging, has multiple charging modes, can be compatible with charging of other electronic products, and is more convenient to maintain and replace parts through a detachable assembly mode.

The invention relates to an antiskid vehicle-mounted charging device. The device comprises a charging device body, a power supply output port, a power supply lamp, a positive electrode, a negative electrode and an antiskid strip. The power supply output port is installed on one end of the charging device body. The power supply lamp is installed on one end of the charging device body. The positiveelectrode is installed on one end of the charging device body. The negative electrode is installed on one end of the charging device body. The antiskid strip is arranged on the surface of the chargingdevice body and forms one body with the charging device body. The product does not slip and can be rapidly pulled out. The cost of the product is not increased.