An Electric Vehicle (EV) charging system and method is disclosed. The system includes EV with a battery, charge control device, a portable transponder, a charging station with energy management device, a cable, a transmitter. The vehicle ID and SoC information is received from the vehicle, and the information is transmitted to the internet server along with charging station ID. The portable transponder is registered with the internet server which includes transponder ID and associated vehicles or vehicle IDs. Once the request for payment authorization is received from the charging station by the server, the server verifies the information and approves or denies the request. Upon approval of the request, the charging can commence. The portable transponder can be used for charging a second vehicle, as long as the second vehicle is also registered with the server.

A charging base, including a charging circuit, a power supply circuit and a control unit; where the control unit is electrically connected to the charging circuit and the power supply circuit; when a charging voltage or a charging current of the charging circuit exceeds a preset threshold, the control unit controls a connecting line on the charging base to connect to a ground to form a short circuit and be disconnected from an external charging power supply, and controls a charging mode of the charging circuit to switch to a power supply mode of the power supply circuit for supplying power to a safety reminder unit provided on the charging base. The solution in the embodiments can turn off the power output in time and provide a safety alarm when the hardware circuit of the charger fails.

There is provided a device or the like capable of improving the convenience of reproduction under various conditions of the characteristics of a secondary battery by using a simulated battery. Based on the communication between the electronics and/or the charger coupled to the electronics, and the simulated battery control device, the operation of the simulated battery mounted on the electronics is controlled, and the voltage corresponding to the current command value is applied to the specified load. Then, the operating characteristic information corresponding to the operating characteristic of the specified load corresponding to the applied voltage is output to the output interface of the electronics. The operating characteristics of the specified load can be grasped when voltage corresponding to the current command value is applied to the specified load of the electronics, and therefore the convenience of the user of the electronics can be improved.

The present invention provides a management system for managing a battery mounted on a vehicle, comprising: an acquisition unit configured to acquire rank information indicating a product rank set by a user as a reuse destination of the battery; and a notification unit configured to notify the user of restriction item information indicating an item for restricting a function of the vehicle such that a deterioration state of the battery at a predetermined time satisfies a request state of the product rank, based on the rank information acquired by the acquisition unit.

An operation management device includes: an information acquisition unit configured to acquire information necessary for charging an on-vehicle battery of a vehicle entering a charging facility in which charging spaces coexist, power transmission devices having different amounts of transmission power being installed in the charging spaces; and an optimization unit configured to optimize a charging schedule for increasing a charge amount of the on-vehicle battery to a target charging level by charging with an available power transmission device in the charging spaces based on the acquired information so that power consumption in the charging facility is suppressed to a maximum allowable power amount or less.

A device or an accessory may include a near-field communications antenna and a soft magnetic ring concentric with the near-field communications antenna. The device or accessory may further include at least one wireless charging coil concentric with the near-field communications antenna, a rectifier coupled to the at least one wireless charging coil, and a battery configured to receive a rectified voltage from the rectifier. The soft magnetic ring may be used to shunt magnetic flux from one or more nearby magnets in external electronic devices to prevent the magnets from repelling each other. The soft magnetic ring may be attracted to a magnet in an external device to help align wireless charging coils in the two mated devices.

A Depth of Charge (DOC) setting apparatus includes a charging and discharging unit for completely charging a battery to a set target voltage and discharging the completely-charged battery; a profile obtaining unit for obtaining a voltage profile for capacity and voltage of the battery while the battery is charged and discharged and obtaining a differential profile for capacity and differential voltage of the battery from the obtained voltage profile; and a processor for sequentially selecting any one of a plurality of preset voltages and setting the selected preset voltage as the target voltage and for obtaining a feature value for a target peak in each of a plurality of differential profiles and setting a DOC for the battery based on the plurality of obtained feature values.

Provided is a method of controlling a battery pack, and a battery pack controlled by the method. A battery pack includes a plurality of slave battery modules, each of the slave battery modules including a battery that includes at least one battery cell and a slave controller that is configured to control charge and discharge of the battery, a master battery module including a master controller that is configured to control the slave controller, and a communication cable having formed thereon a first port to which the master controller is connected and a plurality of second ports to which the slave controller is connected. The first port includes an identification terminal configured to output an identification signal which is an electrical signal corresponding to the number of the second ports. A method of controlling the battery pack is provided.

A wireless battery management system includes a plurality of slave BMSs coupled to a plurality of battery modules in one-to-one correspondence. Each slave BMS is configured to operate in active mode and sleep mode. Each slave BMS is configured to wirelessly transmit a detection signal indicating a state of the battery module. The wireless battery management system further includes a master BMS configured to wirelessly receive the detection signal from each of the plurality of slave BMSs. The master BMS is configured to set a scan cycle and a scan duration for each of the plurality of slave BMSs based on the detection signal, and wirelessly transmit a control signal to the plurality of slave BMSs. The control signal includes a wireless balancing command indicating the scan cycle and the scan duration set for each of the plurality of slave BMSs.

A secondary battery management device is connected with electronic equipment using a secondary battery as a driving power supply via the Internet. The secondary battery management device acquires performance information of the secondary battery from the electronic equipment, and measures a degradation level of performance of the secondary battery during a predetermined unit period. The secondary battery management device estimates a degrading speed of the secondary battery on the basis of the degradation level. The secondary battery management device may notify a user of the electronic equipment of the replacement timing of the secondary battery, use fees of the secondary battery, and the like.