An access device is provided for use in an access control system. The access device includes a processor having control of a door lock, and a communication module connected to the processor. The processor is able to receive a reservation certificate presented by a portable terminal through the communication module. The processor activates the door lock when the current reservation certificate has been presented and disables an alarm system when the current reservation certificate has been presented.

Provided is a charging controller that controls a process of charging a battery from an external power source. When an outside air temperature is equal to or lower than a predetermined temperature, the charging controller charges the battery from a time earlier than a scheduled time of use of the battery by a predetermined time until the scheduled time of use. Thus, even when the outside air temperature is equal to or lower than the predetermined temperature, the temperature of the battery has been raised by heat generated during the charging by the time of use of the battery.

A battery cell short circuit detection device includes: a control unit that controls operation of a direct current-direct current converter; a first acquisition unit that acquires a storage rate of the battery; a second acquisition unit that acquires a current flowing into the battery and a current flowing out of the battery when the direct current-direct current converter is operating; a third acquisition unit that acquires a terminal voltage value that is a voltage that appears at a terminal of the battery when the direct current-direct current converter is not operating; and a determination unit that determines presence or absence of the short circuit between the battery cells based on an average storage rate indicating an average value of the storage rate of the battery, an average inflow current value indicating an average value of the current flowing into the battery, and the terminal voltage value.

Embodiments of this application provide a charging control method, apparatus, and system, a server, and a medium. In an example method, a generation sequence of a charging policy stored in a first terminal and a generation sequence of a charging policy stored in a second terminal are compared in the first terminal, to determine a relatively new charging policy in the first terminal and the second terminal as a target charging policy. The target charging policy may subsequently configure a charging parameter, so that the charging parameter configured in a charging process is adapted to a current performance status of a power battery of a vehicle.

In an in-vehicle shutdown device, only a pyro-fuse is provided on one line of a positive-side line and a negative-side line as a device that shuts off the one line, and a breaker of a different type from the pyro-fuse, which is operable to be switched by a control signal to shut off and stop shut-off of the other line, is provided on the other line. A controller controls the pyro-fuse to cut the one line in the event of an abnormality that the breaker is stuck closed.

A vehicle control apparatus includes a control system. The control system includes a processor and a memory that are communicably coupled to each other, and executes a polarization eliminating mode in which polarization is eliminated by controlling an energization state of an electric power storage device while a vehicle is traveling. The control system sets a first necessary time to eliminate the polarization based on a polarization state of the electric power storage device, acquires a second necessary time to an arrival of the vehicle at a destination, permits the polarization eliminating mode to be executed while the vehicle is traveling in a case where the first necessary time is shorter than or equal to the second necessary time, and refrains from permitting the polarization eliminating mode to be executed while the vehicle is traveling in a case where the first necessary time is longer than the second necessary time.

The embodiments of the present application provide a method, apparatus, device, and medium for electric energy transmission. The method includes: determining a resource value of a unit of electric energy of a grid at a target time; under a condition that the resource value is greater than or equal to a first resource threshold, determining a number of available batteries in a battery swapping station and an ordered number of batteries in the battery swapping station within a target time period; and under a condition that the number of available batteries is greater than a number of reserved batteries, controlling a charging and discharging module to transmit electric energy of a first battery in the battery swapping station to the grid.

A controller and a controlling method of operating a fuel cell are provided. The controller for operating a fuel cell in a system, the system being configured to generate an output through the fuel cell and a battery, includes an input part configured to receive a system request output of a user, a calculating part configured to calculate a fuel cell output by excluding a battery output from the system request output of the user, the battery output being derived through a plurality of factors, the plurality of factors including residual available energy of the fuel cell, and an operating part configured to control the operation of the fuel cell in response to the fuel cell output calculated by the calculating part.

An electric vehicle charge equipment (EVSE) for supplying a charge current to an electrical vehicle includes: a liquid cooled charge cable with a charge connector for connecting to the electrical vehicle; and a charge current regulating device for regulating the charge current based on a temperature of the cooling liquid. Regulating the charge current includes: charging the electrical vehicle with a first charge current for an initial time period and thereafter charging the electrical vehicle with a second charge current that is greater than the first charge current, and/or reducing the charge current as long as the temperature of the cooling liquid is below a temperature threshold, and/or charging the electrical vehicle with a first charge current as long as the temperature of the cooling liquid is below a temperature threshold and thereafter charging the electrical vehicle with a second charge current that is greater than the first charge current.

A vehicle battery management apparatus and a method thereof are provided. The vehicle battery management apparatus includes a battery that supplies power to a vehicle, a cooling device that cools the battery and a controller that monitors a state of the battery during parking and controls the cooling device to cool the battery with a cooling level corresponding to the state of the battery.