Vehicular DC power supply device

Abstract

The invention discloses a vehicular DC power supply device which comprises a power distribution box, an AC input power supply of 220 V, a vehicular silicon rectification generator, a vehicular original accumulator pack, an emergent accumulator pack, a singlechip, an AC solid-state relay, a silica gel heating control switch, an accumulator control switch, a sampling input unit, a DC switch array, an IC card socket, a singlechip DC switch and a DC voltage-stabilizing unit, wherein the AC solid-state relay is connected between the AC input power supply of 220 V and the power distribution box, the control end of the silica gel heating control switch is connected with the singlechip which is connected with the control end of the accumulator control switch, the input end of the DC switch array is connected with the power distribution box, the output end of the DC switch array is connected with vehicular electrical equipment, the singlechip DC switch is connected with the singlechip, the DC voltage-stabilizing unit provides power for the singlechip, the emergent accumulator pack is arranged at the input end of the DC voltage-stabilizing unit, and the output end of the DC voltage-stabilizing unit is connected with the singlechip DC switch. The invention avoids impact caused by the centralized electrification of a power supply, reduces the switching on or off operation of system operators to the equipment and can automatically detect the charging and the discharging states of the accumulators and prolong the working time of the system in an emergent state.

Description

technical field [0001] The invention relates to a vehicle-mounted DC power supply device, in particular to a DC vehicle-mounted power supply device controlled by a single-chip microcomputer and an IC card, which can be directly used for DC power supply of a vehicle-mounted system. Background technique [0002] Vehicle-mounted mobile information systems are widely used in military and civilian fields due to their flexibility and high degree of informatization, especially in earthquake relief, emergency rescue, resource exploration and other fields. In the previous vehicle-mounted mobile system design, the key considerations were vehicle type selection, system software / hardware platform construction, system function, system reliability, lightning protection, and rain-proof design, while the vehicle-mounted mobile system Insufficient consideration is given to identification, power supply design, and actual use conditions, especially the measures related to system security such ...

AI Technical Summary

Problems solved by technology

In the previous vehicle-mounted mobile system design, the key considerations were vehicle type selection, system software / hardware platform construction, system function, system reliability, lightning protection, and rain-proof design, while the vehicle-mounted mobile system Insufficient consideration is given to identification, power supply design, and actual use conditions, especially the measures related to system security such as identification. Most vehicle-mounted mobile systems only set login passwords at the system level. Power on the device

In addition, in actual use, when there are many vehicle-mounted devices, there are too many power-on / power-off operations for the devices. Some vehicle-mounted system operators try to save trouble, and put all the power switches of the vehicle-mounted devices in the "on" state, and only use the power supply switch to control All device on / off conditions

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