System and method for supplying power to on-board electrical appliances when a fuel vehicle is parked

Abstract

The invention discloses a system and method for supplying power to on-board electrical appliances when a fuel vehicle is parked. The system includes: a vehicle generator, a vehicle lead-acid battery and a lithium battery system installed in the fuel vehicle; the vehicle lead-acid battery and a lithium battery system The battery system is connected in parallel with the vehicle generator to form a charging circuit; the vehicle lead-acid battery is connected with each vehicle electrical appliance to form a power supply circuit; the lithium battery system is connected with each parking vehicle electrical appliance to form a discharge circuit; the lithium battery system includes a lithium ion battery module. Group, high-voltage components, box, battery management system protection board with charging current limiting circuit and power supply voltage detection circuit, temperature sensor and heating component; lithium-ion battery module, high-voltage components, battery management system protection board are connected in sequence The charging current limiting circuit is arranged in series between the vehicle generator and the lithium battery system, and the power supply voltage detection circuit is arranged in series in the discharge circuit. The invention has the advantages of low use cost, safety, long service life, environmental protection and long-term effective and stable operation.

Description

technical field [0001] The invention belongs to the technical field of power supply for on-board electrical appliances of fuel vehicles, and more particularly relates to a system and method for supplying power to on-board electrical appliances of fuel vehicles when they are parked. Background technique [0002] With the rapid development of science and technology, people have higher and higher requirements for the comfort of vehicles. When vehicles such as fuel trucks and RVs are parked, sometimes it is necessary to turn on the air conditioner, audio player, charger, refrigerator, kitchen Wei and other car electrical appliances. [0003] In the past, when the fuel vehicle used the original car air conditioner or used the on-board electrical appliances for a long time, it was necessary to turn on the vehicle at idle speed to drive the compressor or charge the lead-acid battery. There are many problems with vehicles idling for a long time. One is that it affects the life of t...

AI Technical Summary

Problems solved by technology

[0005] At present, there are two ways to supply power to the parking on-board electrical appliances without starting the engine when the fuel vehicle is parked: one way is to install a micro fuel generator set on the vehicle to supply power. This method is suspected of illegal modification, low fuel efficiency, and loud running noise. , large pollution emissions, and considerable safety hazards; another way is to supply power from vehicle lead-acid batteries, but lead-acid batteries have defects such as large self-consumption, low discharge efficiency, less power storage, and short service life.

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