System and method for supplying power to vehicle-mounted electric appliance when fuel vehicle is parked

Abstract

The invention discloses a system and a method for supplying power to a vehicle-mounted electric appliance when a fuel vehicle is parked. The system comprises a vehicle power generator, a vehicle lead-acid storage battery and a lithium battery system additionally arranged on a fuel vehicle, wherein the vehicle lead-acid storage battery and the lithium battery system are connected in parallel and then connected with the vehicle power generator to form a charging loop, the vehicle lead-acid storage battery is connected with each vehicle-mounted electric appliance to form a power supply loop, thelithium battery system is connected with each parking vehicle-mounted electric appliance to form a discharging loop, the lithium battery system comprises a lithium ion battery module, a high-voltage component, a box body, a battery management system protection plate with a charging current-limiting circuit and a power supply voltage detection circuit, a temperature sensor and a heating assembly, the lithium ion battery module, the high-voltage component and the battery management system protection plate are connected in sequence, the charging current-limiting circuit is serially connected between the vehicle power generator and the lithium battery system, and the power supply voltage detection circuit is serially connected to the discharging loop. According to the invention, the system islow in use cost, safe, long in service life, environmentally friendly and capable of effectively and stably operating for a long time.

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.

Images