What is the Principle of Plug-in Hybrid Vehicles?

[LaGraham]

Principle of Plug-in Hybrid Electric Vehicles (PHEVs): A plug-in hybrid vehicle primarily operates on electric power, with a gasoline (or diesel) engine serving as an auxiliary power source only when the battery is depleted and cannot be promptly recharged. Plug-in hybrid vehicles represent a new type of hybrid vehicle. Plug-in hybrid vehicles are equipped with two power systems: an internal combustion engine and an electric motor. These two systems can operate independently or work in tandem to propel the vehicle. Generally, hybrid electric vehicles refer to those that combine an internal combustion engine generator with a battery-powered electric system. Characteristics of Plug-in Hybrid Vehicles: They are equipped with an engine that charges the battery and can operate in pure electric mode. Once the battery is depleted, the vehicle switches to hybrid mode (primarily powered by the internal combustion engine) while simultaneously recharging the battery. In contrast, conventional hybrid electric vehicles have a much smaller battery capacity, which only supplies and recovers energy during starting, stopping, accelerating, and decelerating. These vehicles cannot be charged externally and cannot travel long distances in pure electric mode. Usage Precautions for Plug-in Hybrid Vehicles: Properly Manage Charging Time: During use, accurately determine the charging time based on actual conditions, considering factors like frequency of use and driving distance. Under normal driving conditions, charging should commence when the battery indicator shows red and yellow lights. If only the red light remains, stop operation and charge as soon as possible to prevent severe battery life reduction due to over-discharge. Avoid Direct Sunlight: Electric vehicles must not be exposed to direct sunlight. High temperatures can increase internal battery pressure, leading to water loss, reduced battery activity, and accelerated plate aging. Prevent Plug Overheating During Charging: Loose 220V power plugs or charger output plugs, as well as oxidized contact surfaces, can cause plug overheating. Prolonged overheating may result in short circuits or poor contact, damaging both the charger and the battery, leading to unnecessary losses. Therefore, promptly clean any oxides or replace connectors if such issues are detected.