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Do you know the Plug-in hybrid electric vehicle, including hybrid minibus?  Let’s learn about it.

Plug-in hybrid electric vehicle (PHEV) (including hybrid minibus) is a new type of hybrid electric vehicle. Different from the traditional hybrid power that combines gasoline power and electric drive, the plug-in hybrid power drive principle and drives unit are the same as electric vehicles. The only difference is that the vehicle is using an engine.

hybrid minibus

The difference between plug-in hybrid vehicles (including hybrid minibus) and ordinary hybrid vehicles: ordinary hybrid vehicles have a small battery capacity and only supply/recover energy during start/stop, acceleration/deceleration, and cannot be charged externally. Use pure electric mode to drive for a long distance; plug-in hybrid electric vehicles have relatively large batteries, which can charge externally and can be driven in pure electric mode. When the battery is using up, drive in hybrid mode (mainly internal combustion engine). And charge the battery in time.

1. The difference between plug-in hybrid electric vehicles (including hybrid minibus) and non-plug-in hybrid electric vehicles

The state has given a clear definition of new energy vehicles, that is, new energy vehicles include plug-in hybrid vehicles (including hybrid minibus), pure electric vehicles, and fuel cell vehicles. Traditional hybrid vehicles do not need external charging due to their low energy density (power battery capacity is generally less than 1.5 kWh). They only use the kinetic energy recovered during braking to charge the power battery or use the engine’s power when the vehicle is running at low speed.

The surplus power is for charge the power battery through the generator (motor reverse rotation). Plug-in hybrid vehicles (including hybrid minibus) can run in pure electric mode. It can also drive in a hybrid model where the engine and the drive motor work together. When driving in hybrid mode, the working principle is the same as that of ordinary hybrid vehicles. The driving motor is using an auxiliary driving mechanism, which mainly plays the role of “peak cutting and valley filling”, helping the engine to work in a relatively stable state.

Thereby reducing the fuel consumption and emissions of the vehicle; when driving in pure electric mode, only the power battery pack supplies energy, so as to achieve pure electric drive and zero emissions. Therefore, when the power battery pack is exhausted, it needs to be externally charged. Therefore its name is Plug-in hybrid vehicles (including hybrid minibus).

2. Advantages and disadvantages of plug-in hybrid vehicles (including hybrid minibus)

Compared with non-plug-in hybrid electric vehicles, plug-in hybrid electric vehicles (including hybrid minibus) have a larger battery capacity and can support a longer driving range. If each time is a short-distance driving, it has better-charging conditions. Plug-in hybrid electric vehicles can replace pure electric vehicles without refueling. Also, it has the advantages of pure electric vehicles. Compared with pure electric vehicles, the battery capacity of plug-in hybrid vehicles (including hybrid minibus) is much smaller. But it has the engine, transmission, transmission system, oil circuit, and fuel tank of traditional fuel vehicles. Therefore, when it is unable to charge, as long as there is a gas station, it can continue driving. That’s why the mileage is not in restrict.

The advantages of pure electric vehicles

  It also has the advantages of fuel vehicles. Plug-in hybrid electric vehicles (including hybrid minibus) combine the advantages of traditional hybrid electric vehicles. While providing a longer cruising range (referring to the hybrid model), it can also meet the needs of people to drive on pure electricity. It has played a good role. The role of energy substitution is the only way (technical route) leading to pure electric vehicles. However, due to the integration of two complete power systems of pure electric vehicles and fuel vehicles in a car, the cost of plug-in hybrid vehicles (including hybrid minibus) is relatively high, the structure is complex, and the quality is relatively large. Fuel vehicles and pure electric vehicles have disadvantages. 

However, until charging stations become widespread and the charging time is greatly shortened. And plug-in hybrid vehicles (including hybrid minibus) will exist as a transitional product between fuel vehicles and pure electric vehicles for a long time. Moreover, in the post-subsidy period, government subsidies are reduced. At the same time, consumers’ mileage demand is increased. And battery costs are reduced to a small extent, and vehicle prices cannot be increased. This provides development opportunities for plug-in hybrid vehicles (including hybrid minibus) but improves plug-in hybrids. Key core technologies such as rationalization of performance hybrid schemes for power vehicles (including hybrid minibus), integration of power systems, specialization of the core component. As well as innovation of control strategies are issues that need to be resolved urgently.

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