What is the reason why the BYD Qin cannot switch to pure electric mode?

[KingDella]

BYD Qin's inability to switch to pure electric mode may be due to low battery power or low voltage in individual battery cells of the battery pack, or faults in the battery sampling wires or collectors. Below is relevant information: 1. Introduction: EV mode is essentially pure electric drive. When the vehicle's battery power is insufficient, the vehicle will automatically start the engine to drive and simultaneously charge the battery. Once the vehicle's battery reaches a usable level, the engine will automatically shut off, and the vehicle will continue to operate in pure electric mode. 2. Advantages: EV mode offers three major advantages: environmental friendliness, energy efficiency, and simplicity, replacing traditional fuel engines and eliminating the need for a transmission during driving. In urban use, it can save fuel, and the engine does not produce any noise. Hybrid vehicles, compared to pure electric vehicles, have certain advantages, with extended range making vehicle use more convenient.