Dissecting New Energy Vehicles

New energy vehicles adopt new power systems and rely entirely or mainly on new energy sources for propulsion, including plug-in hybrid (including extended range) vehicles, pure electric vehicles, and fuel cell vehicles. The exhibit is a dissecting car of BYD's pure electric vehicle, presenting the internal structure of the pure electric vehicle in a semi sectional form. The left half of the exhibit retains the exterior and interior design, while the right half has the cover removed, clearly displaying the composition, spatial layout, and cross-sectional structure of the six major systems of the car's internal power, body, chassis, electrical, intelligent networking, and interior and exterior decoration.

The unit is designed for unsupervised public use: controls are recessed or shielded, moving parts are enclosed, and the interface is operable by a child of about six with no instruction. Where a screen is used, the language can be switched without changing the hardware, and the content can be replaced on site.

The driving energy of pure electric vehicles is entirely provided by electrical energy, and the core components are the power battery, driving motor, and electronic control system. (1) Power battery is the "energy warehouse" of pure electric vehicles. The power battery of a pure electric vehicle is composed of multiple battery cells, and the key components of a single battery cell include the positive electrode, negative electrode, electrolyte, and separator. Lithium ion batteries are currently the mainstream of power batteries, and their working principle is that lithium ions are carried by the electrolyte and migrate between the positive and negative electrodes through the separator, achieving charging and discharging. (2) The driving motor of a pure electric vehicle is equivalent to the engine of a gasoline powered vehicle. On the one hand, it can serve as an electric motor, converting the battery's electrical energy into mechanical energy to drive the vehicle forward; On the other hand, it can also serve as a generator, converting or partially converting the kinetic and potential energy during vehicle coasting, deceleration, or downhill into electrical energy. Currently, the driving motor uses permanent magnets.