System for improving SCR conversion efficiency through automobile exhaust thermoelectric power generation

The invention discloses a system for improving SCR conversion efficiency through automobile exhaust thermoelectric power generation. The system comprises an automobile exhaust thermoelectric power generation device and an exhaust heating device. The automobile exhaust thermoelectric power generation device comprises a storage battery, a voltage stabilization circuit, an MPPT, thermoelectric powergeneration pieces, a cooling water pipeline and a cooling water tank. The exhaust heating device comprises a resistance wire net, the storage battery, a temperature sensor and an ECU. According to thesystem, low-grade automobile exhaust is adopted as a heat source, circulating water is adopted for cooling the cold ends of the thermoelectric power generation pieces, the voltage stabilization circuit is adopted for voltage stabilization, the resistance wire net is powered by the storage battery and heats the exhaust, and the gas inlet temperature of the SCR system is improved. The system is used under the low-temperatur