Hybrid power system and coupling operation method thereof

Abstract

The embodiment of the invention provides a hybrid power system and a coupling operation method thereof. The system comprises a fuel cell system, an internal combustion engine system, and a hybrid transmission, wherein the fuel cell system comprises a fuel cell stack, a storage battery, an inverter, a motor, a converter and a hydrogen tank, the internal combustion engine system comprises an internal combustion engine, a storage battery, a hydrogen tank, an oil tank and a clutch, the first input end of the hybrid transmission is connected with the motor, and the second input end of the hybrid transmission is connected with the torque output end of the internal combustion engine through the clutch. According to the hybrid power system and the coupling operation method thereof provided by theembodiment of the invention, when the hybrid power system works normally, the fuel cell system serves as a first power source, the internal combustion engine carries out power assistance according tothe working condition demand, and efficient and clean combustion of the internal combustion engine can be achieved by controlling the operation modes of the internal combustion engine under differentworking conditions. The fuel cell system can meet stricter emission and fuel consumption regulations, meanwhile the manufacturing cost of the fuel cell system is reduced by introducing the internal combustion engine system with low cost and reliable operation, and the hybrid power system has a good application prospect.

Description

technical field [0001] Embodiments of the present invention relate to the technical field of vehicle power, and in particular to a hybrid power system and a coupling operation method thereof. Background technique [0002] After more than 100 years of development of the traditional internal combustion engine, the manufacturing cost, technology, and performance of the internal combustion engine have been greatly improved; as the emission and fuel consumption regulations in the automotive field become more and more stringent, it is no longer possible to rely solely on the internal combustion engine for the automotive powertrain. Meeting the requirements of fuel consumption and emissions shows the shortcomings of traditional powertrains; OEMs and scientific research institutions have to seek more advanced energy and power technologies to reduce fuel consumption and emissions to meet the requirements of regulations. [0003] Due to its characteristics of zero emission and high co...

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Problems solved by technology

[0004] In order to solve the problems in the prior art in relying solely on the internal combustion engine system and solely relying on the fuel cell system for power output, an embodiment of the present invention provides a hybrid power system and its coupling operation method

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