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In order to improve the heating performance of fuel cell vehicles in low temperature environment, this paper analyzed the cold start process of fuel cell vehicles at low temperature, and analyzed the principle, advantages and disadvantages of heat pump heating system and Positive Temperature Coefficient (PTC) heating system. Taking a fuel cell bus as an example, the application of PTC heating system in a fuel cell vehicle is analyzed by means of real vehicle test. The research results show that PTC heating is the most suitable vehicle heating method in low temperature environment, fuel cell bus due to the large interior space, the temperature rise rate is slow, and specific suggestions are given for the current vehicle heating scheme. The heat pump heating system has higher energy utilization efficiency, the fuel cell thermal management scheme is very important to improve the driving range, strengthen the heat exchange between the heating system and the interior space to improve the interior heating speed.
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| 科 Family | 属数 Number of genus | 种数 Number of species | 占总种数比例 Percentage of total species (%) | 属 Genus | 种数 Number of species | 占总种数比例 Percentage of total species (%) |
|---|---|---|---|---|---|---|
| 鹅膏菌科Amanitaceae | 2 | 11 | 5.26 | 鹅膏菌属 Amanita | 10 | 4.78 |
| 小菇科 Mycenaceae | 2 | 12 | 5.74 | 丝盖伞属 Inocybe | 5 | 2.39 |
| 多孔菌科 Polyporaceae | 8 | 14 | 6.70 | 蜡蘑属 Laccaria | 5 | 2.39 |
| 红菇科 Russulaceae | 3 | 23 | 11.00 | 小皮伞属 Marasmius | 6 | 2.87 |
| 小菇属 Mycena | 11 | 5.26 | ||||
| 光柄菇属 Pluteus | 5 | 2.39 | ||||
| 红菇属 Russula | 17 | 8.13 | ||||
| 栓菌属 Trametes | 5 | 2.39 |
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