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The 48 V hybrid power system and Battery Management System (BMS) control principle were analyzed, the influence of 12 V power supply voltage variation on 48 V power batteries was tested and studied, it is found that, when the 12 V power supply voltage is low, the BMS Microcontroller Unit (MCU) chip has a cyclic reset phenomenon and BMS no respond issue. For this problem, this paper proposed a BMS control logic optimization. The BMS detects that the battery state data will not be saved in MCU chip when the 12 V power supply voltage is lower than 6 V. This control logic can solve the BMS no respond issue by preventing the MCU writing the fault value. It is verified by real vehicles that the control logic can effectively improve the anti-low voltage ability of BMS.
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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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