The method belongs to the field of new energy automobiles, and comprises the following steps: obtaining a power battery temperature value, and calculating a power battery average temperature Tm according to the power battery temperature value; comparing the average temperature Tm of the power battery with a set temperature threshold value to generate a comparison result; according to a comparison result of the average temperature Tm of the power battery and a set temperature threshold value; and selecting a starting strategy and enabling the vehicle to execute the selected starting strategy. According to the scheme, different starting control strategies are adopted, the starting driving mechanism of the hybrid vehicle can be adjusted, the situation that the hybrid vehicle breaks down in starting under the extreme temperature condition and cannot run normally is avoided, and the starting stability of the hybrid vehicle is improved; and meanwhile, aiming at the potential safety hazards of discharging under the low-temperature condition, possibly generating lithium metal dendritic crystals and puncturing a battery diaphragm, the battery is heated through the heating element under the low-temperature condition, so that the lithium metal dendritic crystals are prevented from being generated, and the potential safety hazards are reduced.
本发明属于新能源汽车领域,通过获取动力电池温度值,根据动力电池温度值计算动力电池平均温度Tm;将动力电池平均温度Tm与设定温度阀值进行比较生成比较结果;根据动力电池平均温度Tm与设定温度阀值的比较结果;选择起步策略并使车辆执行选择的起步策略。上述方案中采用不同的起步控制策略,能够调节混动汽车起步驱动机制,避免混动汽车在极端温度条件下起步出现故障且导致不能正常行驶,提升了混动汽车起步的稳定性;同时,针对在低温条件下放电,可能生成锂金属枝晶,存在刺穿电池隔膜的安全隐患,采取在低温条件下通过加热元件对电池进行加热,从而避免了生成锂金属枝晶,降低了安全隐患。
Method and device for controlling starting and running of hybrid electric vehicle
一种混合动力汽车起步行驶控制方法及装置
2023-08-29
Patent
Electronic Resource
Chinese
IPC: | B60W CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION , Gemeinsame Steuerung oder Regelung von Fahrzeug-Unteraggregaten verschiedenen Typs oder verschiedener Funktion / H01M Verfahren oder Mittel, z.B. Batterien, für die direkte Umwandlung von chemischer in elektrische Energie , PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY |
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