The invention discloses a new energy automobile multi-source system and a control method thereof, and belongs to the technical field of new energy automobiles. According to the multi-source system of the new energy automobile, a set of auxiliary power supply is added on the basis of an original automobile high-voltage framework, and the whole automobile control module communicates with the BMS main control modules of the two sets of batteries to obtain the states of the two sets of batteries. When the comfortable electric accessory needs to work, the whole vehicle control module obtains the states of SOC, voltage, current, temperature, alarm information and the like of the two sets of battery systems, an auxiliary power supply is preferentially used for supplying power to the comfortable electric accessory, power supply of a power battery to a main drive motor is not affected, normal starting of the comfortable electric accessory is guaranteed with the lowest cost, and the comfortable electric accessory can work normally. The endurance mileage of the vehicle is not reduced; when the electric quantity of the auxiliary power supply is insufficient or a fault occurs, the whole vehicle control module can switch the power battery to supply power to the comfortable electric accessory by controlling the corresponding contactor, so that serious consequences such as a high-temperature fault of the power battery caused by the fact that the comfortable electric accessory cannot be normally started in the state are prevented.
一种新能源汽车多源系统及其控制方法,属于新能源汽车技术领域。新能源汽车多源系统在原车高压架构基础上增加一套辅助电源,通过整车控制模块分别与两套电池的BMS主控模块进行通信,获取两套电池状态。当舒适性电附件需要工作时,由整车控制模块获取两套电池系统的SOC、电压、电流、温度、报警信息等状态,优先使用辅助电源来给舒适性电附件供电,不影响动力电池给主驱电机供电,用最低成本既保证了舒适性电附件的正常开启,又保证车辆续航里程不减少;当辅助电源电量不足或有故障时,整车控制模块可通过控制相应接触器,切换由动力电池给舒适性电附件供电,防止在此状态下舒适性电附件无法正常开启进而造成动力电池高温故障等严重后果。
New energy automobile multi-source system and control method thereof
一种新能源汽车多源系统及其控制方法
2025-04-25
Patent
Electronic Resource
Chinese
IPC: | B60L PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES , Antrieb von elektrisch angetriebenen Fahrzeugen |
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