The invention provides a P-gear control method and device for a new energy automobile, and the method comprises the steps: obtaining the motion state of the new energy automobile under the condition that a high-voltage power-off instruction is received; under the condition that the motion state of the new energy automobile meets a preset condition, a low-voltage holding signal and a P-gear request signal are generated; the P-gear request signal is sent to an electronic parking brake system; judging whether the low-voltage holding signal is an effective signal or not; and under the condition that the low-voltage holding signal is an effective signal, a high-voltage accessory is controlled to continuously supply power to the electronic parking brake system, so that the electronic parking brake system executes P-gear operation based on the P-gear request signal. After the high-voltage power-off instruction is recognized, the low-voltage holding signal is generated to delay closing of the high-voltage accessory, that is, the high-voltage accessory continues to supply power to the electronic parking brake system to execute the P-gear operation, so that the working condition that the P-gear operation cannot be executed in the prior art can be avoided, and driving safety is guaranteed.
本申请提供一种新能源汽车的P档控制方法及装置,该方法包括:在接收到高压下电指令的情况下,获取新能源汽车的运动状态;在所述新能源汽车的运动状态满足预设条件的情况下,生成低压保持信号和P档请求信号;将所述P档请求信号发送至电子驻车制动系统;判断所述低压保持信号是否为有效信号;在所述低压保持信号为有效信号的情况下,控制高压附件继续为电子驻车制动系统供电,以使电子驻车制动系统基于所述P档请求信号执行P档操作。本申请通过在识别到高压下电指令后,生成低压保持信号,以延迟关闭高压附件,即可由高压附件继续为电子驻车制动系统供电执行P档操作,从而可避免出现现有技术中无法执行P当操作的工况,保证了行车安全。
P-gear control method and device for new energy automobile
一种新能源汽车的P档控制方法及装置
2024-03-15
Patent
Elektronische Ressource
Chinesisch
IPC: | B60L PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES , Antrieb von elektrisch angetriebenen Fahrzeugen |
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