Analyze the maximum load profile, reduce the maximum inrush current of the vehicle through software strategy or vehicle guidance, improve vehicle operation safety, reduce vehicle design margin, reduce vehicle cost, and guide vehicle software strategy design. Maintenance reminder, based on big data, you can create a portrait of each load on the vehicle, and combine historical data and load characteristics to analyze the life of components and predict risks. For example, for a general halogen headlight, the life of the bulb is 500h to 600h, which can remind the user to replace the bulb in advance, so as to avoid replacing the lamp when it is broken.