A method for adaptive adjustment of public transport USB charging power

By monitoring the remaining power of the low-voltage system and the power status of charging equipment in public transportation vehicles in real time, and adopting an adaptive adjustment method, the problem of unreasonable allocation of USB charging resources is solved, achieving low-cost and efficient charging management, and improving the economy of the vehicle and the intelligence of charging services.

CN122178516APending Publication Date: 2026-06-09ZHEJIANG CRRC ELECTRIC VEHICLE CO LTD
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Patent Information

Authority / Receiving Office
CN Β· China
Patent Type
Applications(China)
Current Assignee / Owner
ZHEJIANG CRRC ELECTRIC VEHICLE CO LTD
Filing Date
2026-01-20
Publication Date
2026-06-09

AI Technical Summary

Technical Problem

In the existing technology, the allocation of USB charging port resources in public transportation vehicles cannot dynamically adapt to the actual power status of passengers' devices, which leads to increased costs of the vehicle's electrical system and unreasonable allocation of charging resources. It is difficult to achieve efficient, reasonable and on-demand allocation while ensuring stable power supply to other key equipment in the vehicle.

Method used

By monitoring the dynamic remaining power of the vehicle's low-voltage system in real time, the real-time demand of charging devices and battery status are obtained. An adaptive adjustment method is adopted, including setting differentiated control coefficients and global scaling coefficients, to prioritize the charging needs of devices with low power and to perform intelligent power allocation when the total demand exceeds the limit, ensuring that the system operates within safety constraints.

Benefits of technology

It reduces vehicle hardware costs and energy consumption, improves the availability and intelligence of charging services, enables dynamic power optimization allocation when vehicle status changes, and ensures the stable operation of the vehicle's electrical system.

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Abstract

This invention discloses an adaptive adjustment method for USB charging power in public transportation, relating to the field of power control technology. The main steps include: First, acquiring the total power budget available for USB charging and the power requirements of each charging port in real time; then, determining whether the total power budget meets the total demand: if it does, allocating power to each port that does not exceed its rated power and matches the device's requirements; if not, setting a control coefficient for the port based on the device's battery level (the lower the battery level, the higher the coefficient), and calculating a global scaling coefficient based on the total power budget and the control coefficient, then combining both to allocate power to each port that does not exceed its rated power, ensuring that the total power supply does not exceed the budget; finally, controlling each port to output power according to the allocated power and returning to the initial steps, achieving dynamic cyclic adjustment. This invention reduces vehicle hardware costs and energy consumption, improving the overall vehicle's economy and cost-effectiveness.
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