A power battery trailer system

Abstract

The invention relates to a power battery trailer system. The power battery trailer system comprises a compartment with a power battery assembly. The compartment is hung to the tail of an electric main vehicle body through a fast hanging mechanism. A fast separating mechanism driving the compartment to be fast separated from the main vehicle body is arranged on the tail of the main vehicle body. The power battery trailer system can be fast hung to or separated from a main vehicle, the main vehicle can be charged by cheap valley electricity at night in a trickle charging mode or charged in other spare time according to running needs, the battery life is guaranteed, and scheduling of the running mileage can be achieved at any time.

Description

technical field [0001] The invention relates to a power battery trailer system, which is applied to a pure electric city bus or a plug-in hybrid power city bus. Background technique [0002] At present, there are two main charging methods for pure electric city buses or plug-in hybrid electric city buses, that is, on-board charging and quick battery pack replacement. There are many contradictions that are difficult to reconcile. If the capacity of the on-board battery is large, the battery will be overweight, the driving resistance will increase, and the invalid energy consumption will increase. If the capacity of the on-board battery is small, the mileage between two charges will be short, resulting in the need to lay More charging piles, the cost increases. If the high-current fast charging method is adopted, it will have a serious adverse effect on the battery life. If the low-current slow charging method is adopted, it will take a long time to charge a single vehicle, a...

AI Technical Summary

Problems solved by technology

[0002] At present, there are two main charging methods for pure electric city buses or plug-in hybrid electric city buses, that is, on-board charging and quick battery pack replacement. There are many contradictions that are difficult to reconcile. If the capacity of the on-board battery is large, the battery will be overweight, the driving resistance will increase, and the invalid energy consumption will increase. If the capacity of the on-board battery is small, the mileage between two charges will be short, resulting in the need to lay More charging piles, more cost

If the high-current fast charging method is adopted, it will have a serious adverse effect on the battery life. If the low-current slow charging method is adopted, it will take a long time to charge a single vehicle, and more spare vehicles are required to meet the operational turnover. On the other hand, fast Although the method of replacing the battery pack has the advantage of using the "valley power" charging at night and completing the turnover with a certain backup battery pack, its disadvantage is that large-scale swapping stations rely on special equipment with a high degree of automation, which is expensive, even in big cities. Difficult to build in large quantities, and the operation of replacing the battery pack is troublesome, time-consuming and laborious

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