Double-battery linkage device for electric power-assisted bicycle

Abstract

The invention discloses a double-battery linkage device for an electric power-assisted bicycle. The double-battery linkage device comprises a main battery pack, an auxiliary battery pack, a main battery pack control module, an auxiliary battery pack control module, a detection module, a main controller and a kickstand piezoelectric power generation assembly. The main battery pack is connected witha load to provide power for an electric power-assisted bicycle; a main charging relay is arranged between the main battery pack and the load; the main charging relay controls conduction between the main battery pack and the load, the auxiliary battery pack is electrically connected with the main battery pack and the load, a mutual charging circuit and an auxiliary charging relay are arranged between the auxiliary battery pack and the main battery pack and between the auxiliary battery pack and the load respectively, and the kickstand piezoelectric power generation assembly is electrically connected with the auxiliary battery pack. The invention belongs to the technical field of electric power-assisted bicycle power sources, and particularly provides a double-battery linkage device for anelectric power-assisted bicycle. The double-battery linkage device is high in power supply efficiency and high in reliability and provides power for a standby battery pack of the electric power-assisted bicycle through self weight.

Description

technical field [0001] The invention belongs to the technical field of power supply for electric power-assisted bicycles, and specifically refers to a double-battery linkage device for electric power-assisted bicycles. Background technique [0002] An electric power-assisted bicycle is a vehicle that uses batteries as its energy source and converts electrical energy into mechanical kinetic energy through controllers, motors and other components. As one of the main components of an electric power-assisted bicycle, the battery's performance and cost will directly or indirectly affect the overall performance and cost of the electric vehicle. [0003] Due to the limited capacity of batteries, in order to improve the battery life of electric vehicles, some dual-battery electric vehicle products using two battery packs have appeared on the market. The control method of traditional dual-battery electric vehicles is mainly through the switch control contactor. To control the double...

AI Technical Summary

Problems solved by technology

[0003] Due to the limited capacity of batteries, in order to improve the battery life of electric vehicles, some dual-battery electric vehicle products using two battery packs have appeared on the market. The control method of traditional dual-battery electric vehicles is mainly through the switch control contactor. To control the double battery pack, that is, the user realizes the opening and closing of the two battery packs through the switch. However, there is uncertainty when switching between the two battery packs through artificial control. If the battery pack is over-discharged and does not switch in time When the battery pack causes the system to stop running, it is easy to cause a safety accident. This problem needs to be solved. In addition, when riding for a long time, it is difficult to ensure that the power of the electric power-assisted bicycle is sufficient even with a double battery pack. The electric power-assisted bicycle with a double battery pack is due to The number of batteries increases, resulting in an increase in weight. If it is difficult to find a place to charge, the electric power-assisted bicycle with dual battery pack design will become a trouble for the rider, and it is very inconvenient to ride or push

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