Electric vehicle power monitoring and alarm device

Abstract

The invention relates to an electric vehicle power supply monitoring warning device which comprises a liquid crystal display module, a main processor circuit, a second communication interface circuit, a first communication interface circuit, a bottom layer processor circuit, voltage monitoring circuits, a current monitoring circuit and a battery pack. The battery pack comprises a plurality of batteries. The number of the voltage monitoring circuits is the same as the number of the batteries. A group of voltage monitoring circuits are connected to a positive electrode and a negative electrode of each battery in a bridging mode. The current monitoring circuit is connected in series into the battery pack. The output ends of the voltage monitoring circuits and the output end of the current monitoring circuit are connected with the corresponding input ends of the bottom layer processor circuit respectively. The corresponding output ends of the bottom layer processor circuit are connected with the first communication interface circuit. The second communication interface circuit and the liquid crystal display module are connected with the main processor circuit. According to the electric vehicle power supply monitoring warning device, the risk that the performance of the whole battery pack is lowered is lowered, the service life of the whole battery pack is prolonged, system maintaining cost is reduced, and whole vehicle reliability is improved.

Description

technical field [0001] The invention belongs to the technical field of storage battery state monitoring, in particular to an electric vehicle power supply monitoring and alarming device. Background technique [0002] At present, lead-acid battery packs are widely used for power supply in small electric vehicles. In actual work, due to manufacturing, aging and other factors, in a group of battery packs, individual batteries often have insufficient or low voltage. As a result, the total battery voltage drops, thereby increasing the current of the battery pack, and long-term use will lead to a decrease in the life of the entire battery pack. At present, in small electric vehicles, no measures are taken to detect the voltage of each battery in the battery pack, which often leads to a reduction in the life of the entire battery pack and increases the maintenance cost of the entire vehicle. Contents of the invention [0003] In order to solve the above-mentioned technical probl...

AI Technical Summary

Problems solved by technology

[0002] At present, lead-acid battery packs are widely used for power supply in small electric vehicles. In actual work, often due to manufacturing, aging and other factors, in a set of battery packs, individual batteries often have insufficient or low voltage. As a result, the total battery voltage will drop, and the current of the battery pack will increase. Long-term use will lead to a decrease in the life of the entire battery pack.

At present, in small electric vehicles, no measures are taken to detect the voltage of each battery in the battery pack, which often leads to a reduction in the life of the entire battery pack and increases the maintenance cost of the entire vehicle.

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