Novel lithium ion battery group with protective device

Abstract

The invention provides a novel lithium ion battery group with a protective device. A lithium ion battery group is comprised. A temperature detection device is arranged on one side of the lithium ion battery group. A voltage detection device is arranged on the other side of the lithium ion battery group. A displacement sensor is arranged on the casing body of the lithium ion battery group. The temperature detection device is connected with a temperature display instrument. The voltage detection device is connected with a battery remaining power display instrument. The battery remaining power display instrument is provided with an alarm device. The alarm device is a voice prompt or a bell. The novel lithium ion battery group provided by the invention has the advantages of simple structure, reasonable design, convenient operation and danger preventing, and the service life of a lithium ion battery is prolonged.

Description

technical field [0001] The invention relates to a lithium ion battery, in particular to a novel lithium ion battery pack with a protection device. Background technique [0002] Compared with lead-acid batteries and nickel-metal hydride batteries, lithium-ion batteries have the characteristics of high working voltage, high specific energy, long cycle life and good environment, so they have been widely used as power sources for electric bicycles or electric motorcycles. However, since lithium-ion batteries use organic electrolytes, the electrolytes have low lightning and boiling points, and are easy to decompose at lower temperatures, producing gas, and the internal pressure of the battery rises sharply, causing the battery to explode, which is a serious safety hazard. After multiple cycles and high current discharge, it is easy to cause the shell of the lithium-ion battery case to expand, which is also a certain hidden danger to the safety of the battery. Contents o...

AI Technical Summary

Problems solved by technology

[0002] Compared with lead-acid batteries and nickel-metal hydride batteries, lithium-ion batteries have the characteristics of high working voltage, high specific energy, long cycle life and good environment, so they have been widely used as power sources for electric bicycles or electric motorcycles. However, since lithium-ion batteries use organic electrolytes, the electrolytes have low lightning and boiling points, and are easy to decompose at lower temperatures, producing gas, and the internal pressure of the battery rises sharply, causing the battery to explode, which is a serious safety hazard. After multiple cycles and high current discharge, it is easy to cause the shell of the lithium-ion battery case to expand, which is also a hidden danger to the safety of the battery.

Images