Electric vehicle lead-acid battery pack protection module

Abstract

The invention discloses an electric vehicle lead-acid battery pack protection module, and relates to the technical field of electric vehicles. The system comprises a single-chip microcomputer used forelectric quantity monitoring, state analysis and monitoring. The current detection unit is used for detecting the charging current and the discharging current; the voltage detection unit is used fordetecting the charging voltage and the discharging voltage; the charging protection unit is used for realizing opening and closing of the charging circuit; and the output protection unit is used for opening and closing the battery pack output circuit. According to the invention, a protection module is connected in series in a battery pack charging and anti-electricity circuit loop, and a single-chip microcomputer, a charging protection unit and an output protection unit are arranged; the problems that an existing charger is used mistakenly, a single battery of a battery pack breaks down, a protection system is prone to failure, and a protection function cannot be provided are solved.

Description

technical field [0001] The invention belongs to the technical field of electric vehicles, in particular to a protection module for lead-acid battery packs of electric vehicles. Background technique [0002] Most of the existing lead-acid battery protection systems and devices are installed at the charger side; when the charger fails, or the charger is used incorrectly, such as a 48V battery using a 60V charger, the battery protection system will fail; at the same time, the current Some lead-acid battery protection systems judge whether the lead-acid battery is overcharged according to the battery voltage and current. Collect the voltage and current that correctly reflect the actual state of the battery. This state will also cause the protection system to fail and cannot protect the battery pack. Contents of the invention [0003] The purpose of the present invention is to provide a kind of electric vehicle lead-acid battery group protection module, by connecting the prote...

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a kind of electric vehicle lead-acid battery group protection module, by connecting the protection module in series in the battery pack charging and anti-electricity circuit loop, setting single-chip microcomputer, charging protection unit and output protection unit; Incorrect use and failure of a single battery in the battery pack, the protection system is prone to failure and cannot provide protection.

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