Battery pack with intelligent discharge protection function

Abstract

The invention discloses a battery pack with intelligent discharge protection function, comprising a lithium ion battery cell group A1, wherein the ion battery cell group A1 is connected with a battery cell protection control circuit A2; the ion battery cell group A1 is connected with a discharge MOS (metal oxide semiconductor); the discharge MOS is connected with a charge MOS; the charge MOS is connected with a resistor R; both of the discharge MOS and the charge MOS are connected with a drive circuit; the both ends of the resistor R are connected to a resistance-capacitance network; the resistance-capacitance network is connected with an over-current and short-circuit detection protection circuit; and the discharge MOS is connected with an intelligent discharge switch control circuit A3. The battery pack is used for the battery of an electric vehicle, and switch-on and switch-off for the discharge switch of the electric vehicle by virtue of a mechanical power supply lock are replaced, so that discharge for the lithium battery of the electric vehicle is intelligentized; and the battery pack is used for realizing the functions of control and detection for the lowest discharge voltage, control and detection for the highest charge voltage, balance for cell voltage, detection for temperature and current, etc.

Description

technical field [0001] The invention relates to a lithium-ion electric vehicle battery pack with a special intelligent discharge structure and protection circuit in the field of lithium batteries, in particular to a battery pack with intelligent discharge protection. Background technique [0002] With the development of science and technology, more and more electronic products of various purposes emerge at the historic moment, and the battery side supporting the work of electronic products is the lifeline of electronic products, which is particularly important. At present, the batteries of electric vehicles are generally lead-acid battery packs. Lead-acid batteries are seriously polluted and gradually withdraw from the market. They are replaced by very environmentally friendly lithium-ion battery packs. The general lithium-ion battery pack consists of three parts: lithium-ion cells, The cell protection control circuit and the packaged shell, in which the cell protection cont...

AI Technical Summary

Problems solved by technology

There is a character-shaped plug connected between the battery of a general lithium-ion electric vehicle and the electric vehicle. When the plug is unplugged, the discharge end of the battery still has voltage, and the mechanical power lock on the package shell should be used to control the discharge of the battery pack. Off, when the mechanical power lock is in use, the failure is high, and it cannot protect it, resulting in the abnormal use of the battery and the abnormal use of the electric vehicle.

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