Battery pack control circuit and battery pack control system

Abstract

The invention belongs to the technical field of power battery control and particularly relates to a battery pack control circuit and a battery pack control system. The battery pack control circuit comprises a connector which is connected with a battery management system and used for transmitting a charge / discharge control signal to the battery management system and transmitting a switching controlsignal to a control switching circuit, a battery management system which is powered by a battery pack and is used for controlling the on-off of the switching circuit, a control switching circuit is used for realizing control switching of the switching circuit according to the switching control signal, and a switching circuit used for controlling on-off of charging and discharging of the battery pack. The battery pack control circuit is advantaged in that a problem that a forklift loses power suddenly due to the fact that power supply of an electric management system is influenced by externalpower supply faults can be prevented, and stable power supply of the battery pack in the forklift operation process is ensured.

Description

technical field [0001] The invention belongs to the technical field of power battery control, and in particular relates to a battery pack control circuit and a battery pack control system. Background technique [0002] In recent years, battery power systems have been widely used in industries, transportation, shopping malls, banks, public security and smart residential quarters, and are an important part of modern power systems. [0003] Generally speaking, the power battery system consists of the following parts: battery pack, BMS (abbreviation for BATTERY MANAGEMENT SYSTEM), electrical circuit; some systems also include heating and cooling devices. Usually, the power battery system must have a complete charge and discharge control circuit. Once an abnormal situation occurs at the alarm point, the power battery system BMS can automatically cut off the circuit and store the alarm record. [0004] However, in the existing power battery control system, an external power suppl...

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Problems solved by technology

[0005] The purpose of the embodiment of the present invention is to provide a battery pack control circuit, aiming at solving the problem that in the existing power battery control system, an external power supply is generally used to supply power to the power battery control system. In this case, the external power supply fails, It may lead to the interruption of the power supply of the battery pack, causing the forklift to suddenly lose power, causing serious consequences

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