Battery monitoring device and control system

Abstract

The invention provides a battery monitoring device and a control system. The battery monitoring device comprises: a master control board and a power board. The master control board is used for transmitting unit output voltage and unit cell temperature to a vehicle controller; if a charging protection control command returned by the vehicle controller is received, a charging protection control signal is generated according to the charging protection control command; if a discharging protection control command returned by the vehicle control is received, a discharging protection control signal is generated according to the discharging protection control command; the power board is used for disconnecting a first MOS (metal oxide semiconductor) device when a gate of the first MOS device receives the charging protection control signal, and disconnecting a second MOS device when a gate of the second MOS device receives a discharging protection control signal. The problem of the prior art issolved that it is inconvenient for a user to use since both a charging process and discharging process of a lithium battery are disconnected after a protection circuit board switch is opened; the battery monitoring device and the control system ensures charging and discharging safety for a battery pack and are convenient for a user to use.

Description

technical field [0001] The invention relates to the technical field of battery monitoring, in particular to a battery monitoring device and a control system. Background technique [0002] Lithium is located at the third place on the periodic table of elements. Because the number of electrons in the outer shell is 1, it is easy to lose to form a stable structure, so lithium is a very active metal. Lithium-ion batteries made of lithium elements have the advantages of large discharge current, low internal resistance, long life and no memory effect, and are now widely used. However, lithium-ion batteries are strictly prohibited from overcharging, over-discharging and over-current during use, otherwise it will cause accidents such as shortened battery life, fire or explosion, so rechargeable lithium-ion batteries will be connected to a protective circuit board to protect the safety of the battery cell . [0003] The existing protection circuit board is just a simple switch, and...

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Problems solved by technology

[0004] In view of this, the object of the present invention is to provide a battery monitoring device and a control system to alleviate the problems existing in the prior art due to the disconnection of the charging process and the discharging process of the lithium battery after the protection circuit board switch is disconnected. User-friendly technical issues

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