Lithium battery laminated protection plate, power battery pack and electric vehicle

Abstract

The invention provides a lithium battery lamination protection plate, which is used for connecting a lithium battery, and comprises an acquisition communication plate and a power switch plate, and the acquisition communication plate and the power switch plate are laminated in the vertical direction and are electrically connected through a plug connector; an analog front-end chip and a control module are arranged on the acquisition communication board, and a power switch group is arranged on the power switch board; the analog front-end chip is used for collecting parameter information of the lithium battery, and the control module is used for transmitting the parameter information to the cloud server; the analog front-end chip is further used for sending a control signal to the power switch group according to the parameter information, and the power switch group is used for being switched on or switched off according to the control signal so as to achieve charging and discharging control over the lithium battery. The invention also provides a power battery pack and an electric vehicle. According to the lithium battery laminated protection plate, the power battery pack and the electric vehicle provided by the invention, the occupied space of the protection plate in the length and width directions is reduced, the design difficulty is reduced, and the production cost is reduced.

Description

【Technical field】 [0001] The invention relates to the technical field of lithium batteries, in particular to a lithium battery laminate protection plate, a power battery pack and an electric vehicle. 【Background technique】 [0002] When used as a power device for an electric vehicle, a lithium battery is usually connected with a protection board for monitoring battery information for charge and discharge protection, and can upload battery parameter information (voltage, current, temperature, location, etc.) to the cloud server platform for Realize intelligent monitoring of lithium batteries. In the existing protection board design scheme, the sampling chip with the front-end sampling function, the switch group for charging and discharging control, and the control module for external communication are usually integrated on the same four-layer circuit board, resulting in the circuit board being different in length and width. It takes up a lot of space in the direction, and th...

AI Technical Summary

Problems solved by technology

In the existing protection board design scheme, the sampling chip with the front-end sampling function, the switch group for charging and discharging control, and the control module for external communication are usually integrated on the same four-layer circuit board, resulting in the circuit board being different in length and width. It takes up a lot of space in the direction, the design is difficult and the production cost is high

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