Battery system

Abstract

The invention provides a battery system, and belongs to the technical field of batteries. The battery system comprises a case, a plurality of sections of battery cells, a temperature collecting probe, a BMS (battery management system), a heating and refrigeration assembly, a liquid flowing pipeline, a heat conduction medium and a water pump, wherein the liquid flowing pipeline passes through a gap formed among the plurality of sections of battery cells; the water pump drives the heat conduction medium to realize circulation flowing inside the pipeline; the temperature collecting probe and the heating and refrigeration assembly are electrically connected with the BMS; the BMS controls the heating and refrigeration assembly to work according to the temperature information feedback by the temperature collecting probe; the heating and refrigeration assembly and the liquid flowing pipeline perform heat exchange through a water cooling head so as to realize the heating and the refrigeration on the heat conduction media inside the liquid flowing pipeline; the whole temperature control system is directly controlled by the BMS. The battery system is provided with the temperature collecting probe, the heating and refrigeration assembly and the BMS; the environment temperature of the battery cells is regulated through controlling the temperature of the heat conduction media inside the liquid flowing pipeline, so that the battery cells always work in a set temperature range.

Description

technical field [0001] The invention relates to the technical field of batteries, in particular to a battery system. Background technique [0002] In recent years, lithium batteries have gradually entered the electric bicycle market, making the travel of electric bicycles more convenient and environmentally friendly. Generally speaking, lithium batteries for electric bicycles are composed of the following parts: batteries (cells are divided into many types according to packaging, mainly Soft package, hard shell, 18650 steel shell), BMS circuit control system, internal connecting wires, battery pack shell, the battery pack has short-circuit protection, over-current protection, over-voltage protection, under-voltage protection, low-temperature protection, temperature over-limit protection, Compared with lead-acid batteries, it is safer to have multiple protections, because lithium batteries have inherent advantages of very high energy density. Compared with lead-acid batteries...

AI Technical Summary

Problems solved by technology

[0009] The purpose of the present invention is to provide a battery system to solve the poor heat dissipation performance of electric bicycle batteries in the prior art, and the charging at high temperature is prone to danger; at low temperature, charging cannot be realized, and it cannot be used in some areas demand; moreover, the disadvantage of high cost of use

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