Voltage-adjustable lithium battery

Abstract

The invention discloses a voltage-adjustable lithium battery, comprising a battery body, partition plates and a cover body, wherein the inside of the battery body is a cavity structure which forms an electrolyte space, and the upper part of the electrolyte space is an open face; a retaining collar is arranged inside the battery body, extends along the inner wall of the battery body and also extends inwards to form a supporting face, a guide groove is formed in the side edge of the retaining ring, and at least two limiting grooves are formed in the guide groove; at least two partition plates are arranged and are inserted in the electrolyte space to divide the electrolyte space into at least two separate electrolyte spaces; the partition plates are embedded in the guide groove and slide freely along the guide groove; moreover, the partition plates are stuck in the limiting grooves for limiting and fixing; the cover plate covers the upper part of the battery body so as to seal the electrolyte space. The voltage-adjustable lithium battery is simple in structure, convenient and rapid to disassemble and assemble; due to arrangement of a plurality of partition plates, a multi-separate-lithium-battery combined structure is formed and circuit connection is stable.

Description

technical field [0001] The invention relates to the field of lithium batteries, in particular to a lithium battery with adjustable voltage. Background technique [0002] With the development of science and technology, lithium batteries have become the mainstream now. It mainly relies on lithium ions to move between the positive and negative electrodes to work. During the charging and discharging process, Li+ intercalates and deintercalates back and forth between the two electrodes: when charging, Li+ is deintercalated from the positive electrode, intercalated into the negative electrode through the electrolyte, and the negative electrode is in a lithium-rich state; the opposite is true during discharge. Batteries generally use materials containing lithium elements as electrodes, which are representatives of modern high-performance batteries. With the development of lithium batteries, in order to meet the requirements of higher voltage, it is necessary to connect multiple li...

AI Technical Summary

Problems solved by technology

Batteries generally use materials containing lithium elements as electrodes, which are representatives of modern high-performance batteries. With the development of lithium batteries, in order to meet the requirements of higher voltage, it is necessary to connect multiple lithium batteries in series to form a lithium battery with adjustable voltage. For example, the battery of an electric vehicle is composed of multiple individual lithium batteries connected in series to form a lithium battery pack for power supply. The mileage and maximum speed of an electric vehicle are closely related to the capacity of the battery pack. In actual assembly, multiple lithium batteries are generally stacked in the compartment Internally, the batteries are connected in series through the external wires. In this series connection, when the vehicle is running, vibration and bumps will cause the external wires to loosen and the circuit connection will be unstable. In addition, the wire sheath will be worn out and cause a short circuit.

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