High-power discharge lithium ion battery cell with protection structure

Abstract

The invention discloses a high-power discharge lithium ion battery cell with a protection structure, which comprises a lithium ion battery cell main body, a mounting fixing sleeve is mounted on the lithium ion battery cell main body, sixteen connecting blocks are symmetrically arranged on the outer wall of the mounting fixing sleeve, eight side protection plates are symmetrically mounted on the outer side of the mounting fixing sleeve, two mounting guide rods are symmetrically arranged in each of the eight side edge protection plates, each of the sixteen mounting guide rods is provided with a return spring, and a sliding structure is mounted on each of the sixteen mounting guide rods. The high-power discharge lithium ion battery cell with a protection structure belongs to the field of lithium ion battery cells, the lithium ion battery cell main body can be conveniently protected by arranging the side protection plate, the return springs, the sliding structure, the support rod and the mounting fixing sleeve which are matched with one another; and by arranging a first protection soft plate and a second protection soft plate, the lithium ion battery cell main body can be prevented from being crushed by the sliding structure.

Description

technical field [0001] The invention relates to the field of lithium-ion batteries, in particular to a high-power discharge lithium-ion battery with a protective structure. Background technique [0002] Lithium-ion battery is a kind of secondary battery, it mainly relies on the movement of lithium ions between the positive electrode and the negative electrode to work. The positive electrode is deintercalated, and the negative electrode is embedded in the negative electrode through the electrolyte, and the negative electrode is in a lithium-rich state; the opposite is true when discharging, and the battery cell generally uses a material containing lithium as the electrode, which is a representative of modern high-performance batteries. Its components include positive electrodes: the active material is generally Lithium manganese oxide or lithium cobalt oxide, nickel-cobalt lithium manganese oxide materials, electric bicycles generally use nickel-cobalt lithium manganese oxide...

AI Technical Summary

Problems solved by technology

[0002] Lithium-ion battery is a kind of secondary battery, it mainly relies on the movement of lithium ions between the positive electrode and the negative electrode to work. The positive electrode is deintercalated, and the negative electrode is embedded in the negative electrode through the electrolyte, and the negative electrode is in a lithium-rich state; the opposite is true when discharging, and the battery cell generally uses a material containing lithium as the electrode, which is a representative of modern high-performance batteries. Its components include positive electrodes: the active material is generally Lithium manganese oxide or lithium cobalt oxide, nickel-cobalt lithium manganese oxide materials, electric bicycles generally use nickel-cobalt lithium manganese oxide or ternary + a small amount of lithium manganate, pure lithium manganate and lithium iron phosphate are due to their large size and poor performance Good or high cost and gradually fade out. Diaphragm: A specially formed polymer film with a microporous structure that allows lithium ions to pass through freely, but electrons cannot pass through. Negative electrode: The active material is graphite, or carbon similar to graphite structure , the conductive current collector uses electrolytic copper foil with a thickness of 7-15 microns, organic electrolyte: carbonate solvent dissolved in lithium hexafluorophosphate, polymer gel electrolyte, shell: divided into steel shell, aluminum shell, plated Nickel-iron shell, aluminum-plastic film, etc.; the existing high-power discharge lithium-ion batteries have poor protection performance. When the high-power discharge lithium-ion batteries are collided, they will be easily damaged, which in turn will reduce the high-power discharge lithium-ion batteries. service life, improve the user's use cost

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