Solid-state lithium ion battery and charging protection method based on solid-state lithium ion battery
A lithium-ion battery, charging protection technology, applied in secondary battery charging/discharging, secondary battery repair/maintenance, secondary battery, etc.
Active Publication Date: 2021-05-18
SUZHOU QINGTAO NEW ENERGY TECH CO LTD
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Problems solved by technology
[0003] For example, when charging a solid-state lithium-ion battery, it will continue to charge after reaching a full state, resulting in overcharging.
Overcharging may cause the internal pressure of the battery to rise, battery deformation, leakage or even fire, etc., and the performance of the battery will be significantly reduced or damaged
The existing technology is still unable to cut off the power supply when the lithium-ion battery is fully charged or within a preset time period to avoid overcharging.
Method used
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[0060] In order to make the purpose, technical solutions and advantages of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only Some, but not all, embodiments of the invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.
[0061] In describing the present invention, it should be understood that the terms "vertical", "parallel", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal" ", "top", "bottom", "inner", "outer" and other indicated orientations or positional relationships are based on the orientations or positional relationships shown in the drawings, and are ...
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Abstract
The invention discloses a solid-state lithium ion battery and a charging protection method based on the solid-state lithium ion battery. The solid-state lithium ion battery comprises a positive electrode structure, a negative electrode structure and a self-protection structure arranged between the positive electrode structure and the negative electrode structure, the positive electrode structure comprises a positive electrode, the negative electrode structure comprises a negative electrode, and at least one of the positive electrode structure and the negative electrode structure comprises a solid electrolyte layer. When the solid-state lithium ion battery is in a first charging state, the self-protection structure insulates electrons and can convey lithium ions; and when the solid-state lithium ion battery is in a second charging state, the temperature of the solid-state lithium ion battery reaches a first preset temperature threshold value, and the self-protection structure deforms to conduct the positive electrode structure and the negative electrode structure. According to the solid-state lithium ion battery, the self-protection structure is arranged in the solid-state lithium ion battery, so that the interior of the solid-state lithium ion battery is in short circuit when the temperature exceeds the first preset temperature threshold, the use safety of the battery is improved, and the service life of the battery is prolonged.
Description
technical field [0001] The invention relates to the field of new energy technologies, in particular to a solid-state lithium ion battery and a charging protection method based on the solid-state lithium-ion battery. Background technique [0002] Since the 1990s, solid-state lithium-ion batteries have been greatly developed, but battery safety is still one of the factors restricting the further development of lithium-ion batteries. [0003] For example, when a solid-state lithium-ion battery is charged, it will continue to charge after reaching a full state to cause overcharge. Overcharging may lead to increased battery internal pressure, battery deformation, liquid leakage or even fire, and the performance of the battery will be significantly reduced or damaged. The prior art is still unable to cut off the power supply of the lithium-ion battery at the moment when the battery is fully charged or within a preset time period to avoid overcharging. [0004] Therefore, how to ...
Claims
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IPC IPC(8): H01M10/0525H01M10/058H01M10/42H01M10/44
CPCH01M10/0525H01M10/058H01M10/4235H01M10/443Y02P70/50
Inventor 陈凯李峥何泓材冯玉川
Owner SUZHOU QINGTAO NEW ENERGY TECH CO LTD