Apparatus and method for discharging lithium-ion batteries
A lithium-ion battery and battery technology, applied in battery circuit devices, current collectors, electric vehicles, etc., can solve problems such as explosions and fires
Active Publication Date: 2021-02-12
深圳深汕特别合作区乾泰技术有限公司 +2
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Problems solved by technology
The lithium-ion battery is an energy storage device, and there will still be a certain amount of electricity after it is scrapped, and the lithium ion (or lithium metal) is very active, and it will react violently when it meets water or air. If it is disassembled improperly, it will easily cause positive and negative electrodes Short circuit may cause explosion, fire and other safety accidents
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[0035] In order to facilitate the understanding of the present invention, the present invention will be described more fully below with reference to the associated drawings. Preferred embodiments of the invention are shown in the accompanying drawings. However, the present invention can be embodied in many different forms and is not limited to the embodiments described herein. On the contrary, these embodiments are provided to make the understanding of the disclosure of the present invention more thorough and comprehensive.
[0036] Unless otherwise defined, all technical and scientific terms used herein belong to the embodiment of one skilled in the technical field of the invention and are not intended to limit the invention. As used herein, "and / or" includes any and all combinations of one or more of the associated listed items.
[0037] At present, the safe discharge of waste lithium-ion batteries in the industry mainly adopts two methods: one is physical discharge, such ...
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The invention relates to a lithium ion battery discharge device and method. The method includes: monitoring the open-circuit voltage of the battery to be discharged, performing a first-stage discharge on the battery to be discharged, performing a second-stage discharge on the battery to be discharged, and performing a third-stage discharge on the battery to be discharged. By discharging with a smaller current when the battery is at a high potential (the open circuit voltage is greater than or equal to the first preset value), and at a low potential (the open circuit voltage is between the first preset value and the second preset value), the battery is discharged with a larger current Current discharge, "over discharge" (open circuit voltage is less than or equal to the second preset value) and discharge with a smaller current, can ensure the safety of the operation, and ensure that the battery can be completely discharged, achieving the purpose of stabilization before regeneration .
Description
technical field [0001] The invention relates to the field of lithium ion battery recycling, in particular to a lithium ion battery discharge device and method. Background technique [0002] Lithium-ion batteries are widely used in many fields, especially mobile phones and electronics industries, due to their outstanding characteristics such as high working voltage, large energy, and small self-discharge. With the continuous development of lithium-ion battery applications, the automotive industry is gradually using lithium-ion batteries as its power source to provide power. However, lithium-ion batteries have a certain life cycle, and once they reach their life cycle, they will face scrapping and decommissioning. [0003] With the widespread application of lithium-ion batteries in my country, especially the rapid development of new energy vehicles, a large number of used lithium-ion batteries will be decommissioned in the future. Regardless of whether these decommissioned l...
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IPC IPC(8): H02J7/00
CPCH02J2007/0067H02J7/0063
Inventor 张志文邹康迪杨永海
Owner 深圳深汕特别合作区乾泰技术有限公司