Dendrite accumulation-free lithium cathode battery and operation method thereof

An operation method and lithium negative electrode technology, applied in the field of lithium-ion deintercalation batteries, can solve problems such as the inability to eliminate dendrites, and achieve the effects of eliminating dendrites, battery safety, and long-term circulation

Inactive Publication Date: 2017-05-10
胡小华
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] This is the generalization of all methods at home and abroad, but all can only inhibit the growth rate and density of dendrites, and cannot eliminate dendrites. Therefore, lithium negative secondary batteries have not been used in secondary batteries (rechargeable batteries) so far. use

Method used

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  • Dendrite accumulation-free lithium cathode battery and operation method thereof
  • Dendrite accumulation-free lithium cathode battery and operation method thereof

Examples

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Embodiment

[0029] Embodiment: A lithium negative electrode battery without dendrite accumulation, including a battery belt and a battery shaft, the battery belt is composed of a separator belt, a positive electrode belt, a separator belt and a lithium negative electrode belt in the above order, and the electrolyte is evenly distributed In the diaphragm belt, such as figure 1 and figure 2 As shown, there are two battery shafts 1 corresponding to the two ends of the battery belt, each of the two battery shafts is connected to a motor 8, and there is a gap between the battery shaft and the output shaft of the corresponding motor. Connected by an electromagnetic clutch 9, the two ends of the battery belt are respectively connected to the corresponding battery shaft and can be wound into a battery roll 2 with charging and discharging functions under the rotation of the battery shaft. A roller 3 is provided at the battery belt, the roller is located above the battery shaft, and the roller se...

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Abstract

The invention discloses a dendrite accumulation-free lithium cathode battery and an operation method thereof. An enclosed batter shell comprises a battery tape, two battery shafts, a roller and a dendrite removing apparatus, when the dendrite is removed, one battery shaft provides power to coil a battery coil, the other battery shaft provides resistance, the battery tape is tightened, at the same time, is converted from one battery to the other battery through axial direction, during the process, the battery tape is separated to an upper battery tape and a lower battery lithium cathode tape with synchronous motion by the roller when close to the other battery shaft, the dendrite removing apparatus performing dendrite removing on the lower lithium cathode tape, the upper battery tape and the lower lithium cathode tape after the dendrite is removed are superposed to the battery tape when close to the battery shaft, and reeled onto the battery shaft to form a battery coil. The dendrite accumulation-free lithium cathode battery can remove the dendrite to realize the cycle usage of the lithium cathode battery, so that short circuit due to dendrite and the heating combustion phenomenon of the lithium battery due to short circuit can be effectively avoided.

Description

technical field [0001] The invention belongs to the technical field of lithium ion deintercalation batteries, in particular to a lithium negative electrode battery without dendrite accumulation. Background technique [0002] The battery with lithium metal as the negative electrode has 10 times the mass specific energy than the carbon negative electrode battery. However, each time the lithium negative electrode is charged, it will produce lithium metal thorns below the micron. This metal thorn is called "dendrite" in the industry. After more than a dozen cycles of work, due to the accumulation of dendrites, it cannot work normally. This is a technical problem. [0003] The current international solution to this technical problem is: [0004] 1. Find a stable SEI film by changing the electrolyte formula (when the battery is working, a layer of solid electrolyte is grown on the surface of the negative electrode called SEI film). [0005] 2. Find a lithium electrode with stab...

Claims

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Application Information

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IPC IPC(8): H01M10/0587H01M10/54
CPCH01M10/0587H01M10/54Y02E60/10Y02W30/84Y02P70/50
Inventor 胡小华
Owner 胡小华
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