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Winding lithium paste battery

A slurry battery and wound-type technology, which is applied in the direction of secondary batteries, battery components, circuits, etc., can solve problems such as early failure, uneven distribution of current density of electrode sheets, and insufficient utilization of active materials.

Active Publication Date: 2019-04-23
BEIJING HAWAGA POWER STORAGE TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The current density of the electrode sheet is not uniformly distributed, resulting in insufficient utilization of the active material in the area with a small current density on the electrode sheet, and the active material in the area with a large current density will fail earlier due to higher utilization.

Method used

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Examples

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Embodiment Construction

[0075] The present invention will be further described through embodiments below in conjunction with the accompanying drawings.

[0076] figure 1 It is a three-dimensional schematic diagram of a wound lithium slurry battery according to the present invention, figure 1 (a)-(c) show different shapes of wound lithium paste batteries. exist figure 1 In (a), the cell and the shell 1 of the wound lithium slurry battery are both cylindrical, and the positive pole 2 and the negative pole 4 of the battery protrude from the upper end surface and the lower end surface of the shell 1 respectively. exist figure 1 In (b), the cell and the shell 1 of the wound lithium slurry battery are both hollow cylinders or toruses, and the positive pole 2 and the negative pole 4 of the battery protrude from the upper end surface of the shell 1 respectively. exist figure 1 In (c), the cell and the shell 1 of the wound lithium slurry battery are both elliptical cylinders, and the positive pole 2 and ...

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Abstract

The present invention provides a winding lithium paste battery. The winding lithium paste battery has a battery cell formed by winding of a positive plate and a negative plate, the electrode active conductive material layer of the electrode piece comprises non-bonded and fixed electrode active conductive particles. The winding lithium paste battery further comprises a leakage preventing portion, the leakage preventing portion is arranged at the edge of the positive plate and / or the negative plate or arranged on a housing to prevent the positive pole active conductive particles in the positivepole active conductive material layer from being leaked from the positive plate and / or prevent the negative pole active conductive particles in the negative pole active conductive material layer frombeing leaked from the negative plate. The winding lithium paste battery is more compact in structure, can regulate the shape for the application occasions, and is convenient and flexible in application. Besides, the winding lithium paste battery employs the uniformly distributed multi-tab group or full-tab design to effectively improve the current conduction capacity, improve the current distribution and improve the utilization rate of the electrode active conductive materials.

Description

technical field [0001] The invention relates to the field of lithium slurry batteries, in particular to a wound lithium slurry battery. Background technique [0002] Lithium slurry battery is a new type of lithium battery. The electrode sheet of the lithium slurry battery contains an electrode active conductive material layer, wherein the electrode active conductive material contains a certain proportion of conductive particles suspended or precipitated in the electrolyte. Adhesive and fixed, so it can move locally in the electrolyte to form a dynamic conductive network, which can avoid the problems of battery capacity drop and cycle life decay caused by the falling or loosening of traditional lithium battery electrode materials. [0003] For lithium slurry batteries, a stacked battery structure is traditionally used, which limits the improvement of the battery's energy characteristics and power characteristics. In addition, the tabs of the stacked lithium slurry battery a...

Claims

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Application Information

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IPC IPC(8): H01M10/0587H01M4/80H01M2/18H01M50/533H01M50/586H01M50/59
CPCH01M4/80H01M10/0587H01M50/463Y02E60/10Y02P70/50
Inventor 张晓虎陈永翀何颖源张彬张艳萍张萍
Owner BEIJING HAWAGA POWER STORAGE TECH
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