Novel making process method of lithium ion battery
A lithium-ion battery and manufacturing process technology, applied in electrolyte battery manufacturing, sustainable manufacturing/processing, non-aqueous electrolyte batteries, etc., can solve the problems of battery impact, corrosion appearance, shell expansion, etc., to reduce the dependence on the external environment , reduce cost input and ensure the effect of consistency
A lithium-ion battery and manufacturing process technology, applied in electrolyte battery manufacturing, sustainable manufacturing/processing, non-aqueous electrolyte batteries, etc., can solve the problems of battery impact, corrosion appearance, shell expansion, etc., to reduce the dependence on the external environment , reduce cost input and ensure the effect of consistency
CN107464956AInactive Publication Date: 2017-12-12YUNNAN TIN GROUP HLDG
Image
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0014] Below in conjunction with schematic diagram, the embodiment of the present invention is described in detail:
[0015] Please refer to figure 1 , the manufacturing process of the novel lithium-ion battery in the embodiment of the present invention comprises:
[0016] One-time liquid injection step 10: when the lithium-ion battery is liquid-filled, inject the preset ratio of the total weight of the electrolyte. For a liquid injection step 10, the total weight of the electrolyte is a predetermined weight of the electrolyte required to meet the performance of the battery cell. The battery performance includes capacity, cycle and rate performance, etc., and the preset ratio is 70%- 100%, the ambient humidity of this step is 1% to 2%, and the temperature is 20-25°C. In the first example of the present invention, the injected electrolyte can meet the performance requirements of the battery, and the battery does not need secondary liquid injection, that is, the three steps fr...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More PUM
Login to View More Abstract
The invention provides a novel making process method of a lithium ion battery and relates to making of a square lithium ion power battery and an energy storage battery, in particular to a static activation after lithium ion liquid injection-formation-high-temperature aging-secondary liquid injection-formation-sealing process. The novel making process method comprises the following steps: the static step after liquid injection: after battery liquid injection, plugging a liquid injection hole by using a special plug and then storing; the formation step: piercing the plug with a needle, connecting the other end of the needle and a pipeline on formation equipment and pre-charging or charging and discharging the battery in vacuum; the aging step: discharging gas generated inside the battery in manners of piercing the plug with the needle and vacuum pumping; the secondary liquid injection step: supplementing liquid in a manner of piercing the plug with the needle; the secondary formation step: piercing the plug with the needle, connecting the other end of the needle and the pipeline on the formation equipment and charging the battery in the vacuum-pumping process; the sealing step: piercing the sealed plug, pressing the plug under the situation of negative pressure extrusion and then performing laser sealing.
Description
technical field [0001] The invention relates to the field of square lithium ion power and the field of square lithium ion energy storage, and in particular to the process of static activation-formation-high temperature aging-secondary liquid injection-formation-sealing after lithium ion injection. Background technique [0002] Lithium-ion batteries have the characteristics of high voltage, high specific capacity, high specific power, and long life. They have become important new energy sources and are widely used in the fields of power batteries and energy storage batteries. Under certain humidity conditions, how to prevent water absorption as much as possible, and minimize environmental modification and humidity control costs has become a bottleneck for many manufacturers; at the same time, how to improve product consistency has become a common research topic for the entire industry. [0003] At present, in the industry, major manufacturers use sealing tape or adhesive tape...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More Application Information
Patent Timeline
12 Dec 2017
Publication
CN107464956A
- IPC
- H01M10/058
- CPC
- H01M10/058; Y02E60/10; Y02P70/50
- Inventors
- 李胜前; 朱冠华