Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

A method of activating a lithium ion battery

A lithium-ion battery and battery technology, applied in secondary batteries, secondary battery charging/discharging, secondary battery repair/maintenance, etc., can solve problems such as battery safety out of control, functional failure of battery packs, etc., and achieve consistency High, restore battery capacity, reduce the effect of internal resistance

Inactive Publication Date: 2019-01-15
青岛恒金源电子科技有限公司
View PDF4 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For high-power power sources, several single cells are usually connected in series or in parallel to form a battery pack to work together, and the functional failure of any single cell in the battery pack will lead to the functional failure of the entire battery pack, or even Cause battery safety out of control and other issues

Method used

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
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • A method of activating a lithium ion battery

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] The operation method of the battery pack, which includes the following screening and activation steps, and continues the power supply work of the battery pack after the activation step:

[0028] 1) Charge the lithium-ion battery in the battery pack to 3.6V at 0.05C;

[0029] 2) Charge to 4.2V at 0.1C;

[0030] 3) Discharge at 1C to 2.7V;

[0031] 4) Measure the temperature of each single battery and calculate the average temperature;

[0032] 5) Take the battery whose temperature is higher than the average value as the battery to be activated, and continue to over-discharge to the over-discharge cut-off voltage:

[0033] Over-discharge cut-off voltage=2.7-0.1*(single battery temperature / average temperature-1);

[0034] 6) Perform positive and negative alternating pulse current cycles on the battery to be activated for 3 times near its voltage, the magnitude of the positive pulse current and the negative pulse current are the same as 0.1C, the pulse action time is the...

Embodiment 2

[0036] The operation method of the battery pack, which includes the following screening and activation steps, and continues the power supply work of the battery pack after the activation step:

[0037] 1) Charge the lithium-ion battery in the battery pack to 3.7V at 0.1C;

[0038] 2) Charge to 4.3V at 0.5C;

[0039] 3) Discharge at 2C to 2.8V;

[0040] 4) Measure the temperature of each single battery and calculate the average temperature;

[0041] 5) Take the battery whose temperature is higher than the average value as the battery to be activated, and continue to over-discharge to the over-discharge cut-off voltage:

[0042] Over-discharge cut-off voltage=2.8-0.8*(single battery temperature / average temperature-1);

[0043] 6) Perform positive and negative alternating pulse current cycles on the battery to be activated for 20 times near its voltage. The magnitude of the positive pulse current and the negative pulse current are the same as 0.2C, and the pulse action time is...

Embodiment 3

[0045] The operation method of the battery pack, which includes the following screening and activation steps, and continues the power supply work of the battery pack after the activation step:

[0046] 1) Charge the lithium-ion battery in the battery pack to 3.6V at 0.08C;

[0047] 2) Charge to 4.2V at 0.2C;

[0048] 3) Discharge at 1.5C to 2.7V;

[0049] 4) Measure the temperature of each single battery and calculate the average temperature;

[0050] 5) Take the battery whose temperature is higher than the average value as the battery to be activated, and continue to over-discharge to the over-discharge cut-off voltage, and the cut-off voltage satisfies the following formula:

[0051] Over-discharge cut-off voltage=2.7-0.5*(single battery temperature / average temperature-1);

[0052] 6) The battery to be activated is subjected to positive and negative alternating pulse current cycles 10 times near its voltage. The magnitude of the positive pulse current and the negative pul...

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

No PUM Login to View More

Abstract

The invention provides a method for activating a lithium ion battery. By overdischarging the lithium ion battery below a conventional discharge cut-off voltage, the electrode material is activated, the internal resistance of the battery is reduced, the polarization of the electrode is eliminated, and the partial charge-discharge capacity of the battery is restored. The method of the invention canactivate the battery whose capacity decreases, restore the capacity of the activated battery to the original capacity, and prolong the cycle life of the battery.

Description

technical field [0001] The invention relates to the technical field of batteries, in particular to a method for activating lithium ion batteries. Background technique [0002] With the rapid development of lithium-ion battery technology, lithium-ion batteries have also begun to be widely used as power and energy storage power sources. For high-power power sources, several single cells are usually connected in series or in parallel to form a battery pack to work together, and the functional failure of any single cell in the battery pack will lead to the functional failure of the entire battery pack, or even Cause battery safety out of control and other issues. Therefore, the batteries in the battery pack need to be regularly maintained and activated to avoid functional failure of the batteries. Contents of the invention [0003] The invention provides a method for activating a lithium-ion battery. By over-discharging the lithium-ion battery below the conventional discharg...

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
no application Login to View More
IPC IPC(8): H01M10/42H01M10/44H01M10/0525
CPCH01M10/0525H01M10/42H01M10/448Y02E60/10
Inventor 不公告发明人
Owner 青岛恒金源电子科技有限公司
Features
  • Generate Ideas
  • Intellectual Property
  • Life Sciences
  • Materials
  • Tech Scout
Why Patsnap Eureka
  • Unparalleled Data Quality
  • Higher Quality Content
  • 60% Fewer Hallucinations
Social media
Patsnap Eureka Blog
Learn More

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2025 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com