Unlock instant, AI-driven research and patent intelligence for your innovation.

Method and system for preventing lithium secondary battery from passivation

A lithium sub-battery and power system technology, applied in the field of electronic information, can solve problems such as increasing system costs, and achieve the effect of alleviating or avoiding the formation of passivation film

Inactive Publication Date: 2011-06-15
上海复展智能科技股份有限公司
View PDF2 Cites 11 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In this solution, a super farad capacitor needs to be connected in parallel, which increases the cost of the system

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
  • Method and system for preventing lithium secondary battery from passivation
  • Method and system for preventing lithium secondary battery from passivation
  • Method and system for preventing lithium secondary battery from passivation

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] see figure 2 , the invention discloses a method for preventing the passivation of the lithium sub-battery. The lithium sub-battery is allowed to work for a period of time through the control circuit, and the lithium sub-battery will continue to discharge when it is working to achieve the effect of activating the lithium sub-battery. , to alleviate or avoid the generation of passivation film.

[0031] The lithium sub-battery is used as the second power source to supply power to the power consumption system, and the power consumption system may be a water meter, a gas meter or an electric meter. The power supply for the power system also includes a first power supply; the lithium sub-battery is used as a backup to supply power for the power system when the first power supply is inoperative; the control circuit controls the first power supply or the second power supply to Powered by the electrical system.

[0032] The method further includes the step of judging whether ...

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 discloses a method and system for preventing a lithium secondary battery from passivation. The lithium secondary battery is controlled to operate for a period of time every time slot by a control circuit, wherein the lithium secondary battery can continuously discharge when in operation, thus the lithium secondary battery is activated and a passivation membrane can be prevented or avoided from being generated; the lithium secondary battery is taken as a secondary power supply for supplying power to a power system, and a primary power supply also supplies power to the power system; the lithium secondary battery is for spare use and supplies power to the power system when the primary power supply does not work; and the control circuit controls the primary power supply or the secondary power supply to supply power to the power system. By applying the method and the system for preventing the lithium secondary battery from passivation, provided by the invention, the passivation membrane can be prevented or avoided from being generated by discharging the lithium secondary battery regularly, thus the phenomenon that discharging cannot be carried out can be avoided.

Description

technical field [0001] The invention belongs to the technical field of electronic information, and relates to a method for preventing passivation of a battery, in particular to a method for preventing passivation of a lithium sub-battery; in addition, the invention further relates to a system for preventing the passivation of a lithium sub-battery. Background technique [0002] Lithium sub-battery is used as the mainstream power supply of modern smart meters (mainly referring to smart water, electricity, gas and heat meters). Lithium-ion batteries have unique advantages that other chemical power sources do not have; such as high and stable operating voltage; wide temperature range; high energy density; long shelf life; no pollution. However, lithium thionyl chloride batteries have the disadvantage of voltage hysteresis. [0003] The reason for affecting the voltage hysteresis is that a dense lithium chloride film is formed on the surface of the positive electrode after meta...

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): H01M10/42
CPCY02E60/12Y02E60/10
Inventor 刘荣鑫顾晓升
Owner 上海复展智能科技股份有限公司