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

Battery charging method, device and device

A battery charging and battery technology, applied in battery circuit devices, secondary battery charging/discharging, circuit devices, etc., can solve problems such as shortening battery life, battery overcharging, and charging efficiency reduction, so as to optimize service life and avoid The risk of overcharging and the effect of improving charging efficiency

Active Publication Date: 2019-08-09
CONTEMPORARY AMPEREX TECH CO
View PDF6 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] During the cycle of power lithium-ion batteries, the DC internal resistance will gradually increase. However, in the existing battery charging technology of charging piles, the same charging process is adopted for batteries that have undergone different charging cycles, that is, Stop charging when the rechargeable battery reaches the artificially set cut-off voltage, which will cause the battery to overcharge and reduce the charging efficiency, shortening the service life of the battery

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
  • Battery charging method, device and device
  • Battery charging method, device and device
  • Battery charging method, device and device

Examples

Experimental program
Comparison scheme
Effect test

specific Embodiment

[0119] Before the start of the selected battery charge and discharge cycle, set the DCR growth thresholds during the battery charge and discharge cycle to 10%, 20%, 30%, 40% and 50%, respectively, and monitor the initial value of the battery internal resistance DCR 0 =1.00mohm, and the maximum charge cut-off voltage of the battery is 4.250V.

[0120] Set the initial charging current value {80.0A, 60.0A, 40.0A, 20.0A, 10.0A} during the charging process of a group of batteries, and calculate the charging current value corresponding to each stage through the above formula (1). Charge cut-off voltage {4.170V, 4.190V, 4.210V, 4.230V, 4.240V}.

[0121] Figure 5 A schematic diagram of a charging curve at an initial charging current value in a battery charging method according to another embodiment of the present invention is shown.

[0122] Such as Figure 5 As shown, in the initial stage of the battery charge and discharge cycle, the battery is charged with the set initial charg...

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 battery charging method, apparatus and equipment. The charging method comprises the steps of setting a charging current value I<n> and determining a charging cut-off voltage value V<n> corresponding to I<n>; when the battery internal resistance growth rate reaches an internal resistance growth rate threshold value and is less than the maximum value of the internal resistance growth rate threshold value in battery circulation, correcting I<n-1> and corresponding V<n-1> according to monitored battery capacity retention ratio and battery internal resistance; in the (n-1) charging stage, charging the battery by I<n-1>, when the charging voltage of the battery reaches V<n-1> and when (n-1) is smaller than the set total number of charging stages, entering the n charging stage, and when the charging voltage of the battery reaches V<n-1> and when (n-1) is equal to the set total number of charging stages, stopping charging; and when the battery internal resistance growth rate is greater than or equal to the maximum value of the internal resistance growth rate threshold value, stopping the charge-discharge circulation of the battery. By virtue of the battery charging method provided by the embodiments, battery overcharging can be prevented, and the service life of the battery can be prolonged.

Description

technical field [0001] The invention belongs to the field of battery technology, and in particular relates to a battery charging method, device and equipment. Background technique [0002] In recent years, clean and environmentally friendly new energy vehicles have attracted the attention and welcome of the market. Among them, power batteries have become the heart of new energy vehicles. With the upgrading of user experience and market competition, how to charge batteries efficiently, safely and with a long life has become a consumer issue. one of the key concerns of the researchers. [0003] During the cycle of power lithium-ion batteries, the DC internal resistance will gradually increase. However, in the existing battery charging technology of charging piles, the same charging process is adopted for batteries that have undergone different charging cycles, that is, Stop charging when the rechargeable battery reaches the artificially set cut-off voltage, which will cause o...

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
Patent Type & Authority Patents(China)
IPC IPC(8): H01M10/44H02J7/00G07F15/00
CPCG07F15/005H01M10/44H01M10/441H02J7/0071Y02E60/10Y02T90/12
Inventor 付欣骆福平王升威杜鑫鑫
Owner CONTEMPORARY AMPEREX TECH CO
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com