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

Control method for achieving power transfer between stacked rechargeable battery cells and power transfer circuit thereof

a technology of stacked rechargeable battery cells and control methods, which is applied in the direction of battery circuits, transportation and packaging, safety/protection battery circuits, etc., can solve the problems of consuming extra power, defective heat generation circuits of rechargeable battery cells, etc., and achieves the effect of less power consumption, no unnecessary power consumption, and more power

Inactive Publication Date: 2015-08-06
HYCON TECH
View PDF3 Cites 9 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

The present invention provides a power transfer circuit and control method that can efficiently balance rechargeable battery cells without large power consumption. The circuit allows for a higher power rechargeable battery cell to provide power to a lower power rechargeable battery cell, while compensating for the excess power with an inductor. This results in a balanced battery pack that does not excessively consume power.

Problems solved by technology

The known balance circuit for rechargeable battery cells has defects of generating heat and extra consuming power.

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
  • Control method for achieving power transfer between stacked rechargeable battery cells and power transfer circuit thereof
  • Control method for achieving power transfer between stacked rechargeable battery cells and power transfer circuit thereof
  • Control method for achieving power transfer between stacked rechargeable battery cells and power transfer circuit thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0027]The present invention will now be described more specifically with reference to the following embodiment.

[0028]Please refer to FIG. 2 to FIG. 7. FIG. 2 is a block diagram of a power transfer circuit according to the present invention. FIG. 3 illustrates an inductor in the power transfer circuit stores power. FIG. 4 illustrates the inductor in the power transfer circuit releases stored power. FIG. 5 illustrates the power transfer circuit comes back to original state. FIG. 6 is a flow chart of a control method for power transfer according to the present invention. FIG. 7 illustrates several power transfer circuits operate in series.

[0029]A power transfer circuit 20 for achieving power transfer between stacked rechargeable battery cells is composed of an inductor 200, a first switch 301, a second switch 302 and a controller 400. The inductor 200 is connected with a first rechargeable battery cell 501 and a second rechargeable battery cell 502 in parallel, respectively. Two loops ...

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

A control method for achieving power transfer between stacked rechargeable battery cells and a power transfer circuit are disclosed. The power transfer circuit includes an inductor, a first switch, a second switch and a controller. A loop of the rechargeable battery cell having higher power and the inductor is conducted so that the inductor stores power until the current flowing through the inductor meets the cutoff amount. Then, a loop of the rechargeable battery cell having lower power and the inductor is conducted so that the inductor releases the power saved in the inductor to the rechargeable battery cell having lower power until current flowing through the inductor changes direction. Therefore, balance between the rechargeable battery cells can be achieved.

Description

FIELD OF THE INVENTION[0001]The present invention relates to a control method and power transfer circuit. More particularly, the present invention relates to a control method and power transfer circuit for power transfer between stacked rechargeable battery cells.BACKGROUND OF THE INVENTION[0002]Rechargeable batteries are widely used in many products, such as notebooks, tablets, mobile phones, and even large electric vehicles. Generally, rechargeable batteries are composed of a number of rechargeable battery cells linked in series or parallel with the same spec to fulfill a certain power supply. Although every rechargeable battery cell may have the same source, due to very small difference in materials and manufacturing among rechargeable battery cells, it leads to unbalance situation among rechargeable battery cells when they are working (charging or discharging). The unbalance situation of the rechargeable battery cells may further cause low power of the rechargeable battery cells...

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 Applications(United States)
IPC IPC(8): H02J7/00
CPCH02J7/0054H02J7/0014H02J7/0026H02J7/0072H02J7/0016H02J7/342Y02T10/70H02J7/0019
Inventor WANG, CHUAN SHENGCHAO, PO YINLIU, JUI CHIEN
Owner HYCON TECH
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