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

Rechargeable battery charging method and battery pack

一种二次电池、充电方法的技术，应用在二次电池充电/放电、二次电池、二次电池维修/保养等方向，能够解决不能抑制二次电池劣化等问题

Inactive Publication Date: 2012-03-21
SANYO ELECTRIC CO LTD
View PDF5 Cites 11 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Furthermore, the technology disclosed in Patent Document 3 aims at correcting the learned capacity accurately, and cannot suppress the progress of deterioration of the secondary 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
  • Rechargeable battery charging method and battery pack
  • Rechargeable battery charging method and battery pack
  • Rechargeable battery charging method and battery pack

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0052] Hereinafter, the present invention will be described in detail based on the drawings showing embodiments of the present invention.

[0053] figure 1 It is a block diagram showing a configuration example of the battery pack according to the embodiment of the present invention. 10 in the drawing is a battery pack, and the battery pack 10 is detachably mounted on a load device 20 such as a personal computer (PC) and a portable terminal. The battery pack 10 includes a battery 1 in which battery blocks B11 , B12 , and B13 are connected in series in this order, wherein the battery blocks are battery cells 111 , 112 , 113 , 121 , 122 , 123 , 131 , Every three battery cells in 132 and 133 are connected in parallel in sequence. In the battery 1, the positive electrode of the battery block B13 and the negative electrode of the battery block B11 serve as a positive electrode terminal and a negative electrode terminal, respectively.

[0054] The voltages of the battery blocks B1...

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 rechargeable battery charging method and a battery pack. One cycle is corrected every charging / discharging cycle in accordance with a cycle deterioration accelerating coefficient. The corrected one cycles are accumulated. A storage period is corrected in accordance with a storage deterioration accelerating coefficient every hour. The corrected storage periods are accumulated. A deterioration coefficient is obtained as the product of a cycle deterioration coefficient calculated in accordance with the accumulated cycle number, and a storage deterioration coefficient calculated in accordance with the accumulated value of the storage periods (Step S42). If the deterioration coefficients falls within the range 0.3 to 0.7 (Step S43, 44: NO), the setting voltage in constant-voltage and constant-current charging operation is decreased from 4.2 to 4.1 V (S45). If it is smaller than 0.3 (S43: NO, S44: YES), the setting voltage is decreased to 3.8 V (S46).Thus, the deterioration can be suppressed since the deterioration changes with reduction of set voltage and set current.

Description

technical field [0001] The present invention relates to a secondary battery charging method for charging the secondary battery with constant current / constant voltage and a battery pack for charging the secondary battery using the charging method. Background technique [0002] In the charging process of secondary batteries represented by lithium-ion batteries, the so-called constant current / constant voltage charging method is mostly used, that is, the upper limit of the terminal voltage is limited to the set voltage, and the constant current is charged at the set current. After the voltage rises to the set voltage, it is charged with constant voltage charging. A method of stepwise lowering the charging voltage or charging current may also be employed before becoming constant-voltage charging. On the other hand, when the secondary battery is repeatedly charged and discharged in use and left (including storage) after charging, deterioration progresses, and the capacity (FCC: F...

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(China)
IPC IPC(8): H01M10/44
CPCH01M10/0525H01M10/441H01M10/443H02J7/0075Y02E60/12H01M10/486H02J7/0069Y02E60/10
Inventor 小林崇朗西川透
Owner SANYO ELECTRIC CO LTD