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

Circuit for balance-charging serial storage cells and method for balance-charging serial storage cells

一种蓄电单元、充电电路的技术，应用在电荷均衡电路、二次电池充电/放电、电池电路装置等方向，能够解决寿命变短等问题

Active Publication Date: 2013-06-12
ASAHI KASEI ELECTRONICS CO LTD
View PDF4 Cites 10 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When a voltage deviation occurs, the voltage is concentrated in one unit of the series unit, causing a problem that the life is shortened

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
  • Circuit for balance-charging serial storage cells and method for balance-charging serial storage cells
  • Circuit for balance-charging serial storage cells and method for balance-charging serial storage cells
  • Circuit for balance-charging serial storage cells and method for balance-charging serial storage cells

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0179] Hereinafter, embodiments of the present invention will be described with reference to the drawings. In addition, in each of the drawings referred to in the following description, the same parts as those in other drawings are denoted by the same reference numerals, and descriptions of the same parts are appropriately omitted.

[0180] (Structure of the balance charging circuit of the first embodiment)

[0181] First, the configuration of the balance charging circuit for series-connected cells according to the first embodiment of the present invention will be described. figure 1 It is a circuit diagram showing the first embodiment of the present invention.

[0182] The balance charging circuit for series cells according to the first embodiment of the present invention includes a coil (inductor) L1, switches S1 to S6, a control circuit Control1, a cell Cell1, and a cell Cell2. The cell Cell1 and the cell Cell2 are connected in series, one of the series ends is connected...

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 coil for introducing an electrical charge to serial cells and a coil for balancing the voltage between the cells are shared, making the overall configuration of a circuit more compact. A coil is provided so as to be shared by first and second storage cells. One of the storage cells is charged upon a coil being electrically connected thereto, whereupon the other storage cell is charged upon the coil being electrically connected thereto. A plurality of switches for switching the path of a charging current flowing to the coil are provided. In a first charging period, there is formed a path over which the charging current flows to a reference voltage via the coil. In a second charging period, there is formed a path over which the charging current flows from the coil to the second cell. In a third charging period, there is formed a path over which the charging current flows to a reference voltage via the coil. In a fourth charging period, one end of the coil and one end of the first cell are conductively connected, the other end of the coil and the other end of the first cell are conductively connected, and a path of the charging current flowing from the coil to the first cell is formed.

Description

technical field [0001] The invention relates to a balanced charging circuit for series-connected electric storage units and a balanced charging method for series-connected electric storage units. Background technique [0002] Electric storage cells such as secondary batteries and capacitors (hereinafter referred to as cells) are often used by being connected in series. When the units are connected in series, the voltage at both ends of the series units becomes higher, so when the series units are used as a single module, that is, as a single package, an inductor is required to charge the series units with a low-voltage power supply and other boost-type charging circuits. Figure 109 The charging circuit 503 in FIG. 1 is a conventional charging circuit for generally known series cells. [0003] The charging circuit 503 includes a coil (inductor) L1, a switch S1, a switch S2, and a charging control circuit Control5. The input terminal 501 is connected to one end of the coil L...

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): H02J7/02H01M10/44
CPCH01M10/425H01M10/44H01M2010/4271H02J7/0019Y02E60/10H02J7/04H02J7/0068
Inventor 相浦正巳
Owner ASAHI KASEI ELECTRONICS CO LTD
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