CA2561345A1 - Core structure for a circular lithium secondary battery - Google Patents

Core structure for a circular lithium secondary battery Download PDF

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Publication number
CA2561345A1
CA2561345A1 CA002561345A CA2561345A CA2561345A1 CA 2561345 A1 CA2561345 A1 CA 2561345A1 CA 002561345 A CA002561345 A CA 002561345A CA 2561345 A CA2561345 A CA 2561345A CA 2561345 A1 CA2561345 A1 CA 2561345A1
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CA
Canada
Prior art keywords
positive
lead area
conductive
negative
core
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CA002561345A
Other languages
French (fr)
Other versions
CA2561345C (en
Inventor
Donald P. H. Wu
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Pihsiang Energy Technology Co Ltd
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to CA2561345A priority Critical patent/CA2561345C/en
Publication of CA2561345A1 publication Critical patent/CA2561345A1/en
Application granted granted Critical
Publication of CA2561345C publication Critical patent/CA2561345C/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/05—Accumulators with non-aqueous electrolyte
    • H01M10/052—Li-accumulators
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/50—Current conducting connections for cells or batteries
    • H01M50/531—Electrode connections inside a battery casing
    • H01M50/538—Connection of several leads or tabs of wound or folded electrode stacks
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/50—Current conducting connections for cells or batteries
    • H01M50/528—Fixed electrical connections, i.e. not intended for disconnection
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/50—Current conducting connections for cells or batteries
    • H01M50/531—Electrode connections inside a battery casing
    • H01M50/533—Electrode connections inside a battery casing characterised by the shape of the leads or tabs
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/50—Current conducting connections for cells or batteries
    • H01M50/531—Electrode connections inside a battery casing
    • H01M50/536—Electrode connections inside a battery casing characterised by the method of fixing the leads to the electrodes, e.g. by welding
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10—Energy storage using batteries
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
    • Y02P70/50—Manufacturing or production processes characterised by the final manufactured product

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Connection Of Batteries Or Terminals (AREA)
  • Secondary Cells (AREA)

Abstract

A core structure for a circular lithium secondary battery is disposed in a case of the battery and comprises: a core, an electrode assembly, and two conductive fixing assemblies. A connecting member serves as an electrical conductive connection for connecting the conductive pressing pieces to the positive lea d terminal or the negative lead terminal, and the connecting member is a curve d flexible structure. By such arrangements, even if there is a dimension error in the core or the case, which can be overcome by the deformation of the connecting member, and thus the battery can be assembled successfully.

Claims (4)

1. A core structure for a circular lithium secondary battery being disposed in a case of the battery and electrically connected to positive and negative terminals of the battery by two connecting members, the core structure comprising:

a core disposed in the case;

an electrode assembly including at least one positive layer, one separating layer and one negative layer, wherein the positive layer, the separating layer and the negative layer are superposed one another and wind around the core, an uncoated area is formed at a side of the positive layer for use as a positive lead area, and the negative layer is formed at another side thereof opposite the positive layer with an uncoated area for use as a negative lead area, the positive and negative lead areas protrude out of both sides of the electrode assembly, respectively;

two conductive fixing assemblies each including at least one fastener and at least one conductive pressing piece, wherein the conductive pressing piece is disposed outside the positive lead area or the negative lead area, the conductive pressing piece is fixed on the core by inserting the fastener through the through hole of the conductive pressing piece, so that the conductive pressing piece is firmly pressed against the positive lead area or the negative lead area, and the positive lead area or the negative lead area is maintained in a close electrical contact with the conductive pressing piece, the conductive fixing assemblies are initially connected to the connecting members and then electrically connected to the positive lead terminal or the negative lead terminal.
2. The core structure for a circular lithium secondary battery as claimed in claim 1, wherein the conductive connecting members are a flexible wire.
3. The core structure for a circular lithium secondary battery as claimed in claim 1, wherein two conductive pressing pieces are disposed outside the positive lead area or the negative lead area, and the conductive pressing pieces are firmly pressed against the positive lead area or the negative lead area from both sides by inserting the fastener through one of the conductive pressing pieces, the core, and another one of the conductive pressing pieces, respectively, and the positive lead area or the negative lead area is maintained in a close electrical contact with the conductive pressing pieces.
4. The core structure for a circular lithium secondary battery as claimed in claim 1, wherein either end of the core is covered with a conductive sleeve, when the conductive pressing piece is pressed against the positive lead area or the negative lead area, the conductive sleeve can improve electrical connection between pressing surfaces of the positive lead area and negative lead area.
CA2561345A 2006-09-22 2006-09-22 Core structure for a circular lithium secondary battery Active CA2561345C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CA2561345A CA2561345C (en) 2006-09-22 2006-09-22 Core structure for a circular lithium secondary battery

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA2561345A CA2561345C (en) 2006-09-22 2006-09-22 Core structure for a circular lithium secondary battery

Publications (2)

Publication Number Publication Date
CA2561345A1 true CA2561345A1 (en) 2008-03-22
CA2561345C CA2561345C (en) 2010-08-03

Family

ID=39190403

Family Applications (1)

Application Number Title Priority Date Filing Date
CA2561345A Active CA2561345C (en) 2006-09-22 2006-09-22 Core structure for a circular lithium secondary battery

Country Status (1)

Country Link
CA (1) CA2561345C (en)

Also Published As

Publication number Publication date
CA2561345C (en) 2010-08-03

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