Title: Method and design for externally applied laser welding of internal connections in a high power electrochemical cell

Abstract

An electrochemical cell includes components that are welded from an external source after the components are assembled in a cell canister. The cell canister houses electrode tabs and a core insert. An end cap insert is disposed opposite the core insert. An external weld source, such as a laser beam, is applied to the end cap insert, such that the end cap insert, the electrode tabs, and the core insert are electrically coupled by a weld which extends from the end cap insert to the core insert.

Inventors:

Martin, Charles E; Fontaine, Lucien; Gardner, William H

Issue Date:

2014-01-21

Research Org.:

A123 Systems LLC, Livonia, MI, USA

Sponsoring Org.:

USDOE

OSTI Identifier:

1117849

Patent Number(s):

8632907

Application Number:

12/623,967

Assignee:

A123 Systems LLC (Livonia, MI)

Patent Classifications (CPCs):

B - PERFORMING OPERATIONS B23 - MACHINE TOOLS B23K - SOLDERING OR UNSOLDERING

H - ELECTRICITY H01 - BASIC ELECTRIC ELEMENTS H01M - PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY

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B - PERFORMING OPERATIONS B23 - MACHINE TOOLS B23K - SOLDERING OR UNSOLDERING

B23K2101/34 - Coated articles {, e.g. plated or painted
B23K2103/02 - Iron or ferrous alloys
B23K2103/04 - Steel or steel alloys
B23K2103/05 - {Stainless steel}
B23K2103/08 - Non-ferrous metals or alloys
B23K2103/10 - Aluminium or alloys thereof
B23K2103/12 - Copper or alloys thereof
B23K2103/18 - Dissimilar materials
B23K2103/26 - {Alloys of Nickel and Cobalt and Chromium}
B23K2103/50 - {Inorganic material, e.g. metals, not provided for in B23K2103/02 – B23K2103/26}
B23K26/32 - taking account of the properties of the material involved
B23K26/323 - involving parts made of dissimilar metallic material

H - ELECTRICITY H01 - BASIC ELECTRIC ELEMENTS H01M - PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY

H01M10/0431 - {Cells with wound or folded electrodes
H01M10/0525 - Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodes
H01M10/0587 - of accumulators having only wound construction elements, i.e. wound positive electrodes, wound negative electrodes and wound separators

Y - NEW / CROSS SECTIONAL TECHNOLOGIES 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

Y02E60/10 - Energy storage

Y - NEW / CROSS SECTIONAL TECHNOLOGIES Y02 - TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE Y02P - CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS

Y02P70/50 - Manufacturing or production processes characterised by the final manufactured product

Y - NEW / CROSS SECTIONAL TECHNOLOGIES Y10 - TECHNICAL SUBJECTS COVERED BY FORMER USPC Y10T - TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION

Y10T29/53135 - Storage cell or battery

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DOE Contract Number:  

FC26-05NT42403

Resource Type:

Patent

Resource Relation:

Patent File Date: 2009 Nov 23

Country of Publication:

United States

Language:

English

Subject:

25 ENERGY STORAGE