Patent · US Active

Current collector for electrochemical energy storage apparatus

US10700336B2 · kind B2 · utility

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13Claims

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Assignee

Bayerische Motoren Werke Aktiengesellschaft · DE

Inventors

Daniel Loos · Munich, DE
Andreas Schleicher · Runkel, DE
Robert Lustig · Munich, DE

Key dates

Filing date	Apr 27, 2017
Grant date	Jun 30, 2020
Priority date	—
Expiry date	Jun 13, 2037

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY02T10/70
WIPO fieldElectrical machinery, apparatus, energy
WIPO sectorElectrical engineering

Abstract

An electrochemical energy storage apparatus, in particular a rechargeable lithium-ion battery, having at least one current collector device with at least one current conductor arm, and at least one energy storage cell which has at least one anode, one cathode and one separator. The separator touches the anode and the cathode at least in sections in, in each case, a separator contact area. The current conductor arm can be electrically conductively connected to, in each case, at least one anode or cathode by way of a current output conductor contact area. A surface normal on the current output conductor contact area and a surface normal on the separator contact area form an acute angle a. This angle a is selected from a range which is greater than 5°, with preference greater than 15°, preferably greater than 25° and particularly preferably greater than 35°, and furthermore the angle α is less than or equal to 90°, with preference less than 75°, preferably less than 65° and particularly preferably less than 45°.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.