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Anode Can Sacrificial Mandrels And Fabrication Methods

A manufacturing method and anode technology, which can be used in electrode manufacturing, final product manufacturing, secondary battery manufacturing, etc., and can solve problems such as erosion and obstruction

Active Publication Date: 2018-01-26
SONOVA AG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

On the other hand, the subsequent use of hydrochloric acid to remove the zinc mandrel prevents the use of certain materials for the innermost layer of the anode can (e.g., tin and indium) (Using certain materials for the innermost layer of the anode can improves metal-air batteries properties and long-term stability), because hydrochloric acid aggressively attacks these materials

Method used

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  • Anode Can Sacrificial Mandrels And Fabrication Methods
  • Anode Can Sacrificial Mandrels And Fabrication Methods
  • Anode Can Sacrificial Mandrels And Fabrication Methods

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Embodiment Construction

[0021] What follows is a detailed description of the best known modes of carrying out the invention. This description is not limiting, but merely illustrates the general principles of the invention. For this reason, the present invention can be used in the manufacture of various anode cans.

[0022] The exemplary battery illustrated in FIG. 1 includes a hollow anode can 102 (sometimes referred to as a "battery can") that can utilize an exemplary sacrificial mandrel and the following ref. Figure 5A -10 An example of an anode tank fabricated by the fabrication techniques discussed. In addition to the exemplary anode can 102 , the battery 100 includes an anode material 104 and a cathode assembly 106 . Anode can 102 is shown in FIGS. 2-4 in an empty and pre-coiled state, including an anode portion 108 for anode material 104 and a cathode portion 110 for cathode assembly 106 . The exemplary anode can 102 is also provided with an inwardly formed region 112 (or "neck") that define...

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Abstract

An anode can fabrication method including the steps of depositing metal onto an anode can sacrificial mandrel formed from a polymer that dissolves in the presence of an organic solvent and dissolvingthe sacrificial mandrel with the organic solvent.

Description

technical field [0001] The present invention relates generally to hearing aid batteries, and more particularly to methods of manufacturing anode cans for use in hearing aid batteries. Background technique [0002] Long-wear hearing aids are configured to be worn continuously in the ear canal for weeks to months. Such devices may be sized miniature to fit perfectly within the ear canal and configured so that the receiver fits snugly against the ear canal very close to the eardrum. Batteries such as metal-air batteries are an integral part of the long-wear hearing aid, ie a non-removable part. In some cases, the batteries include elongated anode cans with relatively complex shapes, which are volume efficient and, combined with other aspects of long-wear hearing aids, facilitate placement of the hearing aid deep in the ear canal. An example of such a battery can be found, for example, in US Patent No. 8682016, which is incorporated herein by reference. [0003] Anode cans wi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M10/04H01M10/30
CPCH01M2220/30Y02E60/10H01M50/124Y02P70/50H01M50/107C23C18/32H01M4/0402H01M4/0423H01M4/045H01M2004/025H01M2004/027
Inventor C·青克
Owner SONOVA AG
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