BATTERY OPERATED DEVICE, IN PARTICULAR IMPLANTABLE MEDICAL-ELECTRONIC DEVICE

• US 20090075167A1
• Filed: 08/26/2008
• Published: 03/19/2009
• Est. Priority Date: 09/13/2007
• Status: Active Grant

• Current Assignee: LITRONIK Batterietechnologie GmbH (Micro Systems Schweiz GmbH)
• Original Assignee: Biotronik CRM Patent AG (Biotronik SE & Company KG)
• Inventors: Traulsen, Tim, Hucke, Thomas, Drews, Juergen
• Granted Patent: US 8,043,744 B2
• Time in Patent Office: Days
• US Class Current: 429/176
• CPC Class Codes: A61N 1/375 Constructional arrangements, e.g. casings
• CPC Class Codes: A61N 1/37512 Pacemakers
• CPC Class Codes: A61N 1/378 Electrical supply
• CPC Class Codes: H01M 10/0566 Liquid materials
• CPC Class Codes: H01M 10/0585 of accumulators having only flat construction elements, i.e. flat positive electrodes, flat negative electrodes and flat separators
• CPC Class Codes: H01M 50/103 prismatic or rectangular H01M50/109, H01M50/11 take precedence
• CPC Class Codes: H01M 50/121 Organic material
• CPC Class Codes: H01M 50/133 Thickness
• CPC Class Codes: Y02E 60/10 Energy storage using batteries

Abstract

Battery-operated device, having an electrically operated functional unit and an electrochemical voltage source, which are housed together in an essentially gas-tight device housing, the electrochemical voltage source having an electrolyte based on an ionic liquid and a coating-free plastic battery housing.

Claims

1. A battery-operated device (11), having an electrically operated functional unit (12) and an electrochemical voltage source (10), which are housed together in an essentially gas-tight device housing (14), wherein the electrochemical voltage source has an electrolyte based on an ionic liquid and a coating-free plastic battery housing (8).

2. The device according to claim 1, wherein the electrolyte is implemented in a grade free of solvents and the coating-free plastic battery housing (8) is implemented in such a way that no measurable outgassing from the coating-free plastic battery housing occurs at operating temperature.

3. The device according to claim 1, implemented as an implantable medical-electronic device, in particular a cardiac pacemaker, defibrillator, neurostimulator, insulin or medication pump having a gas-tight welded or sealed metal device housing.

4. The device according to claim 1, wherein the electrochemical voltage source (10) is implemented as a lithium battery.

5. The device according to claim 1, wherein the coating-free plastic battery housing (8) has an injection-molded part or a film deep-drawn part.

6. The device according to claim 1, wherein the electrochemical voltage source (10) has a liquid electrolyte and a coating-free plastic battery housing (8) implemented as liquid-tight, in particular having a welded-on cover.

7. The device according to claim 1, wherein the electrochemical voltage source (10) has a gel electrolyte and a coating-free plastic battery housing (8) not implemented as liquid-tight, in particular having a formfitting inserted cover.

8. The device according to claim 1, wherein the coating-free plastic battery housing (8) is made from polyethylene or polycarbonate.

9. The device according to claim 1, wherein the ionic liquid forming a base of the electrolyte has alkylated imidazolium, pyridinium, ammonium, or phosphonium ions as cations.

10. The device according to claim 1, wherein the electrochemical voltage source (10) has at least one material from the group manganese dioxide, copper oxyphosphate, lithium iron phosphate, lithium cobalt oxide, lithium nickel cobalt oxide, carbon monofluoride, silver vanadium oxide, and copper oxide as a cathode material (1) and/or a material from the group lithium, carbon, and lithium titanium oxide as an anode material (4a, 4b).