Battery with front face and rear face contacts

Patent metadata

Field	Value
Publication number	US-10522796-B2
Application number	US-201715699233-A
Country	US
Kind code	B2
Filing date	Sep 8, 2017
Priority date	Jan 31, 2017
Publication date	Dec 31, 2019
Grant date	Dec 31, 2019

Abstract

A battery structure has structure anode and cathode contacts on a front face and on a rear face. The battery structure includes a battery having battery anode and cathode contacts only on a front face thereof. A film including a conductive layer and an insulating layer jackets the battery. The conductive layer extends over the battery anode and cathode contacts and is interrupted therebetween. Openings are provided in the insulating layer on the front and rear faces of the battery structure to form the structure anode and cathode contacts of the battery structure.

First claim

The invention claimed is:

1. A battery structure, comprising:
battery structure anode and cathode contacts on a front face and on a rear face of the battery structure;
a battery having battery anode and cathode contacts on a front face of the battery only, and
a jacket film comprising a conductive layer and an insulating layer, the conductive layer extending over the battery anode and cathode contacts and being interrupted between the battery anode and cathode contacts such that said battery anode and cathode contacts are not electrically connected to each other by the conductive layer, and the insulating layer comprising openings on the front and rear faces of the battery structure to form said battery structure anode and cathode contacts.

2. The battery structure according to claim 1 , wherein the jacket film is fixed to the battery by an adhesive layer.

3. The battery structure according to claim 2 , wherein the openings on the front face of the battery structure each comprise a first cavity and a second cavity that pass through the conductive layer and the adhesive layer, the first cavity being positioned above the battery anode contact and the second cavity being positioned above the battery cathode contact, said first and second cavities being filled with a conductive material.

4. The battery structure according to claim 1 , wherein the insulating layer is glued to the conductive layer.

5. The battery structure according to claim 1 , wherein the insulating layer has a thickness of between 10 and 30 μm.

6. The battery structure according to claim 1 , wherein the insulating layer is made of polyethylene terephthalate.

7. The battery structure according to claim 1 , wherein the conductive layer has a thickness of between 10 and 30 μm.

8. The battery structure according to claim 1 , wherein the conductive layer is made of a metal.

9. The battery structure according to claim 8 , wherein the metal for the conductive layer is aluminum.

10. A battery apparatus, comprising:
a battery having a battery anode contact and a battery cathode contact, wherein the battery anode contact and battery cathode contact are present only on a front face of the battery;
a film comprising an insulating layer and a conductive layer, wherein the film is mounted to the front face of the battery and extends and is further mounted to side edges of the battery and further extends and is further mounted to at least part of a rear face of the battery;
wherein said conductive layer includes an interruption in conductivity of the conductive layer located between the battery anode contact and battery cathode contact on the front face of the battery;
wherein the film further includes:
a first opening extending through the film to the battery anode contact;
a second opening extending through the film to the battery cathode contact;

a first battery apparatus anode contact electrically connected to the battery anode contact through the first opening;
a first battery apparatus cathode contact electrically connected to the battery cathode contact through the second opening;
a second battery apparatus anode contact electrically connected to the conductive layer of the film on the rear face of the battery; and
a second battery apparatus cathode contact electrically connected to the conductive layer of the film on the rear face of the battery.

11. The battery apparatus of claim 10 , wherein the interruption in conductivity of the conductive layer electrically isolates the battery anode contact from the battery cathode contact.

12. The battery apparatus of claim 10 , wherein the film is mounted to the battery by an adhesive layer.

13. The battery apparatus of claim 10 , further comprising a conductive material filling the first and second openings to electrically connect the conductive layer to each of the battery anode contact and battery cathode contact.

14. The battery apparatus of claim 10 , wherein the conductive layer is made of a metal.

15. The battery apparatus of claim 14 , wherein the metal for the conductive layer is aluminum.

16. The battery apparatus of claim 10 , wherein the insulating layer is made of polyethylene terephthalate.

Assignees

• St Microelectronics Tours Sas

Inventors

• Ladroue Julien
• Boufnichel Mohamed

Classifications

• H01M10/058 Primary

  Construction or manufacture · CPC title

• H01M10/0436

  Small-sized flat cells or batteries for portable equipment · CPC title

• H01M10/0525

  Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodes; Lithium-ion batteries · CPC title

• H01M2220/30

  Batteries in portable systems, e.g. mobile phone, laptop · CPC title

• H01M2/0287

  Electricity · mapped topic