Battery with resin integrated resin substrate

• US 6,861,821 B2
• Filed: 06/27/2002
• Issued: 03/01/2005
• Est. Priority Date: 06/28/2001
• Status: Expired due to Fees

• Current Assignee: Matsushita Electric Industrial Company Limited (Panasonic Holdings Corporation)
• Original Assignee: Matsushita Electric Industrial Company Limited (Panasonic Holdings Corporation)
• Inventors: Tsuruta, Kunio, Kozu, Katsumi, Masumoto, Kenjin
• Primary Examiner(s): Tso, Edward H.
• Application Number:
  US10/343,299
• Publication Number:
  US 20030180582A1
• Time in Patent Office: 978 Days
• Field of Search: 320/107, 320/110, 320/116, 429/99, 429/100
• US Class Current: 320/107
• CPC Class Codes: H01M 2200/10 Temperature sensitive devices
• CPC Class Codes: H01M 50/209 adapted for prismatic or rectangular cells H01M50/216 takes precedence
• CPC Class Codes: Y02E 60/10 Energy storage using batteries

Abstract

A battery and a battery pack comprising a rechargeable battery (2) and a circuit substrate (3) integrated therein by a resin mold package (11) are provided. Resin is filled between the rechargeable battery (2) and the substrate (3) electrically connected thereto, so as to unite them as one battery or battery pack. The rechargeable battery (2) includes an engaging member (26) which functions as an anchor to the resin mold package (11) formed onto the battery, whereby the resin mold package (11) is firmly joined to the rechargeable battery (2). A thermo-sensitive element can be incorporated either on the circuit substrate (3) or within the space filled with resin.

Claims

1. A battery comprising a single battery or a battery consisting of a plurality of cells connected to one another, a circuit substrate including a protection circuit element for the battery and external terminals, and a resin mold package interposed between the circuit substrate and said battery for uniting said battery and said circuit substrate, the protection circuit element being mounted on one side of the circuit substrate opposite one end face of said battery where one of terminals of the battery is disposed, the external terminals being provided on the opposite side from the protection circuit element of the circuit substrate, and said resin mold package covering and providing electrical insulation between said one end face of the battery and said one side of the circuit substrate where the protection circuit element is mounted.

2. A battery comprising a plain battery, a substrate on which at least external terminals are formed, a connection member for electrically connecting the substrate and said plain battery, a resin mold package formed by filling resin such as to bond predetermined faces of the plain battery and the substrate so as to integrate the two, and engaging means for engaging the resin mold package with the plain battery and/or the substrate, wherein the engaging means is formed in the shape of an undercut protrusion having an anchoring function with respect to the resin mold package, and provided on a portion of the plain battery and/or the substrate where the resin mold package is bonded.

4. The battery according to claim 2, wherein the engaging means is a resin bond material capable of forming a bond with the resin mold package and with metal, and provided on a portion of the plain battery and/or the substrate where the resin mold package is bonded.

5. The battery according to claim 2, wherein the connection member is a thermo-sensitive element having a lead, and the lead connects the plain battery to the substrate.

3. A battery comprising a plain battery, a substrate on which at least external terminals are formed, a connection member for electrically connecting the substrate and said plain battery, a resin mold package formed by filling resin such as to bond predetermined faces of the plain battery and the substrate so as to integrate the two, engaging means for engaging the resin mold package with the plain battery and/or the substrate, and an outer cover for covering the outer face of the plain battery with the substrate, wherein at least the external terminals are exposed to the outside, wherein the engaging means is formed in the shape of an undercut protrusion having an anchoring function with respect to the resin mold package, and provided on a portion of the plain battery and/or the substrate where the resin mold package is bonded.

6. The battery according to claim 3, wherein the outer cover includes an upper resin mold piece covering at least part of the substrate and the resin mold package while exposing the external terminals to the outside, a lower resin mold piece covering the opposite side face from the substrate of the plain battery, and a wrapping sheet for wrapping part of the upper resin mold piece and the lower resin mold piece and a body part of the plain battery.

7. The battery according to claim 6, further including a coupling resin mold piece connecting the upper resin mold piece and the lower resin mold piece.

8. A battery pack comprising a single battery or a battery consisting of a plurality of cells connected to one another, a circuit substrate including a protection circuit element for the battety and external terminals, a first frame supporting the circuit substrate and one end face of the battery and having an aperture for exposing the external terminals, a second frame holding the other end face of the battery, and a pair of coupling members connecting said first and second frames along shorter side edges of said battery.

9. The battery pack according to claim 8, further comprising a sheet covering an exposed surface of the battery and forming part of an outer cover member integrally with the first and second frames.

10. The battery pack according to claim 8, further comprising a resin mold package uniting the battery and the circuit substrate and covering the surface of the circuit substrate where the protection circuit element is mounted for providing electrical insulation, the first frame being formed such as to surround said resin mold package, and said first frame, second frame, and pair of coupling members being integrally formed.

11. A battery pack comprising one or a plurality of batteries, a substrate formed with at least external terminals, a connection member for electrically connecting the substrate and said battery, a resin mold package formed by filling resin such as to bond predetermined faces of the battery and the substrate so as to integrate the two, and engaging means for engaging the resin mold package and the battery and/or the substrate, wherein the engaging means is formed in the shape of an undercut protrusion having an anchoring function with respect to the resin mold package, and provided on a portion of the battery and/or the substrate where the resin mold package is bonded.

13. The battery pack according to claim 11, wherein the engaging means is a resin bond material capable of forming a bond with the resin mold package and with metal, and provided on a portion of the battery and/or the substrate where the resin mold package is bonded.

14. The battery pack according to claim 11, wherein the connection member is a thermo-sensitive element having a lead, and the lead connects the battery to the substrate.

12. A battery pack comprising one or a plurality of batteries, a substrate formed with at least external terminals, a connection member for electrically connecting the substrate and said battery, a resin mold package formed by filling resin such as to bond predetermined faces of the battery and the substrate so as to integrate the two, engaging means for engaging the resin mold package and the battery and/or the substrate, and an outer cover for covering the outer face of the battery with the substrate, wherein at least the external terminals are exposed to the outside, wherein the engaging means is formed in the shape of an undercut protrusion having an anchoring function with respect to the resin mold package, and provided on a portion of the battery and/or the substrate where the resin mold package is bonded.

15. The battery pack according to claim 12, wherein the outer cover includes an upper resin mold piece covering at least part of the substrate and the resin mold package while exposing the external terminals to the outside, a lower resin mold piece covering the opposite side face from the substrate of the rechargeable battery, and a wrapping sheet for wrapping part of the upper resin mold piece and the lower resin mold piece and a body part of the rechargeable battery.

16. The battery pack according to claim 12, wherein the plurality of rechargeable batteries are arranged side by side and integrated by filling resin in a gap between the batteries.

17. The battery pack according to claim 12, further comprising a coupling resin mold piece connecting the upper resin mold piece and the lower resin mold piece.