Semiconductor with a battery unit

• US 5,119,269 A
• Filed: 08/23/1990
• Issued: 06/02/1992
• Est. Priority Date: 08/23/1989
• Status: Expired due to Term

• Current Assignee: Seiko Epson Corporation (Seiko Group)
• Original Assignee: Seiko Epson Corporation (Seiko Group)
• Inventors: Nakayama, Iwao
• Primary Examiner(s): Picard, Leo P.
• Assistant Examiner(s): Whang, Young S.
• Application Number:
  US07/571,195
• Time in Patent Office: 649 Days
• Field of Search: 361/380, 361/392, 361/393, 361/396, 361/394, 361/405, 365/228, 365/229, 365/62, 365/52, 357/76, 357/75, 307/150, 429/99
• US Class Current: 361/820
• CPC Class Codes: H01L 23/49593 Battery in combination with a leadframe
• CPC Class Codes: H01L 2924/00 Indexing scheme for arrangements or methods for connecting or disconnecting semiconductor or solid-state bodies as covered by H01L24/00
• CPC Class Codes: H01L 2924/0002 Not covered by any one of groups H01L24/00, H01L24/00 and H01L2224/00
• CPC Class Codes: H01M 50/216 adapted for button or coin cells
• CPC Class Codes: Y02E 60/10 Energy storage using batteries

Abstract

A semiconductor circuit assembly composed of: a semiconductor device including at least one semiconductor element, battery lead terminals which are connected to the element, and a molded resin body encapsulating the element and the lead terminals and having at least one main exterior surface; and a battery unit mounted on the exterior surface of the semiconductor device, the battery unit having battery leads connected to the lead terminals and a battery holder for releasably holding a battery in electrical contact with the leads.

Claims

1. A semiconductor circuit assembly comprising:

a semiconductor device including at least one semiconductor element, battery lead terminals which are connected to said element, and a molded resin body which encapsulates said element and said lead terminals and having at least one main exterior surface; and

a battery unit which is mounted on said main exterior surface of said molded resin body, said battery unit having battery leads connected to said lead terminals and a battery holder for releasably holding a battery in electrical contact with said leads,

wherein said battery unit has an exterior surface which faces away from said semiconductor device when said battery unit is mounted on said main exterior surface of said molded resin body, said battery holder is open at said exterior surface of said battery unit, and said battery leads are positioned relative to said holder for permitting removal of a battery from said holder while said battery unit is mounted on said main exterior surface of said molded resin body.

2. An assembly as defined in claim 1 wherein there is a plurality of battery holders in said battery unit, each said holder being structured for holding a respective one of a plurality of batteries so that the batteries are in electrical parallel connection.

3. An assembly as defined in claim 2 wherein said battery holders and said leads are constructed such that each holder has a battery insertion direction which is different from that of at least one other holder.

4. An assembly as defined in claim 1 wherein each said lead has a plurality of battery contact points for one battery.

5. An assembly as defined in claim 1 wherein each said battery lead extends between said main exterior surface of said molded resin body and said battery unit.

6. An assembly as defined in claim 1 wherein said battery leads are constructed to press against a battery held in said battery holder with a spring force and said battery holder includes a battery retaining part for mechanically retaining a battery in said battery holder.

7. An assembly as defined in claim 1 wherein said battery lead terminals protrude from said molded resin body and are bonded to said battery leads, and said battery unit rests against said main exterior surface of said resin body.

8. An assembly as defined in claim 1 wherein said battery unit and said semiconductor device comprise positioning means for establishing a defined position between said battery unit and said semiconductor device.

9. An assembly as defined in claim 2 further comprising two batteries each held in a respective battery holder.

10. An assembly as defined in claim 1 further comprising a battery held in said battery holder.

17. An assembly as defined in claim 2 wherein each of said battery leads is constructed to be electrically connected to each of the batteries.

18. An assembly as defined in claim 10 wherein said battery has the form of a thin disk with a peripheral edge and one of said battery leads is constructed to electrically contact the peripheral edge of said battery.

11. A semiconductor circuit assembly comprising:

a semiconductor device including at least one semiconductor element, two battery lead terminals which are connected to said element, and a molded resin body which encapsulates said element and said lead terminals, said body having two opposed ends, with each end being provided with a recess and each lead terminal projecting into a respective recess;

a battery unit having two battery leads each connected to a respective lead terminal and a battery holder for releasably holding a battery in electrical contact with said leads for supplying power to said semiconductor element; and

two positioning members which are connected to said battery unit and which are each seated in a respective recess of said molded resin body for holding said battery unit in a defined position relative to said molded resin body.

wherein said battery unit has an exterior surface which faces away from said semiconductor device when said battery unit is being held in said defined position relative to said molded resin body, said battery holder is open at said exterior surface of said battery unit, and said battery leads are positioned relative to said holder for permitting removal of a battery from said holder while said battery unit is being held in said defined position relative to said molded resin body.

12. An assembly as defined in claim 11 wherein said battery unit further includes a second molded resin body and said positioning members are integral parts of said second molded resin body.

13. An assembly as defined in claim 12 wherein said first-recited molded resin body has a main exterior surface on which said battery unit is mounted, each said recess has three surfaces which extend transversely to said main exterior surface, and each positioning member has three surfaces which engage said three surfaces of a respective recess to locate said battery unit in the defined position relative to said first-recited molded resin body.

14. An assembly as defined in claim 13 wherein each said positioning member surrounds a respective battery lead terminal in the region of connection to its associated batter lead.

15. An assembly as defined in claim 12 wherein each said positioning member surrounds a respective battery lead terminal in the region of connection to its associated battery lead.

16. An assembly as defined in claim 11 wherein said semiconductor device further comprises a plurality of connecting pins connected in circuit with said semiconductor element and connectable to a socket.