Electronic device

• US 10,461,338 B2
• Filed: 07/17/2017
• Issued: 10/29/2019
• Est. Priority Date: 07/22/2016
• Status: Active Grant

• Current Assignee: Shinko Electric Industries Company Limited (Fujitsu Limited)
• Original Assignee: Shinko Electric Industries Company Limited (Fujitsu Limited)
• Inventors: Kubota, Kazuyuki
• Primary Examiner(s): Laios, Maria
• Application Number:
  US15/651,519
• Publication Number:
  US 20180026275A1
• Time in Patent Office: 834 Days
• CPC Class Codes: H01M 50/202 Casings or frames around the primary casing of a single cell or a single battery
• CPC Class Codes: H01M 50/216 adapted for button or coin cells
• CPC Class Codes: H01M 50/24 adapted for protecting batteries from their environment, e.g. from corrosion thermal insulation H01M10/658
• CPC Class Codes: H01M 50/298 characterised by the wiring of battery packs
• CPC Class Codes: H01M 6/38 by mechanical means
• CPC Class Codes: H05K 5/0004 comprising several parts forming a closed casing
• CPC Class Codes: H05K 5/0086 portable, e.g. battery operated apparatus casings for switching devices H01H9/02
• CPC Class Codes: H05K 5/0247 Electrical details of casings, e.g. terminals, passages for cables or wiring
• CPC Class Codes: H05K 7/1427 Housings

Abstract

An electronic device includes: a casing; a through hole which penetrates a bottom plate of the casing; a pin inserted into the through hole; a battery mounted on the pin inside the casing, wherein the battery includes a first lead terminal connected to an upper face of the battery, and a second lead terminal connected to a lower face of the battery; a first wiring layer disposed inside the casing and connected to the first lead terminal; and a second wiring layer disposed inside the casing to overlap with the second lead terminal in planar view. An upper face of the pin is higher in height than an upper face of the second wiring layer. The pin separates the second lead terminal and the second wiring layer from each other such that the second lead terminal and the second wiring layer are electrically insulated from each other.

Claims

1. An electronic device comprising:

a casing;

a through hole which penetrates a bottom plate of the casing;

a pin which is inserted into the through hole;

a battery which is mounted on the pin inside the casing, wherein the battery comprises a first lead terminal connected to an upper face of the battery, and a second lead terminal connected to a lower face of the battery;

a first wiring layer which is disposed inside the casing and connected to the first lead terminal;

a pressure sensitive adhesive sheet which is fixed to the pin and temporarily bonded to an outer face of the bottom plate; and

a second wiring layer which is disposed inside the casing so as to overlap with the second lead terminal in planar view,

wherein an upper face of the pin is set to be higher in height than an upper face of the second wiring layer, and

the pin separates the second lead terminal and the second wiring layer from each other such that the second lead terminal and the second wiring layer are electrically insulated from each other.

2. The electronic device according to claim 1, wherein

when the pin is pulled out of the casing through the through hole, the second lead terminal comes into contact with the second wiring layer such that power can be fed from the battery.

3. The electronic device according to claim 1, wherein

the second wiring layer comprises an electronic pad which is disposed below the battery, and

the through hole penetrates the bottom plate and the electrode pad.

4. The electronic device according to claim 3, wherein

the electrode pad has a donut shape;

and

the electrode pad and the second lead terminal overlap with each other in planar view.

5. The electronic device according to claim 3, further comprising:

a substrate which is disposed inside the casing,

wherein the first wiring layer and the second wiring layer are disposed on the substrate, and

the through hole penetrates the bottom plate, the substrate and the electrode pad.

6. The electronic device according to claim 1, wherein

the pin is fixed to the pressure sensitive adhesive sheet by an adhesive agent or by caulk joining.

7. The electronic device according to claim 1, wherein the pin is formed of an insulating resin.

8. The electronic device according to claim 1, wherein

the first lead terminal is a positive electrode lead terminal of the battery, and

the second lead terminal is a negative electrode lead terminal of the battery.

9. The electronic device according to claim 1, further comprising:

an electronic circuit module which is connected to the first wiring layer and the second wiring layer.