Battery-embedded device

Patent metadata

Field	Value
Publication number	US-10476318-B2
Application number	US-201515508536-A
Country	US
Kind code	B2
Filing date	Oct 6, 2015
Priority date	Oct 27, 2014
Publication date	Nov 12, 2019
Grant date	Nov 12, 2019

Abstract

A battery-embedded device includes a substrate having a wiring, a coil fixed to the substrate, a battery fixed to the substrate, and a first temperature detecting element that is disposed on the substrate and configured to detect a temperature of the battery. An occupancy rate of the wiring in a first region of the substrate which is immediately below the first temperature detecting element is lower than an occupancy rate of the wiring in a second region of the substrate other than the first region.

First claim

The invention claimed is:

1. A battery-embedded device comprising:
a multi-layer wiring substrate in which a wiring is buried;
a coil fixed to the multi-layer wiring substrate;
a battery fixed to the multi-layer wiring substrate; and
a first temperature detecting element that is disposed on the multi-layer wiring substrate and configured to detect a temperature of the battery,
wherein an occupancy rate of the wiring in a first region of the multi-layer wiring substrate which is immediately below the first temperature detecting element is lower than an occupancy rate of the wiring in a second region of the multi-layer wiring substrate other than the first region.

2. The battery-embedded device according to claim 1 , wherein:
the multi-layer wiring substrate has a projection portion nearby the battery, and
the first temperature detecting element is disposed on the projection portion.

3. The battery-embedded device according to claim 1 , wherein
only one or more parts of the wiring which are directly connected to the first temperature detecting element exists in the first region.

4. The battery-embedded device according to claim 1 , wherein
a distance between the first temperature detecting element and the coil is longer than a distance between the first temperature detecting element and the battery.

5. The battery-embedded device according to claim 1 , further comprising a second temperature detecting element configured to detect a temperature of the multi-layer wiring substrate,
wherein a distance between the second temperature detecting element and the battery is longer than the distance between the first temperature detecting element and the battery.

6. A battery-embedded device comprising:
a substrate having a wiring;
a coil fixed to the substrate;
a battery fixed to the substrate;
a first temperature detecting element that is disposed on the substrate and configured to detect a temperature of the battery; and
a second temperature detecting element configured to detect a temperature of the substrate, wherein:
an occupancy rate of the wiring in a first region of the substrate which is immediately below the first temperature detecting element is lower than an occupancy rate of the wiring in a second region of the substrate other than the first region, and
a distance between the second temperature detecting element and the battery is longer than a distance between the first temperature detecting element and the battery.

7. The battery-embedded device according to claim 6 , wherein:
the substrate has a pair of projection portions, and
the battery is disposed between the pair of projection portions.

8. The battery-embedded device according to claim 7 , wherein:
the first temperature detecting element is disposed on one of the pair of projection portions.

9. The battery-embedded device according to claim 1 , wherein a plurality of wirings is buried in the multi-layer wiring substrate.

10. The battery-embedded device according to claim 9 , wherein an occupancy rate of the plurality of wirings in a first region of the multi-layer wiring substrate which is immediately below the first temperature detecting element is lower than an occupancy rate of the plurality of wirings in a second region of the multi-layer wiring substrate other than the first region,
the occupancy rate of the plurality of wirings in the first region is about 20% or less, and
the occupancy rate of the plurality of wirings in the second region is 20% to 100%.

Assignees

• Panasonic Ip Man Co Ltd

Inventors

• Inoue Takashi
• Yajima Hiroshi
• Ito Shinichiro
• Hagiwara Katsuya

Classifications

• H02J7/70

  characterised by the mechanical construction · CPC title

• H02J7/977 Primary

  of the battery · CPC title

• H02J50/10

  using inductive coupling · CPC title

• H01M2/105

  Electricity · mapped topic

• H01M10/48

  Accumulators combined with arrangements for measuring, testing or indicating the condition of cells, e.g. the level or density of the electrolyte (constructional details of current conducting connections for detecting conditions inside cells or batteries, e.g. details of voltage sensing terminals, H01M50/569) · CPC title