Battery pack with wireless charging and near field communication functions

Patent metadata

Field	Value
Publication number	US-9667091-B2
Application number	US-201514836926-A
Country	US
Kind code	B2
Filing date	Aug 26, 2015
Priority date	Dec 24, 2014
Publication date	May 30, 2017
Grant date	May 30, 2017

Abstract

A battery pack includes an antenna attached to a battery cell, a sensor configured to sense an energy level induced in the antenna, a controller configured to determine, according to a sensed signal of the sensor, whether the energy level is a first energy level for wireless charging or is a second energy level for near field communication, and a switch connecting the antenna to a battery charger or a near field communication circuit according to a control signal of the controller.

First claim

What is claimed is:

1. A battery pack comprising:
an antenna attached to a battery cell;
a sensor configured to sense an energy level induced in the antenna;
a controller configured to determine, according to a sensed signal of the sensor, whether the energy level is a first energy level for wireless charging or is a second energy level for near field communication; and
a switch connecting the antenna to a battery charger or a near field communication circuit according to a control signal of the controller.

2. The battery pack of claim 1 , wherein, when the energy level is determined as the first energy level, the controller is configured to control the switch to connect the antenna to the battery charger, and
wherein, when the energy level is determined as the second energy level, the controller is configured to control the switch to connect the antenna to the near field communication circuit.

3. The battery pack of claim 1 , wherein the energy level corresponds to a voltage, a current, a power, or a frequency level.

4. The battery pack of claim 1 , wherein the first energy level and the second energy level are different from each other.

5. The battery pack of claim 1 , wherein the battery charger comprises:
an AC-DC converter connected to the switch; and
a charging circuit between the AC-DC converter and the battery cell.

6. The battery pack of claim 1 , wherein the sensor, the controller, the switch, the battery charger, and the near field communication circuit are mounted on a circuit board, and the circuit board is combined with the battery cell.

7. The battery pack of claim 6 , wherein, the battery charger and the near field communication circuit are electrically separated from each other.

8. The battery pack of claim 6 , wherein the circuit board further comprises:
an antenna terminal connected to an antenna wire of the antenna; and
a mounting groove in which the antenna wire of the antenna is mounted.

9. The battery pack of claim 8 , wherein an insulation member is between the antenna wire and the circuit board or is between the antenna wire and the battery cell.

10. The battery pack of claim 1 , wherein the antenna comprises:
a ferrite layer attached to the battery cell; and
an antenna pattern attached to the ferrite layer.

11. The battery pack of claim 1 , wherein the battery cell is a prismatic battery or a pouch-type battery.

Assignees

• Samsung Sdi Co Ltd

Inventors

• Baek Woonseong
• Jung Pilho

Classifications

• H01M10/46

  Accumulators structurally combined with charging apparatus (circuits for charging H02J7/00) · CPC title

• H01M10/425 Primary

  Structural combination with electronic components, e.g. electronic circuits integrated to the outside of the casing (printed circuits H05K1/00) · CPC title

• H02J7/90

  Regulation of charging or discharging current or voltage · CPC title

• H02J7/042

  Electricity · mapped topic

• H04W4/008

  Electricity · mapped topic