BATTERY PACK WITH WIRELESS CHARGING AND NEAR FIELD COMMUNICATION FUNCTIONS

• US 20160190856A1
• Filed: 08/26/2015
• Published: 06/30/2016
• Est. Priority Date: 12/24/2014
• Status: Active Grant

• Current Assignee: Samsung SDI Company Limited
• Original Assignee: Samsung SDI Company Limited
• Inventors: Baek, Woonseong, Jung, Pilho
• Granted Patent: US 9,667,091 B2
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: H02J 50/10 using inductive coupling
• CPC Class Codes: H02J 50/20 using microwaves or radio frequency waves
• CPC Class Codes: H02J 7/007 Regulation of charging or discharging current or voltage
• CPC Class Codes: H02J 7/04 Regulation of charging current or voltage
• CPC Class Codes: H04W 4/80 Services using short range communication, e.g. near-field communication [NFC], radio-frequency identification [RFID] or low energy communication
• CPC Class Codes: Y02E 60/10 Energy storage using batteries

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.

Claims

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.