NON-CONTACT CHARGING TYPE BATTERY SYSTEM, CHARGING DEVICE AND BATTERY PACK

• US 20100066304A1
• Filed: 12/12/2005
• Published: 03/18/2010
• Est. Priority Date: 12/12/2005
• Status: Abandoned Application

• Current Assignee: Panasonic Corporation (Panasonic Holdings Corporation)
• Original Assignee: Panasonic Corporation (Panasonic Holdings Corporation)
• Inventors: OSHIMI, Masanori
• Application Number:
  US12/096,964
• Publication Number:
  US 20100066304A1
• Time in Patent Office: Days
• US Class Current: 320/108
• CPC Class Codes: H01M 10/46 Accumulators structurally combined with charging apparatus circuits for charging H02J7/00
• CPC Class Codes: H02J 50/10 using inductive coupling
• CPC Class Codes: H02J 50/402 the two or more transmitting or the two or more receiving devices being integrated in the same unit, e.g. power mats with several coils or antennas with several sub-antennas
• CPC Class Codes: H02J 50/80 involving the exchange of data, concerning supply or distribution of electric power, between transmitting devices and receiving devices
• CPC Class Codes: H02J 7/00302 Overcharge protection
• CPC Class Codes: Y02E 60/10 Energy storage using batteries

Abstract

It is an object to provide a non-contact charging type battery system capable of easily charging a secondary battery requiring to control a charging voltage.

There are provided a battery pack 2 for storing a secondary battery and a charging device 1 for supplying a charging energy to the secondary battery, and the charging device 1 includes an electromagnetic energy output portion 10 for outputting the charging energy as an electromagnetic energy and a charging device side control portion 14 for controlling an operation of the electromagnetic energy output portion 10, and the battery pack 2 includes a reconverting portion 20 for inputting the electromagnetic energy and converting the electromagnetic energy into a dc power, and a battery pack side control portion 23 for controlling at least a voltage of the dc power.

Claims

1. A non-contact charging type battery system comprising a battery pack for storing a secondary battery requiring to control a charging voltage and a charging device for supplying a charging power to the secondary battery,

the charging device having an electromagnetic energy output portion for outputting the charging power as an electromagnetic energy, and

the battery pack including a reconverting portion for reconverting the electromagnetic energy into the charging power, and a control portion for controlling at least a charging voltage in the charging voltage and a charging current when the secondary battery is charged with the charging power which is obtained by the reconversion.

2. The non-contact charging type battery system according to claim 1, wherein the electromagnetic energy output portion includes a charging device side rectifying portion for rectifying a commercial power supply, a switching portion for switching a power rectified by the charging device side rectifying portion, and a charging device side coil portion for outputting the power thus switched as an electromagnetic energy, and

the reconverting portion includes a battery pack side coil portion for converting the electromagnetic energy into an ac power, and a battery pack side rectifying portion for converting the ac power into a dc power.

3. The non-contact charging type battery system according to claim 1 or 2, wherein the battery pack includes an identifying signal transmitting portion for transmitting a predetermined identifying signal, and

the charging device includes an identifying signal receiving portion for controlling the switching portion into an operation state when receiving the identifying signal.

4. A charging device for supplying a charging power to a secondary battery requiring to control a charging voltage, comprising:

a rectifying portion for rectifying a commercial power supply, a switching portion for switching a power rectified by the rectifying portion, a coil portion for outputting the power thus switched as an electromagnetic energy, and a control portion for controlling an operation of the switching portion corresponding to a voltage on both ends of the coil portion.

5. The charging device according to claim 4, wherein the control portion controls the switching portion into a continuous operation state when the voltage is lower than a predetermined threshold voltage, controls the switching portion into a stop state when the voltage is equal to or higher than the threshold voltage, and controls the switching portion into an intermittent operation state when a predetermined time passes after stopping the operation of the switching portion.

6. A battery pack for storing a secondary battery requiring to control a charging voltage, comprising:

a reconverting portion for reconverting an electromagnetic energy supplied from a charging device into a charging power, and a control portion for controlling a charging voltage and a charging current when charging the secondary battery with the charging power obtained by the reconversion.

7. The battery pack according to claim 6, further comprising a housing for integrally storing the reconverting portion, the control portion and the secondary battery.

10. The battery pack according to any of claims 6 to 9, wherein the housing and a coat of the secondary battery are formed by an insulating material.

8. A battery pack for storing a secondary battery requiring to control a charging voltage, comprising:

a reconverting portion for reconverting an electromagnetic energy supplied from a charging device into a charging power, and a control portion for controlling a charging voltage when charging the secondary battery with the charging power obtained by the reconversion.

9. The battery pack according to claim 8, further comprising a housing for integrally storing the reconverting portion, the control portion and the secondary battery.