Non-contact type power charging apparatus

• US 9,653,939 B2
• Filed: 02/02/2015
• Issued: 05/16/2017
• Est. Priority Date: 09/11/2014
• Status: Active Grant

• Current Assignee: Wit Co., Ltd.
• Original Assignee: Samsung Electro-Mechanics Co., Ltd. (Samsung Group)
• Inventors: Jeong, In Wha, Im, Hyung Jin, Kim, Hugh
• Primary Examiner(s): SIVJI, NIZAR N
• Application Number:
  US14/612,223
• Publication Number:
  US 20160079792A1
• Time in Patent Office: 834 Days
• CPC Class Codes: H01F 38/14 Inductive couplings for wireless supply or distribution of electric power using inductive coupling H02J50/10
• 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 7/0042 characterised by the mechanical construction

Abstract

A non-contact type power charging apparatus may include a plurality of power transmitting coils transmitting power in a non-contact scheme, a plurality of switching units connected to the power transmitting coils, respectively, to switch the power transmitted through corresponding power transmitting coils, and a switching controlling unit controlling power switching of the switching units depending on coupling coefficients between each of the power transmitting coils and at least one power receiving coil of a plurality of battery apparatuses. The battery apparatuses may have at least one power receiving coil receiving the power from the power transmitting coils to charge the power in at least one battery cell.

Claims

1. A non-contact type power charging apparatus comprising:

power transmitting coils transmitting power in a non-contact scheme;

switching units connected to the power transmitting coils to switch the power transmitted through corresponding power transmitting coils; and

a switching controlling unit controlling power switching of the switching units depending on coupling coefficients between each of the power transmitting coils and a power receiving coil of battery apparatuses receiving the power from the power transmitting coils to charge the power in a battery cell,

wherein each of the battery apparatuses comprises multiple power receiving coils and multiple battery cells, and

wherein each of the power receiving coils, of each of the battery apparatuses, corresponds to each of the battery cells of the same battery apparatus among each of the battery apparatuses, in a one-to-one scheme.

2. The non-contact type power charging apparatus of claim 1, wherein the switching controlling unit controls at least one or more of voltage levels, switching duties, switching on-off down times, and switching frequencies of the power input to each of the switching units.

3. The non-contact type power charging apparatus of claim 2, wherein the switching controlling unit differently controls the at least one or more of the voltage levels, the switching duties, the switching on-off down times, and the switching frequencies of the power input to each of the switching units.

4. The non-contact type power charging apparatus of claim 1, wherein the switching controlling unit selectively operates one of the power transmitting coils to set coupling coefficients between the corresponding power transmitting coil and power receiving coils.

5. The non-contact type power charging apparatus of claim 1, wherein the switching controlling unit selectively varies transmission power of one of the power transmitting coils to set coupling coefficients between the corresponding power transmitting coil and power receiving coils.

6. The non-contact type power charging apparatus of claim 1, further comprising:

a communicating unit configured to receive information on the power received from an outside of the power charging apparatus, wherein the switching controlling unit sets the coupling coefficients based on the information on the power from the communicating unit.

7. A non-contact type power charging apparatus comprising:

power transmitting units each comprising;

a power unit configured to supply a direct current (DC) voltage,

a switching unit configured to switch the DC voltage from the power unit,

a power transmitting coil transmitting power in a non-contact scheme depending on power switching of the switching unit, a detecting unit detecting power state variations of the power transmitting coil, and

a controlling unit configured to control the power switching of the switching unit by setting a coupling coefficient between the power transmitting coil and a power receiving coil depending on a detection result of the detecting unit,

wherein the power transmitting units control transmission power depending on coupling coefficients between the power transmitting coils of each of the power transmitting units and a power receiving coil of battery apparatuses receiving the power from the power transmitting coils to charge the power in a battery cell,

wherein each of the battery apparatuses comprises multiple receiving coils and multiple battery cells, and

wherein each of the power receiving coils, of each of the battery apparatuses, corresponds to each of the battery cells of same battery apparatus among each of the battery apparatuses, in a one-to-one scheme.

8. The non-contact type power charging apparatus of claim 7, wherein at least one or more of voltage levels, switching duties, switching on-off down times, and switching frequencies of powers input to each of the switching unit of the power transmitting units are controlled.

9. The non-contact type power charging apparatus of claim 7, wherein one of the power transmitting units is selectively operated to calculate the coupling coefficients between a corresponding power transmitting coil and power receiving coils.

10. The non-contact type power charging apparatus of claim 7, wherein the transmission power of one of the power transmitting units is selectively varied to calculate the coupling coefficients between a corresponding power transmitting coil and power receiving coils.

11. The non-contact type power charging apparatus of claim 7, wherein the detecting unit detects a power state of the power transmitting coil varied depending on power state variations of each of power receiving coils receiving the power from the power transmitting coil.