Feed system, feed unit, and electronic unit

• US 10,461,567 B2
• Filed: 05/23/2018
• Issued: 10/29/2019
• Est. Priority Date: 08/10/2011
• Status: Active Grant

• Current Assignee: Sony Corporation (Sony Group Corp.)
• Original Assignee: Sony Corporation (Sony Group Corp.)
• Inventors: Uramoto, Yoichi
• Primary Examiner(s): Johnson, Ryan
• Application Number:
  US15/987,296
• Publication Number:
  US 20180269711A1
• Time in Patent Office: 524 Days
• CPC Class Codes: H01M 10/425 Structural combination with electronic components, e.g. electronic circuits integrated to the outside of the casing printed circuits H05K1/00
• CPC Class Codes: H01M 10/46 Accumulators structurally combined with charging apparatus circuits for charging H02J7/00
• CPC Class Codes: H01M 2010/4278 Systems for data transfer from batteries, e.g. transfer of battery parameters to a controller, data transferred between battery controller and main controller
• CPC Class Codes: H02J 50/05 using capacitive coupling
• CPC Class Codes: H02J 50/10 using inductive coupling
• CPC Class Codes: H02J 50/12 of the resonant type
• CPC Class Codes: H02J 50/60 responsive to the presence of foreign objects, e.g. detection of living beings
• 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 7/00036 Charger exchanging data with battery
• CPC Class Codes: H02J 7/00045 Authentication, i.e. circuits for checking compatibility between one component, e.g. a battery or a battery charger, and another component, e.g. a power source
• CPC Class Codes: Y02E 60/10 Energy storage using batteries

Abstract

A feed system has a first electronic unit, a second electronic unit, and a feed unit. The first electronic unit and the feed unit are separated. The feed unit transmits power to a power reception section of the second electronic unit based upon result information of a first authentication between the first electronic unit and the second electronic unit. The feed unit performs a second authentication on the second electronic unit in conjunction with power transmission.

Claims

1. A power transmitter, comprising:

a power transmitting unit configured to detect a power receiving unit to be charged before the power transmitting unit performs pre-charging of the power receiving unit and to receive a charging request from the power receiving unit after the power transmitting unit performs the pre-charging of the power receiving unit,

wherein the power transmitting unit is configured to transmit power to the power receiving unit during main charging based upon result information of a first authentication between the power transmitting unit and the power receiving unit.

2. The power transmitter according to claim 1, wherein power transmission circuitry in the power transmitting unit includes a power transmission coil and a power transmission capacitor element.

3. The power transmitter according to claim 2, wherein the power transmission capacitor element is a variable capacitor.

4. The power transmitter according to claim 2, wherein the power transmission circuitry is electrically connected to a power transmitting control section.

5. The power transmitter according to claim 4, wherein the power transmitting control section and the power transmission circuitry are electrically connected to an AC power source.

6. The power transmitter according to claim 4, wherein the power transmitting control section is electrically connected to a detection section.

7. A power receiver, comprising:

a power receiving unit configured to;

receive power from a power transmitting unit during pre-charging,

send a charging request to the power transmitting unit before performing a first authentication between the power transmitting unit and the power receiving unit, and

receive power from the power transmitting unit during main charging after performing the first authentication between the power transmitting unit and the power receiving unit.

8. The power receiver according to claim 7, wherein power receiving circuitry in the power receiving unit includes a power receiving coil and a power receiving capacitor element.

9. The power receiver according to claim 8, wherein the power receiving circuitry is electrically connected to a power receiving control section.

10. The power receiver according to claim 9, wherein a charging section and the power receiving circuitry are electrically connected to the power receiving control section.

11. A power transmitting system, comprising:

a power transmitting unit configured to detect a power receiving unit to be charged before the power transmitting unit performs pre-charging of the power receiving unit; and

a power receiving unit configured to send a charging request to the power transmitting unit and receive power from the power transmitting unit during main charging after the power receiving unit performs a first authentication between the power transmitting unit and the power receiving unit.

12. The power transmitting system according to claim 11, wherein power transmission circuitry in the power transmitting unit includes a power transmission coil and a power transmission capacitor element.

13. The power transmitting system according to claim 12, wherein the power transmission capacitor element is a variable capacitor.

14. The power transmitting system according to claim 12, wherein the power transmission circuitry is electrically connected to a power transmitting control section.

15. The power transmitting system according to claim 14, wherein the power transmitting control section and the power transmission circuitry are electrically connected to an AC power source.

16. The power transmitting system according to claim 14, wherein the power transmitting control section is electrically connected to a detection section.

17. The power transmitting system according to claim 11, wherein power receiving circuitry in the power receiving unit includes a power receiving coil and a power receiving capacitor element.

18. The power transmitting system according to claim 17, wherein the power receiving circuitry is electrically connected to a power receiving control section.

19. The power transmitting system according to claim 18, wherein a charging section and the power receiving circuitry are electrically connected to the power receiving control section.

20. The power transmitting system according to claim 18, wherein a battery is electrically connected to the charging section.