Charging device

• US 9,667,080 B2
• Filed: 09/19/2013
• Issued: 05/30/2017
• Est. Priority Date: 09/19/2012
• Status: Active Grant

• Current Assignee: Panasonic Automotive Systems Company of America (Panasonic Holdings Corporation)
• Original Assignee: Panasonic Intellectual Property Management Co., Ltd. (Panasonic Holdings Corporation)
• Inventors: Ishii, Toshiki, Hirai, Takuya
• Primary Examiner(s): WILLIAMS, ARUN C
• Application Number:
  US14/429,412
• Publication Number:
  US 20150236542A1
• Time in Patent Office: 1,349 Days
• Field of Search: 320107
• CPC Class Codes: B60L 2270/147 electro magnetic [EMI]
• CPC Class Codes: B60L 53/122 Circuits or methods for driving the primary coil, e.g. supplying electric power to the coil
• CPC Class Codes: H01M 10/44 Methods for charging or discharging circuits for charging H02J7/00
• CPC Class Codes: H01M 2220/20 Batteries in motive systems, e.g. vehicle, ship, plane
• CPC Class Codes: H02J 2207/20 Charging or discharging characterised by the power electronics converter
• CPC Class Codes: H02J 2310/48 for electric vehicles [EV] or hybrid vehicles [HEV]
• CPC Class Codes: H02J 7/00 Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
• CPC Class Codes: H02J 7/02 for charging batteries from ac mains by converters
• CPC Class Codes: H02M 1/126 using passive filters
• CPC Class Codes: Y02E 60/10 Energy storage using batteries
• CPC Class Codes: Y02T 10/70 Energy storage systems for electromobility, e.g. batteries
• CPC Class Codes: Y02T 10/7072 Electromobility specific charging systems or methods for batteries, ultracapacitors, supercapacitors or double-layer capacitors
• CPC Class Codes: Y02T 90/12 Electric charging stations
• CPC Class Codes: Y02T 90/14 Plug-in electric vehicles

Abstract

The purpose of the invention is to stabilize the output of a charging device by removing noise components back to the output side of the charging device. The charging device (100) charges a secondary battery (30) by using power supplied from an external power supply (20). A charging unit (102) has a primary coil (150) and a secondary coil (151), converts the power supplied from the external power supply (20) into a charging power, and supplies the charging power to the secondary battery (30). A noise removing unit (103) removes noise components included in the charging power that is supplied to the secondary battery (30) by the charging unit (102).

Claims

1. A charging apparatus that charges a storage battery using power supplied from an external power source, the charging apparatus comprising:

a charging section that converts power supplied from the external power source into charging power and supplies the charging power to the storage battery;

a pair of output charging paths that transmit the charging power to the storage battery from the charging section; and

a noise removal section that removes a noise component included in the charging power to be supplied to the storage battery by the charging section, wherein;

the charging section includes a primary coil that receives power supplied from the external power source, and a secondary coil that is in an electrically floating state together with the storage battery and supplies, as the charging power, power induced by being coupled electromagnetically to the primary coil to the storage battery; and

the noise removal section includes a Y-capacitor provided at a connecting line that connects each of the pair of output charging paths to a ground, and removes a noise component included in the charging power to be supplied to the storage battery by the secondary coil.

2. The charging apparatus according to claim 1, wherein:

the noise removal section includes a resistor inserted in series into the connecting line between the Y-capacitor and the pair of output charging paths.

3. A vehicle including the charging apparatus according to claim 1.

4. The charging apparatus according to claim 1, wherein:

the Y-capacitor has a capacitance value capable of removing the noise component that varies depending on a length of the wiring of at least one of the output charging paths.