Charging device that reduces an amount of noise flowing through a charging system in a vehicle

• US 10,322,639 B2
• Filed: 07/31/2018
• Issued: 06/18/2019
• Est. Priority Date: 06/11/2013
• 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: Chizuwa, Shuhei
• Primary Examiner(s): Fantu, Yalkew
• Application Number:
  US16/050,365
• Publication Number:
  US 20180334041A1
• Time in Patent Office: 322 Days
• Field of Search: 320109
• CPC Class Codes: B60L 2270/147 electro magnetic [EMI]
• CPC Class Codes: B60L 53/11 DC charging controlled by the charging station, e.g. mode 4
• CPC Class Codes: B60L 53/14 Conductive energy transfer
• CPC Class Codes: B60L 58/10 for monitoring or controlling batteries
• CPC Class Codes: H02J 2207/20 Charging or discharging characterised by the power electronics converter
• CPC Class Codes: H02J 7/00 Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
• CPC Class Codes: H02J 7/0042 characterised by the mechanical construction
• CPC Class Codes: H02J 7/02 for charging batteries from ac mains by converters
• 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

Provided are a charging device and a vehicle capable of reducing the amount of noise flowing into a quick-charging facility. The pair of charging lines connecting the quick-charging facility (20) to an onboard battery (30) are referred to as quick-charging lines, and each of these quick-charging lines is provided with a relay (16-1, 16-2). Each relay (16-1, 16-2) is used to switch the current flowing in the respective quick-charging line on and off, the current being switched on during quick-charge and being switched off during normal charging. Each quick-charging line has a Y-capacitor (17) connected thereto closer to a QC port (15) than the respective relay (16-1, 16-2).

Claims

1. A charging apparatus comprising:

a first line for supplying direct-current power supplied from an external direct-current power source to a battery, the first line having one end being electrically connected to a second line electrically connecting the battery and a component which becomes a noise source when the component operates during charging from the external direct-current power source to the battery, and having the other end being electrically connected to the external direct-current power source; and

a first noise filter that is disposed on the first line,

wherein the second line is electrically connected to one end of a third line having the other end being electrically connected to an external alternating-current power source, and the third line is provided with an AC/DC converter and a second noise filter, the second noise filter being disposed on the external alternating-current power source side with respect to the AC/DC converter of the third line.

2. The charging apparatus according to claim 1, wherein the first line is a quick-charging line.

3. The charging apparatus according to claim 1, wherein the third line is a normal charging line.

4. The charging apparatus according to claim 1, wherein the first noise filter is a Y capacitor.

5. The charging apparatus according to claim 4, wherein the second noise filter is a Y capacitor.

6. The charging apparatus according to claim 5, wherein the AC/DC converter comprises a transformer.

7. The charging apparatus according to claim 6, further comprising:

a relay that is disposed on the first line and switches on and off a current flowing through the first line, wherein

the first noise filter is disposed on the external direct-current power source side with respect to the relay,

the first noise filter is connected to the vehicle body ground at a neutral point and reduces noise from the noise source to a certain current value or lower and causes the noise to flow to the vehicle body ground,

the second noise filter is grounded to the vehicle body ground at a neutral point and reduce noise that flows into the external alternating-current power source from the AC/DC converter to a certain current value or lower and causes the noise to flow to the vehicle body ground, and

the relay is switched on during power supply from the external direct-current power source to the battery, and is switched off during power supply from the external alternating-current power source to the battery.

8. The charging apparatus according to claim 7, wherein

the noise source comprises a DC/DC converter and an air conditioning compressor.

14. The charging apparatus according to claim 1, wherein the first noise filter is an X capacitor.

15. The charging apparatus according to claim 1, wherein the first noise filter is a coil.

16. The charging apparatus according to claim 1, wherein the first noise filter is a ferrite.

9. A vehicle comprising:

a first line for supplying direct-current power supplied from a external direct-current power source to a battery, the first line having one end being electrically connected to a second line electrically connecting the battery and a component which becomes a noise source when the component operates during charging form the external direct-current power source to the battery, and having the other end being electrically connected to the external direct-current power source; and

a first noise filter that is disposed on the first line,

wherein the second line is electrically connected to one end of a third line having the other end being electrically connected to an external alternating-current power source, and the third line is provided with an AC/DC converter and a second noise filter, the second noise filter being disposed on the external alternating-current power source side with respect to the AC/DC converter of the third line.

10. The vehicle according to claim 9, wherein the first noise filter is a Y capacitor.

11. The vehicle according to claim 10, wherein the second noise filter is a Y capacitor.

12. The vehicle according to claim 11, wherein the AC/DC converter comprises a transformer.

13. The vehicle according to claim 12, further comprising:

a relay that is disposed on the first line and switches on and off a current flowing through the first line, wherein

the first noise filter is disposed on the external direct-current power source side with respect to the relay,

the first noise filter is connected to the vehicle body ground at a neutral point and reduces noise from the noise source to a certain current value or lower and causes the noise to flow to the vehicle body ground,

the second noise filter is grounded to the vehicle body ground at a neutral point and reduce noise that flows into the external alternating-current power source from the AC/DC converter to a certain current value or lower and causes the noise to flow to the vehicle body ground, and

the relay is switched on during power supply from the external direct-current power source to the battery, and is switched off during power supply from the external alternating-current power source to the battery.

17. The vehicle according to claim 9, wherein the first noise filter is an X capacitor.

18. The vehicle according to claim 9, wherein the first noise filter is a coil.

19. The vehicle according to claim 9, wherein the first noise filter is a ferrite.