Stationary charging system

• US 8,994,329 B2
• Filed: 10/01/2012
• Issued: 03/31/2015
• Est. Priority Date: 10/05/2011
• Status: Active Grant

• Current Assignee: Nichicon Corporation
• Original Assignee: Nichicon Corporation
• Inventors: Ohkuma, Shigeo, Mitsuya, Takamasa, Tachizaki, Shinsuke
• Primary Examiner(s): Fantu, Yalkew
• Application Number:
  US13/825,897
• Publication Number:
  US 20140292271A1
• Time in Patent Office: 911 Days
• Field of Search: 320/109
• US Class Current: 320/109
• CPC Class Codes: B60L 3/00 Electric devices on electrically-propelled vehicles for safety purposes; Monitoring operating variables, e.g. speed, deceleration or energy consumption methods or circuit arrangements for monitoring or controlling batteries or fuel cells B60L58/00
• 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 53/30 Constructional details of charging stations
• CPC Class Codes: B60L 53/305 Communication interfaces
• CPC Class Codes: B60L 53/62 in response to charging parameters, e.g. current, voltage or electrical charge
• CPC Class Codes: B60L 58/00 Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles
• CPC Class Codes: H01M 10/44 Methods for charging or discharging circuits for charging H02J7/00
• CPC Class Codes: H02J 2310/40 The network being an on-board power network, i.e. within a vehicle
• CPC Class Codes: H02J 7/0018 using separate charge circuits
• CPC Class Codes: H04L 2012/40215 Controller Area Network CAN
• 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
• CPC Class Codes: Y02T 90/16 Information or communication technologies improving the operation of electric vehicles

Abstract

A stationary charging system for charging a battery mounted in a vehicle using direct-current charging power includes a power unit for generating direct-current charging power, a plurality of charging units (CHG1 to CHG9) that constitute the power unit, a control unit (MCU), and a first CAN communication line for allowing data exchange between the control unit and the charging units, each of the charging units receives control command data transmitted by the control unit, and creates charging unit status data, and the control unit, and creates charging unit status data, and the control unit divides the charging units into charging unit groups 4-1, 4-2, and 4-3, and transmits the control command data at varying times, whereby the charging unit status data is received at varying times.

Claims

1. A stationary charging system for charging a battery mounted in a vehicle using direct-current charging power generated on the basis of alternating-current input power, the system comprising:

a power unit for generating the direct-current charging power on the basis of the alternating-current input power;

a plurality of charging units that constitute the power unit;

a control unit for controlling the charging units; and

a first CAN communication line for allowing data exchange between the control unit and the charging units, wherein,

each of the charging units receives control command data transmitted by the control unit, and creates charging unit status data concerning the status of the charging unit, and

the control unit divides the charging units into a plurality of charging unit groups, and sets times at which to transmit the control command data such that transmission to at least one of the charging unit groups occurs at a different time from transmission to the other charging unit groups, whereby the charging unit status data from the charging units is received at varying times.

2. The stationary charging system according to claim 1, wherein the control unit transmits the control command data to the charging unit groups at varying times for each of the charging unit groups, whereby the charging unit status data from the charging unit groups is received at varying times for each of the charging unit groups.

3. The stationary charging system according to claim 1, further comprising a second CAN communication line for allowing data exchange between the control unit and the vehicle, wherein,

the control unit determines the gap between times at which to transmit control command data such that the control unit receives the charging unit status data from the charging units, creates power unit status data concerning the status of the power unit on the basis of the charging unit status data, and completes transmission of the power unit status data to the vehicle, within a predetermined period of time after the control unit receives vehicle command data transmitted by the vehicle via the second CAN communication line.

4. The stationary charging system according to claim 3, wherein,

the charging unit status data includes fault information for the charging units, and

the power unit status data includes fault information for the power unit created on the basis of the fault information for the charging units.

5. The stationary charging system according to claim 1, wherein,

the alternating-current input power is three-phase alternating-current power, and

each of the charging unit groups consists of three charging units to which any one of the three phases of the alternating-current power is input.