Control system in electric vehicle

• US 5,734,238 A
• Filed: 10/07/1996
• Issued: 03/31/1998
• Est. Priority Date: 03/04/1994
• Status: Expired due to Fees

• Current Assignee: Honda Giken Kogyo Kabushiki Kaisha (Honda Motor Company)
• Original Assignee: Honda Giken Kogyo Kabushiki Kaisha (Honda Motor Company)
• Inventors: Usuda, Masafumi, Yanagisawa, Shigeru, Ito, Hisahiro, Shimane, Iwao
• Primary Examiner(s): Sircus, Brian
• Application Number:
  US08/726,683
• Time in Patent Office: 540 Days
• Field of Search: 318/139-147, 318/151-158, 364/423.098, 364/423.099, 364/424.12-426.46, 120/178, 120/179, 120/60, 120/65.1
• US Class Current: 318/139
• CPC Class Codes: B60K 1/04 of the electric storage means for propulsion exchanging batteries for electric propulsion of vehicles B60L53/80; for auxiliary purposes only B60R16/04; supplying batteries to, or removing batteries from, vehicles B60S5/06
• CPC Class Codes: B60L 1/003 to auxiliary motors, e.g. for pumps, compressors
• CPC Class Codes: B60L 15/2009 for braking
• CPC Class Codes: B60L 15/2045 for optimising the use of energy
• CPC Class Codes: B60L 2210/12 Buck converters
• CPC Class Codes: B60L 2240/12 Speed
• CPC Class Codes: B60L 2240/28 Door position
• CPC Class Codes: B60L 2240/36 Temperature of vehicle components or parts
• CPC Class Codes: B60L 2240/421 Speed
• CPC Class Codes: B60L 2240/423 Torque
• CPC Class Codes: B60L 2240/486 Operating parameters
• CPC Class Codes: B60L 2240/545 Temperature
• CPC Class Codes: B60L 2240/547 Voltage
• CPC Class Codes: B60L 2240/549 Current
• CPC Class Codes: B60L 2240/80 Time limits
• CPC Class Codes: B60L 2250/16 by display
• CPC Class Codes: B60L 2250/26 by pedal actuation
• CPC Class Codes: B60L 3/0061 relating to electrical machines
• CPC Class Codes: B60L 3/108 whilst braking, i.e. ABS
• CPC Class Codes: B60L 50/51 characterised by AC-motors
• CPC Class Codes: B60L 50/66 : Arrangements of batteries
• CPC Class Codes: B60L 58/10 : for monitoring or controlling batteries
• CPC Class Codes: B60L 58/20 : having different nominal voltages
• CPC Class Codes: B60L 7/14 : for vehicles propelled by ac motors
• CPC Class Codes: B60L 7/26 : Controlling the braking effect
• CPC Class Codes: B60T 13/586 : the retarders being of the electric type
• CPC Class Codes: Y02T 10/70 : Energy storage systems for electromobility, e.g. batteries
• CPC Class Codes: Y02T 10/72 : Electric energy management in electromobility

Abstract

A control system in an electric vehicle includes a power driver control device for controlling a driving system including the electric motor, a management control device for controlling a power distributing system including the battery, a brake control device for controlling a braking system including the brake device. These control devices are disposed in a distributed arrangement in the vehicle body. A power train collective-control device administers the controlling of a transmission system; collectively controls and monitors the power driver control device, the management control device, and the brake control device, and also backs up any of these control devices which is out of order, i.e., has developed trouble. Thus, it is possible to provide improvements in processing speed and reliability of the control system in the electric vehicle.

Claims

1. A control system in an electric vehicle having a battery, a motor driven by said battery to cause travel of the vehicle, and a brake device for braking the vehicle, said control system comprising:

a power driver control device for controlling a driving system including the motor;

a management control device for controlling a power distributing system including the battery; and

a brake control device for controlling a braking system including the brake device,

said power driver control device, said management control device and said brake control device each being located in a physically location in the electric vehicle substantially spaced from each of the other said devices and collectively controlled and monitored by a separate power train collective-control device.

2. A control system in an electric vehicle according to claim 1, wherein said power driver control device, said management control device and said brake control device are mutually monitored by said power train collective-control device for detecting a trouble in any of the three said control devices through communication with said power train collective-control device.

3. A control system in an electric vehicle according to claim 1, wherein said power driver control device, said management control device and said brake control device also are in a physically spaced and distributed manner in the electrical vehicle from said power train collective-control device.

4. A control system in an electric vehicle according to claim 1, wherein said power driver control device, said management control device, said brake control device and said power train collective-control device each have a separate central processing unit.

5. A control system in an electric vehicle according to claim 1, wherein said power driver control device, said management control device and said brake control device each separately control various constituents of the operations of said driving system, power distributing system and braking system, respectively.

6. A control system in an electric vehicle having a battery, a motor driven by said battery to cause travel of the vehicle, and a brake device for braking the vehicle, said control system comprising:

a power driver control device mounted on one side of the electric vehicle for controlling a driving system including the motor;

a management control device mounted in a central location on the electric vehicle for controlling a power distributing system including the battery; and

a brake control device mounted in a front portion of the electric vehicle for controlling a braking system including the brake device,

said power driver control device, said management control device and said brake control device being mounted in substantially spaced locations in the electric vehicle and collectively controlled and monitored by a power train collective-control device.

7. A control system in an electric vehicle according to claim 6, wherein said power driver control device, said management control device and said brake control device are mutually monitored by said power train collective-control device for detecting a trouble in any of the three said control devices through communication with said power train collective-control device.

8. A control system in an electric vehicle according to claim 6, wherein said power train collective-control device is mounted on a side of the electric vehicle opposite said one side, and said power driven control device, said management control device and said brake control device also are substantially spaced in the electrical vehicle from said power train collective-control device.

9. A control system in an electric vehicle according to claim 6, wherein said power driver control device, said management control device, said brake control device and said power train collective-control device each have a separate central processing unit.

10. A control system in an electric vehicle according to claim 6, wherein said power driver control device, said management control device and said brake control device each separately control various constituents of the operations of said driving system, power distributing system and braking system, respectively.

11. A control system in an electric vehicle having a battery, and a motor driven by said battery to cause travel of the vehicle, said control system comprising;

a power driver control device for controlling a driving system including a power driver unit and the motor;

a management control device for controlling a power distributing system including a downverter and the battery;

a power train collective-control device for collectively controlling and monitoring said power driver control device and said management control device;

said power driver control device, said power driver unit, said management control device, said downverter and said power train collective-control device each being a physically separate component of the control system and mounted on the electric vehicle at separate locations;

said power driver unit being mounted between said power driver control device and said management control device; and

said downverter being mounted between said power train collective-control device and said management control device.

12. A control system in an electric vehicle according to claim 11, wherein said management control device is mounted in a central portion of the electric vehicle, said power driver control device is mounted on one side of the electric vehicle, and said power train collective-control device is located on an opposite side of the electric vehicle.

13. A control system in an electric vehicle according to claim 11, wherein the control system includes a brake control system having a brake control device mounted at a front of the electric vehicle substantially spaced from all of said separate components.