Electric Device

• US 20100026225A1
• Filed: 03/27/2008
• Published: 02/04/2010
• Est. Priority Date: 03/29/2007
• Status: Abandoned Application

• Current Assignee: Sanyo Electric Company Limited (Panasonic Holdings Corporation)
• Original Assignee: Sanyo Electric Company Limited (Panasonic Holdings Corporation)
• Inventors: Kamei, Hiroki, Takao, Hiroshi
• Application Number:
  US12/593,509
• Publication Number:
  US 20100026225A1
• Time in Patent Office: Days
• US Class Current: 318/471
• 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 2240/425 Temperature
• CPC Class Codes: B60L 2240/427 Voltage
• CPC Class Codes: B60L 2240/429 Current
• CPC Class Codes: B60L 2240/662 Temperature
• CPC Class Codes: B60L 2240/80 Time limits
• CPC Class Codes: B60L 2250/10 by alarm
• CPC Class Codes: B60L 2250/16 by display
• CPC Class Codes: B60L 3/0046 relating to electric energy storage systems, e.g. batteries or capacitors
• CPC Class Codes: B60L 3/0061 relating to electrical machines
• CPC Class Codes: B60L 3/04 Cutting off the power supply under fault conditions protective devices and circuit arrangements in general H01H; H02H
• CPC Class Codes: B60L 50/40 using propulsion power supplied by capacitors
• CPC Class Codes: B60L 50/51 characterised by AC-motors
• CPC Class Codes: B60L 58/16 responding to battery ageing, e.g. to the number of charging cycles or the state of health [SoH]
• CPC Class Codes: B60L 58/25 by controlling the electric load
• CPC Class Codes: G05B 19/4065 Monitoring tool breakage, life or condition
• CPC Class Codes: G05B 9/02 electric
• CPC Class Codes: H01M 10/48 Accumulators combined with arrangements for measuring, testing or indicating the condition of cells, e.g. the level or density of the electrolyte constructional details of current conducting connections for detecting conditions inside cells or batteries, e.g. details of voltage sensing terminals, H01M50/569
• CPC Class Codes: H01M 2250/20 : Fuel cells in motive systems, e.g. vehicle, ship, plane
• CPC Class Codes: H01M 8/04679 : of fuel cell stacks
• CPC Class Codes: Y02E 60/10 : Energy storage using batteries
• CPC Class Codes: Y02E 60/50 : Fuel cells
• CPC Class Codes: Y02T 10/64 : Electric machine technologies in electromobility
• 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
• CPC Class Codes: Y02T 90/16 : Information or communication technologies improving the operation of electric vehicles
• CPC Class Codes: Y02T 90/40 : Application of hydrogen technology to transportation, e.g. using fuel cells

Abstract

Provided is an electric device capable of encouraging a user to perform maintenance in a forceful manner when the performance such as safety, operation efficiency or the like decreases.

In an electric device of the present invention, a control circuit controlling an operation of the actuator includes detecting means for detecting a drive condition value which varies in accordance with deterioration of one or a plurality of components forming the electric device, and output limit means for limiting an output of the actuator in accordance with the drive condition value detected by the detecting means.

Claims

1. (canceled)

2. An electric device comprising a drive part driven by an actuator and a control circuit controlling an operation of the actuator, wherein the control circuit includes detecting means for detecting a drive condition value which varies in accordance with deterioration of one or a plurality of components forming the electric device and output limit means for limiting an output of the actuator in accordance with the drive condition value detected by the detecting means, and the output limit means of the control circuit reduces a limit value of the actuator output after the drive condition value reaches a predetermined duration value from a maximum limit value to a minimum limit value.

3. The electric device according to claim 2, wherein, after the drive condition value reaches the predetermined duration value, the output limit means of the control circuit gradually reduces the limit value of the actuator output in accordance with a variation of the drive condition value from the maximum limit value to the minimum limit value.

4. The electric device according to claim 2, wherein the output limit means of the control circuit limits the actuator output by limiting an operation mode which can transit.

5. The electric device according to claim 2, wherein the actuator output is limited so that a temperature of a specified one of the components forming the electric device does not exceed a predetermined limit value, and the limit value of the component temperature decreases from a maximum limit value to a minimum limit value after the drive condition value reaches the duration value.

6. The electric device according to claim 2, wherein the electric device comprises reset means for resetting the limit value of the actuator output to the maximum limit value in accordance with conduct of maintenance.

7. The electric device according to claim 6, wherein the duration value of the drive condition value is set for each of the plurality of components forming the electric device, and the duration value of a specified component of them is updated every time the maintenance of the component is performed.

8. The electric device according to claim 2, wherein, after the drive condition value reaches the predetermined duration value, every time the actuator stops or every time a power source of the electric device is turned on, the output limit means of the control circuit reflects the limit value of the actuator output at that time in limitation of the actual actuator output.

9. The electric device according to claim 2, wherein the electric device is formed by a plurality of systems cooperating with each other, the drive condition value is data regarding a life duration of one system of the plurality of systems, the data is sent from the one system to one other system including the actuator, and the actuator output of the one other system is thereby limited.

10. An electric device comprising an electric vehicle which runs due to rotation of a motor using a battery as a power source, wherein a control circuit controlling an operation of the motor reduces a limit value of a motor output after a travel condition value regarding durability which varies along with travelling reaches a predetermined duration value from a maximum limit value to a minimum limit value.