Industrial truck

• US 20060167609A1
• Filed: 06/10/2004
• Published: 07/27/2006
• Est. Priority Date: 06/11/2003
• Status: Abandoned Application

• Current Assignee: Still SARL, Still Gesellschaft Mit Beschrã¤Nkter Haftung (Superlift Holding SARL)
• Original Assignee: Still SARL, Still Gesellschaft Mit Beschrã¤Nkter Haftung (Superlift Holding SARL)
• Inventors: Ferreira, Paulo, Gunther, Lars, Brouart, Francois, Krupka, Daniel, Leifert, Torsten
• Application Number:
  US10/865,502
• Publication Number:
  US 20060167609A1
• Time in Patent Office: Days
• US Class Current: 701/50
• CPC Class Codes: B60L 58/12 responding to state of charge [SoC]
• CPC Class Codes: Y02P 90/60 Electric or hybrid propulsion means for production processes
• CPC Class Codes: Y02T 10/70 Energy storage systems for electromobility, e.g. batteries

Abstract

The invention relates to an industrial truck with an on-board energy reservoir (1) and at least one drive system (2) supplied with energy from it. On the industrial truck there is a device (4) to display the remaining operating time.

Claims

1. An industrial truck, comprising:

an on-board energy reservoir;

at least one drive system that is supplied with energy from the energy reservoir; and

a device to indicate the remaining operating time of the industrial truck based on the energy reservoir.

2. The industrial truck as claimed in claim 1, wherein the remaining operating time is indicated by an analog indicator.

3. The industrial truck as claimed in claim 1, wherein the remaining operating time is displayed by a digital display.

4. The industrial truck as claimed in claim 1, wherein the remaining operating time to be displayed is calculated from the content of the energy reservoir and the average power extracted during a selected period of time.

5. The industrial truck as claimed in claim 4, wherein the length of time for the calculation of the average power extracted is in the range of two hours to three days and takes both operating times and non-operating times into consideration.

6. The industrial truck as claimed in claim 4, wherein the length of time for the calculation of the average power extracted is less than one hour and takes into consideration only times the industrial truck is in operation.

7. The industrial truck as claimed in claim 1, wherein the length of time that is used for calculating the power extracted is variable.

8. The industrial truck as claimed in claim 1, wherein the remaining operating time to be displayed is calculated from the content of the energy reservoir and the maximum power that can be extracted from the energy reservoir.

9. The industrial truck as claimed in claim 1, wherein the remaining operating time to be displayed is calculated from the content of the energy reservoir and a predetermined energy consumption that has been determined for the industrial truck under typical or standardized operating conditions.

10. The industrial truck as claimed in claim 1, wherein the method used to calculate the remaining operating time is selectable by an operator.

11. The industrial truck as claimed in claim 1, wherein the method used to calculate the remaining operating time is variable as a function of an operating status of the industrial truck.

12. The industrial truck as claimed in claim 1, wherein in addition to or as an alternative to the remaining operating time, the remaining operating range can be indicated.

13. The industrial truck as claimed in claim 1, including a warning signal triggered when the remaining operating time falls below a predefined threshold.

14. The industrial truck as claimed in claim 1, wherein the energy reservoir includes a battery.

15. The industrial truck as claimed in claim 1, wherein the energy reservoir includes a tank for liquid or gas fuels.

16. The industrial truck as claimed in claim 2, wherein the analog indicator is selected from a bar indicator or a pointer display.

17. The industrial truck as claimed in claim 3, wherein the remaining operating time is displayed in units of hours and minutes.

18. The industrial truck as claimed in claim 6, wherein the length of time for the calculation of the average power extracted is less than or equal to two minutes.