Connecting device for an electric work vehicle

• US 20040207364A1
• Filed: 02/25/2004
• Published: 10/21/2004
• Est. Priority Date: 08/31/2001
• Status: Abandoned Application

• Current Assignee: Ettore Uguzzoni, Mauro Nervosi
• Original Assignee: Ettore Uguzzoni, Mauro Nervosi
• Inventors: Uguzzoni, Ettore, Nervosi, Mauro
• Application Number:
  US10/487,676
• Publication Number:
  US 20040207364A1
• Time in Patent Office: Days
• US Class Current: 320/128
• CPC Class Codes: B60L 2200/42 Fork lift trucks
• CPC Class Codes: B60L 2210/30 AC to DC converters
• CPC Class Codes: B60L 2240/36 Temperature of vehicle components or parts
• CPC Class Codes: B60L 2240/529 Current
• 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 50/52 characterised by DC-motors
• CPC Class Codes: B60L 53/16 Connectors, e.g. plugs or sockets, specially adapted for charging electric vehicles
• CPC Class Codes: B60L 53/65 involving identification of vehicles or their battery types
• CPC Class Codes: B60L 58/15 Preventing overcharging
• 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 10/72 Electric energy management in electromobility
• 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
• CPC Class Codes: Y02T 90/167 Systems integrating technologies related to power network operation and communication or information technologies for supporting the interoperability of electric or hybrid vehicles, i.e. smartgrids as interface for battery charging of electric vehicles [EV] or hybrid vehicles [HEV]
• CPC Class Codes: Y04S 30/14 Details associated with the interoperability, e.g. vehicle recognition, authentication, identification or billing

Abstract

A connecting device for an electric work vehicle, having a supporting body (8) made of insulating material and housing at least a first and a second supply cable (10, 11)connectable to a battery (5) and selectively connectable to a battery charger (7) and to at least one user device (3). The connecting device also has an electronic control circuit (12) connected to the first and second supply cable (10, 11); and a current transducer (13) for detecting a current flowing in the first and second supply cable (10, 11).

Claims

1. ) A connecting device for an electric work vehicle, comprising a supporting body (8) made of insulating material and housing at least a first and a second supply cable (10, 11) connectable to a battery (5);

said first and second supply cable (10, 11) also being selectively connectable to a battery charger (7) and to at least one user device (3);

an electronic control circuit (12) connected to said first and second supply cable (10, 11); and

current transducer means (13) for detecting a current flowing in said first and second supply cable (10, 11), characterized in that said electronic control circuit (12) and said current transducer means (13)are housed in a seat (15) on said supporting body (8), and in that said supporting body (8) is configured for engagement with connecting elements (17a, 17b) of a connector, for connecting said battery charger (7) and said at least one user device (3) to said battery (5).

2. ) A device as claimed in claim 1, characterized in that said current transducer means (3) comprise a resistive element (16) located in series with said first or said second supply cable (10, 11);

said resistive element (16) having, at opposite ends, a first and a second detecting contact (18, 19) connected to said electronic control circuit (12).

3. ) A device as claimed in any one of the foregoing claims, characterized in that said electronic control circuit (12) also comprises a current detecting circuit (28) connected to said first and second detecting contact (18, 19) of said current transducer means (13) and supplying a first control signal (S_I);

a voltage detecting circuit (29) supplying a second control signal (S_V) related to a voltage (V_B) between said first and second supply cable (10, 11); and

temperature sensing means (30).

4. ) A device as claimed in claim 3, characterized in that said electronic control circuit (12) comprises numeric processing means (23) connected to said current detecting circuit (28) and to said voltage detecting circuit to receive said first and second control signal (S_I, S_V), and to supply a number of enabling signals (EN1, EN2);

memory means (25) connected to said numeric processing means (23); and

serial communication means (26).

5. ) A system for supplying an electric work vehicle, and comprising and electric motor, a battery (5), a battery charger (7), and a connecting device (6) for connecting said battery (5) alternatively to said user device (3) and to said battery charger (7);

characterized in that said connecting device (6) is as claimed in any one of claims 1 to 4.