Charger including a DC-DC converter

• US 9,637,011 B2
• Filed: 03/07/2013
• Issued: 05/02/2017
• Est. Priority Date: 03/09/2012
• Status: Active Grant

• Current Assignee: Intelligent Electronic Systems
• Original Assignee: Intelligent Electronic Systems
• Inventors: Biagini, Eric
• Primary Examiner(s): Do, Truc M
• Application Number:
  US14/382,528
• Publication Number:
  US 20150134165A1
• Time in Patent Office: 1,517 Days
• CPC Class Codes: B60L 1/14 to electric lighting circuits
• CPC Class Codes: B60L 2200/42 Fork lift trucks
• CPC Class Codes: B60L 2200/44 Industrial trucks or floor conveyors
• CPC Class Codes: B60L 2210/10 DC to DC converters
• CPC Class Codes: B60L 2210/12 Buck converters
• CPC Class Codes: B60L 2210/30 AC to DC converters
• CPC Class Codes: B60L 3/003 relating to inverters
• CPC Class Codes: B60L 3/0069 relating to the isolation, e.g. ground fault or leak current
• CPC Class Codes: B60L 53/20 characterised by converters located in the vehicle
• CPC Class Codes: B60L 58/20 having different nominal voltages
• CPC Class Codes: B60L 58/21 having the same nominal voltage
• CPC Class Codes: H02J 2207/20 Charging or discharging characterised by the power electronics converter
• CPC Class Codes: H02J 7/02 for charging batteries from ac mains by converters
• CPC Class Codes: H02M 3/005 using Cuk converters
• CPC Class Codes: H02M 3/1557 Single ended primary inductor converters [SEPIC]
• 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
• 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 10/92 Energy efficient charging or discharging systems for batteries, ultracapacitors, supercapacitors or double-layer capacitors specially adapted for vehicles
• CPC Class Codes: Y02T 90/12 : Electric charging stations
• CPC Class Codes: Y02T 90/14 : Plug-in electric vehicles

Abstract

The invention relates to a charger (2) for a motor driven apparatus (8), the motor driven apparatus (8) including a battery (5) and pieces of equipment (7a, 7b, 7c), said charger (2) including: a first conversion module (3) for converting an alternating input current into a direct current having a first voltage; a second conversion module (4) for converting a direct current having a first voltage into a direct current having a second voltage that is lower than the first voltage; a switching module (6) connected to the first conversion module (3), and to the second conversion module (4), suitable for being connected to the battery (5); the switching module (6) being suitable for: in a charging mode, supplying power to the second conversion module (4) and the battery (5) via the first conversion module (3); in a use mode, supplying power to the second conversion module (4) via the battery (5); the second conversion module (4) being suitable for supplying power to the pieces of equipment (7a, 7b, 7c), and the second conversion module (4) including an SEPIC converter. The invention also relates to the motor driven apparatus including said device and to an electrical power supply method that uses said device.

Claims

1. Charging device (2) for a motorised appliance (8), the motorised appliance (8) including a battery (5) and items of equipment (7a, 7b, 7c), said charging device (2) comprising:

a first conversion module (3) adapted to convert an alternating input current into a direct current having a first voltage;

a second conversion module (4) adapted to convert adapted to a direct current having a first voltage into a direct current having a second voltage that is lower than the first voltage;

a switching module (6) connected to the first conversion module (3) and to the second conversion module (4) and adapted to be connected to the battery (5);

the switching module (6) being adapted;

in a charge mode, to supply power to the second conversion module (4) and the battery (5) via the first conversion module (3);

in a use mode, to supply power to the second conversion module (4) via the battery (5);

the second conversion module (4) being adapted to supply power to the items of equipment (7a, 7b, 7c); and

the second conversion module (4) comprising a SEPIC converter.

2. Device according to claim 1, in which the first voltage is from 24 to 500 V, preferably from 45 to 80 V;

and/or in which the second voltage is from 5 to 20 V, preferably from 10 to 15 V.

3. Device according to claim 1, in which the alternating input current has a voltage of from 80 V to 300 V, preferably from 85 to 265 V and/or a power of from 0.5 kW to 10 kW, preferably from 1 kW to 6 kW.

4. Device according to claim 1, in which the SEPIC converter has an input (11a, 11b), an output (19a, 19b) and a capacitor (15) providing capacitive isolation between the input (11a, 11b) and the output (19a, 19b), the capacitor (15) preferably having a capacitance of from 2 μ

F to 100 μ

F, and more preferably from 15 μ

F to 45 μ

F.

5. Device according to claim 1, which is incorporated into the motorised appliance (8);

and/or comprising a housing inside which the first conversion module (3), the second conversion module (4) and the switching module (6) are arranged.

6. Motorised appliance (8) including the charging device (2) according to claim 1, and also the battery (5) and the items of equipment (7a, 7b, 7c) stated in claim 1.

7. Motorised appliance (8) according to claim 6, which is a vehicle, preferably an electrically powered motor vehicle.

8. Motorised appliance (8) according to claim 6, in which the items of equipment (7a, 7b, 7c) comprise one or more items of equipment selected from a secondary battery, sensors, indicator lights, an on-board computer, lighting means and a vehicle radio.