Energy conversion system, recharging assembly by induction and methods for transmitting and receiving associated data

• US 9,731,612 B2
• Filed: 10/03/2014
• Issued: 08/15/2017
• Est. Priority Date: 10/09/2013
• Status: Active Grant

• Current Assignee: Schneider Electric Industries SAS (Schneider Electric SE)
• Original Assignee: Schneider Electric Industries SAS (Schneider Electric SE)
• Inventors: Herriot, Yann, Ladas, Dimitrios, Dorbais, Lionel
• Primary Examiner(s): Rodas, Richard Isla
• Assistant Examiner(s): Bui, Dung V
• Application Number:
  US14/505,607
• Publication Number:
  US 20150097522A1
• Time in Patent Office: 1,047 Days
• Field of Search: 320108
• CPC Class Codes: B60L 2210/30 AC to DC converters
• CPC Class Codes: B60L 2210/40 DC to AC converters
• CPC Class Codes: B60L 53/12 Inductive energy transfer
• CPC Class Codes: B60L 53/126 Methods for pairing a vehicle and a charging station, e.g. establishing a one-to-one relation between a wireless power transmitter and a wireless power receiver
• CPC Class Codes: B60L 53/22 Constructional details or arrangements of charging converters specially adapted for charging electric vehicles
• CPC Class Codes: H02J 50/12 of the resonant type
• CPC Class Codes: H02J 50/90 involving detection or optimisation of position, e.g. alignment
• CPC Class Codes: H02J 7/00 Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
• CPC Class Codes: H02J 7/00712 the cycle being controlled or terminated in response to electric parameters
• CPC Class Codes: H04L 67/12 specially adapted for proprietary or special-purpose networking environments, e.g. medical networks, sensor networks, networks in vehicles or remote metering networks
• 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

Abstract

The energy conversion system comprises a primary and a secondary modules. The primary module includes input terminals, a primary winding, and a primary capacitor connected to the primary winding and the input terminals. The secondary module includes output terminals, a secondary winding and a secondary capacitor connected to the secondary winding and the output terminals. A current is induced in the secondary winding when the primary and secondary windings are magnetically coupled, the current received between the input terminals flowing through the primary winding.

The secondary module comprises a secondary switch electrically connected to the secondary capacitor and the secondary winding, and means for controlling the secondary switch, between a first configuration wherein the current induced in the secondary winding flows up to the output terminals, and a second configuration wherein said induced current flows in a closed loop through the secondary winding and the secondary capacitor.

Claims

1. An electric energy conversion system, comprising a primary module and a secondary module,

the primary module including two input terminals capable of receiving an electric current, a primary winding, and a primary capacitor connected to the primary winding and the input terminals,

the secondary module including two output terminals, a secondary winding, and a secondary capacitor connected to the secondary winding and the output terminals,

the primary winding being configured to induce a current in the secondary winding when the primary winding and the secondary winding are magnetically coupled and a current is received between the input terminals of the primary winding, wherein

the secondary module further comprises a secondary switch electrically connected to the secondary capacitor and to the secondary winding, and circuitry configured to control the secondary switch, the secondary switch being able to switch, reversibly, between a first configuration in which the current induced in the secondary winding flows to the output terminals, and a second configuration in which said induced current flows in a closed loop through the secondary winding and the secondary capacitor without being delivered to the output terminals,

when the primary module generates an electric pulse through the primary winding while the secondary switch is in the second configuration, the primary module is configured to detect presence of the secondary module by detecting a number of resonance frequencies of a current flowing in the primary winding.

2. The conversion system according to claim 1, wherein the secondary switch is connected in parallel with the secondary winding and the secondary capacitor connected in series on the one hand, and with the output terminals on the other hand.

3. The conversion system according to claim 1, wherein the secondary switch is connected in series between one of the output terminals and one end of the secondary winding, the secondary capacitor being connected in parallel with the secondary winding on the one hand, and with the output terminals on the other hand.

4. The conversion system according to claim 1, wherein the conversion system is reversible, the secondary winding being configured to induce a current in the primary winding when the primary winding and the secondary winding are magnetically coupled and a current received between the output terminals flows through the secondary winding,

wherein the primary module further comprises a primary switch electrically connected to the primary capacitor and to the primary winding, and circuitry configured to control the primary switch, the primary switch being able to switch, reversibly, between a third configuration, in which the current induced in the primary winding flows to the input terminals, and a fourth configuration, in which said induced current flows in a closed loop through the primary winding and the primary capacitor without being delivered to the input terminals.

5. The conversion system according to claim 4, wherein the primary switch is connected in parallel with the primary winding and the primary capacitor connected in series on the one hand, and with the input terminals on the other hand.

6. The conversion system according to claim 4, wherein the primary switch is connected in series between one of the input terminals and one end of the primary winding, the primary capacitor being connected in parallel with the primary winding on the one hand, and with the input terminals on the other hand.

7. The conversion system according to claim 1, wherein the conversion system is configured to convert one direct energy into another direct energy,

wherein the primary module includes an inverter connected between the input terminals and the primary winding, and

the secondary module including a rectifier connected between the secondary winding and the output terminals.

8. An induction recharging assembly for an electric battery, the assembly comprising an induction recharging device for recharging by induction and an electric vehicle, the electric vehicle including the electric battery,

wherein the induction recharging assembly comprises an energy conversion system according to claim 4, the induction recharging device including the primary module, the electric vehicle including the secondary module, the input terminals being connectable to an electricity source and the output terminals being connectable to the electric battery.

9. A method for transmitting data via a transmission module to a receiving module, within an induction recharging assembly for an electric battery, the assembly including a primary module and a secondary module,

the primary module including two input terminals capable of receiving an electric current, a primary winding, and a primary capacitor connected to the primary winding and the input terminals,

the secondary module including two output terminals, a secondary winding, and a secondary capacitor connected to the secondary winding and the output terminals,

the primary winding being configured to induce a current in the secondary winding when the primary winding and the secondary winding are magnetically coupled and a current is received between the input terminals of the primary winding, wherein

the secondary module further comprises a secondary switch electrically connected to the secondary capacitor and to the secondary winding, and circuitry configured to control the secondary switch, the secondary switch being able to switch, reversibly, between a first configuration in which the current induced in the secondary winding flows to the output terminals, and a second configuration in which said induced current flows in a closed loop through the secondary winding and the secondary capacitor without being delivered to the output terminals,

wherein the primary module further comprises a primary switch electrically connected to the primary capacitor and to the primary winding, and circuitry configured to control the primary switch, the primary switch being able to switch, reversibly, between a third configuration, in which the current induced in the primary winding flows to the input terminals, and a fourth configuration, in which said induced current flows in a closed loop through the primary winding and the primary capacitor without being delivered to the input terminals,

wherein the method is carried out by the transmission module chosen from among the primary module and the secondary module and comprises:

controlling the switch of the receiving module among the secondary switch and the primary switch, in the corresponding configuration from among the second configuration and the fourth configuration,

detecting an electric signal induced in the winding of the transmission module following the generation of at least one electric pulse between the terminals of the receiving module, the receiving module corresponding to the other module among the primary module and the secondary module, said induced signal flowing in the closed loop through the winding and the capacitor of the transmission module.

10. A method for a receiving module to receive data from a transmitting module, within an induction recharging assembly for an electric battery, the assembly including a primary module and a secondary module,

the primary module including two input terminals capable of receiving an electric current, a primary winding, and a primary capacitor connected to the primary winding and the input terminals,

the secondary module including two output terminals, a secondary winding, and a secondary capacitor connected to the secondary winding and the output terminals,

the primary winding being configured to induce a current in the secondary winding when the primary winding and the secondary winding are magnetically coupled and a current is received between the input terminals of the primary winding, wherein

the secondary module further comprises a secondary switch electrically connected to the secondary capacitor and to the secondary winding, and circuitry configured to control the secondary switch, the secondary switch being able to switch, reversibly, between a first configuration in which the current induced in the secondary winding flows to the output terminals, and a second configuration in which said induced current flows in a closed loop through the secondary winding and the secondary capacitor without being delivered to the output terminals,

wherein the primary module further comprises a primary switch electrically connected to the primary capacitor and to the primary winding, and circuitry configured to control the primary switch, the primary switch being able to switch, reversibly, between a third configuration, in which the current induced in the primary winding flows to the input terminals, and a fourth configuration, in which said induced current flows in a closed loop through the primary winding and the primary capacitor without being delivered to the input terminals,

wherein the method is carried out by the receiving module chosen from among the primary module and the secondary module and comprises:

generating at least one electric pulse between the terminals of the receiving module, and

performing a frequency analysis of an electric signal flowing through the winding of the receiving module following the pulse generated between the terminals of the receiving module, in order to determine the configuration of the switch from among the secondary switch and the primary switch of the transmission module, the transmission module corresponding to the other module among the primary module and the secondary module.