Apparatus, system and method for charging batteries

• US 8,853,997 B2
• Filed: 10/21/2010
• Issued: 10/07/2014
• Est. Priority Date: 07/20/2010
• Status: Active Grant

• Current Assignee: Superior Electron LLC
• Original Assignee: Superior Electron LLC
• Inventors: Fung, Henry T.
• Primary Examiner(s): Tso, Edward
• Assistant Examiner(s): TORRES RUIZ, JOHALI ALEJANDRA
• Application Number:
  US12/909,108
• Publication Number:
  US 20120019196A1
• Time in Patent Office: 1,447 Days
• Field of Search: 320/107
• US Class Current: 320/107
• CPC Class Codes: B60L 2240/72 Charging station selection relying on external data
• CPC Class Codes: B60L 53/14 Conductive energy transfer
• CPC Class Codes: B60L 53/305 Communication interfaces
• CPC Class Codes: B60L 53/63 in response to network capacity
• CPC Class Codes: B60L 53/64 Optimising energy costs, e.g. responding to electricity rates
• CPC Class Codes: B60L 53/65 involving identification of vehicles or their battery types
• CPC Class Codes: B60L 53/665 Methods related to measuring, billing or payment
• CPC Class Codes: B60L 55/00 Arrangements for supplying energy stored within a vehicle to a power network, i.e. vehicle-to-grid [V2G] arrangements
• CPC Class Codes: G01R 31/382 Arrangements for monitoring battery or accumulator variables, e.g. SoC
• CPC Class Codes: H02J 2310/48 for electric vehicles [EV] or hybrid vehicles [HEV]
• CPC Class Codes: H02J 7/0013 acting upon several batteries simultaneously or sequentially H02J7/1423 takes precedence
• CPC Class Codes: Y02E 60/00 Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
• 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 10/126 the energy generation units being or involving electric vehicles [EV] or hybrid vehicles [HEV], i.e. power aggregation of EV or HEV, vehicle to grid arrangements [V2G]
• CPC Class Codes: Y04S 30/12 : Remote or cooperative charging
• CPC Class Codes: Y04S 30/14 : Details associated with the interoperability, e.g. vehicle recognition, authentication, identification or billing

Abstract

An apparatus, system, and method for charging batteries is provided. The apparatus comprises a monitoring unit configured for coupling to a battery and power source. The monitoring unit configured to acquire a control value indicative of a parameter, and to control the charging of the battery responsive thereto. The system comprises a plurality of battery chargers configured for coupling with respective batteries and a common power source. Each charger configured to obtain information relating to a parameter, to communicate the information to the other chargers, to acquire a control value from the information obtained thereby or received from another charger, and to control the charging of the associated battery based on the acquired control value. The method comprises providing a monitoring unit coupled to a battery and power source, acquiring a control value indicative of a parameter, and controlling the charging of the battery responsive to the control value.

Claims

1. An apparatus for charging a battery, comprising:

a monitoring unit configured to be electrically coupled to said battery and a power source, wherein said monitoring unit is configured to;

acquire a control value indicative of a predetermined parameter, said parameter including a random number;

calculate a charging current, said charging current being determined as a function of at least said control value indicative of said predetermined parameter including said random number, and

control the charging of said battery responsive to said control value, wherein said charging of said battery includes charging said battery according to said charging current.

2. The apparatus of claim 1, wherein said monitoring unit is configured to determine when to charge said battery based on said control value, and to control the charging of said battery in accordance with said determination.

3. The apparatus of claim 1, wherein said charging current is determined at least in part by a normalizing value.

4. The apparatus of claim 1, wherein said battery is a first battery and said monitoring unit is a first monitoring unit, said apparatus further comprising a receiver electrically coupled to said monitoring unit and operative to receive electrical signals generated by a second monitoring unit associated with a second battery, wherein said electrical signals are representative of information relating to at least one of said second battery and the charging of said second battery.

5. The apparatus of claim 4, wherein said information represented by said electrical signals comprises a second control value, said second control value indicative of a second parameter, said second parameter relating to at least one of said second battery and the charging of said second battery, and further wherein said first monitoring unit is configured to control the charging of said first battery responsive to said second control value.

6. The apparatus of claim 4, wherein said first monitoring unit is configured to acquire a second control value from said information represented by said electrical signals, wherein said second control value is indicative of a parameter relating to at least one of said second battery and the charging of said second battery.

7. The apparatus of claim 4, wherein said monitoring unit and said second monitoring unit are coupled together via a peer-to-peer network, and said first monitoring unit is configured to receive electrical signals directly from said second monitoring unit via said peer-to-peer network.

8. The apparatus of claim 3, wherein said normalizing value corresponds to user-defined charging window.

9. The apparatus of claim 1, further comprising a transmitter electrically coupled with said monitoring unit and operative to transmit electrical signals generated by said monitoring unit, wherein said electrical signals are representative of information relating to at least one of said battery and the charging of said battery.

10. The apparatus of claim 1, wherein said monitoring unit is configured to acquire a second predetermined parameter, said second predetermined parameter comprising a remaining charge level of said battery, and further wherein said monitoring unit is configured to sense said remaining charge level of said battery.

11. The apparatus of claim 10, wherein said monitoring unit further comprises a battery level sensor configured to be electrically coupled to said battery and operative to sense said remaining charge level of said battery.

12. The apparatus of claim 1, wherein said monitoring unit is configured to acquire a second predetermined parameter, said second predetermined parameter comprising a voltage level of said power source, and further wherein said monitoring unit is configured to sense said voltage level of said power source.

13. The apparatus of claim 1, wherein said monitoring unit comprises a processor configured to acquire said control value indicative of said predetermined parameter and to control the charging of said battery.

14. The apparatus of claim 1 further comprising a current regulator configured to be electrically coupled to said monitoring unit, said power source, and said battery, said current regulator operative to regulate the charging current supplied to said battery.

15. The apparatus of claim 1 further comprising a user input device electrically coupled to said monitoring unit.

16. The apparatus of claim 1 further comprising a display device electrically coupled to said monitoring unit.

17. A battery charging system, comprising

a first battery charger unit configured to be electrically coupled to a first battery and a power source;

a second battery charger unit configured to be electrically coupled to a second battery and said power source;

each of said first and second battery charger units configured to obtain information relating to at least one of said first and second batteries, respectively, the charging of said first and second batteries, respectively, and said power source;

each of said first and second battery charger units configured to communicate said obtained information to the other of said first and second battery charger units; and

wherein

said first battery charger unit is configured to;

acquire a first control value indicative of a predetermined parameter, said predetermined parameter including a random number;

calculate a charging current, said charging current being determined as a function of at least said first control value indicative of said predetermined parameter including said random number, and

control the charging of said first battery responsive to said control value acquired by said first battery charger unit, wherein said charging of said battery includes charging said battery according to said charging current; and

said second battery charger unit is configured to;

acquire a second control value indicative of a predetermined parameter based on at least one of said information obtained by said second battery charger unit, and said information obtained by said first battery charger unit and received by said second battery charger unit, and

control the charging of said second battery responsive to said second control value acquired by said second battery charger unit.

18. The system of claim 17 further comprising a communication network to which said first and second battery charger units are coupled and over which said first and second battery charger units are configured to communicate.

19. The system of claim 18 wherein said network is a peer-to-peer network.

20. A method of charging a battery, comprising:

providing a battery charger unit comprising a monitoring unit electrically coupled to said battery and a power source;

acquiring, by said monitoring unit, a control value indicative of a predetermined parameter, said predetermined parameter including a random number;

calculating a charging current, said charging current being determined as a function of at least said control value indicative of said predetermined parameter including said random number, and

controlling, by said monitoring unit, the charging of said battery responsive to said control value, wherein said charging of said battery includes charging said battery according to said charging current.

21. The method of claim 20 further comprising the step of determining when to charge said battery responsive to said control value, and wherein said controlling step comprises controlling the charging of said battery in accordance with said determination.

22. The method of claim 20, including communicating with another battery charger unit via a peer-to-peer network.

23. The method of claim 20, wherein said battery is a first battery, said battery charger unit is a first battery charger unit, and said monitoring unit is a first monitoring unit, said method further comprising the step of receiving, by said first monitoring unit, electrical signals generated by a second monitoring unit of a second battery charger unit associated with a second battery, wherein said electrical signals are representative of information relating to at least one of said second battery and the charging of said second battery.

24. The method of claim 23, wherein said information represented by said electrical signals comprises a second control value, said second control value indicative of a second parameter, said second parameter relating to at least one of said second battery and the charging of said second battery, and said controlling step comprises controlling the charging of said first battery responsive to said second control value.

25. The apparatus of claim 23, wherein said information represented by said electrical signals comprises information used by said first monitoring unit to acquire said control value, and further wherein said acquiring step comprises acquiring, by said first monitoring unit, said control value based on said information received directly from said second monitoring unit, wherein said control value is indicative of a parameter relating to at least one of said second battery and the charging of said second battery.

26. The method of claim 23 further comprising the steps:

generating, by said first monitoring unit, a request to said second monitoring unit for said information relating to at least one of said second battery and the charging of said second battery; and

transmitting said request to said second monitoring unit.

27. The method of claim 20, wherein said charging current corresponds to a weight, said weight corresponding to user input.

28. The method of claim 20, wherein said predetermined parameter comprises at least one of a charge level of said battery and a voltage level of said power source, said method further comprising the step of sensing at least one of said charge level of said battery and said voltage level of said power source.