Charging control apparatus, battery, electronic device, vehicle, charging control method, an electric storage system and charging control unit

• US 10,181,740 B2
• Filed: 02/10/2015
• Issued: 01/15/2019
• Est. Priority Date: 02/14/2014
• Status: Active Grant

• Current Assignee: Murata Manufacturing Co Limited
• Original Assignee: Murata Manufacturing Co Limited
• Inventors: Tanaka, Masatomo, Shimizu, Yoshifumi, Ichihashi, Akira, Yamaguchi, Akira
• Primary Examiner(s): Grant, Robert
• Assistant Examiner(s): Trischler, John
• Application Number:
  US14/618,040
• Publication Number:
  US 20150236529A1
• Time in Patent Office: 1,435 Days
• Field of Search: 320107, 320109
• CPC Class Codes: B60L 15/20 for control of the vehicle or its driving motor to achieve a desired performance, e.g. speed, torque, programmed variation of speed
• CPC Class Codes: B60L 15/2009 for braking
• CPC Class Codes: B60L 2200/12 Bikes
• CPC Class Codes: B60L 2210/30 AC to DC converters
• CPC Class Codes: B60L 2210/40 DC to AC converters
• CPC Class Codes: B60L 2240/12 Speed
• CPC Class Codes: B60L 2240/421 Speed
• CPC Class Codes: B60L 2240/423 Torque
• CPC Class Codes: B60L 2240/441 Speed
• CPC Class Codes: B60L 2240/443 Torque
• 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 2240/80 Time limits
• CPC Class Codes: B60L 2250/16 by display
• CPC Class Codes: B60L 2270/145 Structure borne vibrations
• CPC Class Codes: B60L 50/20 using propulsion power generated by humans or animals
• CPC Class Codes: B60L 50/51 characterised by AC-motors
• CPC Class Codes: B60L 50/52 characterised by DC-motors
• CPC Class Codes: B60L 50/62 charged by low-power generators primarily intended to support the batteries, e.g. range extenders
• CPC Class Codes: B60L 53/14 : Conductive energy transfer
• CPC Class Codes: B60L 53/53 : Batteries
• 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 55/00 : Arrangements for supplying energy stored within a vehicle to a power network, i.e. vehicle-to-grid [V2G] arrangements
• CPC Class Codes: B60L 58/15 : Preventing overcharging
• CPC Class Codes: B60L 58/21 : having the same nominal voltage
• CPC Class Codes: H02J 2310/48 : for electric vehicles [EV] or hybrid vehicles [HEV]
• CPC Class Codes: H02J 7/00036 : Charger exchanging data with battery
• CPC Class Codes: H02J 7/00047 : with provisions for charging different types of batteries
• CPC Class Codes: H02J 7/00712 : the cycle being controlled or terminated in response to electric parameters
• CPC Class Codes: Y02E 60/00 : Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
• CPC Class Codes: Y02T 10/62 : Hybrid vehicles
• CPC Class Codes: Y02T 10/64 : Electric machine technologies in electromobility
• 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 30/14 : Details associated with the interoperability, e.g. vehicle recognition, authentication, identification or billing

Abstract

A charging control apparatus is provided and includes a control unit configured to transmit instructions to a charging unit to execute charging of a battery. The control unit is configured to cause a scheme change from a first charging scheme to a second charging scheme based on charging scheme information received by the control unit.

Claims

1. A control apparatus comprising:

a control unit configured to transmit instructions to a charging and discharging circuit to execute charging and discharging of a battery, and the battery is charged and discharged by the charging and discharging circuit according to the instructions,

wherein the control unit is configured to cause a scheme change from a first scheme having a first charging rate and a first discharging rate to a second scheme having a second charging rate and a second discharging rate based on scheme information received by the control unit,

wherein the first charging rate is same as the second charging rate and the second discharging rate is smaller than the first discharging rate, and

wherein the control unit sets the second discharging rate in the second scheme at or below 1%/hour of change of state of charge when a negative electrode potential of the battery is from 0.1 V to 0.8V.

2. The control apparatus according to claim 1, wherein the scheme information is based on detection result of a state of the battery.

3. The control apparatus according to claim 1, wherein the scheme information includes a detected negative electrode potential of the battery.

4. The control apparatus according to claim 1, wherein the scheme information includes at least one selected from the group consisting of a current value of the battery, a voltage value of the battery, and a temperature of the battery.

5. The control apparatus according to claim 1, wherein the scheme information includes open-circuit voltage of the battery.

6. The control apparatus according to claim 1, wherein the control unit is also configured to transmit instructions to the charging and discharging circuit to execute discharging of the battery.

7. The control apparatus according to claim 1, wherein the second scheme includes a form of utilizing the first scheme with a small changing of a charge voltage.

8. The control apparatus according to claim 1, further comprising a state detecting and evaluating unit connected between the battery and the control unit, the state detecting and evaluating unit configured to detect and evaluate the state of the battery.

9. The control apparatus according to claim 8, wherein the state detecting and evaluating unit includes at least one selected from the group consisting of a current measuring unit, a voltage measuring unit, and a temperature measuring unit.

10. The control apparatus according to claim 9, wherein the state detecting and evaluating unit further includes a charging and discharging history calculation unit.

11. A control apparatus comprising:

a control unit including

a first control unit configured to transmit instructions to a charging and discharging circuit to execute charging and discharging of a battery under a first charging scheme having a first charging rate and a first discharging rate, the battery is charged and discharged by the charging and discharging circuit according to the instructions, and

a second control unit configured to transmit instructions to the charging and discharging circuit to execute charging and discharging of the battery under a second scheme having a second charging rate and a second discharging rate,

wherein the first charging rate is same as the second charging rate and the second discharging rate is smaller than the first discharging rate, and

wherein the control unit sets the second discharging rate in the second scheme at or below 1%/hour of change of state of charge when a negative electrode potential of the battery is from 0.1 V to 0.8V.

12. The control apparatus according to claim 11, wherein the control unit is configured to cause a scheme change from the first scheme of the first control unit to the second scheme of the second control unit based on scheme information received by the control unit.

13. The control apparatus according to claim 11, wherein the control unit is also configured to transmit instructions to the charging and discharging circuit to execute discharging of the battery.

14. A battery comprising:

a battery unit; and

a control unit configured to transmit instructions to a charging and discharging circuit to execute charging and discharging of the battery unit, the battery unit is charged by the charging and discharging circuit according to the instructions,

wherein the control unit is configured to cause a scheme change from a first scheme having a first charging rate and a first discharging rate to a second scheme having a second charging rate and a second discharging rate based on scheme information received by the control unit,

wherein the first charging rate is same as the second charging rate and the second discharging rate is smaller than the first discharging rate, and

wherein the control unit sets the second discharging rate in the second scheme at or below 1%/hour of change of state of charge when a negative electrode potential of the battery unit is from 0.1 V to 0.8V.

15. The battery according to claim 14, wherein the control unit is also configured to transmit instructions to the charging and discharging circuit to execute discharging of the battery unit.

16. An electronic device comprising:

a battery unit; and

a control unit configured to transmit instructions to a charging and discharging circuit to execute charging and discharging of the battery unit, the battery unit is charged and discharged by the charging and discharging circuit according to the instructions,

wherein the control unit is configured to cause a scheme change from a first scheme having a first charging rate and a first discharging rate to a second scheme having a second charging rate and a second discharging rate based on scheme information received by the control unit,

wherein the first charging rate is same as the second charging rate and the second discharging rate is smaller than the first discharging rate, and

wherein the control unit sets the second discharging rate in the second scheme at or below 1%/hour of change of state of charge when a negative electrode potential of the battery unit is from 0.1 V to 0.8V.

17. The electronic device according to claim 16, wherein the control unit is also configured to transmit instructions to the charging and discharging circuit to execute discharging of the battery unit.

18. A vehicle comprising:

a battery unit;

a control unit configured to transmit instructions to a charging and discharging circuit to execute charging and discharging of the battery unit, the battery unit is charged and discharged by the charging and discharging circuit according to the instructions; and

a converter configured to convert electric power supplied from the battery to a vehicle driving force,

wherein the control unit is configured to cause a scheme change from a first scheme having a first charging rate and a first discharging rate to a second scheme having a second charging rate and a second discharging rate based on scheme information received by the control unit,

wherein the first charging rate is same as the second charging rate and the second discharging rate is smaller than the first discharging rate, and

wherein the control unit sets the second discharging rate in the second scheme at or below 1%/hour of change of state of charge when a negative electrode potential of the battery unit is from 0.1 V to 0.8V.

19. The vehicle according to claim 18, wherein the control unit is also configured to transmit instructions to the charging and discharging circuit to execute discharging of the battery unit.

20. A control method comprising:

transmitting instructions to a charging and discharging circuit to execute charging and discharging of a battery, the battery is charged and discharged by the charging and discharging circuit according to the instructions,

changing from a first scheme having a first charging rate and a first discharging rate to a second scheme having a second charging rate and a second discharging rate based on scheme information received by a control unit,

wherein the first charging rate is same as the second charging rate and the second discharging rate is smaller than the first discharging rate, and

wherein the control unit sets the second discharging rate in the second scheme at or below 1%/hour of change of state of charge when a negative electrode potential of the battery unit is from 0.1 V to 0.8V.

21. The control method according to claim 20, comprising transmitting instructions to the charging and discharging circuit to execute discharging of the battery.

22. An electric storage system comprising:

a control apparatus including

a control unit configured to transmit instructions to a charging and discharging circuit to execute charging and discharging of a battery, and the battery is charged and discharged by the charging and discharging circuit according to the instructions;

a server connected to the control apparatus,

wherein the control unit is configured to cause a scheme change from a first scheme having a first charging rate and a first discharging rate to a second scheme having a second charging rate and a second discharging rate based on scheme information received by the control unit,

wherein the first charging rate is same as the second charging rate and the second discharging rate is smaller than the first discharging rate, and

wherein the control unit sets the second discharging rate in the second scheme at or below 1%/hour of change of state of charge when a negative electrode potential of the battery is from 0.1 V to 0.8V.

23. The electric storage system according to claim 22, wherein the control apparatus is configured to regulate a usage amount and a generation amount of electric power from an external electronic power supply network.

24. The electric storage system according to claim 22, wherein the server is configured to transmit and receive information from at least one power consumption device that is connected to the control apparatus.