Vehicle equipped with power storage device and temperature control method of power storage device

• US 8,417,403 B2
• Filed: 08/04/2008
• Issued: 04/09/2013
• Est. Priority Date: 08/09/2007
• Status: Active Grant

• Current Assignee: Aisin AW Company Limited (Aisin Corp.), Toyota Jidosha Kabushiki Kaisha (Toyota Motor Corporation)
• Original Assignee: Aisin AW Company Limited (Aisin Corp.), Toyota Jidosha Kabushiki Kaisha (Toyota Motor Corporation)
• Inventors: Iida, Takahide, Takahara, Masatoshi, Kimura, Keisuke
• Primary Examiner(s): Tran, Khoi
• Assistant Examiner(s): LIN, ABBY YEE
• Application Number:
  US12/672,041
• Publication Number:
  US 20100324765A1
• Time in Patent Office: 1,709 Days
• Field of Search: 180 651- 658, 701/22, 701/412, 701/415, 701/423, 701/439, 701/446, 701/465, 701/467, 903902-960, 320125-167, 318139-158
• US Class Current: 701/22
• CPC Class Codes: B60K 1/02 comprising more than one electric motor
• CPC Class Codes: B60K 6/445 Differential gearing distribution type
• CPC Class Codes: B60L 15/2045 for optimising the use of energy
• CPC Class Codes: B60L 2240/20 angular
• CPC Class Codes: B60L 2240/441 Speed
• CPC Class Codes: B60L 2240/62 Vehicle position
• CPC Class Codes: B60L 2240/662 Temperature
• CPC Class Codes: B60L 2260/56 Temperature prediction, e.g. for pre-cooling
• CPC Class Codes: B60L 50/16 with provision for separate direct mechanical propulsion
• CPC Class Codes: B60L 50/61 by batteries charged by engine-driven generators, e.g. series hybrid electric vehicles
• CPC Class Codes: B60L 53/14 Conductive energy transfer
• CPC Class Codes: B60L 58/12 responding to state of charge [SoC]
• CPC Class Codes: B60L 58/24 for controlling the temperature of batteries
• CPC Class Codes: B60L 58/25 by controlling the electric load
• CPC Class Codes: B60W 10/06 including control of combustion engines
• CPC Class Codes: B60W 10/08 including control of electric propulsion units, e.g. motors or generators
• CPC Class Codes: B60W 10/26 for electrical energy, e.g. batteries or capacitors
• CPC Class Codes: B60W 20/00 Control systems specially adapted for hybrid vehicles hybrid vehicle design, B60K6/00; electric vehicles B60L
• CPC Class Codes: B60W 20/11 using model predictive control [MPC] strategies, i.e. control methods based on models predicting performance utilising navigation and traffic information in the control strategy B60W20/12
• CPC Class Codes: B60W 20/12 using control strategies taking into account route information estimation or calculation of non-directly measurable driving parameters B60W40/00
• CPC Class Codes: B60W 2050/146 : Display means
• CPC Class Codes: B60W 2510/0638 : Engine speed
• CPC Class Codes: B60W 2510/244 : Charge state
• CPC Class Codes: B60W 2510/246 : Temperature
• CPC Class Codes: B60W 2520/10 : Longitudinal speed
• CPC Class Codes: B60W 2520/14 : Yaw
• CPC Class Codes: B60W 2540/10 : Accelerator pedal position
• CPC Class Codes: B60W 2555/20 : Ambient conditions, e.g. wind or rain
• CPC Class Codes: B60W 2556/50 : of positioning data, e.g. GPS [Global Positioning System] data
• CPC Class Codes: B60W 2710/086 : Power
• CPC Class Codes: B60W 2710/246 : Temperature
• CPC Class Codes: B60W 2720/10 : Longitudinal speed
• CPC Class Codes: B60W 50/0097 : Predicting future conditions
• CPC Class Codes: H01M 10/443 : in response to temperature
• CPC Class Codes: H01M 10/486 : for measuring temperature
• CPC Class Codes: H01M 10/613 : Cooling or keeping cold
• CPC Class Codes: H01M 10/615 : Heating or keeping warm
• CPC Class Codes: H01M 10/625 : Vehicles
• CPC Class Codes: H01M 10/63 : Control systems charging or discharging in response to temperature H01M10/44 , H01M10/443; measurement of temperature H01M10/48 , H01M10/486
• CPC Class Codes: H01M 10/633 : characterised by algorithms, flow charts, software details or the like
• CPC Class Codes: H01M 10/635 : based on ambient temperature
• CPC Class Codes: H01M 10/6563 : with forced flow, e.g. by blowers
• CPC Class Codes: H01M 10/6571 : Resistive heaters arrangements for heating the battery by its resistance to the internal current H01M10/637
• CPC Class Codes: H01M 10/663 : the system being an air-conditioner or an engine
• CPC Class Codes: H01M 16/006 : of fuel cells with rechargeable batteries
• CPC Class Codes: H01M 2250/20 : Fuel cells in motive systems, e.g. vehicle, ship, plane
• CPC Class Codes: Y02E 60/10 : Energy storage using batteries
• CPC Class Codes: Y02E 60/50 : Fuel cells
• 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 90/14 : Plug-in electric vehicles
• CPC Class Codes: Y02T 90/16 : Information or communication technologies improving the operation of electric vehicles
• CPC Class Codes: Y02T 90/40 : Application of hydrogen technology to transportation, e.g. using fuel cells

Abstract

A vehicle includes a battery as a power storage device that can be charged and discharged, a booster unit, an inverter, and a motor generator operating as a vehicle driving unit receiving electric power supply from the battery to drive the vehicle, a coupling unit coupling the vehicle with an external power supply for charging the battery from the outside of the vehicle, and a control device performing control related to the battery. The control device determines whether or not a destination is a charging-available place where the battery can be charged from the outside of the vehicle, and if the destination is a charging-available place, performs control related to the battery so that the temperature of the battery is a charging-efficient temperature on arrival at the destination.

Claims

1. A vehicle comprising:

a power storage device that can be charged and discharged;

a vehicle driving unit receiving electric power supply from said power storage device to drive the vehicle;

a coupling unit coupling the vehicle with an external power supply to charge said power storage device from the outside of the vehicle; and

a control device performing control related to said power storage device, wherein

said control device determines whether or not a destination is a charging-available place where said power storage device can be charged from the outside of the vehicle and, if said destination is a charging-available place, performs control related to said power storage device so that a temperature of said power storage device becomes a charging-efficient temperature when the vehicle arrives at said destination.

2. The vehicle according to claim 1, wherein said control device performs control related to said power storage device so that a temperature of said power storage device does not exceed a prescribed upper limit temperature during travel, if said destination is not a charging-available place.

3. The vehicle according to claim 1, wherein said control device includes

input means for inputting said destination,

determination means for determining whether or not said destination is a charging-available place,

detection means for detecting a present temperature of said power storage device,

obtaining means for obtaining reference information that affects a temperature of said power storage device when said vehicle arrives at the input destination,

prediction means for predicting a temperature of said power storage device on arrival at said destination, based on the present temperature of said power storage device and said reference information,

temperature control means for controlling a temperature of said power storage device, and

temperature management means for managing a temperature of said power storage device during travel, if said destination is a charging-available place, by setting an intermediate target temperature of the temperature of said power storage device during travel of said vehicle so that the predicted temperature of said power storage device on arrival at said destination is a charging-efficient temperature, based on the detected temperature of said power storage device, and by controlling said temperature control means so that the temperature of said power storage device reaches said intermediate target temperature.

4. The vehicle according to claim 3, further comprising a power source capable of driving said vehicle, which is different from said power storage device,

wherein said temperature control means controls a temperature of said power storage device by controlling a frequency of use of said power source and charging/discharging of said power storage device.

5. The vehicle according to claim 3, wherein said temperature control means includes cooling means for cooling said power storage device.

6. The vehicle according to claim 3, wherein said temperature control means includes heating means for heating said power storage device.

7. The vehicle according to claim 3, further comprising means for determining whether or not a present vehicle location is in the vicinity of the input destination,

wherein said temperature management means starts defining said intermediate target temperature so that the predicted temperature of the power storage device on arrival at said destination is a charging-efficient temperature, if said destination is a charging-available place and if it is determined that the present vehicle location is in the vicinity of said destination.

8. The vehicle according to claim 7, wherein said temperature management means controls said temperature control means so that a temperature of said power storage device does not exceed a prescribed upper limit temperature, if it is determined that said present vehicle location is not in the vicinity of said destination, and said temperature management means controls said temperature control means so that a temperature of said power storage device on arrival at the destination becomes a charging-efficient temperature, if it is determined that said present vehicle location is in the vicinity of said destination.

9. A temperature control method of a power storage device in a vehicle including a power storage device that can be charged and discharged, a vehicle driving unit receiving electric power supply from said power storage device to drive the vehicle, and a coupling unit coupling the vehicle with an external power supply to charge said power storage device from the outside of the vehicle, the method being performed by a control device in the vehicle, and comprising the steps of:

determining whether or not a destination is a charging-available place where said power storage device can be charged from the outside of the vehicle; and

performing control related to said power storage device so that a temperature of said power storage device becomes a charging-efficient temperature when the vehicle arrives at said destination, if said destination is a charging-available place.

10. The temperature control method of a power storage device according to claim 9, wherein said step of performing control performs control related to said power storage device so that a temperature of said power storage device does not exceed a prescribed upper limit temperature during travel, if said destination is not a charging-available place.

11. The temperature control method of a power storage device according to claim 9, further comprising the steps of:

inputting said destination;

detecting a present temperature of said power storage device;

obtaining reference information that affects a temperature of said power storage device when said vehicle arrives at the input destination; and

predicting a temperature of said power storage device on arrival at said destination, based on the present temperature of said power storage device and said reference information, wherein

said step of performing control, if said destination is a charging-available place, manages a temperature of said power storage device during travel by setting an intermediate target temperature of the temperature of said power storage device during travel of said vehicle so that the predicted temperature of said power storage device on arrival at said destination is a charging-efficient temperature, based on the detected temperature of said power storage device, and by controlling a temperature control means so that the temperature of said power storage device becomes said intermediate target temperature.