Battery temperature regulating device

Patent metadata

Field	Value
Publication number	US-9673493-B2
Application number	US-201415024049-A
Country	US
Kind code	B2
Filing date	Oct 2, 2014
Priority date	Oct 3, 2013
Publication date	Jun 6, 2017
Grant date	Jun 6, 2017

Abstract

A battery temperature regulating device a battery module, a temperature detection device, a battery temperature regulating device, and a battery pack case. The battery temperature regulating device includes a cooling heat exchanger configured to cool air that passes therethrough, a condensed water reservoir configured to store condensed water generated in the cooling heat exchanger, and an air blowing device configured to blow the air in the vicinity of the cooling heat exchanger and the condensed water reservoir and circulate the air within the battery pack case. The battery temperature regulating device is configured to cool the air that passes through the cooling heat exchanger, drive the air blowing device to execute the cooling of the battery module when the temperature of the battery module is higher than a predetermined temperature, and drive only the air blowing device regardless of the temperature of the battery module.

First claim

The invention claimed is:

1. A battery temperature regulating device comprising:
a battery module;
a temperature detection device configured to detect a temperature of the battery module;
a battery temperature regulating device configured to adjust the temperature of the battery module; and
a battery pack case housing the battery module and the battery temperature regulating device,
the battery pack case including a vent configured to enable passage of gas from inside the battery pack case to outside,
the battery temperature regulating device including
a cooling heat exchanger configured to cool air that passes therethrough,
a condensed water reservoir configured to store condensed water generated in the cooling heat exchanger, and
an air blowing device configured to blow the air in the vicinity of the cooling heat exchanger and the condensed water reservoir and circulate the air within the battery pack case,
the battery temperature regulating device is configured to cool the air that passes through the cooling heat exchanger,
drive the air blowing device to execute the cooling of the battery module when the temperature of the battery module detected by the temperature detection device is higher than a predetermined temperature,
drive only the air blowing device regardless of the temperature of the battery module detected by the temperature detection device, at a predetermined timing after the execution of the cooling of the battery module is completed, and
set a drive output of the air blowing device when driving at the predetermined timing lower than the drive output of the air blowing device when executing cooling of the battery module.

2. The battery temperature regulating device according to claim 1 , wherein
the battery pack case is configured to be mounted on a vehicle,
the battery module is a vehicle power source device configured to supply power to vehicle-mounted equipment, and
the predetermined timing is a time of a vehicle startup after executing cooling of the battery module.

3. The battery temperature regulating device according to claim 1 , wherein
the cooling of the battery module is executed only when charging the battery module.

4. The battery temperature regulating device according to claim 3 , wherein
the battery module is configured to be electrically connectable and disconnectable to an external power source, the external power source being a power source outside of the battery pack case, the battery module being configured to be charged by power supplied by the external power source in a state of being electrically connected to the external power source, and
the battery module is configured to be charged when the battery module is connected to the external power source.

5. The battery temperature regulating device according to claim 1 , wherein
the battery temperature regulating device is configured to drive only the air blowing device during a predetermined drive time from a start of the driving of only the air blowing device,
determine a drive time from the generated amount of the condensed water, and
determine the generated amount of the condensed water from an air volume of the battery pack case, frequency of use of the battery module for cooling, and a representative environment temperature and humidity.

6. The battery temperature regulating device according to claim 5 , wherein
the battery temperature regulating device is configured to count an elapsed time from a start of driving of only the air blowing device,
when the vehicle is stopped before the elapsed time becomes the predetermined drive time, is configured to stop the count and store the difference between the elapsed time and the predetermined drive time, and
during a vehicle startup, is configured to drive only the air blowing device until the elapsed time from the vehicle startup becomes the difference between the elapsed time and the predetermined drive time.

7. The battery temperature regulating device according to claim 5 , wherein
the battery temperature regulating device is configured to count an elapsed time from when starting the driving of only the air blowing device,
when the vehicle is stopped before the elapsed time becomes the predetermined drive time, is configured to stop the count and store the difference between the elapsed time and the predetermined drive time, and
when cooling of the battery module is executed after a vehicle stop and before a vehicle startup, is configured to reset the stopped count and set the predetermined drive time.

8. The battery temperature regulating device according to claim 5 , wherein
the battery temperature regulating device includes a heater for heating, and
when the drive time is being counted and heating of the battery module is carried out by driving the heater, the battery temperature regulating device is configured to stop the count and set the drive time to zero.

9. The battery temperature regulating device according to claim 1 , wherein
the battery temperature regulating device includes an air flow path unit comprising
the condensed water reservoir,
the air blowing device configured to blow the air in the vicinity of the cooling heat exchanger and the condensed water reservoir and circulate the air within the battery pack case through the air flow path unit,
a duct extending at least to a vicinity of the vent connected to the air flow path unit, and
an air outlet configured to blow out the air in the vicinity of the cooling heat exchanger and the condensed water reservoir, which is blown by the air blowing device, toward the vent, disposed in the duct.

10. The battery temperature regulating device according to claim 2 , wherein
the cooling of the battery module is executed only when charging the battery module.

11. The battery temperature regulating device according to claim 2 , wherein
the battery temperature regulating device is configured to drive only the air blowing device during a predetermined drive time from a start of the driving of only the air blowing device,
determine a drive time from the generated amount of the condensed water, and
determine the generated amount of the condensed water from an air volume of the battery pack case, frequency of use of the battery module for cooling, and a representative environment temperature and humidity.

12. The battery temperature regulating device according to claim 3 , wherein
the battery temperature regulating device is configured to drive only the air blowing device during a predetermined drive time from a start of the driving of only the air blowing device,
determine a drive time from the generated amount of the condensed water, and
determine the generated amount of the condensed water from an air volume of the battery pack case, frequency of use of the battery module for cooling, and a representative environment temperature and humidity.

13. The battery temperature regulating device according to claim 4 , wherein
the battery temperature regulating device is configured to drive only the air blowing device during a predetermined drive time from a start of the driving of only the air blowing device,
determine a drive time from the generated amount of the condensed water, and
determine the generated amount of the condensed water from an air volume of the battery pack case, frequency of use of the battery module for cooling, and a representative environment temperature and humidity.

14. The battery temperature regulating device according to claim 6 , wherein
the battery temperature regulating device is configured to count the elapsed time from when starting the driving of

Assignees

• Nissan Motor

Inventors

• Oshima Kentaro
• Hatta Kentaro
• Yang Qiye
• Ogawa Yuuki

Classifications

• H01M50/24

  adapted for protecting batteries from their environment, e.g. from corrosion (thermal insulation H01M10/658) · CPC title

• B60L50/64

  Constructional details of batteries specially adapted for electric vehicles · CPC title

• H01M50/249

  specially adapted for aircraft or vehicles, e.g. cars or trains (constructional details of batteries specially adapted for electric vehicles B60L50/64) · CPC title

• H01M50/209

  adapted for prismatic or rectangular cells (H01M50/216 takes precedence) · CPC title

• H01M2/1072

  Electricity · mapped topic