J-type air-cooled battery thermal management system and method

1. A battery pack, comprising:

an enclosure, the enclosure separated into first, second, third and fourth sections, the first section being adjacent to each of the second and third sections and diagonally opposite the fourth section, and the third section being adjacent to each of the first and fourth sections and diagonally opposite the second section;

an intake port attached to the first section of the enclosure, the intake port coupleable to a source of cooling fluid;

a first exhaust port attached to the third section of the enclosure and a second exhaust port coupled to the fourth section of the enclosure;

a first set of battery cells located within the enclosure in the first and third sections, the first set of battery cells separated by one or more first fluid passageways; and

a second set of battery cells located within the enclosure in the second and fourth sections, the second set of battery cells separated by one or more second fluid passageways; and

a first control valve coupled to the first exhaust port and operable to control a first flow of fluid exhausted from the first exhaust port, and a second control valve coupled to the second exhaust port and operable to control a second flow of fluid exhausted from the second exhaust port, the first and second control valves operable to move between open and closed to adjust a flow path of the cooling fluid through the enclosure.

2. The battery pack as recited in claim 1 , wherein the first control valve and the second control valve are operable to be at least partially open at a same time.

3. The battery pack as recited in claim 1 , further including one or more first temperature sensors located proximate the first set of battery cells for sensing a first temperature in the first or third sections, and one or more second temperature sensors located proximate the second set of battery cells for sensing a second temperature in the second or fourth sections, the first and second control valves independently controllable based upon the first and second temperatures.

4. The battery pack as recited in claim 1 , wherein the enclosure further includes an intake plenum located at a first end thereof and extending along the first section and the second section, and an exhaust plenum located at a second opposing end thereof and extending along the third section and the fourth section, the first set of battery cells located within the enclosure between the intake plenum and the exhaust plenum in the first and third sections, and the second set of battery cells located within the enclosure between the intake plenum and the exhaust plenum in the second and fourth sections.

5. The battery pack as recited in claim 4 , wherein the intake port is coupled to the intake plenum in the first section, the first exhaust port is coupled to the exhaust plenum in the third section, and the second exhaust port is coupled to the exhaust plenum in the fourth section.

6. The battery pack as recited in claim 1 , wherein the intake port is coupled to a fan as the source of cooling fluid.

7. The battery pack as recited in claim 1 , wherein the one or more first fluid passageways vary in size and the one or more second fluid passageways vary in size.

8. The battery pack as recited in claim 1 , wherein the first section is a first lower section, the second section is a second lower section, the third section is a first upper section and the fourth section is a second upper section.

9. The battery pack as recited in claim 1 , wherein a fluid flow path between the intake port and the first exhaust port is a U-type fluid flow path and a fluid flow path between the intake port and the second exhaust port is a Z-type fluid flow path.