초록 ▼

The present invention includes a battery pack or battery having excellent heat dissipation thus increasing the safety of these devices in high power applications. The battery packs and batteries of the invention have a surface with a high true surface area such that the surface roughness (R), define

The present invention includes a battery pack or battery having excellent heat dissipation thus increasing the safety of these devices in high power applications. The battery packs and batteries of the invention have a surface with a high true surface area such that the surface roughness (R), defined by the ratio of the true surface area of the surface to the apparent surface area of the surface, is greater than or equal to about 1.2. In addition, the battery packs and batteries of the invention are preferably formed of material having a high emissivity or include high emissivity labels to provide even greater heat dissipation.

대표청구항 ▼

The present invention includes a battery pack or battery having excellent heat dissipation thus increasing the safety of these devices in high power applications. The battery packs and batteries of the invention have a surface with a high true surface area such that the surface roughness (R), define

The present invention includes a battery pack or battery having excellent heat dissipation thus increasing the safety of these devices in high power applications. The battery packs and batteries of the invention have a surface with a high true surface area such that the surface roughness (R), defined by the ratio of the true surface area of the surface to the apparent surface area of the surface, is greater than or equal to about 1.2. In addition, the battery packs and batteries of the invention are preferably formed of material having a high emissivity or include high emissivity labels to provide even greater heat dissipation. rst port is diametrically opposite said second port. 5. The inter-axle differential assembly of claim 1 wherein said arcuate groove spans about one-hundred and eighty degrees. 6. The inter-axle differential assembly of claim 1 wherein said arcuate groove is located at one end of said housing. 7. The inter-axle differential assembly of claim 1 wherein said first and second ports are asymmetric. 8. An inter-axle differential assembly, comprising: an input shaft disposed about a longitudinal axis; an output shaft disposed about said longitudinal axis; a side gear at least partially disposed about said output shaft for rotation therewith; a gerotor pump disposed about said longitudinal axis between said input and output shafts, said pump including a pump body and said pump body defining a first port and a second port and further defining an arcuate groove in a radially outer surface; a rotor disposed within said pump body; and, an impeller disposed about said rotor; and, a pin extending radially inwardly from said side gear and received in said groove wherein said first port assumes an inlet position and said second port assumes an outlet position responsive to rotation of said output shaft in a first direction relative to said input shaft and said first port assumes said outlet position and said second port assumes said inlet position responsive to rotation of said output shaft in a second direction relative to said input shaft. 9. The inter-axle differential assembly of claim 8 wherein said pump is disposed within a sleeve portion of said side gear. 10. The inter-axle differential assembly of claim 8 wherein said first port is diametrically opposite said second port. 11. The inter-axle differential assembly of claim 8 wherein said arcuate groove spans about one-hundred and eighty degrees. 12. The inter-axle differential assembly of claim 8 wherein said arcuate groove is located at one end of said housing. 13. The inter-axle differential assembly of claim 8 wherein said first and second ports are asymmetric. 14. The inter-axle differential assembly of claim 8 wherein said gerotor pump further includes a leaf spring mounted between said pump body and said impeller. 15. The inter-axle differential assembly of claim 8 wherein said gerotor pump further includes: a cover disposed at one axial end of said rotor and said impeller; and, means for biasing said cover in the direction of said rotor and said impeller. 16. An inter-axle differential assembly, comprising: an input shaft disposed about a longitudinal axis; an output shaft disposed about said longitudinal axis; a side gear at least partially disposed about said output shaft for rotation therewith; a pump disposed about said longitudinal axis between said input and output shafts, said pump including a pump body and said pump body defining a first port and a second port and further defining an arcuate groove in a radially outer surface, said arcuate groove located at one end of said housing and spanning about one-hundred and eighty degrees; and, a pin extending radially inwardly from said side gear and received in said groove wherein said first port assumes an inlet position and said second port assumes an outlet position responsive to rotation of said output shaft in a first direction relative to said input shaft and said first port assumes said outlet position and said second port assumes said inlet position responsive to rotation of said output shaft in a second direction relative to said input shaft. 17. The inter-axle differential assembly of claim 16 wherein said pump comprises a gerotor pump. 18. The inter-axle differential assembly of claim 16 wherein said pump is disposed within a sleeve portion of said side gear. 19. The inter-axle differential assembly of claim 16 wherein said first port is diametrically opposite said second port. 20. The inter-axle differential assembly of claim 16 wherein said first and second ports are asymmetric.