Battery cooling system
A cordless power tool has a housing which includes a mechanism to couple with a removable battery pack. The battery pack includes one or more battery cells as well as a vent system in the battery pack housing which enables fluid to move through the housing. A mechanism is associated with the battery pack to dissipate heat from the battery pack.
1. A cordless power tool comprising:
a cordless power tool with a removable battery pack having a housing including a mechanism for coupling with said removable battery pack;
said removable battery pack comprising a housing with one or more cells in said housing, a mechanism, including a heat pump, for heating said one or more cells in said housing; and
said mechanism heating said one or more cells in said battery pack maintaining a desired temperature for optimizing performance during use of the cordless power tool.
2. The cordless power tool according to claim 1 , wherein said heat pump is electrically coupled with said one or more cells for powering said heat pump.
3. The cordless tool according to claim 1 , wherein said mechanism cools the cells.
4. The cordless tool according to claim 1 , further comprising a sensor for sensing temperature of said one or more cells.
5. A removable battery pack for a hand held cordless tool comprising:
a mechanism for coupling and decoupling the removable battery pack with the handheld cordless tool;
a housing with one or more cells in said housing, a mechanism, including a heat pump, for heating said one or more cells in said housing; and
said mechanism heating said battery pack housing maintaining a desired temperature for optimizing performance during use of the cordless power tool.
6. The removable battery pack according to claim 5 , wherein said mechanism includes a thermally conductive medium in contact with said one or more cells.
7. A removable battery pack for a hand held cordless tool comprising:
a mechanism for coupling and decoupling the removable battery pack with the hand held cordless tool;
a housing with one or more cells in said housing, a mechanism, including a heat pump, for changing temperature of said one or more cells in said housing; and
said mechanism changing temperature in said battery pack housing and maintaining a desired temperature for optimizing performance during use of the cordless power tool.
8. A cordless power tool comprising:
a cordless power tool with a removable battery pack having a housing including a mechanism for coupling with said removable battery pack;
said removable battery pack comprising a housing with one or more cells in said housing, a mechanism, including a heat pump, for changing temperature of said one or more cells in said housing; and
said mechanism changing temperature in said battery pack maintaining a desired temperature for optimizing performance during use of the cordless power tool.
9. The cordless tool according to claim 8 , wherein said mechanism heats the cells.
10. The cordless tool according to claim 8 , wherein said mechanism cools the cells.
11. The cordless tool according to claim 8 , further comprising a sensor for sensing temperature of said one or more cells.
12. A cordless power tool comprising:
a cordless power tool with a removable battery pack having a housing including a mechanism for coupling with said removable battery pack;
said removable battery pack comprising a housing with one or more cells in said housing, a mechanism, including a heat pump, for heating said one or more cells in said housing; and
said mechanism heating said one or more cells in said battery pack maintaining a desired temperature for optimizing performance during use of the cordless power tool.