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Battery cooling system

  • US 7,252,904 B2
  • Filed: 03/16/2004
  • Issued: 08/07/2007
  • Est. Priority Date: 03/05/1998
  • Status: Expired due to Fees
First Claim
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1. A method for cooling a cordless power tool including a battery pack while in use:

  • enabling a fluid to enter through an inlet in said battery pack during use of the cordless power tool;

    passing the fluid around one or more cells in said battery pack during use of the cordless power tool;

    cooling said one or more cells with the passing fluid during use of the cordless power tool; and

    exiting the fluid from inside the battery pack to ambient through an outlet in said battery pack during use of the cordless power tool;

    operating said cordless power tool with said battery pack at a desired temperature for optimizing performance.

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