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US 8,505,322 B2Granted
Battery cooling
AssigneePax Scientific, Inc.
InventorsThomas Gielda, Kristian Debus, Jay Harman, Don Tomasi
Life of this patent
Estimating the term…
Abstract
A battery cooling system operates by pumping liquid through a cooling fluid circulation path. Because the battery cooling system pumps liquid, the compression system that generates the cooling power does not require the use of a condenser. The compression system utilizes a compression wave. An evaporator of the cooling system operates in the critical flow regime in which the pressure in an evaporator tube will remain almost constant and then ‘jump’ or ‘shock up’ to an increased pressure.
Claims20
A battery cooling system, comprising:
- a cooling fluid circulation path thermally coupled to a working fluid flow path and to at least one battery cell in a battery pack;
- a pump that maintains a fluid flow through the working fluid flow path;
- an evaporator that operates in the critical flow regime of the working fluid and generates a compression wave that shocks the maintained fluid flow, thereby changing the pressure of the maintained fluid flow to cool the fluid, the fluid flow provided to the evaporator by the pump without passing through a heater;
- and
- a heat exchanging mechanism thermally coupled to the fluid flow path, the heat exchanging mechanism removing heat from the battery pack.
2 more elements
A battery cooling system, comprising:
- a fluid flow path that passes in close proximity to at least one battery cell in a battery pack;
- a pump that maintains a fluid flow through the fluid flow path;
- and
- at least one evaporator that operates in the critical flow regime of the fluid and generates a compression wave that shocks the maintained fluid flow, thereby changing the pressure of the maintained fluid flow to cool the fluid, the cooled fluid removing heat from the battery cell via conduction, the fluid flow provided to the evaporator by the pump without passing through a heater.
1 more element
Dependencies are inferred from the claim text.