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US 2011/0256432 A1Published application
Battery humidity control
AssigneeCoda Automotive, Inc.
InventorsBroc William TenHouten, Alex Hamade, Philippe Hart Gow
Life of this patent
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Abstract
Systems and methods are provided for controlling humidity in gases exposed to batteries, which can be applied to humidity control in climate control gases in battery packs, for example those used in electric vehicles.
Claims35
A system for inhibiting condensation within a battery pack, comprising:
- a humidity sensor constructed and arranged to determine the humidity of a first gas portion to which at least one region within the battery pack is or will be exposed;
- and
- a control system constructed and arranged to alter, responsive at least in part to the humidity determination, a dew point of a second gas portion such that condensation is inhibited.
A system for controlling humidity within a battery pack, comprising:
- a humidity sensor constructed and arranged to determine the humidity of a first gas portion to which at least one region within the battery pack is or will be exposed;
- and
- a control system constructed and arranged to alter, responsive at least in part to the humidity determination, at least one of a temperature of a second gas portion, a flow rate of a second gas portion, and/or a ratio of fresh to battery-pack recirculated components of a second gas portion.
A system for controlling humidity within a battery pack, comprising:
- a battery pack comprising at least one electrochemically rechargeable battery cell;
- a passageway fluidically connecting the battery pack to a gas outside the battery pack;
- a passageway within the battery pack constructed and arranged to provide a flow path for recirculated gas within the battery pack;
- a humidity sensor constructed and arranged to determine the humidity of at least one region within the battery pack and/or within the passageway;
- and
- a control system constructed and arranged to establish a ratio of a flow rate of the gas from outside the battery back to a flow rate of the recirculated gas based at least in part upon the humidity determination.
3 more elements
A system for controlling humidity within a battery pack, comprising:
- a battery pack comprising at least one electrochemically rechargeable battery cell;
- a passageway fluidically connecting the battery pack to a gas outside the battery pack;
- a humidity sensor constructed and arranged to determine the humidity of at least one region within the battery pack and/or the passageway;
- and
- a control system constructed and arranged to alter a temperature of the gas from outside the battery pack based at least in part upon the humidity determination.
2 more elements
A system for altering the humidity within a battery pack, comprising:
- a battery pack comprising at least one electrochemically rechargeable battery cell;
- a passageway fluidically connecting the battery pack to a gas outside the battery pack;
- a humidity sensor constructed and arranged to determine the humidity of at least one region within the battery pack;
- and
- a control system constructed and arranged to alter a flow rate of the gas from outside the battery pack into the battery pack based at least in part upon the humidity determination.
2 more elements
A method for inhibiting condensation within a battery pack, comprising:
- determining the humidity of a first gas portion to which at least one region within a battery pack is exposed, and
- altering a property of a second gas portion, based at least in part upon the humidity determination, such that the dew point of the second gas portion is lower than a minimum temperature within the at least one region within the battery pack.
A method for controlling humidity within a battery pack, comprising:
- determining the humidity of at least one region within a battery pack comprising at least one electrochemically rechargeable battery cell and/or within a passageway fluidically connecting the battery pack to a gas outside the battery pack, and
- altering at least one of a temperature of a gas transported into the battery pack, a flow rate of the gas transported into the battery pack, and/or a ratio of a flow rate of the gas transported into the battery pack to a flow rate of a gas recirculated within the battery pack based at least in part upon the humidity determination.
Dependencies are inferred from the claim text.