Method and device for cooling an electrochemical energy store
AssigneeLi-Tec Battery GmbH
InventorsJoerg Kaiser, Volker Hennige, Holger Mikus, Tim Schaefer
Life of this patent
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Abstract
A device for cooling an electrochemical energy store, particularly a galvanic cell containing lithium, is provided with a cooling agent (209) which has an extinguishing effect in the event of a fire and which flows through or around the energy store, the housing thereof (201), or parts of the energy store or of the housing thereof.
Claims18
-20. (canceled)
A device for cooling an electromechanical energy store, particularly a lithium-containing galvanic cell, wherein
- a coolant (109, 209, 309, 409) flows around or through the energy store, the housing thereof (101, 201, 301, 401) or parts of the energy store or of the housing thereof, which has an extinguishing effect in the event of a fire
- wherein
- a) the coolant is a gel or a viscoelastic fluid and flows through a coolant circuit (104, 204, 304, 404) which is closed when the energy store is operating normally and which is designed such that the coolant emerges from the closed coolant circuit at given points in the event of a fire and is able to have an extinguishing effect at said points.
- or
- b) the coolant flows through a coolant circuit which is closed when the energy store is operating normally and which is designed such that the coolant is able to escape from the closed coolant circuit at certain points in the event of a fire and is mixed with an additive when it emerges from the coolant circuit, wherein a gel or a viscoelastic fluid is formed.
A method for cooling an electrochemical energy store selected from a lithium-containing galvanic cell, wherein
- a coolant a coolant flows around or through the energy store, the housing thereof or parts of the energy store or of the housing thereof, which has an extinguishing effect in the event of a fire
- wherein
- a) the coolant is a gel or a viscoelastic fluid and flows through a coolant circuit (104, 204, 304, 404) which is closed when the energy store is operating normally and which is designed such that the coolant emerges from the closed coolant circuit at given points in the event of a fire and is able to have an extinguishing effect at said points.
- or
- b) the coolant flows through a coolant circuit which is closed when the energy store is operating normally and which is designed such that the coolant is able to escape from the closed coolant circuit at certain points in the event of a fire and is mixed with an additive when it emerges from the coolant circuit, wherein a gel or a viscoelastic fluid is formed.
A method of cooling an electromechanical energy store, a lithium-containing galvanic cell, comprising circulating a coolant comprising a mixture of at least one polymer, at least one surfactant and at least one ester oil and water, wherein the coolant flows around or through the energy store, the housing thereof or parts of the energy store or of the housing thereof and has an extinguishing effect in the event of a fire.
A method for cooling an electrochemical energy store, a lithium-containing galvanic cell, comprising circulating a coolant comprising an additive in the form of a mixture of at least one polymer, at least one surfactant and at least one ester oil in conjunction with water,
- wherein
- the coolant flows around or through the energy store, the housing thereof or parts of the energy store or the housing thereof and has an extinguishing effect in the event of a fire in conjunction with the additive.
Dependencies are inferred from the claim text.