One-way safety valve, gas venting device and motor vehicle.

FR3152300A1Active Publication Date: 2025-02-28RENAULT SA
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Patent Information

Application Number
FR2023008952
Authority / Receiving Office
FR · FR
Patent Type
Applications
Current Assignee / Owner
Filing Date
2023-08-25
Publication Date
2025-02-28
Estimated Expiration
2043-08-25

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Abstract

The invention relates to a one-way safety valve comprising a body (8) that defines a chamber (9) and in which an inlet port (10) and an outlet port (11) are provided, opening into the chamber and equipped respectively with an inlet valve (12) and an outlet valve (13) configured to prevent the passage of fluid except from the inlet port to the outlet port when the fluid reaches a predetermined pressure threshold on the side of the inlet port. According to the invention, the outlet valve is configured to be held in a closed position of said chamber by depressurizing the chamber. The invention also relates to a drainage device equipped with such a valve and a motor vehicle equipped with a battery and such a drainage device. Figure for the abstract: Fig. 2
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Claims

at least one of the inlet (12) and outlet (13) valves is mechanically independent of the body (8).

5. A valve according to any one of claims 1 to 4, wherein a seal (18, 19) is placed between at least one of the valves (12, 13) and the body (8).

6. A valve according to any one of claims 1 to 5, wherein the inlet valve (12) comprises a depressurization orifice (21) equipped with a non-return valve (22) and configured to allow depressurization of the chamber (9).

7. A valve according to any one of claims 1 to 6, wherein the chamber (9) has a truncated cone shape, the inlet orifice (10) being formed in the small base of the truncated cone and the outlet orifice (13) being formed in the large base of the truncated cone.

8. Valve according to any one of claims 1 to 7, in which the determined pressure threshold is between 0.1 and 0.5 bar and is preferably equal to 0.3 bar.

9. Gas evacuation device for an accumulator battery module, comprising a gas evacuation conduit (4) of which a first end (5) is configured to communicate with the battery module (2) and of which a second end (6) opposite the first end (5) is equipped with a safety valve (7) according to any one of claims 1 to 8.

10. Motor vehicle equipped with an accumulator battery (2) and a gas evacuation device (3) according to claim 9.

Citation Information

Patent Citations

  • Pressure control device, in particular for water storage tank

    EP3012540A1

  • Fluidic safety valve and battery component equipped therewith

    US10156294B2

  • All-metal pressure relief valve

    US20200149646A1

  • Apparatuses for managing fluids through a pipe

    US9644356B1