Abstract

The present invention relates to a fire suppression arrangement (8) for suppressing a fire in a battery pack, such as a lithium-ion battery pack (7), said arrangement (8) comprising said battery pack (7), and a thermal management system (5) comprising a liquid circuit (13) for circulating a liquid to control the temperature of said battery pack (7). The liquid circuit (13) comprises at least one opening (25) which is closed by a sealing member (35) comprising a fusible portion (43), wherein said fusible portion (43) is configured to melt when exposed to a temperature above a predetermined activation temperature, thereby allowing liquid to be discharged from said liquid circuit (13) through said opening (25) to cool a portion of said battery pack (7) in the event of an abnormal temperature rise near said opening (25).

IPC Classes  ?

• H01M 10/0525 - Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodesLithium-ion batteries
• H01M 10/42 - Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
• H01M 10/613 - Cooling or keeping cold
• H01M 10/625 - Vehicles
• H01M 10/655 - Solid structures for heat exchange or heat conduction
• H01M 10/6552 - Closed pipes transferring heat by thermal conductivity or phase transition, e.g. heat pipes
• H01M 10/6556 - Solid parts with flow channel passages or pipes for heat exchange
• H01M 10/6568 - Liquids characterised by flow circuits, e.g. loops, located externally to the cells or cell casings

Abstract

2) exerted by a second force application arrangement of the second detection conduit arrangement (21).

IPC Classes  ?

• A62C 35/68 - Details, e.g. of pipes or valve systems
• F16K 11/07 - Multiple-way valves, e.g. mixing valvesPipe fittings incorporating such valvesArrangement of valves and flow lines specially adapted for mixing fluid with all movable sealing faces moving as one unit comprising only sliding valves with linearly sliding closure members with cylindrical slides
• A62C 37/44 - Control of fire-fighting equipment an actuating signal being generated by a sensor separate from an outlet device only the sensor being in the danger zone

Abstract

The present invention relates to a fire extinguishing system comprising a pressurized detection conduit (115), an extinguishing line (108) separate from the detection conduit (115), and a control module (105) adapted for sensing a pressure drop in the detection conduit (115) and for opening supply of extinguishing medium from a storage (103) to the extinguishing line (108). The detection conduit (115) is gas-permeable and filled with a detection liquid. The fire extinguishing system further comprises a liquid-gas interface (117) fluidly connecting the detection conduit (115) to a pressurized gas source (103, 106), wherein the liquid-gas interface (117) comprises an interface container (123) defining a gas space (131) which communicates with the pressurized gas source (106) and a liquid space (133) which communicates with the detection conduit (115).

IPC Classes  ?

• A62C 35/64 - Pipe-line systems pressurised
• A62C 3/07 - Fire prevention, containment or extinguishing specially adapted for particular objects or places in vehicles, e.g. in road vehicles
• A62C 37/44 - Control of fire-fighting equipment an actuating signal being generated by a sensor separate from an outlet device only the sensor being in the danger zone
• A62C 37/48 - Thermally sensitive initiators
• A62C 35/02 - Permanently-installed equipment with containers for delivering the extinguishing substance

Abstract

The present invention relates to a fire extinguishing system comprising a fire extinguishing medium container (3), a first (5) and second (7) fire extinguishing sub-systems, and a valve assembly (9) fluidly connecting the fire extinguishing medium container (3) to each of the first (5) and second (7) fire extinguishing sub-systems. The fire extinguishing system (1) further comprises a first and a second detection conduit arrangement (19, 21) connected to the valve assembly (9) and arranged to activate the fire extinguishing system (1), wherein the valve assembly (9) comprises a valve chamber (33), a valve member (35) being movably arranged in the valve chamber (33), the valve member (35) having: i) a first force receiving surface (45) arranged to be subjected to a first force (F1) exerted by a force applicator of the first detection conduit arrangement (19), and ii) a second force receiving surface (47) arranged to be subjected to a second force (F2) exerted by a second force application arrangement of the second detection conduit arrangement (21).

IPC Classes  ?

• A62C 35/68 - Details, e.g. of pipes or valve systems

Abstract

The present invention relates to a fire extinguishing system comprising a fire extinguishing medium container (3), a first (5) and second (7) fire extinguishing sub-systems, and a valve assembly (9) fluidly connecting the fire extinguishing medium container (3) to each of the first (5) and second (7) fire extinguishing sub-systems. The fire extinguishing system (1) further comprises a first and a second detection conduit arrangement (19, 21) connected to the valve assembly (9) and arranged to activate the fire extinguishing system (1), wherein the valve assembly (9) comprises a valve chamber (33), a valve member (35) being movably arranged in the valve chamber (33), the valve member (35) having: i) a first force receiving surface (45) arranged to be subjected to a first force (F1) exerted by a force applicator of the first detection conduit arrangement (19), and ii) a second force receiving surface (47) arranged to be subjected to a second force (F2) exerted by a second force application arrangement of the second detection conduit arrangement (21).

IPC Classes  ?

• A62C 35/68 - Details, e.g. of pipes or valve systems

Abstract

a) caused by said pressure drop in the detection conduit (15), such that outflow of detection fluid is stopped. The present invention also relates to a method of controlling such as fire detection system.

IPC Classes  ?

• A62C 37/00 - Control of fire-fighting equipment
• A62C 37/44 - Control of fire-fighting equipment an actuating signal being generated by a sensor separate from an outlet device only the sensor being in the danger zone
• A62C 37/46 - Construction of the actuator
• A62C 35/68 - Details, e.g. of pipes or valve systems
• A62C 3/07 - Fire prevention, containment or extinguishing specially adapted for particular objects or places in vehicles, e.g. in road vehicles

Abstract

The present invention relates to a fire extinguishing system comprising a pressurized detection conduit (115), an extinguishing line (108) separate from the detection conduit (115), and a control module (105) adapted for sensing a pressure drop in the detection conduit (115) and for opening supply of extinguishing medium from a storage (103) to the extinguishing line (108). The detection conduit (115) is gas-permeable and filled with a detection liquid. The fire extinguishing system further comprises a liquid-gas interface (117) fluidly connecting the detection conduit (115) to a pressurized gas source (103, 106), wherein the liquid-gas interface (117) comprises an interface container (123) defining a gas space (131) which communicates with the pressurized gas source (106) and a liquid space (133) which communicates with the detection conduit (115).

IPC Classes  ?

• A62C 35/64 - Pipe-line systems pressurised
• A62C 37/44 - Control of fire-fighting equipment an actuating signal being generated by a sensor separate from an outlet device only the sensor being in the danger zone
• A62C 37/48 - Thermally sensitive initiators
• A62C 3/07 - Fire prevention, containment or extinguishing specially adapted for particular objects or places in vehicles, e.g. in road vehicles

Abstract

The present invention relates to a fire detection system arranged for detecting fire by detecting a pressure drop in a detection conduit (15) caused by rupture of the detection conduit (15). The system comprises a detection fluid container (13) for holding a pressurized detection fluid, the detection conduit (15) which is connected to the detection fluid container (13), and a valve assembly controlling the supply of detection fluid from the detection fluid container (13) to the detection conduit (15). The valve assembly (17) is configured to assume: i) an open operating state, in which the valve assembly (17) permits fluid communication between the detection fluid container (13) and the detection conduit (15), wherein the valve assembly (17) comprises a holding member (41 a) upon which a pressure force exerted by pressurized fluid in the detection conduit (15) acts to maintain the valve assembly (17) in the open operating position, and ii) a closed state, in which the valve assembly (17) prevents fluid communication between the detection fluid container (13) and the detection conduit (15), wherein the valve assembly (17) is arranged for switching from the open operating state to the closed state upon a reduction of the pressure force exerted on the holding member (41 a) caused by said pressure drop in the detection conduit (15), such that outflow of detection fluid is stopped. The present invention also relates to a method of controlling such as fire detection system.

IPC Classes  ?

• A62C 35/68 - Details, e.g. of pipes or valve systems
• A62C 37/44 - Control of fire-fighting equipment an actuating signal being generated by a sensor separate from an outlet device only the sensor being in the danger zone
• A62C 3/07 - Fire prevention, containment or extinguishing specially adapted for particular objects or places in vehicles, e.g. in road vehicles