Housing for a battery and method for introducing fire-extinguishing fluid into such a housing

Abstract

The housing (1) for the battery comprises an envelope (2) and at least one rupture device (5) with a rupture cap (7) attached at an opening (3) formed in the envelope, the rupture cap (7) being configured to break when excessive pressure is applied to its outer surface (8) located outside the housing.

Description

[Technical Field]

[0001] The present invention relates to a housing for a battery. The present invention also relates to a battery pack including such a housing. The present invention also relates to a vehicle including such a housing. The present invention also relates to a method for manufacturing such a housing. Finally, the present invention relates to a method for introducing a fire-extinguishing fluid into such a housing. [Background technology]

[0002] Some motor vehicles, particularly electric or hybrid motor vehicles, are equipped with a power battery for supplying electrical energy to an electric motor, particularly a traction motor.

[0003] The power battery for an electric or hybrid vehicle is, for example, of the lithium-ion (Li-ion) type. Such a battery includes electrochemical cells containing an electrolyte. Such a battery generally includes several battery modules or sets of electrochemical cells. The battery is enclosed in a housing.

[0004] Such power batteries in electric or hybrid vehicles may catch fire, particularly in the event of a vehicle fire, for example, after a traffic accident or vandalism, or, although highly unlikely, after an internal battery failure. If excessive heat is released near the battery, a thermal runaway phenomenon may occur within the electrochemical cells. The chemical cells may then ignite inside the battery. Such fires of chemical origin are extremely difficult to extinguish, especially if they are confined within the battery housing. As a result, there is a risk of the battery exploding. Furthermore, the electrochemical cells may emit toxic and flammable liquids and / or gases.

[0005] One solution to extinguishing such battery fires is to "quench" the battery by injecting a fire-extinguishing fluid, particularly water, into the battery housing.

[0006] Document FR 2 987 701 discloses a device that allows firefighters to fill the traction battery of an electric or hybrid vehicle, making it possible to introduce fire extinguishing fluid into the battery as soon as the hatch blocking means are removed or melted.

[0007] However, this solution has drawbacks, in particular the opening of the hatch blocking means is often carried out under the influence of heat without the moment of opening being precisely controllable, which may be useful in certain circumstances to avoid smoke or fire that is no longer contained in the battery entering the vehicle interior as a result of premature opening. Summary of the Invention

[0008] The object of the present invention is to provide a housing for a battery and a method for introducing a fire-extinguishing liquid into the housing that overcomes the above-mentioned drawbacks and enhances the battery fire-extinguishing devices and methods known from the prior art. In particular, the present invention makes it possible to create a housing for a battery of a motor vehicle and a method for introducing a fire-extinguishing liquid into such a housing, which makes it possible to maintain the safety of vehicle passengers by withstanding high temperatures from a battery fire by preventing smoke and fire from entering the vehicle interior for as long as possible.

[0009] According to the present invention, a housing for a battery includes a housing and at least one rupture device with a rupture cap, the rupture device being attached to the position of an opening formed in the housing, the rupture cap being configured to break when overpressure is applied to its outer surface located outside the housing.

[0010] The burst cap may be concave on the inside of the housing and convex on the outside of the housing.

[0011] For example, the burst cap is in the shape of a disk.

[0012] The burst cap is made, for example, of steel, for example, type 316 stainless steel.

[0013] The rupture device may further comprise an inner support and an outer support, the rupture cap being inserted between the inner support and the outer support, the inner support being positioned against a peripheral portion of the inner surface of the rupture cap, and the outer support being positioned against a peripheral portion of the outer surface of the rupture cap, with holes drilled in the inner support and the outer support to expose a central portion of the rupture cap.

[0014] The inner support is made, for example, of steel, for example type 316 stainless steel.

[0015] The outer support is made, for example, of steel, for example type 316 stainless steel.

[0016] The housing may further comprise means for securing the rupture device to an enclosure of the housing.

[0017] The fastening means may comprise a fastening part obtained in a pull-out manner.

[0018] The fixing parts are made, for example, of steel, for example of the DX56 type steel.

[0019] The housing may further comprise a seal, in particular of the O-ring seal type, intended to be placed between said fixed part and the periphery of the housing.

[0020] The fixing means fixes the fixing part to the housing casing. - at least one fastening system comprising studs and nuts, for example a RIVKLE type sealed fastening system, or The device may further include at least one screw.

[0021] The invention also relates to a battery pack, in particular for powering electric or hybrid vehicles, comprising a housing as defined above.

[0022] The invention also relates to a motor vehicle, in particular an electric or hybrid motor vehicle, comprising a power battery pack as defined above or a housing as defined above.

[0023] The invention also relates to a method for manufacturing a housing as defined above, comprising the step of welding, in particular by laser, an inner support and an outer support to the rupture cap of the rupture device.

[0024] This method is - welding a fixed part to the rupture device, in particular by laser, and / or - It may include a step of electrophoresis of at least the stationary part and optionally the rupture device.

[0025] Finally, the invention relates to a method for introducing a fire-extinguishing liquid into a housing as defined above, comprising the step of applying an overpressure to a rupturing device so as to cause the rupture of the rupture cap.

[0026] The overpressure can be obtained by the force exerted by water discharged from the fire extinguishing nozzle and directed towards the bursting device.

[0027] The accompanying drawings represent, by way of example, embodiments of a housing according to the invention. [Brief explanation of the drawings]

[0028] [Figure 1] 1 is a perspective cross-sectional view partially illustrating one embodiment of a battery housing. [Figure 2] FIG. 1 is a partial top view of one embodiment of a battery housing. DETAILED DESCRIPTION OF THE INVENTION

[0029] The invention proposes providing the battery housing with a bursting cap configured to break when overpressure is applied to its surface located outside the housing, which makes it possible, in the event of a battery fire, to use the force exerted by water released from a fire extinguishing nozzle and directed at the bursting cap to break the bursting cap and introduce fire extinguishing fluid into the housing.

[0030] An embodiment of a housing 1 for a battery is described below with reference to FIGS.

[0031] The housing 1 is intended to enclose and / or serve as an enclosure, in particular a protective enclosure, for a battery. Such a battery is, for example, a power supply battery for an electric or hybrid vehicle. Such a battery is, for example, of the lithium-ion (Li-ion) type.

[0032] "Battery" is understood to mean a set of batteries or battery modules.

[0033] "Battery pack" is understood to mean a set comprising a housing and at least one battery arranged within the housing.

[0034] An "inner" or "internal" surface or wall is understood to mean a surface or wall located inside or facing the inside of the housing 1. An "outer" or "external" surface or wall is understood to mean a surface or wall located outside the housing 1.

[0035] "Normal use" or "normal utilization" of the housing 1 is understood to mean the use or utilization of the housing 1 in the absence of a local or widespread fire, in particular when the battery is in normal operation.

[0036] The housing 1 comprises a housing 2 or casing, which may be, for example, the upper casing of a battery.

[0037] The housing 1 is provided with a rupture device 5 intended to be mounted at the location of an opening 3 formed in the enclosure 2 .

[0038] In normal use of the housing 1, the rupturing device 5 is intended to block or seal the opening 3 in the enclosure 2. In the event of a fire, the rupturing device 5 is intended to break in a controlled manner at an appropriately chosen moment under the influence of a force exerted by the extinguishing fluid, in particular water, released from the extinguishing nozzle, thereby freeing the opening 3 and allowing the extinguishing fluid to be introduced into the interior of the housing 1.

[0039] Preferably, the opening 3 may be circular. Other shapes may also be provided for the opening 3, such as oval or rectangular.

[0040] The diameter of the opening 3 can be selected to substantially match the diameter of the water jet from the fire extinguishing nozzle.

[0041] Advantageously, the housing 2 has a chimney-shaped portion 4 at the location of the opening 3. The portion 4 is preferably substantially perpendicular to the surface of the portion of the housing 2 through which it extends.

[0042] Advantageously, the rupturing device 5 and the corresponding opening 3 are located in a position in the housing 2 that is directly accessible from the outside of the vehicle, so that firefighters can fill the housing 1 with extinguishing fluid in the event of a fire without having to get too close to the vehicle.

[0043] The bursting device 5 comprises a bursting cap 7 .

[0044] The burst cap 7 has an inner surface 6 that faces the interior of the housing 1 or is located inside the housing 1. The burst cap 7 has an outer surface 8 opposite the inner surface 6. The outer surface 8 of the burst cap 7 is located outside the housing 1.

[0045] In normal use of the housing 1, the bursting cap 7 is intended to block the opening 3. The bursting cap 7 also corresponds to that part of the bursting device 5 which, in the event of a fire, is intended to break in a controlled manner at an appropriately chosen moment under the effect of an overpressure applied to its outer surface 8, located outside the housing.

[0046] The burst cap 7 is configured to break when overpressure is applied to its outer surface 8 located outside the housing.

[0047] For example, the burst cap 7 is in the shape of a disk.

[0048] "Disc" is understood to mean a flat disc or a dome-shaped disc.

[0049] Advantageously, the burst cap 7 is in the form of a dome.

[0050] Advantageously, the burst cap 7 is concave on the inside of the housing 1 and convex on the outside of the housing 1. The burst cap 7 is mounted so that it breaks when overpressure is applied to its outer surface 8.

[0051] Preferably, a material is selected for the burst cap 7 that is resistant to the high temperatures that result from a battery fire.

[0052] Advantageously, a material is selected for the burst cap 7 that has insulating properties with respect to electromagnetic interference emitted or received by the internal elements of the housing 1. As a result, such a burst cap 7, in addition to its role as a blocking means for the opening 3 and therefore as a containment within the housing 1, also functions as an electromagnetic shield in normal use of the housing 1.

[0053] The burst cap 7 is made, for example, of stainless steel, for example of type 316 stainless steel.

[0054] The diameter of the burst cap 7 is, for example, between 25 mm and 200 mm. The thickness of the burst cap 7 is, for example, between 1 micrometer and 10 mm.

[0055] The diameter of the burst cap 7 is understood to mean the dimension of the inner surface 6 and the outer surface 8. The thickness of the burst cap 7 is understood to mean the dimension of the burst cap 7 in a direction substantially perpendicular to the inner surface 6 and the outer surface 8.

[0056] The material(s) and dimensions of the bursting cap 7 are selected in particular so that the bursting cap 7 can be broken in the event of a force exerted on the outer surface 8 of the bursting cap 7 by a water jet from a firefighter, for example by a fire extinguishing nozzle corresponding to a pressure of the order of 6 bar on a fire engine.

[0057] According to an exemplary embodiment, the burst cap 7 may be made of stainless steel, may be on the order of 60 mm in diameter, may be on the order of 5 micrometers thick, and may be dimensioned to break or open under pressures on the order of 700 millibars, i.e., when the difference between the pressure outside the housing and the pressure inside the housing exceeds a threshold on the order of 700 millibars.

[0058] Advantageously, the burst cap 7 includes at least one groove 20, referred to as a central groove, and / or at least one groove 22, referred to as a peripheral groove. The grooves 20, 22 correspond to lines of weakness in the burst cap 7. The burst cap 7 is intended to fracture or break in particular along one or more of the grooves 20, 22.

[0059] Groove 22 is, for example, a groove that extends along the periphery or circumference of burst cap 7. Groove 20 extends, for example, substantially along the central portion of burst cap 7, between two diametrically opposed points on the circumference of burst cap 7 or close to the circumference of burst cap 7.

[0060] Advantageously, the central groove 20 extends between two diametrically opposed points of the peripheral groove 22 .

[0061] The rupture device 5 may further comprise an inner support 9 and an outer support 11, with the rupture cap 7 being inserted between the inner support 9 and the outer support 11.

[0062] The inner support 9 is disposed against a peripheral portion or edge or periphery of the inner surface 6 of the burst cap 7. The outer support 11 is disposed against a peripheral portion or edge or periphery of the outer surface 8 of the burst cap 7.

[0063] The inner support 9 and outer support 11 of the bursting device 5 are preferably perforated to expose a central portion of the bursting cap 7 and to allow for the introduction of fire-extinguishing fluid into the housing 1 after the bursting cap 7 has been fractured.

[0064] The inner support 9 is, for example, in the form of an annulus.

[0065] The outer support 11 preferably has a central opening which allows direct exposure of the central part of the bursting cap 7 to the extinguishing fluid under pressure in the event of a fire.

[0066] For example, the outer support 11 of the bursting device 5 takes the form of a chimney.

[0067] The exposed portion of the bursting cap 7 is intended to fail when the overpressure exerted by the extinguishing fluid on its outer surface 8 has a threshold or predetermined minimum value. The overpressure threshold or predetermined minimum value can be selected depending on the application, the available opening means, and the internal back pressure that the device must withstand. According to an exemplary embodiment, the overpressure threshold or predetermined minimum value can be on the order of 700 mbar.

[0068] Advantageously, the inner support 9 and the outer support 11 are hermetically or firmly fixed to either side of the bursting cap 7. As a result, the bursting device 5 comprising the bursting cap 7 and the inner support 9 and the outer support 11 has the function of containing, in particular, fluids within the housing 1.

[0069] The inner support 9 and the outer support 11 are, for example, made of the same material, for example the same material as the burst cap 7 .

[0070] Preferably, one or more materials are selected for the inner support 9 and outer support 11 that are resistant to the high temperatures resulting from a battery fire and that exhibit electromagnetic shielding properties.

[0071] The inner support 9 and the outer support 11 are made, for example, of stainless steel, for example of type 316 stainless steel.

[0072] The housing 1 may further comprise means for securing the rupture device 5 to the enclosure 2 .

[0073] The fastening means comprise, for example, a fastening part 13. The fastening part 13 is obtained, for example, in a pull-out manner.

[0074] The fixing part 13 is intended in particular to ensure a tight seal between the rupturing device 5 and the enclosure 2 of the housing 1 .

[0075] Advantageously, the configuration of the fixing part 13 can be configured to surround the outer wall of the chimney 4 of the housing 2. The fixing part 13 is arranged against the outer surface of the chimney 4.

[0076] The fixing part 13 is, for example, annular in shape.

[0077] Advantageously, the configuration of the fixed part 13 can be configured such that a seal 15 can be arranged between the fixed part 13 and the housing 2. Preferably, the seal 15 is arranged in contact with the fixed part 13 and the chimney 4 of the housing 2.

[0078] The seal 15 is, for example, an O-ring seal.

[0079] The seal 15 is made, for example, of ethylene-propylene-diene monomer, commonly designated by the acronym EPDM, or of nitrile butadiene rubber, commonly designated by the acronym NBR.

[0080] The rupturing device 5 and the fixing part 13 in particular make it possible to hermetically close the opening 3 in the enclosure 2 of the housing 1 in normal application or use of the housing 1 .

[0081] Preferably, a material is selected for the fixed part 13 that is resistant to the high temperatures that result from a battery fire.

[0082] The fixing part 13 is made, for example, of steel, for example of the DX56 type steel.

[0083] The fixing part 13 can be attached to the housing 2 of the housing 1 via a system comprising at least one welded stud and nut, for example via a RIVKLE-type sealing system, or possibly via one or more screws 17. The studs can be welded to the fixing part 13 or directly integrated into the housing 1, for example.

[0084] One advantage of the above type of housing relates to the fact that the rupturing device 5 forms an efficient and easy to implement electromagnetic shield in normal use of the housing 1. The rupturing device 5 can allow access to the interior of the housing 1 in the event of a fire, while acting as insulation against electromagnetic interference emitted by or suffered by internal elements of the housing 1 in normal use.

[0085] The invention also relates to a battery pack 30 including a housing 1 of the above type. For example, the battery pack 30 further includes at least one battery, in particular for powering an electric or hybrid vehicle.

[0086] The invention further relates to a motor vehicle 40, in particular an electric or hybrid motor vehicle, comprising a housing 1 of the type described above or a battery pack 30 of the type described above.

[0087] Another advantage of the above type of housing is that in the event of a battery fire, it is possible to prevent smoke and fire from entering the vehicle by withstanding the high temperatures of the smoke and fire, thereby improving passenger safety.

[0088] For example, the above-mentioned type of housing can prevent smoke and fire from entering the vehicle interior for at least five minutes after a battery thermal runaway is detected, allowing passengers to exit or get out of the vehicle before smoke or fire enters the interior.

[0089] Another advantage of the above type of housing, compared to battery-operated fire extinguishing devices known from the prior art, lies in the fact that it makes it possible to provide an effective device for introducing fire extinguishing liquid into the battery housing, which is useful to firefighters in the event of a fire, while increasing the efficiency of the electromagnetic shielding in normal use.

[0090] The mode of execution of the method for manufacturing or installing a housing 1 for a battery of the type described above is described below.

[0091] An opening 3 is formed in the enclosure 2 of the housing 1, in particular by drilling.

[0092] The inner support 9 and the outer support 11 are fixed on either side of the rupture cap 7 of the rupture device 5, for example by welding, in particular by a laser-type method.

[0093] One advantage associated with the step of welding the inner support 9 and the outer support 11 to the rupture cap 7 of the rupture device 5, in particular by laser, lies in the fact that the inner support 9 and the outer support 11 are firmly fixed to the rupture cap 7.

[0094] The fixing part 13 is fixed, for example by welding, in particular by a laser type method, to the rupture device 5 comprising the assembly of the rupture cap 7 and the inner support 9 and the outer support 11 .

[0095] Deposition of the paint, for example by electrophoresis, in particular electrophoresis or cathodic electrodeposition, can be carried out at least on the fixed part 13 and optionally on the rupturing device 5 .

[0096] The electrophoresis step is particularly advantageous if the fastening part 13 is made of DX56 type steel.

[0097] The deposition of paint, for example by electrophoresis, in particular electrophoresis or cationic electrodeposition, can also be carried out on at least part of the rupturing device 5, for example simultaneously with the deposition on the fixed part 13.

[0098] One advantage of the method for manufacturing a housing for a battery of the above type relates to the fact that it is easy to implement and low cost.

[0099] The mode of operation of a method for introducing fire extinguishing fluid into a housing for a battery of the above type is described below, which method can be used, for example, by firefighters to extinguish a battery fire.

[0100] The present invention proposes a method that makes it possible, in the event of a battery fire, to use the force exerted by a jet from a fire extinguishing nozzle to rupture the rupture cap 7 of the rupturing device 5 and thus free the opening 3 in the enclosure 2 of the housing 1. As a result, direct access is therefore given to the interior of the housing 1 so that firefighters can fill the housing 1 with extinguishing fluid, in particular water, to "quench" the battery and extinguish the fire.

[0101] The method comprises the step of applying an overpressure to the rupturing device 5 so as to rupture the rupture cap 7 .

[0102] The overpressure is obtained, for example, by the force exerted by water emitted from a fire extinguishing nozzle and directed towards the bursting device 5 .

[0103] When the extinguishing fluid pressure reaches a threshold or predetermined minimum value, the exposed portion of the bursting cap 7 breaks. The overpressure threshold or predetermined minimum value can be selected depending on the application, the available opening means, and the internal back pressure that the device must withstand. According to an exemplary embodiment, the overpressure threshold or predetermined minimum value can be in the order of 700 mbar.

[0104] The broken burst cap 7 allows at least a portion of the opening 3 to be released, thereby allowing the introduction of fire extinguishing fluid into the housing 1 .

[0105] The extinguishing liquid can be introduced into the housing 1 as soon as the bursting cap 7 forming the blocking means blocking the opening 3 in the enclosure 2 of the housing 1 is broken.

[0106] The pressure is exerted by the extinguishing fluid on the convex outer surface 8 of the burst cap 7. As a result, the burst cap 7 breaks or tears or shatters under the influence of its inversion, as described in document EP 1 710 479. The convex burst cap 7 is inverted under the influence of pressure and tears along a pre-weakened line that contacts the cutting element. Other variations exist and can be used, in particular by simply dimensioning the thickness of the burst cap to withstand a pre-defined pressure.

[0107] One advantage of introducing extinguishing fluid into the battery housing of the above types is the fact that firefighters can extinguish a battery fire while maintaining a certain distance from the vehicle or housing, thereby reducing the risk of firefighter intervention.

[0108] Another advantage of the above-mentioned methods for introducing fire extinguishing fluid is that they allow the force exerted by the water jet from the fire extinguishing nozzle to be used at the most commonly used pressures, such as 6 bar on a fire engine. Water jets from fire extinguishing nozzles exhibiting such pressures are commonly used by firefighters worldwide. As a result, such methods do not require special equipment for firefighters.

[0109] Another advantage of the above-described method for introducing the extinguishing liquid lies in the fact that the opening of the opening 3 in the housing 2 of the housing 1 is carried out in a controlled manner. Such control of the moment of opening of the opening makes it possible to avoid the penetration of smoke and / or fire contained in the battery into the vehicle before passengers can exit the vehicle.

[0110] The housing 1 including the bursting devices 5 has been described in relation to Figures 1 and 2. Obviously, several bursting devices 5, and several associated openings 3, can be provided in one and the same housing 1. This makes it possible to optimize quick and easy access for firefighters to at least one bursting device 5, for example in the event of a traffic accident.

[0111] As a variant, the housing 1 for a battery of the type described above may also include other devices, referred to as "firefighter access" devices, that allow firefighters access to the interior of the housing 1 for the introduction of fire-extinguishing fluid. For example, the "firefighter access" device refers to both the bursting cap concept introduced here and devices that include heat-melting zones, particularly located along the interface with the vehicle chassis.

[0112] A housing 1 intended to enclose a power supply battery, in particular a battery of the lithium-ion (Li-ion) type, in particular for automobiles, has been described in relation to Figures 1 and 2. Such a housing 1 could be used for all applications involving batteries with a flammable electrolyte, in particular in the automotive, stationary energy storage and aviation sectors.

[0113] The above describes a method for introducing water into the battery housing 1. Of course, other extinguishing fluids than water can also be used.

Claims

1. 1. A housing (1) for a battery, comprising: a housing (2); and at least one rupture device (5) with a rupture cap (7), the rupture device being attached to a position of an opening (3) formed in the housing, the rupture cap (7) being configured to break or open when a pressure is applied to an outer surface (8) located outside the housing such that the difference between the pressure outside the housing and the pressure inside the housing exceeds a threshold value of 700 millibars, the rupture cap (7) being concave inside the housing and convex outside the housing.

2. - said bursting cap (7) is in the form of a disc, and / or - A housing according to claim 1, wherein said bursting cap (7) is made of steel.

3. 3. The housing of claim 1 or 2, wherein the rupture device (5) further comprises an inner support (9) and an outer support (11), the rupture cap (7) is inserted between the inner support (9) and the outer support (11), the inner support is positioned against a peripheral portion of the inner surface (6) of the rupture cap, and the outer support is positioned against a peripheral portion of the outer surface (8) of the rupture cap, and the inner support and the outer support are perforated to expose a central portion of the rupture cap.

4. 4. A housing according to claim 3, wherein the inner support (9) is made of steel and / or the outer support (11) is made of steel.

5. 5. A housing according to any one of claims 1 to 4, further comprising fixing means for fixing the rupturing device (5) to the enclosure (2) of the housing.

6. 6. A housing according to claim 5, wherein the fastening means comprises a fastening part (13) obtained by a pull-off method.

7. 7. A housing according to claim 6, wherein the fixed part (13) is made of steel.

8. 8. A housing according to claim 6 or 7, further comprising a seal (15), in particular of the O-ring seal type, intended to be placed between the fixed part (13) and the enclosure (2) of the housing.

9. The fixing means fixes the fixing part (13) to the case (2) of the housing, - at least one fastening system comprising studs and nuts, or - at least one screw (17), The housing of claim 6 , further comprising:

10. A battery pack (30), in particular for powering electric or hybrid vehicles, comprising a housing (1) according to any one of claims 1 to 9.

11. A motor vehicle (40), in particular an electric or hybrid motor vehicle, comprising a power battery pack (30) according to claim 10 or a housing (1) according to any one of claims 1 to 9.

12. 5. A method for manufacturing a housing (1) according to claim 3 or 4, comprising the step of welding the inner support (9) and the outer support (11) to the rupture cap (7) of the rupture device (5), in particular by laser.

13. 13. A method for manufacturing a housing (1) according to claim 12, further comprising fastening means for fastening said rupture device (5) to said enclosure (2) of said housing.

14. 14. A method for manufacturing a housing (1) according to claim 13, wherein said fastening means comprises a fastening part (13) obtained by a pull-off method.

15. A method for manufacturing a housing (1) for a battery, comprising the steps of: The housing (1) comprises a housing (2) and at least one rupture device (5) with a rupture cap (7), the rupture device being attached to the position of an opening (3) formed in the housing, the rupture cap (7) being configured to break or open when a pressure is applied to its outer surface (8) located outside the housing such that the difference between the pressure outside the housing and the pressure inside the housing exceeds a threshold value of 700 mbar, the rupture cap (7) being concave inside the housing and convex outside the housing; the rupture device (5) further comprises an inner support (9) and an outer support (11), the rupture cap (7) is inserted between the inner support (9) and the outer support (11), the inner support is positioned against a peripheral portion of the inner surface (6) of the rupture cap, the outer support is positioned against a peripheral portion of the outer surface (8) of the rupture cap, and the inner support and the outer support are perforated to expose a central portion of the rupture cap; further comprising a fixing means for fixing the rupturing device (5) to the enclosure (2) of the housing; The fastening means comprises a fastening part (13) obtained by a pull-out method, The method for manufacturing a housing (1) for a battery comprises: - welding, in particular by laser, the inner support (9) and the outer support (11) to the rupture cap (7) of the rupture device (5); - welding said fastening part (13) to said rupture device (5), in particular by laser, and / or - a method for manufacturing a housing (1) for a battery, comprising a step of electrophoresis of at least said fastening part (13) and optionally said rupturing device (5).

16. - said bursting cap (7) is in the form of a disc, and / or - A method for manufacturing a housing (1) according to claim 15, wherein said bursting cap (7) is made of steel.

17. 17. A method for manufacturing a housing (1) according to claim 15 or 16, wherein the inner support (9) is made of steel and / or the outer support (11) is made of steel.

18. 18. A method for manufacturing a housing (1) according to any one of claims 14 to 17, wherein said fixed part (13) is made of steel.

19. 19. A method for manufacturing a housing (1) according to any one of claims 14 to 18, further comprising a seal (15), in particular of the O-ring seal type, intended to be placed between the fixed part (13) and the housing casing (2).

20. The fixing means fixes the fixing part (13) to the case (2) of the housing, - at least one fastening system comprising studs and nuts, or - at least one screw (17), 20. A method for manufacturing a housing (1) according to any one of claims 14 to 19, further comprising:

21. 10. A method for introducing a fire-extinguishing liquid into a housing (1) according to any one of claims 1 to 9, comprising the step of applying an overpressure to the bursting device (5) so as to cause the bursting cap (7) to burst.

22. 22. A method for introducing a fire-extinguishing liquid into a housing (1) according to claim 21, wherein said overpressure is obtained by a force exerted by water released from a fire-extinguishing nozzle and directed towards said bursting device (5).

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