EP4626559A1 - A device for extinguishing batteries placed in cover - Google Patents

A device for extinguishing batteries placed in cover

Info

Publication number
EP4626559A1
EP4626559A1 EP24708346.2A EP24708346A EP4626559A1 EP 4626559 A1 EP4626559 A1 EP 4626559A1 EP 24708346 A EP24708346 A EP 24708346A EP 4626559 A1 EP4626559 A1 EP 4626559A1
Authority
EP
European Patent Office
Prior art keywords
extinguishing
extension piece
spike
fire extinguishing
battery
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
EP24708346.2A
Other languages
German (de)
French (fr)
Inventor
Jan Stuchlík
Jiri Uher
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Publication of EP4626559A1 publication Critical patent/EP4626559A1/en
Pending legal-status Critical Current

Links

Classifications

    • A—HUMAN NECESSITIES
    • A62—LIFE-SAVING; FIRE-FIGHTING
    • A62C—FIRE-FIGHTING
    • A62C3/00—Fire prevention, containment or extinguishing specially adapted for particular objects or places
    • A62C3/07—Fire prevention, containment or extinguishing specially adapted for particular objects or places in vehicles, e.g. in road vehicles
    • A—HUMAN NECESSITIES
    • A62—LIFE-SAVING; FIRE-FIGHTING
    • A62B—DEVICES, APPARATUS OR METHODS FOR LIFE-SAVING
    • A62B3/00—Devices or single parts for facilitating escape from buildings or the like, e.g. protection shields, protection screens; Portable devices for preventing smoke penetrating into distinct parts of buildings
    • A62B3/005—Rescue tools with forcing action
    • A—HUMAN NECESSITIES
    • A62—LIFE-SAVING; FIRE-FIGHTING
    • A62C—FIRE-FIGHTING
    • A62C3/00—Fire prevention, containment or extinguishing specially adapted for particular objects or places
    • A62C3/16—Fire prevention, containment or extinguishing specially adapted for particular objects or places in electrical installations, e.g. cableways
    • A—HUMAN NECESSITIES
    • A62—LIFE-SAVING; FIRE-FIGHTING
    • A62C—FIRE-FIGHTING
    • A62C31/00—Delivery of fire-extinguishing material
    • A62C31/02—Nozzles specially adapted for fire-extinguishing
    • A62C31/22—Nozzles specially adapted for fire-extinguishing specially adapted for piercing walls, heaped materials, or the like
    • A—HUMAN NECESSITIES
    • A62—LIFE-SAVING; FIRE-FIGHTING
    • A62C—FIRE-FIGHTING
    • A62C31/00—Delivery of fire-extinguishing material
    • A62C31/28—Accessories for delivery devices, e.g. supports

Definitions

  • the invention concerns extinguishing of batteries placed in cover and used as electrical energy sources for various applications, for example in electric cars.
  • one of the basic issues connected with the extinguishing of fires is direct elimination of the fire as close as possible to its source. This is especially true in the area of electric vehicles currently experiencing a big boom.
  • the main problem in this area is the potential source of fire in the electric battery where, due to a design error or as a result of a road accident, the battery skeleton and therefore the electrochemical cells may be damaged.
  • This is addressed by a number of methods in which the key is first to get as close to the battery as possible through the vehicle bodywork, then to enter the battery pack or casing inside to reach the system of individual electrochemical cells, and finally to perform the required extinguishing or cooling operation.
  • the basic principle is thus basically always a forced penetration into the inner part of the batery case. This is done by a number of methods, also based on the use of prior art.
  • a theoretical advantage is the extinguishing spike penetration from the vehicle outside to its inside.
  • most electric vehicles are provided with a reinforced floor and a protective cover over the batery so that the batery compartment casing cannot be pierced in a road accident. This is therefore the strongest part of the electric vehicle, where considerable resistance must be overcome.
  • a certain disadvantage is that the above described principle can only be applied to a vehicle standing on a solid ground with the wheels down.
  • the vehicle lies on its side or is upside down lying on its roof, or is located in a place where the extinguishing unit cannot be inserted under the chassis to use the support of a solid ground, this device cannot be used successfully. Complications can also arise when tires burn through and the ground clearance of the vehicle is so low that the extinguisher cannot be placed under the battery cover.
  • Another possible approach is to use a spike and run it mechanically through the vehicle floor in the vehicle interior.
  • a hollow spike on a longer extension rod is used, which is then pushed into the battery compartment in the floor with the help of a ram and then the fire in the compartment is extinguished with a liquid extinguishing agent.
  • One disadvantage of this method is the necessary assistance of two persons wherein one holds the spike and the other hammers the spike with the ram into the chassis from in the vehicle cab.
  • a certain problem with this solution is the limited space for manipulation in the cab and after the spike is driven into the battery compartment, the pressure of the extinguishing agent may cause the spike to loosen and fall out of the punched hole and cause the battery to burn uncontrollably.
  • the most common procedure is to extinguish the vehicle with a stream of water and further cool it with a larger volume of water distributed from the jet across the vehicle chassis until the temperature of the battery drops below a safe temperature limit After that the vehicle is placed in a special container and immersed in water up to the battery top height.
  • a disadvantage of this extinguishing method is the large volume of water and the presence of the acting fire-fighters in a close proximity to the vehicle, which represents a relatively high risk of injury.
  • Another problematic aspect of the intervention is a big volume of contaminated water, and in some cases, when the vehicle is located in an underground garage, its pulling out and placing in the container, which is very demanding technically.
  • a device for extinguishing batteries placed in cover consisting of an spreading tool having two spreader arms, the essence of which is that an upper extension piece and a lower extension piece are fixed on the two opposite spreader arms of the said spreading tool, the upper extension piece being provided, on its opposite, non-attached end, with a fire extinguishing agent inlet connected to a source of an extinguishing fluid, wherein an extinguishing spike is fixed with a holder element to the fire extinguishing agent inlet, wherein this fire extinguishing agent inlet is connected by the extinguishing spike holder at the upper extension piece end, and wherein the lower extension piece is provided with a backing plate on the supporting clamping surface.
  • the backing plate is preferably provided with grooving.
  • the upper extension piece is preferably composed and firmly assembled of identical mirrored parts.
  • the lower extension piece is preferably composed and firmly assembled of identical mirrored parts.
  • the advantage of the proposed solution is in the effective handling of the fire extinguishing agent stream and its introduction directly into the battery without any complicated creation of an entry for the extinguishing agent, and thus in the reduced danger for the acting firefighters represented by potential contact with the burning vehicle.
  • Fig. 2 - a device for extinguishing batteries placed in cover (a side view, an outline, an axonometric view)
  • Fig. 4 - a lower extension piece provided with a backing plate (a side view, an outline, an axonometric view) Examples of Invention Embodiments
  • the source of fires in electric cars is in the vast majority of cases their battery, consisting of a large number of small cells connected to larger modules in which energy is stored to drive the electric motor.
  • the solution to this problem then consists of several stages of activities that follow each other in order to effectively combat the dangerous situation.
  • First of all after getting acquainted with the situation and obtaining information about the vehicle and its design, especially with regard to the location of the batteries, it is necessary to obtain information about or locate the battery and the access route to it or the necessary procedure to obtain a direct route to the battery by punching through the bodywork and the necessary removal of the parts of the vehicle preventing access to the battery. Then comes the subsequent stage of liquidation directly at the source, so to speak, i.e. piercing the enclosure surrounding the set of electrochemical power sources.
  • the whole battery is firmly enclosed and protected against impact and external influences by a protective cover. If the enclosure integrity is compromised, for example In a road accident or by penetration of a salty solution, some of the cells inside can be short- circuited, with a consequence of generation of a considerable amount of thermal energy followed by fire. This may not necessarily be caused by an accident, or by mechanical damage, but the causes may also include a design error or a technical defect in the electrical installation, again causing overheating and fire from the battery.
  • the electric vehicle contains high-voltage operating circuits, which represent a danger for the intervening firefighting teams.
  • Another fundamental problem is the protective cover of the battery, which, logically, prevent any simple approach of the cooling liquid.
  • the whole procedure of the fire extinguishing is then in fact based on cooling, which creates another problem, the need of a large quantity of cooing water and in effect a vessel, or a container for placing the battery (in most cases the whole vehicle with the battery) in to undergo the cooling process.
  • the cooling process may obviously last for dozens of hours before the unwanted thermochemical reactions get under control.
  • there are further accompanying problems such as where to place the container for the cooling process, the need to stop traffic on the road etc. And, last but not least, what to do with the large amount of contaminated liquid as the undesirable product of the cooling process.
  • the proposed equipment is based on a spreading device 14 commonly used in repairs of bodywork of passenger cars, vans and trucks, but also in emergency situations when the crashed vehicle needs to be stabilized, obstacles in the form of parts of the bodywork need to be eliminated as they prevent access to areas where persons affected by the vehicle crash may be present and may need rescue. This is followed, in the case of need, by elimination of sources of potential fire, i.e. intervention directed against the battery.
  • the spreading devices 14 can be used for extension, compression, lifting and stretching in vertical and horizontal directions.
  • the device can be equipped with a number of additional accessories for different purposes, e.g. with a chain set for removing extremely heavy obstacles and loads, most often used during rescue work in traffic accidents to lift the steering wheel bar and the dashboard at the same time, or to pull back the seats, with accessories for rescue from erected structures to lift or pull loads, etc., and further with hydraulic shears for cutting body parts or a hydraulic wedge for opening doors.
  • the fire extinguishing accessory to the spreader bar of a hydraulic or electrical wrecking equipment designed for extinguishing electric car batteries is designed for a broad portfolio of spreaders of different types by different manufacturers.
  • the designed device comprises an upper extension piece 1 and a lower extension piece 2, assembled in a detachable manner with a first and a second spreader arm 3, 8.
  • the upper extension piece 1 is provided with a holder 4 of the extinguishing spike 6 on its free end, the said holder being connected to a fire extinguishing agent inlet 5.
  • the holder 4 of the extinguishing spike 6 is used to fix the fire extinguishing agent inlet 5 and the extinguishing spike 6 itself to the upper extension piece 1.
  • An exemplary fire extinguishing agent inlet 5 is assembled of threaded fittings, not excluding a separate piece, or more pieces of suitably shaped pipes, and ended with a quick-release clamp for a firefighting hose connection.
  • the extinguishing spike 6 is easily replaceable. Its fixation is provided by a mounting element 7, in this exemplary embodiment represented by a swivel nut.
  • the here described connection of the extinguishing spike 6 is one of many usable for this purpose, the described one being the simplest and the most suitable way. Other structural modifications are neither limited nor excluded by this arrangement.
  • the jet extinguishing spike 6 is hollow and holes in its bottom section allow the fire extinguishing agent flow into the batteries.
  • the special shape of the jet extinguishing spike 6 is designed so that to minimize the forces needed to make the hole in the car floor metal sheet and in the battery cover. By this is meant the shape of that part of the extinguishing spike 6 which faces outwards from the operator and substantially follows the movement trajectory of the end of the upper extension piece 1 when the spreader arms 3, 8 close.
  • the backing plate 9 mounted on the lower extension piece 2 is supported on one side of the cover of the subject extinguished battery and on the opposite side an opening is formed by the extinguishing spike 6, whereupon a liquid extinguishing agent is introduced under the battery cover through the opening by means of nozzles in the extinguishing spike 6, and for this purpose the proposed rescue extinguishing device is connected by means of hoses to a source of the liquid fire extinguishing agent (not shown).
  • the extinguishing extension pieces 1, 2 are connected to the spreading device and fixed by fixation elements, wherein extension pieces 1, 2 are fixed to the spreader arms 3, 8 of the spreading device by a hole or another shaped element adapted to receive a fixation pivot, a spring pin or another fixation element by which the given type of the spreading device is equipped.
  • the shape of the extinguishing spike 6 and the method of its fixation are designed for the lateral forces acting on the extinguishing spike 6 while the spike penetrates the floor and inside the battery to be symmetrical. That excludes bending stress of the extinguishing spike 6 that might lead to its breaking.
  • the upper extension piece 1. may be provided with multiple spikes 6 or there may also be a spike 6 on the lower extension piece 2, in the basic version only serving as a support element.
  • the proposed arrangement of the extension pieces 1, 2 mainly comprises replaceable parts for easy replacement or worn or destructed parts.

Landscapes

  • Health & Medical Sciences (AREA)
  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Public Health (AREA)
  • General Health & Medical Sciences (AREA)
  • Battery Mounting, Suspending (AREA)

Abstract

A device for extinguishing batteries placed in cover consisting of a spreading tool with two spreader arms. The two opposite spreader arms of the said spreading tool bear an upper extension piece and a lower extension piece. The upper extension piece is provided, on its opposite, non-attached end, with a fire extinguishing agent inlet connected to a fire extinguishing liquid source, wherein an extinguishing spike is connected to the fire extinguishing agent inlet with a fixation element, the said fire extinguishing agent inlet being connected to the said end of the upper extension piece with a holder of the extinguishing spike, and the lower extension piece being provided, on its support clamping surface, with a backing plate.

Description

A device for extinguishing bateries placed in cover
Field of Invention
The invention concerns extinguishing of batteries placed in cover and used as electrical energy sources for various applications, for example in electric cars.
State of Art
At present, one of the basic issues connected with the extinguishing of fires is direct elimination of the fire as close as possible to its source. This is especially true in the area of electric vehicles currently experiencing a big boom. The main problem in this area is the potential source of fire in the electric battery where, due to a design error or as a result of a road accident, the battery skeleton and therefore the electrochemical cells may be damaged. This is addressed by a number of methods in which the key is first to get as close to the battery as possible through the vehicle bodywork, then to enter the battery pack or casing inside to reach the system of individual electrochemical cells, and finally to perform the required extinguishing or cooling operation. The basic principle is thus basically always a forced penetration into the inner part of the batery case. This is done by a number of methods, also based on the use of prior art.
Among the well-known solutions, there is a device by Rosenbauer International AG, Austria, which consists of two parts, the first being a fire extinguishing device with an extendable spike and the second part being the device control unit. The device is based on the principle of pushing the spike through the chassis/battery cover into the battery compartment, using the weight of the vehicle as a force acting against the spike, the base of which rests on a solid surface under the vehicle. When the spike enters the battery, a liquid fire extinguishing agent is distributed across the battery compartment.
A theoretical advantage is the extinguishing spike penetration from the vehicle outside to its inside. On the other hand, most electric vehicles are provided with a reinforced floor and a protective cover over the batery so that the batery compartment casing cannot be pierced in a road accident. This is therefore the strongest part of the electric vehicle, where considerable resistance must be overcome. A certain disadvantage is that the above described principle can only be applied to a vehicle standing on a solid ground with the wheels down. On the other hand, when the vehicle lies on its side or is upside down lying on its roof, or is located in a place where the extinguishing unit cannot be inserted under the chassis to use the support of a solid ground, this device cannot be used successfully. Complications can also arise when tires burn through and the ground clearance of the vehicle is so low that the extinguisher cannot be placed under the battery cover.
Another possible approach is to use a spike and run it mechanically through the vehicle floor in the vehicle interior. For this purpose, a hollow spike on a longer extension rod is used, which is then pushed into the battery compartment in the floor with the help of a ram and then the fire in the compartment is extinguished with a liquid extinguishing agent. One disadvantage of this method is the necessary assistance of two persons wherein one holds the spike and the other hammers the spike with the ram into the chassis from in the vehicle cab. A certain problem with this solution is the limited space for manipulation in the cab and after the spike is driven into the battery compartment, the pressure of the extinguishing agent may cause the spike to loosen and fall out of the punched hole and cause the battery to burn uncontrollably.
The most common procedure is to extinguish the vehicle with a stream of water and further cool it with a larger volume of water distributed from the jet across the vehicle chassis until the temperature of the battery drops below a safe temperature limit After that the vehicle is placed in a special container and immersed in water up to the battery top height. A disadvantage of this extinguishing method is the large volume of water and the presence of the acting fire-fighters in a close proximity to the vehicle, which represents a relatively high risk of injury. Another problematic aspect of the intervention is a big volume of contaminated water, and in some cases, when the vehicle is located in an underground garage, its pulling out and placing in the container, which is very demanding technically.
The prior art solutions have a number of disadvantages following from the fire-fighting techniques used, the type of the vehicle being extinguished, the location and progress of the fire etc. This is further worsened, in most intervention cases, by the need for a considerable quantity of cooling liquid, which is contaminated after use, and a high time demand, but above all by the possible threat to the lives of the fire-fighters or people from around the burning vehicle. Summary of invention
These aforementioned disadvantages are eliminated by a device for extinguishing batteries placed in cover consisting of an spreading tool having two spreader arms, the essence of which is that an upper extension piece and a lower extension piece are fixed on the two opposite spreader arms of the said spreading tool, the upper extension piece being provided, on its opposite, non-attached end, with a fire extinguishing agent inlet connected to a source of an extinguishing fluid, wherein an extinguishing spike is fixed with a holder element to the fire extinguishing agent inlet, wherein this fire extinguishing agent inlet is connected by the extinguishing spike holder at the upper extension piece end, and wherein the lower extension piece is provided with a backing plate on the supporting clamping surface.
The backing plate is preferably provided with grooving.
The upper extension piece is preferably composed and firmly assembled of identical mirrored parts.
The lower extension piece is preferably composed and firmly assembled of identical mirrored parts.
The advantage of the proposed solution is in the effective handling of the fire extinguishing agent stream and its introduction directly into the battery without any complicated creation of an entry for the extinguishing agent, and thus in the reduced danger for the acting firefighters represented by potential contact with the burning vehicle.
Explanation of Drawings
The present invention will be described in detail with reference to images showing: Fig. 1 - a device for extinguishing batteries placed in cover - overall view
Fig. 2 - a device for extinguishing batteries placed in cover (a side view, an outline, an axonometric view)
Fig. 3 - an upper extension piece provided with a fire extinguishing agent inlet (a side view, an outline, an axonometric view)
Fig. 4 - a lower extension piece provided with a backing plate (a side view, an outline, an axonometric view) Examples of Invention Embodiments
The source of fires in electric cars is in the vast majority of cases their battery, consisting of a large number of small cells connected to larger modules in which energy is stored to drive the electric motor. The solution to this problem then consists of several stages of activities that follow each other in order to effectively combat the dangerous situation. First of all, after getting acquainted with the situation and obtaining information about the vehicle and its design, especially with regard to the location of the batteries, it is necessary to obtain information about or locate the battery and the access route to it or the necessary procedure to obtain a direct route to the battery by punching through the bodywork and the necessary removal of the parts of the vehicle preventing access to the battery. Then comes the subsequent stage of liquidation directly at the source, so to speak, i.e. piercing the enclosure surrounding the set of electrochemical power sources. This intention of forcible penetration then implies a requirement for the technical equipment of the tools designed for the desired target, i.e. a requirement for mechanical tools designed to forcibly cut a path, and then a requirement for the extinguishing stage of introducing the cooling and extinguishing fluid.
By design, the whole battery is firmly enclosed and protected against impact and external influences by a protective cover. If the enclosure integrity is compromised, for example In a road accident or by penetration of a salty solution, some of the cells inside can be short- circuited, with a consequence of generation of a considerable amount of thermal energy followed by fire. This may not necessarily be caused by an accident, or by mechanical damage, but the causes may also include a design error or a technical defect in the electrical installation, again causing overheating and fire from the battery.
At these moments, a short circuit between the hermetically sealed cells in the enclosure gives rise to a condition/problem wherein the temperature of the battery rises in leaps in an uncontrolled manner and the thermal energy in the battery immediately begins to spread. The consequence of this uncontrolled process is subsequent short circuiting of other cells - a chain reaction - and spread of thermal energy across the vehicle structure. At a certain stage, the fire can no longer be prevented and only its consequences can be addressed. Therefore, firefighters cannot extinguish the fire directly, but can basically just cool the batery, which is why some vehicles end up sunk in a container of coolant, i.e. water.
One of the primary underlying problems is that the electric vehicle contains high-voltage operating circuits, which represent a danger for the intervening firefighting teams. Another fundamental problem is the protective cover of the battery, which, logically, prevent any simple approach of the cooling liquid. The whole procedure of the fire extinguishing is then in fact based on cooling, which creates another problem, the need of a large quantity of cooing water and in effect a vessel, or a container for placing the battery (in most cases the whole vehicle with the battery) in to undergo the cooling process. The cooling process may obviously last for dozens of hours before the unwanted thermochemical reactions get under control. And there are further accompanying problems such as where to place the container for the cooling process, the need to stop traffic on the road etc. And, last but not least, what to do with the large amount of contaminated liquid as the undesirable product of the cooling process.
This suggests a solution wherein after preparatory works, such as disconnecting electrical circuits, etc., cooling takes place inside the battery, i.e. there is the need to cut or puncture the battery cover. The ideal solution that offers itself for this purpose is the use of a hydraulic or electro-hydraulic spreading tool with a fire-extinguishing extension piece according to the present invention, an example of which is provided and described by the attached images in the attached drawing.
The following can be said about this tool using the wording of CSN EN 13204+A1 standard: "Hydraulic wrecking equipment is intended for use by fire protection units, in particular for cutting, opening or pushing aside structural parts of road vehicles, rolling stock, aircraft, ships and buildings. This equipment comprises a separate drive unit, a tool (tools), the necessary connecting lines and accessories."
The proposed equipment is based on a spreading device 14 commonly used in repairs of bodywork of passenger cars, vans and trucks, but also in emergency situations when the crashed vehicle needs to be stabilized, obstacles in the form of parts of the bodywork need to be eliminated as they prevent access to areas where persons affected by the vehicle crash may be present and may need rescue. This is followed, in the case of need, by elimination of sources of potential fire, i.e. intervention directed against the battery.
The spreading devices 14 can be used for extension, compression, lifting and stretching in vertical and horizontal directions. Depending on type, the device can be equipped with a number of additional accessories for different purposes, e.g. with a chain set for removing extremely heavy obstacles and loads, most often used during rescue work in traffic accidents to lift the steering wheel bar and the dashboard at the same time, or to pull back the seats, with accessories for rescue from erected structures to lift or pull loads, etc., and further with hydraulic shears for cutting body parts or a hydraulic wedge for opening doors. The fire extinguishing accessory to the spreader bar of a hydraulic or electrical wrecking equipment designed for extinguishing electric car batteries, is designed for a broad portfolio of spreaders of different types by different manufacturers. Spreader bars are an absolutely common and widespread firefighting technique practically all over the world. A spreader bar with these accessories can be used to make a hole in the cab floor from inside in the place of the driver or front passenger seat or from other places depending on the actual position of the vehicle. A hollow extinguishing spike_6 then punches the battery module cover and permits feeding liquid fire extinguishing agent inside via the spike from a mobile firefighting cistern, hydrant or from another suitable source.
The designed device comprises an upper extension piece 1 and a lower extension piece 2, assembled in a detachable manner with a first and a second spreader arm 3, 8. The upper extension piece 1 is provided with a holder 4 of the extinguishing spike 6 on its free end, the said holder being connected to a fire extinguishing agent inlet 5.
The holder 4 of the extinguishing spike 6 is used to fix the fire extinguishing agent inlet 5 and the extinguishing spike 6 itself to the upper extension piece 1. An exemplary fire extinguishing agent inlet 5 is assembled of threaded fittings, not excluding a separate piece, or more pieces of suitably shaped pipes, and ended with a quick-release clamp for a firefighting hose connection. The extinguishing spike 6 is easily replaceable. Its fixation is provided by a mounting element 7, in this exemplary embodiment represented by a swivel nut. The here described connection of the extinguishing spike 6 is one of many usable for this purpose, the described one being the simplest and the most suitable way. Other structural modifications are neither limited nor excluded by this arrangement.
The jet extinguishing spike 6 is hollow and holes in its bottom section allow the fire extinguishing agent flow into the batteries. The special shape of the jet extinguishing spike 6 is designed so that to minimize the forces needed to make the hole in the car floor metal sheet and in the battery cover. By this is meant the shape of that part of the extinguishing spike 6 which faces outwards from the operator and substantially follows the movement trajectory of the end of the upper extension piece 1 when the spreader arms 3, 8 close.
The rescue equipment is designed so that using a hydraulically driven piston, two identical opposite spreader arms 3, 8 with extension pieces 1, 2 symmetrically open thanks to mechanical articulations, thereby spreading objects apart. In our case, the closing of the spreader arms 3, 8 is also performed hydraulically and mechanically by an opposite movement of the piston. The backing plate 9 mounted on the lower extension piece 2 is supported on one side of the cover of the subject extinguished battery and on the opposite side an opening is formed by the extinguishing spike 6, whereupon a liquid extinguishing agent is introduced under the battery cover through the opening by means of nozzles in the extinguishing spike 6, and for this purpose the proposed rescue extinguishing device is connected by means of hoses to a source of the liquid fire extinguishing agent (not shown).
A control handle 11 bears an inlet 10 of hydraulic fluid coming from a connected pressure hose. The whole device is handled by a handling grip 12 and the control handle H. Another hose feeding the fire extinguishing liquid agent is connected to the fire extinguishing agent inlet 5 in the extinguishing spike 6 with holes for injection of the fire extinguishing liquid agent into the extinguished or cooler compartment under the battery cover.
The lower extension piece 2 is provided with a backing place 9 essentially opposite to the upper extension piece 1. When the floor is being pierced, the backing plate 9 leans against the bottom cover of the battery compartment/chassis, and for that reason the backing plate is grooved to improve friction properties of its contact surface.
Both extension pieces 1, 2 are provided with fixation elements adapted to the spreader bar fixation element shape. These fixation elements vary across the spreader bar type range. The two extension pieces 1, 2 can be constructed in different ways, or one, two or multiple pieces, differently profiled etc. In the exemplary embodiment pursuant to the present invention the extension pieces 1, 2 are arranged and assembled of two identical mirrored parts.
The extinguishing extension pieces 1, 2 are connected to the spreading device and fixed by fixation elements, wherein extension pieces 1, 2 are fixed to the spreader arms 3, 8 of the spreading device by a hole or another shaped element adapted to receive a fixation pivot, a spring pin or another fixation element by which the given type of the spreading device is equipped. The shape of the extinguishing spike 6 and the method of its fixation are designed for the lateral forces acting on the extinguishing spike 6 while the spike penetrates the floor and inside the battery to be symmetrical. That excludes bending stress of the extinguishing spike 6 that might lead to its breaking. For a beter extinguishing effect, the upper extension piece 1. may be provided with multiple spikes 6 or there may also be a spike 6 on the lower extension piece 2, in the basic version only serving as a support element. The proposed arrangement of the extension pieces 1, 2 mainly comprises replaceable parts for easy replacement or worn or destructed parts.
On the device side, there are more (not shown) hoses connected to the extinguishing/cooling medium source.
The rescue equipment is designed so that using a hydraulically driven piston, two identical opposite spreader arms 3, 8 with extension pieces 1, 2 symmetrically open thanks to mechanical articulations, thereby spreading objects apart. In our case, the closing of the spreader arms 3, 8 is also performed hydraulically and mechanically by an opposite movement of the piston.
On one side of the cover of the subject extinguished battery there is the backing plate 9 on the lower spreader arm 8 leaning against a support surface and on the other side there is a hole made by the extinguishing spike 6, through which the nozzles in the extinguishing spike_6 introduce the extinguishing liquid under the battery cover.
Industrial Applicability
The device is applicable in dealing with emergency situations after accidents of electric vehicles when batteries stored in an enclosure begin to burn.
It should be borne in mind that the solution described herein is an exemplary embodiment which does not exclude from the protection according to the present invention any other modifications of the arrangement of the individual parts, as well as the connections or interconnections of the individual elements. list of reference numerals
1 - upper extension piece
2 - lower extension piece
3 - first spreader arm - extinguishing spike holder
5 - fire extinguishing agent inlet 6 - extinguishing spike 7 fixation element second spreader arm 9 backing plate
10 - hydraulic fluid entry - connection to pressure hose
11 - control handle 2 - handling grip 3 - fire extinguishing liquid entry 4 - spreading device

Claims

Claims
1. A device for extinguishing burning batteries placed in cover, comprising a spreading tool with two spreader arms (3, 8), characterized in that the two opposite spreader arms (3, 8) of the said spreading tool hold an upper extension piece (1) and a lower extension piece (2), wherein the upper extension piece (1) is provided, on its opposite end, with a fire extinguishing agent inlet (5) connected to a fire extinguishing liquid source, wherein an extinguishing spike (6) is connected to the fire extinguishing agent inlet (5) with a fixation element (7), the said fire extinguishing agent inlet (5) being connected to the said end of the upper extension piece (1) with a holder (4) of the extinguishing spike (6), and the lower extension piece (2) being provided, on its support clamping surface, with a backing plate (9).
2. A device for extinguishing burning batteries pursuant to claim 1 , characterized in that the backing plate (9) is provided with grooving.
3. A device for extinguishing burning batteries according to any of the previous claims 1 and 2, characterized in that the upper extension piece (1) is arranged and firmly assembled of two identical mirrored parts.
4. A device for extinguishing burning batteries according to any of the previous claims 1, 2 and 3, characterized in that the lower extension piece (2) is arranged and firmly assembled of two identical mirrored parts.
EP24708346.2A 2023-02-08 2024-02-07 A device for extinguishing batteries placed in cover Pending EP4626559A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CZ2023-48A CZ310535B6 (en) 2023-02-08 2023-02-08 An equipment to extinguish batteries located in a housing
PCT/CZ2024/000002 WO2024165090A1 (en) 2023-02-08 2024-02-07 A device for extinguishing batteries placed in cover

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EP4626559A1 true EP4626559A1 (en) 2025-10-08

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EP24708346.2A Pending EP4626559A1 (en) 2023-02-08 2024-02-07 A device for extinguishing batteries placed in cover

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EP (1) EP4626559A1 (en)
CZ (1) CZ310535B6 (en)
WO (1) WO2024165090A1 (en)

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4271909A (en) * 1978-12-18 1981-06-09 American Fire And Industrial Products Company Modular fire fighting apparatus
US6311537B1 (en) * 1998-10-30 2001-11-06 Orlando C. Vigil Blade tip for a rescue tool
AT523484B1 (en) * 2020-01-22 2023-06-15 Rosenbauer Int Ag Method and penetration unit for introducing a fluid into a battery and vehicle equipped therewith

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CZ202348A3 (en) 2024-08-21
CZ310535B6 (en) 2025-10-29
WO2024165090A1 (en) 2024-08-15

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