CN110465037B - Fire extinguishing device for battery box of electric vehicle - Google Patents
Fire extinguishing device for battery box of electric vehicle Download PDFInfo
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- CN110465037B CN110465037B CN201910816881.7A CN201910816881A CN110465037B CN 110465037 B CN110465037 B CN 110465037B CN 201910816881 A CN201910816881 A CN 201910816881A CN 110465037 B CN110465037 B CN 110465037B
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- cylinder body
- fire extinguishing
- piston
- screw rod
- battery box
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- 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
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- 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
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- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62C—FIRE-FIGHTING
- A62C37/00—Control of fire-fighting equipment
- A62C37/36—Control of fire-fighting equipment an actuating signal being generated by a sensor separate from an outlet device
- A62C37/38—Control of fire-fighting equipment an actuating signal being generated by a sensor separate from an outlet device by both sensor and actuator, e.g. valve, being in the danger zone
- A62C37/40—Control of fire-fighting equipment an actuating signal being generated by a sensor separate from an outlet device by both sensor and actuator, e.g. valve, being in the danger zone with electric connection between sensor and actuator
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- Health & Medical Sciences (AREA)
- Public Health (AREA)
- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Fire-Extinguishing By Fire Departments, And Fire-Extinguishing Equipment And Control Thereof (AREA)
Abstract
The invention discloses a fire extinguishing device for a battery box of an electric automobile, which comprises a cylinder body and a screw rod arranged in the cylinder body, wherein a piston is sleeved on the screw rod, the circumference of the piston is in sealed sliding fit with the inner wall of the cylinder body, a driving device is connected on the screw rod, and when the driving device drives the screw rod to rotate, the piston slides in the cylinder body; and the two ends of the cylinder body are respectively provided with a nozzle and an air pressure balance nozzle. The invention drives the piston to move in the cylinder body through the rotation of the screw rod, and utilizes the piston to push the fire extinguishing agent in the cylinder body to be sprayed out from the nozzle, thereby providing the fire extinguishing device of the battery box of the electric automobile, which has compact structure, can continuously and controllably push the fire extinguishing agent, and has the characteristics of ingenious conception, easy production, low production cost and the like.
Description
Technical Field
The invention belongs to the technical field of fire extinguishing devices, and particularly relates to a fire extinguishing device for a battery box of an electric automobile.
Background
At present, the power of an electric automobile motor mainly comes from a storage battery, the storage battery is generally fixed on the electric automobile in a battery pack mode, and a battery box needs to be placed in the fixing process of the battery pack and is fixed on the automobile body. Traditional batteries of electric vehicle system extinguishing device sets up in the battery box outside, when the battery catches fire, needs manual operation to insert the fire extinguishing mouth of design on the battery box with the fire extinguisher spout, spouts the fire extinguishing medium into and puts out a fire. There are problems in that: the fire extinguishing device needs manual operation, cannot directly go deep into a fire point, and cannot effectively extinguish fire in time.
The NOVEC1230 fire extinguishing agent (hereinafter referred to as 1230 fire extinguishing agent) is used as a fire extinguishing agent which can be stored in a liquid state at normal pressure, is immediately gasified after being sprayed out and absorbs a large amount of heat, and becomes a non-alternative fire extinguishing agent applied to the battery box of the electric automobile due to the advantages of high fire extinguishing efficiency, no corrosion, low toxicity, strong insulation, low storage pressure, good transportation performance and the like.
The existing 1230 fire extinguishing agent adopts gas to push and spray out to extinguish fire, and mainly utilizes pressurized inert gas or gas generating agent as a driving source. The high-pressure gas tank or the gas pressurizing device is required to be arranged by taking pressurized gas as a driving source, so that the fire extinguishing device is high in danger, not only is not compact in overall structure, heavy in mass, large in size and large in occupied space, but also cannot be used for extinguishing the electric automobile battery box due to the limitation of a narrow closed space in the battery box, and cannot be set with large extinguishing agent capacity. The gas-producing agent is used as a driving source, although the structure is compact and is beneficial to the control of occupied space, the gas-producing agent can only produce excessive high pressure, can not provide continuous and reliable high pressure, also limits the large-capacity use of the fire extinguishing agent, and can not control the pressure and flexibly start and stop. Moreover, the existing gas pushing mode can only finish 1230 filling of the fire extinguishing agent in a factory, and the fire extinguishing agent cannot be reused.
There are also some technologies for automatic fire extinguishing of a battery box of an electric vehicle, such as patent document CN207401039U, which provides an automatic fire extinguishing device for a battery box, wherein a 1230 fire extinguishing agent is packaged in a containing cavity, through holes covered with a thermoplastic material are provided in the containing cavity, the thermoplastic material is heated and softened to form a break after the battery is ignited, so that the fire extinguishing agent is automatically released to extinguish the fire, although theoretically, the automatic fire extinguishing can be realized, but the time for the thermoplastic material to be heated and softened is long, and the fire in the battery box of the electric vehicle cannot be effectively extinguished in time.
Disclosure of Invention
Aiming at the defects in the prior art, the invention aims to provide a fire extinguishing device for an electric vehicle battery box, which has a compact structure and can continuously and controllably push a fire extinguishing agent.
The technical purpose of the invention is realized by the following technical scheme: a fire extinguishing device for an electric vehicle battery box comprises a cylinder body and a screw rod arranged in the cylinder body, wherein a piston is sleeved on the screw rod, the circumference of the piston is in sealed sliding fit with the inner wall of the cylinder body, a driving device is connected on the screw rod, and when the driving device drives the screw rod to rotate, the piston slides in the cylinder body; and the two ends of the cylinder body are respectively provided with a nozzle and an air pressure balance nozzle.
Adopt above-mentioned structure, rotate through the lead screw and drive the piston and remove in the cylinder body to utilize the fire extinguishing agent in the piston promotion cylinder body from the nozzle blowout, atmospheric pressure balance mouth inhales gas simultaneously and carries out pressure balance to piston both sides in the cylinder body, thereby provides the extinguishing device of an electric automobile battery box, mainly has following advantage:
only the piston and the screw rod occupy space in the cylinder body, and the rest space can be used for containing the fire extinguishing agent, so that the whole fire extinguishing device is compact in structure, the use of narrow installation space of an electric vehicle battery box is facilitated, and meanwhile, the capacity of the fire extinguishing agent is expanded, and continuous fire extinguishing is facilitated;
secondly, the fire extinguishing agent is extruded and sprayed out by utilizing the pressure provided by the movement of the piston, when the piston does not move, the fire extinguishing agent is stored in the cylinder body without pressure, the leakage of the fire extinguishing agent can be effectively avoided by directly utilizing the nozzle, the whole fire extinguishing device is not provided with a high-pressure structure, the use is safer, and the safety of the battery box of the electric automobile is higher;
the movement and the stop of the piston can be controlled by the driving device, and the movement speed of the piston can be controlled by the driving device, so that the spraying time and the spraying speed of the fire extinguishing agent can be controlled conveniently, the fire extinguishing agent in the battery box can be fully utilized, the fire extinguishing efficiency can be improved, the spraying of the fire extinguishing agent can be controlled more continuously, and the fire extinguishing operation is more flexible;
thirdly, the sensing device is matched with the sensing device which is correspondingly arranged, and the sensing device is linked with the control device of the driving device, so that the realization of automatic fire extinguishing is facilitated, the use is more convenient, and the fire source in the battery box can be extinguished in time;
driving the piston to move towards one end far away from the nozzle through the screw rod, so that the fire extinguishing agent can be sucked 1230 from the nozzle, the fire extinguishing agent can be conveniently filled, and the filling process can effectively isolate water vapor, so that the fire extinguishing device can be repeatedly used;
fifthly, the fire extinguishing device is matched with the sensor, and the 1230 fire extinguishing agent is used, so that the fire source in the battery box can be effectively extinguished in time.
The piston is eccentrically sleeved on the screw rod, the piston is in threaded fit with the screw rod, and the sealing ring is clamped and arranged on the side wall of the piston. Like this with piston and the eccentric suit of lead screw, utilize the cylinder body inner wall to restrict the rotation of piston, can effectively avoid the piston to rotate along with the lead screw, ensure that the lead screw rotates the drive piston and removes, need not set up the guide structure of piston in addition, not only make overall structure simpler, compact, effectively avoided guide structure to the occuping of fire extinguishing agent storage space moreover, be favorable to improving the capacity of fire extinguishing agent, the simple structure of piston and cylinder body on the one hand again, production is easy, convenient assembling.
The driving device comprises a motor positioned outside the cylinder body, and an output shaft of the motor is in transmission with one end of the screw rod through a gear and/or a speed reducer. The driving device has simple and compact structure.
And a Hall encoder is arranged on the motor and is in signal connection with a motor control device. The Hall encoder is arranged to read the revolution of the motor, the linear pushing range of the screw rod can be detected through the revolution of the motor, signals are sent to the control device of the motor, and the motor control device can conveniently acquire the sprayed and remaining amount of the fire extinguishing agent and respond accordingly. During daily detection, the motor can be controlled to rotate forwards and backwards for one circle (the distance of the piston moving when the motor rotates for one circle is not enough to push the fire extinguishing agent to be sprayed out), and whether the motor control device is normal or not can be detected through data read by the Hall encoder acquired by the motor control device.
The cylinder body has a plurality ofly along length direction butt joint to install the joint between adjacent cylinder body, the joint cuts off the inner chamber of adjacent cylinder body, and the piston in the adjacent cylinder body passes through the push rod and connects, the push rod pass corresponding joint and with connect between the sealed sliding fit, when the piston in the lead screw drive one of them tip cylinder body slided, the piston in all cylinder bodies passes through the push rod linkage. Set up the relatively independent cylinder body of a plurality of inner chambers like this to pass through the push rod linkage with the piston in a plurality of cylinders bodies, not only be favorable to expanding extinguishing device's capacity, be favorable to the multiple spot position blowout of fire extinguishing agent moreover.
Preferably, the air pressure balancing nozzles of the cylinders are arranged on the joint at the front end of the cylinder from the cylinder inserted with the screw rod to the rear end of the cylinder, and the nozzle of each cylinder is arranged on the joint at the rear end of the cylinder.
Preferably, the two cylinders are butted along the length direction.
Preferably, the nozzle is a self-sealing nozzle. Adopt the nozzle of self sealss, not only can seal the fire extinguishing agent who stores in the cylinder body in order to improve its storage time, can improve fire extinguishing agent spun pressure with the piston cooperation moreover.
Has the advantages that: the invention drives the piston to move in the cylinder body through the rotation of the screw rod, and utilizes the piston to push the fire extinguishing agent in the cylinder body to be sprayed out from the nozzle, thereby providing the fire extinguishing device of the battery box of the electric automobile, which has compact structure, can continuously and controllably push the fire extinguishing agent, and has the characteristics of ingenious conception, easy production, low production cost and the like.
Drawings
In order to more clearly illustrate the detailed description of the invention or the technical solutions in the prior art, the drawings that are needed in the detailed description of the invention or the prior art will be briefly described below. Throughout the drawings, like elements or portions are generally identified by like reference numerals. In the drawings, elements or portions are not necessarily drawn to scale.
Fig. 1 is a schematic structural diagram according to an embodiment of the present invention.
Fig. 2 is a state diagram of fig. 1.
Reference numerals: the device comprises a motor 1, an air pressure balance nozzle 2, a piston 3, a nozzle 4, a Hall encoder 5, a screw rod 6, a push rod 7, a joint 8 and a cylinder body 9.
Detailed Description
Embodiments of the present invention will be described in detail below with reference to the accompanying drawings. The following examples are only for illustrating the technical solutions of the present invention more clearly, and therefore are only examples, and the protection scope of the present invention is not limited thereby.
It is to be noted that, unless otherwise specified, technical or scientific terms used herein shall have the ordinary meaning as understood by those skilled in the art to which the invention pertains.
As shown in fig. 1 and 2, the present embodiment provides a fire extinguishing apparatus for a battery box of an electric vehicle, which includes an elongated cylinder 9 with two closed ends and a screw rod 6 installed in the cylinder 9. The screw rod 6 is sleeved with a piston 3, the piston 3 is eccentrically sleeved on the screw rod 6, the piston 3 is in threaded fit with the screw rod 6, and a sealing ring is clamped in a groove on the peripheral side wall of the piston 3, so that the peripheral side of the piston 3 is in sealed sliding fit with the inner wall of the cylinder 9. The screw rod 6 is connected with a driving device, and when the driving device drives the screw rod 6 to rotate, the piston 3 slides in the cylinder 9. The driving device comprises a motor 1 positioned outside a cylinder body 9, an output shaft of the motor 1 is in transmission with one end of a screw rod 6 through a gear and/or a speed reducer, and preferably, the output shaft of the motor 1 is in speed reduction transmission with two gears to the screw rod 6 in the embodiment. The motor 1 is provided with a Hall encoder 5, and the Hall encoder 5 is in signal connection with a control device of the motor 1. The signal connection is the prior art, and the specific manner is not limited, and may be a signal line connection or a wireless signal connection. The control device of the motor 1 may be a control device provided relatively independently, or may be a module provided in a control system of an electric vehicle, which is not limited herein. And the two ends of the cylinder body 9 are respectively provided with a nozzle 4 and an air pressure balance nozzle 2.
As shown in fig. 1 and 2, in order to expand the capacity of the fire extinguishing apparatus and realize multi-point spraying of the fire extinguishing agent, a plurality of cylinders 9 are butted along the length direction, and a joint 8 is installed between adjacent cylinders 9, and the joint 8 separates the inner cavities of the adjacent cylinders 9. The pistons 3 in the adjacent cylinders 9 are connected through push rods 7, the push rods 7 penetrate through the corresponding joints 8 and are in sealing sliding fit with the joints 8, so that only one cylinder 9 needs to be provided with the lead screw 6, and when the lead screw 6 drives the pistons 3 in the cylinder 9 to slide, the pistons 3 in all the cylinders 9 can be linked through the push rods 7. The embodiment preferably has only one of the cylinders 9 at the end provided with a screw 6. The structure and the position of the push rod 7 are not limited, in order to make the whole structure more compact and the assembly more convenient, the push rod 7 in the cylinder 9 with the screw rod 6 is sleeved outside the screw rod 6 in a tubular shape, and the arrangement can also utilize the tubular push rod 7 to protect the matching between the screw rod 6 and the piston 3; other push rods 7 can be arranged in a thin rod shape to improve the capacity of the fire extinguishing agent.
As shown in fig. 1 and 2, when a plurality of cylinder bodies 9 are adopted, joints 8 are also arranged at the outer ends of the cylinder bodies 9 at two ends to realize the sealing of the end parts of the cylinder bodies 9; further, the air pressure equalizing nozzles 2 of the respective cylinders 9 are provided at the joint 8 at the front end of the cylinder 9 from the cylinder 9 into which the lead screw 6 is inserted and backward, and the nozzles 4 of the respective cylinders 9 are provided at the joint 8 at the rear end of the cylinder 9. In this embodiment, two cylinders 9 are preferably butted in the length direction.
As shown in fig. 1 and 2, the nozzle 4 may be a conventional fire extinguisher nozzle 4, or may be a commercially available self-sealing nozzle having a spring plug structure therein. In this embodiment, the fire extinguishing agent filled in the cylinder 9 is 1230 fire extinguishing agent, and the nozzle 4 is a self-sealing nozzle.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention, and they should be construed as being included in the following claims and description.
Claims (6)
1. The utility model provides a extinguishing device of electric automobile battery box, characterized by: the cylinder comprises a cylinder body and a screw rod arranged in the cylinder body, wherein a piston is sleeved on the screw rod, the periphery of the piston is in sealed sliding fit with the inner wall of the cylinder body, a driving device is connected on the screw rod, and when the driving device drives the screw rod to rotate, the piston slides in the cylinder body; the two ends of the cylinder body are respectively provided with a nozzle and a pressure balancing nozzle; the multiple cylinder bodies are in butt joint along the length direction, the joints are arranged between the adjacent cylinder bodies, the joints separate inner cavities of the adjacent cylinder bodies, the pistons in the adjacent cylinder bodies are connected through the push rods, the push rods penetrate through the corresponding joints and are in sealed sliding fit with the joints, and when the lead screw drives the piston in one end cylinder body to slide, the pistons in all the cylinder bodies are linked through the push rods; the piston is eccentrically sleeved on the screw rod, the piston is in threaded fit with the screw rod, and the sealing ring is clamped and arranged on the side wall of the piston.
2. The fire extinguishing apparatus for the battery box of the electric vehicle as claimed in claim 1, wherein: the driving device comprises a motor positioned outside the cylinder body, and an output shaft of the motor is in transmission with one end of the screw rod through a gear and/or a speed reducer.
3. The fire extinguishing apparatus for the battery box of the electric vehicle as claimed in claim 2, wherein: and a Hall encoder is arranged on the motor and is in signal connection with a motor control device.
4. The fire extinguishing apparatus for the battery box of the electric vehicle as claimed in claim 1, wherein: the air pressure balancing nozzles of the cylinder bodies from the cylinder body inserted with the screw rod to the back are all arranged on the joint at the front end of the cylinder body, and the nozzle of each cylinder body is arranged on the joint at the back end of the cylinder body.
5. The fire extinguishing apparatus for the battery box of the electric vehicle as claimed in claim 4, wherein: the two cylinder bodies are in butt joint along the length direction.
6. The fire extinguishing apparatus for the battery box of the electric vehicle as claimed in claim 1, wherein: the nozzle is a self-sealing nozzle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910816881.7A CN110465037B (en) | 2019-08-30 | 2019-08-30 | Fire extinguishing device for battery box of electric vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910816881.7A CN110465037B (en) | 2019-08-30 | 2019-08-30 | Fire extinguishing device for battery box of electric vehicle |
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| Publication Number | Publication Date |
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| CN110465037A CN110465037A (en) | 2019-11-19 |
| CN110465037B true CN110465037B (en) | 2021-07-27 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201910816881.7A Active CN110465037B (en) | 2019-08-30 | 2019-08-30 | Fire extinguishing device for battery box of electric vehicle |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114129945B (en) * | 2021-11-24 | 2022-07-22 | 北京达氟安全科技有限公司 | Fire extinguishing device convenient for repeatedly using and replacing fittings and application method thereof |
| CN115518321A (en) * | 2022-09-29 | 2022-12-27 | 安徽谊钢消防工程有限公司 | Pressure-storage-free handheld fire extinguishing device for high-rise building and using method thereof |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3889758A (en) * | 1971-04-05 | 1975-06-17 | Byron G Dunn | Hand operable fire extinguisher |
| SU631165A1 (en) * | 1976-04-19 | 1978-11-05 | Предприятие П/Я А-3646 | Fire extinguisher |
| CN101376048A (en) * | 2008-10-08 | 2009-03-04 | 吉林市国泰消防装备有限责任公司 | Single-soldier fire-fighting spraying apparatus |
| CN103212172B (en) * | 2012-11-13 | 2016-04-13 | 西安新竹防灾救生设备有限公司 | Electric automobile self-extinguishing firebreak device |
| CN105855089B (en) * | 2016-05-26 | 2018-03-23 | 余斌 | A kind of plunger pump liquid feed device |
| CN109754562A (en) * | 2018-12-11 | 2019-05-14 | 中冶(北京)交通科技发展有限公司 | A kind of municipal administration synthesis pipe gallery alarm system |
| CN109939388A (en) * | 2019-04-03 | 2019-06-28 | 应急管理部天津消防研究所 | A kind of automobile extinguishing device and implementation method |
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