CN210302117U - A intelligent extinguishing device for electric motor car lithium cell case - Google Patents

A intelligent extinguishing device for electric motor car lithium cell case Download PDF

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CN210302117U
CN210302117U CN201921044922.7U CN201921044922U CN210302117U CN 210302117 U CN210302117 U CN 210302117U CN 201921044922 U CN201921044922 U CN 201921044922U CN 210302117 U CN210302117 U CN 210302117U
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fire extinguishing
shell
temperature
extinguishing agent
fire
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张瑞龙
谢晓蔓
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Anhui Xinsicheng Technology Co ltd
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Anhui Xinsicheng Technology Co ltd
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Abstract

The utility model discloses an intelligent fire extinguishing device for an electric vehicle lithium battery box, which comprises a shell, wherein a clapboard is fixedly connected with the inner wall of the shell and divides the shell into an electric appliance bin and an adjusting bin, an innovative multi-chamber structural design is adopted, and a power source is stored without gas pressure and is safe and reliable; can effectively avoid aerosol type extinguishing device's defect, more adapt to the lithium cell box of electric motor car to collect the control unit as an organic whole, make up multiple fire detection mode, realize all-round monitoring and effective protection to fire hidden danger, can overcome the unable intelligent control's of portable dry powder fire extinguisher problem. The volume is small, the installation is convenient, and the lithium battery box can be placed in. The system integration level is high, a controller and a detector do not need to be additionally installed, and the installation space and the cost are reduced. The product integration degree is high, and the electric motor car of applicable different models is put out a fire. Reduce the cost, easy to assemble compares other products, the lithium cell box of adaptation electric motor car more.

Description

A intelligent extinguishing device for electric motor car lithium cell case
Technical Field
The utility model relates to a lithium cell safety equipment field, concretely relates to an intelligent extinguishing device for electric motor car lithium cell case.
Background
The intelligent fire extinguishing system who does not have needle on the existing market to the electric motor car temporarily, the current product of putting out a fire that is used for the lithium cell case mainly is portable fire extinguisher, aerosol extinguishing device and storage pressure formula structure extinguishing device such as carbon dioxide, heptafluoropropane, but above-mentioned extinguishing device has following shortcoming:
the portable fire extinguisher needs manual operation, can not put out a fire intelligently, can not monitor the battery state of the electric vehicle in real time, whether the temperature is abnormal or not and the like, thereby delaying the time for putting out a fire. Only after the electric vehicle is ignited, the fire can be extinguished by a manual fire extinguisher. Low efficiency, slow reaction, poor fire extinguishing effect and certain danger due to close-range operation of personnel.
The aerosol fire extinguishing device can only extinguish fire by a manual fire extinguisher after an electric vehicle is on fire. The efficiency is low, the reaction is slow, the fire extinguishing effect is poor, certain danger is caused by close-range operation of personnel, the temperature of a nozzle can reach more than 200 ℃ when the fire extinguishing device is started, and surrounding equipment can be ignited. After the eruption, a small amount of residual substances are left, which has an influence on equipment. The starting temperature of the system is 180 ℃, and a starting line is affected by moisture and the like.
The pressure storage type structures of carbon dioxide, heptafluoropropane and the like are used as fire extinguishing systems, and the driving gas is stored under pressure for a long time, so that leakage is easy to generate, and the phenomenon that the fire extinguishing efficiency is reduced or the fire extinguishing system cannot be sprayed due to insufficient driving pressure when the fire is in emergency use once a fire occurs. Therefore, such fire extinguishing devices must be periodically charged with air and pressurized. And too big, can't install inside the lithium cell box of electric motor car.
SUMMERY OF THE UTILITY MODEL
In order to solve the technical problem, the utility model aims to provide an intelligent extinguishing device for electric motor car lithium cell case adopts integration, miniaturized design, modularization equipment, both can singly overlap the use, but also the integrated use of multiunit, characteristics such as easy installation, non-maintaining, but the inside temperature of real-time supervision lithium cell, combustible gas concentration condition. The system has good smoke corrosion performance, can adjust parameters such as system starting temperature and the like according to needs, and can be in cooperation with a battery internal management system BMS. Especially, the system adopts the perfluorohexanone fire extinguishing agent, is clean, nontoxic and environment-friendly. The system has no influence on electronic equipment and an electric system after being started, has the characteristics of 110KV insulation and the like, and is suitable for scene fire protection of new energy batteries, new energy vehicles and the like.
The utility model discloses the technical problem who solves does:
A. the problem of current extinguishing device not design to electric motor car lithium cell case, unable intelligence is controlled, and fire extinguishing performance is poor, and current extinguishing device starting temperature is high, has to remain, has the harm to the components and parts of battery box inside is solved.
The purpose of the utility model can be realized by the following technical scheme:
an intelligent fire extinguishing device for a lithium battery box of an electric vehicle comprises a shell, wherein a partition plate is fixedly connected to the inner wall of the shell and divides the shell into an electric appliance bin and an adjusting bin, a waterproof joint, a combustible gas detector and a temperature-sensitive passive detector are fixedly inserted into the side wall of the shell, which is far away from the adjusting bin, and are positioned on two sides of the waterproof joint, a controller is fixedly connected to one side of the partition plate, which is close to the electric appliance bin, a plug is fixedly inserted into the center of the partition plate, a power device is fixedly connected to one side of the partition plate, which is close to the adjusting bin, the power device is fixedly installed in a sealing shell, the sealing shell is fixedly connected with the plug, the output end of the power device penetrates through the sealing shell and is fixedly connected with a piston, and two wire holes for communicating the electric appliance bin with, and the wire guide is located the both ends of baffle, the inside fixed sealing in surge bin is connected with two baffles of perpendicular to baffle, and the baffle is located power device's both sides, two the baffle constitutes a sealed fire extinguishing agent chamber at the middle part in surge bin, the both sides in fire extinguishing agent chamber constitute two fire extinguishing agent and reserve the chamber, and the inner wall sliding connection in piston and fire extinguishing agent chamber, the lateral wall through connection who keeps away from water joint in fire extinguishing agent chamber has the nozzle, and is provided with the temperature-detecting ware of fixed connection at the casing lateral wall in the both sides of nozzle.
Furthermore, a plurality of pairs of baffle slots are formed in the inner wall of the adjusting bin, and the baffles are fixedly, hermetically and inserted into the baffle slots.
Furthermore, a sealing film is arranged between the fire extinguishing agent cavity and the nozzle, and a perfluorohexanone fire extinguishing agent is stored in the fire extinguishing agent cavity.
Furthermore, the power device, the temperature detector and the combustible gas detector are connected with the controller through cables, and the temperature-sensing passive detector is connected with the power device.
Furthermore, the controller is connected with a battery management system and an audible and visual alarm through a signal line, and the audible and visual alarm is connected with the temperature-sensitive passive detector.
Further, the working method of the intelligent fire extinguishing device is as follows:
s1, sending an alarm signal to the controller after the combustible gas detector detects the carbon monoxide concentration abnormal signal; after the controller receives the alarm signal, calling an audible and visual alarm to send out an alarm to the outside;
s2, when the temperature detected by the temperature detector is higher than a preset value A, a fire signal is sent out, after the controller receives the fire signal, a V direct current signal is output, an external power supply supplies power to the power device, and the power device pushes the piston to discharge the fire extinguishing agent from the nozzle;
s3, when the external power supply is powered off or a fire disaster occurs under the working condition without the external power supply, and the temperature in the lithium battery box is higher than a preset value B of the temperature-sensitive passive detector, wherein B is larger than A, the temperature-sensitive passive detector sends pulse current to the power device to start the power device, and meanwhile, the temperature-sensitive passive detector calls an audible and visual alarm which gives an alarm.
The utility model has the advantages that:
(1) the utility model is different from the existing conventional fire extinguishing device, adopts the innovative multi-chamber structure design, and the power source has no gas pressure storage, thereby being safe and reliable; can effectively avoid aerosol type extinguishing device's defect, more adapt to the lithium cell box in electric motor car to collect the control unit as an organic whole, make up multiple condition of a fire detection mode (like thalposis, combustible gas etc.), realize all-round monitoring and effective protection to condition of a fire hidden danger, can overcome the unable intelligent control's of portable dry powder fire extinguisher problem.
(2) The volume is small, the installation is convenient, and the lithium battery box can be placed in. The system integration level is high, and the detection, the controller, the power device, the fire extinguishing agent and the nozzle are integrated on a small tank body. The controller and the detector do not need to be additionally installed, and the installation space and the cost are reduced. The product integration degree is high, and inside both sides have still reserved a large amount of expansion spaces, and the electric motor car of applicable different models is put out a fire. Reduce the cost, easy to assemble compares other products, the lithium cell box of adaptation electric motor car more.
Drawings
The present invention will be further described with reference to the accompanying drawings.
Fig. 1 is a schematic diagram of the internal structure of the present invention.
In the figure: the fire extinguishing device comprises a shell 1, a power device 2, a plug 3, a nozzle 4, a baffle 5, a controller 6, a temperature-sensitive passive detector 7, a baffle slot 8, a waterproof connector 9, a temperature detector 10, a fire extinguishing agent reserved cavity 11, a combustible gas detector 12, a wire hole 13, a sealing shell 14, a partition plate 15 and a piston 16.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by a person of ordinary skill in the art without creative efforts belong to the protection scope of the present invention.
Please refer to fig. 1, the embodiment provides an intelligent fire extinguishing apparatus for a lithium battery box of an electric vehicle, which includes a housing 1, a partition 15 is fixedly connected to an inner wall of the housing 1, the partition 15 divides the housing 1 into an electrical cabin and a regulation cabin, a waterproof connector 9, a combustible gas detector 12 and a temperature-sensitive passive detector 7 are fixedly inserted into a side wall of the housing 1 away from the regulation cabin, the combustible gas detector 12 is used for detecting a concentration of carbon monoxide, the combustible gas detector 12 and the temperature-sensitive passive detector 7 are located at two sides of the waterproof connector 9, the waterproof connector 9 is used for introducing a cable of an external power source to supply power to the controller 6, the controller 6 is fixedly connected to a side of the partition 15 close to the electrical cabin, a plug 3 is fixedly inserted into a center of the partition 15, a power device 2 is fixedly connected to a side of the partition 15 close to the regulation cabin, the power device, the sealing shell 14 is fixedly connected with the plug 3, the output end of the power device 2 penetrates through the sealing shell 14 and is fixedly connected with the piston 16, two wire holes 13 which are communicated with the electrical appliance bin and the adjusting bin are arranged on the clapboard 15, and the wire holes 13 are positioned at both ends of the clapboard 15, the signal wire of the temperature detector 10 is led into the controller 6 through the fire extinguishing agent reserving cavity 11 and the wire holes 13, the interior of the adjusting bin is fixedly and hermetically connected with two baffles 5 vertical to the clapboard 15, the baffles 5 are positioned at two sides of the power device 2, the two baffles 5 form a sealed fire extinguishing agent cavity in the middle of the adjusting bin, two fire extinguishing agent reserving cavities 11 are formed at two sides of the fire extinguishing agent cavity, and the piston 16 is connected with the inner wall of the fire extinguishing agent cavity in a sliding way, the side wall of the fire extinguishing agent cavity far away from the waterproof connector 9 is connected with the nozzle 4 in a through way, and temperature detectors 10 fixedly connected to the outer side wall of the housing 1 are provided at both sides of the nozzle 4.
The inner wall of the adjusting bin is provided with a plurality of pairs of baffle slots 8, and the baffles 5 are fixedly, hermetically and inserted in the baffle slots 8. Through inserting two baffles 5 in different baffle slot 8, can adjust the distance between two baffles 5, and then adjust the size in fire extinguishing agent chamber to the different use scene of adaptation. If the space of the middle fire extinguishing agent cavity is not enough, the fire extinguishing agent cavity can be conveniently expanded to two sides. Therefore, the main structure is not changed, and the expansion can be carried out on different vehicle types.
A sealing film is arranged between the fire extinguishing agent cavity and the nozzle 4, and the fire extinguishing agent cavity is stored with a perfluorohexanone fire extinguishing agent.
The power device 2, the temperature detector 10 and the combustible gas detector 12 are all connected with the controller 6 through cables, and the temperature-sensing passive detector 7 is connected with the power device 2.
When the ambient temperature exceeds a preset temperature limit, the thermosensitive element ring of the temperature-sensitive passive detector 7 deforms and releases the movable rod with the spring. Under the action of the spring, the magnet fixed to the moving rod passes through the induction coil, which consequently causes the coil to generate a pulse current of 2ms, which through the output activates the power unit 2. Meanwhile, the feedback signal end is converted from the normally open state to the normally closed state in the initial state
The controller 6 is also connected with a battery management system and an audible and visual alarm through a signal wire, and the audible and visual alarm is also connected with a temperature-sensitive passive detector 7. The controller 6 is also connected with a manual trigger button.
The working method of the intelligent fire extinguishing device is as follows:
s1, sending an alarm signal to the controller 6 after the combustible gas detector 12 detects the carbon monoxide concentration abnormal signal; after receiving the alarm signal, the controller 6 calls an audible and visual alarm to give an alarm to the outside;
s2, when the temperature detector 10 detects that the temperature is higher than the preset value a, a is 85 ℃, a fire signal is sent out, the controller 6 outputs a 24V dc signal after receiving the fire signal, the external power supply supplies power to the power device 2, and the power device 2 pushes the piston 16 to discharge the fire extinguishing agent from the nozzle 4;
s3, when the external power supply is powered off or a fire disaster occurs under the working condition without the external power supply, the temperature in the lithium battery box is higher than the preset value B of the temperature-sensitive passive detector 7, B is higher than A, B is 110 ℃, the temperature-sensitive passive detector 7 sends pulse current to the power device 2 to start the power device 2, and meanwhile, the temperature-sensitive passive detector 7 calls an audible and visual alarm which sends an alarm.
Wherein, the temperature detector 10 is DS18B 20; temperature-sensitive passive detector 7: EP-101; the power plant 2 is of the type GLS510, the controller 6 is of the type XSC-KZ-3 and the battery management system is ABMS-EV 03.
The specific working process of this embodiment is as follows:
1) one layer of protection: when a fire breaks out, firstly, the combustible gas detector 12 detects a carbon monoxide concentration abnormal signal and sends an alarm electric signal to the controller 6, and the controller 6 sends an alarm to the outside through the audible and visual alarm after receiving the alarm signal sent by the combustible gas detector 12; the staff can directly realize putting out a fire through setting up the manual trigger button start-up system in outside.
2) Two-layer protection: when the temperature detector 10 simultaneously detects a fire signal, the controller 6 outputs a 24V direct current signal power supply to start the power device 2, and the power device 2 conveys the fire extinguishing agent to a corresponding protection area through a fire extinguishing pipeline through the nozzle 4 to extinguish fire. Meanwhile, the controller 6 can also communicate with a battery management system BMS to acquire temperature data of the battery monitored by the BMS system so as to start the power device 2 to extinguish fire. The two temperature detection modes can simultaneously carry out detection work, so that the protection system is more reliable.
3) Three-layer protection: the temperature-sensing passive detector 7 is connected with the power device 2 through a cable, and simultaneously, a feedback signal is connected into the audible and visual alarm. When the external power supply is cut off or the working condition without the external power supply exists, the normal operation of the fire extinguishing system can be ensured through the temperature-sensing passive detector 7. When a fire disaster happens, when the temperature in the lithium battery box reaches the set temperature of the temperature-sensing passive detector 7, the temperature-sensing passive detector 7 can give a starting signal to the power device 2 to start the fire extinguishing system. Meanwhile, a feedback signal is sent to the audible and visual alarm, and the audible and visual alarm starts to give an alarm.
The foregoing is merely exemplary and illustrative of the structure of the invention, and various modifications, additions and substitutions as described in the detailed description may be made by those skilled in the art without departing from the structure or exceeding the scope of the invention as defined in the claims.

Claims (5)

1. An intelligent fire extinguishing device for a lithium battery box of an electric vehicle is characterized by comprising a shell (1), wherein a partition plate (15) is fixedly connected to the inner wall of the shell (1), the shell (1) is divided into an electrical appliance cabin and an adjusting cabin by the partition plate (15), a waterproof joint (9), a combustible gas detector (12) and a temperature-sensitive passive detector (7) are fixedly inserted into the side wall of the shell (1) far away from the adjusting cabin, the combustible gas detector (12) and the temperature-sensitive passive detector (7) are positioned on two sides of the waterproof joint (9), a controller (6) is fixedly connected to one side of the partition plate (15) close to the electrical appliance cabin, a plug (3) is fixedly inserted into the center of the partition plate (15), a power device (2) is fixedly connected to one side of the partition plate (15) close to the adjusting cabin, and the power device (2) is fixedly installed in a sealing shell (14, the sealing shell (14) is fixedly connected with the plug (3), the output end of the power device (2) penetrates through the sealing shell (14) and is fixedly connected with a piston (16), two wire holes (13) which are communicated with the electrical appliance bin and the adjusting bin are arranged on the partition plate (15), the wire holes (13) are positioned at two ends of the clapboard (15), the interior of the adjusting bin is fixedly and hermetically connected with two baffle plates (5) vertical to the clapboard (15), the baffles (5) are positioned at two sides of the power device (2), the two baffles (5) form a sealed fire extinguishing agent cavity in the middle of the adjusting bin, two fire extinguishing agent reserving cavities (11) are formed at two sides of the fire extinguishing agent cavity, and the piston (16) is connected with the inner wall of the fire extinguishing agent cavity in a sliding way, the side wall of the fire extinguishing agent cavity far away from the waterproof joint (9) is connected with a nozzle (4) in a through way, and temperature detectors (10) fixedly connected to the outer side wall of the shell (1) are arranged on two sides of the nozzle (4).
2. The intelligent fire extinguishing device for the lithium battery box of the electric vehicle as claimed in claim 1, wherein the inner wall of the adjusting bin is provided with a plurality of pairs of baffle slots (8), and the baffles (5) are fixedly, hermetically and inserted into the baffle slots (8).
3. The intelligent fire extinguishing device for the lithium battery box of the electric vehicle as claimed in claim 1, wherein a sealing film is arranged between the fire extinguishing agent cavity and the nozzle (4), and a perfluorohexanone fire extinguishing agent is stored in the fire extinguishing agent cavity.
4. The intelligent fire extinguishing device for the lithium battery box of the electric vehicle as claimed in claim 1, wherein the power device (2), the temperature detector (10) and the combustible gas detector (12) are all connected with the controller (6) through cables, and the temperature-sensitive passive detector (7) is connected with the power device (2).
5. The intelligent fire extinguishing device for the lithium battery box of the electric vehicle as claimed in claim 1, wherein the controller (6) is further connected with a battery management system and an audible and visual alarm through signal lines, and the audible and visual alarm is further connected with the temperature-sensitive passive detector (7).
CN201921044922.7U 2019-07-05 2019-07-05 A intelligent extinguishing device for electric motor car lithium cell case Active CN210302117U (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110227221A (en) * 2019-07-05 2019-09-13 安徽鑫思诚科技有限公司 A kind of intelligent extinguishing device for electric vehicle lithium battery case
CN113484715A (en) * 2021-09-08 2021-10-08 南通国为半导体科技有限公司 Semiconductor automatic test machine

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110227221A (en) * 2019-07-05 2019-09-13 安徽鑫思诚科技有限公司 A kind of intelligent extinguishing device for electric vehicle lithium battery case
CN110227221B (en) * 2019-07-05 2023-12-29 安徽鑫思诚科技有限公司 Intelligent fire extinguishing device for lithium battery box of electric vehicle
CN113484715A (en) * 2021-09-08 2021-10-08 南通国为半导体科技有限公司 Semiconductor automatic test machine
CN113484715B (en) * 2021-09-08 2021-11-05 南通国为半导体科技有限公司 Semiconductor automatic test machine

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