CN215608917U - Vehicle-mounted power battery box protection system, vehicle-mounted power supply system and electric vehicle - Google Patents
Vehicle-mounted power battery box protection system, vehicle-mounted power supply system and electric vehicle Download PDFInfo
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- CN215608917U CN215608917U CN202122199368.3U CN202122199368U CN215608917U CN 215608917 U CN215608917 U CN 215608917U CN 202122199368 U CN202122199368 U CN 202122199368U CN 215608917 U CN215608917 U CN 215608917U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
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- Y02E60/10—Energy storage using batteries
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Abstract
The utility model relates to a vehicle-mounted power battery box protection system, a vehicle-mounted power supply system and an electric vehicle, and belongs to the technical field of electric vehicles. The vehicle-mounted power battery box protection system comprises a fire extinguishing agent storage bottle for storing a low-boiling-point liquid fire extinguishing agent, wherein a fire extinguishing agent outlet is formed in the fire extinguishing agent storage bottle and is used for being connected with a battery box through a pipeline so as to introduce the low-boiling-point liquid fire extinguishing agent into the battery box, a fire extinguishing agent valve is arranged on the fire extinguishing agent outlet and is connected with a controller; the vehicle-mounted power battery box protection system further comprises a sensor and a controller connected with the sensor, wherein the controller is also connected with the fire extinguishing agent valve, so that when the sensor monitors abnormal signals, the controller controls the fire extinguishing agent valve to be opened to introduce the low-boiling-point liquid fire extinguishing agent into the battery box. The vehicle-mounted power battery box protection system can be used for repeated fire extinguishing, and can also be used for introducing a fire extinguishing agent into the battery box in real time to eliminate potential safety hazards.
Description
Technical Field
The utility model relates to a vehicle-mounted power battery box protection system, a vehicle-mounted power supply system and an electric vehicle, and belongs to the technical field of electric vehicles.
Background
In recent years, safety accidents such as new energy vehicles getting on fire frequently occur, and consumers pay more and more attention to the safety of new energy vehicles. At present, a new energy vehicle adopting a battery as a power supply is generally provided with a special safety device such as a fire extinguisher and the like so as to extinguish a fire or prevent the fire from spreading in time when the battery is in a fire, thereby reducing loss.
The fire extinguisher that present new forms of energy vehicle was equipped with generally is dry powder fire extinguisher to arrange in the outside of battery box, make things convenient for personnel to take. Because the fire extinguisher (tube-shape fire extinguishing bomb) can not be arranged in the battery box body, the fire extinguishing effect is poor, and only the low-voltage equipment and the wire harness fire outside the battery box body can be effectively solved.
In order to solve the problems, the fire extinguishing agent nozzle is arranged in a product in the battery box in the prior art, when fire breaks out in the battery box, the fire extinguishing agent is sprayed into the battery box by the fire extinguishing agent nozzle to extinguish the fire, but most of the devices connect the nozzle of the fire extinguisher to the battery box, most of the devices belong to disposable fire extinguishing devices, the fire extinguisher needs to be replaced after being used once, and the fire extinguishing device is very complicated and has high cost. Furthermore, the fire extinguishing apparatus described above cannot prevent or suppress a fire when a fire in the battery box occurs, because the temperature of the battery box is raised before the fire occurs, or the concentration of combustible gas is increased.
SUMMERY OF THE UTILITY MODEL
The utility model provides a vehicle-mounted power battery box protection system, a vehicle-mounted power supply system and an electric vehicle, which are convenient for fire extinguishing and fire prevention.
The technical scheme adopted by the utility model for solving the technical problems is as follows:
a vehicle-mounted power battery box protection system comprises a fire extinguishing agent storage bottle for storing a low-boiling-point liquid fire extinguishing agent, wherein a fire extinguishing agent outlet is formed in the fire extinguishing agent storage bottle and is used for being connected with a battery box through a pipeline so as to introduce the low-boiling-point liquid fire extinguishing agent into the battery box, a fire extinguishing agent valve is arranged on the fire extinguishing agent outlet and is connected with a controller; the vehicle-mounted power battery box protection system further comprises a sensor arranged in the battery box and a controller connected with the sensor, wherein the controller is also connected with the fire extinguishing agent valve, so that when the sensor monitors abnormal signals, the controller controls the fire extinguishing agent valve to be opened to introduce the low-boiling-point liquid fire extinguishing agent into the battery box.
The low boiling point liquid fire extinguishing agent is perfluorohexanone.
The vehicle-mounted power battery box protection system further comprises an alarm device, and the alarm device is connected with the controller to give an alarm when the sensor monitors abnormal signals.
The alarm device comprises alarm bells and alarm lamps, the number of the alarm lamps is consistent with that of the battery boxes, and the alarm lamps correspond to the battery boxes one to one and are controlled to be turned on by the controller when the sensors in the battery boxes detect abnormal signals.
The sensor comprises at least one of a smoke sensor, a CO sensor, a temperature sensor, a VOC sensor, an oxygen concentration sensor, a gas pressure sensor and a hydrogen concentration sensor.
The vehicle-mounted power battery box protection system further comprises a nitrogen making device, and a nitrogen outlet used for being connected with the battery box is formed in the nitrogen making device.
A vehicle-mounted power supply system comprises a plurality of battery boxes and a vehicle-mounted power battery box protection system, wherein the vehicle-mounted power battery box protection system comprises a fire extinguishing agent storage bottle for storing a low-boiling-point liquid fire extinguishing agent, a fire extinguishing agent outlet is formed in the fire extinguishing agent storage bottle and is used for being connected with the battery boxes through a pipeline so as to introduce the low-boiling-point liquid fire extinguishing agent into the battery boxes, a fire extinguishing agent valve is arranged on the fire extinguishing agent outlet, and the fire extinguishing agent valve is connected with a controller; the vehicle-mounted power battery box protection system further comprises a sensor arranged in the battery box and a controller connected with the sensor, wherein the controller is also connected with the fire extinguishing agent valve, so that when the sensor monitors abnormal signals, the controller controls the fire extinguishing agent valve to be opened to introduce the low-boiling-point liquid fire extinguishing agent into the battery box.
The vehicle-mounted power battery box protection system further comprises a locking mechanism arranged on the battery box and used for locking the battery box, the battery box comprises a box body and a box cover, the locking mechanism comprises a first lock body and a second lock body which are respectively arranged on the box body and the box cover, a lock tongue is arranged on one of the first lock body and the second lock body, a lock groove matched with the lock tongue is formed in the other one of the first lock body and the second lock body, an electric control driving mechanism is connected onto the lock tongue and used for driving the lock tongue to be matched with the lock groove so as to lock the battery box, and the electric control driving mechanism is connected with the controller.
An electric vehicle comprises a power supply system, wherein the power supply system comprises a plurality of battery boxes and a vehicle-mounted power battery box protection system, the vehicle-mounted power battery box protection system comprises a fire extinguishing agent storage bottle for storing a low-boiling-point liquid fire extinguishing agent, a fire extinguishing agent outlet is formed in the fire extinguishing agent storage bottle and is used for being connected with the battery boxes through a pipeline so as to introduce the low-boiling-point liquid fire extinguishing agent into the battery boxes, a fire extinguishing agent valve is arranged on the fire extinguishing agent outlet, and the fire extinguishing agent valve is connected with a controller; the vehicle-mounted power battery box protection system further comprises a sensor arranged in the battery box and a controller connected with the sensor, wherein the controller is also connected with the fire extinguishing agent valve, so that when the sensor monitors abnormal signals, the controller controls the fire extinguishing agent valve to be opened to introduce the low-boiling-point liquid fire extinguishing agent into the battery box.
Has the advantages that:
according to the vehicle-mounted power battery box protection system, the sensor is arranged in the battery box, when the abnormality in the battery box is monitored, the controller controls the fire extinguishing agent valve, the low-boiling-point liquid fire extinguishing agent is introduced into the battery box, and the low-boiling-point liquid fire extinguishing agent is quickly vaporized to form inert fire extinguishing gas to fill the battery box when entering the battery box, so that the quick fire extinguishing is realized. After the abnormal condition in the battery box is eliminated, the controller closes the fire extinguishing agent valve, and the fire extinguishing agent valve can be repeatedly used for many times when the next abnormal condition occurs.
Further, external tube-shape fire extinguishing bomb and internal spout formula concentrate extinguishing device, the prerequisite of fire extinguishing agent injection is the action of putting out a fire passively that just goes on after the condition of a fire appears in the power battery box, can not prevent in advance and restrain the power battery incasement hidden danger of firing, belongs to passive safety, and in case the condition of a fire appears in the electronic box, the damage to electronic components and parts and traditional parts is irreversible, needs to change again and detect electronic components. The device can also fill a low-boiling point fire extinguishing agent into the battery box in time to vaporize the fire extinguishing agent to generate inert gas to fill the battery box when abnormal conditions such as temperature rise, combustible gas (organic matter) concentration rise, smoke and the like occur in the battery box, so that fire disasters are inhibited.
Further, utilize current interior high-pressure gas source of auxiliary gas cylinder, realize the nitrogen-oxygen separation as the power supply of nitrogen making device, separate out high-purity nitrogen gas, and store in special nitrogen storage bottle, nitrogen storage bottle is connected through solenoid valve and power battery box, receive the different signals of sensor according to the controller, give solenoid valve on-off signal, the solenoid valve switching makes nitrogen gas get into the power battery box, and keep nitrogen pressure and the concentration in the power electromagnetic box, restrain module and high-voltage components in the power battery box and catch fire. When a sensor in the electric box detects a specific abnormal condition in the electric box, an outlet electromagnetic valve of the stored perfluorohexanone fire extinguishing agent bottle is started, perfluorohexanone is rapidly charged into the electric box, the perfluorohexanone in the electric box is rapidly vaporized to reduce the temperature in the electric box to be below a combustible ignition point, and meanwhile, the main controller communicates with a whole vehicle controller to cut off the high voltage of the whole vehicle and ensure the safety of batteries and equipment. The equipment main controller communicates with the cabin door or cover plate locking mechanism and the acousto-optic alarm device in the cabin body at the same time, the cabin door or cover plate locking mechanism is opened, and meanwhile, the alarm and the flashing light are given out, so that rescue workers can conveniently identify the position of the thermal runaway battery and can rescue quickly.
The power battery is generally installed in the confined cabin body to be furnished with the apron or the side hatch door of overhauing, in case take place battery thermal runaway, need open apron or hatch door, carry out further cooling and separate the oxygen processing, because open the time more than or equal to conventional opening time that apron and hatch door need under emergency, prolong emergency fire extinguishing time by a wide margin, bring bigger damage to battery and equipment.
Drawings
Fig. 1 is a schematic structural diagram of a vehicle-mounted power battery box protection system of the utility model.
Detailed Description
The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.
As shown in fig. 1, the vehicle-mounted power battery box protection system of the embodiment is used for providing protection for a power battery box of an electric motor coach.
The vehicle-mounted power battery box protection system comprises a nitrogen production device 19, and the nitrogen production device is an air membrane separation device. The membrane separation device is provided with a plurality of air inlets and a plurality of nitrogen outlets, wherein part of the nitrogen outlets are directly connected with the air inlets on the battery box and are used for charging nitrogen into the battery box 9. The pipeline that links to each other with the battery box air inlet includes trunk line and a plurality of branch pipelines that link to each other with the trunk line, and each branch pipeline links to each other with a battery box, still is provided with the solenoid valve on the branch pipeline, and the solenoid valve includes first solenoid valve 17 and second solenoid valve 18, and of course according to the quantity of battery box, the quantity of solenoid valve can also set up to more quantity.
An air inlet of the air membrane separation device is connected with an auxiliary gas cylinder 1 of the whole vehicle through a pipeline, and a main electromagnetic valve 2 and a dryer 3 are also connected in series on the pipeline. And a nitrogen outlet of the air membrane separation device is connected with the nitrogen storage bottle 5 through a pipeline for storing nitrogen, and an air outlet on the nitrogen storage bottle 5 is connected with an air inlet of the battery box 9. The pipe connecting the nitrogen storage bottle 5 and the battery box is also provided with a one-way valve 6 for controlling the rate of ventilation into the battery box. The nitrogen storage bottle is also provided with a constant temperature device 7 for ensuring the constant temperature of the nitrogen storage bottle.
The vehicle-mounted power battery box protection system further comprises a fire extinguishing agent storage tank 20, and the fire extinguishing agent perfluorohexanone is stored in the fire extinguishing agent storage tank 20. The outlet of the fire extinguishing agent storage tank 20 is connected to each battery box through a fire extinguishing agent pipe, and a valve is provided on the fire extinguishing agent pipe leading to each battery box. The fire extinguishing agent storage tank is also externally provided with a fire extinguishing agent thermostatic device 21.
The vehicle-mounted power battery box protection system further comprises a main controller 8, and the main controller 8 is connected with the main electromagnetic valve 2 and the first electromagnetic valve 17 and the second electromagnetic valve 18 on the battery box.
The nitrogen storage bottle 5 is also provided with a nitrogen storage pressure sensor 4 for monitoring the gas pressure in the nitrogen storage bottle, and the nitrogen storage pressure sensor is connected with the main controller. Each battery box is internally provided with a hydrogen concentration sensor 10, a smoke concentration sensor 11, a VOC sensor 12, a CO sensor 13, a temperature sensor 14, an oxygen concentration sensor 15 and a pressure sensor 16 which are all connected with a main controller.
When the sensors monitor that the corresponding battery boxes are abnormal, the main controller controls the perfluorohexanone to be charged into the battery boxes, so that the temperature in the battery boxes is rapidly reduced to be below the ignition point of combustible substances. Meanwhile, the main controller communicates with the whole vehicle controller to cut off the high voltage of the whole vehicle and ensure the safety.
The vehicle-mounted power battery box protection system further comprises an alarm system 26 for alarming when the battery box is abnormal, the alarm system comprises an alarm bell and alarm lamps, only one alarm bell is arranged, but each battery box corresponds to one alarm lamp. Alarm bell and alarm lamp all link to each other with main control unit, and when main control unit monitored that the sensor in the battery box appears unusually, control alarm bell ring and control the alarm lamp scintillation that corresponds with this battery box (the sensor that sets up in each battery box, it corresponds, inputs serial number information in the controller in advance), make things convenient for rescue personnel or maintenance personal to discern the position of thermal runaway battery to expand rescue or maintenance.
The vehicle-mounted power battery box protection system further comprises a locking mechanism, and the locking mechanism is arranged on the battery box and used for locking the battery box. Specifically, the battery box includes box and case lid that mutually supports, and locking mechanism is provided with the spring bolt including setting up the first lock body on the box and setting up the second lock body on the case lid on the first lock body, be provided with on the second lock body with spring bolt complex locked groove, be connected with automatically controlled actuating mechanism on the spring bolt and be used for driving spring bolt and locked groove cooperation in order to lock the battery box, automatically controlled actuating mechanism links to each other with the controller.
The main controller is connected with an equipment controller 23, and the equipment controller is connected with a high-voltage circuit 24 of the whole vehicle equipment. The battery box is provided with a locking mechanism 25, and the locking mechanism is used for locking the cover plate. And the equipment controller or the main controller is connected with a switch of the locking mechanism so as to open the locking mechanism when the battery box is abnormal.
Claims (9)
1. A vehicle-mounted power battery box protection system is characterized by comprising a fire extinguishing agent storage bottle for storing a low-boiling-point liquid fire extinguishing agent, wherein a fire extinguishing agent outlet is formed in the fire extinguishing agent storage bottle and is used for being connected with a battery box through a pipeline so as to introduce the low-boiling-point liquid fire extinguishing agent into the battery box, and a fire extinguishing agent valve is arranged on the fire extinguishing agent outlet and is connected with a controller;
the vehicle-mounted power battery box protection system further comprises a sensor arranged in the battery box and a controller connected with the sensor, wherein the controller is also connected with the fire extinguishing agent valve, so that when the sensor monitors abnormal signals, the controller controls the fire extinguishing agent valve to be opened to introduce the low-boiling-point liquid fire extinguishing agent into the battery box.
2. The vehicle-mounted power battery box protection system according to claim 1, wherein the low-boiling-point liquid fire extinguishing agent is perfluorohexanone.
3. The vehicle-mounted power battery box protection system according to claim 1, further comprising an alarm device connected to the controller to alarm when the sensor detects an abnormal signal.
4. The vehicle-mounted power battery box protection system according to claim 3, wherein the alarm device comprises alarm bells and alarm lamps, the number of the alarm lamps is consistent with that of the battery boxes, the alarm lamps correspond to the battery boxes in a one-to-one mode, and the controller controls the corresponding alarm lamps to light up when the sensors in the battery boxes detect abnormal signals.
5. The on-board power battery box protection system of claim 1, wherein the sensor comprises at least one of a smoke sensor, a CO sensor, a temperature sensor, a VOC sensor, an oxygen concentration sensor, a gas pressure sensor, a hydrogen concentration sensor.
6. The vehicle-mounted power battery box protection system according to claim 1, further comprising a nitrogen generation device, wherein the nitrogen generation device is provided with a nitrogen outlet for connecting with the battery box.
7. A vehicle-mounted power supply system is characterized by comprising a plurality of battery boxes and a vehicle-mounted power battery box protection system, wherein the vehicle-mounted power battery box protection system comprises a fire extinguishing agent storage bottle for storing a low-boiling-point liquid fire extinguishing agent, a fire extinguishing agent outlet is formed in the fire extinguishing agent storage bottle and is used for being connected with the battery boxes through a pipeline so as to introduce the low-boiling-point liquid fire extinguishing agent into the battery boxes, a fire extinguishing agent valve is arranged on the fire extinguishing agent outlet, and the fire extinguishing agent valve is connected with a controller; the vehicle-mounted power battery box protection system further comprises a sensor arranged in the battery box and a controller connected with the sensor, wherein the controller is also connected with the fire extinguishing agent valve, so that when the sensor monitors abnormal signals, the controller controls the fire extinguishing agent valve to be opened to introduce the low-boiling-point liquid fire extinguishing agent into the battery box.
8. The vehicle-mounted power supply system according to claim 7, wherein the vehicle-mounted power battery box protection system further comprises a locking mechanism arranged on the battery box and used for locking the battery box, the battery box comprises a box body and a box cover, the locking mechanism comprises a first lock body and a second lock body respectively arranged on the box body and the box cover, one of the first lock body and the second lock body is provided with a lock tongue, the other lock body is provided with a lock groove matched with the lock tongue, the lock tongue is connected with an electric control driving mechanism which is used for driving the lock tongue to be matched with the lock groove so as to lock the battery box, and the electric control driving mechanism is connected with the controller.
9. An electric vehicle is characterized by comprising a power supply system, wherein the power supply system comprises a plurality of battery boxes and a vehicle-mounted power battery box protection system, the vehicle-mounted power battery box protection system comprises a fire extinguishing agent storage bottle for storing a low-boiling-point liquid fire extinguishing agent, a fire extinguishing agent outlet is formed in the fire extinguishing agent storage bottle and is used for being connected with the battery boxes through a pipeline so as to introduce the low-boiling-point liquid fire extinguishing agent into the battery boxes, a fire extinguishing agent valve is arranged on the fire extinguishing agent outlet, and the fire extinguishing agent valve is connected with a controller; the vehicle-mounted power battery box protection system further comprises a sensor arranged in the battery box and a controller connected with the sensor, wherein the controller is also connected with the fire extinguishing agent valve, so that when the sensor monitors abnormal signals, the controller controls the fire extinguishing agent valve to be opened to introduce the low-boiling-point liquid fire extinguishing agent into the battery box.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122199368.3U CN215608917U (en) | 2021-09-10 | 2021-09-10 | Vehicle-mounted power battery box protection system, vehicle-mounted power supply system and electric vehicle |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202122199368.3U CN215608917U (en) | 2021-09-10 | 2021-09-10 | Vehicle-mounted power battery box protection system, vehicle-mounted power supply system and electric vehicle |
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| CN202122199368.3U Active CN215608917U (en) | 2021-09-10 | 2021-09-10 | Vehicle-mounted power battery box protection system, vehicle-mounted power supply system and electric vehicle |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114470560A (en) * | 2022-01-27 | 2022-05-13 | 江苏智安行能源科技有限公司 | Public transport means fire emergency safety protection system |
| CN114699674A (en) * | 2022-05-10 | 2022-07-05 | 浙江吉利控股集团有限公司 | Safety protection method, system, equipment and storage medium |
| WO2023197276A1 (en) * | 2022-04-15 | 2023-10-19 | 宁德时代新能源科技股份有限公司 | Gas processing system as well as control method thereof, and electric apparatus |
-
2021
- 2021-09-10 CN CN202122199368.3U patent/CN215608917U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114470560A (en) * | 2022-01-27 | 2022-05-13 | 江苏智安行能源科技有限公司 | Public transport means fire emergency safety protection system |
| WO2023197276A1 (en) * | 2022-04-15 | 2023-10-19 | 宁德时代新能源科技股份有限公司 | Gas processing system as well as control method thereof, and electric apparatus |
| CN114699674A (en) * | 2022-05-10 | 2022-07-05 | 浙江吉利控股集团有限公司 | Safety protection method, system, equipment and storage medium |
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