New energy automobile battery puncture fire extinguishing device

Abstract

The invention discloses a new energy automobile battery puncture fire extinguishing device which comprises a supporting frame, a push rod and a compressed fire extinguishing agent storage tank, and one side of the supporting frame is hinged to or fixedly connected with the push rod; an explosive puncture assembly is installed on the supporting frame, a flow channel communicated with the tip end of a nail penetrating head and a conveying pipe is arranged in the nail penetrating head, and an inlet of the conveying pipe is connected with a compressed fire extinguishing agent storage tank. The device has the advantages that the device is simple and light in structure, explosive armor penetrating is adopted, a fire extinguishing agent can be directly injected into a battery pack for extinguishing fire, clumsy armor penetrating design such as a drilling machine is avoided, stability is high, and the device is more reliable; the explosion-proof device is simple in structure and convenient to use, the explosion-proof device only needs to maintain normal operation before explosion (the explosion-proof device can be pressurized and exploded after extending into the bottom of the battery, and flame cannot influence the explosion in several seconds), pressure linkage is utilized, manual operation of an external control line is not needed, and the stability is greatly improved.

Description

Technical Field

[0001] The invention relates to a fire extinguishing device, and in particular to a battery puncture fire extinguishing device for a new energy vehicle. Background Art

[0002] With the popularization of new energy electric vehicles, the number of battery fires will gradually increase, especially in charging stations and other locations, where the probability of fire during charging is relatively high.

[0003] Unlike fuel vehicles, the battery is installed at the bottom of the vehicle. In order to protect the battery pack, the battery pack has a layer of protective armor. Once a fire occurs, firstly, the bottom space is small, and conventional fire extinguishers are difficult to play an effective role. Secondly, because the battery cells are inside the battery pack, there is protective armor and even chassis armor on the outside, making it difficult to directly extinguish the fire of the battery cells. As a result, the fire cannot be extinguished quickly in a short period of time, causing the fire to spread. Summary of the invention

[0004] The technical problem to be solved by the present invention is to provide a new energy vehicle battery puncture fire extinguishing device to solve the technical problems in the above-mentioned background technology.

[0005] The technical solution of the present invention is:

[0006] A new energy vehicle battery puncture fire extinguishing device comprises a support frame, a push rod and a compressed fire extinguishing agent storage tank, wherein one side of the support frame is hinged or fixedly connected to the push rod; an explosive puncture assembly is installed on the support frame, and a flow channel connecting the tip and a delivery pipe is arranged inside the piercing head, and the inlet of the delivery pipe is connected to the compressed fire extinguishing agent storage tank.

[0007] Furthermore, the medium of the compressed fire extinguishing agent storage tank is perfluoroacetone or aerogel.

[0008] Furthermore, the explosive piercing assembly includes a launching tube with a threading hole at the bottom end, the launching tube is installed in the middle of the supporting frame, and supporting ribs are evenly arranged on the surrounding wall; the armor-piercing head is inserted into the launching tube, and the sliding grooves are symmetrically arranged on the surrounding wall at the upper part of the launching head, and the corresponding positions of the armor-piercing head are all provided with sliding blocks.

[0009] Furthermore, the launching tube is filled with electronic fuze gunpowder, and its wire is connected to the detonating device after passing through the threading hole.

[0010] Furthermore, the detonating device includes a power supply and a pressure switch, wherein the power supply has a power switch; the wires of the electronic fuze gunpowder are connected to the two poles of the power supply, and a pressure switch is connected in series on the positive pole; and the pressure switch collects pressure from the delivery pipe through a pressure collector.

[0011] Furthermore, the power supply is located inside the protective cover, and the protective cover and the pressure switch are both installed on the bottom side of the support frame. Terminals are provided at the bottom of the protective cover for connecting the wires. Support slides are installed at the four corners of the bottom of the support frame, and the pressure collector is fixed on the upper side of the support plate near the edge. The delivery pipe between the pressure collector and the explosive puncture assembly has the freedom to swing upward.

[0012] Furthermore, both left and right sides of the support slide have rounded corners.

[0013] Furthermore, the support frame is fixed to the connecting seat by the edge of one side of the pressure collector, and the push rod is composed of a horizontal section and a handle assembly obliquely connected to the end; the horizontal section is hollow, and the front end is fixed to the connecting seat by a flange, and the delivery pipe passes through the connecting seat into the horizontal section and comes out from the end of the horizontal section.

[0014] The present invention is beneficial in that:

[0015] The advantages of the present invention are that it has a simple and light structure and adopts explosive armor-piercing, which can avoid the use of clumsy armor-piercing designs such as drilling rigs. It has high stability and is more reliable. Although the explosives require a detonator, the detonator is very simple and is designed at the bottom. It only needs to maintain normal operation before detonation (it can be pressurized and detonated after extending into the bottom of the battery, and it will not be affected even if there is a flame in a few seconds). In addition, it uses pressure linkage and does not require external control lines for manual operation, which greatly improves stability. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention;

[0017] Figure 2 A three-dimensional diagram of the combination of the support frame and the explosive puncture component Figure 1 ;

[0018] Figure 3 A three-dimensional diagram of the combination of the support frame and the explosive puncture component Figure 2 ;

[0019] Figure 4 It is a cross-sectional view of the combination of the support frame and the explosive puncture component.

[0020] In the figure: 1-support frame, 11-support slide, 12-connecting seat, 2-explosive piercing assembly, 21-launching tube, 211-threading hole, 212-slide groove, 213-support rib, 214-electronic fuse gunpowder, 22-armor piercing head, 221-slider, 222-flow channel, 23-delivery pipe, 24-protective cover, 241-power switch, 242-terminal, 25-pressure switch, 26-pressure collector, 3-push rod, 31-horizontal section, 32-handle assembly, 33-flange, 4-compressed fire extinguishing agent storage tank. DETAILED DESCRIPTION

[0021] The specific embodiments of the present invention are further described below in conjunction with the accompanying drawings. It should be noted that the description of these embodiments is used to help understand the present invention, but does not constitute a limitation of the present invention. In addition, the technical features involved in the various embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0022] like Figure 1-4 As shown:

[0023] A new energy vehicle battery puncture fire extinguishing device includes a support frame 1, a push rod 3 and a compressed fire extinguishing agent storage tank 4. One side of the support frame 1 is hinged or fixedly connected to the push rod 3; an explosive puncture assembly 2 is installed on the support frame 1, and a flow channel 222 connecting its tip and a delivery pipe 23 is arranged inside the piercing head 22, and the inlet of the delivery pipe 23 is connected to the compressed fire extinguishing agent storage tank 4.

[0024] When a fire occurs in a new energy vehicle, the support frame 1 is pushed into the battery position at the bottom of the vehicle by the push rod 3, and then the explosive puncture assembly 2 is started. The piercing head 22 quickly penetrates the guard plate at the bottom of the vehicle and the outer shell of the battery, and the fire extinguishing agent is injected into the interior of the battery pack to achieve rapid fire extinguishing. The fire extinguishing medium can be perfluoroacetone or aerogel, both of which are good fire extinguishing agents for electrical fire extinguishing. The delivery pipe 23 needs to adopt a high-temperature resistant, high-strength steel belt wrapped pipe with high flexibility.

[0025] The explosive piercing assembly 2 is a device for ejecting an armor-piercing head 22 at high speed, and includes a launch tube 21 with a threading hole 211 at the bottom end. The launch tube 21 is installed in the middle of the support frame 1, and supporting ribs 213 are evenly arranged on the surrounding wall to increase the strength; the armor-piercing head 22 is inserted into the launch tube 21, and a slide groove 212 is symmetrically arranged on the surrounding wall at the upper part of the launch head. Slide blocks 221 are arranged at the corresponding positions of the armor-piercing head 22. The slide blocks 221 can ensure that the armor-piercing head 22 does not rotate and penetrates smoothly upward to avoid twisting off the conveying tube 23. In order to simplify the structure, the launch tube 21 is filled with electronic fuse gunpowder 214, and its wire is connected to the detonating device after passing through the threading hole 211, and electronic detonation is adopted.

[0026] In order to protect the detonating device and ensure its effective operation, the detonating device includes a power supply and a pressure switch 25. The power supply has a power switch 241 for insurance, which is turned on before use; the wires of the electronic fuse gunpowder 214 are connected to the two poles of the power supply, and the pressure switch 25 is connected in series on the positive pole. The pressure switch 25 collects pressure from the delivery pipe 23 through the pressure collector 26 (equivalent to a tee with a very small bypass flow diameter). When the valve of the compressed fire extinguishing agent storage tank 4 is opened, the pressure in the delivery pipe 23 increases, and the pressure is transmitted to the pressure switch 25. The pressure switch 25 closes the connecting circuit for detonation. In this way, there is no need for manual detonation by an external switch, and pressure linkage detonation is used.

[0027] A power source (two 1.5V batteries connected in parallel) can also be placed in the protective cover 24. The protective cover 24 and the pressure switch 25 are both installed on the bottom side of the support frame 1. A terminal 242 is provided at the bottom of the protective cover 24 for connecting the wires. Support slides 11 are installed at the four corners of the bottom of the support frame 1. The pressure collector 26 is fixed on the upper side of the support plate near the edge. The conveying pipe 23 between the pressure collector 26 and the explosive puncture assembly 2 has the freedom to swing upward. In this way, the electrical parts are all located on the bottom side, and can persist until detonation when the fire at the bottom is large (the battery and the pressure switch 25 are replaced after each use).

[0028] In order to ensure stability during explosive armor-piercing, the present invention adopts a wheelless design, so a support slide 11 is added to facilitate pushing and leave space at the bottom for installing a pressure switch 25 and a power supply. Rounded corners can be processed on the left and right sides of the support slide 11, so that it is smoother when pushed. The support frame and the detonating device in the present invention are not heavy, and the wheelless design does not affect their pushing.

[0029] Taking into account the overall disassembly and assembly and compactness, the support frame 1 is fixed to the connecting seat 12 by the edge of one side of the pressure collector 26, and the push rod 3 is composed of a horizontal section 31 and a handle assembly 32 obliquely connected to the end; the horizontal section 31 is hollow, and the front end is fixed to the connecting seat 12 by a flange 33. The delivery pipe 23 passes through the connecting seat 12 and enters the horizontal section 31, and passes out from the end of the horizontal section 31.

[0030] The above embodiments use electronic fuze gunpowder and electrically excite the explosive piercing component; a firing pin mechanical excitation method can also be used, which is similar to the structure of a nail gun, and uses a firing pin mechanism to excite the primer of the propellant. The overall structure is consistent with the existing firing pin excitation device, but the trigger part is still triggered in a linkage manner, using a piston to collect the air pressure or hydraulic pressure of the delivery pipe. After the pressure rises, the piston is pushed out to trigger the trigger to release the action.

[0031] The embodiments of the present invention are described in detail above with reference to the accompanying drawings, but the present invention is not limited to the described embodiments. For those skilled in the art, various changes, modifications, substitutions and variations of these embodiments are made without departing from the principles and spirit of the present invention, and still fall within the scope of protection of the present invention.

Claims

1. A new energy vehicle battery puncture fire extinguishing device, characterized in that: It includes a support frame, a push rod and a compressed fire extinguishing agent storage tank, one side of the support frame is hinged or fixedly connected to the push rod; an explosive piercing assembly is installed on the support frame, and a flow channel connecting its tip and a delivery pipe is arranged inside the piercing head, and the inlet of the delivery pipe is connected to the compressed fire extinguishing agent storage tank.

2. The new energy vehicle battery puncture fire extinguishing device according to claim 1 is characterized in that: The medium of the compressed fire extinguishing agent storage tank is perfluoroacetone or aerogel.

3. The new energy vehicle battery puncture fire extinguishing device according to claim 1 is characterized in that: The explosive piercing assembly includes a launch tube with a threading hole at the bottom end, the launch tube is installed in the middle of the support frame, and supporting ribs are evenly arranged on the surrounding wall; the armor-piercing head is inserted into the launch tube, and sliding grooves are symmetrically arranged on the surrounding wall at the upper part of the launch head, and sliding blocks are arranged at the corresponding positions of the armor-piercing head.

4. The new energy vehicle battery puncture fire extinguishing device according to claim 3 is characterized in that: The launching tube is filled with electronic fuze gunpowder, and its wire is connected with the detonating device after passing through the threading hole.

5. The new energy vehicle battery puncture fire extinguishing device according to claim 4 is characterized in that: The detonating device comprises a power supply and a pressure switch, wherein the power supply has a power switch; the wire of the electronic fuze gunpowder is connected to the two poles of the power supply, and a pressure switch is connected in series on the positive pole; the pressure switch collects pressure from the delivery pipe through a pressure collector.

6. The new energy vehicle battery puncture fire extinguishing device according to claim 5 is characterized in that: The power supply is located in the protective cover, and the protective cover and the pressure switch are installed on the bottom side of the support frame. Terminals are arranged at the bottom of the protective cover for connecting the wires. Support slides are installed at the four corners of the bottom of the support frame. The pressure collector is fixed on the upper side of the support plate near the edge. The delivery pipe between the pressure collector and the explosive puncture assembly has the freedom to swing upward.

7. The new energy vehicle battery puncture fire extinguishing device according to claim 6 is characterized in that: The left and right sides of the support slide seat both have rounded corners.

8. The new energy vehicle battery puncture fire extinguishing device according to claim 6 is characterized in that: The support frame is fixed to the connecting seat by the edge of one side of the pressure collector, and the push rod is composed of a horizontal section and a handle assembly obliquely connected to the end; the horizontal section is hollow, and the front end is fixed to the connecting seat by a flange, and the delivery pipe passes through the connecting seat into the horizontal section and comes out from the end of the horizontal section.

Images