New energy automobile battery safe separation device

Abstract

The invention discloses a new energy automobile battery safe separation device which comprises a battery tray installed at the bottom of an automobile body, a power battery is installed in the battery tray, the battery tray is connected to the bottom of the automobile body through an explosive bolt, an explosive is arranged in the explosive bolt, and the battery tray is separated from the automobile body when the explosive explodes; a translation driving device is also arranged on the battery tray and is used for driving the battery tray and the power battery fixed on the battery tray to translate after the battery tray is separated from the vehicle body. The battery tray is mounted at the bottom of the vehicle body through the explosive bolt, and when the danger detection unit monitors that the battery is in a dangerous state, the explosive bolt is broken after explosion, so that the battery tray and the battery are separated from the vehicle body from the bottom of the vehicle body; and the battery tray and the power battery are driven by the translation driving device to translate to the safety area, so that vehicle damage and personnel injury during battery detonation are avoided.

Description

Technical Field

[0001] The present invention relates to the technical field of new energy vehicles, and in particular to a battery safety disconnection device for a new energy vehicle. Background Art

[0002] New energy vehicles (NEVs) use unconventional automotive fuels as their power source (or use conventional automotive fuels with new onboard power units), integrating advanced technologies in vehicle power control and drive to create vehicles with advanced technical principles, new technologies, and new structures. New energy electric vehicles are a common type. In pure electric vehicles equipped solely with batteries, the battery serves as the sole power source for the vehicle's propulsion system. The safe use of new energy vehicle batteries is directly related to the safety of life and property of drivers and passengers, as well as public safety. Lithium-ion batteries can experience thermal runaway due to overcharging, short circuiting, or mechanical damage, leading to smoke, fire, and even explosion.

[0003] In order to improve the safety of battery use in electric vehicles, it is necessary to disconnect the battery from the electric vehicle when a safety hazard occurs in the battery. For example, Chinese Patent Publication No. CN102310829A in the prior art discloses an emergency safety disconnection device for an electric vehicle power battery, which includes: a battery box with a side door is provided in the vehicle body for accommodating the power battery; the emergency safety disconnection device includes an electronic control unit and a signal acquisition mechanism electrically connected to the electronic control unit, a battery electronic disconnection mechanism, and an electronic door opening mechanism; the battery box is provided with a door opening sensing mechanism for sensing the opening and closing of the side door and a latch mechanism for positioning the power battery in the battery box, the door opening sensing mechanism controls the retraction and extension of the latch mechanism; the electronic control unit analyzes the signal fed back by the signal acquisition mechanism, and when the signal is abnormal, the electronic control unit controls the electronic door opening mechanism to open the battery box side door. The door opening sensing mechanism controls the retraction of the latch mechanism after the battery box side door is opened, and the electronic control unit controls the battery electronic disconnection mechanism to push the power battery out of the vehicle body through the side door. In this disclosed device, a battery box with a side door is provided and a power battery is placed in the battery box. When an unsafe indicator signal is collected, the side door of the battery box is opened and the power battery is pushed out of the vehicle body through the side door. However, in this type of device, after the power battery is pushed out of the vehicle body, it will burn and explode on the side of the vehicle, which will pose a greater safety hazard to the vehicle side. If there is a large flow of people on the side of the vehicle, it may cause an even greater safety accident. In addition, the power battery is driven to move toward the side of the vehicle body by the elastic force of a spring, and the spring reaction speed is slow, which does not meet the demand for rapid separation. Summary of the Invention

[0004] The purpose of the present invention is to solve the above technical problems and provide a new energy vehicle battery safety disconnection device.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions:

[0006] A new energy vehicle battery safety detachment device includes a battery tray installed at the bottom of the vehicle body, a power battery installed in the battery tray, and the battery tray is connected to the bottom of the vehicle body via explosive bolts. The explosive bolts are provided with explosives and detach the battery tray from the vehicle body when the explosives explode; the battery tray is also provided with a translation drive device, which is used to drive the battery tray and the power battery fixed on the battery tray to translate after the battery tray is detached from the vehicle body.

[0007] Furthermore, a threaded hole that cooperates with the explosive bolt is provided at the bottom of the vehicle body, and a recessed groove is provided at one end of the threaded hole close to the battery tray. The side of the battery tray is fixedly connected with a connecting flange, and the end of the recessed groove is fitted with the connecting flange. When the explosive bolt is connected to the vehicle body by threads, the area filled with explosives in the explosive bolt is located in the recessed groove.

[0008] Furthermore, the translation drive device includes an energy storage tank installed on the battery tray, and nozzles are arranged around the battery tray. The energy storage tank and the nozzle are connected through a jet pipe. When the battery tray is detached from the vehicle body, high-pressure gas is generated in the energy storage tank and ejected from the nozzle at high speed, causing the battery tray to translate away from the vehicle body.

[0009] Furthermore, a mounting cavity is provided on the battery tray, one side of the mounting cavity is an open structure, the nozzle is installed in the mounting cavity and the spray end of the nozzle is facing the open side of the mounting cavity; the upper and lower ends of the open side of the mounting cavity are hingedly connected with a sealing plate, a slide groove is provided in the mounting cavity, a sliding block is slidably fitted in the slide groove, a support rod is hingedly connected to the sliding block, and the support rod is hinged to the sealing plate at one end away from the sliding block, and the movement of the sliding block drives the sealing plate to tilt into the mounting cavity.

[0010] Furthermore, a connecting ring is provided in the installation cavity, and the connecting ring is fixedly connected to the sliding blocks at the upper and lower ends of the installation cavity; a driving motor corresponding to the nozzle is installed in the battery tray, and a first screw is fixedly connected to the output shaft of the driving motor, and a transmission nut is fixedly connected to the connecting ring, and the first screw passes through the transmission nut and cooperates with the transmission nut through a thread.

[0011] Furthermore, an extrusion block is fixedly connected to the outer wall of the transmission nut, and a control valve for controlling the on and off of the jet pipeline is fixedly connected to the jet pipeline. The control valve is provided with a contact for switching the on / off state of the control valve. When the transmission nut is away from the sealing plate, the extrusion block contacts the contact and squeezes the contact so that the control valve opens the jet pipeline.

[0012] Furthermore, a micro switch is fixedly connected inside the battery tray, and the micro switch is located on the side of the extrusion block away from the sealing plate, and the micro switch is switched when the transmission nut moves to touch the contact of the micro switch.

[0013] Furthermore, a plurality of nozzles are provided around the battery tray, and the energy storage tank is connected to the plurality of nozzles respectively through jet pipes.

[0014] Furthermore, the battery tray is provided with a control system, which includes a hazard detection unit, an environment recognition unit and an information processing unit. The hazard detection unit is used to detect hazard parameters to issue a fire risk signal. The environment recognition unit is used to identify the location and distance information of obstacles in the environment surrounding the battery tray. The hazard detection unit and the environment recognition unit are both communicatively connected to the information processing unit to send the detection information to the information processing unit. The information processing unit is electrically connected to the drive motor and the igniter in the energy storage tank.

[0015] A proximity sensor is fixedly connected to the bottom of the battery tray, and is used to detect the distance between the battery tray and the ground. The proximity sensor is communicatively connected to the information processing unit; the detonator in the explosive bolt is electrically connected to the information processing unit; and the micro switch is electrically connected to the information processing unit.

[0016] The information processing unit is used to receive detection information from the hazard detection unit and the environment recognition unit, and determine whether the battery tray is separated according to the set model based on the environmental parameter information detected by the hazard detection unit. When it is determined according to the model that the battery tray is separated, the information processing unit sends a detonation instruction to the detonator in the explosive bolt to detonate it.

[0017] After the explosive bolt is detonated, the information processing unit obtains the obstacle position and distance information around the battery tray sent by the environmental recognition unit, determines the most open safe area in the surrounding environment based on the model, determines the nozzle jet in the corresponding direction based on the position information of the safe area, and sends instructions to the drive motor matching the corresponding nozzle to drive the opening of the sealing plate and the control valve on the corresponding jet pipe, and determines whether the bottom of the battery tray is in contact with the ground based on the feedback information of the proximity sensor. When it is determined that the bottom of the battery tray is in contact with the ground, and the transmission nut triggers the microswitch to change the microswitch signal, an instruction is sent to the igniter in the energy storage tank to ignite and generate high-pressure gas, so that the high-pressure gas is delivered to the corresponding nozzle and quickly ejected to drive the battery tray to move to the target safe area.

[0018] Furthermore, the danger detection unit includes a smoke sensor, a temperature sensor, and a pressure sensor, which detects different environmental parameters through the smoke sensor, the temperature sensor, and the pressure sensor and sends the environmental parameter information to the information processing unit;

[0019] The environment recognition unit includes a laser radar and an ultrasonic radar installed around the battery tray, which measures the position and distance of surrounding obstacles through the laser radar and ultrasonic radar and sends the obstacle information to the information processing unit.

[0020] The present invention provides a new energy vehicle battery safety detachment device, which has the following beneficial effects: the battery tray is installed at the bottom of the vehicle body by means of explosive bolts; when the danger detection unit detects that the battery is in a dangerous state, it issues a command to control the explosion of the explosive bolts; the explosive bolts break after the explosion, causing the battery tray and the battery to detach from the bottom of the vehicle body; after the battery tray and the battery fall and touch the ground, the environment recognition unit collects information, identifies and determines the relatively safe areas around them, and drives the battery tray and the power battery fixed on the battery tray to be translated to a safe area by a translation drive device, thereby avoiding vehicle damage and personal injury when the battery explodes. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The specific embodiments of the present invention are further described in detail below with reference to the accompanying drawings:

[0022] Figure 1 A schematic structural diagram of a new energy vehicle battery safety disconnection device provided by the present invention;

[0023] Figure 2 for Figure 1 Schematic diagram of the local structure of part A in the middle;

[0024] Figure 3 for Figure 2 Schematic diagram of the local structure of part B in the middle;

[0025] Figure 4 A schematic diagram of the partial structure of the nozzle spraying gas in a new energy vehicle battery safety release device provided by the present invention;

[0026] Figure 5 This is a schematic diagram of the control system connections in a new energy vehicle battery safety disconnection device provided by the present invention.

[0027] Explanation of the numbers in the figure: 10. Vehicle body; 11. Threaded hole; 12. Sink; 20. Battery tray; 21. Connecting flange; 22. Mounting cavity; 30. Explosive bolt; 40. Translation drive device; 41. Energy storage tank; 42. Nozzle; 43. Jet pipe; 44. Closing plate; 45. Sliding block; 46. Strut; 47. Connecting ring; 48. Drive motor; 49. First screw; 410. Drive nut; 411. Extrusion block; 412. Control valve; 413. Micro switch; 50. Control system; 51. Hazard detection unit; 52. Environmental identification unit; 53. Information processing unit; 54. Proximity sensor. DETAILED DESCRIPTION

[0028] It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0029] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0030] It should be noted that all directional indications in the embodiments of the present invention (such as up-down-left-right-front-back...) are only used to explain the relative position relationship - movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly. The connection can be a direct connection or an indirect connection.

[0031] like Figure 1-Figure 5 As shown, a new energy vehicle battery safety detachment device includes a battery tray 20 installed at the bottom of the vehicle body 10, wherein a power battery is installed in the battery tray 20, and the battery tray 20 is connected to the bottom of the vehicle body 10 through an explosive bolt 30, wherein the explosive bolt 30 is provided with an explosive and the battery tray 20 is detached from the vehicle body 10 when the explosive explodes; the battery tray 20 is also provided with a translation drive device 40, and the translation drive device 40 is used to drive the battery tray 20 and the power battery fixed on the battery tray 20 to translate after the battery tray 20 is detached from the vehicle body 10.

[0032] By adopting the above technical solution, the battery tray 20 is installed at the bottom of the vehicle body 10 through the explosive bolt 30. When the danger detection unit 51 detects that the battery is in a dangerous state, it issues a command to control the explosive bolt 30 to explode. After the explosion, the explosive bolt 30 breaks, causing the battery tray 20 and the battery to separate from the bottom of the vehicle body 10. After the battery tray 20 and the battery fall to the ground, the environment recognition unit 52 collects information and identifies and judges the relatively safe target area around it. The battery tray 20 and the power battery fixed on the battery tray 20 are driven to the target area through the translation drive device 40 to avoid vehicle damage and personal injury when the battery explodes.

[0033] Specifically, a threaded hole 11 is provided at the bottom of the vehicle body 10 to cooperate with the explosive bolt 30. A recessed groove 12 is provided at one end of the threaded hole 11 near the battery tray 20. A connecting flange 21 is fixedly connected to the side of the battery tray 20. The end of the recessed groove 12 fits the connecting flange 21. When the explosive bolt 30 is threadedly connected to the vehicle body 10, the area filled with explosives in the explosive bolt 30 is located in the recessed groove 12. Therefore, when the explosive bolt 30 explodes, the high-pressure gas generated fills the recessed groove 12, and the high-pressure gas in the recessed groove 12 pushes the connecting flange 21 of the battery tray 20 downward, so that the high-pressure gas generated when the explosive bolt 30 is disconnected ejects the battery tray 20, making it easy for the battery tray 20 to quickly detach from the vehicle body 10 with the power battery.

[0034] Specifically, the translation drive device 40 includes an energy storage tank 41 mounted on the battery tray 20. The battery tray 20 is surrounded by nozzles 42, which are connected to the energy storage tank 41 and the nozzles 42 via a jet pipe 43. When the battery tray 20 is separated from the vehicle body 10, high-pressure gas is generated within the energy storage tank 41 and ejected at high speed from the nozzles 42, causing the battery tray 20 to translate away from the vehicle body 10. The high-speed gas ejected from the nozzles 42 quickly moves the power batteries to a safe area, resulting in a fast response. Specifically, a safety valve is installed on the energy storage tank 41 to relieve pressure when the pressure within the tank 41 exceeds a set value.

[0035] Specifically, the battery tray 20 is provided with a mounting cavity 22, and one side of the mounting cavity 22 is an open structure. The nozzle 42 is installed in the mounting cavity 22 and the ejection end of the nozzle 42 is facing the open side of the mounting cavity 22; the upper and lower ends of the open side of the mounting cavity 22 are hingedly connected with a sealing plate 44, and a slide groove is provided in the mounting cavity 22, and a sliding block 45 is slidably fitted in the slide groove, and a support rod 46 is hingedly connected to the sliding block 45, and the support rod 46 is hinged on the sealing plate 44 at one end away from the sliding block 45, and the sliding block 45 moves to drive the sealing plate 44 to tilt into the mounting cavity 22. The sliding block 45 moves to drive the sealing plate 44 to tilt and swing toward the side of the installation cavity 22, so that when the battery tray 20 is translated, the sealing plate 44 is opened to facilitate the ejection of gas in the nozzle 42 to generate power to translate the battery tray 20; when the power battery is in normal use, the sealing plate 44 is closed to prevent foreign matter from entering the installation cavity 22 and causing blockage of the nozzle 42; and when the nozzle 42 sprays high-pressure gas, the tilted sealing plate 44 guides the jet airflow.

[0036] Specifically, a connecting ring 47 is provided in the installation cavity 22. The connecting ring 47 is fixedly connected to the sliding blocks 45 at the upper and lower ends of the installation cavity 22. The upper and lower sliding blocks 45 are connected by the connecting ring 47, so that the upper and lower sliding blocks 45 in the installation cavity 22 move synchronously. A driving motor 48 corresponding to the nozzle 42 is installed in the battery tray 20. A first screw 49 is fixedly connected to the output shaft of the driving motor 48. A transmission nut 410 is fixedly connected to the connecting ring 47. The first screw 49 passes through the transmission nut 410 and is threadedly engaged with the transmission nut 410. The driving motor 48 drives the first screw 49 to rotate, drives the connecting ring 47 to move, and then drives the slider to move, and then drives the sealing plate 44 to tilt or stand upright to block the open end of the installation cavity 22. When the power battery is working normally, the sealing plate 44 stands upright to block the open end of the installation cavity 22, isolating the inner and outer areas of the installation cavity 22, and preventing external debris from entering the installation cavity 22 and clogging the nozzle 42.

[0037] Specifically, an extrusion block 411 is fixedly connected to the outer wall of the transmission nut 410, and a control valve 412 for controlling the on / off state of the jet pipe 43 is fixedly connected to the jet pipe 43. The control valve 412 is provided with a contact for switching the on / off state of the control valve 412. When the transmission nut 410 is away from the sealing plate 44, the extrusion block 411 contacts and squeezes the contact, causing the control valve 412 to open the jet pipe 43, facilitating the ejection of high-pressure gas generated in the energy storage tank 41 from the nozzle 42. When the drive motor 48 drives the sealing plate 44 to open, it automatically drives the transmission nut 410 to move. The movement of the transmission nut 410 drives the extrusion block 411 to squeeze the contact of the control valve 412, causing the jet pipe 43 to automatically open.

[0038] Specifically, a micro switch 413 is fixedly connected to the battery tray 20. The micro switch is located on the side of the extrusion block 411 away from the sealing plate 44. When the transmission nut 410 moves to touch the contact of the micro switch 413, the micro switch 413 switches and sends a signal. The control system 50 controls the material in the energy storage tank 41 to produce a large amount of gas, which is passed into the nozzle 42 and sprayed outward. The micro switch 413 can feedback the movement position of the sliding block 45 to prevent the generation of high-pressure gas in the energy storage tank 41 when the sealing plate 44 and the jet pipe 43 are not opened.

[0039] Specifically, multiple nozzles 42 are provided around the battery tray 20, and the energy storage tank 41 is connected to each of the multiple nozzles 42 via jet pipes 43. The energy storage tank 41 is equipped with a gas generator and an igniter that generate a large amount of gas. After the igniter is ignited, the gas generator produces a large amount of gas in a short period of time. The large amount of gas generated in the energy storage tank 41 enters the nozzle 42 through the jet pipe 43. Since one energy storage tank 41 is connected to multiple nozzles 42, multiple nozzles 42 share one energy storage tank 41. When the nozzles 42 in the corresponding direction of the battery tray 20 need to spray gas, the gas is transported to the corresponding nozzle 42 for spraying, thus avoiding the space occupied by multiple energy storage tanks 41.

[0040] Specifically, the battery tray 20 is provided with a control system 50, and the control system 50 includes a hazard detection unit 51, an environment recognition unit 52 and an information processing unit 53. The hazard detection unit 51 is used to detect hazard parameters to issue a fire risk signal, and the environment recognition unit 52 is used to identify the position and distance information of obstacles in the environment surrounding the battery tray 20. The hazard detection unit 51 and the environment recognition unit 52 are both communicatively connected to the information processing unit 53 to send the detection information to the information processing unit 53. The information processing unit 53 is electrically connected to the drive motor 48 and the igniter in the energy storage tank 41 to control the drive motor 48 to start and drive the sliding block 45 to move and control the energy storage tank 41 to ignite and eject; specifically, the battery tray 20 is provided with an independent power supply, which independently provides electrical energy for the electrical components in the safety release device;

[0041] A proximity sensor 54 is fixedly connected to the bottom of the battery tray 20. The proximity sensor 54 is used to detect the distance between the battery tray 20 and the ground. The proximity sensor 54 is in communication with the information processing unit 53. The detonator in the explosive bolt 30 is electrically connected to the information processing unit 53. The micro switch 413 is electrically connected to the information processing unit 53.

[0042] The information processing unit 53 is configured to receive detection information from the hazard detection unit 51 and the environment recognition unit 52, and determine whether the battery tray 20 is separated according to a set model based on the environmental parameter information detected by the hazard detection unit 51. When the model determines that the battery tray 20 is separated, the information processing unit 53 issues a detonation instruction to the detonator in the explosive bolt 30 to detonate the explosive bolt 30.

[0043] After the explosive bolt 30 is detonated, the information processing unit 53 obtains the obstacle position and distance information around the battery tray 20 sent by the environment recognition unit 52, determines the most open safe area in the surrounding environment according to the model, determines the nozzle 42 to spray in the corresponding direction according to the position information of the safe area, and issues a command to the drive motor 48 matched with the corresponding nozzle 42 to drive the opening of the sealing plate 44 and the control valve 412 on the corresponding jet pipe 43, and determines whether the bottom of the battery tray 20 is in contact with the ground according to the feedback information of the proximity sensor 54. When it is determined that the battery tray 20 is in contact with the ground, When the bottom of the battery tray 20 contacts the ground, and the drive nut 410 triggers the micro switch 413, causing the micro switch 413 signal to change, it indicates that the battery tray 20 contacts the ground, and the drive motor 48 drives the slide block 45 to move to the target position, the sealing plate 44 has been opened, and the squeezing block 411 squeezes the contact of the control valve 412, so that the jet pipe 43 is open and unblocked; a command is issued to the igniter in the energy storage tank 41 to ignite and generate high-pressure gas, so that the high-pressure gas is delivered to the corresponding nozzle 42 and quickly ejected to drive the battery tray 20 to move to the target safe area. The proximity sensor 54 is used to detect whether the bottom surface of the battery tray 20 is close to the ground. When the proximity sensor 54 senses contact with the ground, it sends information to the information processing unit 53 to avoid the situation where the battery tray 20 fails to detach from the vehicle body after the vehicle body is flipped over, resulting in invalid translation; the communication connection is through the transmission of signals to form communication between the connected devices, which can be through data line signal transmission or wireless signal transmission.

[0044] Specifically, the danger detection unit 51 includes a smoke sensor, a temperature sensor, and a pressure sensor, which detects different environmental parameters and sends the environmental parameter information to the information processing unit 53;

[0045] The environment recognition unit 52 includes a laser radar and an ultrasonic radar installed around the battery tray 20 , which measures the position and distance of surrounding obstacles through the laser radar and the ultrasonic radar and sends the obstacle information to the information processing unit 53 .

[0046] The parts not involved in this technical solution can be implemented using existing technologies.

[0047] The basic principles, main features, and characteristics of the present invention are shown and described above. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and modifications may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and modifications are intended to fall within the scope of the present invention. The scope of the present invention includes the appended claims and their equivalents.

Claims

1. A new energy vehicle battery safety disconnection device, characterized by: The invention comprises a battery tray (20) installed at the bottom of a vehicle body (10), wherein a power battery is installed in the battery tray (20), and the battery tray (20) is connected to the bottom of the vehicle body (10) via an explosive bolt (30), wherein an explosive is arranged in the explosive bolt (30) and the battery tray (20) is separated from the vehicle body (10) when the explosive explodes; and a translation drive device (40) is also arranged on the battery tray (20), and the translation drive device (40) is used to drive the battery tray (20) and the power battery fixed on the battery tray (20) to translate after the battery tray (20) is separated from the vehicle body (10).

2. A new energy vehicle battery safety disconnection device according to claim 1, characterized in that: The bottom of the vehicle body (10) is provided with a threaded hole (11) that cooperates with the explosive bolt (30), and a sinking groove (12) is provided at one end of the threaded hole (11) close to the battery tray (20). The side of the battery tray (20) is fixedly connected with a connecting flange (21), and the end of the sinking groove (12) is in contact with the connecting flange (21). When the explosive bolt (30) is connected to the vehicle body (10) by threading, the area filled with explosives in the explosive bolt (30) is located in the sinking groove (12).

3. A new energy vehicle battery safety disconnection device according to claim 2, characterized in that: The translation drive device (40) includes an energy storage tank (41) mounted on the battery tray (20), and nozzles (42) are arranged around the battery tray (20). The energy storage tank (41) and the nozzle (42) are connected via a jet pipe (43). When the battery tray (20) is separated from the vehicle body (10), high-pressure gas is generated in the energy storage tank (41) and ejected at high speed from the nozzle (42), causing the battery tray (20) to translate away from the vehicle body (10).

4. A new energy vehicle battery safety disconnection device according to claim 3, characterized in that: The battery tray (20) is provided with a mounting cavity (22), one side of the mounting cavity (22) is an open structure, the nozzle (42) is installed in the mounting cavity (22) and the ejection end of the nozzle (42) faces the open side of the mounting cavity (22); the upper and lower ends of the open side of the mounting cavity (22) are hingedly connected to a sealing plate (44), a slide groove is provided in the mounting cavity (22), a sliding block (45) is slidably fitted in the slide groove, a support rod (46) is hingedly connected to the sliding block (45), and the end of the support rod (46) away from the sliding block (45) is hinged on the sealing plate (44), and the sliding block (45) moves to drive the sealing plate (44) to tilt into the mounting cavity (22).

5. A new energy vehicle battery safety disconnection device according to claim 4, characterized in that: A connecting ring (47) is provided in the installation cavity (22), and the connecting ring (47) is fixedly connected to the sliding blocks (45) at the upper and lower ends of the installation cavity (22); a driving motor (48) corresponding to the nozzle (42) is installed in the battery tray (20), a first screw (49) is fixedly connected to the output shaft of the driving motor (48), and a transmission nut (410) is fixedly connected to the connecting ring (47), and the first screw (49) passes through the transmission nut (410) and is threadedly engaged with the transmission nut (410).

6. A new energy vehicle battery safety disconnection device according to claim 5, characterized in that: An extrusion block (411) is fixedly connected to the outer wall of the transmission nut (410), and a control valve (412) for controlling the on / off state of the jetting pipeline (43) is fixedly connected to the jetting pipeline (43). A contact for switching the on / off state of the control valve (412) is provided on the control valve (412). When the transmission nut (410) moves away from the sealing plate (44), the extrusion block (411) contacts and squeezes the contact so that the control valve (412) opens the jetting pipeline (43).

7. A new energy vehicle battery safety disconnection device according to claim 6, characterized in that: A micro switch (413) is fixedly connected inside the battery tray (20), and the micro switch (413) is located on a side of the extrusion block (411) away from the sealing plate (44). When the transmission nut (410) moves to touch the contact of the micro switch (413), the micro switch (413) is switched.

8. A new energy vehicle battery safety disconnection device according to any one of claims 3 to 7, characterized in that: The battery tray (20) is provided with a plurality of nozzles (42) on all sides, and the energy storage tank (41) is connected to the plurality of nozzles (42) respectively through a jet pipe (43).

9. The new energy vehicle battery safety disconnection device according to claim 7, characterized in that: The battery tray (20) is provided with a control system (50), the control system (50) comprising a hazard detection unit (51), an environment recognition unit (52) and an information processing unit (53), the hazard detection unit (51) being used to detect hazard parameters to issue a fire risk signal, the environment recognition unit (52) being used to identify the position and distance information of obstacles in the environment surrounding the battery tray (20), the hazard detection unit (51) and the environment recognition unit (52) being communicatively connected to the information processing unit (53) to send detection information to the information processing unit (53), and the information processing unit (53) being electrically connected to the drive motor (48) and the igniter in the energy storage tank (41); A proximity sensor (54) is fixedly connected to the bottom of the battery tray (20), and the proximity sensor (54) is used to detect the distance between the battery tray (20) and the ground. The proximity sensor (54) is communicatively connected to the information processing unit (53); the detonating device in the explosive bolt (30) is electrically connected to the information processing unit (53); and the micro switch (413) is electrically connected to the information processing unit (53); The information processing unit (53) is used to receive detection information from the danger detection unit (51) and the environment recognition unit (52), and to determine whether the battery tray (20) is separated according to a set model based on the environmental parameter information detected by the danger detection unit (51); when it is determined according to the model that the battery tray (20) is separated, a detonation instruction is issued to the detonating device in the explosive bolt (30) to cause it to detonate; After the explosive bolt (30) is detonated, the information processing unit (53) obtains the position and distance information of obstacles around the battery tray (20) sent by the environment recognition unit (52), determines the most open safe area in the surrounding environment according to the model, determines the nozzle (42) of the corresponding direction to spray according to the position information of the safe area, issues a command to the drive motor (48) matched with the corresponding nozzle (42) to drive the opening of the sealing plate (44) and the control valve (412) on the corresponding jet pipe (43), and determines whether the bottom of the battery tray (20) is in contact with the ground according to the feedback information of the proximity sensor (54). When it is determined that the bottom of the battery tray (20) is in contact with the ground, and the transmission nut (410) touches the micro switch (413) so that the signal of the micro switch (413) changes, an instruction is issued to the igniter in the energy storage tank (41) to ignite and generate high-pressure gas, so that the high-pressure gas is transported to the corresponding nozzle (42) and is quickly sprayed out to drive the battery tray (20) to move to the target safe area.

10. A new energy vehicle battery safety disconnection device according to claim 9, characterized in that: The danger detection unit (51) includes a smoke sensor, a temperature sensor, and a pressure sensor, and detects different environmental parameters through the smoke sensor, the temperature sensor, and the pressure sensor and sends the environmental parameter information to the information processing unit (53); The environment recognition unit (52) includes a laser radar and an ultrasonic radar installed around the battery tray (20), and measures the position and distance of surrounding obstacles through the laser radar and the ultrasonic radar and sends the obstacle information to the information processing unit (53).

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