Vehicle battery fire extinguishing auxiliary device with alarm function

Abstract

The present invention discloses a vehicle battery fire extinguishing auxiliary device with an alarm function, which relates to the field of vehicle battery monitoring technology. The device comprises a test bench and a battery body. The battery body is placed above the test bench. A gantry is fixedly connected to the end face of the test bench. A connecting groove and a vertical groove are provided on both sides of the gantry. A connecting pipe is fixedly connected through the gantry. Nozzles are equidistantly arranged below the connecting pipe. The device also comprises a battery temperature anomaly detection mechanism and a fire extinguishing area expansion mechanism. The battery temperature anomaly detection mechanism comprises symmetrically arranged two-way memory alloy plates and a movable frame. When the temperature of the battery body itself reaches the high-temperature phase trigger value of the two-way memory alloy plates, the two-way memory alloy plates are driven to automatically bend, thereby triggering an alarm to work. When the temperature of the battery body reaches the high-temperature phase trigger value of the two-way memory alloy plates, the alarm can be activated immediately without waiting for the temperature or smoke to reach the threshold of a remote sensor, thereby greatly shortening the response time.

Description

Technical Field

[0001] The present invention relates to the technical field of vehicle battery monitoring, in particular to a vehicle battery fire extinguishing auxiliary device with an alarm function. Background Art

[0002] Vehicle batteries are devices used to store electrical energy and provide power to the vehicle. Their core functions are to power the vehicle's starting, lighting, and ignition systems (SLI), or to serve as the primary power source in new energy vehicles. After vehicle battery production is completed, their performance needs to be tested. During the vehicle battery testing process, especially when safety tests (such as thermal runaway tests) are involved, fire extinguishing assistance devices are required to extinguish fires in the event of a battery fire or other abnormal conditions, thereby preventing the spread of fire and protecting the safety of testers and equipment.

[0003] Existing fire extinguishing auxiliary devices usually monitor the vehicle battery during the inspection process through temperature sensors or smoke sensors. However, the installation position of the sensors is generally kept at a distance from the vehicle battery. At this time, the signals detected by the sensors (such as temperature increase or smoke generation) have lagged behind the actual state inside the vehicle battery. In the early stages of battery thermal runaway, the temperature or smoke has not yet reached the trigger threshold of the sensor, which not only makes it impossible to detect abnormal conditions in time and achieve early warning. At this time, when the sensor triggers the alarm, the battery is already in a high temperature or thermal runaway state, missing the best time to extinguish the fire, increasing the risk of fire spread, and before the fire extinguishing device is activated, the thermal runaway inside the battery has intensified, making fire extinguishing more difficult and even causing more serious fires.

[0004] Therefore, the present invention proposes a vehicle battery fire extinguishing auxiliary device with an alarm function to solve the above problems. Summary of the Invention

[0005] (1) Technical problems solved

[0006] In view of the deficiencies in the prior art, the present invention provides a vehicle battery fire extinguishing auxiliary device with an alarm function, which can effectively solve the problems in the prior art.

[0007] (2) Technical solution

[0008] To achieve the above object, the object of the present invention can be achieved through the following technical solutions:

[0009] A vehicle battery fire extinguishing auxiliary device with an alarm function includes a test bench and a battery body, the battery body is placed above the test bench, the upper end face of the test bench is fixedly connected to a gantry, both sides of the gantry are provided with connecting grooves and vertical grooves, a connecting pipe is fixedly connected through the gantry, and nozzles are equidistantly arranged below the connecting pipe. The device also includes a battery temperature anomaly detection mechanism and a fire extinguishing area expansion mechanism, the battery temperature anomaly detection mechanism includes symmetrically arranged two-way memory alloy plates and a movable frame, the two-way memory alloy plates are used to be attached to the side walls of the battery body, the battery temperature anomaly detection mechanism is used to promptly reflect the temperature conditions inside the battery body, and the fire extinguishing area expansion mechanism is used to expand the spraying range of the fire extinguishing agent.

[0010] As a further solution of the present invention: a connecting block is fixedly connected to the center of the two-way memory alloy plate away from the battery body, and a connecting column is rotatably connected to the side of the connecting block away from the two-way memory alloy plate, and the connecting column is slidably connected to the gantry.

[0011] As a further solution of the present invention: a threaded groove is provided on the outer surface of the connecting column, and the movable frame is threadedly connected to the outer surface of the connecting column through the threaded groove. Side panels are provided on both sides of the movable frame, and the side panels are fixedly connected to the side walls of the gantry. Through grooves are provided on the side panels, and the movable frame is slidably connected between the two through grooves. A knob is fixedly connected to the end of the connecting column away from the connecting block.

[0012] As a further solution of the present invention: the movable frame is fixedly connected to a first contact on the side close to the gantry, and the gantry is fixedly connected to a second contact on the side close to the movable frame, the first contact and the second contact are on the same horizontal line, the first contact and the second contact are initially in contact, an alarm is electrically connected between the first contact and the second contact, and the alarm is fixedly connected to the side wall of the gantry.

[0013] As a further solution of the present invention: the fire extinguishing area expansion mechanism includes symmetrically arranged movable plates, each of which is slidably connected to a connecting groove, and a shift rod is symmetrically fixedly connected between the two movable plates. The two shift rods are respectively located on both sides of the nozzle, and the shift rods are in contact with the nozzle.

[0014] As a further solution of the present invention: a universal ball is fixedly connected between the nozzle and the connecting pipe, and the nozzle, the universal ball and the connecting pipe are all connected.

[0015] As a further solution of the present invention: the lower end surfaces of the movable plates are fixedly connected to the connecting plates, the lower end surfaces of the connecting plates are provided with sliding grooves, the sliding grooves are slidably connected to sliding columns, the lower ends of the sliding columns are fixedly connected to the fixed plates, the lower end surfaces of the fixed plates away from the sliding columns are fixedly connected to the rotating shafts, the lower ends of the rotating shafts are rotatably connected to support blocks, and the support blocks are fixedly connected to the side walls of the gantry.

[0016] As a further solution of the present invention: the outer surface of the rotating shaft is provided with spiral grooves at equal intervals, the outer surface of the rotating shaft is provided with lifting plates, the lifting plates are slidably connected in the vertical grooves, and the lifting plates are slidably connected to the outer surface of the rotating shaft through the spiral grooves.

[0017] As a further solution of the present invention: both sides of the lifting plate are rotatably connected with pull plates, and the ends of the pull plates away from the lifting plate are rotatably connected to the side walls of the movable frame.

[0018] (3) Beneficial effects

[0019] Compared with the prior art, the present invention provides a vehicle battery fire extinguishing auxiliary device with an alarm function, which has the following beneficial effects:

[0020] 1. The battery temperature anomaly detection mechanism is set up, which can drive the two-way memory alloy plate to automatically bend and trigger the alarm to work when the temperature of the battery body reaches the high-temperature phase trigger value of the two-way memory alloy plate. Not only can the alarm be activated immediately when the battery body temperature reaches the high-temperature phase trigger value of the two-way memory alloy plate, without waiting for the temperature or smoke to reach the threshold of the remote sensor, thereby greatly shortening the response time, but also can issue a warning signal before the battery body temperature reaches a dangerous level, buying precious time for taking preventive measures, avoiding missing the best time to extinguish the fire, reducing the heat and toxic gases that need to be handled during the fire extinguishing process, thereby improving the success rate of fire extinguishing and reducing the risk of fire spread.

[0021] 2. The threaded groove can be used to drive the connecting column to move on the movable plate and adjust the initial position of the two-way memory alloy plate. This not only allows the two-way memory alloy plate to always fit the side walls of battery bodies of different sizes, but also makes it suitable for a variety of battery bodies without the need to design a dedicated alarm installation solution for each battery body, thereby improving the overall versatility and economy. In addition, the battery body above the test bench can be limited, increasing the versatility and flexibility of the two-way memory alloy plate.

[0022] 3. The fire extinguishing area expansion mechanism can generate an early warning when the battery body temperature is too high. When the nozzle sprays the fire extinguishing material or cooling gas to the battery body, it drives the nozzle to swing back and forth. This not only ensures that the fire extinguishing material or cooling gas evenly covers the surface of the battery body, rather than just the local area, but also helps to quickly reduce the overall temperature of the battery body, effectively inhibit the further development of thermal runaway, avoid the waste of fire extinguishing agent due to insufficient or excessive local spraying, and improve the utilization rate of the fire extinguishing agent. Moreover, by evenly spraying cooling gas or fire extinguishing material, the temperature of the battery body can be quickly reduced, preventing thermal runaway from spreading to other battery cells or the entire battery pack, reducing hot spots inside the battery body, reducing the risk of re-ignition, and ensuring the durability of the fire extinguishing effect.

[0023] 4. By setting the lifting plate and pulling plate, the shaft can be automatically driven to rotate when the two-way memory alloy plate is deformed and the early warning is triggered, so that the nozzle can be driven to swing back and forth left and right without the use of additional driving power. The traditional driving method usually requires additional power and complex circuits to control the swing of the nozzle. These power supplies and circuits are prone to failure in high temperature, humidity or fire environments. The design of the nozzle swing is realized by mechanical transmission (such as lifting plates and pulling plates), without the need for additional power supply, reducing the risk of system failure caused by power failure or circuit short circuit, and ensuring that the nozzle can swing reliably in an emergency to spray fire extinguishing materials or cooling gas. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] To facilitate understanding by those skilled in the art, the present invention is further described below with reference to the accompanying drawings.

[0025] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0026] Figure 2 For the present invention Figure 1 Schematic diagram of the enlarged structure of area A in the middle;

[0027] Figure 3 For the present invention Figure 1 Schematic diagram of the enlarged structure of the middle B area;

[0028] Figure 4 This is a schematic diagram of the connection structure of the two-way shape memory alloy plate of the present invention;

[0029] Figure 5 This is a schematic diagram of the connection structure between the movable frame and the lifting plate of the present invention;

[0030] Figure 6 For the present invention Figure 5 Schematic diagram of the enlarged structure of the middle C area;

[0031] Figure 7 It is a schematic diagram of the connection structure between the movable plate and the rotating shaft of the present invention.

[0032] In the figure: 1. Test bench; 2. Battery body; 3. Gantry; 4. Connecting pipe; 5. Nozzle;

[0033] 601, two-way shape memory alloy plate; 602, connecting column; 603, knob; 604, threaded groove; 605, movable frame; 606, side plate; 607, through-slot; 608, first contact; 609, second contact; 610, alarm; 611, connecting block;

[0034] 701, lifting plate; 702, moving plate; 703, lever; 704, pulling plate; 705, rotating shaft; 706, spiral groove; 707, supporting block; 708, fixing plate; 709, sliding column; 710, connecting plate; 711, sliding groove;

[0035] 8. Universal ball; 9. Vertical groove; 10. Connecting groove. DETAILED DESCRIPTION

[0036] The technical solutions of the present invention will be clearly and completely described below in conjunction with the embodiments. Obviously, the embodiments described are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0037] This embodiment is a vehicle battery fire extinguishing auxiliary device with an alarm function, such as Figure 1 - Figure 7 As shown, it includes a test bench 1 and a battery body 2, the battery body 2 is placed above the test bench 1, and the upper end face of the test bench 1 is fixedly connected to a gantry 3, and connecting grooves 10 and vertical grooves 9 are opened on both sides of the gantry 3. A connecting pipe 4 is fixedly connected to the gantry 3, and nozzles 5 are equidistantly arranged below the connecting pipe 4. It also includes a battery temperature anomaly detection mechanism and a fire extinguishing area expansion mechanism. The battery temperature anomaly detection mechanism includes a symmetrically arranged two-way memory alloy plate 601 and a movable frame 605. The two-way memory alloy plate 601 is used to fit onto the side wall of the battery body 2, and the battery temperature anomaly detection mechanism is used to timely reflect the temperature condition inside the battery body 2.

[0038] In this embodiment, Figure 4 As shown, a connecting block 611 is fixedly connected to the center of the side of the two-way memory alloy plate 601 away from the battery body 2, and a connecting column 602 is rotatably connected to the side of the connecting block 611 away from the two-way memory alloy plate 601. The connecting column 602 is slidably connected to the gantry 3. When the two-way memory alloy plate 601 undergoes high-temperature deformation with the connecting block 611 as the center, it will bend, pushing the connecting block 611 to drive the connecting column 602 to move on the gantry 3.

[0039] In this embodiment, Figure 2 As shown, a thread groove 604 is provided on the outer surface of the connecting column 602, and the movable frame 605 is threadedly connected to the outer surface of the connecting column 602 through the thread groove 604. Side panels 606 are provided on both sides of the movable frame 605, and the side panels 606 are fixedly connected to the side walls of the gantry 3. A through groove 607 is provided on the side panels 606, and the movable frame 605 is slidably connected between the two through grooves 607. A knob 603 is fixedly connected to the end of the connecting column 602 away from the connecting block 611. When the knob 603 is turned to drive the connecting column 602 to rotate while preventing the movable frame 605 from moving, the thread groove 604 provided on the outer surface of the connecting column 602 can drive the connecting column 602 to rotate and slide horizontally on the movable frame 605.

[0040] In this embodiment, Figure 2 As shown, the side of the movable frame 605 close to the gantry 3 is fixedly connected to the first contact 608, and the side of the gantry 3 close to the movable frame 605 is fixedly connected to the second contact 609, the first contact 608 and the second contact 609 are on the same horizontal line, and the first contact 608 and the second contact 609 are initially in contact, and an alarm 610 is electrically connected between the first contact 608 and the second contact 609, and the alarm 610 is fixedly connected to the side wall of the gantry 3. When the movable frame 605 moves horizontally away from the gantry 3, it will drive the first contact 608 to move synchronously, so that the first contact 608 and the second contact 609 are gradually separated. After the first contact 608 and the second contact 609 are completely separated, the alarm 610 can be turned on to alarm.

[0041] In the existing technology, the installation position of the sensor is generally kept at a distance from the vehicle battery. At this time, the signal monitored by the sensor (such as temperature rise or smoke generation) has lagged behind the actual state of the vehicle battery. In the early stage of battery thermal runaway, the temperature or smoke has not yet reached the trigger threshold of the sensor, which not only makes it impossible to detect abnormal conditions in time and achieve early warning, but also when the sensor triggers the alarm, the battery is already in a high temperature or thermal runaway state, missing the best time to extinguish the fire, increasing the risk of fire spread, and before the fire extinguishing device is activated, the thermal runaway inside the battery has intensified, making fire extinguishing more difficult and even causing more serious fires. Compared with the existing technology, it can be used in the battery When the temperature of the battery body 2 itself reaches the high-temperature phase trigger value of the two-way memory alloy plate 601, the two-way memory alloy plate 601 is driven to automatically bend, triggering the alarm 610 to work. Not only can the alarm 610 be activated immediately when the temperature of the battery body 2 reaches the high-temperature phase trigger value of the two-way memory alloy plate 601, without waiting for the temperature or smoke to reach the threshold of the remote sensor, thereby greatly shortening the response time, but also an early warning signal can be issued before the temperature of the battery body 2 reaches a dangerous level, buying precious time for taking preventive measures, avoiding missing the best time to extinguish the fire, reducing the heat and toxic gases that need to be handled during the fire extinguishing process, thereby improving the success rate of fire extinguishing and reducing the risk of fire spread.

[0042] In other aspects, this embodiment also provides a fire extinguishing area expansion mechanism for expanding the spraying range of the fire extinguishing agent, such as Figure 1 、 Figure 3 、 Figure 5 - Figure 7 As shown, the fire extinguishing area expansion mechanism includes symmetrically arranged movable plates 702, each of which is slidably connected to the connecting groove 10, and a lever 703 is symmetrically fixedly connected between the two movable plates 702. The two levers 703 are respectively located on both sides of the nozzle 5, and the levers 703 are in contact with the nozzle 5.

[0043] In this embodiment, Figure 1 and Figure 3 As shown, a universal ball 8 is fixedly connected between the nozzle 5 and the connecting pipe 4. The nozzle 5, the universal ball 8 and the connecting pipe 4 are all connected. Through the set universal ball 8, the nozzle 5 can be rotated under the connecting pipe 4. At the same time, the connecting pipe 4 can transport the fire extinguishing material or cooling gas to the inside of the nozzle 5 through the universal ball 8 and spray it out from the nozzle 5.

[0044] In this embodiment, Figure 5 and Figure 7As shown, the lower end surface of the movable plate 702 is fixedly connected to the connecting plate 710, and the lower end surface of the connecting plate 710 is provided with a sliding groove 711. The sliding groove 711 is slidably connected to the sliding column 709. The lower end of the sliding column 709 is fixedly connected to the fixed plate 708. The lower end surface of the fixed plate 708 is fixedly connected to the side of the sliding column 709 away from the sliding column 709. The lower end of the rotating shaft 705 is rotatably connected to the support block 707. The support block 707 is fixedly connected to the side wall of the gantry 3. When the rotating shaft When the upper end surface of the support block 707 rotates, the rotating shaft 705 can move the sliding column 709 with the rotating shaft 705 as the center through the fixed plate 708, and at the same time drive the sliding column 709 to slide in the sliding groove 711 opened on the lower end surface of the connecting plate 710. When the sliding column 709 slides in the sliding groove 711, it will move the connecting plate 710 through the sliding column 709, driving the movable plate 702 connected to the upper end surface of the connecting plate 710 to move horizontally back and forth.

[0045] In this embodiment, Figure 5 As shown, spiral grooves 706 are equidistantly provided in an annular manner on the outer surface of the rotating shaft 705, and a lifting plate 701 is sleeved on the outer surface of the rotating shaft 705. The lifting plates 701 are slidably connected to the vertical groove 9, and the lifting plates 701 are slidably connected to the outer surface of the rotating shaft 705 through the spiral grooves 706. When the lifting plates 701 move vertically up and down on the outer surface of the rotating shaft 705, the lifting plates 701 will squeeze the spiral grooves 706, pushing the position of the spiral grooves 706 to change, so that the spiral grooves 706 can adapt to the lifting plates 701, thereby driving the rotating shaft 705 to rotate during the process of changing the position of the spiral grooves 706.

[0046] In this embodiment, Figure 5 As shown, both sides of the lifting plate 701 are rotatably connected with pull plates 704, and the ends of the pull plates 704 away from the lifting plate 701 are rotatably connected to the side walls of the movable frame 605. When the lifting plate 701 moves horizontally, it will drive the lower ends of the pull plates 704 connected on both sides to move horizontally synchronously, so that the pull plates 704 change between a vertical shape and an inclined shape, pulling the lifting plate 701 to slide up and down in the vertical slot 9.

[0047] Compared with the existing technology, when an early warning is issued when the temperature of the battery body 2 is too high and the nozzle 5 sprays the fire extinguishing material or cooling gas to the battery body 2, the nozzle 5 is driven to swing back and forth. This not only ensures that the fire extinguishing material or cooling gas evenly covers the surface of the battery body 2, rather than just a local area, but also helps to quickly reduce the overall temperature of the battery body 2, effectively inhibit the further development of thermal runaway, avoid the waste of fire extinguishing agent due to insufficient or excessive local spraying, and improve the utilization rate of the fire extinguishing agent. Moreover, by evenly spraying the cooling gas or fire extinguishing material, the temperature of the battery body 2 can be quickly reduced, and the thermal runaway can be prevented from spreading to other battery cells or the entire battery pack, reducing the hot spots inside the battery body 2, reducing the risk of re-ignition, and ensuring the durability of the fire extinguishing effect.

[0048] The working process and principles involved in the overall content of the above embodiment are as follows:

[0049] It should be noted that: Dual-phase alloy 601 (also known as dual-phase alloy or dual shape memory alloy) is a type of alloy material with a special shape memory effect. It can achieve two different shapes at different temperatures. The most common dual-phase memory effect alloy is nickel-titanium alloy (Ni-Ti alloy), also known as "Nitinol" alloy or "superelastic alloy". It usually has the following two shapes: high-temperature phase and low-temperature phase. In the high-temperature phase (usually above room temperature), the material is in an elastic shape and can undergo large-scale elastic deformation. In the low-temperature phase (usually below room temperature), the material will return to the pre-set state. Initial shape. Specifically, the transition temperature (two-way transition temperature) of nickel-titanium alloy (Ni-Ti alloy) can be adjusted according to the composition and processing of the alloy. Generally, the high-temperature phase transition temperature ranges from about 60-100°C, and the low-temperature phase transition temperature ranges from about -10 to 30°C. This range can be adjusted according to the needs of specific applications. It should be noted that the shape memory process of the two-way shape memory effect alloy is reversible and can be switched between high and low temperatures multiple times while maintaining the same memory effect. In this embodiment, the low-temperature phase of the two-way shape memory alloy plate 601 is horizontal, and the high-temperature phase is curved.

[0050] Secondly, both ends of the connecting pipe 4 passing through the gantry 3 are respectively connected to the container storing the fire extinguishing material or cooling gas, and the fire extinguishing material or cooling gas is transported to the nozzle 5 for spraying through the connecting pipe 4 and the power equipment (such as a mechanical pump).

[0051] When the staff needs to conduct an experiment on the battery body 2, the battery body 2 is first placed on the test bench 1, and then the positions of the movable frames 605 on both sides are controlled to keep the first contact 608 connected on the side wall of the movable frame 605 and the second contact 609 connected on the side wall of the gantry 3 always in contact, and then the knob 603 is turned to drive the connecting column 602 to rotate. Since the outer surface of the connecting column 602 is provided with a thread groove 604, and the movable frame 605 is threadedly connected to the outer surface of the connecting column 602 through the thread groove 604, during the rotation of the connecting column 602, it will rotate and move horizontally on the movable frame 605, and move away from the rotating shaft. The connecting block 611 connected to one end of the button 603 pushes the two-way memory alloy plate 601 to move horizontally on the upper end surface of the test bench 1, approaching the battery body 2 placed above the test bench 1, so that the two-way memory alloy plate 601 is attached to the side wall of the battery body 2. This not only allows the two-way memory alloy plate 601 to always adhere to the side walls of battery bodies 2 of different sizes, but also makes it suitable for various types of battery bodies 2 without having to design a dedicated alarm installation solution for each battery body 2, thereby improving the overall versatility and economy. In addition, the battery body 2 above the test bench 1 can be limited in position, increasing the versatility and flexibility of the two-way memory alloy plate 601.

[0052] After the two-way memory alloy plate 601 is attached to the side wall of the battery body 2, as the temperature of the battery body 2 rises during the experiment and reaches the high-temperature phase trigger value of the two-way memory alloy plate 601, the two-way memory alloy plate 601 will deform from a horizontal shape to a curved shape. During the deformation of the double-layer memory alloy plate, the connecting block 611 will be used as the center to pull the two sides of the two-way memory alloy plate 601 closer to each other and bend, while pushing the connecting block 611 close to the gantry 3, driving the connecting column 602 to slide horizontally on the gantry 3. Since the outer surface of the connecting column 602 is provided with a threaded groove 604, the connecting column 602 will push the movable frame 605 to slide horizontally through the through groove 607 provided on the side plate 606 and away from the gantry 3 during the horizontal movement. At this time, the side of the movable frame 605 The first contact 608 connected to the wall will separate from the second contact 609 connected to the gantry 3. After the first contact 608 and the second contact 609 are completely separated, the alarm 610 electrically connected between the first contact 608 and the second contact 609 will start to work. Not only can the alarm 610 be activated immediately when the temperature of the battery body 2 reaches the high-temperature phase trigger value of the two-way memory alloy plate 601, without waiting for the temperature or smoke to reach the threshold of the remote sensor, thereby greatly shortening the response time, but also an early warning signal can be issued before the temperature of the battery body 2 reaches a dangerous level, buying precious time for taking preventive measures, avoiding missing the best time to extinguish the fire, reducing the heat and toxic gases that need to be handled during the fire extinguishing process, thereby improving the success rate of fire extinguishing and reducing the risk of fire spreading.

[0053] During the operation of the alarm 610, the connecting pipe 4 will transport the fire extinguishing material or cooling gas to the inside of the nozzle 5 and spray it out through the nozzle 5. At the same time, as the movable frame 605 moves horizontally in the through slot 607 away from the gantry 3, since the two sides of the movable frame 605 are rotatably connected with the pull plates 704, and the ends of the pull plates 704 away from the movable frame 605 are rotatably connected to the side walls of the lifting plate 701, the movable frame 605 will pull the lifting plate 701 to slide vertically downward in the vertical slot 9 through the pull plates 704. During the vertical descent of the lifting plate 701, the lifting plate 701 will move along the spiral groove 706 path opened on the outer surface of the rotating shaft 705, exert pressure on the spiral groove 706, and drive the rotating shaft 705 to move between the lifting plate 701 and the support The upper end surface of block 707 rotates, driving the fixed plate 708 connected to the upper end of the rotating shaft 705 to move around the rotating shaft 705. As the fixed plate 708 moves, since the upper end of the fixed plate 708 is connected to the sliding post 709, the sliding post 709 is slidably connected to the sliding groove 711 opened on the lower end surface of the connecting plate 710, and the connecting plate 710 is fixedly connected to the lower end surface of the movable plate 702, the fixed plate 708 will drive the sliding post 709 to rotate synchronously with the rotating shaft 705 as the center of the circle, and at the same time drive the sliding post 709 to slide back and forth in the sliding groove 711 connected to the lower end of the connecting plate 710, so that the sliding post 709 toggles the connecting plate 710 through the sliding groove 711, driving the movable plate 702 connected to the upper end surface of the connecting plate 710 to move in the dragon The connecting groove 10 provided on the side wall of the gantry 3 moves back and forth horizontally. During the horizontal reciprocating movement of the movable plate 702, the lever 703 connected between the two movable plates 702 will fit the outer wall of the nozzle 5 to move the nozzle 5 synchronously. A universal ball 8 is connected between the upper end of the nozzle 5 and the connecting pipe 4. Therefore, when the nozzle 5 is moved by the lever 703, it will swing under the universal ball 8. When the fire extinguishing material or cooling gas is sprayed to the battery body 2, the nozzle 5 is driven to swing back and forth left and right, which not only ensures that the fire extinguishing material or cooling gas evenly covers the surface of the battery body 2, rather than just a local area, but also helps to quickly reduce the overall temperature of the battery body 2, effectively suppress the further development of thermal runaway, and avoid insufficient or excessive local spraying. The waste of fire extinguishing agent caused by this can be improved, and the utilization rate of fire extinguishing agent can be improved. Moreover, by evenly spraying cooling gas or fire extinguishing material, the temperature of the battery body 2 can be quickly reduced, and thermal runaway can be prevented from spreading to other battery cells or the entire battery pack, thereby reducing hot spots inside the battery body 2 and the risk of reignition, thereby ensuring the durability of the fire extinguishing effect. In addition, through the provided lifting plate 701 and pulling plate 704, the rotating shaft 705 can be automatically driven to rotate in the process of the deformation triggering early warning of the two-way memory alloy plate 601, thereby driving the nozzle 5 to swing back and forth left and right, without the need for an additional driving power supply. The traditional driving method usually requires an additional power supply and a complex circuit to control the swing of the nozzle 5. These power supplies and circuits are prone to failure in high temperature, humidity or fire environments.The design of achieving the swing of the sprinkler head 5 through mechanical transmission (such as the lifting plate 701 and the pulling plate 704) does not require an additional power supply, reducing the risk of system failure due to power failure or circuit short circuit, and ensuring that the sprinkler head 5 can swing reliably to spray fire extinguishing materials or cooling gas in an emergency.

[0054] The preferred embodiments of the present invention disclosed above are intended only to help illustrate the present invention. These preferred embodiments do not exhaustively describe all details, nor do they limit the present invention to the specific embodiments described. Obviously, many modifications and variations are possible based on the content of this specification. These embodiments are selected and described in detail in this specification to better explain the principles and practical applications of the present invention, thereby enabling those skilled in the art to better understand and utilize the present invention. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. A vehicle battery fire extinguishing auxiliary device with an alarm function, comprising a test bench (1) and a battery body (2), wherein the battery body (2) is placed above the test bench (1), a gantry (3) is fixedly connected to the upper end face of the test bench (1), a connecting groove (10) and a vertical groove (9) are provided on both sides of the gantry (3), a connecting pipe (4) is fixedly connected to the gantry (3), and nozzles (5) are equidistantly arranged below the connecting pipe (4), characterized in that: It also includes a battery temperature anomaly detection mechanism and a fire extinguishing area expansion mechanism; The battery temperature anomaly detection mechanism comprises a symmetrically arranged two-way memory alloy plate (601) and a movable frame (605), wherein the two-way memory alloy plate (601) is used to be attached to the side wall of the battery body (2), a connecting block (611) is fixedly connected to the center of the side of the two-way memory alloy plate (601) away from the battery body (2), and a connecting column (602) is rotatably connected to the side of the connecting block (611) away from the two-way memory alloy plate (601), the connecting column (602) penetrates and is slidably connected to the gantry (3), and a threaded groove (604) is provided on the outer surface of the connecting column (602). The movable frame (605) is threadedly connected to the outer surface of the connecting column (602) through a threaded groove (604). Side plates (606) are provided on both sides of the movable frame (605). The side plates (606) are fixedly connected to the side walls of the gantry (3). Through grooves (607) are provided on the side plates (606). The movable frame (605) is slidably connected between the two through grooves (607). A knob (603) is fixedly connected to one end of the connecting column (602) away from the connecting block (611). The battery temperature anomaly detection mechanism is used to timely reflect the temperature condition inside the battery body (2); The fire extinguishing area expansion mechanism is used to expand the spraying range of the fire extinguishing agent.

2. A vehicle battery fire extinguishing auxiliary device with an alarm function according to claim 1, characterized in that: A first contact (608) is fixedly connected to one side of the movable frame (605) close to the gantry frame (3), and a second contact (609) is fixedly connected to one side of the gantry frame (3) close to the movable frame (605). The first contact (608) and the second contact (609) are located on the same horizontal line. The first contact (608) and the second contact (609) are in contact in an initial state. An alarm (610) is electrically connected between the first contact (608) and the second contact (609), and the alarm (610) is fixedly connected to a side wall of the gantry frame (3).

3. The vehicle battery fire extinguishing auxiliary device with alarm function according to claim 1, characterized in that: The fire extinguishing area expansion mechanism includes symmetrically arranged moving plates (702), each of the moving plates (702) is slidably connected to the connecting groove (10), and a shifting rod (703) is symmetrically fixedly connected between the two moving plates (702). The two shifting rods (703) are respectively located on both sides of the nozzle (5), and each of the shifting rods (703) is in contact with the nozzle (5).

4. The vehicle battery fire extinguishing auxiliary device with alarm function according to claim 3, characterized in that: A universal ball (8) is fixedly connected between the nozzle (5) and the connecting pipe (4), and the nozzle (5), the universal ball (8) and the connecting pipe (4) are all connected.

5. The vehicle battery fire extinguishing auxiliary device with alarm function according to claim 4, characterized in that: The lower end surface of the movable plate (702) is fixedly connected to a connecting plate (710), the lower end surface of the connecting plate (710) is provided with a sliding groove (711), the sliding groove (711) is slidably connected to a sliding column (709), the lower end of the sliding column (709) is fixedly connected to a fixed plate (708), the lower end surface of the fixed plate (708) away from the sliding column (709) is fixedly connected to a rotating shaft (705), the lower end of the rotating shaft (705) is rotatably connected to a support block (707), and the support block (707) is fixedly connected to the side wall of the gantry (3).

6. The vehicle battery fire extinguishing auxiliary device with alarm function according to claim 5, characterized in that: The outer surface of the rotating shaft (705) is provided with spiral grooves (706) at equal intervals in an annular manner. The outer surface of the rotating shaft (705) is provided with a lifting plate (701). The lifting plates (701) are slidably connected to the vertical grooves (9). The lifting plates (701) are slidably connected to the outer surface of the rotating shaft (705) through the spiral grooves (706).

7. The vehicle battery fire extinguishing auxiliary device with alarm function according to claim 6, characterized in that: Both sides of the lifting plate (701) are rotatably connected to pull plates (704), and one end of the pull plate (704) away from the lifting plate (701) is rotatably connected to the side wall of the movable frame (605).

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