Auxiliary monitoring equipment and alarm device for thermal runaway of new energy batteries in battery packs

Abstract

The present invention discloses an auxiliary monitoring device and alarm device for thermal runaway of new energy batteries in a battery pack, including a main body and a battery pack slot, wherein the battery pack slot is provided at the top of the main body, and a fitting slot is provided inside the battery pack slot, and also includes an isolation jet mechanism, which is provided inside the fitting slot, and the isolation jet mechanism includes a transmission gas pipe rack. The present invention can quickly take away the temperature diffused outward from the battery pack in thermal runaway through the characteristics of low-temperature flame-retardant gas and rapid fluidity, thereby increasing the isolation effect between each two single battery packs, avoiding the high temperature or thermal runaway single battery pack that has already caused internal combustion due to high temperature and causing rapid impact on the single battery pack that has not caused thermal runaway nearby, thereby greatly prolonging the time for the single battery pack in thermal runaway to affect other battery packs, thereby prolonging the speed of battery pack catching fire or exploding, and prolonging the escape time of people inside the electric vehicle.

Description

Technical Field

[0001] The present invention relates to the field of monitoring and alarm technology, and in particular to an auxiliary monitoring device and an alarm device for thermal runaway of a new energy battery in a battery pack. Background Art

[0002] The main cause of spontaneous combustion of electric vehicles is thermal runaway of the battery pack. In related technologies, the safety of the battery pack is mainly determined by detecting the battery pack voltage, temperature and smoke concentration. When the battery pack is thermally runaway, the sensing device inside the battery pack senses the thermal runaway and transmits the signal to the terminal inside the vehicle. In order to increase the escape time of people inside the electric vehicle after the battery thermal runaway, most of them will be equipped with coolant pipes on the outer ring of the battery to lower the temperature of the battery. At the same time, the battery pack will continue to spray flame-retardant gas at high pressure to slow down the speed of battery fire.

[0003] Most battery packs contain multiple battery packs. When thermal runaway occurs inside a battery pack, thermal runaway usually occurs in a single or multiple battery packs. Because the remaining battery packs are mostly in normal condition, if thermal runaway occurs in one of the battery packs and damages the isolation materials between each battery pack, the high temperature or internal combustion of the thermal runaway battery pack will have a great impact on the adjacent battery packs, causing thermal runaway of multiple battery packs in the battery pack at the same time, which will increase the speed of fire or explosion of the battery pack and shorten the escape time of people inside the electric vehicle. Summary of the invention

[0004] The purpose of the present invention is to provide an auxiliary monitoring device and an alarm device for thermal runaway of a new energy battery in a battery pack, so as to solve the related problems raised in the above background technology.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: an auxiliary monitoring device and an alarm device for thermal runaway of a new energy battery in a battery pack, comprising a main body and a battery pack slot, wherein the battery pack slot is provided at the top of the main body, and an engaging slot is provided inside the battery pack slot, and further comprising:

[0006] An isolation jet mechanism is arranged inside the fitting groove, and the isolation jet mechanism includes a transmission air pipe rack, which is fitted inside the fitting groove, and two groups of connecting air pipe columns 1 are plugged into the top of the transmission air pipe rack, and a gas dispersion box 1 is fixedly connected to the top of the two groups of connecting air pipe columns 1, and a group of connecting air pipe columns 2 is plugged into a place between the two groups of connecting air pipe columns 1 at the top of the transmission air pipe rack, and two two-way isolation air ports are provided on the left and right outer walls of the connecting air pipe column 2, and two unidirectional isolation air ports are provided on the side of the connecting air pipe column 1 close to the connecting air pipe column 2, and the unidirectional isolation air ports are arranged correspondingly to the two-way isolation air ports.

[0007] Preferably, a functional element slot is opened on the top of the main body, an isolation strip is fixedly connected between the functional element slot and the battery pack slot, a plurality of battery slots are opened on the inner wall at the bottom of the battery pack slot, a single battery pack is inserted inside the battery slot inside the battery pack slot, and every two single battery packs are separated by a transmission air pipe rack, a plurality of air intake connecting pipes are fixedly connected to the bottom of the transmission air pipe rack, and the air intake connecting pipes pass through the battery pack slot, and the air intake connecting pipes are externally connected to the low-temperature flame-retardant gas storage device through the transmission pipe.

[0008] Preferably, a closing mechanism is provided on the top of the main body, and the closing mechanism includes a cover body, which is threadedly connected to the top of the main body by bolts, and a movable extension cover is fixedly connected to the top of the cover body. A flange hole is opened at a position on the top of the cover body corresponding to the functional element slot, and the movable extension cover is arranged corresponding to the center of the battery pack slot.

[0009] Preferably, the isolation jet mechanism also includes multiple unidirectional jet ports, which are all opened on one side of the gas dispersion box 1 close to the connecting air pipe column 2, and each group of connecting air pipe columns 1 is provided with multiple unidirectional jet ports, and each connecting air pipe column 1 and each connecting air pipe column 2 are distributed on both sides of the single battery group.

[0010] Preferably, a group of connecting air pipe columns is fixedly connected to the top of a gas dispersion box 2, a plurality of reverse thrust air ports are opened on the left and right sides of the gas dispersion box 2, a plurality of through holes are opened on the left and right sides of the gas dispersion box 2, every two reverse thrust air ports on the left and right sides are cross-arranged, and each reverse thrust air port is arranged next to the through hole, a discharge pipe is fixedly connected to the top of the gas dispersion box 2, an end of the discharge pipe away from the functional element groove passes through to the outside of the cover body, and a plurality of discharge inlets are opened on the outer wall of the discharge pipe.

[0011] Preferably, a pushing mechanism is provided on the outer wall of the single battery group, and the pushing mechanism includes a plurality of fastening frames, and the plurality of fastening frames are respectively sleeved on the outer walls of the plurality of single battery groups, the left and right sides of the transmission air pipe frame are elastic, and the left and right sides of the transmission air pipe frame are respectively against the left and right sides of the single battery group, and two slides are fixedly connected to the top of the fastening frame, and the outer walls of the two slides are both slidably connected to a sliding rotating frame, and the outer wall of the sliding rotating frame is fixedly connected to an air pushing box, and the air pushing box is arranged corresponding to every two unidirectional air jets.

[0012] Preferably, the tops of the two sliding turrets are rotatably connected to two lifting bars, two sliding rods are fixedly connected to one side of the air push box close to the discharge pipe, the two sliding rods are slidably connected to the inside of the through hole, and the sliding rods slide through the gas dispersion box 2, and the two sliding rods are fixedly connected to a reverse air push plate on the side away from the air push box, and the side of the reverse air push plate close to the air push box is arranged corresponding to one of the reverse thrust air ports, and the tops of multiple reverse air push plates on the left and right sides of the gas dispersion box 2 are fixedly connected to combination bars, and the sides of the two combination bars away from each other are fixedly connected to connecting hole bars, and two return springs are fixedly connected between the side of the sliding turret close to the gas dispersion box 2 and the inner wall of the side of the slide close to the gas dispersion box 2.

[0013] Preferably, an exhaust mechanism is provided inside the discharge pipe, and the exhaust mechanism includes a plurality of closed plugging frames, which are respectively inserted into the plurality of discharge inlets, and a corresponding groove is provided at the bottom of the closed plugging frame, and a push-pull rod is slidably connected inside the corresponding groove, and the push-pull rod is provided inside the discharge pipe, and a plug is fixedly connected to the side of the push-pull rod away from the functional element groove, and the plug is sleeved on the outer wall of one end of the discharge pipe away from the functional element groove, and a wind whistle is fixedly connected to the end of the discharge pipe away from the functional element groove, and the ends of the two connecting rotating hole bars away from the combination bar are rotatably connected to pull rods, and an extrusion spring is fixedly connected between the end of the push-pull rod away from the plug and the closed plug frame.

[0014] Compared with the prior art, the present invention provides an auxiliary monitoring device and an alarm device for thermal runaway of new energy batteries in a battery pack, which has the following beneficial effects:

[0015] 1. In the present invention, when a single battery pack experiences thermal runaway, the low-temperature flame-retardant gas storage device outside the battery pack will automatically open, and the low-temperature flame-retardant gas will be transmitted to the inside of the transmission gas pipe rack through the connection of the two ends of the low-temperature flame-retardant gas transmission pipe to the air inlet joint and the low-temperature flame-retardant gas storage device at the bottom of the transmission gas pipe rack. The gas will continue to be transmitted to the inside of two groups of connecting gas pipe columns one and one group of connecting gas pipe columns two, so that the gas enters two gas dispersion boxes one and one gas dispersion box two. When the gas has a certain air pressure in the gas dispersion box two, the two groups of connecting gas pipe columns one and the two gas dispersion boxes one, the gas pressure ejected from the one-way isolation gas port and the connecting gas pipe column two will also increase, so that the two groups of one-way isolation gas ports will respectively spray from both sides in the direction of the connecting gas pipe column two, and at the same time, the two two-way isolation gas ports on the connecting gas pipe column two will also spray to the two groups of connecting gas pipe columns one. Spraying gas in the direction of gas pipe column one can not only fill the low-temperature flame-retardant gas into the interior of the battery pack and increase the time it takes for the battery pack to start burning, but also form a high-pressure, low-temperature gas wall between every two single battery packs through the one-way isolation gas port and the connecting gas pipe column two. The temperature diffused outward from the thermal runaway battery pack can be quickly taken away by the characteristics of the low-temperature flame-retardant gas and its rapid fluidity, thereby increasing the isolation effect between every two single battery packs and preventing the high-temperature or thermal runaway single battery pack from quickly affecting the adjacent single battery pack that has not experienced thermal runaway due to internal combustion due to high temperature, thereby greatly prolonging the time it takes for the thermal runaway single battery pack to affect other battery packs, thereby prolonging the speed of the battery pack catching fire or exploding, and prolonging the escape time of people inside the electric vehicle.

[0016] 2. The present invention brings the transmission air pipe rack close to the functional component slot and cooperates with the isolation strip to prolong the time for the temperature to spread to the inside of the functional component slot when the battery is thermally runaway, and prolongs the time for controlling the electronic components inside the battery pack through the interior of the car. When the high-pressure, low-temperature, flame-retardant gas inside the gas dispersion box 2 is ejected through the reverse thrust air ports on both sides, the gas will be ejected onto the reverse gas push plate, thereby driving the slide bar to slide through the gas dispersion box 2 in the through hole on the other side, thereby pulling the gas push box to move in the direction of the gas dispersion box 2 by connecting the air pipe column 2, thereby improving the speed of the gas push box movement, making it convenient to push the closed blocking frame to the inside of the movable extension cover through the two lifting strips to open the discharge inlet, and through each two reverse thrust air ports and the through hole The perforations are staggered on both sides of the connecting air pipe columns, which can drive the two sets of reverse air push plates and the sliding rod to move relative to each other at the same time, thereby driving the two air push boxes to move relative to each other, so that the combination bars on the top of the two sets of reverse air push plates move relatively outward, the two combination bars move away from each other, and respectively drive the two connecting hole-turning bars to move away from each other synchronously, so that the two pull rods rotate at the end of the connecting hole-turning bar away from the combination bar, so that the opening and closing angle between the two pull rods gradually increases, and the end of the pull rod away from the closed plug frame gradually approaches the closed plug frame, and the extrusion spring is squeezed, thereby pushing the push-pull rod to slide inside the transmission air pipe frame, pushing the plug out of the discharge pipe, thereby opening the outlet of the discharge pipe, allowing the gas to be discharged from the discharge pipe, thereby improving the practicability of the device.

[0017] 3. The gas inside the gas dispersion box 2 and the two gas dispersion boxes 1 of the present invention will also be ejected from the reverse thrust air ports on both sides of the gas dispersion box 2 and the one-way jet ports on one side of the gas dispersion box 1, thereby increasing the speed at which the gas diffuses into the battery pack. At the same time, the one-way jet ports on the two groups of gas dispersion boxes 1 will spray the gas into the two gas push boxes of each group, respectively, so that the two gas push boxes slide relatively on the two slides through the two sliding racks, respectively, so that the two sliding racks approach each other, thereby increasing the opening and closing angle between the lifting bar and the sliding rack, and the lifting bar is lifted away from the height of one end of the sliding rack, thereby driving the closed blocking frame to rise, so that the closed blocking frame is separated from the inside of the discharge inlet, so that the battery pack can be filled with gas. After absorbing heat, the low-temperature flame-retardant gas enters the exhaust pipe through the exhaust inlet. After the plug is removed from the exhaust pipe, the exhaust pipe outlet is opened to discharge the gas to the outside. In addition, a wind whistle is arranged at one end of the exhaust pipe close to the plug. When the gas flows out through the exhaust pipe, a whistle sounds, thereby serving as an alarm to remind nearby personnel. By continuously spraying the low-temperature flame-retardant gas onto the inner wall of the battery pack, the effect of cooling the single battery pack that has thermal runaway can be improved. The gas inside the battery pack flows quickly in the exhaust pipe, so that external air will not enter the battery pack, thereby avoiding excessive oxygen inside the battery pack and increasing the speed of fire, thereby improving safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a front view of the present invention;

[0019] Figure 2 It is a partial cross-sectional view of the present invention;

[0020] Figure 3 It is a schematic diagram of the main structure of the present invention;

[0021] Figure 4 This is a schematic diagram of the structure of the isolated jet injection mechanism of the present invention;

[0022] Figure 5 This is a schematic diagram of the structure of the driving mechanism of the present invention;

[0023] Figure 6 This is a schematic diagram of the structure of the return spring of the present invention;

[0024] Figure 7 It is a schematic diagram of the exhaust mechanism structure of the present invention;

[0025] Figure 8 for Figure 4 Enlarged view of point A in the middle.

[0026] In the figure: 1. main body; 101. functional element slot; 102. isolation strip; 103. battery pack slot; 104. fitting slot; 105. single battery pack; 2. closing mechanism; 201. cover; 202. movable extension cover; 203. flange hole; 3. isolation jet mechanism; 301. transmission air pipe rack; 302. connecting air pipe column 1; 303. gas dispersion box 1; 304. one-way jet port; 305. one-way isolation air port; 306. connecting air pipe column 2; 307. two-way isolation air port; 308. gas dispersion box 2; 3 09, reverse thrust air port; 310, discharge pipe; 311, discharge inlet; 312, through hole; 4, pushing mechanism; 401, fastening frame; 402, sliding frame; 403, sliding rotating frame; 404, air pushing box; 405, lifting bar; 406, sliding rod; 407, reverse air pushing plate; 408, combination bar; 409, connecting rotating hole bar; 410, reset spring; 5, exhaust mechanism; 501, closed blocking frame; 502, corresponding groove; 503, push-pull rod; 504, plug; 505, pull bar; 506, extrusion spring. DETAILED DESCRIPTION

[0027] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0028] Example 1

[0029] like Figure 1-Figure 8 As shown, the main body 1 and the battery pack slot 103, the battery pack slot 103 is opened on the top of the main body 1, and the battery pack slot 103 is provided with an engaging slot 104, and further includes:

[0030] The isolation jet mechanism 3 is arranged inside the fitting groove 104, and the isolation jet mechanism 3 includes a transmission air pipe rack 301, and the transmission air pipe rack 301 is fitted inside the fitting groove 104. Two groups of connecting air pipe columns 1 302 are plugged into the top of the transmission air pipe rack 301, and the tops of the two groups of connecting air pipe columns 1 302 are fixedly connected with a gas dispersion box 1 303. A group of connecting air pipe columns 2 306 is plugged into a place between the two groups of connecting air pipe columns 1 302 at the top of the transmission air pipe rack 301. Two two-way isolation air ports 307 are provided on the left and right outer walls of the connecting air pipe column 2 306, and two unidirectional isolation air ports 305 are provided on the side of the connecting air pipe column 1 302 close to the connecting air pipe column 2 306. The unidirectional isolation air ports 305 and the two-way isolation air ports 306 are connected to each other. The air inlet 307 is arranged in a corresponding manner, and the isolation jet mechanism 3 also includes a plurality of one-way jet ports 304, and the plurality of one-way jet ports 304 are all arranged on one side of the gas dispersion box 1 303 close to the connecting air pipe column 2 306, and each group of connecting air pipe columns 1 302 is provided with a plurality of them, and each connecting air pipe column 1 302 and each connecting air pipe column 2 306 are distributed on both sides of the single battery group 105, and a group of connecting air pipe columns 2 306 are fixedly connected with a gas dispersion box 2 308 on the top, and the gas dispersion box 2 308 is provided with a plurality of reverse thrust air ports 309 on the left and right sides, and the gas dispersion box 2 308 is provided with a plurality of through holes 312 on the left and right sides, and each two reverse thrust air ports 309 on the left and right sides are arranged crosswise, and each reverse thrust air port 309 is arranged on the through hole Next to 312, a discharge pipe 310 is fixedly connected to the top of the gas dispersion box 2 308, and the end of the discharge pipe 310 away from the functional element slot 101 passes through the outside of the cover body 201, and a plurality of discharge inlets 311 are provided on the outer wall of the discharge pipe 310. The low-temperature flame-retardant gas is transmitted to the transmission gas pipe rack 301 through the connection of the two ends of the low-temperature flame-retardant gas transmission pipe with the air inlet joint and the low-temperature flame-retardant gas storage device at the bottom of the transmission gas pipe rack 301, and the gas will be continuously transmitted to the interior of two groups of connecting gas pipe columns 1 302 and one group of connecting gas pipe columns 2 306, so that the gas enters two gas dispersion boxes 1 303 and one gas dispersion box 2 308. When the gas is in the gas dispersion box 2 308, the two groups of connecting gas pipe columns 1 302 and the two After a certain gas pressure is formed inside the gas dispersion box 1 303, the gas pressure ejected from the one-way isolation gas port 305 and the connecting gas pipe column 2 306 will also increase, so that the two groups of one-way isolation gas ports 305 will respectively eject gas from both sides in the direction of the connecting gas pipe column 2 306, and at the same time, the two two-way isolation gas ports 307 on the connecting gas pipe column 2 306 will also eject gas in the direction of the two groups of connecting gas pipe columns 1 302, and the high-pressure, low-temperature, flame-resistant gas ejected between every two single battery groups 105 through the one-way isolation gas port 305 and the connecting gas pipe column 2 306 will form a high-pressure, low-temperature gas wall between every two single battery groups 105, and the temperature diffused outward from the battery group with thermal runaway can be quickly taken away by the characteristics of the low-temperature flame-resistant gas and its rapid fluidity;

[0031] A functional element slot 101 is provided at the top of the main body 1, and an isolation strip 102 is fixedly connected between the functional element slot 101 and the battery pack slot 103. A plurality of battery slots are provided on the inner wall at the bottom of the battery pack slot 103, and a single battery pack 105 is inserted into the battery slot inside the battery pack slot 103. Every two single battery packs 105 are separated by a transmission air pipe rack 301, and a plurality of air intake connecting pipes are fixedly connected at the bottom of the transmission air pipe rack 301, and the air intake connecting pipes penetrate the battery pack slot 103, and the air intake connecting pipes are externally connected to a low-temperature flame-retardant gas storage device through the transmission pipe;

[0032] A closing mechanism 2 is provided on the top of the main body 1. The closing mechanism 2 includes a cover 201. The cover 201 is threadedly connected to the top of the main body 1 by bolts. A movable extension cover 202 is fixedly connected to the top of the cover 201. A flange hole 203 is provided at a location on the top of the cover 201 corresponding to the functional element slot 101. The movable extension cover 202 is provided corresponding to the center of the battery pack slot 103.

[0033] The outer wall of the single battery pack 105 is provided with a pushing mechanism 4, which includes a plurality of fastening frames 401, and the plurality of fastening frames 401 are respectively sleeved on the outer walls of the plurality of single battery packs 105. The left and right sides of the transmission air pipe frame 301 are elastic, and the left and right sides of the transmission air pipe frame 301 are respectively against the left and right sides of the single battery pack 105. The top of the fastening frame 401 is fixedly connected with two slides 402, and the outer walls of the two slides 402 are slidably connected with a sliding rotating frame 403, and the outer wall of the sliding rotating frame 403 is fixedly connected with an air push box 404, and the air push box 404 is arranged corresponding to each two one-way air jets 304, and the tops of the two sliding rotating frames 403 are respectively rotatably connected with Two lifting bars 405, two sliding bars 406 are fixedly connected to one side of the air push box 404 close to the discharge pipe 310, the two sliding bars 406 are slidably connected to the inside of the through hole 312, and the sliding bars 406 slide through the gas dispersion box 2 308, the two sliding bars 406 are fixedly connected to the side away from the air push box 404 with a reverse air push plate 407, the reverse air push plate 407 is arranged on the side close to the air push box 404 corresponding to one of the reverse thrust air ports 309, the tops of the multiple reverse air push plates 407 on the left and right sides of the gas dispersion box 2 308 are fixedly connected with a combination bar 408, and the two combination bars 408 are fixedly connected to the connecting hole transfer bar 409 on the side away from each other, Two return springs 410 are fixedly connected between the side of the sliding rotating frame 403 close to the gas dispersion box 2 308 and the inner wall of the side of the sliding frame 402 close to the gas dispersion box 2 308. When the high-pressure, low-temperature, flame-retardant gas inside the gas dispersion box 2 308 is ejected through the reverse thrust ports 309 on both sides, the gas will be ejected onto the reverse gas thrust plate 407, thereby driving the slide bar 406 to slide through the gas dispersion box 2 308 in the through hole 312 on the other side, thereby pulling the gas push box 404 to move in the direction of the gas dispersion box 2 308 through the connection gas pipe column 2 306, thereby increasing the speed of the gas push box 404, making it easier to close the closed block through the two lifting bars 405. The frame 501 is pushed to the inside of the movable extension cover 202 to open the discharge inlet 311. Through the staggered arrangement of each two reverse thrust air ports 309 and the through holes 312 on both sides of the connecting air pipe column 306, the two sets of reverse air push plates 407 and the slide rod 406 can be driven to move relative to each other at the same time, thereby driving the two air push boxes 404 to move relative to each other, so that the combination strips 408 on the top of the two sets of reverse air push plates 407 move relatively outward, so that the two combination strips 408 move away from each other, and respectively drive the two connecting hole-turning strips 409 to move away from each other synchronously, so that the two pull strips 505 rotate at one end of the connecting hole-turning strip 409 away from the combination strip 408, so that the opening and closing angle between the two pull strips 505 gradually increases;

[0034] The exhaust mechanism 5 is arranged inside the discharge pipe 310, and the exhaust mechanism 5 includes a plurality of closed plugging frames 501, and the plurality of closed plugging frames 501 are respectively inserted into the plurality of discharge inlets 311, and a corresponding groove 502 is provided at the bottom of the closed plugging frame 501, and a push-pull rod 503 is slidably connected inside the corresponding groove 502, and the push-pull rod 503 is arranged inside the discharge pipe 310, and a plug 504 is fixedly connected to the side of the push-pull rod 503 away from the functional element groove 101, and the plug 504 is sleeved on the outer wall of one end of the discharge pipe 310 away from the functional element groove 101, and the discharge pipe The end of the channel 310 away from the functional element slot 101 is fixedly connected with a wind whistle, and the ends of the two connecting rotating hole strips 409 away from the combination strip 408 are rotatably connected with the pull rod 505, and the end of the push-pull rod 503 away from the plug 504 is fixedly connected with the closed plug frame 501. The opening and closing angle between the two pull rods 505 gradually increases, so that the end of the pull rod 505 away from the closed plug frame 501 gradually approaches the closed plug frame 501, and squeezes the squeezing spring 506, thereby pushing the push-pull rod 503 to slide inside the transmission air pipe frame 301 The plug 504 is pushed out of the discharge pipe 310, thereby opening the outlet of the discharge pipe 310 to allow the gas to be discharged from the discharge pipe 310. The one-way jet ports 304 on the two groups of gas dispersion boxes 303 will respectively spray gas into the two gas push boxes 404 of each group, so that the two gas push boxes 404 slide relatively on the two slide racks 402 through the two sliding racks 403, respectively, so that the two sliding racks 403 approach each other, thereby increasing the opening and closing angle between the lifting bar 405 and the sliding rack 403, and the lifting bar 405 moves away from the sliding rack 403. The height of the end is raised, thereby driving the closed plug frame 501 to rise, so that the closed plug frame 501 is separated from the inside of the discharge inlet 311, so that the low-temperature flame-retardant gas after absorbing heat inside the battery pack can enter the inside of the discharge pipe 310 through the discharge inlet 311, and after the plug 504 is moved out of the discharge pipe 310, the outlet of the discharge pipe 310 is opened to discharge the gas to the outside, and a wind whistle is arranged at one end of the discharge pipe 310 close to the plug 504, when the gas flows out through the discharge pipe 310, there will be a whistle, which serves as an alarm.

[0035] Working principle: When a single battery pack 105 experiences thermal runaway, the low-temperature flame-retardant gas storage device outside the battery pack will automatically open, and the low-temperature flame-retardant gas will be transmitted to the inside of the transmission gas pipe rack 301 through the connection of the two ends of the low-temperature flame-retardant gas transmission pipe to the air inlet joint and the low-temperature flame-retardant gas storage device at the bottom of the transmission gas pipe rack 301. The gas will continue to be transmitted to the inside of two sets of connecting gas pipe columns 1 302 and one set of connecting gas pipe columns 2 306, so that the gas enters two gas dispersion boxes 1 303 and one gas dispersion box 2 308. When the gas has a certain air pressure inside the gas dispersion box 2 308, the two sets of connecting gas pipe columns 1 302 and the two gas dispersion boxes 1 303, the gas pressure ejected from the one-way isolation gas port 305 and the connecting gas pipe column 2 306 is reduced. It will also become larger, so that the two groups of one-way isolation gas ports 305 will spray from both sides in the direction of the connecting gas pipe column 306, and at the same time, the two two-way isolation gas ports 307 on the connecting gas pipe column 306 will also spray gas in the direction of the two groups of connecting gas pipe columns 1 302, which can not only fill the low-temperature flame-retardant gas into the interior of the battery pack and increase the time for the battery pack to start burning, but also the high-pressure low-temperature flame-retardant gas sprayed between every two single battery groups 105 through the one-way isolation gas port 305 and the connecting gas pipe column 306 will form a high-pressure low-temperature gas wall between every two single battery groups 105. Through the characteristics of the low-temperature flame-retardant gas and its rapid fluidity, it can quickly take away the temperature diffused outward from the thermal runaway battery group, thereby increasing the isolation effect between every two single battery groups 105.

[0036] Example 2

[0037] like Figure 1-Figure 8As shown, the working principle is: by transferring the air pipe rack 301 close to the functional element slot 101 and cooperating with the isolation strip 102, the time for the temperature to spread to the inside of the functional element slot 101 is prolonged when the battery is thermally runaway, and the time for controlling the electronic components inside the battery pack through the interior of the car is prolonged. When the high-pressure, low-temperature, flame-retardant gas inside the gas dispersion box 308 is ejected through the reverse thrust air ports 309 on both sides, the gas will be ejected onto the reverse gas push plate 407, thereby driving the slide bar 406 to slide through the gas dispersion box 308 inside the through hole 312 on the other side, thereby pulling the gas push box 404 to move in the direction of the gas dispersion box 308 by connecting the air pipe column 2 306, thereby increasing the speed of the gas push box 404, and facilitating the closing frame 501 to be pushed to the inside of the movable extension cover 202 through the two lifting strips 405 to open the discharge inlet 311, and through each two reverse thrust air ports 309 and The through holes 312 are staggered on both sides of the connecting air pipe column 306, which can simultaneously drive the two sets of reverse air push plates 407 and the sliding rod 406 to move relative to each other, thereby driving the two air push boxes 404 to move relative to each other, so that the combination strips 408 on the top of the two sets of reverse air push plates 407 move relatively outward, so that the two combination strips 408 move away from each other, and respectively drive the two connecting hole-turning strips 409 to move away from each other synchronously, so that the two pull strips 505 rotate at one end of the connecting hole-turning strip 409 away from the combination strip 408, so that the opening and closing angle between the two pull strips 505 gradually increases, and the end of the pull strip 505 away from the closed plug frame 501 gradually approaches the closed plug frame 501, and squeezes the extrusion spring 506, so as to push the push-pull rod 503 to slide inside the transmission air pipe frame 301, and push the plug 504 out of the discharge pipe 310, so that the outlet of the discharge pipe 310 is opened, and the gas is discharged from the discharge pipe 310;

[0038] The gas inside the gas dispersion box 2 308 and the two gas dispersion boxes 1 303 will also be ejected from the reverse thrust ports 309 on both sides of the gas dispersion box 2 308 and the one-way jet ports 304 on one side of the gas dispersion box 1 303, respectively, thereby increasing the speed at which the gas diffuses into the battery pack. At the same time, the one-way jet ports 304 on the two groups of gas dispersion boxes 1 303 will respectively spray the gas into the two gas push boxes 404 of each group, so that the two gas push boxes 404 slide relatively on the two slide racks 402 through the two sliding rotating racks 403, respectively, so that the two sliding rotating racks 403 approach each other, thereby increasing the opening and closing angle between the lifting bar 405 and the sliding rotating rack 403, and raising the height of the lifting bar 405 away from one end of the sliding rotating rack 403. The plug 504 is moved out of the discharge pipe 310, and the outlet of the discharge pipe 310 is opened to discharge the gas to the outside. In addition, a whistle is arranged at one end of the discharge pipe 310 near the plug 504. When the gas flows out through the discharge pipe 310, a whistle is sounded, thereby serving as an alarm. In addition, the gas inside the battery pack flows quickly inside the discharge pipe 310, and external air will not enter the battery pack, thereby preventing excessive oxygen inside the battery pack from increasing the speed of fire.

[0039] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0040] The electrical components mentioned in this article are all connected to an external main controller and 220V mains electricity, and the main controller can be a conventional known device for controlling a computer or the like.

[0041] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An auxiliary monitoring device and alarm device for thermal runaway of a new energy battery in a battery pack, comprising a main body (1) and a battery pack slot (103), wherein the battery pack slot (103) is provided at the top of the main body (1), and an engaging slot (104) is provided inside the battery pack slot (103), characterized in that: Also includes: An isolation jet mechanism (3), the isolation jet mechanism (3) being arranged inside the fitting groove (104), the isolation jet mechanism (3) comprising a transmission air pipe rack (301), the transmission air pipe rack (301) being fitted inside the fitting groove (104), two groups of connecting air pipe columns (302) being plugged into the top of the transmission air pipe rack (301), the tops of the two groups of connecting air pipe columns (302) being fixedly connected to a gas dispersion box (303), the transmission air pipe rack ( A second connecting air pipe column (306) is inserted at a point between the two connecting air pipe columns (302) at the top of the air pipe column (301), and two bidirectional isolation air ports (307) are provided on the left and right outer walls of the second connecting air pipe column (306), and two unidirectional isolation air ports (305) are provided on the side of the connecting air pipe column (302) close to the second connecting air pipe column (306), and the unidirectional isolation air ports (305) are arranged in correspondence with the bidirectional isolation air ports (307); The main body (1) is provided with a functional element slot (101) at the top, an isolation strip (102) is fixedly connected between the functional element slot (101) and the battery pack slot (103), a plurality of battery slots are provided on the inner wall at the bottom of the battery pack slot (103), a single battery pack (105) is inserted into the battery slot inside the battery pack slot (103), every two single battery packs (105) are separated by a transmission gas pipe rack (301), a plurality of air intake connecting pipes are fixedly connected to the bottom of the transmission gas pipe rack (301), and the air intake connecting pipes pass through the battery pack slot (103), and the air intake connecting pipes are externally connected to a low-temperature flame-retardant gas storage device through the transmission pipes; A second gas dispersion box (308) is fixedly connected to the top of a group of connecting air pipe columns (306). A plurality of reverse thrust air ports (309) are provided on the left and right sides of the second gas dispersion box (308). A plurality of through holes (312) are provided on the left and right sides of the second gas dispersion box (308). Every two reverse thrust air ports (309) on the left and right sides are cross-arranged, and each reverse thrust air port (309) is arranged next to the through hole (312). A discharge pipe (310) is fixedly connected to the top of the second gas dispersion box (308). An end of the discharge pipe (310) away from the functional element slot (101) passes through the outside of the cover body (201), and a plurality of discharge inlets (311) are provided on the outer wall of the discharge pipe (310).

2. The auxiliary monitoring device and alarm device for thermal runaway of new energy batteries in a battery pack according to claim 1, characterized in that: A closing mechanism (2) is arranged on the top of the main body (1), the closing mechanism (2) comprising a cover body (201), the cover body (201) being threadedly connected to the top of the main body (1) by means of bolts, a movable extension cover (202) being fixedly connected to the top of the cover body (201), a flange hole (203) being provided at a location on the top of the cover body (201) corresponding to the functional element slot (101), and the movable extension cover (202) being arranged corresponding to the center of the battery pack slot (103).

3. The auxiliary monitoring device and alarm device for thermal runaway of new energy batteries in a battery pack according to claim 2, characterized in that: The isolation jet mechanism (3) further comprises a plurality of one-way jet ports (304), wherein the plurality of one-way jet ports (304) are all disposed on one side of the gas dispersion box (303) close to the connecting air pipe column (306), and each group of the connecting air pipe column (302) is provided with a plurality of one-way jet ports, and each connecting air pipe column (302) and each connecting air pipe column (306) are distributed on both sides of the single battery group (105).

4. The auxiliary monitoring device and alarm device for thermal runaway of new energy batteries in a battery pack according to claim 3, characterized in that: The outer wall of the single battery group (105) is provided with a pushing mechanism (4), the pushing mechanism (4) comprises a plurality of fastening frames (401), the plurality of fastening frames (401) are respectively sleeved on the outer walls of the plurality of single battery groups (105), the left side and the right side of the transmission air pipe frame (301) are elastic, and the left side and the right side of the transmission air pipe frame (301) are respectively against the left side and the right side of the single battery group (105), the top of the fastening frame (401) is fixedly connected to two slide frames (402), the outer walls of the two slide frames (402) are both slidably connected to a sliding rotating frame (403), the outer wall of the sliding rotating frame (403) is fixedly connected to an air pushing box (404), and the air pushing box (404) is arranged corresponding to each two one-way air jet ports (304).

5. The auxiliary monitoring device and alarm device for thermal runaway of new energy batteries in a battery pack according to claim 4, characterized in that: The tops of the two sliding rotating racks (403) are rotatably connected to two lifting bars (405), and the side of the air push box (404) close to the discharge pipe (310) is fixedly connected to two sliding rods (406). The two sliding rods (406) are slidably connected to the inside of the through hole (312), and the sliding rods (406) slide through the gas dispersion box 2 (308). The side of the two sliding rods (406) away from the air push box (404) is fixedly connected to a reverse air push plate (407), and the reverse air push plate (407) is close to the air push box ( The gas dispersion box (308) is provided with a plurality of reverse air thrust plates (407) on the left and right sides thereof, and the tops thereof are fixedly connected with a combination bar (408). The two combination bars (408) are fixedly connected with a connecting hole bar (409) on the sides away from each other. Two return springs (410) are fixedly connected between a side of the sliding rotating frame (403) close to the gas dispersion box (308) and an inner wall of a side of the sliding frame (402) close to the gas dispersion box (308).

6. The auxiliary monitoring equipment and alarm device for thermal runaway of new energy batteries in a battery pack according to claim 5, characterized in that: An exhaust mechanism (5) is arranged inside the exhaust pipe (310), and the exhaust mechanism (5) comprises a plurality of closed blocking frames (501), and the plurality of closed blocking frames (501) are respectively plugged into the plurality of exhaust inlets (311), and a corresponding groove (502) is provided at the bottom of the closed blocking frame (501), and a push-pull rod (503) is slidably connected inside the corresponding groove (502), and the push-pull rod (503) is arranged inside the exhaust pipe (310), and the push-pull rod (503) is away from the functional element groove (101). A plug (504) is fixedly connected to one side, and the plug (504) is sleeved on the outer wall of one end of the discharge pipe (310) away from the functional element groove (101); a wind whistle is fixedly connected to one end of the discharge pipe (310) away from the functional element groove (101); one end of the two connecting hole-turning strips (409) away from the combination strip (408) is rotatably connected to a pull strip (505); and an extrusion spring (506) is fixedly connected between the end of the push-pull rod (503) away from the plug (504) and the closed plug frame (501).

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