Fireproof and explosion-proof liquid cooling device for new energy automobile battery

Abstract

The invention discloses a fire-proof and explosion-proof liquid cooling device for a new energy automobile battery, and provides the following scheme that the fire-proof and explosion-proof liquid cooling device comprises a new energy automobile battery protection mechanism and a fire extinguishing and falling-off mechanism, and the fire extinguishing and falling-off mechanism is assembled above the new energy automobile battery protection mechanism; by arranging the flammable film, the fire extinguishing ball and the exhaust whistle, under the condition that the new energy automobile battery main body is burnt, the flammable film can be easily burnt through and damaged, so that the fire extinguishing ball can fall off to the position of the new energy automobile battery main body, and the fire extinguishing ball sprays dry powder when encountering open fire to achieve a fire extinguishing effect; secondly, after the flammable membrane is damaged, fixing of the movable piston is removed, the movable piston can be jacked upwards under the influence of hot air pressure generated by combustion, the movable piston is made to move upwards to the position above the exhaust whistle, at the moment, exhaust and pressure relief can be conducted through the exhaust whistle, and the risk of air pressure explosion is reduced; and the exhaust whistle can make a sound to effectively remind people.

Description

Technical Field

[0001] The present invention relates to the technical field of new energy vehicle battery main body cooling, and in particular to a new energy vehicle battery fireproof and explosion-proof liquid cooling device. Background Art

[0002] As one of the core components of new energy vehicles, the main battery pack of new energy vehicles is responsible for providing power for new energy vehicles. The quality of the battery pack directly affects the safety and service life of the vehicle. During the charging and discharging process, the main battery pack of new energy vehicles will generate a lot of heat due to the violent chemical reaction inside it, which will cause the temperature of the main battery pack of new energy vehicles and the surrounding environment of the main battery pack of new energy vehicles to change dramatically.

[0003] At present, the existing technology often uses liquid cooling to achieve heat dissipation of the new energy vehicle battery body. However, when the temperature inside the new energy vehicle battery body suddenly becomes too high, fire or explosion may easily occur. Moreover, since there is a certain amount of cooling water inside the liquid cooling device, after the high temperature is generated, the cooling water enclosed in the space evaporates due to heat and can easily cause a water vapor explosion, which poses a great safety hazard. Moreover, after the new energy vehicle battery body spontaneously ignites, it is easy to transmit the fire to other combustible parts of the vehicle, causing greater losses.

[0004] In view of the above problems, the present invention document proposes a fireproof and explosion-proof liquid cooling device for new energy vehicle batteries. Summary of the invention

[0005] The purpose of the present invention is to solve the problem that in the prior art, the heat dissipation of the new energy vehicle battery body is often achieved by liquid cooling. However, when the temperature inside the new energy vehicle battery body is suddenly too high, fire or explosion may occur easily. Moreover, since there is a certain amount of cooling water inside the liquid cooling device, after the high temperature is generated, the cooling water enclosed in the space evaporates due to heat and is very likely to cause a water vapor explosion, which poses a great safety hazard. Moreover, after the new energy vehicle battery body spontaneously ignites, it is easy to be transmitted to other combustible parts of the vehicle, causing greater losses. Therefore, a fireproof and explosion-proof liquid cooling device for new energy vehicle batteries is proposed.

[0006] In order to achieve the above object, the present invention adopts the following technical solutions: A fireproof and explosion-proof liquid cooling device for a new energy vehicle battery, comprising a new energy vehicle battery protection mechanism and a fire extinguishing and shedding mechanism, wherein the fire extinguishing and shedding mechanism is mounted above the new energy vehicle battery protection mechanism; The new energy vehicle battery protection mechanism comprises a flame-retardant outer shell, a battery protection inner shell is arranged inside the flame-retardant outer shell, a new energy vehicle battery body is arranged in the battery protection inner shell, the new energy vehicle battery body is covered with a battery liquid cooling assembly, one end of the battery liquid cooling assembly extends downward and is connected to a water storage cavity, the water storage cavity is arranged below the battery protection inner shell, two drainage assemblies connected to the water storage cavity are installed on both sides below the battery protection inner shell, the drainage assembly is meshed with a drainage control assembly, the drainage control assembly is fixedly connected to the bottom of the battery protection inner shell, one end of the drainage control assembly is connected to a guide port, and the guide port is arranged on the inner wall of the flame-retardant outer shell; The fire extinguishing and falling-off mechanism includes two outer shells, which are installed above the battery protective inner shell. A plurality of exhaust whistles are arranged outside the battery protective inner shell. A flammable film is installed below the battery protective inner shell. A fire extinguishing ball is fixed below the flammable film. A vertical transmission component is fixedly connected above the flammable film. The vertical transmission component is meshed with a second gear. Two second gears are fixedly connected to a threaded fixing component. The threaded fixing component is rotatably connected to the two outer shells. A tooth segment is meshed in the middle of the threaded fixing component. The tooth segment is fixedly connected to a first joint. The first joint is connected to the battery body of the new energy vehicle through a cable, and the first joint is plugged into the second joint.

[0007] Preferably, a coolant refrigerator is installed inside the water storage cavity, and the bottom of the guide port is a curved surface.

[0008] Preferably, two guide bars are fixedly connected to both sides of the battery protective inner shell, and the guide bars are slidably connected in the limiting openings. The limiting openings are opened on the inner wall of the flame-retardant outer shell, and two fixing openings are provided on the top of the flame-retardant outer shell.

[0009] Preferably, the drainage control assembly includes a transmission gear rod, a slide groove is provided on the transmission gear rod, the transmission gear rod slides on the limit bar through the slide groove, the limit bar is fixedly connected to the bottom of the battery protective inner shell, one end of the limit bar is fixedly connected to a rolling pulley, and the rolling pulley cooperates with the guide port.

[0010] Preferably, the drainage assembly includes a drain pipe, which is installed on the battery protective inner shell and connected to the water storage chamber. The drain pipe is provided with an opening and closing gear valve, which is engaged with the transmission gear rod. A reset torsion spring is fixed below the opening and closing gear valve, and the bottom end of the reset torsion spring is fixedly connected to the drain pipe.

[0011] Preferably, the battery liquid cooling assembly includes a liquid cooling water pump, the water inlet of the liquid cooling water pump extends downward into the water storage chamber, the water outlet of the liquid cooling water pump is connected to the liquid cooling pipe, the liquid cooling pipe is wrapped around and covered on the new energy vehicle battery body, the liquid cooling pipe is fixedly connected to the battery protective inner shell, and one end of the liquid cooling pipe is connected to the water storage chamber.

[0012] Preferably, two support bars are fixedly connected to the top of the battery protective inner shell, and sliding openings are provided on both sides of the first connector, and the first connector slides on the support bars through the sliding openings.

[0013] Preferably, the threaded fixing assembly includes a transmission screw, the threads at both ends of the transmission screw are arranged oppositely, the two ends of the transmission screw are threadedly connected with a threaded barrel, the threaded barrel is inserted into the fixing port, and the middle part of the transmission screw is fixedly connected with a first gear, which is meshed with the tooth segment.

[0014] Preferably, a slider is fixedly connected to the bottom of the threaded cylinder, the slider is slidably connected to a guide rail, and the guide rail is fixedly connected to the top of the battery protective inner shell.

[0015] Preferably, the vertical transmission assembly includes a movable piston, the movable piston is disposed in the housing, a tooth plate is fixedly connected above the movable piston, and the tooth plate is meshed with the second gear.

[0016] Compared with the prior art, the present invention provides a fireproof and explosion-proof liquid cooling device for new energy vehicle batteries, which has the following beneficial effects: 1. The fireproof and explosion-proof liquid cooling device for the battery of the new energy vehicle is provided with a flammable film, a fire extinguishing ball and an exhaust whistle. When the main body of the battery of the new energy vehicle is burned, the flammable film can be easily burned through and destroyed due to its flammable characteristics, so that the fire extinguishing ball can fall off to the main body of the battery of the new energy vehicle, and the fire extinguishing ball sprays dry powder when encountering an open flame to extinguish the fire, weaken the fire and reduce the spread of the fire. Secondly, after the flammable film is destroyed, the fixing of the movable piston is removed, and the movable piston can be pushed up by the hot air pressure generated by the combustion, so that the movable piston moves upward to above the exhaust whistle. At this time, the exhaust pressure can be released through the exhaust whistle to reduce the risk of air pressure explosion, and the sound of the exhaust whistle can effectively remind personnel.

[0017] 2. The fireproof and explosion-proof liquid cooling device for the battery of the new energy vehicle is provided with a flammable film, a vertical transmission component, a second gear, a threaded fixing component and a tooth segment. When an open flame appears in the main body of the battery of the new energy vehicle, the flammable film is affected by the open flame and its structure is destroyed, so that the fixing of the movable piston fails. As the hot gas accumulates, the gas pressure pushes up the movable piston, so that the movable piston drives the tooth plate to move upward, so that the tooth plate drives upward with the second gear, and the second gear drives the transmission screw to rotate, and the transmission screw drives the two threaded barrels to move away from each other and disengage from the fixing port, so that the fixing of the battery protection inner shell fails, and the transmission screw drives the first gear and the tooth segment to transmit, so that the tooth segment drives the first joint and the second joint to separate, so that the battery protection inner shell can be thrown away together with the main body of the battery of the new energy vehicle, so as to avoid further expansion of the loss, and the power can be cut off for processing, so as to reduce safety hazards, and the main body of the battery of the new energy vehicle can be thrown out smoothly.

[0018] 3. The fireproof and explosion-proof liquid cooling device for the new energy vehicle battery is provided with a flammable film, a vertical transmission component, a second gear, a threaded fixing component, a tooth segment and a drainage component. The flammable film structure is destroyed by an open flame in the main body of the new energy vehicle battery, and the movable piston can be pushed up as the hot air pressure increases, so that the movable piston drives the tooth plate upward to transmit with the second gear, and the transmission screw rotates to drive the threaded barrel away from the fixed port, and the transmission screw also drives the first gear and the tooth segment to transmit, so that the tooth segment drives the first joint to separate from the second joint, so that the power can be cut off, and the battery protection inner shell slides downward to separate the rolling pulley from the guide port. At this time, the torsion of the reset torsion spring drives the opening and closing tooth valve to rotate, and the opening and closing tooth valve opens the drain pipe to discharge the coolant inside the water storage cavity, thereby avoiding the risk of water vapor explosion caused by the high temperature generated by the combustion of the main body of the new energy vehicle battery, thereby improving safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 A three-dimensional view of a fireproof and explosion-proof liquid cooling device for a new energy vehicle battery proposed by the present invention; Figure 2 A three-dimensional view of a flame-retardant shell of a fire-proof and explosion-proof liquid cooling device for a new energy vehicle battery proposed by the present invention; Figure 3 A three-dimensional cross-sectional view of a fireproof and explosion-proof liquid cooling device for a new energy vehicle battery proposed by the present invention; Figure 4 A three-dimensional view of the battery protection inner shell of a fireproof and explosion-proof liquid cooling device for a new energy vehicle battery proposed by the present invention; Figure 5 A three-dimensional cross-sectional view of a battery protection inner shell of a fireproof and explosion-proof liquid cooling device for a new energy vehicle battery proposed by the present invention; Figure 6 A cross-sectional view of a water storage chamber of a fireproof and explosion-proof liquid cooling device for a new energy vehicle battery proposed by the present invention; Figure 7 A view of the connection structure between the drainage component and the drainage control component of the present invention; Figure 8 A view of the connection structure between the threaded fixing assembly and the tooth segment of the present invention; Fig. 9 A view showing the first joint and the second joint of the present invention being separated; Fig.10 A view of the connection structure between the threaded fixing assembly and the vertical transmission assembly of the present invention; Fig.11 A three-dimensional view of a threaded fixing assembly of a fireproof and explosion-proof liquid cooling device for a new energy vehicle battery proposed by the present invention.

[0020] Fig.12 This is a three-dimensional view of the vertical transmission assembly of a fireproof and explosion-proof liquid cooling device for new energy vehicle batteries proposed by the present invention.

[0021] In the figure: 100, new energy vehicle battery protection mechanism; 101, flame retardant shell; 102, new energy vehicle battery body; 103, battery liquid cooling assembly; 1031, liquid cooling water pump; 1032, liquid cooling cooling pipe; 104, guide port; 105, water storage cavity; 106, drainage assembly; 1061, drainage pipe; 1062, reset torsion spring; 1063, opening and closing gear valve; 107, drainage control assembly; 1071, transmission gear rod; 1072, limit bar; 1073, rolling pulley; 108, coolant refrigerator; 109, battery protection inner shell; 11 0. Guide strip; 111. Limit opening; 112. Fixing opening; 200. Fire extinguishing and falling mechanism; 201. Shell; 202. Threaded fixing assembly; 2021. Drive screw; 2022. Threaded barrel; 2023. Slider; 2024. Guide rail; 2025. First gear; 203. Vertical transmission assembly; 2031. Moving piston; 2032. Tooth plate; 204. Inflammable film; 205. Fire extinguishing ball; 206. Second gear; 207. Support strip; 208. Exhaust whistle; 209. Tooth segment; 210. First joint; 211. Second joint. DETAILED DESCRIPTION

[0022] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0023] In the description of the present invention, it is necessary to understand that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0024] Example 1: Reference Figure 1-6 and Fig. 9 A new energy vehicle battery fireproof and explosion-proof liquid cooling device comprises a new energy vehicle battery protection mechanism 100 and a fire extinguishing and shedding mechanism 200, wherein the fire extinguishing and shedding mechanism 200 is assembled above the new energy vehicle battery protection mechanism 100; The new energy vehicle battery protection mechanism 100 includes a flame retardant outer shell 101, a battery protection inner shell 109 is arranged inside the flame retardant outer shell 101, a new energy vehicle battery body 102 is arranged in the battery protection inner shell 109, and the new energy vehicle battery body 102 is covered with a battery liquid cooling assembly 103, and the battery liquid cooling assembly 103 includes a liquid cooling water pump 1031, and the water inlet of the liquid cooling water pump 1031 extends downward into the water storage chamber 105, and the water storage chamber 105 can be used to store the coolant, and the water outlet of the liquid cooling water pump 1031 is connected to the liquid cooling cooling pipe 1032, and the liquid cooling cooling pipe 1032 is wound around On the new energy vehicle battery body 102, the liquid cooling pipe 1032 can increase the contact area with the new energy vehicle battery body 102, so as to keep the coolant fully flowing on the new energy vehicle battery body 102, thereby increasing the heat exchange area of ​​the new energy vehicle battery body 102 to the new energy vehicle battery body 102, and improving the heat dissipation effect of the new energy vehicle battery body 102. The liquid cooling pipe 1032 is wound and coated on the new energy vehicle battery body 102, and the liquid cooling pipe 1032 is fixedly connected to the battery protective inner shell 109, and one end of the liquid cooling pipe 1032 is connected to the water storage cavity 105 The liquid cooling water pump 1031 can play a role in drainage, so that the coolant inside the water storage chamber 105 can be extracted, and the coolant can flow into the liquid cooling pipe 1032, and the coolant can perform heat exchange operation on the surface of the new energy vehicle battery body 102 through the liquid cooling pipe 1032, thereby facilitating liquid cooling and heat dissipation of the new energy vehicle battery body 102. One end of the battery liquid cooling component 103 extends downward and is connected to the water storage chamber 105. A coolant refrigerator 108 is installed inside the water storage chamber 105. The coolant refrigerator 108 can cool the refluxed coolant to maintain a low temperature. For the heat exchange operation of the battery body 102 of the new energy vehicle, the water storage chamber 105 is opened below the battery protection inner shell 109, and two drainage components 106 connected to the water storage chamber 105 are installed on both sides of the bottom of the battery protection inner shell 109. The drainage component 106 is engaged with the drainage control component 107, and the drainage control component 107 is fixedly connected to the bottom of the battery protection inner shell 109. One end of the drainage control component 107 is set up with the guide port 104, and the guide port 104 is opened on the inner wall of the flame-retardant outer shell 101. The flame-retardant outer shell 101 is made of flame-retardant material, so as to suppress the fire and reduce the spread of the fire. The fire extinguishing and shedding mechanism 200 includes two outer shells 201, and the outer shell 201 is installed above the battery protective inner shell 109. The battery protective inner shell 109 is provided with a plurality of exhaust whistles 208. The exhaust whistle 208 can not only play the role of exhaust and pressure relief, but also the exhaust process of the exhaust whistle 208 can make a sound, thereby reminding people to stay away. A flammable film 204 is installed below the battery protective inner shell 109. The flammable film 204 has flammable characteristics, so that it can be pre-destroyed by open flames to cause structural damage, thereby losing the activity of the fire extinguishing ball 205 and the movable piston 2031, so that the fire extinguishing ball 205 can smoothly fall into the open flame to extinguish the fire, and the movable piston 2031 has movable conditions. A fire extinguishing ball 205 is fixed below the flammable film 204. When the fire extinguishing ball 205 encounters an open flame, dry powder can be exploded, thereby playing the role of fire extinguishing. A vertical transmission component 203 is fixedly connected above the flammable film 204. The vertical transmission component 203 includes a movable piston 20 31. The movable piston 2031 is sealed with the housing 201 to avoid air leakage, so that the hot air pressure can smoothly lift the movable piston 2031 to move, so that the tooth plate 2032 can smoothly transmit upward with the second gear 206. The movable piston 2031 is arranged in the housing 201. The tooth plate 2032 is fixedly connected above the movable piston 2031. The tooth plate 2032 is meshed with the second gear 206. The vertical transmission component 203 is meshed with the second gear 206. The two second gears 206 are fixedly connected to the threaded fixing component 202. The threaded fixing component 202 is rotatably connected to the two housings 201. The middle part of the threaded fixing component 202 is meshed with a tooth segment 209, and the tooth segment 209 is fixedly connected to the first joint 210. The first joint 210 is connected to the new energy vehicle battery body 102 through a cable. The first joint 210 is plugged into the second joint 211, and the first joint 210 and the second joint 211 are connected, so that the new energy vehicle can be powered on.

[0025] In this embodiment: when the new energy vehicle battery body 102 is burning, due to the flammable characteristics of the flammable film 204, the flammable film 204 can be easily burned through and destroyed, so that the fire extinguishing ball 205 can fall off to the position of the new energy vehicle battery body 102, and the fire extinguishing ball 205 sprays dry powder when encountering an open flame to extinguish the fire, weaken the fire and reduce the spread of the fire. Secondly, after the flammable film 204 is destroyed, the fixing of the movable piston 2031 is removed, and the movable piston 2031 can be pushed up by the hot air pressure generated by the combustion, so that the movable piston 2031 moves upward to above the exhaust whistle 208. At this time, the exhaust pressure can be released through the exhaust whistle 208 to reduce the risk of air pressure explosion, and the sound of the exhaust whistle 208 can effectively remind people.

[0026] Example 2: Reference Figure 4-6 and Figure 8-12, a new energy vehicle battery fireproof and explosion-proof liquid cooling device, including a threaded fixing component 202, the threaded fixing component 202 includes a transmission screw 2021, the threads at both ends of the transmission screw 2021 are arranged oppositely, and the threads at both ends of the transmission screw 2021 are arranged oppositely, so that the rotation of the transmission screw 2021 can drive two threaded barrels 2022 to approach or move away from each other, so that the threaded barrel 2022 is screwed into the fixing port 112, so that the position of the battery protection inner shell 109 can be locked to prevent the battery protection inner shell 109 from falling off, and the two threaded barrels 2022 can move away from each other and detach from the fixing port 112, so that the battery protection inner shell 109 can be removed, and the two ends of the transmission screw 2021 are threadedly connected with the threaded barrel 2022, the threaded barrel 2022 is inserted into the fixing port 112, and the middle part of the transmission screw 2021 is fixed The first gear 2025 is fixedly connected, and the first gear 2025 is meshed with the tooth segment 209. The rotation of the transmission screw 2021 can drive the first gear 2025 to rotate, so that the first gear 2025 and the tooth segment 209 are transmitted, so that the tooth segment 209 drives the first joint 210 and the second joint 211 to separate, thereby playing a role of power off, and allowing the battery protection inner shell 109 to slide down smoothly to complete the separation from the flame-retardant outer shell 101. The bottom of the threaded cylinder 2022 is fixedly connected with a slider 2023, and the slider 2023 is slidably connected to the guide rail 2024. The guide rail 2024 can guide the slider 2023 so that the slider 2023 can slide smoothly in the guide rail 2024, so that the threaded cylinder 2022 moves smoothly, and the guide rail 2024 is fixedly connected above the battery protection inner shell 109; The vertical transmission assembly 203 includes a movable piston 2031, which is disposed in the housing 201. A toothed plate 2032 is fixedly connected above the movable piston 2031. The toothed plate 2032 is meshed with the second gear 206. The toothed plate 2032 moves up and down to transmit the second gear 206, so that the second gear 206 can drive the transmission screw 2021 to rotate. Two guide bars 110 are fixedly connected to both sides of the battery protection inner shell 109, and the guide bars 110 are slidably connected to the limit openings 111. The guide bars 110 can be guided by the limit openings 111, so that the guide bars 110 can move stably up and down along the limit openings 111, so that the battery protection inner shell 109 can move stably. The limit openings 111 are opened on the inner wall of the flame-retardant outer shell 101, and two fixing openings 112 are arranged above the flame-retardant outer shell 101. The fixing openings 112 can provide fixing points for the threaded cylinder 2022. Two support bars 207 are fixedly connected to the top of the battery protection inner shell 109, and sliding openings are opened on both sides of the first joint 210. The first joint 210 slides on the support bar 207 through the sliding openings. The first joint 210 can be guided by the support bar 207, so that the first joint 210 can slide smoothly up and down along the support bar 207 through the sliding openings, so that the tooth segment 209 can smoothly transmit with the first gear 2025.

[0027] In this embodiment: when an open flame appears in the new energy vehicle battery main body 102, the flammable film 204 is affected by the open flame and its structure is destroyed, making the movable piston 2031 ineffective. As the heat accumulates, the gas pressure pushes up the movable piston 2031, so that the movable piston 2031 drives the tooth plate 2032 upward to move, so that the tooth plate 2032 drives upward with the second gear 206, and the second gear 206 drives the transmission screw 2021 to rotate, and the transmission screw 2021 drives the two threaded cylinders 2022 to move away from each other and disengage from the fixing port 112, so that the battery protection inner shell 109 fails to be fixed, and the transmission screw 2021 drives the first gear 2025 and the tooth segment 209 to drive, so that the tooth segment 209 drives the first joint 210 and the second joint 211 to separate, so that the battery protection inner shell 109 can be thrown away together with the new energy vehicle battery main body 102, so as to avoid further loss, and the power can be cut off for processing, reducing safety hazards, and the new energy vehicle battery main body 102 can be thrown out smoothly.

[0028] Example 3: Reference Figure 4-12 , a fireproof and explosion-proof liquid cooling device for a new energy vehicle battery, comprising a threaded fixing assembly 202, the threaded fixing assembly 202 comprising a transmission screw 2021, the threads at both ends of the transmission screw 2021 being arranged oppositely, the threads at both ends of the transmission screw 2021 being threadedly connected with a threaded barrel 2022, the threaded barrel 2022 being inserted into a fixing port 112, a first gear 2025 being fixedly connected to the middle of the transmission screw 2021, the first gear 2025 being meshed with a tooth segment 209, the first gear 2025 being rotated to transmit to the tooth segment 209, so that the tooth segment 209 can drive the first joint 210 to separate from the second joint 211, a slider 2023 being fixedly connected to the bottom of the threaded barrel 2022, the slider 2023 being slidably connected to a guide rail 2024, and the guide rail 2024 being fixedly connected to the top of the battery protective inner shell 109; The vertical transmission assembly 203 includes a movable piston 2031, which is disposed in the housing 201. A toothed plate 2032 is fixedly connected above the movable piston 2031, and the toothed plate 2032 is meshed with the second gear 206; Two guide bars 110 are fixedly connected to both sides of the battery protection inner shell 109. The guide bars 110 are slidably connected to the limit openings 111. The limit openings 111 are opened on the inner wall of the flame-retardant outer shell 101. Two fixing openings 112 are provided on the upper side of the flame-retardant outer shell 101. The drainage control assembly 107 includes a transmission gear rod 1071, on which a slide groove is provided. The transmission gear rod 1071 slides on the limit bar 1072 through the slide groove. The transmission gear rod 1071 can be guided by the limit bar 1072, so that the transmission gear rod 1071 can move smoothly along the limit bar 1072 through the slide groove, so that the transmission gear rod 1071 can smoothly transmit to the opening and closing gear valve 1063. The limit bar 1072 is fixedly connected to the bottom of the battery protection inner shell 109. One end of the limit bar 1072 is fixedly connected to a rolling pulley 1073. The rolling property of the rolling pulley 1073 can reduce the friction resistance between the guide port 104, so as to maintain smooth operation. The rolling pulley 1073 cooperates with the guide port 104, and the bottom of the guide port 104 is an arc surface. The drainage assembly 106 includes a drainage pipe 1061, which is installed on the battery protection inner shell 109 and communicated with the water storage chamber 105. The cooling liquid can be guided to be discharged from the water storage chamber 105 through the drainage pipe 1061. The drainage pipe 1061 is provided with an opening and closing gear valve 1063, which is composed of a gear and a valve, so that the valve can control the opening and closing of the drainage pipe 1061. When assembling, the flame-retardant outer shell 101 is sleeved on the outside of the battery protection inner shell 109, so that the guide port 104 corresponds to the rolling pulley 1073, and the bottom of the guide port 104 is an arc surface, so that the guide port 104 can squeeze the rolling pulley 1073 to move The rolling pulley 1073 can drive the transmission gear rod 1071 to move, and the transmission gear rod 1071 transmits the transmission to the opening and closing gear valve 1063. The opening and closing gear valve 1063 drives the reset torsion spring 1062 to twist to store elastic potential energy. The opening and closing gear valve 1063 is engaged with the transmission gear rod 1071. A reset torsion spring 1062 is fixed under the opening and closing gear valve 1063. When the rolling pulley 1073 is separated from the guide port 104, the torsion of the reset torsion spring 1062 can drive the opening and closing gear valve 1063 to rotate, and the opening and closing gear valve 1063 can open the drain pipe 1061 to realize drainage operation, and the bottom end of the reset torsion spring 1062 is fixedly connected to the drain pipe 1061.

[0029] In this embodiment: an open flame is generated by the new energy vehicle battery body 102 to destroy the structure of the flammable film 204, and as the hot gas pressure increases, the movable piston 2031 can be pushed up, so that the movable piston 2031 drives the tooth plate 2032 to transmit upward with the second gear 206, and the transmission screw 2021 rotates to drive the threaded cylinder 2022 away from the fixed port 112, and the transmission screw 2021 also drives the first gear 2025 to transmit with the tooth segment 209, so that the tooth segment 209 drives the first joint 210 to separate from the second joint 211, so that it can be powered off, and the battery protection inner shell 109 slides downward, so that the rolling pulley 1073 is separated from the guide port 104, and at this time, the torsion of the reset torsion spring 1062 drives the opening and closing tooth valve 1063 to rotate, and the opening and closing tooth valve 1063 opens the drain pipe 1061 to discharge the coolant inside the water storage chamber 105, thereby avoiding the risk of water vapor explosion caused by the high temperature generated by the combustion of the new energy vehicle battery body 102, thereby improving safety.

[0030] Working principle: When dissipating heat, the cooling liquid in the water storage cavity 105 is extracted by the liquid cooling water pump 1031, and the cooling liquid is input into the liquid cooling pipe 1032. The liquid cooling pipe 1032 flows around the outer periphery of the new energy vehicle battery body 102 and performs heat exchange operation, so that the new energy vehicle battery body 102 is liquid-cooled and dissipated, and the cooling liquid flows back into the water storage cavity 105, and then is cooled by the cooling liquid refrigerator 108; When an open fire occurs in the battery body 102 of the new energy vehicle, the open fire destroys the structure of the flammable film 204, and the fire extinguishing ball 205 falls on the battery body 102 of the new energy vehicle, and is affected by the open fire to spray dry powder to suppress the open fire. As the hot air pressure accumulates, the hot air pressure pushes up the moving piston 2031, and the moving piston 2031 moves upward to above the exhaust whistle 208. The exhaust whistle 208 exhausts and makes a sound, attracting the attention of people and keeping away. Secondly, the moving piston 2031 moves upward to drive the toothed plate 2032 to transmit upward to the second gear 206, and the second gear 206 drives the transmission screw 2021 to rotate, and the transmission screw 202 1 drives the threaded barrel 2022 to move, and the threaded barrel 2022 is separated from the fixing port 112, so that the battery protection inner shell 109 is fixed invalid, and the transmission screw 2021 drives the first gear 2025 and the tooth segment 209 to transmit, the tooth segment 209 moves and drives the first joint 210 to move and separate from the second joint 211, and the battery protection inner shell 109 slides downward off the flame-retardant outer shell 101, so that the rolling pulley 1073 is separated from the guide port 104, at this time, the torsion of the reset torsion spring 1062 is reset, and the reset torsion spring 1062 drives the opening and closing tooth valve 1063 to rotate, so that the drain pipe 1061 is opened, and the coolant is discharged from the drain pipe 1061.

[0031] The above are only preferred specific implementation modes of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical solutions and inventive concepts of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A fireproof and explosion-proof liquid cooling device for a new energy vehicle battery, comprising a new energy vehicle battery protection mechanism (100) and a fire extinguishing and shedding mechanism (200), characterized in that: The fire extinguishing and shedding mechanism (200) is mounted above the new energy vehicle battery protection mechanism (100); The new energy vehicle battery protection mechanism (100) comprises a flame retardant outer shell (101), a battery protection inner shell (109) is provided inside the flame retardant outer shell (101), a new energy vehicle battery body (102) is provided in the battery protection inner shell (109), the new energy vehicle battery body (102) is covered with a battery liquid cooling component (103), one end of the battery liquid cooling component (103) extends downward and is in communication with a water storage chamber (105), and the water storage chamber (105) is provided at the battery The battery protective inner shell (109) is provided below the battery protective inner shell (109), two drainage components (106) connected to the water storage chamber (105) are installed on both sides below the battery protective inner shell (109), the drainage components (106) are engaged with the drainage control components (107), the drainage control components (107) are fixedly connected below the battery protective inner shell (109), one end of the drainage control components (107) is connected to the guide opening (104), and the guide opening (104) is opened on the inner wall of the flame retardant outer shell (101); The fire extinguishing and shedding mechanism (200) comprises two outer shells (201), wherein the outer shells (201) are mounted above a battery protective inner shell (109), a plurality of exhaust whistles (208) are arranged outside the battery protective inner shell (109), a flammable film (204) is mounted below the battery protective inner shell (109), a fire extinguishing ball (205) is fixed below the flammable film (204), a vertical transmission component (203) is fixedly connected above the flammable film (204), and the vertical transmission component (203) is connected to the second gear. The second gears (206) are meshedly connected to the threaded fixing assembly (202), the threaded fixing assembly (202) is rotatably connected to the two housings (201), a tooth segment (209) is meshedly connected to the middle of the threaded fixing assembly (202), the tooth segment (209) is fixedly connected to the first connector (210), the first connector (210) is connected to the new energy vehicle battery body (102) via a cable, and the first connector (210) is plugged into the second connector (211).

2. A fireproof and explosion-proof liquid cooling device for new energy vehicle batteries according to claim 1, characterized in that: A coolant cooler (108) is installed inside the water storage cavity (105), and the bottom of the guide opening (104) is a curved surface.

3. A fireproof and explosion-proof liquid cooling device for new energy vehicle batteries according to claim 1, characterized in that: Two guide bars (110) are fixedly connected to both sides of the battery protection inner shell (109); the guide bars (110) are slidably connected to the limit openings (111); the limit openings (111) are formed on the inner wall of the flame-retardant outer shell (101); and two fixing openings (112) are provided on the top of the flame-retardant outer shell (101).

4. A fireproof and explosion-proof liquid cooling device for new energy vehicle batteries according to claim 1, characterized in that: The drainage control assembly (107) comprises a transmission gear rod (1071), the transmission gear rod (1071) is provided with a slide groove, the transmission gear rod (1071) slides on a limit bar (1072) through the slide groove, the limit bar (1072) is fixedly connected below the battery protection inner shell (109), one end of the limit bar (1072) is fixedly connected to a rolling pulley (1073), and the rolling pulley (1073) cooperates with the guide opening (104).

5. A fireproof and explosion-proof liquid cooling device for new energy vehicle batteries according to claim 4, characterized in that: The drainage assembly (106) comprises a drainage pipe (1061), the drainage pipe (1061) being mounted on the battery protective inner shell (109) and communicating with the water storage chamber (105), the drainage pipe (1061) being provided with an opening and closing gear valve (1063), the opening and closing gear valve (1063) being meshed with a transmission gear rod (1071), a return torsion spring (1062) being fixed below the opening and closing gear valve (1063), the bottom end of the return torsion spring (1062) being fixedly connected to the drainage pipe (1061).

6. A fireproof and explosion-proof liquid cooling device for new energy vehicle batteries according to claim 1, characterized in that: The battery liquid cooling assembly (103) comprises a liquid cooling water pump (1031), a water inlet of the liquid cooling water pump (1031) extending downward into the water storage chamber (105), a water outlet of the liquid cooling water pump (1031) communicating with a liquid cooling pipe (1032), the liquid cooling pipe (1032) being wound around and wrapped around a new energy vehicle battery body (102), the liquid cooling pipe (1032) being fixedly connected to a battery protective inner shell (109), and one end of the liquid cooling pipe (1032) communicating with the water storage chamber (105).

7. A fireproof and explosion-proof liquid cooling device for new energy vehicle batteries according to claim 1, characterized in that: Two support bars (207) are fixedly connected to the top of the battery protection inner shell (109), and sliding openings are provided on both sides of the first joint (210), and the first joint (210) slides on the support bars (207) through the sliding openings.

8. A fireproof and explosion-proof liquid cooling device for new energy vehicle batteries according to claim 3, characterized in that: The threaded fixing assembly (202) comprises a transmission screw (2021), the threads at both ends of the transmission screw (2021) being arranged opposite to each other, the two ends of the transmission screw (2021) being threadedly connected to a threaded barrel (2022), the threaded barrel (2022) being inserted into a fixing port (112), the middle portion of the transmission screw (2021) being fixedly connected to a first gear (2025), the first gear (2025) being meshed with a tooth segment (209).

9. A fireproof and explosion-proof liquid cooling device for new energy vehicle batteries according to claim 8, characterized in that: A slider (2023) is fixedly connected to the bottom of the threaded cylinder (2022); the slider (2023) is slidably connected to a guide rail (2024); and the guide rail (2024) is fixedly connected above the battery protective inner shell (109).

10. A fireproof and explosion-proof liquid cooling device for new energy vehicle batteries according to claim 1, characterized in that: The vertical transmission assembly (203) comprises a movable piston (2031), wherein the movable piston (2031) is disposed in the housing (201), and a toothed plate (2032) is fixedly connected above the movable piston (2031), wherein the toothed plate (2032) meshes with the second gear (206).

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