Flame-retardant new energy battery box and electric equipment

Abstract

The invention provides a flame-retardant new energy battery box and electric equipment, and relates to the technical field of new energy batteries, the flame-retardant new energy battery box comprises a box body, a box body cover plate and a turning plate flame-retardant device; the turning plate flame-retardant device comprises a top shell, a movable baffle and a turning plate mechanism; a cover plate window is arranged in the middle area of the box body cover plate; the top shell is fixed to the upper plate face of the box body cover plate, a powder cavity is formed in the top shell, and a mounting opening vertically communicating the powder cavity with a cover plate window is formed in the bottom wall. The movable baffle is rotationally installed at the bottom of the top shell, and the plate turning mechanism controls the movable baffle to rotate so as to cover or open the installation opening. According to the new energy battery box, when the interior of the new energy battery box is overheated, the movable baffle is controlled by the turning plate mechanism to open the mounting opening, so that flame-retardant powder in the top shell is scattered into the box body, the flame-retardant purpose is achieved, the flame-retardant effect of the new energy battery box is improved, and the use safety of the new energy battery box is further improved.

Description

Technical Field

[0001] The present invention relates to the technical field of new energy batteries, and particularly relates to a flame-retardant new energy battery box and an electrical equipment. Background Art

[0002] With the transformation of the global energy structure and the improvement of environmental protection awareness, new energy vehicles, as an important carrier for green travel, have been widely developed. As the core component of new energy vehicles, the technical development level of power batteries directly determines the driving range, safety performance, and service life of new energy vehicles, and the improvement of the energy density of power batteries has become a major focus of technological development. In order to improve the capacity and use safety of power batteries, researchers have continuously explored new battery materials and design structures. However, power batteries themselves have a risk of catching fire. Once situations such as short circuit of battery cells or over-discharge of the battery occur, it may lead to serious fire accidents, threatening the safety of passengers and property.

[0003] The new energy battery box is not only a physical container for accommodating power batteries (battery cells), but also undertakes multiple functions such as mechanical protection, thermal runaway protection, and electromagnetic shielding. Traditional battery boxes mostly use aluminum alloy or stainless steel materials. Although they have good mechanical strength and lightweight characteristics, their flame-retardant and heat-insulating performance has obvious shortcomings when dealing with extreme situations such as battery thermal runaway. When internal short circuit of battery cells causes thermal diffusion, the existing battery box materials are difficult to effectively delay the spread of flames and heat conduction, resulting in a chain reaction of adjacent power batteries (battery cells), and ultimately may lead to a vehicle fire accident. Summary of the Invention

[0004] The purpose of the present invention is to provide a flame-retardant new energy battery box and an electrical equipment to alleviate the above technical problems.

[0005] To achieve the above purpose, the embodiments of the present invention adopt the following technical solutions: In the first aspect, the embodiments of the present invention provide a flame-retardant new energy battery box, including a box body, a box body cover plate, and a flap flame-retardant device; An opening is provided at the top of the box body, the box body cover plate is used to cover or open the opening of the box body, and a cover plate window is provided in the middle area of the box body cover plate; The flap flame-retardant device includes: A top shell, fixed to the upper plate surface of the box body cover plate; a powder chamber for containing flame-retardant powder is provided inside the top shell, and an installation opening for communicating the powder chamber and the cover plate window up and down is provided on the bottom wall of the top shell; A movable baffle, rotatably installed at the bottom of the top shell, covering the installation opening when the movable baffle is in the first rotation position, and opening the installation opening when the movable baffle is in the second rotation position; The flap mechanism is installed on the inner side wall of the top shell and controls the switching of the movable baffle between the first rotation position and the second rotation position.

[0006] In an alternative embodiment, in the free state, the movable baffle is in the second rotation position under the action of its own gravity, and the flap mechanism is configured to be able to lock the movable baffle in the first rotation position under the first working condition and release the movable baffle under the second working condition.

[0007] In an alternative embodiment, the flame-retardant new energy battery box further includes a temperature sensor installed on the inner wall of the box body; The flap mechanism includes an electromagnetic lock and an electromagnetic lock controller. The lock shell of the electromagnetic lock is embedded and installed on the inner side wall of the top shell, and the lock tongue of the electromagnetic lock is horizontally telescopically installed inside the lock shell; the lock tongue includes two locking plates arranged horizontally at intervals up and down; in the first working condition, the lock tongue extends out of the lock shell to clamp and lock the movable baffle in the first rotation position, and in the second working condition, the lock tongue retracts into the lock shell to release the movable baffle; The electromagnetic lock controller is integrated in the lock shell and is signal-connected or circuit-connected to the temperature sensor; the electromagnetic lock controller controls the electromagnetic lock to extend or retract the lock tongue into the lock shell according to the temperature information transmitted by the temperature sensor.

[0008] In an alternative embodiment, the flap mechanism further includes an acceleration flipping assembly; The acceleration flipping assembly includes a mounting plate and a spring member; The mounting plate is fixed to the inner side wall of the top shell and is arranged above the movable baffle; one end of the spring member is fixedly connected to the mounting plate, and the other end of the spring member is fixedly connected to the movable baffle. The spring member always has a tendency to press down the movable baffle to flip the movable baffle towards the second rotation position.

[0009] In an alternative embodiment, a bottom wall beam is provided at the bottom of the top shell. The movable baffle includes a first baffle and a second baffle respectively hinged on both sides of the bottom wall beam; flap mechanisms one corresponding to the first baffle and flap mechanism two corresponding to the second baffle are respectively provided on the opposite inner side walls of the top shell.

[0010] In an alternative embodiment, the flame-retardant new energy battery box further includes a jet flame-retardant device; the jet flame-retardant device includes: A mounting box, fixedly connected to the outer side wall of the box body; A high-pressure gas tank, arranged inside the mounting box, and the high-pressure gas tank is filled with a flame-retardant gas; A connecting pipe is fixed to the side wall of the box body, and a part of it is located outside the box body and connected to the air outlet of the high-pressure gas tank, and the other part is located inside the box body. A plurality of nozzles are provided at the part of the connecting pipe located inside the box body. A normally closed solenoid valve is provided on the connecting pipe. The controller of the normally closed solenoid valve is in signal connection with a temperature sensor provided on the inner wall of the box body to control the normally closed solenoid valve to automatically open when the temperature information transmitted by the temperature sensor is higher than a preset temperature.

[0011] In an alternative embodiment, the connecting pipe includes a double-sided connecting pipe extending towards opposite side walls of the box body respectively, and the nozzles and the normally closed solenoid valve are respectively provided on each side of the connecting pipe.

[0012] In an alternative embodiment, the flame-retardant new energy battery box further includes a battery cell support and a heat exchange and cooling device provided inside the box body; The battery cell support is fixed to the inner side wall of the box body, and a hollow part that penetrates up and down is provided on the battery cell support; The heat exchange and cooling device includes: A heat exchange box is fixed to the bottom of the battery cell support, and a coolant is contained inside the heat exchange box; an insertion port is provided on the bottom wall of the heat exchange box; a heat exchange controller is provided on the outer side wall of the heat exchange box; A semiconductor refrigeration sheet is fixed to the bottom outer wall of the heat exchange box and closes the insertion port; a cold conduction pipe is fixedly connected to the cold end of the semiconductor refrigeration sheet; The cold conduction pipe passes through the insertion port and is immersed in the coolant; A first heat dissipation fan is fixedly installed at the bottom of the semiconductor refrigeration sheet through a downward protruding mounting bracket for downwardly discharging the heat generated at the hot end of the semiconductor refrigeration sheet; Both the semiconductor refrigeration sheet and the first heat dissipation fan are connected to the heat exchange controller, and the heat exchange controller controls the semiconductor refrigeration sheet and the first heat dissipation fan to start and stop synchronously.

[0013] In an alternative embodiment, the battery cell support includes a plurality of support bars, the plurality of support bars are parallel to each other and are spaced apart from each other in pairs, and both ends of each support bar are respectively fixedly connected to two opposite inner side walls of the battery box; a plurality of limiting grooves are provided on the top wall of the heat exchange box, and each support bar is correspondingly embedded in each limiting groove.

[0014] In a second aspect, an embodiment of the present invention provides an electrical equipment, including the flame-retardant new energy battery box according to any one of the alternative embodiments of the first aspect.

[0015] The embodiments of the present invention can at least achieve the following beneficial effects: The flame-retardant new energy battery box provided in this embodiment can, when the inside of the battery box body overheats, control the movable baffle to open the installation opening provided on the bottom wall of the top shell through the flap mechanism, so as to sprinkle the flame-retardant powder in the powder cavity of the top shell into the inside of the box body. The flame-retardant powder quickly covers the surface of the battery, effectively isolating oxygen, achieving the purpose of flame retardance, and improving the use safety of the new energy battery box and the electrical equipment using it.

[0016] For other beneficial effects that can be achieved by the embodiments of the present invention, refer to the detailed description in the specific implementation part of the specification of this application. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the specific implementation manners of the present invention or the technical solutions in the prior art, the following will briefly introduce the drawings required for use in the description of the specific implementation manners or the prior art. Obviously, the drawings in the following description are some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0018] Figure 1 It is a schematic diagram of the overall structure of the flame-retardant new energy battery box provided in the embodiment of the present invention from one perspective; Figure 2 For the flame-retardant new energy battery box provided in the embodiment of the present invention in Figure 1 a perspective semi-sectional structure schematic diagram; Figure 3 It is a schematic diagram of the internal structure of the flap flame-retardant device in the flame-retardant new energy battery box provided in the embodiment of the present invention; Figure 4 It is a schematic diagram of the overall structure of the flame-retardant new energy battery box provided in the embodiment of the present invention from another perspective; Figure 5 It is a schematic diagram of the overall structure of the jet flame-retardant device in the flame-retardant new energy battery box provided in the embodiment of the present invention; Figure 6 It is an axonometric structure schematic diagram of the heat exchange and cooling device in the flame-retardant new energy battery box provided in the embodiment of the present invention; Figure 7 It is a partial structure schematic diagram of the heat exchange and cooling device in the flame-retardant new energy battery box provided in the embodiment of the present invention.

[0019] Reference numerals: 1 - box body; 2 - box body cover plate; 21 - limit block; 22 - box cover handle; 3 - buckle lock; 4 - temperature sensor; 5 - cell support; 6 - second heat dissipation fan; 100 - Flap Flame Retardant Device; 110 - Top Housing; 1101 - Insert Block; 111 - Housing Cover Plate; 120 - Movable Baffle; 121 - First Baffle; 122 - Second Baffle; 123 - Reset Handle; 130 - Flap Mechanism; 1301 - Flap Mechanism One; 1302 - Flap Mechanism Two; 131 - Electromagnetic Lock; 1311 - Lock Housing; 1312 - Lock Tongue; 132 - Signal Controller; 133 - Accelerated Flip Assembly; 1331 - Mounting Plate; 1332 - Spring Member; 140 - Bottom Wall Beam 200 - Jet Flame Retardant Device; 210 - Installation Box; 220 - High - pressure Gas Tank; 230 - Connecting Pipe; 240 - Normally Closed Solenoid Valve; 250 - Support Clip 300 - Heat Exchange and Cooling Device; 310 - Heat Exchange Box; 311 - Limit Slot; 320 - Heat Exchange Controller; 330 - Thermoelectric Cooler; 340 - Heat Conducting Pipe; 341 - Heat Conducting Sheet; 350 - Cooling Fan One; 351 - Mounting Frame Detailed Embodiment

[0020] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are some, but not all, of the embodiments of the present invention. Usually, the components of the embodiments of the present invention described and illustrated in the accompanying drawings here can be arranged and designed in various different configurations.

[0021] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed present invention, but merely represents selected embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts fall within the scope of protection of the present invention.

[0022] It should be noted that: Similar reference numerals and letters indicate similar items in the drawings. Therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.

[0023] In the description of the present invention, it should be noted that the orientation or positional relationships indicated by the terms "upper", "lower", "vertical", "horizontal", "inner", "outer", etc. are based on the orientation or positional relationships shown in the drawings, or the orientation or positional relationships in which the invention product is usually placed during use. It is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply 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 of the present invention. In addition, the terms "first", "second", "third", etc. are only used for descriptive distinction and cannot be understood as indicating or implying relative importance.

[0024] In addition, the terms "horizontal" and "vertical" do not mean that the components must be absolutely horizontal or suspended, but can be slightly tilted. For example, "horizontal" only means that its direction is more horizontal than "vertical", which does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0025] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "setting", "installation" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0026] Some embodiments of the present invention are described in detail below in conjunction with the accompanying drawings. In the absence of conflict, the following embodiments and features in the embodiments can be combined with each other.

[0027] First aspect This embodiment provides a flame retardant new energy battery box, referring to Figures 1 to 3 The flame-retardant new energy battery box includes a box body 1, a box body cover 2 and a flap flame-retardant device 100. Specifically, a box body opening is provided at the top of the box body 1, and the box body cover 2 is used to cover or open the box body opening, and a cover window is provided in the middle area of the box body cover 2. The flap flame-retardant device 100 includes a top shell 110, a movable baffle 120 and a flap mechanism 130, wherein: the top shell 110 is fixed to the upper plate surface of the box body cover 2; a powder cavity for containing flame-retardant powders such as aluminum hydroxide, magnesium hydroxide, and silicon-based compounds is provided inside the top shell 110, and an installation port for connecting the powder cavity and the cover window up and down is provided on the bottom wall of the top shell 110. The movable baffle 120 is rotatably installed at the bottom of the top shell 110, and when the movable baffle 120 is in the first rotation position, it covers the installation port provided on the bottom wall of the top shell 110, and when the movable baffle 120 is in the second rotation position, it opens the installation port provided on the bottom wall of the top shell 110. The flap mechanism 130 is installed on the inner side wall of the top housing 110 to control the movable baffle 120 to switch between the first rotation position and the second rotation position.

[0028] The flame-retardant new energy battery box provided in this embodiment can control the movable baffle 120 to open the installation port provided on the bottom wall of the top shell 110 through the flap mechanism 130 when the inside of the battery box 1 is overheated, so as to sprinkle the flame-retardant powder in the powder cavity of the top shell 110 into the inside of the box 1. The flame-retardant powder quickly covers the surface of the battery, effectively isolating oxygen, achieving the purpose of flame retardancy, and improving the safety of the new energy battery box and the electrical equipment using the same.

[0029] In this embodiment, optionally but not limited to, the box cover 2 is fixed to the box body 1 by a buckle lock 3. For ease of operation, a box cover handle 22 is provided on the upper surface of the box cover 2. For the specific fixing method of the top shell 110 fixed to the upper surface of the box cover 2, including but not limited to as Figure 1 , Figure 2 and Figure 4 shown, a plurality of limit blocks 21 are provided on the upper surface of the box cover 2, and a clamping space is defined by the plurality of limit blocks 21. Slots are provided on the surface of each limit block 21 facing the clamping space, and insertion blocks 1101 corresponding to the slots one by one are provided on the outer side wall of the top shell 110. The top shell 110 is clamped from top to bottom inside the clamping space, and each insertion block 1101 is clamped in each slot correspondingly. This installation method is simple and efficient, and can ensure the accurate alignment between the installation opening provided on the top shell 110 and the cover window provided on the box cover 2.

[0030] Specifically, in this embodiment, the response modes of the flap mechanism 130 for controlling the movable baffle 120 to switch between the first rotation position and the second rotation position include but are not limited to: Adopt Method 1: Another control system is provided to automatically control the flap mechanism 130 to work. For example, a temperature sensor 4 is installed on the inner wall of the box body 1, and the flap mechanism 130 includes a control unit and an execution unit. The control unit is signal-connected or electrically connected to the temperature sensor 4. The control unit receives the temperature information transmitted by the temperature sensor 4, compares the temperature information with a preset temperature threshold, and controls the execution unit to work to control the movable baffle 120 to switch between the first rotation position and the second rotation position; Or, adopt Method 2: A manual trigger mechanism linked to the flap mechanism 130 is designed outside the top shell 110, and the staff manually controls the flap mechanism 130 to work according to the operating state of the electrical equipment. This design can avoid misoperation when the electronic control system fails. However, there may be a problem of untimely response; Or, a hybrid design of Method 1 and Method 2.

[0031] In this embodiment, there are various optional design schemes for the specific structure of the flap mechanism 130. When the switching mode of switching the movable baffle 120 from the first rotation position to the second rotation position is switching mode 1, and the switching mode of switching the movable baffle 120 from the second rotation position to the first rotation position is switching mode 2, the specific switching modes of the flap mechanism 130 for controlling the movable baffle 120 to switch between the first rotation position and the second rotation position at least include switching mode 1 to quickly scatter the flame retardant powder for flame retardancy when the inside of the battery box is overheated. For switching mode 2, it can be controlled by the flap mechanism 130 or manually.

[0032] In some alternative embodiments of the present embodiment, the specific switching mode in which the flap mechanism 130 controls the movable baffle 120 to switch between the first rotation position and the second rotation position includes both switching mode one and switching mode two. The flap mechanism 130 can be optionally but not limited to being connected to the free end of the movable baffle 120 through a telescopic mechanism (such as a hydraulic cylinder piston rod assembly, a motor push rod assembly, a cylinder piston rod assembly, etc.), thereby driving the rotation of the movable baffle 120 (not shown).

[0033] In some other alternative embodiments of the present embodiment, the specific switching mode in which the flap mechanism 130 controls the movable baffle 120 to switch between the first rotation position and the second rotation position only includes switching mode one and does not include switching mode two. Switching mode two is manually controlled. For example, in some specific embodiments, in the free state, the movable baffle 120 is in the second rotation position under the action of its own gravity. The flap mechanism 130 is configured to be able to lock the movable baffle 120 at the first rotation position under the first working condition, and release the movable baffle 120 under the second working condition.

[0034] For example, referring to Figures 1 to 3 , in some more specific embodiments, the flame-retardant new energy battery box further includes a temperature sensor 4 installed on the inner wall of the box body 1. The flap mechanism 130 includes an electromagnetic lock 131 and an electromagnetic lock controller. The lock shell 1311 of the electromagnetic lock 131 is embedded and installed on the inner side wall of the top shell 110. The lock tongue 1312 of the electromagnetic lock 131 is horizontally telescopically installed inside the lock shell 1311. The lock tongue 1312 includes two locking plates arranged horizontally at an interval up and down. Under the first working condition, the lock tongue 1312 extends out of the lock shell 1311, and its two locking plates clamp and lock the movable baffle 120 in the first rotation position. Under the second working condition, the lock tongue 1312 retracts into the lock shell 1311 to release the movable baffle 120. The electromagnetic lock controller is integrated in the lock shell 1311 and is signal-connected or circuit-connected to the temperature sensor 4. The electromagnetic lock controller controls the electromagnetic lock 131 to extend or retract the lock tongue 1312 out of the lock shell 1311 according to the temperature information transmitted by the temperature sensor 4.

[0035] In this alternative embodiment, the temperature sensor 4 fixedly installed on the inner wall of the box body 1 monitors the temperature in real time. The electromagnetic lock controller automatically controls the action state of the lock tongue 1312 according to the temperature information provided by the temperature sensor 4, realizing the effective management and control of the internal environment of the battery box without manual intervention. When an abnormal high temperature is detected, the flame-retardant mechanism is automatically triggered, improving the response speed of the flap flame-retardant device 100 and effectively preventing a fire caused by too high a temperature inside the battery box.

[0036] In addition, to facilitate the arrangement of the flap flame-retardant device 100, such as Figure 3As shown, a powder filling port is provided above the top shell 110. A shell cover plate 111 is provided on the powder filling port. The shell cover plate 111 is optionally but not limited to being rotatably connected to the top shell 110 through a hinge. A handle can be provided on the top surface of the shell cover plate 111 to facilitate the replenishment of the flame retardant powder into the powder chamber of the top shell 110. Moreover, a reset handle 123 is provided on the upper surface of the movable baffle 120. When replenishing the flame retardant powder, open the top shell 110. When the lock tongue 1312 retracts into the lock housing 1311, lift the movable baffle 120 upward to make the movable baffle 120 in the first rotation position for closing the installation port. Then control the lock tongue 1312 to extend out of the lock housing 1311 so that its two locking plates clamp and lock the movable baffle 120 in the first rotation position. Then add the flame retardant powder into the powder chamber of the top shell 110, and cover the shell cover plate 111.

[0037] Further optionally, the above-mentioned flap mechanism 130 further includes an acceleration flipping assembly 133; the acceleration flipping assembly 133 includes a mounting plate 1331 and a spring member 1332; the mounting plate 1331 is fixed to the inner side wall of the top shell 110 and is arranged above the movable baffle 120; one end of the spring member 1332 is fixedly connected to the mounting plate 1331, and the other end of the spring member 1332 is fixedly connected to the movable baffle 120. The spring member 1332 always has a movement tendency to press the movable baffle 120 downward to make the movable baffle 120 flip to the second rotation position. In this optional embodiment, by setting the mounting plate 1331 and the spring member 1332, when the movable baffle 120 flips, the elastic force accumulated by the spring member 1332 will accelerate the rotation of the movable baffle 120, so as to ensure that the movable baffle 120 can respond in time and quickly release the flame retardant powder, effectively avoiding or extinguishing the fire and ensuring the safety of the battery and the device. In this optional embodiment, a sealing strip can also be provided in the edge area of the movable baffle 120 to improve the sealing performance between the movable baffle 120 and the inner side wall of the top shell 110 in the first rotation position, preventing the flame retardant powder from falling through the gap between the movable baffle 120 and the inner side wall of the top shell 110, keeping the inside of the box 1 clean. Under the action of the elastic force accumulated by the spring member 1332, the sealing strip will not interfere with the quick flipping of the movable baffle 120 to the second rotation position.

[0038] In an alternative embodiment of the present embodiment, a bottom wall beam 140 is provided at the bottom of the top housing 110. The movable baffle 120 includes a first baffle 121 and a second baffle 122 respectively hinged to both sides of the bottom wall beam 140. On the opposite inner side walls of the top housing 110, a first flap mechanism 1301 corresponding to the first baffle 121 and a second flap mechanism 1302 corresponding to the second baffle 122 are respectively provided. In this alternative embodiment, by setting the two movable baffles 120 to flip synchronously, the problem of the flame retardant powder sliding down from one side of the movable baffle 120 is avoided, and the flame retardant powder can be more evenly scattered on the battery module. The evenly scattered flame retardant powder can more effectively cover all areas of the battery module, thereby more quickly suppressing and extinguishing a possible fire and improving the overall fire extinguishing efficiency.

[0039] In addition, in this alternative embodiment, when the flap mechanism 130 includes an electromagnetic lock 131 and an electromagnetic lock controller, it can also be as Figure 3 shown, a total signal controller 132 is provided on the outer side wall of the top housing 110, so that the temperature sensor 4 and each electromagnetic lock controller are communicatively connected to the signal controller 132 to control the electromagnetic lock controllers to be energized or de-energized synchronously.

[0040] To further improve the flame retardant effect, referring to Figure 4 and Figure 5 , in combination with Figure 2 , in an alternative embodiment of the present embodiment, the flame retardant new energy battery box further includes a jet flame retardant device 200. The jet flame retardant device 200 includes a mounting box 210, a high-pressure gas tank 220, a connecting pipe 230, and a normally closed solenoid valve 240. Specifically: the mounting box 210 is fixedly connected to the outer side wall of the box body 1; the high-pressure gas tank 220 is provided inside the mounting box 210, and the high-pressure gas tank 220 contains nitrogen, carbon dioxide, or other flame retardant gases; the connecting pipe 230 is fixed to the side wall of the box body 1, and a part of it is located outside the box body 1 and is connected to the air outlet of the high-pressure gas tank 220, and the other part is located inside the box body 1. A plurality of nozzles are provided at the part of the connecting pipe 230 located inside the box body 1; the normally closed solenoid valve 240 is provided on the connecting pipe 230, and the controller (provided on the valve body) of the normally closed solenoid valve 240 is signal-connected to the temperature sensor 4 provided on the inner wall of the box body 1 to control the normally closed solenoid valve 240 to automatically open when the temperature information transmitted by the temperature sensor 4 is higher than the preset temperature. In this alternative embodiment, when the temperature sensor 4 detects an abnormal high temperature, the normally closed solenoid valve 240 automatically opens, and the flame retardant gas in the high-pressure gas tank 220 can be quickly ejected through the connecting pipe 230 and the nozzles to fill the inside of the box body 1. This design effectively prevents the occurrence of battery explosion accidents and protects the safety of the battery box and surrounding equipment.

[0041] In this alternative embodiment, further optionally, the connecting pipe 230 includes a double-sided connecting pipe 230 extending towards opposite side walls of the box body 1, and spray nozzles and normally closed solenoid valves 240 are respectively provided on each side connecting pipe 230. This design ensures the uniform spraying of the flame retardant gas inside the box body 1, further improving the flame retardant effect.

[0042] In addition, to improve the spraying stability of the flame retardant gas and facilitate installation and maintenance, optionally, a plurality of support clips 250 can also be fixed on the side wall of the installation box 210 to clamp the connecting pipe 230 between these support clips 250.

[0043] To reduce the overheating and fire risks that the new energy battery box may face during use and improve the safety and reliability of the battery box and electrical equipment, in addition to the design of the above-mentioned dual flame retardant devices, referring to Figure 2 、 Figure 6 and Figure 7 In an alternative embodiment of this embodiment, the flame retardant new energy battery box further includes a battery cell support 5 and a heat exchange and cooling device 300 provided inside the box body 1. Specifically, the battery cell support is fixed to the inner side wall of the box body 1, and the battery cell support 5 is provided with a hollow portion penetrating up and down. The heat exchange and cooling device 300 includes a heat exchange box 310, a thermoelectric cooler 330, a heat conduction pipe 340, and a first cooling fan 350, where: the heat exchange box 310 is fixed to the bottom of the battery cell support 5 (the fixing method includes but is not limited to welding or clamping, etc.), and a coolant is contained inside the heat exchange box 310; an insertion port is provided on the bottom wall of the heat exchange box 310; a heat exchange controller 320 is provided on the outer side wall of the heat exchange box 310; the thermoelectric cooler 330 is fixed to the bottom outer wall of the heat exchange box 310 and closes the insertion port (the closing method includes but is not limited to the thermoelectric cooler 330 being adhesively sealed to the peripheral area of the insertion port on the bottom outer wall of the heat exchange box 310 near the edge area); a heat conduction pipe 340 is fixedly connected to the cold end of the thermoelectric cooler 330; the heat conduction pipe 340 passes through the aforementioned insertion port and is immersed in the coolant; the first cooling fan 350 is fixedly installed on the bottom of the thermoelectric cooler 330 through a downward protruding mounting bracket 351 for downwardly discharging the heat generated at the hot end of the thermoelectric cooler 330; both the thermoelectric cooler 330 and the first cooling fan 350 are connected to the heat exchange controller 320, and the heat exchange controller 320 controls the synchronous start and stop of the thermoelectric cooler 330 and the first cooling fan 350.

[0044] In this alternative embodiment, the battery cell support 5 is provided with a hollow portion that penetrates vertically. This structure not only supports the battery module but also provides a heat dissipation channel for the heat generated by the battery module. A part of the heat generated by the battery module provided on the battery cell support 5 is transferred to the heat exchange box 310 through the battery cell support 5, and a part directly acts on the heat exchange box 310 through the hollow portion, and exchanges heat with the coolant inside the heat exchange box 310. The heat exchange controller 320 controls the operation of the semiconductor refrigeration sheet 330 to efficiently cool the coolant through the cold conduction pipe 340. At the same time, the heat exchange controller 320 controls the synchronous operation of the first heat dissipation fan 350 and the semiconductor refrigeration sheet 330, accelerating the discharge of heat from the hot end of the semiconductor refrigeration sheet 330, ensuring the efficient and stable operation of the heat exchange and cooling device 300, and extending the service life of the heat exchange and cooling device 300. This alternative embodiment can accelerate the heat dissipation of the battery, ensure the temperature control of the battery during high-load operation, and improve the safety and reliability of the battery. Among them, a filter can be installed on the outer side of the first heat dissipation fan 350 to provide dust protection for the first heat dissipation fan 350.

[0045] Furthermore, in an alternative embodiment of this embodiment, a cold conduction fin 341 can also be sleeved outside the part where the cold conduction pipe 340 is inserted into the coolant. The design of the cold conduction pipe 340 and the cold conduction fin 341 increases the contact area between the cold end of the semiconductor refrigeration sheet 330 and the coolant, further improving the continuous heat absorption effect of the coolant and ensuring the efficient operation of the heat exchange and cooling device 300.

[0046] In an alternative embodiment of this embodiment, the above-mentioned battery cell support 5 includes a plurality of support bars, which are parallel to each other and spaced apart from each other in pairs. The two ends of each support bar are respectively fixedly connected to two opposite inner side walls of the battery box (the fixing methods include but are not limited to clamping, welding and other connection methods); a plurality of limiting grooves 311 are provided on the top wall of the heat exchange box 310, and each support bar is correspondingly embedded in each limiting groove 311. In this alternative embodiment, the part between every two adjacent limiting grooves 311 on the top wall of the heat exchange box 310 will form a convex structure matching the shape of the limiting groove 311. This convex structure passes through the gap between every two adjacent support bars, is closer to each battery module or battery cell, and is more conducive to the heat generated by the battery being conducted to the surface of the heat exchange box 310 and being absorbed by the coolant inside the heat exchange box 310, so as to achieve rapid cooling of the battery and ensure the stable operation of the battery in a high-temperature environment. Preferably, the height of the part between every two adjacent limiting grooves 311 on the top wall of the heat exchange box 310 is greater than the gap between every two adjacent support bars, and the part between every two adjacent limiting grooves 311 on the top wall of the heat exchange box 310 is in contact with the bottom surface of the battery cell provided on the battery cell support 5.

[0047] In an alternative embodiment of this embodiment, the battery cell bracket 5 is provided with a hollow portion that penetrates vertically. At the same time, cooling fans II 6 are respectively installed below the opposite side walls of the box body 1. In this way, during the operation of the battery, a part of the heat can be naturally dissipated through the hollow portion and discharged by the cooling fans II 6, further reducing the accumulation of heat in the box body 1, improving the heat dissipation efficiency, and ensuring the temperature stability of the battery under normal operating conditions. Similarly, a filter screen can be installed on the outer side of the cooling fans II 6 to protect the cooling fans II 6 from dust. The cooling fans II 6 can be turned on synchronously when the battery pack is working, or their control units can be signal- or circuit-connected to the temperature sensors 4 provided on the inner side wall of the box body 1. When the temperature sensors 4 detect that the temperature reaches the preset value, the cooling fans II 6 immediately operate.

[0048] In a second aspect This embodiment also provides an electrical equipment, which includes the flame-retardant new energy battery box provided in any alternative embodiment of the foregoing first aspect, and its beneficial effects can be obtained by referring to the alternative embodiments of the first aspect.

[0049] Finally, it should be noted that: the various embodiments in this specification are described in a progressive manner, and the key point of each embodiment is to illustrate the differences from other embodiments. The same or similar parts among the various embodiments can be referred to each other; the above embodiments in this specification are only used to illustrate the technical solutions of the present invention, rather than to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the various embodiments of the present invention.

Claims

1. A flame-retardant new energy battery box, characterized in that, It includes a box body, a box body cover plate and a flap flame retardant device; An opening is provided at the top of the box body, and the box body cover plate is used to cover or open the opening of the box body. A cover plate window is provided in the middle area of the box body cover plate; The flap flame retardant device includes: A top shell, fixed to the upper plate surface of the box body cover plate; a powder chamber for containing flame retardant powder is provided inside the top shell, and an installation opening for communicating the powder chamber and the cover plate window up and down is provided on the bottom wall of the top shell; A movable baffle, rotatably installed at the bottom of the top shell. When the movable baffle is in the first rotation position, it covers the installation opening, and when the movable baffle is in the second rotation position, it opens the installation opening; A flap mechanism, installed on the inner side wall of the top shell, to control the switching of the movable baffle between the first rotation position and the second rotation position.

2. The flame-retardant new energy battery box according to claim 1, wherein In the free state, the movable baffle is in the second rotation position under the action of its own gravity. The flap mechanism is configured to be able to lock the movable baffle in the first rotation position under the first working condition, and release the movable baffle under the second working condition.

3. The flame-retardant new energy battery box according to claim 2, wherein, The flame retardant new energy battery box further includes a temperature sensor installed on the inner wall of the box body; The flap mechanism includes an electromagnetic lock and an electromagnetic lock controller. The lock shell of the electromagnetic lock is embedded and installed on the inner side wall of the top shell, and the lock tongue of the electromagnetic lock is horizontally telescopically installed inside the lock shell; the lock tongue includes two locking plates arranged horizontally at an upper and lower interval; in the first working condition, the lock tongue extends out of the lock shell to clamp and lock the movable baffle in the first rotation position, and in the second working condition, the lock tongue retracts into the lock shell to release the movable baffle; The electromagnetic lock controller is integrated in the lock shell and is signal-connected or circuit-connected to the temperature sensor; the electromagnetic lock controller controls the electromagnetic lock to extend or retract the lock tongue into or out of the lock shell according to the temperature information transmitted by the temperature sensor.

4. The flame-retardant new energy battery box according to claim 3, wherein, The flap mechanism further includes an acceleration flipping assembly; The acceleration flipping assembly includes a mounting plate and a spring member; The mounting plate is fixed to the inner side wall of the top shell and is arranged above the movable baffle; one end of the spring member is fixedly connected to the mounting plate, and the other end of the spring member is fixedly connected to the movable baffle. The spring member always has a movement tendency to press down the movable baffle to flip the movable baffle to the second rotation position.

5. The flame-retardant new energy battery box according to any one of claims 1-4, characterized in that, A bottom wall beam is provided at the bottom of the top shell. The movable baffle includes a first baffle and a second baffle respectively hinged on both sides of the bottom wall beam; a flap mechanism one corresponding to the first baffle and a flap mechanism two corresponding to the second baffle are respectively provided on the opposite inner side walls of the top shell.

6. The flame-retardant new energy battery box according to claim 1, wherein, The flame retardant new energy battery box further includes a jet flame retardant device; the jet flame retardant device includes: An installation box, fixedly connected to the outer side wall of the box body; A high-pressure gas tank, arranged inside the installation box, and the high-pressure gas tank contains a flame retardant gas; A connecting pipe is fixed to the side wall of the box body, and a part of it is located outside the box body and connected to the air outlet of the high-pressure gas tank, and the other part is located inside the box body. A plurality of nozzles are provided at the part of the connecting pipe located inside the box body; A normally closed solenoid valve is provided on the connecting pipe. The controller of the normally closed solenoid valve is in signal connection with a temperature sensor provided on the inner wall of the box body to control the normally closed solenoid valve to automatically open when the temperature information transmitted by the temperature sensor is higher than a preset temperature.

7. The flame-retardant new energy battery box according to claim 6, characterized in that, The connecting pipe includes a double-sided connecting pipe extending respectively towards the opposite side walls of the box body, and the nozzles and the normally closed solenoid valve are respectively provided on each side of the connecting pipe.

8. The flame-retardant new energy battery box according to claim 1, wherein, The flame-retardant new energy battery box further includes a battery cell support and a heat exchange and cooling device provided inside the box body; The battery cell support is fixed to the inner side wall of the box body, and a hollow part is provided on the battery cell support and penetrates up and down; The heat exchange and cooling device includes: A heat exchange box is fixed to the bottom of the battery cell support, and a coolant is contained inside the heat exchange box; an insertion port is provided on the bottom wall of the heat exchange box; a heat exchange controller is provided on the outer side wall of the heat exchange box; A semiconductor refrigeration sheet is fixed to the bottom outer wall of the heat exchange box and closes the insertion port; a cold conduction pipe is fixedly connected to the cold end of the semiconductor refrigeration sheet; The cold conduction pipe passes through the insertion port and is immersed in the coolant; A first heat dissipation fan is fixedly installed at the bottom of the semiconductor refrigeration sheet through a downward protruding mounting bracket for downwardly discharging the heat generated at the hot end of the semiconductor refrigeration sheet; Both the semiconductor refrigeration sheet and the first heat dissipation fan are connected to the heat exchange controller, and the heat exchange controller controls the semiconductor refrigeration sheet and the first heat dissipation fan to start and stop synchronously.

9. The flame-retardant new energy battery box according to claim 8, characterized in that, The battery cell support includes a plurality of support bars, the plurality of support bars are parallel to each other and are spaced apart from each other in pairs, and both ends of each support bar are respectively fixedly connected to the two opposite inner side walls of the battery box; a plurality of limiting grooves are provided on the top wall of the heat exchange box, and each support bar is correspondingly embedded in each limiting groove.

10. An electrical device, characterized in that, A flame-retardant new energy battery box according to any one of claims 1 to 9.

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