Battery transportation protection device

Abstract

The embodiment of the invention provides a battery transportation protection device which comprises a box body, and the box body comprises a box cover and a box body. The box body is provided with a first opening, the box cover covers the first opening, and the box cover and the box body jointly define a first containing cavity used for containing a battery. And a pressure relief channel is formed in the box cover, and the pressure relief channel communicates with the first containing cavity and is used for exhausting gas in the first containing cavity. And gas generated by the battery is discharged by arranging the pressure relief channel, so that the risk of overhigh air pressure in the first accommodating cavity is reduced, and the battery transportation reliability of the battery transportation protection device is improved. Meanwhile, the pressure relief channel is arranged in the box cover, namely, the pressure relief channel is arranged above the first accommodating cavity, so that the pressure relief channel and the box body share the same occupied area, the size of the battery transportation protection device in the horizontal direction is reduced, and the space arrangement of the battery transportation protection device during transportation is facilitated.

Description

Technical Field

[0001] The present application relates to the field of battery technology, and in particular to a battery transportation protection device. Background Art

[0002] Energy conservation and emission reduction are key to the sustainable development of the automotive industry. Electric vehicles, due to their energy-saving and environmentally friendly advantages, have become an important component of the sustainable development of the automotive industry. For electric vehicles, battery technology is a key factor in their development.

[0003] In the development of battery technology, how to improve the reliability of battery transportation protection devices in transporting batteries is a technical problem that needs to be solved urgently. Summary of the Invention

[0004] The present application provides a battery transportation protection device, which can improve the reliability of the battery transportation protection device in transporting batteries.

[0005] This application is achieved through the following technical solutions:

[0006] In a first aspect, the present application provides a battery transport protection device, comprising a box body, the box body comprising a cover and a box body. The box body has a first opening, and the cover is engaged with the first opening to define, together with the box body, a first accommodating chamber for accommodating the battery. A pressure relief passage is formed within the cover, communicating with the first accommodating chamber for discharging gas within the first accommodating chamber.

[0007] According to the technical solution of the embodiment of the present application, thermal runaway of the battery is usually accompanied by gas generation. The accumulation of gas in the first accommodating chamber will cause the air pressure in the first accommodating chamber to increase, which may cause an explosion or push the box cover open, thereby causing losses. By providing a pressure relief channel to discharge the gas generated by the battery, the risk of excessive air pressure in the first accommodating chamber is reduced, which is conducive to improving the reliability of the battery transportation protection device in transporting batteries. At the same time, by arranging the pressure relief channel inside the box cover, that is, arranging the pressure relief channel above the first accommodating chamber, the pressure relief channel and the box body share the same floor space, which is conducive to reducing the horizontal size of the battery transportation protection device and facilitating the spatial arrangement of the battery transportation protection device during transportation.

[0008] In some embodiments, a second accommodating cavity is formed inside the box cover, and the battery transportation protection device also includes a pressure relief module, which is arranged in the second accommodating cavity. A smoke inlet and a smoke outlet are respectively provided at both ends of the pressure relief module. A pressure relief channel is formed inside the pressure relief module, and the pressure relief channel connects the smoke inlet and the smoke outlet.

[0009] The technical solution of the embodiment of the present application defines a pressure relief channel by arranging a pressure relief module inside the box cover, thereby reducing the risk of excessive air pressure in the first accommodating chamber, and helping to improve the reliability of the battery transportation protection device in transporting batteries.

[0010] In some embodiments, there are multiple pressure relief modules, arranged in two rows. The two rows of pressure relief modules are spaced apart along the second direction. The multiple pressure relief modules in each row are arranged along the first direction, and the first and second directions are perpendicular to the direction of gravity. The smoke inlet of each row of pressure relief modules is located at an end proximal to the other row of pressure relief modules, and the smoke outlet of each row of pressure relief modules is located at an end distal to the other row of pressure relief modules.

[0011] The technical solution of the embodiment of the present application is to arrange the smoke inlets of the two rows of pressure relief modules relative to each other so that the gas in the first accommodating chamber can be discharged from the middle of the two rows of pressure relief modules at the same time, which is beneficial to improving the efficiency of exhausting the gas, reducing the risk of excessive air pressure in the first accommodating chamber, and improving the reliability of the battery transportation protection device in transporting batteries.

[0012] In some embodiments, the fire fighting mechanism further comprises an air collecting hood, which is disposed between the two rows of pressure relief modules and connected to the plurality of pressure relief modules. The interior space of the air collecting hood is connected to the first accommodating chamber and the plurality of smoke inlets.

[0013] The technical solution of the embodiment of the present application is to set up a gas collecting hood to connect the connecting hole and the smoke inlet, so that the gas in the first accommodating chamber can be collected in the gas collecting hood, which is convenient for the pressure relief module to discharge the gas from the first accommodating chamber, thereby reducing the risk of excessive air pressure in the first accommodating chamber, and helping to improve the reliability of the battery transportation protection device in transporting batteries.

[0014] In some embodiments, there are two gas collecting hoods, and the two gas collecting hoods are respectively connected to two rows of pressure relief modules.

[0015] The technical solution of the embodiment of the present application is to set up two air collecting hoods to connect two rows of pressure relief modules respectively, that is, the two rows of pressure relief modules are not directly connected, so that the two rows of pressure relief modules can be maintained separately, thereby improving the convenience of pressure relief module maintenance.

[0016] In some embodiments, the pressure relief module includes a shell and a filter element. The internal space of the shell forms a pressure relief channel, and the filter element is disposed in the pressure relief channel.

[0017] According to the technical solution of the embodiment of the present application, when a battery generates gas due to thermal runaway, the gas usually contains toxic gases and solid impurities in the battery. By providing a filter in the pressure relief channel to filter the gas in the pressure relief channel, the risk of the discharged gas polluting the environment and causing losses can be reduced.

[0018] In some embodiments, the filter element includes a stainless steel fiber filter, a glass fiber filter, and a ceramic fiber filter. The stainless steel fiber filter, the glass fiber filter, and the ceramic fiber filter are arranged in sequence along the flow direction of the gas in the pressure relief channel.

[0019] According to the technical solution of the embodiment of the present application, the temperature of the gas generated when the battery thermally runs away is relatively high, wherein the stainless steel limit filter can withstand relatively high temperatures. A stainless steel fiber filter, a glass fiber filter, and a ceramic fiber filter are sequentially arranged along the flow direction of the gas in the pressure relief channel to filter out toxic gases and solid impurities in the battery, thereby improving the reliability of the filter element and reducing the impact of the discharged gas on the outside world.

[0020] In some embodiments, the pressure relief module further includes a guide plate, which is disposed in the shell.

[0021] The technical solution of the embodiment of the present application is to reduce the flow rate of the gas in the pressure relief channel by arranging a guide plate in the shell, increase the contact time between the gas passing through the pressure relief channel and the filter element, which is beneficial to improving the filtering effect of the filter element and reducing the impact of the discharged gas on the outside world.

[0022] In some embodiments, the battery transport protection device further includes a detection member and a fire-fighting mechanism. The detection member is disposed within the box body and is configured to detect environmental parameters within the first receiving chamber. The fire-fighting mechanism is connected to the box lid and is configured to release a fire-fighting medium into the first receiving chamber when the environmental parameters exceed a threshold.

[0023] According to the technical solution of the embodiment of the present application, when transporting the battery, the battery is accommodated in the first accommodating cavity of the box. When the battery thermally runs away or catches fire, it may be accompanied by an increase in temperature, the generation of combustible gas, and an increase in the air pressure in the first accommodating cavity. By setting a detection part to detect the environmental parameters (temperature, concentration of combustible gas, air pressure, etc.) in the first accommodating cavity, when the environmental parameters detected by the detection part exceed the threshold value, a fire-fighting medium is released into the first accommodating cavity through a fire-fighting mechanism. The fire-fighting medium has good heat insulation and fire suppression properties. The fire-fighting medium contacts the battery to extinguish the fire (extinguishing the fire, cooling, etc.) of the battery, reducing the risk of losses (casualties, property losses) caused by battery fires, and helping to improve the reliability of the battery transportation protection device for transporting batteries. At the same time, by connecting the fire-fighting mechanism to the box cover, when the battery is accommodated in the first accommodating cavity, the fire-fighting mechanism is located above the battery. When the battery thermally runs away, the fire-fighting medium can fall under the action of gravity to contact the battery, reducing the risk of losses caused by battery fires, and helping to improve the reliability of the battery transportation protection device for transporting batteries.

[0024] In some embodiments, the fire-fighting mechanism is located above the first accommodating cavity and is configured to be switchable between a first state and a second state. In the first state, the fire-fighting mechanism carries the fire-fighting medium; in the second state, the fire-fighting mechanism releases the fire-fighting medium.

[0025] The technical solution of the embodiment of the present application is to arrange the fire-fighting mechanism above the first accommodating cavity. In the first state, the fire-fighting mechanism carries the fire-fighting medium. In the second state, the fire-fighting mechanism releases the fire-fighting medium, so that the fire-fighting medium can fall under the action of gravity to contact the battery, thereby reducing the risk of loss caused by battery fire and helping to improve the reliability of the battery transportation protection device in transporting batteries.

[0026] In some embodiments, the firefighting mechanism includes a first support plate configured to rotate about a first axis extending perpendicular to the direction of gravity. In a first state, the first support plate is horizontal to support the firefighting medium. In a second state, the first support plate is vertical or tilted to release the firefighting medium.

[0027] The technical solution of the embodiment of the present application realizes the bearing and release of the fire-fighting medium by providing a rotating first support plate, thereby reducing the risk of loss caused by battery fire and helping to improve the reliability of the battery transportation protection device in transporting batteries.

[0028] In some embodiments, the firefighting mechanism further comprises a second support plate, the second support plate being fixed relative to the box body and in a horizontal position to carry the firefighting medium, the first support plate being rotatably connected to the second support plate, and the detection member being disposed on the second support plate.

[0029] The technical solution of the embodiment of the present application improves the convenience of installing the first support plate by providing a second support plate for fixing the first support plate. Furthermore, the firefighting medium is supported by both the first and second support plates, thereby improving the reliability of the firefighting medium. Furthermore, the detection element is mounted on the second support plate. Since the second support element is fixed to the housing, the detection element is fixed, thereby improving the reliability of the detection element installation.

[0030] In some embodiments, the environmental parameter includes at least one of temperature, combustible gas concentration, and gas pressure.

[0031] According to the technical solution of the embodiment of the present application, thermal runaway of the battery is accompanied by temperature rise, release of combustible gases (H2, CO, etc.), etc., and the released gases change the air pressure in the first accommodating cavity. At least one of the temperature, combustible gas concentration and air pressure is detected by the detection component, which is conducive to quickly discovering whether the transported battery has thermal runaway, reducing the risk of loss caused by battery fire, and improving the reliability of the battery transportation protection device in transporting batteries.

[0032] In some embodiments, the firefighting medium comprises fire retardant microbeads.

[0033] The flame-retardant microbeads of the present invention have good heat absorption properties and can expand to form a physical flame-retardant layer in high-temperature environments. Furthermore, the flame-retardant microbeads are highly lightweight. By using the flame-retardant microbeads as a firefighting medium, the risk of battery fire damage is reduced, thereby improving the reliability of the battery transport protection device while also reducing the weight of the battery transport protection device.

[0034] In some embodiments, the flame retardant microbeads include at least one of glass microbeads, ceramic microbeads, and mineral microbeads.

[0035] The technical solution of the embodiment of the present application reduces the risk of losses caused by battery fire by using at least one of glass microbeads, ceramic microbeads, and mineral microbeads as a fire-fighting medium, which is beneficial to improving the reliability of battery transportation protection devices and reducing the quality of battery transportation protection devices.

[0036] In some embodiments, the box cover includes a box cover frame, a first thermal insulation lining and a second thermal insulation lining. The box cover frame supports the pressure relief module. The first thermal insulation lining and the second thermal insulation lining are both connected to the box cover frame. The first thermal insulation lining is arranged around the pressure relief module, and the second thermal insulation lining is arranged above the pressure relief module. The first thermal insulation lining and the second thermal insulation lining enclose to form a second accommodating cavity.

[0037] The technical solution of the embodiment of the present application improves the reliability of the pressure relief module by providing a cover frame to support the pressure relief module. By providing a first and second thermal insulation lining around and above the pressure relief module, the cover has better thermal insulation properties, reducing the impact of high-temperature gas on the cover's outer surface when discharging hot gas.

[0038] In some embodiments, the material of the first thermal insulation liner includes aerogel; the material of the second thermal insulation liner includes aerogel.

[0039] According to the technical solution of the embodiment of the present application, aerogel has good thermal insulation performance and low density. By setting aerogel as the material of the first thermal insulation lining and the second thermal insulation lining, the box cover has good thermal insulation performance, and at the same time it is beneficial to reduce the mass of the battery transportation protection device.

[0040] In some embodiments, the box cover further includes a box cover outer plate, which is connected to the box cover frame and is arranged around the pressure relief module. The box cover outer cover is located on the outside of the first thermal insulation lining.

[0041] The technical solution of the embodiment of the present application reduces the risk of the first thermal insulation lining being damaged and thus affecting the thermal insulation performance of the box cover by arranging a box cover outer panel on the outside of the first thermal insulation lining, which is conducive to improving the reliability of the box cover.

[0042] In some embodiments, the first thermal insulation lining is provided with a first pressure relief port, the outer panel of the box cover is provided with a second pressure relief port corresponding to the first pressure relief port, and the first pressure relief port is connected to the second pressure relief port and the pressure relief channel.

[0043] The technical solution of the embodiment of the present application is beneficial to improving the convenience of discharging the gas in the first accommodating chamber by providing the first pressure relief port and the second pressure relief port to communicate with the pressure relief channel.

[0044] In some embodiments, the box cover further includes a box cover top plate, which is connected to the box cover frame and is located on a side of the second thermal insulation liner facing away from the pressure relief module.

[0045] The technical solution of the embodiment of the present application reduces the risk of the second thermal insulation lining being damaged and thus affecting the thermal insulation performance of the box cover by arranging a box cover top plate on the outer side of the second thermal insulation lining, which is conducive to improving the reliability of the box cover.

[0046] In some embodiments, the box body includes side walls and a bottom wall, the bottom wall being disposed opposite the box lid, the side walls surrounding the bottom wall, the lower ends of the side walls connected to the bottom wall, and the upper ends of the side walls connected to the box lid. The side walls include a side wall lining, a side wall outer shell, and a first flame-retardant thermal insulation layer, the first flame-retardant thermal insulation layer being located between the side wall lining and the side wall outer shell.

[0047] The technical solution of the embodiment of the present application provides a first flame-retardant insulation layer between the side wall lining and the side wall outer shell, so that the box body has better thermal insulation properties, and reduces the impact of temperature on the outer surface of the box body when the battery thermal runaway occurs.

[0048] In some embodiments, the first flame-retardant thermal insulation layer includes a first sub-flame-retardant thermal insulation layer and a second sub-flame-retardant thermal insulation layer, wherein the second sub-flame-retardant thermal insulation layer is located between the sidewall lining and the first sub-flame-retardant thermal insulation layer. The thermal conductivity of the second sub-flame-retardant thermal insulation layer is less than that of the first sub-flame-retardant thermal insulation layer.

[0049] The technical solution of the embodiment of the present application is to achieve gradient insulation in which the insulation performance of the box body gradually increases from the outside to the inside by arranging the second sub-flame retardant insulation layer on the inner side of the first sub-flame retardant insulation layer, and the thermal conductivity of the second sub-flame retardant insulation layer is smaller than the thermal conductivity of the first sub-flame retardant insulation layer, so that the arrangement of the first flame retardant insulation layer is more reasonable.

[0050] In some embodiments, the first sub-fire retardant thermal insulation layer comprises aerogel, and the second sub-fire retardant thermal insulation layer comprises fiber fire-resistant material.

[0051] According to the technical solution of the embodiment of the present application, the density of the aerogel is low and the thermal conductivity of the fiber refractory material is low. By setting the aerogel as the first sub-flame retardant thermal insulation layer and the fiber refractory material as the second sub-flame retardant thermal insulation layer, gradient insulation is achieved in which the thermal insulation performance of the box body gradually increases from the outside to the inside, making the arrangement of the first flame retardant thermal insulation layer more reasonable and helping to reduce the mass of the battery transportation protection device.

[0052] In some embodiments, the bottom wall includes a bottom wall lining, a bottom wall outer shell, and a second flame retardant insulation layer, wherein the second flame retardant insulation layer is located between the bottom wall lining and the bottom wall outer shell.

[0053] The technical solution of the embodiment of the present application provides a second flame-retardant insulation layer between the bottom wall lining and the bottom wall outer shell, so that the box body has better thermal insulation properties, and reduces the impact of temperature on the outer surface of the box body when the battery thermal runaway occurs.

[0054] In some embodiments, the second flame-retardant thermal insulation layer includes a third sub-flame-retardant thermal insulation layer and a fourth sub-flame-retardant thermal insulation layer, wherein the third sub-flame-retardant thermal insulation layer is located between the bottom wall lining and the fourth sub-flame-retardant thermal insulation layer. The thermal conductivity of the third sub-flame-retardant thermal insulation layer is less than the thermal conductivity of the fourth sub-flame-retardant thermal insulation layer.

[0055] The technical solution of the embodiment of the present application is to achieve gradient insulation in which the insulation performance of the box body gradually increases from the outside to the inside by arranging the third sub-flame retardant insulation layer on the inner side of the fourth sub-flame retardant insulation layer, and the thermal conductivity of the third sub-flame retardant insulation layer is smaller than the thermal conductivity of the fourth sub-flame retardant insulation layer, so that the arrangement of the second flame retardant insulation layer is more reasonable.

[0056] In some embodiments, the third sub-flame retardant thermal insulation layer includes a fibrous fire-resistant material, and the fourth sub-flame retardant thermal insulation layer includes aerogel.

[0057] The technical solution of the embodiment of the present application realizes gradient insulation in which the insulation performance of the box body gradually increases from the outside to the inside by arranging aerogel as the fourth sub-flame-retardant insulation layer and arranging fiber refractory material as the third sub-flame-retardant insulation layer, so that the arrangement of the second flame-retardant insulation layer is more reasonable, and at the same time it is beneficial to reduce the mass of the battery transportation protection device.

[0058] In some embodiments, the first flame-retardant thermal insulation layer includes a first sub-flame-retardant thermal insulation layer and a second sub-flame-retardant thermal insulation layer, wherein the second sub-flame-retardant thermal insulation layer is located between the sidewall lining and the first sub-flame-retardant thermal insulation layer. The first sub-flame-retardant thermal insulation layer is made of the same material as the fourth sub-flame-retardant thermal insulation layer, and the fourth sub-flame-retardant thermal insulation layer is thicker than the first sub-flame-retardant thermal insulation layer. The second sub-flame-retardant thermal insulation layer is made of the same material as the third sub-flame-retardant thermal insulation layer, and the third sub-flame-retardant thermal insulation layer is thicker than the second sub-flame-retardant thermal insulation layer.

[0059] According to the technical solution of the embodiment of the present application, when the battery thermal runaway occurs, the generated high-temperature substances will be collected at the bottom of the box body under the action of gravity. By setting the material of the first sub-flame-retardant thermal insulation layer to be the same as the material of the fourth sub-flame-retardant thermal insulation layer, setting the material of the second sub-flame-retardant thermal insulation layer to be the same as the material of the third sub-flame-retardant thermal insulation layer, and setting the thickness of the fourth sub-flame-retardant thermal insulation layer to be greater than the thickness of the first sub-flame-retardant thermal insulation layer, and setting the thickness of the third sub-flame-retardant thermal insulation layer to be greater than the thickness of the second sub-flame-retardant thermal insulation layer, the thermal conductivity of the bottom wall is lower than that of the side walls, making the bottom wall have better thermal insulation properties, and reducing the impact of temperature on the outer surface of the bottom wall when the battery thermal runaway occurs.

[0060] In some embodiments, the box body further includes a box body frame, and the side walls and the bottom wall are both connected to the box body frame.

[0061] The technical solution of the embodiment of the present application is to provide a box body frame for connecting the side walls and the bottom wall, which is beneficial to improving the reliability of the pressure relief module setting.

[0062] In some embodiments, the box cover includes a box cover frame, and the battery transport protection device includes a first connecting frame and a second connecting frame. The first connecting frame is connected to the box body frame, the first connecting frame enclosing a first opening, and the second connecting frame is connected to the box cover frame. One of the first connecting frame and the second connecting frame has an outer circumference that is an inclined surface, and the inner circumference of the other is an inclined surface, and the outer circumference and the inner circumference are matingly connected.

[0063] The technical solution of the embodiment of the present application realizes the connection between the box cover and the box body by cooperating the inclined surface of the first connecting frame and the inclined surface of the second connecting frame, and can limit the box cover and the box body in the horizontal direction, which is beneficial to improving the reliability of the connection between the box cover and the box body. At the same time, the two inclined surfaces are connected to facilitate the positioning and installation of the box cover and the box body when they are connected.

[0064] In some embodiments, a first positioning portion is provided on the top of the box body, and a second positioning portion matching the first positioning portion is provided on the bottom of the box body, so that two battery transport protection devices are stacked along the direction of gravity.

[0065] The technical solution of the embodiment of the present application facilitates the stacking of two battery transportation protection devices by providing a first positioning portion and a second positioning portion to improve the convenience of battery transportation.

[0066] In some embodiments, the height of the battery transport protection device is h, which satisfies 700 mm ≤ h ≤ 1300 mm.

[0067] According to the technical solution of the embodiment of the present application, the height of the battery transport protection device meets the above conditions. On the one hand, it can accommodate more batteries, and on the other hand, it is convenient to place the battery transport protection device on a transportation vehicle for transportation.

[0068] Additional aspects and advantages of the present application will be given in part in the description below, and in part will become obvious from the description below, or will be learned through practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0069] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following is a brief introduction to the drawings required for use in the embodiments. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without creative work.

[0070] Figure 1 An exploded view of the structure of a battery transport protection device provided in some embodiments of the present application;

[0071] Figure 2 A schematic diagram of a box cover provided in some embodiments of the present application;

[0072] Figure 3 A schematic diagram of the exploded structure of the box cover provided in some embodiments of the present application;

[0073] Figure 4 A schematic diagram of a fire fighting mechanism in a first state provided for some embodiments of the present application;

[0074] Figure 5 for Figure 4 Enlarged view of point A in the middle;

[0075] Figure 6 A schematic diagram of a fire fighting mechanism in a second state provided for some embodiments of the present application;

[0076] Figure 7 for Figure 6 Enlarged view of point B in the middle;

[0077] Figure 8 A schematic diagram of a pressure relief module provided in some embodiments of the present application;

[0078] Figure 9 A schematic structural diagram of a pressure relief module provided in some embodiments of the present application;

[0079] Figure 10 A schematic diagram of a filter element provided in some embodiments of the present application;

[0080] Figure 11 An exploded view of the box body provided in some embodiments of the present application;

[0081] Figure 12 A schematic diagram of a box body skeleton provided in some embodiments of the present application;

[0082] Figure 13for Figure 1 Enlarged view of point C in the middle;

[0083] Figure 14 Schematic diagram of a battery transport protection device provided in some embodiments of the present application.

[0084] Icons: 1-battery transport protection device; 10-box body; 11-first accommodating chamber; 12-box cover; 121-pressure relief channel; 122-second accommodating chamber; 123-box cover frame; 124-first thermal insulation lining; 1241-first pressure relief port; 125-second thermal insulation lining; 126-box cover outer plate; 1261-second pressure relief port; 127-box cover top plate; 128-first lifting part; 13-box body; 131-side wall; 1311- Side wall lining; 1312 - side wall shell; 1313 - first flame-retardant insulation layer; 1313a - first sub-flame-retardant insulation layer; 1313b - second sub-flame-retardant insulation layer; 132 - bottom wall; 1321 - bottom wall lining; 1322 - bottom wall shell; 1323 - second flame-retardant insulation layer; 1323a - third sub-flame-retardant insulation layer; 1323b - fourth sub-flame-retardant insulation layer; 133 - first opening; 134 - box body frame; 20 - detection component; 30-firefighting mechanism; 31-connecting hole; 32-first support plate; 33-first locking member; 34-driving member; 35-second support plate; 36-second opening; 37-linking shaft; 38-mounting seat; 39-second locking member; 391-locking hole; 40-pressure relief module; 41-smoke inlet; 42-smoke outlet; 43-housing; 44-filter element; 441-stainless steel fiber filter; 442-glass fiber filter; 443-ceramic fiber Filter; 45-deflector; 50-firefighting medium; 60-gas collecting hood; 70-first connecting frame; 71-second connecting frame; 80-seal; 90-locking buckle; 91-bracket; 92-bracket; 921-strap ring; 922-bracket body; 923-support plate; 93-locking mechanism; 94-first positioning part; 941-second positioning part; 95-forklift hole; O-first axis; X-first direction; Y-second direction; Z-gravity direction. DETAILED DESCRIPTION

[0085] To make the purpose, technical solutions, and advantages of the embodiments of this application more clear, the technical solutions in the embodiments of this application will be clearly and completely described below in conjunction with the drawings in the embodiments of this application. Obviously, the described embodiments are part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0086] Unless otherwise defined, all technical and scientific terms used in this application have the same meanings as commonly understood by those skilled in the art to which this application belongs. The terms used in the specification of this application are only for the purpose of describing specific embodiments and are not intended to limit this application. The terms "including" and "having" and any variations thereof in the specification and claims of this application and the above-mentioned drawings are intended to cover non-exclusive inclusions. The terms "first" and "second" in the specification and claims of this application or the above-mentioned drawings are used to distinguish different objects, rather than to describe a specific order or a primary-secondary relationship.

[0087] References to "embodiments" in this application mean that a particular feature, structure, or characteristic described in connection with the embodiment may be included in at least one embodiment of the application. The appearance of this phrase in various places in the specification does not necessarily refer to the same embodiment, nor does it constitute an independent or alternative embodiment that is mutually exclusive of other embodiments. It is understood, both explicitly and implicitly, by those skilled in the art that the embodiments described in this application may be combined with other embodiments.

[0088] In the description of this application, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," "connected," and "attached" should be understood in a broad sense. For example, they may refer to fixed connections, detachable connections, or integral connections; they may refer to direct connections, indirect connections through an intermediate medium, or internal connections between two components. Those skilled in the art will understand the specific meanings of the above terms in this application based on specific circumstances.

[0089] In this application, the term "and / or" simply describes the relationship between related objects, indicating that three possible relationships exist. For example, "A and / or the second direction" can represent: A exists alone, A and the second direction exist simultaneously, and the second direction exists alone. In addition, the character " / " in this application generally indicates that the related objects are in an "or" relationship.

[0090] The term "multiple" in this application refers to more than two (including two). Similarly, "multiple groups" refers to more than two groups (including two groups), and "multiple pieces" refers to more than two pieces (including two pieces).

[0091] The battery mentioned in the embodiments of the present application may be a battery device, which may include one or more battery cell assemblies for providing voltage and capacity. The battery cell assembly may include multiple battery cells, which are connected in series, parallel, or hybrid via a busbar.

[0092] In some embodiments, a battery cell assembly is typically formed by arranging multiple battery cells. For example, the battery cell assembly may be a battery module, which is formed by arranging and securing multiple battery cells to form a single module. For example, a battery module may be formed by bundling multiple battery cells using cable ties.

[0093] In some embodiments, the battery may be a battery pack, which includes a battery case and one or more battery cell assemblies, wherein the battery cell assemblies are housed in the battery case.

[0094] As an example, the battery cell assembly may be a battery module, and the battery cell assembly may be accommodated in the battery case by fixing the battery module in the battery case.

[0095] As an example, the battery cell assembly may also be housed in the battery case by directly fixing a plurality of battery cells to the battery case.

[0096] As an example, a battery case may include a first battery case and a second battery case. The first and second battery cases engage to form an enclosed space within the battery case to house the battery cell assembly. Enclosed here means covered or closed, and can be either sealed or unsealed. The first battery case may be a top cover or a bottom plate.

[0097] As an example, the battery case may include a top cover, a frame, and a bottom plate, wherein the top cover and the bottom plate are respectively connected to the frame to form a closed space inside the battery case to accommodate the battery cell assembly.

[0098] In the embodiment of the present application, the battery cell may be a secondary battery. A secondary battery refers to a battery cell that can be continuously used by activating active materials by charging after the battery cell is discharged.

[0099] The battery cells may be, but are not limited to, lithium-ion batteries, sodium-ion batteries, sodium-lithium-ion batteries, lithium metal batteries, sodium metal batteries, lithium-sulfur batteries, magnesium-ion batteries, nickel-hydrogen batteries, nickel-cadmium batteries, lead-acid batteries, and the like.

[0100] The development of battery technology must consider multiple design factors at the same time, such as energy density, cycle life, discharge capacity, charge and discharge rate and other performance parameters. In addition, during the battery transportation process, improving the reliability of battery transportation protection devices is also one of the key considerations.

[0101] Batteries are typically transported in battery transport protective devices. During transportation, batteries may catch fire due to various reasons, such as thermal runaway or collision. A battery fire generates gas, which accumulates within the battery transport protective device, increasing the pressure inside. This may cause an explosion or force the device to open, resulting in damage and affecting the reliability of the battery transport protective device in transporting batteries.

[0102] Based on the above considerations, and to address the issue of battery fires, which in turn affects the reliability of battery transportation using a battery transport protection device, embodiments of the present application provide a battery transport protection device. The device comprises a housing, which includes a lid and a body. The body has a first opening, and the lid engages with the first opening to define, together with the body, a first accommodating chamber for accommodating the battery. A pressure relief channel is formed within the lid, communicating with the first accommodating chamber to discharge gas from the first accommodating chamber.

[0103] By providing a pressure relief channel to discharge gas generated by the battery, the risk of excessive pressure within the first accommodating chamber is reduced, thereby improving the reliability of the battery transport protection device in transporting batteries. Furthermore, by locating the pressure relief channel inside the box lid, that is, above the first accommodating chamber, the pressure relief channel and the box body share the same footprint, which helps reduce the horizontal size of the battery transport protection device and facilitates the spatial arrangement of the battery transport protection device during transportation.

[0104] The technical solutions described in the embodiments of the present application can be used for the transportation of batteries, such as normal battery transportation, or the recycling of used batteries.

[0105] Please refer to Figures 1 to 3 、 Figure 8 and Figure 9 , Figure 1 This is a structural exploded view of a battery transport protection device provided in some embodiments of the present application. Figure 2 Schematic diagram of a box cover provided in some embodiments of the present application, Figure 3 This is a schematic diagram of the structure of the box cover provided in some embodiments of the present application. Figure 8 Schematic diagram of a pressure relief module provided in some embodiments of the present application, Figure 9 This is a schematic diagram of the structure of the pressure relief module provided in some embodiments of the present application. In order to facilitate the display of the pressure relief channel, Figure 9Part of the housing of the pressure relief module is hidden in the housing. An embodiment of the present application provides a battery transport protection device 1, which includes a box body 10, which includes a box cover 12 and a box body 13. The box body 13 has a first opening 133, and the box cover 12 covers the first opening 133 to define, together with the box body 13, a first accommodating chamber 11 for accommodating batteries. A pressure relief channel is formed inside the box cover 12, which is connected to the first accommodating chamber 11 and is used to discharge gas from the first accommodating chamber 11.

[0106] In some embodiments, the outer shell of the box body 10 may be made of metal, or both the outer shell and the inner shell of the box body 10 may be made of metal.

[0107] In addition, the outer shell and the inner liner of the box body 10 can both be made of metal, and a heat-insulating material can be provided between the outer shell and the inner liner.

[0108] Batteries in high-temperature environments or when impacted can easily cause thermal runaway, leading to fire. In some embodiments, the battery can be placed in the first accommodating cavity 11 of the box 10 to protect the battery, reduce contact with the outside world during transportation, and isolate the battery from the effects of external temperatures, thereby reducing the risk of thermal runaway.

[0109] In some embodiments, when a battery experiences thermal runaway, the housing 10 holds the battery within the first housing cavity 11. When the battery experiences thermal runaway and causes a fire, the housing 10 can also isolate the battery from the external environment, reducing the risk of property damage and casualties caused by the battery. When transporting batteries, multiple battery transport protection devices 1 may be transported together. If a battery in one of the battery transport protection devices 1 catches fire, the risk of the fire affecting batteries in other battery transport protection devices 1 can be reduced, reducing the risk of further spread of damage.

[0110] In some embodiments, a first opening 133 may be formed above the box body 13 , through which the battery enters the box body 13 , and the box cover 12 covers the first opening 133 , so that the battery is accommodated in the first accommodation cavity 11 .

[0111] In some embodiments, the pressure relief channel 121 may communicate with the first accommodating chamber 11 and the outside of the box body 10 .

[0112] In some embodiments, a pressure relief channel 121 connecting the first accommodating cavity 11 and the outside of the box body 10 can be formed inside the box cover 12. The pressure relief channel 121 can be formed by integral molding, or the box cover 12 can be processed first and then the pressure relief channel 121 can be processed by milling.

[0113] In some embodiments, a receiving cavity may be provided inside the box cover 12 , a component for exhausting gas may be provided inside the receiving cavity, a pressure relief channel 121 may be provided inside the exhausting component, and the pressure relief channel 121 may connect the first receiving cavity 11 and the outside of the box body 10 .

[0114] According to the technical solution of the embodiment of the present application, thermal runaway of the battery is usually accompanied by gas generation. The accumulation of gas in the first accommodating chamber 11 will cause the air pressure in the first accommodating chamber 11 to increase, and there may be a risk of explosion or the box cover 12 being pushed open, thereby causing losses. By providing a pressure relief channel to discharge the gas generated by the battery, the risk of excessive air pressure in the first accommodating chamber 11 is reduced, which is conducive to improving the reliability of the battery transportation protection device 1 in transporting batteries. At the same time, by arranging the pressure relief channel inside the box cover 12, that is, the pressure relief channel is arranged above the first accommodating chamber 11, the pressure relief channel and the box body 13 share the same floor space, which is conducive to reducing the horizontal size of the battery transportation protection device 1 and facilitating the spatial arrangement of the battery transportation protection device 1 during transportation.

[0115] Please refer to Figures 1 to 3 , Figure 8 and Figure 9 In some embodiments, a second accommodating cavity 122 is formed inside the box cover 12, and the battery transportation protection device 1 further includes a pressure relief module 40, which is arranged in the second accommodating cavity 122. The two ends of the pressure relief module 40 are respectively provided with a smoke inlet 41 and a smoke outlet 42. A pressure relief channel 121 is formed inside the pressure relief module 40, and the pressure relief channel 121 connects the smoke inlet 41 and the smoke outlet 42.

[0116] In some embodiments, the pressure relief module 40 may be made of metal.

[0117] In some embodiments, a smoke inlet 41 and a smoke outlet 42 may be provided at both ends of the pressure relief module 40. A pressure relief channel 121 is formed inside the pressure relief module 40. The smoke inlet 41 connects the first accommodating chamber 11 and the pressure relief channel 121, and the smoke outlet 42 connects the pressure relief channel 121 and the exterior of the housing 10. When a battery fire occurs, the generated gas is discharged from the first accommodating chamber 11 through the smoke inlet 41, the pressure relief channel 121, and the smoke outlet 42, in sequence, out of the housing 10.

[0118] In some embodiments, the pressure relief module 40 may be enclosed by several plates to form the pressure relief channel 121 , or the pressure relief module 40 may be a solid metal block with the pressure relief channel 121 machined inside.

[0119] The technical solution of the embodiment of the present application is to set a pressure relief module inside the box cover 12 to define a pressure relief channel, thereby reducing the risk of excessive air pressure in the first accommodating chamber 11, which is beneficial to improving the reliability of the battery transportation protection device 1 in transporting batteries.

[0120] Please refer to Figure 3 and Figure 8 In some embodiments, there are multiple pressure relief modules 40 , arranged in two rows. The two rows of pressure relief modules 40 are spaced apart along the second direction Y. The multiple pressure relief modules 40 in each row of pressure relief modules 40 are arranged along the first direction X, and the first direction X, the second direction Y, and the gravity direction Z are perpendicular to each other. The smoke inlet 41 of each row of pressure relief modules 40 is located at one end close to the other row of pressure relief modules 40, and the smoke outlet 42 of each row of pressure relief modules 40 is located at one end away from the other row of pressure relief modules 40.

[0121] In some embodiments, the first direction may be represented by the direction indicated by the letter X in the figure, the second direction may be represented by the direction indicated by the letter Y in the figure, and the direction of gravity may be represented by the direction indicated by the letter Z in the figure.

[0122] In some embodiments, the gravity direction Z may be parallel to the height direction of the box body 10 , the first direction X may be parallel to the length direction of the box body 10 , and the second direction Y may be parallel to the width direction of the box body 10 .

[0123] Alternatively, the gravity direction Z may be parallel to the height direction of the box body 10 , the first direction X may be parallel to the width direction of the box body 10 , and the second direction Y may be parallel to the length direction of the box body 10 .

[0124] In some embodiments, the number of pressure relief modules 40 in the two rows of pressure relief modules 40 may be the same or different.

[0125] In some embodiments, the number of pressure relief modules 40 in the two rows of pressure relief modules 40 is the same. When the two rows of pressure relief modules 40 are projected onto a projection plane perpendicular to the second direction Y, the orthographic projections of the two rows of pressure relief modules 40 overlap.

[0126] In the second direction Y, each pressure relief module 40 in one column of pressure relief modules 40 is disposed in a one-to-one correspondence with each pressure relief module 40 in another column of pressure relief modules 40 .

[0127] Taking two corresponding pressure relief modules 40 as an example, the smoke inlet 41 of one pressure relief module 40 is set at one end facing the other pressure relief module 40 , and the smoke outlet 42 of one pressure relief module 40 is set at one end away from the other pressure relief module 40 .

[0128] When the battery catches fire, the generated smoke and gas enter the second accommodating chamber 122 from the first accommodating chamber 11 and are discharged from between the two pressure relief modules 40 by the two pressure relief modules 40 .

[0129] Similarly, when the battery catches fire, the smoke and gas generated enter the second accommodating chamber 122 from the first accommodating chamber 11 and are discharged from the two pressure relief modules 40 between the two rows of pressure relief modules 40 respectively.

[0130] The technical solution of the embodiment of the present application is to arrange the smoke inlets 41 of the two rows of pressure relief modules 40 relative to each other, so that the gas in the first accommodating chamber 11 can be discharged from the middle from the two rows of pressure relief modules 40 at the same time, which is beneficial to improving the efficiency of exhausting gas, reducing the risk of excessive air pressure in the first accommodating chamber 11, and improving the reliability of the battery transportation protection device 1 in transporting batteries.

[0131] Please refer to Figure 3 、 Figure 8 and Figure 9 In some embodiments, the battery transport protection device 1 further includes an air collecting hood 60 , which is disposed between two rows of pressure relief modules 40 and connected to the plurality of pressure relief modules 40 . The interior space of the air collecting hood 60 communicates with the first accommodating chamber 11 and the plurality of smoke inlets 41 .

[0132] In some embodiments, the gas collecting cover 60 may be made of metal.

[0133] In some embodiments, there can be only one gas collecting hood 60 , which has a cavity with multiple openings, one opening being connected to the first accommodating cavity 11 , and the other openings being connected to the smoke inlets 41 of the two rows of pressure relief modules 40 .

[0134] In some embodiments, there may be two gas collecting hoods 60, each of which is connected to the two rows of pressure relief modules 40. The gas collecting hood 60 may have multiple openings, one of which is connected to the gap between the two rows of pressure relief modules 40, and the other openings are connected to the smoke inlets 41 of the pressure relief modules 40.

[0135] The pressure relief modules 40 arranged along the second direction Y form a row of pressure relief modules 40, wherein a gap may exist between two adjacent pressure relief modules 40. After the gas enters the second accommodating chamber 122 from the first accommodating chamber 11, it may be dispersed into the gap between the two adjacent pressure relief modules 40, affecting the discharge of the gas. Therefore, a gas collecting hood 60 is provided. When a battery fire occurs, the gas in the first accommodating chamber 11 enters the gap between the two rows of pressure relief modules 40 and is collected in the cavity of the gas collecting hood 60, or directly collected in the cavity of the gas collecting hood 60 from the first accommodating chamber 11 and discharged through the pressure relief channel 121, thereby reducing the risk of the gas being dispersed into the gap between the two adjacent pressure relief modules 40 and affecting the discharge of the gas.

[0136] The technical solution of the embodiment of the present application is to provide an air collecting hood 60 to connect the first accommodating chamber 11 and the smoke inlet 41, so that the gas in the first accommodating chamber 11 can be collected in the air collecting hood 60, which facilitates the pressure relief module 40 to discharge the gas in the first accommodating chamber 11, thereby reducing the risk of excessive air pressure in the first accommodating chamber 11, and helping to improve the reliability of the battery transportation protection device 1 in transporting batteries.

[0137] Please refer to Figure 8 In some embodiments, there are two gas collecting hoods 60 , and the two gas collecting hoods 60 are respectively connected to two rows of pressure relief modules 40 .

[0138] In some embodiments, there may be two gas collecting hoods 60, which are respectively connected to two rows of pressure relief modules 40. One gas collecting hood 60 is connected to the gap between the two rows of pressure relief modules 40 and the smoke inlets 41 of the two rows of pressure relief modules 40.

[0139] The technical solution of the embodiment of the present application is to set up two air collecting hoods 60 to connect the two rows of pressure relief modules 40 respectively, that is, the two rows of pressure relief modules 40 are not directly connected, so that the two rows of pressure relief modules 40 can be maintained separately, thereby improving the convenience of maintenance of the pressure relief modules 40.

[0140] Please refer to Figure 8 and Figure 9 , and refer to Figure 10 , Figure 10 Schematic diagram of a filter element provided in some embodiments of the present application. In some embodiments, the pressure relief module 40 includes a housing 43 and a filter element 44 . The interior space of the housing 43 forms a pressure relief channel 121 , and the filter element 44 is disposed in the pressure relief channel 121 .

[0141] In some embodiments, the pressure relief module 40 may include a housing 43 , and the housing 43 may be made of metal.

[0142] In some embodiments, the housing 43 may be formed by welding a plurality of plate members, or may be formed by stamping or milling a solid member.

[0143] In some embodiments, a pressure relief channel 121 is formed inside the housing 43 , and a filter element 44 is provided in the pressure relief channel 121 . The filter element 44 may be a filter screen, and a medium for settling and decomposing impurities may also be provided on the filter screen.

[0144] According to the technical solution of the embodiment of the present application, when the battery generates gas due to thermal runaway, the gas usually contains toxic gases and solid impurities in the battery. By setting a filter element 44 in the pressure relief channel 121 to filter the gas in the pressure relief channel 121, it is beneficial to reduce the risk of the discharged gas polluting the environment and causing losses.

[0145] Please refer to Figure 10 In some embodiments, the filter element 44 includes a stainless steel fiber filter 441, a glass fiber filter 442, and a ceramic fiber filter 443. The stainless steel fiber filter 441, the glass fiber filter 442, and the ceramic fiber filter 443 are arranged in sequence along the flow direction of the gas in the pressure relief channel 121.

[0146] In some embodiments, the stainless steel fiber filter 441, the glass fiber filter 442, and the ceramic fiber filter 443 are arranged in sequence along the flow direction of the gas in the pressure relief channel 121, that is, in the direction from the smoke inlet 41 to the smoke outlet 42, so that when the battery catches fire, the gas passes through the stainless steel fiber filter 441, the glass fiber filter 442, and the ceramic fiber filter 443 in sequence.

[0147] According to the technical solution of the embodiment of the present application, the temperature of the gas generated when the battery thermally runs away is relatively high, wherein the stainless steel limiting filter can withstand relatively high temperatures. A stainless steel fiber filter 441, a glass fiber filter 442, and a ceramic fiber filter 443 are sequentially arranged along the flow direction of the gas in the pressure relief channel 121 to filter out toxic gases and solid impurities in the battery, thereby improving the reliability of the filter element 44 and reducing the impact of the discharged gas on the outside world.

[0148] Please refer to Figures 8 to 10 In some embodiments, the pressure relief module 40 further includes a guide plate 45 , which is disposed in the housing 43 .

[0149] In some embodiments, the guide plate 45 is disposed in the housing 43 to reduce the cross-section of the pressure relief channel 121 , thereby reducing the flow rate of the gas.

[0150] In some embodiments, there may be multiple guide plates 45 , which are spaced apart in the direction from the smoke inlet 41 to the smoke outlet 42 , and separate the pressure relief channel 121 into a cavity for accommodating the filter element 44 to facilitate the installation of the filter element 44 .

[0151] Among them, the guide plate 45 is arranged in the shell 43, and a gap can be formed between it and the inner wall of the shell 43, so that the gas flows through the gap. Between two adjacent guide plates 45, the gaps formed between the guide plate 45 and the inner wall of the shell 43 can be staggered. For example, one end of a guide plate 45 in the first direction X forms a gap with the shell 43, and the other end of the other guide plate 45 in the first direction X forms a gap with the shell 43, so that the gas flow path is increased, so that the contact time of the gas with the filter element 44 is increased, which is beneficial to reduce the risk of the discharged gas polluting the environment and causing losses.

[0152] The technical solution of the embodiment of the present application is to set a guide plate 45 in the shell 43 to reduce the flow rate of the gas in the pressure relief channel 121, increase the contact time between the gas passing through the pressure relief channel 121 and the filter element 44, which is beneficial to improving the filtering effect of the filter element 44 and reducing the impact of the discharged gas on the outside world.

[0153] Please refer to Figures 1 to 3 , and refer to Figures 4 to 7 , Figure 4A schematic diagram of a fire fighting mechanism in a first state provided for some embodiments of the present application, Figure 5 for Figure 4 The enlarged view of point A in the middle. Figure 6 A schematic diagram of a fire fighting mechanism in a second state provided for some embodiments of the present application, Figure 7 for Figure 6 Enlarged view of point B in the figure. In some embodiments, the battery transport protective device 1 further includes a detection member 20 and a fire-fighting mechanism 30. The detection member 20 is disposed on the housing 10 and is used to detect environmental parameters within the first receiving chamber 11. The fire-fighting mechanism 30 is connected to the cover 12 and is used to release a fire-fighting medium 50 into the first receiving chamber 11 when the environmental parameters exceed a threshold.

[0154] In some embodiments, the battery transport protection device 1 may include a detection component 20 and a fire-fighting mechanism 30. The detection component 20 is used to detect whether the battery in the box 10 has experienced thermal runaway. When thermal runaway is detected, the fire-fighting mechanism 30 can be controlled to release a fire-fighting medium 50 into the first receiving chamber 11, thereby extinguishing or suppressing the fire.

[0155] The detection element 20 may be provided with a controller that can directly control the fire fighting mechanism 30 according to the detection data. Alternatively, the battery transport protection device 1 may include a controller that controls the fire fighting mechanism 30 according to the detection data after receiving the detection data from the detection element 20 .

[0156] In some embodiments, the detection member 20 may be a sensor that can detect the temperature, air pressure, or gas concentration in the first receiving cavity 11 and determine whether the battery is on fire based on the detected data.

[0157] In some embodiments, the fire-fighting mechanism 30 releases the fire-fighting medium 50 into the first accommodating chamber 11 by providing a power source (such as a motor, pump, etc.) to spray the fire-fighting medium 50 into the first accommodating chamber 11 so that the fire-fighting medium 50 contacts the battery.

[0158] Alternatively, the fire-fighting mechanism 30 may release the carried fire-fighting medium 50 so that the fire-fighting medium 50 enters the first accommodation chamber 11 under the action of gravity, so that the fire-fighting medium 50 contacts the battery.

[0159] In some embodiments, the firefighting medium 50 may be a liquid, such as water, or a solid, such as sand, or a gas, such as carbon dioxide.

[0160] In some embodiments, the fire-fighting mechanism 30 is connected to the box cover 12 so that the fire-fighting mechanism 30 is located above the first accommodating cavity 11 , so that when the battery is placed in the first accommodating cavity 11 , the fire-fighting mechanism 30 can release the fire-fighting medium 50 above the battery.

[0161] According to the technical solution of the embodiment of the present application, when transporting batteries, the batteries are contained in the first accommodating chamber 11 of the box body 10. When the batteries are in thermal runaway or catch fire, the temperature may rise, combustible gas may be generated, and the air pressure in the first accommodating chamber 11 may rise. A detection member 20 is provided to detect the environmental parameters (temperature, concentration of combustible gas, air pressure, etc.) in the first accommodating chamber 11. When the environmental parameters detected by the detection member 20 exceed the threshold value, a fire-fighting medium 50 is released into the first accommodating chamber 11 through the fire-fighting mechanism 30. The fire-fighting medium 50 has good thermal insulation and fire-suppressing properties. The fire-fighting medium 50 contacts the batteries to extinguish the batteries (extinguish fire, cool down, etc.), reduce the risk of losses (personnel casualties, property losses) caused by battery fires, and help improve the reliability of the battery transportation protection device 1 in transporting batteries. At the same time, by connecting the fire-fighting mechanism 30 to the box cover 12, when the battery is accommodated in the first accommodating cavity 11, the fire-fighting mechanism 30 is located above the battery. When the battery thermally runs away, the fire-fighting medium 50 can fall under the action of gravity to contact the battery, thereby reducing the risk of loss caused by battery fire and helping to improve the reliability of the battery transportation protection device 1 in transporting batteries.

[0162] During use, the detection component 20 requires a power supply to provide driving power for the detection component 20. When a battery fire occurs, the temperature in the first accommodating chamber 11 is relatively high, so the power supply is set in the second accommodating chamber 122. The temperature of the gas entering the second accommodating chamber 122 is relatively high. In order to reduce the impact of the gas on the power supply, the gas collecting hood 60, the inner wall surface of the second accommodating chamber 122, and the pressure relief module 40 separate the second accommodating chamber 122 into an accommodating space. The accommodating space and the gap between the two rows of pressure relief modules 40 are not connected to each other to reduce the impact of the gas on the power supply.

[0163] Please refer to Figures 1 to 7 In some embodiments, the fire-fighting mechanism 30 is located above the first accommodating chamber 11 , and the fire-fighting mechanism 30 is configured to be switchable between a first state and a second state. In the first state, the fire-fighting mechanism 30 carries the fire-fighting medium 50 ; in the second state, the fire-fighting mechanism 30 releases the fire-fighting medium 50 .

[0164] In some embodiments, the fire-fighting mechanism 30 may be located above the first accommodating cavity 11 , so that when the fire-fighting mechanism 30 releases the fire-fighting medium 50 , the fire-fighting medium 50 can better contact the battery under the action of gravity.

[0165] In addition, when a battery catches fire, the fire usually spreads upward. The fire-fighting mechanism 30 is located above the first accommodating chamber 11. That is, when the fire-fighting mechanism 30 releases the fire-fighting medium 50, the fire-fighting medium 50 contacts the top of the battery, which can better achieve fire extinguishing or fire suppression.

[0166] The technical solution of the embodiment of the present application is to arrange the fire-fighting mechanism 30 above the first accommodating chamber 11. In the first state, the fire-fighting mechanism 30 carries the fire-fighting medium 50. In the second state, the fire-fighting mechanism 30 releases the fire-fighting medium 50, so that the fire-fighting medium 50 can fall under the action of gravity to contact the battery, thereby reducing the risk of loss caused by battery fire, and helping to improve the reliability of the battery transportation protection device 1 in transporting batteries.

[0167] Please refer to Figures 3 to 7 In some embodiments, the firefighting mechanism 30 includes a first support plate 32 , which is configured to rotate about a first axis O, where the first axis O extends perpendicular to the direction of gravity Z. In a first state, the first support plate 32 is horizontal to support the firefighting medium 50 . In a second state, the first support plate 32 is vertical or tilted to release the firefighting medium 50 .

[0168] In some embodiments, the fire fighting mechanism 30 may include a fixed shaft, and the first support plate 32 may rotate around the fixed shaft, with the first axis O being the central axis of the fixed shaft.

[0169] In some embodiments, the fire-fighting mechanism 30 may include a rotating shaft, which may drive the first support plate 32 to rotate, and the first axis O is the central axis of the rotating shaft.

[0170] In some embodiments, the first axis may be represented by the letter O in the figures.

[0171] In some embodiments, the extension direction of the first axis O may be parallel to the first direction X.

[0172] In some embodiments, when the data detected by the detection member 20 indicates that the battery is not on fire, the first support plate 32 is in the first state, that is, the first support plate 32 extends in the horizontal direction, and the fire-fighting medium 50 is located above the first support plate 32 and is supported by the first support plate 32.

[0173] When the data detected by the detection element 20 indicates that the battery is on fire, the first support plate 32 rotates about the first axis O so that the first support plate 32 tilts, or the first support plate 32 extends along the gravity direction Z, and the fire-fighting medium 50 is released.

[0174] The technical solution of the embodiment of the present application realizes the loading and releasing of the fire-fighting medium 50 by providing a rotating first support plate 32, thereby reducing the risk of loss caused by battery fire and improving the reliability of the battery transportation protection device 1 in transporting batteries.

[0175] Please refer to Figures 3 to 7In some embodiments, the fire-fighting mechanism 30 further includes a first locking member 33 and a driving member 34 , wherein the first locking member 33 is used to lock the first support plate 32 in a horizontal position, and the driving member 34 is used to drive the first locking member 33 to move to unlock the first support plate 32 .

[0176] When the first support plate 32 is positioned horizontally, it tends to tilt downward due to gravity. In some embodiments, the firefighting mechanism 30 may include a first locking member 33. When the firefighting mechanism 30 is in the first position, the first locking member 33 limits the position of the first support plate 32, so that the first support plate 32 always maintains a horizontal position.

[0177] The limiting method can be that the first locking member 33 is located below the first support plate 32 to hold the first support plate 32 so that the first support plate 32 cannot tilt downward, or the first locking member 33 pulls the first support plate 32 so that the first support plate 32 cannot tilt downward.

[0178] When the fire-fighting mechanism 30 needs to switch from the first state to the second state, the driving member 34 can drive the first locking member 33 to move, so that the first locking member 33 no longer limits the first support plate 32, and the first support plate 32 tilts under the action of gravity, so that the fire-fighting medium 50 is released.

[0179] In some embodiments, the first support plate 32 may be made of metal.

[0180] According to the technical solution of the embodiment of the present application, the temperature of the battery is often high when it catches fire. By setting a driving member 34 and a first locking member 33 to control the first support plate 32 to carry and release the fire-fighting medium 50, instead of manually releasing the fire-fighting medium 50, the convenience and safety of battery fire fighting are improved, the risk of loss caused by battery fire is reduced, and the reliability of the battery transportation protection device 1 in transporting batteries is improved.

[0181] Please refer to Figures 3 to 7 In some embodiments, the firefighting mechanism 30 further includes a second support plate 35 , which is fixed relative to the housing 10 and horizontally supports the firefighting medium 50 . The first support plate 32 is rotatably connected to the second support plate 35 . The detection member 20 is disposed on the second support plate 35 .

[0182] In some embodiments, the firefighting mechanism 30 may include a second support plate 35, which may be fixed to the housing 10. In the first state, the first support plate 32 and the second support plate 35 may both extend horizontally, and the upper surface of the first support plate 32 and the upper surface of the second support plate 35 may be located at the same horizontal plane to jointly support the firefighting medium 50.

[0183] In some embodiments, the second support plate 35 may be made of metal.

[0184] In some embodiments, the material of the second support plate 35 may be the same as that of the first support plate 32 .

[0185] In some embodiments, the second support plate 35 may be provided with a fixed shaft, and the first support plate 32 is rotatably connected to the fixed shaft, that is, the first support plate 32 can rotate relative to the fixed shaft.

[0186] Because the first support plate 32 is rotatable and is restrained by the first locking member 33, and the firefighting medium 50 may be heavy, in some embodiments, the second support plate 35 and the first support plate 32 jointly support the firefighting medium 50, allowing the first support plate 32 to better maintain a horizontal position in the first state, reducing the load on the first locking member 33.

[0187] In some embodiments, the detection member 20 may be disposed on the lower surface of the second support plate 35 , that is, the detection member 20 is located in the first accommodating cavity 11 .

[0188] In some embodiments, the second support plate 35 is fixed to the box body 10 , so that the second support plate 35 can better withstand the gravity of the detection element 20 .

[0189] In some embodiments, the second support plate 35 may be provided with a mounting hole, and the detection member 20 is connected to the mounting hole by a bolt.

[0190] The technical solution of the embodiment of the present application utilizes a second support plate 35 for securing the first support plate 32, thereby facilitating the installation of the first support plate 32. Furthermore, the first and second support plates 32, 35, jointly support the firefighting medium 50, thereby improving the reliability of the firefighting medium 50. Furthermore, the second support plate 35 is used to secure the detection element 20. Since the second support plate is fixed to the housing 10, the detection element 20 is securely mounted, thereby improving the reliability of the detection element 20 installation.

[0191] Please refer to Figures 3 to 7 In some embodiments, the number of the first support plates 32 and the second support plates 35 are both multiple, and the first support plates 32 and the second support plates 35 are alternately arranged along the second direction Y, and the extension direction of the first axis O, the second direction Y and the gravity direction Z are perpendicular to each other.

[0192] In some embodiments, there can be multiple first support plates 32 and multiple second support plates 35. The first support plates 32 and the second support plates 35 can be arranged alternately along the second direction Y, that is, a second support plate 35 is provided between two first support plates 32, and a first support plate 32 is provided between two second support plates 35.

[0193] Because the first support plate 32 is a movable plate with limited load-bearing capacity, in some embodiments, the first support plate 32 and the second support plate 35 are arranged alternately to better support the firefighting medium 50. Furthermore, when releasing the firefighting medium 50, the first support plate 32 is tilted, allowing the firefighting medium 50 to be released more quickly and at more locations, thereby better covering the battery fire area.

[0194] In some embodiments, each second support plate 35 may be provided with a detection element 20 , so that the multiple detection elements 20 can better detect the environmental parameters in the first accommodating cavity 11 .

[0195] It should be noted that the driving member 34 can also be arranged on the second support plate 35. Since the driving member 34 is heavy, in order to better support the driving member 34, the two second support plates 35 can be directly connected to support the driving member 34, that is, the first support plate 32 is not provided between the two second support plates 35 supporting the driving member 34.

[0196] The technical solution of the embodiment of the present application is to alternately arrange multiple first support plates 32 and multiple second support plates 35, so that the multiple fixed second support plates 35 can better support the fire-fighting medium 50. At the same time, the multiple first support plates 32 release the fire-fighting medium 50 at a faster speed, reducing the risk of losses caused by battery fires, and helping to improve the reliability of the battery transportation protection device 1 in transporting batteries.

[0197] Please refer to Figures 3 to 7 In some embodiments, a second opening 36 is formed between two adjacent second support plates 35 . In the first state, the first support plate 32 closes the second opening 36 ; in the second state, the first support plate 32 opens the second opening 36 .

[0198] In some embodiments, a second opening 36 may be located between two adjacent support plates, communicating with the first accommodating chamber 11. When the firefighting mechanism 30 is in the first position, the first support plate 32 is horizontal, closing the second opening 36 and isolating the firefighting medium 50 from the first accommodating chamber 11. When the firefighting mechanism 30 is in the second position, the first support plate 32 is tilted, opening the second opening 36 and allowing the firefighting medium 50 to enter the first accommodating chamber 11 through the second opening 36.

[0199] The technical solution of the embodiment of the present application is to close the second opening 36 by the first support plate 32 to support the fire-fighting medium 50; and to open the second opening 36 by the first support plate 32 to release the fire-fighting medium 50, thereby reducing the risk of loss caused by battery fire and improving the reliability of the battery transportation protection device 1 in transporting batteries.

[0200] Please refer to Figures 3 to 7 In some embodiments, there are multiple first locking members 33 , and the first support plates 32 correspond to the first locking members 33 one by one. The firefighting mechanism 30 further includes a linkage shaft 37 , which connects the multiple first locking members 33 so that the multiple first locking members 33 are linked to each other. The driving member 34 is connected to the linkage shaft 37 .

[0201] In some embodiments, there are multiple first locking members 33 , and the number of the first locking members 33 may be the same as the number of the first support plates 32 , where one first support plate 32 corresponds to one first locking member 33 .

[0202] In some embodiments, the driving member 34 may be a cylinder or a motor.

[0203] In some embodiments, the firefighting mechanism 30 may include a linkage shaft 37 extending along the second direction Y, and the plurality of first locking members 33 are connected to the linkage shaft 37 . One end of the linkage shaft 37 is connected to the output end of the driving member 34 .

[0204] When the driving member 34 drives the linkage shaft 37 to move, the linkage shaft 37 simultaneously drives the plurality of first locking members 33 to move, thereby enabling the plurality of first support plates 32 to release the firefighting medium 50 together.

[0205] The technical solution of the embodiment of the present application connects multiple first locking members 33 through a linkage shaft 37, so that the driving member 34 can drive the multiple first locking members 33 to move through the linkage shaft 37, which is beneficial to improving the consistency of the release of the fire-fighting medium 50 by the multiple first support plates 32, reducing the number of driving members 34, and saving costs.

[0206] Please refer to Figures 3 to 7 In some embodiments, the plurality of first locking members 33 are respectively disposed on the plurality of second support plates 35 .

[0207] In some embodiments, each first locking member 33 corresponds to a first support plate 32 , and each first locking member 33 may be correspondingly disposed on a geothermal support plate adjacent to the first support plate 32 .

[0208] The technical solution of the embodiment of the present application is to set multiple first locking members 33 through the second support plate 35. Since the second support member is fixedly set on the box body 10, the first locking members 33 are fixedly set, which is conducive to improving the reliability of the installation of the first locking members 33.

[0209] Please refer to Figures 3 to 7In some embodiments, the fire-fighting mechanism 30 further includes a mounting seat 38 and a second locking member 39, the mounting seat 38 is fixed to the second support plate 35, the first locking member 33 is movably disposed on the mounting seat 38, the second locking member 39 is fixed to the first support plate 32, and the second locking member 39 has a locking hole 391 for inserting the first locking member 33.

[0210] In some embodiments, the firefighting mechanism 30 may include a mounting seat 38 , and the first locking member 33 is movably connected to the mounting seat 38 . The first locking member 33 may move along the second direction Y relative to the mounting seat 38 .

[0211] In some embodiments, when the firefighting mechanism 30 is in the first state, the first locking member 33 extends into the locking hole 391 of the second locking member 39, so that the first locking member 33 fixes the second locking member 39 in the weight direction. The second locking member 39 is fixed to the first support plate 32, so that the first locking member 33 can limit the position of the first support plate 32.

[0212] When the fire-fighting mechanism 30 switches from the first state to the second state, the driving member 34 drives the first locking member 33 to move along the second direction Y away from the second locking member 39, so that the first locking member 33 extends from the locking hole 391. At this time, the second locking member 39 loses its limit, and the first support plate 32 tilts under the action of gravity.

[0213] In some embodiments, the number of the second locking members 39 may be the same as the number of the first locking members 33 , with one first locking member 33 corresponding to one second locking member 39 .

[0214] In some embodiments, the first locking member 33 and the second locking member 39 may both be made of metal.

[0215] In some embodiments, the mounting base 38 and the second support plate 35 can be connected by bolts or welding.

[0216] In some embodiments, the second locking member 39 and the first support plate 32 may be connected by bolts or welding.

[0217] The technical solution of the embodiment of the present application realizes that the first support plate 32 carries or releases the fire-fighting medium 50 through the cooperation of the first locking member 33 and the second locking member 39, thereby reducing the risk of loss caused by battery fire and improving the reliability of the battery transportation protection device 1 in transporting batteries.

[0218] Please refer to Figure 3 、 Figure 4 、 Figure 8 and Figure 9In some embodiments, a plurality of pressure relief modules 40 are located above the fire-fighting mechanism 30 . The fire-fighting mechanism 30 is provided with a connecting hole 31 . The connecting hole 31 connects the pressure relief channel 121 and the first accommodating chamber 11 .

[0219] In some embodiments, the bottom of the second accommodating chamber 122 may have an opening connected to the first accommodating chamber 11, and the pressure relief module 40 is arranged in the second accommodating chamber 122. The first support plate 32 and the second support plate 35 of the fire-fighting mechanism 30 can close the opening, so that the pressure relief mechanism is located above the fire-fighting mechanism 30, and the pressure relief mechanism is also located above the fire-fighting medium 50.

[0220] To facilitate the gas in the first accommodating chamber 11 to enter the second accommodating chamber 122 , the first support plate 32 and the second support plate 35 may be provided with a communication hole 31 , which connects the first accommodating chamber 11 with the second accommodating chamber 122 .

[0221] There may be multiple first support plates 32 and second support plates 35 , and each of the first support plates 32 and second support plates 35 may be provided with a connecting hole 31 , that is, there may be multiple connecting holes 31 , and the multiple connecting holes 31 may be arranged at intervals.

[0222] In some embodiments, the number of the communication hole 31 may be one. The first support plate 32 and the second support plate 35 may each be provided with multiple through holes, which are interconnected and arranged along the second direction Y. The multiple through holes form a communication hole 31 extending along the second direction Y. To reduce the risk of the firefighting medium 50 falling into the first accommodating chamber 11 through the communication hole 31, a baffle protruding from the upper surfaces of the first support plate 32 and the second support plate 35 may be provided around the communication hole 31 to limit the firefighting medium 50.

[0223] The firefighting medium 50 may be in two parts, and the two parts of the firefighting medium 50 are respectively located on both sides of the communicating hole 31 in the second direction Y.

[0224] In some embodiments, in the gravity direction Z, the connecting hole 31 can correspond to the gap between the two rows of pressure relief modules 40, so that when the battery catches fire, the gas in the first accommodating cavity 11 enters the gap between the two rows of pressure relief modules 40 through the connecting hole 31 and is discharged from the two rows of pressure relief modules 40 respectively.

[0225] The technical solution of the embodiment of the present application is to provide a connecting hole 31 in the fire-fighting mechanism 30 to connect the pressure relief channel 121 and the first accommodating chamber 11, so as to facilitate the pressure relief channel 121 to discharge the gas in the first accommodating chamber 11, thereby reducing the risk of excessive air pressure in the first accommodating chamber 11, and helping to improve the reliability of the battery transportation protection device 1 in transporting batteries.

[0226] Please refer to Figures 1 to 3In some embodiments, the environmental parameter includes at least one of temperature, combustible gas concentration, and gas pressure.

[0227] In some embodiments, the environmental parameter may include one of temperature, combustible gas concentration, and gas, that is, the detection element 20 may be at least one of a temperature sensor, a combustible gas concentration sensor, or an air pressure sensor.

[0228] In some embodiments, there may be multiple detection elements 20, each of which is a temperature sensor, a combustible gas concentration sensor, or an air pressure sensor. Alternatively, the detection element 20 may be an integrated sensor for detecting temperature, combustible gas concentration, and air pressure.

[0229] In some embodiments, the detection component 20 can also be connected to the external monitoring system signal, and the connection method can be circuit connection, WiFi connection, Bluetooth connection, etc. There can also be multiple detection components 20, and the multiple detection components 20 are respectively temperature sensors, combustible gas concentration sensors or air pressure sensors. The detection step can be to first detect the temperature in the first accommodating cavity 11 by a temperature sensor. When the temperature sensor detection data exceeds a threshold, the temperature sensor transmits the detected data to the monitoring system, and the combustible gas concentration sensor and the air pressure sensor start working. When the data detected by one of the combustible gas concentration sensor and the air pressure sensor exceeds the threshold, an alarm signal will be sent to the monitoring system, and the fire-fighting mechanism 30 will be switched from the first state to the second state to release the fire-fighting medium 50 to the battery.

[0230] It should be noted that the alarm signal received by the monitoring system may be a buzzer, a red light flashing on the display screen, etc.

[0231] In some embodiments, the fire protection mechanism 30 may further include a display, which is disposed outside the housing 10 and is signal-connected to the detection element 20. When the battery is placed in the housing 10, the detection element 20 detects the environmental parameters of the first receiving chamber 11 and displays them on the display to ensure that the battery is in a normal state when it is loaded.

[0232] According to the technical solution of the embodiment of the present application, thermal runaway of the battery is accompanied by temperature rise, release of combustible gases (H2, CO, etc.), etc., and the released gases change the air pressure in the first accommodating cavity 11. The detection component 20 detects at least one of the temperature, combustible gas concentration and air pressure, which is conducive to quickly discovering whether the transported battery has thermal runaway, reducing the risk of loss caused by battery fire, and improving the reliability of the battery transportation protection device 1 in transporting batteries.

[0233] Please refer to Figure 1 and Figure 3 In some embodiments, the firefighting medium 50 includes flame retardant microbeads.

[0234] In some embodiments, the flame retardant microbeads are functional particles with a diameter of micrometers or millimeters, which can be flame retardant through physical or chemical effects.

[0235] Flame-retardant microbeads can be used to retard fires through physical means, similar to how sand extinguishes a fire. The microbeads come into contact with the fire, reducing the amount of oxygen available to the flame. Alternatively, the microbeads expand when heated, forming a thermal barrier.

[0236] Flame retardant microbeads can be flame-retardant through chemical action. The flame retardant microbeads decompose when heated, thereby absorbing heat and releasing water vapor, such as aluminum hydroxide, magnesium hydroxide, etc. Or the flame retardant microbeads release inert gases, such as melamine.

[0237] In some embodiments, the flame retardant microbeads may be hollow structures to reduce the weight of the flame retardant microbeads, thereby making the battery transport protective device 1 lighter.

[0238] The flame-retardant microbeads of the present embodiment have good heat absorption properties and can expand to form a physical flame-retardant layer in high-temperature environments. Furthermore, the flame-retardant microbeads are highly lightweight. By using the flame-retardant microbeads as the firefighting medium 50, the risk of damage caused by battery fires is reduced, thereby improving the reliability of the battery transport protection device 1 while also reducing its weight.

[0239] Please refer to Figure 3 In some embodiments, the flame retardant microbeads include at least one of glass microbeads, ceramic microbeads, and mineral microbeads.

[0240] In some embodiments, the flame retardant microspheres may be glass microspheres.

[0241] The technical solution of the embodiment of the present application reduces the risk of loss caused by battery fire by using at least one of glass microbeads, ceramic microbeads, and mineral microbeads as a fire-fighting medium 50, which is beneficial to improving the reliability of the battery transportation protection device 1 in transporting batteries, and at the same time helps to reduce the quality of the battery transportation protection device 1.

[0242] Please refer to Figure 1 and Figure 3 In some embodiments, the box cover 12 includes a box cover frame 123, a first thermal insulation lining 124 and a second thermal insulation lining 125. The box cover frame 123 supports the pressure relief module 40. The first thermal insulation lining 124 and the second thermal insulation lining 125 are both connected to the box cover frame 123. The first thermal insulation lining 124 is arranged around the pressure relief module 40, and the second thermal insulation lining 125 is arranged above the pressure relief module 40. The first thermal insulation lining 124 and the second thermal insulation lining 125 enclose a second accommodating cavity 122.

[0243] In some embodiments, the box cover frame 123 may be a frame formed by welding metal pipes.

[0244] In some embodiments, the pressure relief module 40 may be disposed in the tank cover frame 123 to improve the strength of the tank cover 12 , thereby improving the reliability of the pressure relief module 40 .

[0245] When a battery fire occurs, gas is discharged through the pressure relief channel 121 of the pressure relief module 40, causing the surface temperature of the pressure relief module 40 to rise. Due to heat transfer, the temperature of the outer surface of the tank cover 12 also rises. In some embodiments, a first thermal insulation liner 124 and a second thermal insulation liner 125 are provided around and above the pressure relief module 40, respectively, to reduce the risk of the heat from the pressure relief module 40 being transferred to the outer surface of the tank cover 12, causing the outer surface of the tank cover 12 to rise in temperature.

[0246] In some embodiments, the first thermal insulation lining 124 can be arranged around the outer periphery of the second thermal insulation lining 125, and the upper end of the first thermal insulation lining 124 is connected to the second thermal insulation lining 125 to form a second accommodating cavity 122 with an opening provided below, and the gas in the first accommodating cavity 11 enters the second accommodating cavity 122 through the opening of the second accommodating cavity 122.

[0247] In some embodiments, the first insulation lining 124 may be connected to the inner periphery of the tank cover frame 123 , and the second insulation lining 125 may be connected to the top of the tank cover frame 123 . The first insulation lining 124 and the second insulation lining 125 are not directly connected.

[0248] The technical solution of the embodiment of the present application improves the reliability of the pressure relief module 40 by providing a cover frame 123 to support the pressure relief module 40. The first and second insulation liners 124, 125 are provided around and above the pressure relief module 40, providing the cover 12 with better thermal insulation. When high-temperature gas is discharged, the impact of the temperature on the outer surface of the cover 12 is reduced.

[0249] Please refer to Figure 1 and Figure 3 In some embodiments, the material of the first thermal insulation lining 124 includes aerogel; the material of the second thermal insulation lining 125 includes aerogel.

[0250] In some embodiments, the material of the first thermal insulation lining 124 and the material of the second thermal insulation lining 125 may be the same or different.

[0251] In some embodiments, the material of the first thermal insulation lining 124 can be silicate aerogel, aluminum oxide aerogel, titanium oxide aerogel, etc.

[0252] In some embodiments, the material of the second thermal insulation lining 125 can be silicate aerogel, aluminum oxide aerogel, titanium oxide aerogel, etc.

[0253] In some embodiments, both the first insulation liner 124 and the second insulation liner 125 may be silicate-based aerogel panels.

[0254] According to the technical solution of the embodiment of the present application, aerogel has good thermal insulation performance and low density. By setting aerogel as the material of the first thermal insulation lining 124 and the second thermal insulation lining 125, the box cover 12 has good thermal insulation performance, and at the same time helps to reduce the mass of the battery transportation protection device 1.

[0255] Please refer to Figure 1 and Figure 3 In some embodiments, the box cover 12 further includes a box cover outer panel 126 , which is connected to the box cover frame 123 . The box cover outer panel 126 is disposed around the pressure relief module 40 , and the box cover 12 outer panel is located on the outside of the first thermal insulation lining 124 .

[0256] In some embodiments, the cover outer panel 126 may be made of metal.

[0257] In some embodiments, the tank cover outer panel 126 may be connected to the outer periphery of the tank cover frame 123 to be located outside the first thermal insulation liner 124 .

[0258] The technical solution of the embodiment of the present application reduces the risk of the first thermal insulation lining 124 being damaged and thus affecting the thermal insulation performance of the box cover 12 by providing a box cover outer panel 126 on the outer side of the first thermal insulation lining 124, which helps to improve the reliability of the box cover 12.

[0259] Please refer to Figure 1 and Figure 3 In some embodiments, the first thermal insulation lining 124 is provided with a first pressure relief port 1241 , and the box cover outer panel 126 is provided with a second pressure relief port 1261 corresponding to the first pressure relief port 1241 , and the first pressure relief port 1241 is connected to the second pressure relief port 1261 and the pressure relief channel 121 .

[0260] In some embodiments, the first thermal insulation lining 124 may be provided with a first pressure relief port 1241 , and the box cover outer panel 126 may be provided with a second pressure relief port 1261 . The first pressure relief port 1241 and the second pressure relief port 1261 are correspondingly connected, and the first pressure relief port 1241 may be connected to the smoke outlet 42 of the pressure relief channel 121 .

[0261] In some embodiments, when a battery catches fire, the gas in the first accommodating chamber 11 enters the pressure relief channel 121 through the connecting hole 31 and the smoke inlet 41. After the filter element 44 filters the gas, the gas is discharged from the smoke outlet 42 through the first pressure relief port 1241 and the second pressure relief port 1261.

[0262] In some embodiments, the number of pressure relief modules 40 can be multiple, that is, the number of smoke outlets 42 can be multiple, and the number of first pressure relief outlets 1241 and second pressure relief outlets 1261 can be the same as the number of smoke outlets 42, and one first pressure relief outlet 1241 corresponds to one second pressure relief outlet 1261 and one smoke outlet 42.

[0263] The technical solution of the embodiment of the present application facilitates the discharge of gas from the first accommodating chamber 11 by providing the first pressure relief port 1241 and the second pressure relief port 1261 in communication with the pressure relief channel 121 .

[0264] Please refer to Figure 1 and Figure 3 In some embodiments, the tank cover 12 further includes a tank cover top plate 127 , which is connected to the tank cover frame 123 . The tank cover top plate 127 is located on a side of the second thermal insulation liner 125 that faces away from the pressure relief module 40 .

[0265] In some embodiments, the material of the box cover top plate 127 can be metal.

[0266] In some embodiments, the outer panel 126 of the box cover can be disposed around the outer periphery of the box cover top plate 127 , and an upper end of the outer panel 126 of the box cover is connected to the box cover top plate 127 .

[0267] In some embodiments, the box cover outer panel 126 can be connected to the outer periphery of the box cover frame 123, and the box cover top panel 127 can be connected to the top of the box cover frame 123. The box cover outer panel 126 and the box cover top panel 127 are not directly connected.

[0268] In some embodiments, the material of the box cover outer panel 126 can be the same as the material of the box cover top panel 127 .

[0269] In some embodiments, the material of the box cover outer panel 126 may be different from the material of the box cover top panel 127 .

[0270] The technical solution of the embodiment of the present application reduces the risk of the second thermal insulation lining 125 being damaged and thus affecting the thermal insulation performance of the box cover 12 by setting a box cover top plate 127 on the outer side of the second thermal insulation lining 125, which is conducive to improving the reliability of the box cover 12.

[0271] Please refer to Figure 1 , and refer to Figure 11 , Figure 11This is an exploded view of the box body provided in some embodiments of the present application. In some embodiments, the box body 13 includes side walls 131 and a bottom wall 132. The bottom wall 132 is disposed opposite the box cover 12. The side walls 131 are disposed around the bottom wall 132, with the lower ends of the side walls 131 connected to the bottom wall 132 and the upper ends of the side walls 131 connected to the box cover 12. The side walls 131 include a side wall lining 1311, a side wall outer shell 1312, and a first flame-retardant and thermally insulating layer 1313. The first flame-retardant and thermally insulating layer 1313 is located between the side wall lining 1311 and the side wall outer shell 1312.

[0272] In some embodiments, in the gravity direction Z, the bottom wall 132 may be disposed opposite to the box cover 12 , and the thickness direction of the bottom wall 132 may be parallel to the thickness direction of the box cover 12 .

[0273] In some embodiments, the sidewall 131 may include a sidewall lining 1311, which is used to form the first receiving cavity 11. When the battery is located in the first receiving cavity 11, the sidewall lining 1311 is the portion of the sidewall 131 facing the battery, and the sidewall outer shell 1312 is the portion of the sidewall 131 facing away from the battery.

[0274] In some embodiments, the material of the side wall shell 1312 and the material of the side wall lining 1311 can both be metal.

[0275] In some embodiments, the material of the side wall shell 1312 and the material of the side wall lining 1311 can be the same or different.

[0276] When the battery catches fire, the temperature of the first accommodating cavity 11 will increase. In order to reduce the risk of heat energy in the first accommodating cavity 11 being transferred to the outer surface of the box body 13, causing the outer surface temperature of the box body 13 to be too high, in some embodiments, a first flame-retardant insulation layer 1313 is provided between the side wall lining 1311 and the side wall outer shell 1312.

[0277] In some embodiments, the material of the first flame retardant heat insulation layer 1313 can be aerogel, fiber fire-resistant material, glass wool, etc.

[0278] The technical solution of the embodiment of the present application provides a first flame-retardant insulation layer 1313 between the side wall lining 1311 and the side wall outer shell 1312, so that the box body 13 has better thermal insulation properties, and reduces the impact of temperature on the outer surface of the box body 13 when the battery thermal runaway occurs.

[0279] Please refer to Figure 1 and Figure 11In some embodiments, first flame-retardant thermal insulation layer 1313 includes a first sub-flame-retardant thermal insulation layer 1313a and a second sub-flame-retardant thermal insulation layer 1313b. Second sub-flame-retardant thermal insulation layer 1313b is located between sidewall lining 1311 and first sub-flame-retardant thermal insulation layer 1313a. The thermal conductivity of second sub-flame-retardant thermal insulation layer 1313b is lower than that of first sub-flame-retardant thermal insulation layer 1313a.

[0280] When a battery catches fire, heat energy is transferred outward from the first accommodating cavity 11 , causing the temperature of the box body 13 to gradually increase from the outside to the inside. In some embodiments, the first flame retardant thermal insulation layer 1313 is divided into two layers, that is, the first flame retardant thermal insulation layer 1313 includes a first sub-flame retardant thermal insulation layer 1313a and a second sub-flame retardant thermal insulation layer 1313b, wherein the thermal conductivity of the second sub-flame retardant thermal insulation layer 1313b is less than the thermal conductivity of the first sub-flame retardant thermal insulation layer 1313a, that is, the second sub-flame retardant thermal insulation layer 1313b has better thermal insulation performance, and the second sub-flame retardant thermal insulation layer 1313b is located between the side wall lining 1311 and the first sub-flame retardant thermal insulation layer 1313a, that is, the second sub-flame retardant thermal insulation layer 1313b is located on the inner side of the first sub-flame retardant thermal insulation layer 1313a, which is used to form a first layer of insulation, after isolating most of the heat in the first accommodating cavity 11, and then isolating the remaining small amount of heat through the first sub-flame retardant thermal insulation layer 1313a.

[0281] The technical solution of the embodiment of the present application is to achieve gradient insulation in which the insulation performance of the box body 13 gradually increases from the outside to the inside by arranging the second sub-flame retardant insulation layer 1313b on the inner side of the first sub-flame retardant insulation layer 1313a, and the thermal conductivity of the second sub-flame retardant insulation layer 1313b is smaller than the thermal conductivity of the first sub-flame retardant insulation layer 1313a, so that the arrangement of the first flame retardant insulation layer 1313 is more reasonable.

[0282] Please refer to Figure 1 and Figure 11 In some embodiments, the first sub-flame retardant heat insulation layer 1313a includes aerogel, and the second sub-flame retardant heat insulation layer 1313b includes a fiber fire-resistant material.

[0283] In some embodiments, the material of the first flame retardant and heat insulating sub-layer 1313a may be aerogel, such as silicate aerogel, aluminum oxide aerogel, titanium oxide aerogel, etc.

[0284] In some embodiments, the first flame retardant and heat insulating sub-layer 1313a may be a silicate-based aerogel board.

[0285] In some embodiments, the material of the second flame-retardant heat-insulating sub-layer 1313b can be aluminum silicate refractory fiber, chromium-containing aluminum silicate refractory fiber, zirconium oxide refractory fiber, etc.

[0286] In some embodiments, the second flame retardant insulation sub-layer 1313b may be a ceramic fiberboard.

[0287] According to the technical solution of the embodiment of the present application, the density of aerogel is low and the thermal conductivity of fiber refractory material is low. By setting aerogel as the first sub-flame retardant thermal insulation layer 1313a and setting fiber refractory material as the second sub-flame retardant thermal insulation layer 1313b, gradient insulation is achieved in which the thermal insulation performance of the box body 13 gradually increases from the outside to the inside, making the arrangement of the first flame retardant thermal insulation layer 1313 more reasonable and helping to reduce the mass of the battery transportation protection device 1.

[0288] Please refer to Figure 1 and Figure 11 In some embodiments, the bottom wall 132 includes a bottom wall lining 1321 , a bottom wall shell 1322 , and a second flame retardant insulation layer 1323 , wherein the second flame retardant insulation layer 1323 is located between the bottom wall lining 1321 and the bottom wall shell 1322 .

[0289] In some embodiments, in the gravity direction Z, the bottom wall lining 1321 , the second flame retardant insulation layer 1323 and the bottom wall outer shell 1322 are arranged in sequence.

[0290] In some embodiments, the bottom wall 132 may include a bottom wall lining 1321, which is used to form the first receiving cavity 11. When the battery is located in the first receiving cavity 11, the bottom wall lining 1321 is the portion of the bottom wall 132 facing the battery, and the bottom wall shell 1322 is the portion of the bottom wall 132 facing away from the battery.

[0291] In some embodiments, the material of the bottom wall shell 1322 and the material of the bottom wall lining 1321 can both be metal.

[0292] In some embodiments, the material of the bottom wall outer shell 1322 and the material of the bottom wall lining 1321 can be the same or different.

[0293] When the battery catches fire, the temperature of the first accommodating cavity 11 will increase. In order to reduce the risk of heat energy in the first accommodating cavity 11 being transferred to the outer surface of the box body 13, causing the outer surface temperature of the box body 13 to be too high, in some embodiments, a second flame-retardant insulation layer 1323 is provided between the bottom wall lining 1321 and the bottom wall outer shell 1322.

[0294] In some embodiments, the material of the second flame retardant heat insulation layer 1323 can be aerogel, fiber fire-resistant material, glass wool, etc.

[0295] The technical solution of the embodiment of the present application provides a second flame-retardant insulation layer 1323 between the bottom wall lining 1321 and the bottom wall outer shell 1322, so that the box body 13 has better thermal insulation properties, and reduces the impact of temperature on the outer surface of the box body 13 when the battery thermal runaway occurs.

[0296] Please refer to Figure 1and Figure 11 In some embodiments, second flame-retardant and heat-insulating layer 1323 includes a third sub-flame-retardant and heat-insulating layer 1323a and a fourth sub-flame-retardant and heat-insulating layer 1323b. Third sub-flame-retardant and heat-insulating layer 1323a is located between bottom wall lining 1321 and fourth sub-flame-retardant and heat-insulating layer 1323b. The thermal conductivity of third sub-flame-retardant and heat-insulating layer 1323a is lower than that of fourth sub-flame-retardant and heat-insulating layer 1323b.

[0297] When a battery catches fire, heat energy is transferred outward from the first accommodating cavity 11 , causing the temperature of the box body 13 to gradually increase from the outside to the inside. In some embodiments, the second flame retardant thermal insulation layer 1323 is divided into two layers, that is, the second flame retardant thermal insulation layer 1323 includes a third sub-flame retardant thermal insulation layer 1323a and a fourth sub-flame retardant thermal insulation layer 1323b, wherein the thermal conductivity of the third sub-flame retardant thermal insulation layer 1323a is less than the thermal conductivity of the fourth sub-flame retardant thermal insulation layer 1323b, that is, the third sub-flame retardant thermal insulation layer 1323a has better thermal insulation performance, and the third sub-flame retardant thermal insulation layer 1323a is located between the bottom wall lining 1321 and the fourth sub-flame retardant thermal insulation layer 1323b, that is, the third sub-flame retardant thermal insulation layer 1323a is located on the inner side of the fourth sub-flame retardant thermal insulation layer 1323b, which is used to form a first layer of thermal insulation, after isolating most of the heat in the first accommodating cavity 11, and then isolating the remaining small amount of heat through the fourth sub-flame retardant thermal insulation layer 1323b.

[0298] The technical solution of the embodiment of the present application is to achieve gradient insulation in which the insulation performance of the box body 13 gradually increases from the outside to the inside by arranging the third sub-flame retardant insulation layer 1323a on the inner side of the fourth sub-flame retardant insulation layer 1323b, and the thermal conductivity of the third sub-flame retardant insulation layer 1323a is smaller than the thermal conductivity of the fourth sub-flame retardant insulation layer 1323b, so that the arrangement of the second flame retardant insulation layer 1323 is more reasonable.

[0299] Please refer to Figure 1 and Figure 11 In some embodiments, the third sub-flame retardant heat insulation layer 1323a includes a fiber fire-resistant material, and the fourth sub-flame retardant heat insulation layer 1323b includes aerogel.

[0300] In some embodiments, the fourth flame retardant and heat-insulating sub-layer 1323b may be made of aerogel, such as silicate aerogel, aluminum oxide aerogel, titanium oxide aerogel, and the like.

[0301] In some embodiments, the fourth flame retardant and heat insulating sub-layer 1323b may be a silicate-based aerogel board.

[0302] In some embodiments, the material of the third sub-flame-retardant heat-insulating layer 1323a can be aluminum silicate refractory fiber, chromium-containing aluminum silicate refractory fiber, zirconium oxide refractory fiber, etc.

[0303] In some embodiments, the third flame retardant and heat insulating sub-layer 1323a may be a ceramic fiberboard.

[0304] The technical solution of the embodiment of the present application realizes gradient insulation of the box body 13 with gradually increasing insulation performance from the outside to the inside by arranging aerogel as the fourth sub-flame-retardant insulation layer 1323b and arranging fiber refractory material as the third sub-flame-retardant insulation layer 1323a, so as to make the arrangement of the second flame-retardant insulation layer 1323 more reasonable and help to reduce the mass of the battery transportation protection device 1.

[0305] Please refer to Figure 1 and Figure 11 In some embodiments, the first flame-retardant thermal insulation layer 1313 includes a first sub-flame-retardant thermal insulation layer 1313a and a second sub-flame-retardant thermal insulation layer 1313b. The second sub-flame-retardant thermal insulation layer 1313b is located between the sidewall lining 1311 and the first sub-flame-retardant thermal insulation layer 1313a. The material of the first sub-flame-retardant thermal insulation layer 1313a is the same as that of the fourth sub-flame-retardant thermal insulation layer 1323b, and the thickness of the fourth sub-flame-retardant thermal insulation layer 1323b is greater than that of the first sub-flame-retardant thermal insulation layer 1313a. The material of the second sub-flame-retardant thermal insulation layer 1313b is the same as that of the third sub-flame-retardant thermal insulation layer 1323a, and the thickness of the third sub-flame-retardant thermal insulation layer 1323a is greater than that of the second sub-flame-retardant thermal insulation layer 1313b.

[0306] In some embodiments, the material of the first sub-flame retardant thermal insulation layer 1313a is the same as the material of the fourth sub-flame retardant thermal insulation layer 1323b, and the thickness of the fourth sub-flame retardant thermal insulation layer 1323b is greater than the thickness of the first sub-flame retardant thermal insulation layer 1313a, so that the thermal insulation effect of the fourth sub-flame retardant thermal insulation layer 1323b is better than the thermal insulation effect of the first sub-flame retardant thermal insulation layer 1313a.

[0307] The material of the second sub-flame retardant thermal insulation layer 1313b is the same as that of the third sub-flame retardant thermal insulation layer 1323a, and the thickness of the third sub-flame retardant thermal insulation layer 1323a is greater than the thickness of the second sub-flame retardant thermal insulation layer 1313b, so that the thermal insulation effect of the third sub-flame retardant thermal insulation layer 1323a is better than the thermal insulation effect of the second sub-flame retardant thermal insulation layer 1313b.

[0308] That is, the insulation effect of the second flame-retardant and heat-insulating layer 1323 located below is superior to that of the surrounding first flame-retardant and heat-insulating layer 1313. When a battery fire occurs, the high-temperature substances (such as liquids or fluids generated by melting batteries) generated are collected on the bottom wall 132 under the action of gravity, which requires higher flame-retardant and heat-insulating performance of the bottom wall 132. Therefore, the insulation effect of the second flame-retardant and heat-insulating layer 1323 located below is set to be superior to that of the surrounding first flame-retardant and heat-insulating layer 1313.

[0309] According to the technical solution of the embodiment of the present application, when the battery thermal runaway occurs, the generated high-temperature substances will be collected at the bottom of the box body 13 under the action of gravity. By setting the material of the first sub-flame-retardant thermal insulation layer 1313a to be the same as the material of the fourth sub-flame-retardant thermal insulation layer 1323b, and setting the material of the second sub-flame-retardant thermal insulation layer 1313b to be the same as the material of the third sub-flame-retardant thermal insulation layer 1323a, and setting the thickness of the fourth sub-flame-retardant thermal insulation layer 1323b to be greater than the thickness of the first sub-flame-retardant thermal insulation layer 1313a, and setting the thickness of the third sub-flame-retardant thermal insulation layer 1323a to be greater than the thickness of the second sub-flame-retardant thermal insulation layer 1313b, the thermal conductivity of the bottom wall 132 is lower than the thermal conductivity of the side wall 131, so that the bottom wall 132 has better thermal insulation properties. When the battery thermal runaway occurs, the impact of temperature on the outer surface of the bottom wall 132 is reduced.

[0310] Please refer to Figure 1 and Figure 11 , and refer to Figure 12 , Figure 12 Schematic diagram of a box body frame provided in some embodiments of the present application. In some embodiments, the box body 13 further includes a box body frame 134, and the side walls 131 and the bottom wall 132 are both connected to the box body frame 134.

[0311] In some embodiments, the box body frame 134 may be a frame formed by welding metal pipes.

[0312] In some embodiments, the pressure relief module 40 may be disposed in the box body frame 134 to increase the strength of the box body 10 , thereby improving the reliability of the installed battery.

[0313] In some embodiments, the box body skeleton 134 can be divided into two layers of frames, the bottom wall lining 1321 and the side wall lining 1311 can be set in the inner layer of the frame, the bottom wall outer shell 1322 and the side wall outer shell 1312 can be set in the outer layer of the frame, and the first flame retardant insulation layer 1313 and the second flame retardant insulation layer 1323 are set in the space between the two layers of frames.

[0314] In some embodiments, the bottom wall lining 1321, the bottom wall shell 1322, the side wall lining 1311 and the side wall shell 1312 may be plates, wherein the plates may be bent to form reinforcing ribs to improve the structural strength of the plates.

[0315] In some embodiments, an angle can be formed by bending a plate, and the bent plate can be wrapped around the support beams around the box body frame 134 to improve the support strength of the box body frame 134.

[0316] The technical solution of the embodiment of the present application is to provide a box body frame 134 for connecting the side wall 131 and the bottom wall 132, which is beneficial to improving the reliability of the pressure relief module 40.

[0317] Please refer to Figure 1 、 Figure 11 and Figure 12 In some embodiments, the box cover 12 includes a box cover frame 123, and the battery transport protective device 1 includes a first connecting frame 70 and a second connecting frame 71. The first connecting frame 70 is connected to the box body frame 134 and surrounds a first opening 133. The second connecting frame 71 is connected to the box cover frame 123. One of the first connecting frame 70 and the second connecting frame 71 has an inclined outer surface and the other has an inclined inner surface, and the outer and inner surfaces are matingly connected.

[0318] In some embodiments, the outer circumference of the first connection frame 70 may be an inclined surface, and the inner circumference of the second connection frame 71 may be an inclined surface, and the outer circumference and the inner circumference are cooperatively connected.

[0319] In some embodiments, the outer circumference of the second connection frame 71 may be a sloped surface, and the inner circumference of the first connection frame 70 may be a sloped surface, and the outer circumference and the inner circumference are cooperatively connected.

[0320] In some embodiments, the first connection frame 70 can be connected to the top of the box body frame 134 and surround the first opening 133. The second connection frame 71 can be connected to the bottom of the box cover frame 123 and is positioned corresponding to the first connection frame 70.

[0321] The outer circumferential surface of the first connecting frame 70 may be an inclined surface, and along the gravity direction Z, the outer circumferential surface of the first connecting frame 70 may be an inclined surface inclined in a direction away from the center line of the box body 10. The inner circumferential surface of the second connecting frame 71 may be an inclined surface, and along the gravity direction Z, the inner circumferential surface of the second connecting frame 71 may be an inclined surface inclined in a direction away from the center line of the box body 10.

[0322] The technical solution of the embodiment of the present application realizes the connection between the box cover 12 and the box body 13 by cooperating the inclined surface of the first connecting frame 70 and the inclined surface of the second connecting frame 71, and can limit the box cover 12 and the box body 13 in the horizontal direction, which is beneficial to improving the reliability of the connection between the box cover 12 and the box body 13. At the same time, the two inclined surfaces are connected to facilitate the positioning and installation of the box cover 12 and the box body 13 when they are connected.

[0323] Please refer to Figure 1 、 Figure 11 and Figure 12 In some embodiments, the battery transport protection device 1 further includes a seal 80 , which is used to seal the gap between the first connecting frame 70 and the second connecting frame 71 .

[0324] When the battery catches fire, there is a risk that the generated gas may escape from the first receiving chamber 11. In some embodiments, a sealing member 80 may be provided to seal the gap between the first connecting frame 70 and the second connecting frame 71.

[0325] Since the temperature of the generated gas is relatively high, the material of the sealing member 80 may be a material with good high temperature resistance.

[0326] In some embodiments, the sealing member 80 may be made of EPDM rubber.

[0327] The technical solution of the embodiment of the present application reduces the risk of external impurities entering the first accommodating cavity 11 and damaging the battery by providing a sealant 80 in the gap between the first connecting frame 70 and the second connecting frame 71. At the same time, when the battery thermally runs away, the sealant 80 can reduce the risk of high-temperature substances leaking from the gap between the first connecting frame 70 and the second connecting frame 71 and causing losses.

[0328] Please refer to Figure 1 、 Figure 3 and Figure 11 In some embodiments, one of the box body 13 and the box cover 12 is provided with a lock 90 , and the other is provided with a bracket 91 . The lock 90 is connected to the bracket 91 to lock the box cover 12 to the box body 13 .

[0329] In some embodiments, the box cover 12 may be provided with a latch 90, and the box body 13 may be provided with a bracket 91. When the box cover 12 and the box body 13 are connected, the latch 90 and the bracket 91 cooperate to limit the position of the box cover 12 and the box body 13 in the direction of gravity Z. At the same time, when it is necessary to remove the battery, the latch 90 and the bracket 91 are separated to separate the box cover 12 from the box body 13.

[0330] In some embodiments, the box body 13 may be provided with a lock catch 90, and the box cover 12 may be provided with a bracket 91. When the box cover 12 and the box body 13 are connected, the bracket 91 may be provided with a lock hole. The lock catch 90 and the lock hole cooperate to limit the position of the box cover 12 and the box body 13 in the gravity direction Z. At the same time, when it is necessary to remove the battery, the lock catch 90 and the bracket 91 are separated to separate the box cover 12 from the box body 13.

[0331] In some embodiments, the number of the lock buckles 90 and the number of the brackets 91 can be multiple, and the number of the lock buckles 90 and the number of the brackets 91 are the same, and the lock buckles 90 and the brackets 91 are set one by one. The multiple lock buckles 90 and the multiple brackets 91 can be evenly distributed around the box body 10.

[0332] The technical solution of the embodiment of the present application realizes the connection between the box cover 12 and the box body 13 through the lock 90 and the bracket 91, which is conducive to improving the convenience of connecting and separating the box cover 12 and the box body 13.

[0333] Please refer to Figure 1 and Figure 3 In some embodiments, a first hanging portion 128 is provided on the outer peripheral surface of the box cover 12 .

[0334] In some embodiments, a pressure relief module 40 may be provided inside the box cover 12, thereby making the box cover 12 heavier. A first hoisting portion 128 is provided on the outer circumference of the box cover 12 to facilitate hoisting of the box cover 12 using a hoisting tool.

[0335] In some embodiments, the first lifting portion 128 may have a lifting hole so that a lifting tool can be inserted into the lifting hole to lift the box cover 12 .

[0336] According to the technical solution of the embodiment of the present application, the box cover 12 has a large mass. By providing a first lifting portion 128 on the outer peripheral surface of the box cover 12, it is convenient to cooperate with the lifting tool to realize the lifting of the box cover 12, which is beneficial to improving the convenience of connecting and separating the box cover 12 and the box body 13.

[0337] Please refer to Figure 1 , and refer to Figure 13 , Figure 13 for Figure 1 Enlarged view of point C in the middle. In some embodiments, the battery transport protection device 1 further includes a bracket 92 , which is disposed at the bottom of the first accommodating cavity 11 . The bracket 92 is used to carry the battery, and a strap ring 921 is disposed on the periphery of the bracket 92 .

[0338] In some embodiments, when transporting the battery, the battery is first placed on the bracket 92 and fixed with a strap, which is connected to the strap ring 921. The battery and the bracket 92 are then moved together into the first receiving cavity 11.

[0339] In some embodiments, the bracket 92 may be made of metal.

[0340] The technical solution of the embodiment of the present application supports the battery through the bracket 92 and fixes the battery through the strap ring 921, which facilitates the fixation of the battery and reduces the risk of interference caused by shaking of the battery during transportation.

[0341] Please refer to Figure 1 and Figure 13 In some embodiments, the bracket 92 includes a bracket body 922 and a support plate 923. The bracket body 922 has a multi-layer mesh structure. The support plate 923 is arranged on the upper surface of the bracket body 922 for contacting the battery.

[0342] In some embodiments, the bracket 92 may include a bracket body 922 , which is a multi-layer mesh structure, so that the bracket body 922 has a good buffering capacity and reduces the risk of damage to the battery during transportation.

[0343] In some embodiments, there may be multiple supporting plates 923 , and the multiple supporting plates 923 may be arranged at intervals along the first direction X or the second direction Y.

[0344] The box body 13 may include a box body 13 frame, so the bottom of the box body 13 frame has multiple hollow areas, which may cause the battery to be unevenly placed when accommodating the battery, resulting in the risk of the battery being easily shaken. In some embodiments, the battery is placed on the bracket 92 so that the battery can be better supported.

[0345] In some embodiments, the bracket 92 can be used to place batteries, which may be battery packs, battery modules, battery cells, etc.

[0346] The technical solution of the embodiment of the present application is to provide a multi-layer mesh structure bracket body 922 to carry the battery, thereby reducing the impact of vibration on the battery during transportation, which is beneficial to improving the reliability of the battery transportation protection device 1 in transporting the battery.

[0347] Please refer to Figure 11 and Figure 12 In some embodiments, the battery transport protection device further includes a locking mechanism 93, which is used to limit the bracket 92 in the opposite direction of the gravity direction Z.

[0348] In some embodiments, the locking mechanism 93 can be a rotating shaft that extends along the direction of gravity Z and is mounted on the side wall 131 of the box body 13. The rotating shaft can rotate along its own axis. A limit block is provided at the bottom of the rotating shaft. When the battery is located in the first accommodating cavity 11, the bracket 92 is located at the bottom of the first accommodating cavity 11. The limit block contacts the upper surface of the bracket 92, thereby limiting the bracket 92 in the direction of gravity Z.

[0349] When the battery needs to be removed, the rotating shaft is rotated so that the limiting block is no longer in contact with the bracket 92, so that the bracket 92 can be removed, thereby achieving the removal of the battery.

[0350] The technical solution of the embodiment of the present application limits the bracket 92 by providing a locking mechanism 93, thereby limiting the position of the battery, which is beneficial to improving the reliability of the battery transportation protection device 1 in transporting batteries.

[0351] Please refer to Figure 1 、 Figure 3 and Figure 12In some embodiments, a first positioning portion 94 is provided on the top of the box body 10, and a second positioning portion 941 matching the first positioning portion 94 is provided on the bottom of the box body 10 for stacking two battery transport protection devices 1 along the gravity direction Z.

[0352] In some embodiments, a first positioning portion 94 may be provided on the top of the box cover 12, and a second positioning portion 941 may be provided on the bottom of the box body 13. When two battery transport protective devices 1 are stacked, the first positioning portion 94 of one battery transport protective device 1 cooperates with the second positioning portion 941 of the other battery transport protective device 1.

[0353] In some embodiments, the number of first positioning portions 94 can be the same as the number of second positioning portions 941. The box body 10 can be a rectangular parallelepiped structure, the first positioning portions 94 can be set at the four corners of the top of the box body 10, and the second positioning portions 941 can be set at the four corners of the bottom of the box body 10.

[0354] In some embodiments, the first positioning portion 94 can be a plate bent to form an angle. The first positioning portion 94 is arranged at the top of the box body 10 and protrudes from the upper surface of the box cover 12. The second positioning portion 941 also has an angle that cooperates with the first positioning portion 94. The second positioning portion 941 is arranged at the bottom of the box body 10 and protrudes from the lower surface of the box body 13. When two battery transport protection devices 1 are stacked, multiple first positioning portions 94 are located on the outside of the second positioning portion 941, so that the second positioning portion 941 is limited in the horizontal direction, reducing the risk of the upper battery transport protection device 1 falling.

[0355] The technical solution of the embodiment of the present application facilitates the stacking of two battery transportation protection devices 1 by providing the first positioning portion 94 and the second positioning portion 941 to improve the convenience of battery transportation.

[0356] Please refer to Figure 12 In some embodiments, a forklift hole 95 is provided at the bottom of the box body 10 .

[0357] In some embodiments, a forklift hole 95 may be provided at the bottom of the box body 10 to facilitate a forklift to extend into the forklift hole 95 to carry the battery transport protective device 1 .

[0358] In some embodiments, the component for setting the forklift hole 95 can be set at the bottom of the box body 10 and protrude from the lower surface of the box body 13. The component for setting the forklift hole 95 can share the space in the gravity direction Z with the second positioning portion 941.

[0359] The technical solution of the embodiment of the present application is to facilitate the movement of the battery transportation protection device 1 by providing a forklift hole 95 at the bottom of the box body 10.

[0360] Please refer to Figure 1 , and refer to Figure 14 , Figure 14 Schematic diagram of a battery transport protection device provided in some embodiments of the present application. In some embodiments, the battery transport protection device 1 has a height h, which satisfies 700mm≤h≤1300mm.

[0361] The battery transport protection device 1 is usually transported by other means of transportation, and the space for accommodating the battery transport protection device 1 is usually 2000mm-2700mm high. That is, during normal transportation, only two battery transport protection devices 1 can be stacked vertically.

[0362] In some embodiments, by placing the pressure relief module 40 on the cover 12, the height of the battery transport protective device 1 is increased. At the same time, the pressure relief module 40 shares floor space with the first battery transport chamber 11, maintaining the horizontal dimensions of the battery transport protective device 1. Compared to the side of the pressure relief channel 121, the battery transport protective device 1 of this embodiment is taller and has a smaller horizontal dimension.

[0363] During transportation, the increased height still allows two battery transport protection devices 1 to be stacked vertically, without affecting transportation efficiency. Horizontally, the battery transport protection device 1 of this solution is smaller, allowing more battery transport protection devices 1 of this application to be transported, thereby improving transportation efficiency.

[0364] In some embodiments, the height of the battery transport protection device 1 is h, which meets the above conditions. The height of the battery transport protection device 1 can be any value among 700mm, 750mm, 800mm, 850mm, 900mm, 950mm, 1000mm, 1050mm, 1100mm, 1150mm, 1200mm, 1250mm, 1300mm, or a value between any two values.

[0365] In some embodiments, the height of the battery transport protection device 1 may be 1150 mm.

[0366] It should be noted that since the battery transport protection device 1 has a first positioning portion 94 protruding from the upper surface of the box cover 12 and a second positioning portion 941 on the lower surface of the box body 13, when two battery transport protection devices 1 are stacked, the first positioning portion 94 and the second positioning portion 941 share part of the space in the gravity direction Z. Therefore, the height of one battery transport protection device 1 can be 1150 mm, and the height of two battery transport protection devices 1 can be 2260 mm.

[0367] In the technical solution of the embodiment of the present application, the height of the battery transport protection device 1 meets the above conditions. On the one hand, it can accommodate more batteries, and on the other hand, it is convenient for the battery transport protection device 1 to be placed on a transportation vehicle for transportation.

[0368] Please refer to Figure 1 and Figure 3 In some embodiments, the battery transport protection device 1 includes a box body 10, which may include a box cover 12 and a box body 13. The box body 13 has a first opening 133, and the box cover 12 covers the first opening 133 to define a first accommodating cavity 11 together with the box body 13.

[0369] Please refer to Figure 3 、 Figures 8 to 10 A second accommodating chamber 122 is formed inside the box cover 12. The battery transportation protection device 1 also includes a pressure relief module 40. The pressure relief module 40 is arranged in the second accommodating chamber 122. A smoke inlet 41 and a smoke outlet 42 are respectively provided at both ends of the pressure relief module 40. A pressure relief channel 121 is formed inside the pressure relief module 40, and the pressure relief channel 121 connects the smoke inlet 41 and the smoke outlet 42.

[0370] By arranging a pressure relief module inside the box cover 12 , a pressure relief channel is defined, thereby reducing the risk of excessive air pressure in the first accommodating chamber 11 , and improving the reliability of the battery transportation protection device 1 in transporting batteries.

[0371] In some embodiments, the pressure relief module 40 includes a housing 43 and a filter element 44 . The internal space of the housing 43 forms a pressure relief channel 121 , and the filter element 44 is disposed in the pressure relief channel 121 .

[0372] When a battery generates gas due to thermal runaway, the gas usually contains toxic gases and solid impurities in the battery. By setting a filter element 44 in the pressure relief channel 121 to filter the gas in the pressure relief channel 121, it is helpful to reduce the risk of the discharged gas polluting the environment and causing losses.

[0373] In some embodiments, the filter element 44 includes a stainless steel fiber filter 441 , a glass fiber filter 442 , and a ceramic fiber filter 443 . The stainless steel fiber filter 441 , the glass fiber filter 442 , and the ceramic fiber filter 443 are arranged in sequence along the flow direction of the gas in the pressure relief channel 121 .

[0374] By sequentially arranging a stainless steel fiber filter 441, a glass fiber filter 442, and a ceramic fiber filter 443 along the flow direction of the gas in the pressure relief channel 121 to filter out toxic gases and solid impurities in the battery, the reliability of the filter element 44 is improved and the impact of the discharged gas on the outside is reduced.

[0375] Although the present application has been described with reference to preferred embodiments, various modifications may be made thereto and components may be substituted with equivalents without departing from the scope of the present application. In particular, the various technical features described in the various embodiments may be combined in any manner as long as there are no structural conflicts. The present application is not limited to the specific embodiments disclosed herein, but encompasses all technical solutions within the scope of the claims.

Claims

1. A battery transportation protection device, characterized in that: include: The box body comprises a box cover and a box body, wherein the box body has a first opening, and the box cover is engaged with the first opening to define together with the box body a first accommodating cavity for accommodating batteries; A pressure relief channel is formed inside the box cover, and the pressure relief channel is communicated with the first accommodating chamber and is used to discharge the gas in the first accommodating chamber.

2. The battery transport protection device according to claim 1, characterized in that: A second accommodating cavity is formed inside the box cover, and the battery transportation protection device also includes a pressure relief module, which is arranged in the second accommodating cavity. A smoke inlet and a smoke outlet are respectively provided at both ends of the pressure relief module. The pressure relief channel is formed inside the pressure relief module, and the pressure relief channel connects the smoke inlet and the smoke outlet.

3. The battery transport protection device according to claim 2, characterized in that: There are multiple pressure relief modules, and the multiple pressure relief modules are arranged in two rows. The two rows of pressure relief modules are spaced apart along the second direction. The multiple pressure relief modules in each row of pressure relief modules are arranged along the first direction. The first direction and the second direction are perpendicular to the direction of gravity. The smoke inlet of each row of the pressure relief modules is arranged at one end close to the pressure relief modules of another row, and the smoke outlet of each row of the pressure relief modules is arranged at one end away from the pressure relief modules of another row.

4. The battery transport protection device according to claim 3, characterized in that: The battery transportation protection device further includes an air collecting hood, which is arranged between two rows of pressure relief modules and connected to the plurality of pressure relief modules; The internal space of the gas collecting hood is connected to the first accommodating cavity and the plurality of smoke inlets.

5. The battery transport protection device according to claim 4, characterized in that: There are two gas collecting hoods, and the two gas collecting hoods are respectively connected to the two rows of pressure relief modules.

6. The battery transport protection device according to claim 2, characterized in that: The pressure relief module includes a shell and a filter element. The inner space of the shell forms the pressure relief channel, and the filter element is arranged in the pressure relief channel.

7. The battery transport protection device according to claim 6, characterized in that: The filter element includes a stainless steel fiber filter, a glass fiber filter and a ceramic fiber filter. Along the flow direction of the gas in the pressure relief channel, the stainless steel fiber filter, the glass fiber filter and the ceramic fiber filter are arranged in sequence.

8. The battery transport protection device according to claim 6, characterized in that: The pressure relief module further includes a guide plate, which is disposed in the shell.

9. The battery transport protection device according to claim 1, characterized in that: The battery transport protection device further comprises: a detection member, disposed in the box, and configured to detect environmental parameters within the first accommodating chamber; A fire-fighting mechanism is connected to the box cover, and is used for releasing a fire-fighting medium into the first containing chamber when the environmental parameter exceeds a threshold value.

10. The battery transport protection device according to claim 9, characterized in that: The fire-fighting mechanism is located above the first accommodating chamber, and is configured to be switchable between a first state and a second state. In the first state, the fire-fighting mechanism carries the fire-fighting medium; In the second state, the fire fighting mechanism releases the fire fighting medium.

11. The battery transport protection device according to claim 10, characterized in that: The fire fighting mechanism includes a first support plate, the first support plate being configured to rotate about a first axis, the first axis extending in a direction perpendicular to the direction of gravity; In the first state, the first support plate is in a horizontal position to carry the fire-fighting medium. In the second state, the first support plate is in a vertical position or an inclined position to release the fire-fighting medium.

12. The battery transport protection device according to claim 11, characterized in that: The fire-fighting mechanism further includes a second support plate, the second support plate being fixed relative to the box body and in a horizontal position to carry the fire-fighting medium, and the first support plate being rotatably connected to the second support plate; The detection component is arranged on the second supporting plate.

13. The battery transport protection device according to claim 9, characterized in that: The environmental parameter includes at least one of temperature, combustible gas concentration and gas pressure.

14. The battery transport protection device according to claim 9, characterized in that: The firefighting medium includes flame retardant microbeads.

15. The battery transport protection device according to claim 14, characterized in that: The flame retardant microbeads include at least one of glass microbeads, ceramic microbeads, and mineral microbeads.

16. The battery transport protection device according to claim 2, characterized in that: The box cover includes a box cover frame, a first thermal insulation lining and a second thermal insulation lining. The box cover frame supports the pressure relief module. The first thermal insulation lining and the second thermal insulation lining are both connected to the box cover frame. The first thermal insulation lining is arranged around the pressure relief module, and the second thermal insulation lining is arranged above the pressure relief module. The first thermal insulation lining and the second thermal insulation lining enclose to form the second accommodating cavity.

17. The battery transport protection device according to claim 16, characterized in that: The material of the first thermal insulation lining includes aerogel; the material of the second thermal insulation lining includes aerogel.

18. The battery transport protection device according to claim 16, characterized in that: The box cover also includes a box cover outer plate, which is connected to the box cover frame, and is arranged around the pressure relief module. The box cover outer cover is located on the outside of the first thermal insulation lining.

19. The battery transport protection device according to claim 18, characterized in that: The first heat-insulating lining is provided with a first pressure relief port, the box cover outer panel is provided with a second pressure relief port corresponding to the first pressure relief port, and the first pressure relief port is connected to the second pressure relief port and the pressure relief channel.

20. The battery transport protection device according to claim 16, characterized in that: The box cover further includes a box cover top plate, which is connected to the box cover frame and is located on a side of the second thermal insulation lining away from the pressure relief module.

21. The battery transport protection device according to claim 1, characterized in that: The box body includes a side wall and a bottom wall, the bottom wall is arranged opposite to the box cover, the side wall is arranged around the bottom wall, the lower end of the side wall is connected to the bottom wall, and the upper end of the side wall is connected to the box cover; The side wall includes a side wall lining, a side wall outer shell and a first flame retardant heat insulation layer, wherein the first flame retardant heat insulation layer is located between the side wall lining and the side wall outer shell.

22. The battery transport protection device according to claim 21, characterized in that: The first flame retardant heat insulation layer includes a first sub-flame retardant heat insulation layer and a second sub-flame retardant heat insulation layer, and the second sub-flame retardant heat insulation layer is located between the side wall lining and the first sub-flame retardant heat insulation layer; The thermal conductivity of the second flame retardant heat insulation sub-layer is smaller than the thermal conductivity of the first flame retardant heat insulation sub-layer.

23. The battery transport protection device according to claim 22, characterized in that: The first sub-flame retardant heat insulation layer includes aerogel, and the second sub-flame retardant heat insulation layer includes fiber fire-resistant material.

24. The battery transport protection device according to claim 21, characterized in that: The bottom wall comprises a bottom wall lining, a bottom wall outer shell and a second flame retardant heat insulation layer, wherein the second flame retardant heat insulation layer is located between the bottom wall lining and the bottom wall outer shell.

25. The battery transport protection device according to claim 24, characterized in that: The second flame retardant heat insulation layer includes a third sub-flame retardant heat insulation layer and a fourth sub-flame retardant heat insulation layer, and the third sub-flame retardant heat insulation layer is located between the bottom wall lining and the fourth sub-flame retardant heat insulation layer; The thermal conductivity of the third flame retardant and heat-insulating sub-layer is smaller than the thermal conductivity of the fourth flame retardant and heat-insulating sub-layer.

26. The battery transport protection device according to claim 25, characterized in that: The third sub-flame retardant heat-insulating layer includes a fiber fire-resistant material, and the fourth sub-flame retardant heat-insulating layer includes aerogel.

27. The battery transport protection device according to claim 25, characterized in that: The first flame retardant heat insulation layer includes a first sub-flame retardant heat insulation layer and a second sub-flame retardant heat insulation layer, and the second sub-flame retardant heat insulation layer is located between the side wall lining and the first sub-flame retardant heat insulation layer; The material of the first sub-flame retardant thermal insulation layer is the same as the material of the fourth sub-flame retardant thermal insulation layer, and the thickness of the fourth sub-flame retardant thermal insulation layer is greater than the thickness of the first sub-flame retardant thermal insulation layer; the material of the second sub-flame retardant thermal insulation layer is the same as the material of the third sub-flame retardant thermal insulation layer, and the thickness of the third sub-flame retardant thermal insulation layer is greater than the thickness of the second sub-flame retardant thermal insulation layer.

28. The battery transport protection device according to claim 21, characterized in that: The box body further comprises a box body frame, and the side walls and the bottom wall are both connected to the box body frame.

29. The battery transport protection device according to claim 28, characterized in that: The box cover includes a box cover frame, and the battery transportation protection device includes a first connecting frame and a second connecting frame, the first connecting frame is connected to the box body frame, the first connecting frame surrounds the first opening, and the second connecting frame is connected to the box cover frame; The outer circumference of one of the first connecting frame and the second connecting frame is an inclined surface, and the inner circumference of the other is an inclined surface, and the outer circumference is matched with the inner circumference.

30. The battery transport protection device according to claim 1, characterized in that: The top of the box body is provided with a first positioning portion, and the bottom of the box body is provided with a second positioning portion matching the first positioning portion, so as to be used for stacking two battery transport protection devices along the direction of gravity.

31. The battery transport protection device according to claim 1, characterized in that: The height of the battery transport protection device is h, which satisfies 700mm≤h≤1300mm.

Images