Battery transportation protection device

Abstract

The embodiment of the utility model provides a battery transportation protection device. The battery transportation protection device comprises a box body. 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. The box body comprises side walls and a bottom wall, the bottom wall and the box cover are oppositely arranged, the side walls surround the bottom wall, the lower ends of the side walls are connected with the bottom wall, and the upper ends of the side walls are connected with the box cover. Wherein the side wall comprises a side wall lining, a side wall shell and a first flame-retardant thermal insulation layer, and the first flame-retardant thermal insulation layer is located between the side wall lining and the side wall shell. The first containing cavity used for containing the battery is defined by the box cover and the box body, the risk that the battery is in thermal runaway due to the fact that the battery makes contact with the outside when the battery is transported is reduced, the first flame-retardant heat insulation layer is arranged between the side wall lining and the side wall shell, so that the box body has good heat insulation performance, and when the battery is in thermal runaway, the battery is prevented from being damaged. The influence of temperature on the outer surface of the box body is reduced.

Description

Technical Field

[0001] This application relates to the field of battery technology, and more specifically, to a battery transport protection device. Background Technology

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

[0003] In the development of battery technology, how to improve the reliability of battery transport protection devices is a technical problem that urgently needs to be solved. Utility Model Content

[0004] This application provides a battery transport protection device that can improve the reliability of battery transport.

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

[0006] In a first aspect, this application provides a battery transport protection device, which includes a housing. The housing includes a lid and a body, the body having a first opening, the lid closing onto the first opening to define a first receiving cavity for accommodating a battery together with the body. The body includes a side wall and a bottom wall, the bottom wall being disposed opposite to the lid, the side wall surrounding the bottom wall, the lower end of the side wall being connected to the bottom wall, and the upper end of the side wall being connected to the lid. The side wall includes a side wall liner, a side wall outer shell, and a first flame-retardant and heat-insulating layer, the first flame-retardant and heat-insulating layer being located between the side wall liner and the side wall outer shell.

[0007] The technical solution of this application embodiment defines a first receiving cavity for accommodating the battery by using a cover and a box body, reducing the risk of battery thermal runaway due to contact with the outside environment during battery transportation, and also reducing the risk of damage to the outside environment in the event of battery thermal runaway. By providing a first flame-retardant and heat-insulating layer between the inner lining of the side wall and the outer shell of the side wall, the box body has better heat insulation, reducing the impact of temperature on the outer surface of the box body in the event of battery thermal runaway.

[0008] In some embodiments, the first flame-retardant insulation layer includes a first sub-flame-retardant insulation layer and a second sub-flame-retardant insulation layer, wherein the second sub-flame-retardant insulation layer is located between the sidewall liner and the first sub-flame-retardant insulation layer. The thermal conductivity of the second sub-flame-retardant insulation layer is less than that of the first sub-flame-retardant insulation layer.

[0009] The technical solution of this application embodiment achieves gradient insulation of the box body with gradually increasing insulation performance from the outside to the inside by setting the second sub-flame-retardant insulation layer inside the first sub-flame-retardant insulation layer, and the thermal conductivity of the second sub-flame-retardant insulation layer is less than that of the first sub-flame-retardant insulation layer, so that the arrangement of the first flame-retardant insulation layer is more reasonable.

[0010] In some embodiments, the first sub-flame-retardant insulation layer comprises aerogel, and the second sub-flame-retardant insulation layer comprises fiber refractory material.

[0011] In the technical solution of this application embodiment, the aerogel has a low density and the fiber refractory material has a low thermal conductivity. By setting the aerogel as the first sub-flame-retardant and heat-insulating layer and the fiber refractory material as the second sub-flame-retardant and heat-insulating layer, the gradient heat insulation performance of the box body gradually increases from the outside to the inside, making the arrangement of the first flame-retardant and heat-insulating layer more reasonable, and at the same time helping to reduce the weight of the battery transportation protection device.

[0012] In some embodiments, the bottom wall includes a bottom wall liner, a bottom wall shell, and a second flame-retardant heat insulation layer, the second flame-retardant heat insulation layer being located between the bottom wall liner and the bottom wall shell.

[0013] The technical solution of this application embodiment provides a second flame-retardant and heat-insulating layer between the bottom wall lining and the bottom wall shell, which enables the box body to have better heat insulation and reduces the impact of temperature on the outer surface of the box body when the battery is thermally runaway.

[0014] In some embodiments, the second flame-retardant insulation layer includes a third sub-flame-retardant insulation layer and a fourth sub-flame-retardant insulation layer, wherein the third sub-flame-retardant insulation layer is located between the bottom wall lining and the fourth sub-flame-retardant insulation layer. The thermal conductivity of the third sub-flame-retardant insulation layer is less than that of the fourth sub-flame-retardant insulation layer.

[0015] The technical solution of this application embodiment achieves gradient insulation by setting the third sub-flame-retardant heat insulation layer inside the fourth sub-flame-retardant heat insulation layer, and the thermal conductivity of the third sub-flame-retardant heat insulation layer is less than that of the fourth sub-flame-retardant heat insulation layer, so that the heat insulation performance of the box body gradually increases from the outside to the inside, making the arrangement of the second flame-retardant heat insulation layer more reasonable.

[0016] In some embodiments, the third sub-flame-retardant insulation layer comprises a fiber refractory material, and the fourth sub-flame-retardant insulation layer comprises aerogel.

[0017] The technical solution of this application embodiment, by setting aerogel as the fourth sub-flame-retardant heat insulation layer and fiber refractory material as the third sub-flame-retardant heat insulation layer, achieves gradient heat insulation of the box body with gradually increasing heat insulation performance from the outside to the inside, making the arrangement of the second flame-retardant heat insulation layer more reasonable, and at the same time helping to reduce the weight of the battery transportation protection device.

[0018] In some embodiments, 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, wherein the second sub-flame-retardant heat insulation layer is located between the sidewall liner and the first sub-flame-retardant heat insulation layer. The material of the first sub-flame-retardant heat insulation layer is the same as that of the fourth sub-flame-retardant heat insulation layer, and the thickness of the fourth sub-flame-retardant heat insulation layer is greater than that of the first sub-flame-retardant heat insulation layer; the material of the second sub-flame-retardant heat insulation layer is the same as that of the third sub-flame-retardant heat insulation layer, and the thickness of the third sub-flame-retardant heat insulation layer is greater than that of the second sub-flame-retardant heat insulation layer.

[0019] In the technical solution of this application embodiment, when the battery experiences thermal runaway, the high-temperature substances generated will accumulate at the bottom of the casing body under the influence of gravity. By using the same material for the first sub-flame-retardant insulation layer and the fourth sub-flame-retardant insulation layer, and the same material for the second sub-flame-retardant insulation layer and the third sub-flame-retardant insulation layer, and by setting the thickness of the fourth sub-flame-retardant insulation layer to be greater than the thickness of the first sub-flame-retardant insulation layer, and the thickness of the third sub-flame-retardant insulation layer to be greater than the thickness of the second sub-flame-retardant insulation layer, the thermal conductivity of the bottom wall is lower than that of the side wall, resulting in better thermal insulation of the bottom wall. This reduces the impact of temperature on the outer surface of the bottom wall during battery thermal runaway.

[0020] In some embodiments, the box body further includes a box body frame, and the side walls and bottom walls are both connected to the box body frame.

[0021] The technical solution of this application embodiment improves the reliability of the pressure relief module by setting a box body frame to connect the side walls and the bottom wall.

[0022] In some embodiments, the lid includes a lid 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 and forms a first opening. The second connecting frame is connected to the lid frame. The outer peripheral surface of one of the first connecting frame and the inner peripheral surface of the other are inclined, and the outer peripheral surface and the inner peripheral surface are connected in a mating manner.

[0023] The technical solution of this application embodiment achieves the connection between the box cover and the box body by the cooperation of the inclined surfaces of the first connecting frame and the second connecting frame. It can limit the box cover and the box body in the horizontal direction, which helps to improve the reliability of the connection between the box cover and the box body. At the same time, the connection by the cooperation of the two inclined surfaces facilitates the positioning and installation when the box cover and the box body are connected.

[0024] In some embodiments, the battery transport protection device further includes a seal for sealing the gap between the first connecting frame and the second connecting frame.

[0025] The technical solution of this application embodiment reduces the risk of external impurities entering the first receiving cavity and damaging the battery by setting a sealing element in the gap between the first connecting frame and the second connecting frame. At the same time, when the battery thermally runs away, the sealing element can reduce the risk of high-temperature substances leaking from the gap between the first connecting frame and the second connecting frame and causing damage.

[0026] In some embodiments, the battery transport protection device further includes a detection element and a fire-fighting mechanism. The detection element is disposed in the housing and is used to detect environmental parameters within the first receiving cavity. The fire-fighting mechanism is connected to the housing cover and is used to release a fire-fighting medium into the first receiving cavity when the environmental parameters exceed a threshold.

[0027] In the technical solution of this application embodiment, when transporting the battery, the battery is housed in the first receiving cavity of the casing. When the battery experiences thermal runaway or catches fire, it may be accompanied by an increase in temperature, the generation of flammable gases, and an increase in gas pressure within the first receiving cavity. By setting up detection devices to monitor environmental parameters (temperature, concentration of flammable gases, gas pressure, etc.) within the first receiving cavity, when the environmental parameters detected by the detection devices exceed a threshold, a fire-fighting medium is released into the first receiving cavity by a fire-fighting mechanism. The fire-fighting medium has good heat insulation and fire suppression properties. The fire-fighting medium comes into contact with the battery to extinguish the fire (fire suppression, cooling, etc.), reducing the risk of losses (personal injury, property damage) caused by battery fire, and improving the reliability of the battery transport protection device.

[0028] In some embodiments, the fire-fighting mechanism is located above the first receiving cavity and is configured to switch between a first state and a second state, in which the fire-fighting mechanism carries the fire-fighting medium; and in the second state, the fire-fighting mechanism releases the fire-fighting medium.

[0029] The technical solution of this application embodiment, by setting the fire-fighting mechanism above the first receiving cavity, in the first state, the fire-fighting mechanism carries the fire-fighting medium, and 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, reducing the risk of battery fire and loss, and improving the reliability of battery transport protection device in transporting batteries.

[0030] In some embodiments, the fire-fighting mechanism includes a first support plate configured to rotate about a first axis, the extension direction of which is perpendicular to the direction of gravity. In a first state, the first support plate is in a horizontal position to carry the fire-fighting medium; in a second state, the first support plate is in a vertical or inclined position to release the fire-fighting medium.

[0031] The technical solution of this application embodiment realizes the bearing and release of fire-fighting medium by setting a rotating first support plate, reducing the risk of loss caused by battery fire, and improving the reliability of battery transport protection device in transporting batteries.

[0032] In some embodiments, the fire-fighting mechanism further includes a second support plate, which is fixedly disposed relative to the housing and is in a horizontal position to bear the fire-fighting medium. The first support plate is rotatably connected to the second support plate. A detection element is disposed on the second support plate.

[0033] The technical solution of this application embodiment improves the convenience of installing the first support plate by setting a second support plate for fixing the first support plate. Simultaneously, the joint support of the first and second support plates in bearing the fire-fighting medium improves the reliability of the fire-fighting medium's bearing capacity. Furthermore, the detection element is fixedly installed on the second support plate, which, being fixed to the housing, enhances the reliability of the detection element's installation.

[0034] In some embodiments, environmental parameters include at least one of temperature, combustible gas concentration, and gas pressure.

[0035] The technical solution of this application embodiment is that when a battery experiences thermal runaway, it is accompanied by an increase in temperature and the release of combustible gases (H2, CO, etc.). At the same time, the released gas changes the gas pressure in the first containment cavity. By detecting at least one of the temperature, combustible gas concentration, and gas pressure through a detection device, it is beneficial to quickly detect whether the transported battery has experienced thermal runaway, reduce the risk of battery fire and loss, and improve the reliability of the battery transport protection device for transporting batteries.

[0036] In some embodiments, the fire-fighting medium includes flame-retardant microbeads.

[0037] The timely solution of this application embodiment features flame-retardant microspheres with good heat absorption properties, which can expand to form a physical flame-retardant layer at high temperatures. Furthermore, the flame-retardant microspheres are highly lightweight. By using flame-retardant microspheres as a fire-fighting medium, the risk of battery fire damage is reduced, improving the reliability of battery transport protection devices and reducing the weight of the battery transport protection devices.

[0038] In some embodiments, flame-retardant microspheres include at least one of glass microspheres, ceramic microspheres, and mineral microspheres.

[0039] The technical solution of this application embodiment uses at least one of glass microspheres, ceramic microspheres, and mineral microspheres as the fire-fighting medium to reduce the risk of loss caused by battery fire, which is beneficial to improving the reliability of battery transport protection device and reducing the weight of battery transport protection device.

[0040] In some embodiments, a pressure relief channel is formed inside the lid to discharge gas from the first accommodating cavity.

[0041] The technical solution of this application embodiment addresses the issue that battery thermal runaway is typically accompanied by gas generation. Gas accumulation within the first containment cavity can lead to increased pressure, potentially causing an explosion or forcing open the casing, resulting in damage. By providing a pressure relief channel to expel the gas generated by the battery, the risk of excessive pressure within the first containment cavity is reduced, improving the reliability of the battery transport protection device. Furthermore, by placing the pressure relief channel inside the casing cover, i.e., above the first containment cavity, the channel shares the same floor space as the casing body, reducing the horizontal dimensions of the battery transport protection device and facilitating its spatial arrangement during transport.

[0042] In some embodiments, a second receiving cavity is formed inside the cover, and the battery transport protection device further includes a plurality of pressure relief modules disposed in the second receiving cavity. Each pressure relief module has a smoke inlet and a smoke outlet at both ends, and a pressure relief channel is formed inside the pressure relief module, which connects the smoke inlet and the smoke outlet.

[0043] The technical solution of this application embodiment, by setting a pressure relief module inside the box cover, defines a pressure relief channel, reduces the risk of excessive air pressure in the first accommodating cavity, and helps to improve the reliability of the battery transport protection device in transporting batteries.

[0044] In some embodiments, multiple pressure relief modules are arranged in two columns, with the two columns spaced apart along a second direction. Multiple pressure relief modules in each column are arranged along a first direction, and the first and second directions are perpendicular to the direction of gravity. The smoke inlet of each column is located at the end closest to the other column, and the smoke outlet of each column is located at the end furthest from the other column.

[0045] The technical solution of this application embodiment, by arranging the smoke inlets of the two rows of pressure relief modules opposite to each other, allows the gas in the first receiving cavity to be discharged simultaneously from the two rows of pressure relief modules in the middle, which helps to improve the efficiency of gas discharge, reduce the risk of excessive gas pressure in the first receiving cavity, and improve the reliability of the battery transport protection device in transporting batteries.

[0046] In some embodiments, the battery transport protection device further includes a gas collection hood disposed between two rows of pressure relief modules and connected to multiple pressure relief modules. The internal space of the gas collection hood connects a first receiving cavity and multiple smoke inlets.

[0047] The technical solution of this application embodiment, by setting a gas collection hood connecting the connecting hole and the smoke inlet, allows the gas in the first receiving cavity to be collected in the gas collection hood, which facilitates the pressure relief module to discharge the gas in the first receiving cavity, reduces the risk of excessive gas pressure in the first receiving cavity, and helps to improve the reliability of the battery transport protection device in transporting batteries.

[0048] In some embodiments, the pressure relief module includes a housing and a filter element, the internal space of the housing forming a pressure relief channel, and the filter element disposed within the pressure relief channel.

[0049] In the technical solution of this application embodiment, when the battery thermal runaway generates gas, the gas usually contains toxic gases and solid impurities from the battery. By setting a filter in the pressure relief channel to filter the gas in the pressure relief channel, it is beneficial to reduce the risk of the discharged gas polluting the environment and causing losses.

[0050] In some embodiments, the filter element includes a stainless steel fiber filter, a glass fiber filter, and a ceramic fiber filter, arranged sequentially along the gas flow direction in the pressure relief channel.

[0051] In the technical solution of this application embodiment, the gas temperature generated during battery thermal runaway is high. The stainless steel limiting filter can withstand the high temperature. By sequentially setting a stainless steel fiber filter, a glass fiber filter, and a ceramic fiber filter along the gas flow direction in the pressure relief channel, toxic gases and solid impurities in the battery are filtered, which helps to improve the reliability of the filter and reduce the impact of the discharged gas on the outside world.

[0052] In some embodiments, the pressure relief module further includes a flow guide plate disposed within the housing.

[0053] The technical solution of this application embodiment reduces the flow rate of gas in the pressure relief channel by setting a guide plate inside the housing, increases the contact time between the gas passing through the pressure relief channel and the filter element, which helps to improve the filtration effect of the filter element and reduce the impact of the discharged gas on the outside world.

[0054] In some embodiments, the lid includes a lid frame, a first heat-insulating liner and a second heat-insulating liner. The lid frame carries a pressure relief module. The first heat-insulating liner and the second heat-insulating liner are both connected to the lid frame. The first heat-insulating liner is disposed around the pressure relief module, and the second heat-insulating liner is disposed above the pressure relief module. The first heat-insulating liner and the second heat-insulating liner together form a second receiving cavity.

[0055] The technical solution of this application embodiment improves the reliability of the pressure relief module by setting a box cover frame to support the pressure relief module. By setting a first heat-insulating liner and a second heat-insulating liner around and above the pressure relief module, the box cover has better heat insulation, reducing the impact of temperature on the outer surface of the box cover when discharging high-temperature gas.

[0056] In some embodiments, the material of the first thermal insulation liner includes aerogel; the material of the second thermal insulation liner includes aerogel.

[0057] In the technical solution of this application embodiment, aerogel has good heat insulation performance and low density. By setting aerogel as the material of the first heat insulation liner and the second heat insulation liner, the box cover has good heat insulation performance, and at the same time, it helps to reduce the weight of the battery transportation protection device.

[0058] In some embodiments, the cover also includes an outer cover panel connected to the cover frame, the outer cover panel surrounding the pressure relief module, and the outer cover being located outside the first heat insulation liner.

[0059] The technical solution of this application embodiment reduces the risk of the first heat insulation lining being damaged, thereby affecting the heat insulation performance of the box cover, by setting an outer cover plate on the outside of the first heat insulation lining, which helps to improve the reliability of the box cover.

[0060] In some embodiments, the cover also includes a cover top plate, which is connected to the cover frame and is located on the side of the second heat insulation liner away from the pressure relief module.

[0061] The technical solution of this application embodiment reduces the risk of the second heat insulation lining being damaged, thereby affecting the heat insulation performance of the box cover, by setting a box cover top plate on the outside of the second heat insulation lining, which helps to improve the reliability of the box cover.

[0062] In some embodiments, a first positioning part is provided on the top of the box, and a second positioning part matching the first positioning part is provided on the bottom of the box, for stacking two battery transport protection devices along the direction of gravity.

[0063] The technical solution of this application embodiment, by setting a first positioning part and a second positioning part to cooperate, facilitates the stacking of two battery transport protection devices, thereby improving the convenience of battery transport.

[0064] In some embodiments, the height of the battery transport protective device is h, which satisfies 700mm≤h≤1300mm.

[0065] The technical solution of this application embodiment has a battery transport protection device whose height 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 to be placed on a vehicle for transportation.

[0066] Additional aspects and advantages of this application will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of this application. Attached Figure Description

[0067] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0068] Figure 1 Exploded view of the structure of the battery transport protection device provided in some embodiments of this application;

[0069] Figure 2 A schematic diagram of a box lid provided for some embodiments of this application;

[0070] Figure 3 This is an exploded view of the structure of the box lid provided in some embodiments of this application;

[0071] Figure 4 A schematic diagram of a fire-fighting organization in a first state provided for some embodiments of this application;

[0072] Figure 5 for Figure 4 Enlarged view of point A in the middle;

[0073] Figure 6 A schematic diagram of a fire-fighting organization in a second state provided for some embodiments of this application;

[0074] Figure 7 for Figure 6 Enlarged view of point B in the middle;

[0075] Figure 8 A schematic diagram of a pressure relief module provided in some embodiments of this application;

[0076] Figure 9 This is a schematic diagram of the structure of a pressure relief module provided in some embodiments of this application;

[0077] Figure 10 A schematic diagram of a filter element provided in some embodiments of this application;

[0078] Figure 11 This is an exploded view of the structure of the box body provided in some embodiments of this application;

[0079] Figure 12 A schematic diagram of the box body skeleton provided in some embodiments of this application;

[0080] Figure 13 for Figure 1 Enlarged view of point C in the middle;

[0081] Figure 14 This is a schematic diagram of a battery transport protection device provided in some embodiments of this application.

[0082] Icons: 1-Battery transport protective device; 10-Box body; 11-First receiving cavity; 12-Box cover; 121-Pressure relief channel; 122-Second receiving cavity; 123-Box cover frame; 124-First heat insulation liner; 1241-First pressure relief port; 125-Second heat insulation liner; 126-Box cover outer panel; 1261-Second pressure relief port; 127-Box cover top plate; 128-First lifting part; 13-Box body; 131-Side wall; 1311- 1312-Side wall lining; 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-Inspection piece; 30-Fire protection mechanism; 31-Connecting hole; 32-First support plate; 33-First locking element; 34-Drive element; 35-Second support plate; 36-Second opening; 37-Linkage shaft; 38-Mounting base; 39-Second locking element; 391-Locking hole; 40-Pressure relief module; 41-Smoke inlet; 42-Smoke outlet; 43-Housing; 44-Filter element; 441-Stainless steel fiber filter screen; 442-Glass fiber filter screen; 443-Ceramic fiber Filter screen; 45-Guide plate; 50-Fire-fighting medium; 60-Gas collection hood; 70-First connecting frame; 71-Second connecting frame; 80-Seal; 90-Lock; 91-Bracket; 92-Bracket; 921-Binding ring; 922-Bracket body; 923-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 Implementation

[0083] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0084] Unless otherwise defined, all technical and scientific terms used in this application have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains; the terminology used in the description of this application is for the purpose of describing particular embodiments only and is not intended to limit the application; the terms "comprising" and "having," and any variations thereof, in the description, claims, and accompanying drawings of this application are intended to cover non-exclusive inclusion. The terms "first," "second," etc., in the description, claims, or accompanying drawings of this application are used to distinguish different objects, not to describe a specific order or hierarchy.

[0085] In this application, the reference to "embodiment" means that a specific feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a mutually exclusive, independent, or alternative embodiment. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described in this application can be combined with other embodiments.

[0086] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "attachment" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0087] In this application, the term "and / or" is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or the second direction can represent three cases: A existing alone, A and the second direction existing simultaneously, and the second direction existing alone. Additionally, in this application, the character " / " generally indicates that the preceding and following related objects have an "or" relationship.

[0088] In this application, "multiple" refers to two or more (including two), and similarly, "multiple groups" refers to two or more (including two), and "multiple pieces" refers to two or more (including two).

[0089] The battery mentioned in the embodiments of this application can be a battery device, which may include one or more battery cell assemblies for providing voltage and capacity. A battery cell assembly may include multiple battery cells, which are connected in series, parallel, or mixed connections via a busbar.

[0090] In some embodiments, a battery cell assembly is typically formed by arranging multiple battery cells; as an example, a battery cell assembly can be a battery module, which is formed by arranging and fixing multiple battery cells into a single module. As an example, a battery module can be formed by bundling multiple battery cells together with cable ties.

[0091] In some embodiments, the battery may be a battery pack, which includes a battery housing and one or more individual battery cells housed within the battery housing.

[0092] As an example, a battery cell assembly can be a battery module, which can be housed in a battery housing by fixing the battery module in the battery housing.

[0093] As an example, battery cell assemblies can also be housed in a battery housing by directly fixing multiple battery cells to the battery housing.

[0094] As an example, the battery housing may include a first battery housing and a second battery housing. The first battery housing and the second battery housing are fastened together to form a closed space inside the battery housing to house the individual battery cells. Here, "closed" refers to covering or closing, and can be either sealed or unsealed. The first battery housing may be a top cover or a bottom plate.

[0095] As an example, the battery enclosure may include a top cover, a frame, and a bottom plate. The top cover and bottom plate are respectively connected to the frame, so that the interior of the battery enclosure forms an enclosed space to house individual battery cells.

[0096] In this embodiment of the application, the battery cell can be a secondary battery, which refers to a battery cell that can be recharged to activate the active materials and continue to be used after the battery cell has been discharged.

[0097] The battery cell may be, but is not limited to, lithium-ion battery, sodium-ion battery, sodium-lithium-ion battery, lithium metal battery, sodium metal battery, lithium-sulfur battery, magnesium-ion battery, nickel-metal hydride battery, nickel-cadmium battery, lead-acid battery, etc.

[0098] The development of battery technology must take into account multiple design factors, such as energy density, cycle life, discharge capacity, and charge / discharge rate. In addition, improving the reliability of battery transport protection devices during battery transportation is also a key consideration.

[0099] Batteries are typically transported using battery transport protection devices. During transport, batteries may catch fire for various reasons, such as thermal runaway or collisions. A fire causes the internal temperature of the battery transport protection device to rise, and heat is transferred to its outer surface, resulting in a high external surface temperature. This affects the external environment of the battery transport protection device, posing a risk of economic loss and personal injury, and compromising the reliability of the battery transport protection device during battery transport.

[0100] Based on the above considerations, in order to solve the problem of battery fires affecting the reliability of battery transport protection devices, this application provides a battery transport protection device, which includes a housing. The housing includes a lid and a body, the body having a first opening, and the lid closing onto the first opening to define a first receiving cavity for accommodating the battery together with the body. The body includes a side wall and a bottom wall, the bottom wall being disposed opposite to the lid, the side wall surrounding the bottom wall, the lower end of the side wall being connected to the bottom wall, and the upper end of the side wall being connected to the lid. The side wall includes a side wall liner, a side wall outer shell, and a first flame-retardant and heat-insulating layer, the first flame-retardant and heat-insulating layer being located between the side wall liner and the side wall outer shell.

[0101] The first receiving cavity for housing the battery is defined by the cover and the body of the box, reducing the risk of battery thermal runaway due to contact with the outside environment during battery transportation, and also reducing the risk of damage to the outside environment in the event of battery thermal runaway. By setting a first flame-retardant and heat-insulating layer between the inner lining and the outer shell of the side wall, the box body has good heat insulation properties, reducing the impact of temperature on the outer surface of the box body in the event of battery thermal runaway.

[0102] The technical solutions described in the embodiments of this application can be used for battery transportation, such as normal battery transportation or recycling of used batteries.

[0103] Please refer to Figure 1 and Figure 11 , Figure 1 This is an exploded view of the structure of the battery transport protection device provided in some embodiments of this application. Figure 11This is an exploded view of the structure of the box body provided in some embodiments of this application. Embodiments of this application provide a battery transport protection device 1, which includes a box body 10. The box body 10 includes a lid 12 and a box body 13. The box body 13 has a first opening 133, and the lid 12 closes to the first opening 133 to define a first receiving cavity 11 together with the box body 13. The box body 13 includes a side wall 131 and a bottom wall 132. The bottom wall 132 is disposed opposite to the lid 12, and the side wall 131 surrounds the bottom wall 132. The lower end of the side wall 131 is connected to the bottom wall 132, and the upper end of the side wall 131 is connected to the lid 12. The side wall 131 includes a side wall liner 1311, a side wall shell 1312, and a first flame-retardant and heat-insulating layer 1313, which is located between the side wall liner 1311 and the side wall shell 1312.

[0104] In some embodiments, the outer shell of the housing 10 may be made of metal, or both the outer shell and the inner liner of the housing 10 may be made of metal.

[0105] In addition, both the outer shell and the inner liner of the box 10 can be made of metal, and heat insulation material can be installed between the outer shell and the inner liner.

[0106] Batteries are prone to thermal runaway and fire when exposed to high temperatures or subjected to impacts. In some embodiments, the battery can be housed within the first receiving cavity 11 of the housing 10 to protect it, reduce the risk of thermal runaway, and isolate it from external temperatures during transportation.

[0107] In some embodiments, when a battery experiences thermal runaway, the housing 10 contains the battery within the first receiving cavity 11. When thermal runaway leads to a battery fire, the housing 10 also isolates the battery from the external environment, reducing the risk of property damage and personal injury. Furthermore, during battery transport, multiple battery transport protection devices 1 may be transported together. If a battery in one of these devices catches fire, the risk of the fire affecting batteries in other transport protection devices 1 is reduced, minimizing the risk of further damage.

[0108] In some embodiments, a first opening 133 may be formed on the top of the box body 13, through which the battery enters the box body 13, and the box cover 12 closes the first opening 133 so that the battery is accommodated in the first receiving cavity 11.

[0109] In some embodiments, the bottom wall 132 may be disposed opposite to the lid 12 in the gravity direction Z, and the thickness direction of the bottom wall 132 may be parallel to the thickness direction of the lid 12.

[0110] In some embodiments, the sidewall 131 may include a sidewall liner 1311 for forming a first receiving cavity 11. When the battery is located in the first receiving cavity 11, the sidewall liner 1311 is the portion of the sidewall 131 facing the battery, and the sidewall housing 1312 is the portion of the sidewall 131 facing away from the battery.

[0111] In some embodiments, the material of the sidewall outer shell 1312 and the material of the sidewall inner liner 1311 can both be metal.

[0112] In some embodiments, the material of the sidewall outer shell 1312 and the material of the sidewall inner liner 1311 may be the same or different.

[0113] When the battery catches fire, the temperature of the first receiving cavity 11 will rise. In order to reduce the risk of the heat energy in the first receiving cavity 11 being transferred to the outer surface of the box body 13 and causing the outer surface temperature of the box body 13 to be too high, in some embodiments, a first flame-retardant heat insulation layer 1313 is provided between the side wall liner 1311 and the side wall shell 1312.

[0114] In some embodiments, the first flame-retardant and heat-insulating layer 1313 may be made of aerogel, fiber refractory material, glass wool, etc.

[0115] The technical solution of this application embodiment defines a first receiving cavity 11 for accommodating the battery by using the cover 12 and the body 13, thereby reducing the risk of battery thermal runaway due to contact with the outside environment during battery transportation, and also reducing the risk of damage to the outside environment in the event of battery thermal runaway. By providing a first flame-retardant and heat-insulating layer 1313 between the inner lining 1311 and the outer shell 1312, the body 13 of the box has better heat insulation properties, reducing the impact of temperature on the outer surface of the body 13 of the box in the event of battery thermal runaway.

[0116] Please refer to Figure 1 and Figure 11 In some embodiments, the first flame-retardant heat insulation layer 1313 includes a first sub-flame-retardant heat insulation layer 1313a and a second sub-flame-retardant heat insulation layer 1313b, the second sub-flame-retardant heat insulation layer 1313b being located between the sidewall lining 1311 and the first sub-flame-retardant heat insulation layer 1313a. The thermal conductivity of the second sub-flame-retardant heat insulation layer 1313b is less than that of the first sub-flame-retardant heat insulation layer 1313a.

[0117] When the battery catches fire, heat is transferred outward from the first receiving cavity 11, causing the temperature of the box body 13 to gradually rise from the outside to the inside. In some embodiments, the first flame-retardant heat insulation layer 1313 is divided into two layers, that is, the first flame-retardant heat insulation layer 1313 includes a first sub-flame-retardant heat insulation layer 1313a and a second sub-flame-retardant heat insulation layer 1313b, wherein the thermal conductivity of the second sub-flame-retardant heat insulation layer 1313b is less than that of the first sub-flame-retardant heat insulation layer 1313a, that is, the heat insulation performance of the second sub-flame-retardant heat insulation layer 1313b is better, and the second sub-flame-retardant heat insulation layer 1313b is located between the side wall lining 1311 and the first sub-flame-retardant heat insulation layer 1313a, that is, the second sub-flame-retardant heat insulation layer 1313b is located inside the first sub-flame-retardant heat insulation layer 1313a, and is used to form the first heat insulation, after isolating most of the heat in the first receiving cavity 11, the remaining small part of the heat is then isolated by the first sub-flame-retardant heat insulation layer 1313a.

[0118] The technical solution of this application embodiment achieves gradient insulation of the box body 13 from the outside to the inside by setting the second sub-flame-retardant heat insulation layer 1313b inside the first sub-flame-retardant heat insulation layer 1313a, and the thermal conductivity of the second sub-flame-retardant heat insulation layer 1313b is less than that of the first sub-flame-retardant heat insulation layer 1313a, so that the heat insulation performance of the box body 13 gradually increases from the outside to the inside, making the arrangement of the first flame-retardant heat insulation layer 1313 more reasonable.

[0119] Please refer to Figure 1 and Figure 11 In some embodiments, the first sub-flame-retardant heat insulation layer 1313a comprises aerogel, and the second sub-flame-retardant heat insulation layer 1313b comprises fiber refractory material.

[0120] In some embodiments, the material of the first sub-flame-retardant heat insulation layer 1313a can be aerogel, such as silicate aerogel, alumina aerogel, titanium dioxide aerogel, etc.

[0121] In some embodiments, the first sub-flame-retardant heat insulation layer 1313a may be a silicate-based aerogel board.

[0122] In some embodiments, the material of the second sub-flame-retardant heat insulation layer 1313b can be aluminum silicate refractory fiber, chromium-containing aluminum silicate refractory fiber, zirconium oxide refractory fiber, etc.

[0123] In some embodiments, the second sub-flame-retardant heat insulation layer 1313b may be a ceramic fiber board.

[0124] In the technical solution of this application embodiment, the aerogel has a low density and the fiber refractory material has a low thermal conductivity. By setting the aerogel as the first sub-flame-retardant heat insulation layer 1313a and the fiber refractory material as the second sub-flame-retardant heat insulation layer 1313b, the heat insulation performance of the box body 13 gradually increases from the outside to the inside, making the arrangement of the first flame-retardant heat insulation layer 1313 more reasonable, and at the same time helping to reduce the weight of the battery transport protection device 1.

[0125] Please refer to Figure 1 and Figure 11 In some embodiments, the bottom wall 132 includes a bottom wall liner 1321, a bottom wall shell 1322, and a second flame-retardant and heat-insulating layer 1323, the second flame-retardant and heat-insulating layer 1323 being located between the bottom wall liner 1321 and the bottom wall shell 1322.

[0126] In some embodiments, the bottom wall liner 1321, the second flame-retardant and heat-insulating layer 1323, and the bottom wall shell 1322 are arranged sequentially in the gravity direction Z.

[0127] In some embodiments, the bottom wall 132 may include a bottom wall liner 1321 for forming a first receiving cavity 11. When the battery is located in the first receiving cavity 11, the bottom wall liner 1321 is the portion of the bottom wall 132 facing the battery, and the bottom wall housing 1322 is the portion of the bottom wall 132 facing away from the battery.

[0128] In some embodiments, the material of the bottom wall outer shell 1322 and the material of the bottom wall inner liner 1321 can both be metal.

[0129] In some embodiments, the material of the bottom wall outer shell 1322 and the material of the bottom wall inner liner 1321 may be the same or different.

[0130] When the battery catches fire, the temperature of the first receiving cavity 11 will rise. In order to reduce the risk of the heat energy in the first receiving cavity 11 being transferred to the outer surface of the box body 13 and causing the outer surface temperature of the box body 13 to be too high, in some embodiments, a second flame-retardant heat insulation layer 1323 is provided between the bottom wall liner 1321 and the bottom wall shell 1322.

[0131] In some embodiments, the material of the second flame-retardant and heat-insulating layer 1323 may be aerogel, fiber refractory material, glass wool, etc.

[0132] The technical solution of this application embodiment provides a second flame-retardant and heat-insulating layer 1323 between the bottom wall lining 1321 and the bottom wall outer shell 1322, which makes the box body 13 have better heat insulation and reduces the impact of temperature on the outer surface of the box body 13 when the battery thermal runaway occurs.

[0133] Please refer to Figure 1 and Figure 11In some embodiments, the second flame-retardant heat insulation layer 1323 includes a third sub-flame-retardant heat insulation layer 1323a and a fourth sub-flame-retardant heat insulation layer 1323b, wherein the third sub-flame-retardant heat insulation layer 1323a is located between the bottom wall lining 1321 and the fourth sub-flame-retardant heat insulation layer 1323b. The thermal conductivity of the third sub-flame-retardant heat insulation layer 1323a is less than that of the fourth sub-flame-retardant heat insulation layer 1323b.

[0134] When the battery catches fire, heat is transferred outward from the first receiving cavity 11, causing the temperature of the box body 13 to gradually rise from the outside to the inside. In some embodiments, the second flame-retardant heat insulation layer 1323 is divided into two layers, namely, the second flame-retardant heat insulation layer 1323 includes a third sub-flame-retardant heat insulation layer 1323a and a fourth sub-flame-retardant heat insulation layer 1323b. The thermal conductivity of the third sub-flame-retardant heat insulation layer 1323a is less than that of the fourth sub-flame-retardant heat insulation layer 1323b, that is, the heat insulation performance of the third sub-flame-retardant heat insulation layer 1323a is better. The third sub-flame-retardant heat insulation layer 1323a is located between the bottom wall lining 1321 and the fourth sub-flame-retardant heat insulation layer 1323b, that is, the third sub-flame-retardant heat insulation layer 1323a is located inside the fourth sub-flame-retardant heat insulation layer 1323b, and is used to form the first heat insulation, after isolating most of the heat in the first receiving cavity 11, the remaining small part of the heat is then isolated by the fourth sub-flame-retardant heat insulation layer 1323b.

[0135] The technical solution of this application embodiment achieves gradient insulation of the box body 13 from the outside to the inside by setting the third sub-flame-retardant heat insulation layer 1323a inside the fourth sub-flame-retardant heat insulation layer 1323b, and the thermal conductivity of the third sub-flame-retardant heat insulation layer 1323a is less than that of the fourth sub-flame-retardant heat insulation layer 1323b, so that the arrangement of the second flame-retardant heat insulation layer 1323 is more reasonable.

[0136] Please refer to Figure 1 and Figure 11 In some embodiments, the third sub-flame-retardant and heat-insulating layer 1323a comprises a fiber refractory material, and the fourth sub-flame-retardant and heat-insulating layer 1323b comprises aerogel.

[0137] In some embodiments, the material of the fourth sub-flame-retardant heat insulation layer 1323b can be aerogel, such as silicate aerogel, alumina aerogel, titanium dioxide aerogel, etc.

[0138] In some embodiments, the fourth sub-flame-retardant and heat-insulating layer 1323b can be a silicate-based aerogel board.

[0139] In some embodiments, the material of the third sub-flame-retardant heat insulation layer 1323a may be aluminosilicate refractory fiber, chromium-containing aluminosilicate refractory fiber, zirconium oxide refractory fiber, etc.

[0140] In some embodiments, the third sub-flame-retardant heat insulation layer 1323a may be a ceramic fiber board.

[0141] The technical solution of this application embodiment, by setting aerogel as the fourth sub-flame-retardant heat insulation layer 1323b and setting fiber refractory material as the third sub-flame-retardant heat insulation layer 1323a, achieves gradient heat insulation of the box body 13 with gradually increasing heat insulation performance from the outside to the inside, making the arrangement of the second flame-retardant heat insulation layer 1323 more reasonable, and at the same time helping to reduce the weight of the battery transport protection device 1.

[0142] Please refer to Figure 1 and Figure 11 In some embodiments, the first flame-retardant heat insulation layer 1313 includes a first sub-flame-retardant heat insulation layer 1313a and a second sub-flame-retardant heat insulation layer 1313b, the second sub-flame-retardant heat insulation layer 1313b being located between the sidewall liner 1311 and the first sub-flame-retardant heat insulation layer 1313a. The material of the first sub-flame-retardant heat insulation layer 1313a is the same as the material of the fourth sub-flame-retardant heat insulation layer 1323b, and the thickness of the fourth sub-flame-retardant heat insulation layer 1323b is greater than the thickness of the first sub-flame-retardant heat insulation layer 1313a; the material of the second sub-flame-retardant heat insulation layer 1313b is the same as the material of the third sub-flame-retardant heat insulation layer 1323a, and the thickness of the third sub-flame-retardant heat insulation layer 1323a is greater than the thickness of the second sub-flame-retardant heat insulation layer 1313b.

[0143] In some embodiments, the material of the first sub-flame-retardant heat insulation layer 1313a is the same as that of the fourth sub-flame-retardant heat insulation layer 1323b, and the thickness of the fourth sub-flame-retardant heat insulation layer 1323b is greater than that of the first sub-flame-retardant heat insulation layer 1313a, thereby making the heat insulation effect of the fourth sub-flame-retardant heat insulation layer 1323b better than that of the first sub-flame-retardant heat insulation layer 1313a.

[0144] The material of the second sub-flame-retardant heat insulation layer 1313b is the same as that of the third sub-flame-retardant heat insulation layer 1323a. The thickness of the third sub-flame-retardant heat insulation layer 1323a is greater than that of the second sub-flame-retardant heat insulation layer 1313b, so that the heat insulation effect of the third sub-flame-retardant heat insulation layer 1323a is better than that of the second sub-flame-retardant heat insulation layer 1313b.

[0145] That is, the heat insulation effect of the lower second flame-retardant heat insulation layer 1323 is better than that of the surrounding first flame-retardant heat insulation layer 1313. When the battery catches fire, the high-temperature substances generated (such as liquids or fluids generated by battery melting) gather on the bottom wall 132 under the action of gravity, which makes the flame-retardant heat insulation performance required for the bottom wall 132 higher. Therefore, the heat insulation effect of the lower second flame-retardant heat insulation layer 1323 is set to be better than that of the surrounding first flame-retardant heat insulation layer 1313.

[0146] In the technical solution of this application embodiment, when the battery experiences thermal runaway, the high-temperature substances generated will accumulate at the bottom of the casing 13 under the influence of gravity. By setting the material of the first sub-flame-retardant heat insulation layer 1313a to be the same as that of the fourth sub-flame-retardant heat insulation layer 1323b, and setting the material of the second sub-flame-retardant heat insulation layer 1313b to be the same as that of the third sub-flame-retardant heat insulation layer 1323a, and setting the thickness of the fourth sub-flame-retardant heat insulation layer 1323b to be greater than the thickness of the first sub-flame-retardant heat insulation layer 1313a, and setting the thickness of the third sub-flame-retardant heat insulation layer 1323a to be greater than the thickness of the second sub-flame-retardant heat insulation layer 1313b, the thermal conductivity of the bottom wall 132 is lower than that of the side wall 131, resulting in better heat insulation of the bottom wall 132. This reduces the impact of temperature on the outer surface of the bottom wall 132 during battery thermal runaway.

[0147] Please refer to Figure 1 and Figure 11 and refer to Figure 12 , Figure 12 This is a schematic diagram of a box body frame provided in some embodiments of this application. In some embodiments, the box body 13 further includes a box body frame 134, with side walls 131 and bottom walls 132 connected to the box body frame 134.

[0148] In some embodiments, the box body frame 134 can be a frame formed by welding metal tubes.

[0149] In some embodiments, the pressure relief module 40 may be disposed in the housing frame 134 to improve the strength of the housing 10, thereby improving the reliability of the battery placement.

[0150] In some embodiments, the box body frame 134 can be divided into two frames, with the bottom wall liner 1321 and the side wall liner 1311 disposed in the inner frame, and the bottom wall shell 1322 and the side wall shell 1312 disposed in the outer frame, and the first flame-retardant heat insulation layer 1313 and the second flame-retardant heat insulation layer 1323 disposed in the space between the two frames.

[0151] In some embodiments, the bottom wall liner 1321, the bottom wall shell 1322, the side wall liner 1311, and the side wall shell 1312 can be plates, wherein the plates can be bent to form reinforcing ribs to improve the structural strength of the plates.

[0152] In some embodiments, the plates can be bent to form an angle, and the bent plates can cover the support beams around the box body frame 134 to improve the support strength of the box body frame 134.

[0153] The technical solution of this application embodiment, by setting a box body frame 134 for connecting the side wall 131 and the bottom wall 132, helps to improve the reliability of the pressure relief module 40.

[0154] Please refer to Figure 1 , Figure 10 and Figure 11 and refer to Figure 3 , Figure 3 This is an exploded view of the structure of the box cover provided in some embodiments of this application. In some embodiments, the box cover 12 includes a box cover frame 123, and the battery transport protection 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 forms a first opening 133. The second connecting frame 71 is connected to the box cover frame 123. The outer peripheral surface of one of the first connecting frame 70 and the inner peripheral surface of the other are inclined, and the outer peripheral surface and the inner peripheral surface are connected in a mating manner.

[0155] In some embodiments, the outer peripheral surface of the first connecting frame 70 can be an inclined surface, and the inner peripheral surface of the second connecting frame 71 can be an inclined surface, with the outer peripheral surface and the inner peripheral surface cooperating to connect.

[0156] In some embodiments, the outer peripheral surface of the second connecting frame 71 can be an inclined surface, and the inner peripheral surface of the first connecting frame 70 can be an inclined surface, with the outer peripheral surface and the inner peripheral surface cooperating to connect.

[0157] In some embodiments, the first connecting frame 70 may be connected to the top of the box body frame 134 and enclose the first opening 133. The second connecting frame 71 may be connected to the bottom of the box cover frame 123 and is positioned corresponding to the first connecting frame 70.

[0158] The outer peripheral surface of the first connecting frame 70 can be an inclined plane along the direction of gravity Z, and the outer peripheral surface of the first connecting frame 70 can be an inclined plane that is inclined in a direction away from the center line of the box body 10. The inner peripheral surface of the second connecting frame 71 can be an inclined plane along the direction of gravity Z, and the inner peripheral surface of the second connecting frame 71 can be an inclined plane that is inclined in a direction away from the center line of the box body 10.

[0159] The technical solution of this application embodiment achieves the connection between the box cover 12 and the box body 13 by the cooperation of the inclined surface of the first connecting frame 70 and the inclined surface of the second connecting frame 71. It can limit the box cover 12 and the box body 13 in the horizontal direction, which helps to improve the reliability of the connection between the box cover 12 and the box body 13. At the same time, the connection by the cooperation of the two inclined surfaces facilitates the positioning and installation when the box cover 12 and the box body 13 are connected.

[0160] Please refer to Figure 1 In some embodiments, the battery transport protection device 1 further includes a seal 80 for sealing the gap between the first connecting frame 70 and the second connecting frame 71.

[0161] When the battery catches fire, the generated gases may escape from the first receiving cavity 11. In some embodiments, a seal 80 may be provided to seal the gap between the first connecting frame 70 and the second connecting frame 71.

[0162] Because the generated gas temperature is high, the material of seal 80 can be a material with good high-temperature resistance.

[0163] In some embodiments, the seal 80 may be made of EPDM rubber.

[0164] The technical solution of this application embodiment reduces the risk of external impurities entering the first receiving cavity 11 and damaging the battery by setting a sealing member 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 sealing member 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 damage.

[0165] Please refer to Figure 1 and Figure 3 and refer to Figure 2 , Figure 2 This is a schematic diagram of a case cover provided in some embodiments of this application. In some embodiments, the battery transport protection device 1 further includes a detection element 20 and a fire-fighting mechanism 30. The case 10 has a first receiving cavity 11 for receiving batteries. The detection element 20 is disposed in the case 10 and is used to detect environmental parameters within the first receiving cavity 11. The fire-fighting mechanism 30 is disposed in the case 10 and is used to release a fire-fighting medium 50 into the first receiving cavity 11 when the environmental parameters exceed a threshold.

[0166] In some embodiments, the battery transport protection device 1 may include a detection element 20 and a fire-fighting mechanism 30. The detection element 20 is used to detect whether the battery in the housing 10 has experienced thermal runaway. When thermal runaway is detected, the fire-fighting mechanism 30 can be controlled to release fire-fighting medium 50 into the first receiving cavity 11, thereby extinguishing or suppressing the fire.

[0167] The detection device 20 may be equipped with a controller, which can directly control the fire-fighting mechanism 30 based on the detection data. Alternatively, the battery transport protection device 1 may include a controller, which receives the detection data from the detection device 20 and then controls the fire-fighting mechanism 30 based on the detection data.

[0168] In some embodiments, the detection element 20 can be a sensor capable of detecting the temperature, air pressure, or gas concentration inside the first accommodating cavity 11, and determining whether the battery has caught fire based on the detected data.

[0169] In some embodiments, the fire-fighting mechanism 30 may release the fire-fighting medium 50 into the first receiving cavity 11 by providing a power source (such as a motor, pump, etc.) to spray the fire-fighting medium 50 into the first receiving cavity 11 so that the fire-fighting medium 50 comes into contact with the battery.

[0170] Alternatively, the fire-fighting agency 30 can release the fire-fighting medium 50 it carries, allowing the fire-fighting medium 50 to enter the first receiving cavity 11 under the action of gravity, so that the fire-fighting medium 50 comes into contact with the battery.

[0171] In some embodiments, the fire-fighting medium 50 can be a liquid, such as water; the fire-fighting medium 50 can also be a solid, such as sand; or the fire-fighting medium 50 can also be a gas, such as carbon dioxide.

[0172] In the technical solution of this application embodiment, when transporting the battery, the battery is housed in the first receiving cavity 11 of the housing 10. When the battery experiences thermal runaway or catches fire, it may be accompanied by an increase in temperature, the generation of flammable gas, and an increase in gas pressure within the first receiving cavity 11. By setting a detection element 20 to detect environmental parameters (temperature, concentration of flammable gas, gas pressure, etc.) within the first receiving cavity 11, when the environmental parameters detected by the detection element 20 exceed a threshold, a fire-fighting mechanism 30 releases a fire-fighting medium 50 into the first receiving cavity 11. The fire-fighting medium 50 has good heat insulation and fire suppression properties. The fire-fighting medium 50 comes into contact with the battery to extinguish the fire (fire suppression, cooling, etc.), reducing the risk of losses (personal injury, property damage) caused by battery fire, and improving the reliability of the battery transport protection device 1 in transporting the battery.

[0173] Please refer to Figure 1 and Figure 3 In some embodiments, the fire-fighting mechanism 30 is located above the first receiving cavity 11, and the fire-fighting mechanism 30 is configured to switch 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.

[0174] In some embodiments, the fire-fighting mechanism 30 may be located above the first receiving cavity 11, so that when the fire-fighting mechanism 30 releases the fire-fighting medium 50, the fire-fighting medium 50 can make better contact with the battery under the action of gravity.

[0175] In addition, when a battery catches fire, the fire usually spreads upwards. The fire-fighting mechanism 30 is located above the first receiving cavity 11. That is, when the fire-fighting mechanism 30 releases the fire-fighting medium 50, the fire-fighting medium 50 comes into contact with the top of the battery, which can better extinguish or suppress the fire.

[0176] The technical solution of this application embodiment is to place the fire-fighting mechanism 30 above the first receiving cavity 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 battery fire and loss, and improving the reliability of battery transport protection device 1 in transporting batteries.

[0177] Please refer to Figure 1 , Figure 3 and Figure 11 In some embodiments, the fire-fighting mechanism 30 is connected to the cover 12.

[0178] In some embodiments, the fire-fighting mechanism 30 is connected to the cover 12 such that the fire-fighting mechanism 30 is located above the first receiving cavity 11, thereby enabling the fire-fighting mechanism 30 to release fire-fighting medium 50 above the battery when the battery is placed in the first receiving cavity 11.

[0179] In the technical solution of this application embodiment, during transportation, the box cover 12 is located above the box body 13, that is, the box cover 12 is located above the first receiving cavity 11. By connecting the fire-fighting mechanism 30 to the box cover 12, when the battery is contained in the first receiving 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, reducing the risk of battery fire and loss, and improving the reliability of the battery transportation protection device 1 in transporting the battery.

[0180] Please refer to Figures 1 to 3 and refer to Figures 4 to 7 , Figure 4 A schematic diagram of a fire-fighting mechanism in a first state provided for some embodiments of this application. Figure 5 for Figure 4 Enlarged view of point A in the middle. Figure 6 A schematic diagram of a fire-fighting mechanism in a second state provided in some embodiments of this application. Figure 7 for Figure 6 Enlarged view at point B. In some embodiments, the fire-fighting mechanism 30 includes a first support plate 32, which is configured to rotate about a first axis O, the extension direction of which is perpendicular to the direction of gravity Z. In a first state, the first support plate 32 is in a horizontal position to carry the fire-fighting medium 50, and in a second state, the first support plate 32 is in a vertical or inclined position to release the fire-fighting medium 50.

[0181] In some embodiments, the fire-fighting mechanism 30 may include a fixed shaft, the first support plate 32 may rotate around the fixed shaft, and the first axis O is the central axis of the fixed shaft.

[0182] In some embodiments, the fire-fighting mechanism 30 may include a rotating shaft that can drive the first support plate 32 to rotate, and the first axis O is the central axis of the rotating shaft.

[0183] In some embodiments, the first axis can be represented by the letter O in the figure.

[0184] In some embodiments, when the data detected by the detection element 20 indicates that the battery has not caught fire, the first support plate 32 is in a 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.

[0185] When the data detected by the detection component 20 indicates that the battery is on fire, the first support plate 32 rotates around the first axis O, causing the first support plate 32 to tilt, or the first support plate 32 extends along the direction of gravity Z, and the fire-fighting medium 50 is released.

[0186] The technical solution of this application embodiment realizes the bearing and release of fire-fighting medium 50 by setting a rotating first support plate 32, reducing the risk of loss caused by battery fire, and improving the reliability of battery transport protection device 1 in transporting batteries.

[0187] Please refer to Figures 3 to 7 In some embodiments, the fire-fighting mechanism 30 further includes a first locking member 33 and a driving member 34. 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 so as to unlock the first support plate 32.

[0188] When the first support plate 32 is set in a horizontal position, it tends to tilt downwards due to gravity. In some embodiments, the fire-fighting mechanism 30 may include a first locking member 33. When the fire-fighting mechanism 30 is in a first state, the first locking member 33 limits the first support plate 32 so that the first support plate 32 is always in a horizontal position.

[0189] 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 in place, preventing it from tilting downwards. Alternatively, the first locking member 33 can pull the first support plate 32 in place, preventing it from tilting downwards.

[0190] When the fire-fighting mechanism 30 needs to switch from the first state to the second state, the driving component 34 can drive the first locking component 33 to move, so that the first locking component 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.

[0191] In some embodiments, the first support plate 32 may be made of metal.

[0192] In the technical solution of this application embodiment, the battery temperature is often high when it catches fire. By setting the driving component 34 and the first locking component 33 to control the first support plate 32 to carry and release the fire-fighting medium 50, the fire-fighting medium 50 can be released instead of manually, which improves the convenience and safety of fire-fighting the battery, reduces the risk of loss caused by battery fire, and helps to improve the reliability of battery transport protection device 1 in transporting batteries.

[0193] Please refer to Figures 1 to 7 In some embodiments, the fire-fighting mechanism 30 further includes a second support plate 35, which is fixedly disposed relative to the housing 10 and is in a horizontal position to support the fire-fighting medium 50. The first support plate 32 is rotatably connected to the second support plate 35. The detection element 20 is disposed on the second support plate 35.

[0194] In some embodiments, the fire-fighting mechanism 30 may include a second support plate 35, which may be fixedly installed with the housing 10. In the first state, both the first support plate 32 and the second support plate 35 may extend horizontally, and the upper surfaces of the first support plate 32 and the second support plate 35 may be located on the same horizontal plane to jointly support the fire-fighting medium 50.

[0195] In some embodiments, the second support plate 35 may be made of metal.

[0196] In some embodiments, the material of the second support plate 35 may be the same as that of the first support plate 32.

[0197] 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.

[0198] Since the first support plate 32 can rotate and is limited by the first locking member 33, and the mass of the fire-fighting medium 50 may be relatively heavy, in some embodiments, the second support plate 35 and the first support plate 32 jointly support the fire-fighting medium 50, so that in the first state, the first support plate 32 can better maintain a horizontal posture and reduce the load on the first locking member 33.

[0199] In some embodiments, the detection element 20 may be disposed on the lower surface of the second support plate 35, that is, the detection element 20 is located in the first receiving cavity 11.

[0200] In some embodiments, the second support plate 35 is fixedly disposed on the housing 10, so that the second support plate 35 can better bear the weight of the test piece 20.

[0201] In some embodiments, the second support plate 35 may be provided with mounting holes, and the detection element 20 is connected to the mounting holes by bolts.

[0202] The technical solution of this application embodiment improves the convenience of setting up the first support plate 32 by providing a second support plate 35 for fixing the first support plate 32. Simultaneously, the first support plate 32 and the second support plate 35 jointly support the fire-fighting medium 50, improving the reliability of supporting the fire-fighting medium 50. The detection element 20 is set up on the second support plate 35, and since the second support is fixedly set to the housing 10, the detection element 20 is fixedly set, improving the reliability of the installation of the detection element 20.

[0203] Please refer to Figures 3 to 7 In some embodiments, there are multiple first support plates 32 and second support plates 35. The first support plates 32 and second support plates 35 are arranged alternately along the second direction Y. The extension direction of the first axis O and the second direction Y are perpendicular to the gravity direction Z.

[0204] In some embodiments, there may be multiple first support plates 32 and multiple second support plates 35. The first support plates 32 and the second support plates 35 may 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.

[0205] Since 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 fire-fighting medium 50. Furthermore, when the fire-fighting medium 50 is released, the first support plate 32 tilts, allowing the fire-fighting medium 50 to be released relatively quickly and at multiple locations, thus better covering the fire area of ​​the battery.

[0206] In some embodiments, each of the second support plates 35 may be provided with a detection element 20, so that the multiple detection elements 20 can better detect the environmental parameters inside the first receiving cavity 11.

[0207] It should be noted that the driving component 34 can also be set on the second support plate 35. Since the driving component 34 is relatively heavy, in order to better support the driving component 34, it can be directly connected by two second support plates 35 to support the driving component 34. That is, there is no first support plate 32 between the two second support plates 35 supporting the driving component 34.

[0208] The technical solution of this application embodiment uses multiple first support plates 32 and multiple second support plates 35 arranged alternately to enable multiple fixed second support plates 35 to 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 loss caused by battery fire and improving the reliability of battery transport protection device 1 in transporting batteries.

[0209] Please refer to Figures 3 to 7 In some embodiments, a second opening 36 is formed between two adjacent second support plates 35. In a first state, the first support plate 32 closes the second opening 36; in a second state, the first support plate 32 opens the second opening 36.

[0210] In some embodiments, a second opening 36 may exist between two adjacent support plates, and the second opening 36 communicates with the first receiving cavity 11. When the fire-fighting mechanism 30 is in the first state, the first support plate 32 is in a horizontal position, and the first support plate 32 closes the second opening 36, thus separating the fire-fighting medium 50 from the first receiving cavity 11. When the fire-fighting mechanism 30 is in the second state, the first support plate 32 is tilted, and the first support plate 32 opens the second opening 36, allowing the fire-fighting medium 50 to enter the first receiving cavity 11 through the second opening 36.

[0211] The technical solution of this application embodiment closes the second opening 36 with the first support plate 32 to support the fire-fighting medium 50; and opens the second opening 36 with 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 battery transport protection device 1 in transporting batteries.

[0212] Please refer to Figures 3 to 7 In some embodiments, there are multiple first locking members 33, and each first support plate 32 corresponds to one of the first locking members 33. The fire-fighting mechanism 30 also includes a linkage shaft 37, which connects multiple first locking members 33 to enable the multiple first locking members 33 to be linked together. The drive member 34 is connected to the linkage shaft 37.

[0213] In some embodiments, there are multiple first locking members 33, and the number of first locking members 33 may be the same as the number of first support plates 32, with one first support plate 32 corresponding to one first locking member 33.

[0214] In some embodiments, the drive element 34 may be a cylinder or an electric motor.

[0215] In some embodiments, the fire-fighting mechanism 30 may include a linkage shaft 37 extending along a second direction Y, and a plurality of first locking members 33 connected to the linkage shaft 37. One end of the linkage shaft 37 is connected to the output end of the drive member 34.

[0216] When the driving component 34 drives the linkage shaft 37 to move, the linkage shaft 37 simultaneously drives multiple first locking components 33 to move, thereby enabling multiple first support plates 32 to release the fire-fighting medium 50 together.

[0217] The technical solution of this application embodiment 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. This helps to improve the consistency of the release of fire-fighting medium 50 by multiple first support plates 32, and reduces the number of driving members 34, thus saving costs.

[0218] Please refer to Figures 3 to 7 In some embodiments, multiple first locking members 33 are respectively disposed on multiple second support plates 35.

[0219] 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.

[0220] The technical solution of this application embodiment provides a plurality of first locking members 33 by means of a second support plate 35. Since the second support member is fixedly installed on the housing 10, the first locking members 33 are fixedly installed, which helps to improve the reliability of the installation of the first locking members 33.

[0221] Please refer to Figures 3 to 7 In some embodiments, the fire-fighting mechanism 30 further includes a mounting base 38 and a second locking member 39. The mounting base 38 is fixed to the second support plate 35, the first locking member 33 is movably disposed on the mounting base 38, and the second locking member 39 is fixed to the first support plate 32. The second locking member 39 has a locking hole 391 for the first locking member 33 to be inserted.

[0222] In some embodiments, the fire-fighting mechanism 30 may include a mounting base 38, a first locking member 33 being movably connected to the mounting base 38, and the first locking member 33 being movable relative to the mounting base 38 in a second direction Y.

[0223] In some embodiments, when the fire-fighting mechanism 30 is in the first state, the first locking member 33 extends into the locking hole 391 of the second locking member 39, thereby fixing 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 first support plate 32.

[0224] When the fire-fighting mechanism 30 switches from the first state to the second state, the driving component 34 drives the first locking component 33 to move away from the second locking component 39 along the second direction Y, so that the first locking component 33 extends out of the locking hole 391. At this time, the second locking component 39 loses its limit, and the first support plate 32 tilts under the action of gravity.

[0225] In some embodiments, the number of second locking members 39 may be the same as the number of first locking members 33, with one first locking member 33 corresponding to one second locking member 39.

[0226] In some embodiments, the first locking member 33 and the second locking member 39 may both be made of metal.

[0227] In some embodiments, the mounting base 38 and the second support plate 35 can be connected by bolts or by welding.

[0228] In some embodiments, the connection between the second locking member 39 and the first support plate 32 can be a bolt connection or welding.

[0229] The technical solution of this application embodiment achieves the first support plate 32 to carry or release 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 battery transport protection device 1 in transporting batteries.

[0230] Please refer to Figure 3 In some embodiments, the environmental parameters include at least one of temperature, combustible gas concentration, and gas pressure.

[0231] In some embodiments, environmental parameters 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 a pressure sensor.

[0232] In some embodiments, there may be multiple detection elements 20, which may be a temperature sensor, a combustible gas concentration sensor, or a gas pressure sensor, or the detection element 20 may be a sensor that integrates the detection of temperature, the detection of combustible gas concentration, and the detection of gas pressure.

[0233] In some embodiments, the detection element 20 can also be connected to an external monitoring system signal, and the connection method can be a circuit connection, a WiFi connection, a Bluetooth connection, etc. There can also be multiple detection elements 20, which can be a temperature sensor, a combustible gas concentration sensor, or a pressure sensor. The detection steps can be as follows: first, the temperature sensor detects the temperature inside the first receiving cavity 11. When the temperature sensor detects data exceeding a threshold, the temperature sensor transmits the detected data to the monitoring system, and the combustible gas concentration sensor and the pressure sensor start working. When the data detected by either the combustible gas concentration sensor or the pressure sensor exceeds the threshold, both will send an alarm signal to the monitoring system, and cause the fire-fighting mechanism 30 to switch from a first state to a second state to release the fire-fighting medium 50 to the battery.

[0234] It should be noted that the alarm signals received by the monitoring system can be a buzzer, a flashing red light on the display screen, etc.

[0235] In some embodiments, the fire control 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 cavity 11 and displays them on the display to ensure that the battery is in normal condition when it is packed.

[0236] The technical solution of this application embodiment is that when the battery thermal runaway occurs, it is accompanied by an increase in temperature and the release of combustible gases (H2, CO, etc.). At the same time, the released gas changes the gas pressure in the first accommodating cavity 11. The detection element 20 detects at least one of the temperature, combustible gas concentration and gas pressure, which helps to quickly detect whether the transported battery has thermal runaway, reduces the risk of battery fire and loss, and improves the reliability of the battery transport protection device 1 in transporting batteries.

[0237] Please refer to Figure 3 In some embodiments, the fire-fighting medium 50 includes flame-retardant microbeads.

[0238] In some embodiments, flame-retardant microbeads are functional particles with a diameter in the micrometer or millimeter range, which can be flame-retardant through physical or chemical action.

[0239] Flame-retardant microspheres can retard flames through physical means, similar to the principle of extinguishing fires with sand. When the microspheres come into contact with the fire, they reduce the oxygen content exposed to the flames. Alternatively, the microspheres can expand when heated to form a heat-insulating layer.

[0240] Flame-retardant microspheres can achieve flame retardancy through chemical action. When heated, they decompose, absorbing heat and releasing water vapor, such as with aluminum hydroxide or magnesium hydroxide. Alternatively, they can release inert gases, such as melamine.

[0241] In some embodiments, the flame-retardant microspheres may be hollow to reduce their weight, thereby making the battery transport protection device 1 lighter.

[0242] The timely solution of this application embodiment has flame-retardant microspheres with good heat absorption properties, and can expand to form a physical flame-retardant layer in a high-temperature environment. At the same time, the flame-retardant microspheres are highly lightweight. By using flame-retardant microspheres as the fire-fighting medium 50, the risk of loss caused by battery fire is reduced, which helps to improve the reliability of battery transport protection device 1 in transporting batteries, and at the same time helps to reduce the weight of battery transport protection device 1.

[0243] Please refer to Figure 3 In some embodiments, the flame-retardant microspheres include at least one of glass microspheres, ceramic microspheres, and mineral microspheres.

[0244] In some embodiments, the flame-retardant microspheres may be glass microspheres.

[0245] The technical solution of this application embodiment uses at least one of glass microspheres, ceramic microspheres, and mineral microspheres as the fire-fighting medium 50 to reduce the risk of loss caused by battery fire, which is beneficial to improving the reliability of battery transport protection device 1 in transporting batteries, and at the same time, it is beneficial to reduce the weight of battery transport protection device 1.

[0246] Please refer to Figure 3 and refer to Figure 8 and Figure 9 , Figure 8 This is a schematic diagram of a pressure relief module provided in some embodiments of this application. Figure 9 This is a schematic diagram of the structure of a pressure relief module provided in some embodiments of this application. In some embodiments, a pressure relief channel 121 is formed inside the cover 12, which is used to discharge gas from the first receiving cavity 11.

[0247] In some embodiments, the pressure relief channel 121 may connect the first receiving cavity 11 and the outside of the housing 10.

[0248] In some embodiments, the interior of the cover 12 may have a pressure relief channel 121 that connects the first receiving cavity 11 and the outside of the box body 10. The cover 12 may be integrally formed, or the cover 12 may be machined first, and then the pressure relief channel 121 may be machined by milling.

[0249] In some embodiments, the inside of the cover 12 may be provided with a receiving cavity, and a component for venting is provided in the receiving cavity. The venting component is provided with a pressure relief channel 121, which connects the first receiving cavity 11 and the outside of the box body 10.

[0250] In the technical solution of this application embodiment, battery thermal runaway is usually accompanied by gas generation. Gas accumulation in the first receiving cavity 11 can lead to increased pressure within the cavity, potentially causing an explosion or breaching the lid 12, resulting in damage. By providing a pressure relief channel 121 to expel the gas generated by the battery, the risk of excessive pressure within the first receiving cavity 11 is reduced, improving the reliability of the battery transport protection device 1 in transporting batteries. Simultaneously, by placing the pressure relief channel 121 inside the lid 12, i.e., above the first receiving cavity 11, the pressure relief channel 121 shares the same floor space as the main body 13, reducing the horizontal dimensions of the battery transport protection device 1 and facilitating its spatial arrangement during transport.

[0251] Please refer to Figure 3 , Figure 8 and Figure 9In some embodiments, the inside of the cover 12 forms a second receiving cavity 122. The battery transport protection device 1 also includes a plurality of pressure relief modules 40, which are disposed in the second receiving cavity 122. Each pressure relief module 40 has a smoke inlet 41 and a smoke outlet 42 at both ends. The inside of the pressure relief module 40 forms a pressure relief channel 121, which connects the smoke inlet 41 and the smoke outlet 42.

[0252] In some embodiments, the pressure relief module 40 may be made of metal.

[0253] In some embodiments, the pressure relief module 40 may have a smoke inlet 41 and a smoke outlet 42 at both ends. A pressure relief channel 121 is formed inside the pressure relief module 40. The smoke inlet 41 connects the first receiving cavity 11 and the pressure relief channel 121, and the smoke outlet 42 connects the pressure relief channel 121 and the outside of the housing 10. When the battery catches fire, the generated gas is discharged from the first receiving cavity 11 through the smoke inlet 41, the pressure relief channel 121, and the smoke outlet 42, and then discharged from the housing 10.

[0254] In some embodiments, the pressure relief module 40 may be enclosed by several plates to form a pressure relief channel 121, or the pressure relief module 40 may be a solid metal block with the pressure relief channel 121 machined inside.

[0255] The technical solution of this application embodiment, by setting a pressure relief module 40 inside the cover 12, thereby defining a pressure relief channel 121, reduces the risk of excessive air pressure in the first receiving cavity 11, and helps to improve the reliability of the battery transport protection device 1 in transporting batteries.

[0256] Please refer to Figure 3 , Figure 8 and Figure 9 In some embodiments, multiple pressure relief modules 40 are arranged in two columns, with the two columns spaced apart along a second direction Y. Multiple pressure relief modules 40 in each column are arranged along a first direction X. The first direction X and the second direction Y are perpendicular to the gravity direction Z. The smoke inlet 41 of each column of pressure relief modules 40 is located at one end closer to the other column, and the smoke outlet 42 of each column is located at one end farther from the other column.

[0257] In some embodiments, the first direction can be represented by the direction indicated by the letter X in the figure, the second direction can be represented by the direction indicated by the letter Y in the figure, and the direction of gravity can be represented by the direction indicated by the letter Z in the figure.

[0258] In some embodiments, the gravity direction Z can be parallel to the height direction of the box 10, the first direction X can be parallel to the length direction of the box 10, and the second direction Y can be parallel to the width direction of the box 10.

[0259] Alternatively, the direction of gravity Z can be parallel to the height direction of the box 10, the first direction X can be parallel to the width direction of the box 10, and the second direction Y can be parallel to the length direction of the box 10.

[0260] In some embodiments, the extension direction of the first axis O may be parallel to the first direction X.

[0261] 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.

[0262] In some embodiments, the number of pressure relief modules 40 in the two columns of pressure relief modules 40 is the same. The two columns of pressure relief modules 40 are projected onto a projection plane perpendicular to the second direction Y, and the orthographic projections of the two columns of pressure relief modules 40 overlap.

[0263] In the second direction Y, each pressure relief module 40 in one column of pressure relief modules 40 is set up in a one-to-one correspondence with each pressure relief module 40 in another column of pressure relief modules 40.

[0264] Taking two corresponding pressure relief modules 40 as an example, the smoke inlet 41 of one pressure relief module 40 is located at the end facing the other pressure relief module 40, and the smoke outlet 42 of one pressure relief module 40 is located at the end away from the other pressure relief module 40.

[0265] When the battery catches fire, the smoke and gas generated enter the second cavity 122 from the first cavity 11 and are discharged from the two pressure relief modules 40 respectively.

[0266] Similarly, when the battery catches fire, the smoke and gas produced enter the second cavity 122 from the first cavity 11 and are discharged from the two pressure relief modules 40 between the two rows of pressure relief modules 40.

[0267] The technical solution of this application embodiment, by arranging the smoke inlets 41 of the two rows of pressure relief modules 40 opposite to each other, allows the gas in the first receiving cavity 11 to be discharged from the middle simultaneously from the two rows of pressure relief modules 40, which helps to improve the efficiency of gas discharge, reduce the risk of excessive gas pressure in the first receiving cavity 11, and improve the reliability of the battery transport protection device 1 in transporting batteries.

[0268] Please refer to Figure 3 , Figure 4 , Figure 8 and Figure 9 In some embodiments, multiple pressure relief modules 40 are located above the fire-fighting mechanism 30, which is provided with a connecting hole 31 that connects the pressure relief channel 121 and the first receiving cavity 11.

[0269] In some embodiments, the lower part of the second receiving cavity 122 may have an opening communicating with the first receiving cavity 11. The pressure relief module 40 is disposed in the second receiving cavity 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 also above the fire-fighting medium 50.

[0270] To facilitate the entry of gas from the first receiving cavity 11 into the second receiving cavity 122, the first support plate 32 and the second support plate 35 may be provided with a connecting hole 31, which connects the first receiving cavity 11 and the second receiving cavity 122.

[0271] The number of first support plates 32 and second support plates 35 can be multiple, and each first support plate 32 and second support plate 35 can be provided with a connecting hole 31. That is, the number of connecting holes 31 can be multiple, and the multiple connecting holes 31 are arranged at intervals.

[0272] In some embodiments, the number of connecting holes 31 can be one. Both the first support plate 32 and the second support plate 35 can be provided with multiple through holes, which are interconnected and arranged along the second direction Y, forming a connecting hole 31 extending along the second direction Y. To reduce the risk of the fire-fighting medium 50 falling into the first receiving cavity 11 through the connecting hole 31, baffles protruding from the upper surfaces of the first support plate 32 and the second support plate 35 can be provided around the connecting hole 31 to limit the flow of the fire-fighting medium 50.

[0273] The fire-fighting medium 50 can be divided into two parts, with the two parts of the fire-fighting medium 50 located on both sides of the connecting hole 31 in the second direction Y.

[0274] In some embodiments, in the direction of gravity 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 receiving cavity 11 enters the gap between the two rows of pressure relief modules 40 through the connecting hole 31 and is discharged by the two rows of pressure relief modules 40 respectively.

[0275] The technical solution of this application embodiment connects the pressure relief channel 121 and the first receiving cavity 11 by setting a connecting hole 31 in the fire-fighting mechanism 30. This facilitates the discharge of gas in the first receiving cavity 11 through the pressure relief channel 121, reduces the risk of excessive gas pressure in the first receiving cavity 11, and helps improve the reliability of the battery transport protection device 1 in transporting batteries.

[0276] Please refer to Figure 3 and Figure 8In some embodiments, the battery transport protection device 1 further includes a gas collection hood 60, which is disposed between two rows of pressure relief modules 40 and connected to multiple pressure relief modules 40. The internal space of the gas collection hood 60 connects to the connecting hole 31 and multiple smoke inlets 41.

[0277] In some embodiments, the material of the gas collection hood 60 may be metal.

[0278] In some embodiments, the number of gas collection hoods 60 can be one. The gas collection hood 60 has a cavity with multiple openings. One opening is connected to the connecting hole 31, and the other openings are connected to the smoke inlets 41 of the two rows of pressure relief modules 40, respectively.

[0279] In some embodiments, there may be two gas collection hoods 60, each connected to one of two rows of pressure relief modules 40. Each gas collection 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.

[0280] The pressure relief modules 40 arranged along the second direction Y form a row of pressure relief modules 40. There may be gaps between adjacent pressure relief modules 40. After gas enters the second receiving cavity 122 through the connecting hole 31, it may disperse into the gaps between adjacent pressure relief modules 40, affecting gas discharge. Therefore, a gas collection hood 60 is provided. When the battery catches fire, the gas in the first receiving cavity 11 enters the gaps between the two rows of pressure relief modules 40 through the connecting hole 31 and collects in the cavity of the gas collection hood 60, or directly collects in the cavity of the gas collection hood 60 through the connecting hole 31, and is discharged through the pressure relief channel 121. This reduces the risk of gas dispersing into the gaps between adjacent pressure relief modules 40 and affecting gas discharge.

[0281] The technical solution of this application embodiment, by setting the gas collection hood 60 to connect the connecting hole 31 and the smoke inlet 41, allows the gas in the first receiving cavity 11 to be collected in the gas collection hood 60, which facilitates the pressure relief module 40 to discharge the gas in the first receiving cavity 11, reduces the risk of excessive gas pressure in the first receiving cavity 11, and helps to improve the reliability of the battery transport protection device 1 in transporting batteries.

[0282] Please refer to Figure 8 In some embodiments, there are two gas collection hoods 60, and the two gas collection hoods 60 are respectively connected to two rows of pressure relief modules 40.

[0283] In some embodiments, there may be two gas collection hoods 60, each connected to one of two rows of pressure relief modules 40. One gas collection hood 60 connects the gap between the two rows of pressure relief modules 40 and the smoke inlet 41 of that row of pressure relief modules 40.

[0284] During use, the detection element 20 requires a power source to provide driving power. When the battery catches fire, the temperature in the first receiving cavity 11 is high; therefore, the power source is located in the second receiving cavity 122. However, the gas entering the second receiving cavity 122 is also at a high temperature. To reduce the gas's impact on the power source, a gas collection hood 60, the inner wall of the second receiving cavity 122, and a pressure relief module 40 separate the second receiving cavity 122 into a receiving space. This receiving space is not connected to the gaps between the two rows of pressure relief modules 40, further minimizing the gas's influence on the power source.

[0285] The technical solution of this application embodiment sets two gas collection hoods 60 to connect 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 pressure relief modules 40.

[0286] Please refer to Figure 3 , Figure 8 and Figure 9 In some embodiments, the pressure relief module 40 includes a housing 43 and a filter element 44, the internal space of the housing 43 forming a pressure relief channel 121, and the filter element 44 disposed within the pressure relief channel 121.

[0287] In some embodiments, the pressure relief module 40 may include a housing 43, which may be made of metal.

[0288] In some embodiments, the housing 43 may be formed by welding multiple plates, or by stamping or milling a solid part.

[0289] 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 can be a filter screen, and a medium for settling and decomposing impurities can also be provided on the filter screen.

[0290] In the technical solution of this application embodiment, when the battery thermal runaway generates gas, the gas usually contains toxic gas and solid impurities in the battery. By setting a filter 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.

[0291] Please refer to Figure 3 , Figure 8 and Figure 9 and refer to Figure 10 , Figure 10This is a schematic diagram of a filter element provided in some embodiments of this application. 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, which are arranged sequentially along the gas flow direction in the pressure relief channel 121.

[0292] In some embodiments, along the gas flow direction in the pressure relief channel 121, that is, from the smoke inlet 41 to the smoke outlet 42, stainless steel fiber filter 441, glass fiber filter 442, and ceramic fiber filter 443 are arranged in sequence, so that when the battery catches fire, the gas passes through the stainless steel fiber filter 441, glass fiber filter 442, and ceramic fiber filter 443 in sequence.

[0293] In the technical solution of this application embodiment, the gas temperature generated during battery thermal runaway is high. The stainless steel limiting filter can withstand the high temperature. By sequentially arranging a stainless steel fiber filter 441, a glass fiber filter 442, and a ceramic fiber filter 443 along the gas flow direction in the pressure relief channel 121, toxic gases and solid impurities in the battery are filtered, which helps to improve the reliability of the filter element 44 and reduce the impact of the discharged gas on the outside world.

[0294] Please refer to Figure 3 , Figures 8 to 10 In some embodiments, the pressure relief module 40 further includes a flow guide plate 45 disposed within the housing 43.

[0295] In some embodiments, the baffle 45 is disposed within the housing 43 to reduce the cross-section of the pressure relief channel 121, thereby reducing the gas flow rate.

[0296] In some embodiments, the number of guide plates 45 can be multiple, and the multiple guide plates 45 are spaced apart along the direction from the smoke inlet 41 to the smoke outlet 42, and divide the pressure relief channel 121 into a cavity to accommodate the filter element 44, so as to facilitate the installation of the filter element 44.

[0297] The guide plate 45 is disposed inside the housing 43, and a gap can be formed between it and the inner wall of the housing 43, allowing gas to flow through the gap. The gaps formed between two adjacent guide plates 45 and the inner wall of the housing 43 can be staggered. For example, one end of one guide plate 45 in the first direction X forms a gap with the housing 43, and the other end of the other guide plate 45 in the first direction X forms a gap with the housing 43, thereby increasing the gas flow path and increasing the contact time between the gas and the filter element 44, which helps to reduce the risk of environmental pollution and losses caused by the discharged gas.

[0298] The technical solution of this application embodiment reduces the flow rate of gas in the pressure relief channel 121 by setting a guide plate 45 inside the housing 43, increases the contact time between the gas passing through the pressure relief channel 121 and the filter element 44, which helps to improve the filtration effect of the filter element 44 and reduce the impact of the discharged gas on the outside world.

[0299] Please refer to Figure 3 In some embodiments, the lid 12 includes a lid frame 123, a first heat-insulating liner 124 and a second heat-insulating liner 125. The lid frame 123 carries the pressure relief module 40. The first heat-insulating liner 124 and the second heat-insulating liner 125 are both connected to the lid frame 123. The first heat-insulating liner 124 is disposed around the pressure relief module 40, and the second heat-insulating liner 125 is disposed above the pressure relief module 40. The first heat-insulating liner 124 and the second heat-insulating liner 125 enclose and form a second receiving cavity 122.

[0300] In some embodiments, the box cover frame 123 can be a frame formed by welding metal tubes.

[0301] In some embodiments, the pressure relief module 40 may be disposed in the cover frame 123 to improve the strength of the cover 12, thereby improving the reliability of the pressure relief module 40.

[0302] When the battery catches fire, gas is released through the pressure relief channel 121 of the pressure relief module 40, which causes the surface temperature of the pressure relief module 40 to be high. Due to heat transfer, the outer surface temperature of the cover 12 will also be high. In some embodiments, by providing a first heat-insulating liner 124 and a second heat-insulating liner 125 around and above the pressure relief module 40, the risk of the outer surface temperature of the cover 12 being high due to the heat transfer from the pressure relief module 40 to the outer surface of the cover 12 is reduced.

[0303] In some embodiments, the first heat-insulating liner 124 may be disposed around the outer periphery of the second heat-insulating liner 125, and one upper end of the first heat-insulating liner 124 is connected to the second heat-insulating liner 125 to form a second receiving cavity 122 with an opening at the bottom, and the gas in the first receiving cavity 11 enters the second receiving cavity 122 through the opening of the second receiving cavity 122.

[0304] In some embodiments, the first heat-insulating liner 124 may be connected to the inner periphery of the box cover frame 123, and the second heat-insulating liner 125 may be connected to the top of the box cover frame 123. The first heat-insulating liner 124 and the second heat-insulating liner 125 are not directly connected.

[0305] The technical solution of this application embodiment improves the reliability of the pressure relief module 40 by setting the box cover frame 123 to support the pressure relief module 40. By setting the first heat insulation liner 124 and the second heat insulation liner 125 around and above the pressure relief module 40, the box cover 12 has better heat insulation properties, reducing the impact of temperature on the outer surface of the box cover 12 when discharging high-temperature gas.

[0306] Please refer to Figure 3 In some embodiments, the first thermal insulation liner 124 is made of aerogel; the second thermal insulation liner 125 is made of aerogel.

[0307] In some embodiments, the materials of the first heat insulation liner 124 and the second heat insulation liner 125 may be the same or different.

[0308] In some embodiments, the material of the first thermal insulation liner 124 may be silicate aerogel, alumina aerogel, titanium dioxide aerogel, etc.

[0309] In some embodiments, the material of the second thermal insulation liner 125 may be silicate aerogel, alumina aerogel, titanium dioxide aerogel, etc.

[0310] In some embodiments, both the first thermal insulation liner 124 and the second thermal insulation liner 125 can be silicate-based aerogel sheets.

[0311] In the technical solution of this application embodiment, aerogel has good heat insulation performance and low density. By setting aerogel as the material of the first heat insulation liner 124 and the second heat insulation liner 125, the cover 12 has good heat insulation performance, and at the same time, it helps to reduce the weight of the battery transport protection device 1.

[0312] Please refer to Figure 3 In some embodiments, the cover 12 further includes an outer cover plate 126, which is connected to the cover frame 123 and surrounds the pressure relief module 40. The outer cover of the cover 12 is located outside the first heat insulation liner 124.

[0313] In some embodiments, the outer panel 126 of the box cover may be made of metal.

[0314] In some embodiments, the outer cover panel 126 may be connected to the outer periphery of the cover frame 123 to be located outside the first thermal insulation liner 124.

[0315] The technical solution of this application embodiment reduces the risk of the first heat insulation lining 124 being damaged and thus affecting the heat insulation performance of the box cover 12 by providing a box cover outer plate 126 on the outside of the first heat insulation lining 124, thereby improving the reliability of the box cover 12.

[0316] Please refer to Figure 3 In some embodiments, the first heat insulation liner 124 is provided with a first pressure relief port 1241, and the outer cover plate 126 is provided with a second pressure relief port 1261 corresponding to the first pressure relief port 1241. The first pressure relief port 1241 connects the second pressure relief port 1261 and the pressure relief channel 121.

[0317] In some embodiments, the first heat insulation liner 124 may be provided with a first pressure relief port 1241, and the outer cover plate 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 connected to each other, and the first pressure relief port 1241 may be connected to the smoke outlet 42 of the pressure relief channel 121.

[0318] In some embodiments, when the battery catches fire, the gas in the first receiving cavity 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.

[0319] In some embodiments, the number of pressure relief modules 40 can be multiple, that is, the number of smoke outlets 42 can be multiple. The number of first pressure relief ports 1241 and second pressure relief ports 1261 can be the same as the number of smoke outlets 42. One first pressure relief port 1241 corresponds to one second pressure relief port 1261 and one smoke outlet 42.

[0320] The technical solution of this application embodiment, by setting the first pressure relief port 1241 and the second pressure relief port 1261 to communicate with the pressure relief channel 121, facilitates the discharge of gas from the first receiving cavity 11.

[0321] Please refer to Figure 3 In some embodiments, the cover 12 further includes a cover top plate 127, which is connected to the cover frame 123 and is located on the side of the second heat insulation liner 125 away from the pressure relief module 40.

[0322] In some embodiments, the top plate 127 of the box cover may be made of metal.

[0323] In some embodiments, the outer cover 126 may surround the outer periphery of the top cover 127, and one end of the outer cover 126 is connected to the top cover 127.

[0324] In some embodiments, the outer cover plate 126 can be connected to the outer periphery of the cover frame 123, and the top cover plate 127 can be connected to the top of the cover frame 123. The outer cover plate 126 and the top cover plate 127 are not directly connected.

[0325] In some embodiments, the material of the outer cover 126 can be the same as the material of the top cover 127.

[0326] In some embodiments, the material of the outer cover 126 may be different from the material of the top cover 127.

[0327] The technical solution of this application embodiment reduces the risk of the second heat insulation lining 125 being damaged and thus affecting the heat insulation performance of the box cover 12 by setting a box cover top plate 127 on the outside of the second heat insulation lining 125, thereby improving the reliability of the box cover 12.

[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 latch 90, and the other is provided with a bracket 91. The latch 90 is connected to the bracket 91 to lock the box cover 12 to the box body 13.

[0329] In some embodiments, the lid 12 may be provided with a latch 90, and the body 13 may be provided with a bracket 91. When the lid 12 and the body 13 are connected, the latch 90 and the bracket 91 cooperate to limit the lid 12 and the 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, thereby separating the lid 12 from the body 13.

[0330] In some embodiments, the case body 13 may be provided with a latch 90, and the case cover 12 may be provided with a bracket 91. When the case cover 12 and the case body 13 are connected, the bracket 91 may be provided with a locking hole. The latch 90 and the locking hole cooperate to limit the case cover 12 and the case 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, thereby separating the case cover 12 from the case body 13.

[0331] In some embodiments, the number of latches 90 and brackets 91 can be multiple, and the number of latches 90 and brackets 91 is the same, with each latch 90 and bracket 91 corresponding to the other. Multiple latches 90 and multiple brackets 91 can be evenly distributed around the housing 10.

[0332] The technical solution of this application embodiment connects the lid 12 and the body 13 of the box through the latch 90 and the bracket 91, which helps to improve the convenience of connecting and separating the lid 12 and the body 13 of the box.

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

[0334] In some embodiments, a pressure relief module 40 may be provided inside the cover 12, thereby making the cover 12 heavier. A first lifting part 128 is provided on the outer peripheral surface of the cover 12 to facilitate the lifting of the cover 12 by lifting tools.

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

[0336] In the technical solution of this application embodiment, the box cover 12 has a large mass. By providing a first lifting part 128 on the outer peripheral surface of the box cover 12, it is easy to cooperate with the lifting tool to realize the lifting of the box cover 12, which helps to improve 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 at point C. In some embodiments, the battery transport protection device 1 further includes a bracket 92, which is disposed at the bottom of the first receiving cavity 11 and is used to carry the battery. A strap ring 921 is provided on the outer periphery of the bracket 92.

[0338] In some embodiments, when transporting the battery, the battery is first placed on the bracket 92 and secured by straps connected to strap loops 921. Then the battery and the bracket 92 are 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 this application embodiment uses a bracket 92 to support the battery and a strap ring 921 to fix the battery, which facilitates the fixing of the battery and reduces the risk of interference caused by the battery shaking during transportation.

[0341] Please refer to Figure 1 and Figure 13 , Figure 13 for Figure 1 Enlarged view at point C. In some embodiments, the bracket 92 includes a bracket body 922 and a tray 923. The bracket body 922 has a multi-layer mesh structure, and the tray 923 is disposed 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 has a multi-layer mesh structure to provide better cushioning and reduce the risk of battery damage during transportation.

[0343] In some embodiments, the number of trays 923 can be multiple, and the multiple trays 923 can be spaced apart along the first direction X or the second direction Y.

[0344] The housing body 13 may include a frame, and therefore the bottom of the frame has multiple open areas. When accommodating batteries, there is a risk that the batteries may not be placed evenly and may wobble. In some embodiments, the batteries are placed using a bracket 92, which provides better support for the batteries.

[0345] In some embodiments, the bracket 92 can be used to hold a battery, which can be a battery pack, battery module, battery cell, etc.

[0346] The technical solution of this application embodiment, by setting a multi-layer mesh structure bracket body 922 to carry the battery, reduces the impact of vibration on the battery during transportation, which helps to improve 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 for limiting the bracket 92 in the opposite direction of gravity Z.

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

[0350] The technical solution of this application embodiment limits the bracket 92 by setting a locking mechanism 93, thereby limiting the battery and improving the reliability of the battery transport protection device 1 in transporting the battery.

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

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

[0353] In some embodiments, the number of first positioning parts 94 may be the same as the number of second positioning parts 941. The housing 10 may be a cuboid structure, the first positioning parts 94 may be disposed at the four corners of the top of the housing 10, and the second positioning parts 941 may be disposed at the four corners of the bottom of the housing 10.

[0354] In some embodiments, the first positioning part 94 can be a plate bent to form an angle. The first positioning part 94 is disposed on the top of the box body 10 and protrudes from the upper surface of the box cover 12. The second positioning part 941 also has an angle that cooperates with the first positioning part 94. The second positioning part 941 is disposed on 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 parts 94 are located outside the second positioning part 941, so that the second positioning part 941 is limited in the horizontal direction, reducing the risk of the upper battery transport protection device 1 falling.

[0355] The technical solution of this application embodiment, by setting the first positioning part 94 and the second positioning part 941 in cooperation, facilitates the stacking of two battery transport protection devices 1, thereby improving the convenience of battery transport.

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

[0357] In some embodiments, the bottom of the housing 10 may be provided with a forklift hole 95 so that a forklift can be inserted into the forklift hole 95 to move the battery transport protection device 1.

[0358] In some embodiments, the component providing the forklift hole 95 may be located at the bottom of the housing 10 and protrude from the lower surface of the housing body 13. The component providing the forklift hole 95 may share the space in the gravity direction Z with the second positioning part 941.

[0359] The technical solution of this application embodiment provides a forklift hole 95 at the bottom of the housing 10 to facilitate the movement of the battery transport protection device 1.

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

[0361] The battery transport protective device 1 is usually transported by other means of transportation, and the space to accommodate the battery transport protective device 1 is typically 2000mm-2700mm high. That is, during normal transportation, only two battery transport protective 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 protection device 1 is increased, while the pressure relief module 40 shares the floor space with the first receiving cavity 11 for transporting the battery, thus keeping the horizontal dimension of the battery transport protection device 1 unchanged. Compared to the side of the pressure relief channel 121, the battery transport protection device 1 of this embodiment is taller and has a smaller horizontal dimension.

[0363] During transportation, the increased height still allows for the vertical stacking of two battery transport protection devices 1 without affecting transportation efficiency. Furthermore, the horizontal dimensions of the battery transport protection device 1 in this design are smaller, enabling the transport of more of these devices, thus improving transportation efficiency.

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

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

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

[0367] The technical solution of this application embodiment has a battery transport protection device 1 whose height 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 vehicle for transportation.

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

[0369] The box body 13 includes a side wall 131 and a bottom wall 132. The bottom wall 132 is disposed opposite to the box cover 12. The side wall 131 surrounds the bottom wall 132. The lower end of the side wall 131 is connected to the bottom wall 132, and the upper end of the side wall 131 is connected to the box cover 12. The side wall 131 includes a side wall liner 1311, a side wall shell 1312, and a first flame-retardant and heat-insulating layer 1313. The first flame-retardant and heat-insulating layer 1313 is located between the side wall liner 1311 and the side wall shell 1312.

[0370] The cover 12 and the body 13 define a first receiving cavity 11 for accommodating the battery, reducing the risk of battery thermal runaway due to contact with the outside environment during battery transportation, and also reducing the risk of damage to the outside environment in the event of battery thermal runaway. By providing a first flame-retardant and heat-insulating layer 1313 between the inner lining 1311 and the outer shell 1312, the body 13 of the box has good heat insulation properties, reducing the impact of temperature on the outer surface of the body 13 of the box in the event of battery thermal runaway.

[0371] In some embodiments, the first flame-retardant heat insulation layer 1313 includes a first sub-flame-retardant heat insulation layer 1313a and a second sub-flame-retardant heat insulation layer 1313b, wherein the second sub-flame-retardant heat insulation layer 1313b is located between the sidewall liner 1311 and the first sub-flame-retardant heat insulation layer 1313a. The thermal conductivity of the second sub-flame-retardant heat insulation layer 1313b is less than that of the first sub-flame-retardant heat insulation layer 1313a.

[0372] In some embodiments, the first sub-flame-retardant heat insulation layer 1313a comprises aerogel, and the second sub-flame-retardant heat insulation layer 1313b comprises fiber refractory material.

[0373] Aerogel has a low density, and fiber refractory material has a low thermal conductivity. By setting aerogel as the first sub-flame-retardant insulation layer 1313a and fiber refractory material as the second sub-flame-retardant insulation layer 1313b, the insulation performance of the box body 13 gradually increases from the outside to the inside, making the arrangement of the first flame-retardant insulation layer 1313 more reasonable, and at the same time helping to reduce the weight of the battery transport protection device 1.

[0374] Although this application has been described with reference to preferred embodiments, various modifications can be made thereto and components can be replaced with equivalents without departing from the scope of this application. In particular, the technical features mentioned in the various embodiments can be combined in any manner, provided there is no structural conflict. This application is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A battery transport guard, comprising: The box comprises a box cover and a box body, the box body has a first opening, and the box cover covers the first opening to jointly define a first accommodating cavity for accommodating a battery with the box body. The box body comprises a side wall and a bottom wall, the bottom wall is arranged opposite to the box cover, the side wall surrounds 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 comprises a side wall lining, a side wall shell and a first fireproof and thermal insulation layer, and the first fireproof and thermal insulation layer is located between the side wall lining and the side wall shell. The first fireproof and thermal insulation layer comprises a first sub fireproof and thermal insulation layer and a second sub fireproof and thermal insulation layer, and the second sub fireproof and thermal insulation layer is located between the side wall lining and the first sub fireproof and thermal insulation layer.

2. The battery transport guard of claim 1, wherein, The thermal conductivity of the second sub fireproof and thermal insulation layer is less than that of the first sub fireproof and thermal insulation layer. The first sub fireproof and thermal insulation layer comprises aerogel, and the second sub fireproof and thermal insulation layer comprises fiber refractory material.

3. The battery transport guard of claim 2, wherein, The bottom wall comprises a bottom wall lining, a bottom wall shell and a second fireproof and thermal insulation layer, and the second fireproof and thermal insulation layer is located between the bottom wall lining and the bottom wall shell.

4. The battery transport guard of claim 1, wherein, The second fireproof and thermal insulation layer comprises a third sub fireproof and thermal insulation layer and a fourth sub fireproof and thermal insulation layer, and the third sub fireproof and thermal insulation layer is located between the bottom wall lining and the fourth sub fireproof and thermal insulation layer.

5. The battery transport guard of claim 4, wherein, The thermal conductivity of the third sub fireproof and thermal insulation layer is less than that of the fourth sub fireproof and thermal insulation layer. The third sub fireproof and thermal insulation layer comprises fiber refractory material, and the fourth sub fireproof and thermal insulation layer comprises aerogel.

6. The battery transport guard of claim 5, wherein, The first fireproof and thermal insulation layer comprises a first sub fireproof and thermal insulation layer and a second sub fireproof and thermal insulation layer, and the second sub fireproof and thermal insulation layer is located between the side wall lining and the first sub fireproof and thermal insulation layer.

7. The battery transport guard of claim 5, wherein, The material of the first sub fireproof and thermal insulation layer is the same as that of the fourth sub fireproof and thermal insulation layer, the thickness of the fourth sub fireproof and thermal insulation layer is greater than that of the first sub fireproof and thermal insulation layer, the material of the second sub fireproof and thermal insulation layer is the same as that of the third sub fireproof and thermal insulation layer, and the thickness of the third sub fireproof and thermal insulation layer is greater than that of the second sub fireproof and thermal insulation layer. The box body further comprises a box body framework, and the side wall and the bottom wall are connected to the box body framework.

8. The battery transport guard of claim 1, wherein, The box cover comprises a box cover framework, the battery transportation protection device comprises a first connecting frame and a second connecting frame, the first connecting frame is connected to the box body framework, the first connecting frame surrounds the first opening, and the second connecting frame is connected to the box cover framework.

9. The battery transport guard of claim 8, wherein, The outer periphery surface of one of the first connecting frame and the second connecting frame is a bevel surface, and the inner periphery surface of the other is a bevel surface, and the outer periphery surface and the inner periphery surface are connected in cooperation. The battery transportation protection device further comprises a sealing piece for sealing the gap between the first connecting frame and the second connecting frame.

10. The battery transport guard of claim 9, wherein, The battery transportation protection device further comprises:

11. The battery transport guard of claim 1, wherein, a detection piece arranged in the box, the detection piece being used for detecting an environmental parameter in the first accommodating cavity; and a fire-fighting mechanism connected to the box cover, the fire-fighting mechanism being used for releasing a fire-fighting medium to the first accommodating cavity when the environmental parameter exceeds a threshold value. ​ 12. The battery transport guard of claim 11, wherein, 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.

13. The battery transport guard of claim 12, wherein, The fire-fighting mechanism comprises a first support plate configured to be rotatable 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 posture to carry the fire-fighting medium, and in the second state, the first support plate is in a vertical posture or an inclined posture to release the fire-fighting medium.

14. The battery transport guard of claim 13, wherein, The fire-fighting mechanism further comprises a second support plate fixedly arranged relative to the box body and in a horizontal posture to carry the fire-fighting medium, and the first support plate is rotatably connected to the second support plate. The detection member is arranged on the second support plate.

15. The battery transport guard of claim 11, wherein, The environmental parameters include at least one of temperature, flammable gas concentration and air pressure.

16. The battery transport guard of claim 11, wherein, The fire-fighting medium comprises fire-retardant microbeads.

17. The battery transport guard of claim 16, wherein, The fire-retardant microbeads comprise at least one of glass microbeads, ceramic microbeads and mineral microbeads.

18. The battery transport guard of claim 1, wherein, The inside of the box cover is formed with a pressure relief channel for discharging gas in the first accommodating cavity.

19. The battery transport guard of claim 18, wherein, The inside of the box cover is formed with a second accommodating cavity, and the battery transportation protection device further comprises a plurality of pressure relief modules, the plurality of pressure relief modules are arranged in the second accommodating cavity, each of the pressure relief modules is provided with an inlet and an outlet at two ends thereof, the inside of the pressure relief module is formed with the pressure relief channel, and the pressure relief channel communicates the inlet and the outlet.

20. The battery transport guard of claim 19, wherein, The plurality of pressure relief modules are arranged in two rows, the two rows of pressure relief modules are arranged in a second direction, and the plurality of pressure relief modules in each row are arranged in a first direction, the first direction and the second direction are perpendicular to the direction of gravity. The inlet of each row of pressure relief modules is arranged at one end close to the other row of pressure relief modules, and the outlet of each row of pressure relief modules is arranged at one end away from the other row of pressure relief modules.

21. The battery transport guard of claim 20, wherein, The battery transportation protection device further comprises a gas collecting cover arranged between the two rows of pressure relief modules and connected to the plurality of pressure relief modules. The inside space of the gas collecting cover communicates the first accommodating cavity and the plurality of inlets.

22. The battery transport guard of claim 19, wherein, The pressure relief module comprises a shell and a filter, the inside space of the shell forms the pressure relief channel, and the filter is arranged in the pressure relief channel.

23. The battery transport guard of claim 22, wherein, The filter comprises a stainless steel fiber filter screen, a glass fiber filter screen and a ceramic fiber filter screen, and the stainless steel fiber filter screen, the glass fiber filter screen and the ceramic fiber filter screen are arranged in sequence along the flow direction of the gas in the pressure relief channel.

24. The battery transport guard of claim 22, wherein, The pressure relief module further comprises a flow guide plate arranged in the shell.

25. The battery transport guard of claim 19, wherein, The box cover comprises a box cover framework, a first heat insulation lining and a second heat insulation lining, the box cover framework carries the pressure relief module, the first heat insulation lining and the second heat insulation lining are connected to the box cover framework, the first heat insulation lining is arranged around the pressure relief module, the second heat insulation lining is arranged above the pressure relief module, and the first heat insulation lining and the second heat insulation lining enclose to form the second accommodating cavity.

26. The battery transport guard of claim 25, wherein, The material of the first heat insulation lining comprises aerogel; and the material of the second heat insulation lining comprises aerogel.

27. The battery transport guard of claim 25, wherein, The box cover further comprises a box cover outer plate connected to the box cover framework, the box cover outer plate is arranged around the pressure relief module, and the box cover outer plate is located outside the first heat insulation lining.

28. The battery transport guard of claim 25, wherein, The box cover further comprises a box cover top plate connected to the box cover framework, and the box cover top plate is located on the side of the second heat insulation lining away from the pressure relief module.

29. The battery transport guard of claim 1, wherein, The top of the box body is provided with a first positioning part, and the bottom of the box body is provided with a second positioning part matched with the first positioning part, so as to stack the two battery transportation protection devices along the direction of gravity.

30. The battery transport guard of claim 1, wherein, The height of the battery transportation protection device is h, and 700mm≤h≤1300mm is satisfied.

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