Battery transport guard

Abstract

This application provides a battery transport protection device, which includes a housing, a lid, and a body. The body has an opening, and the lid closes to the opening to define a first receiving cavity for accommodating a battery. The body includes a first sidewall, which comprises an inner panel and an outer panel. The inner and outer panels are spaced apart along a first direction. The inner panel has a first vent, and the outer panel has a second vent. The first and second vents communicate with each other. Along the direction of gravity, the second vent is located below the first vent. The first direction is parallel to the thickness direction of the first sidewall and perpendicular to the direction of gravity. This solution improves the reliability of the battery transport protection device.

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. Summary of the Invention

[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] This application provides a battery transport protection device, which includes a housing, a lid, and a body. The body has an opening, and the lid closes to the opening to define a first receiving cavity for accommodating a battery. The body includes a first sidewall, which comprises an inner panel and an outer panel. The inner and outer panels are spaced apart along a first direction. The inner panel has a first vent, and the outer panel has a second vent. The first and second vents communicate with each other. Along the direction of gravity, the second vent is located below the first vent. The first direction is parallel to the thickness direction of the first sidewall and perpendicular to the direction of gravity.

[0007] 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 breaching the casing, resulting in damage. By providing a first vent on the inner plate of the first side wall and a second vent on the outer shell of the first side wall, the first and second vents are connected to expel the gas generated by the battery, reducing the risk of excessive pressure within the first containment cavity and improving the reliability of the battery transport protection device. Furthermore, since the gas in the first containment cavity is typically located in the upper part of the cavity, placing the first vent above the second vent allows for more timely gas discharge, improving its venting efficiency. Simultaneously, the second vent below the first vent reduces the risk of external impurities or liquids entering the first containment cavity through the second vent.

[0008] In some embodiments, the first sidewall further includes a pressure relief module located between the inner plate of the first sidewall and the outer shell of the first sidewall. The pressure relief module is provided with a smoke inlet and a smoke outlet. The smoke inlet is connected to a first exhaust port, and the smoke outlet is connected to a second exhaust port. A pressure relief channel is formed inside the pressure relief module, and the pressure relief channel is connected to the smoke inlet and the smoke outlet.

[0009] The technical solution of this application embodiment defines a pressure relief channel by setting a pressure relief module between the inner plate of the first side wall and the outer shell of the first side wall, thereby reducing the risk of excessive air pressure in the first accommodating cavity and improving the reliability of the battery transport protection device in transporting batteries.

[0010] In some embodiments, the pressure relief channel includes a plurality of first channels and at least one second channel. The plurality of first channels are arranged at intervals along the direction of gravity, and the ends of two adjacent first channels on the same side in the second direction are connected through a second channel. The first direction, the second direction, and the direction of gravity are perpendicular to each other. The smoke inlet is connected to the uppermost first channel, and the smoke outlet is connected to the lowermost first channel.

[0011] The technical solution of this application embodiment sets up multiple first channels arranged at intervals along the direction of gravity, and sets up a second channel to connect two adjacent first channels. The smoke inlet is connected to the uppermost first channel, and the smoke outlet is connected to the lowermost first channel. This makes the gas flow path in the pressure relief channel longer, so that the pressure relief channel can hold more gas and provide more preparation time to deal with the gas discharged from the second exhaust port.

[0012] In some embodiments, the pressure relief module includes a housing and a first filter element, the internal space of the housing forming a pressure relief channel, and the first filter element being disposed within the pressure relief channel.

[0013] In the technical solution of this application embodiment, when a battery experiences thermal runaway and generates gas, the gas typically contains toxic gases and solid impurities from within the battery. By installing a first filter element in the pressure relief channel to filter the gas within the channel, the risk of environmental pollution and damage caused by the emitted gas is reduced. Simultaneously, the gas flow path within the pressure relief channel is relatively long, meaning the gas flow time is extended, allowing the first filter element to better filter the gas.

[0014] In some embodiments, the first filter element includes a stainless steel fiber filter, a glass fiber filter, and a ceramic fiber filter, which are arranged sequentially along the gas flow direction in the pressure relief channel.

[0015] In the technical solution of this application embodiment, the gas temperature generated during battery thermal runaway is high. The stainless steel fiber filter can withstand the high temperature. By sequentially setting the stainless steel fiber filter, glass fiber filter, and 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.

[0016] In some embodiments, the battery transport protection device further includes a second filter element disposed at the first vent and / or the second vent.

[0017] The technical solution of this application embodiment reduces the risk of external impurities entering the first receiving cavity through the first exhaust port and / or the second exhaust port by providing a second filter at the first exhaust port and / or the second exhaust port.

[0018] In some embodiments, the first sidewall further includes a first flame-retardant and heat-insulating layer, which is located between the inner panel of the first sidewall and the outer shell of the first sidewall, and a pressure relief module is located between the first flame-retardant and heat-insulating layer and the inner panel of the first sidewall. The first flame-retardant and heat-insulating layer is provided with a first connecting port that connects the smoke outlet and the second exhaust outlet.

[0019] The technical solution of this application embodiment provides a first flame-retardant and heat-insulating layer between the inner plate of the first sidewall and the outer shell of the first sidewall, thereby giving the first sidewall better heat insulation and reducing the impact of temperature on the outer surface of the first sidewall during battery thermal runaway.

[0020] 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 inner plate of the first sidewall 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.

[0021] The technical solution of this application embodiment is to set the second sub-flame-retardant heat insulation layer inside the first sub-flame-retardant heat insulation layer, and set the thermal conductivity of the second sub-flame-retardant heat insulation layer to be less than that of the first sub-flame-retardant heat insulation layer, so as to achieve gradient heat insulation of the box body with gradually increasing heat insulation performance from the outside to the inside, making the arrangement of the first flame-retardant heat insulation layer more reasonable.

[0022] In some embodiments, the first sub-flame-retardant insulation layer comprises aerogel, and the second sub-flame-retardant insulation layer comprises fiber refractory material.

[0023] 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.

[0024] In some embodiments, the first sidewall further includes a first sidewall liner, which is located between the first sidewall inner panel and the first flame-retardant heat insulation layer, and a pressure relief module is located between the first sidewall liner and the first sidewall inner panel. The first sidewall liner is provided with a second connecting port that connects the smoke outlet and the first connecting port.

[0025] The technical solution of this application embodiment provides a first sidewall liner between the first sidewall inner panel and the first flame-retardant heat insulation layer, so that the first sidewall liner and the first sidewall inner panel together fix the pressure relief module, which helps to improve the reliability of the pressure relief module installation.

[0026] In some embodiments, the enclosure body further includes a bottom wall, and one end of the first side wall is connected to the bottom wall in the direction of gravity. The bottom wall includes a bottom wall liner, a bottom wall shell, and a second flame-retardant and heat-insulating layer, the second flame-retardant and heat-insulating layer being located between the bottom wall liner and the bottom wall shell.

[0027] The technical solution of this application embodiment provides a second flame-retardant and heat-insulating layer between the bottom wall liner and the bottom wall shell, which makes the bottom wall have better heat insulation and reduces the impact of temperature on the outer surface of the bottom wall when the battery is thermally runaway.

[0028] 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.

[0029] 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.

[0030] 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.

[0031] The technical solution of this application embodiment, by setting aerogel as the fourth sub-flame-retardant and heat-insulating layer and setting fiber refractory material as the third sub-flame-retardant and heat-insulating layer, achieves gradient heat insulation with gradually increasing heat insulation performance from the outside to the inside of the box body, making the arrangement of the second flame-retardant and heat-insulating layer more reasonable, and at the same time helping to reduce the weight of the battery transportation protection device.

[0032] 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 inner panel of the first sidewall 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.

[0033] 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 first side wall, resulting in better thermal insulation of the bottom wall and reducing the impact of temperature on the outer surface of the bottom wall during battery thermal runaway.

[0034] In some embodiments, the enclosure body further includes a second sidewall adjacent to the first sidewall. The second sidewall includes a second sidewall liner, a second sidewall shell, and a third flame-retardant and heat-insulating layer, the third flame-retardant and heat-insulating layer being located between the second sidewall liner and the second sidewall shell.

[0035] The technical solution of this application embodiment provides a third flame-retardant and heat-insulating layer between the inner lining of the second sidewall and the outer shell of the second sidewall, thereby giving the second sidewall better heat insulation and reducing the impact of temperature on the outer surface of the second sidewall during battery thermal runaway.

[0036] In some embodiments, the box body further includes a box body frame, and the first side wall and the bottom wall are both connected to the box body frame.

[0037] The technical solution of this application embodiment improves the reliability of the box body by setting a box body frame to connect the first side wall and the bottom wall.

[0038] 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 disposed in the housing and is used to release a fire-fighting medium into the first receiving cavity when the environmental parameters exceed a threshold.

[0039] 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.

[0040] 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.

[0041] 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.

[0042] In some embodiments, the fire-fighting mechanism includes a first support plate, a second support plate, and a zipper connecting the first and second support plates. A detection element is disposed on the side of the first and / or second support plates opposite to the cover. In a first state, the zipper is closed, and the first and second support plates carry the fire-fighting medium; in a second state, the zipper is opened to release the fire-fighting medium.

[0043] The technical solution of this application embodiment realizes the bearing and release of fire-fighting medium by setting a first support plate, a second support plate and a zipper, reducing the risk of loss caused by battery fire and improving the reliability of battery transport protection device for transporting batteries.

[0044] In some embodiments, the fire-fighting mechanism further includes a first drive member for driving the zipper to open.

[0045] The technical solution of this application embodiment addresses the issue that batteries often reach high temperatures when they catch fire. By setting a first driving component to drive the zipper, the first and second support plates are controlled to carry and release the fire-fighting medium, replacing manual release of the fire-fighting medium. This improves the convenience and safety of fire-fighting the battery, reduces the risk of loss caused by battery fire, and enhances the reliability of battery transport protection devices.

[0046] In some embodiments, the fire-fighting mechanism includes a third support plate and a cutting element, with a detection element disposed on the side of the third support plate opposite to the cover. In a first state, the third support plate carries the fire-fighting medium; in a second state, the cutting element cuts the third support plate to release the fire-fighting medium.

[0047] The technical solution of this application embodiment realizes the bearing and release of fire-fighting medium by setting a third support plate and cutting parts, reducing the risk of loss caused by battery fire, and improving the reliability of battery transport protection device for transporting batteries.

[0048] In some embodiments, the third support plate has a cutting portion for cutting the workpiece. The cutting portion includes one of ceramic fiber board, mica board, and foam glass.

[0049] The technical solution of this application embodiment uses ceramic fiber board, mica board, and foam glass, which have a certain strength structure and good high-temperature resistance. By setting one of the ceramic fiber board, mica board, or foam glass as a cutting part, the reliability of the third support plate in bearing the fire-fighting medium is improved.

[0050] In some embodiments, the fire-fighting mechanism further includes a second drive member for driving the cutter to cut the third support plate.

[0051] The technical solution of this application embodiment controls the third support plate to carry and release the fire-fighting medium by setting a second driving member to drive the cutting member, thereby replacing the manual release of the fire-fighting medium, improving the convenience and safety of fire-fighting the battery, reducing the risk of loss caused by battery fire, and improving the reliability of battery transport protection device in transporting batteries.

[0052] In some embodiments, environmental parameters include at least one of temperature, combustible gas concentration, and gas pressure.

[0053] 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.

[0054] In some embodiments, the fire-fighting medium includes flame-retardant microbeads.

[0055] 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.

[0056] In some embodiments, flame-retardant microspheres include at least one of glass microspheres, ceramic microspheres, and mineral microspheres.

[0057] 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.

[0058] In some embodiments, the lid includes a lid body and a lid frame, with the lid frame disposed on the side of the lid body facing the lid body.

[0059] The technical solution of this application embodiment improves the reliability of the box cover by setting the box cover frame to connect with the box cover body.

[0060] In some embodiments, the battery transport protection device further includes a heat insulation element disposed on the side of the cover facing the body of the case. The heat insulation element includes a support plate and a ceramic fiber layer disposed on the surface of the support plate opposite to the cover.

[0061] The technical solution of this application embodiment provides a heat insulation component on the side of the cover facing the body of the box, so that the cover has good heat insulation properties and reduces the impact of temperature on the outer surface of the cover when the battery is in thermal runaway.

[0062] In some embodiments, the insulation element further includes an aerogel layer disposed on the surface of the support plate facing the lid.

[0063] The technical solution of this application embodiment achieves gradient insulation by setting an aerogel layer on the surface of the support plate facing the box cover, so that the insulation performance of the box cover gradually increases from the outside to the inside, making the arrangement of the insulation components more reasonable.

[0064] In some embodiments, the battery transport protection device further includes a seal for sealing the gap between the case body and the case lid.

[0065] 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 seal in the gap between the box body and the box cover. At the same time, when the battery thermally runs away, the seal can reduce the risk of high-temperature substances leaking from the gap between the box body and the box cover and causing damage.

[0066] In some embodiments, one of the box body and the box lid is provided with a latch, and the other is provided with a bracket. The latch is connected to the bracket to lock the box lid to the box body.

[0067] The technical solution of this application embodiment connects the lid and the body of the box through a latch and a bracket, which helps to improve the convenience of connecting and separating the lid and the body of the box.

[0068] In some embodiments, a lifting part is provided on the outer peripheral surface of the box cover.

[0069] The technical solution of this application embodiment provides a lifting part on the outer periphery of the box cover, which facilitates the lifting of the box cover in conjunction with lifting tools, thereby improving the convenience of connecting and separating the box cover and the box body.

[0070] In some embodiments, the battery transport protection device further includes a bracket disposed at the bottom of the first receiving cavity, the bracket being used to carry the battery, and the outer periphery of the bracket being provided with a strap ring.

[0071] The technical solution of this application embodiment uses a bracket to support the battery and a strap ring to fix the battery, which facilitates the fixation of the battery and reduces the risk of interference caused by the battery shaking during transportation.

[0072] In some embodiments, the bracket includes a bracket body and a tray. The bracket body has a multi-layered mesh structure, and the tray is disposed on the upper surface of the bracket body for contacting the battery.

[0073] The technical solution of this application embodiment, by setting a bracket body with a multi-layer mesh structure 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 in transporting the battery.

[0074] In some embodiments, the battery transport protection device further includes a locking mechanism for limiting the bracket in the opposite direction of gravity.

[0075] The technical solution of this application embodiment limits the bracket by setting a locking mechanism, thereby limiting the battery and improving the reliability of the battery transport protection device in transporting batteries.

[0076] 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.

[0077] The technical solution of this application embodiment, by setting a positioning part and a second positioning part in cooperation, facilitates the stacking of two battery transport protection devices, thereby improving the convenience of battery transport.

[0078] 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

[0079] 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.

[0080] Figure 1 Schematic diagram of a battery transport protection device provided in some embodiments of this application;

[0081] Figure 2 This is an exploded view of the structure of a battery transport protection device provided in some embodiments of this application;

[0082] Figure 3 This is an exploded view of the structure of the box body provided in some embodiments of this application;

[0083] Figure 4 A schematic diagram of a pressure relief module provided in some embodiments of this application;

[0084] Figure 5 This is a schematic diagram of the internal structure of a pressure relief module provided in some embodiments of this application;

[0085] Figure 6 This is an exploded view of the structure of the box lid provided in some embodiments of this application;

[0086] Figure 7 A schematic diagram of a fire-fighting organization provided for some embodiments of this application;

[0087] Figure 8 A schematic diagram of a fire-fighting organization provided for other embodiments of this application;

[0088] Figure 9 This is a schematic diagram of a heat insulation component provided in some embodiments of this application.

[0089] Icons: 1-Battery transport protective device; 10-Box body; 11-Box cover; 111-Box cover body; 112-Box cover frame; 113-Bracket; 114-Lifting part; 12-Box body; 121-Opening; 122-Box body frame; 123-Lock; 13-First side wall; 131-Inner panel of first side wall; 132-Outer shell of first side wall; 133-First exhaust port; 134-Second exhaust port; 135-Pressure relief module; 1351-Smoke inlet; 135 2-Smoke outlet; 1353-Pressure relief channel; 1354-First channel; 1355-Second channel; 1356-Shell; 1357-First filter element; 1357a-Stainless steel fiber filter; 1357b-Glass fiber filter; 1357c-Ceramic fiber filter; 136-First flame-retardant and heat-insulating layer; 1361-First connecting port; 1362-First sub-flame-retardant and heat-insulating layer; 1363-Second sub-flame-retardant and heat-insulating layer; 137-First sidewall lining; 1371- 14-Second connecting port; 15-First receiving cavity; 16-Bottom wall; 17-Second side wall; 18-Second positioning part; 19-Second positioning part; 20-Second filter element; 21-Detection element; 22-Fire-fighting machine Structure; 41-First support plate; 42-Second support plate; 43-Zipper; 44-First driving component; 45-Third support plate; 451-Cutting part; 46-Cutting component; 47-Second driving component; 50-Heat insulation component; 51-Bearing plate; 52-Ceramic fiber layer; 53-Aerogel layer; 60-Sealing component; 70-Bracket; 71-Binding ring; 72-Bracket body; 73-Bracket plate; 80-Locking mechanism; X-First direction; Y-Second direction; Z-Gravity direction. Detailed Implementation

[0090] 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.

[0091] 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.

[0092] 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.

[0093] 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.

[0094] 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.

[0095] In this application, "multiple" refers to two or more (including two), similarly, "multiple sets" refers to two or more (including two sets), and "multiple pieces" refers to two or more (including two pieces).

[0096] 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.

[0097] 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.

[0098] 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.

[0099] 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.

[0100] As an example, battery cell assemblies can also be housed in a battery housing by directly fixing multiple battery cells to the battery housing.

[0101] 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.

[0102] 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.

[0103] 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.

[0104] 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.

[0105] 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.

[0106] 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 battery fire produces gas, which can accumulate within the battery transport protection device, increasing the internal pressure. This could pose a risk of explosion or breaching the protection device, resulting in damage and compromising the reliability of the battery transport protection device.

[0107] 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. The battery transport protection device includes a housing, which includes a lid and a body. The body has an opening, and the lid closes to the opening to define a first receiving cavity for accommodating the battery. The body includes a first sidewall, which includes an inner panel and an outer shell. The inner panel and the outer shell are spaced apart along a first direction. The inner panel has a first vent, and the outer shell has a second vent. The first vent communicates with the second vent. Along the direction of gravity, the second vent is located below the first vent. The first direction is parallel to the thickness direction of the first sidewall and perpendicular to the direction of gravity.

[0108] By providing a first vent on the inner plate of the first side wall and a second vent on the outer shell of the first side wall, and connecting the first and second vents to discharge the gas generated by the battery, the risk of excessive gas pressure in the first containment cavity is reduced, which helps improve the reliability of the battery transport protection device. Simultaneously, since the gas in the first containment cavity is typically located in the upper part of the cavity, placing the first vent above the second vent allows for more timely gas discharge, improving the venting efficiency of the first vent. Furthermore, the second vent being located below the first vent reduces the risk of external impurities and liquids entering the first containment cavity through the second vent.

[0109] 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.

[0110] Please refer to Figures 1 to 3 , Figure 1 This is a schematic diagram of a battery transport protection device provided in some embodiments of this application. Figure 2 This is an exploded view of the structure of the battery transport protection device provided in some embodiments of this application. Figure 3This 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 11 and a box body 12. The box body 12 has an opening 121, and the lid 11 closes to the opening 121 to define a first receiving cavity 14 for accommodating a battery. The box body 12 includes a first sidewall 13, which includes an inner sidewall plate 131 and a outer sidewall shell 132. The inner sidewall plate 131 and the outer sidewall shell 132 are spaced apart along a first direction X. The inner sidewall plate 131 has a first vent 133, and the outer sidewall shell 132 has a second vent 134. The first vent 133 and the second vent 134 communicate with each other. Along the gravity direction Z, the second vent 134 is located below the first vent 133. The first direction X is parallel to the thickness direction of the first sidewall 13 and perpendicular to the gravity direction Z.

[0111] 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.

[0112] 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.

[0113] 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 14 of the housing 10 to protect it, reduce the risk of thermal runaway, and isolate it from external temperatures during transportation.

[0114] In some embodiments, when a battery experiences thermal runaway, the housing 10 contains the battery within the first receiving cavity 14. 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.

[0115] In some embodiments, an opening 121 may be formed on the top of the box body 12, through which the battery enters the box body 12, and the box cover 11 closes the opening 121 so that the battery is accommodated in the first receiving cavity 14.

[0116] In some embodiments, the first direction X can be represented by the direction indicated by the letter X in the figure. The first direction X can be parallel to the length direction of the housing 10, and the first direction X can be perpendicular to the gravity direction Z.

[0117] In some embodiments, the first sidewall 13 includes a first sidewall inner plate 131 and a first sidewall outer shell 132, the first sidewall inner plate 131 being a wall forming the first receiving cavity 14, and the first sidewall outer shell 132 being a wall forming the outer surface of the housing 10.

[0118] In some embodiments, the inner panel 131 of the first side wall is provided with a first exhaust port 133. The first exhaust port 133 can be formed integrally with the inner panel 131 of the first side wall, or the first exhaust port 133 can be formed by machining after the inner panel 131 of the first side wall is formed.

[0119] In some embodiments, the first sidewall housing 132 is provided with a second exhaust port 134. The second exhaust port 134 can be formed integrally with the first sidewall housing 132, or it can be formed by machining after the first sidewall housing 132 is formed.

[0120] In some embodiments, a first exhaust port 133 is disposed on one end of the inner plate 131 of the first side wall near the cover 11, and a second exhaust port 134 is disposed on one end of the outer shell 132 of the first side wall away from the cover 11.

[0121] When the battery experiences thermal runaway, the gas moves upwards towards the first containment cavity 14 and is discharged from the first containment cavity 14 through the first exhaust port 133 and the second exhaust port 134.

[0122] In the technical solution of this application embodiment, battery thermal runaway is usually accompanied by gas generation. Gas accumulation in the first receiving cavity 14 can lead to increased gas pressure within the cavity, potentially causing an explosion or breaching the lid 11, resulting in damage. By providing a first vent 133 on the inner plate 131 of the first side wall and a second vent 134 on the outer shell 132 of the first side wall, the first and second vents are connected to discharge the gas generated by the battery, reducing the risk of excessive gas pressure within the first receiving cavity 14 and improving the reliability of the battery transport protection device 1. Simultaneously, the gas in the first receiving cavity 14 is typically located in the upper part of the cavity. By placing the first vent 133 above the second vent 134, the first vent 133 can discharge the gas more promptly, improving its venting efficiency. Furthermore, the second vent 134 is located below the first vent 133, reducing the risk of external impurities and liquids entering the first receiving cavity 14 through the second vent 134.

[0123] Please refer to Figures 1 to 3 and refer to Figure 4 and Figure 5 , Figure 4 This is a schematic diagram of a pressure relief module provided in some embodiments of this application. Figure 5 This is a schematic diagram of the internal structure of a pressure relief module provided in some embodiments of this application. In some embodiments, the first sidewall 13 further includes a pressure relief module 135, which is located between the inner plate 131 and the outer shell 132 of the first sidewall. The pressure relief module 135 is provided with a smoke inlet 1351 and a smoke outlet 1352. The smoke inlet 1351 is connected to the first exhaust port 133, and the smoke outlet 1352 is connected to the second exhaust port 134. A pressure relief channel 1353 is formed inside the pressure relief module 135, which connects the smoke inlet 1351 and the smoke outlet 1352.

[0124] In some embodiments, the pressure relief module 135 may be made of metal.

[0125] In some embodiments, in the first direction X, the pressure relief module 135 may have a smoke inlet 1351 and a smoke outlet 1352 at both ends. A pressure relief channel 1353 is formed inside the pressure relief module 135. The smoke inlet 1351 connects to the first exhaust port 133 and the pressure relief channel 1353, and the smoke outlet 1352 connects to the pressure relief channel 1353 and the second exhaust port 134. When the battery catches fire, the generated gas is discharged from the housing 10 from the first receiving cavity 14 through the first exhaust port 133, the smoke inlet 1351, the pressure relief channel 1353, the smoke outlet 1352, and the second exhaust port 134.

[0126] In some embodiments, the pressure relief module 135 may be enclosed by several plates to form a pressure relief channel 1353, or the pressure relief module 135 may be a solid metal block with the pressure relief channel 1353 machined inside.

[0127] The technical solution of this application embodiment defines a pressure relief channel 1353 by setting a pressure relief module 135 between the inner plate 131 of the first side wall and the outer shell 132 of the first side wall, thereby reducing the risk of excessive air pressure in the first receiving cavity 14 and improving the reliability of the battery transport protection device 1 in transporting batteries.

[0128] Please refer to Figures 1 to 5 In some embodiments, the pressure relief channel 1353 includes a plurality of first channels 1354 and at least one second channel 1355. The plurality of first channels 1354 are arranged at intervals along the gravity direction Z. The ends of two adjacent first channels 1354 on the same side in the second direction Y are connected through a second channel 1355. The first direction X, the second direction Y, and the gravity direction Z are perpendicular to each other. The smoke inlet 1351 is connected to the uppermost first channel 1354, and the smoke outlet 1352 is connected to the lowermost first channel 1354.

[0129] In some embodiments, the plurality of first channels 1354 and second channels 1355 may be formed by enclosing a plurality of plates. Alternatively, a receiving cavity may be machined in the pressure relief module 135, and a partition plate may be provided to divide the receiving cavity into a plurality of first channels 1354 and second channels 1355.

[0130] In some embodiments, the first channel 1354 may extend along a second direction Y. The second direction Y can be represented by the direction indicated by the letter Y in the figure. The first direction X may be perpendicular to the second direction Y, and the second direction Y may be parallel to the width direction of the housing 10.

[0131] In some embodiments, the number of first channels 1354 can be two, three, four, five, etc.

[0132] In some embodiments, the number of first channels 1354 is three, and the number of second channels 1355 is two.

[0133] The first, second, and third first channels 1354 are arranged at intervals along the direction of gravity Z. The first channel 1354 is located at the top and is connected to the smoke inlet 1351. One end of the first channel 1354 in the second direction Y is connected to one end of the first second channel 1355 in the direction of gravity Z. The other end of the first second channel 1355 in the direction of gravity Z is connected to one end of the second first channel 1354 in the second direction Y. The other end of the second first channel 1354 in the second direction Y is connected to one end of the second second channel 1355 in the direction of gravity Z. The other end of the second second channel 1355 in the direction of gravity Z is connected to one end of the third first channel 1354 in the second direction Y. The third channel 1354 is connected to the smoke outlet 1352.

[0134] The technical solution of this application embodiment sets up multiple first channels 1354 arranged at Z intervals along the direction of gravity, and sets up a second channel 1355 to connect two adjacent first channels 1354. The smoke inlet 1351 is connected to the uppermost first channel 1354, and the smoke outlet 1352 is connected to the lowermost first channel 1354. This makes the gas flow path in the pressure relief channel 1353 longer, so that the pressure relief channel 1353 can hold more gas, thereby providing more preparation time to deal with the gas discharged from the second exhaust port 134.

[0135] Please refer to Figures 1 to 5 In some embodiments, the pressure relief module 135 includes a housing 1356 and a first filter element 1357. The internal space of the housing 1356 forms a pressure relief channel 1353, and the first filter element 1357 is disposed in the pressure relief channel 1353.

[0136] In some embodiments, the pressure relief module 135 includes a housing 1356, which may be made of metal.

[0137] In some embodiments, the housing 1356 may be formed by welding multiple plates, or by stamping or milling a solid part.

[0138] In some embodiments, a pressure relief channel 1353 is formed inside the housing 1356, and a first filter element 1357 is provided in the pressure relief channel 1353. The first filter element 1357 can be a filter screen, and a medium for settling and decomposing impurities can also be provided on the filter screen.

[0139] In the technical solution of this application embodiment, when a battery experiences thermal runaway and generates gas, the gas typically contains toxic gases and solid impurities from within the battery. By providing a first filter 1357 in the pressure relief channel 1353 to filter the gas within the channel, the risk of environmental pollution and damage caused by the emitted gas is reduced. Simultaneously, the gas flow path within the pressure relief channel 1353 is relatively long, meaning the gas flow time is extended, allowing the first filter 1357 to better filter the gas.

[0140] Please refer to Figures 1 to 5 In some embodiments, the first filter element 1357 includes a stainless steel fiber filter, a glass fiber filter 1357b, and a ceramic fiber filter 1357c, which are arranged sequentially along the gas flow direction in the pressure relief channel 1353.

[0141] In some embodiments, along the gas flow direction in the pressure relief channel 1353, that is, from the smoke inlet 1351 to the smoke outlet 1352, stainless steel fiber filter, glass fiber filter 1357b, and ceramic fiber filter 1357c are arranged in sequence, so that when the battery catches fire, the gas passes through the stainless steel fiber filter, glass fiber filter 1357b, and ceramic fiber filter 1357c in sequence.

[0142] In the technical solution of this application embodiment, the gas temperature generated during battery thermal runaway is high. The stainless steel fiber filter can withstand the high temperature. By sequentially arranging the stainless steel fiber filter, glass fiber filter 1357b, and ceramic fiber filter 1357c along the gas flow direction in the pressure relief channel 1353, 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.

[0143] Please refer to Figures 1 to 3In some embodiments, the battery transport protection device 1 further includes a second filter 20, which is disposed at the first vent 133 and / or the second vent 134.

[0144] In some embodiments, the second filter element 20 may be disposed at the first exhaust port 133.

[0145] In some embodiments, the second filter element 20 may be disposed at the second exhaust port 134.

[0146] In some embodiments, the first exhaust port 133 may be provided with a second filter element 20, and the second exhaust port 134 may also be provided with a second filter element 20.

[0147] In some embodiments, the second filter element 20 may be a filter screen or a waterproof and breathable membrane.

[0148] The technical solution of this application embodiment reduces the risk of external impurities entering the first receiving cavity 14 through the first exhaust port 133 and / or the second exhaust port 134 by providing a second filter element 20 at the first exhaust port 133 and / or the second exhaust port 134.

[0149] Please refer to Figures 1 to 3 In some embodiments, the first sidewall 13 further includes a first flame-retardant and heat-insulating layer 136, which is located between the inner panel 131 and the outer shell 132 of the first sidewall. The pressure relief module 135 is located between the first flame-retardant and heat-insulating layer 136 and the inner panel 131 of the first sidewall. The first flame-retardant and heat-insulating layer 136 is provided with a first connecting port 1361 that connects the smoke outlet 1352 and the second exhaust port 134.

[0150] When the battery catches fire, the temperature of the first receiving cavity 14 will rise. In order to reduce the risk of the heat energy in the first receiving cavity 14 being transferred to the outer surface of the box body 12 and causing the outer surface temperature of the box body 12 to be too high, in some embodiments, a first flame-retardant heat insulation layer 136 is provided between the inner plate 131 of the first side wall and the outer shell 132 of the first side wall.

[0151] In some embodiments, the material of the first flame-retardant and heat-insulating layer 136 may be aerogel, fiber refractory material, glass wool, etc.

[0152] In order to reduce the impact of the first flame-retardant heat insulation layer 136 on exhaust, in some embodiments, the first flame-retardant heat insulation layer 136 is provided with a first communication port 1361, which is connected to the smoke outlet 1352 and the second exhaust port 134.

[0153] In some embodiments, the first connection port 1361 may be integrally formed with the first flame-retardant heat insulation layer 136, or the first connection port 1361 may be formed by machining after the first flame-retardant heat insulation layer 136 has been processed.

[0154] The technical solution of this application embodiment provides a first flame-retardant and heat-insulating layer 136 between the first sidewall inner plate 131 and the first sidewall outer shell 132, so that the first sidewall 13 has good heat insulation properties, and reduces the impact of temperature on the outer surface of the first sidewall 13 when the battery is thermally runaway.

[0155] Please refer to Figures 1 to 3 In some embodiments, the first flame-retardant heat insulation layer 136 includes a first sub-flame-retardant heat insulation layer 1362 and a second sub-flame-retardant heat insulation layer 1363, wherein the second sub-flame-retardant heat insulation layer 1363 is located between the first sidewall inner plate 131 and the first sub-flame-retardant heat insulation layer 1362. The thermal conductivity of the second sub-flame-retardant heat insulation layer 1363 is less than that of the first sub-flame-retardant heat insulation layer 1362.

[0156] When the battery catches fire, heat is transferred outward from the first receiving cavity 14, causing the temperature of the box body 12 to gradually increase from the outside to the inside. In some embodiments, the first flame-retardant heat insulation layer 136 is divided into two layers, that is, the first flame-retardant heat insulation layer 136 includes a first sub-flame-retardant heat insulation layer 1362 and a second sub-flame-retardant heat insulation layer 1363, wherein the thermal conductivity of the second sub-flame-retardant heat insulation layer 1363 is less than that of the first sub-flame-retardant heat insulation layer 1362, that is, the heat insulation performance of the second sub-flame-retardant heat insulation layer 1363 is better, and the second sub-flame-retardant heat insulation layer 1363 is located between the inner plate 131 of the first side wall and the first sub-flame-retardant heat insulation layer 1362, that is, the second sub-flame-retardant heat insulation layer 1363 is located inside the first sub-flame-retardant heat insulation layer 1362, to form the first layer of heat insulation, after isolating most of the heat in the first receiving cavity 14, the remaining small portion of heat is then isolated by the first sub-flame-retardant heat insulation layer 1362.

[0157] In some embodiments, both the first sub-flame-retardant heat insulation layer 1362 and the second sub-flame-retardant heat insulation layer 1363 are provided with through holes. The through holes of the first sub-flame-retardant heat insulation layer 1362 and the through holes of the second sub-flame-retardant heat insulation layer 1363 correspond to each other in the first direction X. The through holes of the first sub-flame-retardant heat insulation layer 1362 and the through holes of the second sub-flame-retardant heat insulation layer 1363 together form the first communication port 1361.

[0158] The technical solution of this application embodiment is to set the second sub-flame-retardant heat insulation layer 1363 inside the first sub-flame-retardant heat insulation layer 1362, and set the thermal conductivity of the second sub-flame-retardant heat insulation layer 1363 to be less than that of the first sub-flame-retardant heat insulation layer 1362, so as to achieve gradient heat insulation of the box body 12 with gradually increasing heat insulation performance from the outside to the inside, and make the arrangement of the first flame-retardant heat insulation layer 136 more reasonable.

[0159] Please refer to Figures 1 to 3 In some embodiments, the first sub-flame-retardant heat insulation layer 1362 comprises aerogel, and the second sub-flame-retardant heat insulation layer 1363 comprises fiber refractory material.

[0160] In some embodiments, the material of the first sub-flame-retardant heat insulation layer 1362 can be aerogel, such as silicate aerogel, alumina aerogel, titanium dioxide aerogel, etc.

[0161] In some embodiments, the first sub-flame-retardant heat insulation layer 1362 may be a silicate-based aerogel board.

[0162] In some embodiments, the material of the second sub-flame-retardant heat insulation layer 1363 may be aluminosilicate refractory fiber, chromium-containing aluminosilicate refractory fiber, zirconium oxide refractory fiber, etc.

[0163] In some embodiments, the second sub-flame-retardant heat insulation layer 1363 may be a ceramic fiber board.

[0164] 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 1362 and the fiber refractory material as the second sub-flame-retardant heat insulation layer 1363, the heat insulation performance of the box body 12 gradually increases from the outside to the inside, making the arrangement of the first flame-retardant heat insulation layer 136 more reasonable, and at the same time helping to reduce the weight of the battery transport protection device 1.

[0165] Please refer to Figures 1 to 3 In some embodiments, the first sidewall 13 further includes a first sidewall liner 137, which is located between the first sidewall inner plate 131 and the first flame-retardant heat insulation layer 136. A pressure relief module 135 is located between the first sidewall liner 137 and the first sidewall inner plate 131. The first sidewall liner 137 is provided with a second connecting port 1371 that connects the smoke outlet 1352 and the first connecting port 1361.

[0166] In some embodiments, the material of the first sidewall outer shell 132 and the material of the first sidewall inner liner 137 can both be metal.

[0167] In some embodiments, the material of the first sidewall housing 132 and the material of the first sidewall liner 137 may be the same or different.

[0168] In some embodiments, the first sidewall liner 137 and the first sidewall inner plate 131 together define a receiving cavity, and the pressure relief module 135 is disposed in the receiving cavity.

[0169] In order to reduce the impact of the first sidewall liner 137 on exhaust, in some embodiments, the first sidewall liner 137 is provided with a second communication port 1371, which is connected to the smoke outlet 1352 and the first communication port 1361.

[0170] In some embodiments, the second connection port 1371 may be integrally formed with the first sidewall liner 137, or the second connection port 1371 may be formed by machining after the first sidewall liner 137 has been machined.

[0171] The technical solution of this application embodiment provides a first sidewall liner 137 between the first sidewall inner plate 131 and the first flame-retardant heat insulation layer 136, so that the first sidewall liner 137 and the first sidewall inner plate 131 jointly fix the pressure relief module 135, which helps to improve the reliability of the installation of the pressure relief module 135.

[0172] Please refer to Figures 1 to 3 In some embodiments, the box body 12 further includes a bottom wall 15, and one end of the first side wall 13 in the gravity direction Z is connected to the bottom wall 15. The bottom wall 15 includes a bottom wall liner 151, a bottom wall shell 152, and a second flame-retardant and heat-insulating layer 153, which is located between the bottom wall liner 151 and the bottom wall shell 152.

[0173] In some embodiments, the bottom wall 15 may be disposed opposite to the lid 11 in the gravity direction Z, and the thickness direction of the bottom wall 15 may be parallel to the thickness direction of the lid 11.

[0174] In some embodiments, the bottom wall liner 151, the second flame-retardant and heat-insulating layer 153, and the bottom wall shell 152 are arranged sequentially in the gravity direction Z.

[0175] In some embodiments, the bottom wall 15 may include a bottom wall liner 151 for forming a first receiving cavity 14. When the battery is located in the first receiving cavity 14, the bottom wall liner 151 is the portion of the bottom wall 15 facing the battery, and the bottom wall housing 152 is the portion of the bottom wall 15 facing away from the battery.

[0176] In some embodiments, the material of the bottom outer shell 152 and the material of the bottom inner liner 151 can both be metal.

[0177] In some embodiments, the material of the bottom wall outer shell 152 and the material of the bottom wall liner 151 may be the same or different.

[0178] When the battery catches fire, the temperature of the first receiving cavity 14 will rise. In order to reduce the risk of the heat energy in the first receiving cavity 14 being transferred to the outer surface of the box body 12 and causing the outer surface temperature of the box body 12 to be too high, in some embodiments, a second flame-retardant heat insulation layer 153 is provided between the bottom wall liner 151 and the bottom wall shell 152.

[0179] In some embodiments, the material of the second flame-retardant and heat-insulating layer 153 may be aerogel, fiber refractory material, glass wool, etc.

[0180] The technical solution of this application embodiment provides a second flame-retardant and heat-insulating layer 153 between the bottom wall liner 151 and the bottom wall shell 152, which makes the bottom wall 15 have better heat insulation and reduces the impact of temperature on the outer surface of the bottom wall 15 when the battery is thermally runaway.

[0181] Please refer to Figures 1 to 3 In some embodiments, the second flame-retardant heat insulation layer 153 includes a third sub-flame-retardant heat insulation layer 1531 and a fourth sub-flame-retardant heat insulation layer 1532, with the third sub-flame-retardant heat insulation layer 1531 located between the bottom wall lining 151 and the fourth sub-flame-retardant heat insulation layer 1532. The thermal conductivity of the third sub-flame-retardant heat insulation layer 1531 is less than that of the fourth sub-flame-retardant heat insulation layer 1532.

[0182] When the battery catches fire, heat is transferred outward from the first receiving cavity 14, causing the temperature of the box body 12 to gradually increase from the outside to the inside. In some embodiments, the second flame-retardant heat insulation layer 153 is divided into two layers, that is, the second flame-retardant heat insulation layer 153 includes a third sub-flame-retardant heat insulation layer 1531 and a fourth sub-flame-retardant heat insulation layer 1532, wherein the thermal conductivity of the third sub-flame-retardant heat insulation layer 1531 is less than that of the fourth sub-flame-retardant heat insulation layer 1532, that is, the heat insulation performance of the third sub-flame-retardant heat insulation layer 1531 is better, and the third sub-flame-retardant heat insulation layer 1531 is located between the bottom wall lining 151 and the fourth sub-flame-retardant heat insulation layer 1532, that is, the third sub-flame-retardant heat insulation layer 1531 is located inside the fourth sub-flame-retardant heat insulation layer 1532, which is used to form the first layer of heat insulation, after isolating most of the heat in the first receiving cavity 14, and then isolating the remaining small portion of heat through the fourth sub-flame-retardant heat insulation layer 1532.

[0183] The technical solution of this application embodiment achieves gradient heat insulation of the box body 12 with gradually increasing heat insulation performance from the outside to the inside by setting the third sub-flame-retardant heat insulation layer 1531 inside the fourth sub-flame-retardant heat insulation layer 1532, and the thermal conductivity of the third sub-flame-retardant heat insulation layer 1531 is less than that of the fourth sub-flame-retardant heat insulation layer 1532, so that the arrangement of the second flame-retardant heat insulation layer 153 is more reasonable.

[0184] Please refer to Figures 1 to 3 In some embodiments, the third sub-flame-retardant heat insulation layer 1531 comprises fiber refractory material, and the fourth sub-flame-retardant heat insulation layer 1532 comprises aerogel.

[0185] In some embodiments, the material of the fourth sub-flame-retardant heat insulation layer 1532 can be aerogel, such as silicate aerogel, alumina aerogel, titanium dioxide aerogel, etc.

[0186] In some embodiments, the fourth sub-flame-retardant and heat-insulating layer 1532 may be a silicate-based aerogel board.

[0187] In some embodiments, the material of the third sub-flame-retardant heat insulation layer 1531 may be aluminosilicate refractory fiber, chromium-containing aluminosilicate refractory fiber, zirconium oxide refractory fiber, etc.

[0188] In some embodiments, the third sub-flame-retardant heat insulation layer 1531 may be a ceramic fiber board.

[0189] The technical solution of this application embodiment, by setting aerogel as the fourth sub-flame-retardant heat insulation layer 1532 and setting fiber refractory material as the third sub-flame-retardant heat insulation layer 1531, achieves gradient heat insulation of the box body 12 with gradually increasing heat insulation performance from the outside to the inside, making the arrangement of the second flame-retardant heat insulation layer 153 more reasonable, and at the same time helping to reduce the weight of the battery transport protection device 1.

[0190] Please refer to Figures 1 to 3 In some embodiments, the first flame-retardant heat insulation layer 136 includes a first sub-flame-retardant heat insulation layer 1362 and a second sub-flame-retardant heat insulation layer 1363, the second sub-flame-retardant heat insulation layer 1363 being located between the first sidewall inner plate 131 and the first sub-flame-retardant heat insulation layer 1362. The material of the first sub-flame-retardant heat insulation layer 1362 is the same as that of the fourth sub-flame-retardant heat insulation layer 1532, and the thickness of the fourth sub-flame-retardant heat insulation layer 1532 is greater than the thickness of the first sub-flame-retardant heat insulation layer 1362; the material of the second sub-flame-retardant heat insulation layer 1363 is the same as that of the third sub-flame-retardant heat insulation layer 1531, and the thickness of the third sub-flame-retardant heat insulation layer 1531 is greater than the thickness of the second sub-flame-retardant heat insulation layer 1363.

[0191] In some embodiments, the material of the first sub-flame-retardant heat insulation layer 1362 is the same as that of the fourth sub-flame-retardant heat insulation layer 1532, and the thickness of the fourth sub-flame-retardant heat insulation layer 1532 is greater than that of the first sub-flame-retardant heat insulation layer 1362, thereby making the heat insulation effect of the fourth sub-flame-retardant heat insulation layer 1532 better than that of the first sub-flame-retardant heat insulation layer 1362.

[0192] The material of the second sub-flame-retardant heat insulation layer 1363 is the same as that of the third sub-flame-retardant heat insulation layer 1531. The thickness of the third sub-flame-retardant heat insulation layer 1531 is greater than that of the second sub-flame-retardant heat insulation layer 1363, thereby making the heat insulation effect of the third sub-flame-retardant heat insulation layer 1531 better than that of the second sub-flame-retardant heat insulation layer 1363.

[0193] That is, the heat insulation effect of the lower second flame-retardant heat insulation layer 153 is better than that of the surrounding first flame-retardant heat insulation layer 136. When the battery catches fire, the high-temperature substances generated (such as liquids or fluids generated by battery melting) accumulate on the bottom wall 15 under the action of gravity, which makes the flame-retardant heat insulation performance required for the bottom wall 15 higher. Therefore, the heat insulation effect of the lower second flame-retardant heat insulation layer 153 is set to be better than that of the surrounding first flame-retardant heat insulation layer 136.

[0194] 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 12 under the influence of gravity. By setting the material of the first sub-flame-retardant heat insulation layer 1362 to be the same as that of the fourth sub-flame-retardant heat insulation layer 1532, and setting the material of the second sub-flame-retardant heat insulation layer 1363 to be the same as that of the third sub-flame-retardant heat insulation layer 1531, and setting the thickness of the fourth sub-flame-retardant heat insulation layer 1532 to be greater than that of the first sub-flame-retardant heat insulation layer 1362, and setting the thickness of the third sub-flame-retardant heat insulation layer 1531 to be greater than that of the second sub-flame-retardant heat insulation layer 1363, the thermal conductivity of the bottom wall 15 is lower than that of the first side wall 13, resulting in better heat insulation of the bottom wall 15. This reduces the impact of temperature on the outer surface of the bottom wall 15 during battery thermal runaway.

[0195] Please refer to Figures 1 to 3 In some embodiments, the housing body 12 further includes a second sidewall 16 adjacent to the first sidewall 13. The second sidewall 16 includes a second sidewall liner 161, a second sidewall shell 162, and a third flame-retardant heat insulation layer 163, which is located between the second sidewall liner 161 and the second sidewall shell 162.

[0196] In some embodiments, there may be two first sidewalls 13 and two second sidewalls 16. In the direction of gravity Z, one end of the first sidewall 13 and one end of the second sidewall 16 surround the outer perimeter of the bottom wall 15, and the other end of the first sidewall 13 and the other end of the second sidewall 16 may be connected to the lid 11.

[0197] Two first sidewalls 13 are arranged opposite each other along a first direction X, and two second sidewalls 16 are arranged opposite each other along a second direction Y. The two ends of the first sidewalls 13 in the second direction Y are respectively connected to the two second sidewalls 16, and the two ends of the second sidewalls 16 in the first direction X are respectively connected to the two first sidewalls 13.

[0198] In some embodiments, along the second direction Y, a third flame-retardant heat-insulating layer 163 may be located between the second sidewall liner 161 and the second sidewall shell 162. The third flame-retardant heat-insulating layer 163 may be the same as the first flame-retardant heat-insulating layer 136. The second sidewall liner 161 may be the same as the first sidewall liner 137. The second sidewall shell 162 may be the same as the first sidewall shell 132.

[0199] The technical solution of this application embodiment provides a third flame-retardant and heat-insulating layer 163 between the second sidewall liner 161 and the second sidewall shell 162, which makes the second sidewall 16 have better heat insulation and reduces the impact of temperature on the outer surface of the second sidewall 16 when the battery is thermally runaway.

[0200] Please refer to Figures 1 to 3 In some embodiments, the box body 12 further includes a box body frame 122, and the first side wall 13 and the bottom wall 15 are both connected to the box body frame 122.

[0201] In some embodiments, the box body frame 122 can be a frame formed by welding metal pipes.

[0202] In some embodiments, the box body frame 122 can be divided into two frames. The bottom wall liner 151, the first side wall liner 137 and the second side wall liner 161 can be disposed in the inner frame, and the bottom wall shell 152, the first side wall shell 132 and the second side wall shell 162 can be disposed in the outer frame. The first flame-retardant heat insulation layer 136, the second flame-retardant heat insulation layer 153 and the third flame-retardant heat insulation layer 163 can be disposed in the space between the two frames.

[0203] In some embodiments, the bottom wall liner 151, the bottom wall shell 152, the first side wall liner 137, the first side wall shell 132, the second side wall liner 161, and the second side wall shell 162 can be plates, wherein the plates can be bent to form reinforcing ribs to improve the structural strength of the plates.

[0204] 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 122 to improve the support strength of the box body frame 122.

[0205] The technical solution of this application embodiment, by setting a box body frame 122 for connecting the first side wall 13 and the bottom wall 15, helps to improve the reliability of the box body 12.

[0206] Please refer to Figure 1 and Figure 2 and refer to Figure 6 , Figure 6This is an exploded view of the structure of the cover provided in some embodiments of this application. In some embodiments, the battery transport protection device 1 further includes a detection element 30 and a fire-fighting mechanism 40. The detection element 30 is disposed in the housing 10 and is used to detect environmental parameters within the first receiving cavity 14. The fire-fighting mechanism 40 is disposed in the housing 10 and is used to release a fire-fighting medium into the first receiving cavity 14 when the environmental parameters exceed a threshold.

[0207] In some embodiments, the battery transport protection device 1 may include a detection element 30 and a fire-fighting mechanism 40. The detection element 30 is used to detect whether the battery inside the housing 10 has experienced thermal runaway. When thermal runaway is detected, the fire-fighting mechanism 40 can be controlled to release fire-fighting medium into the first receiving cavity 14, thereby extinguishing or suppressing the fire.

[0208] The detection device 30 may be equipped with a controller, which can directly control the fire-fighting mechanism 40 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 30 and then controls the fire-fighting mechanism 40 based on the detection data.

[0209] In some embodiments, the detection element 30 can be a sensor capable of detecting the temperature, air pressure, or gas concentration inside the first accommodating cavity 14, and determining whether the battery has caught fire based on the detected data.

[0210] In some embodiments, the fire-fighting mechanism 40 may release the fire-fighting medium into the first receiving cavity 14 by providing a power source (such as a motor, pump, etc.) to spray the fire-fighting medium into the first receiving cavity 14 so that the fire-fighting medium comes into contact with the battery.

[0211] Alternatively, the fire-fighting agency 40 can release the fire-fighting medium it carries, allowing the fire-fighting medium to enter the first receiving cavity 14 under the action of gravity, so that the fire-fighting medium can come into contact with the battery.

[0212] In some embodiments, the fire-fighting medium can be a liquid, such as water; it can also be a solid, such as sand; or it can be a gas, such as carbon dioxide.

[0213] In some embodiments, the fire-fighting mechanism 40 is connected to the cover 11 such that the fire-fighting mechanism 40 is located above the first receiving cavity 14, thereby enabling the fire-fighting mechanism 40 to release fire-fighting medium above the battery when the battery is placed in the first receiving cavity 14.

[0214] In the technical solution of this application embodiment, when transporting the battery, the battery is housed in the first receiving cavity 14 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 14. By setting a detection element 30 to detect environmental parameters (temperature, concentration of flammable gas, gas pressure, etc.) within the first receiving cavity 14, when the environmental parameters detected by the detection element 30 exceed a threshold, a fire-fighting mechanism 40 releases a fire-fighting medium into the first receiving cavity 14. 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, cool down, 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.

[0215] Please refer to Figure 1 , Figure 2 and Figure 6 In some embodiments, the fire-fighting mechanism 40 is located above the first receiving cavity 14, and the fire-fighting mechanism 40 is configured to switch between a first state and a second state, in which the fire-fighting mechanism 40 carries the fire-fighting medium; and in the second state, the fire-fighting mechanism 40 releases the fire-fighting medium.

[0216] In some embodiments, the fire-fighting mechanism 40 may be located above the first receiving cavity 14, so that when the fire-fighting mechanism 40 releases the fire-fighting medium, the fire-fighting medium can make better contact with the battery under the action of gravity.

[0217] In addition, when a battery catches fire, the fire usually spreads upwards. The fire-fighting mechanism 40 is located above the first receiving cavity 14. That is, when the fire-fighting mechanism 40 releases the fire-fighting medium, the fire-fighting medium comes into contact with the top of the battery, which can better extinguish or suppress the fire.

[0218] The technical solution of this application embodiment, by setting the fire-fighting mechanism 40 above the first receiving cavity 14, in the first state, the fire-fighting mechanism 40 carries the fire-fighting medium, and in the second state, the fire-fighting mechanism 40 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 1 in transporting batteries.

[0219] Please refer to Figure 1 , Figure 2 and Figure 6 and refer to Figure 7 , Figure 7This is a schematic diagram of a fire-fighting mechanism provided in some embodiments of this application. In some embodiments, the fire-fighting mechanism 40 includes a first support plate 41, a second support plate 42, and a zipper 43, the zipper 43 connecting the first support plate 41 and the second support plate 42. A detection element 30 is disposed on the side of the first support plate 41 and / or the second support plate 42 opposite to the cover 11. In a first state, the zipper 43 is closed, and the first support plate 41 and the second support plate 42 carry the fire-fighting medium; in a second state, the zipper 43 is opened to release the fire-fighting medium.

[0220] In some embodiments, the two ends of the zipper 43 are respectively connected to the first support plate 41 and the second support plate 42 to form a complete support surface. In the first state, the support surface carries the fire-fighting medium. In the second state, the zipper 43 is opened, and the fire-fighting medium enters the first receiving cavity 14 through the gap formed by the opening of the zipper 43.

[0221] The technical solution of this application embodiment realizes the bearing and release of fire-fighting medium by setting a first support plate 41, a second support plate 42 and a zipper 43, reducing the risk of loss caused by battery fire and improving the reliability of battery transport protection device 1 in transporting batteries.

[0222] Please refer to Figure 1 , Figure 2 , Figure 6 and Figure 7 In some embodiments, the fire-fighting mechanism 40 further includes a first drive member 44 for driving the zipper 43 to open.

[0223] In some embodiments, the first driving element 44 may be a motor, cylinder, etc.

[0224] When the fire-fighting mechanism 40 needs to switch from the first state to the second state, the first driving component 44 can drive the pull tab of the zipper 43 to move, so that the zipper 43 is opened and the fire-fighting medium is released.

[0225] In the technical solution of this application embodiment, the battery temperature is often high when it catches fire. By setting the first driving member 44 to drive the zipper 43, the first support plate 41 and the second support plate 42 are controlled to carry and release the fire-fighting medium, which replaces the manual release of the fire-fighting medium, 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.

[0226] Please refer to Figure 1 , Figure 2 and Figure 6 and refer to Figure 8 , Figure 8This is a schematic diagram of a fire-fighting mechanism provided in some other embodiments of this application. In some embodiments, the fire-fighting mechanism 40 includes a third support plate 45 and a cutting element 46, with a detection element 30 disposed on the side of the third support plate 45 opposite to the cover 11. In a first state, the third support plate 45 carries the fire-fighting medium; in a second state, the cutting element 46 cuts the third support plate 45 to release the fire-fighting medium.

[0227] In some embodiments, in the first state, the third support plate 45 carries the fire-fighting medium. In the second state, the cutter 46 cuts the third support plate 45 to form a slit in the third support plate 45, through which the fire-fighting medium enters the first receiving cavity 14.

[0228] In some embodiments, the cutting component 46 can be scissors, a chainsaw, etc.

[0229] In some embodiments, the material hardness of the cutting element 46 is greater than that of the material hardness of the third support plate 45, so that the cutting element 46 can cut the third support plate 45.

[0230] The technical solution of this application embodiment realizes the bearing and release of fire-fighting medium by setting a third support plate 45 and a cutting piece 46, reducing the risk of loss caused by battery fire and improving the reliability of battery transport protection device 1 in transporting batteries.

[0231] Please refer to Figure 1 , Figure 2 , Figure 6 and Figure 8 In some embodiments, the third support plate 45 has a cutting portion 451 for being cut by the cutting element 46. The cutting portion 451 includes one of ceramic fiber board, mica board, and foam glass.

[0232] In some embodiments, the third support plate 45 may include a main body and a cutting portion 451. The material of the main body may be the same as that of the cutting portion 451, such as ceramic fiberboard, mica board, or foam glass. The material of the main body may be different from that of the cutting portion 451; the main body may be made of metal to improve the reliability of carrying fire-fighting media. The material of the cutting portion 451 may be ceramic fiberboard, mica board, or foam glass.

[0233] In the technical solution of this application embodiment, the ceramic fiber board, mica board, and foam glass have a certain strength structure and good high-temperature resistance. By setting one of the ceramic fiber board, mica board, and foam glass as the cutting part 451, the reliability of the third support plate 45 in bearing the fire-fighting medium is improved.

[0234] Please refer to Figure 1 , Figure 2 , Figure 6 and Figure 8In some embodiments, the fire-fighting mechanism 40 further includes a second drive member 47, which is used to drive the cutting member 46 to cut the third support plate 45.

[0235] In some embodiments, the second drive element 47 may be a cylinder, a motor, or the like.

[0236] When the fire-fighting mechanism 40 needs to switch from the first state to the second state, the second driving component 47 can drive the cutting component 46 to cut the third support plate 45, so that the fire-fighting medium is released.

[0237] The technical solution of this application embodiment controls the third support plate 45 to carry and release the fire-fighting medium by setting the second driving member 47 to drive the cutting member 46, thereby replacing the manual release of the fire-fighting medium, improving the convenience and safety of fire-fighting the battery, reducing the risk of loss caused by battery fire, and improving the reliability of battery transport protection device 1 in transporting batteries.

[0238] Please refer to Figure 2 and Figure 6 In some embodiments, the environmental parameters include at least one of temperature, combustible gas concentration, and gas pressure.

[0239] In some embodiments, environmental parameters may include one of temperature, combustible gas concentration, and gas, that is, the detection element 30 may be at least one of a temperature sensor, a combustible gas concentration sensor, or a pressure sensor.

[0240] In some embodiments, there may be multiple detection elements 30, which may be a temperature sensor, a combustible gas concentration sensor, or a gas pressure sensor, or the detection element 30 may be a sensor that integrates the detection of temperature, the detection of combustible gas concentration, and the detection of gas pressure.

[0241] In some embodiments, the detection element 30 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 30, 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 inside the first receiving cavity 14 is detected by the temperature sensor. 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 40 to switch from a first state to a second state to release the fire-fighting medium to the battery.

[0242] 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.

[0243] In some embodiments, the fire control mechanism 40 may further include a display, which is disposed outside the housing 10 and is signal-connected to the detection element 30. When the battery is placed in the housing 10, the detection element 30 detects the environmental parameters of the first receiving cavity 14 and displays them on the display to ensure that the battery is in normal condition when it is packed.

[0244] 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 14. The detection element 30 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.

[0245] In some embodiments, the fire-fighting medium includes flame-retardant microbeads.

[0246] 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.

[0247] 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.

[0248] 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.

[0249] In some embodiments, the flame-retardant microspheres may be hollow to reduce their weight, thereby making the battery transport protection device 1 lighter.

[0250] 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 high-temperature environments. At the same time, the flame-retardant microspheres are highly lightweight. By using flame-retardant microspheres as a fire-fighting medium, 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.

[0251] In some embodiments, flame-retardant microspheres include at least one of glass microspheres, ceramic microspheres, and mineral microspheres.

[0252] In some embodiments, the flame-retardant microspheres may be glass microspheres.

[0253] 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 1 in transporting batteries, and at the same time, it is beneficial to reduce the weight of battery transport protection device 1.

[0254] Please refer to Figure 1 , Figure 2 and Figure 6 In some embodiments, the lid 11 includes a lid body 111 and a lid frame 112, with the lid frame 112 disposed on the side of the lid body 111 facing the lid body 12.

[0255] In some embodiments, the lid body 111 can be a plate, and the lid body 111 can be welded to the lid frame 112.

[0256] In some embodiments, the number of box cover frames 112 can be two, and the two box cover frames 112 are arranged along the gravity direction Z.

[0257] The technical solution of this application embodiment improves the reliability of the box cover 11 by connecting the box cover frame 112 to the box cover body 111.

[0258] Please refer to Figure 1 , Figure 2 and Figure 6 and refer to Figure 9 , Figure 9 This is a schematic diagram of a heat insulation component provided in some embodiments of this application. In some embodiments, the battery transport protection device 1 further includes a heat insulation component 50, which is disposed on the side of the cover 11 facing the body 12. The heat insulation component 50 includes a support plate 51 and a ceramic fiber layer 52, which is disposed on the surface of the support plate 51 facing away from the cover 11.

[0259] In some embodiments, the material of the support plate 51 can be metal, and the support plate 51 can be a carrier of the ceramic fiber layer 52. The ceramic fiber layer 52 can be applied to the surface of the support plate 51 away from the box cover 11 by spraying.

[0260] The technical solution of this application embodiment provides a heat insulation component 50 on the side of the cover 11 facing the body 12, so that the cover 11 has good heat insulation properties and reduces the impact of temperature on the outer surface of the cover 11 when the battery is thermally runaway.

[0261] Please refer to Figure 2 , Figure 2 , Figure 6 and Figure 9 In some embodiments, the thermal insulation 50 further includes an aerogel layer 53 disposed on the surface of the support plate 51 facing the cover 11.

[0262] In some embodiments, the aerogel layer 53 can be applied to the support plate 51 by spraying.

[0263] The technical solution of this application embodiment provides an aerogel layer 53 on the surface of the support plate 51 facing the cover 11, thereby achieving gradient insulation of the cover 11 with gradually increasing insulation performance from the outside to the inside, making the arrangement of the insulation component 50 more reasonable.

[0264] Please refer to Figure 1 , Figure 2 and Figure 6 In some embodiments, the battery transport protection device 1 further includes a seal 60 for sealing the gap between the case body 12 and the case cover 11.

[0265] When the battery catches fire, the generated gases may escape from the first receiving cavity 14. In some embodiments, a seal 60 may be provided to seal the gap between the housing body 12 and the lid 11.

[0266] Because the generated gas temperature is high, the material of the seal 60 can be a material with good high-temperature resistance.

[0267] In some embodiments, the seal 60 may be made of EPDM rubber.

[0268] The technical solution of this application embodiment reduces the risk of external impurities entering the first receiving cavity 14 and damaging the battery by setting a sealing element 60 in the gap between the box body 12 and the box cover 11. At the same time, when the battery thermally runs away, the sealing element 60 can reduce the risk of high-temperature substances leaking from the gap between the box body 12 and the box cover 11 and causing damage.

[0269] Please refer to Figures 1 to 3 and refer to Figure 6 In some embodiments, one of the box body 12 and the box cover 11 is provided with a latch 123, and the other is provided with a bracket 113. The latch 123 is connected to the bracket 113 to lock the box cover 11 to the box body 12.

[0270] In some embodiments, the lid 11 may be provided with a latch 123, and the body 12 may be provided with a bracket 113. When the lid 11 and the body 12 are connected, the latch 123 and the bracket 113 cooperate to limit the lid 11 and the body 12 in the direction of gravity Z. At the same time, when it is necessary to remove the battery, the latch 123 and the bracket 113 are separated, thereby separating the lid 11 from the body 12.

[0271] In some embodiments, the case body 12 may be provided with a latch 123, and the case cover 11 may be provided with a bracket 113. When the case cover 11 and the case body 12 are connected, the bracket 113 may be provided with a locking hole. The latch 123 and the locking hole cooperate to limit the case cover 11 and the case body 12 in the direction of gravity Z. At the same time, when it is necessary to remove the battery, the latch 123 and the bracket 113 are separated, thereby separating the case cover 11 from the case body 12.

[0272] In some embodiments, the number of latches 123 and brackets 113 can both be multiple, and the number of latches 123 and brackets 113 is the same, with each latch 123 and bracket 113 corresponding to the other. Multiple latches 123 and multiple brackets 113 can be evenly distributed around the housing 10.

[0273] The technical solution of this application embodiment connects the lid 11 and the body 12 of the box through the latch 123 and the bracket 113, which helps to improve the convenience of connecting and separating the lid 11 and the body 12 of the box.

[0274] Please refer to Figures 1 to 3 In some embodiments, the outer peripheral surface of the box cover 11 is provided with a lifting part 114.

[0275] In some embodiments, a lifting part 114 is provided on the outer peripheral surface of the box cover 11 to facilitate the lifting of the box cover 11 by a lifting tool.

[0276] In some embodiments, the lifting part 114 may have a lifting hole so that a lifting tool can be inserted into the lifting hole to lift the cover 11.

[0277] The technical solution of this application embodiment provides a lifting part 114 on the outer peripheral surface of the box cover 11, which facilitates the lifting of the box cover 11 in conjunction with lifting tools, thereby improving the convenience of connecting and separating the box cover 11 and the box body 12.

[0278] Please refer to Figures 1 to 3 In some embodiments, the battery transport protection device 1 further includes a bracket 70, which is disposed at the bottom of the first receiving cavity 14 and is used to carry the battery. The bracket 70 is provided with a strap ring 71 on its outer periphery.

[0279] In some embodiments, when transporting the battery, the battery is first placed on the bracket 70 and secured by a strap ring 71, with the strap connected to the strap ring 71. Then the battery and the bracket 70 are moved together into the first receiving cavity 14.

[0280] In some embodiments, the bracket 70 may be made of metal.

[0281] The technical solution of this application embodiment uses a bracket 70 to carry the battery and a strap ring 71 to fix the battery, which facilitates the fixing of the battery and reduces the risk of interference caused by the battery shaking during transportation.

[0282] Please refer to Figures 1 to 3 In some embodiments, the bracket 70 includes a bracket body 72 and a tray 73. The bracket body 72 has a multi-layer mesh structure, and the tray 73 is disposed on the upper surface of the bracket body 72 for contacting the battery.

[0283] In some embodiments, the bracket 70 may include a bracket 70 body, which has a multi-layer mesh structure to provide better cushioning and reduce the risk of battery damage during transportation.

[0284] In some embodiments, the number of trays 73 can be multiple, and the multiple trays 73 can be spaced apart along the first direction X or the second direction Y.

[0285] The housing body 12 may include a frame with multiple open areas at the bottom. When accommodating batteries, uneven placement may cause the batteries to wobble. In some embodiments, the batteries are placed using a bracket 70, providing better support.

[0286] In some embodiments, the bracket 70 can be used to hold a battery, which can be a battery pack, battery module, battery cell, etc.

[0287] The technical solution of this application embodiment, by setting a multi-layer mesh structure bracket 70 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.

[0288] Please refer to Figures 1 to 3 In some embodiments, the battery transport protection device 1 further includes a locking mechanism 80, which is used to limit the bracket 70 in the opposite direction of gravity Z.

[0289] In some embodiments, the locking mechanism 80 can be a rotating shaft that extends along the gravity direction Z and is mounted on the first side wall 13 or the second side wall 16 of the housing body 12. 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 14, the bracket 70 is located at the bottom of the first receiving cavity 14, and the limiting block contacts the upper surface of the bracket 70, thereby limiting the bracket 70 in the gravity direction Z.

[0290] 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 70, so that the bracket 70 can be removed, thereby realizing the removal of the battery.

[0291] The technical solution of this application embodiment limits the bracket 70 by setting a locking mechanism 80, thereby limiting the battery and improving the reliability of the battery transport protection device 1 in transporting the battery.

[0292] Please refer to Figures 1 to 3 In some embodiments, a first positioning part 17 is provided on the top of the box 10, and a second positioning part 18 matching the first positioning part 17 is provided on the bottom of the box 10, for stacking two battery transport protection devices 1 along the gravity direction Z.

[0293] In some embodiments, a first positioning part 17 may be provided on the top of the box cover 11, and a second positioning part 18 may be provided on the bottom of the box body 12. When two battery transport protection devices 1 are stacked, the first positioning part 17 of the lower battery transport protection device 1 cooperates with the second positioning part 18 of the upper battery transport protection device 1.

[0294] In some embodiments, the number of first positioning parts 17 may be the same as the number of second positioning parts 18. The housing 10 may be a cuboid structure, the first positioning parts 17 may be disposed at the four corners of the top of the housing 10, and the second positioning parts 18 may be disposed at the four corners of the bottom of the housing 10.

[0295] In some embodiments, the first positioning part 17 can be a plate bent to form an angle. The first positioning part 17 is disposed on the top of the box body 10 and protrudes from the upper surface of the box cover 11. The second positioning part 18 also has an angle that cooperates with the first positioning part 17. The second positioning part 18 is disposed on the bottom of the box body 10 and protrudes from the lower surface of the box body 12. When two battery transport protection devices 1 are stacked, multiple first positioning parts 17 are located outside the second positioning part 18, so that the second positioning part 18 is limited in the horizontal direction, reducing the risk of the upper battery transport protection device 1 falling.

[0296] The technical solution of this application embodiment, by setting the first positioning part 17 and the second positioning part 18 in cooperation, facilitates the stacking of two battery transport protection devices 1, thereby improving the convenience of battery transport.

[0297] Please refer to Figures 1 to 3 In some embodiments, the battery transport protection device 1 includes a housing 10, which includes a lid 11 and a body 12. The body 12 has an opening 121, and the lid 11 closes to the opening 121 to define a first receiving cavity 14 for receiving the battery together with the body 12.

[0298] The box body 12 includes a first side wall 13, which includes a first side wall inner plate 131 and a first side wall outer shell 132. The first side wall inner plate 131 and the first side wall outer shell 132 are spaced apart along a first direction X. The first side wall inner plate 131 is provided with a first exhaust port 133, and the first side wall outer shell 132 is provided with a second exhaust port 134. The first exhaust port 133 and the second exhaust port 134 are connected. Along the gravity direction Z, the second exhaust port 134 is located below the first exhaust port 133. The first direction X is parallel to the thickness direction of the first side wall 13 and perpendicular to the gravity direction Z.

[0299] In the technical solution of this application embodiment, battery thermal runaway is usually accompanied by gas generation. Gas accumulation in the first receiving cavity 14 can lead to increased gas pressure within the cavity, potentially causing an explosion or breaching the lid 11, resulting in damage. By providing a first vent 133 on the inner plate 131 of the first side wall and a second vent 134 on the outer shell 132 of the first side wall, the first and second vents are connected to discharge the gas generated by the battery, reducing the risk of excessive gas pressure within the first receiving cavity 14 and improving the reliability of the battery transport protection device 1. Simultaneously, the gas in the first receiving cavity 14 is typically located in the upper part of the cavity. By placing the first vent 133 above the second vent 134, the first vent 133 can discharge the gas more promptly, improving its venting efficiency. Furthermore, the second vent 134 is located below the first vent 133, reducing the risk of external impurities and liquids entering the first receiving cavity 14 through the second vent 134.

[0300] 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 protective device, characterized in that, include: The enclosure includes a lid and a body, the body having an opening, and the lid closing onto the opening to define a first receiving cavity for receiving a battery together with the body. The box body includes a first sidewall, which includes an inner panel and an outer shell. The inner panel and the outer shell are spaced apart along a first direction. The inner panel has a first exhaust port, and the outer shell has a second exhaust port. The first exhaust port communicates with the second exhaust port. Along the direction of gravity, the second exhaust port is located below the first exhaust port. The first direction is parallel to the thickness direction of the first sidewall and perpendicular to the direction of gravity. The first sidewall also includes a pressure relief module, which is located between the inner plate of the first sidewall and the outer shell of the first sidewall. The pressure relief module is provided with a smoke inlet and a smoke outlet. The smoke inlet is connected to the first exhaust port, and the smoke outlet is connected to the second exhaust port. A pressure relief channel is formed inside the pressure relief module, which connects the smoke inlet and the smoke outlet. The pressure relief channel includes a plurality of first channels and at least one second channel. The plurality of first channels are arranged at intervals along the direction of gravity. The ends of two adjacent first channels on the same side in the second direction are connected through a second channel. The first direction, the second direction, and the direction of gravity are perpendicular to each other. The smoke inlet is connected to the uppermost first channel, and the smoke outlet is connected to the lowermost first channel.

2. The battery transport protection device according to claim 1, characterized in that, The pressure relief module includes a housing and a first filter element. The internal space of the housing forms the pressure relief channel, and the first filter element is disposed within the pressure relief channel.

3. The battery transport protection device according to claim 2, characterized in that, The first filter element includes a stainless steel fiber filter, a glass fiber filter, and a ceramic fiber filter, which are arranged sequentially along the gas flow direction in the pressure relief channel.

4. The battery transport protection device according to claim 1, characterized in that, The battery transport protection device further includes a second filter element, which is disposed at the first exhaust port and / or the second exhaust port.

5. The battery transport protection device according to claim 2, characterized in that, The first sidewall also includes a first flame-retardant and heat-insulating layer, which is located between the inner panel of the first sidewall and the outer shell of the first sidewall, and the pressure relief module is located between the first flame-retardant and heat-insulating layer and the inner panel of the first sidewall. The first flame-retardant and heat-insulating layer is provided with a first connecting port that connects the smoke outlet and the second exhaust port.

6. The battery transport protection device according to claim 5, characterized in that, The first flame-retardant heat insulation layer includes a first sub-flame-retardant heat insulation layer and a second sub-flame-retardant heat insulation layer, wherein the second sub-flame-retardant heat insulation layer is located between the first side wall inner plate and the first sub-flame-retardant heat 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.

7. The battery transport protection device according to claim 6, characterized in that, The first sub-flame-retardant and heat-insulating layer comprises aerogel, and the second sub-flame-retardant and heat-insulating layer comprises fiber refractory material.

8. The battery transport protection device according to claim 5, characterized in that, The first sidewall also includes a first sidewall liner, which is located between the first sidewall inner panel and the first flame-retardant heat insulation layer, and the pressure relief module is located between the first sidewall liner and the first sidewall inner panel. The inner lining of the first sidewall is provided with a second connecting port that connects the smoke outlet and the first connecting port.

9. The battery transport protection device according to claim 5, characterized in that, The box body also includes a bottom wall, and one end of the first side wall is connected to the bottom wall in the direction of gravity; The bottom wall includes a bottom wall liner, a bottom wall shell, and a second flame-retardant and heat-insulating layer, wherein the second flame-retardant and heat-insulating layer is located between the bottom wall liner and the bottom wall shell.

10. The battery transport protection device according to claim 9, characterized in that, The second flame-retardant heat insulation layer includes a third sub-flame-retardant heat insulation layer and a fourth sub-flame-retardant heat insulation layer, wherein the third sub-flame-retardant heat insulation layer is located between the bottom wall lining and the fourth sub-flame-retardant heat insulation layer; The thermal conductivity of the third sub-flame-retardant insulation layer is less than that of the fourth sub-flame-retardant insulation layer.

11. The battery transport protection device according to claim 10, characterized in that, The third sub-flame-retardant and heat-insulating layer includes fiber refractory material, and the fourth sub-flame-retardant and heat-insulating layer includes aerogel.

12. The battery transport protection device according to claim 10, characterized in that, The first flame-retardant heat insulation layer includes a first sub-flame-retardant heat insulation layer and a second sub-flame-retardant heat insulation layer, wherein the second sub-flame-retardant heat insulation layer is located between the first side wall inner plate 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.

13. The battery transport protection device according to claim 1, characterized in that, The box body also includes a second sidewall adjacent to the first sidewall; The second sidewall includes a second sidewall liner, a second sidewall shell, and a third flame-retardant and heat-insulating layer, wherein the third flame-retardant and heat-insulating layer is located between the second sidewall liner and the second sidewall shell.

14. The battery transport protection device according to claim 9, characterized in that, The box body also includes a box body frame, and the first side wall and the bottom wall are both connected to the box body frame.

15. The battery transport protection device according to claim 1, characterized in that, The battery transport protection device also includes detection components and a fire-fighting mechanism; The detection element is disposed in the housing and is used to detect environmental parameters within the first accommodating cavity; The fire-fighting mechanism is installed in the housing and is used to release fire-fighting medium into the first accommodating cavity when the environmental parameters exceed the threshold.

16. The battery transport protection device according to claim 15, characterized in that, The fire-fighting mechanism is located above the first receiving cavity, and the fire-fighting mechanism is configured to switch between a first state and a second state, in which the fire-fighting mechanism carries the fire-fighting medium. In the second state, the fire-fighting agency releases the fire-fighting medium.

17. The battery transport protection device according to claim 16, characterized in that, The fire-fighting mechanism includes a first support plate, a second support plate, and a zipper, wherein the zipper connects the first support plate and the second support plate; The detection element is disposed on the side of the first support plate and / or the second support plate opposite to the box cover; In the first state, the zipper is closed, and the first support plate and the second support plate carry the fire-fighting medium; in the second state, the zipper is opened to release the fire-fighting medium.

18. The battery transport protection device according to claim 17, characterized in that, The fire-fighting mechanism also includes a first driving component, which is used to drive the zipper to open.

19. The battery transport protection device according to claim 16, characterized in that, The fire-fighting mechanism includes a third support plate and a cutting component, and the detection component is disposed on the side of the third support plate opposite to the box cover; In the first state, the third support plate carries the fire-fighting medium; in the second state, the cutting element cuts the third support plate to release the fire-fighting medium.

20. The battery transport protection device according to claim 19, characterized in that, The third support plate has a cutting portion, which is used to be cut by the cutting element; The cutting section includes one of ceramic fiber board, mica board, and foam glass.

21. The battery transport protection device according to claim 19, characterized in that, The fire-fighting mechanism also includes a second driving component, which is used to drive the cutting component to cut the third support plate.

22. The battery transport protection device according to claim 15, characterized in that, The environmental parameters include at least one of temperature, combustible gas concentration, and gas pressure.

23. The battery transport protection device according to claim 15, characterized in that, The fire-fighting medium includes flame-retardant microspheres.

24. The battery transport protection device according to claim 23, characterized in that, The flame-retardant microspheres include at least one of glass microspheres, ceramic microspheres, and mineral microspheres.

25. The battery transport protection device according to claim 1, characterized in that, The lid includes a lid body and a lid frame, with the lid frame located on the side of the lid body facing the lid body.

26. The battery transport protection device according to claim 1, characterized in that, The battery transport protection device also includes a heat insulation component, which is disposed on the side of the box cover facing the box body; The heat insulation component includes a support plate and a ceramic fiber layer, wherein the ceramic fiber layer is disposed on the surface of the support plate opposite to the box cover.

27. The battery transport protection device according to claim 26, characterized in that, The thermal insulation component also includes an aerogel layer disposed on the surface of the support plate facing the lid.

28. The battery transport protection device according to claim 1, characterized in that, The battery transport protection device also includes a seal for sealing the gap between the box body and the box cover.

29. The battery transport protection device according to claim 1, characterized in that, One of the box body and the box lid is provided with a latch, and the other is provided with a bracket. The latch is connected to the bracket to lock the box lid to the box body.

30. The battery transport protection device according to claim 1, characterized in that, The outer circumference of the box cover is provided with a lifting part.

31. The battery transport protection device according to claim 1, characterized in that, The battery transport protection device also includes a bracket, which is disposed at the bottom of the first receiving cavity and is used to support the battery. The bracket is provided with a strap ring on its outer periphery.

32. The battery transport protection device according to claim 31, characterized in that, The bracket includes a bracket body and a tray. The bracket body has a multi-layered mesh structure, and the tray is disposed on the upper surface of the bracket body for contacting the battery.

33. The battery transport protection device according to claim 31, characterized in that, The battery transport protection device also includes a locking mechanism, which is used to limit the bracket in the opposite direction of gravity.

34. The battery transport protection device according to claim 1, characterized in that, The top of the box is provided with a first positioning part, and the bottom of the box is provided with a second positioning part that matches the first positioning part, for the two battery transport protection devices to be stacked along the direction of gravity.

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