Battery device and vehicle

Abstract

A battery device and a vehicle, the battery device is used for the vehicle, the battery device includes an armored box and a pressure relief valve and / or a pressure relief door, the armored box has a containing space for containing a battery module, the armored box is used for being mounted to the vehicle, the armored box is provided with an exhaust hole communicated with the containing space, the exhaust hole is used for being communicated with the outside space of the top of the vehicle and being isolated from the inside space of the vehicle, the pressure relief valve is installed at the exhaust hole, and the pressure relief valve is opened when the air pressure of the containing space is greater than a first preset value, and the volume of the armored box expansion is less than a set value when the air pressure of the containing space is greater than the first preset value;The pressure relief door is arranged at the top of the armored box and is located outside the containing space, and the pressure relief door is opened when the air pressure of the gas sprayed out of the exhaust hole is greater than a second preset value, thereby solving the problem of the vehicle spontaneous combustion and the major loss caused by the vehicle combustion when the accident occurs.

Description

Technical Field

[0001] This utility model relates to the field of battery safety technology, specifically to a battery device and a vehicle. Background Technology

[0002] Most new energy vehicles currently use large-capacity batteries, which are usually installed under the vehicle. When the battery catches fire or explodes, the flames emitted by the battery directly ignite the vehicle, causing the entire vehicle to catch fire rapidly, resulting in property damage and a high risk of personal injury or death. Utility Model Content

[0003] The purpose of this invention is to provide a battery device and a vehicle that solves the problem of flames burning the vehicle.

[0004] To achieve the objectives of this utility model, the following technical solution is provided:

[0005] In a first aspect, this utility model provides a battery device for a vehicle, the battery device comprising: an armored box having a accommodating space for accommodating a battery module, the armored box being mounted to the vehicle, the armored box having an exhaust port communicating with the accommodating space, the exhaust port being communicating with the external space on the top of the vehicle but isolated from the interior space; a pressure relief valve and / or a pressure relief door, the pressure relief valve being installed at the exhaust port and opening when the air pressure in the accommodating space is greater than a first preset value, and the volume of the armored box expanding when the air pressure in the accommodating space is greater than the first preset value being less than a set value; the pressure relief door being disposed on the top of the armored box and located outside the accommodating space, the pressure relief door opening when the air pressure of the gas ejected from the exhaust port is greater than a second preset value.

[0006] In one embodiment, the inner wall of the armored box is provided with a buffer layer and / or a heat insulation layer, and / or the outer surface of the armored box is provided with a buffer layer and / or a heat insulation layer.

[0007] In one embodiment, the battery device further includes a heat-conducting component and a heat-dissipating component, the heat-conducting component being connected to the armor box, and the heat-dissipating component being connected to the heat-conducting component, the heat-dissipating component being disposed on the outer surface of the top of the vehicle body.

[0008] In one embodiment, the heat-conducting element and the heat-dissipating element are detachably connected; when the temperature of the heat-dissipating element is lower than the temperature of the heat-conducting element, the heat-dissipating element is connected to the heat-conducting element; when the temperature of the heat-dissipating element is equal to or higher than the temperature of the heat-conducting element, the heat-dissipating element is separated from the heat-conducting element; or, the battery device further includes a sunshade assembly for being disposed on the outer surface of the top of the vehicle body; the sunshade assembly includes a driving element and a sunshade cloth, the driving element for driving the sunshade cloth to switch between an unfolded state and a retracted state, wherein when the sunshade cloth is unfolded, the sunshade cloth at least covers the heat-dissipating element, and when the sunshade cloth is retracted, the heat-dissipating element is exposed to the external space.

[0009] In one embodiment, the battery device further includes a fan and / or a heat exchanger, the fan being used to blow air onto at least one of the heat sink, the heat conductor, and the armored box; the heat exchanger is connected to the heat sink and is also used to connect to the vehicle's air conditioning system.

[0010] In one embodiment, the battery device further includes an exhaust pipe connected to the armored box. The exhaust pipe has an exhaust passage, one end of which communicates with the exhaust port, and the other end of which is exposed to the external space from the top of the vehicle body.

[0011] Secondly, the present invention also provides a vehicle, including a vehicle body and a battery device as described in any one of the embodiments of the first aspect, wherein the top of the vehicle body is provided with an installation port communicating with the interior space and the exterior space, and the gas discharged from the exhaust port of the armored box is discharged to the exterior space of the roof through the installation port.

[0012] In one embodiment, the armored box is installed between the rear seat and the rear bumper of the vehicle body, the armored box extends towards the roof and passes through the mounting opening, and the armored box is connected and fixed to the inner wall of the mounting opening by a fireproof ring.

[0013] In one embodiment, the battery device further includes an exhaust pipe, the armored box is mounted on the bottom of the vehicle, the exhaust pipe extends inside the vehicle body, one end is connected to the armored box, and the other end passes through the mounting port.

[0014] In one embodiment, the portion of the battery device corresponding to the roof is flush with the outer surface of the roof, or the battery device at least partially protrudes from the outer surface of the roof into the external space, and the portion of the battery device protruding into the external space is streamlinedly connected to the outer surface of the roof.

[0015] After the battery device of this utility model is installed in the vehicle, the exhaust port of the armored box is connected to the external space of the top of the vehicle body, thereby spraying high-temperature and high-pressure gas and flames into the external space of the top of the vehicle, which can prevent the vehicle body from burning and solve the problem of vehicle spontaneous combustion and the major losses caused by vehicle fire in the event of an accident. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a structural diagram of a vehicle according to one embodiment;

[0018] Figure 2 This is a structural diagram of a vehicle according to another embodiment;

[0019] Figure 3 This is a cross-sectional view of a vehicle according to one embodiment;

[0020] Figure 4 This is a cross-sectional view of a vehicle according to another embodiment;

[0021] Figure 5 This is a cross-sectional view of a vehicle according to another embodiment;

[0022] Figure 6 This is a cross-sectional view of a vehicle according to another embodiment;

[0023] Figure 7 This is a structural diagram of a pressure relief door according to one embodiment;

[0024] Figure 8 This is a structural diagram of a pressure relief door according to another embodiment;

[0025] Figure 9 A cross-sectional view of a battery device according to one embodiment;

[0026] Figure 10 This is a cross-sectional view of a battery device according to another embodiment;

[0027] Figure 11 This is a structural diagram of a heat sink according to one embodiment;

[0028] Figure 12 This is a structural diagram of a sunshade component according to one embodiment.

[0029] Explanation of reference numerals in the attached figures:

[0030] 1000 - Vehicles;

[0031] 100-Battery Unit;

[0032] 10-Armor box, 11-Exhaust vent, 12-Accommodation space, 13-Buffer layer, 14-Insulation layer;

[0033] 20-Fireproof ring;

[0034] 30 - Exhaust pipe, 31 - Exhaust passage

[0035] 40 - Pressure relief valve, 41 - Pressure relief gate, 411 - Pressure relief port, 412 - First gate, 413 - Second gate;

[0036] 50 - Thermal conductive component;

[0037] 60 - Heat sink, 61 - Heat sink fins;

[0038] 70-Shading assembly, 71-Driver, 72-Shading fabric, 73-Housing, 74-Opening, 75-Roller;

[0039] 80 - Fan, 81 - Heat exchanger;

[0040] 200 - Vehicle body, 201 - Floor, 202 - Roof, 203 - Front windshield, 204 - Rear windshield, 205 - Hood, 206 - Trunk cover, 207 - Mounting port, 208 - Baffle. Detailed Implementation

[0041] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of them. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0042] It should be noted that when a component is said to be "fixed" to another component, it can be directly on the other component or it can be in a middle component. When a component is said to be "connected" to another component, it can be directly connected to the other component or it may be in a middle component.

[0043] Unless otherwise defined, all technical and scientific terms used in this invention have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used in this specification is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used in this invention includes any and all combinations of one or more of the associated listed items.

[0044] The following detailed description, in conjunction with the accompanying drawings, outlines some embodiments of the present invention. Unless otherwise specified, the following embodiments and features can be combined with each other.

[0045] Please refer to Figures 1 to 6 This utility model embodiment provides a vehicle 1000, including a vehicle body 200 and a battery device 100. The vehicle body 200 of this utility model embodiment is similar in structure and appearance to existing vehicle bodies 200. After the battery device 100 is installed on the vehicle body 200, it constitutes a new energy vehicle capable of being electrically driven. It is understood that the vehicle 1000 can be purely electric or hybrid. The vehicle 1000 can be a sedan, SUV, or various types of family vehicles, commercial vehicles, and industrial vehicles such as buses and trucks, without limitation.

[0046] The vehicle 1000 of this utility model embodiment adopts a special design that can solve the problem of the flames emitted by the current battery burning the vehicle 1000. The following is a detailed description.

[0047] The vehicle body 200 may include a body, a front trunk, and a rear trunk. The body includes support beams, a floor 201, a roof 202, a windshield 203, and a rear windshield 204. The roof 202 may or may not have a sunroof; if a sunroof is included, it can be a small sunroof, a panoramic sunroof, etc., with no restrictions. The body enclosure forms a passenger compartment, which may include several seats. The front trunk can serve as a storage compartment (for pure electric drive) or an engine compartment (for hybrid drive), and is closed by an engine hood 205. The rear trunk serves as another storage compartment, and is closed by a tailgate 206. Optionally, the vehicle 1000 may also include an electronic monitoring system for detecting wiring aging.

[0048] The battery device 100 includes an armored box 10, which has high strength and excellent fire and explosion protection capabilities. It can be made of high-strength materials, but not limited to, nickel-chromium alloys. The armored box 10 contains the battery module. When the battery module catches fire or burns, the armored box 10 will not be damaged under high temperature and pressure, and will not deform or will only deform and expand to a small extent. The armored box 10 has a vent 11 for venting, allowing the high-temperature, high-pressure gases inside the armored box 10 to escape, thereby reducing the expansion force on the armored box 10 and preventing an explosion.

[0049] For ease of explanation, the terms used in this utility model are defined as follows: The top of the vehicle body 200 is at least one of the roof 202, the trunk lid 206, and the rear windshield 204. The bottom of the vehicle is the side of the floor 201 facing the ground. The external space is the environmental space outside the vehicle body 200, and the interior space is the passenger compartment, front trunk, rear trunk, and any other space enclosed by the vehicle body 200.

[0050] After the battery device 100 of this utility model embodiment is installed on the vehicle 1000, the exhaust port 11 of the armor box 10 is connected to the external space of the top of the vehicle body 200, thereby spraying high temperature and high pressure gas and flame into the external space of the top of the vehicle 1000, which can prevent the vehicle body 200 from burning, and solve the major losses caused by the spontaneous combustion of the vehicle 1000 and the burning of the vehicle 1000 in the event of an accident.

[0051] In this embodiment of the present invention, the battery device 100 can be installed at any position on the vehicle body 200, and any feasible method can be set to allow the battery device 100 to vent in the external space on the top of the vehicle body 200, without any restrictions.

[0052] In one embodiment, please refer to Figure 3 The armored box 10 is installed in the vehicle interior space. The top of the vehicle body 200 has an installation port 207 that connects the interior space and the exterior space. The gas discharged from the exhaust port 11 of the armored box 10 is discharged to the exterior space of the roof through the installation port 207.

[0053] Optionally, the armored box 10 is installed between the rear seat and the rear bumper of the vehicle body 200, extending towards the roof and passing through the mounting opening 207. Further optionally, the armored box 10 can be installed in the trunk's storage compartment. Since the top of the vehicle body 200 corresponding to the trunk is the rear windshield 204 or the trunk lid 206, the mounting opening 207 can be provided in the rear windshield 204 or the trunk lid 206. Yet another option is to install the armored box 10 near the rear seat, i.e., behind the rear seat, at a distance less than that from the rear bumper, to avoid collision with the armored box 10 in the event of a rear-end collision. In this embodiment, the interior space of a conventional vehicle 1000 can be slightly modified to allow the armored box 10 to be installed within the interior space, and a suitable mounting opening 207 can be provided on the roof of the vehicle 1000 so that the armored box 10 can vent gas to the outside space through the mounting opening 207. Optionally, the armor box 10 is spaced apart from the left and right sides of the vehicle body 200, that is, the mounting port 207 is located in the middle of the vehicle body 200 in the left-right direction, so as to reduce the risk of damage to the armor box 10 when the vehicle 1000 is subjected to a side impact.

[0054] Optionally, the inner wall of the armored box 10 and the mounting port 207 is connected and fixed by a fireproof ring 20. The fireproof ring 20 is annular and made of a non-combustible material that can have heat insulation properties; it can be made of ceramic fiber, rock wool, etc., without limitation. By setting the fireproof ring 20, the high temperature of the armored box 10 can be prevented from being conducted to the vehicle body 200, and flammable materials can also be prevented from igniting the vehicle body 200.

[0055] In another embodiment, please refer to Figures 4 to 6 The battery device 100 also includes an exhaust pipe 30. The armored box 10 is mounted on the bottom of the vehicle. One end of the exhaust pipe 30 is connected to the armored box 10, and the other end extends to the external space of the vehicle roof. The exhaust pipe 30 has an exhaust passage 31, one end of which is connected to the exhaust port 11, and the other end is exposed to the external space from the top of the vehicle body 200. The exhaust pipe 30 is made of a high-temperature resistant material, which can be stainless steel, high-temperature alloy, ceramic composite material, or a material coated with a high-temperature resistant ceramic coating on a common material, etc., without limitation. The exhaust pipe 30 is used to exhaust the high-temperature and high-pressure gas of the armored box 10 to the external space of the top of the vehicle body 200, and can also prevent flames from directly burning the vehicle 1000. Optionally, the exhaust pipe 30 extends inside the vehicle body 200, with one end connected to the armored box 10 and the other end passing through the mounting port 207. Specifically, the exhaust pipe 30 is designed not to encroach on the normal seating space of the passenger compartment. It can extend close to the door pillars, B-pillars, or other locations along the vehicle body 200, or it can extend near the seat back; there are no restrictions. In this embodiment, existing new energy vehicles can be slightly modified by adding an armored box 10 and an exhaust pipe 30 to the battery installed under the vehicle, which can be accomplished at a relatively low cost. Alternatively, please refer to... Figure 5 The exhaust pipe 30 can also be located in the middle of the vehicle 1000, with the pressure relief valve 41 corresponding to the exhaust pipe 30. Specifically, the exhaust pipe 30 is located between the front and rear seats. Optionally, the exhaust pipe 30 can be located inside or outside the vehicle 1000, without limitation. For further options, please refer to [reference needed]. Figure 4 and Figure 5 The armored box 10 can be installed on the floor 201, that is, directly below the driver's compartment of the vehicle 1000. Optional, please refer to... Figure 6 The armored box 10 can be installed in the trunk of the vehicle 1000, that is, directly below the trunk lid 206.

[0056] It should be understood that, considering that the possible collision locations when the vehicle 1000 is in motion are in all directions, the armor box 10 and the exhaust pipe 30 should be a certain distance away from the four edges of the vehicle body 200, in order to avoid deformation or breakage of the armor box 10 or the exhaust pipe 30 during a collision, which would affect the exhaust in the external space on the top of the vehicle 1000.

[0057] Optionally, the vehicle body 200 also includes baffles 208. At least two baffles 208 are spaced apart on either side of the mounting opening 207 in the left-right direction of the vehicle 1000. This prevents the flames ejected or the gases exhausted from the battery device 100 through the pressure relief valve 41 from dissipating to the outer periphery of the vehicle under the action of the baffles 208, thus preventing injury to pedestrians. Optionally, the baffles 208 are fin-shaped to reduce wind resistance.

[0058] For various configurations of the battery device 100, it is preferable to minimize the reduction in aerodynamic performance of the vehicle 1000. In one embodiment, the portion of the battery device 100 corresponding to the roof is flush with the outer surface of the roof. Thus, the battery device 100 does not protrude from the outer surface of the roof and does not affect the aerodynamic performance of the vehicle 1000. In another embodiment, the battery device 100 at least partially protrudes from the outer surface of the roof into the external space, and the portion of the battery device 100 protruding into the external space has a streamlined connection with the outer surface of the roof. A streamlined connection means that the shape of the portion of the battery device 100 protruding into the external space is streamlined, and the connection between this portion and the outer surface of the roof is also streamlined. This minimizes the reduction in aerodynamic performance. The above configurations also maintain a relatively complete, uniform, and aesthetically pleasing appearance of the vehicle 1000.

[0059] The battery device 100 of this utility model embodiment will be further described in detail below.

[0060] Please refer to Figures 1 to 6 The battery device 100 of this utility model embodiment is used in a vehicle 1000. The battery device 100 includes an armored box 10 and also includes a pressure relief valve 40 and / or a pressure relief door 41.

[0061] Please refer to Figure 9 and Figure 10 The armor box 10 has a housing space 12 for housing the battery module. The armor box 10 is used to be installed in the vehicle 1000. The armor box 10 has an exhaust port 11 that communicates with the housing space 12. The exhaust port 11 communicates with the external space on the top of the vehicle 1000, but is isolated from the interior space of the vehicle.

[0062] The armored box 10 can be roughly rectangular in shape, and can be a thin-walled structure made of multiple plates connected in sequence. The plates can be welded and fixed together, or at least some of the plates can be an integral structure.

[0063] For example, when the armored box 10 is installed in the vehicle's interior space, the bottom and four sides of the armored box 10 are formed by stamping or casting into a single piece. The top plate is welded after the battery module is installed. This ensures that the plates in the other five directions of the armored box 10, excluding the top plate, have high and consistent strength, are less prone to expansion and deformation, and have high controllability over deformation towards the vehicle's interior space, thus minimizing damage to the vehicle's main body 200. The top plate, using a welding process, also has higher strength compared to other connection methods. The thickness of each plate is within a suitable range, such as 5mm-20mm, specifically 5mm, 10mm, 15mm, 20mm, etc. This thickness balances weight and strength requirements while keeping costs under control. If the plate thickness is less than 5mm, the strength may be insufficient, or higher-grade materials may be required, resulting in higher and uncontrollable costs. If the plate thickness is greater than 20mm, the weight will be too heavy, leading to an excessively high curb weight for the vehicle 1000 after installation, which is detrimental to lightweight design.

[0064] For example, when the armored box 10 is installed under the vehicle, the top plate of the armored box 10 (i.e. the plate facing away from the ground, that is, the plate adjacent to the bottom plate of the vehicle body 200) can be welded, and the other plates can be integrated into a single structure.

[0065] The armor box 10 can also be cylindrical, prismatic, or other shapes, without limitation. In embodiments where the armor box 10 is located under the vehicle, the armor box 10 can be adapted to the shape of the current battery pack, that is, the armor box 10 is placed over the current battery pack, and the armor box 10 and the battery pack are placed as close as possible to each other.

[0066] The exhaust port 11 is located on the top of the armored box 10. When the exhaust port 11 exhausts directly into the external space of the roof, the gas can be directly ejected upwards through the exhaust port 11, without directly hitting the vehicle body 200. When the exhaust port 11 exhausts through the exhaust pipe 30, it also reduces the bends in the exhaust pipe 30, allowing for faster exhaust. In the embodiment where the exhaust port 11 exhausts directly into the external space of the roof, the exhaust port 11 can be located near the middle area of ​​the top of the armored box 10, as far away from the surrounding edges as possible. This reduces the amount of heat transferred to the surrounding edges and then to the vehicle body 200 during exhaust.

[0067] In the embodiment where a pressure relief valve 40 is provided, the pressure relief valve 40 is installed at the vent 11, and the pressure relief valve 40 opens when the air pressure in the accommodating space 12 is greater than a first preset value. When the air pressure in the accommodating space 12 is greater than the first preset value, the volume of the armor box 10 that expands is less than the set value.

[0068] The pressure relief valve 40 can employ a structure where a groove is etched into the plate to create a weak area, as is the case in related technologies, or it can be an independent valve; there are no restrictions. When the air pressure within the accommodating space 12 is low and exceeds a first preset value, the pressure relief valve 40 does not activate, closing the exhaust port 11 to isolate the accommodating space 12 from the outside environment, allowing the battery module to operate normally. If the battery module malfunctions and generates a large amount of gas in a short period, causing the air pressure in the accommodating space 12 to rapidly increase to or exceed the first preset value, the pressure relief valve 40 activates. This is achieved, for example, by the weak area at the pressure relief valve 40 rupturing or the valve opening, allowing the accommodating space 12 to connect with the external space of the vehicle roof and release exhaust gas. The first preset value can be set according to actual needs and is not limited.

[0069] In the embodiment where a pressure relief door 41 is provided, the pressure relief door 41 is located on top of the armored box 10 and outside the accommodating space 12. The pressure relief door 41 opens when the gas pressure emitted from the exhaust port 11 exceeds a second preset value. The pressure relief door 41 can be connected to the armored box 10 and is located above the top plate of the armored box 10. Specifically, the top plate of the armored box 10 can be moved downwards a certain distance from the opening 74 at the top of the armored box 10, and the pressure relief door 41 is positioned at the opening 74 at the top of the armored box 10. The space between the pressure relief door 41 and the top plate of the armored box 10 is enclosed by the top plate, the surrounding side plates, and the pressure relief door 41. The pressure relief door 41 is a normally closed door, meaning that it is closed when the vehicle 1000 is operating normally and the battery device 100 is operating normally. When pressure relief is required, the pressure relief door 41 can be opened passively or actively to relieve pressure.

[0070] Optionally, the pressure relief door 41 is spaced apart from both the left and right sides of the vehicle body 200, that is, the pressure relief door 41 is located in the middle of the mounting port 207, in order to reduce the risk that the pressure relief door 41 will be damaged and unable to open properly when the vehicle 1000 is subjected to a side impact.

[0071] It is understood that at least one of a pressure relief valve 40 and a pressure relief door 41 can be installed on the armored box 10. When both are installed, pressure is first released through the pressure relief valve 40 and then through the pressure relief door 41. When the vehicle 1000 is operating normally, the exhaust port 11 is sealed by the pressure relief valve 40 and / or the pressure relief door 41 to prevent rainwater, dust and other foreign objects from entering the accommodating space 12 through the exhaust port 11 and affecting the operation of the battery module.

[0072] In the embodiment where the pressure relief door 41 is passively depressurized, it can be configured to directly open the pressure relief door 41 when the air pressure ejected from the exhaust port 11 reaches a second preset value. The pressure relief door 41 can be opened by rotating or translating relative to the armored box 10, or it can be directly separated from the armored box 10. In the embodiment where the pressure relief door 41 is actively depressurized, sensors and drive mechanisms can be installed. The sensors detect the air pressure ejected from the exhaust port 11, and when it reaches the second preset value, the drive mechanism drives the pressure relief door 41 to open. The pressure relief door 41 can be any one of a double door, a telescopic door, a magnetic door, or a detachable door.

[0073] Optional, please refer to Figure 7 and Figure 8 The pressure relief valve 41 has a pressure relief port 411, a first door 412, and a second door 413. The pressure relief port 411 communicates with the exhaust port 11 to eject gas or flame. The first door 412 and the second door 413 are configured to open opposite each other to isolate or connect the pressure relief port 411 to the external space. Optionally, when the pressure relief valve 41 exhausts gas, the first door 412 and the second door 413 can be opened under pressure to connect the pressure relief port 411 to the external space. Optionally, at least one of the pressure relief port 411, the first door 412, and the second door 413 is also equipped with a sensor for detecting flame, and controlling the first door 412 and the second door 413 to open when a flame is detected to connect the pressure relief port 411 to the external space. (Optional, please refer to...) Figure 7 The inner wall of the pressure relief port 411 can extend vertically. (Optional, please refer to...) Figure 8 The inner wall of the pressure relief port 411 can also gradually narrow from the bottom to the top of the vehicle 1000.

[0074] Optional, please refer to Figure 2 There can be multiple pressure relief valves 41, which are spaced apart from each other. Correspondingly, there are also multiple exhaust pipes 30 and pressure relief valves 40, each corresponding to one of the multiple pressure relief valves 41.

[0075] Please refer to Figure 9 and Figure 10 The inner wall of the armored box 10 is provided with a buffer layer 13 and / or a heat insulation layer 14, and / or the outer surface of the armored box 10 is provided with a buffer layer 13 and / or a heat insulation layer 14.

[0076] In one specific embodiment, a buffer layer 13 is disposed on the outer surface of the armored box 10 to prevent damage to the armored box 10 caused by the vehicle body structure when the vehicle 1000 collides or when it bounces and shakes during driving. Optionally, a buffer layer 13 may also be disposed on the inner wall of the armored box 10 to prevent damage to the battery module.

[0077] The heat insulation layer 14 is disposed on the inner wall of the armored box 10 to reduce the influence of the external ambient temperature on the battery module, while preventing the vehicle body structure from damaging the heat insulation layer 14 and reducing its heat insulation effect. It also reduces the corrosion and other damage caused by external environmental factors to the heat insulation layer 14. Optionally, the outer surface of the armored box 10 may also be provided with the heat insulation layer 14 to further improve its heat preservation effect.

[0078] Optionally, the buffer layer 13 can be made of materials such as polyurethane, polyethylene, silicone, aluminum foam, foamed polypropylene, and rubber, without limitation. Optionally, the heat insulation layer 14 can be made of materials such as aerogel, polyurethane, and ceramic fiber, without limitation.

[0079] Please refer to Figures 1 to 6 The battery device 100 also includes a heat-conducting component 50 and a heat-dissipating component 60. The heat-conducting component 50 is connected to the armor box 10, and the heat-dissipating component 60 is connected to the heat-conducting component 50. The heat-dissipating component 60 is used to be installed on the outer surface of the top of the vehicle body 200.

[0080] Please refer to Figure 11 The heat sink 60 includes multiple heat dissipation fins 61, all of which are connected to the heat conductor 50 to transfer heat from the heat conductor 50 to the air. When the vehicle 1000 is in motion, the airflow through the heat dissipation fins 61 is relatively fast, which improves the heat dissipation effect of the heat dissipation fins 61. The heat conductor 50 can be attached to one or more outer surfaces of the armor box 10 to increase the contact area between the heat conductor 50 and the armor box 10, thereby improving the heat conduction effect of the heat conductor 50.

[0081] Optionally, when a buffer layer 13 and / or a heat insulation layer 14 are provided on the outer surface of the armor box 10, the heat-conducting element 50 can pass through the buffer layer 13 and / or the heat insulation layer 14 to contact the armor box 10. Specifically, a clearance groove or through hole can be opened on the buffer layer 13 and / or the heat insulation layer 14 to allow the heat-conducting element 50 to contact the armor box 10.

[0082] By setting up a heat-conducting component 50 and a heat-dissipating component 60, the heat-conducting component 50 is connected to the armor box 10, and the heat-dissipating component 60 is connected to the heat-conducting component 50. The heat-dissipating component 60 is used to be set on the outer surface of the top of the vehicle body 200, so that the battery module can dissipate heat through the heat-conducting component 50 and the heat-dissipating component 60, ensuring the normal working state of the battery module.

[0083] In one embodiment, the heat-conducting element 50 and the heat-dissipating element 60 are detachably connected. When the temperature of the heat-dissipating element 60 is lower than the temperature of the heat-conducting element 50, the heat-dissipating element 60 is connected to the heat-conducting element 50. When the temperature of the heat-dissipating element 60 is equal to or higher than the temperature of the heat-conducting element 50, the heat-dissipating element 60 is separated from the heat-conducting element 50.

[0084] When the vehicle 1000 is in motion, the airflow velocity relative to the heat sink 60 increases, causing the temperature of the heat sink 60 to drop below the temperature of the heat conductor 50, at which point the heat sink 60 connects with the heat conductor 50. Specifically, the multiple cooling fins 61 of the heat sink 60 can rotate or move relative to the heat conductor 50. When the temperature of the heat sink 60 is lower than the temperature of the heat conductor 50, the cooling fins 61 rotate or move to connect with the heat conductor 50 to dissipate heat from it. When the temperature of the heat sink 60 is equal to or higher than the temperature of the heat conductor 50, the cooling fins 61 rotate or move to separate from the heat conductor 50.

[0085] By setting the heat-conducting component 50 and the heat-dissipating component 60 to be detachably connected, when the temperature of the heat-dissipating component 60 is lower than the temperature of the heat-conducting component 50, the heat-dissipating component 60 and the heat-conducting component 50 are connected. When the temperature of the heat-dissipating component 60 is equal to or higher than the temperature of the heat-conducting component 50, the heat-dissipating component 60 and the heat-conducting component 50 are separated. This prevents the temperature of the heat-conducting component 50 from rising when the ambient temperature is high, thereby preventing the temperature of the battery module inside the armor box 10 from rising.

[0086] In another implementation method, please refer to Figure 11 and Figure 12 The battery device 100 also includes a sunshade assembly 70, which is disposed on the outer surface of the top of the vehicle body 200. The sunshade assembly 70 includes a drive member 71 and a sunshade cloth 72. The drive member 71 drives the sunshade cloth 72 to switch between an unfolded state and a retracted state. When the sunshade cloth 72 is unfolded, it at least covers the heat sink 60. When the sunshade cloth 72 is retracted, the heat sink 60 is exposed to the external space. The sunshade assembly 70 is located behind the heat sink 60, and the drive member 71 drives the sunshade cloth 72 to move from the rear to the front of the vehicle 1000.

[0087] Specifically, the sunshade assembly 70 also includes a housing 73, with an opening 74 on the surface of the housing 73 facing the heat sink 60. A sunshade cloth 72 is wound around a rotating roller 75. A drive unit 71 is located at one or both ends of the rotating roller 75 and is connected to the roller 75 for transmission. The drive unit 71 drives the rotating roller 75 to rotate, releasing or retracting the sunshade cloth 72, thus switching the sunshade cloth 72 between an unfolded state and a retracted state. When the battery device 100 vents air to the outside, the drive unit 71 drives the sunshade cloth 72 into the retracted state. Optionally, if the battery device 100 catches fire, the sunshade cloth 72 can be burned to prevent the vent 11 from becoming blocked.

[0088] Optionally, one of the heat sink 60 and the sunshade cloth 72 is provided with a guide member, and the other is provided with a guide groove that cooperates with the guide member. The guide member is used to move in the guide groove so that the sunshade cloth 72 can move according to a preset trajectory, preventing motion interference between the sunshade cloth 72 and the heat sink fins 61.

[0089] By setting a sunshade assembly 70, which is used to be installed on the outer surface of the top of the vehicle body 200, the sunshade assembly 70 includes a drive member 71 and a sunshade cloth 72. The drive member 71 is used to drive the sunshade cloth 72 to switch between an unfolded state and a retracted state. When the sunshade cloth 72 is in the unfolded state, the sunshade cloth 72 at least covers the heat sink 60. When the sunshade cloth 72 is in the retracted state, the heat sink 60 is exposed to the external space, so that the contact area between the heat sink 60 and the outside is reduced when the sunshade cloth 72 is in the unfolded state, preventing the external high temperature from affecting the battery module, and at the same time preventing external impurities from entering the heat sink 60. When the sunshade cloth 72 is in the retracted state, the heat sink 60 is exposed to the external space, so that the heat conduction component 50 dissipates heat through the heat sink 60.

[0090] Please refer to Figure 1 and Figure 2 The battery device 100 also includes a fan 80 and / or a heat exchanger 81, the fan 80 being used to blow air onto at least one of the heat sink 60, the heat conductor 50, and the armor box 10; the heat exchanger 81 being connected to the heat sink 60 and being used to connect to the air conditioning system of the vehicle 1000.

[0091] Optionally, the fan 80 can be located at the end of the heat sink 60 away from the sun shading assembly 70, or below the heat sink fins 61 of the heat sink 60, or inside the housing 73 of the sun shading assembly 70 and blowing air onto the heat sink 60 through the opening 74 of the housing 73. The fan 80 can also be located inside the vehicle body to blow air onto the heat conduction component 50 and / or the armor box 10. Optionally, the arrangement of the heat exchanger 81 is similar to that of the fan 80, and will not be described in detail here.

[0092] By providing a fan 80 and / or a heat exchanger 81, the fan 80 is used to blow air onto at least one of the heat sink 60, the heat conductor 50, and the armor box 10; the heat exchanger 81 is connected to the heat sink 60 and is used to connect to the air conditioning system of the vehicle 1000, so that the vehicle 1000 can dissipate heat through the fan 80 and / or the heat exchanger 81, further improving the heat dissipation capacity of the battery device 100.

[0093] In the description of the embodiments of this utility model, it should be noted that the orientation or positional relationship of the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and other indicators are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0094] The above-disclosed embodiments are merely preferred embodiments of the present utility model and should not be construed as limiting the scope of the present utility model. Those skilled in the art can understand that implementing all or part of the above-described embodiments and making equivalent changes in accordance with the claims of the present utility model are still within the scope of the present utility model.

Claims

1. A battery device, characterized in that, For use in a vehicle, the battery device includes: An armored box has a storage space for housing a battery module. The armored box is for installation in a vehicle. The armored box has an exhaust port that communicates with the storage space and is connected to the external space on the top of the vehicle, while being isolated from the interior space. A pressure relief valve and / or a pressure relief door are provided. The pressure relief valve is installed at the vent and opens when the air pressure in the accommodating space is greater than a first preset value. When the air pressure in the accommodating space is greater than the first preset value, the volume of the armored box that expands is less than a set value. The pressure relief door is located on the top of the armored box and outside the accommodating space. The pressure relief door opens when the air pressure of the gas ejected from the vent is greater than a second preset value.

2. The battery device according to claim 1, characterized in that, The inner wall of the armored box is provided with a buffer layer and / or a heat insulation layer, and / or the outer surface of the armored box is provided with a buffer layer and / or a heat insulation layer.

3. The battery device according to claim 1, characterized in that, The battery device also includes a heat-conducting component and a heat-dissipating component. The heat-conducting component is connected to the armor box, and the heat-dissipating component is connected to the heat-conducting component. The heat-dissipating component is used to be installed on the outer surface of the top of the vehicle body.

4. The battery device according to claim 3, characterized in that, The heat-conducting component and the heat-dissipating component are detachably connected; when the temperature of the heat-dissipating component is lower than the temperature of the heat-conducting component, the heat-dissipating component is connected to the heat-conducting component; when the temperature of the heat-dissipating component is equal to or higher than the temperature of the heat-conducting component, the heat-dissipating component is separated from the heat-conducting component. or, The battery device also includes a sunshade assembly for mounting on the outer surface of the top of the vehicle body; The sunshade assembly includes a drive unit and a sunshade cloth. The drive unit is used to drive the sunshade cloth to switch between an unfolded state and a retracted state. When the sunshade cloth is in the unfolded state, it at least covers the heat dissipation component. When the sunshade cloth is in the retracted state, the heat dissipation component is exposed to the external space.

5. The battery device according to claim 3, characterized in that, The battery device further includes a fan and / or a heat exchanger, the fan being used to blow air onto at least one of the heat sink, the heat conductor, and the armored box; the heat exchanger is connected to the heat sink and is used to connect to the vehicle's air conditioning system.

6. The battery device according to claim 1, characterized in that, The battery device also includes an exhaust pipe connected to the armored box. The exhaust pipe has an exhaust channel, one end of which is connected to the exhaust port, and the other end is exposed to the external space from the top of the vehicle body.

7. A vehicle, characterized in that, The vehicle includes a vehicle body and a battery device as described in any one of claims 1 to 6. The top of the vehicle body has an installation port that connects the interior space and the exterior space. Gas discharged from the exhaust port of the armored box is discharged to the exterior space on the roof of the vehicle through the installation port.

8. The vehicle according to claim 7, characterized in that, The armored box is installed between the rear seat and the rear bumper of the vehicle body. The armored box extends towards the roof and passes through the mounting opening. The armored box is connected and fixed to the inner wall of the mounting opening by a fireproof ring.

9. The vehicle according to claim 7, characterized in that, The battery device also includes an exhaust pipe. The armored box is installed under the vehicle. The exhaust pipe extends inside the vehicle body, with one end connected to the armored box and the other end passing through the mounting port.

10. The vehicle according to any one of claims 7 to 9, characterized in that, The portion of the battery device corresponding to the roof is flush with the outer surface of the roof, or at least part of the battery device protrudes from the outer surface of the roof into the external space, and the portion of the battery device protruding into the external space is streamlinedly connected to the outer surface of the roof.

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