Electric vehicle body and electric vehicle

Abstract

The utility model provides an electric vehicle body and an electric vehicle, and mainly solves the problems of personal injury and huge property loss after thermal runaway of a battery pack of the existing electric vehicle. The electric vehicle body comprises a frame, a power supply module and a thermal runaway flue gas treatment device, the power module and the frame are of an integrated structure, and the thermal runaway flue gas treatment device is used for treating thermal runaway flue gas generated by the power module. According to the utility model, the power supply module and the frame of the electric vehicle can not be detached, and when the power supply module is charged, the whole electric vehicle can only be placed at a specified charging point for charging, so that the power supply module is prevented from being taken out from the frame of the electric vehicle; and huge loss of personnel and property is caused after thermal runaway of the power supply module. And meanwhile, the thermal runaway flue gas treatment device can treat thermal runaway flue gas generated by the power module, so that the safety of the electric vehicle is improved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to electric vehicle battery safety field, concretely relates to a kind of electric vehicle body and electric vehicle. BACKGROUND

[0002] Battery pack is the important component of electric vehicle, mainly provides driving power for electric vehicle.

[0003] Part of existing driving personnel removes battery pack from the frame of electric vehicle, and separately charges battery pack at resident building or office building and the like non-point charging point.When battery pack is separately charged at non-point charging point, under the influence of overcharge, overheating and the like, the diaphragm of each single battery in battery pack is easily collapsed and internal short circuit occurs, to cause battery pack to occur thermal runaway. When battery pack thermal runaway occurs, a large amount of thermal runaway flue gas is generated, and combustion or explosion also occurs, to cause extremely serious personal injury and huge property loss. SUMMARY

[0004] To solve the problem of existing battery pack thermal runaway, the utility model provides a kind of electric vehicle body and electric vehicle.

[0005] To achieve the above-mentioned purpose, the technical scheme of the utility model is:

[0006] A kind of electric vehicle body, including frame, power module and thermal runaway flue gas processing device;The power module and frame are integrated structure;Thermal runaway flue gas processing device is used to process the thermal runaway flue gas generated by power module.

[0007] Further, the power module includes box and battery module;The box and frame are integrated structure, the battery module is arranged in the box, and the battery module and the box are insulated, and the thermal runaway flue gas processing device is connected with the explosion venting part on the box.

[0008] Further, the power module includes battery module, the frame has enclosed battery compartment, the battery module is arranged in the battery compartment, and the battery module and the battery compartment are insulated, and the thermal runaway flue gas processing device is connected with the explosion venting part on the battery compartment.

[0009] Further, the battery compartment is enclosed cavity formed in the footboard of frame or the seat of frame.

[0010] Further, the thermal runaway flue gas processing device includes ignition device arranged on the frame and flue gas conveying pipe, and the ignition device is connected with power module through flue gas conveying pipe, to ignite and process the thermal runaway flue gas generated by power module.

[0011] Further, the ignition device comprises an outer shell, an ignition assembly and a fireproof cover; the fireproof cover is connected to the outer shell and forms a combustion zone with a top plate of the outer shell; the outer shell is provided with a flue gas channel in communication with the combustion zone; the ignition assembly is used for igniting the thermal runaway flue gas of the combustion zone.

[0012] Further, the outer shell is provided with a plurality of flue gas channels in communication with the combustion zone, for dispersing and introducing the thermal runaway flue gas into the combustion zone, wherein the flue gas channel comprises a mixing channel and a first channel in communication, the mixing channel is in communication with the combustion zone, and the mixing channel is provided with an oxygen mixing port in communication with the external environment.

[0013] Further, the thermal runaway flue gas treatment device further comprises at least one cooling filter tank, a flue gas inlet of the cooling filter tank is used for being connected to the power module, and a flue gas outlet is connected to the ignition device through a flue gas conveying pipe; the cooling filter tank is provided with a cooling liquid, for cooling and filtering the thermal runaway flue gas.

[0014] Further, the flue gas inlet and the flue gas outlet of the cooling filter tank are each provided with a one-way valve, and the cooling filter tank is provided with a shunt pipe, for shunting the thermal runaway flue gas entering the cooling filter tank.

[0015] Further, the thermal runaway flue gas treatment device comprises a flue gas conveying pipe and a flue gas treatment pipe arranged on the vehicle frame, the flue gas treatment pipe is connected to the power module through the flue gas conveying pipe, and is used for adsorbing the thermal runaway flue gas.

[0016] Further, the flue gas treatment pipe comprises an adsorption pipe and an adsorption filter unit arranged in the adsorption pipe, and the adsorption filter unit comprises N adsorption filter layers arranged in sequence.

[0017] Further, the flue gas conveying pipe is a hose, and the length of the flue gas conveying pipe is greater than 0.2m.

[0018] The utility model further provides an electric vehicle, including above-mentioned electric vehicle body.

[0019] Compared with the prior art, the utility model technical scheme has the following advantages:

[0020] 1. The utility model discloses a power module and the frame of electric vehicle are set to integral structure, namely the power module is fixed on the frame of electric vehicle, and the frame of electric vehicle is not detachable, and this kind of connection mode has the following advantages: first, the power module and the frame are not detachable, when charging the power module, only the whole electric vehicle can be placed in the specified charging point and charges, avoids the driver to take out the power module from the frame of electric vehicle, and when charging in the non specified charging point, the huge loss caused by power module thermal runaway to personnel and property. Secondly, the power module is not detachable and is installed on the frame, and the power module and the frame are integral structure, and the power module does not shake on the frame, avoids the performance problem of power module due to shaking or vibration or the thermal runaway risk due to shaking or vibration, and improves the safety of electric vehicle. Thirdly, the power module is not detachable and is fixed on the frame of electric vehicle, increases the anti-theft performance of power module, and guarantees the safety of power module.

[0021] In addition, when the power module thermal runaway occurs, the thermal runaway smoke treatment device on the frame of electric vehicle can timely treat the thermal runaway smoke generated by the power module, avoid the problem of burning or explosion caused by the thermal runaway smoke after discharging, and improve the safety of electric vehicle.

[0022] 2. In the electric vehicle body of the utility model, the power module includes a box body and a battery module, the battery module is arranged in the box body, and the box body is integrally connected with the frame. This way can improve the existing battery pack. The box body of the battery pack can be welded or glued on the frame, which is convenient to operate.

[0023] 3. In the electric vehicle body of the utility model, the power module includes a battery module, the frame has a closed battery compartment in the seat or the footboard, and the battery module is arranged in the battery compartment. This structure can completely avoid disassembling the power module from the frame of electric vehicle, further ensuring the non-detachability of the power module.

[0024] 4. In the electric vehicle body of the utility model, the thermal runaway smoke treatment device includes an ignition device, which can controllably ignite the thermal runaway smoke generated by the power module to avoid the safety hazard caused by the thermal runaway smoke after discharging.

[0025] 5. In the electric vehicle body of the utility model, the shell of the ignition device has a plurality of smoke channels, which disperse the thermal runaway smoke into the combustion zone. The thermal runaway smoke is dispersed and ignited, which can effectively reduce the flame height when the thermal runaway smoke burns, so as to control the burning flame within a certain height range, improving the safety of the whole ignition device in use.

[0026] 6. The electric vehicle body of the utility model, the flue gas channel includes the mixed channel and the first channel which communicate in turn, the oxygen mixing mouth sends the air outside to the mixed channel, mixes after the hot failure flue gas which the first channel input transports to the combustion area to carry out the combustion, this kind of hot failure flue gas and oxygen mixes the mode before ignition, make the hot failure flue gas combustion more fully, and the height of combustion flame further reduces.

[0027] 7. The electric vehicle body of the utility model, the hot failure flue gas treatment device includes cooling filter jar and ignition device, when the power module in any single battery occurs hot failure, this cooling filter jar and ignition device can control the processing of hot failure flue gas, avoid the security risk produced after hot failure flue gas discharges. At the same time, cooling filter jar cools the hot failure flue gas before being ignited by ignition device, to reduce the temperature of hot failure flue gas, and then avoid the high-temperature hot failure flue gas damage the parts in ignition device; At the same time, the cooling filter jar processes the electrolyte and impurities carried in the hot failure flue gas, so that the processed hot failure flue gas is gaseous substance, when the gaseous hot failure flue gas enters ignition device to burn, the combustion flame is relatively stable, avoid the defects such as flame splashing, unstable flame when the electrolyte and impurities in hot failure flue gas burn with combustible gas together; At the same time, the hot failure flue gas is discharged at relatively stable flow rate after cooling and filtering in cooling filter jar, avoid the security risk of sudden increase of hot failure flue gas instantaneous pressure, hot failure flue gas cannot be ignited in time or combustion flame suddenly becomes large, improve the safety of electric vehicle use.

[0028] 8. The electric vehicle body of the utility model, the flue gas inlet and flue gas outlet of cooling filter jar are equipped with check valve, two check valves avoid the cooling liquid in cooling filter jar to enter power module and ignition device, cause damage to power module and ignition device, at the same time, two check valves also avoid the volatilization of cooling liquid in cooling filter jar, and then the cooling liquid in cooling filter jar continuously maintains better processing effect after long-time use of power module. In addition, the cooling filter jar is equipped with a shunt pipe, which disperses and shunts the hot failure flue gas, and the hot failure flue gas after shunting fully contacts with the cooling liquid in the cooling filter jar, thereby improving the processing effect of the cooling filter jar and making the hot failure flue gas processing more thorough.

[0029] 9. The electric vehicle body of the utility model, the hot failure flue gas treatment device includes flue gas treatment pipe, the flue gas treatment pipe orderly and directionally discharges the hot failure flue gas in power module, avoid the risk of gathering combustion or explosion of hot failure flue gas, improve the safety of power module; At the same time, the flue gas treatment pipe can adsorb the hot failure flue gas discharged by the power module, so that the discharged gas is not easy to burn, avoiding the security risk produced after hot failure flue gas discharges.

[0030] The other advantages, objects and features of the present application will be in part apparent and in part pointed out hereinafter by way of illustration and exemplification of the application. BRIEF DESCRIPTION OF DRAWINGS

[0031] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or the prior art description. Obviously, the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained from these drawings without creative labor.

[0032] Figure 1 It is a structural schematic diagram of the electric vehicle body in example 1 (the power module is located in the footboard);

[0033] Figure 2 It is a structural schematic diagram of the power module in the electric vehicle body in example 1;

[0034] Figure 3 It is a structural schematic diagram of the electric vehicle body in example 1 (the power module is located in the seat);

[0035] Figure 4 It is a structural schematic diagram of the thermal runaway smoke treatment device in example 1;

[0036] Figure 5 It is an explosion diagram of the thermal runaway smoke treatment device in example 1;

[0037] Figure 6 It is a structural schematic diagram of the shell body in the ignition device in example 1 Figure 1 ;

[0038] Figure 7 It is a structural schematic diagram of the shell body in the ignition device in example 1 Figure 2 ;

[0039] Figure 8 It is a structural schematic diagram of the electric vehicle body in example 2 (the power module is located in the seat);

[0040] Figure 9 It is an explosion diagram of the electric vehicle body in example 2 (the power module is located in the seat);

[0041] Figure 10 It is a structural schematic diagram of the electric vehicle body in example 3;

[0042] Figure 11 It is a structural schematic diagram of the cooling filter tank in example 3;

[0043] Figure 12Structure diagram of the electric vehicle body in Example 4;

[0044] Figure 13 Structure diagram of the electric vehicle body in Example 4;

[0045] Figure 14 Structure diagram of the electric vehicle body in Example 4;

[0046] Figure 15 Structure diagram of the electric vehicle body in Example 4;

[0047] Figure 16 Structure diagram of the electric vehicle body in Example 4;

[0048] Figure 17 Structure diagram of the electric vehicle body in Example 4.

[0049] 1-vehicle frame, 2-power module, 3-ignition device, 4-smoke conveying pipe, 5-cooling filter tank, 6-smoke treatment pipe, 11-seat, 12-foot pedal, 13-battery compartment, 21-box body, 22-battery module, 23-wiring terminal, 24-explosion venting part, 221-single battery, 222-battery management module, 31-outer shell, 32-fire blocking cover, 33-ignition assembly, 34-burning area, 311-top plate, 312-smoke passage, 313-first passage, 314-mixing passage, 315-oxygen mixing port, 331-ignition needle, 332-high-voltage package, 333-circuit board, 334-dry battery, 335-trigger, 51-smoke inlet, 52-smoke outlet, 53-one-way valve, 54-shunt pipe, 61-adsorption pipe, 62-diffusion plate, 63-adsorption filter unit, 64-baffle, 65-smoke exhaust pipe, 66-fire blocking cotton, 611-smoke exhaust port, 612-smoke exhaust passage, 613-annular baffle, 621-smoke hole, 622-fixing pipe, 631-first adsorption filter layer, 632-second adsorption filter layer, 633-third adsorption filter layer. DETAILED DESCRIPTION

[0050] In order to make the above objectives, characteristics and advantages of the present application more apparent, more understandable, the specific embodiments of the present application will be described in detail below with reference to the drawings. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor should belong to the protection scope of the present application.

[0051] The "other embodiments" appearing in various places in the description are not all referring to the same embodiment, nor are they mutually exclusive embodiments that are individually or alternatively selected from other embodiments. In the description of the present application, the terms "first", "second" are used only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. In the description of the present application, the meaning of "multiple" is two or more than two, unless otherwise specifically limited.

[0052] In the description of the present application, unless otherwise specifically defined and limited, the term "connection" should be understood broadly, for example, it can be fixed connection, or detachable connection, or integral connection; it can be directly connected, or indirectly connected through an intermediate part, or internal communication of two elements. For those skilled in the art, the specific meaning of the above-mentioned term in the present application can be understood according to the specific circumstances.

[0053] Meanwhile, in the description of the present application, it should be pointed out that the positions or positional relationships indicated by the terms "top, bottom, inside and outside" in the description are based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and are not intended to indicate or imply that the devices or elements referred to must have a specific position, be constructed and operated in a specific position, and therefore cannot be understood as a limitation on the present application.

[0054] The existing electric vehicle mainly consists of a frame, an electric drive device (motor), a power module, a charger and a control system. The above-mentioned electric vehicle mainly refers to electric bicycles, electric motorcycles and electric tricycles, etc. Among them, the power module is the main component of the electric vehicle, which mainly provides driving power for the electric vehicle. The existing electric vehicle is convenient for charging, and the power module can be detached from the frame of the electric vehicle. When charging the power module alone, it may be charged at a non-designated charging point (residential building, office building, etc.). When charging at a non-designated point, under the influence of overcharging, overheating and other factors, the battery separator of each single battery in the power module is prone to collapse and internal short circuit, thereby causing thermal runaway of the power module. After the power module occurs thermal runaway, a large amount of thermal runaway smoke will be generated, and combustion or explosion will also occur, causing extremely serious personal injury and huge property loss.

[0055] The utility model discloses a power module and the frame of electric vehicle are set to integral structure, that is to say, the power module is fixed on the frame of electric vehicle through the way of not detachable, the power module of electric vehicle is inseparable with the frame, when charging the power module, only the whole electric vehicle can be placed in the specified charging point and charges, when charging in the specified charging point, even if the power module generates thermal runaway, can reduce the probability of harm to personnel and the loss to property.

[0056] First, after the detachable installation of power module on the frame, the power module is inevitable and the frame of electric vehicle exists installation gap, and the power module is easy to produce jolt or swing when the electric vehicle rides on the uneven road surface, and there is thermal runaway risk, the utility model discloses the power module of not detachable installation on the frame, and the power module and the frame are integral structure, and the power module will not produce swing on the frame, avoids the performance problem of power module due to swing or vibration or the thermal runaway risk due to swing or vibration, and improves the safety of electric vehicle.

[0057] Second, the power module is not detachable and fixed on the frame of electric vehicle, guarantees the safety of power module and increases the anti-theft performance of power module.

[0058] Third, the power module is not detachable and fixed on the frame of electric vehicle, avoids that the user privately modifies power module (for example, adds battery or replaces battery, changes circuit board, removes overcharge prevention device and the like), and further increases the safety of electric vehicle.

[0059] Meanwhile, the utility model increases the thermal runaway smoke treatment device on electric vehicle, and the thermal runaway smoke treatment device handles the thermal runaway smoke generated when the power module generates thermal runaway, avoids that the thermal runaway smoke causes combustion or explosion after discharging, and improves the safety of electric vehicle.

[0060] Embodiment 1

[0061] As Figures 1 to 3As shown, this embodiment provides an electric vehicle body, which includes a frame 1 and a power module 2. The power module 2 mainly provides electrical energy to the electrical devices of the electric vehicle. At the same time, the power module 2 and the frame 1 are set as an integrated structure, that is, the power module 2 is fixed to the frame 1 of the electric vehicle by a non-detachable connection method. The above-mentioned non-detachable refers to fixing methods such as welding, bonding, and riveting. Unless part of the structure of the power module 2 or part of the structure of the frame 1 is destroyed by violent means during operations such as repair or recycling of the electric vehicle, the power module 2 can be separated from the frame 1 of the electric vehicle. The above-mentioned violent means refer to disassembly methods that can only be achieved by forging, sawing or oxygen cutting methods. During the normal use stage of the electric vehicle, the power module 2 cannot be removed from the frame 1 of the electric vehicle by non-violent means.

[0062] In this embodiment, the power module 2 of the electric vehicle is fixed to the frame 1 of the electric vehicle in a non-detachable manner. When charging the power module 2, the electric vehicle as a whole can only be placed at a designated charging and discharging location for charging, thereby avoiding the power module 2 being removed from the electric vehicle and charging at a non-designated location (such as a residential building, office building, etc.), thereby avoiding the huge losses to personnel and property caused by charging at a non-designated location.

[0063] like Figure 2 As shown, the power module 2 in this embodiment includes a housing 21 and a battery module 22. The battery module 22 is disposed within the housing 21, which is non-detachably fixed to the frame 1. To later repair or replace the power module 2, the housing 21 or the frame 1 must be destroyed to remove the power module 2 from the frame 1 of the electric vehicle.

[0064] The above-mentioned battery module 22 is the power supply body of the power module 2, which mainly includes a battery management module 222 and a plurality of single cells 221. The multiple single cells 221 are arranged in series to meet the different capacity requirements of the power module 2. The single cells 221 can be existing single cylindrical batteries, square shell batteries, and soft-pack batteries. The battery management module 222 (BMS) mainly monitors the working status of each single cell 221. The battery module 22 is electrically connected to the external circuit or electrical device through the terminal block 23. The terminal block 23 can be set on the box body 21 and exposed to the box body 21 to facilitate charging and discharging. During installation, the terminal block 23 can be fixedly connected to the box body 21 and cannot be disassembled from the box body 21, or it can be detachably connected to the box body 21.

[0065] The box 21 is a closed box, which mainly integrates and installs the battery module 22, and also protects the safety of the battery module 22. The shape and size of the box 21 can be designed as a shape convenient for placement according to the application scenario of the battery module 22, such as a cylinder, a prism, a cube, etc.

[0066] In actual use, for the convenience of installation and placement, the box 21 is generally a rectangular box structure, mainly including a shell and a cover plate. The shell is a rectangular shell structure with one end or both ends open. After the battery module 22 is arranged in the box 21, the cover plate is fixedly arranged at the open end of the shell and is sealed by welding or gluing. At the same time, the wiring terminal 23 of the battery module 22 penetrates the cable hole on the box 21 to realize electrical connection with external devices. If the box 21 is a metal box, insulation between the battery module 22 and the box 21 needs to be realized, for example, an epoxy plate is arranged between the box 21 and the battery module 22 for insulation, or an insulating film is wrapped outside the battery module. In addition, a positioning structure can be arranged in the box 21 to position and install the battery module 22. The box 21 can also be filled with a fire-retardant material, and the battery module 22 is wrapped in the fire-retardant material. The fire-retardant material not only prevents the spread of thermal runaway, but also further avoids combustion in the box 21.

[0067] After the power module 2 is assembled, the box 21 of the power module 2 is connected with the frame 1 of the electric vehicle in a non-detachable manner. The specific connection mode is as follows:

[0068] As shown in Figure 1 and Figure 2 If the box 21 is made of metal material, the box 21 and the frame 1 of the electric vehicle can be fixedly connected by welding, for example, the outer side wall of the box 21 and the support pipe of the electric vehicle pedal 12 and the support pipe of the electric vehicle seat bucket are welded.

[0069] As shown in Figure 3 If the box 21 is made of a plastic shell, the box 21 and the frame 1 of the electric vehicle can be fixedly connected by adhesion. For example, the power module 2 is placed in the space below the pedal 12 of the electric vehicle, and then glue is injected outside the power module 2 to fix the box 21 below the pedal 12 by adhesion. Or, the power module 2 is placed in the seat bucket of the electric vehicle, and then glue is injected into the gap between the seat bucket and the box 21 to fix the box 21 in the seat bucket by adhesion.

[0070] It should be noted that after the power module 2 is fixed on the vehicle frame 1 by the above glue injection method, the wiring terminal 23 of the power module 2 needs to pass through the glue layer to realize the electrical connection between the power module 2 and the outside. At the same time, the flue gas conveying pipe 4 connected with the power module 2 also needs to pass through the glue layer. The flue gas conveying pipe 4 is mainly used to connect the power module 2 and the thermal runaway flue gas device, and to convey the thermal runaway flue gas generated by the power module 2 to the thermal runaway flue gas device for processing.

[0071] As shown in Figure 2 , the explosion venting part 24 of the power module 2 in the embodiment is arranged on the box body 21, which includes an explosion venting opening arranged on the box body 21 and an explosion venting film or an explosion venting valve arranged on the explosion venting opening. When the power module 2 is normally used, the explosion venting part 24 seals the inner cavity of the box body 21. When the battery module 22 in the box body 21 occurs thermal runaway, the pressure in the box body 21 reaches a certain value, and the explosion venting part 24 is opened. The thermal runaway flue gas is discharged through the explosion venting opening, enters the thermal runaway flue gas processing device through the flue gas conveying pipe 4, and the thermal runaway flue gas processing device processes the thermal runaway flue gas.

[0072] As shown in Figure 1 and Figure 2 , the thermal runaway flue gas processing device in the embodiment includes an ignition device 3, which is installed on the vehicle frame 1 and connected with the power module 2 through the flue gas conveying pipe 4, and is used for controllable ignition processing of the thermal runaway flue gas to improve the safety of the electric vehicle.

[0073] As shown in Figures 4 to 7 , the ignition device 3 in the embodiment mainly includes an outer shell 31, a fireproof cover 32 and an ignition assembly 33. The fireproof cover 32 is connected to the outer shell 31 and forms a combustion zone 34 with the top plate 311 of the outer shell 31. The combustion zone 34 provides a combustion space for the combustion of the thermal runaway flue gas. The outer shell 31 is provided with a flue gas passage 312 in communication with the combustion zone 34. The flue gas passage 312 is at least one, which conveys the thermal runaway flue gas into the combustion zone 34. The ignition assembly 33 is used to ignite the thermal runaway flue gas in the combustion zone 34.

[0074] As shown in Figures 5 to 7 , the flue gas passage 312 in the embodiment is a plurality of flue gas passages 312, which are all in communication with the combustion zone 34 and are used to disperse the thermal runaway flue gas into the combustion zone 34. The plurality of flue gas passages 312 disperse the thermal runaway flue gas into the combustion zone 34, and the thermal runaway flue gas is dispersed and combusted in the combustion zone 34. Compared with a centralized single combustion point, the combustion flame of the dispersed combustion is relatively small, which can reduce the flame height when the thermal runaway flue gas is combusted, control the height of the thermal runaway flue gas combustion flame within a certain range, and improve the safety of the whole thermal runaway flue gas ignition.

[0075] As shown in Figure 4 andFigure 5 As shown, the outer shell 31 in this embodiment is a cylindrical structure with a top plate 311. The top plate 311 and the flame arrester 32 above the top plate 311 form a combustion zone 34. The outer shell 31 is provided with a plurality of flue gas channels 312. The plurality of flue gas channels 312 pass through in the longitudinal direction and communicate with the combustion zone 34 at the top of the outer shell 31. During specific processing, the number of flue gas channels 312 is 4 to 10, preferably 5 to 6. The plurality of flue gas channels 312 can be evenly distributed along the circumference of the outer shell 31, preferably arranged in a circular shape with the longitudinal axis of the outer shell 31 as the center. This arrangement allows the formation of multiple evenly dispersed combustion points when the thermal runaway flue gas is ignited, and the combustion flame height of each dispersed combustion point is relatively uniform.

[0076] like Figure 6 and Figure 7 As shown, to further reduce the flame height during combustion of thermal runaway flue gas, the thermal runaway flue gas can be mixed with oxygen before ignition. At the same time, after mixing with oxygen, the thermal runaway flue gas burns more fully. Specifically, the flue gas channel 312 may include a first channel 313 and a mixing channel 314 that are connected in sequence. The mixing channel 314 is connected to the combustion zone 34. At the same time, the mixing channel 314 is provided with an oxygen mixing port 315 that is connected to the external environment. The oxygen mixing port 315 transports external air into the mixing channel 314, where it is mixed with the thermal runaway flue gas input from the first channel 313 and then transported to the combustion zone 34.

[0077] During actual processing, since the size of the mixing channel 314 is larger than that of the first channel 313, a preferred solution in this embodiment is: the first channel 313 is formed by a through hole provided on the side wall of the outer shell 31; the side wall of the outer shell 31 is provided with a plurality of ridges extending along its length, and the mixing channel 314 is formed by a through hole provided on the ridges and extending longitudinally. This structure not only ensures the strength of the outer shell 31, but also, by providing the mixing channel 314 on the ridges, the number of oxygen mixing ports 315 can be increased.

[0078] like Figure 4 and Figure 5 As shown, in this embodiment, the ignition assembly 33 mainly includes a trigger 335 and an igniter; the igniter is used to ignite the thermal runaway flue gas in the combustion zone 34. The above-mentioned igniter can be implemented in different structures. For example, an existing arc igniter or a resistance wire igniter can be used. In this embodiment, an arc igniter can be used. The arc igniter can be powered by a dry cell 334 or an external circuit. The above-mentioned arc igniter specifically includes an ignition needle 331, a high-voltage package 332, and a circuit board 333. During specific installation, the ignition needle 331 is installed in the combustion zone 34, and the high-voltage package 332 and the circuit board 333 are integrated together and installed outside the combustion zone 34 to avoid damage to it by the combustion flame or heat of the thermal runaway flue gas. As shownFigure 1 As shown, the high-voltage package 332, circuit board 333 and dry battery 334 of the igniter can be integrated into a mounting frame, and then the mounting frame is fixed to the frame of the electric vehicle.

[0079] like Figure 4 As shown, the trigger 335 is used to activate the igniter when thermal runaway smoke passes through the outer shell 31 or the smoke duct 4. The trigger 335 can specifically be a sensor. When the power module 2 experiences thermal runaway smoke and generates thermal runaway smoke, the sensor monitors the flow rate, pressure, temperature, and gas composition of the thermal runaway smoke in real time. When the monitored data exceeds a threshold, a signal is sent to the igniter, thereby initiating ignition. The sensor in this embodiment can specifically be an airflow sensor, flow sensor, pressure sensor, or temperature sensor, and the airflow sensor can specifically be an e-cigarette microphone. When the trigger 335 is installed, the airflow sensor is placed at the bottom of the inner cavity of the outer shell 31 to directly receive the direct triggering of the thermal runaway smoke, ensuring that the igniter can be triggered promptly and reliably after the battery thermal runaway smoke. The flow sensor, pressure sensor, or temperature sensor can be installed on the smoke duct 4 to promptly activate the igniter when the thermal runaway smoke passes through the smoke duct 4.

[0080] like Figure 5 As shown, in this embodiment, the fire-blocking cover 32 forms a combustion zone 34 for the safe combustion of the thermal runaway flue gas. The fire-blocking cover 32 prevents the high temperature of the thermal runaway flue gas from burning and damaging the surrounding materials, and can also prevent rainwater from entering the ignition head. The fire-blocking cover 32 can be implemented by the following structure: the fire-blocking cover 32 includes a plurality of fire-blocking mesh covers that are nested in sequence, and each fire-blocking mesh cover is formed by weaving metal wire, specifically by weaving heat-insulating wire mesh; when the thermal runaway flue gas enters the combustion zone 34 and is ignited by the ignition component 33, a combustion flame will be generated. Under normal circumstances, the combustion flame has a high combustion temperature, and the longer the combustion flame is maintained, the higher the temperature is, and it is very easy to burn through a single-layer fire-blocking mesh cover. Therefore, two or more layers of fire-blocking mesh covers are designed, which can ensure that the combustion flame burns inside the fire-blocking mesh cover. The multi-layer fire-blocking mesh cover can effectively reduce the probability of the high-temperature flame burning through the mesh cover and the flame overflowing. In addition, the multi-layer fire-blocking mesh cover can also isolate the heat generated by the combustion of the thermal runaway flue gas, thereby improving the safety of the device when in use.

[0081] The fire arrester cover 32 can be installed directly onto the outer surface of the outer shell 31. In this case, the outer surface of the outer shell 31 is provided with an annular connecting boss with external threads. The inner wall of the fire arrester cover 32 has internal threads, and the fire arrester cover 32 and the annular connecting boss are connected by threads. Alternatively, a connecting plate can be provided at the bottom open end of the fire arrester cover 32, and the fire arrester cover 32 can be fixed to the top plate 311 of the outer shell 31 using the connecting plate and bolts.

[0082] Example 2

[0083] As shown in Figure 8 and Figure 9 The power module 2 in the embodiment is similar to that in Embodiment 1, and the difference between the two is that the power module 2 in the embodiment only includes a battery module 22. The battery module 22 includes a battery management module 222 and a plurality of single batteries 221, and the plurality of single batteries 221 are connected in series to meet the different capacity requirements of the power module 2. The single battery 221 can be an existing single cylindrical battery, square battery, or soft package battery. The battery management module 222 (BMS) mainly monitors the working state of each single battery 221. The battery module 22 is electrically connected to an external circuit or a power device through a wiring terminal 23.

[0084] As shown in Figure 9 The power module 2 in the embodiment is similar to that in Embodiment 1, and the difference between the two is that the power module 2 in the embodiment only includes a battery module 22. The battery module 22 includes a battery management module 222 and a plurality of single batteries 221, and the plurality of single batteries 221 are connected in series to meet the different capacity requirements of the power module 2. The single battery 221 can be an existing single cylindrical battery, square battery, or soft package battery. The battery management module 222 (BMS) mainly monitors the working state of each single battery 221. The battery module 22 is electrically connected to an external circuit or a power device through a wiring terminal 23.

[0085] The following describes an example in which the battery module 22 is installed in the seat bucket of the frame 1.

[0086] The seat bucket of the frame 1 in the embodiment includes a support seat and a cover arranged on the support seat. The support seat has a cavity, which is the battery compartment 12 for installing the battery module 22. The battery module 22 is arranged in the cavity of the support seat, and then the cover is sealed at the open end of the support seat by welding or gluing.

[0087] It should be noted that the seat bucket or the footboard 12 of the frame has a through hole through which the wiring terminal 23 is led out after the battery module 22 is assembled. The wiring terminal 23 realizes electrical connection between the battery module 22 and the outside after passing through the through hole. After the wiring terminal 23 passes through the through hole, the through hole needs to be sealed and insulated, for example, an insulating sleeve or an insulating pad is arranged. In addition, the seat bucket or the footboard 12 of the frame is also provided with an opening connected to the external environment, which serves as a venting port of the battery module 22. A venting membrane or a venting valve is arranged on the venting port as a venting part 24 of the power module 2.

[0088] When the battery module 22 in the battery compartment 13 experiences thermal runaway, the venting part is opened when the internal pressure reaches a certain value, and the thermal runaway smoke is discharged through the venting port, enters the thermal runaway smoke treatment device through the smoke conveying pipe 4, and the thermal runaway smoke treatment device treats the thermal runaway smoke.

[0089] In the embodiment, the part structure (the seat tub or the footboard 12) of the electric vehicle frame is used to install the power module 2 in the battery compartment 13, and the battery compartment 13 can also bear a certain pressure to ensure the safety of the battery module 22 installed in the frame 1. Therefore, the seat tub or the footboard 12 of the electric vehicle in the embodiment needs to be made of metal with high strength and rigidity, or made of plastic with high strength and rigidity. If made of metal, an insulating pad needs to be laid in the battery compartment 13 of the seat 11 or the footboard 12, or an insulating layer can also be wrapped outside the battery module 22 to avoid the risk of short circuit.

[0090] Embodiment 3

[0091] As shown in Figure 10 The embodiment is similar to the embodiment 1 or the embodiment 2, but the thermal runaway smoke treatment device in the embodiment includes the cooling filter tank 5 and the ignition device 3. The cooling filter tank 5 is used to cool and filter the thermal runaway smoke discharged from the power module 2, and the ignition device 3 is connected with the cooling filter tank 5 to ignite the thermal runaway smoke treated by the cooling filter tank 5, so as to avoid the safety hazard caused by the thermal runaway smoke after being discharged.

[0092] The cooling filter tank is used to cool the thermal runaway smoke before the thermal runaway smoke is ignited by the ignition device 3, so as to reduce the temperature of the thermal runaway smoke, and then avoid the damage of the high-temperature thermal runaway smoke to the parts in the ignition device 3. At the same time, the cooling filter tank filters the electrolyte and impurities carried in the thermal runaway smoke, so that the treated thermal runaway smoke is gaseous. When the gaseous thermal runaway smoke enters the ignition device 3 to burn, the flame is relatively stable, avoiding the defects such as flame spatter and unstable flame caused by the electrolyte and impurities in the thermal runaway smoke burning together. In addition, the thermal runaway smoke is discharged at a relatively stable flow rate after being cooled and filtered in the cooling filter tank, and the flame is relatively stable when the ignition device 3 is ignited, avoiding the safety hazard of sudden increase of the instantaneous pressure of the thermal runaway smoke, the thermal runaway smoke cannot be ignited in time or the flame suddenly becomes large, and improving the safety of the power module 2 in use.

[0093] The number of the above-mentioned cooling filter tanks 5 can be set according to the number of the single batteries 221 in the power module 2 and the demand, each of the cooling filter tanks 5 is provided with a flue gas inlet 51 and a flue gas outlet 52, if the cooling filter tanks 5 are multiple, the flue gas inlets 51 and the flue gas outlets 52 of adjacent cooling filter tanks 5 can be connected in series through pipelines, after the series connection, the flue gas inlet 51 of the first cooling filter tank 5 is connected with the explosion vent of the power module 2, and the flue gas outlet 52 of the last cooling filter tank 5 is connected with the ignition device 3. In actual use, considering the cost and installation space, generally the number of the cooling filter tanks 5 is one. When the flue gas inlet 51 and the flue gas outlet 52 of each of the above-mentioned cooling filter tanks 5 are specifically set, the flue gas inlet 51 is generally set at the bottom of the cooling filter tank 5, at this time, the thermal runaway flue gas can smoothly pass through the cooling liquid, and then the cooling liquid can fully treat the thermal runaway flue gas. The flue gas outlet 52 is generally set at the top of the cooling filter tank 5, at this time, the gas in the thermal runaway flue gas can be smoothly discharged from the cooling filter tank 5, at the same time, the thermal runaway flue gas is not easy to carry the liquid and impurities in the cooling filter tank 5 out of the cooling filter tank 5.

[0094] The shape of the cooling filter tank 5 in the embodiment is not limited, which can be a rectangular tank body, a circular tank body, an oval tank body, etc., and the circular tank body is preferably adopted, which has good pressure-bearing performance. Each of the cooling filter tanks 5 is filled with a cooling liquid, which is a liquid such as water, alkali solution, fluorinated liquid, etc. The cooling liquid cools and treats the thermal runaway flue gas discharged from the power module 2, at the same time, when the thermal runaway flue gas passes through the cooling liquid, the electrolyte and impurities carried in the thermal runaway flue gas are filtered and retained in the cooling liquid, which can effectively avoid the problems of flame splashing and flame overflowing caused by the simultaneous combustion of the electrolyte and impurities with the combustible gas. If the cooling liquid is an alkali solution, the alkali solution not only can play a role in removing the solid impurities and electrolyte in the thermal runaway flue gas, but also can adsorb and treat part of the thermal runaway flue gas, so that the subsequent ignition device 3 can fully treat the remaining thermal runaway flue gas.

[0095] As shown in Figure 10 When the cooling filter tank 5 in the embodiment is specifically connected, the flue gas inlet 51 and the flue gas outlet 52 of the cooling filter tank 5 are each provided with a one-way valve 53, the two one-way valves 53 avoid the cooling liquid in the cooling filter tank 5 flowing into the power module 2 and the ignition device 3, which can damage the power module 2 and the ignition device 3, at the same time, the two one-way valves 53 can seal the cooling liquid in the cooling filter tank 5, which avoids the volatilization of the cooling liquid. After the power module 2 is used for a long time, the cooling liquid in the cooling filter tank can continuously maintain a better treatment effect. In addition, the one-way valve 53 of the flue gas outlet 52 can ensure the flow direction of the thermal runaway flue gas, which avoids the backfire phenomenon.

[0096] As shown in Figure 11As shown, to further enhance the coolant's treatment effect on thermal runaway flue gas, a diverter pipe 54 is provided within the cooling filter tank 5 in this embodiment. The inlet of the diverter pipe 54 is connected to the flue gas inlet 51, and the outlet is immersed in the coolant. Multiple through-holes are provided on the sidewall of the diverter pipe 54, through which the thermal runaway flue gas is dispersed into the coolant. The diverter pipe 54 disperses and diverts the thermal runaway flue gas, allowing the diverted flue gas to fully contact the coolant in the cooling filter tank 5, thereby enhancing the treatment effect of the cooling filter tank 5 and providing more thorough treatment of the thermal runaway flue gas.

[0097] It should be noted that when the cooling filter tank 5 has a diversion pipe 54 , the smoke inlet 51 can be set on the top or side wall of the cooling filter tank 5 .

[0098] like Figure 10 As shown, the specific structure of the ignition device 3 is detailed in Example 1, and this embodiment will not be described in detail. During specific installation, the cooling filter tank 5 can be installed on the frame 1 of the electric vehicle through a bracket, and the ignition device 3 is fixed on one side of the rear wheel of the electric vehicle or fixed above the rear wheel. The cooling filter tank and the ignition device 3 are integrated into the electric vehicle. When the power module 2 of the electric vehicle thermal runaway occurs, thermal runaway flue gas is generated. The thermal runaway flue gas enters the cooling filter tank, and after being processed in the cooling filter tank, it enters the ignition device 3. The ignition device 3 can ignite the remaining thermal runaway flue gas in a safe and controllable manner to reduce the safety hazards caused by the thermal runaway of the power module 2.

[0099] Example 4

[0100] like Figure 12 As shown, this embodiment is similar to Example 1 or Example 2, except that the thermal runaway flue gas treatment device in this embodiment includes a flue gas treatment pipe 6, which is connected to the power module 2 through the flue gas conveying pipe 4, and is used to adsorb the thermal runaway flue gas to reduce the safety hazards caused by thermal runaway of the power module 2.

[0101] like Figure 13 As shown, one end of the flue gas conveying pipe 4 is connected to the explosion venting portion of the power module 2, and the other end is connected to the flue gas treatment pipe 6. When the battery module 22 in the power module 2 experiences thermal runaway, the thermal runaway flue gas generated by the thermal runaway is transported through the flue gas conveying pipe 4 to the flue gas treatment pipe 6. The flue gas treatment pipe 6 processes the thermal runaway flue gas generated by the power module 2 and discharges the treated gas, effectively avoiding the hidden dangers caused by the discharge of the thermal runaway flue gas.

[0102] The flue gas conveying pipe 4 is generally made of a high-temperature-resistant and corrosion-resistant pipe, and in actual use, the flue gas conveying pipe 4 is preferably a hose, which facilitates the connection of the power module 2 and the flue gas conveying pipe 4. In this embodiment, the flue gas conveying pipe 4 is a metal bellows pipe, which can be adjusted at will according to the structure of the vehicle frame 1 of the electric vehicle. At the same time, the flue gas conveying pipe 4 is a pipe with a certain length, which safely isolates the power module 2 from the discharged hot runaway flue gas, so that the discharged hot runaway flue gas does not affect the power module 2. Preferably, the length of the flue gas conveying pipe 4 is greater than 0.2 m. This arrangement increases the distance between the discharged hot runaway flue gas and the power module 2, thereby avoiding the influence of the discharged hot runaway flue gas on the power module 2.

[0103] The flue gas treatment pipe 6 in this embodiment is connected to the end of the flue gas conveying pipe 4, and is used to treat the hot runaway flue gas conveyed by the flue gas conveying pipe 4, so as to avoid the safety hazard caused by the discharged hot runaway flue gas, and also effectively reduce the pollution of the hot runaway flue gas to the environment. When the flue gas treatment pipe 6 is connected to the flue gas conveying pipe 4, an internal thread and an external thread can be respectively arranged on the end portions of the flue gas treatment pipe 6 and the flue gas conveying pipe 4, and the flue gas treatment pipe 6 and the flue gas conveying pipe 4 are connected through the threads. The threaded connection facilitates on-site installation and maintenance.

[0104] As shown in Figure 14 and Figure 15 , the flue gas treatment pipe 6 in this embodiment includes an adsorption pipe 61, a dispersion plate 62, and an adsorption and filtration unit 63. The adsorption pipe 61 and the dispersion plate 62 are mainly used to assemble the adsorption and filtration unit 63, and the adsorption and filtration unit 63 is used to treat the hot runaway flue gas step by step.

[0105] The adsorption pipe 61 is a sleeve structure with a certain length, and the cross-sectional shape of the sleeve is not required. The adsorption pipe 61 in this embodiment is a cylindrical structure, one end of which is open, and the other end is provided with a baffle 64. The open end is used to connect with the flue gas conveying pipe 4, and the baffle 64 is provided with a flue gas discharge port 611.

[0106] As shown in Figure 14 and Figure 15 , the dispersion plate 62 is arranged at the open end of the adsorption pipe 61 and forms a flue gas treatment cavity with the adsorption pipe 61. The dispersion plate 62 is a flat plate structure, and an end face thereof is provided with a plurality of flue gas holes 621 which are axially through and circumferentially uniformly distributed. In particular, the flue gas holes 621 are arranged at the position close to the outer periphery of the end face of the dispersion plate 62. The dispersion plate 62 reduces the speed of the hot runaway flue gas entering the flue gas treatment cavity, so that the hot runaway flue gas slowly enters the adsorption and filtration unit 63.

[0107] The adsorption filter unit 63 is arranged in the flue gas treatment cavity and includes N adsorption filter layers arranged in sequence, where N is an integer greater than or equal to 2, and the N adsorption filter layers can be arranged in sequence along the axial direction of the adsorption pipe 61 or can be nested in sequence from the outside to the inside along the radial direction of the adsorption pipe 61.

[0108] In this embodiment, the N adsorption filter layers are nested in sequence from the outside to the inside along the radial direction of the adsorption pipe 61, the first adsorption filter layer is arranged at the outermost side, the Nth adsorption filter layer is arranged at the innermost side, and the axial passage in the Nth adsorption filter layer is the flue gas discharge passage 612, which is in communication with the flue gas discharge port 611 on the baffle 64 of the adsorption pipe 61.

[0109] In this embodiment, the adsorption filter unit 63 includes three adsorption filter layers nested in sequence from the outside to the inside along the radial direction of the adsorption pipe 61, which are the first adsorption filter layer 631, the second adsorption filter layer 632, and the third adsorption filter layer 633 in sequence; the first adsorption filter layer 631, the second adsorption filter layer 632, and the third adsorption filter layer 633 are all annular adsorption filter layers, which have a certain length in the axial direction and form a structure similar to a ring sleeve, the first adsorption filter layer 631 is sleeved on the outside of the second adsorption filter layer 632, the second adsorption filter layer 632 is sleeved on the outside of the third adsorption filter layer 633, and the third adsorption filter layer 633 is provided with the flue gas discharge passage 612 for discharging the flue gas of thermal runaway. After the flue gas of thermal runaway passes through the flue gas holes 621 on the dispersion plate 62, it enters the first adsorption filter layer 631, is treated by the first adsorption filter layer 631, enters the second adsorption filter layer 632, and finally enters the third adsorption filter layer 633. After the flue gas of thermal runaway is treated step by step, the probability of combustion or explosion of the discharged gas is greatly reduced.

[0110] In this embodiment, the first adsorption filter layer 631 is activated carbon or molecular sieve, which is used to adsorb toxic and harmful gases in the flue gas of thermal runaway and part of the electrolyte. The second adsorption filter layer 632 is water-absorbing cotton or water-absorbing paper, which is mainly used to fully absorb the electrolyte in the flue gas of thermal runaway. The third adsorption filter layer 633 is a filter core, which can be a stainless steel filter core or a ceramic filter core. The filter core can fully filter out most of the fine particulate matter, ensuring that the discharged flue gas is relatively clean.

[0111] When the first adsorption filter layer 631, the second adsorption filter layer 632, and the third adsorption filter layer 633 are arranged in the flue gas treatment cavity, the filter core can be installed first, the water-absorbing cotton or water-absorbing paper can be sleeved on the filter core, and finally the activated carbon or molecular sieve can be filled.

[0112] In other embodiments, the first adsorption filter layer 631 can also be configured as a water-absorbing sponge or a water-absorbing paper for absorbing electrolyte, and the second adsorption filter layer 632 can be configured as activated carbon or a molecular sieve for adsorbing harmful gas. When the thermal runaway smoke is treated in this way, the thermal runaway smoke first passes through the water-absorbing sponge or the water-absorbing paper. Since the water-absorbing sponge or the water-absorbing paper has a relatively small thickness, it can not be able to fully adsorb the electrolyte. Therefore, the first adsorption filter layer 631 is configured as activated carbon or a molecular sieve, and the second adsorption filter layer 632 is configured as a water-absorbing sponge or a water-absorbing paper, which is relatively better.

[0113] As shown in Figure 12 and Figure 17 , on the basis of the above structure, the present embodiment is provided with a smoke exhaust pipe 65 on the baffle 64 of the adsorption pipe 61, and a fixing pipe 622 is provided on the end face of the dispersion plate 62 close to the smoke treatment cavity. The fixing pipe 622 and the smoke exhaust pipe 65 are coaxially installed. After the first adsorption filter layer 631, the second adsorption filter layer 632, and the third adsorption filter layer 633 are sequentially installed in the smoke treatment cavity, the smoke exhaust pipe 65 and the fixing pipe 622 are embedded into the smoke exhaust passage 612 of the third adsorption filter layer 633. At this time, the smoke exhaust pipe 65 and the fixing pipe 622 are used for positioning and fastening the N adsorption filter layers, so that the N adsorption filter layers are stably and reliably arranged in the smoke treatment cavity.

[0114] As shown in Figure 12 and Figure 16 , the adsorption pipe 61 close to the dispersion plate 62 is also provided with an annular retaining edge 613. The annular retaining edge 613 is used for fixing the dispersion plate 62, so that the dispersion plate 62 is integrated with the adsorption pipe 61, and the N adsorption filter layers are stably and reliably arranged in the smoke treatment cavity. Meanwhile, the annular retaining edge 613 can also be used for positioning and installing the first adsorption filter layer 631. In addition, a fire-retardant cotton 66 can also be provided on the side of the dispersion plate 62 close to the smoke conveying pipe 4. The fire-retardant cotton 66 can filter larger solid impurities in the thermal runaway smoke, and reduce the probability of the thermal runaway smoke blocking the dispersion plate 62.

[0115] Embodiment 5

[0116] The present embodiment provides an electric vehicle, which includes the electric vehicle body provided in the embodiments 1, 2, 3, or 4. The electric vehicle mainly refers to electric bicycles, electric motorcycles, electric tricycles, and the like. The electric vehicle mainly consists of a frame 1, an electric drive device (motor), a power module, a charger, a control system, and the like.

[0117] The electric vehicle is manufactured, the power module 2 is fixed on the frame 1 of the electric vehicle by welding or gluing and the like, the power module 2 cannot be disassembled subsequently, so as to avoid that the driver disassembles the power module 2 and takes it home for charging in the later period, so that even if the electric vehicle is in thermal runaway, the driver is away from the power module 2 at a certain distance, and the loss caused to the personnel and property is reduced. Meanwhile, the electric vehicle is provided with a thermal runaway smoke treatment device, the thermal runaway smoke after thermal runaway of the power module is treated, the loss caused by thermal runaway of the power module 2 is further reduced, and the safety of the electric vehicle is improved.

Claims

1. An electric vehicle body, characterized by, The electric vehicle body comprises a vehicle frame, a power module and a thermal runaway smoke treatment device. The power module and the vehicle frame are in an integrated structure. The thermal runaway smoke treatment device is used for treating thermal runaway smoke generated by the power module. The thermal runaway smoke treatment device comprises an ignition device arranged on the vehicle frame and a smoke conveying pipe, the ignition device is connected with the power module through the smoke conveying pipe, and the thermal runaway smoke generated by the power module is ignited and treated. Alternatively, The thermal runaway smoke treatment device comprises a smoke treatment pipe arranged on the vehicle frame and a smoke conveying pipe, the smoke treatment pipe is connected with the power module through the smoke conveying pipe, and is used for adsorbing and treating the thermal runaway smoke.

2. The electric vehicle body of claim 1, wherein, The power module comprises a box body and a battery module, the box body and the vehicle frame are in an integrated structure, the battery module is arranged in the box body, and the battery module and the box body are insulated, and the thermal runaway smoke treatment device is connected with an explosion vent on the box body.

3. The electric vehicle body of claim 1, wherein, The power module comprises a battery module, the vehicle frame has a closed battery compartment, the battery module is arranged in the battery compartment, and the battery module and the battery compartment are insulated, and the thermal runaway smoke treatment device is connected with an explosion vent on the battery compartment.

4. The electric vehicle body of claim 3, wherein, The battery compartment is a closed cavity formed in a foot pedal of the vehicle frame or a seat of the vehicle frame.

5. The electric vehicle body of any one of claims 1 to 4, wherein, The ignition device comprises an outer shell, an ignition assembly and a fireproof cover, the fireproof cover is connected to the outer shell and forms a combustion zone with a top plate of the outer shell, the outer shell is provided with a smoke passage in communication with the combustion zone, and the ignition assembly is used for igniting the thermal runaway smoke in the combustion zone.

6. The electric vehicle body of claim 5, wherein, The outer shell is provided with a plurality of smoke passages in communication with the combustion zone, which are used for dispersing and introducing the thermal runaway smoke into the combustion zone, the smoke passage comprises a mixing passage and a first passage in communication, the mixing passage is in communication with the combustion zone, and a mixed oxygen port in communication with the external environment is arranged on the mixing passage.

7. The electric vehicle body of claim 5, wherein, The thermal runaway smoke treatment device further comprises at least one cooling filter tank, a smoke inlet of the cooling filter tank is used for connecting with the power module, a smoke outlet is connected with the ignition device through the smoke conveying pipe, the cooling filter tank is provided with a cooling liquid for cooling and filtering the thermal runaway smoke, one-way valves are arranged at the smoke inlet and the smoke outlet of the cooling filter tank, and a shunt pipe is arranged in the cooling filter tank for shunting the thermal runaway smoke entering the cooling filter tank.

8. The electric vehicle body of any one of claims 1 to 4, wherein, The smoke treatment pipe comprises an adsorption pipe and an adsorption filter unit arranged in the adsorption pipe, the adsorption filter unit comprises N adsorption filter layers arranged in sequence.

9. An electric vehicle, characterized by The electric vehicle body comprises the vehicle frame, the power module and the thermal runaway smoke treatment device.

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