Box body, motor controller, electric assembly and vehicle

Abstract

The utility model relates to a box body, a motor controller, an electric assembly and a vehicle, the box body comprises a first shell, a ventilation valve and a cover body, and a containing cavity is formed in the first shell; the ventilation valve is arranged in the first shell in a penetrating mode, and the ventilation valve communicates with the containing cavity and the outer side of the first shell; the cover body is arranged in the containing cavity, the cover body is arranged on the ventilation valve in a covering mode, and the cover body comprises a ventilation material part used for ventilation. The cover body with the breathable material part is arranged on the breathable valve, so that high-temperature and high-pressure gas and flames are prevented from being sprayed out of the breathable valve when a fire breaks out in the box body while the air pressure inside and outside the box body is normally adjusted by the breathable valve, and the safety performance is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of electronic equipment, and in particular to a box, a motor controller, an electric assembly and a vehicle. BACKGROUND

[0002] In many sealed box-shaped mechanical or electronic devices, the use of a breather valve is very common. This is because the sealed box usually contains gas, and there may be a significant difference between the pressure of the gas in the box and the atmospheric pressure outside. If a breather valve is not installed to regulate this pressure difference, excessive pressure difference can damage the sealing of the box, thereby causing the sealing to fail. For mechanical devices, this can cause internal gears to rust, lubricating oil to deteriorate, etc.; for electronic equipment, it can cause internal circuit boards to be damp, corroded, or even short-circuited due to contact with moisture.

[0003] However, the existing breather valve design, although it can effectively solve the problem of pressure balance, is insufficient when faced with extreme situations, such as a short circuit occurring inside the box and causing a fire. In this case, high-temperature and high-pressure gas and flames can be ejected outward through the breather valve, not only intensifying the fire, but also causing secondary damage to the surrounding environment and posing a major safety risk. CONTENT OF THE INVENTION

[0004] The embodiments of the present application provide a box, a motor controller, an electric assembly and a vehicle, which improve safety performance to at least partially solve the above technical problems.

[0005] In order to achieve the above-mentioned purpose, according to the first aspect of the present application, a box is provided, comprising:

[0006] a first shell body formed with a containing cavity;

[0007] a breather valve penetratingly arranged in the first shell body, the breather valve being in communication with the containing cavity and an outside of the first shell body; and

[0008] a cover body arranged in the containing cavity, the cover body being arranged on the breather valve, and the cover body comprising a breather material part for breather.

[0009] Optionally, the cover body comprises:

[0010] a cover body provided with a mounting hole; and

[0011] a breather material part arranged in the mounting hole to form the breather material part.

[0012] Optionally, the cover body and the first shell body are integrally formed.

[0013] Optionally, the air-permeable material piece is arranged offset from the air-permeable valve.

[0014] Optionally, an inner wall of the mounting hole is provided with a bearing portion, and the air-permeable material piece is arranged on a side of the bearing portion facing away from the air-permeable valve.

[0015] Optionally, the box further comprises a pressing plate arranged on a side of the air-permeable material piece facing away from the bearing portion to limit the air-permeable material piece.

[0016] Optionally, the box further comprises a first shielding cover, and the first shielding cover and the first shell enclose a first shielding cavity, and the first shielding cover is integrally formed with the pressing plate.

[0017] Optionally, the pressing plate is provided with an air-permeable hole corresponding to a region of the air-permeable material piece.

[0018] Optionally, the air-permeable material portion is a fire-retardant material portion.

[0019] Optionally, the fire-retardant material portion comprises an aerogel portion.

[0020] According to a second aspect of the present application, an electric machine controller is provided, comprising the box according to any one of the above and electronic devices arranged in the accommodating cavity and outside the cover body.

[0021] Optionally, the box further comprises a second shielding cover and a shielding plate arranged separately, the second shielding cover and the first shell enclose a second shielding cavity, and at least part of a wall body of the second shielding cover is arranged in layers with the shielding plate.

[0022] The electric machine controller further comprises an OBC main circuit negative connection wire harness, an OBC main circuit positive connection wire harness, and an OBC control connection wire harness, the OBC control connection wire harness is arranged through the second shielding cover to be at least partially located in the second shielding cavity, and the OBC main circuit negative connection wire harness and the OBC main circuit positive connection wire harness are arranged on a side of the shielding plate facing away from the second shielding cover.

[0023] Optionally, a mounting groove is formed on a side of the shielding plate facing away from the second shielding cover, and the OBC main circuit negative connection wire harness and / or the OBC main circuit positive connection wire harness is arranged in the mounting groove.

[0024] Optionally, the first shell is provided with a first flow channel, a side of the first shell has a first port in communication with the first flow channel, a first abutment surface is arranged around the first port, and a second abutment surface is bent and connected to an outer periphery of the first abutment surface.

[0025] The electronic device includes a vehicle-mounted power supply module, the vehicle-mounted power supply module includes a second housing, the second housing is provided with a second flow channel, one side of the second housing is provided with a second port in communication with the second flow channel, a first matching surface arranged around the second port, and a second matching surface bently connected to the outer periphery of the first matching surface, the first matching surface is in sealing connection with the first abutting surface, and the second matching surface is in sealing connection with the first abutting surface, so that the second port and the first port are in communication.

[0026] Optionally, the motor controller further includes a first sealing ring and a second sealing ring.

[0027] The first sealing ring is arranged between the first abutting surface and the first matching surface, and the second sealing ring is arranged between the second abutting surface and the second matching surface.

[0028] According to a third aspect of the present application, an electric assembly is provided, including the box according to any one of the preceding box or the motor controller according to any one of the preceding motor controller.

[0029] According to a fourth aspect of the present application, a vehicle is provided, including the box according to any one of the preceding box or the motor controller according to any one of the preceding motor controller or the electric assembly according to the preceding electric assembly.

[0030] In the box of the embodiments of the present application, the cover with the air permeable material part is arranged on the air breather valve, so that the high-temperature and high-pressure gas and the flame in the case are inhibited from being sprayed out of the air breather valve when a fire breaks out in the case, while the air breather valve normally adjusts the air pressure in and out of the case, and the safety performance is improved.

[0031] Other features and advantages of the present application will be described in detail in the following specific embodiments. BRIEF DESCRIPTION OF DRAWINGS

[0032] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following will briefly introduce the drawings needed to be used in the embodiment description. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can also be obtained by those skilled in the art without any creative effort on the basis of these drawings.

[0033] In order to more completely understand the present application and its beneficial effects, the following will be described in conjunction with the drawings, wherein the same reference numerals in the following description represent the same parts.

[0034] Figure 1 is a cross-sectional structure diagram of the box provided in the exemplary embodiments of the present disclosure;

[0035] Figure 2 is Figure 1 is an enlarged schematic view of part A in

[0036] Figure 3 is a structural exploded view of the box in Figure 1

[0037] Figure 4 is a partial B enlarged view of Figure 3

[0038] Figure 5 is a structural view of the first shield in Figure 3

[0039] Figure 6 is a structural exploded view of the motor controller provided in the exemplary embodiment of the present disclosure;

[0040] Figure 7 is an assembly view of the motor controller in Figure 6

[0041] Figure 8 is a structural view of the shield plate in Figure 6

[0042] Figure 9 is a bottom view of the motor controller in Figure 6

[0043] Figure 10 is a sectional view at C-C in Figure 9

[0044] Figure 11 is a partial D enlarged view of Figure 10

[0045] Figure 12 is a structural perspective view of the electric assembly provided in the exemplary embodiment of the present disclosure.

[0046] Explanation of Reference Numerals:

[0047] ​​​​​​​​1000. Electric assembly; 100. Housing; 1. First housing; 101. Vent valve; 102. Cover; 1020. Vent material part; 1021. Cover body; 10211. Mounting hole; 10212. Support part; 1022. Vent material part; 104. Pressure plate; 1041. Vent hole; 2. External connector; 3. DC fast charging filter; 4. DC power distribution filter; 5. First boost connection copper busbar; 6. First shielding cover; 7. Controller top cover; 8. DC charging small cover; 9. DC bus small cover; 10. OBC circuit small fuse small cover; 11. Control component; 12. Shielding plate; 121. Mounting slot; 13. Second shielding cover; 14. AC filter component; 5. Second boost connection copper busbar; 16. Three-phase intelligent cut-off device; 17. Drive assembly; 18. Three-phase magnetic ring seat; 19. DC connector; 20. AC connector; 21. Three-phase side cover; 22. Bus capacitor filter assembly; 23. Water outlet pipe; 24. Vehicle power module; 25. Controller lower cover; 26. Water inlet pipe; 27. Vehicle power control circuit shielding cover; 28. Adapter board; 291. OBC main circuit negative terminal connection harness; 292. OBC main circuit positive terminal connection harness; 293. OBC control connection harness; 241. Second housing; 30. First sealing ring; 31. Second sealing ring; 201. Motor controller; 202. Motor; 203. Reducer. Detailed Implementation

[0048] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the protection scope of this application.

[0049] This application provides a housing; please refer to [link / reference]. Figure 1 and Figure 2 , Figures 1 to 4 This is a schematic diagram of the structure of the box provided in an embodiment of this application.

[0050] The housing 100 includes a first housing 1, a vent valve 101, and a cover 102.

[0051] The first housing 1 has a receiving cavity, which provides installation space for other components (such as the cover 102, electronic devices, etc.) and integrates the relevant components into a relatively independent space. This facilitates centralized management and protection of the components inside the housing 100.

[0052] The air permeable valve 101 is arranged in the first shell 1, and the air permeable valve 101 is connected with the accommodating cavity and the outside of the first shell 1. The air permeable valve 101 is arranged in the first shell 1 and connected with the accommodating cavity and the outside, so that the gas inside and outside the box body 100 can be exchanged, and the air pressure difference inside and outside the box body 100 can be effectively adjusted. When the air pressure inside the box body 100 is too high or too low, the air permeable valve 101 can flow the gas, maintain the air pressure inside the box body 100 in a proper range, avoid damage to the sealing structure of the box body 100 due to the large air pressure difference, and further protect the equipment inside the box body 100 from damage such as moisture and rust caused by sealing failure.

[0053] The cover body 102 is arranged in the accommodating cavity, the cover body 102 covers the air permeable valve 101, and the cover body 102 includes an air permeable material part 1020 for air permeation. The air permeable material part 1020 of the cover body 102 allows the gas to pass through. When the air pressure inside and outside the box body 100 changes, the air permeable valve 101 can still effectively adjust the air pressure through the air permeable material part 1020 to maintain the air pressure balance. When a fire occurs inside the box body 100, the cover body 102 can block the high-temperature and high-pressure gas and the flame from being directly sprayed out of the air permeable valve 101, slow down the spreading speed of the fire through the air permeable valve 101, reduce the risk of fire spreading, thereby protecting the surrounding environment and the safety of personnel and improving the safety performance.

[0054] In the technical solution of the present application, the cover body 102 with the air permeable material part 1020 is arranged on the air permeable valve 101, so that the high-temperature and high-pressure gas and the flame are inhibited from being sprayed out of the air permeable valve 101 when a fire occurs inside the box body 100, while the air permeable valve 101 normally adjusts the air pressure inside and outside the box body 100, thereby improving the safety performance.

[0055] The present application does not limit the specific structure of the cover body 102. The cover body 102 includes an air permeable material part 1020 for air permeation, which means that at least part of the wall of the cover body 102 is made of air permeable material. The wall of the cover body 102 can be entirely made of air permeable material, that is, the entire cover body 102 can be air permeable. Alternatively, part of the wall of the cover body 102 can be made of air permeable material, and the part of the wall made of air permeable material is the air permeable material part 1020, that is, the local part of the cover body 102 can be air permeable.

[0056] In some embodiments, the air permeable valve 101 is arranged in the first shell 1, and the air permeable valve 101 is connected with the accommodating cavity and the outside of the first shell 1. Figure 3 and Figure 4The cover body 102 comprises a cover main body 1021 and a piece of air-permeable material 1022. The cover main body 1021 is provided with a mounting hole 10211. The piece of air-permeable material 1022 is arranged in the mounting hole 10211 to form an air-permeable material portion 1020. In these embodiments, the cover body 102 is composed of two parts, i.e., the cover main body 1021 and the piece of air-permeable material 1022. The cover main body 1021 is provided with the mounting hole 10211, and the piece of air-permeable material 1022 is arranged in the mounting hole 10211 to form the air-permeable material portion 1020. This split structure design gives the cover body 102 more flexibility in manufacturing and assembly. Specifically, in the design and production process, the piece of air-permeable material 1022 can be selected according to different needs, thereby improving the flexibility of design and production. Moreover, the cover main body 1021 and the piece of air-permeable material 1022 can be produced and processed separately and then assembled together, which helps to improve production efficiency, simplify production process, and reduce production cost. In terms of maintenance, since the piece of air-permeable material 1022 can be installed and removed separately, when the piece of air-permeable material 1022 is damaged or needs to be replaced, only the piece of air-permeable material 1022 needs to be replaced, without replacing the entire cover body 102, thereby reducing the maintenance cost and complexity.

[0057] In some embodiments, the cover main body 1021 is integrally formed with the first shell 1. In these embodiments, the cover main body 1021 is integrally formed with the first shell 1, which brings many advantages. First, in terms of structure, the structural integrity and strength are greatly improved. Since it is integrally formed, there is no gap or weak connection between the cover main body 1021 and the first shell 1 that may be caused by assembly, which helps to improve the sealing performance of the structure and enables it to better withstand the internal and external pressure difference. Especially when facing the impact of high-temperature and high-pressure gas, the integrally formed structure can ensure the stability of the cover body 102 and effectively prevent the cover body 102 from being displaced or damaged, thereby greatly improving the protection performance. From the perspective of production and manufacturing, integrally forming helps to reduce the assembly steps in the manufacturing process. Reducing the assembly steps means that the production cost may be reduced in the production process, and the uncertainty factors that may be introduced by the assembly steps are reduced, thereby improving the reliability of the product.

[0058] In some embodiments, see Figure 2, the air permeable material piece 1022 is staggered with the air permeable valve 101, and in these embodiments, when the high-temperature and high-pressure gas enters the cover body 102 from the air permeable material piece 1022, due to the staggered arrangement of the air permeable material piece 1022 and the air permeable valve 101, the part of the cover body 1021 opposite to the air permeable material piece 1022 or the first shell 1 will block the direct impact of the airflow, so that the airflow will flow in the cover body 102 in a dispersed manner and needs to turn to flow out of the box body 100 from the air permeable valve 101. This tortuous airflow path helps to disperse the energy of the airflow, which can avoid the airflow from being concentrated through the air permeable valve 101 in a short time, thereby preventing the air permeable valve 101 from being locally overheated or having a pressure concentration. This reduces the risk of damage to the air permeable valve 101 or the air permeable valve 101 falling off the box body 100 due to local overheating or excessive pressure, better protects the air permeable valve 101, and further improves the safety performance.

[0059] In some embodiments, see Figure 4 , the inner wall of the mounting hole 10211 is provided with a bearing portion 10212, and the air permeable material piece 1022 is arranged on the side of the bearing portion 10212 away from the air permeable valve 101. In these embodiments, the bearing portion 10212 provides stable support for the air permeable material piece 1022, enhances the installation stability of the air permeable material piece 1022, prevents it from being displaced or falling off under the impact of high-temperature and high-pressure gas, and ensures the reliable performance of the air permeable material piece 1022 under extreme conditions.

[0060] In some embodiments, see Figure 2 , the box body 100 further comprises a pressing plate 104, which is arranged on the side of the air permeable material piece 1022 away from the bearing portion 10212 to limit the air permeable material piece 1022. In these embodiments, the air permeable material piece 1022 is arranged on the side of the bearing portion 10212 away from the air permeable valve 101, and the pressing plate 104 is arranged on the side of the air permeable material piece 1022 away from the bearing portion 10212, which is like a sandwich structure, the bearing portion 10212 provides support at the bottom, the air permeable material piece 1022 is in the middle, and the pressing plate 104 is limited at the top. The bearing portion 10212 and the pressing plate 104 jointly prevent the air permeable material piece 1022 from being displaced during operation, provide stable support and limitation for the air permeable material piece 1022, prevent it from being displaced or falling off under the impact of high-temperature and high-pressure gas, and further ensure the reliable performance of the air permeable material piece 1022 under extreme conditions.

[0061] In some embodiments, see Figure 3 and Figure 5The box body 100 further comprises a first shielding cover 6, the first shielding cover 6 and the first shell 1 enclose a first shielding cavity, and the first shielding cover 6 is integrally formed with the pressing plate 104. In these embodiments, the first shielding cover 6 can provide an additional electromagnetic shielding effect, reduce the influence of external electromagnetic interference on internal electronic devices, improve the electromagnetic compatibility of the system, and the integrally formed first shielding cover 6 with the pressing plate 104 simplifies the manufacturing and assembly process, reduces the number of parts and assembly steps, reduces production costs, and improves production efficiency. Specifically, when the box body 100 is the box body of the motor controller 201, the first shielding cover 6 is a DC loop shielding cover.

[0062] It can be understood that, in order to allow air flow to pass through the air-permeable material piece 1022, the pressing plate 104 can be made of air-permeable material, or the pressing plate 104 can be pressed against a part of the air-permeable material piece 1022.

[0063] In some embodiments, see Figure 5 The pressing plate 104 is provided with an air-permeable hole 1041 corresponding to the area of the air-permeable material piece 1022. In these embodiments, the pressing plate 104 is provided with an air-permeable hole 1041 corresponding to the area of the air-permeable material piece 1022, and the presence of the air-permeable hole 1041 ensures that air flow can pass through the pressing plate 104 and then pass through the air-permeable material piece 1022 more smoothly. Due to the presence of the air-permeable hole 1041, the pressing plate 104 can be more fully pressed against the air-permeable material piece 1022, and the pressing is more stable, which not only achieves the limiting function of the air-permeable material piece 1022 but also does not affect the air permeability of the air-permeable material piece 1022.

[0064] In some embodiments, the air-permeable material part 1020 is a fire-retardant material part. In these embodiments, the air-permeable material part 1020 is a fire-retardant material part, that is, the part of the wall of the cover 102 is made of a material that has air permeability and fire-retardant property. It can be understood that, since the air-permeable material part 1020 is air permeable, high-temperature and high-pressure gas and flames will impact the air-permeable material part 1020 more concentratedly. By setting the material of the air-permeable material part 1020 to have fire-retardant property, the air-permeable material part 1020 can play a fire-retardant role when it contacts the flame. It can prevent the flame from directly penetrating the air-permeable material part 1020 and avoid the flame entering the inside of the cover 102, thereby protecting the air breather 101 from direct damage by the flame. As a possible fire spread channel, the air-permeable material part 1020 is set to have fire-retardant property, which can inhibit the spread of the flame and prevent the fire from further spreading to other parts of the cover 102 or the surrounding environment through the air-permeable material part 1020, thereby improving the overall safety performance.

[0065] The specific material of the fire-retardant material part is not limited in the present application, and the material only needs to have air permeability and fire-retardant property. For example, the material of the fire-retardant material part can be fire-retardant polyester fiber, aramid fiber, fire-retardant nylon, fire-retardant polypropylene, etc.

[0066] In some embodiments, the fireproof material part comprises an aerogel part. In these embodiments, the fireproof material part comprises an aerogel part, i.e. the material of the fireproof material part is aerogel. Aerogel is a kind of solid material with a nano-porous network structure, and its pores are filled with gaseous dispersion medium. The heat insulation function of aerogel is due to the "infinite baffle effect". Aerogel has nano-sized pores, and the number of pore walls is infinite, which minimizes the heat transfer by radiation. When heat is conducted in aerogel, it needs to pass along a large number of nano-sized pore walls, greatly extending the heat conduction path and reducing the heat conduction efficiency. Moreover, heat conduction along the pore walls is hindered by the nearly infinite length of the nano-sized pore walls. At the same time, the gas permeability of aerogel is due to its nano-sized pores, which can meet the gas permeability requirement. When high-temperature and high-pressure gas permeates through the aerogel, i.e. through the internal nano-sized and nearly infinite long pore walls, the heat conduction has been minimized due to the above structure. Therefore, using aerogel to make the fireproof material part can effectively block and absorb high temperature and flame, reduce the direct impact on the air permeable valve 101, prevent high-temperature and high-pressure gas and flame from spewing out of the air permeable valve 101, and improve the overall safety performance.

[0067] According to a second aspect of the present application, an electric machine controller 201 is provided, comprising the above-mentioned box 100 and electronic devices, which are arranged in the accommodation cavity and outside the cover 102, i.e. the cover 102 is arranged between the electronic devices and the air permeable valve 101. When the electronic devices catch fire, the cover 102 plays a role of isolation, preventing high-temperature and high-pressure gas and flame from spewing out through the air permeable valve 101, reducing the fire, reducing the harm of heat radiation, flame impact, etc. to other surrounding equipment, avoiding triggering a chain reaction to cause more extensive damage, and improving the safety performance. Since the electric machine controller 201 adopts all the technical solutions of the above-mentioned embodiments, it at least has the beneficial effects brought by the technical solutions of the above-mentioned embodiments, which will not be repeated here. Specifically, the electric machine controller 201 further comprises an external plug-in connector 2, a direct current fast charging filter 3, a direct current power distribution filter 4, a first boost connection copper bar 5, a controller upper cover 7, a direct current charging small cover 8, a direct current bus small cover 9, an OBC circuit small fuse small cover 10, a control assembly 11, an AC filter assembly 14, a second boost connection copper bar 15, a three-phase intelligent cut-off device 16, a drive assembly 17, a three-phase magnetic ring seat 18, a DC connector 19, an AC connector 20, a three-phase side small cover 21, a bus capacitor filter assembly 22, a water outlet pipe 23, a controller lower cover 25, a water inlet pipe 26, a vehicle-mounted power supply control circuit shielding cover 27, a adapter plate 28, etc.

[0068] In some embodiments, see Figure 6 and Figure 7The box body 100 further comprises a second shielding cover 13 and a shielding plate 12, the second shielding cover 13 and the first shell 1 form a second shielding cavity, at least part of the wall of the second shielding cover 13 is arranged in layers with the shielding plate 12; the motor controller 201 further comprises an OBC main circuit negative connection wire harness 291, an OBC main circuit positive connection wire harness 292, and an OBC control connection wire harness 293, the OBC control connection wire harness 293 is arranged in the second shielding cover 13, so as to be at least partially located in the second shielding cavity, the OBC main circuit negative connection wire harness 291 and the OBC main circuit positive connection wire harness 292 are arranged on the side of the shielding plate 12 away from the second shielding cover 13. In these embodiments, a double-layer shielding structure is constructed by the second shielding cover 13 and the shielding plate 12, the second shielding cover 13 isolates the OBC control connection wire harness 293 in the second shielding cavity, forming a first layer of shielding, and the shielding plate 12 is arranged in layers with the second shielding cover 13, and the OBC main circuit negative connection wire harness 291 and the OBC main circuit positive connection wire harness 292 are installed on the side of the shielding plate 12 away from the second shielding cover 13, forming a second layer of shielding. This double-layer shielding structure is like two strong lines of defense, effectively isolating the OBC control connection wire harness 293 and the OBC main circuit positive and negative wire harnesses. Due to the joint action of the second shielding cover 13 and the shielding plate 12, high and low voltage signal crosstalk between the OBC control connection wire harness 293 and the OBC main circuit positive and negative wire harnesses is avoided, because the double-layer shielding structure blocks the possible interaction path between different types of signals, so that the high voltage signal (such as the signal in the OBC main circuit positive and negative wire harness) and the low voltage signal (such as the signal in the OBC control connection wire harness 293) are transmitted in independent spaces respectively, thereby ensuring the purity and stability of signal transmission, thereby achieving excellent electromagnetic compatibility (EMC) performance and improving the overall performance of the motor controller 201. Specifically, the second shielding cover 13 is an AC filter shielding cover, and an AC filter assembly is installed in the second shielding cavity.

[0069] In some embodiments, see Figure 8The side of the shielding plate 12 away from the second shielding cover 13 is formed with a mounting groove 121, and the OBC main circuit negative connection wire harness 291 and / or the OBC main circuit positive connection wire harness 292 is arranged in the mounting groove 121. In these embodiments, the mounting groove 121 can play a fixing role on the OBC main circuit negative connection wire harness 291 and / or the OBC main circuit positive connection wire harness 292. When the vehicle is in the process of driving and vibration occurs or other components inside the motor controller 201 move slightly, the mounting groove 121 can prevent the wire harness from being displaced, ensure the stability of the wire harness connection, and thus reduce the risk of circuit failure that may be caused by the loosening of the wire harness. Due to the orderly fixing of the wire harness by the mounting groove 121, the electromagnetic interference between the wire harnesses and between the wire harnesses and other components due to changes in distance or unstable positions is reduced, which helps to maintain the stability of the electromagnetic environment inside the motor controller 201 and improves the performance and reliability of the motor controller 201.

[0070] In some embodiments, see Figure 9 , Figure 10 and Figure 11 , the first shell 1 is provided with a first flow channel, one side of the first shell 1 has a first port a in communication with the first flow channel, a first abutment surface arranged around the first port a, and a second abutment surface bent and connected to the outer periphery of the first abutment surface; the electronic device includes a vehicle-mounted power supply module 24, and the vehicle-mounted power supply module 24 includes a second shell 241 provided with a second flow channel, one side of the second shell 241 has a second port b in communication with the second flow channel, a first mating surface arranged around the second port b, and a second mating surface bent and connected to the outer periphery of the first mating surface, the first mating surface is in sealed connection with the first abutment surface, and the second mating surface is in sealed connection with the first abutment surface, so that the second port b and the first port a are in communication. In these embodiments, the first mating surface is in sealed connection with the first abutment surface, the second mating surface is in sealed connection with the first abutment surface, and the first abutment surface and the second abutment surface are bent and connected, and the first mating surface and the second mating surface are bent and connected, which can provide more contact area and better geometric matching, which helps to form a more tightly sealed interface. This kind of sealing butt joint effectively prevents fluid leakage at the connection between the two flow channels (the first flow channel and the second flow channel), ensuring the safe operation of the motor controller 201 and the entire device.

[0071] In some embodiments, the motor controller 201 further includes a first sealing ring 30 and a second sealing ring 31; the first sealing ring 30 is disposed between the first abutting surface and the first mating surface, and the second sealing ring 31 is disposed between the second abutting surface and the second mating surface. In these embodiments, due to the bent connection, the first sealing ring 30 and the second sealing ring 31 not only form two seals, but also these two seals are in different directions. This structure makes the sealing effect better because the seals in different directions can prevent fluid leakage from multiple dimensions. The sealing rings (the first sealing ring 30 and the second sealing ring 31) can fill the microscopic gaps between the abutting surface and the mating surface (the first abutting surface and the first mating surface, and the second abutting surface and the second mating surface) to enhance the sealing performance, adapt to temperature changes, vibration and other operating conditions, and prevent seal aging, protect the sealing surface, reduce wear and corrosion, provide a stable sealing mechanism, reduce the risk of seal failure, ensure the normal operation of the internal fluid transmission system of the motor controller 201, and improve its reliability and service life.

[0072] According to the third aspect of this disclosure, see Figure 12 An electric power assembly 1000 is provided, which includes the aforementioned housing 100 or the aforementioned motor controller 201. Therefore, the electric power assembly 1000 has all the beneficial effects of the aforementioned housing 100 or motor controller 201, which will not be repeated here. Specifically, the electric power assembly 1000 also includes a motor 202 and a reducer 203.

[0073] According to a fourth aspect of this disclosure, a vehicle is provided that includes the aforementioned housing 100, the aforementioned motor controller 201, or the aforementioned electric assembly 1000, and the vehicle has all the beneficial effects of the aforementioned housing 100, motor controller 201, or electric assembly 1000, which will not be repeated here.

[0074] The vehicle may be a gasoline-powered vehicle, a plug-in hybrid electric vehicle, or a new energy vehicle, etc., and this disclosure does not make any specific restrictions.

[0075] In the description of this application, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more features. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0076] In the above embodiments, the descriptions of each embodiment have different focuses. For parts not described in detail in a certain embodiment, please refer to the relevant descriptions in other embodiments.

[0077] The embodiments, implementation manners and related technical features of the present application can be combined with each other without conflict.

[0078] The above is only a preferred embodiment of the present application, and does not limit the present application in any form. Any simple modification, equivalent change and modification made to the above embodiment according to the technical essence of the present application without departing from the technical solution content of the present application still falls within the scope of the technical solution of the present application.

Claims

1. A box, characterized in that, include: The first shell has a receiving cavity; A vent valve, passing through the first housing, connects the receiving cavity to the outside of the first housing; and, A cover is disposed within the receiving cavity, the cover covers the vent valve, and the cover includes a breathable material portion for ventilation.

2. The housing according to claim 1, characterized in that, The cover includes: The cover body is provided with mounting holes; and, A breathable material component is disposed in the mounting hole to form the breathable material section.

3. The housing according to claim 2, characterized in that, The cover body is integrally formed with the first shell.

4. The housing according to claim 2, characterized in that, The breathable material component is offset from the breathable valve.

5. The housing according to claim 2, characterized in that, The inner wall of the mounting hole is provided with a bearing portion, and the breathable material component is disposed on the side of the bearing portion opposite to the breathable valve.

6. The housing according to claim 5, characterized in that, The housing also includes a pressure plate, which is disposed on the side of the breathable material component away from the supporting part to limit the breathable material component.

7. The housing according to claim 6, characterized in that, The enclosure also includes a first shielding cover, which and the first shell together form a first shielding cavity, and the first shielding cover is integrally formed with the pressure plate.

8. The housing according to claim 6, characterized in that, The pressure plate has ventilation holes in the area corresponding to the breathable material component.

9. The housing according to claim 1, characterized in that, The breathable material section includes a flame-retardant material section.

10. The housing according to claim 9, characterized in that, The flame-retardant material portion includes an aerogel portion.

11. A motor controller, characterized in that, Includes the housing as described in any one of claims 1 to 10, and electronic devices, wherein the electronic devices are disposed within the receiving cavity and located outside the cover.

12. The motor controller according to claim 11, characterized in that, The enclosure also includes a second shield and a shield plate that are separately arranged. The second shield and the first shell form a second shield cavity. At least a portion of the wall of the second shield is stacked with the shield plate. The motor controller further includes an OBC main circuit negative connection harness, an OBC main circuit positive connection harness, and an OBC control connection harness. The OBC control connection harness passes through the second shielding cover so that it is at least partially located inside the second shielding cavity. The OBC main circuit negative connection harness and the OBC main circuit positive connection harness are arranged on the side of the shielding plate away from the second shielding cover.

13. The motor controller according to claim 12, characterized in that, The shielding plate has a mounting groove on the side opposite to the second shielding cover, and the OBC main circuit negative terminal connection harness and / or the OBC main circuit positive terminal connection harness are located in the mounting groove.

14. The motor controller according to claim 11, characterized in that, The first housing is provided with a first flow channel, and one side of the first housing has a first port communicating with the first flow channel, a first abutting surface circumferentially disposed around the first port, and a second abutting surface bent and connected to the outer periphery of the first abutting surface; The electronic device includes an on-board power module, which includes a second housing. The second housing has a second flow channel. One side of the second housing has a second port communicating with the second flow channel, a first mating surface surrounding the second port, and a second mating surface bent and connected to the outer periphery of the first mating surface. The first mating surface is sealed to the first abutting surface, and the second mating surface is sealed to the first abutting surface, so that the second port and the first port are connected.

15. The motor controller according to claim 14, characterized in that, The motor controller also includes a first sealing ring and a second sealing ring; The first sealing ring is disposed between the first abutting surface and the first mating surface, and the second sealing ring is disposed between the second abutting surface and the second mating surface.

16. An electric powertrain, characterized in that, It includes the housing as described in any one of claims 1 to 10 or the motor controller as described in any one of claims 11 to 15.

17. A vehicle, characterized in that, It includes the housing as described in any one of claims 1 to 10, the motor controller as described in any one of claims 11 to 15, or the electric assembly as described in claim 16.

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