Shielding structure, power system and vehicle

Abstract

The present invention provides a shielding structure, a power system and a vehicle. The shielding structure is applied to the power system of the vehicle. The power system includes a motor, an inverter and an electrical connection line. The motor is provided with a connection terminal connected to the electrical connection line, and the other end of the electrical connection line is connected to the inverter. The shielding structure includes a first shielding portion and a second shielding portion, and both the first shielding portion and the second shielding portion are magnetic isolation members; the first shielding portion is provided with a first accommodating cavity having an opening for covering the outside of the connection terminal of the motor, and the first shielding portion further has a wiring hole communicating with the inside and outside of the first accommodating cavity for the electrical connection line to pass through; the second shielding portion is connected to the first shielding portion, and the second shielding portion extends along the extending direction of the electrical connection line and is arranged on the outer side of the circumference of the electrical connection line. The present invention can reduce the electromagnetic radiation received by the users inside the vehicle.

Description

Technical Field

[0001] The present invention relates to the technical field of electromagnetic shielding, and in particular to a shielding structure, a power system, and a vehicle. Background Art

[0002] Electromagnetic Compatibility (EMC) refers to the ability of a device or system to operate in its electromagnetic environment and meet requirements without generating intolerable electromagnetic interference to any device in its environment. The purpose of evaluating Electromagnetic fields (EMF) is to protect the central nervous system tissues of the human head and torso exposed to electromagnetic fields and reduce the adverse effects on the human body. EMC values and EMF values are important test parameters for vehicles.

[0003] Taking new energy vehicles as an example, a battery, an inverter, and a motor are provided on a new energy vehicle. The two ends of the inverter are respectively connected to the battery and the motor. In this way, the direct current of the battery can be converted into alternating current to drive the motor to operate and drive the vehicle forward. Among them, a junction box and a junction box cover are provided on the motor. An outlet hole is provided on the side wall of the junction box. The electrical connection line between the motor and the inverter passes through the junction box via the outlet hole and is connected to the motor terminal. The junction box cover is arranged on the top of the junction box to facilitate the installation and disassembly of the electrical connection line.

[0004] When the vehicle is in the starting state, electromagnetic waves are generated at the electrical connection line and the connection position between the electrical connection line and the motor, and radiate to the outside of the junction box through the outlet hole, that is, electromagnetic leakage occurs, resulting in the electrical components of the vehicle and the users inside the vehicle being exposed to electromagnetic radiation. Summary of the Invention

[0005] In view of the above problems, embodiments of the present invention provide a shielding structure, a power system, and a vehicle, which can reduce the electromagnetic radiation received by users inside the vehicle.

[0006] To achieve the above object, the embodiments of the present invention provide the following technical solutions:

[0007] A first aspect of an embodiment of the present invention provides a shielding structure. The shielding structure is applied to the power system of a vehicle. The power system includes a motor, an inverter, and an electrical connection line. The motor is provided with a connection terminal connected to the electrical connection line, and the other end of the electrical connection line is connected to the inverter.

[0008] The shielding structure includes a first shielding portion and a second shielding portion, both the first shielding portion and the second shielding portion being magnetic isolation members; the first shielding portion is provided with a first accommodating cavity having an opening for covering the outside of the wiring terminal of the motor, and the first shielding portion further has a wiring hole communicating with the inside and outside of the first accommodating cavity for the electrical connection line to pass through; the second shielding portion is connected to the first shielding portion, and the second shielding portion extends along the extending direction of the electrical connection line and is disposed on the outer side of the circumference of the electrical connection line.

[0009] In some embodiments, the second shielding portion is provided with an opening facing the ground.

[0010] In some embodiments, the opening penetrates through both ends of the second shielding portion along the extending direction of the electrical connection line.

[0011] In some embodiments, the second shielding portion includes a first shielding segment and a second shielding segment, the first shielding segment protruding from the outer wall surface of the first shielding portion, the second shielding segment being detachably connected to the first shielding segment and extending along the extending direction of the electrical connection line; wherein, the first shielding segment and the second shielding segment partially overlap to overlap each other.

[0012] In some embodiments, the shielding structure further includes a clamping assembly, the clamping assembly including a first clamping member and a second clamping member, the first clamping member and the second clamping member being respectively located on both sides of the second shielding segment, the first clamping member and the second clamping member being connected to fix the electrical connection line on the second shielding segment, and the clamping assembly being capable of being clamped and fixed at different positions on the second shielding segment.

[0013] In some embodiments, the first clamping member is disposed opposite to the electrical connection line, and three limiting grooves are arranged in parallel on the first clamping member, the limiting grooves being used for clamping and fixing the electrical connection line, and the distance between two adjacent limiting grooves being the same.

[0014] In some embodiments, the clamping assembly is detachably connected to the first shielding segment.

[0015] In some embodiments, the shielding structure further includes a third shielding portion, the third shielding portion being connected to the second shielding portion; the third shielding portion is provided with a second accommodating cavity having an opening for covering the outside of the wiring terminal of the inverter.

[0016] A second aspect of an embodiment of the present invention provides a power system, which includes a motor, an inverter, an electrical connection line, and the shielding structure described in the first aspect above; the motor is provided with a terminal connected to the electrical connection line, the other end of the electrical connection line is connected to the inverter, and the shielding structure is respectively connected to the motor and the electrical connection line.

[0017] A second aspect of an embodiment of the present invention provides a vehicle, which includes the power system described in the second aspect above.

[0018] Compared with the prior art, the shielding structure, the power system, and the vehicle provided by the embodiments of the present invention have the following advantages:

[0019] The shielding structure has two connected parts, namely a first shielding part and a second shielding part. The first shielding part is connected to the motor and is used to cover the outside of the terminal of the motor, and the second shielding part covers the outside of the electrical connection line. In this way, the electromagnetic waves leaked at the outlet hole of the motor junction box and the cover plate of the motor junction box can be prevented from radiating towards the user side, that is, the electromagnetic radiation received by the electrical components in the vehicle and the users in the vehicle can be reduced, the safety of the electrical components in the vehicle and the users in the vehicle is relatively high, and the vehicle meets the EMC and EMF protection requirements.

[0020] In addition to the technical problems solved by the embodiments of the present invention described above, the technical features constituting the technical solutions, and the beneficial effects brought by these technical features of the technical solutions, the other technical problems that can be solved by the shielding structure, the power system, and the vehicle provided by the embodiments of the present invention, the other technical features included in the technical solutions, and the beneficial effects brought by these technical features will be further described in detail in the specific implementation manner. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the drawings in the following description are some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0022] Figure 1 It is a schematic structural diagram of the shielding structure provided by an embodiment of the present invention;

[0023] Figure 2 is Figure 1 an exploded view of the shielding structure in

[0024] Figure 3 is Figure 1 another schematic structural diagram of the shielding structure in

[0025] Figure 4 is Figure 3 the explosion schematic diagram of the shielding structure in

[0026] Figure 5 is Figures 1 to 4 the structural schematic diagram of the second shielding section in

[0027] Reference numerals:

[0028] 10: The first shielding part;

[0029] 20: The second shielding part;

[0030] 21: The first shielding section;

[0031] 211: The routing hole;

[0032] 22: The second shielding section;

[0033] 30: The clamping assembly;

[0034] 31: The first clamping member;

[0035] 311: The limiting groove;

[0036] 32: The second clamping member;

[0037] 40: The junction box cover plate. Detailed implementation manners

[0038] In order to make the above objects, features, and advantages of the embodiments of the present invention more obvious and understandable, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without making creative efforts shall fall within the protection scope of the present invention.

[0039] In the prior art, a junction box and a junction box cover plate are provided on a motor. The junction box cover plate covers the top of the junction box of the motor. An outlet hole is formed in the side wall of the junction box, and an electrical connection line extends out through the outlet hole and is connected to an inverter. The inverter is connected to the vehicle's battery through the electrical connection line. The inverter can convert the direct current of the battery into alternating current to drive the vehicle forward by driving the motor. However, when the vehicle is running, electromagnetic waves are generated at both the electrical connection line and the position where the electrical connection line is connected to the motor. The electromagnetic waves will radiate to the outside of the junction box through the outlet hole and the motor junction box cover, resulting in the vehicle's electrical components and the users inside the vehicle being exposed to electromagnetic radiation. Among them, the electromagnetic radiation will interfere with the sensitivity of the electrical components and even cause the electrical components to fail, endangering the normal driving of the vehicle. When the human body is exposed to an electromagnetic radiation environment, it will produce relatively serious neurasthenia syndromes, such as headache, vomiting, dizziness, fatigue, memory loss, and potential biological damage.

[0040] In view of this, an embodiment of the present application provides a shielding structure. The shielding structure includes a first shielding portion and a second shielding portion connected to each other. The first shielding portion covers the outside of the motor wiring terminal, and the second shielding portion is disposed outside the electrical connection line. In this way, the intensity of the electromagnetic waves radiating towards the inside of the vehicle can be reduced, that is, protection can be provided for the electrical components and users inside the vehicle.

[0041] Please refer to Figures 1 to 5 , this embodiment provides a shielding structure. The shielding structure is applied to the power system (not shown) of a vehicle. The power system includes a motor, an inverter, and an electrical connection line. The motor is provided with a wiring terminal connected to the electrical connection line, and the other end of the electrical connection line is connected to the inverter.

[0042] Among them, the power system further includes a battery, and the battery can be a ternary lithium battery, a lithium manganese oxide battery, a lithium iron phosphate battery, etc. The battery is used to provide electrical energy. The battery is connected to the inverter, and the inverter is used to convert the direct current of the battery into alternating current and deliver it to the motor. A transmission mechanism is provided between the motor and the vehicle body. When the motor runs, it can drive the vehicle body forward through the transmission mechanism.

[0043] The shielding structure includes a first shielding portion 10 and a second shielding portion 20, and both the first shielding portion 10 and the second shielding portion 20 are magnetic isolation members. The magnetic isolation member is formed by stamping a magnetic material, and its material can be iron, nickel, iron-nickel alloy, etc.

[0044] The first shielding portion 10 is provided with a first accommodating cavity having an opening for covering the outside of the junction box cover plate 40 of the motor. The electrical connection line passes through the junction box and extends to the outside of the junction box. The first shielding portion 10 further has a wiring hole 211, and the wiring hole 211 communicates with both the inside and the outside of the first accommodating cavity for the electrical connection line to pass through.

[0045] That is, the first shielding part 10 is openly arranged and constitutes the junction box cover 40 of the motor, and the first shielding part 10 can be arranged to cover the terminal of the electrical connection line and the outside of part of the electrical connection line. The shape of the first shielding part 10 can be set according to the size and shape of the terminal. That is to say, compared with the junction box cover 40 in the prior art, the size of the first shielding part 10 in this embodiment is not significantly increased, and the shielding effect of the first shielding part 10 is better and the reliability is higher.

[0046] In some embodiments, in order to stabilize and fix the shielding structure, the first shielding portion 10 can be fixedly connected to the housing of the motor. For example, the first shielding portion 10 is connected to the motor through a threaded fastener; or, the junction box cover 40 is connected to the motor, and the first shielding portion 10 is connected to the junction box cover 40 through a threaded fastener (such as Figures 1 to 4 shown).

[0047] There may be an assembly gap between the edge of the opening of the first shielding part 10 and the outer wall of the motor. In some embodiments, an electromagnetic sealing gasket well known to those skilled in the art may be provided between the edge of the opening of the first shielding part 10 and the outer wall of the motor to prevent electromagnetic wave leakage.

[0048] The second shielding part 20 is connected to the first shielding part 10 , extends along the extension direction of the electrical connection line, and is arranged outside the circumference of the electrical connection line. Exemplarily, the second shielding part 20 is tubular, and the electrical connection line is passed through the inside of the second shielding part 20 .

[0049] The second shielding part 20 and the first shielding part 10 may be integrally formed. In some embodiments, the second shielding part 20 and the first shielding part 10 may be detachably connected, for example, the first shielding part 10 and the second shielding part 20 are connected by threaded fasteners.

[0050] The second shielding portion 20 extends along the extending direction of the electrical connection line. That is, the second shielding portion 20 is not limited to extending along a straight line, and can extend in a meandering manner according to the arrangement of the electrical connection line.

[0051] In this way, the electromagnetic waves generated by the electrical connection wires and the locations where the electrical connection wires are connected to the motor can be shielded in the cavity surrounded by the shielding structure. In other words, the radiation intensity of electromagnetic waves received by the electrical components in the vehicle located on the upper side of the motor and the users inside the vehicle is reduced, the shielding structure can provide protection for the electrical components in the vehicle and the users, the safety of the users is high, and the vehicle meets the EMC and EMF protection requirements.

[0052] In some embodiments, to reduce the manufacturing cost, an opening is provided on the second shielding portion 20, and the opening faces the ground. In this way, although some electromagnetic waves will radiate towards the ground side through the opening, some electrical components and users located above the electrical connection line and the motor are still not radiated by the electromagnetic waves, and the safety of the users is relatively high.

[0053] At the same time, the coverage area of the second shielding portion 20 becomes smaller, and the manufacturing cost of the second shielding portion 20 is relatively low. Part of the electrical connection line can also be exposed through the opening, and the user can observe or repair the electrical connection line through the opening, which is easy to operate.

[0054] The number of openings can be multiple, and the multiple openings are arranged at intervals. In some embodiments, the extension length of the opening is less than or equal to the extension length of the second shielding portion 20 along the extension direction of the electrical connection line.

[0055] When the extension length of the opening is equal to the extension length of the second shielding portion 20, in some embodiments, the opening penetrates through both ends of the second shielding portion 20 along the extension direction of the electrical connection line.

[0056] That is to say, the cross-sectional shape of the second shielding portion 20 is a groove-like structure similar to a U shape, the electrical connection line is accommodated inside the second shielding portion 20, and the structure of the second shielding portion 20 is relatively simple. At this time, the electrical connection lines located in the second shielding portion 20 can all be exposed at the opening position, which is convenient for fixing, repairing, etc. of the electrical connection lines.

[0057] In some embodiments, to simplify the shielding structure, the second shielding portion 20 can also be a plate-like structure, and the second shielding portion 20 is located above the electrical connection line.

[0058] Considering that the length of the electrical connection line is relatively large and the electrical connection line is usually meanderingly distributed, the shielding structure can be a split structure, for example, the first shielding portion 10 and the second shielding portion 20 are detachably connected.

[0059] In some embodiments, the second shielding portion 20 can be a multi-segment structure, for example, the number of segments of the second shielding portion 20 is two, three or more, so as to easily assemble the second shielding portion 20 according to the extension direction of the electrical connection line.

[0060] Taking the number of segments of the second shielding portion 20 being two as an example, the second shielding portion 20 includes a first shielding segment 21 and a second shielding segment 22. Among them, the first shielding segment 21 protrudes from the outer wall surface of the first shielding portion 10. The first shielding segment 21 and the first shielding portion 10 can be detachably connected. For example, the first shielding segment 21 and the first shielding portion 10 are connected by a threaded fastener. At this time, the first shielding segment 21 and the first shielding portion 10 can partially overlap to prevent electromagnetic waves from radiating towards the user side.

[0061] In some embodiments, the first shielding section 21 and the first shielding part 10 can also be integrally formed. In this way, not only can the shielding structure be simplified, but also electromagnetic leakage towards the user side at the connection position between the first shielding section 21 and the first shielding part 10 can be avoided.

[0062] The second shielding section 22 is detachably connected to the first shielding section 21, and the second shielding section 22 extends along the extension direction of the electrical connection line. The first shielding section 21 and the second shielding section 22 can be connected by snap connection or connected by threaded fasteners, and the connection stability between the first shielding section 21 and the second shielding section 22 is relatively high.

[0063] Wherein, there can be a gap between the first shielding section 21 and the second shielding section 22, and an electromagnetic sealing gasket is filled in the gap between the first shielding section 21 and the second shielding section 22 to avoid electromagnetic wave radiation towards the user side.

[0064] In some embodiments, to simplify the shielding structure and reduce the manufacturing cost, the first shielding section 21 and the second shielding section 22 can partially overlap so that the first shielding section 21 and the second shielding section 22 overlap each other. In this way, there is no mating gap between the first shielding section 21 and the second shielding section 22, and electromagnetic wave radiation towards the user side is avoided, and the safety of the user is relatively high.

[0065] Wherein, the extension length of the overlapping part between the first shielding section 21 and the second shielding section 22 can be set as required.

[0066] In some embodiments, according to the types of power systems applicable to the shielding structure, the electrical connection line can have different extension directions. Then, the second shielding section 22 can be used as a standard part according to the types of power systems and vehicles. In this way, when the types of power systems and vehicles are determined, the corresponding second shielding section 22 can be selected.

[0067] At this time, the first shielding section 21 is used as the connection part, and the extension length of the first shielding section 21 can be less than the extension length of the second shielding section 22.

[0068] In some embodiments, the shielding structure further includes a clamping assembly 30 for fixing the electrical connection line on the second shielding section 22.

[0069] Wherein, the clamping assembly 30 includes a first clamping member 31 and a second clamping member 32. The first clamping member 31 and the second clamping member 32 are respectively located on both sides of the second shielding section 22, and the first clamping member 31 and the second clamping member 32 are connected. In this way, the electrical connection line and the second shielding section 22 can be clamped and fixed between the first clamping member 31 and the second clamping member 32.

[0070] In some embodiments, the first clamping member 31 and the second clamping member 32 may both be connected to the second shielding section 22, and the electrical connection wire is clamped or released through the relative movement between the first clamping member 31 and the second clamping member 32. For example, the second clamping member 32 is fixedly connected to the second shielding section 22, and the first clamping member 31 is an elastic member and is connected to the second clamping member 32.

[0071] In some embodiments, the first clamping member 31 and the second clamping member 32 may also be independent of the second shielding section 22. At this time, the first clamping member 31 and the second clamping member 32 may be fixedly connected by a threaded fastener. Specifically, both ends of the first clamping member 31 and the second clamping member 32 have bolt holes, and both ends of the first clamping member 31 and the second clamping member 32 are fixedly connected by a threaded fastener. In this way, the clamping assembly 30 is detachably connected to the second shielding section 22 to clamp and fix the clamping assembly 30 at different positions of the second shielding section 22 as needed.

[0072] In some embodiments, the number of the clamping assemblies 30 may be multiple, and the multiple clamping assemblies 30 are arranged at intervals along the extending direction of the second shielding section 22. In this way, the electrical connection wire can be fixed at multiple points, and the stability of the electrical connection wire is relatively high.

[0073] In some embodiments, taking the first clamping member 31 being arranged opposite to the electrical connection wire and the second clamping member 32 being arranged on the other side of the second shielding section 22 as an example. The second clamping member 32 is attached to the outer wall surface of the second shielding section 22, and the first shielding section 21 is attached to the outer wall surface of the electrical connection wire, so that the electrical connection wire and the second shielding section 22 can be pressed against each other.

[0074] In some embodiments, the number of the electrical connection wires is three. Correspondingly, three limiting grooves 311 are arranged in parallel on the first clamping member 31, and the limiting grooves 311 are used for clamping and fixing the electrical connection wire, and the distance between two adjacent limiting grooves 311 is the same.

[0075] Among them, when the distances between the three-phase electrical connection wires from the output of the inverter to the input of the motor terminal are the same, the physical distances that the three-phase currents flow through are the same, so that the phase difference between the three-phase currents is 120°, avoiding the generation of electromagnetic radiation due to three-phase imbalance. In this embodiment, by providing three limiting grooves 311 arranged in parallel, it is possible to avoid the situation of generating electromagnetic radiation due to different bending paths of the three-phase electrical connection wires at the bending positions (such as Figures 1 to 4 the bending of the second shielding section 22) in the figure.

[0076] The distance between two adjacent limiting grooves 311 can be limited according to the insulation grade of the electrical connection wire, etc.

[0077] In some embodiments, when there are multiple clamping assemblies 30, the multiple clamping assemblies 30 are arranged at intervals. In this way, equal intervals can be set at different positions along the length direction of the electrical connection line.

[0078] Wherein, the first shielding section 21 and the second shielding section 22 are detachably connected, and the clamping assembly 30 and the second shielding section 22 are detachably connected.

[0079] In some embodiments, to simplify the shielding structure, the clamping assembly 30 is detachably connected to the first shielding section 21. That is to say, after the clamping assembly 30 and the second shielding section 22 are clamped and fixed, the clamping assembly 30 and the second shielding section 22 form an integral body, and this integral body is detachably connected to the first shielding section 21 through the clamping assembly 30. In this way, the structures of the first shielding section 21 and the second shielding section 22 are relatively simple.

[0080] In some embodiments, the first clamping member 31 is provided with a plurality of bolt holes, the plurality of bolt holes are arranged at intervals along the extending direction of the electrical connection line, and one of the plurality of bolt holes is used to connect with the second clamping member 32.

[0081] Correspondingly, bolt holes are also provided on the first shielding section 21, and the first shielding section 21 and the first clamping member 31 can be fixedly connected through threaded fasteners. In this way, the first shielding section 21 and the first shielding part 10 are integrally formed, the first shielding section 21 and the first clamping member 31 are fixedly connected, and the first clamping member 31 and the second clamping member 32 clamp and fix the second shielding section 22 and the electrical connection line, and the shielding structure is relatively simple and easy to disassemble and assemble.

[0082] In some embodiments, the shielding structure further includes a third shielding part (not shown), and the third shielding part is connected to the second shielding part 20; the third shielding part is provided with a second accommodating cavity with an opening for covering the outside of the wiring terminal of the inverter.

[0083] Wherein, the structure of the third shielding part is similar to that of the first shielding part 10, and the third shielding part is also an open hollow structure and covers the outside of the wiring terminal of the inverter to prevent the side of the wiring terminal of the inverter facing the user from radiating electromagnetic waves, and the safety of the user is relatively high.

[0084] This embodiment provides a power system (not shown), which includes a motor, an inverter, an electrical connection line and the above shielding structure; the motor is provided with a wiring terminal connected to the electrical connection line, the other end of the electrical connection line is connected to the inverter, and the shielding structure is respectively connected to the motor and the electrical connection line.

[0085] Wherein, the structure, function, working principle, etc. of the shielding structure have been described in the above embodiments, and will not be repeated in this embodiment.

[0086] The power system further includes a battery, which can be a ternary lithium battery, a lithium manganate battery, a lithium iron phosphate battery, etc. The battery is used to provide electrical energy. The battery is connected to an inverter, which is used to convert the direct current of the battery into alternating current and transmit it to the motor. A transmission mechanism is provided between the motor and the vehicle body. When the motor operates, it can drive the vehicle body forward through the transmission mechanism.

[0087] Among them, during the operation of the power system, electromagnetic waves will be generated at the positions where the electrical connection lines are connected to the motor and where the electrical connection lines are connected to the inverter. By setting the above shielding structure, the upward radiation of electromagnetic waves can be avoided, and the safety of some electrical components located above the power system and users inside the vehicle is relatively high.

[0088] This embodiment provides a vehicle (not shown), which includes the above power system. Among them, the structure, function, working principle, etc. of the power system have been described in the above embodiments, and will not be repeated in this embodiment.

[0089] The vehicle includes a vehicle body and a power system. When the power system operates, the power system can drive the vehicle body forward. By adopting the above power system, the radiation of electromagnetic waves from the power system towards the user side inside the vehicle can be avoided, and the safety of users is relatively high.

[0090] In this specification, the embodiments or implementation manners are described in a progressive manner. Each embodiment focuses on the differences from other embodiments. The same or similar parts among the various embodiments can be referred to each other.

[0091] In the description of this specification, the description with reference to terms such as "one implementation manner", "some implementation manners", "illustrative implementation manner", "example", "specific example", or "some examples" means that the specific features, structures, materials, or characteristics described in connection with the implementation manner or example are included in at least one implementation manner or example of the present invention. In this specification, the schematic expressions of the above terms do not necessarily refer to the same implementation manner or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more implementation manners or examples.

[0092] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the various embodiments of the present invention.

Claims

1. A shielding structure is applied to the power system of a vehicle. The power system includes a motor, an inverter, and an electrical connection line. The motor is provided with a terminal connected to the electrical connection line, and the other end of the electrical connection line is connected to the inverter. It is characterized in that, The shielding structure includes a first shielding portion and a second shielding portion. Both the first shielding portion and the second shielding portion are magnetic isolation members. The first shielding portion is provided with an opening and forms the junction box cover plate of the motor. The first shielding portion covers the outer sides of the connection end of the motor and the electrical connection line and a part of the electrical connection line. The first shielding portion is provided with a first accommodating cavity having an opening for covering the outer side of the connection end of the motor. The first shielding portion further has a wiring hole which communicates the inner and outer sides of the first accommodating cavity for the electrical connection line to pass through. The second shielding portion is connected to the first shielding portion and extends along the extending direction of the electrical connection line and is arranged on the outer side of the circumference of the electrical connection line. An opening is provided on the second shielding portion and the opening faces the ground. The second shielding portion includes a first shielding section and a second shielding section. The first shielding section protrudes from the outer wall surface of the first shielding portion. The second shielding section is detachably connected to the first shielding section and extends along the extending direction of the electrical connection line. Wherein, the first shielding section and the second shielding section partially overlap to lap with each other. The shielding structure further includes a clamping assembly. The clamping assembly includes a first clamping member and a second clamping member. The first clamping member and the second clamping member are respectively located on both sides of the second shielding section. The first clamping member and the second clamping member are connected to fix the electrical connection line on the second shielding section. The clamping assembly can be clamped and fixed at different positions on the second shielding section. The first clamping member is arranged opposite to the electrical connection line. Three limiting grooves arranged in parallel are provided on the first clamping member. The limiting grooves are used for clamping and fixing the electrical connection line, and the distance between two adjacent limiting grooves is the same.

2. The shielding structure according to claim 1, characterized in that, The opening penetrates through both ends of the second shielding portion along the extending direction of the electrical connection line.

3. The shielding structure according to claim 1, wherein The clamping assembly is detachably connected to the first shielding section.

4. The shielding structure according to any one of claims 1-2, characterized in that, The shielding structure further includes a third shielding portion. The third shielding portion is connected to the second shielding portion. The third shielding portion is provided with a second accommodating cavity having an opening for covering the outer side of the connection end of the inverter.

5. A power system, characterized in that, It includes a motor, an inverter, an electrical connection line and the shielding structure according to any one of claims 1-4. The motor is provided with a connection end connected to the electrical connection line. The other end of the electrical connection line is connected to the inverter. The shielding structure is respectively connected to the motor and the electrical connection line.

6. A vehicle, characterized in that, It includes the power system according to claim 5.

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