Conductive rod, conductive rod assembly, electrical system, and vehicle

Abstract

A conductive rod including a conductive rod body, the diameter of the conductive rod body satisfies formula (1), where δ is the diameter of the conductive rod body in mm, L is the length of the conductive rod body in mm, E is the elastic modulus of the conductive rod body in Gpa, and μ is 0.5 Gpa. 1 / 4 That is, a conductive rod.

Description

[Technical Field]

[0001] Cross-reference to related disclosures This disclosure claims priority to Chinese Patent Disclosure No. 202211730874.3, filed December 30, 2022, and entitled "CONDUCTIVE ROD, CONDUCTIVE ROD ASSEMBLY, ELECTRICAL SYSTEM, AND VEHICLE," which is incorporated herein by reference in its entirety.

[0002] The present disclosure relates to the technical field of vehicle electrical systems, and in particular to conductive rods, conductive rod assemblies including conductive rods, electrical systems including conductive rod assemblies, and vehicles including electrical systems. [Background technology]

[0003] In the vehicle, both ends of the conductive bar are configured to be fixed to different electrical devices to realize electrical connection of the different electrical devices and provide power distribution and electricity for the vehicle during operation.

[0004] When a vehicle is traveling, it must pass through various road conditions that cause vibration, and the conductive rod also vibrates accordingly. In the prior art, the ratio of the diameter, length and elastic modulus of the conductive rod is not optimal, which causes large stresses in the vibrating conductive rod, which may lead to loosening, deformation or even damage to the conductive rod.

[0005] Therefore, the problem that a person skilled in the art must solve is how to obtain the optimum ratio between the diameter, length and modulus of elasticity of the conductive rod. Summary of the Invention

[0006] Considering the drawbacks of the above-mentioned techniques, an object of the present disclosure is to provide a conductive rod, a conductive rod assembly including the conductive rod, an electrical system including the conductive rod assembly, and a vehicle including the electrical system, and also aims to solve the problem of large stress in a vibrating conductive rod caused by a non-optimal ratio of the diameter, length, and elastic modulus of the conductive rod in the prior art.

[0007] In order to solve the above problems, the present disclosure provides a conductive rod including a conductive rod body, wherein the diameter of the conductive rod body is:

number

[0008] In summary, an embodiment of the present disclosure provides a conductive rod including a conductive rod body, the diameter of the conductive rod body being:

number

[0009] In an exemplary embodiment, the conductive rod further includes a first transition portion, a second transition portion, a first connecting portion, and a second connecting portion, the first transition portion and the second transition portion being respectively connected to opposite ends of the conductive rod body, the first connecting portion being connected to the end of the first transition portion facing away from the conductive rod body, and the second connecting portion being connected to the end of the second transition portion facing away from the conductive rod body. The cross-sectional area of ​​the first transition portion is between the cross-sectional area of ​​the first connecting portion and the cross-sectional area of ​​the conductive rod body, and the cross-sectional area of ​​the second transition portion is between the cross-sectional area of ​​the second connecting portion and the cross-sectional area of ​​the conductive rod body.

[0010] In one exemplary embodiment, a first connection hole is arranged at an end of the first connection portion facing the opposite side from the first transition portion, and a second connection hole is arranged at an end of the second connection portion facing the opposite side from the second transition portion, the first connection hole being configured to secure the first connection portion to an electrical device, and the second connection hole being configured to secure the second connection portion to another electrical device.

[0011] In one exemplary embodiment, the end surface of the first connecting portion facing away from the first transition portion is curved, and the end surface of the second connecting portion facing away from the second transition portion is curved.

[0012] In one exemplary embodiment, a first positioning hole is disposed in the first connection portion, a second positioning hole is disposed in the second connection portion, the first positioning hole is configured to position the first connection portion with an electrical device, and the second positioning hole is configured to position the second connection portion with another electrical device.

[0013] In one exemplary embodiment, the conductive rod body, the first transition portion, the second transition portion, the first connecting portion, and the second connecting portion are integrally formed.

[0014] In an exemplary embodiment, the conductive rod further includes a bonding layer and a reinforcing layer, the bonding layer being disposed on a surface of the conductive rod body, on a surface of the first transition portion, on a surface of the second transition portion, on a surface of the first connecting portion, and on a surface of the second connecting portion, and the reinforcing layer being disposed on an outer surface of the bonding layer, and the bonding layer being configured to bond the conductive rod body and the reinforcing layer, the first transition portion and the reinforcing layer, the second transition portion and the reinforcing layer, the first connecting portion and the reinforcing layer, and the second connecting portion and the reinforcing layer.

[0015] In one exemplary embodiment, the bonding layer and the reinforcing layer are exposed through the first and second alignment holes.

[0016] In one exemplary embodiment, the surface roughness of the outer surface of the reinforcing layer is 1.6 or less and the Vickers hardness of the reinforcing layer is greater than 38.

[0017] In one exemplary embodiment, the conductive rod further includes an insulating layer, the insulating layer being disposed on a partial peripheral side of the reinforcing layer, the insulating layer being exposed from the area where the first connection hole is disposed, and the insulating layer being exposed from the area where the second connection hole is disposed.

[0018] In one exemplary embodiment, the conductive rod further includes a shielding layer, the shielding layer disposed on a peripheral side of the insulating layer, and the shielding layer configured to shield a magnetic field.

[0019] In one exemplary embodiment, the conductive rod body includes a plurality of conductive portions and at least one bend, and the at least one bend is connected to the plurality of conductive portions in alternating sequence.

[0020] In one exemplary embodiment, the material of the conductive rod comprises 0.02 to 0.85 weight percent magnesium, 0.01 to 0.41 weight percent silicon, 0.01 to 0.04 weight percent boron, 0.01 to 0.07 weight percent iron, and 98.59 to 99.95 weight percent aluminum.

[0021] In one exemplary embodiment, the total weight percentage of magnesium, silicon, boron, iron, and aluminum is greater than 99.9%.

[0022] In one exemplary embodiment, the material of the conductive rods includes Al3Fe and AlSiFe.

[0023] In one exemplary embodiment,

number

[0024] In one exemplary embodiment, the modulus of elasticity of the conductive rod body ranges from 55 Gpa to 120 Gpa.

[0025] Based on the same inventive concept, the present disclosure also provides a conductive rod assembly, which includes a connecting structure and a plurality of the above-mentioned conductive rods, wherein the plurality of conductive rods are fixed to the connecting structure.

[0026] In summary, an embodiment of the present disclosure provides a conductive rod assembly including a connecting structure and a conductive rod, the conductive rod including a conductive rod body, and the diameter of the conductive rod body is:

number

[0027] Based on the same inventive concept, the present disclosure also provides an electrical system, which includes a plurality of electrical devices and the above-mentioned conductive rod assembly, and two ends of the conductive rods of the conductive rod assembly are respectively fixed to and electrically connected to different electrical devices.

[0028] In summary, an embodiment of the present disclosure provides an electrical system including an electrical device and a conductive rod assembly, the conductive rod assembly including a connecting structure and a conductive rod, the conductive rod including a conductive rod body, and a diameter of the conductive rod body is:

number

[0029] Based on the same inventive concept, the present disclosure also provides a vehicle including a vehicle body and the above-mentioned electrical system, wherein the electrical system is disposed within the vehicle body.

[0030] In summary, an embodiment of the present disclosure provides a vehicle including a vehicle body and an electrical system, the electrical system including an electrical device and a conductive rod assembly, the conductive rod assembly including a connection structure and a conductive rod, the conductive rod including a conductive rod body, and a diameter of the conductive rod body is:

number

[0031] In order to more clearly show the technical solutions in the embodiments of the present disclosure, the drawings needed to be used in the embodiments will be briefly described, and it is obvious that the drawings in the following description are some embodiments of the present disclosure, and that those skilled in the art can derive other drawings from these drawings without inventive efforts. [Brief explanation of the drawings]

[0032] [Figure 1] 1 is a schematic top view of a first structure of a conductive rod disclosed in an embodiment of the present disclosure; FIG. [Figure 2]1 is a schematic front view of a first structure of a conductive rod disclosed in an embodiment of the present disclosure; FIG. [Figure 3] FIG. 1 is a stress contour diagram of a simulated test of a first test group disclosed in an embodiment of the present disclosure. [Figure 4] FIG. 10 is a stress contour diagram of a simulated test of the second test group disclosed in one embodiment of the present disclosure. [Figure 5] FIG. 10 is a stress contour diagram of a simulated test of the third test group disclosed in one embodiment of the present disclosure. [Figure 6] FIG. 10 is a stress contour diagram of a simulated test of the fourth test group disclosed in one embodiment of the present disclosure. [Figure 7] FIG. 10 is a stress contour diagram of a simulated test of the fifth test group disclosed in one embodiment of the present disclosure. [Figure 8] FIG. 10 is a stress contour diagram of a simulated test of the sixth test group disclosed in one embodiment of the present disclosure. [Figure 9] FIG. 2 is a schematic top view of a second structure of a conductive rod disclosed in an embodiment of the present disclosure. [Figure 10] FIG. 10 is a schematic top view of a third structure of a conductive rod disclosed in an embodiment of the present disclosure. [Figure 11] 11 is a schematic cross-sectional view of the conductive rod in FIG. 10 taken along the line XI-XI. [Figure 12] FIG. 1 is a structural diagram of a conductive rod assembly disclosed in an embodiment of the present disclosure. [Figure 13] 1 is a structural diagram of an electrical system disclosed in one embodiment of the present disclosure. [Figure 14] 1 is a structural diagram of a vehicle disclosed in an embodiment of the present disclosure. [Explanation of symbols]

[0033] 10 conductive rod body, 11 conductive portion, 13 bend portion, 20 first transition portion, 30 second transition portion, 40 first connection portion, 41 first connection hole, 43 first arrangement hole, 50 second connection portion, 51 second connection hole, 53 second arrangement hole, 70 joining layer, 80 reinforcing layer, 90 insulating layer, 100 conductive rod, 100a conductive rod, 100b conductive rod, 110 shielding layer, 200 connection structure, 300 conductive rod assembly, 400 electrical device, 500 electrical system, 700 car body, 800 vehicle DETAILED DESCRIPTION OF THE INVENTION

[0034] Exemplary embodiments are described in detail herein, examples of which are illustrated in the drawings. When referring to the drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present disclosure. On the contrary, the embodiments are merely examples of devices and methods consistent with some aspects of the present disclosure as set forth in the appended claims.

[0035] The following description of the embodiments refers to the drawings to illustrate specific embodiments that may be implemented in the present disclosure. The serial numbers of components in this specification, such as "first," "second," etc., are used merely to distinguish the objects being described and do not have any hierarchical or technical significance. The terms "connection" and "coupling" used in this disclosure include both direct and indirect connections (couplings) unless otherwise specified. Directional terms used in this disclosure, such as "up," "down," "front," "rear," "left," "right," "inner," "outer," "side," etc., are merely relative to the orientation in the accompanying drawings. Therefore, the directional terms used are for better and clearer explanation and understanding of the present disclosure and do not indicate or imply that the referred devices or components must have a particular orientation, be configured in a particular orientation, or be operated in a particular orientation, and therefore cannot be understood as limitations of the present disclosure.

[0036] It should be noted that in the description of this disclosure, unless otherwise specified and limited, the terms “mount,” “connect,” and “connection” should be understood broadly, for example, to mean fixedly connected, detachably connected, integrally connected, mechanically connected, directly connected, indirectly connected through an intermediate medium, or internal communication between two elements. For those skilled in the art, the specific meaning of the above terms in this disclosure can be understood in specific situations. It should be noted that the terms “first,” “second,” etc. in the description, claims, and drawings of this disclosure are used to distinguish various objects rather than to describe a specific order. Furthermore, the terms “include,” “may include,” “contain,” or “may contain” used in this disclosure indicate the presence of corresponding disclosed functions, operations, elements, etc., and do not limit the presence of one or more additional functions, operations, elements, etc. The term "include" or "contain" indicates the presence of the corresponding feature, number, step, operation, element, component, or combination thereof disclosed in the description, and does not exclude the presence or addition of one or more other features, numbers, steps, operations, elements, components, or combinations thereof, with the intention of covering a non-exclusive inclusion.

[0037] Depending on the context, the word "if" as used herein may be interpreted as "at," "when," "in response to determination," or "in response to detection." Similarly, depending on the context, the phrases "if it is determined" or "if (a stated condition or event) is detected" may be interpreted as "when it is determined," "in response to determination," "when (a stated condition or event) is detected," or "in response to detection of (a stated condition or event)."

[0038] In the following description, suffixes such as "module," "component," or "unit" used to denote elements are used merely to facilitate the description of the present disclosure and do not have any particular meaning. Thus, "module," "component," or "unit" may be used interchangeably.

[0039] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art. The terms used herein in describing the present disclosure are for the purpose of describing particular embodiments only and are not intended to be limiting of the present disclosure.

[0040] In a vehicle, both ends of a conductive rod are configured to be fixed to different electrical devices to realize electrical connection between the different electrical devices and provide power distribution and electricity for the vehicle to operate. The vehicle needs to pass through various road conditions with vibrations while traveling, and the conductive rod also vibrates accordingly. In the prior art, the ratio of the diameter, length, and elastic modulus of the conductive rod is not optimal, which causes large stress in the vibrating conductive rod, which may lead to loosening, deformation, or even damage to the conductive rod.

[0041] Therefore, an object of the present disclosure is to provide a conductive rod, a conductive rod assembly including the conductive rod, an electrical system including the conductive rod assembly, and a vehicle including the electrical system, and also to solve the problem of high stress in a vibrating conductive rod caused by a non-optimal ratio of the diameter, length, and elastic modulus of the conductive rod in the prior art.

[0042] 1 and 2, Fig. 1 is a schematic top view of a first structure of a conductive rod disclosed in an embodiment of the present disclosure, and Fig. 2 is a schematic front view of the first structure of a conductive rod disclosed in an embodiment of the present disclosure. A conductive rod 100 provided by an embodiment of the present disclosure includes a conductive rod body 10, and the diameter of the conductive rod body 10 is

number

[0043] In one embodiment of the present disclosure, the diameter δ of the conductive rod body 10 is:

number

number

number

number

number

[0044] In an exemplary embodiment, depending on the materials and processes used to form the conductive rod body 10, the elastic modulus E of the conductive rod body 10 is in the range of [55 Gpa, 120 Gpa], such as 55 Gpa, 62 Gpa, 69 Gpa, 73 Gpa, 85 Gpa, 92 Gpa, 100 Gpa, 107 Gpa, 116 Gpa, 120 Gpa, or other values, which are not particularly limited herein.

[0045] In one exemplary embodiment,

number

[0046] In one embodiment of the present disclosure, the conductive rod 100 further includes a first transition portion 20, a second transition portion 30, a first connecting portion 40, and a second connecting portion 50. The first transition portion 20 and the second transition portion 30 are respectively connected to opposite ends of the conductive rod body 10, i.e., the first transition portion 20 is connected to one end of the conductive rod body 10, and the second transition portion 30 is connected to the opposite end of the conductive rod body 10. The first connecting portion 40 is connected to the end of the first transition portion 20 facing away from the conductive rod body 10, and the second connecting portion 50 is connected to the end of the second transition portion 30 facing away from the conductive rod body 10, i.e., the first transition portion 20 is connected between the first connecting portion 40 and the conductive rod body 10, and the second transition portion 30 is connected between the second connecting portion 50 and the conductive rod body 10. The first connecting portion 40 and the second connecting portion 50 are configured to be connected to various electrical devices to realize electrical connection between the conductive rod 100 and various electrical devices.

[0047] It will be appreciated that because the first connecting portion 40 is connected to an electrical device, the size of the first connecting portion 40 is smaller, i.e., the cross-sectional area of ​​the first connecting portion 40 is smaller than the cross-sectional area of ​​the conductive rod body 10. To avoid a sudden change in the cross-sectional area of ​​the conductive rod 100 caused by direct connection of the first connecting portion 40 to the conductive rod body 10, a larger stress concentration may occur at the point of the sudden change in cross-sectional area. The first transition portion 20 is disposed between the conductive rod body 10 and the first connecting portion 40, and the cross-sectional area of ​​the first transition portion 20 is between the cross-sectional area of ​​the first connecting portion 40 and the cross-sectional area of ​​the conductive rod body 10, thereby avoiding a sudden change in the cross-sectional area of ​​the conductive rod 100 and reducing the stress concentration at the point of the change in cross-sectional area. Similarly, the cross-sectional area of ​​the second transition portion 30 is between the cross-sectional area of ​​the second connecting portion 50 and the cross-sectional area of ​​the conductive rod body 10, and the relevant functions of the second transition portion 30 and the second connecting portion 50 are described above and will not be repeated here. The cross section is a plane perpendicular to the axis of the conductive rod 100.

[0048] In an exemplary embodiment, the conductive rod body 10, the first transition portion 20, the second transition portion 30, the first connecting portion 40, and the second connecting portion 50 are integrally formed. The conductive rod 100 can be formed by integral molding, which is beneficial for increasing the installation accuracy of the conductive rod 100.

[0049] In an exemplary embodiment, the overall shape of the conductive rod body 10 may be cylindrical, and the cross section of the conductive rod body 10 may be circular. The overall shape of the first transition portion 20 and the second transition portion 30 may be cylindrical, and the cross section of the first transition portion 20 and the second transition portion 30 may be circular. The overall shape of the first connection portion 40 and the second connection portion 50 may be a sheet-like structure, and the cross section of the first connection portion 40 and the second connection portion 50 may be rectangular.

[0050] It will be appreciated that the overall shape of the first connecting portion 40 and the second connecting portion 50 is designed as a sheet-like structure to facilitate contact between the first connecting portion 40 and the electrical device and between the second connecting portion 50 and the electrical device.

[0051] 1 and 2 , in one embodiment of the present disclosure, the first connection hole 41 is disposed at an end of the first connection portion 40 facing away from the first transition portion 20, and the second connection hole 51 is disposed at an end of the second connection portion 50 facing away from the second transition portion 30. The first connection hole 41 cooperates with the fixing assembly to fix the first connection portion 40 to the electrical device, and the second connection hole 51 cooperates with the fixing assembly to fix the second connection portion 50 to the electrical device. It will be appreciated that the cooperation of the first connection hole 41 with the fixing assembly and the cooperation of the second connection hole 51 with the fixing assembly facilitates installation and removal of the conductive rod 100.

[0052] In one exemplary embodiment, the fastening assembly may include a bolt and a nut.

[0053] In an exemplary embodiment, the end surface of the first connecting portion 40 facing away from the first transition portion 20 is curved, and the end surface of the second connecting portion 50 facing away from the second transition portion 30 is curved.

[0054] In one exemplary embodiment, the first arrangement hole 43 is disposed in the first connection portion 40, and the second arrangement hole 53 is disposed in the second connection portion 50, the first arrangement hole 43 facilitates arrangement of the first connection portion 40 with an electrical device, and the second arrangement hole 53 facilitates arrangement of the second connection portion 50 with another electrical device, and at the same time, the first arrangement hole 43 and the second arrangement hole 53 are also configured to fix the conductive rod 100 to various electrical devices.

[0055] In one embodiment of the present disclosure, the stress in the conductive rod 100 is affected by various factors, such as the coefficient of expansion of the conductive rod body 10, the aging temperature of the conductive rod body 10 (i.e., the temperature at which the conductive rod body 10 vibrates), the aging time (i.e., the duration of the vibration of the conductive rod body 10), and the elastic modulus E of the conductive rod body 10. Therefore, the present disclosure selects the factors that have the greatest effect on the stress in the conductive rod body 10 through a design of experiments (DOE).

[0056] In the present disclosure, a simulation test was conducted on the conductive rod 100 shown in FIG. 1 to obtain a stress contour diagram of the conductive rod 100. The specific test method for the simulation test is to input the parameters of the conductive rod 100 and the parameters of the vibration simulation test into a finite element analysis element to perform a simulation test on the conductive rod 100, where the operating conditions of the vibration simulation test are a vibration broadband frequency in the range of 10 Hz to 1000 Hz, a vibration power spectral density of 0.2 (m / s 2 ) 2 / Hz to 30(m / s 2 ) 2 / Hz range, with a root mean square (RMS) vibration velocity of 27.8 m / s 2The relationship between the influencing factors such as the expansion coefficient, aging temperature, aging time, and elastic modulus E and the maximum stress of the conductive rod 100 is investigated through a large number of test data, and some statistical values ​​of the test results are shown in Tables 1 to 4.

[0057] Table 1. Relationship between expansion coefficient factor and maximum stress of conductive rod [Table 1]

[0058] Table 2 Relationship between aging temperature factor and maximum stress of conductive rod [Table 2]

[0059] Table 3. Relationship between aging time factor and maximum stress of conductive rod [Table 3]

[0060] Table 4. Relationship between elastic modulus factor and maximum stress of conductive rod [Table 4]

[0061] As can be seen from Tables 1 to 4, the expansion coefficient factor, aging temperature factor, and aging time factor do not have much effect on the stress of the conductive rod 100, while the elastic modulus factor has a large effect on the stress of the conductive rod 100, and therefore the elastic modulus factor is determined to be an important factor. On the other hand, it can be seen from Table 4 that the larger the elastic modulus of the conductive rod 100, the smaller the maximum stress value of the conductive rod 100 after vibration.

[0062] In one embodiment of the present disclosure, six test groups were designed by DOE, and the reliability of the above formula (1) was verified by changing the elastic modulus of the conductive rod 100 and the length of the conductive rod body 10.

[0063] The specific test method for the simulation test is to introduce the parameters of the conductive rod 100 and the parameters of the vibration simulation test into the finite element analysis element to perform a simulation test on the conductive rod 100, where the operating conditions of the vibration simulation test are: vibration time is 22 h, vibration broadband frequency is in the range of 10 Hz to 1000 Hz, and vibration power spectral density is 0.2 (m / s 2 ) 2 / Hz to 30(m / s 2 ) 2 / Hz range, with a root mean square (RMS) vibration velocity of 27.8 m / s 2 The results of the simulation tests are shown in Table 5 in conjunction with Figures 3 to 8. Figure 3 is a stress contour map of the simulation test of the first test group disclosed in an embodiment of the present disclosure, Figure 4 is a stress contour map of the simulation test of the second test group disclosed in an embodiment of the present disclosure, Figure 5 is a stress contour map of the simulation test of the third test group disclosed in an embodiment of the present disclosure, Figure 6 is a stress contour map of the simulation test of the fourth test group disclosed in an embodiment of the present disclosure, Figure 7 is a stress contour map of the simulation test of the fifth test group disclosed in an embodiment of the present disclosure, and Figure 8 is a stress contour map of the simulation test of the sixth test group disclosed in an embodiment of the present disclosure.

[0064] Table 5. Relationship between the maximum stress of the conductive rod and the length, elastic modulus, and diameter of the conductive rod body [Table 5]

[0065] In one embodiment of the present disclosure, under the same operating conditions of the vibration simulation test, as can be seen from FIG. 3, the maximum stress of the conductive rods 100 of the first test group is 25.30 MPa, as can be seen from FIG. 4, the maximum stress of the conductive rods 100 of the second test group is 13.29 MPa, as can be seen from FIG. 5, the maximum stress of the conductive rods 100 of the third test group is 50.86 MPa, as can be seen from FIG. 6, the maximum stress of the conductive rods 100 of the fourth test group is 189.80 MPa, as can be seen from FIG. 7, the maximum stress of the conductive rods 100 of the fifth test group is 152.58 MPa, and as can be seen from FIG. 8, the maximum stress of the conductive rods 100 of the sixth test group is 110.74 MPa.

[0066] In one embodiment of the present disclosure, as can be seen from Table 5, in the first, second, and third test groups, the diameter of the conductive rod body during the test falls within the diameter range of the conductive rod body obtained from the above formula (1), while in the fourth, fifth, and sixth test groups, the diameter of the conductive rod body during the test does not fall within the diameter range of the conductive rod body obtained from the above formula (1). The maximum stress of the conductive rods 100 in the first, second, and third test groups is much smaller than the maximum stress of the conductive rods 100 in the fourth, fifth, and sixth test groups.

[0067] In one embodiment of the present disclosure, the conductive rods 100 of the first, second, and third test groups are processed to perform a torque decay test on the conductive rods 100. The operating conditions for the torque decay test are a vibration time of 22 h, a vibration broadband frequency range of 10 Hz to 1000 Hz, and a vibration power spectral density of 0.2 (m / s 2 ) 2 / Hz to 30(m / s 2 ) 2 / Hz range, with a root mean square (RMS) vibration velocity of 27.8 m / s 2The torque decay test method is as follows: before the test, a bolt is assembled into the first connection hole 41, a bolt is assembled into the second connection hole 51, and the conductive rod 100 is fixed by aligning the nut and bolt. Specifically, the torque is gradually increased by a steady force from a torque wrench. When the nut or bolt just begins to rotate slightly, the instantaneous torque value is at its maximum (the static friction force needs to be overcome). As the rotation continues, the torque value falls back to a stable state for a short time. This torque value is the pre-test torque value. After the test, torque is slowly applied to the nut or bolt with a torque wrench, the nut or bolt is loosened, and the instantaneous torque value at the start of rotation is read and multiplied by a coefficient (typically 1.1 to 1.2) based on testing and experience to obtain the post-test torque value. The torque decay test results are shown in Table 6.

[0068] Table 6 Torque decay test results [Table 6]

[0069] From the torque decay test results in Table 6, it can be calculated that Attenuation value 1 = (6.05 - 5.35) / 6.05 × 100% = 11.57% < 20% (2) Attenuation value 2 = (6.02 - 5.29) / 6.02 × 100% = 12.13% < 20% (3) is.

[0070] As can be seen from the above equations (2) and (3), the torque of the bolt and nut securing the first connection hole 41 is attenuated by 11.57% after the torque test, and the torque of the bolt and nut securing the second connection hole 51 is attenuated by 12.13% after the torque test.

[0071] It will be appreciated that according to the formula (1) of the present disclosure, the ratio of the diameter, length and elastic modulus of the conductive rod 100 is within the optimum range, so that the stress in the vibrating conductive rod 100 is smaller, and the torque attenuation of the fixing assembly for fixing the conductive rod 100 is also less than 20%. Therefore, the conductive rod 100 of the present disclosure can be used with a wide frequency range from 10 Hz to 1000 Hz and a vibration speed of 0.2 (m / s 2 ) 2 / Hz to 30(m / s 2 ) 2 / Hz power spectral density and 27.8 m / s 2 It can withstand vibrations with a root mean square (RNS) of vibration velocity of for a long period of time.

[0072] In summary, an embodiment of the present disclosure provides a conductive rod 100 including a conductive rod body 10, the diameter of the conductive rod body 10 being:

number

[0073] It will be recognized that the poor mechanical properties of the conductive rods are also the reason for the large stresses in the conductive rods, the deformation of the conductive rods, and the severe attenuation of the fastening assemblies for fastening the conductive rods. Generally, the material of the conductive rods meets the following requirements: a yield strength of 75 MPa or more, a tensile strength of 114 MPa or more, no cracks on the surface after a 90-degree bend, and a conductivity of 57% IACS or more. However, the higher the purity of the aluminum alloy, the better the conductivity and the lower the mechanical properties. Therefore, conductive rods with good conductivity in the prior art have poor mechanical properties, while conductive rods with good mechanical properties have poor conductivity.

[0074] In one embodiment of the present disclosure, the material of the conductive rod 100 comprises 0.02 to 0.85 weight % magnesium (Mg), 0.01 to 0.41 weight % silicon (Si), 0.01 to 0.04 weight % boron (B), 0.01 to 0.07 weight % iron (Fe), and 98.59 to 99.95 weight % aluminum (Al), wherein the total weight ratio of magnesium, silicon, boron, iron, and aluminum is greater than 99.9%, and the weight ratios of other elements are less than 0.1%.

[0075] In an exemplary embodiment, the material of the conductive rod 100 includes 0.02% to 0.85% by weight, such as 0.02%, 0.1%, 0.22%, 0.3%, 0.35%, 0.42%, 0.5%, 0.6%, 0.71%, 0.8%, 0.85%, or other values ​​of magnesium (Mg), which is not particularly limited herein. The material of the conductive rod 100 includes 0.01% to 0.41% by weight, such as 0.01%, 0.05%, 0.1%, 0.17%, 0.23%, 0.3%, 0.35%, 0.4%, 0.41%, or other values ​​of silicon (Si), which is not particularly limited herein. The material of the conductive rod 100 includes 0.01 to 0.04% by weight of boron (B), for example, 0.01, 0.02, 0.03, 0.04, or other values, which are not particularly limited herein.The material of the conductive rod 100 includes 0.01 to 0.07% by weight of iron (Fe), for example, 0.01, 0.02, 0.03, 0.04, 0.05, 0.06, 0.07, or other values, which are not particularly limited herein. The material of the conductive rod 100 comprises aluminum (Al) in an amount of 98.59% to 99.95% by weight, for example, 98.59%, 98.65%, 98.77%, 98.9%, 99%, 99.13%, 99.41%, 99.55%, 99.72%, 99.95% by weight, or other values, which are not particularly limited herein.

[0076] In one embodiment of the present disclosure, to verify that the material of the conductive rod 100 provided in the present disclosure has good electrical conductivity and mechanical properties, six groups of conductive rods made of different materials were fabricated and the mechanical properties and electrical conductivity of the conductive rods were tested. The relationship between the material composition of the conductive rods and the mechanical properties and electrical conductivity is shown in Table 7.

[0077] Table 7. Material composition, mechanical properties, and conductivity of the conductive rod [Table 7]

[0078] As can be seen from Table 7, the weight ratios of each component in Groups 1 to 4 are within the weight ratio ranges of each component of the materials for the conductive rod 100 disclosed in the embodiments of the present disclosure, and the mechanical properties and electrical conductivity of the conductive rods in Groups 1 to 4 meet the requirements. In Groups 5 and 6, the weight ratios of other elements are greater than 0.1%, and the mechanical properties of the conductive rods in Groups 5 and 6 do not meet the requirements. Therefore, the conductive rod 100 provided in the present disclosure has good electrical conductivity and mechanical properties.

[0079] It will be appreciated that Si and Fe are added to the conductive rod 100 of the present disclosure so that the material of the conductive rod 100 includes Al3Fe and AlSiFe. Al3Fe and AlSiFe are strengthening phases that can increase the strength of the material. Si and Fe can increase the fluidity and adhesion of the die casting during the formation of the conductive rod 100 (i.e., the conductive rod 100 is formed by a die casting process). However, in the die casting process, excessive addition of Si and Fe results in a decrease in the conductivity of the material of the formed conductive rod 100, and adding less Si and Fe results in insufficient strength of the formed conductive rod 100. Therefore, the Si content in the die casting solution used to make the conductive rod 100 is less than 0.5 wt% and the Fe content is less than 0.1 wt%. wt means weight ratio.

[0080] It will be appreciated that the conductive rod 100 of the present disclosure is made of an aluminum alloy, while the conductive rods of the prior art are made of a copper alloy. The density of the conductive rod 100 of the present disclosure is 2.68 g / cm 3 , which is only about 30% of the density of copper alloy, and the weight of the conductive rod 100 of the present disclosure is reduced by about 40% compared to the weight of the conductive rod in the prior art. At the same time, the cost of the conductive rod 100 of the present disclosure is only about 50% of the cost of a copper alloy conductive rod, realizing a lightweight design, reducing the energy consumption of a vehicle equipped with the conductive rod 100, and improving the mileage of the vehicle.

[0081] In one exemplary embodiment, the material of the conductive rod 100 is strengthened by alloying and heat treatment, so that the strength of the material exceeds the strength of pure aluminum.

[0082] In one exemplary embodiment, the material of the conductive rods 100 in the first test group is the same as the material of the conductive rods 100 in Group 1 such that the elastic modulus of the conductive rods 100 in the first test group is the same as the elastic modulus of the conductive rods 100 in Group 1. The material of the conductive rods 100 in the second test group is the same as the material of the conductive rods 100 in Group 2 such that the elastic modulus of the conductive rods 100 in the second test group is the same as the elastic modulus of the conductive rods 100 in Group 2. The material of the conductive rods 100 in the third test group is the same as the material of the conductive rods 100 in Group 3 such that the elastic modulus of the conductive rods 100 in the third test group is the same as the material of the conductive rods 100 in Group 3. The material of the conductive rods 100 in the fourth test group is the same as the material of the conductive rods 100 in Group 4 such that the elastic modulus of the conductive rods 100 in the fourth test group is the same as the elastic modulus of the conductive rods 100 in Group 4. The material of the conductive rods 100 in the fifth test group is the same as the material of the conductive rods 100 in Group 5, such that the elastic modulus of the conductive rods 100 in the fifth test group is the same as the elastic modulus of the conductive rods 100 in Group 5. The material of the conductive rods 100 in the sixth test group is the same as the material of the conductive rods 100 in Group 6, such that the elastic modulus of the conductive rods 100 in the sixth test group is the same as the elastic modulus of the conductive rods 100 in Group 6.

[0083] In another embodiment of the present disclosure, reference is made to Fig. 9, which is a schematic top view of a second structure of a conductive rod disclosed in an embodiment of the present disclosure. The conductive rod 100a of the second embodiment differs from the conductive rod 100 of the first embodiment in that the conductive rod body 10 of the conductive rod 100a includes a plurality of conductive portions 11 and at least one bent portion 13.

[0084] Specifically, in this embodiment, the conductive rod body 10 includes a plurality of conductive portions 11 and at least one bent portion 13, and the at least one bent portion 13 is connected to the plurality of conductive portions 11 in an alternating sequence.

[0085] In an exemplary embodiment, when the number of bends 13 is one, the number of conductive portions 11 is two, and the bend 13 is connected between two conductive portions 11; when the number of bends 13 is multiple, the multiple bends 13 are connected to the multiple conductive portions 11 in an alternating sequence.

[0086] It will be appreciated that in practical applications, multiple electrical devices are not perfectly straight, and multiple conductive rods are not perfectly straight, so that the conductive rod body 10 includes multiple conductive portions 11 that are distributed at various angles within the application space. If two conductive portions 11 are directly connected, an increased stress concentration occurs at the connection between the two conductive portions 11. Therefore, in order to reduce the stress concentration at the connection between the two conductive portions 11, a bend 13 having an overall shape of an arc-shaped cylinder is provided between the two conductive portions 11 so that the angle at the connection between the two conductive portions 11 changes gradually, thereby avoiding the stress concentration.

[0087] In one exemplary embodiment, the angle between the two conductive portions 11 can be in the range of 35 degrees to 145 degrees, for example, 35 degrees, 45 degrees, 56 degrees, 60 degrees, 69 degrees, 80 degrees, 90 degrees, 100 degrees, 120 degrees, 136 degrees, 145 degrees, or other values, which are not particularly limited herein.

[0088] In one exemplary embodiment, the bend 13 may be of a circular arc cross section, and the corresponding radius of the arc of the bend 13 may be half the diameter of the conductive rod body 10 .

[0089] In an exemplary embodiment, the number of bends 13 and the number of conductive portions 11 may be determined according to the number of bends of the conductive rod 100a. Furthermore, the number of bends of the conductive rod 100a matches the number of bends 13, and the number of conductive portions 11 is one more than the number of bends 13.

[0090] In an exemplary embodiment, the first transition portion 20 includes a plurality of conductive portions 11 and at least one bent portion 13, or the second transition portion 30 includes a plurality of conductive portions 11 and at least one bent portion 13, or the first connection portion 40 includes a plurality of conductive portions 11 and at least one bent portion 13, or the second connection portion 50 includes a plurality of conductive portions 11 and at least one bent portion 13. That is, the bend of the conductive rod 100a may also be in the first transition portion 20, the second transition portion 30, the first connection portion 40, or the second connection portion 50, which is not particularly limited in this specification.

[0091] 10 and 11, in another embodiment of the present disclosure, Fig. 10 is a schematic top view of a third structure of a conductive rod disclosed in an embodiment of the present disclosure, and Fig. 11 is a schematic cross-sectional view of the conductive rod in the XI-XI direction in Fig. 10. The conductive rod 100b of the third embodiment differs from the conductive rod 100 of the first embodiment in that the conductive rod 100b further includes a bonding layer 70, a reinforcing layer 80, an insulating layer 90, and a shielding layer 110.

[0092] 10 and 11 , in an embodiment of the present disclosure, the conductive rod 100b further includes a bonding layer 70 and a reinforcing layer 80, and the bonding layer 70 is disposed on the surface of the conductive rod body 10, on the surface of the first transition portion 20, on the surface of the second transition portion 30, on the surface of the first connecting portion 40, and on the surface of the second connecting portion 50. The bonding layer 70 is surrounded on the conductive rod body 10, on the first transition portion 20, on the second transition portion 30, on the first connecting portion 40, and on the second connecting portion 50. The reinforcing layer 80 is disposed on the outer surface of the bonding layer 70, and the first connecting hole 41 and the second connecting hole 51 are exposed from the reinforcing layer 80. The bonding layer 70 is configured to bond the conductive rod body 10 and the reinforcing layer 80, the first transition portion 20 and the reinforcing layer 80, the second transition portion 30 and the reinforcing layer 80, the first connecting portion 40 and the reinforcing layer 80, and the second connecting portion 50 and the reinforcing layer 80, and the reinforcing layer 80 is configured to resist stress.

[0093] In one exemplary embodiment, first and second placement holes 43 and 53 are exposed from bonding layer 70 and reinforcing layer 80 .

[0094] In an exemplary embodiment, the bonding layer 70 is connected to the surface of the conductive rod body 10, the surface of the first transition portion 20, the surface of the second transition portion 30, the surface of the first connecting portion 40, and the surface of the second connecting portion 50. The reinforcing layer 80 may be connected to the outer surface of the bonding layer 70.

[0095] In an exemplary embodiment, the bonding layer 70 may be formed by an electroplating process or a chemical plating process. Specifically, in the electroplating process, metal ions with positive valence are converted into metal atoms, which are adsorbed on the surface of the conductive rod body 10, the surface of the first transition section 20, the surface of the second transition section 30, the surface of the first connecting section 40, and the surface of the second connecting section 50, and then migrate deep into the surface of the conductive rod body 10, the surface of the first transition section 20, the surface of the second transition section 30, the surface of the first connecting section 40, and the surface of the second connecting section 50 until they are incorporated into the crystal lattices of the conductive rod body 10, the first transition section 20, the second transition section 30, the first connecting section 40, and the second connecting section 50, thereby forming the bonding layer 70. It will be appreciated that the bonding layer 70 formed by electroplating is relatively flat and covers the surfaces of the conductive rod body 10, the first transition portion 20, the second transition portion 30, the first connecting portion 40, and the second connecting portion 50. The surfaces of the bonding layer 70 have good bonding strength and adhesion to avoid peeling of the bonding layer 70 from the conductive rod body 10, the first transition portion 20, the second transition portion 30, the first connecting portion 40, and the second connecting portion 50, and peeling of the reinforcing layer 80 from the bonding layer 70. The reinforcing layer 80 can be formed through a coating process.

[0096] In one exemplary embodiment, the outer surface of the reinforcing layer 80 has a surface roughness Ra of 1.6 or less. It will be appreciated that a lower surface roughness will result in higher fatigue strength.

[0097] In one exemplary embodiment, the Vickers hardness HV of the reinforcing layer 80 is greater than 38 to increase the fatigue resistance of the reinforcing layer 80 .

[0098] In an embodiment of the present disclosure, after the reinforcing layer 80 is formed, it may be subjected to a surface strengthening treatment to generate compressive stress on the surface and improve fatigue resistance. Specifically, a large number of high-speed, continuous projectiles are blasted onto the reinforcing layer 80 to strike it and form depressions on its surface. Strong plastic deformation occurs in the area near the depressions, forming a plastically deformed layer with a certain thickness. In the plastically deformed layer, the microstructure of the reinforcing layer 80 changes, and grain refinement, increased dislocation density, and increased microscopic strain occur, resulting in the formation of subgrains in the plastically deformed layer and increased hardness of the reinforcing layer 80. Repeated formation of the plastically deformed layer forms a residual compressive stress layer in the plastically deformed layer. The residual compressive stress layer allows cracks on the surface of the reinforcing layer 80 to run from the surface to below the surface, effectively reducing the tensile stress generated by external forces or moments on the surface, thereby effectively preventing fatigue cracks and slowing the propagation rate of fatigue cracks. Meanwhile, due to the surface strengthening process described above, the reinforcing layer 80 has the ability to resist salt spray erosion and the effect of an environment with a humidity of 85% and a temperature as low as -40°C, and the reinforcing layer 80 also has excellent electrical conductivity and a wear-resistant surface layer.

[0099] In one exemplary embodiment, the material of the bonding layer 70 includes copper and the material of the reinforcing layer 80 includes nickel.

[0100] In one exemplary embodiment, the thickness of the reinforcing layer 80 may be 10 um and the peel strength of the reinforcing layer 80 is 35 N / mm.

[0101] 11 , the conductive rod 100b further includes an insulating layer 90, which is disposed on a partial peripheral side of the reinforcing layer 80, and is exposed from the region where the first connection hole 41 is disposed and from the region where the second connection hole 51 is disposed. In other words, the region where the first connection hole 41 is disposed is not surrounded by the insulating layer 90, and the region where the second connection hole 51 is disposed is not surrounded by the insulating layer 90. The insulating layer 90 isolates the partial peripheral side of the reinforcing layer 80. In an exemplary embodiment, the insulating layer 90 can be formed by a spray coating process, an extrusion molding process, or a dip molding process.

[0102] In one exemplary embodiment, the material of the insulating layer 90 may be an epoxy resin.

[0103] In one exemplary embodiment, the thickness of the insulating layer 90 may be from 0.3 mm to 0.9 mm, for example, 0.3 mm, 0.4 mm, 0.5 mm, 0.6 mm, 0.7 mm, 0.8 mm, 0.9 mm, or other values, which are not specifically limited herein.

[0104] In one exemplary embodiment, the electrical resistance of insulating layer 90 is greater than 200 mΩ (megohms). Insulating layer 90 can insulate 3000 V of AC, and when insulating 3000 V of AC, the leakage current within 60 seconds is less than 3 mA (milliamperes). Insulating layer 90 can also insulate 1000 V of DC.

[0105] 11, the conductive rod 100b further includes a shielding layer 110, which is disposed on a peripheral side of the insulating layer 90 and connected to the insulating layer 90. The shielding layer 110 is configured to shield a magnetic field.

[0106] It will be appreciated that the current passing through the conductive rod 100b is relatively large, and the conductive rod 100b is prone to generate eddy currents, which will further generate magnetic fields that will affect the normal operation of other conductive rods 100b or electrical devices. Therefore, the shielding layer 110 can shield the magnetic fields generated inside the conductive rod 10b and shield the external magnetic fields.

[0107] In one exemplary embodiment, the area where the first placement hole 43 is located and the area where the second placement hole 53 is located are surrounded by the insulating layer 90 and the shielding layer 110, and the first placement hole 43 and the second placement hole 53 are exposed from the insulating layer 90 and the shielding layer 110, or the area where the first placement hole 43 is located and the area where the second placement hole 53 is located are not surrounded by the insulating layer 90 and the shielding layer 110, which is not particularly limited in this specification.

[0108] In one exemplary embodiment, a spray code is disposed on the surface of the conductive rod 100b, and the spray code is configured to record information such as manufacturing and performance information of the conductive rod 100b.

[0109] In summary, an embodiment of the present disclosure provides a conductive rod 100 (100a, 100b) including a conductive rod body 10, the diameter of the conductive rod body 10 being:

number

[0110] Based on the same inventive concept, an embodiment of the present disclosure also provides a conductive rod assembly, and referring to Fig. 12, Fig. 12 is a structural diagram of the conductive rod assembly disclosed in the embodiment of the present disclosure. The conductive rod assembly 300 according to the embodiment of the present disclosure includes a connection structure 200 and the above-mentioned plurality of conductive rods 100 (100a, 100b), and the plurality of conductive rods 100 (100a, 100b) are fixed to the connection structure 200. The embodiments shown in Figs. 1 to 11 have already described the conductive rods in detail, so they will not be repeated here.

[0111] In an exemplary embodiment, the connection structure 200 may be an insulator, and the plurality of conductive bars are spaced apart from one another on the connection structure 200 .

[0112] In one exemplary embodiment, the conductive rods 100 (100a, 100b) are secured to various electrical devices through cooperation of the conductive rod placement holes and a securing assembly.

[0113] In an exemplary embodiment, the arrangement hole may be arranged in the region where the conductive rod body 10 is arranged, the region where the first transition portion 20 is arranged, the region where the second transition portion 30 is arranged, the region where the first connection portion 40 is arranged, or the region where the second connection portion 50 is arranged, which is not particularly limited in this specification.

[0114] In an exemplary embodiment, a single conductive rod 100 (100a, 100b) can be arranged horizontally, vertically, or at any angle. Multiple conductive rods 100 (100a, 100b) can be arranged horizontally, vertically, or at any angle to each other to form a multi-layered spatial three-dimensional layout in space, and the conductive rods 100 (100a, 100b) can be extended outward and distributed in various combinations so that the conductive rod assembly 300 has the advantages of a compact structure, high space utilization, and easier use.

[0115] In an exemplary embodiment, the plurality of conductive rods 100 (100a, 100b) can be connected to each other in series or in parallel, which is not particularly limited herein. The plurality of conductive rods 100 (100a, 100b) can be arranged in a single layer or in multiple layers, which is not particularly limited herein. The plurality of conductive rods 100 (100a, 100b) can be connected to one or more of the connection structures 200.

[0116] In one exemplary embodiment, the conductive rods 100 (100a, 100b) can be connected to the connection structure 200 by a retaining ring.

[0117] In summary, an embodiment of the present disclosure provides a conductive rod assembly 300 including a connection structure 200 and a plurality of conductive rods, wherein the conductive rods 100 (100a, 100b) include a conductive rod body 10, and the diameter of the conductive rod body 10 is:

number

[0118] Based on the same inventive concept, an embodiment of the present disclosure also provides an electrical system, and referring to Fig. 13, Fig. 13 is a structural diagram of the electrical system disclosed in the embodiment of the present disclosure. The electrical system 500 according to the embodiment of the present disclosure includes a plurality of electrical devices 400 and at least one of the above-mentioned conductive rod assemblies 300, and two ends of the conductive rods of the conductive rod assembly 300 are fixed to different electrical devices 400 and electrically connected to transmit current.

[0119] In one exemplary embodiment, electrical device 400 includes, but is not limited to, a battery pack, a transformer, a motor, a circuit breaker, an AC / DC converter, a switch cabinet, a capacitor, a charging pile, etc., which are not specifically limited herein.

[0120] In one exemplary embodiment, the electrical device 400 can be secured to the connection structure 200 .

[0121] In summary, an embodiment of the present disclosure provides an electrical system 500 including an electrical device 400 and a conductive rod assembly 300, the conductive rod assembly 300 including a connection structure 200 and a plurality of conductive rods, the conductive rods 100 (100a, 100b) including a conductive rod body 10, the diameter of the conductive rod body 10 being:

number

[0122] Based on the same inventive concept, an embodiment of the present disclosure also provides a vehicle, and Fig. 14 is a structural diagram of the vehicle disclosed in the embodiment of the present disclosure. A vehicle 800 according to the embodiment of the present disclosure includes a vehicle body 700 and the above-mentioned electrical system 500, and the electrical system 500 is disposed in the vehicle body 700.

[0123] In an exemplary embodiment, vehicle 800 may be a new energy vehicle.

[0124] In summary, an embodiment of the present disclosure provides a vehicle 800 including a car body 700 and an electrical system 500, the electrical system 500 including an electrical device 400 and a conductive rod assembly 300, the conductive rod assembly 300 including a connection structure 200 and a plurality of conductive rods, the conductive rod 100 (100a, 100b) including a conductive rod body 10, the diameter of the conductive rod body 10 being:

number

[0125] In describing the present disclosure, references to terms such as "one embodiment," "some embodiments," "exemplary embodiments," "example," "specific example," or "some examples" mean that the specific feature, structure, material, or characteristic described in connection with an embodiment or example is included in at least one embodiment or example of the present disclosure. In the present disclosure, descriptive occurrences of such terms may not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

[0126] The application of the present disclosure is not limited to the above embodiments, and those skilled in the art will recognize that improvements and modifications can be made according to the above description, and all improvements and modifications are intended to fall within the scope of the appended claims. Those skilled in the art will understand that all or part of the methods for implementing the above embodiments and equivalent changes described in the appended claims are intended to fall within the scope of the present disclosure.

Claims

1. A conductive rod comprising a conductive rod body (10), the diameter of the conductive rod body being: [Equation 1] where δ is the diameter of the conductive rod body (10) in mm, L is the length of the conductive rod body (10) in mm, E is the elastic modulus of the conductive rod body (10) in Gpa, and μ is 0.5 Gpa. １／４ That is, a conductive rod.

2. The electrical connector further comprises a first transition portion (20), a second transition portion (30), a first connection portion (40), and a second connection portion (50), the first transition portion (20) and the second transition portion (30) being connected to opposite ends of the conductive rod body (10), the first connection portion (40) being connected to an end of the first transition portion (20) facing away from the conductive rod body (10), and the second connection portion (50) being connected to an end of the second transition portion (30) facing away from the conductive rod body (10); 2. The conductive rod of claim 1, wherein a cross-sectional area of ​​the first transition portion (20) is between a cross-sectional area of ​​the first connection portion (40) and a cross-sectional area of ​​the conductive rod body (10), and a cross-sectional area of ​​the second transition portion (30) is between a cross-sectional area of ​​the second connection portion (50) and the cross-sectional area of ​​the conductive rod body (10).

3. 3. The conductive rod according to claim 2, wherein a first connection hole (41) is arranged at an end of the first connection portion (40) facing away from the first transition portion (20), and a second connection hole (51) is arranged at an end of the second connection portion (50) facing away from the second transition portion (30), the first connection hole (41) is configured to fix the first connection portion (40) to an electrical device, and the second connection hole (51) is configured to fix the second connection portion (50) to another electrical device.

4. 4. The conductive rod according to claim 2 or 3, wherein an end surface of the first connection portion (40) facing away from the first transition portion (20) is curved, and an end surface of the second connection portion (50) facing away from the second transition portion (30) is curved.

5. 5. The conductive rod according to claim 2, wherein a first arrangement hole (43) is arranged in the first connection portion (40), a second arrangement hole (53) is arranged in the second connection portion (50), the first arrangement hole (43) is configured to arrange the first connection portion (40) and an electrical device, and the second arrangement hole (53) is configured to arrange the second connection portion (50) and another electrical device.

6. 6. The conductive rod according to claim 2, wherein the conductive rod body (10), the first transition portion (20), the second transition portion (30), the first connection portion (40), and the second connection portion (50) are integrally formed.

7. 6. The conductive rod according to claim 3, further comprising a joining layer (70) and a reinforcing layer (80), wherein the joining layer (70) is disposed on a surface of the conductive rod body (10), on a surface of the first transition portion (20), on a surface of the second transition portion (30), on a surface of the first connecting portion (40), and on a surface of the second connecting portion (50), and the reinforcing layer (80) is disposed on an outer surface of the joining layer (70), and the joining layer (70) is configured to join the conductive rod body (10) and the reinforcing layer (80), the first transition portion (20) and the reinforcing layer (80), the second transition portion (30) and the reinforcing layer (80), the first connecting portion (40) and the reinforcing layer (80), and the second connecting portion (50) and the reinforcing layer (80).

8. The conductive rod according to claim 7, wherein the bonding layer (70) and the reinforcing layer (80) are exposed through the first arrangement hole (43) and the second arrangement hole (53).

9. 9. The conductive rod according to claim 7, wherein the surface roughness of the outer surface of the reinforcing layer (80) is 1.6 or less, and the Vickers hardness of the reinforcing layer (80) is greater than 38.

10. 10. The conductive rod according to claim 7, further comprising an insulating layer (90), the insulating layer (90) being arranged on a partial peripheral side surface of the reinforcing layer (80), the insulating layer (90) being exposed from the area where the first connection hole (41) is arranged, and the insulating layer (90) being exposed from the area where the second connection hole (51) is arranged.

11. 11. The conductive rod of claim 10, further comprising a shielding layer (110), the shielding layer (110) being disposed on a peripheral side of the insulating layer (90), the shielding layer (110) being configured to shield a magnetic field.

12. 12. The conductive rod according to claim 1, wherein the conductive rod body (10) comprises a plurality of conductive portions (11) and at least one bent portion (13), and the at least one bent portion (13) is connected to the plurality of conductive portions (11) in an alternating sequence.

13. 13. The conductive rod according to claim 1, wherein the material of the conductive rod comprises 0.02 to 0.85 wt.% magnesium, 0.01 to 0.41 wt.% silicon, 0.01 to 0.04 wt.% boron, 0.01 to 0.07 wt.% iron, and 98.59 to 99.95 wt.% aluminum.

14. 14. The conductive rod according to claim 13, wherein the total weight ratio of magnesium, silicon, boron, iron, and aluminum is greater than 99.9%.

15. 13. The conductive rod of claim 1, wherein the material of the conductive rod comprises Al3Fe and AlSiFe.

16. Based on the experimental design [Equation 2] The conductive rod according to any one of claims 1 to 15, wherein

17. The conductive rod according to any one of claims 1 to 16, wherein the elastic modulus of the conductive rod body (10) is in the range of 55 Gpa to 120 Gpa.

18. A conductive rod assembly (300) comprising a connection structure and a plurality of conductive rods according to any one of claims 1 to 17, said plurality of conductive rods being fixed to said connection structure.

19. An electrical system (500) comprising a plurality of electrical devices (400) and at least one conductive rod assembly (300) according to claim 18, wherein two ends of the conductive rods of the conductive rod assembly (300) are fixed to and electrically connected to different electrical devices, respectively.

20. A vehicle (800) comprising a vehicle body (700) and the electrical system (500) of claim 19, said electrical system (500) being disposed within said vehicle body (700).

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