Conductive structural member, electric drive system with conductive structural member and vehicle

Abstract

The utility model provides a conductive structural member and an electric drive system with the same and a vehicle, the conductive structural member is used for the vehicle, the vehicle comprises a first motor and a second motor, the first motor comprises a first shell and a first motor shaft, the second motor comprises a second shell and a second motor shaft, and the conductive structural member comprises a conductive base, the conductive base is fixed on the first shell and / or the second shell; and the number of the conductive parts is two, and the two conductive parts are electrically connected with the first motor shaft and the second motor shaft correspondingly. According to the conductive structural member, the conductive structure is arranged between the first motor and the second motor, the problem of electrocorrosion of the first motor and the second motor can be solved, the number of the conductive structures can be reduced, and the size of an electric drive system can be reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of vehicle assembly manufacturing, in particular to an electric drive system and a vehicle having the same. Background Art

[0002] In order to solve the problem of electrical corrosion of the two motors, the electric drive system in the existing solution usually provides a conductive structure for each motor. The two conductive structures will occupy a large space, thereby increasing the volume of the electric drive system, which is not conducive to the installation of the electric drive system. Utility Model Content

[0003] The utility model aims to solve at least one of the technical problems existing in the prior art. To this end, the utility model proposes a conductive structure, which can reduce the volume of the electric drive system.

[0004] According to the conductive structural member of the embodiment of the utility model, the vehicle includes a first motor and a second motor, the first motor includes a first shell and a first motor shaft, the second motor includes a second shell and a second motor shaft, and the conductive structural member includes: a conductive base, the conductive base is fixed to the first shell and / or the second shell; a conductive member, the number of the conductive members is two, and the two conductive members are electrically connected to the first motor shaft and the second motor shaft respectively to ground the first motor and / or the second motor.

[0005] According to the conductive structural part of the utility model, a conductive structure is arranged between the first motor and the second motor, and the current in the first motor shaft and the second electrolytic shaft can be conducted to the first shell and / or the second shell, thereby solving the problem of electrical corrosion of the first motor and the second motor. At the same time, the number of conductive structures arranged can be reduced, the volume of the electric drive system can be reduced, and the production cost of the electric drive system can be reduced.

[0006] According to some embodiments of the utility model, the conductive structural member includes: an elastic member, which is conductive, connected between the conductive base and the conductive member, and used to push the conductive member to abut against the first motor shaft or the second motor shaft.

[0007] According to some embodiments of the present utility model, the conductive member includes: a connecting plate and a boss, wherein the boss is arranged on the connecting plate, and the boss is in contact with the first motor shaft or the second motor shaft.

[0008] According to some optional embodiments of the present invention, the connecting plate is arranged perpendicular to the axial direction of the first motor shaft, a plurality of bosses are provided on the connecting plate, and the plurality of bosses are arranged at intervals along the circumference of the connecting plate.

[0009] According to some optional embodiments of the present utility model, the connecting plate is circular, the number of the bosses is two, and the two bosses are arranged at intervals along the radial direction of the connecting plate.

[0010] According to some embodiments of the present invention, at least one of the conductive member, the conductive base and the elastic member is a carbon ink member.

[0011] According to some embodiments of the utility model, the conductive member is formed with a first guide portion, and the conductive base is formed with a second guide portion, and the first guide portion and the second guide portion are guided and matched to allow the conductive member and the conductive base to be slidably connected along the axial direction of the first motor shaft.

[0012] According to some optional embodiments of the present invention, one of the first guide portion and the second guide portion is formed as a guide column, and the other is formed as a guide hole, the guide hole extends along the axial direction of the first motor shaft, the guide column extends into the guide hole, and can slide along the guide hole in the axial direction of the first motor shaft.

[0013] According to some optional embodiments of the utility model, the conductive base includes: a base and a partition, the base is a hollow cylinder extending along the axis of the first motor shaft, the base is fixed to the first shell and / or the second shell, the partition is arranged on the inner side of the base, and divides the space in the base into two guide holes.

[0014] According to an electric drive system of an embodiment of the second aspect of the utility model, the electric drive system includes: a first motor; a second motor; a conductive structure according to the first aspect of the utility model, wherein the conductive structure is arranged between the first motor and the second motor, and the conductive structure is electrically connected to the first motor shaft and the second motor shaft, and the conductive structure is configured to electrically connect the first motor shaft and the second motor shaft to the first shell and / or the second shell so as to ground the first motor shaft and the second motor shaft through the first shell and / or the second shell.

[0015] According to the electric drive system of the utility model, by setting the conductive structure of the first embodiment of the utility model, the conductive structure is set between the first motor and the second motor, and the current in the first motor shaft and the second electrolytic shaft can be led to the first shell and / or the second shell, so that the problem of electrical corrosion of the first motor and the second motor can be solved. At the same time, the number of conductive structures set can be reduced, the volume of the electric drive system can be reduced, and the production cost of the electric drive system can be reduced. In addition, the two bosses can ensure that the bosses stably contact the first motor shaft or the second motor shaft, and can also solve the problem of contact vibration between the bosses and the first motor shaft or the second motor shaft.

[0016] According to some embodiments of the present invention, the first motor shaft and the second motor shaft both extend in the left-right direction of the vehicle, and the first motor shaft and the second motor shaft are arranged at intervals in the left-right direction of the vehicle, and the conductive structure is disposed between the first motor shaft and the second motor shaft.

[0017] The vehicle according to the embodiment of the third aspect of the utility model includes the electric drive system according to the second aspect of the utility model.

[0018] According to the vehicle of the utility model, by setting the electric drive system of the above-mentioned second aspect embodiment, setting the above-mentioned conductive structural member of the first aspect embodiment on the electric drive system, and setting a conductive structure between the first motor and the second motor, the current in the first motor shaft and the second electrolytic shaft can be conducted to the first shell and / or the second shell, thereby solving the problem of electrical corrosion of the first motor and the second motor. At the same time, the number of conductive structures set can be reduced, the volume of the electric drive system can be reduced, and the production cost of the electric drive system can be reduced.

[0019] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 is a schematic diagram of a vehicle according to an embodiment of the third aspect of the utility model;

[0021] Figure 2 yes Figure 1 A partial schematic diagram of the electric drive system shown in ;

[0022] Figure 3 yes Figure 2 Schematic diagram of the conductive structure shown in;

[0023] Figure 4 yes Figure 3 Schematic diagram of the conductive member shown in .

[0024] Reference numerals:

[0025] 100. Electric drive system;

[0026] 10. first motor; 11. first motor shaft; 12. first housing; 13. input shaft; 14. retaining spring; 151. first bearing; 152. second bearing; 153. third bearing; 16. resolver limit sleeve; 17. resolver; 18. rotor;

[0027] 20. A second motor; 21. A second housing;

[0028] 30. Conductive structural member; 31. Conductive base; 311. Base; 312. Partition plate; 313. Guide hole; 32. Conductive member; 321. Connecting plate; 322. Boss; 323. Guide column; 33. Elastic member;

[0029] 200, wheel;

[0030] 1000. Vehicles. DETAILED DESCRIPTION

[0031] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and should not be construed as limiting the present invention.

[0032] Please refer to the following Figure 1-Figure 4 The conductive structure 30 according to the embodiment of the present invention is described.

[0033] Reference Figure 1 and Figure 2 According to the conductive structure 30 of the embodiment of the utility model, the vehicle 1000 includes: a first motor 10 and a second motor 20, the first motor 10 includes a first housing 12 and a first motor shaft 11, and the second motor 20 includes a second housing 21 and a second motor shaft conductive structure 30.

[0034] The conductive structural member 30 includes: a conductive base 31 and a conductive member 32. The conductive base 31 is fixed to the first shell 12 and / or the second shell 21. That is, the conductive base 31 can be fixed to the first shell 12, the conductive base 31 can also be fixed to the second shell 21, and the conductive base 31 can also be fixed to the first shell 12 and the second shell 21. There are two conductive members 32, and the two conductive members 32 are electrically connected to the first motor shaft 11 and the second motor shaft respectively to ground the first motor 10 and / or the second motor 20.

[0035] For example, Figure 1 and Figure 2 As shown, the conductive base 31 is fixed between the first shell 12 and the second shell 21, two conductive members 32 are respectively arranged on the left and right sides of the conductive base 31, and the conductive structural member 30 is electrically connected to the first motor shaft 11 of the first motor 10 and the second motor shaft of the second motor 20.

[0036] The conductive structure 30 is fixed to the first shell 12 and / or the second shell 21 through the conductive base 31, thereby effectively preventing the conductive structure 30 from being separated from the first shell 12 and / or the second shell 21. At the same time, the two conductive members 32 can respectively transfer the current of the first motor shaft 11 and the second motor shaft to the first shell 12 and / or the second shell 21, thereby achieving grounding of the first motor shaft 11 and the second motor shaft, which can effectively prevent electrical corrosion of the first motor shaft 11 and the second motor shaft.

[0037] According to the electric drive system 100 of the embodiment of the utility model, a conductive structural member 30 is arranged between the first motor 10 and the second motor 20. The conductive structural member 30 is electrically connected to the first motor shaft 11 and the second motor shaft, and the current in the first motor shaft 11 and the second motor shaft can be guided to the first shell 12 and / or the second shell 21 through the conductive structural member 30, which can effectively prevent the first motor 10 and the second motor 20 from electrical corrosion. The traditional conductive structure requires the arrangement of multiple conductive members 32 to achieve the grounding of the two motors. However, through this structure, the present application only needs to arrange one conductive structural member 30 to guide the current in the first motor shaft 11 and the second electrolytic shaft to the first shell 12 and / or the second shell 21, thereby reducing the number of conductive structures arranged. By arranging the conductive structural member 30 of the embodiment of the utility model, the volume of the electric drive system 100 can be reduced, making the electric drive system 100 compact, thereby facilitating the installation of the electric drive system 100, and at the same time, reducing the production cost of the electric drive system 100.

[0038] According to some embodiments of the present invention, referring to Figure 1 and Figure 2 The conductive structural member 30 includes an elastic member 33 , which is conductive and connected between the conductive base 31 and the conductive member 32 . The elastic member 33 always pushes the conductive member 32 to abut against the first motor shaft 11 or the second motor shaft.

[0039] In this way, the elastic member 33 can transfer the current in the conductive member 32 to the conductive base 31, so that the current in the first motor shaft 11 and the second motor shaft can be transferred to the first shell 12 and / or the second shell 21. In addition, the elastic member 33 always pushes the conductive member 32 to abut against the first motor shaft 11 or the second motor shaft, thereby ensuring that the current in the first motor shaft 11 and the second motor shaft can always be transferred to the first shell 12 and / or the second shell 21.

[0040] According to some optional embodiments of the present invention, referring to Figure 3 and Figure 4The conductive member 32 includes: a connecting plate 321 and a boss 322, wherein the boss 322 is disposed on the connecting plate 321, whereby the connecting plate 321 can provide a layout position for the boss 322, thereby facilitating the layout of the boss 322, and the boss 322 contacts the first motor shaft 11 or the second motor shaft, thereby enabling the current in the first motor shaft 11 and the second motor shaft to be transferred to the conductive member 32, thereby enabling the first motor shaft 11 and the second motor shaft to be grounded.

[0041] According to some optional embodiments of the present invention, referring to Figure 3 and Figure 4 The connecting plate 321 is arranged perpendicular to the axial direction of the first motor shaft 11, and a plurality of bosses 322 are provided on the connecting plate 321. That is, the connecting plate 321 may be provided with two, three, four or more bosses 322, and the plurality of bosses 322 are arranged at intervals along the circumference of the connecting plate 321. Thus, the plurality of bosses 322 can increase the connection points between the conductive member 32 and the first motor shaft 11 or the second motor shaft, thereby ensuring that the conductive member 32 is always electrically connected to the first motor shaft 11 and the second motor shaft. At the same time, the structural arrangement of the plurality of bosses 322 is reasonable, so that the plurality of bosses 322 can all be in contact with the first motor shaft 11 or the second motor shaft.

[0042] For example, Figure 3 and Figure 4 As shown, the connecting plate 321 is vertically arranged in the up-down direction, and a plurality of bosses 322 are provided on a side of the connecting plate 321 away from the conductive base 31 , and the plurality of bosses 322 extend toward the first motor shaft 11 or the second motor shaft.

[0043] According to some optional embodiments of the present invention, referring to Figure 3 and Figure 4 , the connecting plate 321 is circular, the number of bosses 322 is two, and the two bosses 322 are arranged at intervals along the radial direction of the connecting plate 321. Therefore, the two bosses 322 can adapt to the eccentric poor contact problem caused by the manufacturing tolerance of the first motor shaft 11 and the first housing 12 or the second motor shaft and the second housing 21, enhance the conductivity reliability, so that the conductive member 32 can always be electrically connected to the first motor shaft 11 or the second motor shaft. Preferably, the two bosses 322 are arranged at 180° intervals along the radial direction of the connecting plate 321.

[0044] According to some embodiments of the present invention, referring to Figure 3 and Figure 4At least one of the conductive member 32, the conductive base 31 and the elastic member 33 is a carbon ink member, that is, one, two or three of the conductive member 32, the conductive base 31 and the elastic member 33 may be carbon ink members. Therefore, the carbon ink member has good conductivity, so that the current of the first motor shaft 11 and the second motor shaft can be transmitted to the first housing 12 and / or the second housing 21 through the conductive structure 30.

[0045] According to some embodiments of the present invention, referring to Figure 3 and Figure 4 The conductive member 32 is formed with a first guide portion, and the conductive base 31 is formed with a second guide portion. The first guide portion and the second guide portion are guided and matched so that the conductive member 32 and the conductive base 31 can be slidably connected along the axial direction of the first motor shaft 11. Therefore, the conductive member 32 can slide relative to the conductive base 31. When the conductive member 32 is worn, the conductive member 32 is moved so that the conductive member 32 is always in contact with the first motor shaft 11 or the second motor shaft, so that the current in the first motor shaft 11 or the second motor shaft can always be transmitted to the first housing 12 and / or the second housing 21 through the conductive member 32.

[0046] For example, Figure 3 and Figure 4 As shown, a first guide portion is formed on the side of the conductive member 32 facing the conductive base 31 , and a second guide portion is formed in the conductive base 31 . The first guide portion can slide in the second guide portion, thereby enabling the conductive member 32 to slide relative to the conductive base 31 .

[0047] According to some optional embodiments of the present invention, referring to Figure 3 and Figure 4 One of the first guide portion and the second guide portion is formed as a guide column 323, and the other is formed as a guide hole 313. That is to say, the first guide portion can be formed as the guide column 323 and the second guide portion can be formed as the guide hole 313, or the second guide portion can be formed as the guide column 323 and the first guide portion can be formed as the guide hole 313. The guide hole 313 extends along the axial direction of the first motor shaft 11, and the guide column 323 extends into the guide hole 313 and can slide along the guide hole 313 in the axial direction of the first motor shaft 11.

[0048] In this way, the guiding cooperation between the guide column 323 and the guide hole 313 can solve the contact vibration problem between the boss 322 and the first motor shaft 11 or the second motor shaft, so that the boss 322 can stably contact the first motor shaft 11 or the second motor shaft. At the same time, the matching structure of the guide column 323 and the guide hole 313 is simple and easy to process, thereby saving the processing time of the first guide part and the second guide part and improving the processing efficiency.

[0049] For example, Figure 3 and Figure 4As shown, the first guide portion is formed as a guide column 323, which extends toward the guide hole 313 along the left-right direction, and the second guide portion is formed as a guide hole 313, which extends along the left-right direction, and the guide column 323 extends into the guide hole 313, and the guide column 323 can slide left and right in the guide hole 313.

[0050] According to some optional embodiments of the present invention, referring to Figure 3 and Figure 4 The conductive member 32 includes a connecting plate 321, and a guide column 323 is formed on the connecting plate 321 in the thickness direction (eg Figure 3 The guide post 323 is disposed on one side surface of the connecting plate 321 (in the left-right direction) and extends in a ring shape along the circumference of the first motor shaft 11, and the guide hole 313 is formed on the conductive base 31. Therefore, the guide post 323 is disposed on one side surface of the connecting plate 321, which can facilitate the cooperation between the guide post 323 and the guide hole 313. At the same time, the guide post 323 extends in a ring shape, which can ensure that the guide post 323 slides smoothly in the guide hole 313, and further, the conductive member 32 can slide smoothly relative to the conductive base 31.

[0051] For example, Figure 3 As shown, a guide column 323 is formed on one side surface of the connecting plate 321 facing the conductive base 31, and the guide column 323 extends toward the conductive base 31 in the left-right direction. On the connecting plate 321, the cross-section of the guide column 323 is formed into a circular ring shape, and the periphery of the guide hole 313 is formed into a circular ring shape, so that the radially outer surface of the guide column 323 contacts the inner wall surface of the guide hole 313, thereby preventing the conductive member 32 from shaking relative to the conductive base 31.

[0052] Furthermore, if Figure 3 and Figure 4 As shown, the elastic member 33 is a spring, one end of which is connected to the connecting plate 321 on the radial inner side of the guide column 323, and the other end of the spring is fixedly connected to the inner wall of the guide hole 313. Therefore, the spring has a simple structure, low cost, and is easy to process. At the same time, one end of the spring abuts against the inner wall of the guide hole 313 and the other end is connected to the connecting plate 321, and the spring can push the guide column 323 on the connecting plate 321 to slide in the guide hole 313.

[0053] For example, Figure 3 and Figure 4 As shown, the spring is arranged to extend in the left-right direction, one end of the spring facing the guide column 323 is connected to the connecting plate 321 , and one end of the spring facing the guide hole 313 is fixedly connected to the inner wall surface of the guide hole 313 .

[0054] According to some optional embodiments of the present invention, referring to Figure 3 and Figure 4The conductive base 31 includes: a base 311 and a partition 312. The base 311 is a hollow cylinder extending along the axis of the first motor shaft 11. The base 311 is fixed to the first shell 12 and / or the second shell 21. That is, the base 311 can be fixed to the first shell 12, the base 311 can also be fixed to the second shell 21, and the base 311 can also be fixed to the first shell 12 and the second shell 21. The partition 312 is arranged on the inner side of the base 311 and divides the space inside the base 311 into two guide holes 313.

[0055] In this way, the base 311 is fixed to the first shell 12 and / or the second shell 21, so that the conductive base 31 can be fixed to the first shell 12 and / or the second shell 21, and then the conductive structure 30 can be fixed to the first shell 12 and / or the second shell 21. At the same time, the guide hole 313 is formed in the base 311, and there is no need to set up an additional guide hole 313, so that the processing steps can be saved. In addition, the partition 312 divides the guide hole 313 into two, so that the guide column 323 of the two conductive members 32 can be conveniently guided and matched with the guide hole 313, so that the two conductive members 32 can slide relative to the conductive base 31.

[0056] For example, Figure 3 and Figure 4 As shown, the base 311 is arranged along the left-right direction, the partition 312 is vertically arranged in the center of the base 311, the upper and lower ends of the partition 312 are connected to the inner wall of the base 311, and the left and right sides of the partition 312 and the inner wall of the base 311 form a circular guide hole 313 extending along the left-right direction, and the guide column 323 slides in the guide hole 313 defined by the base 311 and the partition 312.

[0057] According to some optional embodiments of the present invention, referring to Figure 3 and Figure 4 The first shell 12 and / or the second shell 21 are formed with fixing holes, that is, the first shell 12 may be formed with a fixing hole, the second shell 21 may be formed with a fixing hole, or both the first shell 12 and the second shell 21 may be formed with fixing holes, and the base 311 is interference fit in the fixing hole.

[0058] In this way, the fixing hole can provide a fixing position for the base 311, so that the base 311 can be easily fixed in the fixing hole, thereby effectively preventing the base 311 from being separated from the first shell 12 and / or the second shell 21. Figure 2 As shown, a fixing hole is formed between the first shell 12 and the second shell 21, and the base 311 is fixed in the fixing hole.

[0059] According to the electric drive system 100 of the second embodiment of the utility model, refer to Figure 1 and Figure 2, including: a first motor 10, a second motor 20 and a conductive structural member 30 of the first aspect of this embodiment.

[0060] Specifically, the conductive structure 30 is arranged between the first motor 10 and the second motor 20, and the conductive structure 30 is electrically connected to the first motor shaft 11 and the second motor shaft. The conductive structure 30 is configured to electrically connect the first motor shaft 11 and the second motor shaft to the first shell 12 and / or the second shell 21. That is, the conductive structure 30 can be configured to electrically connect the first motor shaft 11 and the second motor shaft to the first shell 12, and the conductive structure 30 can also be configured to electrically connect the first motor shaft 11 and the second motor shaft to the second shell 21. The conductive structure 30 can also be configured to electrically connect the first motor shaft 11 and the second motor shaft to the first shell 12 and the second shell 21, so as to ground the first motor shaft 11 and the second motor shaft through the first shell 12 and / or the second shell 21.

[0061] For example, Figure 1 and Figure 2 As shown, the first motor shaft 11 is disposed in the first shell 12, the second motor shaft is disposed in the second shell 21, the first shell 12 and the second shell 21 are grounded, the conductive structure 30 is disposed between the first motor 10 and the second motor 20, the left end of the conductive structure 30 is electrically connected to the first motor shaft 11, the right end of the conductive structure 30 is electrically connected to the second motor shaft, the first motor shaft 11 is grounded through the first shell 12, and the second motor shaft is grounded through the second shell 21.

[0062] According to the electric drive system 100 of the embodiment of the utility model, by setting the conductive structure 30 of the above-mentioned first aspect embodiment, the conductive structure 30 is set between the first motor 10 and the second motor 20, and the current in the first motor shaft 11 and the second electrolytic shaft can be led out to the first housing 12 and / or the second housing 21, so that the problem of electrical corrosion of the first motor 10 and the second motor 20 can be solved. At the same time, the number of the conductive structure 30 can be reduced, the volume of the electric drive system 100 can be reduced, and the production cost of the electric drive system 100 can also be reduced. In addition, the two bosses can ensure that the bosses stably contact the first motor shaft 11 or the second motor shaft, and can also solve the contact vibration problem between the boss 322 and the first motor shaft 11 or the second motor shaft.

[0063] According to some embodiments of the present invention, referring to Figure 1 and Figure 2, the first motor shaft 11 and the second motor shaft both extend in the left-right direction of the vehicle 1000, and the first motor shaft 11 and the second motor shaft are arranged at intervals in the left-right direction of the vehicle 1000, and the conductive structure 30 is arranged between the first motor shaft 11 and the second motor shaft. Therefore, the first motor shaft 11 and the second motor shaft extend in the same direction, which can facilitate the electrical connection between the conductive structure 30 and the first motor shaft 11 and the second motor shaft, thereby reducing the connection length between the conductive structure 30 and the first motor shaft 11 and the second motor shaft, reducing the material used for the conductive structure 30, and reducing the production cost.

[0064] For example, Figure 1 and Figure 2 As shown, the first motor 10 and the second motor 20 are arranged at intervals in the left-right direction, the first motor 10 is arranged on the left side of the second motor 20, the first motor shaft 11 extends to the right in the left-right direction, the second motor shaft extends to the left in the left-right direction, and the conductive structure 30 is arranged between the first motor shaft 11 and the second motor shaft.

[0065] According to the second aspect of the present invention, the vehicle 1000 is Figure 1 and Figure 2 , including the electric drive system 100 of the first aspect of this embodiment.

[0066] According to the vehicle 1000 of the embodiment of the utility model, by setting the electric drive system 100 of the first embodiment of the above-mentioned first aspect, a conductive structure 30 is set between the first motor 10 and the second motor 20, and the current in the first motor shaft 11 and the second electrolytic shaft can be led out to the first housing 12 and / or the second housing 21, so that the problem of electrical corrosion of the first motor 10 and the second motor 20 can be solved. At the same time, the number of conductive structures 30 can be reduced, the volume of the electric drive system 100 can be reduced, and the production cost of the electric drive system 100 can also be reduced. In addition, the two bosses can ensure that the bosses stably contact the first motor shaft 11 or the second motor shaft, and can also solve the contact vibration problem between the boss 322 and the first motor shaft 11 or the second motor shaft.

[0067] Reference below Figure 1-Figure 4 A vehicle 1000 according to an embodiment of the present invention is described.

[0068] According to the vehicle 1000 of the embodiment of the present utility model, Figure 1As shown, the vehicle 1000 includes a wheel 200 and an electric drive system 100, and the electric drive system 100 drives the wheel 200 to rotate. The electric drive system 100 includes: a first motor 10, a second motor 20 and a conductive structure 30, the first motor 10 and the second motor 20 are arranged at intervals in the left-right direction, the first motor 10 is arranged on the left side of the second motor 20, a fixing hole is formed between the first motor 10 and the second motor 20, and the conductive structure 30 is interference-fitted in the fixing hole between the first motor 10 and the second motor 20.

[0069] The first motor 10 is provided with a first housing 12 and a first motor shaft 11, and the second motor 20 is provided with a second housing 21 and a second motor shaft. Both the first motor shaft 11 and the second motor shaft extend in the left-right direction, and the first motor shaft 11 and the second motor shaft are arranged at intervals in the left-right direction. The left end of the conductive structure 30 is electrically connected to the first motor shaft 11, and the right end of the conductive structure 30 is electrically connected to the second motor shaft.

[0070] The rest of the structures of the first motor 10 and the second motor 20 are the same. The first motor 10 and the second motor 20 are arranged symmetrically in the left and right directions. Taking the first motor 10 as an example, the first motor 10 also includes: an input shaft 13, a retaining spring 14, a first bearing 151, a second bearing 152, a third bearing 153, a resolver 17 limiting sleeve 16, a resolver 17 and a rotor 18. The input shaft 13 is arranged on the left side of the first motor shaft 11, the first bearing 151 is the input shaft bearing, a retaining spring 14 is arranged between the first bearing 151 and the input shaft 13, a second bearing 152 is arranged at the right end of the input shaft 13, the second bearing 152 is the front bearing of the first motor shaft 11, a resolver 17 is arranged on the left side of the first motor shaft 11, the resolver 17 limiting sleeve 16 is arranged on the left side of the resolver 17, the rotor 18 is arranged on the radial outer side of the first motor shaft 11, and a third bearing 153 is arranged at the right end of the first motor shaft 11, and the third bearing 153 is the rear bearing of the first motor shaft 11.

[0071] The conductive structure 30 includes: a conductive base 31, a conductive member 32 and an elastic member 33. Specifically, the conductive base 31 includes a base 311 and a partition 312. The base 311 is a hollow cylinder extending in the left-right direction. A second guide portion is formed in the base 311. The second guide portion is formed as a guide hole 313. The base 311 is interference-fitted with the fixing hole. The partition 312 is disposed inside the base 311. The partition 312 is arranged vertically. The partition 312 divides the space in the base 311 into two guide holes 313 extending in the left-right direction.

[0072] The conductive member 32 is arranged on the left and right sides of the conductive base 31. The conductive members 32 on both sides are arranged symmetrically in the left and right directions. The conductive member 32 includes: a connecting plate 321, a boss 322 and a guide column 323. Taking the conductive member 32 arranged on the left side of the conductive base 31 as an example, the connecting plate 321 is arranged vertically, and the connecting plate 321 is annular. Two bosses 322 are formed on the left side of the connecting plate 321. The two bosses 322 are arranged at intervals in the radial direction of the connecting plate 321. The boss 322 is arranged at intervals in the radial direction of the connecting plate 321. 22 protrudes to the left, the boss 322 contacts the first motor shaft 11, a first guide portion is provided on the right side of the connecting plate 321, the first guide portion is formed as a guide column 323, the guide column 323 extends to the right, the guide column 323 is formed in a ring shape on the connecting plate 321, the radial outer wall surface of the guide column 323 contacts the inner wall surface of the guide hole 313, the guide column 323 can slide in the guide hole 313, and the boss 322 of the conductive member 32 provided on the right side abuts against the second motor shaft.

[0073] The elastic member 33 is a spring, two of which are provided, one spring being provided in each guide hole 313, and the springs extending along the left-right direction. Taking the spring provided in the left guide hole 313 as an example, the left end of the spring is connected to the connecting plate 321 on the radial inner side of the guide column 323, and the right end of the spring is fixedly connected to the inner wall of the guide hole 313.

[0074] When the electric drive system 100 is running, the first motor 10 and the second motor 20 are running, and a large current is generated on the first motor shaft 11 and the second motor shaft. The current in the first motor shaft 11 is introduced into the conductive structure 30 through the boss 322 of the conductive member 32 on the left, and the current is transmitted to the first shell 12 through the conductive member 32, the spring and the conductive base 31 in sequence. The first shell 12 is grounded, so that the first motor shaft 11 is discharged, and thus the first motor shaft 11 can be effectively prevented from being corroded by electricity. The current in the second motor shaft is introduced into the conductive structure 30 through the boss 322 of the conductive member 32 on the right, and the current is transmitted to the first shell 12 through the conductive member 32, the spring and the conductive base 31 in sequence. The first shell 12 is grounded, so that the first motor shaft 11 is discharged, and thus the first motor shaft 11 can be effectively prevented from being corroded by electricity. Thus, the first motor shaft 11 and the second motor shaft can be grounded at the same time, and thus the first motor shaft 11 and the second motor shaft can be prevented from being corroded by electricity.

[0075] The wear law of the carbon rod is calculated through a single-body test, and the spring travel and spring force can ensure that the boss 322 is in effective contact with the first motor shaft 11 and the second motor shaft during the entire life cycle. In actual operation, due to manufacturing errors such as the coaxiality of the bearing holes of the first housing 12 and / or the second housing 21 and the end face runout of the first motor shaft 11 or the second motor shaft, the two bosses 322 with a phase angle of 180° can ensure that at least one boss 322 can contact the first motor shaft 11 or the second motor shaft. As the boss 322 in contact in the early stage wears out, the spring pushes the boss 322 to get close to the motor shaft, thereby achieving that the boss 322 is always electrically connected to the first motor shaft 11 or the second motor shaft.

[0076] The vehicle 1000 of this embodiment is provided with the electric drive system 100 of the first embodiment, and a conductive structure 30 is provided between the first motor 10 and the second motor 20, so that the current in the first motor shaft 11 and the second electrolytic shaft can be led out to the first housing 12 and / or the second housing 21, thereby solving the problem of electrical corrosion of the first motor 10 and the second motor 20, and at the same time, the number of the conductive structure 30 can be reduced, the volume of the electric drive system 100 can be reduced, and the production cost of the electric drive system 100 can also be reduced. In addition, the two bosses can ensure that the bosses stably contact the first motor shaft 11 or the second motor shaft, and can also solve the problem of contact vibration between the boss 322 and the first motor shaft 11 or the second motor shaft.

[0077] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0078] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0079] In the present invention, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", "fix" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, an electrical connection, or a communication; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0080] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0081] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A conductive structure for a vehicle, the vehicle comprising a first motor and a second motor, the first motor comprising a first housing and a first motor shaft, the second motor comprising a second housing and a second motor shaft, characterized in that: include: A conductive base, the conductive base is fixed to the first shell and / or the second shell; Conductive members, the number of the conductive members is two, and the two conductive members are electrically connected to the first motor shaft and the second motor shaft respectively, so that the first motor and / or the second motor are grounded.

2. The conductive structure according to claim 1, characterized in that: include: An elastic member, wherein the elastic member is conductive, the elastic member is connected between the conductive base and the conductive member, and the elastic member is used to push the conductive member to abut against the first motor shaft or the second motor shaft.

3. The conductive structure according to claim 1, characterized in that: The conductive member includes: a connecting plate and a boss, wherein the boss is arranged on the connecting plate, and the boss is in contact with the first motor shaft or the second motor shaft.

4. The conductive structure according to claim 3, characterized in that: The connecting plate is arranged perpendicular to the axial direction of the first motor shaft. A plurality of bosses are provided on the connecting plate. The plurality of bosses are arranged at intervals along the circumference of the connecting plate.

5. The conductive structure according to claim 4, characterized in that: The connecting plate is circular, the number of the bosses is two, and the two bosses are arranged at intervals along the radial direction of the connecting plate.

6. The conductive structure according to claim 2, characterized in that: At least one of the conductive member, the conductive base and the elastic member is a carbon ink member.

7. The conductive structure according to claim 1, characterized in that: The conductive member is formed with a first guide portion, and the conductive base is formed with a second guide portion. The first guide portion and the second guide portion are guided and matched so that the conductive member and the conductive base are slidably connected along the axial direction of the first motor shaft.

8. The conductive structure according to claim 7, characterized in that: One of the first guide portion and the second guide portion is formed as a guide column, and the other is formed as a guide hole, the guide hole extending along the axial direction of the first motor shaft, the guide column extending into the guide hole and being slidable along the guide hole in the axial direction of the first motor shaft.

9. The conductive structure according to claim 8, characterized in that: The conductive base includes: a base and a partition, the base is a hollow cylinder extending along the axis of the first motor shaft, the base is fixed to the first shell and / or the second shell, the partition is arranged on the inner side of the base and divides the space in the base into two guide holes.

10. An electric drive system, characterized in that: include: First motor; Second motor; According to any one of claims 1 to 9, the conductive structural member is arranged between the first motor and the second motor, and the conductive structural member is electrically connected to the first motor shaft and the second motor shaft, and the conductive structural member is configured to electrically connect the first motor shaft and the second motor shaft to the first shell and / or the second shell to ground the first motor shaft and the second motor shaft through the first shell and / or the second shell.

11. The electric drive system according to claim 10, characterized in that: The first motor shaft and the second motor shaft both extend in the left-right direction of the vehicle, and the first motor shaft and the second motor shaft are arranged at intervals in the left-right direction of the vehicle, and the conductive structure is arranged between the first motor shaft and the second motor shaft.

12. A vehicle, characterized in that: Comprising an electric drive system according to any one of claims 10-11.

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