Motor terminal block assembly, electric drive system and hybrid vehicle

Abstract

The application provides a motor terminal block assembly, an electric drive system and a hybrid vehicle. The motor terminal block assembly comprises: a terminal block body, wherein an installation portion is formed on the terminal block body; a first wiring assembly, wherein the first wiring assembly is installed on the installation portion and is used for being connected with a high-voltage electrical system; a second wiring assembly, wherein the second wiring assembly is installed on the installation portion and is used for being connected with the high-voltage electrical system; and a third wiring assembly, wherein the third wiring assembly is installed on the installation portion, is located between the first wiring assembly and the second wiring assembly and is used for being connected with a low-voltage electrical system; and wherein filter magnetic rings are respectively sleeved on the first wiring assembly and the second wiring assembly. The motor terminal block assembly integrates high-voltage and low-voltage plug-ins, filters harmonics through the filter magnetic rings, reduces the radiation interference of high-voltage signals on low-voltage signals, and places the low-voltage plug-ins in a shell to avoid the influence of low-voltage radiation current on electromagnetic compatibility level.

Description

Technical Field

[0001] This invention relates to the field of vehicle technology, and more specifically, to a motor terminal assembly, an electric drive system, and a hybrid vehicle. Background Technology

[0002] The electric drive system of a hybrid vehicle includes a high-voltage wiring section and a low-voltage wiring section. To avoid high and low voltage radiation, the high-voltage wiring terminal is generally placed inside the housing of the electric drive system, while the low-voltage wiring terminal is placed inside the outer casing of the electric drive system.

[0003] Placing the low-voltage terminal block on the housing requires a large number of wires and results in messy wiring, which is not conducive to the integrated design of the electric drive system and leads to a low level of integration. In addition, during signal transmission, the low-voltage wires will generate a low-voltage radiated magnetic field around the housing, which will affect the EMC (electromagnetic compatibility) test level of the electric drive system.

[0004] There is currently no effective solution to the above problems. Summary of the Invention

[0005] The main objective of this invention is to provide a motor terminal block assembly, an electric drive system, and a hybrid vehicle to solve the technical problems of low integration of the electric drive system and the influence of low-voltage radiated magnetic fields on the EMC test level of the electric drive system.

[0006] To achieve the above objectives, according to one aspect of the present invention, a motor terminal block assembly is provided, comprising: a terminal block body having a mounting portion formed thereon; a first wiring assembly mounted on the mounting portion and used for connection to a high-voltage electrical system; a second wiring assembly mounted on the mounting portion and used for connection to the high-voltage electrical system; and a third wiring assembly mounted on the mounting portion, located between the first and second wiring assemblies and used for connection to a low-voltage electrical system; wherein filter magnetic rings are respectively sleeved on the first and second wiring assemblies.

[0007] Furthermore, the mounting part is a boss structure formed on the terminal block body, and a sealing ring is sleeved around the mounting part. The sealing ring contains conductive fibers and is used to connect with the housing of the electric drive system.

[0008] Furthermore, the sealing ring has multiple annular lips spaced apart along its own axial direction, and each annular lip is provided with conductive fibers.

[0009] Furthermore, the mounting part includes: a first boss, which is formed on the upper surface of the terminal block body; a first wiring assembly, a second wiring assembly, and a third wiring assembly are all vertically mounted on the first boss; a first sealing ring is sleeved on the circumference of the first boss; and conductive fibers are provided inside the first sealing ring.

[0010] Furthermore, the mounting section also includes: a second boss, formed on the lower surface of the terminal block body, a first wiring assembly passing through the second boss, a second sealing ring sleeved around the second boss, and conductive fibers disposed within the second sealing ring; a third boss, formed on the lower surface of the terminal block body, a second wiring assembly passing through the third boss, a third sealing ring sleeved around the third boss, and conductive fibers disposed within the third sealing ring; and a fourth boss, formed on the lower surface of the terminal block body, located between the second and third bosses, a third wiring assembly passing through the fourth boss, a fourth sealing ring sleeved around the fourth boss, and conductive fibers disposed within the fourth sealing ring.

[0011] Furthermore, a fifth sealing ring is provided on the lower surface of the terminal block body. The fifth sealing ring surrounds the second boss, the third boss, and the fourth boss, and conductive fibers are provided inside the fifth sealing ring.

[0012] Furthermore, a metal plate is formed on the upper surface of the terminal block body, and the metal plate is arranged around the mounting part.

[0013] Furthermore, the terminal block body has mounting holes, and a metal bushing is formed inside the mounting holes.

[0014] According to another aspect of the present invention, an electric drive system is provided, including a motor terminal assembly, the motor terminal assembly being the aforementioned motor terminal assembly.

[0015] According to another aspect of the present invention, a hybrid vehicle is provided, including a motor terminal assembly, the motor terminal assembly being the aforementioned motor terminal assembly.

[0016] Applying the technical solution of this invention, the first wiring assembly, the second wiring assembly, and the third wiring assembly are all integrated on the terminal block body. The motor terminal block assembly integrates high and low voltage plugs, placing the motor terminal block assembly inside the housing. The filter magnetic ring can filter out harmonics during the transmission of high-voltage signals, reducing the radiation interference of high-voltage signals to low-voltage signals. The third wiring assembly is placed inside the housing, which simplifies the wiring harness routing and prevents the formation of a low-voltage radiating magnetic field outside the housing. Therefore, no low-voltage radiating current can be formed outside the housing, avoiding affecting the electromagnetic compatibility level of the electric drive system. Attached Figure Description

[0017] The accompanying drawings, which form part of this application, are used to provide a further understanding of the invention. The illustrative embodiments of the invention and their descriptions are used to explain the invention and do not constitute an undue limitation of the invention. In the drawings:

[0018] Figure 1 A schematic diagram of a first embodiment of the motor terminal assembly according to the present invention is shown;

[0019] Figure 2 A schematic diagram of a second embodiment of the motor terminal assembly according to the present invention is shown;

[0020] Figure 3 A schematic diagram of a third embodiment of the motor terminal assembly according to the present invention is shown;

[0021] Figure 4 A schematic diagram showing the connection relationship between the motor terminal assembly and the housing is shown;

[0022] Figure 5 A schematic diagram of an embodiment of the electric drive system according to the present invention is shown.

[0023] The above figures include the following reference numerals:

[0024] 10. Terminal block body; 11. First boss; 12. Second boss; 13. Third boss; 14. Fourth boss; 15. Metal plate; 16. Metal bushing;

[0025] 20. First wiring assembly; 21. First support frame;

[0026] 30. Second wiring assembly; 31. Second support frame;

[0027] 40. Third wiring assembly; 41. Third support frame; 42. First wiring port; 43. Second wiring port; 44. Third wiring port; 45. Fourth wiring port;

[0028] 50. Filter magnetic ring;

[0029] 60. First sealing ring; 61. Second sealing ring; 62. Third sealing ring; 63. Fourth sealing ring; 64. Fifth sealing ring;

[0030] 70. Drive motor stator assembly;

[0031] 80. Generator stator assembly;

[0032] 90. Inverter side-end signal connector;

[0033] 100. Shell; 101. Divider plate. Detailed Implementation

[0034] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0035] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0036] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such terms can be used interchangeably where appropriate so that the embodiments of this application described herein can be implemented, for example, in orders other than those illustrated or described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover a non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0037] Exemplary embodiments according to this application will now be described in more detail with reference to the accompanying drawings. However, these exemplary embodiments may be implemented in many different forms and should not be construed as being limited to the embodiments set forth herein. It should be understood that these embodiments are provided so that the disclosure of this application is thorough and complete, and that the concept of these exemplary embodiments is fully conveyed to those skilled in the art. In the drawings, for clarity, the thickness of layers and regions may be exaggerated, and the same reference numerals are used to denote the same devices, and therefore their description will be omitted.

[0038] Combination Figures 1 to 5 As shown, according to a specific embodiment of this application, a motor terminal block assembly is provided.

[0039] like Figure 1As shown, the motor terminal block assembly includes: a terminal block body 10, a first wiring assembly 20, a second wiring assembly 30, a third wiring assembly 40, and a filter magnetic ring 50. A mounting portion is formed on the terminal block body 10. The first wiring assembly 20 is mounted on the mounting portion and is used for connection to a high-voltage electrical system. The second wiring assembly 30 is mounted on the mounting portion and is used for connection to a high-voltage electrical system. The third wiring assembly 40 is mounted on the mounting portion and is located between the first wiring assembly 20 and the second wiring assembly 30. The third wiring assembly 40 is used for connection to a low-voltage electrical system. Filter magnetic rings 50 are respectively fitted onto the first wiring assembly 20 and the second wiring assembly 30.

[0040] It should be noted that the terminal block body 10 is an injection-molded plate structure. The first wiring assembly 20 and the second wiring assembly 30 are both high-voltage conductive busbars, which are integrated onto the mounting part of the terminal block body 10 through injection molding. The high-voltage conductive busbars consist of three spaced-apart conductive copper busbars, each of which is fitted with a filter magnetic ring 50. The third wiring assembly 40 is a PIN structure.

[0041] In the embodiments of this application, the first wiring assembly 20, the second wiring assembly 30, and the third wiring assembly 40 are all integrated on the terminal block body 10, forming a motor terminal block assembly. The motor terminal block assembly is placed inside the housing 100. The filter magnetic ring 50 can filter out harmonics during high-voltage signal transmission, reducing the radiation interference of high-voltage signals to low-voltage signals. The third wiring assembly 40 is placed inside the housing 100, simplifying wiring harness routing while preventing the formation of a low-voltage radiated magnetic field outside the housing 100. Therefore, no low-voltage radiated current can be formed outside the housing 100, avoiding impact on the electromagnetic compatibility level of the electric drive system.

[0042] The mounting section is a boss structure formed on the terminal block body 10. A sealing ring is fitted around the circumference of the mounting section, and conductive fibers are provided inside the sealing ring. The sealing ring is used to connect with the housing 100 of the electric drive system. The sealing ring allows the motor terminal block assembly to be sealed to the housing 100, achieving sealing of the oil cavity on the motor side or the dry cavity on the inverter side. During high-voltage signal transmission, a high-voltage radiated magnetic field is formed nearby, generating a radiated current. The conductive fibers inside the sealing ring can conduct the radiated current to the housing 100, and the housing 100 is grounded to achieve shielding, thereby reducing the influence of the high-voltage signal on the low-voltage signal.

[0043] Furthermore, the sealing ring has multiple annular lips spaced apart along its own axial direction, and each annular lip contains conductive fibers. The multiple annular lips not only improve the sealing performance between the motor terminal assembly and the housing 100, but also increase the number of conductive fibers, thereby enhancing the shielding effect against radiated current.

[0044] like Figure 2 As shown, the mounting portion includes a first boss 11, which is formed on the upper surface of the terminal block body 10. A first wiring assembly 20, a second wiring assembly 30, and a third wiring assembly 40 are all vertically mounted on the first boss 11. A first sealing ring 60 is fitted around the circumference of the first boss 11, and conductive fibers are disposed within the first sealing ring 60. Specifically, during the installation of the motor terminal block assembly, the first boss 11 faces the inverter side. The first boss 11 is sealed to the housing 100 via the first sealing ring 60, achieving a dry cavity seal on the inverter side. The first sealing ring 60 surrounds the first wiring assembly 20, the second wiring assembly 30, and the third wiring assembly 40, and the conductive fibers enable shielding against high and low voltage radiated currents.

[0045] It should be noted that the three conductive copper busbars in the first wiring assembly 20 are mounted on the first boss 11 via a first support frame 21. Specifically, the first support frame 21 vertically passes through the first boss 11, and three vertically arranged rectangular slots are formed on the first support frame 21. The three conductive copper busbars in the first wiring assembly 20 are respectively integrated into the corresponding rectangular slots through injection molding. The three conductive copper busbars in the second wiring assembly 30 are mounted on the first boss 11 via a second support frame 31. Specifically, the second support frame 31 vertically passes through the first boss 11, and three vertically arranged rectangular slots are formed on the second support frame 31. The three conductive copper busbars in the second wiring assembly 30 are respectively integrated into the corresponding rectangular slots through injection molding. The PIN pins in the third wiring assembly 40 are mounted on the first boss 11 via the third support frame 41. The third support frame 41 includes a first wiring port 42 formed on the first boss 11 and a second wiring port 43, a third wiring port 44, and a fourth wiring port 45 formed on the lower surface of the wiring base body 10. A partition is provided in the middle of the third support frame 41 to separate the first wiring port 42 from the second wiring port 43, the third wiring port 44, and the fourth wiring port 45. After passing through the first wiring port 42 and the partition, the multiple PIN pins enter the second wiring port 43, the third wiring port 44, and the fourth wiring port 45 respectively.

[0046] like Figure 1 , Figure 3As shown, the mounting section also includes a second boss 12, a third boss 13, and a fourth boss 14. The second boss 12 is formed on the lower surface of the terminal block body 10. A first wiring assembly 20 passes through the second boss 12. A second sealing ring 61 is fitted around the second boss 12, and conductive fibers are disposed within the second sealing ring 61. The third boss 13 is formed on the lower surface of the terminal block body 10. A second wiring assembly 30 passes through the third boss 13. A third sealing ring 62 is fitted around the third boss 13, and conductive fibers are disposed within the third sealing ring 62. The fourth boss 14 is formed on the lower surface of the terminal block body 10. The fourth boss 14 is located between the second boss 12 and the third boss 13. A third wiring assembly 40 passes through the fourth boss 14. A fourth sealing ring 63 is fitted around the fourth boss 14, and conductive fibers are disposed within the fourth sealing ring 63.

[0047] It should be noted that the second protrusion 12, the third protrusion 13, and the fourth protrusion 14 are all positioned opposite the first protrusion 11. The first wiring assembly 20 passes through the first protrusion 11 and the second protrusion 12, the second wiring assembly 30 passes through the first protrusion 11 and the third protrusion 13, and the third wiring assembly 40 passes through the first protrusion 11 and the fourth protrusion 14. The second protrusion 12, the third protrusion 13, and the fourth protrusion 14 are positioned towards the motor side and are sealed to the housing 100 via the second sealing ring 61, the third sealing ring 62, and the fourth sealing ring 63, thus achieving oil cavity sealing on the motor side. The conductive fibers of the second sealing ring 61, the third sealing ring 62, and the fourth sealing ring 63 further enhance the shielding effect against radiated current.

[0048] like Figure 3 As shown, a fifth sealing ring 64 is provided on the lower surface of the terminal block body 10. The fifth sealing ring 64 surrounds the second boss 12, the third boss 13, and the fourth boss 14, and conductive fibers are provided inside the fifth sealing ring 64. The fifth sealing ring 64 achieves a sealed connection with the housing 100, further enhancing the sealing effect of the oil cavity on the motor side. The conductive fibers in the fifth sealing ring 64 further enhance the shielding effect against radiated current.

[0049] like Figure 3 As shown, a metal plate 15 is formed on the upper surface of the terminal block body 10, and the metal plate 15 surrounds the mounting portion. A mounting hole is provided on the terminal block body 10, and a metal bushing 16 is formed within the mounting hole. The metal plate 15 and the metal bushing 16 further conduct radiated current to enhance the shielding effect.

[0050] According to another specific embodiment of the present invention, an electric drive system is provided, including a motor terminal assembly, which is the motor terminal assembly described in the above embodiments. Specifically, as Figure 4 , Figure 5As shown, the electric drive system includes: a housing 100 and a partition plate 101 located within the housing 100, a drive motor stator assembly 70, a generator stator assembly 80, and an inverter-side signal connector 90. The partition plate 101 divides the housing 100 into an inverter side and a motor side. The drive motor stator assembly 70 and the generator stator assembly 80 are located on the motor side, and the inverter-side signal connector 90 is located on the inverter side. The motor terminal assembly is mounted on the partition plate 101. The first wiring assembly 20 is electrically connected to the drive motor stator assembly 70, the second wiring assembly 30 is electrically connected to the generator stator assembly 80, and the drive motor resolver sensor signal connector, the generator resolver sensor signal connector, the drive motor temperature sensor signal connector, and the generator temperature sensor signal connector are all electrically connected to the third wiring assembly 40.

[0051] According to another specific embodiment of the present invention, a hybrid vehicle is provided, including a motor terminal assembly, which is the motor terminal assembly in the above embodiment.

[0052] As can be seen from the above description, the embodiments of the present invention achieve the following technical effects:

[0053] 1. The low-voltage connector is integrated into the motor terminal block assembly design, which takes into account both high and low voltage integration. At the same time, the radiation interference of high voltage to low voltage is considered. The influence of high voltage radiation on low voltage signal is reduced by filtering magnetic ring and grounding shield.

[0054] 2. The motor terminal block assembly enables internal low-voltage signal interconnection, optimizes electromagnetic compatibility requirements, reduces the impact of current testing in low-voltage conducted emissions, reduces external low-voltage wiring harnesses, and lowers costs.

[0055] 3. The motor side of the motor terminal block assembly is designed to seal the oil chamber, while the inverter side is designed to seal the dry chamber.

[0056] 4. The motor terminal block assembly integrates the transmission of temperature signals from the drive motor and generator, as well as resolver signals from the drive motor and generator.

[0057] For ease of description, spatial relative terms such as "above," "on top of," "on the upper surface of," "above," etc., are used herein to describe the spatial positional relationship of a device or feature as shown in the figures to other devices or features. It should be understood that spatial relative terms are intended to encompass different orientations in use or operation beyond the orientation of the device as described in the figures. For example, if the device in the figures were inverted, a device described as "above" or "on top of" other devices or structures would subsequently be positioned as "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below." The device may also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used herein will be interpreted accordingly.

[0058] In addition to the above, it should be noted that the terms "one embodiment," "another embodiment," and "embodiment" used in this specification refer to specific features, structures, or characteristics described in connection with that embodiment, which are included in at least one embodiment described in the general description of this application. The appearance of the same expression in multiple places in the specification does not necessarily refer to the same embodiment. Furthermore, when a specific feature, structure, or characteristic is described in connection with any embodiment, the intention is to suggest that implementing such a feature, structure, or characteristic in conjunction with other embodiments also falls within the scope of this invention.

[0059] In the above embodiments, the descriptions of each embodiment have different focuses. For parts not described in detail in a certain embodiment, please refer to the relevant descriptions in other embodiments.

[0060] The above description is merely a preferred embodiment of the present invention and is not intended to limit the invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A motor terminal block assembly, characterized in that, include: A terminal block body (10) having a mounting portion formed thereon; A first wiring assembly (20) is mounted on the mounting portion and is used to connect to a high-voltage electrical system; The second wiring assembly (30) is mounted on the mounting part and is used to connect to the high-voltage electrical system; A third wiring assembly (40) is mounted on the mounting part and is located between the first wiring assembly (20) and the second wiring assembly (30). The third wiring assembly (40) is used to connect to a low-voltage electrical system. Among them, the first wiring assembly (20) and the second wiring assembly (30) are respectively fitted with filter magnetic rings (50); The mounting part is a boss structure formed on the terminal block body (10). A sealing ring is sleeved on the circumferential direction of the mounting part. Conductive fibers are provided inside the sealing ring. The sealing ring is used to connect with the housing (100) of the electric drive system. The sealing ring has multiple annular lips spaced apart along its own axial direction, and each annular lip is provided with conductive fibers. The mounting part includes: a first boss (11), which is formed on the upper surface of the connector body (10). The first wiring assembly (20), the second wiring assembly (30), and the third wiring assembly (40) are all vertically mounted on the first boss (11). A first sealing ring (60) is sleeved on the circumference of the first boss (11), and conductive fibers are provided inside the first sealing ring (60). The PIN pin in the third wiring assembly (40) is mounted on the first boss (11) through a third support frame (41). The third support frame (41) encloses... The first connector (42) is formed on the first boss (11), and the second connector (43), the third connector (44), and the fourth connector (45) are formed on the lower surface of the connector body (10). A partition is provided in the middle of the third support frame (41). The partition separates the first connector (42) from the second connector (43), the third connector (44), and the fourth connector (45). Multiple pins pass through the first connector (42) and the partition in sequence, and then enter the second connector (43), the third connector (44), and the fourth connector (45) respectively.

2. The motor terminal assembly according to claim 1, characterized in that, The mounting unit also includes: The second boss (12) is formed on the lower surface of the terminal block body (10). The first wiring assembly (20) passes through the second boss (12). The second boss (12) is fitted with a second sealing ring (61) in the circumferential direction. The second sealing ring (61) contains conductive fibers. The third boss (13) is formed on the lower surface of the terminal block body (10), the second wiring assembly (30) passes through the third boss (13), and the third boss (13) is provided with a third sealing ring (62) in the circumferential direction, and the third sealing ring (62) is provided with conductive fibers. The fourth boss (14) is formed on the lower surface of the terminal block body (10). The fourth boss (14) is located between the second boss (12) and the third boss (13). The third wiring assembly (40) passes through the fourth boss (14). A fourth sealing ring (63) is sleeved on the circumference of the fourth boss (14). Conductive fibers are provided inside the fourth sealing ring (63).

3. The motor terminal assembly according to claim 2, characterized in that, A fifth sealing ring (64) is provided on the lower surface of the terminal block body (10). The fifth sealing ring (64) surrounds the second boss (12), the third boss (13) and the fourth boss (14). Conductive fibers are provided inside the fifth sealing ring (64).

4. The motor terminal assembly according to claim 1, characterized in that, A metal plate (15) is formed on the upper surface of the terminal block body (10), and the metal plate (15) is arranged around the mounting part.

5. The motor terminal assembly according to claim 1, characterized in that, The terminal block body (10) has an installation hole, and a metal bushing (16) is formed inside the installation hole.

6. An electric drive system, comprising a motor terminal block assembly, characterized in that, The motor terminal assembly is the motor terminal assembly according to any one of claims 1-5.

7. A hybrid vehicle, comprising a motor terminal assembly, characterized in that, The motor terminal assembly is the motor terminal assembly according to any one of claims 1-5.

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