Terminal block assembly, power drive apparatus, and vehicle

Abstract

The application relates to a terminal block assembly, a power driving device and a vehicle. The terminal block assembly comprises a first seat body, a second seat body and an electrical connection assembly. The first seat body is provided with a mounting groove penetrating through opposite sides of the first seat body. The second seat body is connected to the first seat body. The second seat body is provided with an electrical connector for connecting a high-voltage load. The electrical connection assembly is arranged in the mounting groove. The electrical connection assembly comprises a low-voltage connector and a sealing member. The low-voltage connector comprises a connector and a transmission line arranged in the connector. The connector is at least partially arranged in the mounting groove, so that two ends of the transmission line are respectively located on opposite sides of the first seat body. The sealing member is arranged between the connector and the inner wall of the mounting groove, so that the electrical connection assembly is sealingly connected to the first seat body. The terminal block assembly effectively improves the integrated design of the terminal block assembly, effectively reduces the volume of the terminal block assembly and improves the power density of the terminal block assembly.

Description

Technical Field

[0001] This application relates to the field of vehicle technology, and more specifically, to a terminal block assembly, a power drive device, and a vehicle. Background Technology

[0002] Electric vehicles are becoming increasingly widely used in the market. As the core component of electric vehicles, the performance improvement of electric drive systems will affect the development of electric vehicles. Therefore, new energy vehicles have increasingly higher requirements for the integration, low cost, miniaturization and high power density of electric drive systems.

[0003] However, in related technologies, connectors are mostly male-female connectors used for mating and have a large overall size, requiring large installation controls, which is not conducive to the integrated design of electric drive systems. Summary of the Invention

[0004] This application provides a terminal block assembly, a power drive device, and a vehicle.

[0005] According to a first aspect of this application, an embodiment of this application provides a terminal block assembly, including a first base body, a second base body, and an electrical connection component. The first base body is provided with a mounting groove extending through opposite sides of the first base body. The second base body is connected to the first base body and is provided with an electrical connector for connecting a high-voltage load. The electrical connection component passes through the mounting groove and includes a low-voltage connector and a seal. The low-voltage connector includes a connector and a transmission line passing through the connector. The connector is at least partially housed in the mounting groove, such that the two ends of the transmission line are located on opposite sides of the first base body. The seal is disposed between the connector and the inner wall of the mounting groove to seal the electrical connection component with the first base body.

[0006] According to a second aspect of this application, an embodiment of this application provides a power drive device, including a housing, a drive motor, an electronic control device, and the aforementioned terminal block assembly. The drive motor is disposed in the housing, the electronic control device is disposed in the housing, and the terminal block assembly is disposed in the housing and located between the drive motor and the electronic control device.

[0007] According to a third aspect of this application, an embodiment of this application provides a vehicle, including a vehicle body and the aforementioned power drive device, wherein the power drive device is installed in the vehicle body.

[0008] The terminal block assembly provided in this application includes a first base body, a second base body, and an electrical connection assembly. The first base body has a mounting groove extending through opposite sides of the first base body and used to accommodate a portion of the electrical connection assembly. The second base body is connected to the first base body and has an electrical connector for connecting a high-voltage load. The electrical connection assembly passes through the mounting groove and includes a low-voltage connector and a seal. The low-voltage connector is used to connect a low-voltage load of a vehicle. The seal is disposed between the connector and the inner wall of the mounting groove to seal the electrical connection assembly to the first base body. The low-voltage connector includes a connector and a transmission line. The connector is at least partially accommodated in the mounting groove. The transmission line passes through the connector, with its two ends located on opposite sides of the first base body. One end of the transmission line is connected to the low-voltage load, and the other end is connected to the adapter plate of the low-voltage load, allowing electrical signals to be transmitted between the two. The aforementioned terminal block assembly integrates the electrical connection components into the first housing, eliminating the need for additional low-pressure through-cylinder inserts and reserved installation space. This effectively improves the integrated design of the terminal block assembly, reducing its size and increasing its power density. Furthermore, the transmission line utilizes the housing of the power drive equipment to form effective shielding, reducing signal radiation and eliminating the need for additional shielding wires and magnetic rings, thus reducing the number of components and improving system integration. Moreover, the sealing between the electrical connection components and the first housing is ensured by a seal, eliminating the need for additional sealing structures on the connectors and reducing the cost of the terminal block assembly. Attached Figure Description

[0009] To more clearly illustrate the technical solution of this application, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0010] Figure 1 A schematic diagram of the vehicle structure provided in an embodiment of this application is shown.

[0011] Figure 2 It shows Figure 1 The diagram shows a cross-sectional view of the vehicle's power drive system.

[0012] Figure 3 This diagram illustrates the assembly structure of the terminal block assembly provided in an embodiment of this application.

[0013] Figure 4 It shows Figure 3 The diagram shows a partial exploded view of the terminal block assembly.

[0014] Figure 5 It shows Figure 3 The diagram shows a partial exploded perspective view of the terminal block assembly.

[0015] Figure 6 It shows Figure 5 The diagram shows a three-dimensional exploded view of the terminal block assembly from another perspective.

[0016] Figure 7 It shows Figure 3 A cross-sectional schematic diagram of a partial structure of the terminal block assembly shown.

[0017] Figure 8 It shows Figure 7 A partially enlarged schematic diagram of the terminal block assembly shown.

[0018] Figure 9 It shows Figure 8 The diagram shows a three-dimensional dissection of the terminal block assembly.

[0019] Figure 10 It shows Figure 9 A three-dimensional dissection diagram of the terminal block assembly from another perspective.

[0020] Figure 11 It shows Figure 10 The diagram shows a three-dimensional dissection of the electrical connection components and potting compound of the terminal block assembly.

[0021] Figure 12 It shows Figure 3 The diagram shown is an exploded perspective view of the low-voltage connector of the terminal block assembly, omitting the transmission line.

[0022] Figure 13 It shows Figure 3 The diagram shows the structure of the low-voltage connector of the terminal block assembly. Detailed Implementation

[0023] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are merely some embodiments of the present application, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present application without creative effort are within the scope of protection of the present application.

[0024] If certain terms are used in the specification and claims to refer to specific components, those skilled in the art will understand that hardware manufacturers may use different names to refer to the same component. The specification and claims do not distinguish components based on differences in name, but rather on differences in function. For example, the term "comprising" used throughout the specification and claims is an open-ended term and should be interpreted as "including but not limited to"; "generally" means that those skilled in the art can solve the technical problem and basically achieve the technical effect within a certain margin of error.

[0025] The test apparatus and vehicle proposed in this application will be further described below with reference to specific embodiments and accompanying drawings.

[0026] Please see Figure 1 and Figure 2 This application provides a terminal block assembly 100, which is applied in the power drive device 200 of a vehicle 300. The terminal block assembly 100 is used to realize the electrical connection between the electrical components of the power drive device 200. In this embodiment, the vehicle 300 may include a vehicle body 310 and a power drive device 200. The power drive device 200 is disposed in the vehicle body 310 and is used to output power to drive the vehicle 300 as a whole to move.

[0027] In this embodiment, the power drive device 200 may include a housing 210, a drive motor 230, an electronic control device 250, and the aforementioned terminal block assembly 100. The drive motor 230, electronic control device 250, and terminal block assembly 100 are all housed within the housing 210. The terminal block assembly 100 connects the drive motor 230 and the electronic control device 250, enabling the transmission of electrical signals and / or electrical energy between them. In this embodiment, the terminal block assembly 100 can be connected to the drive motor 230 and the electronic control device 250 via plug-in connection or wire harness connection. Further, the housing 210 is provided with a drive motor cavity 212 and an electronic control device cavity 214. The drive motor 230 is installed within the drive motor cavity 212, and the electronic control device 250 is installed within the electronic control device cavity 214. The terminal block assembly 100 is installed between the drive motor cavity 212 and the electronic control device cavity 214, ensuring a good seal between the drive motor cavity 212 and the electronic control device cavity 214.

[0028] In this application, unless otherwise expressly specified or limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or merely surface contact. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0029] Please see Figure 3 and Figure 4 The terminal block assembly 100 includes a first base 10, a second base 30, and an electrical connection assembly 50. The first base 10 has a mounting groove 12 that extends through opposite sides of the first base 10 and is used to accommodate a portion of the structure of the electrical connection assembly 50. The second base 30 is connected to the first base 10 and is used to connect the high-voltage load of the vehicle 300. In this embodiment, the second base 30 is provided with an electrical connector for connecting the high-voltage load, such as a high-voltage copper busbar. The high-voltage load of the vehicle 300 may include the aforementioned drive motor 230 (e.g., Figure 1 (As shown). An electrical connection assembly 50 passes through the mounting groove 12. The electrical connection assembly 50 includes a low-voltage connector 52 and a seal 54. The low-voltage connector 52 is used to connect the low-voltage load of the vehicle 300. In this embodiment, the low-voltage load of the vehicle 300 may include the controller of the aforementioned drive motor 230 and the electronic control device 250 (e.g., as shown). Figure 1 (As shown). A seal 54 is disposed between the connector 521 and the inner wall of the mounting groove 12 to seal the electrical connection assembly 50 to the first base 10. In this embodiment, the low-voltage connector 52 includes a connector 521 and a transmission line 523. The connector 521 is at least partially housed in the mounting groove 12. The transmission line 523 passes through the connector 521, and its two ends are located on opposite sides of the first base 10. One end of the transmission line 523 is connected to the drive motor 230, and the other end is connected to the electronic control device 250, so that electrical signals and / or electrical energy can be transmitted between the two.

[0030] It should be understood that "high voltage" in this embodiment should be understood as a high voltage range generally accepted in the art. For example, in the technical field of vehicle 300, the voltage of the high voltage load of vehicle 300 can be greater than or equal to 220V, such as 300V. "Low voltage" in this embodiment should be understood as a low voltage range generally accepted in the art. For example, in the technical field of vehicle 300, the voltage of the low voltage load of vehicle 300 can be less than or equal to 36V, such as 36V, 24V, 12V, etc.

[0031] The aforementioned terminal block assembly 100 integrates the electrical connection component 50 into the first housing 10, eliminating the need for additional low-pressure through-cylinder inserts and reserved installation space. This effectively improves the integrated design of the terminal block assembly 100, reducing its size and increasing its power density. Furthermore, the transmission line 523 utilizes the housing of the power drive device 200 to form effective shielding, reducing signal radiation and eliminating the need for additional shielding wires and magnetic rings, thus reducing the number of components in the terminal block assembly 100 and improving system integration. Moreover, the seal 54 ensures a tight seal between the electrical connection component 50 and the first housing 10, eliminating the need for an additional sealing structure for the connector 521 and reducing the cost of the terminal block assembly 100.

[0032] Please see Figure 5 and Figure 8 In this embodiment, the first base 10 further includes a base 14, and the mounting groove 12 is disposed on the base 14. The base 14 is generally block-shaped and can be made of insulating material. This application does not limit this. For example, the base 14 can be made of plastic material through injection molding. This plastic material has the characteristics of high temperature resistance, non-deformation, and acid and alkali corrosion resistance. The specific shape of the base 14 can be set according to the shape of the housing 210. For example, it can be a rectangular block, a trapezoidal block, an irregular polygonal block, etc. This embodiment does not limit the shape of the base 14.

[0033] In this embodiment, the first base 10 further includes a limiting portion 16, which is disposed within the mounting groove 12 and protrudes relative to the inner wall of the mounting groove 12. The limiting portion 16 is used to cooperate with a portion of the structure of the connector 521 to limit the installation position of the connector 521 relative to the first base 10. In this embodiment, the thickness of the limiting portion 16 can be 3.5 mm. Please refer to [link / reference]. Figure 9 and Figure 10 Furthermore, in order to increase the connection strength between the connector 521 and the first base 10, the limiting part 16 may include a limiting body 161, a first mating part 163, and a second mating part 165. The limiting body 161 is disposed in the mounting groove 12 and protrudes relative to the inner wall of the mounting groove 12. The first mating part 163 and the second mating part 165 are respectively disposed on opposite sides of the limiting body 161 and protrude relative to the limiting body 161. The first mating part 163 and the second mating part 165 cooperate with a portion of the structure of the connector 521 to limit the installation position of the connector 521 relative to the first base 10.

[0034] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0035] In this embodiment, the limiting portion 16 is recessed relative to the surface of the base 14 to form a receiving groove 121. The receiving groove 121 is located within the mounting groove 12 (i.e., as part of the mounting groove 12) and is used to store the sealing material of the terminal block assembly 100. In this embodiment, the depth of the receiving groove 121 can be 6 mm.

[0036] Please refer to it again. Figure 4 In this embodiment, one end of the second seat 30 is connected to the high-voltage mounting part 18, and the other end extends away from the first seat 10. One end of the second seat 30 is used to connect to the drive motor 230, and the other end is used to connect to the electronic control device 250 to transmit three-phase electrical signals. In this embodiment, the second seat 30 and the first seat 10 are integrally formed. For example, the first seat 10 and the second seat 30 can be made of the same material and are injection molded, pressed, or die-cast. Alternatively, the first seat 10 and the second seat 30 can be made of different materials and are injection molded or die-cast using a two-color molding process. In other embodiments, the second seat 30 and the first seat 10 can be assembled. For example, the first seat 10 and the second seat 30 are independent molded components, and they are assembled and connected by screws or other connectors. Further, the second seat 30 is generally strip-shaped and can be a three-phase busbar. The three-phase busbar can be made of copper or aluminum, which has good conductivity. Furthermore, the second base 30 includes a body 32 and a copper busbar 34. The body 32 is connected to the high-voltage mounting part 18. One end of the copper busbar 34 is connected to the body 32, and the other end extends away from the body 32. The copper busbar 32 is provided with a plurality of rivet nuts, which are fastened to the electronic control device 250 by bolts. The second base 30 is connected to the electronic control device 250 through the copper busbar 34 to transmit electrical signals.

[0037] In the description of this application, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "inside", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the purpose of simplifying the description of this application and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0038] Please see Figure 11 and Figure 12 In this embodiment, the connector 521 includes a support portion 5211, which is generally block-shaped and mainly used to support the connection structure of the transmission line 523. The support portion 5211 is disposed in the mounting groove 12 and is located on the side of the limiting portion 16 away from the receiving groove 121.

[0039] Furthermore, the support portion 5211 is also provided with a first mounting hole 5217, through which the transmission line 523 passes. In this embodiment, the first mounting hole 5217 is a stepped through-hole structure, which extends through the opposite sides of the support portion 5211. Specifically, the first mounting hole 5217 has two circular holes with different diameters on the same axis. The larger diameter circular hole is called the large circular hole 5216, and the smaller diameter circular hole is called the small circular hole 5218. The distance between the large circular hole 5216 and the first base 10 is less than the distance between the small circular hole 5218 and the first base 10. The connection position of the large circular hole 5216 and the small circular hole 5218 forms a first stop portion 5219. The first stop portion 5219 protrudes relative to the inner wall of the first mounting hole 5217 and is used to cooperate with the transmission line 523 to limit the installation position of the transmission line 523 relative to the connector 521. In this embodiment, the number of first mounting holes 5217 is not limited. In this embodiment, there can be eight first mounting holes 5217, which are arranged side by side in sequence on the support portion 5211. In some embodiments, the support portion 5211 may also be provided with reserved holes 5210, which can be used to extend signals. In this embodiment, the reserved holes 5210 are provided on the side of the support portion 5211 near the first base 10. There can be four reserved holes 5210, which are arranged side by side in sequence on the support portion 5211. Further, the reserved holes 5210 can be blind holes, which can meet the needs of sealing and extending signals. The thickness of the material of the support portion 5211 at the reserved hole 5210 is less than the thickness of other parts, so that the reserved hole 5210 can be directly cleared when extending signals later.

[0040] The connector 521 also includes a first retaining part 5213 and a second retaining part 5215 connected to the support part 5211 (e.g., Figure 5As shown, the first retaining portion 5213 and the second retaining portion 5215 are respectively disposed on opposite sides of the support portion 5211 and protrude relative to the support portion 5211. The first retaining portion 5213 and the second retaining portion 5215 are respectively engaged with the side of the limiting portion 16 away from the support portion 5211 to limit the installation position of the connector 521 relative to the first base 10. Specifically, the first retaining portion 5213 is generally a hook structure, which has a certain elastic deformation capability, and is disposed opposite to the first mating portion 163, and the first retaining portion 5213 is snapped into the first mating portion 163. The second retaining portion 5215 is generally a hook structure, which has a certain elastic deformation capability, and is disposed opposite to the second mating portion 165, and the second retaining portion 5215 is snapped into the second mating portion 165 to limit the installation position of the connector 521 relative to the first base 10. Furthermore, the first holding part 5213 and the second holding part 5215 can ensure that the transmission line 523 is connected to the connector 521 at a position away from the second base 30, which is beneficial to enhance the anti-interference capability of the transmission line 523.

[0041] Please see Figure 13 In this embodiment, the transmission line 523 includes a terminal 525, a first wire harness 527, and a second wire harness 529. The terminal 525 passes through the first mounting hole 521 of the support portion 5211. In this embodiment, to accommodate the number of first mounting holes 5217, the number of terminals 525 is also eight, with each of the eight terminals 525 passing through one of the eight first mounting holes 5217. The terminal 525 is generally cylindrical and includes a body 5255 and a second stop portion 5251. In this embodiment, the body 5255 is a solid cylinder used to connect the first wire harness 527 and the second wire harness 529. The second stop portion 5251 protrudes from the outer peripheral wall of the body 5255 and abuts against the first stop portion 5219 to limit the mounting position of the terminal 525 relative to the connector 521. Furthermore, the terminal 525 also includes a guide portion 5253, which protrudes from the outer peripheral wall of the main body 5255. The distance between the guide portion 5253 and the first seat 10 is greater than the distance between the second stop portion 5251 and the first seat 10. In this embodiment, the guide portion 5253 is generally conical and is used to define the installation direction of the terminal 525. Furthermore, the guide portion 5253 is interference-fitted with the small round hole 5218 to fix the terminal 525 relative to the connector 521 and prevent the terminal 525 from moving axially.

[0042] Terminal 525 also includes a first connecting portion 5257 and a second connecting portion 5259. The first mounting portion 5257 and the second connecting portion 5259 are respectively disposed on opposite sides of the main body 5255. The first connecting portion 5257 and the second connecting portion 5259 can be crimping holes. The first connecting portion 5257 is connected to the first wire harness 527 by crimping process, and the second connecting portion 5259 is connected to the second wire harness 529 by crimping process.

[0043] One end of the first wire harness 527 is provided with a first interface 5271, which is crimped to a first connecting part 5257. The other end of the first wire harness 527 is provided with a first connector 5273, which is used to connect to the electronic control device 250. In this embodiment, the first connector 5273 can be a 10-pin connector. One end of the second wire harness 529 is provided with a second interface 5291, which is crimped to a second connecting part 5259. The other end of the second wire harness 529 is provided with a second connector 5293 and a third connector 5295, which are used to connect to the drive motor 230. In this embodiment, the second connector 5293 can be a 4-pin motor thermistor connector, and the third connector 5295 can be a 7-pin resolver connector. The first wiring harness 527 and the second wiring harness 529 can form an effective shield using the housing of the power drive device 200, which helps to reduce the radiation of resolver signals and NCT signals. No additional shielding wires and magnetic rings are required, which effectively reduces the number of components in the terminal block assembly 100 and improves the system integration.

[0044] Furthermore, in actual operation, the first wire harness 527 and the second wire harness 529 may be long and numerous. In order to prevent them from becoming tangled, the transmission line 523 may also include a wire harness 528. There may be two wire harnesses 528. The first wire harness 527 and the second wire harness 529 are respectively passed through the two wire harnesses 528. The wire harnesses 528 are used to fix the first wire harness 527 and the second wire harness 529.

[0045] Please refer to it again. Figure 12 In this embodiment, the sealing member 54 surrounds the outer periphery of the support portion 5211 and elastically abuts against the outer peripheral wall of the support portion 5211 and the inner wall of the mounting groove 12. The sealing member 54 can seal the connector 521, the transmission line 523 and the first base 10, so that the connector 521 does not require an additional sealing structure, which can reduce the cost of the terminal block assembly 100. The sealing member 54 includes a bottom wall 541 and a surrounding portion 543 connected to the bottom wall 541. The surrounding portion 543 is stacked on the side of the limiting portion 16 facing the support portion 5211, and the support portion 5211 is disposed in the surrounding portion 543 and stacked on the bottom wall 541.

[0046] In this embodiment, the transmission line 523 passes through the bottom wall 541 and the support portion 5211. Specifically, the bottom wall 541 is provided with a second mounting hole 545, which corresponds to the first mounting hole 5217 and is substantially coaxial with the first mounting hole 5217. In this embodiment, to accommodate the number of first mounting holes 5217, the number of second mounting holes 545 is also eight, with each of the eight second mounting holes 545 corresponding to one of the eight first mounting holes 5211. The terminal 525 passes through the first mounting hole 5211 and the second mounting hole 545 in sequence, and the body 5255 of the terminal 525 is press-fitted with the second mounting hole 545 to ensure the sealing effect of the terminal 525.

[0047] The bottom wall is also provided with a first mating hole 547 and a second mating hole 549. The first mating hole 547 and the second mating hole 549 are respectively disposed on opposite sides of the bottom wall 541. The first holding part 5213 is interference-fitted with the first mating hole 547 and held in place by the limiting part 16. The second holding part 5215 is interference-fitted with the second mating hole 549 and held in place by the limiting part 16. In the embodiment of this application, the first mating hole 547 is disposed opposite to the first mating part 163, and the second mating hole 549 is disposed opposite to the second mating part 165. The first holding part 5213 is interference-fitted with the first mating hole 547 and held in place by the first mating part 163, and the second holding part 5215 is interference-fitted with the second mating hole 549 and held in place by the second mating part 165.

[0048] The surrounding portion 543 surrounds the periphery of the bottom wall 541 and protrudes relative to the bottom wall 541, together forming a sealed space 542. The sealed space 542 is used to install the support portion 5211 of the connector 521. Further, the surrounding portion 543 includes an inner surface 5431 and an outer surface 5433. The inner surface 5431 is disposed on the side of the surrounding portion 543 near the connector 521, and the inner surface 5431 is press-fitted with the support portion 5211 to ensure the sealing effect between the connector 521 and the seal 54. The outer surface 5433 is disposed on the side of the surrounding portion 543 near the inner wall of the mounting groove 12. In this embodiment, the outer surface 5433 can be a sealing lip. The inner surface 5431 and the outer surface 5433 are compressed by the mounting groove 12 and the support portion 5211 to ensure the sealing effect between the connector 521 and the first seat 10.

[0049] In this embodiment, the terminal block assembly 100 can use a potting process and a sealant 54 to achieve a double seal between the first base 10 and the electrical connection assembly 50. In this embodiment, the material of the adhesive used for "potting" is not limited; for example, the adhesive material can be polyurethane, silicone, hot melt adhesive, potting compound, UV adhesive, AB adhesive, etc. In this embodiment, the adhesive can be a potting compound. For more details, please refer again... Figure 5The terminal block assembly 100 also includes potting compound 70, which is disposed within the receiving groove 121, through which the transmission line 523 passes. The potting compound 70 can cure at room temperature or under heating conditions to become a high-performance thermosetting polymer insulating material, forming a double-layer seal with the sealing element 54, thus enhancing the sealing effect of the terminal block assembly 100. During manufacturing, the electrical connection component 50 is placed in the mounting groove 12, and the receiving groove 121 is filled with potting compound 70 until it is completely filled. This full-cavity potting compound 70 displaces air and gaps within the receiving groove 121, ensuring a reliable connection between the electrical connection component 50 and the first base body 10. This prevents contamination at the connection point between the electrical connection component 50 and the first base body 10, and also prevents leakage of oil and gas from the motor cavity into the electrical control cavity due to siphoning.

[0050] Please refer to it again. Figure 4 In this embodiment, the terminal block assembly 100 further includes a first sealing ring 80 and a second sealing ring 90. The first sealing ring 80 is disposed around the high-voltage mounting portion 18. For example, the first sealing ring 80 may surround the outer side of one side of the high-voltage mounting portion 18 and be located between the high-voltage mounting portion 18 and the second seat 30, or it may surround the outer periphery of the high-voltage mounting portion 18 and be located between the high-voltage mounting portion 18 and the second seat 30, so as to achieve a sealed connection between the drive motor cavity 212 and the second seat of the electronic control device cavity 214. The second sealing ring 90 is disposed around the outer side of the mounting groove 12 near the connector 521. For example, the second sealing ring 90 may surround the outer side of the mounting groove 12 near the connector 521 and be located between the mounting groove 12 and the connector 521, or it may surround the outer periphery of the mounting groove 12 near the connector 521 and be located between the mounting groove 12 and the connector 521, so as to achieve a sealed connection between the drive motor cavity 212 and the electronic control device cavity 214.

[0051] The terminal block assembly provided in this application includes a first base body, a second base body, and an electrical connection component. The first base body has a mounting groove extending through opposite sides of the first base body to accommodate a portion of the electrical connection component. The second base body is connected to the first base body and has an electrical connector for connecting a high-voltage load. The electrical connection component passes through the mounting groove and includes a low-voltage connector and a seal. The low-voltage connector is used to connect a low-voltage load of the vehicle. The seal is disposed between the connector and the inner wall of the mounting groove to seal the electrical connection component to the first base body. The low-voltage connector includes a connector and a transmission line. The connector is at least partially accommodated in the mounting groove. The transmission line passes through the connector, with its two ends located on opposite sides of the first base body. One end of the transmission line is connected to the low-voltage load, and the other end is connected to the adapter plate of the low-voltage load, allowing electrical signals to be transmitted between the two. The aforementioned terminal block assembly integrates the electrical connection components into the first housing, eliminating the need for additional low-pressure through-cylinder inserts and reserved installation space. This effectively improves the integrated design of the terminal block assembly, reducing its size and increasing its power density. Furthermore, the transmission line utilizes the housing of the power drive equipment to form effective shielding, reducing signal radiation and eliminating the need for additional shielding wires and magnetic rings, thus reducing the number of components and improving system integration. Moreover, the sealing between the electrical connection components and the first housing is ensured by a seal, eliminating the need for additional sealing structures on the connectors and reducing the cost of the terminal block assembly.

[0052] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do 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 one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0053] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this application.

Claims

1. A terminal block assembly, characterized in that, The terminal assembly includes: The first base body is provided with a mounting groove, which extends through the opposite sides of the first base body; A second base body, connected to the first base body, is provided with an electrical connector for connecting a high-voltage load; and An electrical connection assembly, disposed within the mounting groove, the electrical connection assembly comprising: A low-voltage connector, comprising a connector and a transmission line passing through the connector, the connector comprising a support portion, a first retaining portion, and a second retaining portion, the support portion being located in the mounting groove such that the two ends of the transmission line are respectively located on opposite sides of a first base, the first retaining portion and the second retaining portion being connected to the support portion and respectively retaining the first base on the side away from the support portion; and A sealing element is disposed between the connector and the inner wall of the mounting groove to seal the electrical connection assembly with the first base body. The sealing element includes a bottom wall and is provided with a first mating hole and a second mating hole. The first mating hole and the second mating hole are respectively disposed on opposite sides of the bottom wall. A first retaining portion passes through the first mating hole and is press-fitted with the first mating hole, and a second retaining portion passes through the second mating hole and is press-fitted with the second mating hole.

2. The terminal block assembly as described in claim 1, characterized in that, The transmission line passes through the support portion, and the sealing member surrounds the outer periphery of the support portion and elastically abuts against the outer peripheral wall of the support portion and the inner wall of the mounting groove.

3. The terminal block assembly as described in claim 2, characterized in that, The first seat includes a seat portion and a limiting portion. The mounting groove is disposed in the seat portion, the limiting portion is disposed in the mounting groove and protrudes relative to the inner wall of the mounting groove, the supporting portion is located on one side of the limiting portion, and the first holding portion and the second holding portion are respectively holding the limiting portion on the side away from the supporting portion.

4. The terminal block assembly as described in claim 3, characterized in that, The terminal block assembly also includes potting compound, the limiting portion is recessed relative to the surface of the base portion to form a receiving groove, the potting compound is disposed in the receiving groove, and the transmission line passes through the potting compound.

5. The terminal block assembly as described in claim 3, characterized in that, The sealing element includes a surrounding portion connected to the bottom wall, the surrounding portion being stacked on the side of the limiting portion facing the support portion, the support portion being disposed within the surrounding portion and stacked on the bottom wall; the transmission line passes through the bottom wall and the support portion.

6. The terminal block assembly as described in claim 5, characterized in that, The surrounding portion abuts against one side of the limiting portion.

7. The terminal block assembly as described in claim 5, characterized in that, The transmission line includes a terminal, a first wire harness, and a second wire harness, the first wire harness and the second wire harness being respectively connected to opposite ends of the terminal; the support portion is provided with a first mounting hole, the bottom wall is provided with a second mounting hole corresponding to and communicating with the first mounting hole, the terminal passes through the first mounting hole and the second mounting hole, and is interference-fitted with the hole wall of the second mounting hole.

8. The terminal block assembly as described in claim 7, characterized in that, The first mounting hole is provided with a first stop portion, and the outer peripheral wall of the terminal is provided with a second stop portion. The second stop portion abuts against the first stop portion to limit the installation position of the terminal relative to the connector.

9. The terminal assembly as described in any one of claims 1 to 8, characterized in that, The first base body is further provided with a high-voltage mounting part, and the second base body is connected to the high-voltage mounting part. The first base body and the second base body are integrally formed connection structures. The terminal block assembly also includes a first sealing ring and a second sealing ring. The first sealing ring is disposed around the high-voltage mounting part, and the second sealing ring is disposed around the outer periphery of the mounting groove.

10. A power drive device, characterized in that, include: Box; A drive motor is installed inside the housing; An electronic control device is installed inside the enclosure; as well as, The terminal block assembly according to any one of claims 1 to 9, wherein the terminal block assembly is disposed in the housing and located between the drive motor and the electronic control device.

11. A vehicle, characterized in that, include: The vehicle body; and the power drive device of claim 10, wherein the power drive device is installed in the vehicle body.

Images