Three-phase connection structure and motor controller
By arranging threading holes on the mounting base of the motor cooling system and sealing the conductor part, the problem of oil penetrating into the dry cavity is solved, and the effect of delaying the aging of electronic components and reducing the risk of component short circuits is achieved.
Patent Information
- Application Number
- CN202420248473.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-02-01
- Publication Date
- 2025-01-21
- Estimated Expiration
- 2034-02-01
AI Technical Summary
In existing motor cooling systems, oil permeates from the oil cavity to the dry cavity, resulting in serious risks such as accelerated aging of electronic devices, short circuits of components and loss of power.
Design a three-phase connection structure, including opening a threading hole in the mounting base, and sealing the exposed conductor part in the threading hole to prevent oil leakage.
It effectively prevents oil penetration, delays the aging process of electronic devices, reduces the risk of component short circuits, and ensures long-term stable operation of the product.
Smart Images
Figure CN222380875U_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the field of controller technology, and in particular to a three-phase connection structure and a motor controller. Background Art
[0002] Electric vehicles are an important trend in today's new energy vehicles. With the popularity of electric vehicles, the drive motor is one of the core components, and its stability and efficiency are crucial to the performance of the entire vehicle. The heat generated by the electric vehicle drive motor during operation mainly comes from the resistance loss inside the motor and the energy loss of the magnet. With the increase in motor power, the heat source problem has become increasingly prominent. In order to ensure the efficient operation of the motor, the design of the cooling system is particularly critical. At present, the cooling methods of the motor mainly include air cooling, water cooling and oil cooling. Among them, the integrated oil-cooled electric drive system is becoming more and more widely used due to its compact structure, low cost and high cooling efficiency.
[0003] However, since the motor cavity is an oil cavity and the controller cavity is a dry cavity, the cooling oil will penetrate into the controller cavity through the gap between the wiring harness and the wire trough. Long-term use of the electronic devices inside the cavity in an oil and gas environment will cause accelerated aging of the product, causing component short circuits, and leading to serious risks such as power loss. Utility Model Content
[0004] The purpose of the present application is to provide a three-phase connection structure and a motor controller to address the deficiencies in the above-mentioned prior art, by providing a threading hole in the mounting seat and sealing the exposed conductor part through the threading hole to solve the problem of oil infiltration from the oil cavity to the dry cavity in the prior art.
[0005] To achieve the above purpose, the technical solution adopted in the embodiment of the present application is as follows:
[0006] One aspect of an embodiment of the present application provides a three-phase connection structure, including a mounting seat, a three-phase connection assembly mounted on the mounting seat, and a wire passing through the mounting seat, wherein a wire threading hole is opened in the mounting seat, the wire has an exposed conductor portion, and the conductor portion is sealed and passed through the wire threading hole.
[0007] Optionally, a first sealing body surrounding the conductor part is filled in the threading hole to ensure a sealed connection between the threading hole and the conductor part.
[0008] Optionally, the length of the conductor portion is greater than the length of the threading hole.
[0009] Optionally, the three-phase connection structure also includes a three-phase Hall component, the three-phase Hall component and the three-phase connection component are embedded in the mounting base, the three-phase connection component has a first terminal group and a second terminal group extending outward from the mounting base, and the three-phase Hall component is arranged corresponding to the first terminal group.
[0010] Optionally, a sealing groove built into the mounting seat is provided in the second terminal group, and a second sealing body is filled in the sealing groove to seal the second terminal group and the mounting seat.
[0011] Optionally, the first terminal group includes a first U-phase terminal, a first V-phase terminal and a first W-phase terminal arranged along a first direction, and the second terminal group includes a second U-phase terminal, a second V-phase terminal and a second W-phase terminal arranged along a second direction perpendicular to the first direction.
[0012] Optionally, the three-phase connection component includes a U-phase connection component, a V-phase connection component and a W-phase connection component, and the mounting base includes three independent mounting channels, which are used to install the U-phase connection component, the V-phase connection component and the W-phase connection component respectively.
[0013] Optionally, the three-phase connection assembly is installed on the mounting seat by insert injection molding.
[0014] Another aspect of an embodiment of the present application provides a motor controller, including a shell and any one of the above-mentioned three-phase connection structures, wherein an opening is provided in the shell, a mounting seat of the three-phase connection structure covers the opening, the shell has an inner cavity, and one end of the wire of the three-phase connection structure is located in the inner cavity.
[0015] Optionally, a sealing ring for sealing the opening is provided between the housing and the mounting seat.
[0016] The beneficial effects of this application include:
[0017] The present application provides a three-phase connection structure and a motor controller, including a mounting seat, a three-phase connection component mounted on the mounting seat, and a wire inserted through the mounting seat. A threading hole is provided on the mounting seat, and the wire has an exposed conductor portion, and the conductor portion is sealed and inserted through the threading hole. The present application provides a solid support platform by using the mounting seat as a basis for installing the three-phase connection component and inserting the wire, ensuring the stability of the three-phase connection structure, and realizing the electrical connection between the motor and the motor controller through the three-phase connection component. The threading hole is cleverly arranged on the mounting seat, creating a convenient channel for the installation of the wire. As an important part of the three-phase connection structure, the conductor portion of the wire is exposed and sealed and inserted through the threading hole. This clever design not only ensures the conductive efficiency of the wire, but also effectively prevents the possibility of oil leakage. The exposed conductor portion is sealed to form an effective barrier, which prevents the oil from penetrating into the dry cavity through capillary action on the one hand, and prevents the oil from leaking into the dry cavity from the junction of the conductor portion and the wire groove on the other hand.
[0018] In general, the three-phase connection structure of the present application can not only prevent the penetration of oil and slow down the aging process of electronic devices, but also effectively reduce the risk of component short circuit, ultimately ensuring the long-term stable operation of the product, reducing the possibility of serious risks such as power loss, and providing effective technical guarantee for the reliable connection between the motor and the motor controller. BRIEF DESCRIPTION OF THE DRAWINGS
[0019] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.
[0020] Figure 1 A schematic diagram of a three-phase connection structure provided in an embodiment of the present application;
[0021] Figure 2 This is one of the exploded schematic diagrams of a three-phase connection structure provided in an embodiment of the present application;
[0022] Figure 3 The second exploded schematic diagram of a three-phase connection structure provided in an embodiment of the present application.
[0023] Icons: 100-mounting base; 110-threading hole; 200-three-phase connection assembly; 210-first terminal group; 211-first U-phase terminal; 212-first V-phase terminal; 213-first W-phase terminal; 220-second terminal group; 221-second U-phase terminal; 222-second V-phase terminal; 223-second W-phase terminal; 224-sealing groove; 300-wire; 400-three-phase Hall assembly. DETAILED DESCRIPTION
[0024] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. The components of the embodiments of the present application described and shown in the drawings here can be arranged and designed in various different configurations.
[0025] Therefore, the following detailed description of the embodiments of the present application provided in the accompanying drawings is not intended to limit the scope of the present application for protection, but merely represents selected embodiments of the present application. It should be noted that, in the absence of conflict, the various features in the embodiments of the present application can be combined with each other, and the combined embodiments are still within the scope of protection of the present application.
[0026] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.
[0027] In the description of the present application, it should be noted that the terms "upper", "lower", "top", "bottom", "vertical", "horizontal", "inside", "outside", etc. indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, or the positions or positional relationships in which the product of the application is usually placed when in use. They are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific position, be constructed and operated in a specific position, and therefore cannot be understood as a limitation on the present application. In addition, the terms "first", "second", "third", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.
[0028] In addition, the terms "horizontal", "vertical" and the like do not mean that the components are required to be absolutely horizontal or suspended, but can be slightly tilted. For example, "horizontal" only means that its direction is more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but can be slightly tilted.
[0029] In the description of this application, it should also be noted that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" 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 or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.
[0030] In one aspect of an embodiment of the present application, a three-phase connection structure is provided, including a mounting base 100, a three-phase connection assembly 200 mounted on the mounting base 100, and a wire 300 passing through the mounting base 100, wherein a wire threading hole 110 is opened in the mounting base 100, and the wire 300 has an exposed conductor portion, and the conductor portion is sealed and passed through the wire threading hole 110.
[0031] like Figure 1As shown, by using the mounting base 100 as the basis for installing the three-phase connection assembly 200 and threading the wire 300, a solid support platform is provided to ensure the stability of the three-phase connection structure. The three-phase connection assembly 200 is a key element for achieving electrical connection between the motor and the motor controller. By using special materials and sealing technology, the three-phase connection assembly 200 can still maintain stability in an oil and gas environment and prevent oil from penetrating from the oil cavity where the motor is set to the dry cavity where the motor controller is set through the three-phase connection assembly 200. The threading hole 110 is cleverly set on the mounting base 100 to create a convenient channel for the installation of the wire 300. The conductor 300 is an important component of the three-phase connection structure. Its conductor part is exposed and sealed and passed through the wire threading hole 110. This ingenious design not only ensures the conductive efficiency of the conductor 300, but also effectively prevents the possibility of oil leakage. The exposed conductor part is sealed to form an effective barrier, which prevents the oil from penetrating into the dry cavity through capillary action on the one hand, and prevents the oil from leaking into the dry cavity from the junction of the conductor part and the wire groove on the other hand.
[0032] It should be noted that in devices such as motors and motor controllers, the wire 300, as an important component of electrical conduction, is usually designed to have an insulating layer wrapped around the conductor part to prevent electrical short circuits and other potential problems. However, when the wire 300 passes through different cavities of the device, such as from the oil chamber to the dry chamber, in order to deal with the problems that may be caused by the capillary action between the insulating layer and the conductor part of the wire 300, the wire 300 needs to undergo a wire stripping process when it passes through the threading hole 110. This means that in the area where the wire 300 is about to pass through the threading hole 110, the insulating layer of the wire 300 will be stripped, exposing the conductor part of the wire 300. Such a process can effectively prevent the oil from penetrating into the dry chamber from the tiny channel between the insulating layer and the conductor part of the wire 300 due to capillary action. Therefore, even if there is a pressure difference or other factors between the oil chamber and the dry chamber, the oil cannot invade the dry chamber, thereby effectively preventing possible failures and damage.
[0033] It should also be noted that one end of the wire 300 located in the oil chamber is connected to the connector of the motor, while the other end located in the dry chamber is connected to the resolver sensor, thereby realizing real-time monitoring of the rotation state of the motor. This arrangement not only takes into account the needs of different environments, but also avoids through-cylinder connection by passing the wire 300 through the mounting seat 100, thereby reducing the potential risk of oil penetration, simplifying the wiring structure of the overall system, and improving maintainability and reliability.
[0034] It should be understood that multiple wires 300 can be passed through the same wire threading hole 110, and appropriate measures are taken to ensure that the gaps between the multiple wires 300 are sealed, and each wire 300 is sealed with the wire threading hole 110. A common practice is to use a multi-wire sealer or a sealing kit in the wire threading hole 110. Such a sealer usually has a flexible material that can adapt to the shape of the multiple wires 300 and fill the gaps between the wires 300. The sealer usually uses oil-resistant, high-temperature-resistant and chemical-resistant materials to ensure that its sealing performance is maintained under various environmental conditions.
[0035] In addition, the number of threading holes 110 can also correspond to the number of wires 300, that is, each threading hole 110 is for accommodating one wire 300. Thus, by ensuring that the number matches, confusing wiring, crossing and cross-connection can be avoided, making the electrical system clearer and easier to maintain; more importantly, each threading hole 110 only has one wire 300 passing through it, which helps to ensure precise control of the sealing performance. By dedicating each threading hole 110 to one wire 300, it is easier to select a sealing material of appropriate size to ensure that the sealing body fully fits and effectively seals the threading hole 110.
[0036] In general, this innovative three-phase connection structure can not only prevent oil penetration and delay the aging process of electronic devices, but also effectively reduce the risk of component short circuit, ultimately ensuring the long-term stable operation of the product, reducing the possibility of serious risks such as power loss, and providing effective technical guarantees for the reliable connection between the motor and the motor controller.
[0037] Optionally, a first sealing body surrounding the conductor part is filled in the threading hole 110 to ensure a sealed connection between the threading hole 110 and the conductor part.
[0038] In devices such as motors and motor controllers, it is important to ensure a sealed connection between the wire 300 and the threading hole 110 to prevent oil and other fluids from leaking into the dry cavity through the connection between the threading hole 110 and the conductor part, thereby affecting the reliability and performance of the device. To achieve this goal, a common design is to fill the threading hole 110 with a first sealing body surrounding the conductor part. The main function of the first sealing body is to create an effective sealing layer to completely seal the threading hole 110 and the conductor part.
[0039] The first sealing body can be made of a material with excellent elasticity, oil resistance, high temperature resistance and chemical stability, such as a rubber sealing ring or an elastic rubber strip, so that the first sealing body fits the surface of the conductor part, surrounds it, fills the space of the threading hole 110, and ensures the omnidirectional sealing. This surrounding design can effectively resist the penetration of external oil and prevent the oil from leaking into the dry cavity. The process of filling the first sealing body surrounding the conductor part requires careful process control to ensure that the first sealing body completely fits the conductor part and does not leave any defects while filling the threading hole 110. Accurate process control helps to ensure the consistency and reliability of the sealing effect.
[0040] In addition, the first sealant can also be made of oil-resistant glue. After the conductor part passes through the threading hole 110, the oil-resistant glue is potted in the threading hole 110, so that a complete and strong sealing connection can be formed between the conductor part and the threading hole 110 to effectively prevent the penetration of oil. In the selection of oil-resistant glue, acetoxy silicone material is often given priority because it has excellent oil resistance and adaptability. The use of oil-resistant glue helps to fill and close the space of the threading hole 110, ensuring that there are no holes or tiny gaps between the conductor part and the threading hole 110. Such a design can not only effectively resist the penetration of oil, but also maintain its sealing performance in the case of movement of the conductor part or vibration of the equipment. This potting design method provides strong protection for the equipment and prevents potential damage to the inside of the equipment by oil. In specific implementation, the process of potting the first sealant requires careful process control. By ensuring that the oil-resistant glue fully fills the threading hole 110 and fits tightly to the conductor part, a uniform and tight sealing layer is ensured.
[0041] In general, by adopting this advanced first sealing body design, an efficient sealed connection is successfully established between the wire 300 and the threading hole 110. This not only effectively prevents oil leakage and reduces the maintenance cost of the equipment, but also improves the reliability and performance of the equipment in the oil cavity environment. This innovative design provides a reliable technical solution for the sealing performance of equipment such as motors and motor controllers.
[0042] Optionally, the length of the conductor portion is greater than the length of the threading hole 110 .
[0043] In the design of the wire 300 and the threading hole 110, it is considered that the length of the conductor part is greater than the length of the threading hole 110, that is, there is a certain excess length of the exposed conductor part in the threading hole 110, that is, there is a certain gap between the conductor part with the insulating layer and the side of the threading hole 110 close to the oil cavity. Therefore, the junction of the conductor part with the insulating layer and the exposed conductor part is located in the oil cavity. Even if the oil penetrates from the junction due to capillary action, since the junction is located in the oil cavity, the penetrated oil still remains in the oil cavity and will not enter the dry cavity. Such a design is extremely practical and can effectively prevent the influence of oil on the wire 300 and reduce the risk of electrical failure.
[0044] In order to ensure the effectiveness of this design, the difference between the length of the exposed conductor part and the length of the threading hole 110 is usually designed to be within the range of 3-5 mm, that is, there is a gap of 3-5 mm between the conductor part with the insulating layer and the side of the threading hole 110 close to the oil chamber. This gap prevents the exposed conductor part from being exposed too much in the oil chamber in the oil chamber environment, thereby avoiding electrical faults and short circuits. At the same time, even if the wire 300 vibrates or deforms slightly due to changes in the working process, it will not cause the exposed conductor part to cling to the side of the threading hole 110 close to the oil chamber, thereby avoiding the penetration of oil through capillary action.
[0045] Optionally, the three-phase connection structure also includes a three-phase Hall component 400, the three-phase Hall component 400 and the three-phase connection component 200 are embedded in the mounting base 100, the three-phase connection component 200 has a first terminal group 210 and a second terminal group 220 extending outward from the mounting base 100, and the three-phase Hall component 400 is arranged corresponding to the first terminal group 210.
[0046] like Figure 1 As shown, the three-phase connection structure not only includes the aforementioned mounting base 100, three-phase connection assembly 200, and wire 300, but also introduces a three-phase Hall assembly 400. This comprehensive structure is intended to provide more comprehensive electrical connection and monitoring functions. Specifically, the three-phase Hall assembly 400 is cleverly embedded in the mounting base 100 and cooperates with the three-phase connection assembly 200 to form a more complete electrical system.
[0047] like Figure 2 and Figure 3 As shown, the three-phase Hall component 400 is embedded in the mounting base 100 as a key part, and its main function is to monitor the intensity of the three-phase current in real time through the Hall effect. This monitoring function provides highly accurate current information for the motor system, allowing the system to control the current more intelligently. By setting the three-phase Hall component 400 corresponding to the first terminal group 210, a close connection with the motor can be achieved, ensuring that the monitored current information is accurately transmitted to the control unit, and realizing accurate control of the motor state.
[0048] like Figure 2 and Figure 3 As shown, in the three-phase connection assembly 200, the structural innovation is reflected in the first terminal group 210 and the second terminal group 220 extending outward from the mounting base 100. The advantage of this design is that the connection direction and functional positioning of the electrical system are clarified. The first terminal group 210 is specifically used to connect the insulated gate bipolar transistor (IGBT) to achieve current control and power regulation, while the second terminal group 220 is used to connect the UVW end of the motor, providing reliable power output for the electrical system, so that the motor can operate normally.
[0049] In general, this three-phase connection structure achieves more comprehensive monitoring, control and power output of the motor system by cleverly combining the three-phase Hall assembly 400, the first terminal group 210 and the second terminal group 220. This design brings higher intelligence and stability to the motor system, and is expected to promote the performance improvement of the motor system in industrial applications.
[0050] Optionally, the first terminal group 210 includes a first U-phase terminal 211, a first V-phase terminal 212 and a first W-phase terminal 213 arranged along a first direction, and the second terminal group 220 includes a second U-phase terminal 221, a second V-phase terminal 222 and a second W-phase terminal 223 arranged along a second direction perpendicular to the first direction.
[0051] like Figure 2 and Figure 3 As shown, the design of the first terminal group 210 and the second terminal group 220 fully considers the phase connection of the motor, and realizes the three-phase connection structure of the motor system by arranging the terminals in different directions. Specifically, the first terminal group 210 includes a first U-phase terminal 211, a first V-phase terminal 212, and a first W-phase terminal 213 arranged in a first direction, and the second terminal group 220 includes a second U-phase terminal 221, a second V-phase terminal 222, and a second W-phase terminal 223 arranged in a second direction perpendicular to the first direction.
[0052] First, the arrangement of the first terminal group 210 is along the first direction, which means that the first U-phase terminal 211, the first V-phase terminal 212 and the first W-phase terminal 213 are arranged in sequence in the same direction. This arrangement facilitates the wiring and connection of the motor system, so that the IGBT can be connected to the corresponding terminals in sequence. This directional arrangement helps to simplify the system wiring and improve the maintainability and debuggability of the system; secondly, the arrangement of the second terminal group 220 is along the second direction perpendicular to the first direction. This vertical arrangement design isolates the electrical signals between different phases to a certain extent and reduces the possibility of electromagnetic interference. At the same time, this arrangement also makes the wiring of the motor system more flexible and adapts to the needs of different spatial layouts.
[0053] Through such a design, the first terminal group 210 and the second terminal group 220 are arranged in different directions, ensuring that the three-phase connection structure of the motor system is compact and orderly, and improving the overall performance and reliability of the motor system. In practical applications, the system layout can be designed more flexibly to meet the requirements of specific application scenarios while ensuring that the electrical connection of the motor system is well guaranteed.
[0054] Optionally, a sealing groove 224 built into the mounting seat 100 is provided in the second terminal set 220 , and a second sealing body is filled in the sealing groove 224 to seal the second terminal set 220 and the mounting seat 100 .
[0055] like Figure 2 and Figure 3 As shown, the second terminal set 220 has a built-in sealing groove 224 and is filled with a second sealing body, which reflects a high concern for the protection of the electrical connection. The core of this design is to ensure that the sealing connection between the second terminal set 220 and the mounting seat 100 is strengthened to improve the reliability of the system.
[0056] The second terminal group 220 is a key part for connecting the motor. The second sealing body is filled in the sealing groove 224. The key to this step is to ensure that the sealing connection between the second terminal group 220 and the mounting seat 100 is fully reinforced. The second sealing body is usually made of materials with good oil resistance and high temperature resistance, such as rubber seals, polyurethane seals, adhesives, etc. Preferably, adhesives are selected, wherein the adhesives can be acrylic adhesives, fluororubber adhesives, butanone-based glues, etc. More preferably, butanone-based glues are selected. Butanone-based glues can effectively resist adverse factors such as oil in the oil cavity and temperature changes, maintain its adhesion and sealing, improve sealing performance, and ensure that oil cannot penetrate through the gap between the second terminal group 220 and the mounting seat 100, thereby better maintaining the safety and stability of the electrical system.
[0057] It should be noted that at least one sealing groove 224 should be provided on the second U-phase terminal 221, the second V-phase terminal 222, and the second W-phase terminal 223 to improve the sealing performance; preferably, two sealing grooves 224 are provided on the second U-phase terminal 221, the second V-phase terminal 222, and the second W-phase terminal 223 to ensure the sealing effect. In actual design, a balance can be made according to specific project requirements and actual application conditions, and an appropriate number of sealing grooves 224 can be selected to ensure that the three-phase connection structure can operate safely and reliably in various environments.
[0058] Optionally, the three-phase connection component 200 includes a U-phase connection component, a V-phase connection component and a W-phase connection component, and the mounting base 100 includes three independent mounting channels, which are used to install the U-phase connection component, the V-phase connection component and the W-phase connection component respectively.
[0059] In the motor system, the design of the three-phase connection component 200 is crucial to ensure the stable operation of the system. In this design, the three-phase connection component 200 is subdivided into a U-phase connection component, a V-phase connection component and a W-phase connection component, each of which is responsible for connecting the corresponding motor phase. At the same time, in order to better support and fix these connection components, the mounting base 100 is designed to have three independent installation channels, each of which is specifically used to install the U-phase connection component, the V-phase connection component and the W-phase connection component.
[0060] First, the subdivision of the U-phase connection component, the V-phase connection component, and the W-phase connection component helps to simplify the wiring and debugging of the motor system. Each connection component is responsible for connecting one phase of the motor, making the structure of the entire motor system clearer and more orderly. Through this design, it is easier to locate and deal with problems in the motor system, improving the maintainability of the system.
[0061] Secondly, the design of the mounting base 100 provides an independent installation channel for each connection component. The provision of such a channel not only ensures the safe fixation of each connection component, but also facilitates the integration and maintenance of the system. The use of such an independent channel makes the installation and replacement of the connection component easier, which helps to improve efficiency during the maintenance process.
[0062] More importantly, the independent installation channels achieve isolation of components connected to different phases. Since different phases of the motor need to be electrically isolated, the independent installation channels ensure the physical separation of components connected to each phase. This physical isolation effectively prevents electrical interference between adjacent phases and reduces potential mutual influence.
[0063] Through such a design, the U-phase connection component, the V-phase connection component and the W-phase connection component in the system can be installed independently and orderly on the mounting base 100. This modular structure helps to improve the flexibility of the system, making it easier to customize and integrate motor systems of different models. Overall, this design not only helps to simplify the installation and maintenance of the system, but also improves the overall stability and reliability of the system.
[0064] Optionally, the three-phase connection assembly 200 is installed on the mounting base 100 by insert injection molding.
[0065] In order to ensure the reliability and sealing of the motor system, the three-phase Hall assembly 400 and the three-phase connection assembly 200 filled with the second sealing body can be positioned and then installed on the mounting seat 100 by insert injection molding.
[0066] The mounting base 100 may be made of materials with high strength, excellent heat resistance and chemical stability, such as polyphenylene sulfide reinforced glass fiber 40% (PPS+GF40%), nylon 6 (PA6), nylon 66 (PA66), polybutylene terephthalate (PBT), acrylonitrile butadiene styrene (ABS), polycarbonate (PC), polyoxymethylene (POM), polyester (PET), etc. In specific applications, the mechanical requirements, chemical environment, temperature range, electrical insulation performance and other factors of the mounting base 100 should be comprehensively considered to select a suitable material.
[0067] First, by positioning the three-phase Hall assembly 400 and the three-phase connection assembly 200 filled with the second seal, their precise positions on the mounting base 100 are ensured. This positioning strategy helps to maintain accurate alignment between the components, thereby providing stable performance when the motor is running. Through such precise positioning, the gap between the components can be minimized to the greatest extent, improving the overall efficiency of the system.
[0068] Secondly, the installation method of insert injection molding brings significant advantages to the motor system. Through injection molding, the three-phase Hall assembly 400 and the three-phase connection assembly 200 filled with the second seal are embedded in the mounting seat 100 to form an integrated structure. This integrated design effectively improves the sealing and protection of the connection and reduces the looseness and friction between the components. At the same time, injection molding can also provide additional mechanical support and enhance the stability of the connection.
[0069] In summary, positioning the three-phase Hall assembly 400 and the three-phase connection assembly 200 filled with a second sealing body and installing them on the mounting base 100 by insert injection molding not only improves the accuracy and stability of the system, but also achieves significant improvements in protection and sealing, providing strong support for the reliability and performance of the motor system.
[0070] On the other hand, an embodiment of the present application provides a motor controller, including a housing and any one of the above-mentioned three-phase connection structures. The housing plays a role of protection and packaging in the entire motor controller. An opening is provided in the housing to provide a suitable position for installing a mounting seat 100 for the three-phase connection structure. The mounting seat 100 of the three-phase connection structure covers the opening to ensure that the three-phase connection structure is firmly fixed to the housing. The housing has an inner cavity, and one end of the wire 300 of the three-phase connection structure is located in the inner cavity, which can effectively isolate the wire 300 from direct contact with the external environment. Since the motor controller includes the above-mentioned three-phase connection structure, it also has the same beneficial effects as the three-phase connection structure, which will not be repeated here.
[0071] Optionally, a sealing ring for sealing the opening is provided between the housing and the mounting seat 100. The provision of the sealing ring fills the gap between the housing and the mounting seat 100 at the connection, and forms a tightly closed environment in the inner cavity, so that the oil cannot enter the inner cavity of the housing from the oil cavity. The sealing ring can be annular or in other shapes, and the material of the sealing ring can be sealing materials such as polypropylene rubber, nitrile rubber, ethylene propylene rubber, silicone rubber, fluororubber, chloroprene rubber, etc. When selecting the material of the sealing ring, environmental factors such as temperature range, chemical contact, and mechanical stress need to be considered. Different materials exhibit different performance in different environments, so it is necessary to make appropriate selections according to specific application requirements.
[0072] The above description is only the preferred embodiment of the present application and is not intended to limit the present application. For those skilled in the art, the present application may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.
Claims
1. A three-phase connection structure, characterized in that: The invention comprises a mounting seat (100), a three-phase connection assembly (200) mounted on the mounting seat (100), and a wire (300) passing through the mounting seat (100); a wire passing hole (110) is provided on the mounting seat (100); the wire (300) has an exposed conductor portion, and the conductor portion is sealed and passed through the wire passing hole (110).
2. The three-phase connection structure according to claim 1, characterized in that: A first sealing body surrounding the conductor part is filled in the threading hole (110) so that the threading hole (110) and the conductor part are sealed and connected.
3. The three-phase connection structure according to claim 1 or 2, characterized in that: The length of the conductor portion is greater than the length of the threading hole (110).
4. The three-phase connection structure according to claim 1 or 2, characterized in that: The three-phase connection structure further comprises a three-phase Hall assembly (400); the three-phase Hall assembly (400) and the three-phase connection assembly (200) are embedded in the mounting seat (100); the three-phase connection assembly (200) comprises a first terminal group (210) and a second terminal group (220) extending outward from the mounting seat (100); the three-phase Hall assembly (400) is arranged corresponding to the first terminal group (210).
5. The three-phase connection structure according to claim 4, characterized in that: The second terminal group (220) is provided with a sealing groove (224) built into the mounting seat (100), and a second sealing body is filled in the sealing groove (224) to seal the second terminal group (220) and the mounting seat (100).
6. The three-phase connection structure according to claim 4, characterized in that: The first terminal group (210) includes a first U-phase terminal (211), a first V-phase terminal (212) and a first W-phase terminal (213) arranged along a first direction, and the second terminal group (220) includes a second U-phase terminal (221), a second V-phase terminal (222) and a second W-phase terminal (223) arranged along a second direction perpendicular to the first direction.
7. The three-phase connection structure according to claim 1 or 2, characterized in that: The three-phase connection component (200) comprises a U-phase connection component, a V-phase connection component and a W-phase connection component, and the mounting seat (100) comprises three independent mounting channels, and the mounting channels are respectively used to mount the U-phase connection component, the V-phase connection component and the W-phase connection component.
8. The three-phase connection structure according to claim 1 or 2, characterized in that: The three-phase connection assembly (200) is installed on the mounting seat (100) by insert injection molding.
9. A motor controller, characterized in that: The invention comprises a shell and a three-phase connection structure as claimed in any one of claims 1 to 8, wherein the shell is provided with an opening, a mounting seat (100) of the three-phase connection structure covers the opening, the shell has an inner cavity, and one end of a wire (300) of the three-phase connection structure is located in the inner cavity.
10. The motor controller according to claim 9, characterized in that: A sealing ring for sealing the opening is arranged between the housing and the mounting seat (100).