Connecting bar assembly, motor controller, electric drive system and vehicle

Abstract

The embodiment of the invention relates to the technical field of new energy vehicles, and discloses a connecting row assembly, a motor controller, an electric drive system and a vehicle, the connecting row assembly comprises a base assembly, a plurality of first sealing elements, a plurality of second sealing elements and a plurality of connecting rows; each connecting row comprises a first connecting body, an insert body and a second connecting body which are connected in sequence, the insert body is embedded in the base assembly, and at least parts of the first connecting bodies and the second connecting bodies extend out of the base assembly in different directions; a first mounting part and a second mounting part are arranged on each second connecting body in a spaced mode in the length direction of the second connecting body, fillet structures are arranged on the two different sides of each first mounting part in the width direction of the first mounting part respectively, and a texture structure is arranged on the surface of each second mounting part; the first installation part is sleeved with the first sealing pieces respectively, and the second installation part is sleeved with the second sealing pieces respectively. The sealing performance of the connecting row assembly can be improved.

Description

Connecting the drive assembly, motor controller, electric drive system, and vehicle Technical Field

[0001] This invention relates to the field of new energy vehicle technology, specifically to a connecting assembly, a motor controller, an electric drive system, and a vehicle. Background Technology

[0002] As one of the core components of new energy vehicles, the electric drive system plays an important role in the overall composition of electric vehicles. With the continuous development of the new energy vehicle industry, the requirements for the integration of electric drive systems are getting higher and higher. The application of multi-integrated electric drive systems that integrate components such as motor controller, motor, reducer, OBC (on-board charger) and DCDC (DC-DC converter) has become a common practice.

[0003] In multi-functional electric drive systems, the motor controller and drive motor housings are adjacent. Most existing drive motors use oil cooling, resulting in a humid environment with a large amount of oil and gas inside the motor housing. However, many components and electronic devices within the motor controller housing cannot withstand the corrosion of oil and gas and require a dry, oil-free environment to function properly. If oil or gas leaks into the motor controller housing, it will cause the electronic control functions to fail. The motor controller and drive motor are electrically connected via a connector assembly, which is a high-risk point for oil and gas leakage. Therefore, in multi-functional electric drive systems, it is urgent to improve the structure of the connector assembly to ensure its sealing performance. Summary of the Invention

[0004] In view of the shortcomings of the prior art, the purpose of this application is to provide a connecting bar assembly, a motor controller, an electric drive system, and a vehicle, which aims to improve the sealing performance of the connecting bar assembly.

[0005] In a first aspect, embodiments of this application provide a connecting strip assembly, including a base assembly, a plurality of first seals, a plurality of second seals, and a plurality of connecting strips; each of the plurality of connecting strips includes a first connector, an insert body, and a second connector connected in sequence, the insert body being embedded in the base assembly, and the first connector and the second connector respectively extending at least partially out of the base assembly in different directions; a first seal and a second seal are respectively disposed between the base assembly and each of the second connectors; each of the second connectors is provided with a first mounting portion and a second mounting portion spaced apart along its length direction, the first mounting portion having rounded corner structures on different sides in its width direction, and the surface of the second mounting portion having a textured structure; each of the first seals is respectively fitted onto each of the first mounting portions, and each of the second seals is respectively fitted onto each of the second mounting portions.

[0006] The number of connecting bars can be three, which can be U-phase connecting copper bars, V-phase connecting copper bars and W-phase connecting copper bars respectively; the first sealing element can be a sealing ring, the second sealing element can be a sealant, and the base assembly can be made of plastic material with insulating properties; different directions can refer to the first connecting body and the second connecting body extending outward from the base assembly in two mutually perpendicular directions respectively.

[0007] With this configuration, the first sealing element can form an annular seal on the first mounting part, and the second sealing element can form an annular seal on the second mounting part. Through the combination of the first and second sealing elements, the sealing performance of the connecting pin assembly is improved through double sealing, preventing oil and gas leakage channels due to connection stress, thermal contraction, thermal shock, etc., thereby preventing oil and gas leakage between the connecting pin and the base assembly.

[0008] Furthermore, the connecting strip has a rectangular cross-section perpendicular to its length. By providing rounded corner structures on different sides of the first mounting part in its width direction, the cross-section of the first mounting part perpendicular to its length direction becomes waist-shaped. The smooth corner transition of the rounded corner structure ensures uniform contact after the first seal is fitted onto the first mounting part, improving sealing reliability. The textured structure can be a wavy texture or other textures with undulations. After adhesive application, the contact area between the second seal and the surface of the connecting strip increases, which can increase the sealing path and further improve sealing performance.

[0009] In one possible embodiment, the base assembly includes a first base and a second base, the second base being detachably disposed on the side of the first base facing the second connector, the insert being embedded in the first base, the first connector extending at least partially out of the first base, and the second connector extending at least partially out of the second base.

[0010] With this configuration, both the first and second bases are made of insulating plastic material. The connecting strip is injection molded together with the first base. The first and second bases are connected in a separate manner, which allows the first sealing element to be pressed and fixed at the same time when the second base is connected to the first base.

[0011] In one possible embodiment, the first base has a mounting base and a plurality of boss interfaces on the side facing the second connector. Each of the plurality of boss interfaces has a first through hole inside. The plurality of boss interfaces protrude from the mounting base along the length direction of the second connector. The second base has a second through hole corresponding to the position of each of the boss interfaces. Each of the boss interfaces is inserted into each of the second through holes. Each of the second connectors passes through the mounting base and each of the boss interfaces and extends outward from each of the second through holes.

[0012] With this configuration, each boss interface corresponds to each connecting strip. After the first base and each connecting strip are injection molded, each connecting strip extends outward from the boss interface. At this point, by fitting the first sealing element onto the connecting strip, connecting the second base to the first base, and finally forming the second sealing element by applying adhesive between the second through hole and the textured structure, the assembly of the connecting strip assembly is simple and the sealing is reliable.

[0013] In one possible embodiment, the second through hole includes an insertion section, a first mounting groove section, a through hole section, and a second mounting groove section, which are arranged sequentially along the length of the second connector. Each of the boss interfaces is inserted into the through hole section. A first mating groove is provided at the end of the first through hole facing the second through hole. The first mounting groove section is aligned with the first mating groove. The first seal is compressed and fixed between the first mounting groove and the first mating groove. The through hole section is sleeved on the second connector. A space for accommodating the second seal is formed between the second mounting groove section and the second mounting part.

[0014] With this configuration, the insertion section, the first mounting groove section, the through-hole section, and the second mounting groove section form a stepped hole shape, with different positions serving different functions. The insertion section is used for docking and positioning the boss interface. The first mounting groove section and the first mating groove can both be inclined surfaces. The first mounting groove section, the first mating groove, and the first mounting part enclose and form a space for pressing and fixing the first sealing element. After compression, the three sides of the first sealing element form a tight contact with the first mounting groove section, the first mating groove, and the first mounting part, respectively. This can improve the sealing performance at the joint of the first mounting part of the connecting bar, the first mating groove of the first base, and the first mounting groove section of the second base, preventing oil and gas from leaking into the controller housing of the motor controller from between the connecting bar, the first base, and the second base.

[0015] In addition, each of the second mounting slots is not connected to each other and forms an independent dispensing groove with each of the second mounting parts. The second seal is formed on the outside of the second mounting part by dispensing glue. Excessive glue dispensing will cause air holes. The quality of dispensing is ensured to guarantee the seal.

[0016] In one possible embodiment, a plurality of third seals are further included, wherein the mounting base is provided with a third mating groove circumferentially around each of the boss interfaces, and the third seals are compressed and fixed between the second base and the third mating grooves. The third seals may be sealing rings.

[0017] With this configuration, one side of the third seal abuts against the mounting base around the corresponding boss interface of the first base, and the other side of the third seal abuts against the second base, forming a tight surface contact fit. The third seal can improve the sealing performance at the fit between the boss interface of the first base and the second through hole of the second base, preventing oil and gas from leaking from between the first base and the second base into the controller housing of the motor controller. It can form an annular seal around each boss interface, forming a triple seal including the first seal, the second seal and the third seal, further improving the sealing performance of the connecting assembly.

[0018] In one possible embodiment, a fourth seal is further included. The first base has a fourth mounting groove circumferentially arranged corresponding to the mounting base. The fourth seal is pressed and fixed within the fourth mounting groove, and the fourth seal extends at least partially out of the fourth mounting groove along the length direction of the second connector. The fourth seal may be a sealing ring.

[0019] With this configuration, one side of the fourth seal abuts against the fourth mounting groove of the first base. After the connecting row assembly is mounted inside the controller housing of the motor controller, the other side of the fourth seal abuts against the inner wall of the controller housing of the motor controller, forming a tight surface contact fit. This can form an annular seal on the entire mounting base, creating a quadruple seal including the first seal, the second seal, the third seal, and the fourth seal, further improving the sealing performance of the connecting row assembly.

[0020] In one possible embodiment, the mounting base has a plurality of first snap-fit ​​members on its two opposing sides, and the second base has a second snap-fit ​​member at the position corresponding to each of the first snap-fit ​​members, with each of the first snap-fit ​​members and each of the second snap-fit ​​members being interconnected.

[0021] With this configuration, the first and second snap-fit ​​components form a snap-fit ​​connection structure, which facilitates installation and disassembly. After snapping, the relative positions of the second base and the first base are fixed. The first and second bases press and position the first and third seals, ensuring that the compressed first and third seals can form a tight, abutting surface contact with the corresponding components.

[0022] In one possible embodiment, the second base has multiple weight-reducing grooves on the side facing away from the mounting base.

[0023] This design prevents the second base from having excessive wall thickness, thus avoiding the formation of air holes and ensuring the airtightness of the second base itself. It also reduces material consumption and lowers costs.

[0024] In one possible embodiment, each of the second connectors is provided with a waist-shaped hole and a guide slope, the guide slope being located at the end of the second connector away from the base assembly, and the waist-shaped hole being located on the second connector between the guide slope and the base assembly.

[0025] This design allows the oblong hole to compensate for manufacturing and assembly errors when connecting the connector to the motor or other devices, reducing the accuracy requirements for installation. The edge of the connection end between the connector and the motor is a guide slope with a chamfered structure. This guide slope acts as a guide during assembly, preventing the connector from colliding with the connecting structure on the motor and causing metal fragments to fall.

[0026] In one possible embodiment, the base assembly is provided with mounting cavities corresponding to the positions of each of the first connectors, a cover is provided on the side of the mounting cavity away from the first connector, the first connector is provided with a through hole communicating with the mounting cavity, and a floating threaded connector is provided inside the mounting cavity.

[0027] With this design, the floating threaded connector can move up, down, left, right, forward, and backward within the mounting cavity, but cannot rotate. This can be achieved by setting the mounting cavity to a cuboid shape, with the floating threaded connector being a cuboid nut whose length, width, and height are slightly smaller than the mounting cavity. The floating threaded connector can move within the mounting cavity. When assembling the connector pin to connect to the motor controller or other devices, the bolt passes through the connector pin, then through the through hole, and into the mounting cavity. The floating threaded connector can fine-tune its position to accommodate the bolt, compensating for manufacturing and assembly errors and reducing installation accuracy requirements. The floating threaded connector cannot rotate, ensuring that the bolt can be tightened or loosened normally to achieve threaded connection or separation between the bolt and the floating threaded connector. The mounting cavity and the cover can be joined together by heat riveting or welding, enclosing the floating threaded connector inside the mounting cavity and preventing debris from falling into the controller housing cavity during bolt assembly.

[0028] Secondly, embodiments of this application provide a motor controller, including a controller housing and the aforementioned connection assembly.

[0029] The connecting strip assembly is connected to the inner wall of the controller housing via threaded fasteners. One side of the fourth seal abuts against the fourth mounting groove of the first base. After the connecting strip assembly is installed inside the controller housing of the motor controller, the other side of the fourth seal abuts against the inner wall of the controller housing, forming a tight surface contact fit. The multiple seals of the connecting strip assembly prevent oil and gas leakage channels caused by connection stress, thermal contraction, thermal shock, etc., thereby preventing oil and gas from entering the controller housing of the motor controller.

[0030] Thirdly, embodiments of this application provide an electric drive system, including a motor and the aforementioned motor controller. The motor controller and the drive motor are electrically connected via a connecting bus assembly. The motor housing of the motor is adjacent to the controller housing of the motor controller, and the second connector of the connecting bus assembly of the motor controller extends into the motor housing. Multiple seals of the connecting bus assembly prevent oil and gas leakage channels due to connection stress, thermal contraction, thermal shock, etc., thereby preventing oil and gas from entering the controller housing of the motor controller.

[0031] Fourthly, embodiments of this application provide a vehicle that includes the aforementioned electric drive system.

[0032] The beneficial effects of this application are: (1) The first sealing element of this application can form an annular seal on the first mounting part, and the second sealing element can form an annular seal on the second mounting part. Through the combination of the first sealing element and the second sealing element, the sealing performance of the connecting strip assembly is improved through double sealing, preventing oil and gas leakage channels due to connection stress, thermal contraction, thermal shock, etc., thereby preventing oil and gas leakage between the connecting strip and the base assembly.

[0033] (2) The smooth corner transition of the rounded corner structure of this application enables the first sealing element to make uniform contact after being fitted onto the first mounting part, thereby improving the sealing reliability. The textured structure can be a wavy texture or other textures with undulations. After the adhesive is applied, the contact area between the second sealing element and the surface of the connecting strip increases, which can increase the sealing path and further improve the sealing performance. Attached Figure Description

[0034] To more clearly illustrate the technical solutions in the embodiments of this application or the background art, the accompanying drawings used in the embodiments of this application will be described below.

[0035] Figure 1 is a structural schematic diagram of the vehicle disclosed in an embodiment of this application; Figure 2 is a structural schematic diagram of the electric drive system disclosed in an embodiment of this application; Figure 3 is a partially enlarged schematic diagram of the structure of the motor controller corresponding to the connecting bar assembly disclosed in an embodiment of this application; Figure 4 is an exploded schematic diagram of the connecting bar assembly disclosed in an embodiment of this application; Figure 5 is a structural schematic diagram of the connecting bar assembly disclosed in an embodiment of this application; Figure 6 is one of the structural schematic diagrams of the first base disclosed in an embodiment of this application; Figure 7 is another structural schematic diagram of the first base disclosed in an embodiment of this application; Figure 8 is one of the structural schematic diagrams of the second base disclosed in an embodiment of this application; Figure 9 is another structural schematic diagram of the second base disclosed in an embodiment of this application; Figure 10 is one of the structural schematic diagrams of the connecting bar disclosed in an embodiment of this application; Figure 11 is another structural schematic diagram of the connecting bar disclosed in an embodiment of this application; Figure 12 is a cross-sectional schematic diagram of the floating threaded connector position of the connecting bar disclosed in an embodiment of this application.

[0036] Explanation of reference numerals in the attached drawings: 100-First base, 101-Mounting base, 102-Boss interface, 103-First through hole, 104-First mating groove, 105-Third mating groove, 106-Fourth mounting groove, 107-First snap-fit ​​component, 108-Mounting cavity; 200-Second base, 201-Second through hole, 2011-Insertion section, 2012-First mounting groove section, 2013-Through hole section, 2014-Second mounting groove section, 202-Second snap-fit ​​component, 203-Weight reduction groove; 300-Connecting strip, 301-First connecting strip 3011-Through hole, 302-Insert body, 303-Second connector, 3031-First mounting part, 3032-Second mounting part, 3033-Oval hole, 3034-Guide slope; 400-First seal, 500-Second seal, 600-Third seal, 700-Fourth seal, 800-Cap, 900-Floating threaded connector; 1-Motor controller, 11-Controller housing, 2-Motor, 21-Motor housing, 3-Reducer, 4-Body, 5-Electric drive system, 6-Battery pack. Detailed Implementation

[0037] The terms "first," "second," etc., are used for descriptive purposes only and have no sequential or technical meaning, nor should they be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Directional terms used in this application, such as "upper," "lower," "front," "rear," "left," "right," "inner," and "outer," are merely for reference to the orientation shown in the accompanying drawings. The use of directional terms is for better and clearer explanation and understanding of this application, and does not indicate the orientation of the referred device or component in an actual application scenario.

[0038] In the description of the embodiments of this application, unless otherwise expressly specified and limited, the terms "installation" and "connection" should be interpreted broadly. For example, "connection" can be a detachable connection or a non-detachable connection; it can be a direct connection or an indirect connection through an intermediate medium. "Fixed connection" refers to a connection where the relative positional relationship remains unchanged after connection. "Rotary connection" refers to a connection where the two parts can rotate relative to each other after connection. "Sliding connection" refers to a connection where the two parts can slide relative to each other after connection.

[0039] The terms "parallel" and "perpendicular" are relative to the current technological level, not absolute mathematical definitions. Slight deviations are permissible; approximations of parallelism or perpendicularity are acceptable. For example, "A and B are parallel" means that A and B are parallel or approximately parallel, with the angle between them ranging from 0 to 5 degrees. Similarly, "A and B are perpendicular" means that A and B are perpendicular or approximately perpendicular, with the angle between them ranging from 85 to 95 degrees.

[0040] The term "electrical connection" refers to the flow of current or signal from one conductor to another. An electrical connection between A and B means that current or signal can flow from A to B and vice versa. This connection includes direct and indirect electrical connections. A direct electrical connection between A and B means that A and B are physically connected. An indirect electrical connection between A and B means that A and B are connected via C, where C can be at least one wire or device.

[0041] The embodiments of this application are described below with reference to the accompanying drawings.

[0042] Please refer to Figure 1, which is a schematic diagram of the vehicle structure disclosed in an embodiment of this application. The vehicle can be, but is not limited to, a pure electric vehicle (PEV / BEV), a hybrid electric vehicle (HEV), a range-extended electric vehicle (REEV), a plug-in hybrid electric vehicle (PHEV), or a new energy vehicle.

[0043] In this embodiment, the vehicle includes a body 4, a battery pack 6, and an electric drive system 5. The battery pack 6 is fixedly mounted on the bottom of the body, and the electric drive system 5 is located at the front-wheel drive and / or rear-wheel drive position of the body 4, and is fixedly connected to the body 4. The battery pack 6 is electrically connected to the electric drive system 5, and the battery pack 6 supplies power to the electric drive system 5. After receiving power, the electric drive system 5 converts electrical energy into mechanical energy to drive the vehicle to move.

[0044] Please refer to Figure 2, which is a schematic diagram of the electric drive system disclosed in this application embodiment. The electric drive system includes a motor 2 and a motor controller 1. The motor controller 1 and the drive motor are electrically connected through a connecting bus assembly. The motor housing 21 of the motor 2 is adjacent to the controller housing 11 of the motor controller 1, and the second connector 303 of the connecting bus assembly of the motor controller 1 extends into the motor housing 21. The multiple seals of the connecting bus assembly prevent oil and gas leakage channels due to connection stress, thermal contraction, thermal shock, etc., thereby preventing oil and gas in the motor housing 21 from entering the controller housing 11 of the motor controller 1. Of course, the electric drive system can also be a multi-integrated electric drive system that integrates the motor controller 1, motor 2, reducer 3, OBC, and DC-DC converter.

[0045] Please refer to Figure 3, which is a partially enlarged schematic diagram of the structure of the motor controller 1 corresponding to the connecting strip assembly disclosed in this application embodiment. The motor controller 1 includes a controller housing 11 and a connecting strip assembly. The connecting strip assembly is connected to the inner wall of the controller housing 11 by threaded fasteners. One side of the fourth sealing member 700 abuts against the fourth mounting groove 106 of the first base 100. After the connecting strip assembly mounting base 101 is placed inside the controller housing 11 of the motor controller 1, the other side of the fourth sealing member 700 abuts against the inner wall of the controller housing 11 of the motor controller 1, forming a tight surface contact fit. The multiple seals of the connecting strip assembly prevent oil and gas leakage channels due to connection stress, thermal contraction, thermal shock, etc., thereby preventing oil and gas from entering the controller housing 11 of the motor controller 1.

[0046] Please refer to Figures 3, 4, 10, and 11. The connecting strip assembly includes a base assembly, multiple first seals 400, multiple second seals 500, and multiple connecting strips 300. Each of the multiple connecting strips 300 includes a first connector 301, an insert 302, and a second connector 303 connected in sequence. The insert 302 is embedded in the base assembly. The first connectors 301 and second connectors 303 extend at least partially from the base assembly in different directions. The base assembly and each of the second connectors 303 are connected... Each is provided with a first sealing element 400 and a second sealing element 500; each second connector 303 is provided with a first mounting part 3031 and a second mounting part 3032 at intervals along its length direction. The first mounting part 3031 is provided with rounded corner structures on different sides in its width direction, and the surface of the second mounting part 3032 is provided with a textured structure; each first sealing element 400 is respectively fitted onto each first mounting part 3031, and each second sealing element 500 is respectively fitted onto each second mounting part 3032.

[0047] The number of connecting busbars 300 can be three, which can be U-phase connecting copper busbars, V-phase connecting copper busbars, and W-phase connecting copper busbars, respectively. Each of these busbars is independent and does not contact the others. The U-phase, V-phase, and W-phase connecting copper busbars are made of direct-connection hard copper, and the material can be T2 copper. The first sealing element 400 can be a sealing ring, the second sealing element 500 can be sealant, and the base assembly can be made of insulating plastic. "Different directions" can refer to the first connecting body 301 and the second connecting body 303 extending outwards from the base assembly in two mutually perpendicular directions.

[0048] With this configuration, the first seal 400 can form an annular seal on the first mounting portion 3031, and the second seal 500 can form an annular seal on the second mounting portion 3032. Through the combination of the first seal 400 and the second seal 500, the sealing performance of the connecting strip assembly is improved through double sealing, preventing oil and gas leakage channels due to connection stress, thermal contraction, thermal shock, etc., thereby preventing oil and gas leakage between the connecting strip 300 and the base assembly.

[0049] Furthermore, the connecting strip 300 has a rectangular cross-section perpendicular to its length. By providing rounded corner structures on different sides of the first mounting portion 3031 in its width direction, the cross-section of the first mounting portion 3031 perpendicular to its length direction becomes waist-shaped. The smooth corner transition of the rounded corner structure ensures uniform contact after the first sealing element 400 is fitted onto the first mounting portion 3031, improving sealing reliability. The textured structure can be a wavy texture or other textures with undulations. After adhesive application, the contact area between the second sealing element 500 and the surface of the connecting strip 300 increases, which can increase the sealing path and further improve sealing performance.

[0050] Optionally, please refer to Figures 3-5. The base assembly includes a first base 100 and a second base 200. The second base 200 is detachably disposed on the side of the first base 100 facing the second connector 303. The insert 302 is embedded in the first base 100. The first connector 301 extends at least partially out of the first base 100, and the second connector 303 extends at least partially out of the second base 200.

[0051] With this configuration, both the first base 100 and the second base 200 are made of plastic with insulating properties. The connecting strip 300 is injection molded together with the first base 100. The first base 100 and the second base 200 are connected in a separate manner, which can simultaneously press and fix the first sealing element 400 when the second base 200 is connected to the first base 100.

[0052] Optionally, as shown in Figures 3-9, the first base 100 is provided with a mounting base 101 and a plurality of boss interfaces 102 on the side facing the second connector 303. Each of the plurality of boss interfaces 102 is provided with a first through hole 103. The plurality of boss interfaces 102 protrude from the mounting base 101 along the length direction of the second connector 303. The second base 200 is provided with a second through hole 201 corresponding to the position of each boss interface 102. Each boss interface 102 is inserted into each second through hole 201. Each second connector 303 passes through the mounting base 101 and each boss interface 102 and extends outward from each second through hole 201.

[0053] With this configuration, each boss interface 102 corresponds one-to-one with each connecting row 300. After the first base 100 and each connecting row 300 are injection molded, each connecting row 300 extends outward from the boss interface 102. At this time, by fitting the first sealing member 400 onto the connecting row 300, connecting the second base 200 to the first base 100, and finally forming the second sealing member 500 by applying adhesive between the second through hole 201 and the textured structure, the assembly of the connecting row assembly is simple and the sealing is reliable.

[0054] Optionally, referring to Figure 3, the second through hole 201 includes an insertion section 2011, a first mounting groove section 2012, a through hole section 2013, and a second mounting groove section 2014. The insertion section 2011, the first mounting groove section 2012, the through hole section 2013, and the second mounting groove section 2014 are arranged sequentially along the length direction of the second connector 303. Each boss interface 102 is inserted into the through hole section 2013. A first mating groove 104 is provided at the end of the first through hole 103 facing the second through hole 201. The first mounting groove section 2012 is connected to the first mating part. The first seal 400 is compressed and fixed between the first mounting groove and the first mating groove 104. The through hole section 2013 is sleeved on the second connector 303. A space for accommodating the second seal 500 is formed between the second mounting groove section 2014 and the second mounting part 3032.

[0055] With this configuration, the insertion hole section 2011, the first mounting groove section 2012, the through hole section 2013, and the second mounting groove section 2014 form a stepped hole shape, each serving a different function. The insertion hole section 2011 is used for docking and positioning with the boss interface 102. Both the first mounting groove section 2012 and the first mating groove 104 can be inclined surfaces. The first mounting groove section 2012, the first mating groove 104, and the first mounting part 3031 enclose and form a space to compress and fix the first sealing member 400. The first sealing member 400 is compressed. The three rear sides respectively form a tight abutment with the first mounting groove 2012, the first mating groove 104 and the first mounting part 3031, which can improve the sealing performance of the mating of the first mounting part 3031 of the connecting bar 300, the first mating groove 104 of the first base 100 and the first mounting groove 2012 of the second base 200, and prevent oil and gas from leaking into the controller housing 11 of the motor controller 1 from between the connecting bar 300, the first base 100 and the second base 200.

[0056] Furthermore, each of the second mounting grooves 2014 is not interconnected and forms an independent dispensing groove with each of the second mounting parts 3032. The second seal 500 is formed on the outside of the second mounting part 3032 by dispensing adhesive. Excessive dispensing amount will cause air holes. The dispensing quality is ensured to ensure sealing.

[0057] Optionally, referring to Figures 3 and 4, the connecting assembly also includes multiple third seals 600. The mounting base 101 has a third mating groove 105 circumferentially surrounding each boss interface 102. The third seals 600 are compressed and fixed between the second base 200 and the third mating groove 105. The third seals 600 can be sealing rings.

[0058] With this configuration, one side of the third seal 600 abuts against the mounting base 101 around the corresponding boss interface 102 of the first base 100, and the other side of the third seal 600 abuts against the second base 200, forming a tight surface contact fit. The third seal 600 can improve the sealing performance at the mating point between the boss interface 102 of the first base 100 and the second through hole 201 of the second base 200, preventing oil and gas from leaking from between the first base 100 and the second base 200 into the controller housing 11 of the motor controller 1. It can form an annular seal around each boss interface 102, forming a triple seal including the first seal 400, the second seal 500 and the third seal 600, further improving the sealing performance of the connecting assembly.

[0059] Optionally, referring to Figures 3-5, the connecting assembly further includes a fourth seal 700. The first base 100 has a fourth mounting groove 106 circumferentially surrounding the mounting base 101. The fourth seal 700 is pressed and fixed within the fourth mounting groove 106, and at least partially extends out of the fourth mounting groove 106 along the length of the second connecting body 303. The fourth seal 700 can be a sealing ring.

[0060] With this configuration, one side of the fourth seal 700 abuts against the fourth mounting groove 106 of the first base 100. After the connecting row assembly mounting base 101 is placed inside the controller housing 11 of the motor controller 1, the other side of the fourth seal 700 abuts against the inner wall of the controller housing 11 of the motor controller 1, forming a tight surface contact fit. This can form an annular seal on the entire mounting base 101, creating a quadruple seal including the first seal 400, the second seal 500, the third seal 600, and the fourth seal 700, further improving the sealing performance of the connecting row assembly.

[0061] Optionally, please refer to Figures 5, 6 and 9. Multiple first snap-fit ​​pieces 107 are provided on the two opposite sides of the mounting base 101. The second base 200 is provided with second snap-fit ​​pieces 202 corresponding to the positions of each first snap-fit ​​piece 107. Each first snap-fit ​​piece 107 and each second snap-fit ​​piece 202 are interconnected.

[0062] With this configuration, the first snap-fit ​​component 107 and the second snap-fit ​​component 202 form a snap-fit ​​connection structure, which facilitates installation and disassembly. After snap-fitting, the relative positions of the second base 200 and the first base 100 are fixed. The first base 100 and the second base 200 press and position the first seal 400 and the third seal 600, ensuring that the compressed first seal 400 and the third seal 600 can form a tight surface contact fit with the corresponding components.

[0063] Optionally, as shown in Figure 9, the second base 200 has a plurality of weight-reducing grooves 203 on the side facing away from the mounting base 101.

[0064] With this design, the weight reduction groove 203 can prevent the second base 200 from having excessive wall thickness and forming air holes, ensuring the airtightness of the second base 200 itself, while also reducing material consumption and lowering costs.

[0065] Optionally, as shown in Figures 3 and 10, each of the second connectors 303 is provided with a waist-shaped hole 3033 and a guide slope 3034. The guide slope 3034 is located at the end of the second connector 303 away from the base assembly, and the waist-shaped hole 3033 is located on the second connector 303 between the guide slope 3034 and the base assembly.

[0066] With this design, when connecting the connector 300 to the motor or other devices, the oblong hole 3033 can compensate for manufacturing and assembly errors, reducing the installation accuracy requirements. The edge of the connection end between the connector 300 and the motor is a guide slope 3034. The guide slope 3034 has a chamfered structure, which can play a guiding role during assembly, preventing the connector 300 from colliding with the connection structure on the motor and causing metal fragments to fall off.

[0067] Optionally, please refer to Figures 4 and 12. The base assembly is provided with mounting cavities 108 corresponding to the positions of each first connector 301. A cover 800 is provided on the side of the mounting cavity 108 away from the first connector 301. The first connector 301 is provided with a through hole 3011 communicating with the mounting cavity 108. A floating threaded connector 900 is provided inside the mounting cavity 108.

[0068] With this configuration, the floating threaded connector 900 can move up, down, left, right, forward, and backward within the mounting cavity 108, but cannot rotate. This can be achieved by setting the mounting cavity 108 to a cuboid shape, while the floating threaded connector 900 is a cuboid nut with dimensions slightly smaller than the mounting cavity 108. The floating threaded connector 900 can move within the mounting cavity 108. When assembling the connecting strip 300 to connect to the motor controller 1 or other devices, the bolt passes through the connecting strip 300, then through the through hole 3011, and enters the mounting cavity 108. The floating threaded connector 900 can fine-tune its position to accommodate the bolt, compensating for manufacturing and assembly errors and reducing installation accuracy requirements. The floating threaded connector 900 cannot rotate, ensuring that the bolt can be tightened or loosened normally, thus achieving threaded connection or separation between the bolt and the floating threaded connector 900. The mounting cavity 108 and the cover 800 can be connected together by hot riveting or welding, and the floating threaded connector 900 is enclosed inside the mounting cavity 108, which can prevent debris from falling into the cavity of the controller housing 11 of the motor controller 1 when assembling bolts.

[0069] Optionally, the first base 100 and the second base 200 can be made of plastic material with good insulation properties, such as PPS engineering plastic, which stands for Polyphenylene Sulfide. The first seal 400, the third seal 600, and the fourth seal 700 can be made of oil-resistant sealing rings, such as AEM material, which is ethylene-ethyl acrylate rubber.

[0070] It should be understood that the application of this application is not limited to the examples above. Those skilled in the art can make improvements or modifications based on the above description, and all such improvements and modifications should fall within the protection scope of the appended claims. Those skilled in the art can understand that implementing all or part of the processes of the above embodiments and making equivalent changes according to the claims of this application still fall within the scope of this application.

Claims

1. A connecting strip assembly, characterized in that: The system includes a base assembly, multiple first seals (400), multiple second seals (500), and multiple connecting rows (300); each of the multiple connecting rows (300) includes a first connector (301), an insert (302), and a second connector (303) connected in sequence, wherein the insert (302) is embedded in the base assembly, and the first connector (301) and the second connector (303) extend at least partially out of the base assembly in different directions; a first seal is respectively provided between the base assembly and each of the second connectors (303). A seal (400) and a second seal (500); each of the second connectors (303) is provided with a first mounting portion (3031) and a second mounting portion (3032) spaced apart along its length direction, the first mounting portion (3031) is provided with rounded corner structures on different sides in its width direction, and the surface of the second mounting portion (3032) is provided with a textured structure; each of the first seals (400) is respectively fitted onto each of the first mounting portions (3031), and each of the second seals (500) is respectively fitted onto each of the second mounting portions (3032).

2. The connecting strip assembly according to claim 1, characterized in that: The base assembly includes a first base (100) and a second base (200). The second base (200) is detachably disposed on the side of the first base (100) facing the second connector (303). The insert (302) is embedded in the first base (100). The first connector (301) extends at least partially out of the first base (100), and the second connector (303) extends at least partially out of the second base (200).

3. The connecting strip assembly according to claim 2, characterized in that: The first base (100) is provided with a mounting base (101) and a plurality of boss interfaces (102) on the side facing the second connector (303). Each of the plurality of boss interfaces (102) is provided with a first through hole (103). The plurality of boss interfaces (102) protrude from the mounting base (101) along the length direction of the second connector (303). The second base (200) is provided with a second through hole (201) corresponding to the position of each of the boss interfaces (102). Each of the boss interfaces (102) is inserted into each of the second through holes (201). Each of the second connectors (303) passes through the mounting base (101) and each of the boss interfaces (102) and extends outward from each of the second through holes (201).

4. The connecting strip assembly according to claim 3, characterized in that: The second through hole (201) includes an insertion section (2011), a first mounting groove section (2012), a through hole section (2013), and a second mounting groove section (2014). The insertion section (2011), the first mounting groove section (2012), the through hole section (2013), and the second mounting groove section (2014) are arranged sequentially along the length direction of the second connector (303). Each of the boss interfaces (102) is inserted into the through hole section (2013), and the surface of the first through hole (103) A first mating groove (104) is provided at one end of the second through hole (201), the first mounting groove section (2012) is connected to the first mating part, and the first sealing element (400) is compressed and fixed between the first mounting groove and the first mating groove (104); the perforated section (2013) is sleeved on the second connector (303), and a space for accommodating the second sealing element (500) is formed between the second mounting groove section (2014) and the second mounting part (3032).

5. The connecting strip assembly according to claim 4, characterized in that: It also includes a plurality of third seals (600), and the mounting base (101) is provided with a third mating groove (105) circumferentially surrounding each of the boss interfaces (102), and the third seals (600) are compressed and fixed between the second base (200) and the third mating groove (105).

6. The connecting strip assembly according to claim 3, characterized in that: It also includes a fourth sealing element (700), the first base (100) is provided with a fourth mounting groove (106) around the circumference of the mounting base (101), the fourth sealing element (700) is pressed and fixed in the fourth mounting groove (106), and the fourth sealing element (700) extends at least partially out of the fourth mounting groove (106) along the length direction of the second connector (303); a plurality of first snap-fit ​​elements (107) are provided on the two opposing sides of the mounting base (101), and a second snap-fit ​​element (202) is provided on the second base (200) corresponding to the position of each first snap-fit ​​element (107), and each first snap-fit ​​element (107) and each second snap-fit ​​element (202) are connected to each other; a plurality of weight-reducing grooves (203) are provided on the side of the second base (200) facing away from the mounting base (101).

7. The connecting strip assembly according to claim 1, characterized in that: Each of the second connectors (303) is provided with a waist-shaped hole (3033) and a guide slope (3034). The guide slope (3034) is located at the end of the second connector (303) away from the base assembly. The waist-shaped hole (3033) is located on the second connector (303) between the guide slope (3034) and the base assembly. The base assembly is provided with a mounting cavity (108) corresponding to the position of each of the first connectors (301). A cover (800) is provided on the side of the mounting cavity (108) away from the first connector (301). The first connector (301) is provided with a through hole (3011) communicating with the mounting cavity (108). A floating threaded connector (900) is provided inside the mounting cavity (108).

8. A motor controller, characterized in that: Includes the connection bar assembly as described in any one of claims 1-7.

9. An electric drive system, characterized in that: Includes the motor controller as described in claim 8.

10. A vehicle, characterized in that: Including the electric drive system as described in claim 9.

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