Motor assembly, hydraulic energy supply device, chassis system and vehicle

Abstract

The present disclosure provides a motor assembly (700), a hydraulic energy supply device (600), a chassis system, and a vehicle. The motor assembly (700) comprises a motor controller (300) and a motor (120, 220), the motor (120, 220) being connected to the outer side of the motor controller (300). The motor (120, 220) comprises a housing (121, 221), and a flow channel (121o, 221o) is formed at the part of the housing (121, 221) facing the motor controller (300). In the present disclosure, the flow channel (121o, 221o) is provided at the part of the housing (121, 221) of the motor (120, 220) facing the motor controller (300), thus helping to dissipate heat of the motor controller (300), and further improving the operation efficiency of the motor controller (300).

Description

Motor components, hydraulic power supply devices, chassis systems and vehicles

[0001] This disclosure claims priority to Chinese patent publication number CN 202323183015.X, filed on November 23, 2023, entitled “Motor assembly, hydraulic power supply device, chassis system and vehicle,” the entire contents of which are incorporated by reference into this disclosure. Technical Field

[0002] The present disclosure generally relates to the technical field of vehicles, and more particularly to a motor assembly, a hydraulic power supply device, a chassis system, and a vehicle. Background Art

[0003] In the related art, a motor assembly includes a motor and a motor controller. The cooling channel of the motor controller is generally arranged inside the electric control box, which is relatively difficult to process.

[0004] Summary of the Invention

[0005] The Summary of the Invention introduces a series of simplified concepts that will be further described in the Detailed Description of the Invention. The Summary of the Invention of this disclosure is not intended to limit the key features and essential technical features of the claimed technical solution, nor is it intended to determine the scope of protection of the claimed technical solution.

[0006] To at least partially address the above-mentioned issues, the present disclosure provides, in a first aspect, a motor assembly. The motor assembly includes a motor controller and a motor. The motor is connected to an exterior of the motor controller. The motor includes a housing. A flow channel is formed in a portion of the housing facing the motor controller.

[0007] According to the motor assembly of the first aspect of the present disclosure, by setting a first flow channel at a position of the motor close to the motor controller, the motor controller can be cooled when a heat exchange medium flows through the flow channel, thereby improving the operating efficiency of the motor controller.

[0008] Optionally, the housing includes a housing body, a flow channel plate, and flow guide ribs. The housing body has a mounting slot formed in a portion facing the motor controller. The flow channel plate is connected to the mounting slot to form a heat dissipation cavity. The flow channel plate supports the motor controller. The flow guide ribs are connected to the heat dissipation cavity to define the heat dissipation cavity as the flow channel.

[0009] Optionally, the flow channel plate includes an auxiliary heat sink extending to the flow channel.

[0010] Optionally, the auxiliary heat sink is configured as a heat sink pin. The flow channel plate includes a plurality of the heat sink pins. The heat sink pins are spaced apart along an arrangement path adapted to the flow channel.

[0011] Optionally, the guide rib and the shell body are integrally formed.

[0012] Optionally, the motor assembly includes two motors, the two motors are coaxial and arranged opposite to each other, and the housings of the two motors are connected.

[0013] Optionally, the two housings are a first housing and a second housing, respectively. A recessed platform is formed at an end of the first housing near the second housing. A protrusion is formed at an end of the second housing near the first housing. The protrusion fits within the recessed platform. The protrusion is welded to the recessed platform to secure the second housing to the first housing.

[0014] Optionally, the two housings are an integrated piece.

[0015] Optionally, a receiving groove is formed at the connection between the two housings, wherein the notch of the receiving groove faces the motor controller, and the receiving groove is used to at least receive a capacitor of the motor controller.

[0016] Optionally, the two housings are respectively designated as a first housing and a second housing. The flow channel formed in the first housing is designated as a first flow channel. The flow channel formed in the second housing is designated as a second flow channel. The first flow channel and the second flow channel are separated by the receiving groove. The first flow channel and the second flow channel are connected at the connection between the first housing and the second housing.

[0017] Optionally, the motor controller includes an electric control housing and a ventilation valve. The electric control housing is connected to the housing. The ventilation valve is connected to the electric control housing. The ventilation valve is connected to the inside and outside of the electric control housing.

[0018] A second aspect of the present disclosure provides a hydraulic energy supply device for an active suspension, wherein the hydraulic energy supply device includes the above-mentioned motor assembly.

[0019] According to the hydraulic power supply device of the second aspect of the present disclosure, by applying the above-mentioned motor assembly, the motor controller can be effectively dissipated, thereby improving the operating efficiency of the hydraulic power supply device.

[0020] A third aspect of the present disclosure provides a hydraulic power supply device. The hydraulic power supply device further includes a first hydraulic pump, a second hydraulic pump, and a motor assembly. The motor assembly is the motor assembly described above. The two motors are referred to as a first motor and a second motor, respectively. The first motor is connected to the first hydraulic pump and is adapted to drive the first hydraulic pump. The second motor is connected to the second hydraulic pump and is adapted to drive the second hydraulic pump.

[0021] According to the hydraulic energy supply device of the third aspect of the present disclosure, by applying the above-mentioned motor assembly, the motor controller can be effectively dissipated, thereby improving the operating efficiency and power of the hydraulic energy supply device.

[0022] Optionally, the housings of the two motors are respectively designated as a first housing and a second housing. The first housing and the second housing are connected. The first hydraulic pump is disposed at an end of the first housing away from the second housing. The second hydraulic pump is disposed at an end of the second housing away from the first housing.

[0023] A fourth aspect of the present disclosure provides a chassis system comprising a shock absorber and the aforementioned hydraulic power supply device, wherein the hydraulic power supply device is fluidically connected to the shock absorber.

[0024] According to the chassis system provided in the fourth aspect of the present disclosure, the vibration reduction effect of the chassis system can be improved by applying the above-mentioned hydraulic energy supply device.

[0025] A fifth aspect of the present disclosure provides a vehicle, which includes the aforementioned motor assembly, or the aforementioned hydraulic energy supply device, or the aforementioned chassis system.

[0026] The vehicle provided according to the fifth aspect of the present disclosure, by applying the above-mentioned hydraulic power supply device or the above-mentioned chassis system, helps to improve the stability of the vehicle during driving and the comfort of the driver and passengers.

[0027] Optionally, the motor assembly includes a first motor, a second motor, a first flow channel, and a second flow channel. The first flow channel is provided in the first motor. The second flow channel is provided in the second motor. The vehicle also includes an air conditioner. The air conditioner fluid is connected to the first flow channel and / or the second flow channel. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] The following drawings of the embodiments of the present disclosure are hereby incorporated into the present disclosure for understanding the present disclosure. The embodiments of the present disclosure and their description are shown in the drawings to explain the principles of the present disclosure. In the drawings,

[0029] FIG1 is a perspective view of a hydraulic energy supply device according to a preferred embodiment of the present disclosure;

[0030] FIG2 is an exploded perspective view of the first housing in FIG1 ;

[0031] FIG3 is another exploded perspective view of the first housing in FIG1 ;

[0032] FIG4 is an exploded perspective view of the second housing in FIG1 ;

[0033] FIG5 is another exploded perspective view of the second housing in FIG1 ;

[0034] FIG6 is an exploded perspective view of the first motor pump in FIG1 ;

[0035] FIG7 is an exploded perspective view of the second motor pump in FIG1 ;

[0036] FIG8 is a cross-sectional view of the hydraulic energy supply device in FIG1 ;

[0037] Figure 9 is an enlarged view of point I in Figure 8;

[0038] FIG10 is an exploded perspective view of the hydraulic energy supply device shown in FIG1 ;

[0039] FIG11 is a perspective view of a hydraulic energy supply device according to another preferred embodiment of the present disclosure;

[0040] FIG12 is an exploded perspective view of the first housing in FIG11;

[0041] FIG13 is another exploded perspective view of the first housing in FIG11;

[0042] FIG14 is an exploded perspective view of the second housing in FIG11;

[0043] FIG15 is another exploded perspective view of the second housing in FIG11;

[0044] FIG16 is an exploded perspective view of the first motor pump in FIG11 ;

[0045] FIG17 is an exploded perspective view of the second motor pump in FIG11 ;

[0046] FIG18 is a cross-sectional view of the hydraulic energy supply device shown in FIG11 ;

[0047] FIG19 is an exploded perspective view of the hydraulic energy supply device shown in FIG11 ;

[0048] FIG20 is a perspective view of a hydraulic energy supply device according to another preferred embodiment of the present disclosure;

[0049] FIG21 is an exploded perspective view of the integrated housing and flow channel plate in FIG20 ;

[0050] FIG22 is another exploded perspective view of the integrated housing and the flow channel plate in FIG20 ;

[0051] FIG23 is an exploded perspective view of the hydraulic energy supply device shown in FIG20;

[0052] FIG24 is a cross-sectional view of the hydraulic energy supply device shown in FIG20;

[0053] FIG25 is an exploded perspective view of the hydraulic energy supply device shown in FIG20;

[0054] FIG26 is a perspective view of a connection between a first electrical connector and a first motor body according to a preferred embodiment of the present disclosure;

[0055] FIG27 is a perspective cross-sectional view of the connection between the first electrical connector and the first motor body in FIG26 ;

[0056] FIG28 is a schematic structural diagram of the first electrical connector shown in FIG26 and FIG27;

[0057] FIG29 is a perspective view of a connection between a first electrical connector and a first motor body according to another preferred embodiment of the present disclosure;

[0058] FIG30 is a schematic structural diagram of the first electrical connector shown in FIG29;

[0059] FIG31 is an exploded perspective view of the first electrical connector shown in FIGS. 29 and 30 ;

[0060] FIG32 is a schematic structural diagram of the tapered cylinder shown in FIG29 to FIG31;

[0061] FIG33 is a perspective view of a connection between a first electrical connector and a first motor body according to another preferred embodiment of the present disclosure; and

[0062] FIG. 34 is a perspective view of the first electrical connector shown in FIG. 33 .

[0063] Description of reference numerals:

[0064] 100: First motor pump 110: First hydraulic pump

[0065] 111: First pump casing positioning column 112: First pump casing sealing ring

[0066] 113: First connection hole 114: First connection hole B

[0067] 120: First motor 121: First housing

[0068] 121a: First shell body 121b: First mounting groove

[0069] 121c: First guide rib 121d: First electric control housing positioning column

[0070] 121e: First via hole 121g: First wire hole

[0071] 121h: First resolver hole 121i: Motor housing positioning hole

[0072] 121j: sinking platform 121n: first pump casing limiting hole

[0073] 121o: first flow channel 121p: first opening

[0074] 121q: second opening 121r: first partial groove

[0075] 121s: Second via hole 121t: First heat dissipation cavity

[0076] 122: First Radiator

[0077] 123: First heat pipe 124: First flow channel plate

[0078] 124a: first auxiliary heat sink 125: first motor body

[0079] 125a: First movement seal ring 126: First liquid connection joint

[0080] 127: Second liquid connector 128: First lead wire

[0081] 129: First insulating seal 130: First end cap assembly

[0082] 131: First end cap 131a: First cantilever

[0083] 132: First end cover sealing ring 140: Detection component

[0084] 141: First sealing ring 142: First temperature sensor

[0085] 143: Second temperature sensor 144: First adapter board

[0086] 145: Adapter column 146: Second sealing ring

[0087] 147: Fixed plate 148: Second adapter plate

[0088] 149: Adapter assembly 150: First rotary transformer assembly

[0089] 151: First rotary seal ring 152: First rotary retaining spring

[0090] 153: First rotating body 160: First electrical connector

[0091] 161: first electrical connection end 161a: first electrical terminal

[0092] 161b: second electrical terminal 161c: third electrical terminal

[0093] 162: protrusion 162a: first avoidance portion

[0094] 162b: First guide portion 162c: Abutment portion

[0095] 162d: Second guide portion 162e: Second avoidance portion

[0096] 163: Conical tube 163a: Connection hole

[0097] 163b: first end 163c: second end

[0098] 163d: Groove 164: Base

[0099] 164a: Connecting groove 165: Base

[0100] 166: Clamping portion 166a: Positioning groove

[0101] 167: Clamp 168: Connecting plate

[0102] 168a: First connecting plate 168b: Second connecting plate

[0103] 168c: third connecting plate 169: second electrical connection terminal

[0104] 169a: fourth electrical terminal 169b: fifth electrical terminal

[0105] 169c: Sixth electrical terminal 200: Second motor pump

[0106] 210: Second hydraulic pump 211: Second pump housing positioning column

[0107] 212: Second pump housing seal ring 213: Third connecting hole

[0108] 214: Fourth connection hole 220: Second motor

[0109] 221: Second housing 221a: Second housing body

[0110] 221b: Second installation groove 221c: Second guide rib

[0111] 221d: Second electric control housing positioning column 221e: Third through hole

[0112] 221g: Second via hole 221h: Second resolver via hole

[0113] 221i: Motor housing positioning column 221j: Boss

[0114] 221n: Second pump casing limiting hole 221o: Second flow channel

[0115] 221p: third opening 221q: fourth opening

[0116] 221r: second partial groove 221s: fourth via hole

[0117] 221t: Second heat dissipation chamber

[0118] 222: Second radiator 223: Second heat pipe

[0119] 224: Second flow channel plate 224a: Second auxiliary heat sink

[0120] 225: Second motor body 225a: Second movement sealing ring

[0121] 226: Third fluid connector 227: Fourth fluid connector

[0122] 228: Second lead wire 229: Second insulating seal

[0123] 230: Second end cap assembly 231: Second end cap

[0124] 231a: Second cantilever 232: Second end cover sealing ring

[0125] 250: Second rotary transformer assembly 251: Second rotary transformer sealing ring

[0126] 252: Second rotary spring 253: Second rotary body

[0127] 260: Second electrical connector 300: Motor controller

[0128] 310: Electric control housing 320: Signal connector

[0129] 330: Busbar electrical terminal 340: Ventilation valve

[0130] 350: Shielding plate 360: Control circuit board

[0131] 370: Driver circuit board 371: Power device

[0132] 372: AC terminal 373: DC terminal

[0133] 375: Capacitor 376: First power device

[0134] 377: Second power device 400: Accommodation slot

[0135] 500: Chassis

[0136] 500a: Accommodation groove 500c: Flow groove

[0137] 500e: First installation groove 500f: First guide rib

[0138] 500g: First via hole 500i: First flow channel

[0139] 500j: First liquid port 500k: Second liquid port

[0140] 500m: Second installation groove 500n: Second guide rib

[0141] 500o: third via hole 500q: second flow channel

[0142] 500r: third liquid port 500s: fourth liquid port

[0143] 500t: Second via hole 500u: Fourth via hole

[0144] 501: Flow cover 502: Flow channel plate

[0145] 502a: auxiliary heat sink 502b: positioning boss

[0146] 503: First liquid connection 504: Second liquid connection

[0147] 600: Hydraulic power supply device 700: Motor assembly

[0148] D1: first direction D2: second direction, axial direction

[0149] D3: third direction DY1: first extension direction

[0150] DY2: Second extension direction DY3: Third extension direction DETAILED DESCRIPTION

[0151] In the following description, numerous specific details are provided to provide a more thorough understanding of the present disclosure. However, it will be apparent to those skilled in the art that the present disclosure embodiments may be implemented without one or more of these details. In other examples, certain technical features known in the art are not described to avoid confusion with the present disclosure embodiments.

[0152] In order to fully understand the embodiments of the present disclosure, a detailed structure will be presented in the following description. Obviously, the implementation of the embodiments of the present disclosure is not limited to the specific details familiar to those skilled in the art.

[0153] It should be understood that the terminology used herein is intended only to describe specific embodiments and is not intended to limit the present disclosure. The singular forms "a," "an," and "the" are intended to include the plural forms, unless the context clearly indicates otherwise. When the terms "comprise" and / or "include" are used in this specification, they indicate the presence of the stated features, integers, steps, operations, elements, and / or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and / or combinations thereof.

[0154] Ordinal numbers such as "first" and "second" used in this disclosure are merely identifiers and do not convey any other meaning, such as a specific order. Furthermore, for example, the term "first component" does not, by itself, imply the existence of a "second component," nor does the term "second component" by itself, imply the existence of a "first component." It should be noted that the terms "upper," "lower," "front," "rear," "left," "right," "inner," "outer," and similar expressions used in this disclosure are for illustrative purposes only and are not intended to be limiting.

[0155] Hereinafter, specific embodiments of the present disclosure will be described in more detail with reference to the accompanying drawings. These drawings illustrate representative embodiments of the present disclosure and do not limit the present disclosure.

[0156] The present disclosure provides a hydraulic energy supply device 600. The hydraulic energy supply device 600 can be used in an active chassis system. The active chassis system can actively adjust the shock absorber according to different road conditions, thereby improving the comfort and safety of the vehicle chassis. As shown in Figures 1 to 34, the hydraulic energy supply device 600 according to the present disclosure may include a motor pump, a motor controller, and a radiator. The motor pump may include a hydraulic pump and a motor for driving the hydraulic pump. Two motor pumps may form a motor pump unit. The power of the motor pump unit may be greater than 8 kW, for example, 9 kW. The motor and motor controller may form a motor assembly 700. The motor may include a motor body and a housing. The motor body may include a stator and a rotor. The stator includes stator windings and a stator core. The stator windings are connected to the stator core. The stator windings include a winding body and lead wires. The lead wires include a root end and a tip end along their length, i.e., two ends of the lead wire. The root end of the lead wire is connected to the winding body and fixed to the stator core. For example, the root end of the lead wire is wound around the stator core, or a busbar is provided at one end of the winding connected to the lead wire. The lead wire is fixedly connected to the busbar. For example, a three-phase motor includes a three-phase winding and three lead wires corresponding to the three-phase winding. Each of the three-phase windings is connected to the busbar. The busbar is further connected to the three lead wires. The three lead wires can be integral with the busbar. The tips of the lead wires are connected to a copper busbar. The motor pump assembly described above includes two motors. The two motors can be respectively designated as a first motor 120 and a second motor 220. The first motor 120 includes a first winding body and a first lead wire 128. The second motor 220 includes a second winding body and a second lead wire 228. The motor controller 300 is disposed on the outside of the motor along a first direction D1. When the hydraulic power supply device 600 is mounted on a vehicle, the first direction D1 can coincide with the height of the vehicle, in which case the motor controller 300 can be located above the motor. The heat sink is located between the motor and the motor controller and is thermally connected to the motor and the motor controller. The heat sink is used to conduct heat away from the motor controller to achieve cooling of the motor controller.

[0157] According to the hydraulic energy supply device 600 disclosed herein, by providing a radiator between the motor and the motor controller 300 , the heat of the motor and the motor controller 300 can be conducted, thereby facilitating heat dissipation of the motor controller 300 and further improving the operating efficiency of the motor controller 300 .

[0158] Referring to Figures 1 to 19 , for example, a hydraulic power supply device 600 according to the present disclosure may include a first motor pump 100, a motor controller 300, and a first radiator 122. The first motor pump 100 may include a first hydraulic pump 110 and a first motor 120 for driving the first hydraulic pump 110. The motor controller 300 is located outside the first motor 120 along a first direction D1. When the hydraulic power supply device 600 is mounted on a vehicle, the first direction D1 may coincide with the vehicle's height. In this case, the motor controller 300 may be located above the first motor 120. The motor controller 300 may also be located to one side of the motor in the longitudinal direction of the vehicle body. For example, when the motor controller 300 is mounted on the front axle of the vehicle, it may be located behind the first motor 120. When the motor controller 300 is mounted on the rear axle, it may be located in front of the first motor 120. With this arrangement, the first direction D1 is changed accordingly. In the following description, the present disclosure continues to illustrate the height of the vehicle body in the first direction D1, but D1 may also be the length direction. When the direction defined by D1 changes, the other directions with D1 as a reference are adjusted accordingly. The first radiator 122 is located between the first motor 120 and the motor controller 300. And is thermally connected to the first motor 120 and the motor controller 300. The first radiator 122 is used to conduct heat from the first motor 120 and the motor controller 300. By providing the first radiator between the first motor and the motor controller 300, the heat from the first motor and the motor controller 300 can be conducted, thereby helping to dissipate heat from the motor controller 300 and thereby improving the operating efficiency of the motor controller 300.

[0159] Continuing with Figures 1 to 19, the hydraulic energy supply device 600 may further include a second motor pump 200 and a second radiator 222. The second motor pump 200 and the first motor pump 100 are arranged sequentially along a second direction D2. The second direction D2 is parallel to the axis of the first motor 120. The axis of the first motor 120 here can be understood as the rotational axis of the rotor of the first motor 120, or the axis of the rotor of the first motor 120. That is, the first motor pump 100 and the second motor pump 200 are coaxial and arranged opposite each other. The relative arrangement or relative setting here can be understood as the first motor 120 and the second motor 220 being arranged sequentially in opposite directions. For example, the output ends of the first motor 120 and the second motor 220 are respectively facing away from each other, or arranged close to each other. This is rather than the two motors being arranged sequentially with the same orientation. In the embodiment of the present disclosure, the output ends of the two motors are respectively located at opposite ends of the axial direction D2 of the motor assembly 700. When it is applied to a motor-pump assembly, the two motors are arranged relative to each other, so that the two motors can share the motor controller 300 and the output setting of the hydraulic pump is convenient. The second motor pump 200 may include a second hydraulic pump 210 and a second motor 220 for driving the second hydraulic pump 210. The first motor 120 is connected to the second motor 220. The motor controller 300 is located on the outside of the second motor 220 along the first direction D1. The second radiator 222 is located between the second motor 220 and the motor controller 300 and is thermally connected to the second motor 220 and the motor controller 300. The second radiator 222 is used to conduct heat from the second motor 220 and the motor controller 300. In this embodiment, the hydraulic energy supply device 600 includes two motor pumps, and the control of the two motor pumps is achieved through the motor controller 300. By setting the first radiator 122 between the motor controller 300 and the first motor 120, and setting the second radiator 222 between the motor controller 300 and the second motor 220, the parts of the motor controller 300 corresponding to the first motor 120 and the second motor 220 can be cooled, thereby improving the heat dissipation effect of the motor controller 300, thereby improving the operating efficiency and stability of the motor controller 300.

[0160] Optionally, there may be one or two motor controllers. When there is one motor controller, the electrical components and / or devices within the motor controller may be integrated on a corresponding circuit board, or two sets of integrated circuit boards with the same functionality may be provided. When there are two motor controllers, each motor controller may be provided with a set of integrated circuit boards, and the two sets of integrated circuit boards may be identical.

[0161] 1 to 10 , two heat sinks are provided, which are respectively referred to as a first heat sink 122 and a second heat sink 222 .

[0162] Continuing with Figures 1 to 10 , in one example, the first radiator 122 is a first heat pipe 123. The first heat pipe 123 can include a sealed housing and a heat-conducting medium sealed within the housing. When heated, the heat-conducting medium vaporizes, allowing the first heat pipe 123 to absorb external heat, achieving a cooling effect. When cooled, the heat-conducting medium liquefies, allowing the first heat pipe 123 to release heat to the outside, thereby achieving a heat release effect. In this embodiment, the first heat pipe 123 absorbs heat from the motor controller 300 and transfers it to the first motor 120. Because the first motor 120 is connected to the first hydraulic pump 110, the first motor 120 also contains a portion of a hydraulic circuit, allowing heat to be removed through the hydraulic circuit. The hydraulic circuit can then be cooled using other evaporative cooling methods. The first heat pipe 123 can be manufactured and implemented based on the principles of conventional heat pipes. The first heat pipe 123 can have any shape, such as square, circular, polygonal, or any other shape, and can be either regular or irregular. Accordingly, the second radiator 222 can be a second heat pipe 223. The second heat pipe 223 can include a sealed housing and a heat-conducting medium sealed within the housing. When heated, the heat-conducting medium vaporizes, allowing the second heat pipe 223 to absorb external heat, achieving a cooling effect. When cooled, the heat-conducting medium liquefies, allowing the second heat pipe 223 to release heat to the outside, thereby achieving a heat release effect. In this embodiment, the second heat pipe 223 can absorb heat from the motor controller 300 and transfer it to the second motor 220. Because the second motor 220 is connected to the second hydraulic pump 210, the second motor 220 also contains a portion of a hydraulic circuit, allowing heat to be removed through the hydraulic circuit. The hydraulic circuit can then be cooled using other evaporative cooling methods. The second heat pipe 223 can be manufactured and implemented with reference to the mechanisms of heat pipes in the prior art. The second heat pipe 223 can have any shape, such as square, circular, polygonal, or any other shape, and can be regular or irregular.

[0163] Referring to Figures 1 to 10, further, the first motor 120 may include a first housing 121. The first heat pipe 123 is arranged in the first housing 121. Here, a groove may be provided in the first housing 121, and the first heat pipe 123 is installed in the groove. This facilitates the separate manufacture of the first heat pipe 123 and the first housing 121. Correspondingly, the second motor 220 may include a second housing 221. The second heat pipe 223 is arranged in the second housing 221. Here, a groove may be provided in the second housing 221, and the second heat pipe 223 is installed in the groove. This facilitates the separate manufacture of the second heat pipe 223 and the second housing 221. The first housing 121 and the second housing 221 are connected to form a common housing. The common housing is a non-detachable housing.

[0164] As shown in Figures 2, 3, 6, 8, and 10, the first housing 121 has a first heat pipe 123 and a groove for mounting the first heat pipe 123. Because heat pipes have excellent thermal conductivity, the addition of the first heat pipe 123 effectively dissipates heat from the power device 371 of the motor controller 300. The power device 371 and the first heat pipe 123 can be connected via a heat-conducting medium such as thermal grease or a heat-conducting structure. The first housing 121 also has a first electrical control housing positioning post 121d, which is used to engage with a positioning hole (not shown) in the electrical control housing 310 for position retention. The first housing 121 also has a motor housing positioning hole 121i, which is used to position the motor housing during assembly with the second housing 221. The first housing 121 also has a first through hole 121e for mounting a temperature sensor. The first housing 121 also has a countersunk platform 121j, which allows for close engagement with the boss 221j of the second housing 221 to facilitate friction welding.

[0165] As shown in Figures 4, 5, 7, and 10, the second housing 221 has a second heat pipe 223 and a groove for mounting the heat pipe. Because heat pipes have excellent thermal conductivity, the addition of the second heat pipe 223 effectively dissipates heat from the power device 371 of the motor controller 300. The power device 371 and the second heat pipe 223 can be connected via a heat-conducting medium such as thermal grease or a heat-conducting structure. The second housing 221 also has a second electrical control housing positioning post 221d, which is used to engage with a positioning hole (not shown) in the electrical control housing 310 for position control. The second housing 221 also has a motor housing positioning hole 121i, which is used to position the motor housing during assembly with the second housing 221. The second housing 221 also has a third through hole 221e for mounting a second temperature sensor. The second housing 221 also has a boss 221j, which is used to tightly engage with the countersunk platform 121j of the first housing 121 to facilitate friction welding.

[0166] 1 , 8 , and 10 , for example, the motor controller 300 may include an electronic control housing 310. The electronic control housing 310 is connected to the first housing 121 and the second housing 221. The first heat sink 122 is located between the electronic control housing 310 and the first housing 121. The second heat sink 222 is located between the electronic control housing 310 and the second housing 221.

[0167] Referring to Figures 2 to 10 , further, a receiving slot 400 is formed at the connection between the first housing 121 and the second housing 221. Specifically, the first motor 120 includes a first motor body (not labeled). Both the first motor body and the second motor body include a stator and a rotor. The stator includes a stator winding and a stator core. The second motor 220 includes a second motor body (not labeled). A receiving slot 400 is provided between the first motor body and the second motor body. The receiving slot 400 is formed within the first housing 121 and the second housing 221. The notch of the receiving slot 400 faces the motor controller 300. The receiving slot 400 can be used to accommodate at least one electrical component or device of the motor controller 300, such as the capacitor 375. The capacitor 375 can be connected to the power device 371 corresponding to the first heat pipe 123 and the power device 371 corresponding to the second heat pipe 223. This facilitates the integration of the motor controllers 300 for the two motors, enabling the two power devices 371 to share a single capacitor 375, thereby improving the integration of the motor controller 300.

[0168] Furthermore, the end portion of the first housing body 121a of the first housing 121 facing the second housing 221 is recessed to form a first partial groove 121r (as shown in Figures 2 and 6). The end portion of the second housing body 221a of the second housing 221 facing the first housing 121 is recessed to form a second partial groove 221r ​​(as shown in Figures 4 and 7). The first partial groove 121r and the second partial groove 221r ​​form a receiving groove 400 after the first housing 121 and the second housing 221 are assembled. The receiving groove 400 here and the receiving groove 500a described below can have the same position relative to the first motor and the second motor, and the same function as that achieved.

[0169] Referring to Figures 11 to 19 , in another example, the first motor 120 may include a first housing 121 . A first radiator 122 is formed in the first housing 121 . A first flow channel 121o is formed within the radiator. The first flow channel 121o is used to circulate a heat exchange medium. The heat exchange medium can exchange heat generated by the motor controller 300, thereby dissipating heat and cooling the motor controller 300. The heat exchange medium in the first flow channel 121o can be heat-exchanged at other locations in the heat exchange circuit to cool the heat exchange medium. Accordingly, the second motor 220 may include a second housing 221 . A second radiator 222 is formed in the second housing 221 . A second flow channel 221o is formed within the second radiator 222 . The second flow channel 221o is used to circulate a heat exchange medium. The heat exchange medium can exchange heat generated by the motor controller 300, thereby dissipating heat and cooling the motor controller 300. The heat exchange medium in the second flow channel 221o can be heat-exchanged at other locations in the heat exchange circuit to cool the heat exchange medium.

[0170] Referring to Figures 12 and 14, schematically, the first flow channel 121o is arranged in a circuitous shape. By setting the first flow channel 121o in a circuitous or serpentine shape, it helps to increase the residence time of the heat exchange medium in the first flow channel 121o, so that it can more fully perform heat exchange with the motor controller 300 to achieve a better heat dissipation effect. The circuitous shape here is not limited to the form shown in the figure, and can also be any other form that can increase the extension length of the first flow channel 121o within an area of ​​the same size. Correspondingly, the second flow channel 221o is arranged in a circuitous shape. By setting the second flow channel 221o in a circuitous or serpentine shape, it helps to increase the residence time of the heat exchange medium in the second flow channel 221o, so that it can more fully perform heat exchange with the motor controller 300 to achieve a better heat dissipation effect. The circuitous shape here is not limited to the form shown in the figure, and can also be any other form that can increase the extension length of the second flow channel 221o within an area of ​​the same size.

[0171] Referring to Figures 12 to 19 , the first housing 121 may further include a first housing body 121a, a first flow channel plate 124, and first guide ribs 121c. A first mounting slot 121b is defined in the portion of the first housing body 121a facing the motor controller 300. The first flow channel plate 124 is connected to the first mounting slot 121b to seal the opening of the first mounting slot 121b, thereby forming a first heat dissipation cavity 121t. Specifically, the first flow channel plate 124 covers the first mounting slot 121b, enclosing the first heat dissipation cavity 121t between the first flow channel plate 124 and the first housing body 121a. The first heat dissipation cavity 121t can accommodate a heat exchange medium. The first flow channel plate 124 supports the motor controller 300, thereby absorbing heat from the motor controller 300 and improving heat exchange efficiency. The first guide rib 121c is connected to the first heat dissipation cavity 121t, defining the first heat dissipation cavity 121t as a first flow channel 121o. By providing a first guide rib 121c within the first heat dissipation cavity 121t, the first heat dissipation cavity 121t is divided into the aforementioned first flow channel 121o. In short, the inner surface of the first mounting groove 121b, the first guide rib 121c, and the first flow channel plate 124 enclose the first flow channel 121o. Accordingly, the second housing 221 may include a second housing body 221a, a second flow channel plate 224, and a second guide rib 221c. A second mounting groove 221b is defined in the portion of the second housing body 221a facing the motor controller 300. The second flow channel plate 224 is connected to the second mounting groove 221b to close the notch of the second mounting groove 221b, thereby forming the second heat dissipation cavity 221t. Specifically, the second flow channel plate 224 covers the second mounting groove 221b, enclosing the second heat dissipation cavity 221t between the second flow channel plate 224 and the second housing body 221a. The second heat dissipation cavity 221t can accommodate a heat exchange medium. The second flow channel plate 224 supports the motor controller 300, thereby absorbing heat from the motor controller 300 and improving heat exchange efficiency. The second guide rib 221c is connected to the second heat dissipation cavity 221t, thereby defining the second heat dissipation cavity 221t as a second flow channel 221o. By disposing the second guide rib 221c within the second heat dissipation cavity 221t, the second heat dissipation cavity 221t is divided into the aforementioned second flow channel 221o. In short, the inner surface of the second mounting groove 221b, the second guide rib 221c, and the second flow channel plate 224 enclose and form the second flow channel 221o.

[0172] Furthermore, referring to Figures 12, 13, 16, 18, and 19, the first flow channel plate 124 may include a first auxiliary heat sink 124a extending into the first flow channel 121o. By providing the first auxiliary heat sink 124a on the first flow channel plate 124, the contact area between the first flow channel plate 124 and the heat exchange medium within the first flow channel plate 124 can be increased, thereby further improving the heat exchange efficiency. Accordingly, referring to Figures 14, 15, and 17 to 19, the second flow channel plate 224 may include a second auxiliary heat sink 224a extending into the second flow channel 221o. By providing the second auxiliary heat sink 224a on the second flow channel plate 224, the contact area between the second flow channel plate 224 and the heat exchange medium within the second flow channel plate 224 can be increased, thereby further improving the heat exchange efficiency.

[0173] Specifically, as shown in FIG13 , the first auxiliary heat sink 124a can be configured as a first heat sink pin. The first heat sink pin extends along the depth direction of the first mounting groove 121b. The first flow channel plate 124 can include multiple first heat sink pins. Each first heat sink pin is spaced apart along an arrangement path that is compatible with the first flow channel 121o. That is, when the first flow channel plate 124 is positioned over the notch of the first mounting groove 121b, the first heat sink pin is located within the first flow channel 121o, and the first heat sink pin and the first guide rib 121c are staggered. Correspondingly, as shown in FIG15 , the second auxiliary heat sink 224a can be configured as a second heat sink pin. The second heat sink pin extends along the depth direction of the second mounting groove 221b. The second flow channel plate 224 can include multiple second heat sink pins. Each second heat sink pin is spaced apart along an arrangement path that is compatible with the second flow channel 221o. That is, when the second flow channel plate 224 is covered at the notch of the second installation groove 221 b , the second heat dissipation pins are located in the second flow channel 221 o , and the second heat dissipation pins and the second guide ribs 221 c are staggered with each other.

[0174] 11 , 18 , and 19 , for example, the motor controller 300 may include an electronic control housing 310. The electronic control housing 310 is connected to the first housing 121 and the second housing 221. The first heat sink 122 is located between the electronic control housing 310 and the first housing 121. The second heat sink 222 is located between the electronic control housing 310 and the second housing 221.

[0175] Referring to Figures 12, 14, and 16 to 19, further, a receiving groove 400 is formed at the connection between the first housing 121 and the second housing 221. The receiving groove 400 can be used to at least accommodate electrical components or devices such as the capacitor 375 of the motor controller 300. The capacitor 375 can be connected to the power device 371 corresponding to the first heat pipe 123 and the power device 371 corresponding to the second heat pipe 223. This helps to integrate the motor controllers 300 of the two motors, realizes that the two power devices 371 share one capacitor 375, and improves the integration of the motor controller 300.

[0176] Referring to Figures 12 to 19, further, the end portion of the first housing body 121a of the first housing 121 facing the second housing 221 is recessed to form a first partial groove 121r (as shown in Figures 12 and 16). The end portion of the second housing body 221a of the second housing 221 facing the first housing 121 is recessed to form a second partial groove 221r ​​(as shown in Figures 14 and 17). The first partial groove 121r and the second partial groove 221r ​​form a receiving groove 400 after the first housing 121 and the second housing 221 are assembled. The receiving groove 400 here and the receiving groove 500a described below can have the same position relative to the first motor and the second motor, and the same functions as those implemented.

[0177] Referring to Figures 11, 18, and 19, the electrical control housing 310 can optionally be fastened to the first housing 121 and the second housing 221 using fasteners such as bolts. It will be appreciated that to facilitate the positioning and assembly of the electrical control housing 310 with the first housing 121 and the second housing 221, positioning structures can be provided at corresponding positions between the electrical control housing 310 and the first housing 121, and at corresponding positions between the electrical control housing 310 and the second housing 221, respectively. The positioning structures can be divided into two parts: one part is provided in the electrical control housing 310, and the other part is provided in the first housing 121 and the second housing 221. One part of the two positioning structures can be configured as a positioning hole, and the other part can be configured as a positioning post that fits within the positioning hole.

[0178] Referring to Figures 1 to 19, in one embodiment of the present disclosure, the first housing 121 can be welded to the second housing 221 by friction welding to form a common housing. The common housing here is a non-detachable housing. During the welding process, the motor housing positioning holes 121i on the first housing 121 and the motor housing positioning columns 221i on the second housing 221 can be used to limit the mutual position of the first housing 121 and the second housing 221. In this way, the sink 121j of the first housing 121 and the boss 221j of the second housing 221 can be tightly fitted, thereby making the connection structure of the first housing 121 and the second housing 221 more secure after friction welding.

[0179] For example, a sink 121j is formed at the end of the first housing 121 along the second direction D2 (as shown in Figures 2 and 6). A boss 221j is formed at the end of the second housing 221 along the second direction D2 (as shown in Figures 4 and 7). The boss 221j is adapted to the sink 121j. The boss 221j is welded and fixed to the sink 121j. The cooperation between the sink 121j and the boss 221j facilitates the positioning and assembly between the first housing 121 and the second housing 221. By connecting the first housing 121 and the second housing 221 by welding, the stability of the connection structure between the two can be improved, and when a reasonable welding process is adopted, the sealing performance of the connection between the first housing 121 and the second housing 221 can be better and more durably maintained.

[0180] It is understandable that if the first housing 121 is connected to the second housing 221 by welding, the welding method is not limited to friction welding. For example, other welding methods can be selected to ensure the stability of the connection structure between the first housing 121 and the second housing 221 and the sealing of the connection.

[0181] Referring to Figures 11 to 19 , when the first housing 121 and the second housing 221 are manufactured separately and then assembled into an integrated dual-motor housing, the first flow channel 121o and the second flow channel 221o can be connected in parallel. That is, the first flow channel 121o and the second flow channel 221o are independent of each other in the first housing 121 and the second housing 221. In other words, the first flow channel 121o and the second flow channel 221o are each connected to corresponding devices via pipelines outside the hydraulic power supply device 600. For example, the first flow channel 121o and the second flow channel 221o can each be connected to the heat exchange circuit of an air conditioner to share heat exchange medium with the air conditioner. This parallel connection of the first flow channel 121o and the second flow channel 221o can also be applied to embodiments in which the first housing 121 and the second housing 221 are manufactured separately and then assembled together, and the two share a receiving tank 400. The receiving tank 400 in this case will affect the layout of the first flow channel 121o and the second flow channel 221o.

[0182] Specifically, as shown in Figures 12 and 13, the first flow channel 121o has a first opening 121p and a second opening 121q. The first opening 121p allows the heat exchange medium to flow into the first flow channel 121o, and the second opening 121q allows the heat exchange medium to flow out of the first flow channel 121o. As shown in Figures 14 and 15, the second flow channel 221o has a third opening 221p and a fourth opening 221q. The third opening 221p allows the heat exchange medium to flow into the second flow channel 221o, and the fourth opening 221q allows the heat exchange medium to flow out of the second flow channel 221o. The first opening 121p and the second opening 121q are connected to the heat exchange circuit of the air conditioner via a set of pipes. The third opening 221p and the fourth opening 221q are connected to the heat exchange circuit of the air conditioner via another set of pipes.

[0183] Furthermore, as shown in Figures 12 and 13 , the end of the first housing body 121a for mounting the first hydraulic pump 110 is provided with a first opening 121p and a second opening 121q. The first opening 121p and the second opening 121q are spaced apart along a third direction D3 perpendicular to the first direction D1 and the second direction D2. The first housing 121 may also include a first liquid connection 126 and a second liquid connection 127. The first liquid connection 126 is mounted to the first opening 121p and connects to the first heat dissipation cavity 121t and the outside. The second liquid connection 127 is mounted to the second opening 121q and connects to the first heat dissipation cavity 121t and the outside. The first liquid connection 126 and the second liquid connection 127 are used to connect pipelines. Accordingly, as shown in Figures 14 and 15 , the end of the second housing body 221a for mounting the second hydraulic pump 210 is provided with a third opening 221p and a fourth opening 221q. The third opening 221p and the fourth opening 221q are spaced apart along a third direction D3 perpendicular to the second direction D2 and the second direction D2. The second housing 221 also includes a third liquid connection 226 and a fourth liquid connection 227. The third liquid connection 226 is mounted to the third opening 221p and connects to the second heat dissipation cavity 221t and the outside. The fourth liquid connection 227 is mounted to the fourth opening 221q and connects to the second heat dissipation cavity 221t and the outside. The third and fourth liquid connection 226 and 227 are used to connect pipelines.

[0184] In other embodiments not shown, the first flow channel and the second flow channel are respectively located on both sides of the receiving groove. And the first flow channel and the second flow channel are connected in series. For example, a flow groove is provided on the side wall of the first housing and the second housing on the same side. The flow groove is connected to the first flow channel and the second flow channel respectively. Specifically, the side wall of the first housing close to the second housing is provided with a first flow groove. The side wall of the second housing close to the first housing is provided with a second flow groove. The first flow groove is connected to the second flow groove to form a flow groove. The hydraulic power supply device 600 also includes a flow cover. The flow cover can be part of the first housing and the second housing. The flow cover is sealed and connected to the notch of the flow groove in a detachable manner to form a flow channel. The first flow channel and the second flow channel are connected through the flow channel.

[0185] Referring to Figures 20 to 25 , in another embodiment of the present disclosure, the first and second housings are formed using an integrated dual-motor housing, referred to as an integrated housing 500, using an integrated molding method. Integrated housing 500 serves as a common housing for the first motor 120 and the second motor 220. This common housing is non-detachable. Compared to the first motor pump 100 and the second motor pump 200 described above, the common features of the first and second motor pumps will not be discussed in detail. The following primarily describes the differences.

[0186] Referring to Figures 21 and 22, for example, the integrated housing 500 defines a first liquid port 500j, a second liquid port 500k, a third liquid port 500r, and a fourth liquid port 500s. The first liquid port 500j and the fourth liquid port 500s are located at opposite ends of the integrated housing 500. The second liquid port 500k and the third liquid port 500r are located between the first liquid port 500j and the fourth liquid port 500s. The second liquid port 500k and the first liquid port 500j are spaced apart along a third direction D3 perpendicular to the first direction D1 and the second direction D2. The first liquid port 500j and the second liquid port 500k are both connected to a first mounting groove 500e. A first guide rib 500f is disposed within the first mounting groove 500e. A flow channel plate 502 is mounted on the first mounting groove 500e to form a first flow channel 500i. The fourth liquid port 500s and the third liquid port 500r are spaced apart along the third direction D3. The third liquid port 500r and the fourth liquid port 500s are both connected to the second mounting groove 500m. A second guide rib 500n is disposed within the second mounting groove 500m. A flow channel plate 502 is mounted on the second mounting groove 500m to form a second flow channel 500q. The second liquid port 500k and the third liquid port 500r are located at the same end of the integrated housing 500 along the third direction D3. An overflow groove 500c is defined on the outwardly facing surface of the integrated housing 500 along the third direction D3. The overflow groove 500c is disposed near the second liquid port 500k and the third liquid port 500r along the third direction D3. The overflow groove 500c is located between the second liquid port 500k and the third liquid port 500r. The overflow groove 500c extends along the second direction D2 and is respectively connected to the second liquid outlet 500k and the third liquid outlet 500r. The notch of the overflow groove 500c faces outward along the third direction D3. The integrated housing 500 may include an overflow cover 501. The overflow cover 501 covers the notch of the overflow groove 500c to seal the notch of the overflow groove 500c. The overflow cover 501, the first shell body 121a, and the second shell body 221a enclose a flow channel. As a result, the first flow channel 500i and the second flow channel 500q formed in the integrated housing are connected in series through the overflow channel.

[0187] Referring to Figures 20 to 25 , the integrated housing 500 may further include a first liquid connection 503 and a second liquid connection 504. The first liquid connection 503 is mounted on the first liquid port 500j and connects to the first mounting groove 500e and the outside. The second liquid connection 504 is mounted on the fourth liquid port 500s and connects to the second mounting groove 500m and the outside. The first and second liquid connections 503 and 504 can be connected to the heat exchange circuit of the vehicle's air conditioner via pipes, thereby sharing heat exchange medium with the air conditioner.

[0188] 21 , 23 , and 25 , a positioning boss 502 b may optionally be provided on the surface of the flow channel plate 502 facing the motor controller 300. The positioning boss 502 b is configured to abut against the driver circuit board 370, thereby aligning the driver circuit board 370 and the flow channel plate 502 along the first direction D1. This helps prevent the driver circuit board 370 from moving relative to the flow channel plate 502 along the first direction D1 due to vibration or other factors, thereby preventing the power device 371 from being damaged due to excessive force.

[0189] In other embodiments not shown, the flow groove 500c may also be provided at other locations of the integrated housing 500. For example, it may be provided on a side of the integrated housing 500 that faces the motor controller 300 along the first direction D1. In this case, the cover of the flow groove 500c may be integrated with the flow channel plate 502 or provided separately.

[0190] 21 , 23 and 25 , in addition, the integrated housing 500 further defines a first through hole 500 g and a third through hole 500 o for mounting the detection component 140 .

[0191] Referring to Figures 1 to 34, for example, the first motor 120 may include a first lead wire 128. The first lead wire 128 is electrically connected to a first winding within the first motor 120 or is part of the first winding. For example, the first winding may include a first winding body and a first lead wire. The first lead wire includes a root end and a tip end. The root end and the tip end here can be understood as the two ends of the first lead wire along its own length. The root end of the first lead wire is mounted on the stator core of the first motor 120. The first lead wire serves as the first lead wire 128. Alternatively, the tip end of the first lead wire is connected to the first lead wire. The second motor 220 may include a second lead wire 228. The second lead wire 228 is electrically connected to a second winding within the second motor 220 or is part of the second winding. For example, the second winding may include a second winding body and a second lead wire. The second lead wire includes a root end and a tip end. The root end and the tip end here can be understood as the two ends of the second lead wire along its own length. The root end of the second lead wire is installed on the stator core of the second motor 220. The second lead wire serves as the second lead wire 228. Alternatively, the tip of the second lead wire is connected to the second lead wire. The hydraulic energy supply device 600 may further include a first electrical connector 160 and a second electrical connector 260. The first electrical connector 160 and the second electrical connector 260 can both be understood as adapter copper bars. The adapter copper bars are suitable for being electrically connected to the motor controller 300. In other words, the first electrical connector 160 is connected to the first lead wire 128 and the motor controller 300. The second electrical connector 260 is connected to the second lead wire 228 and the motor controller 300. The electric energy of the power supply is converted by the motor controller 300 and provided to the first motor 120 and the second motor 220 respectively, thereby controlling the operating status of the first motor 120 and the second motor 220.

[0192] It is understood that the first electrical connector 160 can be plugged into the electrical connection portion of the motor controller 300. The first electrical connector 160 can be connected to the first lead wire 128 by plugging, welding, or fastener connection.

[0193] Referring to Figures 2 to 10 and 12 to 19 , a receiving groove 400 is further formed between the first motor 120 and the second motor 220. The first lead wire 128, the second lead wire 228, the first electrical connector 160, and the second electrical connector 260 are at least partially located in the receiving groove 400. Electrical components or devices such as the capacitor 375 of the motor controller 300 may also be accommodated in the receiving groove. Providing a receiving groove between the first motor 120 and the second motor 220 to accommodate a portion of the first lead wire 128, a portion of the second lead wire 228, the first electrical connector 160, the second electrical connector 260, and the capacitor 375 of the motor controller 300 improves space utilization along the axial direction D2 of the first motor 120 and the second motor 220, thereby increasing the integration of the motor controller. This also reduces space occupied in the first direction D1, improving the compactness of the structure in the first direction D1.

[0194] Referring to Figures 6, 7, 16, and 17, for example, the first motor 120 and the second motor 220 described above can both be three-phase motors. Accordingly, the first motor 120 and the second motor 220 each have a three-phase winding. The first lead wire 128 includes a three-phase first lead wire 128. The second lead wire 228 includes a three-phase second lead wire 228. The first electrical connector 160 includes a three-phase input portion and a three-phase output portion. The three-phase input portion is connected to the motor controller 300. The three-phase output portion is connected to the three-phase winding of the first motor 120. The structure of the second electrical connector 260 can be the same as that of the first electrical connector 160.

[0195] 6, 7, 16, and 17, further, the first motor 120 includes a three-phase first winding and a three-phase first lead wire 128. The first electrical connector 160 includes a three-phase first electrical connection terminal 161, and each phase first lead wire 128 is connected to each phase first winding and each phase first electrical connection terminal 161 in a one-to-one correspondence. Correspondingly, the second motor 220 includes a three-phase second winding and a three-phase second lead wire 228. The second electrical connector 260 includes a three-phase second electrical terminal, and each phase second lead wire 228 is connected to each phase second winding and each phase second electrical terminal in a one-to-one correspondence.

[0196] Furthermore, referring to Figures 6, 8, 10, 16, 18, and 19, the first electrical connector 160 can be configured as a first copper busbar. The first electrical connection terminal 161 and the second electrical connection terminal 169 can be configured as a structure made of copper. The first electrical connection terminal 161 and the second electrical connection terminal 169 of the same phase or electrically connected to the same winding can be configured as a single body. The second electrical connection terminal 169 can be connected to the motor controller 300 using a plug-in electrical connection. Correspondingly, referring to Figures 7, 8, 10, 17, 18, and 19, the second electrical connector 260 can be configured as a second copper busbar. The second electrical terminal and the fifth electrical terminal can be configured as a structure made of copper. The second electrical terminal and the fifth electrical terminal of the same phase or electrically connected to the same winding can be configured as a single body. The fifth electrical terminal can be connected to the motor controller 300 using a plug-in electrical connection.

[0197] The above-mentioned first motor 120 may include a first winding (not shown). The first winding is at least indirectly abutted, plugged or clamped with the first electrical connector. It can be understood that when the first lead wire 128 is part of the first lead wire of the first winding, the first winding is directly abutted, plugged or clamped with the first electrical connector 160. When the first lead wire 128 does not belong to the first winding but is connected to the first lead wire of the first winding, the first winding is indirectly abutted, plugged or clamped with the first electrical connector 160 through the first lead wire 128. The connection method of the second electrical connector 260 and the second motor 220 is similar.

[0198] The first electrical connector 160 or the second electrical connector 260 of the present disclosure will be described in detail below with reference to the examples shown in FIG. 26 to FIG. 34 .

[0199] Figures 26 to 28 illustrate an example of a first electrical connector 160. The first and second electrical connectors 160 and 260 have the same structure. The first electrical connector 160 will now be described. The first electrical connection end 161 of the first electrical connector 160 has a bump. After the first motor body 125 is assembled, the inner conductor of the first lead wire 128 presses against the bump, forming an electrically conductive connection. Because both sides of the bump are arc-shaped, the arc-shaped surfaces guide the first lead wire 128 during assembly, facilitating contact with the more protruding portion of the bump. When the inner conductor of the first lead wire 128 abuts the more protruding portion of the bump, the abutting force between the first electrical connector end 161 and the first lead wire 128 is greater, ensuring a reliable electrically conductive connection between the first electrical connector end 161 and the first lead wire 128. Because the inner conductor of the first lead wire 128 contacts the arc-shaped surface of the bump, the contact area is smaller, making this first electrical connection suitable for motors with lower rated currents.

[0200] Referring again to Figures 26 to 28, according to an embodiment of the present disclosure, the first electrical connection end 161 is constructed with a protrusion 162. The protrusion 162 here can be called a bump. One end of the first lead wire 128 is electrically connected to the first winding of the first motor 120 or is part of the first winding. The other end of the first lead wire 128 is extended along the first extension direction DY1 and abuts and conductively connected to the protrusion 162 along the second extension direction DY2. The first extension direction DY1 here can be parallel to or nearly parallel to the first direction D1. The first extension direction DY1 being nearly parallel to the first direction D1 can be understood as the angle between the first extension direction DY1 and the first direction D1 being in the range of 0° to 15°. The second extension direction DY2 intersects with the first extension direction DY1.

[0201] Referring to Figures 26 to 28 , for example, the first electrical connector 160 may include a first electrical connection end 161. The first electrical connector 160 is adapted to be electrically connected to the motor controller 300. One end of the first winding is abutted against or welded to the first electrical connection end 161. By abutting or welding the first winding to the first electrical connection end 161 of the electrical connector, the electrical connection structure between the first winding and the first electrical connector 160 can be simplified, thereby reducing processing costs and improving assembly efficiency.

[0202] Continuing to refer to Figures 26 to 28, for example, the first motor 120 may include a first stator core. The first winding may include a first winding body (not shown) and a first lead wire 128. The first winding body is fixedly connected to the first stator core. The first end of the first lead wire 128 is connected to the first winding body. The second end of the first lead wire 128 abuts against the first electrical connection end 161. Among them, the first winding body and the first lead wire 128 can be an integral part, or the first winding body and the first lead wire 128 can be two different wires. By abutting the first lead wire 128 of the first winding body against the first electrical connection end 161, the connection between the first winding body and the first electrical connection end 161 is achieved, and the connection method is simpler and convenient to operate.

[0203] Continuing to refer to Figures 26 to 28, further, the first electrical connection end 161 may include a protrusion 162. The side of the first lead wire 128 abuts against the protrusion 162. And the first lead wire 128 is inclined to the axial direction D2 of the first motor 120. If the first end of the first lead wire 128 is fixed relative to the stator or the first housing 121, and the first lead wire is parallel to or approximately parallel to the axial direction D2 of the first motor 120 in the initial state where it is not connected to the protrusion 162, the first lead wire 128 is abutted against the protrusion 162 by applying a force at the second end of the first lead wire 128, and finally the first lead wire 128 is inclined to the axial direction D2 of the first motor 120. At this time, the first lead wire 128 abuts against the protrusion 162 by relying on the elastic force after elastic deformation, so that the connection between the first lead wire 128 and the protrusion 162 is more reliable.

[0204] Continuing to refer to Figures 26 to 28, optionally, the first winding body and the first lead wire 128 are two different conductors. The hardness of the first lead wire 128 is greater than the hardness of the first winding body. The first end of the first lead wire 128 is at least indirectly fixed to the first stator core. The first electrical connection end 161 includes a protrusion. The first lead wire 128 abuts against the protrusion 162. On a plane perpendicular to the axial direction D2 of the first motor 120, the projection of the protrusion 162 partially overlaps with the projection of the first lead wire 128. Here, a reliable connection between the first lead wire 128 and the protrusion 162 is achieved by the first lead wire 128 being elastically deformed and abutting against the protrusion 162, which is more convenient and reliable.

[0205] It is understood that the first lead wire 128 may not be a straight wire in its natural state, but may be a wire extending along a curve. A curved wire may be such that when one end is fixed, the other end is deformed by force to abut against the protrusion, thereby achieving reliable abutment, which is also within the scope of the present disclosure.

[0206] In other embodiments, when the first lead wire overlaps the protrusion 162, there may be no interaction force between the first lead wire and the protrusion 162. In this case, other structures or process means such as welding may be used to ensure that the first lead wire can reliably abut or connect to the protrusion.

[0207] In the examples shown in Figures 26 and 28, the protrusion is arc-shaped. The first lead wire 128 abuts the protrusion at the vertex of the protrusion. In this way, the contact area between the first lead wire 128 and the protrusion is small, which can adapt to application scenarios where smaller currents pass through.

[0208] For example, the first electrical connection end 161 may include a plate (not labeled). The protrusion may be formed by a portion of the plate protruding toward one side (as shown in Figures 26 to 28), or the protrusion may be provided on a side surface of the plate. The manufacturing method may be flexibly selected based on actual needs to achieve the processing and manufacturing of the protrusion.

[0209] 26 and 27 , optionally, the first motor 120 includes three-phase first lead wires 128. The first electrical connector 160 includes three-phase first electrical connection terminals 161. Each phase first lead wire 128 is connected to each phase first electrical connection terminal 161 in a one-to-one correspondence. The first electrical connector 160 is configured as a copper busbar.

[0210] Referring to Figures 26 to 28 , first electrical connector 160 may also include a second electrical connector 169. Second electrical connector 169 is adapted to connect to motor controller 300. Optionally, a connecting plate 168 is provided between second electrical connector 169 and first electrical connector 161. The angle between connecting plate 168 and second electrical connector 169 is greater than 90° and less than 180°. This increases the distance between the second electrical connector and the first electrical connector.

[0211] Continuing with Figures 26 to 28, for example, three sequentially arranged connecting plates 168 are designated as a first connecting plate 168a, a second connecting plate 168b, and a third connecting plate 168c. The first electrical connection ends 161 connected to the first connecting plate 168a, the second connecting plate 168b, and the third connecting plate 168c are designated as first electrical terminals 161a, 161b, and 161c, respectively. The second electrical connection ends connected to the first connecting plate 168a, the second connecting plate 168b, and the third connecting plate 168c are designated as fourth electrical terminals 161a, 161b, and 161c, respectively. The first connecting plate 168a is tilted away from the first and second electrical terminals 161a, 161b. The second and third connecting plates 168b, 168c are tilted in the same direction as the first connecting plate 168a. The angle between the first connecting plate 168a and the fourth electrical terminal 161a is α1. The angle between the second connecting plate 168b and the fifth electrical terminal 161b is α2. The angle between the third connecting plate 168c and the sixth electrical terminal 161c is α3. α1 < α2 < α3. This arrangement ensures a safe distance between the three second electrical connection terminals 169 while reducing the distance between the three first electrical connection terminals 161, facilitating the installation of the three-phase first lead wires 128.

[0212] Optionally, the first winding includes a first winding body and a first lead wire 128. A first end of the first lead wire 128 is connected to the first winding body. The first electrical connector includes a first electrical connection terminal. The first electrical connection terminal includes a protrusion. The first lead wire 128 is welded to the protrusion 162. After the protrusion 162 is provided, welding is performed after the first lead wire 128 and the first electrical connection terminal 161 are aligned. This arrangement not only ensures a reliable connection between the lead wire and the first electrical connection terminal 161, but also facilitates the implementation of the welding process.

[0213] 26 and 27 , further, the first electrical connection end 161 is extended along a third extension direction DY3 , which intersects the first extension direction DY1 and the second extension direction DY2 .

[0214] Referring to Figures 26 to 28 , for example, within a plane perpendicular to the third extension direction DY3 and intersecting the protrusion 162, the first electrical connection end 161 may include a first relief portion 162a, a first guide portion 162b, and an abutment portion 162c, sequentially connected along the first extension direction DY1. The first relief portion 162a is spaced apart from the abutment portion 162c along the first extension direction DY1. The first relief portion 162a is closer to the first winding than the abutment portion 162c along the first extension direction DY1. The first relief portion 162a is spaced apart from the abutment portion 162c along the second extension direction DY2. The protrusion 162 includes a first guide portion 162b and an abutment portion 162c. When the first electrical connector 160 is moved along the first extension direction DY1 to a position away from the first lead wire 128, in a plane perpendicular to the first extension direction DY1, the end of the first lead wire 128 away from the winding of the first motor 120 is located between the first avoidance portion 162a and the abutment portion 162c along the second extension direction DY2; and the end of the first lead wire 128 away from the winding of the first motor 120 is spaced apart from the first avoidance portion 162a and the abutment portion 162c along the second extension direction DY2. When the first electrical connector 160 approaches the first lead wire 128 along the first extension direction DY1, or when the first lead wire 128 approaches the first electrical connector 160 along the first extension direction DY1, the end of the first lead wire 128 is offset from the first avoidance portion 162a along the second extension direction DY2. Therefore, the end of the first lead wire 128 first abuts the first guide portion 162b. Then, under the guidance of the first guide portion 162b, the end of the first lead wire 128 gradually moves toward the abutment portion 162c until the end of the first lead wire 128 moves to a position where it fully abuts the abutment portion 162c. During the process of the end of the first lead wire 128 moving from the first guide portion 162b to the abutment portion 162c, the compressive force between the first electrical connector 161 and the first lead wire 128 along the second extension direction DY2 gradually increases, thereby ensuring that the first lead wire 128 can reliably abut the abutment portion 162c and preventing poor contact.

[0215] It is understood that the cross-sectional shape of the first guide portion 162b can be a straight line, a curve, or a combination of a straight line and a curve. Furthermore, the connection between the first guide portion 162b and the first avoidance portion 162a, as well as the connection between the first guide portion 162b and the abutment portion 162c, can be in the form of a smooth transition to ensure that the end of the first lead wire 128 can smoothly slide from the first guide portion 162b to the abutment portion 162c.

[0216] Referring to Figures 26 to 28 , further, within a plane perpendicular to the third extension direction DY3 and intersecting the protrusion 162, the first electrical connection end 161 may further include a second guide portion 162d and a second relief portion 162e, connected in sequence along the first extension direction DY1. The second guide portion 162d and the second relief portion 162e are located on a side of the abutting portion 162c, away from the first guide portion 162b, along the first extension direction DY1. The second guide portion 162d is connected to the abutting portion 162c. The second relief portion 162e and the first relief portion 162a are located on the same side of the abutting portion 162c along the second extension direction DY2. The second relief portion 162e is spaced apart from the abutting portion 162c along the second extension direction DY2. The protrusion 162 also includes a second guide portion 162d. Therefore, in the example where the first electrical connection end 161 has the second guide portion 162d and the second avoidance portion 162e, the cross-sectional shape of the first electrical connection end 161 is close to an "Ω" shape or a "J" shape. The "Ω" shape or "J" shape here is only a shape that is relatively similar to the cross-sectional shape of the first electrical connection end 161 from the overall outline shape, and does not limit the cross-sectional shape of the first electrical connection end 161. By adding the second guide portion 162d and the second avoidance portion 162e, the first electrical connection end 161 can have two more bend structures, which is beneficial to improving the structural strength of the first electrical connection end 161, making it less likely to deform and fail when the first lead wire 128 abuts along the second extension direction DY2.

[0217] It can be understood that the cross-sectional shape of the second guide portion 162d here can be a straight line, a curve, or a combination of a straight line and a curve. In addition, the connection between the second guide portion 162d and the second avoidance portion 162e, as well as the connection between the second guide portion 162d and the abutment portion 162c, can be in the form of a smooth transition. The second guide portion 162d and the second avoidance portion 162e here may not contact the lead wire, and the second guide portion 162d may not guide the movement of the first lead wire 128 during the assembly process. Of course, in some cases, if the first electrical connection end 161 can be assembled with lead wires in two opposite directions along the first extension direction DY1, such as when sharing an electrical connection terminal with the lead wires of two motors at the same time, the function of the second guide portion 162d is the same as that of the first guide portion 162b, and the function of the second avoidance portion 162e is the same as that of the first avoidance portion 162a.

[0218] In some other embodiments, the second guide portion 162d and the second avoidance portion 162e may not be provided. Alternatively, the abutment portion 162c may be extended along the first extension direction DY1 in a direction away from the first avoidance portion 162a. This helps to increase the conductive contact area between the abutment portion 162c and the first lead wire 128.

[0219] Optionally, the first lead wire 128 is spaced apart from the first avoidance portion 162a along the second extension direction DY2. When the first lead wire 128 is connected to the first electrical connection end 161, the first lead wire 128 is spaced apart from the first avoidance portion 162a, ensuring that the abutting force between the first lead wire 128 and the abutting portion 162c along the second direction D2 is greater.

[0220] Figures 29 to 32 show another example of a first electrical connector 160 or a second electrical connector 260. The structures of the first and second electrical connectors 160 and 260 are identical. The first electrical connector 160 will now be described. The first electrical connector 160's first electrical connection end 161 includes an arc structure for receiving a tapered barrel 163. The center of the arc structure can be collinear with the end of the inner conductor of the first lead wire 128. To facilitate the assembly of the first lead wire 128 into the tapered barrel 163, the end of the tapered barrel 163 facing the first motor 120 is configured as a guide opening. This guide opening is flared, meaning its inner diameter gradually decreases as it moves away from the first motor 120. The maximum inner diameter of the guide opening is larger than the outer diameter of the conductor of the first lead wire 128. To ensure good contact between the first lead wire 128 and the tapered barrel 163 after assembly, the inner diameter of the end of the tapered barrel 163 facing away from the guide opening is smaller than the outer diameter of the conductor of the first lead wire 128. At the same time, the end of the conical barrel 163 away from the guide opening is provided with an opening structure. When the first lead wire 128 is assembled to the end of the conical barrel 163 with a smaller inner diameter, the opening structure will expand due to the radial extrusion force. This facilitates the first lead wire 128 to pass through the conical barrel 163, increases the contact area between the first lead wire 128 and the conical barrel 163, and also increases the stability of the connection structure between the conical barrel 163 and the first lead wire 128. In other words, after the first lead wire 128 is assembled to the conical barrel 163, it will be surrounded by the circumference of the conical barrel 163, achieving a good limit and a large contact area, which is beneficial for application in motors that need to transmit relatively large currents.

[0221] Referring to Figures 29 to 32 , the first electrical connection end 161 according to the present disclosure may include a connection hole 163a extending along a first extension direction DY1. The connection hole 163a has a first end 163b and a second end 163c facing opposite directions along the first extension direction DY1. The first end 163b is closer to the first cavity, i.e., closer to the first winding, than the second end 163c along the first extension direction DY1. The aperture of the second end 163c is smaller than or equal to the outer diameter of the conductor of the first lead wire 128. This ensures that the conductor of the first lead wire 128 can make conductive contact with the first electrical connection end 161 when passing through the connection hole 163a. ​​The aperture of the first end 163b is larger than the outer diameter of the conductor of the first lead wire 128. This facilitates the insertion of the conductor of the first lead wire 128 from the first end 163b into the connection hole 163a. ​​The first end 163b can guide the insertion of the conductor of the first lead wire 128 and may also be referred to as a guide opening. The conductor of the first lead wire 128 passes through the connection hole 163 a and is conductively connected to the first electrical connection end 161 .

[0222] Referring to Figure 32 , for example, the aperture of second end 163c is smaller than the outer diameter of the conductor of first lead wire 128. First electrical connection end 161 may include a connecting sleeve extending along a first extension direction DY1. A connecting hole 163a is provided through the connecting sleeve along the first extension direction DY1. A groove 163d is provided in the portion of the connecting sleeve corresponding to second end 163c. Groove 163d may also be referred to as an opening, a fracture, or a fracture mark. Groove 163d extends axially along the connecting sleeve or in the depth direction of connecting hole 163a to the end of second end 163c of the connecting sleeve. Groove 163d radially connects connecting hole 163a and the exterior. Groove 163d extends along the first extension direction DY1 to the end of the connecting sleeve distal to first end 163b. Groove 163d is configured to adaptively expand when the conductor of first lead wire 128 is passed through second end 163c and subjected to a compressive force in the radial direction of the connecting sleeve. It can be understood that when the grooves 163 d are opened by force, a portion of the connecting tube between adjacent grooves 163 d expands and deforms radially outward, and applies an extrusion pre-tightening force to the conductor of the first lead wire 128 .

[0223] Referring to Figure 32, the connecting tube is further provided with at least two grooves 163d. Each groove 163d is spaced apart along the circumference of the connecting tube. The provision of multiple grooves 163d helps to improve the balance of force distribution between the connecting tube and the first lead wire 128.

[0224] 29 and 32 , optionally, the at least two grooves 163 d are arranged at equal intervals along the circumference of the connecting cylinder.

[0225] In the example shown in FIG. 32 , the connecting cylinder is provided with three grooves 163 d .

[0226] Optionally, the connecting cylinder can be constructed as a metal cylinder capable of generating elastic deformation, which can increase the radial force between the connecting cylinder and the first lead wire 128, making the two more reliably connected, and helping to prevent conductive failure and extend service life.

[0227] Preferably, the first electrical connection end 161 is constructed of copper.

[0228] Referring to Figures 29 to 32, the first electrical connector 160 may further include a base 164. The base 164 is configured with a connection groove 164a. The connection groove 164a is adapted to accommodate the connection tube of the accommodating portion. The connection tube is fixedly connected to the base 164. The base 164 serves to support and secure the connection tube. The connection tube and the base 164 can be manufactured separately and then assembled together. Providing the connection groove 164a in the base 164 facilitates positioning the connection position of the connection tube on the base 164.

[0229] For example, the shape of the connecting groove 164a can be adapted to the outer shape of the connecting tube.

[0230] Optionally, both the base 164 and the connecting cylinder may be made of copper.

[0231] Alternatively, the connecting cylinder may be fixed to the base 164 by welding.

[0232] Referring to Figures 29 to 32 in conjunction with Figure 27 , the first electrical connector 160 may further include a second electrical connector 169. The second electrical connector 169 is adapted to connect to the motor controller 300. Optionally, a connecting plate 168 is provided between the second electrical connector 169 and the first electrical connector 161. The angle between the connecting plate and the second electrical connector 169 is greater than 90° and less than 180°. This increases the distance between the second electrical connector and the first electrical connector.

[0233] Continuing with Figures 29 to 32 and in conjunction with Figure 27 , for example, the three sequentially arranged connecting plates 168 are designated as a first connecting plate 168a, a second connecting plate 168b, and a third connecting plate 168c. The first electrical connection ends 161 to which the first connecting plate 168a, the second connecting plate 168b, and the third connecting plate 168c are connected are designated as first electrical terminals 161a, second electrical terminals 161b, and third electrical terminals 161c, respectively. The second electrical connection ends to which the first connecting plate 168a, the second connecting plate 168b, and the third connecting plate 168c are connected are designated as fourth electrical terminals 161a, fifth electrical terminals 161b, and sixth electrical terminals 161c, respectively. The first connecting plate 168a is tilted away from the first and second electrical terminals 161a, 161b. The second and third connecting plates 168b, 168c are tilted in the same direction as the first connecting plate 168a. The angle between the first connecting plate 168a and the fourth electrical terminal 161a is α1. The angle between the second connecting plate 168b and the fifth electrical terminal 161b is α2. The angle between the third connecting plate 168c and the sixth electrical terminal 161c is α3. α1 < α2 < α3. This arrangement ensures a safe distance between the three second electrical connection terminals 169 while reducing the distance between the three first electrical connection terminals 161, facilitating the installation of the three-phase first lead wires 128.

[0234] Figures 33 and 34 show another example of a first electrical connector 160 or a second electrical connector 260. The structures of the first and second electrical connectors 160 and 260 are identical. The first electrical connector 160 will now be described. The first electrical connector 160's first electrical connection end 161 is divided into two small copper bars, which together form a Y-shaped structure. A clip is formed at the end of the first electrical connection end 161 to facilitate assembly with the first lead wire 128. Furthermore, both small copper bars have an arc structure, and the center of the arc structure can be concentric with the end of the first lead wire 128. This ensures that the first lead wire 128 contacts the copper bar well when assembled in the arc structure. Furthermore, the diameter of the arc structure is slightly smaller than the outer diameter of the conductor of the first lead wire 128, ensuring a more secure contact between the two. The contact between the arc structure and the conductor of the first lead wire 128 can be arc-to-arc surface. This increases the contact area, which is conducive to transmitting larger currents. At the same time, the semicircular arc has a certain limiting effect on the three-phase wires of the motor.

[0235] Referring to Figures 33 and 34 , the first electrical connection terminal 161 according to this embodiment may include a base 165 and at least two clamping portions 166 arranged sequentially along a first extension direction DY1. Each clamping portion 166 is connected to the base 165. In a plane perpendicular to the first extension direction DY1, the ends of each clamping portion 166, distal from the base 165, are spaced apart along a second extension direction DY2 to form a clamping opening 167. One end of the first lead wire 128 is electrically connected to the first winding of the first motor 120. The other end of the first lead wire 128 extends along the first direction D1 and engages with the clamping opening 167. The first lead wire 128 is electrically connected to the clamping portions 166. In other words, the first electrical connection terminal 161 is electrically connected to the conductor of the first lead wire 128. The second extension direction DY2 intersects the first extension direction DY1. The first extension direction DY1 may be parallel to or nearly parallel to the first direction D1. The fact that the first extending direction DY1 is nearly parallel to the first direction D1 can be understood as that the angle between the first extending direction DY1 and the first direction D1 is in the range of 0° to 15°.

[0236] During installation, the first lead wire 128 can be inserted into the clamping opening 167 along the first extension direction DY1, or along the third direction D3, or the end of the first lead wire 128 can be placed into the clamping opening 167 along other directions or other movement trajectories. Then, if the clamping opening 167 is not sufficient to clamp the first lead wire 128 tightly, the clamping portion 166 can be bent manually or automatically to better fit the first lead wire 128. If the clamping opening 167 can clamp the first lead wire 128 tightly, the first lead wire 128 can be clamped directly using the clamping opening 167.

[0237] For example, in a plane perpendicular to the first extension direction DY1, the ends of each clamping portion 166 adjacent to the base portion 165 overlap. It can be understood that the extension direction of a portion of each clamping portion 166 intersects the extension direction of another portion of the clamping portion 166. In a plane perpendicular to the first extension direction DY1, the outline of each clamping portion 166 and the base portion 165 is approximately "Y"-shaped.

[0238] Furthermore, the first electrical connection end 161 extends along a third extension direction DY3. The base portion 165 is located at an end of the first electrical connection end 161 along the third extension direction DY3. The third extension direction DY3 intersects the first extension direction DY1 and the second extension direction DY2.

[0239] In the illustrated example, the first electrical connection end 161 may include two clamping portions 166. The extension directions of the two clamping portions 166 intersect with each other. The use of two clamping portions 166 is simple in structure and easy to manufacture, which not only saves space but also reduces costs.

[0240] Specifically, the first electrical connection terminal 161 is made of a metal sheet. The manufacturing process may include: cutting one end of a metal sheet into two partial metal sheets arranged side by side along the width direction, with the splitting gap extending along the length of the metal sheet and only passing through one end of the metal sheet; then, bending the two separated partial metal sheets in opposite directions along the thickness direction of the metal sheet to form the first electrical connection terminal 161. The metal sheet here is preferably a copper sheet.

[0241] It can be understood that in other examples not shown in the present disclosure, the first electrical connection end 161 may include three or more clamping portions 166 .

[0242] For example, a surface of the clamping portion 166 facing the clamping opening 167 is recessed to form a positioning groove 166 a. The positioning groove 166 a is used to accommodate a portion of the conductor of the first lead wire 128 to limit the first lead wire 128 from exiting the clamping opening 167.

[0243] In the example shown in FIG34 , the positioning groove 166 a is configured as an arc-shaped groove, which facilitates adaptation and fit with the conductor of the first lead wire 128 and increases the contact area.

[0244] Furthermore, the first electrical connection end 161 may include two clamping portions 166. The gap between the positioning grooves 166a of the two clamping portions 166 along the second extension direction DY2 is less than or equal to the outer diameter of the conductor of the first lead wire 128. Thus, when the conductor of the first lead wire 128 is at the clamping opening 167, the conductor of the first lead wire 128 can make surface contact with the inner surface of the positioning groove 166a. In particular, when the gap between the positioning grooves 166a of the two clamping portions 166 along the second extension direction DY2 is less than the outer diameter of the conductor of the first lead wire 128, the two clamping portions 166 can also apply a clamping force to the conductor of the first lead wire 128, thereby making the conductive connection between the first electrical connection end 161 and the conductor of the first lead wire 128 more reliable and stable.

[0245] Referring to Figures 33-34 in conjunction with Figure 27 , the first electrical connector 160 may further include a second electrical connector 169. The second electrical connector 169 is adapted to connect to the motor controller 300. Optionally, a connecting plate 168 is provided between the second electrical connector 169 and the first electrical connector 161. The angle between the connecting plate and the second electrical connector 169 is greater than 90° and less than 180°. This increases the distance between the second electrical connector and the first electrical connector.

[0246] Continuing with Figures 33-34 and in conjunction with Figure 27, for example, the three sequentially arranged connecting plates 168 are designated as a first connecting plate 168a, a second connecting plate 168b, and a third connecting plate 168c. The first electrical connection ends 161 to which the first connecting plates 168a, the second connecting plates 168b, and the third connecting plates 168c are connected are designated as first electrical terminals 161a, second electrical terminals 161b, and third electrical terminals 161c, respectively. The second electrical connection ends to which the first connecting plates 168a, the second connecting plates 168b, and the third connecting plates 168c are connected are designated as fourth electrical terminals 161a, fifth electrical terminals 161b, and sixth electrical terminals 161c, respectively. The first connecting plate 168a is tilted away from the first and second electrical terminals 161a, 161b. The second and third connecting plates 168b, 168c are tilted in the same direction as the first connecting plate 168a. The angle between the first connecting plate 168a and the fourth electrical terminal 161a is α1. The angle between the second connecting plate 168b and the fifth electrical terminal 161b is α2. The angle between the third connecting plate 168c and the sixth electrical terminal 161c is α3. α1 < α2 < α3. This arrangement ensures a safe distance between the three second electrical connection terminals 169 while reducing the distance between the three first electrical connection terminals 161, facilitating the installation of the three-phase first lead wires 128.

[0247] The structures of the first electrical connection end 161 of the above three embodiments can be implemented in any combination. Of course, within the scope foreseeable by those skilled in the art, the above three embodiments can be reasonably modified without requiring creative effort.

[0248] Referring to Figures 1 to 23, the motor controller 300 may also include an electrical control housing 310, a control circuit board 360, a drive circuit board 370, and busbar electrical terminals 330. The drive circuit board 370 and the control circuit board 360 are located within the electrical control housing 310. The drive circuit board 370 is closer to the first motor 120 and the second motor 220 than the control circuit board 360. The drive circuit board 370 is electrically connected to the control circuit board 360, the busbar electrical terminals 330, the first lead wire 128, and the second lead wire 228. The busbar electrical terminals 330 are at least partially exposed outside the electrical control housing 310 for electrical connection to the vehicle's power supply via an electrical connector or cable. When the busbar electrical terminal 330 is connected to the power supply of the vehicle, electric energy is provided to the drive board through the busbar point terminal. Under the control of the control circuit board 360, the drive circuit board 370 converts the electric energy and provides it to the first motor 120 via the first electrical connector 160 and the first lead wire 128 in sequence, and to the second motor 220 via the second electrical connector 260 and the second lead wire 228 in sequence, thereby realizing the control of the operating status of the first motor 120 and the second motor 220.

[0249] Continuing to refer to Figures 1 to 23, for example, a power device 371 is provided on the side of the driver circuit board 370 facing the first motor 120 and the second motor 220. The power device 371 arranged corresponding to the first motor 120 can be recorded as a first power device 376. The power device 371 arranged corresponding to the second motor 220 can be recorded as a second power device 377. The first power device 376 is attached to the first heat sink 122 via a heat-conducting structure such as thermal grease or a heat-conducting medium. The second power device 377 is attached to the second heat sink 222 via a heat-conducting structure such as thermal grease or a heat-conducting medium. That is, the first power device 376 of the motor controller 300 is arranged corresponding to the first heat sink 122 and is attached to the first heat sink 122 via thermal grease, so that the heat generated by the first power device 376 during operation is exchanged through the first heat sink 122. The second power device 377 of the motor controller 300 is disposed in correspondence with the second heat sink 222 and is attached to the second heat sink 222 via a heat-conducting structure such as thermal grease or a heat-conducting medium. This allows heat generated by the second power device 377 during operation to be transferred through the second heat sink 222. The first power device 376 and the second power device 377 can be silicon carbide MOS transistors or power switching transistors such as IGBTs. Both the first power device 376 and the second power device 377 can be power components formed by multiple power switching transistors.

[0250] Referring again to Figures 1 to 23 , the hydraulic pump disclosed herein is a bidirectional pump. It has a first opening and a second opening that are interconnected. Hydraulic oil can flow from the first opening to the second opening, or from the second opening to the first opening. The hydraulic power supply device 600 may further include a detection assembly 140 and an adapter assembly. Detection assembly 140 may include a first sensor 142 and a second sensor 143. The first sensor 142 is configured to detect the oil temperature at the first opening of the hydraulic pump. The second sensor 143 is configured to detect the oil temperature at the second opening of the hydraulic pump. One end of the adapter assembly 149 is electrically connected to the first and second sensors 142, 143. The other end of the adapter assembly 149 is electrically connected to the motor controller 300. By using the first sensor 142 to detect the oil temperature at the first opening of the hydraulic pump and the second sensor 143 to detect the oil temperature at the second opening of the hydraulic pump, both the first and second sensors 142, 143 are connected to the same adapter assembly 149. This simplifies the wiring structure, facilitates installation and maintenance, and helps reduce sealing difficulty and costs.

[0251] For example, at least part of the detection assembly 140 is disposed between the hydraulic pump and the motor. The detection assembly 140 here can fully utilize the axial space D2 between the hydraulic pump and the motor while ensuring that the oil temperature of the hydraulic pump can be detected, which is conducive to shortening the sensing circuit.

[0252] For example, adapter assembly 149 may include at least one of a first adapter plate 144 and a second adapter plate 148. First adapter plate 144 is located inside the motor. First adapter plate 144 is electrically connected to first sensor 142 and second sensor 143. Second adapter plate 148 is located outside the motor. Second adapter plate 148 is adapted to be removably electrically connected to motor controller 300.

[0253] In one example, the adapter assembly 149 only includes the second adapter plate 148. The second adapter plate 148 can be connected to the motor controller 300 via an electrical connector such as a low-voltage plug. The second adapter plate 148 can be electrically connected to the first sensor 142 and the second sensor 143 via a cable to achieve communication between the detection assembly 140 and the motor controller 300.

[0254] In another example, the adapter assembly 149 only includes the first adapter plate 144. One end of the first adapter plate 144 is electrically connected to the first sensor 142 and the second sensor 143, and the other end can be connected to the motor controller 300 via a cable. This can also achieve communication between the detection assembly 140 and the motor controller 300.

[0255] In a preferred embodiment, the adapter assembly 149 includes a first adapter plate 144, a second adapter plate 148, and an adapter post 145. Both the first adapter plate 144 and the second adapter plate 148 are circuit boards. One end of the adapter post 145 is electrically connected to the first adapter plate 144. The other end of the adapter post 145 is electrically connected to the second adapter plate 148. The adapter post 145 may include an inner conductor and an outer hard shell. The outer hard shell is fixed to the first adapter plate 144. One end of the inner conductor is electrically connected to the first adapter plate 144. The other end of the inner conductor is electrically connected to the second adapter plate 148. The second adapter plate 148 may be fixedly connected to the motor.

[0256] Furthermore, the first sensor 142 is a temperature sensor or a temperature and pressure sensor. The second sensor 143 is a temperature sensor or a temperature and pressure sensor. The first sensor 142 and the second sensor 143 can be the same sensor or different sensors.

[0257] For example, a hydraulic pump may include a pump housing. The pump housing may include a first connection hole and a second connection hole. The first sensor 142 is mounted in the first connection hole. The second sensor 143 is mounted in the second connection hole. By providing the first and second connection holes in the pump housing, the detection assembly 140 may be mounted within the pump housing, thereby improving the accuracy of the detection assembly 140 in detecting the oil temperature at the two openings of the hydraulic pump.

[0258] In a hydraulic power supply device 600 having two motors and two hydraulic pumps, the two motors are coaxially arranged opposite each other, namely a first motor 120 and a second motor 220. The first motor 120 includes a first housing 121. The second motor 220 includes a second housing 221. The first housing 121 and the second housing 221 are fixedly connected to each other or constructed as a single piece. The two hydraulic pumps are located at the outer ends of the two motors and are coaxially arranged with the motors. The two hydraulic pumps are denoted as the first hydraulic pump 110 and the second hydraulic pump 210. The first hydraulic pump 110 is connected to the first motor 120. The second hydraulic pump 210 is connected to the second motor 220. The pump housing of the first hydraulic pump 110 is the first pump housing. The pump housing of the second hydraulic pump 210 is the second pump housing. The first pump housing is provided with a first connecting hole 113 and a third connecting hole 114. The first connecting hole 113 is used to mount a first sensor 142. The third connecting hole 114 is used to mount a second sensor 143. The second pump housing is provided with a second connecting hole 114 and a fourth connecting hole 214. The second connection hole 114 is used to install the first sensor 142. The fourth connection hole 214 is used to install the second sensor 143.

[0259] Optionally, the first connecting hole is parallel to the second connecting hole, which facilitates processing and assembly of the sensor.

[0260] In the illustrated example, both the first connecting hole and the second connecting hole are parallel to the axial direction D2 of the hydraulic pump.

[0261] For example, at least one of the first sensor 142 and the second sensor 143 abuts the first adapter plate 144. It can be understood that the first sensor 142 abuts the first adapter plate 144, while the second sensor 143 is connected to the first adapter plate 144 in some other manner. Alternatively, it can be understood that the first sensor 142 is connected to the first adapter plate 144 in some other manner, while the second sensor 143 abuts the first adapter plate 144. Alternatively, it can be understood that both the first sensor 142 and the second sensor 143 abut the first adapter plate 144. This makes sensor installation simpler and more convenient, improving assembly efficiency.

[0262] Furthermore, a spring is provided at the end of at least one of the first sensor 142 and the second sensor 143. The spring abuts against the first adapter plate 144. Either the first sensor 142 or the second sensor 143 abuts against the first adapter plate 144 via the spring, or both the first sensor 142 and the second sensor 143 abut against the first adapter plate 144 via the spring. When installed, the abutment between the sensor and the first adapter plate 144 is achieved by the preload force of the spring, improving the reliability of the abutment and preventing poor contact caused by factors such as bumps and vibrations.

[0263] For example, the motor may include a housing. The housing is provided with a temperature sensing via. The temperature sensing via at least partially extends to the outside of the housing in a direction intersecting the axial direction D2 of the motor. The adapter assembly 149 is mounted on the temperature sensing via. By providing the temperature sensing via, at least a portion of the adapter assembly 149 can be accommodated, reducing the space occupied by the adapter assembly 149. At the same time, the adapter assembly 149 can also be fixed and protected.

[0264] In the illustrated example, the temperature sensing via extends radially through the motor housing. That is, the temperature sensing via extends into the housing's inner cavity. The aforementioned first and second connecting holes can connect to the housing's inner cavity along the motor's axial direction D2. This facilitates connecting the first and second sensors 142, 143 to the adapter assembly 149 within the motor's inner cavity.

[0265] Referring to Figures 1 to 23, in a hydraulic power supply device 600 having two motors and two hydraulic pumps, the two motors are a first motor 120 and a second motor 220, respectively, coaxially and arranged opposite each other. The first motor 120 includes a first housing 121. The second motor 220 includes a second housing 221. The first housing 121 and the second housing 221 are fixedly connected to each other or constructed as a single piece. In an embodiment in which the first housing 121 and the second housing 221 are assembled together by welding or other means, the first housing 121 defines a first through-hole 121e. The second housing 221 defines a third through-hole 221e. An adapter assembly 149 is respectively mounted in the first through-hole 121e and the third through-hole 221e. In an embodiment in which the first housing 121 and the second housing 221 are constructed as a single piece or as a single-piece housing 500, the single-piece housing 500 defines a first through-hole 500g and a third through-hole 500o. A switching component 149 is installed in each of the first via hole 500g and the third via hole 500o.

[0266] In the above-mentioned embodiment, a flow channel is formed inside the casing. The flow channel and a portion of the casing form a heat sink. The heat sink is arranged corresponding to the motor controller to be suitable for cooling the power devices in the motor controller. The temperature sensing via and the flow channel are both located on the same side of the casing and are spaced apart from each other. Along the axial direction D2 of the motor, the temperature sensing via is located at the end of the casing of the two motors away from each other, that is, at the outer end of the casing. Because the outer end of the casing is used to connect to the pump casing of the hydraulic pump. This helps to reduce the distance between the adapter assembly and the temperature sensor to facilitate installation between the two.

[0267] In addition, the housing also includes a motor sensor via. The hydraulic power supply device 600 may also include a motor sensor (not shown). The motor sensor's output terminal is at least partially inserted into the motor sensor via. The motor sensor's detection terminal is connected to the winding. The motor sensor is connected to the motor controller. The motor sensor is used to detect the winding temperature, allowing the vehicle controller to adjust the radiator's operating state based on the winding temperature. For example, when the winding temperature is high, the vehicle controller can control the radiator's cooling circuit to increase the circulation speed, thereby improving heat dissipation efficiency; when the winding temperature is low, the vehicle controller can control the radiator's cooling circuit to decrease the circulation speed, thereby reducing energy consumption. In an embodiment where the first and second housings are assembled together by welding or other means, the first housing has a second via 121s. The second housing has a fourth via 221s. A motor sensor is respectively installed in the second via 121s and the fourth via 221s. In an embodiment where the first and second housings are constructed as a single piece or an integrated housing, the integrated housing 500 has a second via 500t and a fourth via 500u. A motor sensor is installed in each of the second through hole 500t and the fourth through hole 500u.

[0268] For example, the motor sensor vias extend radially outward from the motor. They are arranged side by side with the temperature sensor vias on the same side of the housing. The motor sensor vias are spaced apart from the flow channel. This facilitates sensor assembly, simplifies wiring, and improves space utilization.

[0269] According to the present disclosure, the detection assembly 140 is provided on the first motor pump 100 and the second motor pump 200. The detection assembly 140 is used to detect the oil temperature of the first hydraulic pump 110 and / or the second hydraulic pump 210. The motor controller 300 may further include a signal connector 320. The signal connector 320 is connected to the electronic control housing 310. A control circuit board 360 is electrically connected to the signal connector 320 and the detection assembly 140. The signal connector 320 is adapted to be electrically connected to a vehicle control device. The detection assembly 140 can detect the oil temperature of the first hydraulic pump 110 and the second hydraulic pump 210 and transmit it to the control circuit board 360. The control circuit board 360 transmits the oil temperature to the vehicle control device via the signal connector 320. The control circuit board 360 can also receive control commands from the control device and control the operating status of the first motor 120 and the second motor 220 based on the control commands, thereby indirectly controlling the operating status of the first hydraulic pump 110 and the second hydraulic pump 210.

[0270] A detection assembly 140 is provided between the first motor 120 and the first hydraulic pump 110 and between the second motor 220 and the second hydraulic pump 210. The two detection assemblies 140 may be identical. The following description will take the application of the detection assembly 140 to the first motor pump 100 as an example.

[0271] Referring again to Figures 1 to 19 , the detection assembly 140 according to the present disclosure is disposed at the first hydraulic pump 110 or between the first hydraulic pump 110 and the first motor 120 . The detection assembly 140 may include a first sensor 142 and a second sensor 143 . The first hydraulic pump 110 is a bidirectional hydraulic pump and includes a first opening and a second opening for communicating oil. The first sensor 142 is used to detect the oil temperature at the first opening of the first hydraulic pump 110 . The second sensor 143 is used to detect the oil temperature at the second opening of the first hydraulic pump 110 . The hydraulic power supply device 600 may further include an adapter assembly 149 . One end of the adapter assembly 149 is electrically connected to the first sensor 142 and the second sensor 143 . The other end of the adapter assembly 149 is electrically connected to the motor controller 300 to transmit the detected oil temperature to the motor controller 300 . By connecting the first sensor 142 and the second sensor 143 via the adapter assembly 149 , the adapter assembly 149 can transmit the oil temperatures detected by the first and second sensors 142 and 143 to the motor controller 300 .

[0272] Similarly, the detection assembly 140 is also disposed between the second hydraulic pump 210 or the second hydraulic pump 210 and the second motor 220. The second hydraulic pump 210 is a bidirectional hydraulic pump and includes a first opening and a second opening suitable for circulating oil. The first sensor 142 is used to detect the oil temperature at the first opening of the second hydraulic pump 210. The second sensor 143 is used to detect the oil temperature at the second opening of the second hydraulic pump 210. The second motor 220 is provided with an adapter assembly 149. One end of the adapter assembly 149 is electrically connected to the first sensor 142 and the second sensor 143. The other end of the adapter assembly 149 is electrically connected to the motor controller 300 to transmit the detected oil temperature to the motor controller 300. By connecting the first sensor 142 and the second sensor 143 via the adapter assembly 149, the adapter assembly 149 can transmit the oil temperatures detected by the first sensor 142 and the second sensor 143 to the motor controller 300.

[0273] This can reduce the space occupied by the detection component 140, simplify the circuit structure, help reduce the difficulty of sealing, save costs and improve the compactness of the motor pump structure.

[0274] Referring to Figures 6 and 16 , for example, the first hydraulic pump 110 may include a first pump housing (not labeled). The first pump housing defines a first connecting hole 113 and a third connecting hole 114. Both the first connecting hole 113 and the third connecting hole 114 extend along the axial direction D2 of the first pump housing to the end surface of the first pump housing facing the first motor 120. A first sensor 142 is mounted within the first connecting hole 113. A second sensor 143 is mounted within the third connecting hole 114. Springs (not shown) are provided on the ends of the first and second sensors near the adapter assembly 149. This allows the first sensor 142 to be mounted directly within the first connecting hole 113, and the second sensor 143 to be mounted directly within the third connecting hole 114. The springs abut the first and second sensors 142 and 143 against the adapter assembly 149, making installation easier. The first housing 121 defines a first through-hole 121e. The first through-hole 121e extends to both the interior and exterior of the first housing 121 in a direction intersecting the axial direction D2 of the first motor 120. The adapter assembly 149 is provided in the first through hole 121e. Accordingly, referring to Figures 7 and 17, the second hydraulic pump 210 may include a second pump housing. The second pump housing is provided with a second connecting hole 213 and a fourth connecting hole 214. The second connecting hole 213 and the fourth connecting hole 214 both extend along the axial direction D2 of the second pump housing to the end face of the second pump housing facing the second motor 220. The first sensor 142 is connected to the second connecting hole 213. The second sensor 143 is connected to the fourth connecting hole 214. The second housing 221 is provided with a third through hole 221e. The third through hole 221e extends to the inside and outside of the second housing 221 along a direction intersecting with the axial direction D2 of the second motor 220. The adapter assembly 149 is provided in the third through hole 221e.

[0275] Furthermore, referring to Figures 6 and 16 , both the first connecting hole 113 and the third connecting hole 114 extend through the first pump housing along the axial direction D2 of the first pump housing. The first motor pump 100 may further include two sets of first sealing rings 141. The first sealing rings 141 are respectively sealed between the first sensor 142 and the first connecting hole 113, and between the second sensor 143 and the third connecting hole 114. This facilitates assembly of the first sensor 142 in the first connecting hole 113, and assembly of the second sensor 143 in the third connecting hole 114. The provision of the first sealing rings 141 improves the sealing between the first sensor 142 and the first connecting hole 113, and between the second sensor 143 and the third connecting hole 114. Accordingly, referring to Figures 7 and 17 , both the second connecting hole 213 and the fourth connecting hole 214 extend through the first pump housing along the axial direction D2 of the first pump housing. The second motor pump 200 may further include two sets of second sealing rings 241. The second sealing ring 241 is sealed between the first sensor 142 and the second connection hole 213, and between the second sensor 143 and the fourth connection hole 214. This facilitates the assembly of the first sensor 142 in the second connection hole 213, and the assembly of the second sensor 143 in the fourth connection hole 214. The provision of the second sealing ring 241 improves the sealing between the first sensor 142 and the second connection hole 213, and between the second sensor 143 and the fourth connection hole 214.

[0276] Referring to Figures 6 to 8, 16 to 18, and 23 and 24, for example, the adapter assembly 149 may include a first adapter plate 144, an adapter post 145, and a second adapter plate 148. The first adapter plate 144 is electrically connected to the first sensor 142 and the second sensor 143. Specifically, the first sensor 142 and the second sensor 143 may be abutted against the first adapter plate 144 via a spring. The adapter post 145 is disposed through the first through-hole 121e. One end of the adapter post 145 is electrically connected to the first adapter plate 144. The second adapter plate 148 is electrically connected to the other end of the adapter post 145. The second adapter plate 148 is adapted to be removably electrically connected to the motor controller 300 via an electrical connector, such as a low-voltage plug-in terminal. When the adapter assembly 149 is mounted on the first motor pump 100, the second adapter plate 148 is located outside the first motor 120. When the adapter assembly 149 is installed on the second motor pump 200 , the second adapter plate 148 is located outside the second motor 220 .

[0277] Referring to Figures 6 to 8 and 16 to 18 , the first motor pump 100 may further include a second sealing ring 146, which is sealed between the adapter assembly 149 and the first through-hole 121e. This improves the sealing between the adapter assembly 149 and the first through-hole 121e. Accordingly, the second motor pump 200 may further include a second sealing ring 146, which is sealed between the adapter assembly 149 and the third through-hole 221e. This improves the sealing between the adapter assembly 149 and the third through-hole 221e.

[0278] Referring again to Figures 6 to 8 and 16 to 18 , the first motor pump 100 may further include a first end cap assembly 130. The first end cap assembly 130 is connected to an end of the first hydraulic pump 110 that is distal from the first motor 120 along the axial direction D2 of the first hydraulic pump 110. Thus, the first motor 120, the first hydraulic pump 110, and the first end cap assembly 130 constitute the first motor pump 100. Accordingly, the second motor pump 200 may further include a second end cap assembly 230. The second end cap assembly 230 is connected to an end of the second hydraulic pump 210 that is distal from the second motor 220 along the axial direction D2 of the second hydraulic pump 210. Thus, the second motor 220, the second hydraulic pump 210, and the second end cap assembly 230 constitute the second motor pump 200.

[0279] Referring to Figures 1, 8, 10, 11, 18, 19, 20, 24, and 25, the motor controller 300 may also include a vent valve 340. The electrical control housing 310 is connected to the first housing 121 and the second housing 221. The vent valve 340 is connected to the electrical control housing 310. The vent valve 340 communicates with the interior and exterior of the electrical control housing 310 to balance the pressure inside and outside the electrical control housing 310. A certain degree of airtightness is typically required between the electrical control housing 310 and the first and second housings 121 and 221. When the motor controller 300 is operating, heat is generated within the motor controller 300, causing changes in the pressure within the motor controller 300 housing. By providing the vent valve 340 to balance the pressure inside and outside the electrical control housing 310, the operating state of the motor controller 300 can be improved.

[0280] 8 , 10 , 18 , 19 , 24 , and 25 , the motor controller 300 may further include a shielding plate 350. The shielding plate 350 is connected between the control circuit board 360 and the driving circuit board 370 along the first direction D1 to shield interference signals generated by the driving circuit board 370 from the control circuit board 360 and the driving circuit board 370.

[0281] As shown in Figures 1 to 19, a hydraulic power supply device 600 according to one embodiment of the present disclosure may include a first motor pump 100 and a second motor pump 200 arranged relative to each other along an axial direction D2, and a motor controller 300. Axial direction D2 is parallel to the axes of the first motor pump 100 and the second motor pump 200. The first motor pump 100 includes a first motor 120, a first hydraulic pump 110, and a first end cover assembly 130 arranged sequentially along the axial direction D2. The first motor 120 is located closer to the second motor pump 200. The first end cover assembly 130 is mounted to the chassis of a vehicle. The second motor pump 200 includes a second motor 220, a second hydraulic pump 210, and a second end cover assembly 230 arranged sequentially along the axial direction D2. The second motor 220 is located closer to the second motor pump 200. The second end cover assembly 230 is mounted to the chassis of a vehicle. The motor controller 300 is connected to the first motor pump 100 and the second motor pump 200. When the hydraulic power supply device 600 is installed in the vehicle, the motor controller 300 is located above the first motor pump 100 and the second motor pump 200. The motor controller 300 includes a signal connector 320, a busbar electrical terminal 330, and a vent valve 340. The signal connector 320 is used for communication with the vehicle. The busbar electrical terminal 330 is used to connect power to the motor. The vent valve 340 is used to balance the pressure difference within the electronic control housing 310.

[0282] 1 to 19 , the assembly process of the first motor pump 100 may include:

[0283] Step 1: Assemble the first resolver body 153, which already has the first resolver seal 151, through the first resolver through-hole 121h at the inner end of the first housing 121 via the first resolver retaining spring 152. When the first housing 121 is connected to the second housing 221, the inner end of the first housing 121 is closer to the second housing 221 than the outer end of the first housing 121.

[0284] Step 2: Install the first electrical connector 160 at the inner end of the first housing 121 .

[0285] Step three, install the adapter post 145 with the second sealing ring 146 and the first adapter plate 144 installed to the first through-hole 121e, fix the adapter post 145 to the first housing 121 through the fixing plate 147, and then weld the second adapter plate 148 to the signal connection terminal such as the signal pin of the adapter post 145. The second adapter plate 148 has a plug-in electrical connector for electrically connecting to the control circuit board 360.

[0286] Step 4: Install the first motor body 125 from the outer end of the first housing 121 into the interior of the first housing 121. After passing the first lead wire 128 on the first motor body 125 through the first wire hole 121g of the first housing 121 and installing the first insulating seal 129, connect the first lead wire 128 to the first electrical connection end 161 of the first electrical connector 160.

[0287] Step 5: Install the temperature sensor with the first sealing ring 141 installed to the first connecting hole 113 on the first hydraulic pump 110 .

[0288] Step 6: Seal and assemble the first hydraulic pump 110 to the outer end of the first housing 121. Positioning can be achieved by using the first pump housing limiting hole 121n provided at the outer end of the first housing 121 and the first pump housing positioning column 111 at the end of the first hydraulic pump 110 to cooperate with each other.

[0289] Step 7: Seal and assemble the first end cover assembly 130 at the end of the first hydraulic pump 110 away from the first housing 121. Thus, the assembly of the first motor pump 100 is completed.

[0290] In other words, the installation process of the first motor pump 100 may include: installing the first resolver body 153 with the first resolver seal 151 at the end of the first motor pump 100 facing the second motor pump 200 and securing it with the first resolver retaining spring 152. At the junction between the first and second motor pumps 100 and 200, a first electrical connector 160 corresponding to the first motor pump 100 is installed. The first lead wire 128 passes through the first insulating seal 129 and is connected to the first electrical connection end 161 of the first electrical connector 160 by abutting, plugging, or snapping. The second electrical connection end 169 of the first electrical connector 160 can be connected to the AC terminal 372 on the driver circuit board 370 by plugging or other means. The AC terminal 372 can be an AC connector adapted to plug into and mate with the second electrical connection end 169. Specifically, the second electrical connection end 169 plugs into the AC connector on the driver board, creating an electrically conductive connection. This connection method is similar to the connection between a plug and a socket on a household appliance, facilitating production and assembly. After installing the first motor body 125 from the end of the first motor pump 100 away from the second motor pump 200 along the axial direction D2, the first hydraulic pump 110, equipped with the first pump housing seal 112 and the first core seal 125a, is installed at the end of the first housing 121 away from the first motor pump 100 along the axial direction D2. Finally, the first end cover assembly 130 is installed at the end of the first hydraulic pump 110 away from the first hydraulic pump 110 along the axial direction D2. The first end cover assembly 130 here includes a first end cover 131 and a first end cover seal 132. The first end cover 131 can be fastened to the first pump housing of the first hydraulic pump 110 using fasteners such as bolts. The first end cover seal 132 is installed between the first hydraulic pump 110 and the first end cover 131. The first end cover 131 has first cantilever arms 131a extending in opposite directions in a direction intersecting the axis of the first motor pump 100. Specifically, the first cantilever arms 131a can be connecting ears.

[0291] The first motor pump 100 may be equipped with two sets of temperature sensors. One set of temperature sensors is used to detect the temperature of the first motor 120, and the other set of temperature sensors is used to detect the temperature of the first hydraulic pump 110. The temperature signals detected by both sets of temperature sensors can be transmitted to the control circuit board 360 via the same adapter pin 145 and the second adapter plate 148. Alternatively, the sensor used to detect the temperature of the first motor 120 can be placed side by side with the adapter pin 145. This saves space and reduces sealing and signal transfer costs. The two sets of temperature sensors can be the same or different.

[0292] The first resolver sealing ring 151 , the first resolver retaining spring 152 , and the first resolver body 153 constitute a portion of the first resolver assembly 150 .

[0293] 1 to 19 , the assembly process of the second motor pump 200 may include:

[0294] Step 1: Install the second resolver body 253, which has the second resolver seal ring 251 installed, into the second resolver through-hole 221h at the inner end of the second housing 221 via the second resolver retaining spring 252. When the second housing 221 is connected to the second housing 221, the inner end of the second housing 221 is closer to the first housing 121 than the outer end of the second housing 221.

[0295] Step 2: Install the second electrical connector 260 at the inner end of the second housing 221 .

[0296] Step three, install the adapter post 145 with the second sealing ring 146 and the first adapter plate 144 installed to the third through hole 221e, fix the adapter post 145 to the second housing 221 through the fixing plate 147, and then weld the second adapter plate 148 to the signal connection terminal such as the signal pin of the adapter post 145. The second adapter plate 148 has a plug-in electrical connector for electrically connecting to the control circuit board 360.

[0297] Step 4: Install the second motor body 225 from the outer end of the second housing 221 into the interior of the second housing 221. After passing the second lead wire 228 on the second motor body 225 through the second wire hole 221g of the second housing 221 and installing the second insulating seal 229, connect the second lead wire 228 to the second electrical terminal of the second electrical connector 260.

[0298] Step 5: Install the second temperature sensor with the second first sealing ring 141 installed to the second connecting hole 213 on the second hydraulic pump 210 .

[0299] Step 6: Seal and assemble the second hydraulic pump 210 to the outer end of the second housing 221. Positioning can be achieved by using the second pump housing limiting hole 221n provided at the outer end of the second housing 221 and the second pump housing positioning column 211 at the end of the second hydraulic pump 210 to cooperate with each other.

[0300] Step 7: Seal and assemble the second end cover assembly 230 at the end of the second hydraulic pump 210 away from the second housing 221. Thus, the assembly of the second motor pump 200 is completed.

[0301] In other words, the installation process of the second motor pump 200 may include: installing a second resolver body 253 with a second resolver seal 251 at the end of the second motor pump 200 facing the first motor pump 100 and securing it with a second resolver retaining spring 252. A second electrical connector 260 corresponding to the second motor pump 200 is installed at the junction between the first and second motor pumps 100 and 200. The second lead wire 228 passes through the second insulating seal 229 and connects to the second electrical terminal on the second electrical connector 260 by abutting, plugging, or snapping. The fifth electrical terminal of the second electrical connector 260 can be connected to the AC terminal 372 on the driver circuit board 370 by plugging or other means. The AC terminal 372 can be an AC connector adapted to plug into and mate with the fifth electrical terminal. Specifically, the fifth electrical terminal plugs into the AC connector on the driver board, creating an electrically conductive connection. This connection method is similar to the connection between a plug and a socket in household appliances, facilitating production and assembly. After the second motor body 225 is installed at the end of the second motor pump 200 that is away from the first motor pump 100 along the axial direction D2, the second hydraulic pump 210, equipped with the second pump housing seal 212 and the second movement seal 225a, is installed at the end of the second housing 221 that is away from the second motor pump 200 along the axial direction D2. Finally, the second end cover assembly 230 is installed at the end of the second hydraulic pump 210 that is away from the second hydraulic pump 210 along the axial direction D2. The second end cover assembly 230 includes a second end cover 231 and a second end cover 231 seal 232. The second end cover 231 can be fastened to the second pump housing of the second hydraulic pump 210 using fasteners such as bolts. The second end cover 231 seal 232 is installed between the second hydraulic pump 210 and the second end cover 231. The second end cover 231 has a second cantilever 231a that extends in both directions in a direction intersecting the axis of the second motor pump 200. The second cantilever 231a can specifically be a connecting lug. The structure of the second cantilever 231 a may be the same as or different from that of the first cantilever 131 a .

[0302] The second motor pump 200 may be equipped with two sets of second temperature sensors. One set of the second temperature sensors is used to detect the temperature of the second motor 220, and the other set of the second temperature sensors is used to detect the temperature of the second hydraulic pump 210. The temperature signals detected by both sets of second temperature sensors can be transmitted to the control circuit board 360 via the same adapter pin 145 and second adapter plate 148. Alternatively, the sensor used to detect the temperature of the first motor 120 can be placed side by side with the adapter pin 145. This saves space and reduces sealing and signal transfer costs. The two sets of second temperature sensors can be identical or different.

[0303] The second resolver sealing ring 251 , the second resolver retaining spring 252 , and the second resolver body 253 constitute a part of the second resolver assembly 250 .

[0304] Figures 1 to 19 illustrate the assembly structure of a hydraulic power supply device 600 according to one embodiment of the present disclosure. After the first motor 120 and the second motor 220 are assembled to form an integrated dual motor, the driver circuit board 370 is mounted on top of the integrated dual motor and electrically connected to the first electrical connector 160 and the second electrical connector 260, respectively. Furthermore, the power devices 371 on the driver circuit board 370 are tightly attached to the first heat sink 122 and the second heat sink 222 using thermally conductive silicone grease. Next, the control circuit board 360, equipped with the signal connector 320, is installed in the electronic control housing 310. A shielding plate 350 is then installed to shield areas of the control circuit board 360 that are susceptible to interference, thereby improving electromagnetic compatibility. After the second adapter board 148 and the signal connection terminals of the driver circuit board 370 are connected to the control circuit board 360, the electronic control housing 310 and the integrated dual motor are sealed and assembled together. Finally, install the busbar electrical terminal 330 and insert the copper busbar of the busbar electrical terminal 330 into the DC terminal 373 on the driver circuit board 370. The DC terminal 373 here can be a DC connection connector. This connection method between the busbar electrical terminal 330 and the DC connection connector is similar to the connection method between the first electrical connector 160 or the second electrical connector 260 and the control circuit board 360 mentioned above, similar to the connection method between the plug and socket of household appliances, and is simple to assemble and easy to operate. At the same time, the three-phase copper busbars of the first electrical connector 160 and the second electrical connector 260 are all placed upright to facilitate heat dissipation of the copper busbars. The three-phase copper busbars here can be understood as the first electrical connection end 161 and the second electrical connection end 169 of the first electrical connector 160 and the second electrical connector 260.

[0305] FIG8 is a schematic diagram of the internal structure of a hydraulic power supply device 600 according to an embodiment of the present disclosure. The diagram illustrates the internal layout of the motor controller 300 and the relationship between the first radiator 122, the second radiator 222, and the power device 371. The first motor 120 and the second motor 220 can have identical structures, and the first radiator 122 and the second radiator 222 can have identical structures. For ease of description, the first motor 120 and the second motor 220 are collectively referred to as motors, and the first radiator 122 and the second radiator 222 are collectively referred to as radiators. The radiator can be a heat pipe or a liquid-cooled heat sink assembly capable of circulating a heat exchange medium. A power device 371 is positioned above the radiators of both motors. The power device 371 can be an IGBT, a silicon carbide MOSFET, or other power device. Because the radiator is embedded deep within the motor housing and oil circulates within the housing, the power device 371 can effectively dissipate heat through the radiator, ensuring more favorable temperature conditions for the power device 371 during use. Above the power device 371 are the driver circuit board 370, shielding plate 350, control circuit board 360, and electronic control housing 310. The signal connector 320 of the control circuit board 360 extends through the electronic control housing 310 and outward. The electronic control housing 310 is also equipped with a breather valve 340 to prevent condensation and dissipate heat to balance pressure differences. Below both ends of the control circuit board 360 along the second direction D2 are a second adapter plate 148 and a fixing plate 147. The adapter post 145, with the second sealing ring 146 and the first adapter plate 144 installed, is installed in the temperature sensing holes 121e and 221e. The first adapter plate 144 is installed at the other end of the adapter post 145. The first adapter plate 144 is connected to and electrically connected to the first sensor 142 and the second sensor 143 via springs. Each motor pump is equipped with two sensors for detecting temperature. One sensor is the first sensor 142 and the other is the second sensor 143. First sensor 142 and second sensor 143 are used to detect the oil temperature at the inlet and outlet of the hydraulic pump. Another type of sensor can be a motor sensor, such as an NTC temperature sensor, which detects the temperature of the motor windings. The temperature signals detected by first sensor 142 and second sensor 143 are transmitted via first adapter plate 144 and adapter post 145 to second adapter plate 148, and then to control circuit board 360 via second adapter plate 148. This saves space and reduces sealing and signal transfer costs.

[0306] Referring to Figures 1 to 19, according to the hydraulic energy supply device 600 disclosed in the present invention, by friction welding the two motors, the connection between the first housing 121 and the second housing 221 is made more secure. Alternatively, the housings of the two motors are formed into one piece, which is not only more secure, but also can improve the sealing and assembly efficiency. By adding a first radiator 122 to the first housing 121 and a second radiator 222 to the second housing 221, the heat dissipation effect of the power device 371 of the motor controller 300 can be improved, thereby increasing the power of the motor under the same volume. At the same time, three embodiments of the first electrical connector 160 and the second electrical connector 260 are provided, which can well solve the connection between the lead wire of the motor winding and the motor controller 300. The temperature data is detected by setting a detection component 140, wherein the oil temperature of the hydraulic pump inlet and outlet is detected by the first sensor 142 and the second sensor 143, and the temperature of the motor winding is detected by the motor NTC temperature sensor. After the detection component 140 is assembled with the adapter component 149 including the first adapter plate 144, the adapter column 145, the second sealing ring 146, the fixing plate 147, and the second adapter plate 148, a connector that is easy to plug and install can be made. In addition, the first adapter component 149 of the first motor pump 100 and the second adapter component 149 of the second motor pump 200 are both connected to the control circuit board 360, which can save wiring. The DC bus electrical terminal 330 and the drive circuit board 370, as well as the first electrical connector 160, the second electrical connector 260 and the drive circuit board 370 are connected using a connector connection method, which can save assembly space and is conducive to automated production. At the same time, the connecting copper bars of the first electrical connector 160 and the second electrical connector 260 are arranged in three dimensions, which can improve the heat dissipation effect.

[0307] The present disclosure also provides a chassis system. The chassis system may include a shock absorber and a hydraulic power supply device 600 according to the above. The hydraulic power supply device 600 is fluidically connected to the shock absorber. The hydraulic power supply device 600 is used to achieve active vibration reduction of the shock absorber.

[0308] According to the chassis system provided by the present disclosure, the vibration reduction effect of the chassis system can be improved by applying the above-mentioned hydraulic energy supply device 600.

[0309] The present disclosure further provides a vehicle, which may include the hydraulic energy supply device 600 or the chassis system.

[0310] According to the vehicle of the present disclosure, by applying the above-mentioned hydraulic energy supply device 600 or the above-mentioned chassis system, it is helpful to improve the stability of the vehicle during driving and the comfort of the driver and passengers.

[0311] Referring to Figures 1 to 25 , for example, the vehicle may also include an air conditioner. The air conditioner fluid is connected to the first flow passage 121o, 500i and the second flow passage 221o, 500q, sharing a heat exchange medium with the first flow passage 121o, 500i and the second flow passage 221o, 500q. By connecting the hydraulic power supply device 600 with the air conditioner fluid and sharing the heat exchange medium, the structure is simplified and costs are reduced.

[0312] In one example, the second opening 121q is fluidically connected to the third opening 221p. The air conditioner is connected in series between the first opening 121p and the fourth opening 221q via a pipeline. That is, the first flow channel 121o, 500i, the second flow channel 221o, 500q, and the air conditioner are connected in series in sequence.

[0313] In another example, the air conditioner is connected in series between the first opening 121p and the second opening 121q via a pipe. The air conditioner is also connected in series between the third opening 221p and the fourth opening 221q via a pipe. That is, the first flow channel 121o, 500i and the second flow channel 221o, 500q are connected in parallel to the air conditioner.

[0314] Unless otherwise defined, the technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the art in the art of the present disclosure. The terms used herein are only for describing specific implementation purposes and are not intended to limit the present disclosure. Terms such as "setting" appearing in this document can mean that one component is directly attached to another component, or that one component is attached to another component through an intermediate component. Features described in this document in one embodiment may be applied to another embodiment alone or in combination with other features, unless the feature is not applicable in the other embodiment or otherwise specified.

[0315] The present disclosure has been described through the above embodiments, but it should be understood that the above embodiments are for illustrative and illustrative purposes only and are not intended to limit the present disclosure to the described embodiments. It will be understood by those skilled in the art that many more variations and modifications may be made based on the teachings of the present disclosure, and all of these variations and modifications fall within the scope of protection claimed by the present disclosure.

Claims

1. A motor assembly (700), characterized in that: The motor assembly (700) comprises: a motor controller (300); and A motor (120, 220), the motor (120, 220) being connected to the outside of the motor controller (300), the motor (120, 220) comprising a housing (121, 221), a portion of the housing (121, 221) facing the motor controller (300) being formed with a flow channel (121o, 221o).

2. The motor assembly (700) according to claim 1, characterized in that: The housing (121, 221) comprises: A shell body (121a, 221a), wherein a portion of the shell body (121a, 221a) facing the motor controller (300) is provided with a mounting groove (121b, 221b); a flow channel plate (124, 224), the flow channel plate (124, 224) being connected to the mounting groove (121b, 221b) to form a heat dissipation cavity (121t, 221t), the flow channel plate (124, 224) supporting the motor controller (300); and A flow guiding rib (121c, 221c), wherein the flow guiding rib (121c, 221c) is connected to the heat dissipation cavity (121t, 221t) so as to define the heat dissipation cavity (121t, 221t) as the flow channel (121o, 221o).

3. The motor assembly (700) according to claim 2, characterized in that: The flow channel plate (124, 224) comprises an auxiliary heat sink (124a, 224a) extending to the flow channel (121o, 221o).

4. The motor assembly (700) according to claim 3, characterized in that: The auxiliary heat sink (124a, 224a) is configured as a heat sink pin, and the flow channel plate (124, 224, 502) comprises a plurality of the heat sink pins, each of which is arranged at intervals along an arrangement path adapted to the flow channel (121o, 221o).

5. The motor assembly (700) according to claim 2, characterized in that: The guide rib (121c, 221c) and the shell body (121a, 221a) are integrally formed.

6. The motor assembly (700) according to any one of claims 1 to 5, characterized in that: The motor assembly (700) comprises two motors (120, 220), the two motors (120, 220) are coaxial and arranged opposite to each other, and the housings (121, 221) of the two motors (120, 220) are connected.

7. The motor assembly (700) according to claim 6, characterized in that: The two housings (121, 221) are respectively a first housing (121) and a second housing (221), wherein A sink (121j) is formed at the end of the first housing (121) close to the second housing (221); A boss (221j) is formed at the end of the second housing (221) close to the first housing (121), and the boss (221j) is adapted to the sink (121j). The boss (221j) is welded and fixed to the sink (121j) so as to fix the second housing (221) to the first housing (121).

8. The motor assembly (700) according to claim 6 or 7, characterized in that: The two housings (121, 221) are an integrated piece.

9. The motor assembly (700) according to any one of claims 6 to 8, characterized in that: A receiving groove (400) is formed at the connection between the two housings (121, 221), the notch of the receiving groove (400) faces the motor controller (300), and the receiving groove (400) is at least used to receive the capacitor (375) of the motor controller (300).

10. The motor assembly (700) according to claim 9, characterized in that: The two housings (121, 221) are respectively denoted as a first housing (121) and a second housing (221); a flow channel formed in the first housing (121) is a first flow channel (121o); a flow channel formed in the second housing (221) is a second flow channel (221o); the first flow channel (121o) and the second flow channel (221o) are separated by the receiving groove (400); the first flow channel (121o) and the second flow channel (221o) are connected at a connection point between the first housing (121) and the second housing (221).

11. The motor assembly (700) according to any one of claims 1 to 10, characterized in that: The motor controller (300) comprises an electric control housing (310) and a breathable valve (340), wherein the electric control housing (310) is connected to the housing (121, 221), the breathable valve (340) is connected to the electric control housing (310), and the breathable valve (340) is connected to the inside and outside of the electric control housing (310).

12. A hydraulic energy supply device (600) for active suspension, characterized in that: The hydraulic energy supply device (600) comprises a motor assembly (700) according to any one of claims 1 to 11.

13. A hydraulic energy supply device (600), characterized in that: The hydraulic energy supply device (600) further includes a first hydraulic pump (110), a second hydraulic pump (210) and a motor assembly (700); The motor assembly (700) is the motor assembly (700) according to any one of claims 6 to 11, and the two motors (120, 220) are respectively referred to as a first motor (120) and a second motor (220). The first motor (120) is connected to the first hydraulic pump (110) and is suitable for driving the first hydraulic pump (110), and the second motor (220) is connected to the second hydraulic pump (210) and is suitable for driving the second hydraulic pump (210).

14. The hydraulic energy supply device (600) according to claim 13, characterized in that: The housings (121, 221) of the two motors (120, 220) are respectively denoted as a first housing (121) and a second housing (221); the first housing (121) and the second housing (221) are connected; the first hydraulic pump (110) is disposed at an end of the first housing (121) away from the second housing (221); and the second hydraulic pump (210) is disposed at an end of the second housing (221) away from the first housing (121).

15. A chassis system, characterized in that: The chassis system comprises: shock absorbers; and The hydraulic energy supply device (600) according to any one of claims 12 to 14, wherein the hydraulic energy supply device (600) is fluidically connected to the shock absorber.

16. A vehicle, characterized in that: The vehicle comprises the motor assembly (700) according to any one of claims 1 to 11, or the hydraulic energy supply device (600) according to any one of claims 12 to 14, or the chassis system according to claim 15.

17. The vehicle according to claim 16, characterized in that The motor assembly (700) comprises: A first motor (120); A second motor (220); a first flow channel (121o), the first flow channel (121o) being disposed on the first motor (120); and a second flow channel (221o), wherein the second flow channel (221o) is disposed on the second motor (220), The vehicle further includes an air conditioner, the air conditioner fluid being connected to the first flow passage (121o) and / or the second flow passage (221o).

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