Motor pump assembly, suspension system, chassis assembly and vehicle

Abstract

The utility model relates to a motor pump assembly, a suspension system, a chassis assembly and a vehicle, the motor pump assembly comprises a shell, and the shell is provided with a containing cavity; at least part of the motor pump is arranged in the containing cavity; the cooling structure is provided with a cooling channel; the shell is provided with an inlet and an outlet, and the cooling channel is communicated with the inlet and the outlet so that an external liquid cooling medium can flow through the cooling channel to cool the motor pump.

Description

Technical Field

[0001] The present application relates to the field of vehicle technology, and in particular to a motor pump assembly, a suspension system, a chassis assembly, and a vehicle. Background Art

[0002] The motor pump assembly of a pure electric vehicle is usually configured to be controlled by a motor controller. The core components of the motor controller include high-power electronic components such as IGBTs. IGBT power devices generate high heat during operation, which causes the IGBT temperature to rise, resulting in more safety hazards.

[0003] In the prior art, the motor pump adopts air cooling to dissipate heat. However, the cooling system has poor heat dissipation capacity and cannot effectively dissipate heat for the motor pump, thereby affecting the performance of the motor pump. Utility Model Content

[0004] The embodiments of the present application provide a motor pump assembly, a suspension system, a chassis assembly, and a vehicle, which dissipate heat from the motor pump using liquid cooling to at least partially solve the above-mentioned technical problems.

[0005] In order to achieve the above-mentioned object, according to a first aspect of the present application, there is provided a motor pump assembly, comprising: a housing, wherein the housing is provided with an accommodating cavity;

[0006] a motor pump, at least a portion of which is disposed within the accommodating chamber;

[0007] A cooling structure, wherein the cooling structure is provided with a cooling channel;

[0008] The housing is provided with an inlet and an outlet, and the cooling channel is connected to the inlet and the outlet so that an external liquid cooling medium flows through the cooling channel to cool the motor pump.

[0009] Optionally, the cooling structure includes a cooling cavity arranged inside the shell, the external liquid cooling medium flows into the cooling cavity through the inlet, and the circulating medium flows out of the cooling cavity through the outlet; the cooling structure also includes a liquid inlet pipe and a liquid outlet pipe arranged outside the shell, one end of the liquid inlet pipe is provided with a liquid inlet, and one end of the liquid outlet pipe is provided with a liquid outlet, the liquid inlet pipe is connected to the inlet, and the liquid outlet pipe is connected to the outlet, the external liquid cooling medium flows into the liquid inlet pipe through the liquid inlet, and the circulating medium flows into the liquid outlet pipe through the outlet and flows out through the liquid outlet.

[0010] Optionally, the system further comprises a control module, wherein the control module is electrically connected to the motor pump and is located above the motor pump;

[0011] a cooling element, wherein the cooling element and the shell are combined to form the cooling cavity;

[0012] A heat conducting member is provided between the cooling member and the control module, and the liquid cooling medium inside the cooling cavity is provided to cool the motor pump and the control module simultaneously.

[0013] Optionally, the motor pump includes a first motor pump and a second motor pump, and along the long axis direction of the housing, the first motor pump and the second motor pump are coaxially arranged;

[0014] The cooling cavity includes a first cooling cavity and a second cooling cavity, the first cooling cavity is provided corresponding to the first motor, the second cooling cavity is provided corresponding to the second motor, the first cooling cavity is provided with a first inlet and a first outlet, and the second cooling cavity is provided with a second inlet and a second outlet;

[0015] The liquid inlet pipe is connected to the first inlet and the second inlet, and the liquid outlet pipe is connected to the second outlet and the first outlet; or the liquid inlet pipe is connected to the first inlet, the first outlet is connected to the second inlet, and the liquid outlet pipe is connected to the second outlet.

[0016] Optionally, the liquid inlet pipe includes a liquid inlet tee pipe, which includes a liquid inlet main pipe and two liquid inlet branch pipes, the two liquid inlet branch pipes are connected to one end of the liquid inlet main pipe, and the other end of the liquid inlet main pipe is set as the liquid inlet, one of the liquid inlet branch pipes is connected to the first inlet, and the other liquid inlet branch pipe is connected to the second inlet.

[0017] Optionally, the liquid outlet pipe includes a liquid outlet tee, and the liquid outlet tee includes a liquid outlet main pipe and two liquid outlet branches, the two liquid outlet branches are connected to one end of the liquid outlet main pipe, and the other end of the liquid outlet main pipe is set as the liquid outlet, one of the liquid outlet branches is connected to the first outlet, and the other liquid outlet branch is connected to the second outlet.

[0018] Optionally, the cross-sectional area of the inner hole of the two liquid inlet branches or the two liquid outlet branches is the same, the cross-sectional area of the inner hole of the liquid inlet main pipe or the liquid outlet main pipe is set to a, and the cross-sectional area of the inner hole of the liquid inlet branch pipe or the liquid outlet branch pipe is set to b, 1 / 2*a≤b≤a.

[0019] Optionally, the liquid inlet pipe includes a liquid inlet connecting pipe, which connects the liquid inlet branch and the second inlet; the liquid outlet pipe includes a liquid outlet connecting pipe, which connects the first outlet and the liquid outlet branch, and the liquid inlet connecting pipe and the liquid outlet connecting pipe are arranged on the same side of the shell.

[0020] Optionally, the liquid inlet tee pipe and the liquid outlet tee pipe are respectively located on both sides of the long axis direction of the shell.

[0021] Optionally, the liquid inlet tee pipe and the liquid outlet tee pipe are located on the central axis of the short axis direction of the shell.

[0022] Optionally, the liquid inlet pipe includes two liquid inlet bends, which are respectively arranged on both sides of the long axis direction of the shell, one of the liquid inlet bends is used to connect to one of the liquid inlet branches and the first inlet, and the other liquid inlet bend is used to connect to the other liquid inlet branch and the second inlet.

[0023] Optionally, the liquid outlet pipe includes two liquid outlet elbows, which are respectively arranged on both sides of the long axis direction of the shell, one of the liquid outlet elbows is used to connect one of the liquid outlet branches and the first outlet, and the other liquid outlet elbow is used to connect the other liquid outlet branch and the second outlet.

[0024] Optionally, a connecting pipe is further included outside the shell, and the connecting pipe connects the first outlet and the second inlet.

[0025] Optionally, it also includes a control module, which is electrically connected to the first motor pump and the second motor pump; a first cooling member and a second cooling member, the first cooling member and the shell form the first cooling cavity, and the second cooling member and the shell form the second cooling cavity; a first heat conductor and a second heat conductor, the first heat conductor is arranged between the first cooling member and the control module, and the second heat conductor is arranged between the second cooling member and the control module.

[0026] Optionally, the first cooling member or the second cooling member includes a cooling plate and at least one heat dissipation protrusion protruding from an inner surface of the cooling plate, and the at least one heat dissipation protrusion extends into the first cooling cavity or the second cooling cavity.

[0027] Optionally, at least one guide vane is provided in the first cooling cavity or the second cooling cavity.

[0028] Optionally, the cooling structure also includes a cooling channel arranged on the shell, and the wall where the cooling channel is located encloses the accommodating cavity. The cooling channel is provided with a third inlet and a third outlet, and the third inlet and the third outlet are both connected to the cooling cavity. The liquid cooling medium inside the cooling cavity flows into the cooling channel through the third inlet to cool at least part of the motor pump, and the circulating medium flows out through the third outlet.

[0029] Optionally, the cooling flow channel includes at least one layer of annular flow channel; or the cooling flow channel includes at least two fan-shaped flow channels.

[0030] According to a second aspect of the present application, a suspension system is provided, comprising a first shock absorber, a second shock absorber and the above-mentioned motor pump assembly, wherein the first motor pump is connected to the first shock absorber, and the second motor pump is connected to the second shock absorber.

[0031] According to a third aspect of the present application, a chassis assembly is also provided, comprising the above-mentioned motor pump assembly or the above-mentioned suspension system.

[0032] According to a fourth aspect of the present application, a vehicle is also provided, comprising the above-mentioned motor pump assembly or the above-mentioned suspension system, or the above-mentioned chassis assembly.

[0033] In the motor pump assembly of the embodiment of the present application, the motor pump is cooled by using liquid cooling, thereby effectively improving the cooling efficiency of the cooling structure for the motor pump.

[0034] Other features and advantages of the present application will be described in detail in the subsequent detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] To more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present application. Those skilled in the art can also derive other drawings based on these drawings without inventive effort.

[0036] In order to more completely understand the present application and its beneficial effects, the following description will be given in conjunction with the accompanying drawings, wherein the same drawing numbers represent the same parts in the following description.

[0037] Figure 1 is a cross-sectional structural diagram of a motor pump assembly provided in an exemplary embodiment of the present disclosure;

[0038] Figure 2 is a perspective view of a motor pump assembly provided in an exemplary embodiment of the present disclosure;

[0039] Figure 3 is an exploded view of a motor pump assembly provided in an exemplary embodiment of the present disclosure;

[0040] Figure 4 is a structural diagram of a three-way pipe provided in an exemplary embodiment of the present disclosure;

[0041] Figure 5 is a structural diagram of a bent pipe provided in an exemplary embodiment of the present disclosure;

[0042] Figure 6is a structural schematic diagram of a motor pump assembly provided in another exemplary embodiment of the present disclosure;

[0043] Figure 7 is a perspective view of a cooling member provided in an exemplary embodiment of the present disclosure;

[0044] Figure 8 is an exploded structural diagram of a motor pump assembly provided in another exemplary embodiment of the present disclosure;

[0045] Description of reference numerals:

[0046] 10. Motor pump assembly; 1. Housing; 110. Cooling chamber; 111. First cooling chamber; 112. Second cooling chamber; 121. First inlet; 122. First outlet; 123. Second inlet; 124. Second outlet; 13. Guide vane; 14. Accommodating chamber; 21. First motor pump; 211. First motor; 212. First hydraulic pump; 22. Second motor pump; 221. Second motor; 222. Second hydraulic pump; 31. First cooling element; 32. Second cooling element; 33. Cooling plate; 34. Heat dissipation protrusion; 41. Liquid inlet pipe; 411. Liquid inlet branch pipe; 41 2. Liquid inlet tee; 413. Liquid inlet elbow; 414. Liquid inlet connecting pipe; 415. Liquid inlet main pipe; 416. First section; 417. Second section; 42. Liquid outlet pipe; 421. Liquid outlet branch pipe; 422. Liquid outlet tee; 423. Liquid outlet elbow; 424. Liquid outlet connecting pipe; 425. Liquid outlet main pipe; 43. Liquid inlet; 44. Liquid outlet; 45. Connecting pipe; 5. Control module; 51. Power device; 61. First heat conducting member; 62. Second heat conducting member; 7. Cooling channel; 71. Third inlet; 72. Third outlet; 73. Inflow channel; 74. Outflow channel; DETAILED DESCRIPTION

[0047] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the embodiments described are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present application.

[0048] In a first aspect, the present application provides a suspension system comprising a motor-pump assembly, a shock absorber, an axle, and a wheel. In some embodiments, the suspension system is configured as an active suspension system capable of actively adjusting the damping and height of the suspension, wherein the power source for adjusting the height of the active suspension system is hydraulic energy provided by the motor-pump assembly.

[0049] The motor pump assembly includes a first motor pump and a second motor pump. The first motor pump and the second motor pump both include a motor and a hydraulic pump, wherein the motor is used to provide power and drives the hydraulic pump to move axially.

[0050] The shock absorbers include two shock absorbers, which are respectively connected to the first motor pump and the second motor pump. Each shock absorber is provided with a hydraulic chamber and a piston, and the piston divides the hydraulic chamber into two upper and lower hydraulic chambers.

[0051] One end of the two hydraulic lines is connected to the hydraulic pump of the first motor pump or the second motor pump, and the other end of the two hydraulic lines is connected to the upper and lower hydraulic chambers of the shock absorber. The piston is connected to the first motor pump or the second motor pump through the two hydraulic lines.

[0052] The vehicle's wheels are connected to axles, which are in turn connected to the piston structures of two shock absorbers. Two motor pumps are used to adjust the pressure difference between the upper and lower hydraulic chambers, thereby moving the pistons in the shock absorbers in the height direction, thus achieving active adjustment of the vehicle's suspension height.

[0053] The motor pump assembly of a pure electric vehicle is usually configured to be controlled by a motor control module. The core components of the motor control module include high-power electronic components such as IGBTs (insulated gate bipolar transistors). IGBT power devices generate high heat during operation, which causes the IGBT temperature to rise, resulting in more safety hazards.

[0054] At present, since the motor pump usually uses air cooling to dissipate heat for the motor pump, the heat dissipation capacity is poor, and the motor pump cannot be effectively cooled, which affects the performance of the motor pump.

[0055] In response to the above problems, in a second aspect, an embodiment of the present application further provides a motor pump assembly 10. In response to the above problems, the motor pump assembly 10 includes a housing 1, a motor pump and a cooling structure.

[0056] The housing 1 is provided with a receiving cavity, in which at least a portion of the motor pump is accommodated. The housing 1 is also provided with an inlet and an outlet.

[0057] The motor pump includes a motor and a hydraulic pump. The motor provides drive for the hydraulic pump, and the hydraulic pump is connected to the shock absorber and acts on the shock absorber.

[0058] The cooling structure is provided with a cooling channel, which is connected to the inlet and outlet of the housing 1 so that an external liquid cooling medium flows through the cooling channel to cool the motor pump. Compared with using air cooling to cool the motor pump, liquid cooling has a better cooling effect.

[0059] In some embodiments, as Figure 1 and Figure 2As shown, the cooling structure includes a cooling cavity arranged inside the shell 1 and a liquid inlet pipe 41 and a liquid outlet pipe 42 arranged outside the shell 1.

[0060] The cooling chamber includes an inlet and an outlet. External liquid cooling medium enters the cooling chamber through the inlet to cool the motor pump portion disposed inside the housing 1 , and the circulating medium flows out through the outlet.

[0061] The liquid inlet pipe 41 is connected to the inlet of the cooling chamber, and the liquid outlet pipe 42 is connected to the outlet of the cooling chamber. The liquid inlet pipe 41 is only provided with a liquid inlet 43 , and the liquid outlet pipe 42 is only provided with a liquid outlet 44 .

[0062] The external liquid cooling medium flows into the liquid inlet pipe 41 through the liquid inlet 43 and flows into the cooling cavity through the inlet to cool the motor pump. The circulating medium flows into the liquid outlet pipe 42 through the outlet of the cooling cavity and flows out through the liquid outlet 44.

[0063] It should be noted that the motor pump in the related art uses air cooling to dissipate heat, so there is no need to connect the cooling chamber of the motor pump to the vehicle's thermal management system. In the embodiment of the present application, by connecting the cooling chamber of the motor pump with an external liquid inlet pipe 41 and liquid outlet pipe 42, the liquid inlet pipe 41 and liquid outlet pipe 42 are both arranged outside the housing 1, which facilitates connecting the liquid inlet pipe 41 and liquid outlet pipe 42 to the vehicle's thermal management system. In addition, the liquid inlet pipe 41 is only provided with a liquid inlet port 43, and the liquid outlet pipe 42 is only provided with a liquid outlet port 44, which facilitates the vehicle's thermal management system to manage and control the heat dissipation of the motor pump assembly.

[0064] In some embodiments, the electrode pump assembly 10 further includes a control module 5 , a cooling element, and a heat conducting element.

[0065] The control module 5 is electrically connected to the motor pump and is configured to control the operation of the motor pump. The control module 5 includes a power device 51 , and the power device 51 includes an IGBT.

[0066] The cooling element is connected to one end of the housing 1 and forms a cooling cavity together with the housing 1 .

[0067] The heat conducting member is arranged between the cooling member and the control module 5 , and is used to conduct the heat generated by the control module 5 to the cooling member respectively, so that the cooling medium inside the cooling cavity can dissipate heat for the motor pump and the control module 5 at the same time.

[0068] In some examples, the thermal conductive part is made of a thermally conductive material with good thermal conductivity. Suitable thermally conductive materials can be one or more of thermally conductive silicone sheets, thermally conductive gel sheets, two-component thermally conductive gels, thermally conductive phase change materials, or high thermal conductivity and high temperature resistant epoxy potting resins.

[0069] In some embodiments, the motor pump assembly 10 includes a housing 1 , two motor pumps, two cooling elements, two heat conducting elements, a liquid inlet pipe 41 , and a liquid outlet pipe 42 .

[0070] The two motor pumps include a first motor pump 21 and a second motor pump 22 . The first motor pump 21 and the second motor pump 22 are arranged along the longitudinal direction of the housing 1 , and the first motor pump 21 and the second motor pump 22 are coaxially arranged.

[0071] The first motor pump 21 includes a first motor 211 and a first hydraulic pump 212, and the second motor pump 22 includes a second motor 221 and a second hydraulic pump 222. The first motor 211 and the second motor 221 are both disposed in the housing 1. The first motor 211 has a first end and a second end disposed along the long axis of the housing 1, and the second motor 221 has a first end and a second end disposed along the long axis of the housing 1. The first end of the first motor 211 and the second end of the second motor 221 are respectively disposed on opposite sides of the long axis of the housing 1, and the second end of the first motor 211 and the first end of the second motor 221 are respectively disposed close to the central axis of the housing 1 along the short axis.

[0072] The housing 1 is provided with two accommodating chambers to accommodate the first motor 211 and the second motor respectively. The housing 1 is also provided with two cooling chambers, namely the first cooling chamber 111 and the second cooling chamber 112. The first cooling chamber 111 is provided for the first motor 211, and the second cooling chamber 112 is provided for the second motor 221.

[0073] The two cooling elements include a first cooling element 31 and a second cooling element 32. The first cooling element 31 is connected to one end of the housing 1 and encloses the housing 1 to form a first cooling cavity 111. The first cooling cavity 111 is provided corresponding to the first motor 211 and is configured to dissipate heat from the first motor 211. The second cooling element 32 is connected to one end of the housing 1 and encloses the housing 1 to form a second cooling cavity 112. The second cooling cavity 112 is provided corresponding to the second motor 221 and is configured to dissipate heat from the second motor 221.

[0074] The first cooling chamber 111 is provided with a first inlet 121 and a first outlet 122, and the second cooling chamber 112 is provided with a second inlet 123 and a second outlet 124. The cooling medium enters the first cooling chamber 111 through the first inlet 121, undergoes sufficient heat exchange in the first cooling chamber 111, and forms a circulating medium that flows out through the first outlet 122. The cooling medium enters the second cooling chamber 112 through the second inlet 123, and undergoes sufficient heat exchange in the second cooling chamber 112, and forms a circulating medium that flows out through the second outlet 124.

[0075] The two heat conducting members include a first heat conducting member 61 and a second heat conducting member 62. The first heat conducting member 61 is arranged between the first cooling member 31 and the control module 5, and the second heat conducting member 62 is arranged between the second cooling member 32 and the control module 5. The first heat conducting member 61 and the second heat conducting member 62 are used to respectively dissipate the heat generated by the control module 5 to the first cooling member 31 and the second cooling member 32, so that the above-mentioned cooling structure can simultaneously dissipate heat for the first motor 211, the second motor 221 and the control module 5, thereby improving the performance of the motor pump assembly 10.

[0076] The control module 5 is electrically connected to the first motor pump 21 and the second motor pump 22 and is configured to control the operation of the first motor pump 21 and the second motor pump 22. The first motor pump 21 and the second motor pump 22 may share a control module 5, or each of the first motor pump 21 and the second motor pump 22 may use a control module. The control module 5 includes a high-power device 51, which includes an IGBT.

[0077] In some examples, such as Figure 2 As shown, the first inlet 121 , the first outlet 122 , the second inlet 123 and the second outlet 124 are all configured as through holes extending along the height direction of the housing 1 , thereby facilitating the circulation of the cooling medium.

[0078] The cooling medium flows into the first inlet 121 or the second inlet 123 through the liquid inlet pipe 41. The circulating medium in the first cooling chamber 111 flows into the liquid outlet pipe 42 through the first outlet 122, or the circulating medium in the second cooling chamber 112 flows into the liquid outlet pipe 42 through the second outlet 124. The liquid inlet pipe 41 and the first inlet 121 or the second inlet 123 can be directly fixedly connected or connected via multiple connecting pipes. The liquid outlet pipe 42 and the first outlet 122 or the second outlet 124 can be directly fixedly connected or connected via multiple connecting pipes.

[0079] Since the liquid inlet pipe 41 and the liquid outlet pipe 42 are arranged outside the shell 1, they can be further connected to the vehicle's thermal management system, and the liquid inlet pipe 41 is only provided with one liquid inlet 43, and the liquid outlet pipe 42 is only provided with one liquid outlet 44, so that the connecting pipelines between the liquid inlet pipe 41 and the liquid outlet pipe 42 and the thermal management system are simple, which is beneficial for the vehicle's thermal management system to control the heat dissipation performance of the motor pump assembly 10.

[0080] In some embodiments, continue to refer to Figure 2The liquid inlet pipe 41 includes two liquid inlet branches 411, one of which is connected to the first inlet 121 of the first cooling chamber 111, and the other is connected to the second inlet 123 of the second cooling chamber 112. The cooling medium flows into the liquid inlet pipe 41 through the liquid inlet 43 and flows into the first cooling chamber 111 and the second cooling chamber 112 through the two liquid inlet branches 411, respectively, so that the temperature of the cooling medium entering the first inlet 121 and the second inlet 123 is the same.

[0081] In some embodiments, continue to refer to Figure 2 The liquid outlet pipe 42 includes two liquid outlet branches, one of which is connected to the first outlet 122 of the first cooling chamber 111, and the other is connected to the second outlet 124 of the second cooling chamber 112. The circulating medium flowing out of the first cooling chamber 111 and the circulating medium flowing out of the second cooling chamber 112 are both merged into the same liquid outlet pipe 42, so that the first cooling chamber 111 and the second cooling chamber 112 have substantially the same cooling effect.

[0082] In some embodiments, continue to refer to Figure 2 and Figure 3 The liquid inlet pipe 41 includes a liquid inlet tee pipe 412 , a liquid inlet elbow 413 and a liquid inlet connecting pipe 414 .

[0083] The structure of the liquid inlet three-way pipe 412 is as follows Figure 4 As shown, the liquid inlet tee pipe 412 includes a liquid inlet main pipe 415 and two liquid inlet branch pipes 411. One end of the liquid inlet main pipe 415 is configured as a liquid inlet 43, and the other end of the liquid inlet main pipe 415 is connected to the two liquid inlet branch pipes 411. The end of one of the liquid inlet branch pipes 411 is connected to a liquid inlet elbow 413, which is fixedly connected to the first inlet 121. The end of the other liquid inlet branch pipe 411 is connected to a liquid inlet connecting pipe 414, and the end of the liquid inlet connecting pipe 414 is connected to the second inlet 123 through another liquid inlet elbow 413. The cross-sectional area of the inner holes of the two liquid inlet branches 411 is the same, and the cross-sectional area of the inner holes of the two liquid inlet branches 411 is set to b, and the cross-sectional area of the inner hole of the liquid inlet main pipe 415 is set to a, and 1 / 2*a≤b≤a. This makes the sum of the cross-sectional areas of the inner holes of the two liquid inlet branches 411 greater than the cross-sectional area of the inner hole of the liquid inlet main pipe 415, thereby increasing the flow rate of the cooling medium entering the interior of the two liquid inlet branches 411. The liquid inlet main pipe 415 is configured to be easy to disassemble and assemble, thereby facilitating the connection of the liquid inlet main pipe 415 to the vehicle's thermal management system. A sealing rib is provided at the connection between the liquid inlet branch pipe 411 and the liquid inlet connecting pipe 414, thereby facilitating a sealed connection between the liquid inlet branch pipe 411 and the liquid inlet connecting pipe 414.

[0084] The liquid inlet connecting pipe 414 extends from one side of the shell 1 to the other side of the shell 1. The liquid inlet connecting pipe 414 is used to connect the liquid inlet branch pipe 411 and the second inlet 123, so that the cooling medium flows into the same liquid inlet 43 and is provided to the first cooling chamber 111 and the second cooling chamber 112 respectively.

[0085] The liquid inlet elbow 413 includes two, such as Figure 3 As shown, one of the liquid inlet elbows 413 is used to connect one of the liquid inlet branches 411 with the first inlet 121 , and the other liquid inlet elbow 413 is used to connect the liquid inlet connecting pipe 414 with the second inlet 123 .

[0086] In some embodiments, as Figure 5 As shown, the liquid inlet elbow 413 includes a first section 416 and a second section 417. The inner diameter of the first section 416 and the inner diameter of the second connecting section 417 are the same, and the inner diameter of the first section 416 or the inner diameter of the second connecting section 417 is equal to the inner diameter of the liquid inlet branch pipe 411. The first section 416 is connected to the liquid inlet connecting pipe 414. The connection between the first section 416 and the liquid inlet connecting pipe 414 is provided with a wake-up rib, thereby forming a sealed connection between the liquid inlet elbow 413 and the liquid inlet connecting pipe 414. The second connecting section 417 is connected to the first inlet 121 of the housing 1. The connection between the second connecting section 417 and the housing 1 is provided with a smooth surface, which facilitates a fixed connection between the liquid inlet elbow 413 and the housing 1. The liquid inlet elbow 413 is provided to introduce the cooling medium into the first cooling chamber 111 or the second cooling chamber 112.

[0087] In some implementations, continue to refer to Figure 2 and Figure 3 The liquid outlet pipe 42 includes a liquid outlet tee pipe 422 , a liquid outlet elbow 423 and a liquid outlet connecting pipe 424 .

[0088] The structure of the liquid outlet three-way pipe 422 is as follows: Figure 4As shown, the liquid outlet tee pipe 422 includes a liquid outlet main pipe 425 and two liquid outlet branches 421. One end of the liquid outlet main pipe 425 is configured as a liquid outlet 44, and the other end of the liquid outlet main pipe 425 is connected to the two liquid outlet branches 421. One of the liquid outlet branches 421 is connected to a liquid outlet elbow 423, which is fixedly connected to the second outlet 124. The other liquid outlet branch 421 is connected to a liquid outlet connecting pipe 424, which is connected to the first outlet 122 through another liquid outlet elbow 423. The inner cross-sectional area of the two liquid outlet branch pipes 421 is the same, with the inner cross-sectional area of the two liquid outlet branch pipes 421 being set to b, and the inner cross-sectional area of the inner cross-sectional area of the liquid outlet main pipe 425 being set to a, with 1 / 2*a≤b≤a. This ensures that the sum of the inner cross-sectional areas of the two liquid outlet branch pipes 421 is greater than the inner cross-sectional area of the liquid outlet main pipe 425, thereby increasing the flow rate of the circulating medium within the two liquid outlet branch pipes 421. The liquid outlet main pipe 425 is designed to be easily disassembled and assembled, thereby facilitating its connection to the vehicle's thermal management system. Sealing ribs are provided at the connection between the liquid outlet branch pipes 421 and the liquid outlet connecting pipe 424, thereby facilitating a sealed connection between the liquid outlet branch pipes 421 and the liquid outlet connecting pipe 424.

[0089] The liquid outlet connecting pipe 424 extends from one side of the shell 1 to the other side of the shell 1. The liquid outlet connecting pipe 424 is used to connect the liquid outlet branch pipe 421 and the first outlet 122, so that the circulating medium flowing out of the first cooling chamber 111 and the second cooling chamber 112 flows into the same liquid outlet 44.

[0090] The liquid outlet elbow 423 includes two, such as Figure 3 As shown, one of the liquid outlet elbows 423 is used to connect one of the liquid outlet branch pipes 421 and the second outlet 124 , and the other liquid outlet elbow 423 is used to connect the liquid outlet connecting pipe 424 and the first outlet 122 .

[0091] In some embodiments, the structure of the liquid outlet elbow 423 is as follows: Figure 5As shown, the liquid outlet elbow 423 includes a first section 416 and a second section 417. The inner diameter of the first section 416 and the inner diameter of the second connecting section 417 are the same, and the inner diameter of the first section 416 or the inner diameter of the second connecting section 417 is equal to the inner diameter of the liquid inlet branch 411. The first section 416 is connected to the liquid outlet connecting pipe 424. The connection between the first section 416 and the liquid outlet connecting pipe 424 is provided with an annular rib, thereby forming a sealed connection between the liquid outlet elbow 423 and the liquid outlet connecting pipe 424. The second connecting section 417 is connected to the first outlet 122 of the housing 1. The connection between the second connecting section 417 and the housing 1 is provided with a smooth surface, which facilitates a fixed connection between the liquid outlet elbow 423 and the housing 1. The liquid outlet elbow 423 is provided to guide the circulating medium flowing out of the first cooling chamber 111 or the second cooling chamber 112 into the liquid outlet pipe 42.

[0092] Continue to refer Figure 2 and Figure 3 The liquid inlet connecting pipe 414 and the liquid outlet connecting pipe 424 are arranged on the same side of the longitudinal direction of the housing 1 and are fixed by a clamp. The liquid inlet tee 412 and the liquid outlet tee 422 are respectively located on either side of the longitudinal direction of the housing 1. This centralizes the external connecting piping structure of the motor pump assembly 10, facilitating assembly and manufacturing, and facilitating connection to the vehicle's thermal management system, thereby enhancing production operability.

[0093] In other optional embodiments, the liquid inlet three-way pipe 412 and the liquid outlet three-way pipe 422 are arranged in the short axis direction of the shell 1 and are located on the central axis of the short axis of the shell 1.

[0094] In another embodiment provided in this application, Figure 6 As shown, the motor pump assembly 10 includes a connecting pipe 45 for connecting the first cooling chamber 111 and the second cooling chamber 112. The connecting pipe 45 is arranged outside the shell 1, one end of the connecting pipe 45 is connected to the first outlet 122, and the other end of the connecting pipe 45 is connected to the second outlet 124. The cooling medium enters the first inlet 121 of the first cooling chamber 111 through the liquid inlet pipe 41, the first circulating medium enters the second inlet 123 of the second cooling chamber 112 through the first outlet 122 and the connecting pipe 45, and the second circulating medium flows into the liquid outlet pipe 42 through the second outlet 124.

[0095] Since the first cooling chamber 111 and the second cooling chamber 112 are connected in series via the connecting pipe 45 , the flow rates of the cooling media in the first cooling chamber 111 and the second cooling chamber 112 are the same, which is beneficial to improving the overall cooling effect of the motor pump assembly 10 .

[0096] Furthermore, since only the connecting pipe 45 needs to be provided between the first cooling chamber 111 and the second cooling chamber 112 , the provision of a three-way pipe can be omitted, thereby further simplifying the structure of the cooling system of the motor pump assembly 10 .

[0097] In some embodiments, as Figure 6 As shown, at least one guide plate 13 is provided inside the first cooling cavity 111 or the second cooling cavity 112. The at least one guide plate 13 is used to guide the cooling medium so that the cooling medium can be fully filled in the first cooling cavity 111 or the second cooling cavity 112 without bubbles affecting the heat dissipation effect.

[0098] In some embodiments, as Figure 7 As shown, the first cooling member 31 or the second cooling member 32 includes a cooling plate 33 and at least one heat dissipation protrusion 34. The heat dissipation protrusion 34 is provided to protrude relative to the inner surface of the cooling plate 33. The cooling plate 33 and the heat dissipation protrusion 34 are integrally formed. The heat dissipation protrusion 34 extends within the first cooling cavity 111 or the second cooling cavity 112. The heat dissipation protrusion 34 helps increase the contact area between the cooling plate 33 and the cooling medium, thereby improving heat dissipation efficiency.

[0099] In some embodiments, as Figure 8 As shown, an embodiment of the present application also provides a motor pump structure design scheme with a full liquid-cooled channel, a cooling channel 7 is provided on the periphery of the motor, and the wall where the cooling channel 7 is located encloses a receiving cavity for accommodating at least a part of the motor, and the cooling channel 7 is provided with a third inlet 71 and a third outlet 72, and the third inlet 71 and the third outlet 72 are arranged to be connected to the cooling cavity 110, and the cooling medium inside the cooling cavity 110 flows into the channel where the annular pipe is located through the third inlet 71, and performs sufficient heat exchange with the part of the motor surrounded by the cooling channel 7, so that the motor running at high load can obtain sufficient heat dissipation, ensuring that the motor can fully operate.

[0100] The third inlet 71 and the third outlet 72 are both set as through holes. The cooling channel 7 is located below the cooling cavity 110, so that the liquid cooling medium inside the cooling cavity 110 can flow into the annular pipe through the third inlet 71. The third outlet 72 is located above the bottom wall of the cooling cavity 110, so that the circulating medium inside the annular channel can flow back into the cooling cavity 110.

[0101] The cooling channel 7 includes an inflow channel 73 and an outflow channel 74. The inflow channel 73 is connected to the third inlet 71, and the outflow channel 74 is in circulation with the third outlet 74. The liquid cooling medium inside the cooling cavity 110 flows into the inflow channel 73 through the third inlet 71, and the circulating medium enters the outflow channel 74 and flows back into the cooling cavity 110 through the third outlet 72.

[0102] In some embodiments, the housing defining the motor's housing cavity 14 is configured as a double-layer plate, with the aforementioned cooling channel 7 disposed between the two layers. The cooling channel 7 can be a series of annular channels, with the inflow channel 73 and the outflow channel 74 located within separate annular channels. The cooling channel 7 can also be a plurality of fan-shaped channels, with adjacent fan-shaped channels separated by partition walls.

[0103] The motor comprises a stator and a rotor, which work together to convert electrical energy into mechanical energy. When energized, the stator winding generates a magnetic field, providing a power source for the motor's operation and supporting and securing the entire motor structure. The rotor is configured to generate torque under the action of the stator's rotating magnetic field, converting electrical energy into mechanical energy and driving the hydraulic pump. The stator generates significant heat during operation, especially under high loads. Therefore, the cooling channel 7 can be configured to surround the stator.

[0104] In a third aspect, the present application further provides a chassis assembly comprising the suspension system of the first aspect or the motor pump assembly of the second aspect. Since the chassis assembly possesses all the features and advantages of the motor pump assembly or suspension system described above, they will not be further described here.

[0105] In a fourth aspect, the present application further provides a vehicle comprising the suspension of the first aspect, the motor pump assembly of the second aspect, or the chassis assembly of the third aspect. For example, the vehicle may be an electric vehicle, a hybrid vehicle, or a gasoline vehicle. The vehicle possesses all the features and advantages of the aforementioned motor pump assembly, suspension system, or chassis assembly, and will not be further elaborated here.

[0106] In the description of this application, the terms "first" and "second" are used for descriptive purposes only and should not be understood to indicate or imply relative importance or implicitly specify the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more features. In the description of this application, "plurality" means two or more, unless otherwise specifically defined.

[0107] In the above embodiments, the description of each embodiment has its own focus. For parts that are not described in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0108] The embodiments, implementation methods and related technical features of the present application can be combined and replaced with each other without conflict.

[0109] The above are merely preferred embodiments of the present application and do not constitute any form of limitation to the present application. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present application without departing from the content of the technical solution of the present application are still within the scope of the technical solution of the present application.

Claims

1. A motor pump assembly, characterized in that: include: A housing (1), wherein the housing (1) is provided with a receiving cavity (14); a motor pump (21, 22), at least a portion of the motor pump (21, 22) being disposed in the accommodating chamber (14); A cooling structure, wherein the cooling structure is provided with a cooling channel; The housing (1) is provided with an inlet (121, 123) and an outlet (122, 124), and the cooling channel is connected to the inlet (121, 123) and the outlet (122, 124), so that an external liquid cooling medium flows through the cooling channel to cool the motor pump (21, 22).

2. The motor pump assembly according to claim 1, characterized in that The cooling structure comprises a cooling cavity (110) arranged inside the housing (1), an external liquid cooling medium flows into the cooling cavity (110) through the inlet (121, 123), and a circulating medium flows out of the cooling cavity (110) through the outlet (122, 124); The cooling structure further comprises a liquid inlet pipe (41) and a liquid outlet pipe (42) arranged outside the shell (1); one end of the liquid inlet pipe (41) is provided with a liquid inlet (43); one end of the liquid outlet pipe (42) is provided with a liquid outlet (44); the liquid inlet pipe (41) is connected to the inlets (121, 123); the liquid outlet pipe (42) is connected to the outlets (122, 124); an external liquid cooling medium flows into the liquid inlet pipe (41) through the liquid inlet (43); a circulating medium flows into the liquid outlet pipe (42) through the outlets (122, 124) and flows out through the liquid outlet (44).

3. The motor pump assembly according to claim 2, characterized in that It also includes a control module (5), the control module (5) is electrically connected to the motor pump (21, 22), and the control module (5) is located above the motor pump (21, 22); Cooling elements (31, 32), the cooling elements (31, 32) and the housing (1) enclose to form the cooling cavity (110); A heat conducting member (61, 62) is provided between the cooling member (31, 32) and the control module (5); and the liquid cooling medium inside the cooling cavity (111, 112) is configured to cool the motor pump (21, 22) and the control module (5) simultaneously.

4. The motor pump assembly according to claim 2, characterized in that The motor pumps (21, 22) include a first motor pump (21) and a second motor pump (22), and the first motor pump (21) and the second motor pump (22) are coaxially arranged along the long axis direction of the housing (1); The cooling chamber (110) comprises a first cooling chamber (111) and a second cooling chamber (112); the first cooling chamber (111) is provided corresponding to the first motor (211); the second cooling chamber (112) is provided corresponding to the second motor (221); the first cooling chamber (111) is provided with a first inlet (121) and a first outlet (122); the second cooling chamber (112) is provided with a second inlet (123) and a second outlet (124); The liquid inlet pipe (41) is connected to the first inlet (121) and the second inlet (123), and the liquid outlet pipe (42) is connected to the second outlet (124) and the first outlet (122); or, the liquid inlet pipe (41) is connected to the first inlet (121), the first outlet (122) and the second inlet (123) are connected, and the liquid outlet pipe (42) is connected to the second outlet (124).

5. The motor pump assembly according to claim 4, characterized in that The liquid inlet pipe (41) includes a liquid inlet tee pipe (412), and the liquid inlet tee pipe (412) includes a liquid inlet main pipe (415) and two liquid inlet branch pipes (411). The two liquid inlet branch pipes (411) are connected to one end of the liquid inlet main pipe (415), and the other end of the liquid inlet main pipe (415) is set as the liquid inlet (43). One of the liquid inlet branch pipes (411) is connected to the first inlet (121), and the other liquid inlet branch pipe (411) is connected to the second inlet (123).

6. The motor pump assembly according to claim 5, characterized in that The liquid outlet pipe (42) comprises a liquid outlet tee pipe (422), and the liquid outlet tee pipe (422) comprises a liquid outlet main pipe (425) and two liquid outlet branch pipes (421). The two liquid outlet branch pipes (421) are connected to one end of the liquid outlet main pipe (425), and the other end of the liquid outlet main pipe (425) is provided as the liquid outlet (44). One of the liquid outlet branch pipes (421) is connected to the first outlet (122), and the other liquid outlet branch pipe (421) is connected to the second outlet (124).

7. The motor pump assembly according to claim 6, characterized in that The cross-sectional areas of the inner holes of the two liquid inlet branches (411) or the two liquid outlet branches (421) are the same, the cross-sectional area of the inner hole of the liquid inlet main pipe (415) or the liquid outlet main pipe (425) is set to a, and the cross-sectional area of the inner hole of the liquid inlet branch pipe (411) or the liquid outlet branch pipe (421) is set to b, and 1 / 2*a≤b≤a.

8. The motor pump assembly according to claim 6, characterized in that The liquid inlet pipe (41) includes a liquid inlet connecting pipe (414), and the liquid inlet connecting pipe (414) is connected to the liquid inlet branch pipe (411) and the second inlet (123); the liquid outlet pipe (42) includes a liquid outlet connecting pipe (424), and the liquid outlet connecting pipe (424) is connected to the first outlet (122) and the liquid outlet branch pipe (421). The liquid inlet connecting pipe (414) and the liquid outlet connecting pipe (424) are arranged on the same side of the shell (1).

9. The motor pump assembly according to claim 8, characterized in that The liquid inlet three-way pipe (412) and the liquid outlet three-way pipe (422) are respectively located on both sides of the long axis direction of the shell (1).

10. The motor pump assembly according to claim 8, wherein: The liquid inlet three-way pipe (412) and the liquid outlet three-way pipe (422) are both located on the central axis of the short axis direction of the shell (1).

11. The motor pump assembly according to claim 5, characterized in that The liquid inlet pipe (41) comprises two liquid inlet elbows (413), which are respectively arranged on both sides of the long axis direction of the shell (1), one of the liquid inlet elbows (413) is used to connect to one of the liquid inlet branches (411) and the first inlet (121), and the other liquid inlet elbow (413) is used to connect to the other liquid inlet branch (411) and the second inlet (123).

12. The motor pump assembly according to claim 6, wherein: The liquid outlet pipe (42) comprises two liquid outlet elbows (423), wherein the two liquid outlet elbows (423) are respectively arranged on both sides of the long axis direction of the shell (1), one of the liquid outlet elbows (423) is used to connect one of the liquid outlet branch pipes (421) and the first outlet (122), and the other liquid outlet elbow (423) is used to connect the other liquid outlet branch pipe (421) and the second outlet (124).

13. The motor pump assembly according to claim 4, wherein: It also includes a connecting pipe (45) arranged outside the shell (1), and the connecting pipe (45) connects the first outlet (122) and the second inlet (123).

14. The motor pump assembly according to claim 3, wherein: The cooling member (31, 32) includes a cooling plate (33) and at least one heat dissipation protrusion (34) protruding from the inner surface of the cooling plate (33), and at least one heat dissipation protrusion (34) extends in the cooling cavity (110).

15. The motor pump assembly according to any one of claims 2 to 14, characterized in that: At least one guide plate (13) is provided in the cooling cavity (110).

16. The motor pump assembly according to claim 2, wherein: The cooling structure further comprises a cooling channel (7) provided on the shell, wherein the wall where the cooling channel (7) is located encloses the accommodating cavity (14), and the cooling channel (7) is provided with a third inlet (71) and a third outlet (72), wherein the third inlet (71) and the third outlet (72) are both connected to the cooling cavity (110), and the liquid cooling medium inside the cooling cavity (110) flows into the cooling channel (7) through the third inlet (71) to cool at least part of the motor pump, and the circulating medium flows out through the third outlet (72).

17. The motor pump assembly according to claim 16, wherein: The cooling flow channel (7) includes at least one layer of annular flow channel; or the cooling flow channel (7) includes at least two fan-shaped flow channels.

18. A suspension system, characterized in that: The invention comprises a first shock absorber, a second shock absorber and a motor pump assembly according to any one of claims 1 to 17, wherein the first motor pump (21) is connected to the first shock absorber, and the second motor pump (22) is connected to the second shock absorber.

19. A chassis assembly, characterized in that: The invention comprises the motor pump assembly according to any one of claims 1 to 17 or the suspension system according to claim 18.

20. A vehicle, characterized in that: It comprises the motor pump assembly according to any one of claims 1 to 17, or the suspension system according to claim 18, or the chassis assembly according to claim 19.

Images