Electric control assembly and vehicle

Abstract

The utility model provides an electric control assembly and a vehicle, and relates to the field of new energy automobiles. The electric control assembly comprises a shell assembly, a control assembly and a cooling assembly. The first shell is used for containing the first control unit, the second shell is used for containing the second control unit, the second shell is connected to the lower portion of part of the first shell, the lower portion of the first shell is in a step shape, and therefore when a motor and other components of the electric drive system are connected with the first shell, the stacking height is reduced; the control assembly shares the first cooling unit for heat dissipation, the second cooling unit is used for cooling the motor and the speed reducer, and the first cooling unit and the second cooling unit are communicated, so that the electric control assembly, the motor and the speed reducer are provided with cooling channels connected in series, and the cooling assembly is simple in layout and small in occupied space. Therefore, the space utilization rate of the electric control assembly is increased, and the integration degree of the electric control assembly and the electric drive system is improved.

Description

Technical Field

[0001] The present application relates to the technical field of new energy vehicles, and in particular to an electronic control assembly and a vehicle. Background Art

[0002] New energy vehicles have developed rapidly in recent years. They have the advantages of low emission pollution, low noise generated by the drive system, and low energy consumption. Based on traditional vehicles, new energy vehicles eliminate the engine, transmission, supply system and exhaust system, and highly integrate components such as motors, reducers, power batteries, motor controllers and on-board chargers to meet the normal operation of the vehicle's power system.

[0003] At present, the electric drive system of new energy vehicles includes an electronic control assembly, and a reducer and a motor arranged below the electronic control assembly. The electronic control assembly includes an upper shell, an intermediate shell and a lower shell connected from top to bottom. The upper shell is equipped with a high-voltage junction box and a vehicle control unit, the intermediate shell is equipped with a motor controller, the lower shell is equipped with an on-board charger and a DC-to-DC converter, and split cooling water channels are arranged in series in the upper, middle and lower shells to dissipate heat for each module.

[0004] However, the above-mentioned electronic control assembly occupies a large space, resulting in low space utilization and low integration between the electronic control assembly and the electric drive system. Utility Model Content

[0005] The present application provides an electric control assembly and a vehicle, which are used to solve the problems in the prior art that the conventional layout of the electric control assembly leads to low space utilization and low integration between the electric control assembly and the electric drive system.

[0006] In a first aspect, the present application provides an electric control assembly for an electric drive system, comprising a housing assembly, a control assembly, and a cooling assembly;

[0007] The housing assembly includes a first housing and a second housing, the first housing is used to be connected to the motor and the reducer of the electric drive system, and the second housing is connected below a portion of the first housing;

[0008] The control assembly comprises a first control unit and a second control unit, the first control unit is arranged in the first housing, and the second control unit is arranged in the second housing;

[0009] The cooling assembly includes a first cooling unit and a second cooling unit, the first cooling unit is arranged between the first shell and the second shell; the second cooling unit is arranged on the motor, and the first cooling unit is connected to the second cooling unit to cool the control assembly, the motor and the reducer.

[0010] In some technical solutions of the above-mentioned electronic control assembly, the first shell includes a first enclosure portion, a first bottom plate and a second bottom plate, the first bottom plate and the second bottom plate are connected, the first enclosure portion is surrounded by the first bottom plate and the second bottom plate, and the second shell is located below the first bottom plate.

[0011] In some technical solutions of the above-mentioned electric control assembly, the second shell includes a second enclosure portion and an insertion portion, the second enclosure portion is arranged below the first bottom plate away from the first enclosure portion, and the insertion portion is inserted into the second enclosure portion.

[0012] In some technical solutions of the above-mentioned electronic control assembly, the first cooling unit includes a first cooling member, the first cooling member is arranged on the first bottom plate, and the first cooling member has a connected cooling water path inlet and a cooling water path outlet.

[0013] In some technical solutions of the above-mentioned electronic control assembly, the first cooling unit also includes at least one liquid inlet and at least one liquid outlet, the liquid inlet is arranged on the side of the first enclosure portion facing the first bottom plate, and the liquid outlet is arranged on the side of the second bottom plate, the liquid inlet is connected to the cooling water circuit inlet, and the liquid outlet is connected to the cooling water circuit outlet.

[0014] In some technical solutions of the above-mentioned electronic control assembly, the second cooling unit includes a second cooling member and a connecting member, the second cooling member is used to be arranged at the bottom end of the housing of the motor, and the second cooling member is connected to the liquid outlet through the connecting member.

[0015] In some technical solutions of the above-mentioned electronic control assembly, the first control unit includes a motor controller, and the motor controller is arranged in the first housing.

[0016] In some technical solutions of the above-mentioned electric control assembly, the second control unit includes an on-board charger and a DC-to-DC converter, and the on-board charger and the DC-to-DC converter are both arranged on a side of the first base plate facing the plug-in portion.

[0017] In some technical solutions of the above-mentioned electronic control assembly, the first shell also includes a top plate, the top plate cover is arranged on the first enclosure part, and the first enclosure part has a mounting seat, the mounting seat is arranged one by one corresponding to the mounting holes on the motor and the reducer, so that the mounting seat is connected to the mounting hole by fasteners.

[0018] In a second aspect, the present application provides a vehicle, comprising an electric drive system and any one of the above-mentioned electronic control assemblies connected to the electric drive system.

[0019] The present application provides an electric control assembly and a vehicle, wherein the electric control assembly includes a first housing and a second housing, wherein the first housing is used to accommodate a first control unit of a control assembly, and the second housing is used to accommodate a second control unit of the control assembly, and the second housing is connected to the bottom of a portion of the first housing so that the bottom of the first housing is stepped, so that when the motor and other components of the electric drive system are connected to the first housing, the stacking height is reduced; by providing a first cooling unit and a second cooling unit, the control assembly shares the first cooling unit for heat dissipation, and the second cooling unit is used to cool the motor and the reducer, and by connecting the first cooling unit and the second cooling unit, the electric control assembly and the motor and the reducer have a cooling channel connected in series, so that the layout of the cooling assembly is simple and occupies a small space. Therefore, the present application increases the space utilization of the electric control assembly and improves the integration of the electric control assembly and the electric drive system by optimizing the layout of the housing assembly and the cooling assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present application and, together with the description, serve to explain the principles of the present application.

[0021] Figure 1 is a structural schematic diagram of a portion of the structure of a vehicle provided in an embodiment of the present application;

[0022] Figure 2 yes Figure 1 Schematic diagram of the left view structure;

[0023] Figure 3 yes Figure 1 A schematic diagram of the front view structure of

[0024] Figure 4 yes Figure 1 An exploded diagram showing the connection between the housing component of the central electronic control assembly and the electric drive system;

[0025] Figure 5 yes Figure 1 An exploded schematic diagram of the connection between the first housing and the second housing of the central electronic control assembly;

[0026] Figure 6 yes Figure 5 A schematic diagram of the structure of the first housing of the central electronic control assembly;

[0027] Figure 7 yes Figure 1 A schematic diagram of the structure of the cooling component of the electronic control assembly;

[0028] Figure 8 yes Figure 5 Schematic diagram of the structure of the second control unit.

[0029] Description of reference numerals:

[0030] 10-Electronic control assembly;

[0031] 100-housing assembly;

[0032] 110- first housing;

[0033] 111-first enclosure portion; 1111-mounting seat;

[0034] 112- first bottom plate;

[0035] 113- second bottom plate;

[0036] 114-top plate;

[0037] 120- second housing;

[0038] 121- second enclosure portion;

[0039] 122-plug-in portion;

[0040] 200-control components;

[0041] 210- first control unit;

[0042] 220 - second control unit;

[0043] 300-Cooling assembly;

[0044] 310-first cooling unit;

[0045] 311-first cooling element; 3111-cooling water channel outlet; 3112-cooling water channel inlet;

[0046] 312-liquid inlet;

[0047] 313-liquid outlet;

[0048] 320- second cooling unit;

[0049] 321- second cooling member;

[0050] 322-connector;

[0051] 20-motor;

[0052] 30-Reducer. DETAILED DESCRIPTION

[0053] The exemplary embodiments will be described in detail below, examples of which are shown in the accompanying drawings. When the following description refers to the drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements. The implementations described in the following exemplary embodiments do not represent all implementations consistent with the present application. Instead, they are only examples of devices and methods consistent with some aspects of the present application as detailed in the attached claims.

[0054] The terms "first", "second", etc. in the specification and claims of the embodiments of the present application and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the numbers used in this way can be interchanged where appropriate, so that the embodiments of the embodiments of the present application described here. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions.

[0055] In the embodiments of the present application, the terms "upper", "lower", "inside", "middle", "outside", "front", "back" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings. These terms are mainly intended to better describe the present application and its embodiments, and are not intended to limit the indicated devices, elements or components to have specific orientations, or to be constructed and operated in specific orientations. Moreover, in addition to being used to indicate orientations or positional relationships, some of the above terms may also be used to indicate other meanings. For example, the term "upper" may also be used to indicate a certain dependency or connection relationship in certain circumstances. For those of ordinary skill in the art, the specific meanings of these terms in the embodiments of the present application can be understood according to the specific circumstances.

[0056] In addition, the terms "disposed", "connected", and "fixed" should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral structure; it can be a mechanical connection, or an electrical connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be an internal connection between two devices, elements, or components. For those of ordinary skill in the art, the specific meanings of the above terms in the embodiments of the present disclosure can be understood according to specific circumstances.

[0057] It should be noted that the embodiments represented by "one embodiment", "an embodiment", "an exemplary embodiment", "some embodiments", etc. mentioned in the specification may include specific features, structures or characteristics, but not every embodiment may include the specific features, structures or characteristics. In addition, such phrases do not necessarily refer to the same embodiment. In addition, when describing specific features, structures or characteristics in conjunction with an embodiment, it is within the knowledge of those skilled in the art to implement such features, structures or characteristics in conjunction with other embodiments that are explicitly or not explicitly described.

[0058] In general, terms should be understood, at least in part, by the context in which they are used. For example, the terms "one or more" as used herein may be used to describe any feature, structure, or characteristic in a singular sense, or may be used to describe a combination of features, structures, or characteristics in a plural sense, depending, at least in part, on the context. Similarly, terms such as "an" may also be understood to convey singular usage or to convey plural usage, depending, at least in part, on the context.

[0059] New energy vehicles have developed rapidly in recent years, with the advantages of low emission pollution, low noise generated by the drive system, and low energy consumption. The electric drive system of new energy vehicles highly integrates components such as motors, reducers, power batteries, motor controllers and on-board chargers to meet the normal operation of the vehicle's power system.

[0060] In the prior art, the electric drive system of a new energy vehicle includes an electronic control assembly, and a reducer and a motor arranged below the electronic control assembly. The electronic control assembly includes an upper shell, an intermediate shell and a lower shell connected in sequence from top to bottom. A high-voltage junction box and a vehicle control unit are arranged in the upper shell, a motor controller is arranged in the intermediate shell, an on-board charger and a DC-to-DC converter are arranged in the lower shell, and split cooling water channels are arranged in series in the upper, middle and lower shells in sequence to dissipate heat from each module.

[0061] However, the layout of the above-mentioned electronic control assembly results in low space utilization of the electronic control assembly, and the internal cooling water channels of the electronic control assembly are arranged in a multi-layer split manner, which makes the overall structure of the electronic control assembly relatively large, further resulting in low integration between the electronic control assembly and the electric drive system.

[0062] Based on this, the present application provides an electric control assembly and a vehicle, wherein the electric control assembly is provided with a housing assembly including a first housing and a second housing, wherein the first housing is used to accommodate a first control unit of the control assembly, and the second housing is used to accommodate a second control unit of the control assembly, and the second housing is connected to the bottom of a part of the first housing so that the bottom of the first housing is stepped, so that when the motor and other components of the electric drive system are connected to the first housing, the stacking height is reduced; a cooling assembly including a first cooling unit and a second cooling unit is provided, the control assembly shares the first cooling unit for heat dissipation, and the second cooling unit is used to cool the motor and the reducer, and the first cooling unit and the second cooling unit are connected so that the electric control assembly and the motor and the reducer have a cooling channel connected in series, so that the layout of the cooling assembly is simple and occupies a small space. Therefore, the present application increases the space utilization of the electric control assembly and improves the integration of the electric control assembly and the electric drive system by optimizing the layout of the housing assembly and the cooling assembly.

[0063] The following describes the embodiments of the present utility model in conjunction with the accompanying drawings.

[0064] Figure 1is a structural schematic diagram of a portion of the structure of a vehicle provided in an embodiment of the present application; Figure 2 yes Figure 1 Schematic diagram of the left view structure; Figure 3 yes Figure 1 A schematic diagram of the front view structure of Figure 4 yes Figure 1 An exploded diagram showing the connection between the housing component of the central electronic control assembly and the electric drive system; Figure 5 yes Figure 1 An exploded schematic diagram of the connection between the first housing and the second housing of the central electronic control assembly; Figure 6 yes Figure 5 A schematic diagram of the structure of the first housing of the central electronic control assembly; Figure 7 yes Figure 1 A schematic diagram of the structure of the cooling component of the electronic control assembly; Figure 8 yes Figure 5 Schematic diagram of the structure of the second control unit.

[0065] like Figures 1 to 6 As shown, an embodiment of the present application provides an electric control assembly 10 for an electric drive system, including a housing assembly 100, a control assembly 200 and a cooling assembly 300; the housing assembly 100 includes a first housing 110 and a second housing 120, the first housing 110 is used to connect to the motor 20 and the reducer 30 of the electric drive system, and the second housing 120 is connected to the bottom of a portion of the first housing 110.

[0066] The control assembly 200 includes a first control unit 210 and a second control unit 220 . The first control unit 210 is disposed in the first housing 110 , and the second control unit 220 is disposed in the second housing 120 .

[0067] The cooling assembly 300 includes a first cooling unit 310 and a second cooling unit 320. The first cooling unit 310 is arranged between the first shell 110 and the second shell 120. The second cooling unit 320 is arranged on the motor 20, and the first cooling unit 310 is connected to the second cooling unit 320 to cool the control assembly 200, the motor 20 and the reducer 30.

[0068] In this application, if Figures 1 to 4As shown, the housing assembly 100 includes a first housing 110 and a second housing 120, and both the first housing 110 and the second housing 120 have a receiving cavity, and the receiving cavity of the first housing 110 and the receiving cavity of the second housing 120 are respectively used to assemble the first control unit 210 and the second control unit 220; specifically, the second housing 120 is connected to the bottom of part of the first housing 110 so that the bottom of the first housing 110 is distributed in a stepped manner, so that when the first housing 110 and the motor 20 of the electric drive system are connected, the fixing orientation can be adjusted according to the height adaptability of the components to save space; in addition, the electric drive system also includes a reducer 30 rigidly connected to the motor 20, and when the reducer 30 and the motor 20 are fixed to the first housing 110, the second housing 120 is located between the first housing 110 and the motor 20, so that when the housing assembly 100 is connected to the electric drive system, the stacking height is reduced, and the space under the first housing 110 is effectively utilized, thereby making the overall structure of the electric drive system more compact.

[0069] Furthermore, a first cooling unit 310 is provided between the first housing 110 and the second housing 120, and the first control unit 210 and the second control unit 220 are respectively located on both sides of the first cooling unit 310, and the second cooling unit 320 is provided on the motor 20, so that the first cooling unit 310 and the second cooling unit 320 are connected. Specifically, in the embodiment of the present application, the first cooling unit 310 is connected to the input end of the thermal management cooling system of the vehicle so that the first cooling unit 310 flows into the cooling medium, and the cooling medium flows through the first cooling unit 310 to the second cooling unit 320 to form a cooling channel, that is, the control component 200, the motor 20 and the reducer 30 are cooled in turn, and the cooling medium after heating finally flows into the output end of the thermal management cooling system, that is, the heat exchange device, for cooling, so as to dissipate heat again. Exemplarily, the cooling medium can be water or a mixture with propylene glycol. The specific type of cooling medium depends on the actual heat dissipation requirements and the ambient temperature of use, and this embodiment does not limit this.

[0070] In this way, the first control unit 210 and the second control unit 220 share the first cooling unit 310, and the second cooling unit 320 of the motor 20 does not need to be separately connected to the input end of the thermal management cooling system. By connecting the first cooling unit 310 and the second cooling unit 320 in series, the electronic control assembly 10, the motor 20 and the reducer 30 have cooling channels in series, so that the layout of the cooling component 300 is simple and occupies a smaller space.

[0071] In this way, by optimizing the layout of the housing assembly 100 and the cooling assembly 300 , the space utilization of the electric control assembly 10 is increased, and the integration of the electric control assembly 10 and the electric drive system is improved.

[0072] In some embodiments, the first shell 110 includes a first enclosure portion 111, a first bottom plate 112 and a second bottom plate 113, the first bottom plate 112 and the second bottom plate 113 are connected, the first enclosure portion 111 is surrounded by the first bottom plate 112 and the second bottom plate 113, and the second shell 120 is located below the first bottom plate 112.

[0073] like Figures 2 to 5 As shown, the first shell 110 includes a first enclosure portion 111, a first bottom plate 112 and a second bottom plate 113. Exemplarily, in the embodiment of the present application, the first enclosure portion 111 is a quadrilateral structure, and correspondingly, the first bottom plate 112 and the second bottom plate 113 can be connected by integral molding or the like to form a quadrilateral structure matching the bottom of the first enclosure portion 111. The first enclosure portion 111 is surrounded by the first bottom plate 112 and the second bottom plate 113 by welding or the like, thereby forming a accommodating cavity for assembling the first control unit 210; in addition, the first enclosure portion 111 is provided with a plurality of output end interfaces of the first control unit 210, so that the first control unit 210 is electrically connected to the corresponding controlled module.

[0074] Specifically, Figure 4 and Figure 5 As shown, the second shell 120 is located on the side of the first bottom plate 112 away from the first enclosure 111, so that the space below the first bottom plate 112 is occupied to set the second shell 120, and the space below the second bottom plate 113 is not occupied, and the first shell 110 is distributed in a stepped manner, that is, when the motor 20 and the reducer 30 are connected below the first shell 110, the fixed position can be adjusted according to the height adaptability of the components to reduce the stacking height below the first shell 110, thereby effectively utilizing the space, and further making the overall structure of the electronic control assembly 10 after being connected to the electric drive system more compact.

[0075] In some embodiments, the second shell 120 includes a second enclosure portion 121 and an inserting portion 122 . The second enclosure portion 121 is disposed below the first bottom plate 112 away from the first enclosure portion 111 , and the inserting portion 122 is inserted into the second enclosure portion 121 .

[0076] Continue as Figure 4 and Figure 5As shown, the second housing 120 is provided with a second enclosure 121 below the first bottom plate 112 away from the first enclosure 111, so that the first bottom plate 112 and the second enclosure 121 jointly form a housing cavity for assembling the second control unit 220. Correspondingly, a mounting hole is provided on the side of the first bottom plate 112 facing the second control unit 220 to facilitate the fixing of the second control unit 220 in the second housing 120. In addition, the second enclosure 121 is provided with a plurality of output end interfaces of the second control unit 220 so that the second control unit 220 is electrically connected to the corresponding controlled module. It should be noted that the structure of the second enclosure 121 can match the overall structure of the second control unit 220, and ensure that the size of the second enclosure 121 is minimized as much as possible on the basis of being able to accommodate the second control unit 220, so as to save space below the first housing 110. The specific size setting depends on the actual application, and the embodiment of the present application is not limited to this.

[0077] Furthermore, the second housing 120 further includes a plug-in portion 122. For example, a plug-in strip is provided on the plug-in portion 122. Correspondingly, a plug-in slot is provided on the side of the second enclosure 121 away from the first bottom plate 112. The plug-in strip is plugged into the plug-in slot. In this way, the plug-in portion 122 is detachably connected to the second enclosure 121, so that the plug-in portion 122 and the second enclosure 121 seal the second control unit 220 in the second housing 120 to enhance the protection of the second control unit 220. By providing the plug-in portion 122, the second control unit 220 can be separately disassembled and assembled, so that the present application can be quickly disassembled and assembled when the module is repaired later without disassembling the entire electric control assembly 10 while having a high degree of integration.

[0078] In some embodiments, the first cooling unit 310 includes a first cooling member 311 , which is disposed on the first bottom plate 112 , and has a cooling water path inlet 3112 and a cooling water path outlet 3111 that are connected.

[0079] In this application, if Figures 5 to 7 As shown, the first cooling unit 310 includes a first cooling member 311. Correspondingly, a through hole for installing the first cooling member 311 is provided on the first base plate 112. The first cooling member 311 can be nested and assembled on the first base plate 112 by fasteners, etc., so that one side of the first cooling member 311 faces the first shell 110 and contacts the heat generating module of the first control unit 210, and the other side of the first cooling member 311 faces the second shell 120 and contacts the heat generating module of the second control unit 220, so that the first control unit 210 and the second control unit 220 share the first cooling member 311 for heat dissipation.

[0080] In the specific setting, the first cooling member 311 can be a liquid cooling plate, etc., which has a hollow cavity inside, and has a connected cooling water path inlet 3112 and a cooling water path outlet 3111 on the liquid cooling plate. The cooling water path inlet 3112 is connected to the input end of the thermal management cooling system of the vehicle through a cooling pipeline so that there is a flowing cooling medium in the liquid cooling plate. The cooling water path outlet 3111 can be connected to the second cooling unit 320 so that the cooling medium flows from the first cooling member 311 to the second cooling unit 320, thereby dissipating heat to the control component 200, the motor 20 and the reducer 30 in turn.

[0081] In this way, by providing a liquid cooling plate, the control assembly 200 located in the first housing 110 and the second housing 120 can share the first cooling member 311, without providing a split cooling member, so as to save the space of the housing assembly 100, thereby making the electric control assembly 10 more compact. It should be noted that the arrangement size of the liquid cooling plate on the first base plate 112 can be determined according to the heat flux density of the heat generating modules of the first control unit 210 and the second control unit 220, and the embodiment of the present application does not limit this.

[0082] In some embodiments, in order to improve the heat dissipation effect of the second control unit 220, a cooling channel is also included inside the second control unit 220. The cooling channel can be arranged in series or in parallel with the first cooling member 311. It should be noted that the layout of the cooling channel in the second shell 120 is related to the accommodation space of the second shell 120 and the heat flux density of the second control unit 220. It is specifically set according to the adaptability of the actual application scenario, and this embodiment does not limit this.

[0083] In some embodiments, the first cooling unit 310 also includes at least one liquid inlet 312 and at least one liquid outlet 313. The liquid inlet 312 is arranged on the side of the first enclosure portion 111 facing the first bottom plate 112, and the liquid outlet 313 is arranged on the side of the second bottom plate 113. The liquid inlet 312 is connected to the cooling water circuit inlet 3112, and the liquid outlet 313 is connected to the cooling water circuit outlet 3111.

[0084] Continue as Figures 5 to 7 As shown, a liquid inlet 312 is provided on the side of the first enclosure portion 111 facing the first base plate 112, and the liquid inlet 312 is connected to the cooling water circuit inlet 3112 through a small-diameter pipeline. The small-diameter pipeline can be fixed to the first base plate 112 by a snap or the like. In this way, the first cooling member 311 can be connected to the input end of the thermal management cooling system of the vehicle through the external liquid inlet 312.

[0085] Furthermore, the liquid outlet 313 is set on the side of the second base plate 113 close to the motor 20, which can shorten the cooling path from the first cooling unit 310 to the second cooling unit 320. The cooling water outlet 3111 and the liquid outlet 313 can be connected through a small-diameter pipeline, and the first cooling member 311 and the second cooling unit 320 are connected through the external liquid outlet 313.

[0086] In this way, by setting up the external liquid inlet 312 and the liquid outlet 313, it is not only convenient for the later inspection or maintenance of each interface, but also avoids the need to reserve a larger interface when the first cooling member 311 is arranged on the first base plate 112, thereby making the layout space of the cooling component 300 in the electronic control assembly 10 in the shell component 100 more compact, thereby improving the integration of the electronic control assembly 10.

[0087] In some embodiments, the second cooling unit 320 includes a second cooling member 321 and a connecting member 322 . The second cooling member 321 is used to be disposed at the bottom end of the housing of the motor 20 , and the second cooling member 321 is connected to the liquid outlet 313 via the connecting member 322 .

[0088] like Figure 2 , Figure 3 and Figure 7 As shown, the motor 20 is connected to the housing of the reducer 30, and the motor 20 and the reducer 30 are co-lubricated with oil through an oil circuit. The motor 20 is cooled by the self-stirring oil splash of the reducer 30. In some embodiments, the oil absorbs heat during the operation of the vehicle and its temperature rises, causing the viscosity of the oil to decrease, and both the lubrication capacity and the cooling capacity are reduced.

[0089] In an embodiment of the present application, a second cooling member 321 is arranged at the bottom end of the shell of the motor 20. Exemplarily, the second cooling member 321 can be an oil cooler, and the connecting member 322 is a liquid cooling pipeline. Specifically, a cooling pipe and an oil pipe are arranged in parallel in the oil cooler, and the cooling pipe in the oil cooler is connected to the liquid outlet 313 of the first cooling unit 310 through the liquid cooling pipeline for circulation of the cooling medium, and then the oil pipe in the oil cooler is connected to the oil circuit of the motor 20 and the reducer 30 for oil circulation; it should be noted that a special joint for a liquid cooling pipe is used at the connection of each liquid cooling pipeline to ensure that the cooling medium does not leak.

[0090] In actual use, when the oil in the oil circuit of the motor 20 and the reducer 30 is heated up and flows into the oil pipe of the oil cooler, the cooling medium in the cooling pipe of the oil cooler exchanges heat with the oil in the oil pipe to reduce the temperature of the oil to a certain extent, and the cooled oil returns to the oil circuit of the motor 20 and the reducer 30 to lubricate and cool the motor 20 and the reducer 30 again. At this point, the cooling medium completes a cooling cycle through the first cooling unit 310 to the second cooling unit 320 of the electronic control assembly 10, and finally the heated cooling medium flows into the output end of the thermal management cooling system, that is, the heat exchange device, for cooling.

[0091] In this way, the cooling medium of the first cooling member 311 can be extended to the second cooling member 321 at the bottom end of the motor 20 housing through the connecting member 322, so that the electronic control assembly 10, the motor 20 and the reducer 30 have a cooling channel connected in series, so that the layout of the cooling component 300 is simple and occupies a smaller space, thereby improving the integration of the electronic control assembly 10 and the electric drive system.

[0092] In some embodiments, the first control unit 210 includes a motor controller disposed within the first housing 110 .

[0093] In the present application, the first control unit 210 includes a motor controller (MCU). Specifically, the MCU obtains vehicle requirements (gear, acceleration, braking and other instructions) from the vehicle controller, obtains electrical energy from the power battery, and modulates its own inverter to obtain the electrical energy required to drive the motor 20, thereby adjusting the operating state of the motor 20 so that the speed and torque of the motor 20 meet the different operating requirements of the vehicle.

[0094] It should be noted that the first control unit 210 also includes a vehicle control unit (VCU), a high-voltage power distribution unit (PDU) and a battery management system (BMS), wherein the VCU is used to collect component signals such as the motor 20 automatic control system signal, the accelerator pedal signal and the brake pedal signal, and plays a leading role in the vehicle's normal driving, the braking system feedback of the charging battery heat, and the fault detection and resolution; the PDU is used for power distribution and management in the high-voltage system, and provides the whole vehicle with functions such as charging and discharging control, high-voltage component power-on control, circuit overload and short-circuit protection, high-voltage sampling, and low-voltage control; the BMS is an important link between the vehicle-mounted battery and the vehicle, and is used for real-time monitoring of battery physical parameters, battery status evaluation, and charge and discharge and pre-charge control balance management.

[0095] In the present application, by highly integrating the MCU, VCU, PDU and BMS on an integrated circuit board structure, the space occupied by the first control unit 210 in the first shell 110 can be greatly reduced, so that the first shell 110 is small and compact, thereby improving the integration of the electronic control assembly 10.

[0096] In some embodiments, the second control unit 220 includes an on-board charger and a DC-to-DC converter, and both the on-board charger and the DC-to-DC converter are disposed on a side of the first bottom plate 112 facing the plug-in portion 122 .

[0097] In this application, if Figure 4 , Figure 5 and Figure 8 As shown, the second control unit 220 integrates the on-board charger (OBC) and the DC-DC converter (DC-DC) and is arranged on the side of the first bottom plate 112 facing the plug-in portion 122. Correspondingly, the first bottom plate 112 is provided with an assembly hole for installing the second control unit 220, so that the second control unit 220 is fixed in the second housing 120 by fasteners. Among them, OBC converts the AC power input from the power grid into DC power to manage the charging of the vehicle's power battery, and DC-DC converts the DC high voltage in the vehicle battery into DC low voltage to power the on-board power supply and the functional modules on its electrical circuit.

[0098] In some embodiments, the first shell 110 also includes a top plate 114, which is covered on the first enclosure portion 111, and the first enclosure portion 111 has a mounting seat 1111, and the mounting seat 1111 is arranged one-to-one corresponding to the mounting holes on the motor 20 and the reducer 30, so that the mounting seat 1111 is connected to the mounting hole through fasteners.

[0099] like Figure 3 and Figure 5 As shown, the first housing 110 also includes a top plate 114. Specifically, the top plate 114 is a structure that matches the first enclosure 111. The top plate 114 is set on the first enclosure 111 to seal the inside of the first housing 110, thereby improving the protection of the first control unit 210 in the first housing 110. In addition, the surrounding side of the first enclosure 111 is provided with a mounting seat 1111 that corresponds to the mounting holes on the housings of the motor 20 and the reducer 30. The mounting seat 1111 is fastened and connected to the mounting hole by a fastener. The fastener can be a bolt, a stud, etc., which is not limited in the embodiment of the present application. As a result, the first housing 110 is firmly connected to the motor 20 and the reducer 30.

[0100] On the basis of the above embodiments, this embodiment provides a vehicle, including an electric drive system and any one of the above electric control assemblies 10 connected to the electric drive system.

[0101] The structure of the electronic control assembly 10 has been described in detail in the above embodiments, and will not be described in detail here.

[0102] The vehicle provided by the present application is provided with an electric control assembly 10 having a stepped structure, so that when the motor 20 and the reducer 30 of the electric drive system are arranged below the electric control assembly 10, the stacking height can be reduced, and the electric control assembly 10 and the electric drive system are provided with a cooling channel in series to reduce the space occupied by the cooling component 300 in the electric control assembly 10 and the electric drive system, so that the overall structure of the vehicle is compact and has a high degree of integration. In actual use, the electric control assembly 10 is electrically connected to the electric drive system, and the reducer 30 is used to reduce the output speed of the motor 20 through the active operation of the integrated circuits between the control units to increase the output torque, thereby causing the motor 20 to generate a driving force that satisfies the vehicle's driving.

[0103] So far, the technical solution of the present application has been described in conjunction with the preferred embodiments shown in the accompanying drawings. However, it is easy for those skilled in the art to understand that the protection scope of the present application is obviously not limited to these specific embodiments, and the above embodiments are only used to illustrate the technical solution of the present application rather than to limit it. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein by equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present application.

[0104] Those skilled in the art will readily appreciate other embodiments of the present application after considering the description and practicing the contents disclosed herein. The present application is not limited to the precise structures described above and shown in the accompanying drawings, and various modifications and changes can be made without departing from its scope. The present application is intended to cover any modification, use or adaptation of the present application, which follows the general principles of the present application and includes common knowledge or customary technical means in the art that are not disclosed in the present application. The description and embodiments are only considered as exemplary, and the scope of the present application is limited only by the appended claims.

Claims

1. An electronic control assembly for an electric drive system, It is characterized in that It includes a housing component, a control component and a cooling component; The housing assembly includes a first housing and a second housing, the first housing is used to be connected to the motor and the reducer of the electric drive system, and the second housing is connected below a portion of the first housing; The control assembly includes a first control unit and a second control unit, the first control unit is arranged in the first housing, and the second control unit is arranged in the second housing; The cooling assembly includes a first cooling unit and a second cooling unit, the first cooling unit is arranged between the first shell and the second shell; the second cooling unit is arranged on the motor, and the first cooling unit is connected to the second cooling unit to cool the control assembly, the motor and the reducer.

2. The electronic control assembly according to claim 1, It is characterized in that The first shell includes a first enclosure portion, a first bottom plate and a second bottom plate, the first bottom plate and the second bottom plate are connected, the first enclosure portion is surrounded by the first bottom plate and the second bottom plate, and the second shell is located below the first bottom plate.

3. The electronic control assembly according to claim 2, It is characterized in that The second shell includes a second enclosure portion and an inserting portion. The second enclosure portion is disposed below the first bottom plate away from the first enclosure portion, and the inserting portion is inserted into the second enclosure portion.

4. The electronic control assembly according to claim 2, It is characterized in that The first cooling unit includes a first cooling member, which is disposed on the first bottom plate and has a cooling water path inlet and a cooling water path outlet that are connected.

5. The electronic control assembly according to claim 4, It is characterized in that The first cooling unit also includes at least one liquid inlet and at least one liquid outlet, the liquid inlet is arranged on the side of the first enclosure portion facing the first bottom plate, the liquid outlet is arranged on one side of the second bottom plate, the liquid inlet is connected to the cooling water circuit inlet, and the liquid outlet is connected to the cooling water circuit outlet.

6. The electronic control assembly according to claim 5, It is characterized in that The second cooling unit includes a second cooling member and a connecting member. The second cooling member is used to be arranged at the bottom end of the housing of the motor, and the second cooling member is connected to the liquid outlet through the connecting member.

7. The electronic control assembly according to any one of claims 1 to 6, It is characterized in that The first control unit includes a motor controller disposed in the first housing.

8. The electronic control assembly according to claim 3, It is characterized in that The second control unit includes an on-board charger and a DC-to-DC converter, and both the on-board charger and the DC-to-DC converter are arranged on a side of the first bottom plate facing the plug-in portion.

9. The electronic control assembly according to any one of claims 2 to 6, It is characterized in that The first shell also includes a top plate, which is covered on the first enclosure portion, and the first enclosure portion has a mounting seat, which is arranged in a one-to-one correspondence with the mounting holes on the motor and the reducer, so that the mounting seat is connected to the mounting hole by fasteners.

10. A vehicle, It is characterized in that The invention comprises an electric drive system and an electric control assembly according to any one of claims 1 to 9 connected to the electric drive system.

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