Electric drive power system and vehicle

Abstract

The utility model discloses an electric driving force system and a vehicle, and the electric driving force system comprises a power device, in which an oil storage cavity is formed; the controller is connected with the power device, and a heat exchange medium flow channel is formed in the controller; the oil cooling device is fixedly arranged on the controller, a heat exchange flow channel and an oil liquid flow channel are formed in the oil cooling device, the heat exchange flow channel is matched with the oil liquid flow channel in a heat exchange mode, the oil liquid flow channel is communicated with the oil storage cavity to form an oil liquid circulation flow channel, and the heat exchange flow channel is communicated with the heat exchange medium flow channel to enable a heat exchange medium to flow into the heat exchange flow channel. Therefore, the heat exchange medium flow channel is formed through the controller, the oil cooling device is fixedly arranged on the controller, the design structure of the motor shell is simplified, casting forming of the motor shell is facilitated, the qualification rate of the motor shell is increased, the machining cost of the motor shell is reduced, the leakage risk of the heat exchange medium is reduced, and meanwhile the service life of the motor shell is prolonged. The motor shell can be cast by magnesium alloy materials, so that the weight of the power device can be reduced.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of electric drive power systems, and in particular to an electric drive power system and a vehicle having the same. BACKGROUND

[0002] In the related art, the existing electric drive power system includes a power device and an oil cooling device. The power device includes a drive motor, and the oil cooling device is fixedly arranged on a motor shell of the drive motor. The motor shell needs to be provided with a heat exchange medium flow channel. The heat exchange medium flow channel is in communication with the oil cooling device. However, the heat exchange medium flow channel has a complex structure, which leads to poor casting process performance of the motor shell. The heat exchange medium flow channel is prone to leakage, which causes water to flow into the drive motor. The motor shell has a low qualification rate. In addition, the motor shell is provided with the heat exchange medium flow channel, which is not conducive to the selection of magnesium alloy material for casting processing of the motor shell, leading to a large weight of the motor shell. CONTENT OF THE INVENTION

[0003] The present application aims to at least solve one of the technical problems existing in the prior art. To this end, one object of the present application is to provide an electric drive power system. The controller of the electric drive power system is formed with a heat exchange medium flow channel. The oil cooling device is fixedly arranged on the controller, which is convenient for casting of the motor shell, is conducive to improving the qualification rate of the motor shell, is conducive to reducing the processing cost of the motor shell, reduces the risk of leakage of the heat exchange medium, and at the same time, the motor shell can be made of magnesium alloy material for casting processing, which is conducive to reducing the weight of the power device.

[0004] The present application further provides a vehicle.

[0005] In a first aspect, the embodiments of the present application provide an electric drive power system, comprising:

[0006] a power device, the power device being formed with an oil storage cavity;

[0007] a controller, the controller being connected with the power device to control the power device to work, the controller being formed with a heat exchange medium flow channel;

[0008] an oil cooling device, the oil cooling device being fixedly arranged on the controller, the oil cooling device being formed with a heat exchange flow channel and an oil flow channel, the heat exchange flow channel and the oil flow channel being in heat exchange cooperation, the oil flow channel being in communication with the oil storage cavity to form an oil circulation flow channel, and the heat exchange flow channel being in communication with the heat exchange medium flow channel to make the heat exchange medium flow into the heat exchange flow channel.

[0009] In the technical scheme, the heat exchange medium flow channel is formed in the controller, the oil cooling device is fixed to the controller, and the heat exchange medium flow channel does not need to be arranged on the motor shell of the power device, which is beneficial to simplify the design structure of the motor shell, facilitate the casting forming of the motor shell, thereby being beneficial to improve the qualified rate of the motor shell, reduce the processing cost of the motor shell, and reduce the leakage risk of the heat exchange medium, and meanwhile, the motor shell can be made of magnesium alloy material, thereby being beneficial to reduce the weight of the power device.

[0010] In some embodiments, the heat exchange flow channel and the heat exchange medium flow channel are in communication, and the heat exchange medium in the heat exchange flow channel flows into the heat exchange medium flow channel.

[0011] In the technical scheme, the heat exchange flow channel and the heat exchange medium flow channel are in communication, and the heat exchange medium in the heat exchange flow channel flows into the heat exchange medium flow channel, which can make the heat exchange medium flow into the heat exchange flow channel through the heat exchange medium flow channel, and also can make the heat exchange medium in the heat exchange flow channel flow out through the heat exchange medium flow channel, thereby realizing the effect of the heat exchange medium flowing into or out of the controller.

[0012] In some embodiments, the controller has a controller shell, and the controller shell is formed with the heat exchange medium flow channel.

[0013] In the technical scheme, the heat exchange medium flow channel is formed in the controller shell, the controller shell has good structural strength, and the risk of the heat exchange medium in the heat exchange medium flow channel flowing into the inside of the controller is reduced, thereby being beneficial to improve the working reliability of the controller, and further making the arrangement position of the heat exchange medium flow channel reasonable.

[0014] In some embodiments, the heat exchange medium flow channel comprises a medium inflow flow channel and a medium outflow flow channel, and the heat exchange flow channel is in communication with the medium inflow flow channel and the medium outflow flow channel.

[0015] In the technical scheme, the heat exchange flow channel is in communication with the medium inflow flow channel and the medium outflow flow channel, the heat exchange medium flowing into the medium inflow flow channel sequentially flows through the medium inflow flow channel, the heat exchange flow channel and the medium outflow flow channel, which can make all the heat exchange medium flowing into the medium inflow flow channel flow through the heat exchange flow channel, can make all the heat exchange medium flowing into the medium inflow flow channel participate in heat exchange, thereby being beneficial to improve the utilization rate of the heat exchange medium, and further making the structural arrangement of the heat exchange flow channel and the heat exchange medium flow channel reasonable.

[0016] In some embodiments, the controller shell has a mounting wall, the oil cooling device is fixed to the mounting wall, and the mounting wall is formed with the heat exchange medium flow channel.

[0017] In the technical solution, the oil cooling device is fixed to the mounting wall, and the mounting wall is formed with the heat exchange medium flow channel. Compared with the case where the oil cooling device is fixed to other shell walls of the controller shell, the distance between the oil cooling device and the heat exchange medium flow channel can be reduced, which is conducive to reducing the length of the heat exchange medium flow channel, thereby reducing the opening size of the controller shell, and further facilitating the controller shell to meet the structural strength and rigidity requirements.

[0018] In some embodiments, the inlet end of the medium outflow channel and / or the outlet end of the medium inflow channel is formed on the surface of the mounting wall facing the oil cooling device.

[0019] In the technical solution, since the heat exchange channel inlet and the heat exchange channel outlet of the heat exchange channel are formed on the same side wall of the oil cooling device, the inlet end of the medium outflow channel and the outlet end of the medium inflow channel are both formed on the surface of the mounting wall facing the oil cooling device, which facilitates the connection between the heat exchange channel inlet and the medium inflow channel outlet, and facilitates the connection between the heat exchange channel outlet and the medium outflow channel inlet, thereby improving the assembly efficiency of the oil cooling device and the controller shell, and reasonably arranging the positions of the inlet end of the medium outflow channel and the outlet end of the medium inflow channel.

[0020] In some embodiments, the outlet end of the medium outflow channel is formed on the surface of the mounting wall facing the oil cooling device, and the outlet end of the medium outflow channel is staggered with the oil cooling device.

[0021] In the technical solution, the outlet end of the medium outflow channel is formed on the surface of the mounting wall facing the oil cooling device, which facilitates the connection between the outlet end of the medium outflow channel and the connecting pipeline, so that the heat exchange medium flows out of the controller through the connecting structure. By staggering the outlet end of the medium outflow channel with the oil cooling device, the effect of the oil cooling device blocking the outlet end of the medium outflow channel is reduced, and the risk of interference between the oil cooling device and the connecting pipeline is reduced, thereby facilitating the connection assembly between the outlet end of the medium outflow channel and the connecting pipeline.

[0022] In some embodiments, the medium inflow channel includes a plurality of sub-inflow channel segments connected in sequence, and an included angle is formed between any two adjacent sub-inflow channel segments.

[0023] In the technical solution, the included angle is formed between any two adjacent sub-inflow channel segments, which is conducive to reducing the flow speed of the heat exchange medium in the inflow heat exchange channel, increasing the heat exchange time of the heat exchange medium and the oil in the heat exchange channel, and thereby facilitating sufficient heat exchange between the heat exchange medium and the oil.

[0024] In some embodiments, the medium outflow channel includes a plurality of sub-outflow channel segments connected in sequence, and an included angle is formed between any two adjacent sub-outflow channel segments.

[0025] In the technical scheme, the included angle formed between any two adjacent sub-outflow channel segments is beneficial to reducing the flow speed of the heat exchange medium flowing into the heat exchange channel, and can further increase the heat exchange time of the heat exchange medium and the oil, thereby being beneficial to fully heat exchanging the heat exchange medium and the oil.

[0026] In some embodiments, the controller is formed with a first communication channel and a second communication channel, the oil flow channel has an oil inlet and an oil outlet, the first communication channel communicates the oil storage cavity and the oil inlet, and the second communication channel communicates the oil storage cavity and the oil outlet.

[0027] In the technical scheme, the first communication channel communicates the oil storage cavity and the oil inlet, and the second communication channel communicates the oil storage cavity and the oil outlet, so that the oil in the oil storage cavity can flow into the oil flow channel through the first communication channel, and the oil in the oil flow channel can flow back to the oil storage cavity, realizing the circulating flow of the oil and the continuous heat exchange effect with the heat exchange medium.

[0028] In some embodiments, the controller has a controller housing, the controller housing has a mounting wall, the oil cooling device is fixed to the mounting wall, and the outlet end of the first communication channel and / or the inlet end of the second communication channel are formed on the surface of the mounting wall facing the oil cooling device.

[0029] In the technical scheme, since the oil inlet, the oil outlet, the heat exchange channel inlet and the heat exchange channel outlet are all formed on the same side wall of the oil cooling device, the outlet end of the first communication channel and the inlet end of the second communication channel are formed on the surface of the mounting wall facing the oil cooling device, which is beneficial to the assembly efficiency of the oil cooling device and the controller housing, and the outlet end of the first communication channel and the inlet end of the second communication channel are arranged in a reasonable position.

[0030] In some embodiments, the controller is fixed to the power device.

[0031] In the technical scheme, the controller is fixed to the power device, which can reduce the risk of relative movement of the controller and the power device, and is beneficial to reliably controlling the power device to work by the controller, and is also beneficial to the communication of the first communication channel and the second communication channel with the oil storage cavity.

[0032] In a second aspect, the embodiments of the present application also provide a vehicle comprising the above-mentioned electric drive power system.

[0033] Additional aspects and advantages of the application will be set forth in part in the description which follows, and in part will become apparent to those skilled in the art upon examination of the following description and drawings. BRIEF DESCRIPTION OF DRAWINGS

[0034] The above and / or additional aspects and advantages of the present application will become apparent and more readily appreciated from the following description, taken in conjunction with the following drawings in which:

[0035] Figure 1 is a schematic view of a vehicle according to an embodiment of the present application;

[0036] Figure 2 is a schematic view of an electric drive power system according to an embodiment of the present application;

[0037] Figure 3 is a schematic view of an electric drive power system according to an embodiment of the present application;

[0038] Figure 4 is a schematic view of an electric drive power system according to an embodiment of the present application;

[0039] Figure 5 is a schematic view of a power device of an electric drive power system according to an embodiment of the present application;

[0040] Figure 6 is a sectional view of an electric drive power system according to an embodiment of the present application.

[0041] Reference Signs:

[0042] Electric drive power system 100;

[0043] Power device 10; oil storage cavity 11; drive motor 12; motor housing 121;

[0044] Controller 20;

[0045] Heat exchange medium flow channel 21;

[0046] Medium inflow flow channel 211; sub-inflow flow channel section 2111; medium inflow flow channel outlet 2112;

[0047] Medium outflow flow channel 212; sub-outflow flow channel section 2121; medium outflow flow channel inlet 2122; medium outflow flow channel outlet 2123;

[0048] Controller housing 22; mounting wall 221; first threaded hole 222;

[0049] Oil cooling device 30;

[0050] First communication flow channel outlet 40; second communication flow channel inlet 50;

[0051] Vehicle 200; battery device 201; motor 202. DETAILED DESCRIPTION

[0052] In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only some but not all of the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by a person of ordinary skill in the art without creative work fall within the protection scope of the present application.

[0053] Unless otherwise defined, all technical and scientific terms used in the present application have the same meaning as commonly understood by one of ordinary skill in the art to which the present application belongs; the terms used in the present application are only for the purpose of describing specific embodiments and are not intended to limit the present application; the terms "include" and "have" and any variations thereof in the specification and claims of the present application and the above description of drawings are intended to cover non-exclusive inclusion. The terms "first", "second" and the like in the specification and claims of the present application and the above description of drawings are used to distinguish different objects, not to describe a particular order or primary and secondary relationship.

[0054] In the present application, the phrase "embodiments" means that the specific features, structures or characteristics described in connection with the embodiments can be included in at least one embodiment of the present application. The phrase appears at various places in the specification does not necessarily all refer to the same embodiments, nor are they necessarily mutually exclusive or alternative embodiments to each other.

[0055] In the description of the present application, it should be noted that unless otherwise explicitly specified and limited, the terms "mount", "connect", "connection", "attach" should be understood broadly, for example, it can be fixed connection, or detachable connection, or integral connection; it can be direct connection, or indirect connection through intermediate medium; it can be internal communication of two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0056] In the present application, the term "and / or" is only a description of the association relationship between the associated objects, which means that there can be three kinds of relationships, for example, A and / or B can mean that A exists alone, A and B exist together, and B exists alone. In addition, the character " / " in the present application generally represents a "or" relationship between the front and rear associated objects.

[0057] In the embodiments of the present application, the same reference signs represent the same parts, and for the sake of brevity, the detailed description of the same parts is omitted in different embodiments. It should be understood that the thickness, length and width of various components in the embodiments of the present application shown in the drawings, and the overall thickness, length and width of the integrated device are only exemplary and should not constitute any limitation on the present application.

[0058] The "multiple" appearing in the present application refers to two or more (including two).

[0059] In the embodiments of the present application, the electric drive force system is installed on the vehicle, and the electric drive force system provides power for the vehicle to drive the vehicle to travel.

[0060] In the embodiments of the present application, the electric drive force system includes a power device and a controller, the power device includes a drive motor, the controller is connected with the drive motor, and the controller is used to control the drive motor to work to drive the motor to provide power for the vehicle.

[0061] In the embodiments of the present application, the electric drive force system includes a power device and a controller, the power device includes a drive motor and a transmission, the controller is connected with the drive motor, the output shaft of the drive motor is drivingly connected with the transmission, and the controller is used to control the drive motor to work to drive the transmission to work.

[0062] In recent years, new energy vehicles have made a great leap in development. In the field of electric vehicles, the electric drive force system is a core component of the vehicle and plays an irreplaceable important role. The existing electric drive force system includes a power device and an oil cooling device, the power device includes a drive motor, the oil cooling device is fixedly arranged on the motor housing of the drive motor, the motor housing needs to be provided with a heat exchange medium flow channel, the heat exchange medium flow channel is communicated with the oil cooling device, but the heat exchange medium flow channel has a complex structure, which leads to poor casting process of the motor housing, the heat exchange medium flow channel is easy to leak, which leads to water flowing into the drive motor, the qualified rate of the motor housing is low, and the motor housing provided with the heat exchange medium flow channel is not conducive to the selection of magnesium alloy material for casting processing of the motor housing, which leads to large weight of the motor housing.

[0063] Based on the above consideration, in order to solve the problems of complex structure, poor casting process, low qualified rate and large weight of the motor housing, after deep research, an electric drive force system is designed, which includes: a power device, an oil storage cavity is formed in the power device; a controller, the controller is connected with the power device to control the power device to work, and the controller forms a heat exchange medium flow channel; an oil cooling device, the oil cooling device is fixedly arranged on the controller, the oil cooling device forms a heat exchange flow channel and an oil flow channel, the heat exchange flow channel and the oil flow channel are heat exchange matched, the oil flow channel is communicated with the oil storage cavity to form an oil circulation flow channel, and the heat exchange flow channel is communicated with the heat exchange medium flow channel to make the heat exchange medium flow into the heat exchange flow channel.

[0064] In the electric driving force system with the structure, the oil cooling device is fixed to the controller, the motor housing of the power device does not need to be provided with the heat exchange medium flow channel, which is beneficial to simplify the design structure of the motor housing, facilitate the casting of the motor housing, thereby being beneficial to improve the qualified rate of the motor housing, reduce the processing cost of the motor housing, reduce the risk of the heat exchange medium flowing into the driving motor of the power device, and select the magnesium alloy material for the casting of the motor housing, thereby being beneficial to reduce the weight of the power device.

[0065] Please refer to Figure 1 , Figure 1 The structural schematic diagram of the vehicle 200 is provided for some embodiments of the present application. The vehicle 200 can be a new energy vehicle, which can be a pure electric vehicle, a hybrid vehicle or a range extended vehicle. The vehicle 200 can include a battery device 201, a controller 20 and a motor 202. The battery device 201 can be used for power supply of the electric driving force system 100, and can also supply power for the motor 202, for example, for the working power demand of the vehicle 200 during starting, navigation and driving.

[0066] The electric driving force system 100 according to the embodiments of the present application is described below with reference to Figures 2-6 The electric driving force system 100 according to the embodiments of the present application is described below with reference to

[0067] As shown in Figures 2-6 The electric driving force system 100 according to the embodiments of the present application includes a power device 10, a controller 20 and an oil cooling device 30. The power device 10 is formed with an oil storage cavity 11. The controller 20 is connected with the power device 10 to control the working of the power device 10, and is formed with a heat exchange medium flow channel 21. The oil cooling device 30 is fixed to the controller 20, and is formed with a heat exchange flow channel and an oil flow channel. The heat exchange flow channel and the oil flow channel are heat exchange matched. The oil flow channel and the oil storage cavity 11 are communicated to form an oil circulation flow channel. The heat exchange flow channel is communicated with the heat exchange medium flow channel 21 to make the heat exchange medium flow into the heat exchange flow channel.

[0068] The electric drive force system 100 comprises a power device 10, a controller 20 and an oil cooling device 30. The power device 10 is provided with an oil storage cavity 11. The power device 10 comprises a power device housing, and the power device housing defines the oil storage cavity 11. As an example, the power device 10 comprises a drive motor 12, and a motor housing 121 of the drive motor 12 defines the oil storage cavity 11. As another example, the power device 10 comprises the drive motor 12 and a transmission, and the motor housing 121 of the drive motor 12 and a transmission housing of the transmission jointly define the oil storage cavity 11. The controller 20 is a motor controller 20, and the controller 20 is communicatively connected with the drive motor 12 of the power device 10. The controller 20 can be communicatively connected with the drive motor 12 of the power device 10 through a wire harness, or the controller 20 is communicatively connected with the drive motor 12 of the power device 10 in a wireless manner. The controller 20 is configured to control the drive motor 12 of the power device 10 to work. The controller 20 is provided with a heat exchange medium flow channel 21, and a heat exchange medium can flow into the heat exchange medium flow channel 21, and the heat exchange medium in the heat exchange medium flow channel 21 can also flow out of the heat exchange medium flow channel 21.

[0069] The oil cooling device 30 is fixed to the controller 20. The oil cooling device 30 can be fixed to the controller 20 by bolts, or the oil cooling device 30 can be clamped to the controller 20, so that the oil cooling device 30 is fixed to the controller 20. By fixing the oil cooling device 30 to the controller 20, the arrangement position of the oil cooling device 30 can be flexible, and compared with fixing the oil cooling device 30 to the motor housing 121, the height dimension of the drive motor 12 can be reduced.

[0070] The oil cooling device 30 is provided with a heat exchange flow channel and an oil flow channel, and the heat exchange flow channel and the oil flow channel are heat exchange matched. When the heat exchange medium flows in the heat exchange flow channel, the heat exchange medium in the heat exchange flow channel can exchange heat with the oil in the oil flow channel, so as to adjust the temperature of the oil in the oil flow channel.

[0071] The oil flow channel and the oil storage cavity 11 are communicated, and an oil circulation flow channel can be formed. The oil in the oil storage cavity 11 can flow along the oil circulation flow channel. It should be noted that the oil in the oil storage cavity 11 can flow into the oil flow channel, the oil flowing into the oil flow channel flows along the oil flow channel, and the oil flowing out of the oil flow channel flows into the oil storage cavity 11. The oil circulates and exchanges heat with the heat exchange medium in the heat exchange flow channel, so that the temperature of the oil meets the working requirement.

[0072] The heat exchange flow channel is in communication with the heat exchange medium flow channel 21. The heat exchange flow channel can be in direct communication with the heat exchange medium flow channel 21, or the heat exchange flow channel can be in indirect communication with the heat exchange medium flow channel 21. The heat exchange flow channel is in communication with the heat exchange medium flow channel 21. After the heat exchange medium flows into the heat exchange medium flow channel 21, at least part of the heat exchange medium in the heat exchange medium flow channel 21 can flow into the heat exchange flow channel. The heat exchange medium flowing into the heat exchange flow channel can exchange heat with the oil in the oil flow channel along the heat exchange flow channel. After the heat exchange medium in the heat exchange flow channel exchanges heat with the oil, the heat exchange medium can flow out of the heat exchange flow channel along the heat exchange flow channel.

[0073] In the electric drive power device 100 of the present application, the oil cooling device 30 is fixed to the controller 20, so that the oil cooling device 30 can be arranged flexibly. Compared with the oil cooling device 30 being fixed to the motor housing 121, the safety gap between the oil cooling device 30 and the stator part of the drive motor 12 does not need to be considered, which is beneficial to control the height size of the drive motor 12, is beneficial to reduce the height size of the drive motor 12, and is beneficial to increase the setting height of the oil cooling device 30, which can improve the heat dissipation capacity of the oil cooling device 30, thereby improving the heat dissipation effect of the oil. The heat exchange medium flow channel 21 is formed in the controller 20, and the heat exchange medium flow channel 21 does not need to be arranged on the motor housing 121. Compared with the heat exchange medium flow channel 21 being formed in the motor housing 121, it is beneficial to simplify the design structure of the motor housing 121, facilitate the casting molding of the motor housing 121, and is beneficial to improve the qualified rate and quality of the motor housing 121, and reduce the risk of heat exchange medium leakage. At the same time, the motor housing 121 can be made of magnesium alloy material, which is beneficial to reduce the weight of the motor housing 121, thereby reducing the weight of the power device 10.

[0074] In the above technical solution, the heat exchange medium flow channel 21 is formed in the controller 20, and the oil cooling device 30 is fixed to the controller 20. The heat exchange medium flow channel 21 does not need to be arranged on the motor housing 121 of the power device 10, which is beneficial to simplify the design structure of the motor housing 121, facilitate the casting molding of the motor housing 121, thereby improving the qualified rate of the motor housing 121, reducing the processing cost of the motor housing 121, and reducing the risk of heat exchange medium leakage. At the same time, the motor housing 121 can be made of magnesium alloy material, which is beneficial to reduce the weight of the power device 10.

[0075] According to some embodiments of the present application, the heat exchange flow channel is in communication with the heat exchange medium flow channel 21, so that the heat exchange medium in the heat exchange flow channel flows into the heat exchange medium flow channel 21.

[0076] The heat exchange flow channel is communicated with the heat exchange medium flow channel 21, at least part of the heat exchange medium in the heat exchange medium flow channel 21 can flow into the heat exchange flow channel after the heat exchange medium flows into the heat exchange medium flow channel 21, the heat exchange medium flowing into the heat exchange flow channel can exchange heat with the oil liquid in the oil liquid flow channel along the heat exchange flow channel, the heat exchange medium in the heat exchange flow channel can flow out along the heat exchange flow channel after exchanging heat with the oil liquid, and the heat exchange medium after heat exchange flows into the heat exchange medium flow channel 21 and flows out of the controller 20.

[0077] As an example, the heat exchange medium flow channel 21 is configured as a flow channel, the heat exchange flow channel inlet and the heat exchange flow channel outlet of the heat exchange flow channel are both communicated with the heat exchange medium flow channel 21, so that part of the heat exchange medium flowing into the heat exchange medium flow channel 21 flows into the heat exchange flow channel, and the heat exchange medium flowing out of the heat exchange flow channel flows into the heat exchange medium flow channel 21.

[0078] As another example, the heat exchange medium flow channel 21 includes a medium flow-in flow channel 211 and a medium flow-out flow channel 212, the heat exchange flow channel inlet of the heat exchange flow channel is communicated with the medium flow-in flow channel 211, and the heat exchange flow channel outlet of the heat exchange flow channel is communicated with the medium flow-out flow channel 212, so that all the heat exchange medium flowing into the heat exchange medium flow channel 21 flows into the heat exchange flow channel, and the heat exchange medium flowing out of the heat exchange flow channel flows into the heat exchange medium flow channel 21.

[0079] In the above technical solution, the heat exchange flow channel is communicated with the heat exchange medium flow channel 21, and the heat exchange medium in the heat exchange flow channel also flows into the heat exchange medium flow channel 21, so that the heat exchange medium can flow into the heat exchange flow channel through the heat exchange medium flow channel 21, and the heat exchange medium in the heat exchange flow channel can also flow out through the heat exchange medium flow channel 21, thereby realizing the effect of the heat exchange medium flowing into or flowing out of the controller 20.

[0080] According to some embodiments of the present application, as shown in Figure 5 and Figure 6 The controller 20 has a controller shell 22, and the controller shell 22 is formed with the heat exchange medium flow channel 21.

[0081] The controller shell 22 is the shell of the controller 20, and the controller shell 22 is used to protect the internal components of the controller 20. The controller shell 22 can be a metal piece, or the controller shell 22 can be a plastic piece.

[0082] In the above technical solution, the heat exchange medium flow channel 21 is formed in the controller shell 22, the structure strength of the controller shell 22 is good, the risk of the heat exchange medium in the heat exchange medium flow channel 21 leaking into the inside of the controller 20 is reduced, thereby being beneficial to improving the working reliability of the controller 20, and further making the arrangement position of the heat exchange medium flow channel 21 reasonable.

[0083] According to some embodiments of the present application, as shown in Figure 6As shown, the heat exchange medium flow channel 21 comprises a medium inflow channel 211 and a medium outflow channel 212, and the heat exchange flow channel communicates the medium inflow channel 211 and the medium outflow channel 212.

[0084] The heat exchange medium flow channel 21 comprises the medium inflow channel 211 and the medium outflow channel 212, and the number of the medium inflow channels 211 and the number of the medium outflow channels 212 are both at least one. The number of the medium inflow channels 211 and the number of the medium outflow channels 212 are both one in the present application. The heat exchange flow channel inlet of the heat exchange flow channel communicates with the medium inflow channel 211, and the heat exchange flow channel outlet of the heat exchange flow channel communicates with the medium outflow channel 212.

[0085] In the above technical solution, the heat exchange medium flowing into the medium inflow channel 211 flows through the medium inflow channel 211, the heat exchange flow channel, and the medium outflow channel 212 in sequence, which can make all the heat exchange medium flowing into the medium inflow channel 211 flow through the heat exchange flow channel and participate in heat exchange, thereby improving the utilization rate of the heat exchange medium and making the structure of the heat exchange flow channel and the heat exchange medium flow channel 21 reasonable.

[0086] According to some embodiments of the present application, as shown in Figure 2 and Figure 3 The controller housing 22 has a mounting wall 221, and the oil cooling device 30 is fixed to the mounting wall 221. The mounting wall 221 forms the heat exchange medium flow channel 21.

[0087] The controller housing 22 has a mounting wall 221, and the oil cooling device 30 is fixed to the mounting wall 221. The mounting wall 221 forms the heat exchange medium flow channel 21.

[0088] In the above technical solution, the oil cooling device 30 is fixed to the mounting wall 221, and the mounting wall 221 is formed with the heat exchange medium flow channel 21. Compared with the case where the oil cooling device 30 is fixed to other shell walls of the controller shell 22, the distance between the oil cooling device 30 and the heat exchange medium flow channel 21 can be reduced, which is beneficial to reducing the length dimension of the heat exchange medium flow channel 21, thereby being beneficial to reducing the opening dimension of the controller shell 22, and further being beneficial to making the controller shell 22 meet the structural strength and rigidity requirements.

[0089] According to some embodiments of the present application, as shown in Figure 5 and Figure 6 The inlet end of the medium outflow channel 212 and / or the outlet end of the medium inflow channel 211 are formed on the surface of the mounting wall 221 facing the oil cooling device 30.

[0090] The inlet end of the medium outflow channel 212 is the medium outflow channel inlet 2122, and the outlet end of the medium inflow channel 211 is the medium inflow channel outlet 2112.

[0091] As an embodiment, one end of the medium outflow channel 212 extends to the surface of the mounting wall 221 facing the oil cooling device 30, so that the inlet end of the medium outflow channel 212 is formed on the surface of the mounting wall 221 facing the oil cooling device 30.

[0092] As another embodiment, one end of the medium inflow channel 211 extends to the surface of the mounting wall 221 facing the oil cooling device 30, so that the outlet end of the medium inflow channel 211 is formed on the surface of the mounting wall 221 facing the oil cooling device 30.

[0093] As another embodiment, one end of the medium outflow channel 212 extends to the surface of the mounting wall 221 facing the oil cooling device 30, so that the inlet end of the medium outflow channel 212 is formed on the surface of the mounting wall 221 facing the oil cooling device 30, and one end of the medium inflow channel 211 extends to the surface of the mounting wall 221 facing the oil cooling device 30, so that the outlet end of the medium inflow channel 211 is formed on the surface of the mounting wall 221 facing the oil cooling device 30. The present application takes the case where the inlet end of the medium outflow channel 212 and the outlet end of the medium inflow channel 211 are both formed on the surface of the mounting wall 221 facing the oil cooling device 30 as an example for description.

[0094] In the technical scheme, the heat exchange channel inlet and the heat exchange channel outlet are formed on the same side wall of the oil cooling device 30, the inlet end of the medium outflow channel 212 and the outlet end of the medium inflow channel 211 are formed on the surface of the mounting wall 221 facing the oil cooling device 30, the heat exchange channel inlet and the medium inflow channel outlet 2112 are conveniently connected and communicated, the heat exchange channel outlet and the medium outflow channel inlet 2122 are conveniently connected and communicated, and the assembly efficiency of the oil cooling device 30 and the controller housing 22 is improved, so that the arrangement positions of the inlet end of the medium outflow channel 212 and the outlet end of the medium inflow channel 211 are reasonable.

[0095] According to some embodiments of the present application, as shown in Figure 5 and Figure 6 , the outlet end of the medium outflow channel 212 is formed on the surface of the mounting wall 221 facing the oil cooling device 30, and the outlet end of the medium outflow channel 212 and the oil cooling device 30 are staggered.

[0096] In the technical scheme, the outlet end of the medium outflow channel 212 is the medium outflow channel outlet 2123, the other end of the medium outflow channel 212 extends to the surface of the mounting wall 221 facing the oil cooling device 30, so that the outlet end of the medium outflow channel 212 is formed on the surface of the mounting wall 221 facing the oil cooling device 30, the normal projection of the oil cooling device 30 and the outlet end of the medium outflow channel 212 are staggered in the arrangement direction of the oil cooling device 30 and the mounting wall 221, and the normal projection of the oil cooling device 30 and the outlet end of the medium outflow channel 212 do not coincide.

[0097] In the technical scheme, the outlet end of the medium outflow channel 212 is formed on the surface of the mounting wall 221 facing the oil cooling device 30, the outlet end of the medium outflow channel 212 is conveniently connected with the connecting pipeline to make the heat exchange medium flow out of the controller 20 through the connecting structure, the outlet end of the medium outflow channel 212 and the oil cooling device 30 are staggered to reduce the effect of the oil cooling device 30 blocking the outlet end of the medium outflow channel 212, and the interference risk of the oil cooling device 30 and the connecting pipeline is reduced, so that the outlet end of the medium outflow channel 212 is conveniently connected and assembled with the connecting pipeline.

[0098] According to some embodiments of the present application, as shown in Figure 6 , the medium inflow channel 211 includes a plurality of sub-inflow channel sections 2111 connected in sequence, and an included angle is formed between any two adjacent sub-inflow channel sections 2111.

[0099] The medium inflow channel 211 includes a plurality of sub-inflow channel segments 2111 connected in sequence. The number of sub-inflow channel segments 2111 can be two, three, four, or the like, and the number of sub-inflow channel segments 2111 can be reasonably selected according to actual conditions. The plurality of sub-inflow channel segments 2111 are arranged in sequence along the extension direction of the medium inflow channel 211, and any two adjacent sub-inflow channel segments 2111 are connected. An included angle is formed between any two adjacent sub-inflow channel segments 2111. The included angle between any two adjacent sub-inflow channel segments 2111 can be greater than or equal to 70° and less than or equal to 110°. The application is described by taking the included angle between any two adjacent sub-inflow channel segments 2111 as 90° as an example.

[0100] In the above technical solution, the included angle between any two adjacent sub-inflow channel segments 2111 is beneficial to reduce the flow speed of the heat exchange medium in the inflow heat exchange channel, can increase the heat exchange time of the heat exchange medium and the oil in the heat exchange channel, and is beneficial to fully heat exchange the heat exchange medium and the oil.

[0101] According to some embodiments of the application, as shown in Figure 6 The medium outflow channel 212 includes a plurality of sub-outflow channel segments 2121 connected in sequence. An included angle is formed between any two adjacent sub-outflow channel segments 2121.

[0102] The medium outflow channel 212 includes a plurality of sub-outflow channel segments 2121 connected in sequence. The number of sub-outflow channel segments 2121 can be two, three, four, or the like, and the number of sub-outflow channel segments 2121 can be reasonably selected according to actual conditions. The plurality of sub-outflow channel segments 2121 are arranged in sequence along the extension direction of the medium outflow channel 212, and any two adjacent sub-outflow channel segments 2121 are connected. An included angle is formed between any two adjacent sub-outflow channel segments 2121. The included angle between any two adjacent sub-outflow channel segments 2121 can be greater than or equal to 70° and less than or equal to 110°. The application is described by taking the included angle between any two adjacent sub-outflow channel segments 2121 as 90° as an example.

[0103] In the above technical solution, the included angle between any two adjacent sub-outflow channel segments 2121 is more beneficial to reduce the flow speed of the heat exchange medium in the inflow heat exchange channel, can further increase the heat exchange time of the heat exchange medium and the oil in the heat exchange channel, and is more beneficial to fully heat exchange the heat exchange medium and the oil.

[0104] According to some embodiments of the present application, an angle is formed between any two adjacent sub-inflow channel segments 2111, and an angle is formed between any two adjacent sub-outflow channel segments 2121, which is more conducive to reducing the flow speed of the heat exchange medium in the inflow heat exchange channel, can further increase the heat exchange time of the heat exchange medium and the oil in the heat exchange channel, and is more conducive to fully heat exchanging the heat exchange medium and the oil.

[0105] According to some embodiments of the present application, the controller 20 is formed with a first communication channel and a second communication channel, and the oil flow channel has an oil inlet and an oil outlet. The first communication channel communicates the oil storage cavity 11 and the oil inlet, and the second communication channel communicates the oil storage cavity 11 and the oil outlet.

[0106] The first communication channel of the controller 20 communicates one end of the oil storage cavity 11 and the other end of the oil inlet, so that the oil in the oil storage cavity 11 flows into the oil flow channel through the first communication channel. One end of the second communication channel communicates the oil storage cavity 11, and the other end of the second communication channel communicates the oil outlet, so that the oil in the oil flow channel can flow back to the oil storage cavity 11, realizing the circulating flow of the oil and the continuous heat exchange effect with the heat exchange medium.

[0107] In the above technical solution, the first communication channel communicates the oil storage cavity 11 and the oil inlet, and the second communication channel communicates the oil storage cavity 11 and the oil outlet, so that the oil in the oil storage cavity 11 can flow into the oil flow channel through the first communication channel, and the oil in the oil flow channel can flow back to the oil storage cavity 11, realizing the circulating flow of the oil and the continuous heat exchange effect with the heat exchange medium.

[0108] According to some embodiments of the present application, as shown in Figure 5 The controller 20 has a controller housing 22, the controller housing 22 has a mounting wall 221, the oil cooling device 30 is fixedly arranged on the mounting wall 221, and the outlet end of the first communication channel and / or the inlet end of the second communication channel are formed on the surface of the mounting wall 221 facing the oil cooling device 30.

[0109] The outlet end of the first communication channel is a first communication channel outlet 40, and the inlet end of the second communication channel is a second communication channel inlet 50.

[0110] As an embodiment, one end of the first communication channel extends to the surface of the mounting wall 221 facing the oil cooling device 30, so that the outlet end of the first communication channel is formed on the surface of the mounting wall 221 facing the oil cooling device 30. The other end of the first communication channel is a first communication channel inlet, and the first communication channel inlet communicates with the oil storage cavity 11.

[0111] As another example, one end of the second communication flow channel extends to the surface of the mounting wall 221 facing the oil cooling device 30, so that the inlet end of the second communication flow channel is formed on the surface of the mounting wall 221 facing the oil cooling device 30, and the other end of the second communication flow channel is the second communication flow channel outlet, which is in communication with the oil storage cavity 11.

[0112] As another example, the outlet end of the first communication flow channel and the inlet end of the second communication flow channel are formed on the surface of the mounting wall 221 facing the oil cooling device 30, the first communication flow channel inlet of the first communication flow channel is in communication with the oil storage cavity 11, and the second communication flow channel outlet of the second communication flow channel is in communication with the oil storage cavity 11.

[0113] In the above technical solution, since the oil inlet, the oil outlet, the heat exchange flow channel inlet and the heat exchange flow channel outlet are all formed on the same side wall of the oil cooling device 30, by forming the outlet end of the first communication flow channel and the inlet end of the second communication flow channel on the surface of the mounting wall 221 facing the oil cooling device 30, the first communication flow channel outlet 40 is conveniently connected in communication with the oil inlet, and the second communication flow channel inlet 50 is conveniently connected in communication with the oil outlet, which is conducive to improving the assembly efficiency of the oil cooling device 30 and the controller housing 22, so that the outlet end of the first communication flow channel and the inlet end of the second communication flow channel are arranged in a reasonable position.

[0114] According to some embodiments of the present application, as shown in Figure 2 and Figure 3 The controller 20 is fixedly arranged on the power device 10.

[0115] The controller 20 has a controller housing 22, and the drive motor 12 of the power device 10 has a motor housing 121, and the controller housing 22 and the motor housing 121 are fixedly assembled, so that the controller 20 and the power device 10 are fixedly assembled. As an example, the controller housing 22 is formed with a third threaded hole, the motor housing 121 is formed with a fourth threaded hole, the third threaded hole and the fourth threaded hole are oppositely arranged, a bolt passes through the third threaded hole and is assembled in the fourth threaded hole, so that the controller 20 is fixedly arranged on the power device 10.

[0116] In the above technical solution, by fixing the controller 20 on the power device 10, the risk of relative movement of the controller 20 and the power device 10 can be reduced, which is conducive to making the controller 20 reliably control the power device 10 to work, and also facilitates the communication of the first communication flow channel and the second communication flow channel with the oil storage cavity 11.

[0117] According to some embodiments of the present application, the heat exchange medium can be water, gas or other medium. Taking water as an example, the vehicle 200 has a heat exchanger, the medium inlet flow channel 211 inlet is in communication with the controller 20 internal water channel, the water in the heat exchanger flows into the controller 20 and exchanges heat with the controller 20, the water flowing into the controller 20 can flow into the medium inlet flow channel 211, the medium outlet flow channel outlet 2123 is connected with the water pipe of the heat exchanger (i.e. the docking pipe in the above embodiment), so that the heat exchange medium in the medium outlet flow channel 212 flows into the heat exchanger, thereby forming a heat exchange medium circulating flow effect.

[0118] As shown in Figure 1 , according to the vehicle 200 of the embodiments of the present application, the electric drive power system 100 of the above embodiments is included. This is conducive to reducing the processing cost of the vehicle 200, and is conducive to reducing the weight of the vehicle 200, and is also conducive to improving the working reliability of the vehicle 200.

[0119] According to some embodiments of the present application, referring to Figures 2-6 , the present application provides an electric drive power system 100, which includes a power device 10, a controller 20 and an oil cooling device 30, the power device 10 has a drive motor 12, the controller 20 is fixedly arranged on the motor shell 121 of the drive motor 12, and the oil cooling device 30 is fixedly arranged on the controller shell 22. The oil cooling device 30 is formed with a heat exchange flow channel and an oil flow channel, the heat exchange flow channel and the oil flow channel are heat exchange matched, the controller shell 22 is formed with a first communication flow channel and a second communication flow channel, the first communication flow channel is in communication with the oil storage cavity 11 and the oil inlet of the oil flow channel, and the second communication flow channel is in communication with the oil storage cavity 11 and the oil outlet of the oil flow channel. The heat exchange medium flow channel 21 includes a medium inlet flow channel 211 and a medium outlet flow channel 212, and the heat exchange flow channel is in communication with the medium inlet flow channel 211 and the medium outlet flow channel 212. The inlet end of the medium outlet flow channel 212 and the outlet end of the medium inlet flow channel 211 are formed on the surface of the mounting wall 221 facing the oil cooling device 30. The outlet end of the medium outlet flow channel 212 is formed on the surface of the mounting wall 221 facing the oil cooling device 30, and the outlet end of the medium outlet flow channel 212 and the oil cooling device 30 are staggered.

[0120] It should be noted that the embodiments in the present application and the features in the embodiments can be combined with each other without conflict.

[0121] In the description of the application, reference has been made to descriptive terms such as "one embodiment", "some embodiments", "an embodiment", "example", "specific example" or "some examples" etc. It is emphasized that each of these terms refers to a specific feature, structure, material or characteristic described in connection with a particular embodiment or example. The descriptive terms are not necessarily referring to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics can be combined in any suitable manner in one or more embodiments or examples.

[0122] While embodiments of the application have been shown and described, it is to be understood that the application is not limited to the details of the embodiments described, since the scope of the application is defined with respect to the appended claims.

Claims

1. An electrically driven power system, characterized by The power device has an oil storage cavity formed therein. The controller is connected to the power device to control the operation of the power device, and the controller has a heat exchange medium flow channel. The oil cooling device is fixed to the controller, and the oil cooling device has a heat exchange flow channel and an oil flow channel. The heat exchange flow channel and the heat exchange medium flow channel are in communication, and the heat exchange medium in the heat exchange flow channel flows into the heat exchange medium flow channel.

2. The electric drive powertrain of claim 1, wherein, The controller has a controller housing, and the controller housing has the heat exchange medium flow channel.

3. The electric drive power system according to claim 1 or 2, characterized by, The heat exchange medium flow channel includes a medium inflow channel and a medium outflow channel, and the heat exchange flow channel is in communication with the medium inflow channel and the medium outflow channel.

4. The electric drive powertrain of claim 3, wherein, The controller housing has a mounting wall, and the oil cooling device is fixed to the mounting wall.

5. The electric drive powertrain of claim 4, wherein, The inlet end of the medium outflow channel and / or the outlet end of the medium inflow channel is formed on the surface of the mounting wall facing the oil cooling device.

6. The electric drive powertrain system of claim 5, wherein, The outlet end of the medium outflow channel is formed on the surface of the mounting wall facing the oil cooling device, and the outlet end of the medium outflow channel is staggered with the oil cooling device.

7. The electric drive powertrain system of claim 5, wherein, The medium inflow channel includes a plurality of sub-inflow channel segments connected in sequence, and an included angle is formed between any two adjacent sub-inflow channel segments.

8. The electric drive powertrain system of claim 4, wherein, The medium outflow channel includes a plurality of sub-outflow channel segments connected in sequence, and an included angle is formed between any two adjacent sub-outflow channel segments.

9. The electric drive powertrain system of claim 4, wherein, The controller has a first communication flow channel and a second communication flow channel, the oil flow channel has an oil inlet and an oil outlet, the first communication flow channel is in communication with the oil storage cavity and the oil inlet, and the second communication flow channel is in communication with the oil storage cavity and the oil outlet.

10. The electric drive power system according to claim 1 or 2, characterized by, The controller has a controller housing, and the controller housing has a mounting wall, and the oil cooling device is fixed to the mounting wall.

11. The electric drive powertrain of claim 10, wherein, The controller is fixed to the power device.

12. The electric drive power system of claim 1 or 2, wherein, The electric drive power system includes any one of the electric drive power systems according to claims 1-12.

13. A vehicle characterized by comprising: ​

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