Cooling device, electric drive system assembly and vehicle

Abstract

The invention provides a cooling device, an electric drive system assembly and a vehicle, relates to the technical field of electric drive system cooling, and aims at solving the problem that air suction is prone to occurring in an existing cooling device. The cooling device is used for cooling an electric drive system of a vehicle and comprises a box body and a circulation piece. A containing cavity is formed in the box body, and an opening communicated with the containing cavity is formed in the box body. The circulation piece is connected with the box body and at least partially located in the containing cavity. An inlet is formed in one end of the circulation piece, and the circulation piece is located in the containing cavity. An outlet is formed in the other end of the circulation piece and communicates with the outside of the box body through the opening. Wherein the circulation piece is made of a flexible material. The circulation piece of the cooling device can be bent along with the inclination of the box body, so that the inlet of the circulation piece is in contact with oil in the box body.

Description

Technical Field

[0001] The present application relates to the technical field of electric drive system cooling, and in particular to a cooling device, an electric drive system assembly and a vehicle. Background Art

[0002] With the improvement of people's living standards and the progress of science and technology, cars have gradually become people's main means of transportation, and the types of cars have gradually become richer. Among them, new energy vehicles are vehicles that use clean energy, have the advantages of energy saving and environmental protection, and have gradually become people's main choice.

[0003] The electric drive system is the main component of new energy vehicles, and the vehicle can be driven by the electric drive system. As the automotive industry has higher and higher requirements for the power performance, quality reliability and riding comfort of the electric drive system, the lubrication of the reducer and the cooling of the motor in the electric drive system have also undergone new changes. The lubrication of the reducer in the electric drive system has gradually changed from splash lubrication to fixed-point lubrication, and the cooling of the motor has gradually changed from liquid cooling of the housing to direct cooling of the stator and rotor by spraying lubricating oil.

[0004] The oil required for the above-mentioned lubrication and cooling needs to be sucked from the oil pool through an oil pump. CN218094157U discloses a gearbox lubricating oil cooling device, including a gearbox housing, a driving gear and a driven gear are arranged in the gearbox housing, the driving gear and the driven gear are meshed and connected to each other, the driving gear is connected to the driving shaft, both ends of the driving shaft are rotatably connected to the gearbox housing through bearings, one end of the driving shaft extends out of the gearbox housing and is connected to the motor driving end, the other end of the driving shaft is fixedly connected to one end of the transmission shaft, the other end of the transmission shaft is connected to the oil pump driving end, the oil inlet of the oil pump is connected to the oil outlet of the oil suction pipe, and the oil inlet of the oil suction pipe is located at the bottom of the inner cavity of the gearbox housing. CN106655632A provides an oil cooling circuit system, a drive motor, a power system and a car. The oil cooling circuit system is applied to a drive motor, comprising: an oil pump, a first oil pipe, a cooling device and a second oil pipe integrated on the end cover of the drive motor; wherein the oil suction nozzle of the oil pump extends into the bottom oil of the drive motor; the first end of the first oil pipe is connected to the output port of the oil pump, and the second end is connected to the oil inlet of the cooling device; the first end of the second oil pipe is connected to the oil outlet of the cooling device, and the second end extends out of the inner wall of the end cover and communicates with the inner cavity of the drive motor.

[0005] It is known that the vehicle may tilt during operation, causing the oil container to tilt, and the oil will flow to the lowest position of the container. However, the oil pipe of the above solution may separate from the oil when the container is tilted, resulting in the problem of empty suction. Summary of the invention

[0006] The purpose of the present application is to provide a cooling device, an electric drive system assembly and a vehicle, so as to solve the problem that air suction is prone to occur in the existing cooling device.

[0007] In order to achieve the above object, the technical solution adopted by the present invention is as follows:

[0008] On the one hand, an embodiment of the present application provides a cooling device for cooling an electric drive system of a vehicle, the cooling device comprising a housing and a circulation member. A receiving chamber is formed inside the housing, and an opening communicating with the receiving chamber is provided. The circulation member is connected to the housing, and is at least partially located in the receiving chamber. The interior of the circulation member is hollow, and an inlet is formed at one end, which is located in the receiving chamber. An outlet is formed at the other end of the circulation member, and the outlet is communicated with the outside of the housing through the opening. The circulation member is made of a flexible material.

[0009] According to the above technical means, the cooling device provided by the embodiment of the present application, the accommodating cavity inside the box body can provide a storage space for the oil, and the opening on the box body can facilitate the input and output of the oil. Since the end of the circulation member with an inlet is located in the box body, the oil inside the box body can enter the inside of the circulation member through the inlet of the circulation member, and can be sent to the outside of the box body from the outlet of the circulation member to cool the drive motor and lubricate the reducer. Since the circulation member is made of a flexible material, the circulation member can bend with gravity. Therefore, when the box body tilts with the posture of the vehicle, the oil will move to the lowest position of the box body under the action of gravity. At the same time, since the circulation member is made of a flexible material, the circulation member will also change consistently with the oil under the action of gravity. In this way, the inlet can always change with the change of the position of the oil, so that the oil is not easy to separate from the inlet of the circulation member, avoiding the problem of empty suction. At the same time, as mentioned above, since the circulation member can bend under the action of gravity, there is no need to set more oil in the box body to ensure that the inlet of the circulation member is in the oil, saving oil resources and reducing costs.

[0010] In a possible implementation manner, the cooling device further comprises a weight component, which is connected to the circulation component and is close to one end of the circulation component where the inlet is located.

[0011] According to the above technical means, since the counterweight has a certain weight, when the box body is tilted, the counterweight can make the end where the inlet of the circulation part is located always at the bottom of the box body under the action of gravity, and the oil will also move to the bottom of the box body when the box body is tilted, ensuring that the inlet of the circulation part can be in the oil, and the circulation part can always extract oil to avoid empty suction.

[0012] In a possible implementation, the counterweight is provided with an opening, and the opening passes through the counterweight. One end of the circulation member having an inlet is located in the opening and connected to the counterweight.

[0013] According to the above technical means, by setting an opening on the counterweight, the flow member can be set in the opening to achieve connection with the flow member. At the same time, the oil can also enter the inside of the flow member through the opening of the counterweight to achieve oil transmission.

[0014] In a possible implementation, two ends of the opening are arranged opposite to each other, and one end of the flow member having an inlet extends into the interior of the opening through one end of the opening.

[0015] According to the above technical means, when the box body is tilted, the vicinity of the end of the circulation member where the inlet is formed can be arranged roughly along the direction of gravity under the action of the counterweight. Since the two ends of the opening are arranged relatively, the end of the circulation member where the inlet is formed extends into the interior of the opening through one end of the opening, and the extension direction of the opening is also roughly along the direction of gravity, so that the other end of the opening can be better at the lowest position, thereby better ensuring that the oil can enter the interior of the circulation member through the opening.

[0016] In a possible implementation manner, the counterweight is a spherical structure.

[0017] According to the above technical means, since the counterweight is a spherical structure, the outer surface of the counterweight is a relatively smooth curved surface without any sharp corners. In this way, the counterweight is not easy to cause damage to the box body during its movement in the box body, and there will be no jamming, and the movement is relatively smooth.

[0018] In a possible implementation, the cooling device further comprises a fixing member, which is connected to the box body, and one end of the flow member having an outlet is connected to the fixing member, and is connected to the box body through the fixing member.

[0019] According to the above technical means, since the fixing member is provided, the circulation member made of the flexible material can be connected to the fixing member first, and then the fixing member only needs to be connected to the box body, and the connection is relatively convenient.

[0020] In a possible implementation, the fixing member is located in the box body. The fixing member is provided with an avoidance hole. The avoidance hole is arranged opposite to the opening. One end of the flow member having an outlet is located in the avoidance hole and connected to the fixing member.

[0021] According to the above technical means, since the fixing part is provided with an avoidance hole, and the avoidance hole is arranged opposite to the opening, the avoidance hole can be connected with the opening. Since one end of the circulation part with an outlet is located in the avoidance hole, the outlet of the circulation part can be connected with the outside through the avoidance hole, thereby transporting the oil inside the box to the parts that need to be cooled or lubricated. In addition, since the fixing part is located inside the box, it can play a certain protective role on the fixing part and prevent the fixing part from being damaged by collision.

[0022] In a possible implementation, the fixing member is plate-shaped, and one side of the fixing member is in contact with the surface where the opening is located.

[0023] According to the above technical means, when the flow component is used to absorb oil, since the fixing component is in contact with the surface of the side where the opening is located, the suction force provided by the oil pump can be better transmitted to the interior of the flow component, thereby ensuring the smooth absorption of the oil and avoiding the situation where the suction force cannot be effectively transmitted to the interior of the flow component due to the existence of gaps.

[0024] In a possible implementation manner, the cooling device further includes a fastener, which passes through one of the box body and the fixing member and is threadedly connected to the other of the box body and the fixing member.

[0025] According to the above technical means, the fixing part and the box body can be connected to each other by fasteners, and the connection is relatively firm and not easy to fall off.

[0026] In a possible implementation, a circulation channel is formed inside the fixing member. The circulation channel runs through the fixing member. The fixing member is arranged in the opening and connected to the box body. One end of the circulation member having an outlet is located in the circulation channel and connected to the fixing member.

[0027] According to the above technical means, when the fixing part is inserted into the opening and connected to the box body, during the installation process, the fixing part and the circulation part can be directly connected to each other. Then, the end of the circulation part with the inlet is extended into the interior of the box body through the opening, and the fixing part is inserted into the opening and connected to the box body, so that the overall installation can be achieved, and the installation process is relatively simple and convenient. In addition, the oil pump can be connected to the internal channel of the fixing part. In this way, the suction force of the oil pump can also be better transmitted to the interior of the circulation part, achieving a good suction effect.

[0028] On the other hand, an embodiment of the present application provides an electric drive system assembly, comprising a cooling device as described in any one of the above aspects.

[0029] Since the electric drive system assembly provided in the embodiment of the present application includes any one of the above-mentioned cooling devices, it can solve the same technical problems as the above-mentioned cooling devices and achieve the same technical effects, which will not be repeated here.

[0030] On the other hand, an embodiment of the present application provides a vehicle, including the electric drive system assembly in the above aspect.

[0031] Since the vehicle provided in the embodiment of the present application includes the above-mentioned electric drive system assembly, it can solve the same technical problems as the above-mentioned electric drive system assembly and achieve the same technical effects, which will not be repeated here. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 A schematic diagram of the structure of a cooling device in the related art;

[0033] Figure 2 This is one of the structural schematic diagrams of the oil pool in a tilted state;

[0034] Figure 3 The second structural diagram of the oil pool in a tilted state;

[0035] Figure 4 A schematic diagram of the structure of a cooling device provided in an embodiment of the present application;

[0036] Figure 5 One of the structural schematic diagrams of the cooling device provided in the embodiment of the present application when it is in a tilted state;

[0037] Figure 6 The second structural schematic diagram of the cooling device provided in the embodiment of the present application when it is in a tilted state. Description of the drawings:

[0039] 010-oil pool; 011-oil; 012-oil pipe; 013-oil channel; 014-oil inlet; 100-cooling device; 10-housing; 20-circulation parts; 201-oil channel; 202-inlet; 203-outlet; 30-oil; 40-counterweight; 50-fixing parts. DETAILED DESCRIPTION

[0040] In order to enable ordinary persons in the art to better understand the technical solution of the present application, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the accompanying drawings.

[0041] It should be noted that the terms "first", "second", etc. in the specification and claims 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 data used in this way can be interchangeable where appropriate, so that the embodiments of the present application described herein can be implemented in an order other than those illustrated or described herein. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present application. On the contrary, they are merely examples of devices and methods consistent with some aspects of the present application as detailed in the attached claims.

[0042] The electric drive system is the main component of new energy vehicles, which can provide power for new energy vehicles to realize the operation of the vehicle. Among them, the electric drive system may include a reducer and a drive motor. Among them, the reducer needs to be lubricated during operation to ensure the smooth operation of the electric drive system. At the same time, the stator and rotor of the drive motor will generate heat during operation, and the stator and rotor need to be cooled to ensure the stable operation of the electric drive system.

[0043] In order to achieve the above lubrication and cooling, oil is generally used. In the related art, in order to achieve the transmission of oil, such as Figure 1 As shown, Figure 1 The schematic diagram of the structure of a cooling device of the related art is shown in FIG. 01. An oil pipe 012 is provided in the oil pool 010. An oil passage 013 is formed inside the oil pipe 012. An oil inlet 014 is formed at one end of the oil pipe 012. The oil inlet 014 is close to the bottom of the oil pool 010. At the same time, the oil pipe 012 is connected to an oil pump (not shown in the figure). In this way, the oil in the oil pool 010 can enter the oil pipe 012 through the oil pump and be transported from the oil pump to the location where cooling or lubrication is required.

[0044] It is known that during the operation of a vehicle, the vehicle may tilt forward or backward. For example, when the vehicle is traveling on an uphill or downhill section, the vehicle body will be tilted. Figure 1 The oil pool 010 shown will also tilt accordingly with the tilt of the vehicle body. Figure 2 and Figure 3 As shown, Figure 2 This is one of the structural schematic diagrams of the oil pool 010 in a tilted state. Figure 3 This is the second structural schematic diagram of the oil pool 010 in a tilted state. Since the oil pool 010 is tilted, the position of the oil 011 in the oil pool 010 will also change with the tilt of the oil pool 010.

[0045] However, if Figure 2 and Figure 3 As shown, the oil inlet 014 of the oil pipe 012 in the related art is fixed relative to the oil pool 010 and will not change position with the inclination of the oil pool 010. Figure 2 and Figure 3 As shown, as the position of the oil 011 in the oil pool 010 changes, the oil inlet 014 of the oil pipe 012 may be higher than the oil 011, and then separated from the oil 011. At this time, the oil pipe 012 can no longer absorb the oil 011 in the oil pool 010, resulting in empty suction.

[0046] like Figure 2 and Figure 3As shown, in order to prevent the oil 011 from being separated from the oil inlet 014 of the oil pipe 012, the oil 011 content in the oil pool 010 can be made higher. In this way, after the position of the oil 011 changes, the oil inlet 014 of the oil pipe 012 is not easily separated from the oil 011, thus avoiding the problem of empty suction. However, the above method requires adding a large amount of oil 011 to the oil pool 010, resulting in a high overall cost and a waste of energy for the oil 011.

[0047] The embodiment of the present application provides a vehicle. The embodiment of the present application does not specifically limit the specific type of the vehicle. For example, the vehicle provided in the embodiment of the present application may be an electric vehicle, a hybrid vehicle, or a solar vehicle. At the same time, the vehicle provided in the embodiment of the present application may also be a vehicle of different forms. For example, the vehicle provided in the embodiment of the present application may be a sedan, a sport utility vehicle (SUV), or a multi-purpose vehicle (MPV).

[0048] The vehicle may include a vehicle frame. The vehicle frame may form an overall shape structure of the vehicle exterior and form a seating space for accommodating passengers. The vehicle frame is formed with a door structure, and a user may enter and exit from the door structure.

[0049] In addition, in order to achieve the driving of the vehicle, the vehicle may also include an electric drive system assembly. The electric drive system assembly may include an electric drive system. Among them, the electric drive system may include a drive motor and a reducer. The drive motor may provide power, and the reducer may be connected to the drive motor. The reducer may adjust the speed so that the car runs at different speeds. Among them, according to the different driving modes of the electric drive system, the electric drive system may be divided into front-wheel drive, rear-wheel drive, and four-wheel drive arrangements.

[0050] In addition, the vehicle may also include a transmission system, which may be connected to the electric drive system and may transmit the power generated by the engine to the wheels.

[0051] In order to supply power to electrical components such as a drive motor, the vehicle provided in the embodiment of the present application further includes a battery system. The battery system may include a battery pack, which may be used to provide electrical energy. The battery pack may be connected to the vehicle's electric drive system and other electrical components. In this way, the electrical energy of the battery pack may be transmitted to various components of the vehicle for power supply.

[0052] Since the drive motor of the electric drive system generates a certain amount of heat during operation, it is necessary to cool the drive motor to prevent it from generating high temperature during operation and affecting the normal operation of the drive motor. At the same time, the reducer needs to be lubricated during operation to ensure smooth operation of the reducer and prevent jamming during vehicle operation, which in turn affects the user experience.

[0053] To this end, in order to cool the drive motor and lubricate the reducer, the electric drive system assembly provided in the embodiment of the present application may also include a cooling device, which can be used to cool the electric drive system of the vehicle. Figure 4 As shown, Figure 4 The schematic diagram of the structure of the cooling device 100 provided in the embodiment of the present application is shown, and the cooling device 100 may include a box body 10 and a flow member 20. The box body 10 has an accommodating cavity formed inside and an opening communicating with the accommodating cavity.

[0054] The accommodating cavity inside the box 10 can provide a storage space for the oil 30, and the opening on the box 10 can facilitate the input and output of the oil 30. The box 10 can be fixedly installed on the vehicle. Exemplarily, the box 10 can be installed on the vehicle by a snap-on method. Alternatively, the box 10 can also be fixed to the vehicle by bolts, which can be specifically designed according to actual conditions and is not further limited here.

[0055] In addition, it is understandable that the shape of the box 10 can be designed according to actual conditions. Figure 4 As shown, the box body 10 can be in the shape of a cuboid. In this case, the shape of the box body 10 is relatively regular, and the space occupied is also relatively regular, which is convenient for installation on the vehicle. Alternatively, the shape of the box body 10 can also be cylindrical.

[0056] Continue to refer to Figure 4 , the circulation member 20 is connected to the housing 10, and is at least partially located in the accommodating cavity. The interior of the circulation member 20 is hollow, and an oil passage 201 can be formed. An inlet 202 is formed at one end of the circulation member 20, and is located in the accommodating cavity. An outlet 203 is formed at the other end of the circulation member 20, and the outlet 203 is connected to the outside of the housing 10 through the opening of the housing 10. As a result, the oil 30 inside the housing 10 can enter the interior of the circulation member 20 through the inlet 202 of the circulation member 20, and can be sent to the outside of the housing 10 from the outlet 203 of the circulation member 20 to cool the drive motor and lubricate the reducer.

[0057] It is understandable that the electric drive system assembly may further include an oil pump (not shown in the figure). The oil pump is connected to the circulation member 20. The oil pump can provide power to extract the oil 30 in the circulation member 20 and transport it to the corresponding position of the drive motor or the reducer to achieve cooling of the drive motor or lubrication of the reducer.

[0058] The circulation member 20 may be made of a flexible material. Thus, the circulation member 20 may bend with gravity. Figure 5 and Figure 6 As shown, Figure 5 This is one of the structural schematic diagrams of the cooling device 100 provided in the embodiment of the present application when it is in a tilted state. Figure 6 The second structural schematic diagram of the cooling device 100 provided in the embodiment of the present application when it is in a tilted state, when the box body 10 tilts with the posture of the vehicle, the oil 30 will move to the lowest position of the box body 10 under the action of gravity. At the same time, since the circulation member 20 is made of a flexible material, the circulation member 20 will also change in unison with the oil 30 under the action of gravity. In this way, the inlet 202 can always change with the position change of the oil 30, so that the oil 30 is not easily separated from the inlet 202 of the circulation member 20, avoiding the problem of empty suction. At the same time, as mentioned above, since the circulation member 20 can bend under the action of gravity, there is no need to set more oil 30 in the box body 10 to ensure that the inlet of the circulation member 20 is in the oil 30, saving oil 30 resources and reducing costs.

[0059] It is understandable that the material of the circulation member 20 provided in the embodiment of the present application can be selected according to the actual situation, as long as it can achieve its bending deformation under the action of gravity. For example, the circulation member 20 can be made of rubber material. Or the circulation member 20 can also be made of silicone material.

[0060] In some embodiments, Figure 4 As shown, the cooling device 100 may further include a counterweight 40. The counterweight 40 is connected to the circulation member 20 and is close to one end where the inlet 202 of the circulation member 20 is located. Therefore, since the counterweight 40 has a certain weight, when the housing 10 is tilted, the counterweight 40 can make the end where the inlet 202 of the circulation member 20 is located always at the bottom of the housing 10 under the action of gravity, and the oil 30 will also move to the bottom of the housing 10 when the housing 10 is tilted, ensuring that the inlet 202 of the circulation member 20 can be in the oil 30, and the circulation member 20 can always extract the oil 30 to avoid empty suction.

[0061] It is understandable that the mass of the counterweight 40 can be relatively large, so that the counterweight 40 can better keep the end of the circulation member 20 forming the inlet 202 at the bottom of the box 10. Exemplarily, the counterweight 40 can be made of metal material. It is known that under the same size, the counterweight 40 made of metal material has a larger mass, which can better keep the end of the circulation member 20 forming the inlet 202 at the bottom of the box 10 under the action of gravity. Of course, the counterweight 40 can also be made of other materials, which can be selected according to actual conditions, and is only described as an example here.

[0062] Of course, in other embodiments, the cooling device 100 may not include the counterweight 40. At this time, the circulation member 20 can bend by its own gravity so that the end of the circulation member 20 forming the inlet 202 can be at the bottom of the box 10 when the box 10 is tilted.

[0063] Exemplarily, the circulation member 20 may be made of a first material and a second material. Among them, one end of the circulation member 20 where the inlet 202 is formed may be made of the first material, and the rest of the circulation member 20 may be made of the second material, and the density of the first material may be greater than the density of the second material. In this case, under the same size, the weight of the portion of the circulation member 20 made of the first material is greater than the weight of the circulation member 20 made of the second material, and the end of the circulation member 20 where the inlet 202 is formed is more likely to be kept at the lowest position under the action of gravity.

[0064] Of course, the circulation member 20 may also be made of the same material. At this time, a relatively soft material may be selected so that the circulation member 20 can be deformed better under the action of gravity.

[0065] In some embodiments, the counterweight 40 is provided with an opening, and the opening runs through the counterweight 40. One end of the circulation member 20 having an inlet 202 is located in the opening and connected to the counterweight 40. Thus, by providing an opening on the counterweight 40, the circulation member 20 can be provided in the opening to achieve connection with the circulation member 20. At the same time, the oil 30 can also enter the interior of the circulation member 20 through the opening of the counterweight 40 to achieve transmission of the oil 30.

[0066] The circulation member 20 can be interference fit with the opening of the counterweight member 40 to achieve connection with the counterweight member 40. Of course, the circulation member 20 can also be connected to the opening of the counterweight member 40 by bonding, as long as the connection between the counterweight member 40 and the circulation member 20 can be achieved, and no further limitation is made here.

[0067] In other embodiments, the weight 40 may be directly disposed on the peripheral wall of the circulation member 20 and connected to the circulation member 20. For example, the weight 40 may be in a block shape and directly bonded to the peripheral wall of the circulation member 20. In this way, the weight 40 may also play a good balancing role, so that the end of the circulation member 20 having the inlet 202 formed therein can be better located at the bottom of the box 10.

[0068] In addition, based on the above solution, when the counterweight 40 is directly disposed on the peripheral wall of the circulation member 20, in some embodiments, the number of the counterweight 40 can be multiple, and they are arranged at intervals around the circumference of the circulation member 20. Multiple counterweights 40 are respectively disposed on the peripheral wall of the circulation member 20, which can better achieve the counterweight effect.

[0069] In some embodiments, the two ends of the opening are arranged oppositely, and one end of the circulation member 20 formed with the inlet 202 extends into the interior of the opening through one end of the opening. Therefore, when the box 10 is tilted, the vicinity of the one end of the circulation member 20 formed with the inlet 202 can be arranged roughly along the direction of gravity under the action of the counterweight 40. Since the two ends of the opening are arranged oppositely, the one end of the circulation member 20 formed with the inlet 202 extends into the interior of the opening through one end of the opening, and the extension direction of the opening is also roughly along the direction of gravity, so that the other end of the opening can be better at the lowest position, thereby better ensuring that the oil 30 can pass through the opening and enter the interior of the circulation member 20.

[0070] Of course, in other embodiments, the two ends of the opening may not be arranged opposite to each other. In this case, the length of the circulation member 20 can be set to be relatively long. In this way, when the box body 10 is tilted, the counterweight 40 is at the lowest position of the box body 10 under the action of gravity, and the longer length of the circulation member 20 can also ensure that the counterweight 40 can contact the oil 30.

[0071] In some embodiments, Figure 4 As shown, the counterweight 40 is a spherical structure. Since the counterweight 40 is a spherical structure, the outer surface of the counterweight 40 is a relatively smooth curved surface without any sharp corners. In this way, the counterweight 40 is not likely to cause damage to the box body 10 during its movement in the box body 10, and there will be no jamming, and the movement is relatively smooth.

[0072] Of course, in other embodiments, the counterweight 40 may also be in other shapes. For example, the counterweight 40 may also be in a rectangular parallelepiped shape, or the counterweight 40 may also be in other shapes with curved outer contours and no edges or corners. The specific shape may be limited according to actual conditions, and is only described as an example here.

[0073] In some embodiments, Figure 4As shown, the cooling device 100 further includes a fixing member 50. The fixing member 50 is connected to the housing 10. One end of the circulation member 20 having the outlet 203 is connected to the fixing member 50, and the circulation member 20 is connected to the housing 10 through the fixing member 50. Since the fixing member 50 is provided, the circulation member 20 made of a flexible material can be connected to the fixing member 50 first, and then the fixing member 50 can be connected to the housing 10, which is convenient.

[0074] Exemplarily, the fixing member 50 can be made of metal material. Alternatively, the fixing member 50 can also be made of plastic. In this way, the fixing member 50 is a hard material, and the installation method is more convenient when installing.

[0075] Of course, in other embodiments, the circulation member 20 may also be directly connected to the housing 10. In this case, the connection between the circulation member 20 and the housing 10 can be achieved without providing the above-mentioned fixing member 50, and the composition of the cooling device 100 is simpler. Exemplarily, one end of the circulation member 20 having the outlet 203 may be directly bonded to the inside of the housing 10, and the outlet 203 of the circulation member 20 is arranged opposite to the opening of the housing 10.

[0076] Alternatively, the end of the circulation member 20 formed with the outlet 203 may be inserted into the opening of the housing 10. In this case, the end of the circulation member 20 formed with the outlet 203 may be located outside the housing 10. In this way, the oil pump may be more conveniently and directly connected to the end of the circulation member 20 formed with the outlet 203, and the connection is more convenient.

[0077] In some embodiments, Figure 4 As shown, the fixing member 50 is located in the housing 10. The fixing member 50 is provided with an avoidance hole (not shown in the figure). The avoidance hole is arranged opposite to the opening. One end of the circulation member 20 having an outlet 203 is located in the avoidance hole and is connected to the fixing member 50. Since the fixing member 50 is provided with an avoidance hole, and the avoidance hole is arranged opposite to the opening. In this way, the avoidance hole can be interconnected with the opening. Since one end of the circulation member 20 having an outlet 203 is located in the avoidance hole, the outlet 203 of the circulation member 20 can be connected to the outside through the avoidance hole, thereby transporting the oil 30 inside the housing 10 to the components that need to be cooled or lubricated.

[0078] In addition, since the fixing member 50 is located inside the box 10, it can provide a certain protection for the fixing member 50, preventing the fixing member 50 from being damaged by collision. Of course, in other embodiments, the fixing member 50 can also be located outside the box 10 and connected to the box 10. In this case, since the fixing member 50 is located outside the box 10, it is more convenient to install. In this case, a part of the circulation member 20 can be located outside the box 10 and connected to the fixing member 50.

[0079] It is understandable that the connection method of the circulation member 20 and the fixing member 50 can be selected according to the actual situation. For example, the circulation member 20 can be in the avoidance hole and have an interference fit with the avoidance hole. In this way, the circulation member 20 can be connected to the fixing member 50. At the same time, since the circulation member 20 is made of a flexible material and has a certain elasticity, the above method is also more convenient.

[0080] Of course, in other embodiments, the circulation member 20 may be fixed to the fixing member 50 in other ways. For example, the circulation member 20 may be located in the avoidance hole and bonded to the fixing member 50. In this way, the connection between the circulation member 20 and the fixing member 50 may be achieved by bonding.

[0081] In addition, based on the above solution, when the circulation member 20 is bonded to the fixing member 50, the end of the circulation member 20 with the outlet 203 formed thereon can also be located outside the avoidance hole. At this time, the outlet 203 of the circulation member 20 can be arranged opposite to the avoidance hole, and located on the side of the avoidance hole away from the opening of the box body 10. At this time, the oil can first enter the avoidance hole of the fixing member 50 through the outlet 203 of the circulation member 20, and then flow out of the box body 10 through the opening of the box body 10.

[0082] In some embodiments, Figure 4 As shown, the fixing member 50 is in the shape of a plate. One side of the fixing member 50 is in contact with the surface where the opening is located. In this way, when the flow member 20 is used to absorb the oil 30, since the fixing member 50 is in contact with the surface of the side where the opening is located, the suction force provided by the oil pump can be better transmitted to the inside of the flow member 20, ensuring the smooth absorption of the oil 30 and avoiding the situation where the suction force cannot be effectively transmitted to the inside of the flow member 20 due to the existence of gaps.

[0083] In some embodiments, the cooling device 100 may further include a fastener. The fastener passes through one of the box body 10 and the fixing member 50, and is threadedly connected to the other of the box body 10 and the fixing member 50. Thus, the fixing member 50 and the box body 10 can be connected to each other through the fastener, and the connection is relatively firm and not easy to fall off. Exemplarily, the fastener may be a screw.

[0084] It is understandable that the fastener can be connected from different positions. For example, when connecting from the outside of the box 10, the fastener can penetrate the box 10 and be threadedly connected to the fixing member 50. When connecting from the inside of the box 10, since the fixing member 50 is located inside the box 10, the fastener can penetrate the fixing member 50 and be threadedly connected to the box 10. The specific connection method can be selected according to actual conditions, and is only described here as an example.

[0085] In addition, in some embodiments, the number of fasteners may be multiple. The multiple fasteners are respectively connected to the box body 10 and the fixing member 50. Thus, the connection between the box body 10 and the fixing member 50 can be made more secure by the multiple fasteners.

[0086] In order to facilitate the use of fasteners to connect the fixing member 50 and the box body 10. In some embodiments, the box body 10 may include a box body and a box cover. The box body and the box cover are detachably connected, and the box cover may be provided with the above-mentioned opening. In this way, when the fixing member 50 is installed using the fastener, the fixing member 50 may be first installed on the box cover through the fastener. In this way, the circulation member 20 and the fixing member 50 can be fixed on the box cover. Then, the box cover and the box body are installed, and the fixing member 50 can be installed inside the box body 10.

[0087] Of course, in other embodiments, the fixing member 50 may also be snap-fitted with the box body 10. In this case, the fixing member 50 and the box body 10 may be provided with corresponding snap-fitting structures to achieve the connection between the two. Alternatively, the fixing member 50 may also be directly bonded with the box body 10 to achieve the connection between the fixing member 50 and the box body 10.

[0088] As mentioned above, the fixing member 50 is plate-shaped. One side of the fixing member 50 is in contact with the surface where the opening is located. In other embodiments, a circulation channel can be formed inside the fixing member 50. The circulation channel runs through the fixing member 50. The fixing member 50 is inserted into the opening and connected to the housing 10. One end of the circulation member 20 having an outlet 203 is located in the circulation channel and connected to the fixing member 50. Based on the above scheme, the oil pump can be directly connected to the internal channel of the fixing member 50. In this way, the suction force of the oil pump can also be better transmitted to the inside of the circulation member 20, achieving a good suction effect.

[0089] Based on the above scheme, the fixing member 50 can be a hollow columnar structure, and the connection method between the fixing member 50 and the box body 10 can also be selected according to actual conditions. Exemplarily, the fixing member 50 can be interference-fitted in the opening. In this way, the connection between the box body 10 and the fixing member 50 can be achieved. Of course, in other embodiments, the outer wall of the fixing member 50 can be formed with an external thread. The inner wall of the opening can be formed with an internal thread. The external thread of the fixing member 50 can cooperate with the internal thread of the opening. Thus, the connection between the fixing member 50 and the box body 10 can also be achieved through the cooperation between the external thread of the fixing member 50 and the internal thread of the opening.

[0090] When the fixing member 50 is inserted into the opening and connected to the box body 10, during the installation process, the fixing member 50 and the circulation member 20 can be directly connected to each other. Then, the end of the circulation member 20 with the inlet 202 is extended into the interior of the box body 10 through the opening, and the fixing member 50 is inserted into the opening and connected to the box body 10, so that the overall installation process can be completed, and the installation process is relatively simple and convenient.

[0091] The above are only specific implementations of the present application, but the protection scope of the present application is not limited thereto, and any changes or substitutions within the technical scope disclosed in the present application should be included in the protection scope of the present application. Therefore, the protection scope of the present application should be based on the protection scope of the claims.

Claims

1. A cooling device for cooling an electric drive system of a vehicle, characterized in that: The cooling device comprises: A box body, wherein a receiving cavity is formed inside the box body and an opening communicating with the receiving cavity is provided; and A circulation member is connected to the box body and is at least partially located in the accommodating cavity; the interior of the circulation member is hollow, and an inlet is formed at one end and is located in the accommodating cavity; an outlet is formed at the other end of the circulation member, and the outlet is connected to the outside of the box body through the opening; wherein the circulation member is made of flexible material.

2. The cooling device according to claim 1, characterized in that: The cooling device also includes: A counterweight is connected to the flow member and is close to one end of the flow member where the inlet is located.

3. The cooling device according to claim 2, characterized in that: The counterweight component is provided with an opening, and the opening passes through the counterweight component; the end of the circulation component having the inlet formed therein is located in the opening and connected to the counterweight component.

4. The cooling device according to claim 3, characterized in that: The two ends of the opening are arranged opposite to each other, and one end of the flow member having the inlet formed therein extends into the interior of the opening through one end of the opening.

5. The cooling device according to claim 2, characterized in that: The counterweight is a spherical structure.

6. The cooling device according to any one of claims 1 to 5, characterized in that: The cooling device also includes: A fixing member is connected to the box body; one end of the flow member having the outlet is connected to the fixing member, and the flow member is connected to the box body through the fixing member.

7. The cooling device according to claim 6, characterized in that: The fixing member is located in the box body; the fixing member is provided with an avoidance hole; the avoidance hole is arranged opposite to the opening; the end of the flow member having the outlet formed therein is located in the avoidance hole and is connected to the fixing member.

8. The cooling device according to claim 7, characterized in that: The fixing piece is plate-shaped; one side of the fixing piece is in contact with the surface where the opening is located.

9. The cooling device according to claim 7, characterized in that: The cooling device also includes: A fastener penetrates through one of the box body and the fixing member and is threadedly connected to the other of the box body and the fixing member.

10. The cooling device according to claim 6, characterized in that: A circulation channel is formed inside the fixing member; the circulation channel penetrates the fixing member; the fixing member is inserted into the opening and connected to the box body; one end of the circulation member having the outlet is located in the circulation channel and connected to the fixing member.

11. An electric drive system assembly, characterized in that: The cooling device comprises the cooling device described in any one of claims 1 to 10.

12. A vehicle, characterized in that: Including the electric drive system assembly as described in claim 11.

Images