Lubricating and cooling system and vehicle with same

Abstract

The utility model discloses a lubricating and cooling system and a vehicle with the lubricating and cooling system, the lubricating and cooling system comprises a driving pump, an oil tank, a lubricating pump and a cooling pump, a first motor and a second motor; an inlet of the first oil way is connected with an outlet of the driving pump, and an outlet of the first oil way is communicated to the first motor; an inlet of the second oil way is connected with an outlet of the driving pump, and an outlet of the second oil way is communicated to a second motor; and the control valve is connected between the outlet of the driving pump and the first oil way and the second oil way, and the control valve is used for controlling communication between the driving pump and the first oil way and / or the second oil way. According to the lubricating and cooling system disclosed by the utility model, the working energy consumption of the driving pump can be reduced, so that the overall energy consumption of the lubricating and cooling system can be reduced; meanwhile, the use of parts of the lubricating and cooling system can be reduced, the integration of the lubricating and cooling system is improved, and the space proportion of the lubricating and cooling system in the gearbox is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of vehicles, in particular to a lubrication cooling system and a vehicle with the same. Background Art

[0002] The relevant technology points out that the key components of the automotive power system mainly include the motor system, the transmission system and the lubrication and cooling system. Among them, the lubrication and cooling system provides lubrication and cooling oil for the motor system and the transmission system to ensure their efficient and reliable operation. Therefore, the lubrication and cooling system is crucial to the stable operation of the electric system and the transmission system. However, the lubrication and cooling solutions in mature models on the current market have the problems of high cost, large layout space, low system efficiency and high energy consumption. Utility Model Content

[0003] The utility model aims to solve at least one of the technical problems existing in the prior art. To this end, the utility model proposes a lubrication and cooling system, which can reduce the working energy consumption of the drive pump, thereby reducing the overall energy consumption of the lubrication and cooling system; at the same time, it can also reduce the use of lubrication and cooling system parts, reduce the cost of the lubrication and cooling system, improve the integration of the lubrication and cooling system, and reduce the space occupied by the lubrication and cooling system in the gearbox.

[0004] The utility model also provides a vehicle with the lubrication and cooling system.

[0005] According to the first aspect of the utility model, the lubrication and cooling system includes: a drive pump, the inlet of the drive pump is connected to the oil tank; a first motor and a second motor; a first oil circuit, the inlet of the first oil circuit is connected to the outlet of the drive pump, and the outlet of the first oil circuit is connected to the first motor; a second oil circuit, the inlet of the second oil circuit is connected to the outlet of the drive pump, and the outlet of the second oil circuit is connected to the second motor; a control valve, the control valve is connected between the outlet of the drive pump and the first oil circuit and the second oil circuit, and the control valve is used to control the connection between the drive pump and the first oil circuit and / or the second oil circuit.

[0006] According to the lubrication and cooling system of the utility model, by setting a control valve, the drive pump can supply oil to the first motor or the second motor alone, and can supply oil to the first motor and the second motor at the same time. Therefore, when the first motor or the second motor works alone, the drive pump only needs to provide the driving force of the required amount of oil for the first motor or the second motor. Therefore, the working energy consumption of the drive pump can be reduced, the oil supply efficiency of the drive pump can be improved, and the overall energy consumption of the lubrication and cooling system can be reduced. At the same time, by using a drive pump and a control valve to realize switching oil supply under different power modes, the use of components of the lubrication and cooling system can also be reduced, thereby reducing the overall production cost of the lubrication and cooling system, improving the integration of the lubrication and cooling system, realizing the miniaturization of the lubrication and cooling system, reducing the space occupied by the lubrication and cooling system in the gearbox, and improving installation convenience.

[0007] According to some embodiments of the present utility model, the control valve is an electrically controlled three-way valve; and / or, the control valve is a three-way proportional valve.

[0008] According to some embodiments of the utility model, the first motor includes a first stator and a first rotor, and the lubrication and cooling system also includes a first transmission system connected to the first motor; the first oil circuit includes a first branch, a second branch and a third branch, and the first branch, the second branch and the third branch are connected in parallel, wherein the outlet of the first branch is connected to the first stator, the outlet of the second branch is connected to the first rotor, and the outlet of the third branch is connected to the first transmission system.

[0009] According to some embodiments of the present utility model, a first throttling structure is serially connected to the first branch, the second branch and the third branch, and the first throttling structure is integrally formed with the housing of the first motor.

[0010] According to some embodiments of the utility model, the second motor includes a second stator and a second rotor, and the lubrication and cooling system also includes a second transmission system connected to the second motor; the second oil circuit includes a fourth branch, a fifth branch and a sixth branch, and the fourth branch, the fifth branch and the sixth branch are connected in parallel, wherein the outlet of the fourth branch is connected to the second stator, the outlet of the fifth branch is connected to the second rotor, and the outlet of the sixth branch is connected to the second transmission system.

[0011] According to some embodiments of the present utility model, the fourth branch, the fifth branch and the sixth branch are all connected in series with a second throttling structure, and the second throttling structure is integrally formed with the housing of the second motor.

[0012] According to some embodiments of the utility model, the lubrication and cooling system also includes: an oil supply pipeline, one end of which is connected to the oil tank, and the other end of which is connected to the inlet of the drive pump; and a filter, which is arranged in the oil tank and connected between the oil tank and the oil inlet of the drive pump.

[0013] According to some embodiments of the present utility model, the lubrication cooling system further includes: a heat exchanger connected between the outlet of the drive pump and the control valve.

[0014] According to some embodiments of the utility model, the driving pump includes: a pump motor and a controller, the pump motor is electrically connected to the controller, and the controller and the control valve are electrically connected to the vehicle controller.

[0015] A vehicle according to a second aspect of the utility model comprises a lubrication and cooling system according to the first aspect of the utility model.

[0016] According to the vehicle of the utility model, the lubrication and cooling system of the first aspect is provided, thereby improving the overall performance of the vehicle.

[0017] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of a lubrication and cooling system according to an embodiment of the utility model.

[0019] Reference numerals:

[0020] 100. Lubrication and cooling system;

[0021] 10. Driving pump; 11. Pump motor;

[0022] 20. a first motor; 21. a first stator; 22. a first rotor;

[0023] 30. second motor; 31. second stator; 32. second rotor;

[0024] 40, first oil circuit; 41, first branch circuit; 42, second branch circuit; 43, third branch circuit; 44, first throttling structure;

[0025] 50, second oil circuit; 51, fourth branch circuit; 52, fifth branch circuit; 53, sixth branch circuit; 54, second throttling structure;

[0026] 60. Control valve;

[0027] 71. First transmission system; 72. Second transmission system;

[0028] 81. Oil supply pipeline; 82. Filter; 83. Heat exchanger; 84. Oil tank. DETAILED DESCRIPTION

[0029] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and should not be construed as limiting the present invention.

[0030] Reference below Figure 1 A lubrication and cooling system 100 according to an embodiment of a first aspect of the present invention is described. The lubrication and cooling system 100 is used in a vehicle.

[0031] like Figure 1 As shown, the lubrication and cooling system 100 according to the first embodiment of the utility model includes: a drive pump 10, a first motor 20, a second motor 30, a first oil circuit 40, a second oil circuit 50 and a control valve 60.

[0032] Among them, the inlet of the driving pump 10 is connected to the oil tank 84; the inlet of the first oil circuit 40 is connected to the outlet of the driving pump 10, and the outlet of the first oil circuit 40 is connected to the first motor 20; the inlet of the second oil circuit 50 is connected to the outlet of the driving pump 10, and the outlet of the second oil circuit 50 is connected to the second motor 30. Specifically, the first motor 20 and the second motor 30 are used as the power system of the vehicle, mainly for providing driving force for the operation of the vehicle; the driving pump 10 can pump the lubricating oil in the oil tank 84 into the first oil circuit 40 and the second oil circuit 50, and then transfer it to the first motor 20 and the second motor 30 through the first oil circuit 40 and the second oil circuit 50 to lubricate and cool the first motor 20 and the second motor 30, thereby ensuring the normal operation of the vehicle.

[0033] The control valve 60 is connected between the outlet of the driving pump 10 and the first oil circuit 40 and the second oil circuit 50 . The control valve 60 is used to control the communication between the driving pump 10 and the first oil circuit 40 and / or the second oil circuit 50 . That is to say, the control valve 60 can control the drive pump 10 to be connected to the first oil circuit 40 alone, or to be connected to the second oil circuit 50 alone, or to be connected to the first oil circuit 40 and the second oil circuit 50 at the same time. Therefore, when the first motor 20 or the second motor 30 works alone, the control valve 60 can make the drive pump 10 connected only to the first oil circuit 40 or the second oil circuit 50, so that the drive pump 10 only needs to provide the driving force of the required amount of oil for the first motor 20 or the second motor 30. Therefore, the energy consumption of the drive pump 10 can be reduced, the efficiency of the drive pump 10 can be improved, and the overall energy consumption of the lubrication and cooling system 100 can be reduced; when the first motor 20 and the second motor 30 work at the same time, the controller can make the drive pump 10 connected to the first oil circuit 40 and the second oil circuit 50 at the same time, and then the first motor 20 and the second motor 30 can be lubricated and cooled at the same time to ensure the normal operation of the vehicle.

[0034] According to the lubrication and cooling system 100 of the embodiment of the utility model, by setting the control valve 60, the drive pump 10 can supply oil to the first motor 20 or the second motor 30 alone, and can supply oil to the first motor 20 and the second motor 30 at the same time. Therefore, when the first motor 20 or the second motor 30 works alone, the drive pump 10 only needs to provide the driving force of the first motor 20 or the second motor 30 with the required amount of oil. Therefore, the working energy consumption of the drive pump 10 can be reduced, the oil supply efficiency of the drive pump 10 can be improved, and the overall energy consumption of the lubrication and cooling system 100 can be reduced; at the same time, by using a drive pump 10 and a control valve 60 to realize the switching oil supply under different power modes, the use of components of the lubrication and cooling system 100 can also be reduced, thereby reducing the overall production cost of the lubrication and cooling system 100, improving the integration of the lubrication and cooling system 100, realizing the miniaturization of the lubrication and cooling system 100, reducing the space occupied by the lubrication and cooling system 100 in the gearbox, and improving the convenience of installation.

[0035] According to some embodiments of the utility model, the control valve 60 is an electrically controlled three-way valve. The electrically controlled three-way valve has three inlets and outlets, which are respectively connected to the outlet of the drive, the inlet of the first oil circuit 40 and the inlet of the second oil circuit 50. Thus, one valve can be used to meet the oil supply requirements of the vehicle in different driving modes, thereby reducing the use of parts and components, and further reducing the overall cost of the lubrication and cooling system 100. At the same time, the electrically controlled three-way valve can control the opening of the valve 60 according to the electric control signal, thereby realizing the automation of switching the oil circuit and improving the operating efficiency of the lubrication and cooling system 100.

[0036] According to some embodiments of the present invention, the control valve 60 is a three-way proportional valve. The three-way proportional valve can adjust the opening of the valve by an electric control signal, thereby adjusting the flow rate, and when oil is supplied to the first motor 20 and the second motor 30 at the same time, the oil supply can be proportionally adjusted according to the different needs of the two motors, thereby reducing the energy consumption of the lubrication and cooling system 100.

[0037] According to some embodiments of the present invention, Figure 1 As shown, the first motor 20 includes a first stator 21 and a first rotor 22, and the lubrication and cooling system 100 also includes a first transmission system 71 connected to the first motor 20; the first oil circuit 40 includes a first branch 41, a second branch 42 and a third branch 43, and the first branch 41, the second branch 42 and the third branch 43 are connected in parallel, wherein the outlet of the first branch 41 is connected to the first stator 21, the outlet of the second branch 42 is connected to the first rotor 22, and the outlet of the third branch 43 is connected to the first transmission system 71.

[0038] Specifically, the first branch 41 is used to provide lubricating cooling oil to the first stator 21, the second branch 42 is used to provide lubricating oil to the first rotor 22, and the third branch 43 is used to provide lubricating oil to the first transmission system 71, wherein the first branch 41, the second branch 42 and the third branch 43 are connected in parallel, so that the lubricating oil can enter each branch at the same time to cool the components to be cooled, thereby ensuring efficient and reliable operation of the first motor 20 and the first transmission system 71.

[0039] According to some embodiments of the present invention, Figure 1 As shown, the first branch 41, the second branch 42 and the third branch 43 are all connected in series with a first throttling structure 44, and the first throttling structure 44 is formed integrally with the housing of the first motor 20. The first throttling structure 44 can be used to distribute the flow of lubricating oil entering each branch, so that the flow of lubricating oil at each cooling component meets the respective cooling and lubrication requirements; the first throttling structure 44 is formed integrally with the housing of the first motor 20, which can reduce the use of parts and components, thereby reducing the production cost of the lubrication and cooling system 100.

[0040] Furthermore, the first throttling structure 44 may be a throttling hole, and the diameter of each throttling hole may be designed according to the cooling flow rate required by the cooling component.

[0041] According to some embodiments of the present invention, Figure 1As shown, the second motor 30 includes a second stator 31 and a second rotor 32, and the lubrication and cooling system 100 also includes a second transmission system 72 connected to the second motor 30; the second oil circuit 50 includes a fourth branch 51, a fifth branch 52 and a sixth branch 53, and the fourth branch 51, the fifth branch 52 and the sixth branch 53 are connected in parallel, wherein the outlet of the fourth branch 51 is connected to the second stator 31, the outlet of the fifth branch 52 is connected to the second rotor 32, and the outlet of the sixth branch 53 is connected to the second transmission system 72.

[0042] Specifically, the fourth branch 51 is used to provide lubricating cooling oil to the second stator 31, the fifth branch 52 is used to provide lubricating oil to the second rotor 32, and the sixth branch 53 is used to provide lubricating oil to the second transmission system 72, wherein the fourth branch 51, the fifth branch 52 and the sixth branch 53 are connected in parallel, so that the lubricating oil can enter each branch at the same time to cool the components to be cooled, thereby ensuring efficient and reliable operation of the second motor 30 and the second transmission system 72.

[0043] According to some embodiments of the present invention, Figure 1 As shown, the fourth branch 51, the fifth branch 52 and the sixth branch 53 are all connected in series with the second throttling structure 54, and the second throttling structure 54 is formed integrally with the housing of the second motor 30. The second throttling structure 54 can be used to distribute the flow of lubricating oil entering each branch, so that the flow of lubricating oil at each cooling component meets the respective cooling and lubrication requirements; the second throttling structure 54 is formed integrally with the housing of the second motor 30, which can reduce the use of components, thereby reducing the production cost of the lubrication and cooling system 100.

[0044] Furthermore, the second throttling structure 54 may be a throttling hole, and the diameter of each throttling hole may be designed according to the cooling flow rate required by the cooling component.

[0045] According to some embodiments of the present invention, Figure 1 As shown, the lubrication and cooling system 100 also includes: an oil supply pipeline 81 and a filter 82, one end of the oil supply pipeline 81 is connected to the oil tank 84, and the other end of the oil supply pipeline 81 is connected to the inlet of the drive pump 10; the filter 82 is arranged in the oil tank 84 and connected between the oil tank 84 and the oil inlet of the drive pump 10. Among them, the oil supply pipeline 81 is mainly used for the delivery of lubricating oil, and the lubricating oil in the oil tank 84 is delivered to the drive pump 10, and then the drive pump 10 works so that it can be pumped to the lubricated and cooled parts; the filter 82 is mainly used for filtering impurities in the lubricating oil, which can effectively prevent the impurities from clogging the drive pump 10, and then ensure the normal operation of the drive pump 10.

[0046] According to some embodiments of the present invention, Figure 1As shown, the lubrication and cooling system 100 further includes: a heat exchanger 83, which is connected between the outlet of the driving pump 10 and the control valve 60. The heat exchanger 83 can exchange heat for the lubricating oil, so that the temperature of the lubricating oil is kept within an allowable range, thereby achieving lubrication and cooling of the power system and the transmission system, thereby ensuring the safety of the vehicle.

[0047] According to some embodiments of the present invention, Figure 1 As shown, the driving pump 10 includes: a pump motor 11 and a controller, the pump motor 11 is electrically connected to the controller, and the controller and the control valve 60 are electrically connected to the vehicle controller. Among them, the pump motor 11 provides driving force for the driving pump 10, and the controller can control the start and stop of the pump motor 11 and the speed according to the external signal, thereby realizing the oil supply automation of the driving pump 10; at the same time, the controller and the control valve 60 are connected to the vehicle controller, so that the driving pump 10 can adjust the work of the pump motor 11 according to the driving mode of the vehicle, and the control valve 60 can adjust the working state according to the driving mode of the vehicle, and provide lubricating oil to the corresponding motor or dual motors, thereby realizing the maximum utilization efficiency of the lubricating oil and reducing the energy consumption of the lubrication cooling system 100.

[0048] For example, when the first motor 20 works alone, the vehicle controller can determine the required flow rate of lubricating cooling oil according to the current power and temperature status of the first motor 20, and then send a signal to the controller and the control valve 60 to make the drive pump 10 run at a certain speed and open the valve of the control valve 60 connected to the first oil circuit 40. At this time, the drive pump 10 can drive the oil inside the oil tank 84 to enter the first oil circuit 40, and then provide lubricating cooling oil to the first motor 20 through the first oil circuit 40, thereby realizing lubrication and cooling of the first motor 20.

[0049] When the second motor 30 works alone, the vehicle controller can determine the required flow rate of lubricating cooling oil according to the current power and temperature status of the second motor 30, and then send a signal to the controller and the control valve 60 to make the drive pump 10 run at a certain speed and open the valve of the control valve 60 connected to the second oil circuit 50. At this time, the drive pump 10 can drive the oil inside the oil tank 84 to enter the second oil circuit 50, and then provide lubricating cooling oil to the second motor 30 through the second oil circuit 50, thereby realizing lubrication and cooling of the second motor 30.

[0050] When the first motor 20 and the second motor 30 are working at the same time, the vehicle controller can determine the required flow rate of lubricating and cooling oil of each of the first motor 20 and the second motor 30 according to the current power and temperature status of the first motor 20 and the second motor 30, and then send a signal to the controller and the control valve 60 to make the drive pump 10 run at a certain speed and simultaneously open the valve of the control valve 60 connected to the first oil circuit 40 and the second oil circuit 50. At this time, the drive pump 10 can drive the oil inside the oil tank 84 to enter the first oil circuit 40 and the second oil circuit 50 at the same time, and then lubricate and cool the first motor 20 and the second motor 30.

[0051] Optionally, the first motor 20 and the second motor 30 may both be generators, or both be drive motors, or one of the first motor 20 and the second motor 30 may be a generator and the other may be a drive motor.

[0052] The vehicle according to the second embodiment of the utility model comprises the lubrication and cooling system 100 according to the first embodiment of the utility model.

[0053] According to the vehicle of the embodiment of the utility model, the lubrication and cooling system 100 of the first embodiment is provided, thereby improving the overall performance of the vehicle.

[0054] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0055] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0056] In the present invention, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", "fix" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, an electrical connection, or a communication; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0057] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0058] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A lubrication and cooling system, characterized in that: include: A driving pump, wherein the inlet of the driving pump is connected to the oil tank; a first motor and a second motor; a first oil circuit, wherein an inlet of the first oil circuit is connected to an outlet of the driving pump, and an outlet of the first oil circuit is connected to the first motor; a second oil circuit, wherein an inlet of the second oil circuit is connected to an outlet of the driving pump, and an outlet of the second oil circuit is connected to the second motor; A control valve is connected between the outlet of the driving pump and the first oil circuit and the second oil circuit, and the control valve is used to control the communication between the driving pump and the first oil circuit and / or the second oil circuit.

2. The lubrication and cooling system according to claim 1, characterized in that: The control valve is an electrically controlled three-way valve; and / or the control valve is a three-way proportional valve.

3. The lubrication and cooling system according to claim 1, characterized in that: The first motor includes a first stator and a first rotor, and the lubrication and cooling system also includes a first transmission system connected to the first motor; The first oil circuit includes a first branch, a second branch and a third branch, the first branch, the second branch and the third branch are connected in parallel, The outlet of the first branch is connected to the first stator, the outlet of the second branch is connected to the first rotor, and the outlet of the third branch is connected to the first transmission system.

4. The lubrication and cooling system according to claim 3, characterized in that: The first branch, the second branch and the third branch are all connected in series with a first throttling structure, and the first throttling structure is integrally formed with the housing of the first motor.

5. The lubrication and cooling system according to any one of claims 1 to 4, characterized in that: The second motor includes a second stator and a second rotor, and the lubrication and cooling system also includes a second transmission system connected to the second motor; The second oil circuit includes a fourth branch, a fifth branch and a sixth branch, and the fourth branch, the fifth branch and the sixth branch are connected in parallel. Among them, the outlet of the fourth branch is connected to the second stator, the outlet of the fifth branch is connected to the second rotor, and the outlet of the sixth branch is connected to the second transmission system.

6. The lubrication and cooling system according to claim 5, characterized in that: The fourth branch, the fifth branch and the sixth branch are all connected in series with a second throttling structure, and the second throttling structure is integrally formed with the housing of the second motor.

7. The lubrication and cooling system according to claim 3, characterized in that: Also includes: An oil supply pipeline, one end of which is connected to the oil tank, and the other end of which is connected to the inlet of the driving pump; A filter is disposed in the oil tank and connected between the oil tank and the oil inlet of the driving pump.

8. The lubrication and cooling system according to claim 1, characterized in that: Also includes: A heat exchanger is connected between the outlet of the driving pump and the control valve.

9. The lubrication and cooling system according to claim 1, characterized in that: The driving pump comprises: a pump motor and a controller, the pump motor is electrically connected to the controller, and the controller and the control valve are electrically connected to a vehicle controller.

10. A vehicle, characterized in that: Comprising a lubrication and cooling system according to any one of claims 1-9.

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