Gearbox cooling device applied to new energy commercial vehicle and new energy commercial vehicle

Abstract

The utility model discloses a gearbox cooling device applied to a new energy commercial vehicle and the new energy commercial vehicle, and relates to the technical field of lubricating oil cooling. In the device, a heat management assembly is connected with a motor through a liquid inlet pipeline and a backflow pipeline and used for conveying cooling liquid to the motor. The control valve and the three-way valve are both arranged on one section of the middle of the backflow pipeline, and the control valve is closer to the motor than the three-way valve. The control valve and the three-way valve are connected through a parallel pipeline and a gearbox heat exchanger, and the control valve can receive an instruction to adjust the flow of cooling liquid flowing to the gearbox heat exchanger. Therefore, according to the device, by adjusting the control valve, the cooling liquid flowing through the motor flows through the gearbox heat exchanger located in the gearbox before flowing back to the heat management assembly, so that lubricating oil in the gearbox is cooled, and the cooling liquid flowing through the motor is reused.

Description

TECHNICAL FIELD

[0001] The present specification relates to the technical field of lubricating oil cooling, and particularly relates to a gearbox cooling device applied to a new energy commercial vehicle and the new energy commercial vehicle. BACKGROUND

[0002] In the gearbox of the new energy commercial vehicle, lubricating oil is usually used to lubricate the gear. During the driving process of the vehicle, the friction between the gears will cause the lubricating oil to heat up, and then the temperature of the lubricating oil will be too high, which will affect the transmission between the gears, and even cause abnormal wear of the gear shaft.

[0003] In the prior art, a temperature control device is usually separately arranged in the gearbox to heat or cool the lubricating oil, such as the utility model patent with the publication number CN213808802U.

[0004] However, this requires additional arrangement of a large number of components in the gearbox, which increases the failure rate and has poor effect. Utility model content

[0005] The present specification provides a gearbox cooling device applied to a new energy commercial vehicle and the new energy commercial vehicle to at least partially solve the above problems existing in the prior art.

[0006] The present specification adopts the following technical solutions:

[0007] The present specification provides a gearbox cooling device applied to a new energy commercial vehicle, which comprises a thermal management assembly, an electric motor, a gearbox heat exchanger, a gearbox, a control valve and a three-way valve.

[0008] The thermal management assembly is connected with the electric motor through an inlet pipe and a return pipe, and is used to deliver cooling liquid to the electric motor through the inlet pipe.

[0009] The control valve and the three-way valve are arranged in a middle section of the return pipe, and the control valve is closer to the electric motor than the three-way valve. The control valve and the three-way valve are connected with the gearbox heat exchanger through a parallel pipe. The control valve can receive an instruction to adjust the flow of the cooling liquid flowing to the gearbox heat exchanger.

[0010] The gearbox heat exchanger is arranged inside the gearbox and contacts with the lubricating oil in the gearbox. The gearbox heat exchanger is used to cool the lubricating oil through the cooling liquid flowing through the inside of the gearbox heat exchanger.

[0011] Preferably, the electric motor is a water-cooled motor.

[0012] The cooling liquid is water.

[0013] Preferably, the gearbox heat exchanger is a plate heat exchanger, a copper tube heat exchanger or a fin heat exchanger.

[0014] Preferably, the new energy commercial vehicle is provided with a vehicle control center.

[0015] The vehicle control center is in communication connection with the control valve, and is used to send an instruction to the control valve to instruct the control valve to adjust the flow of the cooling liquid flowing to the gearbox heat exchanger.

[0016] In another aspect, the present specification also provides a gearbox cooling device applied to a new energy commercial vehicle, comprising a thermal management assembly, an electric motor, a gearbox heat exchanger, a gearbox and an electronic four-way valve.

[0017] The thermal management assembly is connected with the electric motor through an inlet pipe and a return pipe, respectively, and is used to deliver cooling liquid to the electric motor through the inlet pipe.

[0018] The electronic four-way valve is arranged in the middle section of the return pipe through G end and H end, and the electronic four-way valve is also connected with the gearbox heat exchanger through I end, J end and a parallel pipe; the electronic four-way valve can receive an instruction to adjust the flow of the cooling liquid flowing to the gearbox heat exchanger.

[0019] The gearbox heat exchanger is arranged in the gearbox, and is in contact with lubricating oil in the gearbox; the gearbox heat exchanger is used to cool the lubricating oil through the cooling liquid flowing through the inside of the gearbox heat exchanger.

[0020] Preferably, the electric motor is a water-cooled motor.

[0021] The cooling liquid is water.

[0022] Preferably, the gearbox heat exchanger is a plate heat exchanger, a copper tube heat exchanger or a fin heat exchanger.

[0023] Preferably, in the electronic four-way valve, the G end is in communication with the H end and the I end, respectively, and can adjust the flow of the cooling liquid flowing to the H end and the I end.

[0024] The H end is also in communication with the J end.

[0025] Preferably, the new energy commercial vehicle is provided with a vehicle control center.

[0026] The vehicle control center is in communication connection with the electronic four-way valve, and is used to send an instruction to the electronic four-way valve to instruct the electronic four-way valve to adjust the flow of the cooling liquid flowing to the gearbox heat exchanger.

[0027] In another aspect, the present specification also provides a new energy commercial vehicle, which comprises the gearbox cooling device for a new energy commercial vehicle provided by any one of the above aspects.

[0028] The above at least one technical solution adopted by the present specification can achieve the following beneficial effects:

[0029] According to the above embodiment, the gearbox cooling device for a new energy commercial vehicle comprises a thermal management assembly, an electric motor, a gearbox heat exchanger, a gearbox, a control valve and a three-way valve. The thermal management assembly is connected to the electric motor through an inlet pipe and a return pipe, respectively, and is configured to deliver cooling liquid to the electric motor through the inlet pipe. The control valve and the three-way valve are both arranged at a middle section of the return pipe, and the control valve is closer to the electric motor than the three-way valve. The control valve and the three-way valve are connected to the gearbox heat exchanger through a parallel pipe, and the control valve is capable of receiving an instruction to adjust the flow of cooling liquid flowing to the gearbox heat exchanger. The gearbox heat exchanger is arranged inside the gearbox and in contact with lubricating oil in the gearbox, and is configured to cool the lubricating oil by the cooling liquid flowing through the inside of the gearbox heat exchanger.

[0030] According to the above content, it can be seen that by adjusting the control valve, the cooling liquid flowing through the electric motor can flow through the gearbox heat exchanger arranged inside the gearbox before flowing back to the thermal management assembly, thereby cooling the lubricating oil in the gearbox, and realizing the reuse of the cooling liquid flowing through the electric motor. BRIEF DESCRIPTION OF DRAWINGS

[0031] The accompanying drawings, which are included to provide a further understanding of the present specification, constitute a part of the present specification, and the illustrative embodiments of the present specification and their description serve to explain the present specification, and do not constitute an improper limitation on the present specification. In the drawings:

[0032] Figure 1 A structural schematic diagram of the gearbox cooling device for a new energy commercial vehicle provided by an embodiment of the present specification is shown in the figure;

[0033] Figure 2 A structural schematic diagram of the gearbox cooling device for a new energy commercial vehicle provided by an embodiment of the present specification is shown in the figure;

[0034] Figure 3 A structural schematic diagram of the gearbox cooling device for a new energy commercial vehicle provided by an embodiment of the present specification is shown in the figure;

[0035] Figure 4 A structural schematic diagram of the gearbox cooling device for a new energy commercial vehicle provided by an embodiment of the present specification is shown in the figure.

[0036] Explanation of reference signs:

[0037] Heat management assembly 1; electric motor 2; transmission heat exchanger 3; transmission 4; control valve 5; three-way valve 6; liquid inlet pipeline 11; return pipeline 12; electronic four-way valve 7. DETAILED DESCRIPTION

[0038] For the purpose, technical solutions and advantages of the present application, the technical solutions of the present application will be described in detail below in combination with the embodiments of the present application and corresponding drawings. Obviously, the described embodiments are only some of the embodiments of the present application, not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of the present application.

[0039] In the description of the present application, it should be noted that the term "or" is generally used in the sense of including "and / or" unless the context clearly indicates otherwise.

[0040] In the description of the present application, it should be noted that unless otherwise explicitly specified and limited, the terms "mounting", "connecting", "connecting" should be understood in a broad sense. In addition, in the description of the present application, the terms "first", "second", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0041] Obviously, the described embodiments are only some of the embodiments of the present application, not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of the present application.

[0042] The technical solutions provided by the embodiments of the present application will be described in detail below in combination with the drawings.

[0043] Figure 1 The structure diagram of the transmission 4 cooling device applied to the new energy commercial vehicle provided by an embodiment of the present application is shown in FIG. 1. As shown in the figure, the transmission 4 cooling device includes a heat management assembly 1, an electric motor 2, a transmission heat exchanger 3, a transmission 4, a control valve 5 and a three-way valve 6. Figure 1

[0044] Preferably, the heat management assembly 1 is connected with the electric motor 2 through the liquid inlet pipeline 11 and the return pipeline 12 respectively, for delivering the cooling liquid to the electric motor 2 through the liquid inlet pipeline 11.

[0045] Preferably, after completing the cooling of the electric motor 2, the cooling liquid can be moved along the return pipeline 12 towards the heat management assembly 1 under the subsequent pushing of the cooling liquid.

[0046] ​Preferably, the control valve 5 and the three-way valve 6 are arranged in the middle section of the return line 12, and the control valve 5 is closer to the motor 2 than the three-way valve 6. Moreover, the control valve 5 and the three-way valve 6 are connected to the transmission heat exchanger 3 through parallel lines.

[0047] Preferably, the control valve 5 is provided with three ports, A, B and C. The three-way valve 6 is provided with three ports, D, E and F. The A port of the control valve 5 is connected to the motor 2 through the return line 12, the B port of the control valve 5 is connected to the D port of the three-way valve 6 through the return line 12, and the C port of the control valve 5 is connected to the transmission heat exchanger 3 through a parallel line. The E port of the three-way valve 6 is connected to the transmission heat exchanger 3 through a parallel line, and the F port of the three-way valve 6 is directly or indirectly connected to the thermal management assembly 1. That is, the coolant flowing out of the F port of the three-way valve 6 can flow directly to the thermal management assembly 1, or flow to the thermal management assembly 1 after flowing through other components of the new energy commercial vehicle.

[0048] Figure 2 The structure diagram of the transmission 4 cooling device applied to the new energy commercial vehicle provided by an embodiment of the present application is shown in Figure 2 The A port of the control valve 5 is connected to the motor 2 through the return line 12, the B port of the control valve 5 is connected to the D port of the three-way valve 6 through the return line 12, and the C port of the control valve 5 is connected to the transmission heat exchanger 3 through a parallel line. The E port of the three-way valve 6 is connected to the transmission heat exchanger 3 through a parallel line, and the F port of the three-way valve 6 is directly or indirectly connected to the thermal management assembly 1.

[0049] Preferably, the control valve 5 can receive instructions to adjust the flow of coolant flowing to the transmission heat exchanger 3.

[0050] Further preferably, the control valve 5 can adjust the opening degree of any one of the ports in response to the user's operation, so as to adjust the flow of coolant flowing in or out through the port.

[0051] Preferably, the transmission heat exchanger 3 is arranged inside the transmission 4 and in contact with the lubricating oil in the transmission 4.

[0052] Preferably, the transmission heat exchanger 3 is used to cool the lubricating oil through the coolant flowing through the inside of the transmission heat exchanger 3.

[0053] According to the above embodiment, the gearbox 4 cooling device applied to the new energy commercial vehicle comprises a thermal management assembly 1, an electric motor 2, a gearbox heat exchanger 3, a gearbox 4, a control valve 5 and a three-way valve 6. The thermal management assembly 1 is connected with the electric motor 2 through a liquid inlet pipeline 11 and a return pipeline 12 respectively, and is used for delivering cooling liquid to the electric motor 2 through the liquid inlet pipeline 11. The control valve 5 and the three-way valve 6 are arranged at a middle section of the return pipeline 12, and the control valve 5 is closer to the electric motor 2 than the three-way valve 6. The control valve 5 and the three-way valve 6 are connected with the gearbox heat exchanger 3 through a parallel pipeline, and the control valve 5 can receive an instruction to adjust the flow of the cooling liquid flowing to the gearbox heat exchanger 3. The gearbox heat exchanger 3 is arranged in the gearbox 4 and is in contact with lubricating oil in the gearbox 4, and is used for cooling the lubricating oil by the cooling liquid flowing through the inside of the gearbox heat exchanger 3.

[0054] According to the above, the cooling liquid flowing through the electric motor 2 can be adjusted by the control valve 5 to flow through the gearbox heat exchanger 3 arranged in the gearbox 4 before returning to the thermal management assembly 1, so as to cool the lubricating oil in the gearbox 4, thereby realizing the reuse of the cooling liquid flowing through the electric motor 2.

[0055] Preferably, the electric motor 2 is a water-cooled motor, and the cooling liquid is water.

[0056] Preferably, the gearbox heat exchanger 3 is a plate heat exchanger, a copper pipe heat exchanger or a fin heat exchanger, and the present specification does not limit this.

[0057] Preferably, the new energy commercial vehicle is provided with a vehicle control center, and the vehicle control center is in communication connection with the control valve 5, and is used for sending an instruction to the control valve 5 to indicate the control valve 5 to adjust the flow of the cooling liquid flowing to the gearbox heat exchanger 3.

[0058] The above is a gearbox 4 cooling device applied to a new energy commercial vehicle provided by the present specification, based on similar inventive concepts, the present specification also provides a gearbox 4 cooling device applied to a new energy commercial vehicle.

[0059] Figure 3 The structure schematic diagram of the gearbox 4 cooling device applied to the new energy commercial vehicle provided by an embodiment of the present specification is shown in Figure 3 The gearbox 4 cooling device applied to the new energy commercial vehicle comprises a thermal management assembly 1, an electric motor 2, a gearbox heat exchanger 3, a gearbox 4 and an electronic four-way valve 7.

[0060] Preferably, the thermal management assembly 1 is connected with the electric motor 2 through a liquid inlet pipeline 11 and a return pipeline 12 respectively, and is used for delivering cooling liquid to the electric motor 2 through the liquid inlet pipeline 11.

[0061] Preferably, after the cooling liquid completes the cooling of the motor 2, the cooling liquid can be pushed by the subsequent cooling liquid to move along the return pipeline 12 towards the thermal management assembly 1.

[0062] Preferably, the electronic four-way valve 7 is arranged in the middle of the return pipeline 12 through the G end and the H end, and the electronic four-way valve 7 is also connected with the transmission heat exchanger 3 through the I end, the J end and the parallel pipeline.

[0063] Preferably, inside the electronic four-way valve 7, the G end is communicated with the H end and the I end respectively, and the flow of the cooling liquid flowing to the H end and the I end can be adjusted.

[0064] Further preferably, the H end is also communicated with the J end, so that the cooling liquid flowing through the transmission heat exchanger 3 can flow from the H end to the J end, and then flow to the thermal management assembly 1 through the return pipeline 12 after flowing back to the H end.

[0065] Figure 4 The structure diagram of the transmission 4 cooling device applied to the new energy commercial vehicle provided by an embodiment of the present application is shown in FIG. 1. Figure 4 As shown in FIG. 1, the electronic four-way valve 7 is arranged in the middle of the return pipeline 12 through the G end and the H end, and the electronic four-way valve 7 is also connected with the transmission heat exchanger 3 through the I end, the J end and the parallel pipeline.

[0066] Preferably, the electronic four-way valve 7 can receive instructions to adjust the flow of the cooling liquid flowing to the transmission heat exchanger 3.

[0067] Further preferably, the electronic four-way valve 7 can adjust the opening degree of any one of the ports in response to the operation of the user, so as to adjust the flow of the cooling liquid flowing in or out through the port.

[0068] Preferably, the transmission heat exchanger 3 is arranged inside the transmission 4 and is in contact with the lubricating oil in the transmission 4.

[0069] Preferably, the transmission heat exchanger 3 is used to cool the lubricating oil by the cooling liquid flowing through the inside of the transmission heat exchanger 3.

[0070] According to the above, the device can adjust the electronic four-way valve 7 to make the cooling liquid flowing through the motor 2 flow through the transmission heat exchanger 3 arranged inside the transmission 4 before flowing back to the thermal management assembly 1, so as to cool the lubricating oil in the transmission 4, thereby realizing the reuse of the cooling liquid flowing through the motor 2.

[0071] Preferably, the motor 2 is a water-cooled motor, and the cooling liquid is water.

[0072] Preferably, the gearbox heat exchanger 3 is a plate heat exchanger, a copper tube heat exchanger or a fin heat exchanger, etc., which is not limited in the specification.

[0073] Preferably, the new energy commercial vehicle is provided with a vehicle control center, and the vehicle control center is in communication connection with the electronic four-way valve 7, for sending instructions to the electronic four-way valve 7, instructing the control valve 5 to adjust the flow of the cooling liquid flowing to the gearbox heat exchanger 3.

[0074] The above is the gearbox cooling device for the new energy commercial vehicle provided by one or more embodiments of the specification, based on the same inventive concept, the specification also provides a new energy commercial vehicle.

[0075] Preferably, the new energy commercial vehicle includes the gearbox cooling device for the new energy commercial vehicle provided by any one of the above embodiments.

[0076] It should be further noted that the terms "comprising", "containing" or any other variant thereof are intended to cover non-exclusive inclusion, so that processes, methods, articles or devices including a series of elements not only include those elements, but also include other elements not explicitly listed, or include elements inherent to such processes, methods, articles or devices. Without more limitations, the element defined by the statement "comprising a" does not exclude the presence of additional identical elements in the process, method, article or device including the element.

[0077] Each of the embodiments in the specification is described in a progressive manner, and the same or similar parts between the embodiments can be referred to each other, and each embodiment focuses on the difference from other embodiments. In particular, for the system embodiment, since it is basically similar to the method embodiment, the description is relatively simple, and the relevant parts can be referred to the part of the method embodiment.

[0078] The above is only an embodiment of the specification and does not limit the specification. Those skilled in the art can make various changes and modifications to the specification. Any modification, equivalent replacement, improvement, etc. within the spirit and principle of the specification shall be included in the scope of the claims of the application.

Claims

1. A gearbox cooling device applied to a new energy commercial vehicle, characterized in that, The heat management assembly, the motor, the gearbox heat exchanger, the gearbox, the control valve and the three-way valve are provided. The heat management assembly is connected with the motor through the liquid inlet pipeline and the return pipeline, and is used for delivering the cooling liquid to the motor through the liquid inlet pipeline. The control valve and the three-way valve are arranged on a middle section of the return pipeline, and the control valve is closer to the motor than the three-way valve. The control valve and the three-way valve are connected with the gearbox heat exchanger through the parallel pipeline.

2. The gearbox cooling arrangement of claim 1, wherein, The gearbox heat exchanger is arranged in the gearbox and contacts with the lubricating oil in the gearbox. The motor is a water-cooled motor.

3. The gearbox cooling arrangement of claim 1, wherein, The cooling liquid is water.

4. The gearbox cooling arrangement of claim 1, wherein, The gearbox heat exchanger is a plate heat exchanger, a copper tube heat exchanger or a fin heat exchanger. The new energy commercial vehicle is provided with a vehicle control center.

5. A gearbox cooling device applied to a new energy commercial vehicle, characterized in that, The vehicle control center is in communication connection with the control valve, and is used for sending an instruction to the control valve to indicate the control valve to adjust the flow of the cooling liquid flowing to the gearbox heat exchanger. The heat management assembly, the motor, the gearbox heat exchanger, the gearbox and the electronic four-way valve are provided. The heat management assembly is connected with the motor through the liquid inlet pipeline and the return pipeline, and is used for delivering the cooling liquid to the motor through the liquid inlet pipeline. The electronic four-way valve is arranged on a middle section of the return pipeline through the G end and the H end, and is connected with the gearbox heat exchanger through the I end, the J end and the parallel pipeline.

6. A gearbox cooling arrangement according to claim 5, characterised in that, The electronic four-way valve can receive an instruction to adjust the flow of the cooling liquid flowing to the gearbox heat exchanger. The gearbox heat exchanger is arranged in the gearbox and contacts with the lubricating oil in the gearbox.

7. The gearbox cooling arrangement of claim 5, wherein, The motor is a water-cooled motor.

8. The gearbox cooling arrangement of claim 5, wherein, The cooling liquid is water. The gearbox heat exchanger is a plate heat exchanger, a copper tube heat exchanger or a fin heat exchanger.

9. The gearbox cooling arrangement of claim 5, wherein, In the electronic four-way valve, the G end is in communication with the H end and the I end, and can adjust the flow of the cooling liquid flowing to the H end and the I end. The H end is in communication with the J end.

10. A new energy commercial vehicle, characterized in that, The new energy commercial vehicle is provided with a vehicle control center. The vehicle control center is in communication connection with the electronic four-way valve, and is used for sending an instruction to the electronic four-way valve to indicate the electronic four-way valve to adjust the flow of the cooling liquid flowing to the gearbox heat exchanger. The new energy commercial vehicle comprises the gearbox cooling device applied to the new energy commercial vehicle according to any one of claims 1-9.

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