Cooling circulation device and vehicle

Abstract

The utility model discloses a cooling circulation device and a vehicle. The cooling circulation device is used for cooling the reducer gear. The reducer gear is located in the first oil pool. Cooling liquid is contained in the first oil pool and the second oil pool. And the first oil pool is communicated with the second oil pool through a communicating hole. The circulating oil way is connected with the second oil pool. Cooling liquid is conveyed to the cooling speed reducer gear through the circulating oil way and then flows back to the first oil pool. The regulation and control part is used for pressurizing the first oil pool or reducing the pressure in the second oil pool, so that the liquid level in the first oil pool is lower than the liquid level in the second oil pool. The circulating oil way is arranged to cool and lubricate the speed reducer gear, the regulating part is arranged to form pressure difference between the first oil pool and the second oil pool, so that the liquid level of the first oil pool is lower than that of the second oil pool, the liquid level in the first oil pool is reduced, the speed reducer gear is prevented from being immersed in cooling liquid in the first oil pool, and the service life of the speed reducer gear is prolonged. And the speed reducer gear can work more efficiently.

Description

Technical Field

[0001] The present application relates to the field of vehicle technology, and in particular to a cooling circulation device and a vehicle. Background Art

[0002] The lubrication and heat dissipation of the coolant play a vital role in the operation of the reducer gear. The coolant cooling method currently used is to spray the coolant on the reducer gear while the reducer gear is running at high speed to lubricate and dissipate the heat of the reducer gear. In this coolant cooling method, as the amount of coolant used increases, the depth of the reducer gear immersed in the coolant gradually increases, causing the coolant to splash when the reducer gear rotates, increasing additional power consumption and reducing the efficiency of the reducer. Utility Model Content

[0003] The present application provides a cooling circulation device and a vehicle to solve the technical problem of reduced working efficiency when heat dissipation is required for reducer gears.

[0004] In order to solve the above technical problems, the present application proposes a cooling circulation device for cooling a reducer gear, comprising: a first oil pool, in which the reducer gear is located; a second oil pool, in which the first oil pool and the second oil pool contain coolant, and the first oil pool is connected to the second oil pool through a connecting hole; a circulating oil circuit, in which the circulating oil circuit is connected to the second oil pool, and the coolant is transported to the cooling reducer gear through the circulating oil circuit and then flows back to the first oil pool; an adjusting control unit, which is used to pressurize the first oil pool or depressurize the second oil pool so that the liquid level in the first oil pool is lower than the liquid level in the second oil pool.

[0005] Among them, the circulating oil circuit includes an oil delivery pipeline connected to the second oil pool, the adjustment control unit is an oil pump, the oil pump has a suction port and a liquid outlet, the suction port is connected to the second oil pool, the liquid outlet is connected to the oil delivery pipeline, and the outlet of the oil delivery pipeline faces the reducer gear; the orthographic projection of the connecting hole toward the suction port is located inside the suction port.

[0006] The control unit further comprises an oil suction pipeline, one end of which is connected to the liquid suction port, and the other end of which is spaced and aligned with the connecting hole.

[0007] Wherein, the oil suction pipeline is coaxially arranged with the connecting hole.

[0008] Wherein, the control unit is an air pump, and the air pump includes an air pump port; the air pump port is connected to the first oil pool and blows air into the first oil pool; or, the air pump port is connected to the second oil pool and sucks air from the second oil pool.

[0009] The control unit is two air pumps, each of which includes an air pump port; one of the air pump ports is connected to the first oil pool and blows air into the first oil pool; the other air pump port is connected to the second oil pool and inhales air from the second oil pool.

[0010] It includes a pool body and a partition arranged in the pool body, the partition divides the pool body into a first oil pool and a second oil pool, and a connecting hole is arranged on the partition; along the direction of gravity, the height from the center of the connecting hole to the bottom of the pool body is less than the height of the lowest point of the reducer gear.

[0011] To solve the above technical problems, another aspect of the present application proposes a vehicle; the vehicle includes a reducer; the vehicle includes a cooling circulation device in any one of the above embodiments; the reducer includes a reducer gear, and along the direction of gravity, the reducer gear is located above the first oil pool, and after the coolant cools the reducer gear, it flows back to the first oil pool under the action of gravity.

[0012] The vehicle further includes a motor connected to the reducer; along the direction of gravity, the motor is located above the second oil pool, and the coolant cools the motor and then flows back to the second oil pool.

[0013] Among them, the oil supply pipeline includes a first oil supply pipeline and a second oil supply pipeline; wherein the inlet ends of the first oil supply pipeline and the second oil supply pipeline are both connected to the second oil pool; the outlet end of the first oil supply pipeline faces the motor, and the coolant in the first oil supply pipeline flows out to cool the motor and then returns to the second oil pool; the outlet end of the second oil supply pipeline faces the reducer gear, and the coolant in the second oil supply pipeline flows out to cool the reducer gear and then returns to the first oil pool.

[0014] The beneficial effect of the present application is as follows: Different from the prior art, the present application provides a cooling circulation device. The cooling circulation device is used to cool the reducer gear. The cooling circulation device includes a first oil pool, a second oil pool, a circulating oil circuit and an adjustment control. The reducer gear is located in the first oil pool. The first oil pool and the second oil pool contain coolant. The first oil pool is connected to the second oil pool through a connecting hole. The circulating oil circuit is connected to the second oil pool. The coolant is transported to the cooling reducer gear through the circulating oil circuit and then flows back to the first oil pool. The adjustment control is used to pressurize the first oil pool or depressurize the second oil pool so that the liquid level in the first oil pool is lower than the liquid level in the second oil pool. The present application sets up a circulating oil circuit to cool and lubricate the reducer gears, and sets an adjustment control unit to increase the pressure of the first oil pool or reduce the pressure of the second oil pool, so that a pressure difference is formed between the first oil pool and the second oil pool, and the coolant in the first oil pool flows into the second oil pool through the connecting hole, the coolant in the first oil pool decreases, and the coolant in the second oil pool increases, so that the liquid level height of the first oil pool is lower than the liquid level height of the second oil pool, thereby lowering the liquid level height in the first oil pool, and further preventing the reducer gears from being immersed in the coolant in the first oil pool, thereby reducing the resistance and energy loss of the reducer gears during operation, so that the reducer gears can work more efficiently. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments are briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative work, among which:

[0016] Figure 1 It is a structural schematic diagram of the first embodiment of the cooling cycle device of the present application;

[0017] Figure 2 It is a structural schematic diagram of an embodiment of the cooling circulation device of the present application without the reducer gear and the circulating oil circuit;

[0018] Figure 3 yes Figure 2 A top view schematic diagram of

[0019] Figure 4 It is a schematic structural diagram of the second embodiment of the cooling circulation device of the present application.

[0020] Figure numbers: 1000, cooling circulation device; 10, pool body; 100, first oil pool; 200, second oil pool; 300, circulating oil circuit; 310, oil delivery pipeline; 301, first oil delivery pipeline; 302, second oil delivery pipeline; 400, adjustment control unit; 401, liquid suction port; 402, liquid outlet; 410, oil suction pipeline; 500, partition; 501, connecting hole; 600, reducer gear. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0022] Reference to "embodiments" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present application. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0023] The cooling circulation device and the vehicle provided by the utility model are described in detail below in conjunction with the embodiments.

[0024] See also Figure 1 , Figure 11 is a schematic diagram of the structure of an embodiment of a cooling circulation device of the present application. The present application provides a cooling circulation device 1000. The cooling circulation device 1000 is used to cool a reducer gear 600. The cooling circulation device 1000 includes a first oil pool 100, a second oil pool 200, a circulating oil circuit 300 and a control unit 400. The first oil pool 100 and the second oil pool 200 contain a coolant. The coolant has the function of cooling or lubricating the reducer gear 600.

[0025] The first oil pool 100 is connected to the second oil pool 200 through a connecting hole 501. The coolant in the first oil pool 100 flows into the second oil pool 200 through the connecting hole 501. The coolant in the second oil pool 200 flows into the second oil pool 200 through the connecting hole 501.

[0026] The circulating oil circuit 300 is a path for the circulation of the coolant. The circulating oil circuit 300 is connected to the second oil pool 200. The coolant is transported to the cooling reducer gear 600 through the circulating oil circuit 300 and then flows back to the first oil pool 100. The coolant in the second oil pool 200 is transported to the reducer gear 600 through the circulating oil circuit 300. After the coolant cools the reducer gear 600, the coolant flows into the first oil pool 100. The coolant is transported to the cooling reducer gear 600 through the circulating oil circuit 300 and then flows back to the first oil pool 100 or the second oil pool 200. The coolant in the second oil pool 200 is transported to the reducer gear 600 through the circulating oil circuit 300. After the coolant cools the reducer gear 600, the coolant flows into the first oil pool 100. The coolant in the first oil pool 100 then flows into the second oil pool 200 through the connecting hole 501, so that the coolant cools the reducer gear 600 and then flows back to the first oil pool 100 or the second oil pool 200.

[0027] In the direction of gravity, the reducer gear 600 is located above the first oil pool 100. That is to say, when there is a lot of coolant in the first oil pool 100, part of the reducer gear 600, especially the lower part of the reducer gear 600, is very likely to be immersed in the coolant in the first oil pool 100. And when the reducer gear 600 is a gear or similar component, the deeper the reducer gear 600 is immersed in the coolant in the first oil pool 100, the greater the resistance during operation, thereby the greater the power loss and the lower the efficiency.

[0028] In order to prevent the reducer gear 600 from being immersed in the coolant in the first oil pool 100. The control unit 400 of the present application is used to adjust and control the flow and pressure of the coolant. The control unit 400 is used to increase the pressure of the first oil pool 100 or reduce the pressure in the second oil pool 200, so that the liquid level in the first oil pool 100 is lower than the liquid level in the second oil pool 200. The control unit 400 injects pressure into the first oil pool 100, the pressure in the first oil pool 100 increases, the pressure in the first oil pool 100 is greater than the pressure in the second oil pool 200, and the pressure pushes the coolant in the first oil pool 100 to flow into the second oil pool 200 through the connecting hole 501. Or the control unit 400 extracts the pressure in the second oil pool 200, the pressure in the second oil pool 200 decreases, the pressure in the second oil pool 200 is less than the pressure in the first oil pool 100, and the coolant in the first oil pool 100 flows into the second oil pool 200 through the connecting hole 501.

[0029] The control unit 400 increases the pressure of the coolant in the first oil pool 100 or reduces the pressure of the coolant in the second oil pool 200, thereby forming a pressure difference between the first oil pool 100 and the second oil pool 200. The pressure in the first oil pool 100 is greater than the pressure in the second oil pool 200. The coolant in the first oil pool 100 flows into the second oil pool 200 through the connecting hole 501. The coolant in the first oil pool 100 decreases, and the coolant in the second oil pool 200 increases, thereby making the liquid level in the second oil pool 200 lower than the liquid level in the first oil pool 100.

[0030] The types of pressures of the first oil pool 100 and the second oil pool 200 regulated by the control unit 400 include but are not limited to air pressure, water pressure, and the like.

[0031] Through the above method, a circulating oil circuit 300 is set to cool and lubricate the reducer gear 600, and an adjustment control unit 400 is set to increase the pressure of the first oil pool 100 or reduce the pressure of the second oil pool 200, so that a pressure difference is formed between the first oil pool 100 and the second oil pool 200, and the coolant in the first oil pool 100 flows into the second oil pool 200 through the connecting hole 501, the coolant in the first oil pool 100 is reduced, and the coolant in the second oil pool 200 is increased, so that the liquid level in the first oil pool 100 is lower than the liquid level in the second oil pool 200, the liquid level in the first oil pool 100 is reduced, and the reducer gear 600 is further prevented from being immersed in the coolant in the first oil pool 100, thereby reducing the resistance and energy loss of the reducer gear 600 during operation, so that the reducer gear 600 can work more efficiently.

[0032] The setting mode of the adjustment control 400 can be set according to actual conditions and is not limited here. For example, in one specific embodiment, the adjustment control 400 is set in the second oil pool 200. For example, in another specific embodiment, the adjustment control 400 is set outside the first oil pool 100 and the second oil pool 200. For example, in another specific embodiment, the adjustment control 400 is set in the first oil pool 100.

[0033] In one embodiment, the circulating oil circuit 300 includes an oil delivery pipeline 310 connected to the second oil pool 200. The control unit 400 is an oil pump (not shown). The oil pump is used to draw coolant from the second oil pool 200, thereby reducing the pressure in the second oil pool 200 and forming a pressure difference between the first oil pool 100 and the second oil pool 200. In addition, the oil pump is also conducive to the coolant being discharged from the second oil pool 200 into the circulating oil circuit 300, and then discharged through the circulating oil circuit 300 to cool the reducer gear 600 and then flow back to the first oil pool 100. Specifically, the oil pump has a liquid suction port 401 and a liquid outlet 402. The liquid suction port 401 is connected to the second oil pool 200 to suck the coolant from the second oil pool 200 and reduce the pressure in the second oil pool 200, thereby forcing the coolant in the first oil pool 100 to quickly flow into the second oil pool 200 through the connecting hole 501, and forming a height difference between the liquid level in the first oil pool 100 and the liquid level in the second oil pool 200. The liquid outlet 402 is connected to the oil delivery pipeline 310, and the outlet of the oil delivery pipeline 310 faces the reducer gear 600. The coolant in the oil delivery pipeline 310 cools the reducer gear 600.

[0034] The orthographic projection of the connecting hole 501 toward the liquid suction port 401 is located inside the liquid suction port 401. That is, the distance when the coolant flows into the liquid suction port 401 through the connecting hole 501 is the shortest. The path of the coolant flowing from the connecting hole 501 into the liquid suction port 401 is a straight line. At this time, when the oil pump is working, the coolant in the second oil pool 200 is discharged into the circulating oil circuit 300 through the liquid suction port 401, and the coolant in the first oil pool 100 quickly flows to the second oil pool 200 through the connecting hole 501 and is discharged into the circulating oil circuit 300 through the liquid suction port 401.

[0035] By controlling the aperture size of the liquid suction port 401 and the connecting hole 501, the flow rate and flow rate of the coolant can be controlled. The aperture size of the liquid suction port 401 and the connecting hole 501 can be set according to actual conditions and is not limited here. The larger the aperture of the connecting hole 501, the faster the coolant in the first oil pool 100 flows into the second oil pool 200 through the connecting hole 501, and the more coolant flow rate is sucked by the liquid suction port 401.

[0036] The oil pump is running, and the coolant flows into the oil delivery pipeline 310 from the liquid outlet 402 of the oil pump. The oil delivery pipeline 310 delivers the coolant to the reducer gear 600. The coolant is sprayed from the outlet of the oil delivery pipeline 310 to the reducer gear 600. The coolant cools the reducer gear 600 and then flows into the first oil pool 100. The oil pump decompresses the second oil pool 200, and a pressure difference is formed between the first oil pool 100 and the second oil pool 200, so that the coolant in the first oil pool 100 flows into the suction port 401 of the oil pump through the connecting hole 501, so that the liquid level in the first oil pool 100 is lower than the liquid level in the second oil pool 200.

[0037] In the above manner, the liquid outlet 402 of the oil pump is connected to the oil delivery pipeline 310 to cool and lubricate the reducer gear 600; the oil pump forms a pressure difference between the first oil pool 100 and the second oil pool 200, and the suction port 401 of the oil pump absorbs the coolant in the first oil pool 100 through the connecting hole 501, so that the liquid level in the first oil pool 100 is lower than the liquid level in the second oil pool 200, thereby reducing the liquid level in the first oil pool 100 and further preventing the reducer gear 600 from being immersed in the coolant in the first oil pool 100. The connecting hole 501 is arranged such that the positive projection of the suction port 401 is located in the suction port 401, which can reduce the flow resistance of the coolant and improve the flow efficiency and stability of the coolant. The reliability of the cooling circulation device 1000 is further improved and the cost of the cooling circulation device 1000 is reduced.

[0038] The way in which the suction port 401 sucks the cooling liquid can be set according to actual conditions and is not limited here. For example, in one specific embodiment, the suction port 401 forms a negative pressure to suck the cooling liquid. For example, in another specific embodiment, the suction port 401 forms a vacuum to suck the cooling liquid.

[0039] The connection mode between the connecting hole 501 and the liquid suction port 401 can be set according to actual conditions and is not limited here. For example, in one specific embodiment, the connecting hole 501 is directly connected to the liquid suction port 401, and the coolant in the first oil pool 100 flows directly into the liquid suction port 401 through the connecting hole 501. In another specific embodiment, the connecting hole 501 and the liquid suction port 401 are arranged at intervals, and the coolant in the first oil pool 100 can flow into the second oil pool 200 through the connecting hole 501, and then flow into the liquid suction port 401.

[0040] In another embodiment, the flow rate of the coolant in the oil delivery pipeline 310 remains unchanged, and the flow rate of the coolant in the first oil pool 100 sucked by the liquid suction port 401 is different from the flow rate of the coolant in the second oil pool 200, so that the liquid level in the first oil pool 100 can be different from the liquid level in the second oil pool 200. For example, the flow rate of the coolant in the first oil pool 100 sucked by the liquid suction port 401 is greater than the flow rate of the coolant in the second oil pool 200, so that the liquid level in the first oil pool 100 can be lower than the liquid level in the second oil pool 200.

[0041] In one embodiment, the control unit 400 further includes an oil suction pipeline 410. One end of the oil suction pipeline 410 is connected to the liquid suction port 401. The other end of the oil suction pipeline 410 is spaced apart from and aligned with the communication hole 501.

[0042] The oil suction line 410 and the connecting hole 501 are arranged at intervals, so that the oil suction line 410 can simultaneously absorb the coolant in the first oil pool 100 and the coolant in the second oil pool 200. At the same time, the oil suction line 410 and the connecting hole 501 are arranged in alignment, so that the distance between the oil suction line 410 and the connecting hole 501 is the shortest, and the oil suction line 410 and the connecting hole 501 can be accurately aligned, thereby improving the flow efficiency and stability of the coolant, and simplifying the structure of the cooling circulation device 1000.

[0043] When the oil pump is working, the coolant in the first oil pool 100 flows into the oil suction pipe 410 through the connecting hole 501, the coolant in the second oil pool 200 flows directly into the oil suction pipe 410, and the coolant in the oil suction pipe 410 flows into the suction port 401, so that the oil suction pipe 410 can absorb the coolant in the first oil pool 100 and the coolant in the second oil pool 200 at the same time.

[0044] like Figure 1 As shown, there is a spacing b between the oil suction line 410 and the connecting hole 501. The flow rate and flow velocity of the coolant absorbed by the oil suction line 410 can be determined by adjusting the aperture of the oil suction line 410, the aperture of the connecting hole 501 and the size of the spacing b. For example, the aperture of the oil suction line 410 is fixed, the size of the spacing b is fixed, the larger the aperture of the connecting hole 501, the greater the flow rate and flow of the coolant absorbed by the oil suction line 410; the smaller the aperture of the connecting hole 501, the smaller the flow rate and flow of the coolant absorbed by the oil suction line 410.

[0045] In one embodiment, the oil suction line 410 is coaxially arranged with the connecting hole 501. That is, the distance for the coolant to flow into the oil suction line 410 through the connecting hole 501 is the shortest. The path for the coolant to flow from the oil suction line 410 into the connecting hole 501 is a straight line. This arrangement can reduce the flow resistance of the coolant, improve the flow efficiency and flow stability of the coolant, further improve the reliability of the cooling cycle device 1000, and reduce the cost of the cooling cycle device 1000.

[0046] In one embodiment, the control unit 400 is an air pump (not shown). The air pump includes an air pump port. The air pump port is connected to the first oil pool 100. When the air pump is running, the air pump port blows air into the first oil pool 100, and the air pressure in the first oil pool 100 increases. The air pressure in the first oil pool 100 is greater than the air pressure in the second oil pool 200, and the air pressure pushes the coolant in the first oil pool 100 to flow into the second oil pool 200 through the connecting hole 501.

[0047] In another embodiment, the air pump port is configured to communicate with the second oil pool 200. When the air pump is running, the air pump port sucks air from the second oil pool 200, the air pressure in the second oil pool 200 decreases, the air pressure in the second oil pool 200 is lower than the air pressure in the first oil pool 100, and the coolant in the first oil pool 100 flows into the second oil pool 200 through the communication hole 501.

[0048] By setting an air pump, the air pump port blows air into the first oil pool 100 or the air pump port sucks air from the second oil pool 200, so that a pressure difference can be formed between the first oil pool 100 and the second oil pool 200, and the coolant in the first oil pool 100 flows into the second oil pool 200 through the connecting hole 501, the coolant in the first oil pool 100 decreases, and the coolant in the second oil pool 200 increases, so that the liquid level in the second oil pool 200 is lower than the liquid level in the first oil pool 100, thereby lowering the liquid level in the first oil pool 100, and further preventing the reducer gear 600 from being immersed in the coolant in the first oil pool 100, thereby reducing the resistance and energy loss of the reducer gear 600 during operation, so that the reducer gear 600 can work more efficiently.

[0049] The arrangement of the air pump can be arranged according to actual conditions and is not limited here. For example, in one specific embodiment, the air pump is arranged in the second oil pool 200. For example, in another specific embodiment, the air pump is arranged outside the first oil pool 100 and the second oil pool 200. For example, in another specific embodiment, the air pump is arranged in the first oil pool 100.

[0050] It is understandable that in another embodiment, the control unit 400 may be two air pumps. The two air pumps are respectively a first air pump and a second air pump. The first air pump and the second air pump include an air pump port.

[0051] The air pump port of the first air pump is connected to the first oil pool 100. When the first air pump is running, the air pump port of the first air pump blows air into the first oil pool 100, and the air pressure in the first oil pool 100 increases. The air pressure in the first oil pool 100 is greater than the air pressure in the second oil pool 200, and the air pressure pushes the coolant in the first oil pool 100 to flow into the second oil pool 200 through the connecting hole 501.

[0052] The air pump port of the second air pump is connected to the second oil pool 200. When the second air pump is running, the air pump port of the second air pump sucks air from the second oil pool 200, the air pressure in the second oil pool 200 decreases, and the air pressure in the second oil pool 200 is lower than the air pressure in the first oil pool 100, and the coolant in the first oil pool 100 flows into the second oil pool 200 through the connecting hole 501.

[0053] By setting up two air pumps, the air pump port of the first air pump blows air into the first oil pool 100, and the air pump port of the second air pump sucks air from the second oil pool 200, thereby further enhancing the pressure difference between the first oil pool 100 and the second oil pool 200. The air pressure in the first oil pool 100 is greater than the air pressure in the second oil pool 200, and the coolant in the first oil pool 100 flows into the second oil pool 200 through the connecting hole 501. The coolant in the first oil pool 100 decreases, and the coolant in the second oil pool 200 increases, so that the liquid level in the first oil pool 100 is lower than the liquid level in the second oil pool 200, thereby lowering the liquid level in the first oil pool 100, and further avoiding the reducer gear 600 from being immersed in the coolant in the first oil pool 100, thereby reducing the resistance and energy loss of the reducer gear 600 during operation, so that the reducer gear 600 can work more efficiently.

[0054] The arrangement of the two air pumps can be arranged according to actual conditions and is not limited here. For example, in one specific embodiment, the first air pump is arranged in the first oil pool 100. For example, in another specific embodiment, the first air pump and the second air pump are both arranged outside the first oil pool 100 and the second oil pool 200. For example, in another specific embodiment, the second air pump is arranged in the second oil pool 200.

[0055] See also Figure 2 and Figure 3 , Figure 2 It is a structural schematic diagram of an embodiment of the cooling circulation device of the present application without the reducer gear and the circulating oil circuit; Figure 3 yes Figure 2 Schematic top view. In one embodiment, the tank body 10 and the partition 500 disposed in the tank body 10 are included. The partition 500 divides the tank body 10 into a first oil tank 100 and a second oil tank 200. A connecting hole 501 is disposed on the partition 500. The first oil tank 100 and the second oil tank 200 are connected through the connecting hole 501. The coolant in the first oil tank 100 flows into the second oil tank 200 through the connecting hole 501. The coolant in the second oil tank 200 flows into the second oil tank 200 through the connecting hole 501.

[0056] In the direction of gravity, the height from the center of the connecting hole 501 to the bottom of the pool body 10 is less than the height of the lowest point of the reducer gear 600. When the liquid level in the first oil pool 100 rises to the connecting hole 501, the coolant in the first oil pool 100 flows out from the connecting hole 501. This arrangement can reduce the possibility of the coolant overflowing from the first oil pool 100, and at the same time prevent the reducer gear 600 from being immersed in the coolant in the first oil pool 100, thereby improving the working efficiency of the reducer gear 600.

[0057] By setting a partition 500, the pool body 10 is divided into two to form a first oil pool 100 and a second oil pool 200. The first oil pool 100 and the second oil pool 200 are connected through a connecting hole 501, which can simplify the structure of the pool body 10, shorten the circulation distance of the coolant, and reduce the cost of the cooling circulation device 1000.

[0058] In another aspect of the present application, a vehicle is provided, wherein the vehicle includes a reducer, and the vehicle includes the cooling cycle device 1000 in any one of the above embodiments.

[0059] The reducer includes a reducer gear 600. The cooling circulation device 1000 is used to cool and lubricate the reducer gear 600. Along the gravity direction, the reducer gear 600 is located above the first oil pool 100. After the coolant cools the reducer gear 600, it flows back to the first oil pool 100 under the action of gravity.

[0060] In one embodiment, the vehicle further comprises a motor (not shown) connected to the reducer. Along the gravity direction, the motor is located above the second oil pool 200. The coolant cools the motor and then flows back to the second oil pool 200.

[0061] See also Figure 4 , Figure 4 1 is a schematic diagram of the structure of the second embodiment of the cooling cycle device of the present application. In one embodiment, the oil supply pipeline 310 includes a first oil supply pipeline 301 and a second oil supply pipeline 302. The inlet ends of the first oil supply pipeline 301 and the second oil supply pipeline 302 are both connected to the second oil pool 200. The outlet end of the first oil supply pipeline 301 faces the motor. The outlet end of the second oil supply pipeline 302 faces the reducer gear 600.

[0062] The coolant in the first oil supply pipeline 301 flows out to cool the motor and then returns to the second oil pool 200. The coolant in the second oil supply pipeline 302 flows out to cool the reducer gear 600 and then returns to the first oil pool 100. At this time, the oil pump runs to reduce the pressure of the second oil pool 200, so that a pressure difference is formed between the first oil pool 100 and the second oil pool 200. The coolant in the first oil pool 100 quickly flows into the second oil pool 200 through the connecting hole 501, and is discharged into the circulating oil circuit 300 through the suction port 401. At the same time, the coolant in the second oil pool 200 is also discharged into the circulating oil circuit 300 through the suction port 401. The oil in the circulating oil circuit 300 is divided into two, and flows into the first oil supply pipeline 301 and the second oil supply pipeline 302 respectively. As a result, the coolant forms a cycle to cool and lubricate the motor and the reducer gear 600.

[0063] The flow rate of the coolant required to cool the reducer gear 600 is smaller than the flow rate of the coolant required to cool the motor, so the flow rate of the coolant in the first oil supply pipeline 301 is smaller than the flow rate of the coolant in the second oil supply pipeline 302 .

[0064] With this arrangement, during the operation of the automobile, the coolant circulates to cool and lubricate the motor and the reducer gear 600, while preventing the reducer gear 600 from being immersed in the coolant in the first oil pool 100, reducing the resistance and energy loss in the working process of the reducer gear 600, thereby preventing the motor and the reducer gear 600 from overheating and causing the performance of the vehicle to deteriorate, reducing the wear of the motor and the reducer gear 600, extending the service life of the motor and the reducer gear 600, and helping to improve the overall performance and reliability of the vehicle.

[0065] Through the above method, the possibility of the reducer gear contacting with the liquid surface in the first oil pool 100 can be reduced, and the possibility of the motor contacting with the liquid surface in the second oil pool 200 can be reduced, thereby further reducing the resistance and capacity loss of the reducer gear and the motor during operation, improving the working efficiency of the reducer gear and the motor, and improving the stability of vehicle operation.

[0066] The terms "first", "second", "third" in this application are only used for descriptive purposes and cannot be understood as indicating the quantity of the indicated technical features. Thus, the features defined as "first", "second", "third" can expressly or implicitly include at least one of these features. In the embodiments of the present application, all directional indications (such as up, down, left, right, front, back ...) are only used to explain the relative positional relationship, motion conditions, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication also changes accordingly. In addition, the terms "include" and "have" and any of their variations are intended to cover non-exclusive inclusions. The process, method, system, product or equipment such as including a series of steps or units is not limited to the listed steps or units, but optionally also includes steps or units that are not listed, or optionally also includes other steps or units inherent to these processes, methods, products or equipment.

[0067] The above descriptions are merely embodiments of the present application and are not intended to limit the patent scope of the present application. Any equivalent structure or equivalent process transformation made using the contents of the present application specification and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present application.

Claims

1. A cooling circulation device for cooling a reducer gear, characterized in that: include: a first oil pool, wherein the reducer gear is located in the first oil pool; a second oil pool, wherein the first oil pool and the second oil pool contain coolant, and the first oil pool and the second oil pool are connected through a connecting hole; A circulating oil circuit, the circulating oil circuit being connected to the second oil pool, the coolant being transported through the circulating oil circuit to cool the reducer gear and then flowing back to the first oil pool; The control unit is used to increase the pressure in the first oil pool or reduce the pressure in the second oil pool so that the liquid level in the first oil pool is lower than the liquid level in the second oil pool.

2. The cooling cycle device according to claim 1, characterized in that: The circulating oil circuit includes an oil delivery pipeline connected to the second oil pool, the control unit is an oil pump, the oil pump has a liquid suction port and a liquid outlet, the liquid suction port is connected to the second oil pool, the liquid outlet is connected to the oil delivery pipeline, and the outlet of the oil delivery pipeline faces the reducer gear; The orthographic projection of the communicating hole toward the liquid suction port is located inside the liquid suction port.

3. The cooling cycle device according to claim 2, characterized in that: The control unit further includes an oil suction pipeline, one end of which is connected to the liquid suction port, and the other end of which is spaced apart from and aligned with the connecting hole.

4. The cooling cycle device according to claim 3, characterized in that: The oil suction pipeline is coaxially arranged with the communicating hole.

5. The cooling cycle device according to claim 1, characterized in that: The control unit is an air pump, and the air pump includes an air pump port; The air pump port is connected to the first oil pool and blows air into the first oil pool; Alternatively, the air pump port is communicated with the second oil pool and draws air from the second oil pool.

6. The cooling cycle device according to claim 1, characterized in that: The control components are two air pumps, each of which includes an air pump port; One of the air pump ports is connected to the first oil pool and blows air into the first oil pool; The other air pump port is connected to the second oil pool and draws air from the second oil pool.

7. The cooling cycle device according to claim 1, characterized in that: It comprises a tank body and a partition plate arranged in the tank body, the partition plate divides the tank body into a first oil tank and a second oil tank, and the communication hole is arranged on the partition plate; Along the gravity direction, the height from the center of the communicating hole to the bottom of the pool body is less than the height of the lowest point of the reducer gear.

8. A vehicle, comprising a reducer, characterized in that: The vehicle comprises the cooling cycle device according to any one of claims 1 to 7; The reducer comprises a reducer gear, and along the direction of gravity, the reducer gear is located above the first oil pool, and the coolant cools the reducer gear and then flows back to the first oil pool under the action of gravity.

9. The vehicle according to claim 8, characterized in that The vehicle further comprises a motor connected to the reducer; Along the direction of gravity, the motor is located above the second oil pool, and the coolant flows back to the second oil pool after cooling the motor.

10. The vehicle according to claim 9, characterized in that The oil delivery pipeline includes a first oil delivery pipeline and a second oil delivery pipeline; wherein, The inlet ends of the first oil delivery pipeline and the second oil delivery pipeline are both connected to the second oil pool; The outlet end of the first oil delivery pipeline faces the motor, and the coolant in the first oil delivery pipeline flows out to cool the motor and then returns to the second oil pool; The outlet end of the second oil supply pipeline faces the reducer gear, and the coolant in the second oil supply pipeline flows out to cool the reducer gear and then returns to the first oil pool.

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