Highly-integrated built-in cooling system, hybrid power box and vehicle

Abstract

The utility model relates to a highly-integrated built-in cooling system, a hybrid power box and a vehicle, and the cooling system comprises a shell which is internally provided with a generator cavity and a motor cavity; the motor controller is arranged at the top position of the shell, a first heat exchange channel is arranged in the motor controller, and the first heat exchange channel is used for allowing cooling water of the whole vehicle to enter and conducting cooling heat exchange on the motor controller; the oil cooler is arranged on the side face of the bottom of the shell, a second heat exchange channel is arranged in the oil cooler, and the second heat exchange channel is used for cooling the lubricating oil in the oil cooler and then enabling the lubricating oil to flow out; and the cooling water channel is arranged in the shell and is communicated with the first heat exchange channel and the second heat exchange channel. According to the cooling system, the pipeline arrangement is simple, the pipeline length is shortened, the design cost is reduced, and the cooling effect is further improved.

Description

Technical Field

[0001] The present application relates to the technical field of new energy vehicle design and manufacturing, and in particular to a highly integrated built-in cooling system, a hybrid power box and a vehicle. Background Art

[0002] With the increasing attention paid by the global automotive industry to energy conservation and environmental protection and the rapid development of new energy vehicle technology, hybrid vehicles have gradually become an important development direction of the automotive industry due to their fuel economy and emission reduction benefits. Among them, Dedicated Hybrid Transmission (DHT) technology, as an advanced hybrid solution, realizes efficient coordinated operation between the engine and the motor through a highly integrated power distribution system. Its multiple driving modes such as extended range, pure electric, and engine direct drive can be freely switched according to actual road conditions, showing the advantages of strong power, low fuel consumption and emissions. Therefore, it is widely favored by the market and its market share is also rising steadily. However, due to its complex working environment and high-intensity load characteristics, the cooling of the motor of the DHT gearbox is crucial. Effective cooling will improve the thermal efficiency and service life of the motor. If the cooling is improper, not only will the performance of the motor not be brought into play, but it will also cause the motor to fail.

[0003] At present, the water cooling of DHT gearboxes generally adopts external water pipes. In order to meet the boundary layout requirements of the whole vehicle, the length of the pipe will inevitably increase, and the pipe will become tortuous, resulting in increased pressure loss in the pipe, which seriously affects the cooling of the entire pipe, making the cooling efficiency of the cooling pipe poor, and reducing the heat exchanged through the oil cooler, resulting in poor cooling of the lubrication system, affecting the cooling of the motor, and also increasing the number of parts, resulting in increased costs.

[0004] Therefore, there is an urgent need to provide a highly integrated built-in cooling system, a hybrid power box and a vehicle to solve the above-mentioned technical problems. Utility Model Content

[0005] Based on this, a highly integrated built-in cooling system, a hybrid power box and a vehicle are provided. The cooling water channel of the cooling system is built into the shell and has a simple layout, which shortens the pipeline length, reduces the design cost, and also improves the cooling effect.

[0006] On the one hand, a highly integrated built-in cooling system is provided, comprising: a shell, in which a generator cavity and a motor cavity are arranged; a motor controller, which is arranged at the top position of the shell and has a first heat exchange channel arranged therein, the first heat exchange channel being used for supplying cooling water of the entire vehicle and cooling and exchanging heat with the motor controller; an oil cooler, which is arranged at the bottom side position of the shell and has a second heat exchange channel arranged therein, the second heat exchange channel being used for supplying cooling water to cool the lubricating oil in the oil cooler and then flowing out; a cooling water channel, which is built into the shell and connects the first heat exchange channel and the second heat exchange channel.

[0007] A preferred solution is that the cooling water channel includes a first cooling water channel and a second cooling water channel; the upper end of the first cooling water channel is connected to the outlet of the first heat exchange channel; the lower end of the first cooling water channel is connected to the upper end side of the second cooling water channel; and the lower end of the second cooling water channel is connected to the inlet of the second heat exchange channel.

[0008] A preferred solution is that the first cooling water channel is connected to the second cooling water channel at an angle.

[0009] A preferred solution is that a cooling water inlet pipe is provided on the motor controller; the cooling water inlet pipe is connected to the first heat exchange channel.

[0010] A preferred solution is that a cooling water outlet pipe is provided on the oil cooler; and the cooling water outlet pipe is connected to the second heat exchange channel.

[0011] A preferred solution is that the housing is formed by integral die-casting.

[0012] A preferred solution is that the generator cavity and the motor cavity are arranged adjacent to each other and are separated by a partition.

[0013] A preferred solution is that the cooling water channel is a built-in water channel formed by machining.

[0014] On the other hand, a hybrid power box is also provided, comprising the highly integrated built-in cooling system.

[0015] On the other hand, a vehicle is also provided, comprising the hybrid power box.

[0016] Beneficial effects:

[0017] The above-mentioned highly integrated built-in cooling system, hybrid power box and vehicle, by integrating the cooling water channel inside the shell, and the entire cooling water channel has simple pipelines, short pipelines, small pressure loss, high cooling efficiency, which can improve the performance and life of the motor to a limited extent; more importantly, since it is a built-in cooling water channel, the layout of the entire vehicle is completely unrestricted and the adaptability of the entire vehicle is high. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 is a schematic diagram of the structure of a highly integrated built-in cooling system in one embodiment;

[0019] Figure 2 A cross-sectional schematic diagram of a highly integrated built-in cooling system in one embodiment.

[0020] Figure numerals: 1. shell; 11. generator cavity; 12. motor cavity; 13. partition; 2. motor controller; 21. first heat exchange channel; 3. oil cooler; 31. second heat exchange channel; 4. cooling water channel; 41. first cooling water channel; 42. second cooling water channel; 5. cooling water inlet pipe; 6. cooling water outlet pipe. DETAILED DESCRIPTION

[0021] In order to make the purpose, technical solution and advantages of the present application more clearly understood, the present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0022] It should be noted that the illustrations provided in this embodiment only illustrate the basic concept of the present application in a schematic manner, and therefore the drawings only show components related to the present application rather than being drawn according to the number, shape and size of components in actual implementation. In actual implementation, the type, quantity and proportion of each component may be changed arbitrarily, and the component layout may also be more complicated.

[0023] The structures, proportions, sizes, etc. illustrated in the drawings of this specification are only used to match the contents disclosed in the specification so as to facilitate understanding and reading by persons familiar with this technology. They are not used to limit the conditions under which this application can be implemented, and therefore have no substantive technical significance. Any structural modification, change in proportion or adjustment of size, without affecting the effects and purposes that can be achieved by this application, should still fall within the scope of the technical contents disclosed in this application.

[0024] The directions or positional relationships indicated by the terms "upper", "lower", "left", "right", "middle", "longitudinal", "lateral", "horizontal", "inner", "outer", "radial", "circumferential" and the like in this specification are based on the directions or positional relationships shown in the drawings and are only for the convenience of simplifying the description. They do not indicate or imply that the devices or elements referred to must have a specific direction, be constructed and operate in a specific direction, and therefore cannot be understood as limiting the present application. In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0025] The embodiments of the present application provide a highly integrated built-in cooling system, a hybrid power box and a vehicle, which adopt a design scheme of built-in cooling water channels. The scheme has a simple pipeline layout, improves the cooling effect and reduces the design cost by shortening the length of the water pipe.

[0026] The following is a detailed description of a highly integrated built-in cooling system provided by this embodiment in conjunction with the accompanying drawings. Figure 1 , Figure 2 As shown, it includes: a shell 1, a motor controller 2, an oil cooler 3 and a cooling water channel 4. The shell 1 is provided with a generator cavity 11 and a motor cavity 12; the motor controller 2 is arranged at the top position of the shell 1, and a first heat exchange channel 21 is arranged inside, and the first heat exchange channel 21 is used for the cooling water of the whole vehicle to be connected and to cool the motor controller 2 for heat exchange; the oil cooler 3 is arranged at the bottom side position of the shell 1, and a second heat exchange channel 31 is arranged inside, and the second heat exchange channel 31 is used for cooling water to cool the lubricating oil in the oil cooler 3 and then flow out; the cooling water channel 4 is built in the shell 1, and connects the first heat exchange channel 21 and the second heat exchange channel 31.

[0027] In this embodiment, the cooling water of the whole vehicle is connected to the first heat exchange channel 21, and the motor controller 2 is cooled and heat exchanged in the first heat exchange channel 21. After cooling and heat exchange, it enters the second heat exchange channel 31 through the cooling water channel 4, and cools the lubricating oil in the oil cooler 3 in the second heat exchange channel 31, and then flows back to the whole vehicle again. In the above cooling system, the shell 1 does not need an external water pipe, and the layout space of the DHT gearbox and external pipelines is reduced as much as possible. The layout of the whole vehicle is completely unrestricted, and the adaptability of the whole vehicle is high; the cooling water channel 4 is built into the shell 1, the layout is simple, the water channel length is shortened, the pressure loss is small, the cooling efficiency is high, and the performance and life of the motor can be limitedly improved; at the same time, the number of parts is also reduced, which reduces the cost and improves the market competitiveness.

[0028] Please continue to refer to Figure 1 , Figure 2As shown, in this embodiment, it should be noted that the cooling water channel 4 includes a first cooling water channel 41 and a second cooling water channel 42, the upper end of the first cooling water channel 41 is connected to the outlet of the first heat exchange channel 21, the lower end of the first cooling water channel 41 is connected to the upper end side of the second cooling water channel 42, and the lower end of the second cooling water channel 42 is connected to the inlet of the second heat exchange channel 31. After cooling and heat exchange in the motor controller 2, the cooling water flows into the first cooling water channel 41 and the second cooling water channel 42 in sequence through the outlet, and finally enters the oil cooler 3 through the inlet of the second heat exchange channel 31. In this embodiment, the cooling water channel 4 is divided into the first cooling water channel 41 and the second cooling water channel 42, which is convenient for adjusting the path inside the shell 1 according to the layout of the actual components, and the water channel layout is simple and less curved.

[0029] In one example, the first cooling water channel 41 is obliquely connected to the second cooling water channel 42. By adopting the oblique connection mode, the overall height of the cooling water channel 4 can be reduced, which facilitates high integration inside the housing 1 and a compact structure.

[0030] In this embodiment, it should be noted that a cooling water inlet pipe 5 is provided on the motor controller 2; the cooling water inlet pipe 5 is connected to the first heat exchange channel 21 inside the motor controller 2. The cooling water from the vehicle is connected to the first heat exchange channel 21 through the cooling water inlet pipe 5, and the cooling water cools the motor controller 2 in the first heat exchange channel 21, and enters the cooling water channel 4 after cooling.

[0031] The oil cooler 3 is provided with a cooling water outlet pipe 6, which is connected to the second heat exchange channel 31 inside the oil cooler 3. The cooling water of the vehicle cools the motor controller 2 and then enters the cooling water channel 4, and then enters the second heat exchange channel 31 through the cooling water channel 4. The cooling water cools the lubricating oil through heat exchange in the second heat exchange channel 31, and then flows out through the cooling water outlet pipe 6 and returns to the vehicle again after the heat exchange is completed.

[0032] In this embodiment, it should also be noted that the housing 1 is integrally die-cast, and the generator cavity 11 and the motor cavity 12 are adjacently arranged and separated by a partition 13. In this embodiment, the generator cavity 11 and the motor cavity 12 are integrally die-cast, which not only enables the generator cavity 11 and the motor cavity 12 to be integrated into one on the same housing 1, but also includes a cooling water channel 4 that is highly integrated inside the housing 1.

[0033] In this embodiment, it should also be noted that the cooling water channel 4 is a built-in water channel formed by machining.

[0034] This embodiment also provides a hybrid power box, including the above-mentioned highly integrated built-in cooling system.

[0035] This embodiment also provides a vehicle, including the above-mentioned hybrid power box.

[0036] The implementation principle of this embodiment is as follows: the cooling water from the whole vehicle is connected to the first heat exchange channel 21 through the cooling water inlet pipe 5. After the cooling water cools the motor controller 2, it enters the second heat exchange channel 31 through the cooling water channel 4, cools the lubricating oil through heat exchange in the oil cooler 3, and flows out through the cooling water outlet pipe 6 after the heat exchange is completed. Therefore, the entire cooling pipeline is simple, the water path is short, the pressure loss is small, the cooling efficiency is high, and the performance and life of the motor can be limitedly improved; at the same time, the number of parts is also reduced, the cost is reduced, and the market competitiveness is improved. In addition, due to the built-in cooling water channel 4, the layout of the whole vehicle is completely unrestricted, and the adaptability of the whole vehicle is very high.

[0037] The technical features of the above embodiments may be combined arbitrarily. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0038] The above-described embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be construed as limiting the scope of the patent application. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the patent application shall be subject to the attached claims.

Claims

1. A highly integrated built-in cooling system, characterized in that: include: A housing (1), wherein a generator cavity (11) and a motor cavity (12) are arranged in the housing (1); A motor controller (2), the motor controller (2) being arranged at the top of the housing (1) and having a first heat exchange channel (21) arranged therein, the first heat exchange channel (21) being used for receiving cooling water of the entire vehicle and performing cooling and heat exchange on the motor controller (2); An oil cooler (3), the oil cooler (3) being arranged at a bottom side position of the housing (1) and having a second heat exchange channel (31) arranged therein, the second heat exchange channel (31) being used for cooling water to cool the lubricating oil in the oil cooler (3) and then flowing out; A cooling water channel (4), wherein the cooling water channel (4) is built into the shell (1) and is connected to the first heat exchange channel (21) and the second heat exchange channel (31).

2. The highly integrated built-in cooling system according to claim 1, characterized in that: The cooling water channel (4) comprises a first cooling water channel (41) and a second cooling water channel (42); The upper end of the first cooling water channel (41) is connected to the outlet of the first heat exchange channel (21); The lower end of the first cooling water channel (41) is connected to the upper end side of the second cooling water channel (42); The lower end of the second cooling water channel (42) is connected to the inlet of the second heat exchange channel (31).

3. The highly integrated built-in cooling system according to claim 2, characterized in that: The first cooling water channel (41) is obliquely connected to the second cooling water channel (42).

4. The highly integrated built-in cooling system according to any one of claims 1 to 3, characterized in that: The motor controller (2) is provided with a cooling water inlet pipe (5); The cooling water inlet pipe (5) is connected to the first heat exchange channel (21).

5. The highly integrated built-in cooling system according to claim 4, characterized in that: The oil cooler (3) is provided with a cooling water outlet pipe (6); The cooling water outlet pipe (6) is connected to the second heat exchange channel (31).

6. The highly integrated built-in cooling system according to any one of claims 1 to 3, characterized in that: The housing (1) is formed by integral die casting.

7. The highly integrated built-in cooling system according to any one of claims 1 to 3, characterized in that: The generator cavity (11) and the motor cavity (12) are arranged adjacent to each other and are separated by a partition plate (13).

8. The highly integrated built-in cooling system according to any one of claims 1 to 3, characterized in that: The cooling water channel (4) is a built-in water channel formed by machining.

9. A hybrid power box, characterized in that: Comprising a highly integrated built-in cooling system as described in any one of claims 1-8.

10. A vehicle, characterized in that: Comprising a hybrid power box as claimed in claim 9.

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