Cooling structure of vehicle power component and vehicle

Abstract

The utility model provides a cooling structure of a vehicle power component and a vehicle, the cooling structure of the vehicle power component comprises a cooling flow channel arranged in a shell of the vehicle power component; the cooling flow channel comprises a first flow channel and a second flow channel which are arranged in the shell, cooling liquid circulates in the first flow channel, and oil liquid circulates in the second flow channel; seen from the cross section of the shell, the first flow channel is arranged in the circumferential direction of the shell, and the second flow channel is located on one side of the shell; the first flow channel is provided with a heat exchange section which exchanges heat with the second flow channel, the heat exchange section comprises two branch flow channels which are arranged in parallel, and the second flow channel is located between the two branch flow channels. According to the cooling structure of the vehicle power component, integration and arrangement of oil cooling on the shell of the vehicle power component can be achieved, occupied space can be reduced, the space utilization rate of the whole vehicle is increased, oil and a main body of the vehicle power component can be cooled at the same time, and the good cooling effect is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of vehicle parts, in particular to a cooling structure for vehicle power components. At the same time, the utility model also relates to a vehicle provided with the cooling structure for vehicle power components. Background Art

[0002] In the powertrain of existing vehicles, most of the power components need to use an oil cooling structure, and usually an external plate-fin box-type oil cooler is used. For example, the external oil cooler is fixedly connected to the transmission housing through bolts, and the two are sealed by a sealing ring arranged at the oil port of the transmission housing. Specifically, the transmission oil passes through the housing oil passage into and out of the oil cavity of the oil cooler, the water cavity of the oil cooler is filled with the vehicle coolant, and the oil in the oil cavity exchanges heat with the coolant through the aluminum housing of the oil cooler, so as to achieve the purpose of cooling the transmission oil.

[0003] However, although the external oil cooler has a good heat dissipation effect, due to its complex internal structure, the pressure drop of the transmission oil increases after passing through the oil cooler, which is not conducive to the improvement of work efficiency. In addition, the external oil cooler has a large volume, requires a high layout space for the whole vehicle, and seals are required for both the interface with the transmission and the whole vehicle, increasing the risk of leakage. Therefore, there are still problems in the power components of existing vehicles, such as large oil pressure drop affecting work efficiency and low space utilization rate, which are not conducive to the improvement of the overall vehicle quality. Summary of the Utility Model

[0004] In view of this, the utility model aims to provide a cooling structure for vehicle power components, which is conducive to reducing the oil pressure drop and improving the space utilization rate.

[0005] To achieve the above object, the technical solution of the utility model is realized as follows:

[0006] A cooling structure for vehicle power components includes a cooling flow channel arranged in the housing of the vehicle power components;

[0007] The cooling flow channel includes a first flow channel and a second flow channel arranged in the housing. The first flow channel is filled with coolant, and the second flow channel is filled with oil;

[0008] Viewed from the cross-section of the housing, the first flow channel is arranged along the circumferential direction of the housing, and the second flow channel is located on one side of the housing;

[0009] The first flow channel has a heat exchange section for heat exchange with the second flow channel. The heat exchange section includes two parallel branch flow channels, and the second flow channel is located between the two branch flow channels.

[0010] Further, a protruding portion is provided on the outer sidewall of the housing, and both the heat exchange section and the second flow channel are formed on the protruding portion.

[0011] Further, a protruding portion protruding into the second flow channel is provided on the inner wall of the second flow channel.

[0012] Further, there are two opposite inner walls in the second flow channel, and a plurality of the protruding portions are provided on both of the opposite inner walls.

[0013] Further, from the cross-section of the housing, the protruding portions on one inner wall and the protruding portions on the other inner wall are arranged alternately along the length direction of each inner wall.

[0014] Further, the first flow channel is arranged in a circle around the circumference of the housing.

[0015] Compared with the prior art, the present utility model has the following advantages:

[0016] For the cooling structure of the vehicle power component of the present utility model, a first flow channel through which a coolant flows and a second flow channel through which an oil fluid flows can be arranged in the housing of the vehicle power component. And from the cross-section of the housing, the first flow channel is arranged along the circumference of the housing, and the second flow channel is located on one side of the housing, so as to realize the integration and arrangement of oil cooling on the housing of the vehicle power component. This not only helps to reduce the space occupation, improve the layout rationality and space utilization rate of the power assembly and the whole vehicle, but also can avoid a large pressure drop of the oil fluid, which affects the working efficiency of the vehicle power component. At the same time, the first flow channel has a heat exchange section for heat exchange with the second flow channel, and the second flow channel is located between two parallel branch flow channels in the heat exchange section, so that both the oil fluid and the main body of the vehicle power component are cooled simultaneously, thus having a good cooling effect. Therefore, the cooling structure of the vehicle power component has a good use effect.

[0017] Secondly, by providing the protruding part, it is beneficial to arrange the second flow channel on one side of the housing, and through the design that the two branch flow channels of the heat exchange section surround the second flow channel for cooling, thereby ensuring the rationality of the structural part and improving the heat exchange effect. The provision of the protruding part is conducive to increasing the heat exchange area, thereby improving the heat exchange effect between the oil and the coolant. The second flow channel has two opposite inner walls, and a plurality of protruding parts are provided on both of the opposite inner walls, which can further increase the heat exchange area so that the heat exchange efficiency is further improved. From the cross-section of the housing, the protruding parts on one inner wall and the protruding parts on the other inner wall are arranged alternately along the length direction of each inner wall, which can prevent the opposite protruding parts from affecting the protruding size due to being directly opposite, that is, it is beneficial to arrange the plurality of protruding parts on each inner wall, and the protruding sizes of the protruding parts can also have a relatively large value range to meet different heat exchange requirements. The first flow channel is arranged in a circle around the circumference of the housing, which can increase the heat exchange range between the first flow channel and the main body of the vehicle power component, and thus improve the heat exchange effect between the two.

[0018] Another object of the present invention is to provide a vehicle, in which the cooling structure of the vehicle power component as described above is provided.

[0019] Furthermore, the vehicle power component is a drive motor, a speed reducer or a transmission.

[0020] In the vehicle provided with the cooling structure of the vehicle power component as described in the present invention, compared with the conventional solution of arranging an oil cooler on one side of the vehicle power component, the integrated design of the vehicle power component and the oil cooler can be realized. Not only can the oil hydraulic pressure drop be reduced and the working efficiency of the vehicle power component be improved on the premise of ensuring a good cooling effect on the vehicle power component, but also the space occupation can be reduced to facilitate the improvement of the overall vehicle space utilization rate, thereby making the whole vehicle have better product quality and market competitiveness. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The accompanying drawings that form a part of the present invention are used to provide a further understanding of the present invention. The schematic embodiments and descriptions thereof of the present invention are used to explain the present invention and do not constitute an improper limitation to the present invention. In the drawings:

[0022] Figure 1 is a schematic diagram of the overall structure of the cooling structure of the vehicle power component according to an embodiment of the present invention;

[0023] Figure 2 is Figure 1 a cross-sectional view taken along the A-A direction in

[0024] Figure 3 is Figure 2 a partial structure diagram of the structure shown in

[0025] Description of the reference numerals in the drawings:

[0026] 10. Housing; 100. Installation cavity; 101. Inner wall; 1010. Partition wall; 1011. First stop wall; 1012. Second stop wall; 102. Outer wall; 103. Protrusion;

[0027] 11. First flow channel; 111. Heat exchange section; 1111. Branch flow channel; 112. Inlet; 113. Outlet; 114. First communication channel; 115. Second communication channel; 12. Second flow channel; 121. Protrusion;

[0028] s. Cross-section of the housing. Detailed implementation manners

[0029] It should be noted that, without conflict, the embodiments in the present utility model and the features in the embodiments can be combined with each other.

[0030] In the description of the present utility model, it should be noted that if terms indicating orientation or positional relationship such as "upper", "lower", "inner", "outer", etc. appear, they are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the present utility model. In addition, if terms such as "first" and "second" appear, they are also only for descriptive purposes and cannot be construed as indicating or implying relative importance.

[0031] In addition, in the description of the present utility model, unless otherwise clearly defined, the terms "installation", "connection", "connection", "connecting member" 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 or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood in combination with specific situations.

[0032] The present utility model will be described in detail below with reference to the drawings and in combination with embodiments.

[0033] Embodiment 1

[0034] This embodiment relates to a cooling structure for a vehicle power component. Compared with the conventional solution of arranging an oil cooler on one side of the vehicle power component, the integrated design of the oil cooler can be realized. On the one hand, it is beneficial to improve the space utilization rate, and on the other hand, it can also reduce the oil hydraulic pressure drop on the premise of ensuring a good cooling effect on the vehicle power component, so as to improve the working efficiency of the vehicle power component.

[0035] In terms of the overall structure, asFigures 1 to 3 As shown, the cooling structure of the vehicle power component in this embodiment includes a cooling flow channel provided in the housing 10 of the vehicle power component. Moreover, the cooling flow channel includes a first flow channel 11 and a second flow channel 12 provided in the housing 10. Coolant flows through the first flow channel 11, and oil flows through the second flow channel 12.

[0036] Meanwhile, from the cross-section s of the housing 10, the first flow channel 11 is arranged along the circumferential direction of the housing 10, and the second flow channel 12 is located on one side of the housing 10. Furthermore, the first flow channel 11 has a heat exchange section 111 for heat exchange with the second flow channel 12. The heat exchange section 111 includes two parallel branch channels 1111, and the second flow channel 12 is located between the two branch channels 1111.

[0037] At this time, with the above settings, by arranging the first flow channel 11 through which coolant flows and the second flow channel 12 through which oil flows in the housing 10 of the vehicle power component, and from the cross-section s of the housing 10, the first flow channel 11 is arranged along the circumferential direction of the housing 10, and the second flow channel 12 is located on one side of the housing 10, the integration and arrangement of oil cooling on the housing 10 of the vehicle power component can be realized. Compared with the scheme of setting an oil cooler on one side of the vehicle power component in the traditional technology, it not only helps to reduce space occupation, improve the layout rationality and space utilization rate of the power assembly and the whole vehicle, but also can avoid a large pressure drop of the oil, which affects the working efficiency of the vehicle power component. At the same time, the first flow channel 11 has a heat exchange section 111 for heat exchange with the second flow channel 12, and the second flow channel 12 is located between the two parallel branch channels 1111 of the heat exchange section 111, which also enables the oil and the main body of the vehicle power component to be cooled simultaneously, thus having a good cooling effect.

[0038] It should be noted that the direction-related expressions in this embodiment are only exemplary descriptions of this embodiment. During specific implementation, the direction expressions in this embodiment vary with the setting direction of the housing 10 of the vehicle power component, that is, the directions in this embodiment refer to the relative coordinate system based on the housing 10 of the vehicle power component.

[0039] Based on the above overall introduction, in this embodiment, in detail, during specific implementation, the vehicle power component in this embodiment includes a housing 10 and the main body of the vehicle power component provided in the housing 10. That is, an installation cavity 100 for installing the main body of the vehicle power component is also formed in the housing 10. In the specific structure, when the first flow channel 11 is arranged around the circumferential direction of the housing 10, it also synchronously arranges around the installation cavity 100. The second flow channel 12 is communicated with the installation cavity 100 to supply oil to the installation cavity 100, playing a dual role of lubrication and cooling.

[0040] Meanwhile, when the vehicle power component is specifically implemented, it can be, for example, a drive motor, a transmission, or a reducer, etc. In this embodiment, the vehicle power component is taken as a drive motor as an example for specific description, and the structure of the housing 10 of the drive motor integrating the cooling structure of the vehicle power component in this embodiment is mainly presented in the drawings. At this time, the coolant introduced into the first flow channel 11 can be the coolant at the vehicle end, and in a vehicle model with both a drive motor and a transmission, the second flow channel 12 can be connected to the oil of the transmission. In this way, the cooling of the transmission can be realized to a certain extent, and the use effect is better. Moreover, based on the small hydraulic pressure drop after integration, the power consumption of the oil pump can be reduced, thereby improving the working efficiency of the motor and the transmission.

[0041] In addition, in this embodiment, as a preferred implementation form, refer to Figure 2 As shown, a protrusion 103 is provided on the outer side wall 102 of the housing 10, and the heat exchange section 111 and the second flow channel 12 are both formed on the protrusion 103. In this way, by setting the protrusion 103, it is beneficial to arrange the second flow channel 12 on one side inside the housing 10, and through the design that the two branch flow channels 1111 of the heat exchange section 111 surround the second flow channel 12 for cooling, thereby ensuring the rationality of the structural part and improving the heat exchange effect.

[0042] When specifically implemented, in this embodiment, as a preferred implementation form, continue to refer to Figure 2 As shown, a protrusion 121 protruding into the second flow channel 12 is provided on the inner wall of the second flow channel 12. The main advantage of such a setting is that it is beneficial to increase the heat exchange area, thereby improving the heat exchange effect between the oil and the coolant.

[0043] Moreover, in this embodiment, as a preferred implementation form, there are two opposite inner walls in the second flow channel 12, and a plurality of protrusions 121 are provided on both of the two opposite inner walls. It can be understood that there are two opposite inner walls in the second flow channel 12, and a plurality of protrusions 121 are provided on both of the two opposite inner walls, which can further increase the heat exchange area so as to further improve the heat exchange efficiency.

[0044] Secondly, also as a preferred implementation form, in this embodiment, from the cross-section s of the housing 10, the protrusions 121 on one inner wall and the protrusions 121 on the other inner wall are arranged alternately along the length direction of each inner wall. The main advantage of such a setting is that it can avoid the influence of the opposite protrusions 121 on the protruding size of the protrusions 121 due to being directly opposite, that is, it is beneficial to the arrangement of the plurality of protrusions 121 on each inner wall, and the protruding sizes of the protrusions 121 can also have a relatively large value range to facilitate meeting different heat exchange requirements.

[0045] In addition, in this embodiment, as a preferred implementation form, the first flow channel 11 is arranged in a circle around the circumferential direction of the housing 10. The first flow channel 11 is arranged in a circle around the circumferential direction of the housing 10 to increase the heat exchange range between the first flow channel 11 and the main body of the vehicle power component, thereby improving the heat exchange effect between the two.

[0046] Specifically, when taking the housing 10 of the drive motor as an example in this embodiment for illustration, the housing 10 of the drive motor is generally cylindrical in overall visual appearance. At this time, from the cross-section s of the housing 10, the housing 10 includes an inner side wall 101 and an outer side wall 102. The installation cavity 100 is formed inside the inner side wall 101. Both the first flow channel 11 and the second flow channel 12 are formed between the inner side wall 101 and the outer side wall 102. At the same time, the first flow channel 11 is arranged along the circumferential direction of the housing 10. The protruding part 103 is formed by the outer side wall 102 of the housing 10 protruding radially outward along the housing 10. The second flow channel 12 and the heat exchange section 111 of the first flow channel 11 are both formed on the protruding part 103 to facilitate obtaining good use effects.

[0047] Meanwhile, the second flow channel 12 has two inner walls arranged opposite to each other along the radial direction of the housing 10 (wherein, in Figure 2 the shown state, the left and right ends of the two inner walls are also respectively blocked by inner walls or connecting walls to form the second flow channel 12. In this embodiment, the protruding parts 121 are mainly arranged on the two inner walls of the second flow channel 12 arranged opposite to each other along the radial direction of the housing 10, and will not be elaborated hereinafter). A plurality of the above-mentioned protruding parts 121 are provided on each inner wall, and both inner walls have a shape trend adapted to the radian of the housing 10. In this way, it is beneficial for the branch flow channels 1111 close to the installation cavity 100 to form a connected circular channel with the part of the first flow channel 11 except the heat exchange section 111, improving the cooling effect on the main body of the vehicle power component in the installation cavity 100. Of course, the plurality of protruding parts 121 on each inner wall are arranged at intervals along the length direction of the corresponding inner wall ( Figure 2 the left and right direction shown in

[0048] In addition, an inlet 112 of the first flow channel 11 and an outlet 113 of the first flow channel 11 are further provided on the housing 10. Specifically, it can still be as Figure 2 and Figure 3In the state shown, a blocking partition wall 1010 protrudes from the inner side wall 101 of the housing 10 toward the outer side wall 102. The blocking partition wall 1010 blocks the first flow channel 11. The outlet 113 and the inlet 112 are respectively arranged on the left and right sides of the blocking portion. And when necessary, a first blocking wall 1011 and a second blocking wall 1012 may also protrude from the inner side wall 101 toward the outer side wall 102, so as to respectively form a first communication channel 114 and a second communication channel 115 with a smaller flow area between the inlet 112 and the first flow channel 11 and between the outlet 113 and the first flow channel 11, so as to meet the pressure adaptation requirements when the coolant flows in and out. In the specific structure, the inlet 112 is communicated with the first flow channel 11 through the first communication channel 114, and the outlet 113 is communicated with the first flow channel 11 through the second communication channel 115.

[0049] In this embodiment, the coolant enters the first flow channel 11 in the housing 10 of the drive motor through the inlet 112. Figure 2 In the state shown, the coolant circulates in the clockwise direction. During the coolant circulation process, it will enter the heat exchange section 111 arranged corresponding to the second flow channel 12, and after the coolant circulation ends, it leaves the housing 10 of the drive motor through the outlet 113. The second flow channel 12 is filled with oil to cool and lubricate the body of the drive motor, and the plurality of protruding portions 121 in the second flow channel 12 can also play a role in enhancing the heat exchange efficiency. It can be understood that the coolant can synchronously cool the body of the drive motor in the installation cavity 100 and the oil in the second flow channel 12, which is beneficial to improving the cooling effect of the drive motor.

[0050] The cooling structure of the vehicle power component in this embodiment can be realized by arranging a first flow channel 11 through which coolant flows and a second flow channel 12 through which oil flows in the housing 10 of the vehicle power component. And from the cross-section s of the housing 10, the first flow channel 11 is arranged along the circumferential direction of the housing 10, and the second flow channel 12 is located on one side of the housing 10, so as to realize the integration and arrangement of oil cooling on the housing 10 of the vehicle power component. Compared with the traditional scheme of arranging an oil cooler on one side of the vehicle power component, it is not only beneficial to reduce space occupation, improve the layout rationality and space utilization rate of the power assembly and the whole vehicle, but also can avoid a large pressure drop of the oil, which affects the working efficiency of the vehicle power component. At the same time, the first flow channel 11 has a heat exchange section 111 for heat exchange with the second flow channel 12, and the second flow channel 12 is located between two parallel branch channels 1111 in the heat exchange section 111, so that the oil and the main body of the vehicle power component are cooled simultaneously, thus having a good cooling effect. Therefore, the cooling structure of the vehicle power component has a good use effect.

[0051] Embodiment 2

[0052] This embodiment relates to a vehicle, which is provided with the cooling structure of the vehicle power components in Embodiment 1. Specifically, in an optimal implementation form, the vehicle power components can be a drive motor, a reducer, a transmission, or the like.

[0053] For the vehicle of this embodiment, by setting the cooling structure of the vehicle power components in Embodiment 1, compared with the solution of setting an oil cooler on one side of the vehicle power components in the traditional technology, the integrated design of the vehicle power components and the oil cooler can be realized, which is not only beneficial to reducing the oil pressure drop and improving the working efficiency of the vehicle power components, but also beneficial to improving the space utilization rate of the whole vehicle, thus being beneficial to improving the quality of the whole vehicle and the market competitiveness.

[0054] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A cooling structure for a vehicle power component, characterized in that: It includes a cooling flow channel provided in a housing (10) of the vehicle power component; The cooling flow channel includes a first flow channel (11) and a second flow channel (12) provided in the housing (10). Coolant flows in the first flow channel (11), and oil flows in the second flow channel (12); Viewed from a cross-section (s) of the housing (10), the first flow channel (11) is arranged along the circumferential direction of the housing (10), and the second flow channel (12) is located on one side of the housing (10); The first flow channel (11) has a heat exchange section (111) for heat exchange with the second flow channel (12). The heat exchange section (111) includes two parallel branch flow channels (1111), and the second flow channel (12) is located between the two branch flow channels (1111).

2. The cooling structure for a vehicle power component according to claim 1, characterized in that: A protruding portion (103) is provided on an outer side wall (102) of the housing (10), and the heat exchange section (111) and the second flow channel (12) are both formed on the protruding portion (103).

3. The cooling structure for a vehicle power component according to claim 1, characterized in that: A protruding portion (121) protruding into the second flow channel (12) is provided on an inner wall of the second flow channel (12).

4. The cooling structure for a vehicle power component according to claim 3, characterized in that: There are two opposite inner walls in the second flow channel (12), and a plurality of the protruding portions (121) are provided on each of the two opposite inner walls.

5. The cooling structure for a vehicle power component according to claim 4, characterized in that: Viewed from a cross-section (s) of the housing (10), the protruding portions (121) on one inner wall and the protruding portions (121) on the other inner wall are arranged alternately along the length direction of each inner wall.

6. The cooling structure for a vehicle power component according to any one of claims 1 to 5, characterized in that: The first flow channel (11) is a circle arranged around the circumferential direction of the housing (10).

7. A vehicle, characterized in that: The vehicle is provided with the cooling structure for a vehicle power component according to any one of claims 1 to 6.

8. The vehicle according to claim 7, characterized in that: The vehicle power component is a drive motor, a speed reducer or a transmission.

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