Thermal management system of hybrid electric vehicle and hybrid electric vehicle

Abstract

The invention discloses a thermal management system of a hybrid electric vehicle and the hybrid electric vehicle. The thermal management system comprises a closed upper grid structure and a lower grid structure with an opening, a condenser, a gearbox oil cooler, a low-temperature radiator, a high-temperature radiator and a cooling fan are arranged on the inner side of the lower grating structure; the condenser is located at the foremost end close to the lower grating structure, the gearbox oil cooler and the low-temperature radiator are arranged at the rear end of the condenser side by side, the low-temperature radiator is located at the bottom of the gearbox oil cooler, and at least part of the low-temperature radiator is directly opposite to an opening of the lower grating structure. And the high-temperature radiator and the cooling fan are sequentially arranged at the rear ends of the gearbox oil cooler and the low-temperature radiator. On one hand, all parts of the cooling module can achieve the functions, and it is guaranteed that the air conditioner and the cooling performance meet the index requirements; and on the other hand, the first hybrid vehicle model with the electric modeling style is successfully developed, and platform development experience is provided for thermal management development of other vehicle models.

Description

Technical Field

[0001] The present invention relates to the technical field of hybrid vehicle structures, in particular to a hybrid vehicle thermal management system. Background Art

[0002] The overall appearance structure of existing hybrid vehicles is not significantly different from that of fuel vehicles. The applicant has developed the first hybrid vehicle with an electrified styling style. Specifically, the front face design of this hybrid vehicle is based on the closed grille structure of electric cars. However, this front face design is bound to have an adverse effect on the thermal management system, so the hybrid vehicle thermal management system under this design concept needs to be further improved. Summary of the invention

[0003] Technical issues solved

[0004] The purpose of the present invention is to remedy the deficiencies of the prior art and to provide a thermal management system for a hybrid vehicle.

[0005] Technical Solution

[0006] To achieve the above-mentioned object, the present invention provides the following technical solutions: A thermal management system for a hybrid vehicle comprises a closed upper grille structure and a lower grille structure having an opening;

[0007] The condenser, transmission oil cooler, low-temperature radiator, high-temperature radiator and cooling fan are arranged inside the lower grille structure;

[0008] The condenser is located at the front end near the lower grille structure, the transmission oil cooler and the low-temperature radiator are placed side by side at the rear end of the condenser, the low-temperature radiator is located at the bottom of the transmission oil cooler, and at least a part of the low-temperature radiator is directly opposite to the opening of the lower grille structure, and the high-temperature radiator and the cooling fan are arranged in sequence at the rear ends of the transmission oil cooler and the low-temperature radiator.

[0009] As mentioned above, the opening position of the lower grille structure is arranged at the bottom of the lower grille structure.

[0010] In the above, the ratio of the opening area of ​​the lower grille to the opening area of ​​the high-temperature radiator is greater than or equal to 25%, and the ratio of the opening height of the lower grille to the height of the high-temperature radiator is greater than or equal to 30%.

[0011] As mentioned above, a misalignment space is reserved at the bottom of the condenser to enable the opening of the lower grille structure to be directly opposite to the bottom of the low-temperature radiator.

[0012] As mentioned above, the height of the offset space reserved at the bottom of the condenser is between 70mm and 90mm.

[0013] As mentioned above, the power of the cooling fan is at least 1000W.

[0014] As mentioned above, the outlet oil temperature boundary value of the transmission oil cooler is 90°C, and the outlet water temperature boundary value of the low-temperature radiator is 65°C.

[0015] As mentioned above, the top and bottom of the high temperature radiator are sealed at the connection with the outside.

[0016] A hybrid vehicle adopts the above-mentioned thermal management system of the hybrid vehicle.

[0017] As mentioned above, the upper part of the front face structure of the hybrid vehicle is closed, and the lower part is provided with a grille opening structure, presenting the front face style of an electric car.

[0018] Beneficial effects:

[0019] Compared with the prior art, the thermal management system of the hybrid vehicle has the following beneficial effects:

[0020] The present invention rationally arranges the components of the thermal management system to form a four-layer structure, taking into account the cooling performance of the low-temperature system of the hybrid vehicle (MCU / CDU / engine intercooler) and taking into account the platform development of the cooling module, increasing the air intake of the low-temperature radiator and reducing the air intake temperature. On the one hand, it ensures that all components of the cooling module achieve their functions and that the air conditioning and cooling performance meet the index requirements; on the other hand, it successfully develops the first hybrid vehicle with an electric styling style, providing platform development experience for the thermal management development of other models.

[0021] Other advantages, objectives and features of the present invention will be set forth in part in the following description and, in part, will be apparent to those skilled in the art based on an examination of the following or may be taught from the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0023] Figure 2 It is a front view of the hybrid vehicle thermal management system of the present invention. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0025] like Figure 1-2 As shown, the present invention provides a technical solution: a thermal management system of a hybrid vehicle and a hybrid vehicle.

[0026] Reference Figure 1 As shown, it includes a closed upper grille structure and a lower grille structure with an opening;

[0027] The inner side of the lower grille structure is provided with a condenser 1, a transmission oil cooler 2, a low-temperature radiator 3, a high-temperature radiator 4 and a cooling fan 6;

[0028] The condenser is located at the front end near the lower grille structure, the gearbox oil cooler 2 and the low-temperature radiator 3 are placed in parallel at the rear end of the condenser 1, the low-temperature radiator 3 is located at the bottom of the gearbox oil cooler 2, and at least part of the low-temperature radiator 3 is directly opposite to the opening 5 of the lower grille structure; Figure 1 As shown, a misalignment space is reserved at the bottom of the condenser to enable the opening 5 of the lower grille structure to be directly opposite to the bottom of the low-temperature radiator. The height of the misalignment space reserved at the bottom of the condenser 1 is between 70mm and 90mm, preferably 70mm. As shown in the figure, the structure of the condenser 1 is equivalent to reducing the Z-direction height of its bottom, so in order to ensure the performance of the condenser 1, on this basis, the traditional 12mm is thickened to at least 16mm.

[0029] The opening 5 of the lower grid structure is arranged at the bottom of the lower grid structure.

[0030] The ratio of the opening area of ​​the lower grille 5 to the opening area of ​​the high temperature radiator 4 is greater than or equal to 25%, and the ratio of the opening height of the lower grille to the height of the high temperature radiator 4 is greater than or equal to 30%. This ensures the air intake and the air intake requirements of the supercooling zone of the condenser 1.

[0031] The high temperature radiator 4 and the cooling fan 6 are arranged in sequence at the rear ends of the transmission oil cooler 2 and the low temperature radiator 3 .

[0032] Taking into account the reduction in air volume of the overall cooling module, the deterioration of the flow field, and the harsh idling conditions, the power of cooling fan 6 is increased from the traditional 450W to at least 1000W.

[0033] In general, the layout structure on the vehicle body has not changed much, so the relevant parts do not need to be changed. Based on the principle of giving priority to air conditioning performance, the condenser 1 is arranged on the first layer at the front end; the gearbox oil cooler 2 and the low-temperature radiator 3 need to be placed on the second layer. Considering that the outlet oil temperature boundary value of the gearbox oil cooler 2 is 90°C, and the outlet water temperature boundary value of the low-temperature radiator 3 is 65°C, the low-temperature radiator 3 is arranged at the bottom to facilitate air intake, and the gearbox oil cooler 2 is arranged at the top; the high-temperature radiator 4 is arranged on the third layer; the cooling fan 6 is arranged on the fourth layer.

[0034] It should be noted that, in this article, the orientation or position relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside", etc. is based on the orientation or position relationship shown in the drawings, which is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention; the terms "first", "second", and "third" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance. In addition, unless otherwise clearly specified and limited, the terms "fixed", "installed", "connected", and "connected" should be understood in a broad sense. For example, "installed" can be a fixed connection, a detachable connection, or an integral connection; "connected" can be a mechanical connection or an electrical connection; "connected" can be a direct connection, an indirect connection through an intermediate medium, or a connection between the two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0035] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A thermal management system for a hybrid vehicle, characterized in that: It includes a closed upper grille structure and a lower grille structure with an opening; The condenser, transmission oil cooler, low-temperature radiator, high-temperature radiator and cooling fan are arranged inside the lower grille structure; The condenser is located at the front end near the lower grille structure, the transmission oil cooler and the low-temperature radiator are placed side by side at the rear end of the condenser, the low-temperature radiator is located at the bottom of the transmission oil cooler, and at least a part of the low-temperature radiator is directly opposite to the opening of the lower grille structure, and the high-temperature radiator and the cooling fan are arranged in sequence at the rear ends of the transmission oil cooler and the low-temperature radiator.

2. A thermal management system for a hybrid vehicle according to claim 1, characterized in that: The opening position of the lower grille structure is arranged at the bottom of the lower grille structure.

3. A thermal management system for a hybrid vehicle according to claim 2, characterized in that: The ratio of the opening area of ​​the lower grille to the opening area of ​​the high-temperature radiator is greater than or equal to 25%, and the ratio of the opening height of the lower grille to the height of the high-temperature radiator is greater than or equal to 30%.

4. The thermal management system of a hybrid vehicle according to claim 3, characterized in that: A misalignment space is reserved at the bottom of the condenser to enable the opening of the lower grille structure to be directly opposite to the bottom of the low-temperature radiator.

5. The thermal management system of a hybrid vehicle according to claim 4, characterized in that: The height of the offset space reserved at the bottom of the condenser is between 70mm and 90mm.

6. A hybrid vehicle thermal management system according to claim 5, characterized in that: The cooling fan must have a power of at least 1000W.

7. The thermal management system of a hybrid vehicle according to claim 6, characterized in that: The outlet oil temperature boundary value of the transmission oil cooler is 90℃, and the outlet water temperature boundary value of the low-temperature radiator is 65℃.

8. The thermal management system of a hybrid vehicle according to claim 7, characterized in that: The top and bottom of the high temperature radiator are sealed at the external connections.

9. A hybrid vehicle, characterized in that: A hybrid vehicle thermal management system according to any one of claims 1 to 8 is adopted.

10. The hybrid vehicle according to claim 9, characterized in that: The upper part of the front face structure of the hybrid car is closed, and the lower part is provided with a grille opening structure, presenting the front face style of an electric sedan.

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