Thermal management system of hybrid vehicle and hybrid vehicle

Abstract

This invention discloses a thermal management system for a hybrid vehicle and the hybrid vehicle itself, including a closed upper grille structure and an open lower grille structure. Inside the lower grille structure are arranged a condenser, a transmission oil cooler, a low-temperature radiator, a high-temperature radiator, and a cooling fan. The condenser is located at the front end near the lower grille structure. The transmission oil cooler and the low-temperature radiator are arranged side-by-side at the rear end of the condenser, with the low-temperature radiator located at the bottom of the transmission oil cooler and at least partially directly facing the opening of the lower grille structure. The high-temperature radiator and the cooling fan are arranged sequentially at the rear ends of the transmission oil cooler and the low-temperature radiator. This invention ensures that all components of the cooling module fulfill their functions, guaranteeing that the air conditioning and cooling performance meet the required specifications. Furthermore, it successfully develops the first hybrid vehicle with an electrified styling, providing platform development experience for the thermal management development of other vehicle models.

Description

Technical Field

[0001] This invention relates to the field of hybrid vehicle structural technology, specifically a thermal management system for hybrid vehicles. Background Technology

[0002] Existing hybrid vehicles have an overall exterior structure that is not significantly different from that of gasoline vehicles. The applicant has developed the first hybrid model with an electrified styling, specifically referencing the closed front grille structure of electric sedans as the front design of this hybrid vehicle. However, this front design will inevitably have an adverse impact on the thermal management system, thus requiring further improvement of the thermal management system for hybrid vehicles based on this design concept. Summary of the Invention

[0003] Technical problems to be solved

[0004] The purpose of this invention is to overcome the shortcomings of the prior art and provide a thermal management system for hybrid vehicles.

[0005] Technical solution

[0006] To achieve the above objectives, the present invention provides the following technical solution: a thermal management system for a hybrid vehicle, comprising a closed upper grille structure and a lower grille structure with an opening;

[0007] The lower grille structure is equipped with a condenser, a gearbox oil cooler, a low-temperature radiator, a high-temperature radiator, and a cooling fan.

[0008] The condenser is located at the very front end of the structure near the lower grille. 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 is at least partially directly opposite the opening of the lower grille structure. The high-temperature radiator and the cooling fan are arranged sequentially at the rear ends of the transmission oil cooler and the low-temperature radiator.

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

[0010] As mentioned 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 allow the opening of the lower grille structure to be directly opposite the bottom of the low-temperature radiator.

[0012] The aforementioned staggered space reserved at the bottom of the condenser is between 70mm and 90mm in height.

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

[0014] The aforementioned outlet oil temperature boundary value for the transmission oil cooler is 90℃, and the outlet water temperature boundary value for the low-temperature radiator is 65℃.

[0015] The top and bottom of the high-temperature radiator are sealed at the external connection points.

[0016] A hybrid vehicle employs the aforementioned thermal management system for hybrid vehicles.

[0017] As mentioned above, the upper part of the front face structure of this hybrid vehicle is closed, while the lower part has a grille opening structure, presenting the front face style of an electric sedan.

[0018] Beneficial effects:

[0019] Compared with existing technologies, this hybrid vehicle thermal management system has the following advantages:

[0020] This invention rationally arranges the components of the thermal management system into a four-layer structure. Considering the low-temperature cooling performance of hybrid vehicle systems (MCU / CDU / engine intercooler) and accommodating the platform-based development of the cooling module, it increases the airflow of the low-temperature radiator and reduces the intake air temperature. On the one hand, this ensures that all components of the cooling module fulfill their functions, guaranteeing that the air conditioning and cooling performance meet the required specifications. On the other hand, it successfully developed the first hybrid vehicle with an electrified styling, providing platform development experience for the thermal management development of other vehicle models.

[0021] Other advantages, objectives and features of the invention will be set forth in part in the description which follows, and in part will be apparent to those skilled in the art from the following examination or study, or may be learned from the practice of the invention. Attached Figure Description

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

[0023] Figure 2 This is a front view of the hybrid vehicle thermal management system of the present invention. Detailed Implementation

[0024] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort 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 for 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 lower grille structure is equipped with a condenser 1, a gearbox 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 very front end near the lower grille structure. The transmission oil cooler 2 and the low-temperature radiator 3 are arranged side-by-side at the rear end of the condenser 1. The low-temperature radiator 3 is located at the bottom of the transmission oil cooler 2, and at least part of the low-temperature radiator 3 is directly opposite the opening 5 of the lower grille structure; see details below. Figure 1 As shown, a misalignment space is reserved at the bottom of the condenser to allow the opening 5 of the lower grille structure to directly face 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 its own bottom Z-axis height. Therefore, in order to ensure the condenser performance 1, the traditional 12mm thickness is increased to at least 16mm.

[0029] The opening 5 of the lower grille structure is located at the bottom of the lower grille 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 volume and meets the air intake requirements of the subcooling zone of the condenser 1.

[0031] The high-temperature radiator 4 and the cooling fan 6 are arranged sequentially at the rear end of the gearbox oil cooler 2 and the low-temperature radiator 3.

[0032] Considering the reduction in overall cooling module airflow, worsening flow field, and harsh idling conditions, the power of cooling fan 6 has been increased from the traditional 450W to at least 1000W.

[0033] Overall, the layout of the vehicle body remains largely unchanged, so no modifications are needed for related components. Prioritizing air conditioning performance, the condenser 1 is placed at the very front, on the first layer. The transmission oil cooler 2 and the low-temperature radiator 3 are placed on the second layer. Considering that the outlet oil temperature threshold for the transmission oil cooler 2 is 90°C, and the outlet coolant temperature threshold for the low-temperature radiator 3 is 65°C, placing the low-temperature radiator 3 at the bottom facilitates airflow, while the transmission oil cooler 2 is placed at the top. The high-temperature radiator 4 is placed on the third layer, and the cooling fan 6 is placed on the fourth layer.

[0034] It should be noted that in this document, the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used solely for the convenience of describing the invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the invention. The terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. Furthermore, unless otherwise explicitly specified and limited, the terms "fixed," "installed," "connected," and "linked" should be interpreted broadly. 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; "linked" can be a direct connection, an indirect connection through an intermediate medium, or a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0035] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which 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 openings; The lower grille structure is equipped with a condenser, a gearbox oil cooler, a low-temperature radiator, a high-temperature radiator, and a cooling fan. The condenser is located at the very front end of the structure near the lower grille. 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 is at least partially directly opposite the opening of the lower grille structure. The high-temperature radiator and the cooling fan are arranged sequentially at the rear ends of the transmission oil cooler and the low-temperature radiator. The opening of the lower grille structure is located at the bottom of the lower grille structure; A misalignment space is reserved at the bottom of the condenser to allow the opening of the lower grille structure to be directly opposite the bottom of the low-temperature radiator.

2. The thermal management system for a hybrid vehicle according to claim 1, 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%.

3. The thermal management system for a hybrid vehicle according to claim 2, characterized in that: The height of the staggered space reserved at the bottom of the condenser is between 70mm and 90mm.

4. The thermal management system for a hybrid vehicle according to claim 3, characterized in that: The cooling fan should have a power of at least 1000W.

5. A thermal management system for a hybrid vehicle according to claim 4, 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℃.

6. A thermal management system for a hybrid vehicle according to claim 5, characterized in that: The top and bottom of the high-temperature radiator are sealed at the external connection points.

7. A hybrid vehicle, characterized in that, The thermal management system of a hybrid vehicle as described in any one of claims 1-6 is adopted.

8. A hybrid vehicle according to claim 7, characterized in that: The hybrid vehicle's front fascia is closed at the top and features a grille opening at the bottom, giving it the look of an electric sedan.

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