A front end cooling module for a hybrid vehicle

Abstract

The utility model relates to the field of automobile, concretely relates to a hybrid car front end cooling module. Specifically include big low temperature radiator, small low temperature radiator, connecting hose, condenser, high temperature radiator and electronic fan, big low temperature radiator is arranged in the first row of cooling module, and is in the front of condenser, small low temperature radiator is arranged in the front of condenser, and small low temperature radiator and big low temperature radiator are connected through connecting hose and are connected in series with two radiators, and low temperature radiating loop cooling liquid first flows through small low temperature radiator and then flows through big low temperature radiator, and high temperature radiator is arranged in the third row position, and the electronic fan arranged in the last end provides the air intake power for whole cooling module. The utility model can effectively solve the problem that hybrid car is under high temperature environment, and the water temperature of electric drive system is high and the temperature of engine intake is high, and the performance and energy consumption of air conditioning system are considered simultaneously.

Description

Technical Field

[0001] This utility model relates to the automotive field, specifically to a front-end cooling module for hybrid vehicles. Background Technology

[0002] In recent years, major economies around the world have been tightening vehicle emission standards to reduce air pollution and address climate change. The shift to new energy vehicles is an inevitable trend. However, hybrid vehicles, compared to traditional gasoline vehicles, increase the heat dissipation requirements of the electric drive system and battery pack. The heat load of the front-end cooling module is significantly greater than that of traditional gasoline vehicles, leading to a more complex layout for the front-end cooling module. Furthermore, different layout schemes for the front-end cooling module have a significant impact on the cooling water temperature of the electric drive system and the workload of the air conditioning system.

[0003] Currently, there are two common layout schemes for the front-end cooling module of hybrid vehicles;

[0004] Arrangement A: A single low-temperature radiator is placed at the front (to cool the electric drive system and engine intake air simultaneously), the condenser is placed in the middle (to cool the air conditioning system), and the high-temperature radiator (to cool the engine) is placed at the rear. The disadvantage of this arrangement is that, under high temperature and heavy load conditions of 49℃, the condenser intake air temperature rises by up to 15℃, which can easily trigger the air conditioning high-pressure protection, resulting in poor air conditioning performance and high energy consumption.

[0005] Arrangement Scheme B: The condenser is placed at the front (to dissipate heat from the air conditioning system), a single low-temperature radiator is placed in the middle (to dissipate heat from both the electric drive system and the engine intake air), and a high-temperature radiator (to dissipate heat from the engine) is placed at the rear. The disadvantage of this arrangement is that, in a high-temperature environment of 49℃, the water temperature of the electric drive system at the highest vehicle speed can reach 72℃ (target ≤ 65℃) or the engine intake air temperature can reach 75℃ (target ≤ 68℃).

[0006] A single low-temperature radiator simultaneously cools both the electric drive system and the engine intake system, achieving a heat dissipation of up to 20kW under high-temperature ramp conditions. Traditional layout A places the single low-temperature radiator in front of the condenser, significantly increasing the condenser's intake air temperature (up to 15°C under ramp conditions), leading to a decrease in air conditioning system performance and even triggering high-pressure protection. Traditional layout B places the single low-temperature radiator behind the condenser. While this offers the optimal performance improvement for the air conditioning system, the condenser's heat dissipation can still reach 12kW in high-temperature environments, increasing the low-temperature radiator's intake air temperature by up to 9°C, causing both the electric drive system's coolant temperature and the engine's intake air temperature to exceed the limit. Utility Model Content

[0007] To address the aforementioned problems, this utility model proposes a front-end cooling module for hybrid vehicles. A large low-temperature radiator is positioned at the very front, with a condenser (for cooling the air conditioning system) and a small low-temperature radiator arranged side-by-side in the middle. A high-temperature radiator (for cooling the engine) is located at the rear. The small and large low-temperature radiators are connected in series via piping (simultaneously cooling the electric drive system and engine intake air). The coolant in the low-temperature cooling circuit first passes through the small low-temperature radiator (receiving 40% of the heat dissipation) and then through the large low-temperature radiator (receiving 60% of the heat dissipation). The specific technical solution is as follows:

[0008] A hybrid vehicle front-end cooling module includes: a large low-temperature radiator, a small low-temperature radiator, a connecting hose, a condenser, a high-temperature radiator, and an electric fan. The large low-temperature radiator is arranged in the front row of the cooling module and directly in front of the condenser. The small low-temperature radiator is arranged directly below the condenser. The small low-temperature radiator and the large low-temperature radiator are connected in series by a connecting hose. The coolant in the low-temperature cooling circuit first flows through the small low-temperature radiator and then through the large low-temperature radiator. The high-temperature radiator is arranged in the third row. The electric fan arranged at the rear provides airflow power for the entire cooling module.

[0009] This invention utilizes a combination of a large and a small low-temperature radiator to distribute heat dissipation. Furthermore, only the large low-temperature radiator is positioned directly in front of the condenser. Under high-temperature, high-load conditions, the condenser intake air temperature rise can be reduced by 40%, preventing the air conditioning system from triggering high-pressure protection and significantly improving air conditioning performance. Simultaneously, because both the large and small low-temperature radiators are positioned at the forefront of the airflow, the intake air temperature is low, effectively solving the problems of high water temperature in the electric drive system and high engine intake air temperature in hybrid vehicles under high-temperature environments, while also considering the performance and energy consumption of the air conditioning system. Attached Figure Description

[0010] Figure 1 This embodiment is shown in the structural diagram.

[0011] Attached reference numerals: 1-Large low-temperature radiator, 2-Small low-temperature radiator, 3-Connecting hose, 4-Condenser, 5-High-temperature radiator, 6-Electric fan. Detailed Implementation

[0012] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0013] A hybrid vehicle front-end cooling module includes: a large low-temperature radiator 1, a small low-temperature radiator 2, a connecting hose 3, a condenser 4, a high-temperature radiator 5, and an electric fan 6.

[0014] The large low-temperature radiator 1 is arranged in the front row of the cooling module and directly in front of the condenser 4. The small low-temperature radiator 2 is arranged directly below the condenser 4. The small low-temperature radiator 2 and the large low-temperature radiator 1 are connected in series by a connecting hose 3. The coolant in the low-temperature heat dissipation circuit first flows through the small low-temperature radiator 2 and then through the large low-temperature radiator 1. The high-temperature radiator 5 is arranged in the third row. The electric fan 6 arranged at the rear provides airflow power for the entire cooling module.

[0015] In the low-temperature cooling circuit, the coolant first passes through the small low-temperature radiator 2 (accounting for 40% of the heat dissipation), and then through the large low-temperature radiator 1 (accounting for 60% of the heat dissipation). By distributing the heat dissipation between the two low-temperature radiators, compared to arrangement A, the air heated by the small low-temperature radiator 2 does not pass through the condenser 4 (having no impact on the condenser intake air temperature). Under high-temperature and high-load conditions, the condenser intake air temperature rise can be reduced to 9°C, preventing the air conditioning system from triggering high-pressure protection, and significantly improving air conditioning performance. Compared to arrangement B, under a high-temperature environment of 49°C, the electric drive system coolant temperature can be controlled at 63°C at the highest vehicle speed (target ≤65°C), or the engine intake air temperature can be controlled at 66°C (target ≤68°C).

[0016] The preferred embodiments of this patent have been described in detail above. However, this patent is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of this patent.

Claims

1. A hybrid vehicle front end cooling module, characterized by: It includes: Large low temperature radiator, small low temperature radiator, connecting hose, condenser, high temperature radiator and electronic fan, the large low temperature radiator is arranged in the front row of the cooling module, and is directly in front of the condenser, the small low temperature radiator is arranged directly below the condenser, the connecting hose is arranged between the large low temperature radiator and the small low temperature radiator to connect the two radiators in series, the low temperature radiator cooling liquid flows through the small low temperature radiator and then flows through the large low temperature radiator, the high temperature radiator is arranged in the third row position, and the electronic fan arranged at the last end provides air inlet power for the whole cooling module.

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