Comprehensive thermal management system for electric drive and power generation system of hybrid tractor

Abstract

The utility model relates to the field of new energy automobiles, in particular to a comprehensive thermal management system for an electric drive and power generation system of a hybrid tractor, which comprises a range extender, a battery and a drive motor which are sequentially arranged in a frame. A first air cooling loop is arranged on the outer side of the range extender; a liquid cooling loop is arranged on the outer side of the battery; a second air cooling loop is arranged on the outer side of the driving motor; and the first air-cooling cooling loop, the liquid-cooling cooling loop and the second air-cooling cooling loop respectively adopt a double-circulation cooling structure. The beneficial effects of the utility model are that the first air cooling loop, the liquid cooling loop and the second air cooling loop are respectively and correspondingly arranged at the outer sides of the range extender, the battery and the driving motor, and a double-circulation cooling structure is adopted, so that the range extender, the battery and the driving motor can be respectively cooled in a split manner, are independent from each other and do not interfere with each other; the heat dissipation efficiency is higher, and energy conservation and consumption reduction are realized to a greater extent.

Description

Technical Field

[0001] The utility model relates to the field of new energy vehicles, and in particular to an integrated thermal management system for an electric drive and power generation system of a hybrid tractor. Background Art

[0002] Energy crisis and environmental pollution have become the focus of global attention. Against the backdrop of energy conservation and emission reduction, the development of new energy vehicles is an irresistible trend. In some mining areas, extended-range hybrid tractors are very popular due to road rights and pure electric range.

[0003] Due to the limited layout of the entire vehicle, the radiators of the drive motor, range extender and its control system are conventionally arranged on both sides of the frame of the extended-range hybrid commercial vehicle. However, they are seriously affected by the heat dissipation of the range extender and the heat radiation of exhaust emissions. The wind temperature at the front end of the radiator can reach as high as 90°C, which cannot meet the heat dissipation requirements of the drive motor and causes serious heat radiation to the surrounding components of the radiator.

[0004] The conventional drive motor, range extender and its control system thermal management system connects the components that need heat dissipation in series according to the required temperature, but the engine and its control system work cyclically. During the pure electric driving stage, the energy consumption of the whole vehicle in the series circuit is relatively high. Utility Model Content

[0005] In order to overcome the above-mentioned shortcomings, the utility model provides a technical solution that can solve the above-mentioned problems.

[0006] An integrated thermal management system for an electric drive and power generation system of a hybrid tractor, comprising a range extender, a battery, and a drive motor sequentially arranged in a vehicle frame;

[0007] A first air-cooling cooling circuit is arranged on the outer side of the range extender;

[0008] A liquid cooling circuit is provided on the outside of the battery;

[0009] A second air-cooling circuit is provided on the outer side of the drive motor;

[0010] The first air-cooled cooling circuit, the liquid-cooled cooling circuit, and the second air-cooled cooling circuit all adopt a double-circulation cooling structure.

[0011] As a further solution of the utility model: the first air-cooled cooling circuit includes two first radiators, the first radiators are respectively installed on the inner side of the vehicle grille, the outer side of the range extender is matched with the frame to form two first air ducts, and the first radiators are respectively connected to the first air ducts.

[0012] As a further solution of the utility model: the liquid cooling circuit includes a water tank filled with fast cooling liquid, the water tank is installed on the front side of the frame, two cooling pipe loops are connected to the outside of the water tank, a water pump is arranged inside the water tank near the cooling pipe loops, the cooling pipe loops are respectively spirally arranged on the outside of the battery, and semiconductor thermostats are respectively arranged inside the two cooling pipe loops.

[0013] As a further solution of the utility model: the second air-cooling cooling circuit includes a second air duct formed by matching the upper end of the drive motor with the frame, and a second radiator is arranged on one side of the second air duct close to the battery.

[0014] As a further solution of the utility model: a second radiator is further provided at the lower end of the driving motor, and a cooling fin is provided at the outer end of the second radiator.

[0015] Compared with the prior art, the beneficial effects of the utility model are as follows: by respectively arranging a first air-cooling cooling circuit, a liquid-cooling cooling circuit, and a second air-cooling cooling circuit on the outsides of the range extender, the battery, and the drive motor, and adopting a dual-circulation cooling structure, the range extender, the battery, and the drive motor can be cooled separately, which are independent of each other and do not interfere with each other, and the heat dissipation efficiency is higher, thereby achieving energy saving and consumption reduction to a greater extent.

[0016] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in this embodiment or the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0018] Figure 1 It is a structural schematic diagram of the utility model.

[0019] Figure 2 It is a structural schematic diagram of the first air-cooled cooling circuit.

[0020] As shown in the figure: 1. range extender; 2. battery; 3. drive motor; 4. first radiator; 5. first air duct; 6. water tank; 7. cooling pipe loop; 8. water pump; 9. semiconductor thermostat; 10. second air duct; 11. second radiator; 12. cooling fins. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0022] In the description of the present invention, it should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do 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.

[0023] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0024] In the embodiments of the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like 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 a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between 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.

[0025] See also Figure 1-2 , a comprehensive thermal management system for an electric drive and power generation system of a hybrid tractor, comprising a range extender 1, a battery 2, and a drive motor 3 sequentially arranged in a vehicle frame;

[0026] A first air-cooling cooling circuit is provided on the outer side of the range extender 1;

[0027] A liquid cooling circuit is provided on the outside of the battery 2;

[0028] A second air-cooling circuit is provided on the outer side of the drive motor 3;

[0029] The first air-cooled cooling circuit, the liquid-cooled cooling circuit, and the second air-cooled cooling circuit all adopt a double-circulation cooling structure.

[0030] By respectively arranging a first air-cooling cooling circuit, a liquid-cooling cooling circuit, and a second air-cooling cooling circuit on the outside of the range extender 1, the battery 2, and the drive motor 3, and adopting a double-circulation cooling structure, the range extender 1, the battery 2, and the drive motor 3 can be cooled separately.

[0031] As a further solution of the utility model: the first air-cooled cooling circuit includes two first radiators 4, which are respectively installed on the inner side of the vehicle grille, and the outer side of the range extender 1 is matched with the frame to form two first air ducts 5, and the first radiators 4 are respectively connected to the first air ducts 5.

[0032] When the range extender 1 is working, the heat is dissipated through the first air-cooling cooling circuit. The wind transmitted into the grille when the vehicle is running is transmitted to the first air duct 5 through the first radiator 4, so that the heat of the range extender 1 is achieved through the dual air ducts. Since the extended-range hybrid vehicle is driven purely electrically most of the time, only the wind transmitted into the grille when the vehicle is running is used. The dual air ducts under the action of the first radiator 4 can dissipate heat for the range extender 1, thereby achieving energy saving and consumption reduction to a greater extent.

[0033] As a further solution of the utility model: the liquid cooling circuit includes a water tank 6 filled with fast cooling liquid, the water tank 6 is installed on the front side of the frame, the water tank 6 is connected to the outside with two cooling pipe loops 7, a water pump 8 is arranged inside the water tank 6 near the cooling pipe loops 7, the cooling pipe loops 7 are respectively spirally arranged on the outside of the battery 2, and semiconductor thermostats 9 are respectively arranged inside the two cooling pipe loops 7.

[0034] By installing a coolant that can quickly cool down and heat up in the water tank 6, the water pump 8 circulates the coolant in the cooling pipe loop 7. By cooperating with the temperature control system in the battery 1, the semiconductor thermostat 9 is used to quickly cool down or heat the coolant in the cooling pipe loop 7, so that the temperature of the battery reaches the most suitable working temperature, thereby improving energy utilization efficiency.

[0035] As a further solution of the utility model: the second air-cooling cooling circuit includes a second air duct 10 formed to match the upper end of the drive motor 3 and the frame, and a second radiator 11 is arranged on one side of the second air duct 10 close to the battery 2.

[0036] When the extended-range hybrid vehicle is running, the drive motor 3 needs to be in the best working state all the time. Therefore, when the vehicle is running, the second radiator 11 in the second air duct 10 transmits the wind flowing through the chassis to the second air duct 10 to achieve heat dissipation on the upper end of the drive motor 3.

[0037] As a further solution of the utility model: a second radiator 11 is further provided at the lower end of the driving motor 3 , and a heat dissipation fin 12 is provided at the outer end of the second radiator 11 .

[0038] At the same time, the second radiator 11 located at the lower end of the driving motor 3 can directly dissipate the heat from the lower end of the driving motor 3 , and the heat dissipation fins 12 can help the second radiator 11 to exchange heat with the external environment.

[0039] It should also be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the statement "including a ..." do not exclude the presence of other identical elements in the process, method, article or device including the elements.

[0040] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present application. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A comprehensive thermal management system for electric drive and power generation systems of a hybrid tractor, characterized by: It includes a range extender, a battery, and a drive motor which are sequentially arranged in the vehicle frame; A first air-cooling cooling circuit is arranged on the outer side of the range extender; A liquid cooling circuit is provided on the outside of the battery; A second air-cooling circuit is provided on the outer side of the drive motor; The first air-cooled cooling circuit, the liquid-cooled cooling circuit, and the second air-cooled cooling circuit all adopt a double-circulation cooling structure.

2. The integrated thermal management system for electric drive and power generation system of a hybrid tractor according to claim 1, characterized in that: The first air-cooling cooling circuit includes two first radiators, which are respectively installed on the inner side of the vehicle grille. The outer side of the range extender is matched with the vehicle frame to form two first air ducts, and the first radiators are respectively connected to the first air ducts.

3. The integrated thermal management system for electric drive and power generation system of a hybrid tractor according to claim 1, characterized in that: The liquid cooling circuit includes a water tank filled with fast cooling liquid, which is installed on the front side of the frame. The water tank is connected to two cooling pipe loops outwardly. A water pump is arranged inside the water tank near the cooling pipe loops. The cooling pipe loops are respectively spirally arranged on the outside of the battery, and semiconductor thermostats are respectively arranged inside the two cooling pipe loops.

4. The integrated thermal management system for electric drive and power generation system of a hybrid tractor according to claim 1, characterized in that: The second air-cooling circuit includes a second air duct formed to match the upper end of the driving motor and the frame, and a second radiator is arranged on one side of the second air duct close to the battery.

5. The integrated thermal management system for electric drive and power generation system of a hybrid tractor according to claim 4, characterized in that: A second radiator is also arranged at the lower end of the driving motor, and a heat dissipation fin is arranged at the outer end of the second radiator.

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