Engine assembly, hybrid vehicle thermal management system and hybrid vehicle

Abstract

The utility model provides an engine assembly, a hybrid vehicle thermal management system and a hybrid vehicle. The engine assembly comprises a cooling fan, an engine body and a fan motor. The engine body is selectively in transmission connection with the cooling fan through a first one-way bearing. The fan motor is selectively in transmission connection with the cooling fan through a second one-way bearing. According to the scheme, after the engine body stops, the fan motor selectively drives the cooling fan to rotate through the second one-way bearing capable of achieving transmission, the normal ventilation and heat dissipation functions of the cooling fan are guaranteed, and therefore normal operation of the vehicle is prevented from being affected. Therefore, the problems that after the engine stops, power cannot be provided for the cooling fan, the engine is likely to be overheated, and then normal operation of the vehicle is affected can be solved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of vehicles, in particular to an engine assembly, a hybrid vehicle thermal management system and a hybrid vehicle. BACKGROUND

[0002] In the related art, the cooling fan of a vehicle is driven by an engine. Specifically, when the engine is running, the output shaft of the engine drives the fan blades of the cooling fan to rotate.

[0003] During the driving of the vehicle, the engine cannot provide power to the cooling fan after the engine stops due to failure or other reasons, which can easily lead to overheating of the engine and affect the normal operation of the vehicle. UTILITY MODEL CONTENT

[0004] The present application provides an engine assembly, a hybrid vehicle thermal management system and a hybrid vehicle, which can solve the problem that the engine cannot provide power to the cooling fan after the engine stops, which can easily lead to overheating of the engine and affect the normal operation of the vehicle.

[0005] In a first aspect, the present application provides an engine assembly, comprising a cooling fan, an engine body and a fan motor;

[0006] The engine body is selectively connected in transmission with the cooling fan through a first one-way bearing;

[0007] The fan motor is selectively connected in transmission with the cooling fan through a second one-way bearing.

[0008] The scheme provided by the embodiments of the present application can selectively drive the cooling fan to rotate through the second one-way bearing capable of transmission when the engine body stops, so as to ensure the normal ventilation and heat dissipation function of the cooling fan, thereby avoiding affecting the normal operation of the vehicle. It can be seen that the present application can solve the problem that the engine cannot provide power to the cooling fan after the engine stops, which can easily lead to overheating of the engine and affect the normal operation of the vehicle.

[0009] In combination with the first aspect, in some possible implementation manners, the cooling fan comprises a transmission shaft and fan blades, the transmission shaft is rotatably arranged at the front end of the engine body, and the cooling fan is connected to one end of the transmission shaft away from the engine body;

[0010] The first one-way bearing and the second one-way bearing are both mounted on the transmission shaft, and the transmission direction of the first one-way bearing is opposite to the transmission direction of the second one-way bearing.

[0011] With reference to the first aspect and the above implementation manners, in some possible implementation manners, the engine assembly further includes a first transmission mechanism and a second transmission mechanism, the first transmission mechanism is connected with an engine output shaft of the engine body and the first one-way bearing respectively, so that the engine body is selectively connected with the cooling fan through the first one-way bearing;

[0012] The second transmission mechanism is connected with an output shaft of the fan motor and the second one-way bearing respectively, so that the fan motor is selectively connected with the cooling fan through the second one-way bearing.

[0013] With reference to the first aspect and the above implementation manners, in some possible implementation manners, the first transmission mechanism includes a first belt pulley, a first belt and a first transmission belt pulley, the first belt pulley is connected with the engine output shaft, the first transmission belt pulley is connected with the first one-way bearing, and the first belt is sleeved on the first belt pulley and the first transmission belt pulley;

[0014] The second transmission mechanism includes a second belt pulley, a second belt and a second transmission belt pulley, the second belt pulley is connected with the output shaft of the fan motor, the second transmission belt pulley is connected with the second one-way bearing, and the second belt is sleeved on the second belt pulley and the second transmission belt pulley.

[0015] With reference to the first aspect and the above implementation manners, in some possible implementation manners, the second transmission mechanism further includes a tension pulley;

[0016] The second belt is sleeved on the tension pulley, the tension pulley and the fan motor are fixedly connected on a fixed support, and the fixed support is fixedly connected on the outside of the engine body.

[0017] In a second aspect, the application further provides a hybrid vehicle thermal management system, including a storage battery, a vehicle controller, a driving motor, a power battery, a radiator and the engine assembly of any one of the above first aspect.

[0018] The engine body has a first cooling water jacket;

[0019] The storage battery is electrically connected with the fan motor;

[0020] The vehicle controller is electrically connected with the engine body, the fan motor and the storage battery;

[0021] The driving motor is electrically connected with the vehicle controller;

[0022] The power battery is electrically connected with the storage battery and the driving motor; at least one of the power battery, the fan motor, the driving motor and the vehicle controller has a second cooling water jacket; the radiator corresponds to the cooling fan, and the radiator is connected with the cooling water jacket through a pipeline, and the cooling water jacket includes the first cooling water jacket and the second cooling water jacket.

[0023] With reference to the second aspect, in some possible implementation manners, the hybrid vehicle thermal management system further includes an electronic thermostat and an electronic cooling water pump.

[0024] The electronic thermostat is electrically connected with the storage battery and the vehicle controller respectively, and is arranged on the pipeline between the cooling water jacket and the radiator.

[0025] The electronic cooling water pump is electrically connected with the storage battery and the vehicle controller respectively, and is arranged on the pipeline between the cooling water jacket and the radiator.

[0026] With reference to the second aspect and the above implementation manners, in some possible implementation manners, the cooling water jacket further includes a third cooling water jacket.

[0027] The hybrid vehicle thermal management system further includes a retarder, and the retarder has the third cooling water jacket.

[0028] In a third aspect, the present application also provides a hybrid vehicle, including the hybrid vehicle thermal management system according to any one of the second aspect.

[0029] With reference to the third aspect, in some possible implementation manners, the hybrid vehicle further includes:

[0030] An electric air compressor, which is electrically connected with the vehicle controller and the power battery; and / or

[0031] An electric steering pump, which is electrically connected with the vehicle controller and the power battery; and / or

[0032] An electric compressor, which is electrically connected with the vehicle controller and the power battery.

[0033] Additional aspects and advantages of the present application will be made apparent from the following description. BRIEF DESCRIPTION OF DRAWINGS

[0034] Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading and understanding the following detailed description. The accompanying drawings are only for purposes of illustration and are not to be construed as limiting. Moreover, in the drawings, like reference numerals designate similar or equivalent components throughout the several views. In the drawings:

[0035] Figure 1 is a principle schematic diagram of an engine assembly provided by an embodiment of the present application;

[0036] Figure 2 is a structural schematic diagram of an engine assembly provided by an embodiment of the present application;

[0037] Figure 3 is a structural schematic diagram of a fixing support for installing a tension pulley provided by an embodiment of the present application;

[0038] Figure 4 is a principle schematic diagram of a thermal management system of a hybrid vehicle provided by an embodiment of the present application;

[0039] Figure 5 is a principle schematic diagram of another thermal management system of a hybrid vehicle provided by an embodiment of the present application;

[0040] Figure 6 is a principle schematic diagram of a hybrid vehicle provided by an embodiment of the present application.

[0041] The following is a description of the reference numerals in the drawings:

[0042] 1 - engine assembly;

[0043] 11 - engine body; 111 - engine output shaft; 112 - fixing support;

[0044] 12 - cooling fan; 121 - transmission shaft; 122 - fan blade;

[0045] 13 - first transmission mechanism; 131 - first pulley; 132 - first belt; 133 - first transmission pulley;

[0046] 14 - fan motor;

[0047] 15 - second transmission mechanism; 151 - second pulley; 152 - second belt; 153 - second transmission pulley; 154 - tension pulley;

[0048] 16 - vehicle controller;

[0049] 2 - storage battery;

[0050] 3 - drive motor;

[0051] 4 - power battery;

[0052] 51 - electronic thermostat; 52 - electronic cooling water pump;

[0053] 6 - retarder;

[0054] 7 - electric air compressor;

[0055] 8 - Electronic steering pump;

[0056] 9 - Electric compressor. DETAILED DESCRIPTION

[0057] The embodiments of the present application will be described in detail with reference to the drawings. The following embodiments are only used to more clearly illustrate the technical scheme of the present application, and therefore only serve as examples, but cannot be used to limit the protection scope of the present application.

[0058] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs; the terminology used in the specification herein is for describing particular embodiments only and is not intended to be limiting of the application; the use of the terms "including", "comprising" and "having" and any variations thereof herein are intended to cover the inclusions of the elements recited but not to the exclusion of any other elements. The terms "including", "comprising" and "having" and any variations thereof are intended to cover the inclusions of elements recited but not to the exclusion of any other elements.

[0059] Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the application. The appearances of the phrase in various places in the specification are not necessarily all referring to the same embodiment, nor are they necessarily mutually exclusive of other embodiments. It is expressly understood that the embodiments described herein are merely examples from among a great variety of embodiments that can be claimed or otherwise identified as applying to other embodiments.

[0060] In the description of the embodiments of the present application, the technical terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the embodiments of the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the embodiments of the present application.

[0061] In the description of the embodiments of the present application, unless otherwise explicitly specified and limited, the technical terms "mounting", "connecting", "connecting", "fixing", and the like should be understood in a broad sense, for example, can be fixedly connected, or can be detachably connected, or can be integrated; can be mechanically connected, or can be electrically connected; can be directly connected, or can be indirectly connected through an intermediate medium; can be the internal communication of two elements or the interaction relationship between two elements. For those skilled in the art, the specific meaning of the above terms in the embodiments of the present application can be understood according to the specific circumstances.

[0062] In the description of the embodiments of the present application, the technical terms "first", "second", etc. are only used to distinguish different objects, and cannot be understood as indicating or implying relative importance or implicitly indicating the number, specific order or primary and secondary relationship of the indicated technical features. In the description of the embodiments of the present application, the term "a plurality of" refers to two or more (including two), and similarly, "a plurality of groups" refers to two or more groups (including two groups), and "a plurality of pieces" refers to two or more pieces (including two pieces).

[0063] In the description of the embodiments of the present application, the term "and / or" is only used to describe the association relationship of the associated objects, which means that there can be three relationships, for example, A and / or B, which can represent the three cases of A alone, A and B together, and B alone. In addition, the character " / " in this paper generally represents that the front and rear associated objects are in an "or" relationship.

[0064] The heat dissipation fan is an important component in the vehicle cooling system, which is used to blow away the hot air around the radiator of the vehicle cooling system by its own rotation, and introduce the cold air outside into the radiator, so as to help the radiator to dissipate the heat of the engine absorbed by the cooling liquid inside more efficiently, and ensure the engine to work normally in the appropriate temperature range.

[0065] In the related art, the heat dissipation fan of the vehicle is driven by the engine. Specifically, when the engine is running, the output shaft of the engine drives the fan blades of the heat dissipation fan to rotate.

[0066] In the process of driving the vehicle, the engine cannot provide power for the heat dissipation fan after the engine is stopped due to failure or other reasons, which is easy to cause the engine to overheat, and further affects the normal operation of the vehicle.

[0067] In order to solve the above technical problems, the present application provides an engine assembly, a hybrid vehicle thermal management system and a hybrid electric vehicle. The engine assembly, the hybrid vehicle thermal management system and the hybrid electric vehicle provided by the embodiments of the present application will be described in detail below with reference to the accompanying drawings of the specification.

[0068] First, please refer to Figure 1 The first aspect of the present application provides an engine assembly 1, which comprises a heat dissipation fan 12, an engine body 11 and a fan motor 14, the engine body 11 is selectively connected to the heat dissipation fan 12 through a first one-way bearing; the fan motor 14 is selectively connected to the heat dissipation fan 12 through a second one-way bearing.

[0069] The fan motor 14 can be fixedly arranged outside the engine body 11 by screwing, welding or the like. The fan motor 14 includes a fan motor body capable of converting electrical energy into mechanical energy for driving the cooling fan 12 and a fan motor controller for controlling the rotating speed of the fan motor body, which can have functions of overload protection, overcurrent protection, overvoltage protection and the like to prevent damage or accidents of the fan motor body. It should be noted that the scheme of the present application can also be applied to a traditional engine with a generator, in other words, the traditional engine with a generator can be modified according to the scheme, wherein the generator of the traditional engine can be removed and the fan motor 14 can be installed at the position of the original generator, so that the structure of the generator of the traditional engine can be directly replaced without changing the size of the traditional engine, thereby effectively saving the modification cost and workload.

[0070] The first one-way bearing and the second one-way bearing are both one-way bearings, and the one-way bearing includes a bearing outer ring, a bearing inner ring and a rolling element assembly (such as a roller or a wedge-shaped block) with an elastic element. The bearing outer ring has a limiting structure. Since the one-way bearing uses the rolling element assembly and the limiting structure of the outer ring to achieve one-way locking, the effect of one-way transmission can be achieved, that is, the locking between the bearing outer ring and the bearing inner ring in one direction can be achieved to transmit power, thereby achieving the effect of transmission. In the opposite direction, the bearing outer ring can rotate freely relative to the bearing inner ring. For the sake of convenience, the direction in which the one-way bearing can achieve the effect of transmission is defined as the transmission direction, and the direction in which it can idle is defined as the idling direction.

[0071] It should be noted that when the engine body 11 is working, the first one-way bearing can achieve transmission, and the engine body 11 can selectively drive the cooling fan 12 to rotate through the first one-way bearing.

[0072] When the engine body 11 is stopped due to failure or other reasons and cannot provide power to the cooling fan 12, the fan motor 14 works, the second one-way bearing can achieve transmission, and the fan motor 14 can selectively drive the cooling fan 12 to rotate through the second one-way bearing, thereby ensuring the normal ventilation and cooling function of the cooling fan 12, and avoiding affecting the normal operation of the vehicle.

[0073] The scheme provided by the embodiment of the present application can selectively drive the cooling fan 12 to rotate through the second one-way bearing capable of achieving transmission when the engine body 11 is stopped, thereby ensuring the normal ventilation and cooling function of the cooling fan 12 and avoiding affecting the normal operation of the vehicle. It can be seen that the problem that the engine cannot provide power to the cooling fan 12 after the engine is stopped, which easily leads to overheating of the engine and affects the normal operation of the vehicle, can be solved by the present application.

[0074] In some embodiments, the heat dissipation fan 12 comprises a transmission shaft 121 rotatably arranged at the front end of the engine body 11, and the heat dissipation fan 12 is connected to the end of the transmission shaft 121 away from the engine body 11. The first one-way bearing and the second one-way bearing are both mounted on the transmission shaft 121, and the transmission directions of the first one-way bearing and the second one-way bearing are opposite.

[0075] In some embodiments, the heat dissipation fan 12 comprises a transmission shaft 121 rotatably arranged at the front end of the engine body 11, and the heat dissipation fan 12 is connected to the end of the transmission shaft 121 away from the engine body 11. The first one-way bearing and the second one-way bearing are both mounted on the transmission shaft 121, and the transmission directions of the first one-way bearing and the second one-way bearing are opposite.

[0076] The first one-way bearing and the second one-way bearing are mounted on the transmission shaft 121 in sequence. The transmission directions of the first one-way bearing and the second one-way bearing are opposite, for example, the transmission direction of the first one-way bearing can be set as clockwise, that is, when the outer ring of the bearing rotates clockwise, the inner ring of the bearing will rotate clockwise to realize the transmission effect, while when the inner ring of the bearing rotates counterclockwise, the inner ring will idle relative to the outer ring of the bearing and cannot transmit or can only transmit very small power. Similarly, the transmission direction of the second one-way bearing can be set as counterclockwise, and vice versa.

[0077] When the engine body 11 is working, the engine body 11 drives the heat dissipation fan 12, and the rotation direction of the fan blade 122 of the heat dissipation fan 12 corresponds to the transmission direction of the first one-way bearing and the idling direction of the second one-way bearing, that is, when the engine body 11 is working, the first one-way bearing can drive the transmission shaft 121 and the fan blade 122 to rotate forward, while the second one-way bearing idles. In this way, the fan blade 122 can be decoupled from the fan motor 14 while driving the transmission shaft 121 and the fan blade 122 to rotate forward, so that the engine body 11 can drive the first one-way bearing and the transmission shaft 121 to rotate, thereby driving the heat dissipation fan 12, effectively realizing the ventilation and heat dissipation function of the heat dissipation fan 12.

[0078] When the engine body 11 is stopped, the first transmission mechanism 13 stops working and no longer continues to drive the cooling fan 12, and the cooling fan 12 is driven by the fan motor 14. The rotating direction of the fan blade 122 of the cooling fan 12 corresponds to the transmission direction of the second one-way bearing and the idling direction of the first one-way bearing, that is, in the case that the engine body 11 does not work, the fan motor 14 can drive the transmission shaft 121 and the fan blade 122 to reverse through the second one-way bearing, and the first one-way bearing idles. In this way, the fan blade 122 can be decoupled from the engine body 11 while the transmission shaft 121 and the fan blade 122 are reversed, effectively ensuring the normal ventilation and cooling function of the cooling fan 12, thereby avoiding affecting the normal operation of the vehicle.

[0079] Compared with the decoupling mode achieved by using a clutch, the above-mentioned decoupling mode achieved by using a one-way bearing has the advantages of simple structure and low cost.

[0080] In some embodiments, the engine assembly 1 further comprises a first transmission mechanism 13 and a second transmission mechanism 15. The first transmission mechanism 13 is connected to the engine output shaft 111 of the engine body 11 and the first one-way bearing, respectively, so that the engine body 11 is selectively connected to the cooling fan 12 through the first one-way bearing. The second transmission mechanism 15 is connected to the output shaft of the fan motor 14 and the second one-way bearing, respectively, so that the fan motor 14 is selectively connected to the cooling fan 12 through the second one-way bearing.

[0081] It can be understood that the structure of the first transmission mechanism 13 and the second transmission mechanism 15 can be various, for example, it can be a belt transmission mechanism, a chain transmission mechanism, a gear transmission mechanism, a worm gear transmission mechanism, etc.

[0082] The engine body 11 is connected to the first one-way bearing through the first transmission mechanism 13. Specifically, the output end of the engine body 11 is connected to the input end of the first transmission mechanism 13, and the output end of the first transmission mechanism 13 is connected to the first one-way bearing. In this way, when the engine body 11 is running, the first one-way bearing can be driven by the first transmission mechanism 13, thereby driving the transmission shaft 121 and the fan blade 122 to rotate.

[0083] The fan motor 14 is connected to the second one-way bearing through the second transmission mechanism 15. Specifically, the output end of the fan motor 14 is connected to the input end of the second transmission mechanism 15, and the output end of the second transmission mechanism 15 is connected to the second one-way bearing. In this way, the fan motor 14 can drive the second one-way bearing through the second transmission mechanism 15, thereby driving the transmission shaft 121 and the fan blade 122 to rotate.

[0084] The scheme provided by the embodiment of the application can ensure that the cooling fan 12 has normal ventilation and heat dissipation function, so that the normal operation of the vehicle is avoided.

[0085] Referring to Figure 1 In some embodiments, the first transmission mechanism 13 can include a first belt pulley 131, a first belt 132 and a first transmission pulley 133, the first belt pulley 131 is connected with the engine output shaft 111, the first transmission pulley 133 is connected with the first one-way bearing, and the first belt 132 is sleeved on the first belt pulley 131 and the first transmission pulley 133. The second transmission mechanism 15 can include a second belt pulley 151, a second belt 152 and a second transmission pulley 153, the second belt pulley 151 is connected with the output shaft of the fan motor 14, the second transmission pulley 153 is connected with the second one-way bearing, and the second belt 152 is sleeved on the second belt pulley 151 and the second transmission pulley 153.

[0086] The first belt 132 can have various types of belts, for example, V-belt, multi-wedge belt, toothed belt, etc. The V-belt and the multi-wedge belt have high tensile strength and stability, and can bear large load, so they are widely used in vehicle engines. The designer can determine the appropriate type of belt according to the specific engine model and design requirements, and the embodiment of the application does not make specific limitation. Similarly, the second belt 152 can also have various types of belts, such as V-belt, multi-wedge belt, toothed belt, etc. Considering the characteristics of the fan motor 14, the designer pays more attention to the matching with the generator when selecting the first belt 132, so as to ensure efficient power transmission.

[0087] In actual application, for the first transmission mechanism 13, the first one-way bearing can be installed on the transmission shaft 121 first, and then the first transmission pulley 133 is installed on the first one-way bearing. Similarly, for the second transmission mechanism 15, the second one-way bearing can be installed on the transmission shaft 121 first, and then the second transmission pulley 153 is installed on the first one-way bearing.

[0088] When the engine body 11 is working, the engine output shaft 111 drives the first transmission pulley 133 through the first transmission mechanism 13, and the rotation direction of the first transmission pulley 133 corresponds to the driving direction of the first one-way bearing and the idling direction of the second one-way bearing, that is, when the engine body 11 is working, the first one-way bearing can drive the transmission shaft 121 to rotate in the positive direction, and the second one-way bearing idles, thereby realizing the decoupling of the fan blade 122 and the fan motor 14 while driving the fan blade to rotate in the positive direction. Therefore, the engine body 11 can drive the first one-way bearing and the transmission shaft 121 to rotate, thereby driving the cooling fan 12 and effectively realizing the ventilation and cooling function of the cooling fan 12.

[0089] When the engine body 11 is stopped, the first transmission mechanism 13 stops working and no longer drives the cooling fan 12. The output shaft of the fan motor 14 drives the second transmission pulley 153 through the second transmission mechanism 15, and the rotation direction of the second transmission pulley 153 corresponds to the driving direction of the second one-way bearing and the idling direction of the first one-way bearing. Therefore, the second one-way bearing and the transmission shaft 121 can be driven to rotate, thereby driving the cooling fan 12 and ensuring the normal ventilation and cooling function of the cooling fan 12, thereby avoiding affecting the normal operation of the vehicle.

[0090] It should be noted that when the engine body 11 is working, the rotation direction of the first transmission pulley 133 corresponds to the idling direction of the second one-way bearing. At this time, although the inner ring of the second one-way bearing theoretically idles relative to the outer ring, in the actual rotation process, considering the contact between the rolling elements and the inner and outer rings in the second one-way bearing, the resistance of the lubricant inside the bearing, manufacturing and assembly errors, the influence of environmental temperature, etc., the inner ring of the second one-way bearing will still generate a certain reaction force on the outer ring of the second one-way bearing while rotating with the transmission shaft 121. The reaction force generated by the second one-way bearing is greater than the resistance of the fan motor 14, so the second transmission pulley 153 of the second transmission mechanism 15 can be driven, and the fan motor 14 is reversed through the second transmission pulley 153, so that the fan motor 14 generates electricity.

[0091] When the engine body 11 is stopped, the first transmission mechanism 13 stops working, and the output shaft of the fan motor 14 drives the second transmission pulley 153 through the second transmission mechanism 15. The rotation direction of the second transmission pulley 153 corresponds to the idling direction of the first one-way bearing. When the first one-way bearing idles, the inner ring of the first one-way bearing will also generate a certain reaction force on the outer ring of the first one-way bearing while rotating with the transmission shaft 121. However, since the resistance of the engine is relatively large, the reaction force generated by the idling of the first one-way bearing is less than the resistance of the engine body 11, so the engine body 11 will not be reversed.

[0092] In the scheme provided in the application, in the case that the engine is working, the first pulley 131 connected with the engine output shaft 111 in the first transmission mechanism 13 can transmit the rotating motion of the engine output shaft 111 to the first transmission pulley 133 through the first belt 132, the first transmission pulley 133 drives the transmission shaft 121 to rotate, and then drives the cooling fan 12, so that the ventilation and cooling function of the cooling fan 12 is effectively realized.

[0093] In the embodiments of the application, the first one-way bearing and the second one-way bearing with opposite rotating directions are arranged on the transmission shaft 121, so that the engine body 11 and the cooling fan 12 work cooperatively, and the normal ventilation and cooling function of the cooling fan 12 is always maintained. In addition, due to the working characteristics of the one-way bearing, in the case that the engine body 11 is working, the fan motor 14 can be driven to reverse by the second transmission mechanism 15, so that the power generation function of the fan motor 14 is realized.

[0094] Referring to Figure 1 and Figure 2 In some embodiments, the second transmission mechanism 15 further comprises a tension pulley 154, and the second belt 152 is sleeved on the tension pulley 154. The tension pulley 154 and the fan motor 14 are both fixedly connected to the fixed support 112, and the fixed support 112 is fixedly connected to the outside of the engine body 11.

[0095] The tension pulley 154 is used to change the tension of the second belt 152, so as to ensure the stability and reliability of the second transmission mechanism 15. The fixed support 112 is fixedly connected to the outside of the engine body 11, and the tension pulley 154 and the fan motor 14 are both fixedly connected to the fixed support 112, that is, the tension pulley 154 and the fan motor 14 can be connected to the outside of the engine body 11 through the fixed support 112.

[0096] The fixed support 112 can provide a firm and reliable mounting basis for the tension pulley 154 and the fan motor 14, and also facilitates the maintenance and adjustment of the tension pulley 154 and the fan motor 14, so as to improve the working stability of the engine assembly 1.

[0097] The fixed support 112 can provide a firm and reliable mounting basis for the tension pulley 154 and the fan motor 14, and also facilitates the maintenance and adjustment of the tension pulley 154 and the fan motor 14, so as to improve the working stability of the engine assembly 1. Figure 3 As shown in FIG. 6, the fixed support 112 provided in the embodiments of the application is in the shape of C as a whole, and comprises a main body part 1121. The main body part 1121 is curved and has high strength and rigidity, so as to effectively resist bending deformation. The middle part of the main body part 1121 is fixedly connected to the engine body 11. In addition, since the two ends of the main body part 1121 are extended away from the engine body 11, mounting seats can be formed, which can facilitate the installation of engine accessories and improve the integration of the engine assembly 1.

[0098] The main body 1121 can be fixedly connected with the engine body 11 by screw connection, welding or the like. In addition, the main body 1121 is also provided with a support arm 1122 on the side close to the fan motor 14, and the fan motor 14 can be fixedly connected with the main body 1111 through the support arm 1122. Please continue to refer to Figure 3 , in order to better realize the adjustment of the tension force and the stable operation of the second transmission mechanism, the tensioner 154 can include an automatic adjustment tensioner 1541 and an auxiliary tensioner 1542 arranged on the fixed support 112. The automatic adjustment tensioner 1541 is movably arranged on the fixed support 112 and can move or rotate relative to the fixed support 112. Exemplarily, the automatic adjustment tensioner 1541 can include a tensioner body and a mounting portion fixedly connected with the tensioner body, and the tensioner body includes an axle and a wheel body mounted on the axle. The mounting portion is rotatably or slidably connected with the fixed support 112 and can drive the tensioner body to move or rotate relative to the fixed support 112, so as to realize the adjustment of the tension force of the second belt 152. The auxiliary tensioner 1542 also includes an axle and a wheel body mounted on the axle, and the axle is fixedly connected with the fixed support 112. The automatic adjustment tensioner 1541 realizes the automatic adjustment function through a spring or a hydraulic device, can detect the tension force of the second belt 152, and automatically adjusts the position thereof relative to the second belt 152 as needed, so as to effectively compensate the elongation of the second belt 152 due to wear, aging or temperature change. The auxiliary tensioner 1542 is arranged on the slack side of the second belt 152 and is used for assisting in tensioning the second belt 152, can provide stable support and guidance, and ensures that the second belt 152 maintains a correct path during operation, so as to prevent the second belt 152 from deviating. The cooperative action of the automatic adjustment tensioner 1541 and the auxiliary tensioner 1542 can ensure that the second belt 152 always maintains a proper tension force during the entire operation process, so as to improve the transmission efficiency, reduce the wear and prolong the service life.

[0099] Secondly, please refer to Figure 4 , the second aspect of the present application also proposes a hybrid vehicle thermal management system, comprising a storage battery 2, a vehicle controller 16, a drive motor 3, a power battery 4, a radiator and the engine assembly 1 in the above embodiment. The engine body 11 has a first cooling water jacket; the storage battery 2 is electrically connected with the fan motor 14; the vehicle controller 16 is electrically connected with the engine body 11, the fan motor 14 and the storage battery 2; the drive motor 3 is electrically connected with the vehicle controller 16; the power battery 4 is electrically connected with the storage battery 2 and the drive motor 3; at least one of the power battery 4, the fan motor 14, the drive motor 3 and the vehicle controller 16 has a second cooling water jacket; the radiator corresponds to the radiator fan 12, and the radiator is communicated with the cooling water jacket through a pipeline, and the cooling water jacket includes the first cooling water jacket and the second cooling water jacket.

[0100] It should be noted that, Figure 4 The solid line in the figure represents the mechanical connection between each component, and the dashed line represents the electrical connection between each component. The battery 2 is electrically connected to the vehicle controller 16 and the fan motor 14, in other words, the battery 2 of the vehicle is used to supply power to the vehicle controller 16 and the fan motor 14. There are many types of batteries 2, including lead-acid batteries, lithium-ion batteries, nickel-hydrogen batteries, etc. According to the type of vehicle, the battery 2 has different power supply voltages, for example, for passenger cars (such as sedans, sport utility vehicles), a 24V voltage can be provided, for commercial vehicles (such as trucks, buses) and special vehicles (such as medical equipment, communication equipment), a 48V voltage can be provided, the 24V voltage is usually generated by two 12V batteries in series, and the 48V voltage is usually generated by four 12V batteries in series. The vehicle controller 16 is electrically connected to the engine body 11 and the fan motor 14, that is, the vehicle controller 16 is electrically connected to the electronic control unit of the engine body 11 and the fan motor controller of the fan motor 14. The vehicle controller 16 is electrically connected to the drive motor 3, which can realize the transmission of signals and the transmission of control instructions, and ensure the efficient and safe operation of the vehicle. The vehicle controller 16 is electrically connected to the engine assembly 1, the drive motor 3 and the fan motor 14, which can realize the overall control of the vehicle driving, energy management and other functions. The power battery 4 is electrically connected to the drive motor 3, which can provide electric energy for the drive motor 3 to drive the vehicle to run. The power battery 4 is electrically connected to the battery 2, which can convert its high-voltage electricity into low-voltage electricity through a DC / DC converter to charge the battery 2, reducing the probability of battery 2 running out of power. Because the voltage and current output of the power battery 4 are relatively stable, it can provide a more efficient charging process for the battery 2, effectively improving the charging efficiency.

[0101] The cooling water jacket is an important part of the vehicle cooling system, which is a cavity structure surrounding the components that need to be cooled by the vehicle, used to contain cooling liquid (usually water or antifreeze) to absorb and dissipate heat generated during vehicle operation. The cooling water jacket provided by the embodiments of the present application includes a first cooling water jacket and a second cooling water jacket, the first cooling water jacket is arranged on the engine cylinder and the cylinder head of the engine body 11, and the second cooling water jacket is arranged on at least one of the power battery 4, the fan motor 14, the drive motor 3 and the vehicle controller 16. For different vehicle models, at least one of the power battery 4, the fan motor 14 and the vehicle controller 16 can be equipped with a second cooling water jacket. For the power battery 4, the second cooling water jacket can be a pipeline integrated inside the battery module, or a part of the battery pack shell. As part of the vehicle cooling system, the second cooling water jacket can take away the heat generated by the power battery 4, the fan motor 14 and the vehicle controller 16 during operation through the circulation of the cooling liquid in the flow channel.

[0102] The radiator corresponds to the radiator fan 12, and the radiator is connected to the cooling water jacket through a pipeline. The coolant in the cooling water jacket flows in the pipeline and exchanges heat with the outside air through the radiator fins, thereby dissipating heat to the air. The radiator fan 12 can accelerate the air flow around the radiator by forced convection, quickly take away the hot air around the radiator, and thus improve the heat dissipation efficiency of the radiator.

[0103] Please refer to Figure 5 In some embodiments, the hybrid vehicle further comprises an electronic thermostat 51 and an electronic cooling water pump 52, the electronic thermostat 51 is respectively electrically connected to the battery 2 and the vehicle controller 16, and the electronic thermostat 51 is arranged on the pipeline between the cooling water jacket and the radiator; the electronic cooling water pump 52 is respectively electrically connected to the battery 2 and the vehicle controller 16, and the electronic cooling water pump 52 is arranged on the pipeline between the cooling water jacket and the radiator.

[0104] The electronic thermostat 51 and the electronic cooling water pump 52 work cooperatively under the control of the vehicle controller 16. The electronic cooling water pump 52 is responsible for circulating the coolant, and the electronic thermostat 51 adjusts the flow of the coolant according to the temperature change of the coolant. The two work together to ensure that at least one of the power battery 4, the fan motor 14 and the vehicle controller 16 operates within an optimal temperature range.

[0105] Compared with the mechanical water pump and the mechanical thermostat used in the related art, the electronic thermostat 51 and the electronic cooling water pump 52 are used in the present application, and the battery 2 is used for power supply. In this way, it can be avoided that the mechanical water pump and the mechanical thermostat cannot be powered after the engine body 11 is stopped, thereby affecting the normal work of the vehicle cooling system.

[0106] The scheme provided by the embodiments of the present application can independently drive the electronic thermostat 51 and the electronic cooling water pump 52 by the battery 2 after the engine body 11 is stopped, thereby effectively ensuring the normal work of the vehicle cooling system.

[0107] Please refer to Figure 5 In some embodiments, the cooling water jacket can further comprise a third cooling water jacket; and the hybrid vehicle thermal management system further comprises a retarder 6, the retarder 6 having the third cooling water jacket (not shown in the figure).

[0108] The hybrid vehicle, especially the passenger vehicle of more than 5 tons and the truck of more than 12 tons, is usually provided with a retarder 6. The retarder 6 is used to help control the vehicle speed when the vehicle is decelerating or descending a long slope, thereby reducing or relieving the load of the service brake, and improving the safety and stability of the vehicle driving. There are various types of retarders 6, including hydraulic retarders, electric eddy current retarders, engine retarders, etc. The designer can select a suitable retarder 6 according to actual needs, and the embodiments of the present application do not make specific limitations in this regard.

[0109] In the embodiment, the retarder 6 has a third cooling jacket; the third cooling jacket is communicated with the radiator through a pipeline; the cooling liquid flowing through the third cooling jacket is returned to the third cooling jacket after being cooled by the radiator, so that the retarder 6 can be cooled and the working temperature of the retarder 6 can be effectively adjusted.

[0110] Finally, referring to Figure 6 The third aspect of the present application also provides a hybrid vehicle comprising the hybrid vehicle thermal management system described in the above embodiment.

[0111] The hybrid vehicle provided by the present application can work in a hybrid mode, an engine body 11 direct drive mode and a pure electric mode. Since the hybrid vehicle thermal management system of the above embodiment is provided, that is, the engine assembly 1 is provided, when in the hybrid mode or the engine body 11 direct drive mode, the hybrid vehicle can drive the radiator fan 12 by controlling the engine body 11, and when in the pure electric mode, the hybrid vehicle can drive the radiator fan 12 by controlling the fan motor 14, so as to ensure the normal ventilation and heat dissipation function of the radiator fan 12, thereby avoiding affecting the normal operation of the vehicle.

[0112] In addition, the hybrid vehicle can further comprise an electric air compressor 7, which is electrically connected with the vehicle controller 16 and the power battery 4.

[0113] It can be understood that the braking system is an important system for the vehicle to slow down or stop, and during driving, the braking system can convert the kinetic energy of the vehicle into heat energy, so as to reduce the vehicle speed or make the vehicle completely stop. During braking, the braking system can ensure the stability and maneuverability of the vehicle, and avoid the vehicle out of control. Moreover, the braking system can quickly slow down or stop in an emergency, thereby protecting the safety of the driver and the pedestrian.

[0114] The electric air compressor 7 is an important component of the braking system. The electric air compressor 7 is an air compressor driven by an air compressor motor, which uses the power of the air compressor motor to generate compressed air by controlling the working of the compressor through the vehicle controller 16. The compressed air can push the brake shoes or brake discs and other braking elements to generate braking force, so as to slow down or stop the vehicle.

[0115] Compared with the mechanical air compressor in the related art, the power of which is derived from the output shaft 111 of the engine, the electric air compressor 7 is adopted in the present application, and the power battery 4 is used for power supply, so that the engine body 11 can provide power for the mechanical air compressor after shutdown, thereby avoiding affecting the normal working of the vehicle braking system.

[0116] The scheme provided in the embodiment of the application can independently realize the driving of the electric air compressor 7 by the power battery 4 after the engine body 11 is stopped, thereby effectively ensuring the normal work of the vehicle braking system.

[0117] Please refer to Figure 6 In some embodiments, the hybrid vehicle can further include an electronic steering pump 8, which is electrically connected with the vehicle controller 16 and the power battery 4.

[0118] It can be understood that the steering system is a series of devices for changing or maintaining the driving or reversing direction of the vehicle, which can control the driving direction of the vehicle according to the intention of the driver, ensure the controllability of the driving direction of the vehicle, and guarantee the driving safety.

[0119] The electronic steering pump 8 is an important component of the steering system. The electronic steering pump 8 is a hydraulic pump driven by a steering pump motor, which can generate a steering assist on the steering gear or steering transmission mechanism to help the driver more easily operate the steering wheel when the driver turns the steering wheel. The vehicle controller 16 can control the speed and output pressure of the electronic steering pump 8 according to the signals such as vehicle speed and steering angle, and then automatically adjust the size of the steering assist.

[0120] Compared with the mechanical steering pump in the related art, the power of which is derived from the output shaft 111 of the engine, the electronic steering pump 8 is adopted in the application, and the power battery 4 is used for power supply, which can avoid the situation that the engine body 11 cannot provide power for the mechanical steering pump after the engine body 11 is stopped, thereby affecting the normal work of the vehicle steering system.

[0121] The scheme provided in the embodiment of the application can independently realize the driving of the electronic steering pump 8 by the power battery 4 after the engine body 11 is stopped, thereby effectively ensuring the normal work of the vehicle steering system.

[0122] Please refer to Figure 6 In some embodiments, the hybrid vehicle can further include an electric compressor 9, which is electrically connected with the vehicle controller 16 and the power battery 4.

[0123] It can be understood that the air conditioning system is an important device on the vehicle for adjusting environmental parameters such as temperature, humidity, air flow speed and air cleanliness in the vehicle to create a comfortable driving environment.

[0124] The electric compressor 9 is a core component of the air conditioning system, which can compress the low-temperature and low-pressure gaseous refrigerant into high-temperature and high-pressure gaseous refrigerant, thereby driving the refrigerant to circulate in the air conditioning system, and realizing the refrigeration and heating functions.

[0125] The electric compressor 9 is electrically connected with the power battery 4. The electric compressor 9 comprises an inverter, a motor and a compressor. Under the control of the vehicle controller 16, the inverter efficiently converts the direct current generated by the power battery 4 into alternating current (three-phase), and then drives the motor to operate. The motor drives the compressor to operate by driving the compressor with the alternating current output by the inverter, so as to realize the refrigeration and heating functions.

[0126] Compared with the mechanical compressor in the related art whose power is derived from the engine output shaft 111, the electric compressor 9 is adopted in the present application, and the power battery 4 is used for power supply. In this way, it can be avoided that the engine body 11 cannot provide power for the mechanical compressor after the engine body 11 is stopped, thereby affecting the normal work of the vehicle air conditioning system.

[0127] The scheme provided by the embodiments of the present application can independently realize the driving of the electric compressor 9 by the power battery 4 after the engine body 11 is stopped, thereby effectively ensuring the normal work of the vehicle air conditioning system.

[0128] The above embodiments are only used to illustrate the technical solutions of the present application, but not limit the same; although the foregoing embodiments of the present application are described in detail, those skilled in the art should understand that the technical solutions recorded in the foregoing embodiments can be modified, or some or all of the technical features can be replaced by equivalents; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application, and they should be covered in the scope of the claims and the specification of the present application. Especially, as long as there is no structural conflict, each technical feature mentioned in each embodiment can be combined in any way. The present application is not limited to the specific embodiments disclosed in the present application, but includes all technical solutions falling within the scope of the claims.

Claims

1. An engine assembly (1) characterised in that, Comprising: a heat dissipation fan (12); an engine body (11), which is selectively drivingly connected with the heat dissipation fan (12) through a first one-way bearing; a fan motor (14), which is selectively drivingly connected with the heat dissipation fan (12) through a second one-way bearing.

2. The engine assembly (1) according to claim 1, characterized in that The heat dissipation fan (12) comprises a driving shaft (121) and a fan blade (122), the driving shaft (121) is rotatably arranged at the front end of the engine body (11), and the heat dissipation fan (12) is connected to the end of the driving shaft (121) away from the engine body (11); The first one-way bearing and the second one-way bearing are both mounted on the driving shaft (121), and the driving direction of the first one-way bearing is opposite to that of the second one-way bearing.

3. The engine assembly (1) according to claim 1 or 2, characterized in that The engine assembly (1) further comprises: a first transmission mechanism (13), which is connected with the engine output shaft (111) of the engine body (11) and the first one-way bearing respectively, so that the engine body (11) is selectively drivingly connected with the heat dissipation fan (12) through the first one-way bearing; a second transmission mechanism (15), which is connected with the output shaft of the fan motor (14) and the second one-way bearing respectively, so that the fan motor (14) is selectively drivingly connected with the heat dissipation fan (12) through the second one-way bearing.

4. The engine assembly (1) according to claim 3, characterized in that The first transmission mechanism (13) comprises a first pulley (131), a first belt (132) and a first transmission pulley (133), the first pulley (131) is connected with the engine output shaft (111), the first transmission pulley (133) is connected with the first one-way bearing, and the first belt (132) is sleeved on the first pulley (131) and the first transmission pulley (133); The second transmission mechanism (15) comprises a second pulley (151), a second belt (152) and a second transmission pulley (153), the second pulley (151) is connected with the output shaft of the fan motor (14), the second transmission pulley (153) is connected with the second one-way bearing, and the second belt (152) is sleeved on the second pulley (151) and the second transmission pulley (153).

5. The engine assembly (1) according to claim 4, characterized in that The second transmission mechanism (15) further comprises a tension pulley (154); The second belt (152) is sleeved on the tension pulley (154), the tension pulley (154) and the fan motor (14) are both fixedly connected on a fixed support (112), and the fixed support (112) is fixedly connected on the outside of the engine body (11).

6. A hybrid vehicle thermal management system, characterized by, Comprising: The engine assembly (1) according to any one of claims 1 to 5, wherein the engine body (11) has a first cooling jacket; a storage battery (2), which is electrically connected with the fan motor (14); a vehicle control unit (16), which is electrically connected with the engine body (11), the fan motor (14) and the storage battery (2); a driving motor (3) electrically connected with the vehicle controller (16); a power battery (4) electrically connected with the storage battery (2) and the driving motor (3); at least one of the power battery (4), the fan motor (14), the driving motor (3), and the vehicle controller (16) has a second cooling water jacket; and a radiator corresponding to the radiator fan (12), the radiator being in communication with the cooling water jacket through a pipeline, the cooling water jacket including the first cooling water jacket and the second cooling water jacket.

7. The hybrid vehicle thermal management system of claim 6, wherein, The hybrid vehicle thermal management system further comprises: an electronic thermostat (51) electrically connected with the storage battery (2) and the vehicle controller (16) respectively, the electronic thermostat (51) being arranged on the pipeline between the cooling water jacket and the radiator; an electronic cooling water pump (52) electrically connected with the storage battery (2) and the vehicle controller (16) respectively, the electronic cooling water pump (52) being arranged on the pipeline between the cooling water jacket and the radiator.

8. The hybrid vehicle thermal management system of claim 6, wherein, The cooling water jacket further comprises a third cooling water jacket; The hybrid vehicle thermal management system further comprises: a retarder (6) having the third cooling water jacket.

9. A hybrid vehicle characterized by comprising: Comprise: The hybrid vehicle thermal management system according to any one of claims 6 to 8.

10. The hybrid vehicle according to claim 9, characterized by Further comprise: an electric air compressor (7) electrically connected with the vehicle controller (16) and the power battery (4); and / or an electronic steering pump (8) electrically connected with the vehicle controller (16) and the power battery (4); and / or an electric compressor (9) electrically connected with the vehicle controller (16) and the power battery (4).

Images