Hybrid power system, carrying tool and truck

Abstract

The invention discloses a hybrid power system, a carrying tool and a truck, and belongs to the field of vehicles. The hybrid power system comprises a motor, a power generator, a battery, an engine and a controller, the motor and the power generator are both electrically connected with the battery, the motor and the engine are selectively in dynamic coupling connection, the engine and the power generator are in dynamic coupling connection, and the controller is electrically connected with the power generator. The motor, the generator, the battery and the engine are all in communication connection with the controller; wherein the controller is configured to control the motor, the generator and the engine to work and control the motor and the engine to be in dynamic coupling connection under the condition that the load capacity of the carrying tool is determined to be larger than a target load. The fuel consumption of the carrying tool can be reduced, and the transportation cost is reduced.

Description

Technical Field

[0001] The present application belongs to the field of vehicle technology, and in particular relates to a hybrid power system, a vehicle and a truck. Background Art

[0002] Currently, the power systems in vehicles have high transportation costs and energy replenishment problems in long-distance transportation, which need to be improved. Summary of the invention

[0003] The present application aims to solve at least one of the technical problems existing in the prior art. To this end, the present application proposes a hybrid power system, a vehicle and a truck, which can reduce the fuel consumption of the vehicle and reduce the transportation cost.

[0004] In a first aspect, the present application provides a hybrid power system for a vehicle, comprising: an electric motor, a generator, a battery, an engine and a controller, wherein the electric motor and the generator are both electrically connected to the battery, the electric motor and the engine are selectively power-coupled, the engine and the generator are power-coupled, and the electric motor, the generator, the battery and the engine are all communicatively connected to the controller; wherein: The controller is configured to control the motor, the generator and the engine to operate, and control the motor to be power-coupled with the engine when it is determined that the load of the vehicle is greater than the target load.

[0005] According to the hybrid power system of the present application, the electric motor and the generator are both electrically connected to the battery, and the electric motor and the generator are each selectively power-coupled to the engine. When the vehicle is in a fully loaded condition, the electric motor and the engine jointly drive the vehicle to travel, and a part of the power of the engine is used to drive the generator to generate electricity. The electric energy generated by the generator is stored in the battery, and the battery is used to provide power for the electric motor, thereby reducing fuel consumption and reducing transportation costs.

[0006] According to one embodiment of the present application, the hybrid power system further includes a first shaft, a second shaft, a clutch and a drive axle, the first shaft and the second shaft are connected via the clutch, the first shaft is respectively coupled to the engine and the generator, and the second shaft is respectively coupled to the drive axle and the motor; The controller is configured to control the clutch to engage if it is determined that the load weight of the vehicle is greater than a target load.

[0007] According to one embodiment of the present application, the orthographic projection of the first axis on the horizontal plane is coaxial with the orthographic projection of the second axis on the horizontal plane.

[0008] According to one embodiment of the present application, the second shaft includes a first part to a third part connected in sequence, the first part is connected to the first shaft through the clutch, the third part is connected to the drive axle, and the axes of the first part and the first shaft are collinear.

[0009] According to one embodiment of the present application, the generator is arranged on one side of the radial direction of the first shaft, and the motor is arranged on one side of the radial direction of the second shaft; the first shaft is provided with a first bevel gear, and the input end of the generator is provided with a second bevel gear meshing with the first bevel gear; the motor is provided with a third bevel gear, and the second shaft is provided with a fourth bevel gear meshing with the third bevel gear.

[0010] According to an embodiment of the present application, the controller is configured to control the clutch to be disengaged and control the motor to operate when it is determined that the load weight of the vehicle is less than the target load.

[0011] According to one embodiment of the present application, the controller is configured to control both the motor and the engine to operate, and control the engine to be power-coupled with the generator when it is determined that the load weight of the vehicle is less than the target load and the battery power is less than the target power threshold.

[0012] According to one embodiment of the present application, the controller is configured to control the motor to operate when it is determined that the load weight of the vehicle is less than the target load and the battery power is not less than the target power threshold.

[0013] In a second aspect, the present application provides a vehicle comprising a hybrid power system as described in any of the above embodiments.

[0014] In a third aspect, the present application provides a truck comprising the hybrid power system described in any of the above embodiments.

[0015] Additional aspects and advantages of the present application will be given in part in the description below, and in part will become apparent from the description below, or will be learned through the practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The above and / or additional aspects and advantages of the present application will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which: Figure 1 It is one of the structural schematic diagrams of the vehicle provided in the embodiment of the present application; Figure 2 This is the second structural schematic diagram of the vehicle provided in the embodiment of the present application; Figure 3This is the third structural schematic diagram of the vehicle provided in the embodiment of the present application.

[0017] Reference numerals: 1. Electric motor, 2. Generator, 3. Battery, 4. Engine, 5. First shaft, 6. Second shaft, 61. First part, 62. Second part, 63. Third part, 7. Clutch, 8. Drive axle, 9. First bevel gear, 10. Second bevel gear, 11. Third bevel gear, 12. Fourth bevel gear. DETAILED DESCRIPTION

[0018] The embodiments of the present application are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present application, and cannot be understood as limiting the present application.

[0019] Vehicles such as vans and trucks have empty and loaded operating conditions. The driving power required under empty and fully loaded conditions differs by several times. Using a high-power engine as a power source to drive an empty van will cause significant energy waste and increase transportation costs.

[0020] Using a high-power electric motor to drive a fully loaded truck will result in the motor being too large, difficult to install, and having serious energy replenishment problems, making it inconvenient for long-distance transportation.

[0021] Purely electric trucks have limited energy due to battery power density issues; there is no energy replenishment problem between city clusters, but there is a serious energy replenishment problem outside of city clusters, which is not conducive to long-distance transportation of trucks.

[0022] Using a high-power internal combustion engine to drive a heavy-duty truck will cause serious energy waste when it is empty or driving at low speed, thereby increasing transportation costs.

[0023] Reference below Figure 1-Figure 3 A hybrid power system, a vehicle and a truck according to an embodiment of the present application are described. The hybrid power system is used to drive the vehicle to travel.

[0024] The means of transport may be a van, a truck, an unmanned transport vehicle or the like used for transporting.

[0025] like Figure 1-Figure 3 As shown, the hybrid power system of the embodiment of the present application includes: an electric motor 1, a generator 2, a battery 3, an engine 4 and a controller. The electric motor 1 and the generator 2 are both electrically connected to the battery 3, the electric motor 1 and the engine 4 can be selectively power-coupled, the engine 4 and the generator 2 are power-coupled, and the electric motor 1, the generator 2, the battery 3 and the engine 4 are all communicatively connected to the controller.

[0026] The generator 2 and the battery 3 can be electrically connected via wires. The generator 2 is used to generate electrical energy, and the electrical energy generated by the generator 2 can be stored in the battery 3 .

[0027] When the power level of battery 3 is not less than the target power level threshold, the power level of battery 3 is sufficient and battery 3 supplies power to motor 1; when the power level of battery 3 is less than the target power level threshold, the power level of battery 3 is low and the vehicle is in a power feeding condition. Generator 2 generates electricity and stores electrical energy in battery 3 to drive motor 1 to operate.

[0028] The electric motor 1 is electrically connected to a battery 3 , and the battery 3 is used to supply power to the electric motor 1 . The electric motor 1 may be connected to a drive axle 8 of a vehicle.

[0029] The drive axle 8 is a mechanical device connecting the transmission system and the wheels, transmitting power to the drive wheels through the main reducer, differential, half shafts and other components, and allowing the left and right wheels to rotate at different speeds.

[0030] The electric motor 1 and the engine 4 can be selectively connected in a power coupling manner.

[0031] When the electric motor 1 is power-coupled with the engine 4 , the electric motor 1 and the engine 4 jointly drive the vehicle to travel.

[0032] When the electric motor 1 is decoupled from the engine 4 , the electric motor 1 or the engine 4 drives the vehicle to travel.

[0033] The generator 2 is power-coupled to the engine 4 .

[0034] When the generator 2 is power-coupled with the engine 4, the engine 4 is working, the power of the engine 4 is transmitted to the motor 1, the generator 2 generates electricity and stores the electric energy in the battery 3 to drive the motor 1; when the engine 4 is not working, the generator 2 does not generate electricity.

[0035] The controller is configured to control the motor 1 , the generator 2 and the engine 4 to operate when it is determined that the load of the vehicle is greater than the target load, and to control the motor 1 and the generator 2 to be power-coupled with the engine 4 .

[0036] The vehicle may be provided with a pressure detection device, which is used to detect the load capacity of the vehicle. The controller is communicatively connected with the pressure detection device, and the controller may obtain real-time data detected by the pressure detection device and compare it with the target load.

[0037] In this embodiment, the target load is a preset value, and the target load can be determined according to the vehicle model, number of axles, purpose and regulatory restrictions.

[0038] Among them, classified by vehicle type, the target load can be taken as the minimum value of the full load range of the vehicle. For example, the full load weight of a mini truck (light truck) is usually between 0.5 tons and 3 tons, and the target load of a mini truck can be 0.5 tons; the full load weight of a medium truck is usually between 4 tons and 15 tons, and the total mass is between 4.5 tons and 12 tons, and the target load of a medium truck can be 4.5 tons; the full load weight of a heavy truck is usually between 15 tons and 40 tons, and the total mass is between 14 tons and 100 tons, and the target load of a heavy truck can be 14 tons; the full load weight of an ultra-heavy truck exceeds 40 tons, and the total mass exceeds 100 tons, and the target load of an ultra-heavy truck can be 40 tons.

[0039] In this embodiment, the load capacity of the vehicle is greater than the target load, that is, the vehicle is in a fully loaded state, the motor 1 and the engine 4 jointly drive the vehicle to travel, the engine 4 is power-coupled with the generator 2, and part of the power of the engine 4 is used to drive the generator 2 to generate electricity. The electric energy generated by the generator 2 is stored in the battery 3, and the battery 3 is used to provide power for the motor 1.

[0040] According to the hybrid power system provided in the embodiment of the present application, by arranging that the motor 1 and the generator 2 are both electrically connected to the battery 3, the motor 1 and the engine 4 can be selectively power-coupled, and the engine 4 and the generator 2 are power-coupled. When the vehicle is in a fully loaded condition, the motor 1 and the engine 4 jointly drive the vehicle to travel, and a part of the power of the engine 4 is used to drive the generator 2 to generate electricity. The electric energy generated by the generator 2 is stored in the battery 3, and the battery 3 is used to provide power for the motor 1, thereby reducing fuel consumption and reducing transportation costs.

[0041] In some embodiments, the controller is configured to control the motor 1 to operate when it is determined that the load weight of the vehicle is less than the target load.

[0042] In this embodiment, the load of the vehicle is less than the target load, and the vehicle is in an unloaded condition. The motor 1 drives the vehicle to travel, which can significantly reduce the energy consumption of the vehicle when it is unloaded.

[0043] In some embodiments, when it is determined that the load weight of the vehicle is less than the target load and the battery 3 is less than the target power threshold, the controller is configured to control both the motor 1 and the engine 4 to operate, decouple the motor 1 from the engine 4, and control the engine 4 to be power-coupled with the generator 2, wherein the engine 4 is used to drive the generator 2 to generate electricity, and the motor 1 is used to drive the vehicle to travel.

[0044] The vehicle is generally provided with a battery power detection device, which is used to obtain the power of the battery 3. The controller is communicatively connected with the battery power detection device, and the controller obtains the detection data of the battery power detection device and compares it with the target power threshold.

[0045] In this embodiment, the vehicle is in an unloaded and powered condition. The controller controls the motor 1 to drive the vehicle to travel, and controls the engine 4 to drive the generator 2 to generate electricity. The electric energy generated by the generator 2 is stored in the battery 3. The battery 3 is used to provide power for the motor 1, thereby increasing the mileage of the vehicle when it is unloaded.

[0046] The target power threshold is a set value, and the target power threshold may be 20% to 30% of the battery capacity.

[0047] Exemplarily, the target power threshold may be 20%, 25%, 28% or 30%.

[0048] In some embodiments, the controller is configured to control the motor 1 to operate when it is determined that the load of the vehicle is less than the target load and the power of the battery 3 is not less than the target power threshold.

[0049] In this embodiment, the vehicle is in an unloaded state and the battery 3 has sufficient power. The motor 1 is controlled to drive the vehicle to travel, thereby reducing fuel consumption and transportation costs.

[0050] In some embodiments, Figure 2 and Figure 3 As shown, the hybrid power system also includes a first shaft 5, a second shaft 6, a clutch 7 and a drive axle 8. The first shaft 5 and the second shaft 6 are connected via the clutch 7. The first shaft 5 is respectively coupled to the engine 4 and the generator 2, and the second shaft 6 is respectively coupled to the drive axle 8 and the motor 1.

[0051] The drive axle 8 can be front-wheel drive or rear-wheel drive. In some embodiments, the drive axle 8 is rear-wheel drive.

[0052] The clutch 7 has two connection states: engaged and disengaged. The engagement of the clutch 7 can enable the engine 4 and the motor 1 to be power-coupled, and the disengagement of the clutch 7 can decouple the engine 4 and the motor 1 to achieve their respective independence.

[0053] In some embodiments, Figure 3 As shown, the orthographic projection of the first shaft 5 on the horizontal plane is coaxial with the orthographic projection of the second shaft 6 on the horizontal plane, so that when the clutch 7 is engaged, at least part of the axes of the first shaft 5 and the second shaft 6 are colinear, thereby enabling the power of the motor 1 to be transmitted to the second shaft 6 through the first shaft 5.

[0054] In some embodiments, Figure 3As shown, the generator 2 is arranged on one radial side of the first shaft 5, and the motor 1 is arranged on one radial side of the second shaft 6; the first shaft 5 is provided with a first bevel gear 9, and the input end of the generator 2 is provided with a second bevel gear 10 meshing with the first bevel gear 9; the motor 1 is provided with a third bevel gear 11, and the second shaft 6 is provided with a fourth bevel gear 12 meshing with the third bevel gear 11.

[0055] The first bevel gear 9 and the second bevel gear 10 form a first bevel gear set, and the engine 4 is power-coupled to the generator 2 via the first bevel gear set. The first bevel gear set is used to transmit part of the power of the engine 4 to the drive axle 8 via the second shaft 6, and the other part of the power to the generator 2.

[0056] The third bevel gear 11 and the fourth bevel gear 12 form a second bevel gear set, and the second shaft 6 is power-coupled to the motor 1 via the second bevel gear set. The second bevel gear set is used to transmit the power of the motor 1 to the drive axle 8 to drive the vehicle to operate.

[0057] In some embodiments, Figure 2 As shown, the second shaft 6 includes a first part 61 to a third part 63 connected in sequence, the first part 61 is connected to the first shaft 5 through a clutch 7, the third part 63 is connected to the drive axle 8, and the axes of the first part 61 and the first shaft 5 are colinear, so that power transmission between the first shaft 5 and the second shaft 6 can be achieved when the clutch 7 is engaged.

[0058] The fourth bevel gear 12 is disposed on the third portion 63 .

[0059] In some embodiments, Figure 1 and Figure 2 As shown, the axes of the first part 61 and the third part 63 are arranged in parallel, so that power transmission between the first shaft 5 and the second shaft 6 can be achieved when the clutch 7 is engaged.

[0060] In some embodiments, the first portion 61 and the third portion 63 are spaced apart from each other in the upper and lower parts, the second portion 62 is tilted, the battery 3 is located below the second portion 62 , and the second portion 62 leaves an installation space for the battery 3 .

[0061] The control logic of the clutch 7 includes at least the following three types: First, the controller is configured to control the clutch 7 to engage when it is determined that the load of the vehicle is greater than the target load.

[0062] In this embodiment, the controller controls the clutch 7 to engage so that the engine 4 and the motor 1 are coupled in series, thereby achieving the engine 4 and the motor 1 jointly driving the vehicle under the fully loaded condition of the vehicle.

[0063] When the vehicle is fully loaded, the sensor detects that the speed output by the engine 4 is consistent with the speed of the motor 1, and the vehicle controller controls the clutch 7 to close. A part of the power of the engine 4 is transmitted to the generator 2 through the first bevel gear set for power generation, and the generated electric energy is stored in the battery 3 through the wiring harness to provide power for the motor 1. Another part of the power of the engine 4 is transmitted to the second shaft 6 through the clutch 7, and the engine 4 and the motor 1 are connected in series to provide power for the operation of the vehicle.

[0064] In this embodiment, when the vehicle is fully loaded, the engine 4 and the motor 1 are connected in series and drive the vehicle together through a transmission shaft, and the transmission shaft is a first shaft 5 and a second shaft 6 connected by a clutch 7; because the driving speed of a loaded truck is generally not higher than 100KM / H, the motor 1 is still in the maximum efficiency range and will not cause significant energy waste.

[0065] Secondly, the controller is configured to control the clutch 7 to be disengaged when it is determined that the load of the vehicle is less than the target load.

[0066] When the vehicle is in an unloaded condition, the controller decouples the engine 4 and the motor 1 by controlling the clutch 7 to separate, and the engine 4 or the motor 1 drives the vehicle to travel alone.

[0067] In this embodiment, the controller can control the motor 1 to drive the vehicle to travel and reduce fuel consumption.

[0068] In some embodiments, the controller is configured to control both the motor 1 and the engine 4 to operate, and control the engine 4 to be power-coupled with the generator 2 when it is determined that the load of the vehicle is less than the target load and the battery 3 is less than the target power threshold.

[0069] In this embodiment, when the vehicle is unloaded under power supply, the controller of the vehicle controls the clutch 7 to be disconnected, and the motor 1 transmits power to the drive axle 8 through the second bevel gear set to drive the vehicle to operate. The engine 4 operates in the maximum efficiency range, and transmits power to the generator 2 through the first bevel gear set. The generator 2 transmits the generated electric energy to the battery 3 through the wiring harness, and the battery 3 stores the electric energy, which is used to drive the motor 1 to operate. In this working condition, the engine 4 always operates in the best efficiency range, maximizes the energy utilization, improves the fuel consumption ratio, and reduces the transportation cost.

[0070] In some embodiments, the controller is configured to control the motor 1 to operate when it is determined that the load of the vehicle is less than the target load and the power of the battery 3 is not less than the target power threshold.

[0071] The hybrid power system provided in the present application is such that, when the vehicle is unloaded and the power level of the battery 3 is lower than the target power threshold, the controller sends a signal to control the engine 4 to start, and the engine 4 drives the generator 2 to generate electricity; when the power level of the battery 3 carried by the vehicle is not less than the target power threshold, the controller of the vehicle sends a control signal to stop the operation of the engine 4.

[0072] When the vehicle is traveling in an area where it is convenient to recharge the battery 3, the battery 3 carried by the vehicle can be charged by an external power source, further reducing transportation costs.

[0073] According to the hybrid system provided by the present application, when the vehicle is unloaded and the battery 3 has sufficient power, the motor 1 drives the vehicle to operate; when the vehicle is unloaded and powered, the engine 4 drives the generator 2 to generate electricity and stores the electricity in the onboard battery 3 to drive the motor 1 to operate; when the vehicle is fully loaded, the engine 4 and the motor 1 are connected in series to jointly drive the vehicle to operate. Therefore, the hybrid drive scheme of the present application can significantly reduce the energy consumption of the vehicle when it is unloaded, reduce the problem of energy replenishment, and is suitable for long-distance transportation of load-bearing vehicles.

[0074] An embodiment of the present application also provides a vehicle, comprising a hybrid power system according to any one of the above embodiments.

[0075] The embodiment of the present application also provides a truck, comprising a hybrid power system of any one of the above embodiments.

[0076] The terms "first", "second", etc. in the specification and claims of the present application are used to distinguish similar objects, and are not used to describe a specific order or sequence. It should be understood that the data used in this way can be interchangeable under appropriate circumstances, so that the embodiments of the present application can be implemented in an order other than those illustrated or described here, and the objects distinguished by "first", "second", etc. are generally of one type, and the number of objects is not limited. For example, the first object can be one or more. In addition, "and / or" in the specification and claims represents at least one of the connected objects, and the character " / " generally indicates that the objects associated with each other are in an "or" relationship.

[0077] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0078] In the description of this application, "first feature" or "second feature" may include one or more of the features.

[0079] In the description of the present application, “plurality” means two or more.

[0080] In the description of the present application, a first feature being “on” or “under” a second feature may include that the first and second features are directly in contact with each other, or may include that the first and second features are not in direct contact with each other but are in contact with each other via another feature therebetween.

[0081] In the description of the present application, “above”, “over” and “above” a first feature to a second feature includes the first feature being directly above and obliquely above the second feature, or simply means that the first feature is horizontally higher than the second feature.

[0082] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials, or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0083] Although the embodiments of the present application have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present application, and that the scope of the present application is defined by the claims and their equivalents.

Claims

1. A hybrid power system for a vehicle, characterized in that: include: An electric motor, a generator, a battery, an engine and a controller, wherein the electric motor and the generator are both electrically connected to the battery, the electric motor and the engine are selectively power-coupled, the engine and the generator are power-coupled, and the electric motor, the generator, the battery and the engine are all communicatively connected to the controller; wherein, The controller is configured to control the motor, the generator and the engine to operate, and control the motor to be power-coupled with the engine when it is determined that the load of the vehicle is greater than the target load.

2. The hybrid power system according to claim 1, characterized in that: The hybrid power system further includes a first shaft, a second shaft, a clutch and a drive axle, wherein the first shaft and the second shaft are connected via the clutch, the first shaft is respectively coupled to the engine and the generator, and the second shaft is respectively coupled to the drive axle and the motor; The controller is configured to control the clutch to engage if it is determined that the load weight of the vehicle is greater than a target load.

3. The hybrid power system according to claim 2, characterized in that: The orthographic projection of the first axis on the horizontal plane is coaxial with the orthographic projection of the second axis on the horizontal plane.

4. The hybrid power system according to claim 3, characterized in that: The second shaft includes a first part to a third part which are connected in sequence, the first part is connected to the first shaft via the clutch, the third part is connected to the drive axle, and the axes of the first part and the first shaft are colinear.

5. The hybrid power system according to claim 2, characterized in that: The generator is arranged on one side of the radial direction of the first shaft, and the motor is arranged on one side of the radial direction of the second shaft; the first shaft is provided with a first bevel gear, and the input end of the generator is provided with a second bevel gear meshing with the first bevel gear; the motor is provided with a third bevel gear, and the second shaft is provided with a fourth bevel gear meshing with the third bevel gear.

6. The hybrid power system according to any one of claims 2 to 5, characterized in that: The controller is configured to control the clutch to be disengaged and the motor to be operated if it is determined that the load weight of the vehicle is less than the target load.

7. The hybrid power system according to claim 6, characterized in that: The controller is configured to control both the motor and the engine to operate, and control the engine to be power-coupled with the generator when it is determined that the load of the vehicle is less than the target load and the battery power is less than a target power threshold.

8. The hybrid power system according to claim 6, characterized in that: The controller is configured to control the motor to operate when it is determined that the load of the vehicle is less than the target load and the battery power is not less than a target power threshold.

9. A vehicle, characterized in that: A hybrid power system comprising any one of claims 1-8.

10. A truck, characterized in that: A hybrid power system comprising any one of claims 1-8.

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