Dual-power control method and device, and dual-power vehicle

Abstract

The present application relates to the technical field of heavy-duty dual-power vehicles, and provides a dual-power control method and device, and a dual-power vehicle. The dual-power control method includes: obtaining the power demand of the vehicle; regulating the output power of the main power source and the auxiliary power source respectively according to the power demand; if the power load of the main power source does not exceed the standard, then controlling the output power of the auxiliary power source to be within a preset power range; and if the power load of the main power source exceeds the standard, regulating the output power of the auxiliary power source so that the power load of the main power source reaches a preset percentage range of the rated power load. After obtaining the power demand, the present application determines how to regulate the output power of the main power source and the auxiliary power source according to the power load status of the current main power source of the vehicle to meet the power demand under different power load vehicle conditions, and can implement a dual-power management strategy that is more suitable for the current vehicle condition.

Description

Technical Field

[0001] The present application relates to the technical field of heavy-duty dual-power vehicles, and in particular to a dual-power control method and device, and a dual-power vehicle. Background Art

[0002] At present, many dual-power vehicles are equipped with two high-horsepower powertrains to provide power for the vehicle, one powertrain to provide power for the front axle, and the other powertrain to provide power for the middle and rear axles. The current multi-power distributed drive technology is mostly used for light-load vehicles such as passenger cars. For heavy-load vehicles, especially special heavy-duty vehicles that need to travel on complex road conditions, the coordinated control of multiple powertrains is particularly important. How to perform more reasonable dual-power management based on the current actual vehicle conditions is a technical problem that needs to be solved in this field. Summary of the invention

[0003] In view of this, the present application provides a dual-power control method and device, and a dual-power vehicle, which can perform more reasonable dual-power management according to the current actual vehicle conditions.

[0004] In a first aspect, the present application provides a dual-power control method for a dual-power vehicle, wherein the dual-power vehicle includes a main power source and an auxiliary power source, wherein the main power source and the auxiliary power source are respectively used to provide power for two drive axles of the vehicle; wherein the method includes: obtaining the power demand of the vehicle; regulating the output power of the main power source and the auxiliary power source respectively according to the power demand; if the power load of the main power source does not exceed the standard, controlling the output power of the auxiliary power source to be within a preset power range; and if the power load of the main power source exceeds the standard, regulating the output power of the auxiliary power source so that the power load of the main power source reaches within a preset percentage range of the rated power load.

[0005] In this aspect, after obtaining the power demand, it is determined how to regulate the output power of the main power source and the auxiliary power source according to the power load condition of the current main power source of the vehicle to meet the power demand under different power load conditions, thereby realizing a dual power management strategy that is more suitable for the current vehicle condition.

[0006] In combination with the first aspect, in a possible implementation, obtaining the power demand of the vehicle includes: obtaining the vehicle speed, the vehicle driving slope and the driving instructions; and obtaining the corresponding power demand based on the vehicle speed, the driving slope and the driving instructions.

[0007] In combination with the first aspect, in a possible implementation, if the power load of the main power source does not exceed the standard, controlling the output power of the auxiliary power source to be within a preset power range includes: adjusting the output torque of the auxiliary power source to within a preset torque range, wherein the preset torque range is suitable for all vehicle gears.

[0008] In combination with the first aspect, in a possible implementation, if the power load of the main power source exceeds the standard, the output power of the auxiliary power source is regulated so that the power load of the main power source reaches a preset percentage range of the rated power load, including: acquiring the power load of the main power source in real time; if the power load of the main power source is greater than the preset percentage range of the rated power load, increasing the output torque of the auxiliary power source to a first output torque range; and if the power load of the main power source is reduced to within the preset percentage range of the rated power load, maintaining the output torque of the auxiliary power source within the first output torque range.

[0009] In combination with the first aspect, in a possible implementation, if the power load of the main power source exceeds the standard, the output power of the auxiliary power source is regulated so that the power load of the main power source reaches a preset percentage range of the rated power load, which also includes: if the power load of the main power source is less than the preset percentage range of the rated power load, the output torque of the auxiliary power source is reduced to a second output torque range; and if the power load of the main power source is increased to within the preset percentage range of the rated power load, the output torque of the auxiliary power source is maintained within the second output torque range.

[0010] In combination with the first aspect, in a possible implementation, it also includes: if the acceleration of the vehicle controlled by the driving instruction is greater than a preset acceleration value, controlling the front powertrain and the rear powertrain to output maximum output power; switching the shift speed to the fastest shift speed; if the front transmission corresponding to the front powertrain is in a shift state, controlling the rear transmission corresponding to the rear powertrain to delay shifting; and if the rear transmission corresponding to the rear powertrain is in a shift state, controlling the front transmission corresponding to the front powertrain to delay shifting.

[0011] In combination with the first aspect, in a possible implementation, the method also includes: if the driving instruction controls the vehicle to turn, the front powertrain and the rear powertrain are both maintained within a preset power range, the maximum value of the preset power range is less than the maximum output power; and the shifting speed is maintained within a preset shifting speed range, the maximum value of the preset shifting speed range is less than the fastest shifting speed.

[0012] In combination with the first aspect, in a possible implementation, the method further includes: acquiring posture data of the vehicle; and if the posture data includes an uphill state and / or a slipping state, reducing the output power of the front powertrain and / or the rear powertrain.

[0013] In a second aspect, the present application provides a dual-power control device, comprising: a power acquisition module, configured to: acquire the power demand of the vehicle; a whole vehicle control module, communicatively connected to the instruction acquisition module, the whole vehicle control module being configured to: separately regulate the output power of the main power source and the auxiliary power source according to the power demand; if the power load of the main power source does not exceed the standard, control the output power of the auxiliary power source to be within a preset power range; and if the power load of the main power source exceeds the standard, regulate the output power of the auxiliary power source so that the power load of the main power source reaches within a preset percentage range of the rated power load.

[0014] The second aspect is a device corresponding to the first aspect, and the technical effects of the second aspect will not be repeated here.

[0015] In a third aspect, the present application provides a dual-power vehicle, comprising: a front powertrain, used to output power to a front drive axle of the vehicle, the front powertrain serving as a main power source or an auxiliary power source; a rear powertrain, used to output power to a rear drive axle of the vehicle, the rear powertrain serving as a main power source or an auxiliary power source; a working mechanism, used to perform functional work of the vehicle; a working mechanism power source, connected to the working mechanism to provide power to the working mechanism; and the aforementioned dual-power control device.

[0016] The third aspect includes the second aspect, and the technical effects of the third aspect will not be repeated here. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 Shown is a schematic diagram of the method steps of a dual power control method provided in one embodiment of the present application.

[0018] Figure 2 Shown is a schematic diagram of the method steps of a dual power control method provided in another embodiment of the present application.

[0019] Figure 3 Shown is a schematic diagram of the method steps of a dual power control method provided in another embodiment of the present application.

[0020] Figure 4 Shown is a schematic diagram of the method steps of a dual power control method provided in another embodiment of the present application.

[0021] Figure 5 Shown is a schematic diagram of the method steps of a dual power control method provided in another embodiment of the present application.

[0022] Figure 6 Shown is a schematic diagram of the method steps of a dual power control method provided in another embodiment of the present application.

[0023] Figure 7 Shown is a schematic diagram of the method steps of a dual power control method provided in another embodiment of the present application.

[0024] Figure 8 Shown is a schematic diagram of the method steps of a dual power control method provided in another embodiment of the present application.

[0025] Fig. 9 Shown is a structural schematic diagram of a dual-power control device provided in another embodiment of the present application.

[0026] Fig.10 Shown is a partial structural schematic diagram of a dual-power vehicle provided in another embodiment of the present application. DETAILED DESCRIPTION

[0027] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0028] Exemplary Dual Power Control Method

[0029] The present application provides a dual-power control method for a dual-power vehicle, which is specifically a heavy-duty vehicle, and the dual-power vehicle includes a main power source and an auxiliary power source, and the main power source and the auxiliary power source are used to provide power for two drive axles of the vehicle respectively. Specifically, the dual-power vehicle includes a front power assembly and a rear power assembly, the front power assembly provides power for the front axle of the vehicle, and the rear power assembly provides power for the middle and rear axles of the vehicle. The front power assembly serves as the main power source or the auxiliary power source, and accordingly, when the front power assembly serves as the main power source, the rear power assembly serves as the auxiliary power source, and when the front power assembly serves as the auxiliary power source, the rear power assembly serves as the main power source.

[0030] Figure 1 FIG. 1 is a schematic diagram of the steps of a dual power control method provided by an embodiment of the present application. Figure 1 As shown, the dual power control method includes:

[0031] Step 110: Obtain the power requirement of the vehicle.

[0032] When this step is executed, the power demand is the demand for driving power of the current vehicle condition, and the power output of the vehicle needs to meet the power demand to meet the current vehicle condition.

[0033] Step 120: respectively regulating the output power of the main power source and the auxiliary power source according to the power demand.

[0034] Step 130: If the power load of the main power source does not exceed the standard, the output power of the auxiliary power source is controlled to be within a preset power range.

[0035] When the power load of the main power source does not exceed the standard, the main power source can fully meet the power demand. The auxiliary power source only needs to provide an output power within a preset power range. The preset power range can correspond to the state where the output shaft of the gearbox of the auxiliary power source is not greater than 6000Nm, or the preset power range can correspond to the output power of the auxiliary power source to prevent the gearbox from being dragged back. When this step is applied, the power provided by the main power source can be sufficient to drive the vehicle; and at the same time, the auxiliary power source is controlled to have a certain power output. On the one hand, the auxiliary power source can provide a certain auxiliary power, and on the other hand, it can prevent the gearbox corresponding to the auxiliary power source from being dragged back.

[0036] Step 140: If the power load of the main power source exceeds the standard, the output power of the auxiliary power source is regulated so that the power load of the main power source reaches a preset percentage range of the rated power load.

[0037] If the power demand is too large, the power load of the main power source gradually increases. However, in order to ensure that the main power source has a certain reserved power, it is necessary to gradually adjust the output power of the auxiliary power source to make up for the power shortage, so that the power load of the main power source reaches within a preset percentage range of the rated power, where the preset percentage range can be set to 50% to 90%.

[0038] When this embodiment is used, after obtaining the power demand, it determines how to regulate the output power of the main power source and the auxiliary power source according to the power load condition of the current main power source of the vehicle to meet the power demand under different power load vehicle conditions, and can implement a dual power management strategy that is more suitable for the current vehicle condition.

[0039] Specifically, the front powertrain includes a front drive motor and a front drive gearbox, which are used to directly drive the front axle; the rear powertrain includes a rear drive motor and a rear drive gearbox, which are used to directly drive the middle and rear axles. The use of motor drive can achieve no need for preheating and reduce maintenance costs.

[0040] In some application scenarios, when the vehicle is traveling on a flat road, the power demand of the vehicle is mainly related to the vehicle speed. If the vehicle is traveling in a first speed range, and the driving instruction controls the speed of the vehicle to be maintained within the first speed range, the front powertrain is controlled as the main power source for driving the vehicle, and the output power of the rear powertrain is controlled to be within a preset power range as an auxiliary power source; or, the rear powertrain is controlled as the main power source for driving the vehicle, and the output power of the front powertrain is controlled to be within a second preset range as an auxiliary power source. If the vehicle is traveling in a second speed range, and the driving instruction controls the speed of the vehicle to be maintained within the second speed range, the output power of the auxiliary power source is increased so that the power load of the main power source reaches a preset percentage range of the rated power load; the minimum value of the second speed range is greater than the maximum value of the first speed range.

[0041] The first vehicle speed range may be when the vehicle is in a medium or low speed driving state, such as when the vehicle is just started and at a speed of 0 to 50 kilometers per hour. When the vehicle is in a medium or low speed driving state, a single powertrain can fully meet the power demand, and the front powertrain or the rear powertrain is used as the main power source.

[0042] The second vehicle speed range may be when the vehicle is in a high-speed driving state, for example, when the vehicle is at a speed of more than 50 kilometers per hour. As the vehicle speed gradually increases, the power load of the main power source gradually increases, but in order to ensure that the main power source has a certain reserved power, the output power of the auxiliary power source needs to be gradually adjusted to make up for the power shortage.

[0043] In some application scenarios, when the vehicle is climbing a slope, the vehicle's power demand is mainly related to the vehicle speed and slope. In some application scenarios, when the vehicle is accelerating, the vehicle's power demand is mainly related to the vehicle speed, slope, and acceleration.

[0044] Figure 2 FIG. 1 is a schematic diagram of the steps of a dual power control method provided by another embodiment of the present application. Figure 2 As shown, step 110 includes:

[0045] Step 1101: Acquire the vehicle speed, the vehicle driving slope, and the driving instruction input by the driver.

[0046] Step 1102: Obtain corresponding power requirements according to vehicle speed, driving slope and driving instructions.

[0047] When this embodiment is in use, the vehicle speed, driving slope and driving instructions are associated with the power demand. The faster the vehicle speed, the greater the power demand. The greater the driving slope, the greater the power demand. If the driving instruction indicates that the vehicle needs to accelerate sharply, the power demand is greater. Among them, the driver makes driving operations through vehicle control mechanisms such as the accelerator pedal, brake pedal, and operating handle, and the vehicle controller obtains the driving instruction. In addition, the vehicle speed is detected by the vehicle speed sensor, and the vehicle controller obtains the vehicle speed data. The corresponding relationship between the vehicle speed, driving slope, driving instructions and power demand is pre-set, so that after the vehicle speed, driving slope and driving instructions are obtained in this embodiment, the power demand data can be obtained.

[0048] Figure 3 FIG. 1 is a schematic diagram of the steps of a dual power control method provided by another embodiment of the present application. Figure 2 As shown, step 130 includes:

[0049] Step 1301: If the power load of the main power source does not exceed the standard, the output torque of the auxiliary power source is adjusted to within a preset torque range.

[0050] In this embodiment, the preset torque range is adapted to all vehicle gears of the vehicle, that is, when the auxiliary power source operates within the preset torque range, the vehicle can switch to any gear. In this embodiment, the motor corresponding to the auxiliary power source can always be in a speed range that can meet all vehicle gears, reducing the difficulty of coordinated control.

[0051] Figure 4 FIG. 1 is a schematic diagram of the steps of a dual power control method provided by another embodiment of the present application. Figure 4 As shown, step 140 includes:

[0052] Step 1401: Obtain the power load of the main power source in real time.

[0053] Step 1402: If the power load of the main power source is greater than a preset percentage range of the rated power load, the output torque of the auxiliary power source is increased to a first output torque range.

[0054] Step 1403: If the power load of the main power source is reduced to within a preset percentage range of the rated power load, the output torque of the auxiliary power source is maintained within a first output torque range.

[0055] In this embodiment, if the resistance encountered by the vehicle gradually increases and the power load of the main power source is greater than a preset percentage range of the rated power load, it means that the power load of the main power source is too large and the output torque of the auxiliary power source needs to be increased, so as to reduce the power load of the main power source to within a preset percentage range of the rated power load.

[0056] When the output torque of the auxiliary power source increases to the first output torque range, the power load of the main power source is reduced to a preset percentage range of the rated power load. At this time, the output torque of the auxiliary power source is no longer increased, so that the output torque of the auxiliary power source is maintained within the first output torque range.

[0057] Figure 5 FIG. 1 is a schematic diagram of the steps of a dual power control method provided by another embodiment of the present application. Figure 5 As shown, step 140 also includes:

[0058] Step 1404: If the power load of the main power source is less than a preset percentage range of the rated power load, the output torque of the auxiliary power source is reduced to a second output torque range.

[0059] Step 1405: If the power load of the main power source increases to within a preset percentage range of the rated power load, the output torque of the auxiliary power source is maintained within a second output torque range.

[0060] In this embodiment, if the resistance encountered by the vehicle is reduced and the power load of the main power source is less than a preset percentage range of the rated power load, it means that the main power source can still provide more power. At this time, the output torque of the auxiliary power source can be reduced, thereby increasing the power load of the main power source to within a preset percentage range of the rated power load, and at the same time reducing the power consumption of the auxiliary power source.

[0061] When the output torque of the auxiliary power source is reduced to the second output torque range, the power load of the main power source is increased to within a preset percentage range of the rated power load. At this time, the output torque of the auxiliary power source is no longer reduced, so that the output torque of the auxiliary power source is maintained within the second output torque range.

[0062] In the above embodiment, the first output torque range and the second output torque range may be different in size, and may also have an overlapping range. In step 1402, the auxiliary power source is increased from a smaller initial torque to the first output torque range; in step 1404, the auxiliary power source is reduced from a larger initial torque to the second output torque range.

[0063] Figure 6 FIG. 1 is a schematic diagram of the steps of a dual power control method provided by another embodiment of the present application. Figure 6 As shown, the dual power control method also includes:

[0064] Step 160: If the acceleration of the vehicle controlled by the driving command is greater than the preset acceleration value, the front powertrain and the rear powertrain are controlled to output the maximum output power.

[0065] Step 170: Switch the gear shifting speed to the fastest gear shifting speed.

[0066] When step 160 and step 170 are applied, when the acceleration of the vehicle controlled by the driving command is greater than the preset acceleration value, it means that rapid acceleration is required at this time, then the front powertrain and the rear powertrain are controlled to output the maximum output power to provide the most powerful power, and the gear shifting speed is controlled to be the fastest to provide the smoothest and fastest gear shifting.

[0067] Step 180: If the front transmission corresponding to the front powertrain is in a gear shifting state, control the rear transmission corresponding to the rear powertrain to delay gear shifting.

[0068] Step 190: If the rear transmission corresponding to the rear powertrain is in a gear shifting state, control the front transmission corresponding to the front powertrain to delay gear shifting.

[0069] When applied, step 180 and step 190 can avoid the front powertrain and the rear powertrain from shifting gears simultaneously, thereby reducing the shift shock during rapid acceleration.

[0070] Figure 7 FIG. 1 is a schematic diagram of the steps of a dual power control method provided by another embodiment of the present application. Figure 7 As shown, the dual power control method also includes:

[0071] Step 200: If the driving command controls the vehicle to turn, the front power assembly and the rear power assembly are both maintained within a preset power range, and the maximum value of the preset power range is less than the maximum output power.

[0072] Step 210: Maintain the shift speed within a preset shift speed range, wherein the maximum value of the preset shift speed range is less than the fastest shift speed.

[0073] When the present embodiment is in use, if the vehicle is about to turn, the front powertrain and the rear powertrain are controlled not to output the maximum output power to ensure the safety of turning, and there is no need to consider the speed difference between the front and rear axles when turning. In addition, the gear shifting process is not performed at the fastest gear shifting speed to avoid discomfort caused by too fast gear shifting. Specifically, whether the vehicle is turning can be determined based on the driving command, or a yaw angle sensor can be set in the vehicle to determine based on the yaw rate signal.

[0074] Figure 8 FIG. 1 is a schematic diagram of the steps of a dual power control method provided by another embodiment of the present application. Figure 8 As shown, the dual power control method also includes:

[0075] Step 220: Acquire vehicle posture data.

[0076] Step 230: If the posture data includes an uphill state and / or a slipping state, reduce the output power of the front powertrain and / or the rear powertrain.

[0077] When this embodiment is used, the ramp sensor in the vehicle can detect whether the vehicle is in an uphill state, and the traction control system in the vehicle can also detect whether the vehicle is slipping. When the vehicle is in an uphill state, the output power of the front power assembly and / or the rear power assembly is reduced to avoid the probability of tire slippage when the vehicle is climbing. When the vehicle is in a slipping state, the output power of the front power assembly and / or the rear power assembly is reduced to improve the vehicle tire adhesion rate.

[0078] Exemplary Dual Power Control Device

[0079] Fig. 9 FIG. 1 is a schematic diagram of a dual-power control device provided by another embodiment of the present application. The present application provides a dual-power control device, such as Fig. 9 As shown, the dual-power control device includes an instruction acquisition module 901 and a vehicle control module 902 .

[0080] The instruction acquisition module 901 is configured to: acquire the power demand of the vehicle.

[0081] The vehicle control module 902 is in communication connection with the instruction acquisition module 901, and the vehicle control module 902 is configured as follows:

[0082] According to the power demand, the output power of the main power source and the auxiliary power source are respectively adjusted;

[0083] If the power load of the main power source does not exceed the standard, controlling the output power of the auxiliary power source to be within a preset power range; and

[0084] If the power load of the main power source exceeds the standard, the output power of the auxiliary power source is regulated so that the power load of the main power source reaches within a preset percentage range of the rated power load.

[0085] When this embodiment is used, after obtaining the power demand, it determines how to regulate the output power of the main power source and the auxiliary power source according to the power load condition of the current main power source of the vehicle to meet the power demand under different power load vehicle conditions, and can implement a dual power management strategy that is more suitable for the current vehicle condition.

[0086] Exemplary dual-powered vehicle

[0087] The present application also provides a dual-power vehicle, which is specifically a heavy-duty vehicle, and includes a front powertrain, a rear powertrain, a working mechanism, a power source for the working mechanism, and the aforementioned dual-power control device. The front powertrain serves as a main power source or an auxiliary power source, and the rear powertrain serves as a main power source or an auxiliary power source. The front powertrain is used to output power to the front drive axle of the vehicle, the rear powertrain is used to output power to the rear drive axle of the vehicle, the working mechanism is used to perform functional work of the vehicle, and the power source of the working mechanism is connected to the working mechanism to provide power to the working mechanism. The aforementioned dual-power control device is used to control the front powertrain and the rear powertrain.

[0088] Specifically, Fig.10 As shown, the front powertrain includes a front-drive motor, a front-drive gearbox, a front-drive motor control unit and a front-drive gearbox control unit. The vehicle control module sends control signals to the front-drive motor control unit and the front-drive gearbox control unit to control the front-drive motor and the front-drive gearbox.

[0089] The rear powertrain includes a rear-drive motor, a rear-drive gearbox, a rear-drive motor control unit and a rear-drive gearbox control unit. The vehicle control module sends control signals to the rear-drive motor control unit and the rear-drive gearbox control unit to control the rear-drive motor and the rear-drive gearbox.

[0090] The dual-power vehicle also includes an energy storage system, a high-voltage distribution module and a DC charging station. The high-voltage distribution module supplies the output electric energy of the energy storage system to the front powertrain and the rear powertrain, and the external power supply can charge the energy storage system through the DC charging station.

[0091] For example, when the vehicle of the present application is a fire truck, the working mechanism is a water pump, and the power source of the working mechanism is the upper-mounted motor. The upper-mounted motor provides power for the water pump alone, and there is no need to use a transfer case and a power splitter to power the water pump, which can greatly reduce weight.

[0092] In some embodiments, the front powertrain can be simplified to not having a front drive gearbox, and only having a front drive motor to provide power. Alternatively, the rear powertrain can be simplified to not having a rear drive gearbox, and only having a rear drive motor to provide power.

[0093] In some embodiments, the vehicle control module can be integrated with the front-wheel drive motor control unit and the front-wheel drive transmission control unit; the vehicle control module can also be integrated with the rear-wheel drive motor control unit and the rear-wheel drive transmission control unit.

[0094] The basic principles of the present application are described above in conjunction with specific embodiments. However, it should be noted that the advantages, strengths, effects, etc. mentioned in the present application are only examples and not limitations, and it cannot be considered that these advantages, strengths, effects, etc. are required by each embodiment of the present application. In addition, the specific details disclosed above are only for the purpose of illustration and ease of understanding, not for limitation, and the above details do not limit the present application to being implemented by adopting the above specific details.

[0095] The block diagrams of the devices, apparatuses, equipment, and systems involved in this application are only illustrative examples and are not intended to require or imply that they must be connected, arranged, and configured in the manner shown in the block diagram. As will be appreciated by those skilled in the art, these devices, apparatuses, equipment, and systems can be connected, arranged, and configured in any manner. Words such as "including", "comprising", "having", etc. are open words, referring to "including but not limited to", and can be used interchangeably with them. The words "or" and "and" used here refer to the words "and / or" and can be used interchangeably with them, unless the context clearly indicates otherwise. The words "such as" used here refer to the phrase "such as but not limited to", and can be used interchangeably with them.

[0096] It should also be noted that in the apparatus, device and method of the present application, each component or each step can be decomposed and / or recombined. Such decomposition and / or recombination should be regarded as equivalent solutions of the present application.

[0097] The above description of the disclosed aspects is provided to enable any person skilled in the art to make or use the present application. Various modifications to these aspects will be readily apparent to those skilled in the art, and the general principles defined herein may be applied to other aspects without departing from the scope of the present application. Therefore, the present application is not intended to be limited to the aspects shown herein, but rather to the widest scope consistent with the principles and novel features of the present invention.

[0098] The above description is only a preferred embodiment of the present application and is not intended to limit the present application. Any modifications, equivalent substitutions, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. A dual power control method, characterized in that: Used for a dual-power vehicle, the dual-power vehicle comprises a main power source and an auxiliary power source, the main power source and the auxiliary power source are used to provide power for two drive axles of the vehicle respectively; Wherein, the method comprises: Obtain the power requirements of the vehicle; According to the power demand, the output power of the main power source and the auxiliary power source are respectively adjusted; If the power load of the main power source does not exceed the standard, controlling the output power of the auxiliary power source to be within a preset power range; and If the power load of the main power source exceeds the standard, the output power of the auxiliary power source is regulated so that the power load of the main power source reaches a preset percentage range of the rated power load; If the power load of the main power source exceeds the standard, the output power of the auxiliary power source is adjusted so that the power load of the main power source reaches a preset percentage range of the rated power load, which includes: Acquire the power load of the main power source in real time; If the power load of the main power source is greater than a preset percentage range of the rated power load, increasing the output torque of the auxiliary power source to a first output torque range; and If the power load of the main power source decreases to within a preset percentage range of the rated power load, maintaining the output torque of the auxiliary power source within the first output torque range; If the power load of the main power source is less than a preset percentage range of the rated power load, reducing the output torque of the auxiliary power source to a second output torque range; and If the power load of the main power source increases to within a preset percentage range of the rated power load, the output torque of the auxiliary power source is maintained within the second output torque range; The method further comprises: If the acceleration of the vehicle controlled by the driving command is greater than the preset acceleration value, the front powertrain and the rear powertrain are controlled to output the maximum output power; Switch the gear shifting speed to the fastest gear shifting speed; If the front transmission corresponding to the front powertrain is in a gear shifting state, controlling the rear transmission corresponding to the rear powertrain to delay gear shifting; and If the rear transmission corresponding to the rear power assembly is in a gear shifting state, controlling the front transmission corresponding to the front power assembly to delay gear shifting; If the driving command controls the vehicle to turn, the front power assembly and the rear power assembly are both maintained within a preset power range, the maximum value of the preset power range is less than the maximum output power; and The shift speed is maintained within a preset shift speed range, wherein a maximum value of the preset shift speed range is smaller than the fastest shift speed.

2. The dual power control method according to claim 1, characterized in that: The obtaining of the power requirement of the vehicle comprises: Obtaining the vehicle's speed, the vehicle's driving slope, and driving instructions; and The corresponding power requirement is obtained according to the vehicle speed, the driving slope and the driving instruction.

3. The dual power control method according to claim 1, characterized in that: If the power load of the main power source does not exceed the standard, controlling the output power of the auxiliary power source to be within a preset power range includes: The output torque of the auxiliary power source is adjusted to a preset torque range, wherein the preset torque range is suitable for all vehicle gears.

4. The dual power control method according to claim 1, characterized in that: The method further comprises: Obtaining vehicle posture data; and If the posture data includes an uphill state and / or a slipping state, the output power of the front powertrain and / or the rear powertrain is reduced.

5. A dual-power control device, used to implement the dual-power control method as claimed in claim 1, characterized in that: include: A power acquisition module is configured to: acquire a power demand of a vehicle; The vehicle control module is communicatively connected with the power acquisition module, and the vehicle control module is configured as follows: According to the power demand, the output power of the main power source and the auxiliary power source are respectively adjusted; If the power load of the main power source does not exceed the standard, the output power of the auxiliary power source is controlled to be within a preset power range; as well as If the power load of the main power source exceeds the standard, the output power of the auxiliary power source is regulated so that the power load of the main power source reaches within a preset percentage range of the rated power load.

6. A dual-power vehicle, characterized in that: include: A front powertrain, used to output power to a front drive axle of the vehicle, the front powertrain serving as a primary power source or an auxiliary power source; A rear powertrain, used to output power to a rear drive axle of the vehicle, the rear powertrain serving as a primary power source or an auxiliary power source; Working mechanism, used to perform functional work of the vehicle; A working mechanism power source, connected to the working mechanism to provide power to the working mechanism; as well as A dual power control device as claimed in claim 5.

Images