Hybrid power control system, method and vehicle

Abstract

The present invention belongs to the technical field of hybrid power control, and discloses a hybrid power control system, method and vehicle. The system includes an engine, a generator / motor, a drive motor, a power battery, a first clutch and a second clutch. The engine and the generator / motor are connected through the first clutch, the generator / motor and the drive motor are connected through the second clutch, the drive motor is connected to the drive axle, the power battery is used to supply power to the generator / motor and the drive motor, and the generator / motor can switch between a drive mode and a power generation mode; the method is: judging the current driving mode of the vehicle, the driving mode is one of a normal mode, a limp mode and a get-out-of-traffic mode. The normal mode is used when the vehicle is driving normally; the get-out-of-traffic mode can be used to increase power when the vehicle is going over a slope or a depression; the limp mode is used when the vehicle fails to allow the vehicle to maintain a certain driving ability so that it can drive to the maintenance area in time.

Description

Technical Field

[0001] The present invention relates to the technical field of hybrid power control, and in particular to a hybrid power control system, method and vehicle. Background Art

[0002] A hybrid power control system used in off-road mining vehicles in the prior art Figure 1 As shown, the hybrid control system includes an engine 1, a generator / motor 2, a drive motor 3, a power battery 4, a first controller 81, a second controller 82 and other components. The engine 1 is connected to the generator / motor 2, the drive motor 3 is connected to the drive axle 7, and the drive axle 7 is connected to the wheel 71. The power battery 4 is electrically connected to the generator through the first controller 81, and the first controller 81 controls the generator / motor 2 to work and switch between the driving mode and the power generation mode. The power battery 4 is electrically connected to the drive motor 3 through the second controller 82, and the second controller 82 controls the drive motor 3 to work to drive the drive axle 7 to rotate. Specifically, the system works in the series range extension mode, the engine 1 drives the generator / motor 2, so that the generator / motor 2 charges the power battery 4, and the power battery 4 discharges to the drive motor 3, and the drive motor 3 works to drive the drive axle 7 to rotate.

[0003] However, the above system also has some shortcomings: the vehicle's ambient temperature is too low, resulting in low discharge efficiency of the power battery 4, or when the battery fails, it cannot reliably supply power to the drive motor 3, which causes the drive motor 3 to be unable to drive the drive axle 7 to rotate, causing the vehicle to lose power and be unable to drive. In addition, when the vehicle is driving on a slope or pothole, the conventional power output is too small, making it difficult to cross the slope and pothole. Summary of the invention

[0004] The purpose of the present invention is to provide a hybrid power control system, method and vehicle, by adding two clutches so that the system has a normal mode, a limp home mode and an escape mode. The normal mode is used when the vehicle is driving normally, and the limp home mode is used when the vehicle breaks down to drive the vehicle to a maintenance area in a timely manner. When the vehicle goes over a slope or a depression, the escape mode can be used to increase power to ensure smooth passage over the slope or depression. The system can adapt to the requirements of various complex driving road conditions, and when the vehicle breaks down, the system can allow the vehicle to maintain a certain driving ability so that it can be driven to a safe area or a maintenance area in a timely manner.

[0005] To achieve this object, the present invention adopts the following technical solutions:

[0006] A hybrid power control system includes an engine, a generator / motor, a drive motor, a power battery, a first clutch and a second clutch;

[0007] The engine is connected to the generator / motor via a first clutch, the generator / motor is connected to the drive motor via a second clutch, and the drive motor is connected to a drive axle;

[0008] The power battery is used to supply power to the generator / motor and the drive motor;

[0009] The driving motor is used to drive the driving axle to rotate;

[0010] The generator / motor has a driving mode and a generating mode; wherein,

[0011] When in the driving mode, the generator / motor can start the engine or drive the drive axle to rotate; when in the power generation mode, the generator / motor is driven by the engine and charges the power battery.

[0012] Preferably, a first controller is further included, and the power battery is electrically connected to the generator / motor through the first controller, and the first controller is used to control the generator / motor to switch between the driving mode and the power generation mode.

[0013] Preferably, a second controller is further included, and the power battery is electrically connected to the drive motor via the second controller, and the second controller is used to control the operation of the drive motor.

[0014] A hybrid power control method is provided, which uses the above hybrid power control system, and the hybrid power control method comprises the following steps:

[0015] determining a current driving mode of the vehicle, wherein the driving mode is one of a normal mode, a limp home mode, and an escape mode;

[0016] If the driving mode is the limp mode, the working states of the generator / motor, the first clutch, and the second clutch are controlled accordingly according to different influencing factors;

[0017] The influencing factors include at least one of the ambient temperature, the remaining power of the power battery, the drive motor failure, the power battery failure, and the engine failure.

[0018] Preferably, the engine itself has a starter, and the limp home mode includes a first limp home mode, a second limp home mode, a third limp home mode and a fourth limp home mode; wherein,

[0019] When in the first limp home mode, the first clutch is normally closed, the starter starts the engine, the generator / motor is in a power generation mode, and the second clutch is suitable for closing when the vehicle needs to travel;

[0020] When in the second limp home mode, the first clutch is normally closed, the generator / motor is in a driving mode and the engine is started, and the second clutch is adapted to be closed when the vehicle needs to travel;

[0021] When in the third limp home mode, the first clutch is normally closed, the starter starts the engine, the generator / motor does not work, and the second clutch is suitable for closing when the vehicle needs to travel;

[0022] When in the fourth limp home mode, the second clutch is normally disconnected and the generator / motor does not operate.

[0023] Preferably, the limp mode selection process includes:

[0024] S101, determining whether the ambient temperature is lower than a threshold temperature and / or whether the remaining power of the power battery is lower than a threshold power; if so, selecting the first limp home mode; if not, proceeding to step S102;

[0025] S102, determining whether the drive motor is faulty; if so, selecting the second limp home mode; if not, proceeding to step S103;

[0026] S103, determining whether the power battery is faulty; if so, selecting the third limp home mode; if not, proceeding to step S104;

[0027] S104: Determine whether the engine is faulty; if so, select the fourth limp home mode.

[0028] Preferably, if the driving mode is the escape mode, the first clutch is normally disconnected, the second clutch is normally closed, the generator / motor is in the driving mode and drives the drive axle to rotate together with the driving motor.

[0029] Preferably, the operation requirement of the escape mode is that the remaining power of the power battery is greater than 60% of its total power.

[0030] Preferably, if the driving mode is the normal mode, the first clutch and the second clutch are respectively normally closed, and the generator / motor is in a power generation mode.

[0031] A vehicle comprising:

[0032] Chassis;

[0033] The above hybrid power control system is arranged on the chassis.

[0034] Beneficial effects:

[0035] The hybrid power control system provided by the present invention adds a first clutch between the engine and the generator / motor, and adds a second clutch between the generator / motor and the drive motor. The addition of the first clutch and the second clutch enables the entire system to have three driving modes: normal mode, limp mode, and escape mode. Specifically, when the vehicle is driving normally, the normal mode is adopted; when the vehicle fails, the limp mode is adopted to drive the vehicle to the maintenance area in time; when the vehicle passes over a slope or a depression, the escape mode can be adopted to increase power to ensure smooth passing over the slope or the depression. And in the limp mode, the working states of the generator / motor, the first clutch, and the second clutch are adaptively adjusted, so that the vehicle can maintain its own power under different conditions such as low ambient temperature, insufficient remaining power of the power battery, drive motor failure, power battery failure, engine failure, etc., so that the vehicle can maintain a certain driving ability so that it can drive to a safe area or a maintenance area in time. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] Figure 1 is a schematic diagram of a hybrid power control system provided in the prior art;

[0037] Figure 2 is a schematic diagram of a hybrid power control system provided by the present invention;

[0038] Figure 3 is a flow chart of a hybrid power control method provided by the present invention;

[0039] Figure 4 is a specific schematic diagram of the limp mode provided by the present invention;

[0040] Figure 5 It is a schematic diagram of the flow chart of limp mode selection provided by the present invention.

[0041] In the figure:

[0042] 1. Engine;

[0043] 2. Generator / motor;

[0044] 3. Drive motor;

[0045] 4. Power battery;

[0046] 5. First clutch;

[0047] 6. Second clutch;

[0048] 7. Drive axle; 71. Wheel;

[0049] 81. A first controller; 82. A second controller. DETAILED DESCRIPTION

[0050] The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are only used to explain the present invention, rather than to limit the present invention. It should also be noted that, for ease of description, only parts related to the present invention, rather than all structures, are shown in the accompanying drawings.

[0051] In the description of the present invention, unless otherwise clearly specified and limited, the terms "connected", "connected", and "fixed" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0052] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0053] In the description of this embodiment, the terms "upper", "lower", "right", etc., directions or positional relationships are based on the directions or positional relationships shown in the drawings, and are only for the convenience of description and simplification of operation, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are only used to distinguish in the description and have no special meaning.

[0054] This embodiment provides a hybrid power control system. Figure 2As shown, the hybrid control system includes an engine 1, a generator / motor 2, a drive motor 3, a power battery 4, a first clutch 5 and a second clutch 6. Specifically, the engine 1, the generator / motor 2 and the drive motor 3 are connected in sequence, the first clutch 5 is arranged on the transmission shaft between the engine 1 and the generator / motor 2, the second clutch 6 is arranged on the transmission shaft between the generator / motor 2 and the drive motor 3, and the drive motor 3 is connected to the drive axle 7. The power battery 4 is used to supply power to the generator / motor 2 and the drive motor 3. The drive motor 3 is used to drive the drive axle 7 to rotate. The generator / motor 2 has a driving mode and a power generation mode, wherein when in the driving mode, the generator / motor 2 can start the engine 1 or drive the drive axle 7 to rotate; when in the power generation mode, the generator / motor 2 is driven by the engine 1 and charges the power battery 4.

[0055] Continue to refer to Figure 3 to Figure 4 As shown, this embodiment also provides a hybrid power control method. The beneficial effects of the hybrid power control system are described below in conjunction with the hybrid power control method.

[0056] The hybrid power control method applies the above hybrid power control system, including:

[0057] Determine the current driving mode of the vehicle, which is one of the normal mode, the limp home mode and the escape mode; if the driving mode is the limp home mode, control the working states of the generator / motor 2, the first clutch 5 and the second clutch 6 accordingly according to different influencing factors; the influencing factors include at least one of the ambient temperature, the remaining power of the power battery 4, the failure of the drive motor 3, the failure of the power battery 4 and the failure of the engine 1.

[0058] In this embodiment, the hybrid control system adds a first clutch 5 between the engine 1 and the generator / motor 2, and adds a second clutch 6 between the generator / motor 2 and the drive motor 3. The addition of the first clutch 5 and the second clutch 6 enables the entire system to have three driving modes: normal mode, limp mode, and escape mode. Specifically, when the vehicle is driving normally, the normal mode is adopted; when the vehicle fails, the limp mode is adopted to drive the vehicle to the maintenance area in time; when the vehicle passes over a slope or a depression, the escape mode can be adopted to increase power to ensure smooth passing over a slope or a depression. In addition, in the limp mode, the working states of the generator / motor 2, the first clutch 5, and the second clutch 6 are adaptively adjusted, so that the vehicle can maintain its own power under different conditions such as low ambient temperature, insufficient remaining power of the power battery 4, failure of the drive motor 3, failure of the power battery 4, and failure of the engine 1, so that the vehicle can maintain a certain driving ability so that it can be driven to a safe area or a maintenance area in time.

[0059] In this embodiment, the hybrid control system further includes a first controller 81, through which the power battery 4 is electrically connected to the generator / motor 2, and the first controller 81 is used to control the generator / motor 2 to switch between the driving mode and the power generation mode. Specifically, the power battery 4 can control the on and off of the generator / motor 2 through the first controller 81, and the first controller 81 is used to switch the working mode of the generator / motor 2.

[0060] In this embodiment, the hybrid power control system further includes a second controller 82, through which the power battery 4 is electrically connected to the drive motor 3, and the second controller 82 is used to control the operation of the drive motor 3. Specifically, the power battery 4 can control the on and off of the drive motor 3 through the second controller 82, and the drive motor 3 is powered on to drive the drive axle 7 to rotate, so as to drive the wheels 71 connected to the drive axle 7 to rotate.

[0061] Specifically, when the vehicle is in limp mode, and the remaining power of the power battery 4 is between the first power lower limit threshold and the first power upper limit threshold, the power battery 4 needs to be charged, and the generator / motor 2 works in the power generation mode. When the vehicle is in normal mode, and the remaining power of the power battery 4 is between the second power lower limit threshold and the second power upper limit threshold, the power battery 4 needs to be charged, and the generator / motor 2 works in the power generation mode. Specifically, the first power lower limit threshold is equal to the second power lower limit threshold. The first power upper limit threshold is less than the second power upper limit threshold.

[0062] Specifically, the power battery 4 is provided with a monitoring and management system (not shown), which outputs an allowed feedback current Ic. The vehicle control strategy controls the feedback current Id<Ic of the drive motor 3 to ensure the safety of the power battery 4 .

[0063] In this embodiment, if the vehicle driving mode is selected as the normal mode, the first clutch 5 and the second clutch 6 are respectively normally closed, and the generator / motor 2 is in the power generation mode. Specifically, when the vehicle is driving in the normal mode, the first clutch 5 is normally closed, the engine 1 is working, and the generator / motor 2 is in the power generation mode. The generator / motor 2 is driven by the engine 1 to generate electricity, and the generated electric energy is charged into the power battery 4. At the same time, the power battery 4 supplies electric energy to the drive motor 3, and the drive motor 3 is powered on to drive the drive axle 7 to rotate, so as to drive the wheels 71 connected to the drive axle 7 to rotate.

[0064] In this embodiment, if the driving mode is the escape mode, the first clutch 5 is always disconnected, the second clutch 6 is always closed, the generator / motor 2 is in the driving mode and drives the drive axle 7 to rotate together with the drive motor 3. Specifically, when the vehicle needs to increase power when climbing a slope or passing a pit, the vehicle is driven in the escape mode, the first clutch 5 is disconnected, and the power between the engine 1 and the generator / motor 2 is cut off. The generator / motor 2 is in the driving mode, and the second clutch 6 is closed, the generator / motor 2 and the drive motor 3 jointly drive the drive axle 7 to rotate, increasing the power output to the drive axle 7, thereby effectively improving the vehicle power in a short time, helping the vehicle to climb the slope and pass the pit smoothly.

[0065] In this embodiment, the operation requirement of the escape mode is: the remaining power of the power battery 4 is greater than 60% of its total power. Specifically, since the generator / motor 2 and the drive motor 3 jointly drive the drive axle 7 to rotate, the power battery 4 supplies power to the generator / motor 2 and the drive motor 3 at the same time during this process, and the power consumption of the power battery 4 is significantly increased. Therefore, the escape mode requires that the remaining power of the power battery 4 is greater than 60% of its total power. This ensures that the power battery 4 has enough power to support the generator / motor 2 and the drive motor 3 during the escape mode, and ensures that the remaining power of the power battery 4 can support the vehicle to switch back to other modes and continue to work reliably after the escape mode ends.

[0066] In this embodiment, the working time required in the escape mode does not exceed 3 minutes.

[0067] In this embodiment, in the escape mode, the power of the vehicle can be doubled under the joint drive of the generator / motor 2 and the drive motor 3.

[0068] In this embodiment, the engine 1 itself has a starter (not shown), and the starter can directly start the engine 1 without the aid of the generator / motor 2, so that the engine 1 works. The starter is equivalent to a backup starting device of the engine 1. Specifically, the working voltage of the starter is 24V.

[0069] Specifically in this embodiment, the limp mode includes a first limp mode, a second limp mode, a third limp mode and a fourth limp mode. Among them, when in the first limp mode, the first clutch 5 is always closed, the starter starts the engine 1, the generator / motor 2 is in the power generation mode, and the second clutch 6 is suitable for closing when the vehicle needs to travel. When in the second limp mode, the first clutch 5 is always closed, the generator / motor 2 is in the drive mode and starts the engine 1, and the second clutch 6 is suitable for closing when the vehicle needs to travel. When in the third limp mode, the first clutch 5 is always closed, the starter starts the engine 1, the generator / motor 2 does not work, and the second clutch 6 is suitable for closing when the vehicle needs to travel. When in the fourth limp mode, the second clutch 6 is always disconnected, and the generator / motor 2 does not work.

[0070] Specifically, the first limp home mode is applicable to the case where the ambient temperature is lower than the threshold temperature, and / or the remaining power of the power battery 4 is lower than the threshold power. Specifically, the threshold temperature corresponds to the temperature at which the power battery 4 can effectively output electric energy. When the ambient temperature is lower than the threshold temperature, and / or the remaining power of the power battery 4 is lower than the threshold power, the power battery 4 cannot effectively discharge to the outside. At this time, the engine 1 is started by the starter. After the engine 1 works, the generator / motor 2 is in the power generation mode, and the generator / motor 2 is driven by the engine 1 and charges the power battery 4. In this process, if the vehicle needs to travel, the second clutch 6 is closed, and the power between the engine 1 and the drive axle 7 is connected. The power output by the engine 1 drives the vehicle to travel, and the vehicle can be supported to travel to a safe area or a maintenance area. When the ambient temperature is not lower than the threshold temperature, and the remaining power of the power battery 4 is not lower than the threshold power, the vehicle can be switched to the normal mode.

[0071] Specifically, the second limp home mode is applicable to the case where the drive motor 3 fails, or the second controller 82 fails. Specifically, when the drive motor 3 fails, or the second controller 82 fails, the drive motor 3 cannot work normally. At this time, the first clutch 5 is in a closed state, and the generator / motor 2 is in a driving mode, that is, the engine 1 is started by the generator / motor 2. When the vehicle needs to drive, the second clutch 6 is closed, and the power between the engine 1 and the drive axle 7 is connected. The power output by the engine 1 drives the vehicle to drive, and can support the vehicle to drive to a safe area or a maintenance area. It is worth mentioning that in the second limp home mode, after starting the engine 1, whether the generator / motor 2 continues to work in the power generation mode depends on the remaining power of the power battery 4.

[0072] Specifically, the third limp home mode is applicable to the case of a failure of the power battery 4. Specifically, when the power battery 4 fails, the generator / motor 2 and the drive motor 3 cannot work normally, and the first clutch 5 is closed. When the vehicle needs to travel, the second clutch 6 is closed, and the power between the engine 1 and the drive axle 7 is connected. The power output by the engine 1 drives the vehicle to travel, and the vehicle can be supported to travel to a safe area or a maintenance area.

[0073] Specifically, the fourth limp home mode is applicable to the situation where the engine 1 fails. Specifically, when the engine 1 fails, the second clutch 6 is often disconnected, interrupting the power from the engine 1 to the drive axle 7. The power battery 4 supplies power to the drive motor 3, and the drive motor 3 directly controls the rotation of the drive axle 7 to drive the vehicle, which can support the vehicle to travel to a safe area or a maintenance area. It is worth mentioning that in the fourth limp home mode, the speed of the drive motor 3 needs to be limited, that is, the vehicle speed limit. Due to the failure of the engine 1, the generator / motor 2 cannot charge the power battery 4 at the same time to avoid excessive power consumption of the power battery 4.

[0074] Exemplarily, this embodiment also provides a limp home mode selection process. Figure 5 As shown, the selection process includes the following:

[0075] S101, determining whether the ambient temperature is lower than a threshold temperature and / or whether the remaining power of the power battery 4 is lower than a threshold power; if so, selecting the first limp home mode; if not, proceeding to step S102;

[0076] S102, determining whether the drive motor 3 is faulty; if so, selecting the second limp home mode; if not, proceeding to step S103;

[0077] S103, determining whether the power battery 4 is faulty; if so, selecting the third limp home mode; if not, proceeding to step S104;

[0078] S104, determining whether the engine 1 is faulty; if so, selecting the fourth limp home mode.

[0079] Specifically, when the limp home mode is needed, first consider whether the ambient temperature is too low or the remaining power of the power battery 4 is too low. After excluding the above situations, further consider whether the drive motor 3 is faulty. If the drive motor 3 is not faulty, further consider whether the power battery 4 is faulty. The first limp home mode, the second limp home mode and the third limp home mode are selected in sequence for the above three situations. After excluding the above three situations, it can be basically determined that the engine 1 is faulty, and the fourth limp home mode is selected at this time.

[0080] This embodiment also provides a vehicle. The vehicle includes a chassis (not shown) and the hybrid power control system described above, which is arranged on the chassis. The vehicle applies the hybrid power control system described above, and thus can have all the beneficial effects of the hybrid power control system and the hybrid power control method described above.

[0081] To sum up, the hybrid power control system provided in this embodiment, combined with the corresponding control method, has a normal mode, a limp home mode and an escape mode. The normal mode is used when the vehicle is driving normally, and the limp home mode is used when the vehicle breaks down to drive the vehicle to the maintenance area in time. When the vehicle goes over a slope or a depression, the escape mode can be used to increase power to ensure smooth passage over the slope or the depression. It can adapt to the requirements of various complex driving road conditions, and when the vehicle breaks down, it can allow the vehicle to maintain a certain driving ability so that it can drive to a safe area or a maintenance area in time.

[0082] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. For those skilled in the art, various obvious changes, readjustments and substitutions can be made without departing from the protection scope of the present invention. It is not necessary and impossible to list all the embodiments here. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the claims of the present invention.

Claims

1. A hybrid power control method, using a hybrid power control system, the hybrid power control system comprising an engine (1), a generator / motor (2), a drive motor (3), a power battery (4), a first clutch (5) and a second clutch (6); The engine (1) is connected to the generator / motor (2) via a first clutch (5), the generator / motor (2) is connected to the drive motor (3) via a second clutch (6), and the drive motor (3) is connected to a drive axle (7); The power battery (4) is used to supply power to the generator / motor (2) and the drive motor (3); The driving motor (3) is used to drive the driving axle (7) to rotate; The generator / motor (2) has a driving mode and a power generation mode; wherein: When in the driving mode, the generator / motor (2) can start the engine (1) or drive the drive axle (7) to rotate; when in the power generation mode, the generator / motor (2) is driven by the engine (1) and charges the power battery (4); Characterized in that the hybrid power control method comprises the following steps: determining a current driving mode of the vehicle, wherein the driving mode is one of a normal mode, a limp home mode, and an escape mode; If the driving mode is a limp home mode, the working states of the generator / motor (2), the first clutch (5), and the second clutch (6) are controlled accordingly according to different influencing factors; The influencing factors include at least one of the ambient temperature, the remaining power of the power battery (4), a failure of the drive motor (3), a failure of the power battery (4), and a failure of the engine (1); The engine (1) itself has a starter, and the limp home mode includes a first limp home mode, a second limp home mode, a third limp home mode and a fourth limp home mode; wherein: When in the first limp home mode, the first clutch (5) is normally closed, the starter starts the engine (1), the generator / motor (2) is in a power generation mode, and the second clutch (6) is suitable for closing when the vehicle needs to travel; When in the second limp home mode, the first clutch (5) is normally closed, the generator / motor (2) is in a driving mode and starts the engine (1), and the second clutch (6) is suitable for closing when the vehicle needs to travel; When in the third limp home mode, the first clutch (5) is normally closed, the starter starts the engine (1), the generator / motor (2) does not work, and the second clutch (6) is suitable for closing when the vehicle needs to travel; When in the fourth limp home mode, the second clutch (6) is normally disconnected and the generator / motor (2) does not work; The limp mode selection process includes: S101, determining whether the ambient temperature is lower than a threshold temperature and / or whether the remaining power of the power battery (4) is lower than a threshold power; if so, selecting the first limp home mode; if not, proceeding to step S102; S102, determining whether the drive motor (3) is faulty; if so, selecting the second limp home mode; if not, proceeding to step S103; S103, determining whether the power battery (4) is faulty; if so, selecting the third limp home mode; if not, proceeding to step S104; S104, determining whether the engine (1) is faulty; if so, selecting the fourth limp home mode.

2. The hybrid power control method according to claim 1, characterized in that: The hybrid power control system further comprises a first controller (81), the power battery (4) being electrically connected to the generator / motor (2) via the first controller (81), the first controller (81) being used to control the generator / motor (2) to switch between the driving mode and the power generation mode.

3. The hybrid power control method according to claim 1, characterized in that: The hybrid power control system further comprises a second controller (82), the power battery (4) is electrically connected to the drive motor (3) via the second controller (82), and the second controller (82) is used to control the operation of the drive motor (3).

4. The hybrid power control method according to claim 1, characterized in that: If the driving mode is the escape mode, the first clutch (5) is normally disconnected, the second clutch (6) is normally closed, the generator / motor (2) is in the driving mode and drives the drive axle (7) to rotate together with the drive motor (3).

5. The hybrid power control method according to claim 4, characterized in that: The operation requirement of the escape mode is that the remaining power of the power battery (4) is greater than 60% of its total power.

6. The hybrid power control method according to claim 1, characterized in that: If the driving mode is the normal mode, the first clutch (5) and the second clutch (6) are respectively normally closed, and the generator / motor (2) is in the power generation mode.

7. A vehicle, characterized in that: The hybrid power control method according to any one of claims 1 to 3 is used for control; the vehicle includes a chassis, and the hybrid power control system is arranged on the chassis.

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