Extended-range engine control system, extended-range engine and vehicle

Abstract

The utility model discloses an extended-range engine control system, an extended-range engine and a vehicle. The extended-range engine is used for charging a power battery. The control system comprises a power auxiliary module, the power battery is provided with a first power supply circuit connected with the driving motor and a second power supply circuit connected with the power auxiliary module, and the power auxiliary module is connected with the driving motor when the second power supply circuit is connected. And the power auxiliary module comprises a first state for assisting the service brake to brake the vehicle and a second state for assisting the vehicle to walk. The power assisting module enhances the power of the engine when the power of the vehicle is insufficient, the power battery can supply power to the driving motor through the first power supply circuit and can supply power to the power assisting module through the second power supply circuit, and on one hand, auxiliary braking of the service brake can be achieved during braking; and on the other hand, when the engine dynamic property is limited in plateau and the like, the engine is assisted to improve the dynamic property.

Description

Technical Field

[0001] The present application belongs to the field of vehicle technology, and specifically relates to an extended-range engine control system, an extended-range engine, and a vehicle. Background Art

[0002] my country has a vast territory and diverse landforms. Some existing vehicle models are mainly used in plateau areas where the air is relatively thin, and high plateau power performance requirements are placed on the vehicles. In particular, for some working conditions, it is necessary to drive the engine at high power in a short period of time to improve the power of the entire vehicle.

[0003] To improve vehicle power, existing technologies typically reconfigure the supercharger. However, this approach requires balancing both flat-road performance and power responsiveness, making it difficult to achieve the desired match. Alternatively, a dual-supercharger configuration is implemented, adding a new supercharger. However, due to the relatively fixed mounting position of the supercharger, this makes placement difficult and installation inconvenient.

[0004] For extended-range engines, how to enable them to generate more power in a short period of time and improve the short-term power of the entire vehicle needs further solution. Utility Model Content

[0005] The present application provides an extended-range engine control system, an extended-range engine and a vehicle, which solve the problem of insufficient power of the vehicle in environments such as plateaus.

[0006] The technical solutions adopted in this application are:

[0007] A range-extended engine control system, wherein the range-extended engine is used to charge a power battery;

[0008] The control system includes: a power auxiliary module, the power battery is provided with a first power supply circuit connected to the drive motor and a second power supply circuit connected to the power auxiliary module, and when the second power supply circuit is connected to the power auxiliary module, the power auxiliary module includes a first state for assisting the service brake to achieve vehicle braking and a second state for assisting the vehicle to move.

[0009] In a preferred embodiment, the control system further comprises:

[0010] A judgment module, the judgment module is used to judge whether the power auxiliary module meets the activation condition of the second state,

[0011] The activation conditions include: a first activation condition, wherein the control system is provided with a first sensor, the first sensor acquires the opening and closing angle and duration of the accelerator pedal, and when the opening and closing angle and duration of the accelerator pedal reach a preset value, the first activation condition is satisfied, and the power assist module is controlled to be in the second state;

[0012] Second enabling condition:

[0013] A second sensor is further provided, the second sensor is used to obtain the environmental altitude, and when the environmental altitude exceeds a preset altitude, the power auxiliary module is controlled to be in the second state;

[0014] A control module, wherein the judgment module sends a signal to the control module when the range-extended engine meets the first enabling condition or the second enabling condition, and the control module controls the second power supply line to be connected, and the power battery supplies power to the power auxiliary module through the second power supply line, and the power auxiliary module is in the second state.

[0015] In a preferred embodiment, the judgment module is used to judge whether the power auxiliary module meets the activation condition of the first state;

[0016] The control system includes a third sensor, which obtains the opening and closing angle and duration of the brake pedal. When the opening and closing angle and duration of the brake pedal reach preset values, the activation conditions of the first state are met, and the power assist module is controlled to be in the first state.

[0017] In a preferred embodiment, the power auxiliary module includes an electric air compressor, a pressure reducer and an intercooler connected in sequence.

[0018] In a preferred embodiment, the power assist module includes a brake air tank connected to the electric air compressor. When the second state ends and the second power supply line is connected, the electric air compressor is connected to the brake air tank and passes the remaining compressed air into the brake air tank.

[0019] In a preferred embodiment, the control system is provided with a fourth sensor connected to the judgment module, and the fourth sensor is used to obtain the air pressure data in the brake air tank and transmit it to the judgment module. The judgment module determines whether the brake air tank is full based on the air pressure data. If it is full, a stop signal is sent to the control module, and the control module controls the second power supply line to disconnect.

[0020] In a preferred embodiment,

[0021] It also includes a power module, which is used to obtain the power of the power battery. When the power of the power battery is less than a first set power, the control module controls the generator to charge the power battery. When the power of the power battery reaches a second set power, charging is stopped; the second set power is not less than the first set power.

[0022] In a preferred embodiment, the second set power level is the full charge level of the battery.

[0023] A range-extended engine comprises a control system as described in any one of the above items, wherein the range-extended engine drives a generator to generate electricity, the generator is provided with a first charging circuit connected to the power battery and a second charging circuit connected to a drive motor, and the drive motor provides driving force for the entire vehicle to move.

[0024] A vehicle comprises a range-extended engine and a power battery, wherein the range-extended engine is provided with the control system as described above.

[0025] Due to the adoption of the above technical solution, the beneficial effects achieved by this application are as follows:

[0026] (1) The power auxiliary module can enhance the engine power when the vehicle power is insufficient. The power battery can supply power to the drive motor through the first power supply line and to the power auxiliary module through the second power supply line. On the one hand, the power auxiliary module can assist the service brake during braking. On the other hand, when the engine power is limited in plateaus, it can assist the engine to improve the power. The first power supply line and the second power supply line do not affect each other. The second power supply line can be connected or not according to the actual situation. Even if the second power supply line is disconnected, it will not affect the power supply of the power battery to the drive motor.

[0027] (2) The power assist module is equipped with an electric air compressor to achieve its power assist effect. The working power source of the electric air compressor is an electrical connection. When the engine power is insufficient in environments such as plateaus, the supercharger cannot provide the engine with sufficient air volume to meet the combustion requirements. An additional air supply method is required to ensure that the engine power increase is not limited by the supercharger. This solution uses an electric air compressor to provide additional air to the engine for fuel combustion, thereby enabling the engine to obtain a higher power output. In addition, the driving method of the electric air compressor is more flexible in its layout compared to the mechanical connection driving method. It does not need to be fixed to the engine and does not occupy the installation space of other components. The installation method is simple and highly adaptable. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:

[0029] Figure 1 This is a diagram showing the connection relationship of components in one embodiment of the present utility model;

[0030] Figure 2 This is a flowchart of activating the second state of the brake assist module in one embodiment of the present invention;

[0031] Figure 3This is a flowchart of the activation of the first state of the brake assist module in one embodiment of the present invention.

[0032] Description of reference numerals:

[0033] 100-Range-extended engine, 200-Generator, 300-Power battery, 400-Drive motor, 500-Electric air compressor, 600-Pressure reducer, 700-Intercooler, 800-Brake air tank, 900-Service brake. DETAILED DESCRIPTION

[0034] In order to more clearly illustrate the overall concept of the present application, a detailed description is given below in an illustrative manner in conjunction with the accompanying drawings.

[0035] The following description sets forth many specific details to facilitate a thorough understanding of the present application. However, the present application may also be implemented in other ways than those described herein, and therefore, the scope of protection of the present application is not limited by the specific embodiments disclosed below. It should be noted that the embodiments of the present application and the features of each embodiment may be combined with each other unless there is a conflict.

[0036] In addition, in the description of the present application, it should be understood that the terms "top", "bottom", "inside", "outside", "axial", "radial", "circumferential", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they cannot be understood as limitations on the present application.

[0037] In this application, unless otherwise expressly specified or limited, terms such as "installed," "connected," "connect," and "fixed" should be understood in a broad sense. For example, they may refer to fixed connection, detachable connection, or integration; mechanical connection, electrical connection, or communication; direct connection or indirect connection through an intermediate medium; and internal communication between two components or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in this application based on specific circumstances.

[0038] In this application, unless otherwise expressly specified and limited, a first feature "above" or "below" a second feature may be that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", 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 an appropriate manner in any one or more embodiments or examples.

[0039] This application provides a range-extended engine control system, such as Figures 1 to 3 As shown, the range-extended engine 100 is used to charge the power battery 300;

[0040] The control system includes: a power auxiliary module, the power battery 300 is provided with a first power supply circuit connected to the drive motor 400 and a second power supply circuit connected to the power auxiliary module, and when the power auxiliary module is connected to the second power supply circuit, the power auxiliary module includes an auxiliary service brake 900 to achieve a first state of vehicle braking and a second state of assisting the vehicle to move.

[0041] The power auxiliary module can be used to enhance engine power when the vehicle power is insufficient. The power battery 300 can supply power to the drive motor 400 through the first power supply line, and can also supply power to the power auxiliary module through the second power supply line. On the one hand, the power auxiliary module can assist the service brake 900 during braking. On the other hand, when the engine power is limited in plateaus, etc., it assists the engine to improve the power. The first power supply line and the second power supply line do not affect each other. The second power supply line is connected or not according to the actual situation. Even if the second power supply line is disconnected, it will not affect the power supply of the power battery 300 to the drive motor 400.

[0042] In one embodiment, if Figure 2 As shown, the control system further includes: a judgment module, the judgment module is used to judge whether the power auxiliary module meets the activation conditions of the second state,

[0043] The activation conditions of the second state include: a first activation condition, the control system is provided with a first sensor, the first sensor obtains the opening and closing angle and duration of the accelerator pedal, when the opening and closing angle and duration of the accelerator pedal reach a preset value, the first activation condition is satisfied, and the power assist module is controlled to be in the second state;

[0044] Second enabling condition:

[0045] A second sensor is also provided, which is used to obtain the environmental altitude. When the environmental altitude exceeds a preset altitude, the power auxiliary module is controlled to be in the second state;

[0046] The control module and the judgment module send a signal to the control module when the extended-range engine 100 meets the first activation condition or the second activation condition. The control module controls the second power supply line to be connected, and the power battery 300 supplies power to the power auxiliary module through the second power supply line. The power auxiliary module is in the second state.

[0047] The activation condition for the second state is actually the vehicle's engine power demand. For the first activation condition, the preset value can be set based on the accelerator pedal opening and closing angle and duration when the vehicle is climbing a slope, or it can be set based on other situations where the engine power demand is greater. Such preset values ​​can be obtained through testing or simulation. For the second activation condition, when the ambient altitude exceeds the preset value, the vehicle is at high altitude, where the air is relatively thin and cannot provide sufficient air for fuel combustion, thus failing to meet the high-altitude engine power requirements. At this time, the power assist module is activated to provide compressed air to the engine, promoting fuel combustion efficiency and ensuring more complete fuel combustion, allowing for more diesel injection and greater power output, thereby achieving higher vehicle power.

[0048] In some special scenarios, such as when the vehicle continues to operate in high-altitude areas, the power assist module can be started only when the second start condition is met to provide compressed air to the engine, thereby improving the engine's fuel combustion efficiency and meeting the vehicle's power requirements.

[0049] In one embodiment, as Figure 3 As shown, the judgment module is used to judge whether the power auxiliary module meets the activation condition of the first state;

[0050] The control system includes a third sensor, which obtains the opening and closing angle and duration of the brake pedal. When the opening and closing angle and duration of the brake pedal reach preset values, the activation conditions of the first state are met, and the power assist module is controlled to be in the first state.

[0051] For example, when emergency braking is required, the brake pedal is usually pressed to the bottom and maintained until the vehicle stops. In this embodiment, when the brake pedal reaches the set opening and closing angle and the brake pedal is continuously stepped on, the power assist module is controlled to be in the first state. It can be understood that the brake pedal does not have to be continuously stepped on at a certain opening and closing angle, but reaches the set opening and closing angle, and after reaching this opening and closing angle, the stepping time exceeds the preset time. During the preset time, the brake pedal only needs to be in the enabled state and does not have to be continuously stepped on at a certain opening and closing angle.

[0052] In a preferred embodiment, Figure 1As shown, the power auxiliary module includes an electric air compressor (500), a pressure reducer 600 and an intercooler 700 connected in sequence.

[0053] The power assist module is equipped with an electric air compressor 500 to achieve its power assist effect. The electric air compressor 500 is powered by an electrical connection. When the engine is underpowered in environments such as high altitudes, the supercharger cannot provide the engine with sufficient air to meet combustion requirements. An additional air supply method is required to ensure that the engine power increase is not limited by the supercharger. This solution uses the electric air compressor 500 to provide additional air to the engine for fuel combustion, thereby achieving higher engine power output. Compared with mechanical connection drive methods, the drive method of the electric air compressor 500 makes its placement more flexible. It does not need to be fixed to the engine and does not occupy the installation space of other components. It is simple to install and highly adaptable.

[0054] Furthermore, a pressure sensor is provided at the pressure reducer 600. The pressure sensor determines whether the pressure of the compressed air provided by the electric air compressor 500 exceeds the preset pressure to determine whether the current pressure is suitable for entering the engine, or the pressure sensor obtains the pressure at the engine and compares it with the pressure of the compressed air of the electric air compressor 500. If the pressure of the compressed air is too high, the pressure reducer 600 is controlled to reduce the pressure of the compressed air for use by the engine.

[0055] Furthermore, the power assist module includes a brake air tank 800 connected to the electric air compressor 500. When the second state ends and the second power supply line is connected, the electric air compressor 500 is connected to the brake air tank 800 and passes the remaining compressed air into the brake air tank 800.

[0056] Collects generated but unused compressed air for backup.

[0057] As a preferred implementation scheme of this embodiment, the control system is provided with a fourth sensor connected to the judgment module, and the fourth sensor is used to obtain the air pressure data in the brake air tank 800 and transmit it to the judgment module. The judgment module determines whether the brake air tank 800 is full based on the air pressure data. If it is full, a stop signal is sent to the control module, and the control module controls the second power supply line to disconnect.

[0058] In this embodiment, in the first state, the compressed air in the brake air tank 800 is used to provide power for the vehicle brakes. When the second state ends, the excess compressed air generated is introduced into the brake air tank 800. When the air tank is full, the second power supply line is disconnected, thereby improving the working efficiency of the second power supply line in a single connection.

[0059] In addition, after the brake assist module exits the first state, the judgment module determines whether the brake air tank 800 is full through the fourth sensor, that is, detects whether the air pressure reaches the preset value. If so, the second power supply line is disconnected; if not, compressed air is thrown into the brake air tank 800 until it reaches the preset value, and the second power supply line is disconnected.

[0060] It is understandable that the preset value monitored by the fourth sensor here can be set according to actual needs.

[0061] In one embodiment, the control system also includes a power module, which is used to obtain the power of the power battery 300. When the power of the power battery 300 is less than a first set power, the control module controls the generator 200 to charge the power battery 300. When the power of the power battery 300 reaches a second set power, charging is stopped; the second set power is not less than the first set power.

[0062] Preferably, the second set power level is the full power level of the battery, that is, charging stops when the power battery 300 is fully charged.

[0063] It is understandable that the control system includes a controller connected to each module, which is used to receive feedback signals from each module and send instructions. This can be achieved with the help of existing technologies.

[0064] This solution also includes an extended-range engine 100, including a control system as in any of the above embodiments. The extended-range engine 100 drives a generator 200 to generate electricity. The generator 200 is provided with a first charging circuit connected to a power battery 300 and a second charging circuit connected to a drive motor 400. The drive motor 400 provides driving force for the entire vehicle to move.

[0065] The generator 200 can always provide the driving motor 400 with driving power through the first charging line, so if the battery is in a charging state or the battery power is insufficient, the normal operation of the driving motor 400 is still guaranteed.

[0066] This solution also includes a vehicle comprising a range-extended engine 100 and a power battery 300. The range-extended engine 100 is equipped with a control system as described in any of the above embodiments. This control system assists in achieving high-powered operation of the range-extended engine 100, providing the vehicle with sufficient power for driving at high altitudes.

[0067] Anything not described in this application can be achieved by adopting or drawing on existing technologies.

[0068] The various embodiments in this specification are described in a progressive manner, and the same or similar parts between the various embodiments can be referred to each other. Each embodiment focuses on the differences from other embodiments.

[0069] The foregoing is merely an embodiment of the present application and is not intended to limit the present application. For those skilled in the art, the present application may have various changes and variations. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present application should all be included within the scope of the claims of the present application.

Claims

1. An extended-range engine control system, characterized in that: The range-extending engine (100) is used to charge the power battery (300); The control system comprises: a power auxiliary module, the power battery (300) is provided with a first power supply line connected to the drive motor (400) and a second power supply line connected to the power auxiliary module, and when the second power supply line is connected to the power auxiliary module, the power auxiliary module comprises an auxiliary service brake (900) to achieve a first state of vehicle braking and a second state of assisting the vehicle to move.

2. The control system according to claim 1, characterized in that: The control system further comprises: A judgment module, the judgment module is used to judge whether the power auxiliary module meets the activation condition of the second state, The activation conditions include: a first activation condition, wherein the control system is provided with a first sensor, the first sensor acquires the opening and closing angle and duration of the accelerator pedal, and when the opening and closing angle and duration of the accelerator pedal reach a preset value, the first activation condition is satisfied, and the power assist module is controlled to be in the second state; Second enabling condition: A second sensor is further provided, the second sensor is used to obtain the environmental altitude, and when the environmental altitude exceeds a preset altitude, the power auxiliary module is controlled to be in the second state; A control module, wherein the judgment module sends a signal to the control module when the range-extended engine (100) meets the first enabling condition or the second enabling condition, the control module controls the second power supply line to be connected, the power battery (300) supplies power to the power auxiliary module through the second power supply line, and the power auxiliary module is in the second state.

3. The control system according to claim 2, characterized in that: The judgment module is used to judge whether the power auxiliary module meets the activation condition of the first state; The control system includes a third sensor, which obtains the opening and closing angle and duration of the brake pedal. When the opening and closing angle and duration of the brake pedal reach preset values, the activation conditions of the first state are met, and the power assist module is controlled to be in the first state.

4. The control system according to claim 2, characterized in that: The power auxiliary module comprises an electric air compressor (500), a pressure reducer (600) and an intercooler (700) connected in sequence.

5. The control system according to claim 4, characterized in that: The power auxiliary module includes a brake air tank (800) connected to the electric air compressor (500); when the second state ends and the second power supply line is connected, the electric air compressor is connected to the brake air tank (800) and passes the remaining compressed air into the brake air tank (800).

6. The control system according to claim 5, characterized in that: The control system is provided with a fourth sensor connected to the judgment module, the fourth sensor being used to obtain air pressure data in the brake air reservoir (800) and transmit the data to the judgment module, the judgment module judging whether the brake air reservoir (800) is full based on the air pressure data, and if full, sending a stop signal to the control module, and the control module controlling the second power supply line to be disconnected.

7. The control system according to claim 2, characterized in that: The invention also includes an electric quantity module, which is used to obtain the electric quantity of the power battery (300). When the electric quantity of the power battery (300) is less than a first set electric quantity, the control module controls the generator (200) to charge the power battery (300). When the electric quantity of the power battery (300) reaches a second set electric quantity, the charging is stopped; and the second set electric quantity is not less than the first set electric quantity.

8. The control system according to claim 7, characterized in that: The second set power level is the full power level of the battery.

9. A range-extended engine, characterized in that: The invention comprises a control system according to any one of claims 1 to 8, wherein the range-extended engine (100) drives a generator (200) to generate electricity, the generator (200) is provided with a first charging circuit connected to the power battery (300) and a second charging circuit connected to a drive motor (400), and the drive motor (400) provides driving force for the entire vehicle to travel.

10. A vehicle comprising a range-extended engine (100) and a power battery (300), characterized in that: The range-extended engine (100) is provided with the control system according to claim 1.

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