Oil-electricity hybrid power control system

Abstract

The utility model provides an oil-electricity hybrid power control system, which is suitable for a vehicle and comprises a storage battery, an integrated starter generator coupled to the engine; the hybrid power controller is used for receiving at least one of an accelerator opening degree signal, a brake signal, an engine rotating speed signal, a storage battery voltage signal, a starting signal and an idling stop signal and determining whether to perform one of a starting mode, a charging mode, an auxiliary power judgment mode, a regenerative charging judgment mode and an idling stop judgment mode according to the at least one of the accelerator opening degree signal, the brake signal, the engine rotating speed signal, the storage battery voltage signal, the starting signal and the idling stop signal; when the hybrid power controller is in a charging mode, the integrated starter generator is driven by the engine to generate and output a first AC voltage to the hybrid power controller, so that the hybrid power controller performs switching voltage regulation control according to the first AC voltage to generate output power to charge the storage battery and the vehicle load.

Description

Technical Field

[0001] The utility model relates to a power control system, in particular to an oil-electric hybrid power control system. Background Art

[0002] Existing motorcycles use a short-circuit voltage regulation architecture for charging control, which results in low charging efficiency and high ripple. Furthermore, the integrated starter-generator system in existing motorcycles cannot effectively control battery charging and deliver just the right amount of power to the vehicle load. Excess power is wasted as heat, and the system is unable to provide auxiliary power to assist the vehicle. Therefore, improvements are needed to the existing motorcycle charging and power control mechanisms. Utility Model Content

[0003] Therefore, the purpose of the present invention is to provide a hybrid electric vehicle control system that can overcome the shortcomings of the prior art.

[0004] Therefore, the hybrid power control system of the present invention is applicable to a vehicle and includes a battery, an engine, an integrated starter generator coupled to the engine, and a hybrid power controller.

[0005] The hybrid power controller is coupled to the battery, the integrated starter generator, and the vehicle load, and is used to receive at least one of a throttle opening signal, a brake signal, an engine speed signal, a battery voltage signal, a start signal, and an idle shutdown signal, and accordingly determine whether to perform one of a start mode, a charging mode, an auxiliary power determination mode, a regenerative charging determination mode, and an idle shutdown determination mode.

[0006] When the hybrid controller performs the charging mode, the integrated starter generator is driven by the engine to generate and output a first AC voltage to the hybrid controller, so that the hybrid controller performs switching voltage regulation control at least according to the first AC voltage to generate output power to power the battery and the vehicle load.

[0007] In some embodiments, in the hybrid power control system of the present invention, when the hybrid power controller receives the start signal, the hybrid power controller performs the start mode, and the hybrid power controller is powered by the battery to drive the integrated starter generator, so that the integrated starter generator starts the engine.

[0008] In some embodiments, in the hybrid power control system of the present invention, when the hybrid power controller receives the engine speed signal, the hybrid power controller performs the charging mode, and also receives the battery voltage signal, and performs the switching voltage regulation control according to the first AC voltage and the battery voltage signal to generate the output power, and the output power changes with the vehicle load to provide appropriate power.

[0009] In some embodiments, in the hybrid power control system of the present invention, when the hybrid power controller receives the throttle opening signal, the engine speed signal and the battery voltage signal, the hybrid power controller performs the auxiliary power judgment mode to judge whether to provide auxiliary power based on the throttle opening signal, the engine speed signal and the battery voltage signal. When the judgment is yes, the hybrid power controller receives the auxiliary voltage from the battery and drives the integrated starter generator according to the auxiliary voltage, so that the integrated starter generator drives the engine to provide the auxiliary power to the vehicle.

[0010] In some embodiments, in the hybrid power control system of the present invention, when the throttle opening voltage value of the throttle opening signal is greater than the default throttle opening voltage value, the speed value of the engine speed signal is within the preset speed range value, and the voltage value of the battery voltage signal is greater than or equal to the default starting voltage value, the hybrid power controller determines to provide the auxiliary power.

[0011] In some embodiments, in the hybrid power control system of the present invention, when the hybrid power controller receives the throttle opening signal, the brake signal, the engine speed signal and the battery voltage signal, the hybrid power controller performs the regenerative charging judgment mode to judge whether to perform regenerative charging based on the throttle opening signal, the brake signal, the engine speed signal and the battery voltage signal. When the judgment is yes, the integrated starter generator is driven by the engine to generate and output a second AC voltage to the hybrid power controller, so that the hybrid power controller performs the switching voltage regulation control according to the second AC voltage to generate regenerative power to charge the battery.

[0012] In some embodiments, in the hybrid power control system of the present invention, when the throttle opening signal is the fully closed voltage of the throttle position sensor, and the speed value of the engine speed signal is greater than the preset idle speed value and the voltage value of the battery voltage signal is less than the default full charge voltage value, the hybrid power controller determines to perform the regenerative charging.

[0013] In some embodiments, in the hybrid power control system of the present invention, when the hybrid power controller receives the idle shutdown signal, the hybrid power controller performs the idle shutdown judgment mode to judge whether the vehicle enters the idle shutdown state according to the altitude of the vehicle and the current vehicle operating status. When the judgment is yes, the vehicle enters the idle shutdown state.

[0014] In some embodiments, in the hybrid power control system of the present invention, when the altitude is lower than a preset altitude and the current vehicle operating state meets the preset vehicle operating state, the hybrid power controller determines to enter the idle shutdown state.

[0015] The effect of the present utility model is that: the hybrid power controller is used to perform one of the starting mode, the charging mode, the auxiliary power judgment mode, the regenerative charging judgment mode and the idle shutdown judgment mode, and the switching voltage regulation control is used and optimized control is performed according to the throttle opening signal, the brake signal, the engine speed signal, the battery voltage signal and the idle shutdown signal. In response to the demand of the vehicle load, a corresponding variable recharge current can be provided, so that the charging efficiency is increased, and the auxiliary power can be provided more efficiently to provide the vehicle with assistance. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required to be used in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0017] Figure 1 This is a system configuration diagram illustrating an embodiment of the hybrid power control system of the present invention.

[0018] Figure 2 is a timing diagram illustrating a usage state of the embodiment.

[0019] Reference numerals

[0020] 1 battery

[0021] 2 Engine

[0022] 3 Integrated starter generator

[0023] 4 Hybrid Power Controller

[0024] 5 Vehicle load

[0025] 10 Hybrid Power Control System

[0026] S1 Throttle opening signal

[0027] S2 brake signal

[0028] S3 Engine speed signal

[0029] S4 battery voltage signal

[0030] S5 start signal

[0031] S6 Idle stop signal

[0032] Time points t0 to t11 DETAILED DESCRIPTION

[0033] See Figure 1 , describing an embodiment of a hybrid electric vehicle control system 10 of the present invention. The hybrid electric vehicle control system 10 is applicable to a vehicle (not shown) and includes a battery 1, an engine 2, an integrated starter generator (ISG) 3, and a hybrid power controller 4. The hybrid electric vehicle control system 10 may be a hybrid electric vehicle (ISG) starting and generating power, auxiliary power, and idle stop system. The hybrid power controller 4 is an ISG hybrid power controller. The vehicle may be, for example, a gasoline vehicle or a hybrid electric vehicle.

[0034] The integrated starter generator 3 is coupled to the engine 2. During startup, the integrated starter generator 3 functions as an electric motor to start the engine 2. After the engine 2 is started, the integrated starter generator 3 functions as a generator to generate electricity driven by the engine 2.

[0035] The hybrid controller 4 is coupled to the battery 1, the integrated starter-generator 3, and a vehicle load 5. It receives at least one of a throttle position signal S1, a brake signal S2, an engine speed signal S3, a battery voltage signal S4, a start signal S5, and an idle stop signal S6, and accordingly determines whether to engage in one of a start mode, a charging mode, an auxiliary power determination mode, a regenerative charging determination mode, and an idle stop determination mode. In this embodiment, the throttle position signal S1 is obtained by a throttle position sensor (TPS) when the driver turns the throttle. The brake signal S2 is obtained by the driver pressing the brake lever. The engine speed signal S3 and the idle stop signal S6 are, for example, obtained from an engine control unit. The engine speed signal S3 can be used to determine whether the clutch is engaged. The start signal S5 is obtained by pressing the vehicle's start switch. The battery voltage signal S4 is, for example, obtained by measuring the charge level of the battery 1 using a voltage meter.

[0036] Further reading Figure 2 The following describes the operation of the hybrid power control system 10 of this embodiment, but is not limited thereto.

[0037] When the hybrid controller 4 receives the start signal S5, the hybrid controller 4 performs the start mode (for example, time point t0~t1), and the hybrid controller 4 is powered by the battery 1 to drive the integrated starter generator 3, so that the integrated starter generator 3 starts the engine 2, causing the engine 2 speed to gradually increase to complete the start procedure.

[0038] When the hybrid controller 4 does not receive the start signal S5 but receives the engine speed signal S3 (i.e., after the engine 2 has started), the hybrid controller 4 enters the charging mode for normal riding (e.g., time points t2-t3 and time points t5-t6). At this time, the integrated starter-generator 3 is driven by the engine 2 to generate and output a first AC voltage to the hybrid controller 4. The hybrid controller 4 also receives the battery voltage signal S4 and performs a switching (open-loop) voltage regulation control based on the first AC voltage and the battery voltage signal S4 to generate output power to power the battery 1 and the vehicle load 5. It should be noted that, since the hybrid controller 4 can know the demand of the vehicle load 5 based on the change in the charge of the battery voltage signal S4, the output power generated by the switching voltage regulation control based on the first AC voltage and the battery voltage signal S4 can change with the change of the vehicle load 5. In this way, the hybrid controller 4 can provide a corresponding variable recharge current in response to the demand of the vehicle load 5, so that the charging efficiency of the battery 1 and the vehicle load 5 is improved, the unnecessary magnetic resistance of the engine 2 is reduced, and the performance of the engine 2 is improved. In addition, since the hybrid controller 4 uses switching voltage regulation control for charging control, the power generation efficiency of the hybrid controller 4 can be increased and the ripple is lower, which is more energy-saving. The switching voltage regulation control is, for example, related to the voltage regulation switching of a three-phase full-bridge circuit.

[0039] When the hybrid power controller 4 receives the throttle opening signal S1, the engine speed signal S3 and the battery voltage signal S4, the hybrid power controller 4 performs the auxiliary power judgment mode to judge whether to provide an auxiliary power based on the throttle opening signal S1, the engine speed signal S3 (used to know whether the clutch is engaged or not) and the battery voltage signal S4. When the judgment is yes (for example, time point t4~t5), the hybrid power controller 4 receives an auxiliary voltage from the battery 1 and drives the integrated starter generator 3 according to the auxiliary voltage, so that the integrated starter generator 3 drives the engine 2 to provide the auxiliary power to the vehicle. In this embodiment, the hybrid controller 4 determines that auxiliary power is required (i.e., it is necessary to provide auxiliary power) only when the throttle voltage value of the throttle opening signal S1 is greater than a default throttle opening voltage value, the engine speed signal S3 is within a preset speed range, and the battery voltage signal S4 is greater than or equal to a default starting voltage value (but not limited thereto). This optimizes control, ensures the effectiveness of auxiliary power output, and enhances the vehicle's ride performance. It should be noted that the auxiliary power provision mode is terminated after the auxiliary power provision is completed, or when the throttle voltage value of the throttle opening signal S1 falls below the default throttle opening voltage value, or when the driver applies the brakes. Furthermore, the hybrid controller 4 is triggered to receive an auxiliary voltage from the battery 1 for a predetermined rest period of time before it is next triggered to ensure that the battery 1 has sufficient charge to provide auxiliary power to the vehicle again.

[0040] When the hybrid power controller 4 receives the throttle opening signal S1, the brake signal S2, the engine speed signal S3 and the battery voltage signal S4, the hybrid power controller 4 performs the regenerative charging judgment mode to judge whether to perform regenerative charging according to the throttle opening signal S1, the brake signal S2, the engine speed signal S3 and the battery voltage signal S4. When the judgment is yes (for example, time point t9~t10), the integrated starter generator 3 is driven by the engine 2 to generate and output a second AC voltage to the hybrid power controller 4, so that the hybrid power controller 4 performs the switching voltage regulation control according to the second AC voltage to generate regenerative power to charge the battery 1. In this embodiment, when the throttle opening signal S1 is a throttle position sensor fully closed voltage, or the throttle opening signal S1 is the throttle position sensor fully closed voltage and the driver presses the brake lever, and the speed value of the engine speed signal S3 is greater than a preset idle speed value and the voltage value of the battery voltage signal S4 is less than a default full charge voltage value (but not limited to this), the hybrid power controller 4 determines to perform the regenerative charging to achieve optimized control and thereby enhance the energy recovery function.

[0041] When the hybrid power controller 4 receives the idle stop signal S6, it performs the idle stop determination mode to determine whether the vehicle has entered an idle stop state based on the vehicle's altitude and a current vehicle operating state. If the determination is yes (e.g., between time points t10 and t11), the vehicle enters the idle stop state. To restart the vehicle, simply press the brake pedal and rotate the accelerator to trigger the start function. In this embodiment, the hybrid power controller 4 determines that the vehicle has entered the idle stop state when the altitude is lower than a preset altitude and the current vehicle operating state meets a preset vehicle operating state (i.e., the battery voltage, engine temperature, vehicle speed, engine speed, and throttle opening each meet a preset threshold).

[0042] In summary, the hybrid power control system 10 of the present invention can be used to perform one of the starting mode, the charging mode, the auxiliary power determination mode, the regenerative charging determination mode, and the idle shutdown determination mode, and utilizes switchable voltage regulation control and optimized control based on the throttle opening signal S1, the brake signal S2, the engine speed signal S3, the battery voltage signal S4, and the idle shutdown signal S6. In response to the needs of the vehicle load 5, a corresponding variable recharge current can be provided to increase the charging efficiency, and the auxiliary power can be provided more efficiently to provide the vehicle assistance, and the charging of the battery 1 can be more effectively controlled to supply appropriate power to the vehicle load 5.

[0043] The present invention has been described above using preferred embodiments. However, those skilled in the art will appreciate that these embodiments are intended only to illustrate the present invention and should not be construed as limiting its scope. It should be noted that any equivalent variations and substitutions to the aforementioned embodiments are intended to be encompassed within the scope of the present invention. Therefore, the scope of protection of the present invention shall be determined by the scope defined in the claims.

Claims

1. A hybrid electric power control system, suitable for a vehicle, characterized in that: The hybrid power control system includes: batteries; engine; an integrated starter generator coupled to the engine; and a hybrid power controller coupled to the battery, the integrated starter generator, and a vehicle load, for receiving at least one of a throttle position signal, a brake signal, an engine speed signal, a battery voltage signal, a start signal, and an idle stop signal, and determining whether to perform one of a start mode, a charging mode, an auxiliary power determination mode, a regenerative charging determination mode, and an idle stop determination mode based on the received signal; In which, when the hybrid power controller performs the charging mode, the integrated starter generator is driven by the engine to generate and output a first AC voltage to the hybrid power controller, so that the hybrid power controller performs switching voltage regulation control at least according to the first AC voltage to generate output power to power the battery and the vehicle load.

2. The hybrid power control system according to claim 1, characterized in that: When the hybrid controller receives the start signal, the hybrid controller performs the start mode, and the hybrid controller drives the integrated starter generator (ISG) powered by the battery, so that the ISG starts the engine.

3. The hybrid power control system according to claim 1, characterized in that: When the hybrid power controller receives the engine speed signal, the hybrid power controller performs the charging mode, and also receives the battery voltage signal, and performs the switching voltage regulation control according to the first AC voltage and the battery voltage signal to generate the output power, and the output power changes with the vehicle load.

4. The hybrid power control system according to claim 1, characterized in that: When the hybrid power controller receives the throttle opening signal, the engine speed signal and the battery voltage signal, the hybrid power controller performs the auxiliary power judgment mode to judge whether to provide auxiliary power based on the throttle opening signal, the engine speed signal and the battery voltage signal. When the judgment is yes, the hybrid power controller receives the auxiliary voltage from the battery and drives the integrated starter generator based on the auxiliary voltage, so that the integrated starter generator drives the engine to provide the auxiliary power to the vehicle.

5. The hybrid power control system according to claim 4, characterized in that: When the throttle opening voltage value of the throttle opening signal is greater than the default throttle opening voltage value, the speed value of the engine speed signal is within the preset speed range value, and the voltage value of the battery voltage signal is greater than or equal to the default starting voltage value, the hybrid power controller determines to provide the auxiliary power.

6. The hybrid power control system according to claim 1, characterized in that: When the hybrid power controller receives the throttle opening signal, the brake signal, the engine speed signal and the battery voltage signal, the hybrid power controller performs the regenerative charging judgment mode to judge whether to perform regenerative charging based on the throttle opening signal, the brake signal, the engine speed signal and the battery voltage signal. When the judgment is yes, the integrated starter generator is driven by the engine to generate and output a second AC voltage to the hybrid power controller, so that the hybrid power controller performs the switching voltage regulation control according to the second AC voltage to generate regenerative power to charge the battery.

7. The hybrid power control system according to claim 6, characterized in that: When the throttle opening signal is the fully closed voltage of the throttle position sensor, the speed value of the engine speed signal is greater than the preset idle speed value, and the voltage value of the battery voltage signal is less than the default fully charged voltage value, the hybrid power controller determines to perform the regenerative charging.

8. The hybrid power control system according to claim 1, characterized in that: When the hybrid power controller receives the idle shutdown signal, the hybrid power controller performs the idle shutdown judgment mode to judge whether the vehicle enters the idle shutdown state according to the altitude of the vehicle and the current vehicle operating state. When the judgment is yes, the vehicle enters the idle shutdown state.

9. The hybrid power control system according to claim 8, characterized in that: When the altitude is lower than a preset altitude and the current vehicle operating state meets a preset vehicle operating state, the hybrid power controller determines to enter the idle stop state.

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