Engine power management system and method

Abstract

The invention relates to an engine power supply management system and method, and belongs to the technical field of engine management.The engine power supply management system comprises an engine starting system, an external power supply system, a self-generating system, a standby battery system and an engine, and an engine starting power supply is electrically connected with an engine starting device; the power supply is used for supplying power to an engine starting device used for starting an engine; the external power supply system comprises an external power supply, and the external power supply is electrically connected with the engine starting power supply and used for charging the engine starting power supply; the self-generating system comprises a generator which is electrically connected with an engine starting power supply and used for charging the engine starting power supply. And the standby battery system comprises a storage battery, and the storage battery is electrically connected with the engine starting power supply and used for charging the engine starting power supply. It can be ensured that the engine can be normally started in various complex environments.

Description

Technical Field

[0001] The present invention relates to the technical field of engine management, and in particular to an engine power management system and method. Background Art

[0002] Due to the complexity of application scenarios, it is critical to ensure the normal start-up of non-mobile, long-term stationary, and intermittently running engine equipment.

[0003] When the engine is started, the engine starting power supply needs to have a large battery power to ensure that the engine starts successfully. After the battery has been idle for a long time, the battery voltage will drop and the power will be reduced due to self-discharge of the battery. Too low a voltage will cause the engine to fail to start normally. In the prior art, in order to ensure the normal start of the engine, an external power supply is connected to the engine. However, the external power supply continues to charge the engine starting power supply, which will cause battery damage. In addition, the external power supply is unstable. When the external power supply cannot supply power, the engine may still fail to start normally.

[0004] This shows that the prior art cannot guarantee the normal start of the engine. Summary of the invention

[0005] In view of this, it is necessary to provide an engine power management system and method to solve the problem that the prior art cannot ensure normal engine starting.

[0006] In order to solve the above problems, the present invention provides an engine power management system, including an engine starting system, an external power supply system, a self-generating system, a backup battery system and an engine, wherein: The engine starting system comprises an engine starting power supply and an engine starting device, wherein the engine starting power supply is electrically connected to the engine starting device and is used to supply power to the engine starting device, and the engine starting device is used to start the engine; The external power supply system includes an external power supply, the external power supply is electrically connected to the engine starting power supply, and is used to charge the engine starting power supply; The self-generating system includes a generator, the generator is electrically connected to the engine starting power supply, and is used to charge the engine starting power supply; A backup battery system, the backup battery system includes a battery, the battery is electrically connected to the engine starting power supply, and is used to charge the engine starting power supply.

[0007] In a possible implementation manner of the present invention, a voltage checking module is further included, which is used to detect the voltage value of the engine starting power supply.

[0008] In a possible implementation manner of the present invention, a power supply controller is further included, and the power supply controller is electrically connected to the voltage detection module and is used to receive the voltage value sent by the voltage detection module, wherein: The external power supply system further includes a charging switch, wherein the charging switch is electrically connected between the external power supply and the engine starting power supply; When the power supply controller detects that the voltage value of the engine starting power supply is lower than a preset charging voltage threshold, the charging switch is controlled to be closed.

[0009] In a possible implementation manner of the present invention, the self-generating system further comprises a voltage regulator, and the voltage regulator is electrically connected between the generator and the engine starting power supply; When the power controller detects that the voltage value of the engine starting power supply is lower than the preset charging voltage threshold and there is no external power supply, it controls the generator to start generating electricity. The output voltage of the generator is regulated by the voltage regulator to supply power to the engine starting power supply.

[0010] In a possible implementation manner of the present invention, the backup battery system further includes a battery switch, wherein the battery switch is electrically connected between the storage battery and the engine starting power supply; When the power controller detects that the voltage value of the engine starting power supply is lower than a preset charging voltage threshold, there is no external power supply and the generator fails to start, the battery switch is controlled to close.

[0011] In a possible implementation manner of the present invention, the engine power management system further includes a power output system, the power output system includes a clutch, the engine is connected to a static end of the clutch through a first transmission shaft, and the dynamic end of the clutch is connected to a load through a second transmission shaft; When the power controller detects that the voltage value of the engine starting power supply is lower than a preset charging voltage threshold and there is no external power supply, the static end of the clutch and the dynamic end of the clutch are controlled to separate.

[0012] In a possible implementation manner of the present invention, when the power controller detects that the voltage value of the engine starting power supply is greater than or equal to a preset full-charge voltage threshold, the charging switch is controlled to be disconnected.

[0013] In a possible implementation manner of the present invention, when the power controller detects that the voltage value of the engine starting power supply is greater than or equal to a preset full-charge voltage threshold, the generator is controlled to stop generating electricity.

[0014] In a possible implementation manner of the present invention, when the power controller detects that the voltage value of the engine starting power supply is greater than or equal to a preset full-charge voltage threshold, the battery switch is controlled to be disconnected.

[0015] The present invention further provides an engine power management method, applicable to the engine power management system described in any of the above embodiments, comprising: When it is detected that the voltage value of the engine starting power supply is less than a preset charging voltage threshold, charging the engine starting power supply through an external power supply; When the external power supply cannot charge the engine starting power supply, starting the generator to charge the engine starting power supply through the generator; When the generator cannot be started, a storage battery is used to charge the engine starting power supply.

[0016] The beneficial effects of the present invention are as follows: the engine power management system provided by the present invention is provided with an external power supply system, a self-generating system and a backup battery system. When the engine is left unused for a long time, it can be powered by the external power supply first. When the external power supply fails, it can be started by the self-generating system. When the self-generating system also fails to operate normally, it can also be started by the backup battery system. Setting up multiple starting power supplies can ensure that the engine can start normally in various complex environments. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative work.

[0018] Figure 1 A schematic diagram of the structure of an engine power management system provided by an embodiment of the present invention; Figure 2 A schematic diagram of the structure of a power output system provided by an embodiment of the present invention; Figure 3 A schematic diagram of a flow chart of an engine power management method provided by an embodiment of the present invention; Among them, 1-engine, 2-engine starting system, 3-backup battery system, 4-backup battery system, 5-external power supply system, 6-engine starting device, 7-engine starting power supply, 8-generator, 9-voltage regulation module, 10-external power supply, 11-charging switch, 12-battery switch, 13-battery, 14-voltage detection module, 15-power controller, 16-power output system, 17-clutch static end, 18-first transmission shaft, 19-clutch dynamic end, 20-second transmission shaft, 21-load. DETAILED DESCRIPTION

[0019] The preferred embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings, wherein the accompanying drawings constitute a part of the present invention and are used together with the embodiments of the present invention to illustrate the principles of the present invention, but are not used to limit the scope of the present invention.

[0020] The descriptions of "first", "second", etc. involved in the embodiments of the present invention are only for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the technical features defined as "first" and "second" may explicitly or implicitly include at least one of the features.

[0021] Reference to an "embodiment" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiment may be included in at least one embodiment of the present invention. The appearance of the phrase in various places in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0022] A specific embodiment of the present invention, as Figure 1 As shown, an engine power management system is disclosed, including an engine starting system, an external power supply system, a self-generating system, a backup battery system and an engine, wherein: The engine starting system includes an engine starting power supply and an engine starting device, wherein the engine starting power supply is electrically connected to the engine starting device and is used to supply power to the engine starting device, and the engine starting device is used to start the engine; The external power supply system includes an external power supply, which is electrically connected to the engine starting power supply and is used to charge the engine starting power supply; The self-generating system includes a generator, which is electrically connected to the engine starting power supply and is used to charge the engine starting power supply; The backup battery system includes a battery, which is electrically connected to the engine starting power supply and is used to charge the engine starting power supply.

[0023] In an embodiment of the present invention, an engine starting system is used to start an engine, and the engine starting system includes an engine starting power supply and an engine starting device. The engine starting power supply is a power storage device that can store electrical energy and is used to power the engine starting device. Further, the engine power management system also includes an external power supply system, the external power supply system includes an external power supply, the external power supply is electrically connected to the engine starting power supply, and the external power supply is used to charge the engine starting power supply when the power of the engine starting power supply is insufficient to start the engine; further, the engine power management system also includes a self-generating system, the self-generating system includes a generator, the generator is electrically connected to the engine starting power supply, and is used to generate electricity when the remaining power of the engine starting power supply is insufficient to start the engine and the external power supply cannot be used normally, and the engine starting power supply is charged by generating electricity; further, the engine power management system also includes a backup battery system, the backup battery system includes a battery, the battery is electrically connected to the engine starting power supply, and is used to provide electrical energy to the engine starting power supply when the remaining power of the engine starting power supply is insufficient to start the engine, the external power supply cannot be used normally, and the self-generating system cannot operate normally.

[0024] The engine power management system provided by the present invention is provided with an external power supply system, a self-generating system and a backup battery system. When the engine is left unused for a long time, it can be powered by the external power supply first. When the external power supply fails, it can be started by the self-generating system. When the self-generating system also fails to operate normally, it can also be started by the backup battery system. Setting up multiple starting power supplies can ensure that the engine can start normally in various complex environments.

[0025] Furthermore, the engine power management system also includes a voltage detection module, which is electrically connected to the engine starting power supply and is used to detect the voltage value of the engine starting power supply.

[0026] In an embodiment of the present invention, the voltage detection module has a voltage sampling circuit, which can accurately read the actual voltage value of the external power supply (AC or DC) and the starting power supply (DC) to realize the external voltage detection function. The power supply controller has a logic control circuit, which compares the actual voltage value with the set "charging start voltage value", "charging stop voltage value", the number of engine starts, etc., performs logical judgment and executes the corresponding function. The power supply controller has an output control circuit, which can control the conduction and disconnection of the electronically controlled clutch, switch, etc. The power supply controller has a communication circuit, which can exchange its own device status information with external devices through the communication module. The engine system and starting power supply are suitable for related equipment of various models and powers. Only the change of technical parameters is included in the scope of application of the present invention.

[0027] As a possible implementation mode of the present invention, in this implementation mode, Figure 1 As shown, the engine power management system also includes a power controller, which is electrically connected to the voltage detection module and is used to receive the voltage value sent by the voltage detection module, wherein: The external power supply system also includes a charging switch, which is electrically connected between the external power supply and the engine starting power supply; When the power controller detects that the voltage value of the engine starting power supply is lower than the preset charging voltage threshold, the charging switch is controlled to close.

[0028] In an embodiment of the present invention, the engine power management system also includes a power controller, which is used to control the charging strategy in the engine management system. Specifically, the external power system also includes a charging switch, which can be a relay switch or an electromagnetic induction switch. The charging switch is electrically connected between the external power supply and the engine starting power supply, and is used to control the on-off between the external power supply and the engine starting power supply. Specifically, when the power controller detects that the voltage value of the engine starting power supply is lower than a preset charging voltage threshold, indicating that the power of the engine starting power supply is insufficient to start the engine, the charging switch can be controlled to close, and the engine starting power supply is charged by the external power supply to ensure that the remaining power of the engine starting power supply can start the engine.

[0029] As a possible implementation of the present invention, in this implementation, the self-generating system further includes a voltage regulator, and the voltage regulator is electrically connected between the generator and the engine starting power supply; When the power controller detects that the voltage value of the engine starting power supply is lower than the preset charging voltage threshold and there is no external power supply, it controls the generator to start generating electricity. The output voltage of the generator is adjusted by the voltage regulator to supply power to the engine starting power supply.

[0030] In an embodiment of the present invention, a self-generating system is provided in the engine power management system. When the self-generating system generates electricity through a generator to charge the engine starting power supply, the voltage output by the generator may not match the charging voltage of the engine starting power supply. In this case, a voltage regulator may be electrically connected between the generator and the engine starting power supply. When the power controller detects that the voltage value of the engine starting power supply is lower than a preset charging voltage threshold and there is no external power supply, the generator is controlled to start generating electricity. The output voltage of the generator is adjusted by the voltage regulator to supply power to the engine starting power supply.

[0031] Further, the backup battery system also includes a battery switch, which is electrically connected between the battery and the engine starting power supply; When the power controller detects that the voltage value of the engine starting power supply is lower than the preset charging voltage threshold, there is no external power supply and the generator fails to start, the battery switch is controlled to close.

[0032] In an embodiment of the present invention, the backup battery system can supply power to the engine starting power supply through the battery. In order to prevent the battery from continuously supplying power, a battery switch can be set between the battery and the engine starting power supply, and the battery switch is used to control the on and off between the battery and the engine starting power supply; specifically, when the power controller detects that the voltage value of the engine starting power supply is lower than the preset charging voltage threshold, there is no external power supply and the generator fails to start, the battery switch is controlled to close, and the engine starting power supply is supplied with power by the battery to ensure normal starting of the engine.

[0033] As a possible implementation mode of the present invention, in this implementation mode, Figure 2 As shown, the engine power management system also includes a power output system, the power output system includes a clutch, the engine is connected to the static end of the clutch through a first transmission shaft, and the dynamic end of the clutch is connected to the load through a second transmission shaft; When the power controller detects that the voltage value of the engine starting power supply is lower than the preset charging voltage threshold and there is no external power supply, the static end of the clutch and the dynamic end of the clutch are controlled to separate.

[0034] In an embodiment of the present invention, the engine power management system also includes a power output system, which is used to output power through the engine output shaft to drive the load. Specifically, the power output system includes a clutch, the engine is connected to the static end of the clutch through a first transmission shaft, and the dynamic end of the clutch is connected to the load through a second transmission shaft.

[0035] Furthermore, when the self-generating system needs to generate electricity to charge the engine starting power supply, the engine should still have the ability to start. At this time, the voltage detection module detects that the remaining power of the engine starting power supply is not much, and the engine cannot be started multiple times, and the external power supply cannot charge the engine starting power supply. It is necessary to self-charge through the self-generating mode. At this time, the clutch needs to be disconnected first, such as moving the moving end of the clutch backward, disconnecting the load from the engine output shaft, and then starting the engine to enter no-load operation. The small generator in the engine system runs to convert the chemical energy of the fuel into electrical energy, which is stored in the engine starting power supply after being processed by the voltage regulator to achieve self-running charging.

[0036] As a possible implementation manner of the present invention, in this implementation manner, when the power controller detects that the voltage value of the engine starting power supply is greater than or equal to a preset full-charge voltage threshold, the charging switch is controlled to be disconnected.

[0037] In an embodiment of the present invention, when an external power supply is used to charge the engine starting power supply, if the voltage value of the engine starting power supply detected by the voltage detection module is greater than or equal to the preset full-charge voltage threshold, it means that the engine starting power supply is fully charged at this time. The power controller can control the charging switch to disconnect to disconnect the external power supply from the engine starting power supply to prevent the engine starting power supply from overcharging.

[0038] Furthermore, when the power controller detects that the voltage value of the engine starting power supply is greater than or equal to a preset full-charge voltage threshold, the generator is controlled to stop generating electricity.

[0039] Similarly, when the self-generating system is used to charge the engine starting power supply, when the engine starting power supply is fully charged, the engine is controlled to stop charging to prevent the engine starting power supply from being overcharged.

[0040] Furthermore, when the power controller detects that the voltage value of the engine starting power supply is greater than or equal to a preset full-charge voltage threshold, the battery switch is controlled to be disconnected.

[0041] Similarly, when a backup battery system is used to charge the engine starting power supply, when the engine starting power supply is fully charged, the power controller can control the battery switch to disconnect to disconnect the battery from the engine starting power supply to prevent the engine starting power supply from overcharging.

[0042] The embodiment of the present invention sets a voltage detection module, and when it is checked that the voltage value of the engine starting power supply is too low, a multiple charging system is used to charge the engine starting power supply, and when the engine starting power supply is full, the charging is disconnected, so as to ensure that the power of the engine starting power supply meets the requirements for starting the engine and will not be overcharged, thereby ensuring the safety of the engine starting power supply and prolonging the service life of the engine starting power supply.

[0043] As a possible implementation mode of the present invention, in this implementation mode, Figure 3 As shown, an engine power management method is provided, which is applicable to the engine power management system in any of the above embodiments, including: S301, when it is detected that the voltage value of the engine starting power supply is less than a preset charging voltage threshold, charging the engine starting power supply through an external power supply; S302, when the external power supply cannot charge the engine starting power supply, starting the generator to charge the engine starting power supply through the generator; S303, when the generator cannot be started, the battery is used to charge the engine starting power supply.

[0044] In an embodiment of the present invention, the engine power management method provided can manage the charging strategy of the engine starting power supply. Specifically, the power management strategy mainly includes three modes: external power supply charging mode, self-running charging mode, and backup battery access, and the action management is performed in a logical order. When the power controller detects that an external power supply is connected to the engine starting power supply, the external power supply charging mode is executed first. After the power controller detects that the voltage of the engine starting power supply is lower than the set charging start voltage value, the external charging mode is started, and the charging switch is controlled to be closed. The external power supply enters the charger after passing through the power controller, is connected to the engine starting power supply, and starts charging. During the charging process, it is continuously monitored whether the external power supply is connected. Once it is detected that the external power supply is disconnected, the external power supply charging mode is terminated. At the same time, the engine starting power supply voltage is sampled and judged. After detecting that the starting power supply voltage is higher than the set "charging stop voltage value", the power controller disconnects the charging switch and stops the external power supply charging mode. After the power controller detects that the external power supply is not connected and the starting power supply voltage is lower than the set "charging start voltage value", the "self-running charging mode" is started. First, the moving end of the electronically controlled clutch is moved backward, the load end is disconnected from the engine output shaft, and then the engine is started to enter no-load operation. The small generator in the engine system runs to convert the chemical energy of the fuel into electrical energy, which is stored in the starting power supply after being processed by the voltage regulator. The starting power supply is charged by the small generator to realize the self-running charging function. After the power controller detects that the external power supply is not connected and the starting power supply voltage is lower than the set charging start voltage value, and the engine self-running charging mode fails to operate normally, the external backup battery mode is entered. After the engine fails to start in the self-running charging mode, the battery switch is closed, the backup battery is connected in parallel with the starting power supply, and the engine starting system is powered at the same time, and the engine is started again to realize the self-running charging function. If the engine fails to start three times in a row in the external backup battery mode, an alarm signal is output to prompt system inspection and maintenance.

[0045] The present invention is suitable for controlling the power supply amount when the engine equipment is stationary for a long time or runs intermittently. The developed power management device can solve the problem that the engine equipment in non-road conditions has no external power input for a long time, resulting in the starting power supply voltage being unable to complete the engine starting. The engine has a combination of multiple charging modes such as external charging, self-running charging, and backup battery parallel connection to ensure the charging stability of the engine. The external battery power can be quickly connected to expand the battery capacity to achieve a rapid emergency starting effect. The power management system can disengage the load end through the clutch and run the engine system alone, converting chemical energy into electrical energy to charge the starting power supply, thereby achieving an adaptive power management effect. The power management system has an automatic inspection function, and automatically alarms when the charging strategy or system operation is abnormal, thereby reducing daily inspection work.

[0046] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that can be easily conceived by any technician familiar with the technical field within the technical scope disclosed by the present invention should be covered within the protection scope of the present invention.

Claims

1. An engine power management system, characterized in that: It includes engine starting system, external power supply system, self-generating system, backup battery system and engine, among which, The engine starting system comprises an engine starting power supply and an engine starting device, wherein the engine starting power supply is electrically connected to the engine starting device and is used to supply power to the engine starting device, and the engine starting device is used to start the engine; The external power supply system includes an external power supply, the external power supply is electrically connected to the engine starting power supply, and is used to charge the engine starting power supply; The self-generating system includes a generator, the generator is electrically connected to the engine starting power supply, and is used to charge the engine starting power supply; A backup battery system, the backup battery system includes a battery, the battery is electrically connected to the engine starting power supply, and is used to charge the engine starting power supply.

2. The engine power management system according to claim 1, characterized in that: It also includes a voltage checking module, which is used to detect the voltage value of the engine starting power supply.

3. The engine power management system according to claim 1, characterized in that: It also includes a power controller, which is electrically connected to the voltage detection module and is used to receive the voltage value sent by the voltage detection module, wherein: The external power supply system further includes a charging switch, wherein the charging switch is electrically connected between the external power supply and the engine starting power supply; When the power supply controller detects that the voltage value of the engine starting power supply is lower than a preset charging voltage threshold, the charging switch is controlled to be closed.

4. The engine power management system according to claim 3, characterized in that: The self-generating system further comprises a voltage regulator, the voltage regulator being electrically connected between the generator and the engine starting power supply; When the power controller detects that the voltage value of the engine starting power supply is lower than the preset charging voltage threshold and there is no external power supply, it controls the generator to start generating electricity. The output voltage of the generator is regulated by the voltage regulator to supply power to the engine starting power supply.

5. The engine power management system according to claim 4, characterized in that: The backup battery system further comprises a battery switch, wherein the battery switch is electrically connected between the storage battery and the engine starting power supply; When the power controller detects that the voltage value of the engine starting power supply is lower than a preset charging voltage threshold, there is no external power supply and the generator fails to start, the battery switch is controlled to close.

6. The engine power management system according to claim 4, characterized in that: The engine power management system further includes a power output system, the power output system includes a clutch, the engine is connected to a static end of the clutch through a first transmission shaft, and the dynamic end of the clutch is connected to a load through a second transmission shaft; When the power controller detects that the voltage value of the engine starting power supply is lower than a preset charging voltage threshold and there is no external power supply, the static end of the clutch and the dynamic end of the clutch are controlled to separate.

7. The engine power management system according to claim 3, characterized in that: When the power controller detects that the voltage value of the engine starting power supply is greater than or equal to a preset full-charge voltage threshold, the charging switch is controlled to be disconnected.

8. The engine power management system according to claim 4, characterized in that: When the power supply controller detects that the voltage value of the engine starting power supply is greater than or equal to a preset full-power voltage threshold, the generator is controlled to stop generating electricity.

9. The engine power management system according to claim 5, characterized in that: When the power controller detects that the voltage value of the engine starting power supply is greater than or equal to a preset full-charge voltage threshold, the battery switch is controlled to be disconnected.

10. An engine power management method, characterized in that: The engine power management system applicable to any one of claims 1 to 9 comprises: When it is detected that the voltage value of the engine starting power supply is less than a preset charging voltage threshold, charging the engine starting power supply through an external power supply; When the external power supply cannot charge the engine starting power supply, starting the generator to charge the engine starting power supply through the generator; When the generator cannot be started, a storage battery is used to charge the engine starting power supply.

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