Engine power management system

Abstract

The utility model relates to an engine power supply management system, which belongs to the technical field of engine management and comprises an engine starting system, an external power supply system, a self-generating system, a standby battery system and an engine. 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. According to the utility model, the engine can be normally started in various complex environments.

Description

Technical Field

[0001] The utility model relates to the technical field of engine management, in particular to an engine power management system. Background Art

[0002] Due to the complexity of application scenarios, it is critical to ensure the normal startup 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 existing technology, in order to ensure the normal start of the engine, the engine is connected to an external power supply. However, the external power supply continuously charges the engine starting power supply, which will cause battery damage, and 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 existing technology cannot guarantee the normal start of the engine. Utility Model Content

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

[0006] In order to solve the above problems, the utility model 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:

[0007] 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;

[0008] 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;

[0009] The self-generating system includes a generator, the generator being electrically connected to the engine starting power supply and configured to charge the engine starting power supply;

[0010] A 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.

[0011] 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.

[0012] In a possible implementation manner of the present invention, a power supply controller is further included. The power supply controller is electrically connected to the voltage detection module and is configured to receive a voltage value sent by the voltage detection module.

[0013] The external power supply system further includes a charging switch electrically connected between the external power supply and the engine starting power supply;

[0014] When the power supply controller detects that the voltage value of the engine starting power supply is lower than a preset charging voltage threshold, it controls the charging switch to be closed.

[0015] In a possible embodiment of the present invention, the self-generating system further includes a voltage regulator, wherein the voltage regulator is electrically connected between the generator and the engine starting power supply;

[0016] 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.

[0017] 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 battery and the engine starting power supply;

[0018] 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.

[0019] In a possible embodiment of the present invention, the engine power management system further includes a power output system, the power output system including a clutch, the engine is connected to the static end of the clutch via a first transmission shaft, and the dynamic end of the clutch is connected to the load via a second transmission shaft;

[0020] 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.

[0021] 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.

[0022] 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.

[0023] 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.

[0024] The present invention further provides an engine power management method, applicable to the engine power management system described in any of the aforementioned embodiments, comprising:

[0025] 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;

[0026] 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;

[0027] When the generator fails to start, the battery is used to charge the engine starting power supply.

[0028] 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 idle 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

[0029] 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.

[0030] Figure 1 A schematic diagram of the structure of an engine power management system provided by an embodiment of the utility model;

[0031] Figure 2 A schematic structural diagram of a power output system provided by an embodiment of the present utility model;

[0032] 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

[0033] 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, and are not used to limit the scope of the present invention.

[0034] The terms "first," "second," and so on, used in the embodiments of this utility model are for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, technical features designated as "first" or "second" may explicitly or implicitly include at least one such feature.

[0035] References to "embodiments" herein mean that a particular feature, structure, or characteristic described in connection with the embodiments may be included in at least one embodiment of the present invention. The appearance of this phrase in various places in the specification does not necessarily refer to the same embodiment, nor does it constitute an independent or alternative embodiment that is mutually exclusive of other embodiments. It is understood, both explicitly and implicitly, by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0036] A specific embodiment of the present invention is as follows 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:

[0037] The engine starting system includes an engine starting power supply and an engine starting device. The engine starting power supply is electrically connected to the engine starting device and is used to supply power to the engine starting device. The engine starting device is used to start the engine.

[0038] 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;

[0039] The self-generating system includes a generator electrically connected to the engine starting power supply for charging the engine starting power supply;

[0040] 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.

[0041] In an embodiment of the present invention, an engine starting system is used to start an engine. 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 for powering the engine starting device. Furthermore, the engine power management system also includes an external power supply system, the external power supply system including an external power supply electrically connected to the engine starting power supply, the external power supply being configured to charge the engine starting power supply when the power level of the engine starting power supply is insufficient to start the engine. Furthermore, the engine power management system also includes a self-generating system, the self-generating system including a generator electrically connected to the engine starting power supply, configured to generate electricity to charge the engine starting power supply when the remaining power level of the engine starting power supply is insufficient to start the engine and the external power supply is not functioning properly. Furthermore, the engine power management system also includes a backup battery system, the backup battery system including a battery electrically connected to the engine starting power supply, configured to provide electrical energy to the engine starting power supply when the remaining power level of the engine starting power supply is insufficient to start the engine, the external power supply is not functioning properly, and the self-generating system is not functioning properly.

[0042] The engine power management system provided by the utility model is provided with an external power supply system, a self-generating system and a backup battery system. When the engine is left idle for a long time, it can be powered by the external power supply first. When the external power supply fails, the self-generating system can be used to generate electricity and start the engine. When the self-generating system also fails to operate normally, the backup battery system can also be used to start the engine. The multiple starting power supplies can ensure that the engine can start normally in various complex environments.

[0043] 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.

[0044] In an embodiment of the present utility model, 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 power. Only the changes in technical parameters are included in the scope of application of the present utility model.

[0045] As a possible implementation of the present invention, in this implementation, if 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,

[0046] The external power supply system also includes a charging switch electrically connected between the external power supply and the engine starting power supply;

[0047] When the power supply controller detects that the voltage value of the engine starting power supply is lower than the preset charging voltage threshold, it controls the charging switch to be closed.

[0048] In an embodiment of the utility model, 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 supply 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 and 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 the preset charging voltage threshold, indicating that the power of the engine starting power supply is insufficient to start the engine, it can control the charging switch to close, and charge the engine starting power supply through the external power supply to ensure that the remaining power of the engine starting power supply can start the engine.

[0049] As a possible embodiment of the present invention, in this embodiment, the self-generating system further includes a voltage regulator, which is electrically connected between the generator and the engine starting power supply;

[0050] When the power controller detects that the voltage 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.

[0051] In an embodiment of the present utility model, 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 can 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.

[0052] Furthermore, the backup battery system further includes a battery switch electrically connected between the battery and the engine starting power supply;

[0053] When the power controller detects that the voltage 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.

[0054] In an embodiment of the present utility model, 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. 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 through the battery to ensure normal starting of the engine.

[0055] As a possible implementation of the present invention, in this implementation, if Figure 2 As shown, the engine power management system further includes a power output system, which 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;

[0056] 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.

[0057] 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.

[0058] Furthermore, when the self-generation system is needed 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. The external power supply cannot charge the engine starting power supply, and self-charging is required through the self-generation 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 processed by the voltage regulator and stored in the engine starting power supply to achieve self-operation charging.

[0059] As a possible implementation of the present invention, in this implementation, 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.

[0060] In an embodiment of the present utility model, 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.

[0061] 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.

[0062] 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.

[0063] 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.

[0064] 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.

[0065] The embodiment of the utility model is provided with a voltage detection module. When it is detected 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. When the engine starting power supply is fully charged, the charging is disconnected, thereby ensuring that the power level of the engine starting power supply meets the requirements for starting the engine without overcharging, thereby ensuring the safety of the engine starting power supply and improving the service life of the engine starting power supply.

[0066] In an embodiment of the present invention, an engine power management system is provided that 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-operating charging mode, and backup battery connection, and the operation management is performed in a logical sequence. 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 preferentially executed. 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 activated, the charging switch is controlled to close, and the external power supply enters the charger through the power controller, connects to the engine starting power supply, and begins charging. During the charging process, the connection of the external power supply is continuously monitored. Once the external power supply is detected to be 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 the external power supply charging mode is terminated. If the power controller detects that the external power supply is disconnected and the starting power supply voltage is below the set "charging start voltage," it activates "self-run charging mode." First, the moving end of the electronically controlled clutch moves backward, disconnecting the load end from the engine output shaft. The engine then starts and enters no-load operation. A small generator within the engine system operates, converting the chemical energy of the fuel into electrical energy, which is processed by a voltage regulator and stored in the starting power supply. The small generator charges the starting power supply, enabling self-run charging. If the power controller detects that the external power supply is disconnected and the starting power supply voltage is below the set "charging start voltage," and if the engine self-run charging mode fails to operate properly, it enters external backup battery mode. If starting the engine in self-run charging mode fails, the battery switch is closed, connecting the backup battery in parallel with the starting power supply and simultaneously powering the engine starting system. The engine restarts and self-run charging is enabled. If starting the engine in external backup battery mode fails three consecutive times, an alarm signal is output, prompting system inspection and maintenance.

[0067] The utility model is suitable for controlling the power supply amount when the engine equipment is stationary for a long time or running intermittently. The power management device developed 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 start. The engine has a combination of multiple charging modes such as external charging, self-running charging, and parallel connection of backup batteries to ensure the stability of engine charging. It can quickly connect an external battery power supply to expand the battery capacity and achieve a fast emergency start effect. The power management system can be disengaged from the load end through the clutch and run the engine system alone to convert 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, reducing daily inspection work.

[0068] The above is only a preferred specific implementation method of the present invention, but the protection scope of the present invention is not limited to this. Any changes or replacements that can be easily thought of by any technician familiar with this technical field within the technical scope disclosed in the present invention should be covered by 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 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, 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 being electrically connected to the engine starting power supply and configured to charge the engine starting power supply; A 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.

2. The engine power management system according to claim 1, characterized in that: It also includes a voltage checking module for detecting 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 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, it controls the charging switch to be closed.

4. The engine power management system according to claim 3, characterized in that: The self-generating system further includes a voltage regulator 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.

5. The engine power management system according to claim 4, characterized in that: The backup battery system further includes a battery switch 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 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 including a clutch, the engine is connected to the static end of the clutch via a first transmission shaft, and the dynamic end of the clutch is connected to the load via 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 supply 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 power supply controller controls the charging switch to be turned off.

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-charge voltage threshold, the power supply controller controls the generator 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 power controller controls the battery switch to be disconnected.

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