Uninterrupted direct-current power supply control system

Abstract

The utility model provides an uninterrupted direct-current power supply control system, and belongs to the technical field of power supply. The uninterrupted direct-current power supply control system comprises an energy storage module, a first voltage detection module, a first switch module, a second switch module, an inverter, a timer and a control module, the first end of the first switch module is used for connecting a power grid, the second end of the first switch module is connected with the energy storage module, the third end of the first switch module is connected with the input end of the inverter, the output end of the inverter is used for connecting a load, and the control end of the first switch module and the control end of the inverter are both connected with the control module; the first end of the second switch module is connected with the energy storage module, the second end of the second switch module is connected with a discharge load, and the control end of the second switch module is connected with the control module; the first voltage detection module and the timing module are connected with the control module. The problem of aging acceleration caused by the fact that the battery is in a high-electric-quantity state for a long time can be effectively avoided, and the service life of the battery is remarkably prolonged.

Description

Technical Field

[0001] The present disclosure relates to the technical field of power supply, and in particular to an uninterruptible direct current power supply control system. Background Art

[0002] With the rapid development of information technology, communication technology, industrial automation and other fields, the requirements for the stability and reliability of power supply are increasing. As an important facility to ensure the continuous operation of key equipment, the uninterruptible power supply (UPS) system can provide stable power output when power is interrupted or fluctuating, and has become an indispensable infrastructure for all walks of life. Traditional uninterruptible power supply systems, especially those that use batteries as energy storage elements, will face the problem of rapid battery aging. Utility Model Content

[0003] The disclosed embodiment provides an uninterruptible direct current power supply control system to solve the problem of rapid aging of batteries in energy storage elements.

[0004] The embodiment of the present disclosure provides an uninterruptible direct current power supply control system, comprising:

[0005] Energy storage module, first voltage detection module, first switch module, second switch module, inverter, timing module and control module;

[0006] The first end of the first switch module is used to connect to the power grid, the second end of the first switch module is connected to the energy storage module, the third end of the first switch module is connected to the input end of the inverter, the output end of the inverter is used to connect to the load, and the control end of the first switch module and the control end of the inverter are both connected to the control module;

[0007] A first end of the second switch module is connected to the energy storage module, a second end of the second switch module is used to connect to a discharge load, and a control end of the second switch module is connected to the control module;

[0008] The first voltage detection module is connected to the control module, and is used to detect the voltage of the energy storage module; the timing module is connected to the control module.

[0009] In an exemplary embodiment of the present disclosure, an uninterruptible direct current power supply control system further includes:

[0010] Charging module, third switch module, second voltage detection module;

[0011] The first end of the third switch module is used to connect to the power grid, the second end of the third switch module is connected to the first end of the charging module, and the second end of the charging module is connected to the energy storage module;

[0012] The second voltage detection module is connected to the control module, and the second voltage detection module is used to detect the output voltage of the power grid.

[0013] In an exemplary embodiment of the present disclosure, an uninterruptible direct current power supply control system further includes:

[0014] Over discharge detection module;

[0015] The over-discharge detection module is connected to the control module, and the over-discharge detection module is used to detect the discharge degree of the energy storage module.

[0016] In an exemplary embodiment of the present disclosure, an uninterruptible direct current power supply control system further includes:

[0017] Temperature detection module;

[0018] The temperature detection module is connected to the control module, and is used to detect the temperature inside the energy storage module.

[0019] In an exemplary embodiment of the present disclosure, an uninterruptible direct current power supply control system further includes:

[0020] a first indicator light and a second indicator light;

[0021] The first indicator light is arranged between the energy storage module and the power grid, and the second indicator light is arranged between the energy storage module and the discharge load;

[0022] The first indicator light and the second indicator light are used to indicate the charging and discharging status of the energy storage module.

[0023] In an exemplary embodiment of the present disclosure, an uninterruptible direct current power supply control system further includes:

[0024] Communication module;

[0025] The communication module is connected to the control module.

[0026] In an exemplary embodiment of the present disclosure, an uninterruptible direct current power supply control system further includes:

[0027] Overload detection module;

[0028] A first end of the overload detection module is connected to an output end of the inverter, and a second end of the overload detection module is used to connect to a power grid.

[0029] The beneficial effects of an uninterruptible direct current power supply control system provided by the embodiment of the present disclosure are:

[0030] The present invention effectively avoids the problem of accelerated aging caused by the battery being in a high power state for a long time by periodically discharging the power of the energy storage module, and significantly prolongs the battery life. At the same time, combined with voltage detection and timing control, it can achieve accurate scheduling of the charge and discharge cycle of the energy storage module, optimize energy utilization efficiency, ensure continuous and stable power supply to the load, and improve the overall reliability of the system. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] In order to more clearly illustrate the technical solutions in the embodiments of the present disclosure, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present disclosure. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0032] Figure 1 It is a structural schematic diagram of an uninterruptible direct current power supply control system provided by an embodiment of the present disclosure;

[0033] Figure 2 is a structural schematic diagram of an uninterruptible direct current power supply control system provided by another embodiment of the present disclosure;

[0034] Figure 3 It is a structural schematic diagram of an uninterruptible direct current power supply control system provided by yet another embodiment of the present disclosure. DETAILED DESCRIPTION

[0035] In order to enable people in the technical field to better understand the present solution, the technical solution in the embodiment of the present solution will be clearly described below in conjunction with the drawings in the embodiment of the present solution. Obviously, the described embodiment is an embodiment of a part of the present solution, not all of the embodiments. Based on the embodiments in the present solution, all other embodiments obtained by ordinary technicians in the field without creative work should fall within the scope of protection of the present solution.

[0036] The term "including" and any other variations in the specification and claims of this solution and the above drawings mean "including but not limited to", and is intended to cover non-exclusive inclusions and is not limited to the examples listed in the text. In addition, the terms "first" and "second" are used to distinguish different objects, not to describe a specific order.

[0037] The following is a detailed description of the implementation of the present disclosure in conjunction with the specific drawings:

[0038] Figure 1 This is a schematic diagram of the structure of an uninterruptible DC power supply control system provided by an embodiment of the present disclosure. Figure 1 , the uninterruptible direct current power supply control system comprises:

[0039] Energy storage module 10, first voltage detection module 11, first switch module 12, second switch module 13, inverter 14, timing module 15 and control module 16;

[0040] The first end of the first switch module 12 is used to connect to the power grid 19, the second end of the first switch module 12 is connected to the energy storage module 10, the third end of the first switch module 12 is connected to the input end of the inverter 14, the output end of the inverter 14 is used to connect to the load 17, and the control end of the first switch module 12 and the control end of the inverter 14 are both connected to the control module 16;

[0041] A first end of the second switch module 13 is connected to the energy storage module 10 , a second end of the second switch module 13 is used to connect to the discharge load 18 , and a control end of the second switch module 13 is connected to the control module 16 ;

[0042] The first voltage detection module 11 is connected to the control module 16 , and is used to detect the voltage of the energy storage module 10 ; the timing module 15 is connected to the control module 16 .

[0043] In this embodiment, the energy storage module 10 can store electrical energy, which is usually achieved by a battery pack, a supercapacitor or other energy storage device. When the power grid 19 is normally powered, the energy storage module 10 is charged; when the power grid 19 is abnormal, the energy storage module 10 releases the stored electrical energy to maintain system operation.

[0044] The first voltage detection module 11 is used to detect the voltage level of the energy storage module 10 to ensure that it is within a safe and effective operating range. The first voltage detection module 11 sends the voltage detection result to the control module 16, and the control module 16 analyzes the voltage detection result to determine whether the energy storage module 10 has not been discharged for a long time or is in an over-discharge state.

[0045] The first end of the first switch module 12 is connected to the power grid 19, and the second end is connected to the energy storage module 10. When the power grid 19 is normal, the first switch module 12 supplies power from the power grid 19 to the load 17 through the inverter 14. When the power grid 19 fails, it switches to the energy storage module 10, and the energy storage module 10 supplies power to the load 17 to prevent the abnormality of the power grid 19 from affecting the normal operation of the load 17.

[0046] The inverter 14 can convert the AC power of the power grid 19 into DC power to supply power to the load 17 requiring DC power; it can also convert the DC power of the energy storage module 10 into AC power to supply power to the load 17 requiring DC power. The output end of the inverter 14 is connected to the load 17, and its input end receives power from the power grid 19 or the energy storage module 10 through the first switch module 12. The control end of the inverter 14 is also connected to the control module 16 to achieve precise control of the inversion process.

[0047] The timing module 15 can perform special tasks within a specific time interval, such as feeding back to the control module 16 that it is time for the energy storage module 10 to discharge.

[0048] The control module 16 can receive the voltage information of the energy storage module 10 sent by the first voltage detection module 11, detect the energy storage state, ensure that it operates within a safe range, and avoid over-discharge or non-discharge. At the same time, the control module 16 can intelligently control the working mode of the first switch module 12 and the inverter 14 according to the state of the power grid 19 and the charging and discharging requirements of the energy storage module 10, realize seamless switching between power supply of the power grid 19 and power supply of energy storage, and ensure continuous power supply of the load 17. In addition, the control module 16 also cooperates with the timing module 15 to regularly schedule the charging and discharging cycle of the energy storage module 10 according to the preset time strategy to optimize energy utilization efficiency.

[0049] Exemplarily, the workflow of this embodiment is as follows:

[0050] When the power grid 19 is supplying power normally, the first switch module 12 connects the power grid 19 and the inverter 14, and the inverter 14 converts the AC power of the power grid 19 into DC power to supply the load 17; when an abnormality occurs in the power grid 19, the control module 16 immediately switches the first switch module 12 to the energy storage module 10, and the energy storage module 10 continues to supply power to the load 17 through the inverter 14. The first voltage detection module 11 continuously detects the voltage of the energy storage module 10 to ensure its safe operation. During the period when the power grid 19 or the energy storage module 10 supplies power to the load 17, the control module 16 can flexibly adjust the discharge cycle of the energy storage module 10 through the coordinated work of the timing module 15 and the first voltage detection module 11, optimize energy utilization, and extend the service life of the energy storage module 10.

[0051] For example, the timing cycle of the timing module 15 is 10 days. If the first voltage detection module 11 detects that the energy storage module 10 has a discharge process within 10 days, then within one cycle, the control module 16 does not need to control the second switch module 13 to close. If the first voltage detection module 11 detects that the energy storage module 10 has no voltage output to supply the load 17 within 10 days, the control module 16 can control the second switch module 13 to close, so that the voltage in the energy storage module 10 can be released to the discharge load 18. In this way, periodically discharging the energy storage module 10 can prevent the battery from being in a high power state for a long time. Because the battery is in a fully charged state for a long time, it will accelerate the aging process of the battery. Therefore, periodically discharging the energy storage module 10 can keep the battery in a healthy state.

[0052] It can be concluded from the above that this embodiment effectively avoids the problem of accelerated aging caused by the battery being in a high power state for a long time by periodically discharging the power of the energy storage module 10, and significantly prolongs the service life of the battery. At the same time, combined with voltage detection and timing control, it is possible to achieve accurate scheduling of the charge and discharge cycle of the energy storage module 10, optimize energy utilization efficiency, ensure continuous and stable power supply to the load 17, and improve the overall reliability of the system.

[0053] In one embodiment of the present disclosure, an uninterruptible direct current power supply control system further includes:

[0054] Charging module 21, third switch module 20, second voltage detection module 22;

[0055] A first end of the third switch module 20 is used to connect to the power grid 19, a second end of the third switch module 20 is connected to a first end of the charging module 21, and a second end of the charging module 21 is connected to the energy storage module 10;

[0056] The second voltage detection module 22 is connected to the control module 16 , and is used to detect the output voltage of the power grid 19 .

[0057] In this embodiment, when the power grid 19 has sufficient power, it can supply power to the energy storage module 10 through the charging module 21. The first end of the third switch module 20 is used to connect to the power grid 19, and the second end of the third switch module 20 is connected to the first end of the charging module 21. The third switch module 20 can control whether the power grid 19 supplies power to the energy storage module 10.

[0058] In this embodiment, the first voltage detection module 11 can detect the output voltage of the energy storage module 10. When the control module 16 determines that the output voltage of the energy storage module 10 detected by the first voltage detection module 11 is very small, the control module 16 can control the third switch module 20 to close, so that the power grid 19 can charge the energy storage module 10 through the charging module 21. When the control module 16 determines that the voltage of the energy storage module 10 is saturated according to the voltage detected by the first voltage detection module 11, the third switch module 20 can be controlled to disconnect to prevent the energy storage module 10 from being oversaturated and affecting the service life of the battery. The second voltage detection module 22 can detect the output voltage of the power grid 19. When the output voltage of the power grid 19 is less than the preset voltage value, the control module 16 can control the first switch module 12 to switch to the power supply mode of the energy storage module 10 to ensure uninterrupted power supply to the load 17.

[0059] It can be concluded from the above that the embodiment of the present disclosure realizes dual monitoring of the voltage of the power grid 19 and the state of the energy storage module 10 by adding the charging module 21, the third switch module 20 and the second voltage detection module 22, ensuring that the system can automatically switch between the power grid 19 and the energy storage module 10 when the voltage of the power grid 19 fluctuates or the energy storage is insufficient, thereby ensuring the continuity and stability of the power supply to the load 17. At the same time, the linkage between the third switch module 20 and the first voltage detection module 11 can prevent the energy storage module 10 from being overcharged, thereby extending the service life of the battery.

[0060] In one embodiment of the present disclosure, an uninterruptible direct current power supply control system further includes:

[0061] Over discharge detection module 23;

[0062] The over-discharge detection module 23 is connected to the control module 16 , and is used to detect the discharge degree of the energy storage module 10 .

[0063] In this embodiment, the over-discharge detection module 23 can monitor the discharge process of the energy storage module 10 in real time, detect its parameters such as voltage, current or capacity, and determine whether the energy storage module 10 is close to or reaches its minimum safe discharge level. When it is detected that the discharge level of the energy storage module 10 is close to or reaches the preset over-discharge threshold, the over-discharge detection module 23 will immediately send an alarm signal to the control module 16. After receiving the signal, the control module 16 can take measures, such as cutting off the discharge path, starting the charging process, or switching to the power grid 19 for power supply, to prevent the energy storage module 10 from further discharging and causing damage.

[0064] The over-discharge detection module 23 can also record the historical discharge data of the energy storage module 10, including the number of discharges, the depth of each discharge, etc. These data help the control module 16 analyze the health status of the energy storage module 10, predict maintenance needs, and optimize the system's charging and discharging strategy.

[0065] It can be concluded from the above that the over-discharge detection module 23 in this embodiment effectively improves the safety and stability of the uninterruptible DC power supply system. By real-time monitoring of the discharge state of the energy storage module 10, timely warning and taking measures to prevent over-discharge, the life of the energy storage module 10 is extended.

[0066] In one embodiment of the present disclosure, an uninterruptible direct current power supply control system further includes:

[0067] Temperature detection module 24;

[0068] The temperature detection module 24 is connected to the control module 16 , and is used to detect the temperature inside the energy storage module 10 .

[0069] In this embodiment, the main function of the temperature detection module 24 in the uninterruptible DC power supply control system is to detect the temperature inside the energy storage module 10 to ensure that the energy storage module 10 operates within a safe temperature range. When the temperature detection module 24 detects that the temperature exceeds a preset safety threshold, the temperature detection module 24 sends an alarm signal to the control module 16 to trigger corresponding safety measures, such as stopping the charging and discharging process, to prevent battery performance degradation or safety risks caused by overheating.

[0070] The control module 16 can determine whether the temperature change inside the energy storage module 10 is caused by the charging and discharging process or the energy storage module 10 itself is caused by a problem with the equipment based on the voltage data of the energy storage module 10 collected by the first voltage detection module 11 and the temperature data collected by the temperature detection module 24. If the temperature change inside the energy storage module 10 is caused by the charging and discharging process, the charging and discharging time can be increased to slow down the temperature change inside the energy storage module 10 and increase the life of the energy storage module 10. If it is caused by the equipment itself, the control module 16 can start an early warning and notify relevant technical personnel to solve the problem.

[0071] It can be concluded from the above that the temperature detection module 24 effectively ensures the safe operation of the energy storage module 10, and the control module 16 detects and warns of over-temperature conditions in real time by analyzing the data collected by the temperature detection module 24 to avoid overheating damage. The control module 16 can also combine the temperature data collected by the temperature detection module 24 with the voltage data of the energy storage module 10 collected by the first voltage detection module 11 to accurately determine the cause of temperature changes, optimize the charging and discharging strategy, extend the life of the energy storage, ensure the stable operation of the system, and improve the reliability and safety of the overall system.

[0072] In one embodiment of the present disclosure, an uninterruptible direct current power supply control system further includes:

[0073] A first indicator light 25 and a second indicator light 26;

[0074] The first indicator light 25 is disposed between the energy storage module 10 and the power grid 19 , and the second indicator light 26 is disposed between the energy storage module 10 and the discharge load 18 ;

[0075] The first indicator light 25 and the second indicator light 26 are used to indicate the charging and discharging status of the energy storage module 10 .

[0076] In this embodiment, the first indicator light 25 is arranged between the energy storage module 10 and the power grid 19 to indicate the charging state of the energy storage module 10; the second indicator light 26 is arranged between the energy storage module 10 and the discharge load 18 to indicate the discharge state of the energy storage module 10.

[0077] For example, when the energy storage module 10 is in a charging state, the first indicator light 25 lights up red, and when it is fully charged, the first indicator light 25 lights up green; when the energy storage module 10 is in a discharging state, the second indicator light 26 lights up green, and when the discharge voltage of the energy storage module 10 is lower than a preset threshold, the second indicator light 26 lights up yellow.

[0078] It can be concluded from the above that the first indicator light 25 and the second indicator light 26 can intuitively indicate the charging and discharging status of the energy storage module 10, which is convenient for users or maintenance personnel to quickly identify the working status of the system, improve operational convenience and troubleshooting efficiency, and ensure stable operation and efficient management of the uninterruptible DC power supply control system.

[0079] In one embodiment of the present disclosure, an uninterruptible direct current power supply control system further includes:

[0080] Communication module 27;

[0081] The communication module 27 is connected to the control module 16 .

[0082] In this embodiment, the communication module 27 can transmit this information to the remote monitoring center, other power management systems or intelligent devices in a specific communication protocol and format by receiving instructions or data issued by the control module 16, so as to realize remote monitoring, data sharing and centralized management of the system status. At the same time, the communication module 27 also has the ability to receive external input signals, such as control commands or remote dispatch instructions from the host computer, and accurately transmit these signals to the control module 16, so as to ensure that the system can flexibly respond to external demands and realize intelligent and automated operation control. Through this function, the communication module 27 not only enhances the remote interaction capability of the system, but also improves the overall operation efficiency and reliability of the system.

[0083] In one embodiment of the present disclosure, an uninterruptible direct current power supply control system further includes:

[0084] Overload detection module 28;

[0085] A first end of the overload detection module 28 is connected to an output end of the inverter 14 , and a second end of the overload detection module 28 is used to connect to the power grid 19 .

[0086] In this embodiment, the first end of the overload detection module 28 is directly connected to the output end of the inverter 14, and can detect the current output from the inverter 14 to the power grid 19 in real time and accurately. The overload detection module 28 is internally integrated with intelligent judgment logic, which can judge whether the current exceeds the normal range according to the preset overload current threshold (usually set according to the rated output current and safety margin of the inverter 14). Once it is detected that the current value exceeds the threshold, it is considered that an overload condition has occurred. When an overload condition is detected, the overload detection module 28 will immediately send an overload signal to the control module 16, and the control module 16 can activate the alarm device to alarm.

[0087] It can be concluded from the above that the overload detection module 28 ensures the stable operation and safety of the system by real-time detection and judgment of whether the output current of the inverter 14 is overloaded, and taking corresponding protection measures.

[0088] The above embodiments are only used to illustrate the technical solutions of the present disclosure, rather than to limit them. Although the present disclosure has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present disclosure.

Claims

1. An uninterruptible DC power supply control system, characterized in that: include: Energy storage module, first voltage detection module, first switch module, second switch module, inverter, timing module and control module; The first end of the first switch module is used to connect to the power grid, the second end of the first switch module is connected to the energy storage module, the third end of the first switch module is connected to the input end of the inverter, the output end of the inverter is used to connect to the load, and the control end of the first switch module and the control end of the inverter are both connected to the control module; A first end of the second switch module is connected to the energy storage module, a second end of the second switch module is used to connect to a discharge load, and a control end of the second switch module is connected to the control module; The first voltage detection module is connected to the control module, and is used to detect the voltage of the energy storage module; the timing module is connected to the control module.

2. An uninterruptible DC power supply control system as claimed in claim 1, characterized in that: It also includes a charging module, a third switch module, and a second voltage detection module; The first end of the third switch module is used to connect to the power grid, the second end of the third switch module is connected to the first end of the charging module, and the second end of the charging module is connected to the energy storage module; The second voltage detection module is connected to the control module, and the second voltage detection module is used to detect the output voltage of the power grid.

3. An uninterruptible DC power supply control system as claimed in claim 1, characterized in that: It also includes an over-discharge detection module; The over-discharge detection module is connected to the control module, and the over-discharge detection module is used to detect the discharge degree of the energy storage module.

4. The uninterruptible direct current power supply control system according to claim 1, characterized in that: Also includes a temperature detection module; The temperature detection module is connected to the control module, and is used to detect the temperature inside the energy storage module.

5. The uninterruptible direct current power supply control system according to claim 1, characterized in that: Also includes a first indicator light and a second indicator light; The first indicator light is arranged between the energy storage module and the power grid, and the second indicator light is arranged between the energy storage module and the discharge load; The first indicator light and the second indicator light are used to indicate the charging and discharging status of the energy storage module.

6. The uninterruptible direct current power supply control system according to claim 1, characterized in that: Also includes a communication module; The communication module is connected to the control module.

7. The uninterruptible direct current power supply control system according to claim 1, characterized in that: Also includes an overload detection module; A first end of the overload detection module is connected to an output end of the inverter, and a second end of the overload detection module is used to connect to a power grid.

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