Power supply system and load equipment

Abstract

The embodiment of the utility model provides a power supply system and load equipment. Comprising a first switch control unit configured to correspondingly disconnect a first line and connect a second line based on availability of the rectification inversion unit; switching on the first line and switching off the second line correspondingly based on the unavailability of the rectification and inversion unit; a second switch control unit configured to correspondingly open or close the third line based on the availability / unavailability of the first switch control unit; correspondingly conducting the third line when both the first line and the second line are unavailable, and correspondingly disconnecting the third line when one of the first line and the second line is available; and the auxiliary power supply unit is configured to not supply power to the load equipment correspondingly based on the availability / unavailability of the external power supply of the at least one power supply input end. A plurality of power input ends are arranged; continuous power supply to load equipment is ensured through the first switch control unit and the second switch control unit; the auxiliary power supply unit provides power support for the load device.

Description

Technical Field

[0001] The present disclosure relates to the technical field of load devices, and particularly to a power supply system and a load device. Background Art

[0002] With the rapid progress of technology, the demand for exploring the microscopic world in the fields of scientific research and industrial applications has been increasing day by day, which has directly promoted the rapid development and wide application of large load device technologies. Load devices, especially those with high resolution models, have become indispensable precision instruments in many fields such as materials science, biomedicine, and nanotechnology, providing powerful tools for scientific researchers to reveal the mysteries of the microscopic world. However, behind all this, there is an efficient and stable energy supply system - the dedicated power supply for load devices.

[0003] The power supply systems in related technologies often have difficulty meeting the requirements of such precision instruments in terms of power conversion, protection, and emergency power supply. As a representative of precision scientific instruments, the normal operation of load devices depends on high-quality power supply. Any power fluctuation or interruption may affect the clarity and resolution of images, and may even damage expensive electronic components. Most of the power supply solutions in related technologies adopt single power input and simple voltage stabilization protection measures, and such solutions have obvious deficiencies in terms of adaptability to power grid fluctuations, power outages, or different power environments (such as laboratories and on-site operations). Especially when considering the power failure switching and seamless connection of backup power supplies, how to achieve disturbance-free power conversion has become an urgent technical problem to be solved. Summary of the Invention

[0004] In view of the above-mentioned disadvantages of the prior art, the purpose of the present disclosure is to provide a power supply system and a load device to solve the problems in related technologies.

[0005] The first aspect of the present disclosure provides a power supply system, which is applied to the power supply of a load device and includes:

[0006] At least one power input terminal, coupled to at least one external power supply;

[0007] A rectifier and inverter unit, connected to the power input terminal;

[0008] A first switch control unit, connected from the power input terminal to the load device through a first line, and from the power input terminal to the load device through the rectifier and inverter unit through a second line, and is configured to disconnect the first line and conduct the second line based on the availability of the rectifier and inverter unit; or conduct the first line and disconnect the second line based on the unavailability of the rectifier and inverter unit;

[0009] A second switch control unit is connected from the power input terminal to the load device via a third line, and is configured to disconnect or conduct the third line based on the availability / unavailability of the first switch control unit; alternatively, conduct the third line when both the first line and the second line are unavailable, and disconnect the third line when one of the first line and the second line is available;

[0010] An output isolation transformer is coupled between the first switch control unit, the second switch control unit and the load device;

[0011] An auxiliary power supply unit is connected to the rectification and inversion unit so that the output DC voltage is inverted into an AC voltage and output to the first switch control unit, and is configured to supply no power / supply power to the load device based on the availability / unavailability of the external power supply of the at least one power input terminal.

[0012] In an embodiment of the first aspect, a third switch control unit is further provided between the power input terminal and the rectification and inversion unit, and is configured to conduct / disconnect a fourth line connecting the corresponding power input terminal to the rectification and inversion unit based on the availability / unavailability of the corresponding power input terminal.

[0013] In an embodiment of the first aspect, the rectification and inversion unit includes:

[0014] A first rectification module is connected to the power input terminal;

[0015] A first inversion module is connected between the first rectification module and the first switch control unit;

[0016] A second rectification module, whose output terminal is connected to the first inversion module and the auxiliary power supply unit;

[0017] The power input terminal supplies power to the auxiliary power supply unit through the second rectification module; the auxiliary power supply can be used to output an AC voltage to the first inversion module through the line between the second rectification module and the second rectification module and the line between the second rectification module and the first inversion module.

[0018] In an embodiment of the first aspect, it further includes: a power monitoring chip, which is arranged between the output isolation transformer and the input terminal of the load device, and includes: a first power supply terminal, a voltage detection terminal and a current detection terminal;

[0019] The first power supply terminal is coupled to the output terminal of the output isolation transformer through a first fuse and a rectifying device;

[0020] The voltage detection terminal is coupled to the output terminal of the output isolation transformer through a second fuse;

[0021] The current detection terminal is coupled to the output terminal of the output isolation transformer through a current transformer.

[0022] In an embodiment of the first aspect, it further includes: an electric energy monitoring chip, disposed between the output isolation transformer and the input terminal of the load device;

[0023] A human-machine interaction module, including a second power supply terminal and a communication input terminal;

[0024] The second power supply terminal is coupled to the output isolation transformer through a power supply system;

[0025] The communication input terminal is respectively coupled to the first communication output terminal of the rectifier-inverter unit, the second communication output terminal of the electric energy monitoring chip, and the third communication output terminal of the auxiliary power supply unit.

[0026] In an embodiment of the first aspect, the power supply system includes:

[0027] A fourth switch control unit, connected to the at least one power input terminal through a first power supply line, and connected to the output terminal of the first switch control unit through a second power supply line, and configured to correspondingly turn on the first power supply line and turn off the second power supply line based on the availability of the at least one external power supply;

[0028] Or, correspondingly turn off the first power supply line and turn on the second power supply line based on the unavailability of the at least one external power supply.

[0029] In an embodiment of the first aspect, it further includes an input isolation transformer, coupled between the power input terminal and the rectifier-inverter unit.

[0030] In an embodiment of the first aspect, a first heat dissipation circuit is further disposed between the input isolation transformer and the rectifier-inverter unit;

[0031] The first heat dissipation circuit includes:

[0032] A first heat dissipation control chip, including a third power supply terminal, a first switch control terminal, and a first chip output terminal;

[0033] The third power supply terminal is coupled to the output terminal of the input isolation transformer through a third fuse;

[0034] The first chip output terminal is coupled to at least one first heat dissipation fan;

[0035] The first switch control terminal is coupled to a first switch element, and is configured to turn on the corresponding at least one first heat dissipation fan based on the availability / unavailability of the at least one first heat dissipation fan.

[0036] In an embodiment of the first aspect, a second heat dissipation circuit is further provided between the output isolation transformer and the first switch control unit;

[0037] The second heat dissipation circuit includes:

[0038] A second heat dissipation control chip, including a fourth power supply terminal, a second switch control terminal, and a second chip output terminal;

[0039] The fourth power supply terminal is coupled to the output terminal of the first switch control unit through a fourth fuse;

[0040] The second chip output terminal is coupled to at least one second heat dissipation fan;

[0041] The second switch control terminal is coupled to a second switch element, and is configured to turn on the corresponding at least one second heat dissipation fan based on the availability / unavailability of the at least one second heat dissipation fan.

[0042] A second aspect of the present disclosure provides a load device, which is powered by the power supply system described in any one of the above.

[0043] Advantages of the present disclosure: By providing multiple power input terminals, the reliability and diversity of power supply are increased, ensuring that the system can still operate when a single power failure occurs; through the first and second switch control units, seamless switching between the available and unavailable states of the rectifier-inverter unit can be achieved, ensuring continuous power supply to the load device; the auxiliary power supply unit can provide temporary power support to the load device when all external power supplies fail, ensuring continuous operation in an emergency. BRIEF DESCRIPTION OF THE DRAWINGS

[0044] Figure 1 Show the system structure block diagram of the power supply system in an embodiment of the present disclosure.

[0045] Figure 2 Show the system structure block diagram of the power supply system in another embodiment of the present disclosure.

[0046] Figure 3 Show the system structure block diagram of the power supply system in another embodiment of the present disclosure.

[0047] Figure 4 Show the system structure block diagram of the power supply system in another embodiment of the present disclosure.

[0048] Figure 5 Show the system structure block diagram of the power supply system in another embodiment of the present disclosure.

[0049] Figure 6 Show the system structure block diagram of the power supply system in another embodiment of the present disclosure.

[0050] Figure 7 Shows the system structure block diagram of the power supply system in another embodiment of the present disclosure.

[0051] Figure 8 Shows the system structure block diagram of the power supply system in another embodiment of the present disclosure.

[0052] Figure 9 Shows the system structure block diagram of the power supply system in another embodiment of the present disclosure. Detailed implementation manners

[0053] The following uses specific specific examples to illustrate the implementation manners of the present disclosure. Those skilled in the art can easily understand other advantages and effects of the present disclosure from the information disclosed in the present disclosure. The present disclosure can also be implemented or applied in other different specific implementation manners. Various details in the present disclosure can also be modified or changed according to different viewpoints and application modules without departing from the spirit of the present disclosure. It should be noted that, without conflict, the embodiments and features in the embodiments of the present disclosure can be combined with each other.

[0054] The following takes the drawings as a reference and details the embodiments of the present disclosure so that those skilled in the art to which the present disclosure pertains can easily implement it. The present disclosure can be embodied in many different forms and is not limited to the embodiments described herein.

[0055] In the description of the present disclosure, the reference terms "one embodiment", "some embodiments", "example", "specific example", or "some examples", etc. mean that the specific features, structures, materials, or characteristics represented in connection with the embodiment or example are included in at least one embodiment or example of the present disclosure. Moreover, the specific features, structures, materials, or characteristics represented can be combined in a suitable manner in any one or a group of embodiments or examples. In addition, without contradiction, those skilled in the art can combine and combine the different embodiments or examples represented in the present disclosure and the features of the different embodiments or examples.

[0056] In addition, the terms "first" and "second" are only used for the purpose of indication and cannot be understood as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first" and "second" can explicitly or implicitly include at least one of the features. In the description of the present disclosure, the meaning of "a group" is two or more, unless otherwise specifically defined.

[0057] To clearly illustrate the present disclosure, devices irrelevant to the description are omitted, and the same or similar components throughout the specification are given the same reference numerals.

[0058] Throughout the specification, when it is said that a device is "connected" to another device, this includes not only the case of "direct connection", but also the case of "indirect connection" where other elements are placed in between. Additionally, when it is said that a certain device "includes" a certain constituent element, unless there is a particularly contrary record, it does not exclude other constituent elements, but means that other constituent elements may also be included.

[0059] Although in some examples the terms first, second, etc. are used herein to denote various elements, these elements should not be limited by these terms. These terms are only used to distinguish one element from another. For example, the first interface and the second interface, etc. are indicated. Furthermore, as used herein, the singular forms "a", "an", and "the" are also intended to include the plural forms unless the context indicates otherwise. It should be further understood that the terms "comprise", "include" indicate the presence of the stated features, steps, operations, elements, modules, items, kinds, and / or groups, but do not preclude the presence, occurrence, or addition of one or a group of other features, steps, operations, elements, modules, items, kinds, and / or groups. The term "or" and "and / or" used herein are interpreted inclusively, or means any one or any combination. Thus, "A, B or C" or "A, B and / or C" means "any one of the following: A; B; C; A and B; A and C; B and C; A, B and C". An exception to this definition only occurs when the combination of elements, functions, steps, or operations are inherently mutually exclusive in some way.

[0060] The technical terms used herein are only for referring to specific embodiments and are not intended to limit the present disclosure. The singular forms used herein also include the plural forms as long as the statement does not clearly indicate the contrary meaning. The meaning of "include" used in the specification is to embody specific characteristics, regions, integers, steps, operations, elements, and / or components, and does not exclude the existence or addition of other characteristics, regions, integers, steps, operations, elements, and / or components.

[0061] Although not defined differently, including the technical terms and scientific terms used herein, all terms have the same meaning as generally understood by those skilled in the technical field to which the present disclosure pertains. Terms defined in commonly used dictionaries are additionally interpreted to have a meaning consistent with the relevant technical literature and the currently presented information, and should not be over-interpreted as ideal or overly formulaic meanings as long as they are not defined.

[0062] In the related load device power supply technology, the existing deficiencies mainly focus on aspects such as single power source dependence, insufficient conversion efficiency and stability, lack of emergency power supply mechanism, and excessive system integration complexity and volume. These problems seriously affect the application efficiency and reliability of load devices in precision scientific research.

[0063] In Figure 1 the embodiment, by configuring at least one power input terminal 100 and coupling it to an external power supply 101, the reliability and flexibility of power supply are enhanced. The first switch control unit 400 can automatically switch between the direct power supply line (the first line) and the power supply line after rectification and inversion (the second line) according to the working state (available / unavailable) of the rectification and inversion unit 200, ensuring the continuity and stability of power supply.

[0064] The auxiliary power supply unit 700 is connected between the input terminal and the output terminal of the rectification and inversion unit 200. When all external power supplies 101 are unavailable, the auxiliary power supply unit 700 provides necessary power support for the load device 300, effectively preventing important experiments from being interrupted and equipment from being damaged.

[0065] The second switch control unit 500 added between the power input terminal 100 and the first switch control unit 400, together with the existence of the third line, constructs a dual protection mechanism to ensure the continuity of power supply even when the first switch control unit 400 fails.

[0066] In Figure 1 the embodiment, a power supply system is provided, which is applied to the load device 300 and includes:

[0067] At least one power input terminal 100, coupled to at least one external power supply 101;

[0068] The rectification and inversion unit 200, connected to the power input terminal 100;

[0069] The first switch control unit 400 is connected from the power input terminal 100 to the load device 300 via a first line, and from the power input terminal 100 to the load device through the rectification and inversion unit 200 via a second line, and is configured to disconnect the first line and conduct the second line corresponding to the availability of the rectification and inversion unit 200; or, conduct the first line and disconnect the second line corresponding to the unavailability of the rectification and inversion unit 200;

[0070] The second switch control unit 500 is connected from the power input terminal 100 to the load device 300 via a third line, and is configured to disconnect or conduct the third line based on the availability / unavailability of the first switch control unit 400; or, conduct the third line when both the first line and the second line are unavailable, and disconnect the third line when one of the first line and the second line is available; (configured to conduct the third line based on the unavailability of one of the first switch control unit, the first line and the second line; or, disconnect the third line based on the availability of the first switch control unit, the first line and the second line;)

[0071] The output isolation transformer 600 is coupled between the first switch control unit 400 and the second switch control unit 500 and the load device 300;

[0072] The auxiliary power supply unit 700 is connected to the rectification and inversion unit 200 so that the output DC voltage is inverted into an AC voltage and output to the first switch control unit 400, and is configured to supply no power / supply power to the load device 300 based on the availability / unavailability of the external power supply 101 of the at least one power input terminal 100.

[0073] Specifically, in some embodiments, at least one power input terminal 100 is connected to an external power supply 101. For example, in Figure 1 the embodiment, two or more power input terminals 100 are provided and are respectively connected to different external power supplies 101, such as the commercial power and the standby generator. In this way, even if a single power supply fails, the continuous power supply to the load device 300 can be ensured, increasing the reliability and flexibility of the system. In some embodiments, the load device 300 may be an electron microscope; between the power input terminal 100 and the input terminal of the load device 300, a rectification and inversion unit 200 is provided to rectify the input alternating current (AC) into direct current (DC), and then invert it into pure alternating current output according to needs to adapt to the specific power requirements of the load device 300 and ensure the power quality.

[0074] To prevent the rectifier-inverter unit 200 from failing to supply power to the load device 300, a first circuit that couples the load device 300 without passing through the rectifier-inverter unit 200 from the power input terminal 100 is also provided. To control the conduction of the first circuit and the second circuit, a first switch control unit 400 is also provided to control the conduction of the first circuit and the second circuit. The first switch control unit 400 automatically switches the power path according to the working state (usable or unusable) of the rectifier-inverter unit 200. When the rectifier-inverter unit 200 is working properly, it disconnects the first circuit directly from the power input terminal 100 to the load device 300, ensuring that the current is supplied to the load device 300 after being optimized by the rectifier-inverter unit 200, thereby improving the power quality. Conversely, if the rectifier-inverter unit 200 has problems or is not applicable, the first switch control unit 400 will quickly switch to conduct the first circuit, bypassing the rectifier-inverter unit 200, ensuring that the load device 300 will not lose power due to the failure of the power processing unit, and enhancing the reliability of the system.

[0075] Since the first switch control unit 400 may also fail, a second switch control unit 500 is also provided. A third circuit connects from the power input terminal 100 to the load device 300 (such as an electron microscope). When the first switch control unit 400 is unavailable due to a fault, maintenance, or other reasons, the second switch control unit 500 will automatically conduct the third circuit to ensure the uninterrupted power supply to the load device 300. Conversely, when the first switch control unit 400 resumes normal operation, the second switch control unit 500 disconnects the third circuit to restore the normal power supply path. In addition to adjusting according to the state of the first switch control unit 400, the second switch control unit 500 can also switch according to the availability of the first circuit (the circuit directly from the power input terminal 100 to the load device 300) and the second circuit (the circuit passing through the rectifier-inverter unit 200 to the load device 300). When both the first circuit and the second circuit are unavailable, the second switch control unit 500 will automatically conduct the third circuit as an emergency power supply path to ensure the power supply to the load device 300. Conversely, once any one of the first circuit or the second circuit becomes available, the second switch control unit 500 will disconnect the third circuit and preferentially use the main power supply path, thereby optimizing energy utilization and system performance. In some embodiments, when the first switch control unit 400 encounters a serious fault and requires emergency repair, the manual switching function of the second switch control unit 500 allows the operator to switch the power supply line from the main power supply path (the first circuit or the second circuit) to the backup path (the third circuit) or the maintenance mode without stopping the operation of the load device 300, so that even when repairing or replacing critical equipment, the load device 300 can still maintain normal operation, ensuring the continuity of scientific research work and the integrity of experimental data. Optionally, the first switch control unit 400 can also automatically switch according to an external control signal.

[0076] The output terminals of the first switch control unit 400 and the second switch control unit 500 are connected to the input terminal of the load device 300 through an output isolation transformer 600. The output isolation transformer 600 not only provides necessary electrical isolation to reduce electromagnetic interference, but also enhances the safety and stability of the system.

[0077] To ensure that the load can still operate when both input power supplies fail, an auxiliary power supply module is also provided. When the main power input fails or is interrupted, the auxiliary power supply unit 700 can be immediately activated to provide temporary power supply to the load device 300. This ensures that in the event of an emergency, such as power grid fluctuations, main power maintenance, or natural disasters, the load device 300 can continue to operate, avoiding the risk of experiment interruption and data loss, which is crucial for continuous research and critical sample observation. When the external power supply 101 is operating normally, electrical energy can be effectively utilized to charge the auxiliary power supply unit 700 (such as a battery pack) to ensure that it is always fully charged and ready to handle emergencies. This strategy improves the overall energy utilization efficiency and reduces energy waste. When the external power supply 101 is the mains power, the voltage and current characteristics of the mains power (usually alternating current) are not always directly applicable to charging the auxiliary power supply unit 700. The rectifier-inverter unit 200 converts the mains power from alternating current to direct current and charges the auxiliary power supply unit 700 through the secondary output terminal.

[0078] Optionally, in Figure 2 the example, a third switch control unit 800 is further provided between the power input terminal 100 and the rectifier-inverter unit 200, which is configured to conduct / disconnect the fourth line connecting the corresponding power input terminal 100 to the rectifier-inverter unit 200 based on the availability / unavailability of the corresponding power input terminal 100.

[0079] Specifically, in some embodiments, the third switch control unit 800 can independently control the connection (the fourth line) between each power input terminal 100 and the rectification and inversion unit 200 according to the available status of each power input terminal 100. When a certain power input terminal 100 is unavailable (such as a fault occurring or being under maintenance), only this specific line will be disconnected, while other normally operating power input terminals 100 can still supply power to the rectification and inversion unit 200, ensuring the uninterrupted operation of the system. It can effectively isolate the problematic power input and avoid the risk of a single power problem affecting the entire power supply system. When a fault occurs, the third switch control unit 800 responds quickly, cuts off the faulty line, prevents abnormal current or voltage from damaging the rectification and inversion unit 200 and even the entire load device 300 system, and improves the safety and reliability of the system. When performing maintenance or replacement of the power input terminal 100, the third switch control unit 800 allows a certain power supply line to be disconnected separately without interrupting the power supply of the entire system, greatly facilitating the maintenance operation, reducing the downtime caused by maintenance, and improving work efficiency.

[0080] Optionally, in Figure 3 the example, the rectification and inversion unit 200 includes:

[0081] A first rectification module 210, connected to the power input terminal 100;

[0082] A first inversion module 220, connected between the first rectification module 210 and the first switch control unit 400;

[0083] A second rectification module 230, whose output terminal is connected to the first inversion module 220 and the auxiliary power supply unit 700;

[0084] The power input terminal 100 supplies power to the auxiliary power supply unit 700 through the second rectification module 230; the auxiliary power supply 700 can be used to output an AC voltage to the first inversion module 220 through the line between the second rectification module 230 and the line between the second rectification module 230 and the first inversion module 220.

[0085] Specifically, in some embodiments, the first rectification module 210 is used to convert the AC power input from the power input terminal 100 into DC power; the output terminals of the first rectification module 210 and the second rectification module 230 are both connected to the first inversion module 220, and the first inversion module 220 converts the DC power into AC power again to meet the specific requirements of the load device 300 for power quality. This conversion process ensures the purity and stability of the output current, which is beneficial to improving the imaging quality of the load device 300 and the overall operation efficiency of the system.

[0086] The auxiliary power supply unit 700 (usually an energy storage device such as a battery pack or a supercapacitor) can be quickly started when the main power supply fails or needs maintenance, and outputs an AC voltage to the first inverter module 220 through the line between the second rectification module 230 and the line between the second rectification module 230 and the first inverter module 220. When the main power supply is working properly, the auxiliary power supply unit 700 is in a charging state and only supplies power when necessary, avoiding waste of energy and improving the energy efficiency of the overall system. When the power input terminal 100 is normal, the auxiliary power supply unit 700 can also be powered by the second rectification module 230, so that the auxiliary power supply unit 700 (such as a battery pack) can be fully and stably charged when the mains power is available, providing necessary power support for emergency situations or main power supply failures, and enhancing the reliability and continuous operation ability of the system.

[0087] Optionally, in Figure 4 the example, the power supply system further includes: an electric energy monitoring chip 800, which is disposed between the output isolation transformer 600 and the input terminal of the load device 300, and includes: a first power supply terminal VDD1, a voltage detection terminal VD1, and a current detection terminal IC1;

[0088] The first power supply terminal VDD1 is coupled to the output terminal of the output isolation transformer 600 through a first fuse 801 and a rectifying device 802;

[0089] The voltage detection terminal VD1 is coupled to the output terminal of the output isolation transformer 600 through a second fuse 803;

[0090] The current detection terminal IC1 is coupled to the output terminal of the output isolation transformer 600 through a current transformer 804.

[0091] Specifically, in some embodiments, the electric energy monitoring chip 800 detects the output current and voltage of the output isolation transformer 600. The first power supply terminal VDD1 is connected to the output terminal of the output isolation transformer 600 through a first fuse 801 and a rectifying device 802, where the first fuse 801 provides primary overcurrent protection, and the rectifying device 802 ensures that even when there are slight fluctuations at the input end, a stable direct current can be provided for the monitoring chip to ensure its reliable operation.

[0092] The load device 300 has extremely high requirements for the stability of the power supply voltage. Voltage detection can monitor in real time whether the output voltage is within the range allowed by the device, ensuring that the imaging quality is not affected by voltage fluctuations. It is connected to the output terminal of the output isolation transformer 600 through the second fuse 803. The voltage detection terminal VD1 is responsible for monitoring in real time the voltage level supplied to the load device 300, ensuring that the voltage is stable within the range for the safe and efficient operation of the device. The second fuse 803 also serves as a safety protection measure here to prevent damage to the monitoring chip in case of abnormal voltage. It is coupled to the output terminal of the output isolation transformer 600 through the current transformer 804. Among them, the current transformer 804 is a non-contact current measurement device that can safely and accurately monitor the actual current value flowing through the load device 300. By monitoring the current magnitude in real time, overcurrent situations can be detected in a timely manner, preventing damage to the internal components of the load device 300 or system overheating caused by excessive current, and protecting expensive precision instruments from damage.

[0093] Optionally, in Figure 5 the example, it further includes: a human-machine interaction module 900, including a second power supply terminal VDD2 and a communication input terminal RX;

[0094] The second power supply terminal VDD2 is coupled to the output isolation transformer 600 through a power supply system;

[0095] The communication input terminal RX is respectively coupled to the first communication output terminal TX1 of the rectification and inversion unit 200, the second communication output terminal TX2 of the power monitoring chip 800, and the third communication output terminal TX3 of the auxiliary power supply unit 700.

[0096] Specifically, in some embodiments, the human-machine interaction module 900 can receive real-time data from the rectification and inversion unit 200, the power monitoring chip 800, and the auxiliary power supply unit 700, and intuitively display the operating status of the system through a display screen or a graphical user interface (GUI), including information such as voltage, current, power, battery power, system health status, etc., enabling the operator to always grasp the working conditions of the power supply system. For example, when the system detects an abnormal condition (such as voltage overload, current anomaly, low battery power, etc.), the human-machine interaction module 900 will immediately issue a warning, display a fault code or detailed information, help quickly locate the problem, facilitate timely taking of countermeasures, reduce the fault handling time, and protect precision instruments such as the load device 300 from damage. The human-machine interaction module 900 can obtain the working status, efficiency, and fault information of the rectification and inversion unit 200 in real time; combined with the voltage and current detection data of the power monitoring chip 800, the human-machine interaction module 900 can display including voltage stability, current intensity, and power factor, etc.; the interaction module can monitor the charging status, remaining power, and health status of the auxiliary power supply unit 700, which is crucial for planning the maintenance cycle and ensuring the reliability of emergency power supply.

[0097] Optionally, in Figure 6 the example, the power supply system includes:

[0098] A fourth switch control unit 9011, connected to the at least one power input terminal 100 through a first power supply line and to the output terminal of the first switch control unit 400 through a second power supply line, is configured to correspondingly conduct the first power supply line and disconnect the second power supply line based on the availability of the at least one external power source 101;

[0099] Or, correspondingly disconnect the first power supply line and conduct the second power supply line based on the unavailability of the at least one external power source 101.

[0100] Specifically, in some embodiments, the fourth switch control unit 9011 monitors the status of the external power source 101. When it detects the availability of at least one external power source 101, it conducts the first power supply line to ensure that the external power source 101 supplies power to the load device, and at the same time disconnects the second power supply line to stop the power supply of the auxiliary power supply unit 700 to save energy and extend its service life. When the fourth switch control unit 9011 detects that all external power sources 101 are unavailable, it disconnects the first power supply line to prevent the system from attempting to draw power from the invalid power input terminal 100, and at the same time conducts the second power supply line to enable the auxiliary power supply unit 700 to supply power to the load device to ensure the continuity of device operation. In some embodiments, the fourth switch control unit 9011 can be a bidirectional switch, controlled by a relay 9012 provided on the first power supply line. When the external power source 101 is unavailable, the relay does not work. At this time, the fourth switch control unit 9011 conducts the second power supply line, and the auxiliary power supply unit 700 supplies power to the human-computer interaction module 900. When the external power source 101 is normal, the relay is powered on and works normally, attracting the armature in the second switch control unit 9011, so that the first power supply line is conducted, and the external power source 101 directly supplies power to the human-computer interaction module 900.

[0101] Optionally, in Figure 7 the example, it further includes an input isolation transformer 1000, coupled between the power input terminal 100 and the rectification and inversion unit 200.

[0102] Specifically, in some embodiments, the input isolation transformer 1000 can adjust the turns ratio of the primary and secondary coils as needed to achieve voltage boost or buck, so as to match the optimal operating voltage range of the rectifier-inverter unit 200, optimize the power conversion efficiency of the system. The input isolation transformer 1000 can filter out high-frequency noise and electromagnetic interference in the power grid and provide a cleaner power supply to the rectifier-inverter unit 200. Through the buffering effect of the input isolation transformer 1000, the power supply system is less sensitive to fluctuations and interference from the external power grid, enhancing the stability and reliability of power supply. This is particularly important, especially in an environment where the power grid quality is poor or a large number of industrial devices share the same power grid.

[0103] Optionally, in Figure 8 the example, a first heat dissipation circuit 1100 is further provided between the input isolation transformer 1000 and the rectifier-inverter unit 200;

[0104] The first heat dissipation circuit 1100 includes:

[0105] A first heat dissipation control chip, including a third power supply terminal VDD3, a first switch control terminal EN1, and a first chip output terminal OUT1;

[0106] The third power supply terminal VDD3 is coupled to the output terminal of the input isolation transformer 1000 through a third fuse 1101;

[0107] The first chip output terminal OUT1 is coupled to at least one first heat dissipation fan 1102;

[0108] The first switch control terminal EN1 is coupled to a first switch element 1103 and is configured to turn on the corresponding at least one first heat dissipation fan 1102 based on the availability / unavailability of the at least one first heat dissipation fan 1102.

[0109] Specifically, in some embodiments, electronic components generate heat during operation. Especially for high-power devices such as the rectifier-inverter unit 200, if too much heat accumulates, it will lead to a decline in working performance and even damage to the hardware. The heat dissipation circuit transfers and dissipates heat in a timely manner through active or passive means (such as using heat sinks, cooling fans, etc.) to keep the internal temperature of the device within a suitable range. The first cooling fan 1102 is controlled by the first heat dissipation chip. The third power supply terminal VDD3 of the first heat dissipation chip is connected to the output terminal of the input isolation transformer 1000 through the third fuse 1101, ensuring stable power supply for the control chip itself, and at the same time, the fuse provides overcurrent protection. At least one first cooling fan 1102 is coupled to the output terminal of the first heat dissipation control chip. The first cooling fan starts or stops according to the instructions of the control chip to dynamically adjust the heat dissipation efficiency and perform timely heat dissipation according to the working load and temperature change of the rectifier-inverter unit 200. The first switch control terminal EN1 is connected to the first switching element 1103. The first switching element 1103 monitors the temperature or heat dissipation requirements of the intelligent monitoring system and controls the start and stop of the corresponding first cooling fan 1102 within the first heat dissipation control chip. When the system detects a heat dissipation requirement (for example, the temperature of the rectifier-inverter unit 200 rises to a preset threshold), the first switching element 1103 will turn on the corresponding cooling fan, and vice versa to save energy and reduce noise.

[0110] Optionally, in Figure 9 the example, a second heat dissipation circuit 1200 is further provided between the output isolation transformer 600 and the first switch control unit 400;

[0111] The second heat dissipation circuit 1200 includes:

[0112] A second heat dissipation control chip, including a fourth power supply terminal VDD4, a second switch control terminal EN2, and a second chip output terminal OUT2;

[0113] The fourth power supply terminal VDD4 is coupled to the output terminal of the first switch control unit 400 through a fourth fuse 1201;

[0114] The second chip output terminal OUT2 is coupled to at least one second cooling fan 1202;

[0115] The second switch control terminal EN2 is coupled to a second switching element 1203, which is configured to turn on the corresponding at least one second cooling fan 1202 based on the availability / unavailability of the at least one second cooling fan 1202.

[0116] The second heat dissipation circuit 1200 is the same as the first heat dissipation circuit 1100 and will not be elaborated here.

[0117] In some embodiments, in order to display whether the lines in the power supply system are normal, so as to facilitate the judgment and repair of faults, a status display unit is further provided. The display ends of the status display unit are respectively connected to the output ends of the input isolation transformer 1000 to display the availability of the input power supply, the output end of the first sub-switch connecting the input isolation transformer 1000 and the rectification and inversion unit 200 for displaying the status of the first sub-switch, the output end of the second switch control unit 500 for displaying the on / off state of the third line, the output end of the second sub-switch connecting the first switch control unit 400 and the output isolation transformer 600 for displaying the status between the first sub-switch and the second switch, so as to judge the status of the rectification and inversion unit 200 and the first switch control unit 400, the output end of the output isolation transformer for judging the status of the output isolation transformer, and the first heat dissipation circuit 1100 and the second heat dissipation circuit 1200 for judging the status of the cooling fans.

[0118] In the embodiments of the present disclosure, a load device 300 may also be provided, wherein the power supply is obtained through the power supply system of any of the above embodiments.

[0119] The above embodiments are only illustrative of the principles and effects of the present disclosure, and are not used to limit the present disclosure. Any person familiar with this technology can modify or change the above embodiments without departing from the spirit and scope of the present disclosure. Therefore, all equivalent modifications or changes made by those with ordinary knowledge in the technical field without departing from the spirit and technical ideas disclosed by the present disclosure should still be covered by the protection scope of the present disclosure.

Claims

1. A power supply system, characterized in that: Applied to power load equipment; including: At least one power input terminal coupled to at least one external power source; A rectifier and inverter unit connected to the power input terminal; A first switch control unit is connected to the load device from the power input terminal via a first line, and is connected to the load device from the power input terminal through the rectifier inverter unit via a second line, and is configured to disconnect the first line and conduct the second line based on the availability of the rectifier inverter unit; or to conduct the first line and disconnect the second line based on the unavailability of the rectifier inverter unit; A second switch control unit is connected from the power input terminal to the load device via a third line, and is configured to disconnect or connect the third line based on the availability / unavailability of the first switch control unit; or to connect the third line when both the first line and the second line are unavailable, and to disconnect the third line when one of the first line and the second line is available; An output isolation transformer, coupled between the first switch control unit, the second switch control unit and the load device; The auxiliary power supply unit is connected to the rectifier and inverter unit so that the output DC voltage is inverted into AC voltage and then output to the first switch control unit, and is configured to supply / not supply power to the load device based on the availability / unavailability of the external power supply at the at least one power input terminal.

2. The power supply system according to claim 1, characterized in that: A third switch control unit is also provided between the power input terminal and the rectifier-inverter unit, and is configured to connect / disconnect the corresponding power input terminal to the fourth line of the rectifier-inverter unit based on the availability / unavailability of the corresponding power input terminal.

3. The power supply system according to claim 1, characterized in that: The rectifier and inverter unit comprises: A first rectifier module connected to the power input terminal; A first inverter module, connected between the first rectifier module and the first switch control unit; A second rectifier module, an output end of which is connected to the first inverter module and the auxiliary power supply unit; The power input end supplies power to the auxiliary power supply unit through the second rectifier module; the auxiliary power supply can be used to output AC voltage to the first inverter module through the line between the second rectifier module and the line between the second rectifier module and the first inverter module.

4. The power supply system according to claim 1, characterized in that: Also includes: The power monitoring chip is arranged between the output isolation transformer and the input end of the load device, and includes: a first power supply end, a voltage detection end and a current detection end; The first power supply end is coupled to the output end of the output isolation transformer through a first fuse and a rectifier; The voltage detection terminal is coupled to the output terminal of the output isolation transformer through a second fuse; The current detection end is coupled to the output end of the output isolation transformer through a current transformer.

5. The power supply system according to claim 1, characterized in that: Also includes: An electric energy monitoring chip is arranged between the output isolation transformer and the input end of the load device; A human-computer interaction module, comprising a second power supply terminal and a communication input terminal; The second power supply end is coupled to the output isolation transformer through a power supply system; The communication input end is respectively coupled to the first communication output end of the rectifying and inverting unit, the second communication output end of the electric energy monitoring chip and the third communication output end of the auxiliary power supply unit.

6. The power supply system according to claim 5, characterized in that: The power supply system comprises: a fourth switch control unit, connected to the at least one power input terminal through a first power supply line, and connected to the output terminal of the first switch control unit through a second power supply line, and configured to connect the first power supply line and disconnect the second power supply line based on the available correspondence of the at least one external power supply; Alternatively, based on the unavailability of the at least one external power source, the first power supply line is disconnected and the second power supply line is turned on.

7. The power supply system according to claim 1, characterized in that: It also includes an input isolation transformer coupled between the power input terminal and the rectifying and inverting unit.

8. The power supply system according to claim 7, characterized in that: A first heat dissipation circuit is also provided between the input isolation transformer and the rectifier inverter unit; The first heat dissipation circuit comprises: A first heat dissipation control chip, comprising a third power supply terminal, a first switch control terminal and a first chip output terminal; The third power supply end is coupled to the output end of the input isolation transformer through a third fuse; The first chip output end is coupled to at least one first heat dissipation fan; The first switch control terminal is coupled to a first switch element and is configured to turn on the corresponding at least one first heat dissipation fan based on availability / unavailability of the at least one first heat dissipation fan.

9. The power supply system according to claim 1, characterized in that: A second heat dissipation circuit is also provided between the output isolation transformer and the first switch control unit; The second heat dissipation circuit comprises: A second heat dissipation control chip, comprising a fourth power supply terminal, a second switch control terminal and a second chip output terminal; The fourth power supply end is coupled to the output end of the first switch control unit through a fourth fuse; The second chip output terminal is coupled to at least one second heat dissipation fan; The second switch control terminal is coupled to a second switch element and is configured to turn on the corresponding at least one second heat dissipation fan based on availability / unavailability of the at least one second heat dissipation fan.

10. A load device, characterized in that: Power is obtained through the power supply system as described in any one of claims 1 to 9.

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