Gate control circuit

Abstract

The embodiment of the invention provides a gating control circuit, and relates to the technical field of power supply, and the gating control circuit comprises a gating module and a priority determination module. The first end of the gating module is electrically connected with at least two power supplies, the second end of the gating module is electrically connected with load equipment, and the control end of the gating module is electrically connected with the priority determination module; the priority determination module is used for acquiring a priority signal, and the priority signal is used for determining power supply priorities corresponding to the at least two power supplies respectively; and the gating module is used for controlling conduction between the first target power supply and the load equipment and controlling disconnection between the second target power supply and the load equipment based on the priority signal, so that the first target power supply supplies power to the load equipment. Therefore, not only can the power supply be flexibly and configurably selected according to the actual demand of a user, but also the problem of relatively high system power consumption caused by reverse current can be effectively avoided.

Description

TECHNICAL FIELD

[0001] The present disclosure relates to the technical field of power supply, and in particular, to a gating control circuit. BACKGROUND

[0002] In a power supply system with multiple power sources coexisting, it is often necessary to select one power source from multiple power sources to supply power to a load device. The existing solutions mostly use a combination of diodes and integrated circuits (ICs) to realize power source selection. However, such a combination is difficult to flexibly and configurable select a power supply source according to actual user needs, and has deficiencies in blocking reverse current, resulting in high overall power consumption of the system. SUMMARY

[0003] The present disclosure provides a gating control circuit to at least solve the above technical problems in the prior art.

[0004] Specifically, the embodiments of the present disclosure provide a gating control circuit, which comprises a gating module and a priority determination module. A first end of the gating module is electrically connected to at least two power sources, a second end of the gating module is electrically connected to a load device, and a control end of the gating module is electrically connected to the priority determination module. The priority determination module is configured to obtain a priority signal, the priority signal being used to determine the power supply priority of the at least two power sources. The gating module is configured to control the conduction between a first target power source and the load device and control the disconnection between a second target power source and the load device based on the priority signal, so that the first target power source supplies power to the load device. The first target power source is a power source with a power supply priority meeting a preset condition among the at least two power sources, and the second target power source is a power source other than the first target power source among the at least two power sources.

[0005] Based on the gating control circuit provided by the embodiments of the present disclosure, the gating module and the priority determination module can be arranged in the gating control circuit, the first end of the gating module is electrically connected with at least two power supplies respectively, the second end of the gating module is electrically connected with the load device, and the control end of the gating module is connected with the priority determination module. The priority signal can be obtained through the priority determination module, and the priority signal can be used to determine the power supply priority corresponding to the at least two power supplies electrically connected with the gating module, and then the gating module can control the conduction between the power supply in the at least two power supplies and the load device and control the disconnection between the non-power supply in the at least two power supplies and the load device based on the priority signal, thereby realizing the power supply of the load device. In this way, not only can the power supply priority of the power supply be configured to realize the flexible and configurable selection of the power supply according to the actual needs of the user, but also the disconnection between the non-power supply and the load device can be controlled to effectively avoid the problem of high power consumption caused by reverse current.

[0006] It should be understood that the content described in this part is not intended to identify the key or important features of the embodiments of the present disclosure, nor is it used to limit the scope of the present disclosure. Other features of the present disclosure will become apparent from the following description. BRIEF DESCRIPTION OF DRAWINGS

[0007] Figure 1 is a structural schematic diagram of a power supply system provided by an embodiment of the present disclosure; Figure 2 is a structural schematic diagram of a power supply system provided by an embodiment of the present disclosure; Figure 3 is a structural schematic diagram of a power supply system provided by an embodiment of the present disclosure; Figure 4 is a structural schematic diagram of a power supply system provided by an embodiment of the present disclosure; Figure 5 is a structural schematic diagram of a power supply system provided by an embodiment of the present disclosure; Figure 6 is a structural schematic diagram of a power supply system provided by an embodiment of the present disclosure; Figure 7 is a structural schematic diagram of a power supply system provided by an embodiment of the present disclosure; Figure 8 is a structural schematic diagram of a power supply system provided by an embodiment of the present disclosure. DETAILED DESCRIPTION

[0008] To make the objectives, features, and advantages of this disclosure more apparent and understandable, the technical solutions in the embodiments of this disclosure will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this disclosure, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this disclosure without creative effort are within the scope of protection of this disclosure.

[0009] In the following description, references are made to “some embodiments,” which describe a subset of all possible embodiments. However, it is understood that “some embodiments” may be the same subset or different subsets of all possible embodiments and may be combined with each other without conflict.

[0010] If the application documents contain similar descriptions such as "first / second", the following explanation shall be added: In the following description, the terms "first / second / third" are used only to distinguish similar objects and do not represent a specific order of objects. It is understood that "first / second / third" may be interchanged in a specific order or sequence where permitted, so that the embodiments of this application described herein can be implemented in an order other than that illustrated or described herein.

[0011] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein is for the purpose of describing embodiments of this application only and is not intended to limit this application.

[0012] As mentioned in the background section, in power supply systems with multiple power sources, it is often necessary to select one power source from multiple sources to supply power to the load device. A typical application is a power multiplexer, which can be regarded as a set of electronic switches designed to select between two or more power sources and convert them into a single output to power the load device. However, existing solutions mostly use a combination of diodes and integrated circuits (ICs) to achieve power selection, which makes it difficult to flexibly and configurably select the power supply according to the user's actual needs. At the same time, it has shortcomings in blocking reverse current, resulting in high overall system power consumption.

[0013] To address the aforementioned problems, this disclosure provides a gating control circuit. This circuit includes a gating module and a priority determination module. The first terminal of the gating module is electrically connected to at least two power sources, and the second terminal is electrically connected to the load device. The control terminal of the gating module is connected to the priority determination module. The priority determination module can acquire a priority signal, which determines the power supply priority of the at least two power sources electrically connected to the gating module. Based on this priority signal, the gating module can control the connection between the power supply from the at least two power sources and the load device, and control the disconnection between the non-power supply from the at least two power sources and the load device, thereby providing power to the load device. This not only allows for flexible and configurable selection of power sources according to user needs by configuring power supply priorities, but also effectively avoids the problem of high power consumption due to reverse current by controlling the disconnection between the non-power supply and the load device.

[0014] The gating control circuit provided in the embodiments of this disclosure will be described in detail below with reference to the accompanying drawings and specific examples.

[0015] Figure 1 This is one of the schematic diagrams of a gating control circuit provided in the embodiments of this disclosure.

[0016] like Figure 1 As shown, this embodiment of the present disclosure provides a gating control circuit 12, which may include a gating module 121 and a priority determination module 122; The first end of the gating module 121 is electrically connected to at least two power supplies 11, the second end of the gating module 121 is electrically connected to the load device 13, and the control end of the gating module 121 is electrically connected to the priority determination module 122.

[0017] Priority determination module 122 is used to acquire priority signals; The gating module 121 is used to control the connection between the first target power supply and the load device 13 based on the priority signal, and to control the connection between the second target power supply and the load device 13, so that the first target power supply supplies power to the load device 13.

[0018] Here, the priority signal can be used to determine the power supply priority of at least two power supplies 11 respectively. The power supply priority determines the order in which the power supply 11 supplies power to the load device 13. That is, the higher the power supply priority, the earlier the power supply 11 supplies power to the load device 13, and the more priority the power supply 11 gives to the load device 13. This will not be elaborated further here.

[0019] In some embodiments, the first target power source can be a power source among the at least two power sources 11 whose power supply priority meets a preset condition. This preset condition can be a condition determined according to actual circumstances, used to filter power sources to supply power to the load device 13. For example, the preset condition can be set to the power source with the highest power supply priority among the at least two power sources 11; no specific limitation is made here. That is, the first target power source is a power supply, while the second target power source is a power source among the at least two power sources 11 other than the first target power source; that is, the second target power source is a non-power supply. Further details are omitted here.

[0020] It is conceivable that a priority signal can be obtained through the priority determination module 122 set in the gating control circuit 12. This priority signal is used to determine the power supply priority corresponding to at least two power sources 11. Since the control terminal of the gating module 121 set in the gating control circuit 12 is electrically connected to the priority determination module 122, and the first terminal of the gating module 121 is electrically connected to at least two power sources respectively, and the second terminal of the gating module 121 is electrically connected to the load device 13, the gating module 121 in the gating control circuit 12 can filter out the power supply (i.e., the first target power source) for powering the load device 13 from the at least two power sources 11 based on the priority signal, and control the connection between the power supply and the load device 13 based on the priority signal, and control the disconnection between the non-power supply (i.e., the second target power source) and the load device 13, so as to realize the power supply to the load device 13.

[0021] Based on the gating control circuit provided in this embodiment, a gating module and a priority determination module can be configured in the gating control circuit. The first terminal of the gating module is electrically connected to at least two power sources, the second terminal of the gating module is electrically connected to the load device, and the control terminal of the gating module is connected to the priority determination module. The priority determination module can obtain a priority signal, which can be used to determine the power supply priority of the at least two power sources electrically connected to the gating module. Based on this priority signal, the gating module can control the connection between the power supply of the at least two power sources and the load device, and control the disconnection between the non-power supply of the at least two power sources and the load device, thereby achieving power supply to the load device. In this way, not only can the power supply priority be configured to flexibly and configurably select the power supply according to the user's actual needs, but the disconnection between the non-power supply and the load device can also effectively avoid the problem of high power consumption due to reverse current.

[0022] As can be seen from the foregoing embodiments, the gating control circuit provided in this disclosure can configure the power supply priority of at least two power sources by setting a priority determination module, thereby enabling flexible configuration of the power supply according to the user's actual needs. Therefore, in order to describe in detail the priority determination module provided in this disclosure, in a specific embodiment of this disclosure, as follows... Figure 2 As shown, when there are at least two power sources including a first power source 21 and a second power source 22, the priority determination module 122 may include: a first acquisition unit 23, a second acquisition unit 24 and a comparison unit 25. The first end of the first acquisition unit 23 is electrically connected to the first power supply 21, and the second end of the first acquisition unit 23 is electrically connected to the first input end of the comparison unit 25; the first end of the second acquisition unit 24 is electrically connected to the second power supply 22, and the second end of the second acquisition unit 24 is electrically connected to the second input end of the comparison unit 25; the output end of the comparison unit 25 is electrically connected to the control end of the gating module 121. The first acquisition unit 23 is used to acquire the first output voltage of the first power supply 21; The second acquisition unit 24 is used to acquire the second output voltage of the second power supply 22; The comparison unit 25 is used to determine the priority signal based on the comparison information of the first output voltage and the second output voltage.

[0023] Here, the first output voltage of the first power supply 21 can be considered as the supply voltage of the first power supply 21, and similarly, the second output voltage of the second power supply 22 can be considered as the supply voltage of the second power supply 22. It should be noted that the first output voltage can be less than or equal to the supply voltage of the first power supply 21, and the second output voltage can be less than or equal to the supply voltage of the second power supply 22. Alternatively, it can be understood that the first output voltage is determined based on the supply voltage of the first power supply 21, and the second output voltage is determined based on the supply voltage of the second power supply 22; no specific limitations are imposed here.

[0024] In addition, since the at least two power sources in this embodiment include a first power source 21 and a second power source 22, the priority signal can be used to determine the power supply priority of the first power source 21 and the power supply priority of the second power source 22.

[0025] It is conceivable that the supply voltage (i.e., the first output voltage) of the first power supply 21 is obtained by the first acquisition unit 23, which is electrically connected to the first power supply 21, in the priority determination module 122, and the supply voltage (i.e., the second output voltage) of the second power supply 22 is obtained by the second acquisition unit 24, which is electrically connected to the second power supply 22, in the priority determination module 122. Then, the comparison module 25 in the priority determination module 122 can determine the priority signal based on the comparison information of the supply voltage of the first power supply 21 and the supply voltage of the second power supply 22, so as to configure the supply priority of the first power supply 21 and the supply priority of the second power supply 22 through the priority signal.

[0026] More specifically, if the comparison information indicates that the first output voltage is greater than the second output voltage, then the priority signal indicates that the power supply priority of the first power supply 21 is higher than the power supply priority of the second power supply 22. Conversely, if the comparison information indicates that the first output voltage is less than the second output voltage, then the priority signal indicates that the power supply priority of the first power supply 21 is lower than the power supply priority of the second power supply 22.

[0027] In this embodiment, according to actual needs, a priority determination module can be configured with acquisition units corresponding to each power supply to acquire the actual output voltage of each power supply. Then, a comparison unit in the priority determination module is used to compare the actual output voltages acquired by the acquisition units corresponding to different power supplies to obtain a priority signal for determining the power supply priority of each power supply. Thus, the power supply priority of each power supply can be configured according to user needs by adjusting the actual output voltage of each power supply, enabling flexible and configurable selection of power supplies based on their power supply priorities and user requirements.

[0028] In one embodiment of this disclosure, such as Figure 2 As shown, the first acquisition unit 23 may include: a first voltage divider subunit P1 and a first acquisition subunit A1; The first end of the first voltage divider unit P1 is electrically connected to the first power supply 21, the second end of the first voltage divider unit P1 is electrically connected to the first acquisition unit A1, and the second end of the first acquisition unit A2 is electrically connected to the first input end of the comparison unit 25. The first voltage divider subunit P1 is used to divide the power supply voltage of the first power supply 21; the first acquisition subunit A1 is used to acquire the first output voltage of the power supply voltage of the first power supply 21 after voltage division.

[0029] Here, a first voltage divider subunit P1 and a first acquisition subunit A1 can be electrically connected to each other in the first acquisition unit 23. The first end of the first voltage divider subunit P1 is electrically connected to the first power supply 21, and the second end of the first acquisition subunit A1 is electrically connected to the first input end of the comparison unit 25. The voltage of the power supply 21 can be divided by the first voltage divider subunit P1 connected to the first power supply 21. Then, the first output voltage obtained by the voltage divider of the power supply 21 can be obtained by the first acquisition subunit A1 connected to the first voltage divider subunit P1, so that the first acquisition unit 23 can obtain the first output voltage of the first power supply 21.

[0030] Similarly, continue as Figure 2 As shown, the second acquisition unit 24 may include: a second voltage divider subunit P2 and a second acquisition subunit A2; The first end of the second voltage divider unit P2 is electrically connected to the second power supply 22, the second end of the second voltage divider unit P2 is electrically connected to the first end of the second acquisition unit A2, and the second end of the second acquisition unit A2 is electrically connected to the second input end of the comparison unit 25. The second voltage divider subunit P2 is used to divide the power supply voltage of the second power supply 22; the second acquisition subunit A2 is used to acquire the second output voltage of the power supply voltage of the second power supply 22 after voltage division.

[0031] Here, a second voltage divider subunit P2 and a second acquisition subunit A2 can be electrically connected to each other in the second acquisition unit 24. The first end of the second voltage divider subunit P2 is electrically connected to the second power supply 22, and the second end of the second acquisition subunit A2 is electrically connected to the second input end of the comparison unit 25. The power supply voltage of the second power supply 22 can be divided by the second voltage divider subunit P2, and then the second output voltage of the power supply voltage of the second power supply 22 can be obtained by the second acquisition subunit A2, which is interconnected with the second voltage divider subunit A2, so that the second acquisition unit 24 can obtain the second output voltage of the second power supply 22.

[0032] It should be noted that, continuing as Figure 2 As shown, in this embodiment of the present disclosure, the first voltage divider unit P1 can be disposed between the first power supply 21 and the reference voltage terminal GND, so as to obtain the first output voltage by voltage division from the fixed power supply voltage of the first power supply according to actual needs. Similarly, the second voltage divider unit P2 can be disposed between the second power supply 22 and the reference voltage terminal GND, so as to obtain the second output voltage by voltage division from the fixed power supply voltage of the second power supply 22 according to actual needs, without specific limitation here.

[0033] In this embodiment, interconnected voltage divider subunits and acquisition subunits are configured in the acquisition units corresponding to each power supply. The first terminal of the voltage divider subunit is electrically connected to the corresponding power supply, and the second terminal of the acquisition subunit is electrically connected to the input terminal of the comparison unit. This voltage divider subunit enables on-demand voltage division of the power supply voltage for each power supply, and the acquisition subunit acquires the output voltage of each power supply after voltage division. This allows the comparison unit to determine the priority signal by comparing the output voltages of each power supply. Thus, by dividing the power supply voltage of each power supply according to actual needs using voltage divider subunits, the actual output voltage of each power supply can be adjusted, thereby achieving accurate and effective configuration of the power supply priority and flexible power supply configuration.

[0034] Based on this, in order to accurately divide the power supply voltage of each power source, and thus accurately and effectively configure the power supply priority of each power source, in one embodiment of this disclosure, such as Figure 3 As shown, the first voltage divider unit P1 may include: a first voltage divider resistor R1 and a second voltage divider resistor R2; The first end of the first voltage divider resistor R1 is electrically connected to the first power supply 21, the second end of the first voltage divider resistor R1 is electrically connected to the first end of the second voltage divider resistor R2, the second end of the second voltage divider resistor R2 is electrically connected to the reference voltage terminal GND, and the second end of the first voltage divider subunit P1 is located between the first voltage divider resistor R1 and the second voltage divider resistor R2. The first voltage divider resistor R1 and the second voltage divider resistor R2 are used to divide the power supply voltage of the first power supply 21.

[0035] Here, a first voltage divider resistor R1 and a second voltage divider resistor R2 can be set in the first voltage divider subunit P1, and the first voltage divider resistor R1 and the second voltage divider resistor R2 are connected in series between the first power supply 21 and the reference voltage terminal GND. The first voltage divider resistor R1 and the second voltage divider resistor R2 are used to divide the power supply voltage of the first power supply 21 so that the first output voltage after voltage division can be obtained subsequently. It should be noted that, in this embodiment of the present disclosure, the second terminal of the first voltage divider subunit P1 can be regarded as as follows: Figure 2 The first acquisition subunit A1 shown here is not specifically limited.

[0036] Similarly, the second voltage divider unit P2 may include: a third voltage divider resistor R3 and a fourth voltage divider resistor R4; The first end of the third voltage divider resistor R3 is electrically connected to the second power supply 22. The second end of the third voltage divider resistor R3 is electrically connected to the first end of the fourth voltage divider resistor R4. The second end of the fourth voltage divider resistor R4 is electrically connected to the reference voltage terminal GND. The second end of the second voltage divider subunit P2 is located between the third voltage divider resistor R3 and the fourth voltage divider resistor R4. The third voltage divider resistor R3 and the fourth voltage divider resistor R4 are used to divide the power supply voltage of the second power supply 22.

[0037] Here, a third voltage-dividing resistor R3 and a fourth voltage-dividing resistor R4 can be set in the second voltage-dividing subunit P2, and these three resistors are connected in series between the second power supply 22 and the reference voltage terminal GND. Based on this, the power supply voltage of the second power supply 22 can be divided using these three resistors, so that the divided second output voltage can be obtained subsequently. It should be noted that the second terminal of the second voltage-dividing subunit P2 can be considered as follows: Figure 2 The second acquisition subunit A2 shown here is not specifically limited.

[0038] It should also be noted that the voltage dividing resistors, including the first, second, third, and fourth voltage dividing resistors, can be composed of at least one resistor; no specific limitation is made here. Furthermore, the first, second, third, and fourth voltage dividing resistors can be voltage dividing resistors with the same resistance value or voltage dividing resistors with different resistance values; no specific limitation is made here.

[0039] In this embodiment, for each power supply, two voltage divider resistors can be connected in series between the power supply and the reference voltage terminal to achieve accurate voltage division of the power supply voltage according to actual needs, thereby enabling accurate and effective configuration of the power supply priority of each power supply.

[0040] To provide a detailed description of the priority determination module provided in the embodiments of this disclosure, we will continue as follows: Figure 3 As shown, in one embodiment of this disclosure, the comparison unit 25 may include: The first voltage comparator U1 has its non-inverting input terminal electrically connected to the second terminal of the first acquisition unit 23, its inverting input terminal electrically connected to the second terminal of the second acquisition unit 24, and its output terminal electrically connected to the control terminal of the gating module 121. The first metal-oxide-semiconductor field-effect transistor (MOSFET) (Q7) has its gate G electrically connected to the output terminal of the first voltage comparator U1, its drain D electrically connected to the control terminals of the second power supply 22 and the gating module 121, and its source S electrically connected to the reference voltage terminal GND. The first voltage comparator U1 is used to determine the first priority signal based on the comparison information of the first output voltage and the second output voltage. The first MOSFET (Q7) is used to determine the second priority signal based on the first priority signal.

[0041] Here, a first voltage comparator U1 and a first MOSFET (Q7) can be electrically connected to each other in the comparison unit 25. The non-inverting input terminal of the first voltage comparator U1 is electrically connected to the second terminal of the first acquisition unit 23, the inverting input terminal of the first voltage comparator U1 is electrically connected to the second terminal of the second acquisition unit 24, and the output terminal of the first voltage comparator U1 is electrically connected to the control terminal of the gating module 121. The drain D of the first MOSFET (Q7) is electrically connected to the second power supply 22 and the control terminal of the gating module 121, respectively. Based on this, the first voltage comparator U1 can determine a first priority signal based on the comparison information of the first output voltage obtained by the first acquisition unit 23 and the second output voltage obtained by the second acquisition unit 24. The first MOSFET (Q7) can determine a second priority signal based on the first priority signal. Then, the power supply priority of the first power supply 21 and the power supply priority of the second power supply 22 can be determined based on the first priority signal and the second priority signal, so as to realize the configuration of the power supply priority of the first power supply 21 and the power supply priority of the second power supply 22.

[0042] It should be noted that, since the priority signals in this embodiment may include a first priority signal and a second priority signal, these two signals are used together to determine the power supply priority of the first power supply 21 and the power supply priority of the second power supply 22. Thus, when the comparison information indicates that the power supply priority of the first power supply 21 is higher than that of the second power supply 22, the first priority signal indicates that the first power supply 21 is connected to the load device 13, and the second priority signal indicates that the second power supply 22 is disconnected from the load device 13, thereby configuring the power supply priority of the first power supply 21 and the power supply priority of the second power supply 22. When the comparison information indicates that the power supply priority of the first power supply 21 is lower than that of the second power supply 22, the first priority signal indicates that the first power supply 21 is disconnected from the load device 13, and the second priority signal indicates that the second power supply 22 is connected to the load device 13, thereby configuring the power supply priority of the first power supply 21 and the power supply priority of the second power supply 22.

[0043] To accurately and in detail describe the gating control circuit provided in the embodiments of this disclosure, in one example, continuing as follows... Figure 3 As shown, the non-inverting input of the first voltage comparator U1 is connected between the first voltage divider resistor R1 and the second voltage divider resistor R2, and the inverting input of the first voltage comparator U1 is connected between the third voltage divider resistor R3 and the fourth voltage divider resistor R4. Additionally, the drain D of the first MOSFET (Q7) is connected in series with the second power supply 22 through a resistor r1. This resistor r1 and the first MOSFET (Q7) are used to divide the power supply voltage of the second power supply 22 when the first MOSFET (Q7) is turned on; this will not be elaborated further here.

[0044] In this embodiment, by setting a first voltage comparator and a first MOSFET that are electrically connected to each other in the comparison unit, the first voltage comparator can determine a first priority signal based on the comparison information of the first output voltage and the second output voltage, and the first MOSFET can determine a second priority signal based on the first priority signal. In this way, the power supply priority of each power supply can be configured accurately and effectively, which facilitates the subsequent control of the conduction or disconnection of the corresponding lines based on the power supply priority of the first power supply and the power supply priority of the second power supply, and effectively realizes the flexible configuration of the power supply.

[0045] In another specific embodiment of this disclosure, such as Figure 4 As shown, when there are at least two power sources including a first power source 41 and a second power source 42, the priority determination module 122 may include: a third acquisition unit 43, a third power source 44 and a comparison unit 45. The first end of the third acquisition unit 43 is electrically connected to the first power supply 41, and the second end of the third acquisition unit 43 is electrically connected to the first input end of the comparison unit 45; the third power supply 44 is electrically connected to the second input end of the comparison unit 45; the output end of the comparison unit 45 is electrically connected to the control end of the gating module 121. The third acquisition unit 43 is used to acquire the third output voltage of the first power supply 41; The comparison unit 45 is used to determine the priority signal based on the comparison information between the third output voltage and the power supply voltage of the third power supply 44.

[0046] The third output voltage of the first power supply 41 can be regarded as the supply voltage of the first power supply 41. It should be noted that the third output voltage can be determined based on the supply voltage of the first power supply 41, and the third output voltage is less than or equal to the supply voltage of the first power supply 41.

[0047] In addition, since the above-mentioned at least two power sources may include a first power source 41 and a second power source 42 in this embodiment of the disclosure, the priority signal can be used to determine the power supply priority of the first power source 41 and the power supply priority of the second power source 42.

[0048] It is conceivable that a third acquisition unit 43 electrically connected to the first power supply 41 can be set in the priority determination module 122, and the first end of the third acquisition unit 43 can be electrically connected to the first power supply 41, and the second end of the third acquisition unit 43 can be electrically connected to the first input end of the comparison unit 45. The third output voltage of the first power supply 41 can be obtained through the third acquisition unit 43, and by setting a third power supply 44 with a fixed voltage electrically connected to the second input end of the comparison unit 45, the comparison unit 45 can obtain a priority signal for determining the power supply priority of the first power supply 41 and the power supply priority of the second power supply 42 based on the comparison information of the third output voltage obtained by the third acquisition unit 43 and the power supply voltage of the third power supply 44, thereby realizing circuit protection against power supply over-voltage, under-voltage and over-current.

[0049] More specifically, if the comparison information indicates that the third output voltage is greater than the power supply voltage of the third power supply 44, the resulting priority signal is used to indicate that the power supply priority of the first power supply 41 is higher than the power supply priority of the second power supply 42. Conversely, if the comparison information indicates that the third output voltage is less than the power supply voltage of the third power supply 44, the resulting priority signal is used to indicate that the power supply priority of the first power supply 41 is lower than the power supply priority of the second power supply 42.

[0050] In this embodiment, by setting a third acquisition unit electrically connected to the first power supply, as well as a third power supply and a comparison unit in the priority determination module, and setting one end of the comparison unit to be electrically connected to the second end of the third acquisition unit and the other end to be electrically connected to the third power supply, the comparison unit can accurately and effectively configure the power supply priorities of the first power supply and the second power supply based on the comparison information of the third output voltage obtained by the comparison unit through the third acquisition unit and the power supply voltage of the third power supply. The third power supply can also be used to achieve circuit protection against overvoltage, undervoltage and overcurrent. In this way, for applications that do not require high-voltage DC power supply or transient induced voltage, potential harmful voltages can be effectively blocked. In the event that the downstream circuit or fault event consumes too much current, the current can be quickly limited by this structure to avoid potential circuit damage.

[0051] In one embodiment of this disclosure, the following continues... Figure 4 As shown, the third acquisition unit 43 may include: a third voltage divider subunit P3 and a third acquisition subunit A3; The first end of the third voltage divider unit P3 is electrically connected to the first power supply 41, the second end of the third voltage divider unit P3 is electrically connected to the first end of the third acquisition unit A3, and the second end of the third acquisition unit A3 is electrically connected to the first input end of the comparison unit 45. The third voltage divider subunit P3 is used to divide the power supply voltage of the first power supply 41, and the third acquisition subunit A3 is used to acquire the third output voltage of the power supply voltage of the first power supply 41 after voltage division.

[0052] Here, a third voltage divider subunit P3 and a third acquisition subunit A3 can be electrically connected to each other in the third acquisition unit 43. The first end of the third voltage divider subunit P3 is electrically connected to the first power supply 41. The first end of the third voltage divider subunit P3 is electrically connected to the first end of the third acquisition unit A3. The power supply voltage of the first power supply 41 can be divided by the third voltage divider subunit P3, and the third output voltage after the power supply voltage of the first power supply 41 is obtained by the third acquisition subunit A3.

[0053] It should be noted that, continuing as Figure 4 As shown, in this embodiment of the present disclosure, the third voltage divider unit P3 is disposed between the first power supply 41 and the reference voltage terminal GND, so as to obtain the third output voltage from the fixed power supply voltage of the first power supply according to actual needs.

[0054] In this embodiment, a third voltage divider subunit and a third acquisition subunit are electrically connected to each other in the third acquisition unit. The first end of the third voltage divider subunit is electrically connected to the first power supply, the second end of the third voltage divider subunit is electrically connected to the first end of the third acquisition subunit, and the second end of the third acquisition subunit is electrically connected to the comparison unit. The third voltage divider subunit divides the power supply voltage of the first power supply, and the third acquisition subunit obtains the third output voltage after the power supply voltage of the first power supply is divided. In this way, the actual output voltage of the corresponding power supply can be adjusted according to the user's needs. By comparing with a fixed voltage, not only is the power supply priority of each power supply configured, but also the circuit protection against over-voltage, under-voltage, and over-current of the power supply can be realized.

[0055] Based on this, in order to accurately adjust the actual output voltage of the corresponding power supply according to user needs, and to facilitate subsequent comparison with a fixed voltage to achieve power supply priority configuration and circuit protection for each power supply, in one embodiment of this disclosure, such as Figure 5 As shown, the third voltage divider unit P3 may include: a fifth voltage divider resistor R5 and a sixth voltage divider resistor R6; The first end of the fifth voltage divider resistor R5 is electrically connected to the first power supply 41, the second end of the fifth voltage divider resistor R5 is electrically connected to the first end of the sixth voltage divider resistor R6, and the second end of the sixth voltage divider resistor R6 is electrically connected to the reference voltage terminal GND; the second end of the third voltage divider subunit P3 is located between the fifth voltage divider resistor R5 and the sixth voltage divider resistor R6. The fifth voltage divider resistor R5 and the sixth voltage divider resistor R6 are used to divide the power supply voltage of the first power supply 21.

[0056] Here, two series-connected voltage-dividing resistors can be set in the third voltage-dividing subunit P3, that is... Figure 5 The fifth voltage divider resistor R5 and the sixth voltage divider resistor R6 are connected in series between the first power supply 41 and the reference voltage terminal GND to divide the power supply voltage of the first power supply 41. It should be noted that the second terminal of the third voltage divider subunit P3 can be considered as... Figure 4 The third acquisition subunit A3 shown here is not specifically limited.

[0057] It should be noted that the voltage dividing resistors, including the fifth voltage dividing resistor R5 and the sixth voltage dividing resistor R6, can be composed of at least one resistor, and there is no specific limitation here. In addition, the fifth voltage dividing resistor R5 and the sixth voltage dividing resistor R6 can be voltage dividing resistors with the same resistance value, or they can be voltage dividing resistors with different resistance values, and there is no specific limitation here.

[0058] In this embodiment, the power supply voltage of the first power supply can be accurately divided by setting two series-connected voltage divider resistors in the third acquisition resistor according to actual needs. This allows for accurate determination of the power supply priority of the first power supply and the power supply priority of the second power supply by comparing the output voltage after voltage division of the first power supply voltage with a fixed voltage. This enables the configuration of the power supply priority of each power supply according to user needs, thereby achieving flexible configuration of the power supply.

[0059] Based on this, in order to describe in detail the priority determination module provided in the embodiments of this disclosure, in one embodiment of this disclosure, such as Figure 5 As shown, the comparison unit 45 may include: The second voltage comparator U2 has its non-inverting input terminal electrically connected to the second terminal of the third acquisition unit 43, its inverting input terminal electrically connected to the third power supply 44, and its output terminal electrically connected to the control terminal of the gating module 121. The second metal-oxide-semiconductor field-effect transistor MOSFET (Q14) has its gate G electrically connected to the output terminal of the second voltage comparator U2, its drain D electrically connected to the control terminals of the second power supply 42 and the gating module 121, and its source S electrically connected to the reference voltage terminal GND. The second voltage comparator U2 is used to determine the first priority signal based on the comparison information between the third output voltage and the power supply voltage of the third power supply. The second MOSFET (Q14) is used to determine the second priority signal based on the first priority signal.

[0060] Here, a second voltage comparator U2 and a second MOSFET (Q14) can be electrically connected to each other in the comparison unit 45. The non-inverting input terminal of the second voltage comparator U2 is electrically connected to the second terminal of the third acquisition unit 43, the inverting input terminal of the second voltage comparator U2 is electrically connected to the third power supply 44, and the output terminal of the second voltage comparator U2 is electrically connected to the control terminal of the gating module 121. The drain D of the second MOSFET (Q14) is electrically connected to the second power supply 42 and the control terminal of the gating module 121, respectively. Based on this, the second voltage comparator U2 can determine a first priority signal based on the comparison information of the first output voltage obtained by the third acquisition unit 43 and the power supply voltage of the third power supply 44. The first and second MOSFETs (Q14) can determine a second priority signal based on the first priority signal. Then, the power supply priority of the first power supply 41 and the power supply priority of the second power supply 42 can be determined based on the first priority signal and the second priority signal, so as to realize the configuration of the power supply priority of the first power supply 41 and the power supply priority of the second power supply 42.

[0061] It should be noted that, since the priority signals in this embodiment may include a first priority signal and a second priority signal, these two signals are used together to determine the power supply priority of the first power supply 41 and the power supply priority of the second power supply 42. Thus, when the comparison information indicates that the power supply priority of the first power supply 41 is higher than that of the second power supply 42, the first priority signal indicates that the first power supply 41 is connected to the load device 13, and the second priority signal indicates that the second power supply 42 is disconnected from the load device 13, so that the first power supply 41 supplies power to the load device 13. When the comparison information indicates that the power supply priority of the first power supply 41 is lower than that of the second power supply 42, the first priority signal indicates that the first power supply 41 is disconnected from the load device 13, and the second priority signal indicates that the second power supply 42 is connected to the load device 13, so that the second power supply 42 supplies power to the load device 13.

[0062] To accurately and in detail describe the gating control circuit provided in the embodiments of this disclosure, in one example, such as Figure 5 As shown, the non-inverting input of the first voltage comparator U1 is connected between the first voltage divider resistor R1 and the second voltage divider resistor R2. Additionally, the drain D of the second MOSFET (Q14) is connected in series with the second power supply 42 through resistor r6. This resistor r6 and the second MOSFET (Q14) are used to divide the power supply voltage of the second power supply 42 when the second MOSFET (Q14) is turned on; this will not be elaborated further here.

[0063] In this embodiment, by setting a second voltage comparator and a second MOSFET that are electrically connected to each other in the comparison unit, the second voltage comparator can determine a first priority signal based on the comparison information of the third output voltage and the power supply voltage of the third power supply, and the first MOSFET can determine a second priority signal based on the first priority signal. In this way, not only can the power supply priority of the first power supply and the power supply priority of the second power supply be accurately configured, thereby realizing flexible configuration according to the power supply, but also realizing circuit protection against power supply over-voltage, under-voltage and over-current.

[0064] In yet another specific embodiment of this disclosure, such as Figure 6 As shown, when at least two power sources may include a first power source 61 and a second power source 62, the priority determination module 122 may include a user input unit 63, which is electrically connected to the control terminal of the gating module 121. User input unit 63 is used to acquire user input signals and determine priority signals based on user input signals.

[0065] In some embodiments, the user input signal may indicate the power supply priority of the first power supply 61 and the power supply priority of the second power supply 62. Thus, the priority signal in this embodiment of the disclosure can be used to determine the power supply priority of the first power supply 61 and the power supply priority of the second power supply 62.

[0066] Here, when there are at least two power sources, including the first power source 61 and the second power source 62, a user input unit 63 can be set in the priority determination device 122. The user input signal is obtained through the user input unit 63, and the priority signal can be determined based on the user input signal, thereby realizing the configuration of the power supply priority on demand.

[0067] In this embodiment, a user input module can be set in the priority determination module to receive user input signals, and a priority signal for determining the power supply priority of each power supply can be obtained based on the user input signals. In this way, the power supply priority of each power supply can be manually set, thereby realizing flexible configuration of the power supply.

[0068] In order to provide a comprehensive and detailed description of the gating control circuit provided in the embodiments of this disclosure, in one embodiment of this disclosure, the gating module includes at least two switching units and a gating control unit corresponding to each switching unit; The first terminal of each switching unit is electrically connected to the power supply corresponding to the switching unit, the second terminal of the switching unit is electrically connected to the load device, and the control terminal of the switching unit is electrically connected to the first terminal of the gating control unit corresponding to the switching unit; the control terminal of each gating control unit is electrically connected to the priority determination module. The gating control unit is used to control the closing of the corresponding switch unit based on the priority signal, so that the power supply and load device corresponding to the switch unit are connected. or, The gating control unit is used to control the corresponding switching unit to disconnect based on a priority signal, thereby disconnecting the power supply and load device corresponding to the switching unit.

[0069] Here, at least two switching units, each corresponding to at least two power sources, and a corresponding gating control unit can be configured in the gating module. Each switching unit has its first terminal electrically connected to the power source corresponding to it, its second terminal electrically connected to the load device, and its control terminal electrically connected to the first terminal of the corresponding gating control unit. The control terminal of each gating control unit is also electrically connected to the priority determination module. Based on this, since the priority signal can determine the power supply priority of at least two power sources, each gating control unit can determine whether the corresponding power source needs to supply power to the load device based on the priority signal determined by the priority determination module. If the corresponding power source needs to supply power to the load device, the gating control unit can control the corresponding switching unit to close based on the priority signal, thus connecting the power source corresponding to the switching unit to the load device. In this case, the power source corresponding to the switching unit is the first target power source. Conversely, the gating control unit can control the corresponding switching unit to open based on the priority signal, thus disconnecting the power source corresponding to the switching unit from the load device. In this case, the power source corresponding to the switching unit is the second target power source, thereby enabling the first target power source to supply power to the load device.

[0070] by Figure 2 The gating module provided in this disclosure will be described in detail using the gating control circuit shown as an example. Figure 2 As shown, since at least two power supplies include a first power supply 21 and a second power supply 22, the gating module 121 may include the following components: a first switching unit S21, a first gating control unit G21, a second switching unit S22, and a second gating control unit G22. The first terminal of the first switching unit S21 is electrically connected to the first power supply 21, the second terminal of the first switching unit S21 is electrically connected to the load device 13, the control terminal of the first switching unit S21 is electrically connected to the first terminal of the first gating control unit G21, and the control terminal of the first gating control unit G21 is electrically connected to the first output terminal of the comparison unit 25. The first end of the second switching unit S22 is electrically connected to the second power supply 22, the second end of the second switching unit S22 is electrically connected to the load device 13, the control end of the second switching unit S22 is electrically connected to the second gating control unit G22 corresponding to the second switching unit S22, and the control end of the second gating control unit G22 is electrically connected to the second output end of the comparison unit 25. It should be noted that the output of the comparison unit 25 may include the first output of the comparison unit 25 and the second output of the comparison unit 25, which will not be elaborated on here.

[0071] Based on this, if the priority signal indicates that the power supply priority of the first power supply 21 is higher than that of the second power supply 22, then the first gating control unit G21 can control the first switching unit S21 to close based on the priority signal, so that the first power supply 21 (i.e., the first target power supply) is connected to the load device 13. The second gating control unit G22 can control the second switching unit S22 to open based on the priority signal, so that the second power supply 22 (i.e., the second target power supply) is disconnected from the load device 13, thereby enabling the first power supply 21 to supply power to the load device 13. Conversely, if the priority signal indicates that the power supply priority of the first power supply 21 is lower than that of the second power supply 22, then the first gating control unit G21 can control the first switching unit S21 to open based on the priority signal, so that the first power supply 21 (i.e., the first target power supply) is disconnected from the load device 13. The second gating control unit G22 can control the second switching unit S22 to close based on the priority signal, so that the second power supply 22 (i.e. the second target power supply) is connected to the load device 13, thereby enabling the second power supply 22 to supply power to the load device 13.

[0072] It should also be noted that, Figure 4 , Figure 6 The specific details of the gating module 121 shown can be found in the description of the above embodiments, and will not be repeated here.

[0073] In this embodiment, a switching unit electrically connected to each power supply and a gating control unit for controlling the closing or opening of the switching unit can be set in the gating module. Each gating control unit, based on a priority signal, controls the corresponding switching unit to close or open, thereby powering the load device. This effectively avoids the problem of high system power consumption due to reverse current while achieving flexible power supply configuration.

[0074] Based on this, in order to effectively avoid reverse current and thus reduce system power consumption, in one embodiment of this disclosure, the switching unit includes a first target MOSFET and a second target MOSFET; The source of the first target MOSFET is electrically connected to the source of the second target MOSFET, the drain of the first target MOSFET is electrically connected to the power supply, and the drain of the second target MOSFET is electrically connected to the load device; wherein, the first target MOSFET and the second target MOSFET are P-type MOSFETs, and the gating control unit is composed of N-type MOSFETs; When the priority signal is high, both the first target MOSFET and the second target MOSFET turn on in response to the voltage difference between the gate voltage and the source voltage being less than a preset voltage threshold, and the switching unit closes. When the priority signal is low, both the first target MOSFET and the second target MOSFET turn off in response to the voltage difference between the gate voltage and the source voltage being greater than a preset voltage threshold, and the switching unit turns off.

[0075] by Figure 3 The following is a detailed description of the switching unit provided in the embodiments of this disclosure, using the gating control circuit diagram shown as an example. Figure 3 As shown, the first switching unit 36 ​​may include a first target MOSFET (Q1) and a second target MOSFET (Q2). The source S of the first target MOSFET (Q1) is electrically connected to the source S of the second target MOSFET (Q2), the drain D of the first target MOSFET (Q1) is electrically connected to the power supply, and the drain D of the second target MOSFET (Q2) is electrically connected to the load device 13; wherein, the first target MOSFET (Q1) and the second target MOSFET (Q2) are P-type MOSFETs, and the selection control unit G21 is composed of N-type MOSFETs; When the priority signal is a high-level signal, both the first target MOSFET (Q1) and the second target MOSFET (Q2) turn on in response to the voltage difference between the gate voltage and the source voltage being less than a preset voltage threshold, and the first switching unit S21 closes. When the priority signal is low, both the first target MOSFET (Q1) and the second target MOSFET (Q2) turn off in response to the voltage difference between the gate voltage and the source voltage being greater than a preset voltage threshold, and the first switching unit S21 turns off.

[0076] The aforementioned preset voltage threshold can be determined according to the actual situation, and no specific limitation is made here.

[0077] Here, two "back-to-back" MOSFETs, namely a first target MOSFET (Q1) and a second target MOSFET (Q2), can be set in the first switching unit S21. The source S of the first target MOSFET (Q1) is electrically connected to the source S of the second target MOSFET (Q2), the drain D of the first target MOSFET (Q1) is electrically connected to the power supply, and the drain D of the second target MOSFET (Q2) is electrically connected to the load device 13. Since the first target MOSFET (Q1) and the second target MOSFET (Q2) are P-type MOSFETs, and the gating control unit G21 is composed of N-type MOSFETs, when the priority signal is a high-level signal, a sufficiently high voltage will be applied to the gate of the gating control unit G21, and the gating control unit G21 will be turned on. Since the source S of the gating control unit G21 is electrically connected to the reference voltage terminal GND, the gate voltages of the first target MOSFET (Q1) and the second target MOSFET (Q2) will be pulled low. When the gate voltages of the first target MOSFET (Q1) and the second target MOSFET (Q2) are pulled low enough, the first target MOSFET (Q1) and the second target MOSFET (Q2) can be turned on in response to the voltage difference between the gate voltage and the source voltage being less than a preset voltage threshold. Then the first switching unit S21 is closed, and the first power supply provides power to the load device. When the priority signal is a low level signal, a low level will be applied to the gating control unit G21. At this time, the gating control unit G21 will be turned off. Correspondingly, the first target MOSFET (Q1) and the second target MOSFET (Q2) can be turned off in response to the voltage difference between the gate voltage and the source voltage being greater than the preset voltage threshold. Then the first switching unit S21 will be turned off.

[0078] In one example, such as Figure 3 As shown, the gates of both the first target MOSFET (Q1) and the second target MOSFET (Q2) are electrically connected to the drain of the selection control unit G21 via resistor r3. The source S of the first target MOSFET (Q1) is electrically connected to one end of resistor r2, and the source S of the second target MOSFET (Q2) is electrically connected to capacitor c1. The other end of resistor r2 and the other end of capacitor c1 are electrically connected to the drain of the selection control unit G21 via resistor r3. Additionally, capacitor c3 is positioned between the drain D of the second target MOSFET (Q2) and the reference voltage terminal GND. Capacitor c3 is also positioned between the load device 13 and the reference voltage terminal GND. This capacitor c3 is used to maintain the supply voltage to the load device within a preset voltage range during the switching from the first target power supply to the second target power supply. This preset range can be determined according to actual conditions and will not be elaborated further here.

[0079] It should be noted that,Figure 3 The second switching unit, and Figure 5 and Figure 7 For details regarding the switching unit, please refer to the above embodiments; further details will not be provided here.

[0080] In this embodiment, by setting two "back-to-back" MOSFETs in the power supply switching unit, the power supply path of the power supply can be effectively controlled to turn on or off, thereby effectively blocking reverse current and effectively reducing the overall power consumption of the system.

[0081] Based on the gating control circuit provided in the foregoing embodiments, this disclosure also provides a power supply system, such as... Figure 8 The power supply system 80 may include the following components: At least two power supplies 81; As described in the foregoing embodiment, the first terminal of the gating control circuit 82 is electrically connected to at least two power supplies 81, and the second terminal of the gating control circuit 82 is electrically connected to the load device 83. The gating control circuit 82 is used to control the first target power supply to conduct between the load device 83 and the second target power supply to disconnect between the load device and the load device 83 according to the power supply priorities corresponding to at least two pre-configured power supplies 81, so that the first target power supply supplies power to the load device 83.

[0082] In some embodiments, the first target power supply is a power supply among at least two power supplies 81 whose power supply priority meets a preset condition, and the second target power supply is a power supply among at least two power supplies 81 other than the first target power supply. The preset conditions can be pre-set based on practical experience, and will not be elaborated upon here.

[0083] In this embodiment, at least two power sources and a selection control circuit are provided in the power supply system. The first terminal of the selection control circuit is electrically connected to each of the at least two power sources, and the second terminal is electrically connected to the load device. Based on this, the selection control circuit can determine the power supply and non-power supply from the at least two power sources according to the pre-configured power supply priorities, thereby controlling the connection between the power supply and the load device and controlling the disconnection between the non-power supply and the load device. Thus, flexible power supply configuration is achieved by pre-configuring the power supply priorities, and the disconnection between the non-power supply and the load device effectively avoids the problem of high power consumption due to reverse current.

[0084] It should be understood that the various forms of processes shown above can be used to rearrange, add, or delete steps. For example, the steps described in this disclosure can be executed in parallel, sequentially, or in different orders, as long as the desired result of the technical solution disclosed in this disclosure can be achieved, and this is not limited herein.

[0085] In the above description, the term "some embodiments" refers to a subset of all possible embodiments. However, it is understood that "some embodiments" may be the same subset or different subsets of all possible embodiments and may be combined with each other without conflict.

[0086] Unless otherwise defined, all technical and scientific terms used in this disclosure have the same meaning as commonly understood by one of ordinary skill in the art to which this disclosure belongs. The terminology used in this disclosure is for the purpose of describing embodiments of this disclosure only and is not intended to be limiting of this disclosure.

[0087] It should be understood that in the various embodiments of this disclosure, the sequence number of each implementation process does not imply the order of execution. The execution order of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the embodiments of this disclosure.

[0088] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this disclosure, "a plurality of" means two or more, unless otherwise explicitly specified.

[0089] The above description is merely a specific embodiment of this disclosure, but the scope of protection of this disclosure is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this disclosure should be included within the scope of protection of this disclosure. Therefore, the scope of protection of this disclosure should be determined by the scope of the claims.

Claims

1. A gating control circuit, characterized in that, The gating control circuit includes: a gating module and a priority determination module; The first end of the gating module is electrically connected to at least two power sources, the second end of the gating module is electrically connected to the load device, and the control end of the gating module is electrically connected to the priority determination module. The priority determination module is used to acquire a priority signal, which is used to determine the power supply priority corresponding to the at least two power supplies respectively. The gating module is used to control the connection between the first target power supply and the load device based on the priority signal, and to control the connection between the second target power supply and the load device, so that the first target power supply supplies power to the load device. Wherein, the first target power source is the power source whose power supply priority meets the preset conditions among the at least two power sources, and the second target power source is the power source other than the first target power source among the at least two power sources.

2. The gating control circuit according to claim 1, characterized in that, The at least two power sources include a first power source and a second power source; the priority determination module includes a first acquisition unit, a second acquisition unit, and a comparison unit; The first terminal of the first acquisition unit is electrically connected to the first power supply, and the second terminal of the first acquisition unit is electrically connected to the first input terminal of the comparison unit; the first terminal of the second acquisition unit is electrically connected to the second power supply, and the second terminal of the second acquisition unit is electrically connected to the second input terminal of the comparison unit; the output terminal of the comparison unit is electrically connected to the control terminal of the gating module. The first acquisition unit is used to acquire the first output voltage of the first power supply; The second acquisition unit is used to acquire the second output voltage of the second power supply; The comparison unit is used to determine the priority signal based on the comparison information of the first output voltage and the second output voltage. The priority signal is used to determine the power supply priority of the first power supply and the power supply priority of the second power supply.

3. The gating control circuit according to claim 2, characterized in that, The first acquisition unit includes a first voltage divider subunit and a first acquisition subunit. The first end of the first voltage divider subunit is electrically connected to a first power supply, the second end of the first voltage divider subunit is electrically connected to the first end of the first acquisition subunit, and the second end of the first acquisition subunit is electrically connected to the first input end of the comparison unit. The first voltage divider subunit is used to divide the power supply voltage of the first power supply, and the first acquisition subunit is used to acquire the first output voltage after the power supply voltage of the first power supply is divided. The second acquisition unit includes a second voltage divider subunit and a second acquisition subunit. The first end of the second voltage divider subunit is electrically connected to the second power supply, the second end of the second voltage divider subunit is electrically connected to the first end of the second acquisition subunit, and the second end of the second acquisition subunit is electrically connected to the second input end of the comparison unit. The second voltage divider subunit is used to divide the power supply voltage of the second power supply, and the second acquisition subunit is used to acquire the second output voltage after the power supply voltage of the second power supply is divided.

4. The gating control circuit according to claim 2, characterized in that, The comparison unit includes: A first voltage comparator, wherein the non-inverting input terminal of the first voltage comparator is electrically connected to the second terminal of the first acquisition unit, the inverting input terminal of the first voltage comparator is electrically connected to the second terminal of the second acquisition unit, and the output terminal of the first voltage comparator is electrically connected to the control terminal of the gating module; The first metal-oxide-semiconductor field-effect transistor (MOSFET) has its gate electrically connected to the output terminal of the first voltage comparator, its drain electrically connected to the second power supply and the control terminal of the gating module, and its source electrically connected to the reference voltage terminal. The first voltage comparator is used to determine a first priority signal based on the comparison information between the first output voltage and the second output voltage; The first MOSFET is used to determine a second priority signal based on the first priority signal. The priority signal includes the first priority signal and the second priority signal. The first priority signal and the second priority signal are used together to determine the power supply priority of the first power supply and the power supply priority of the second power supply.

5. The gating control circuit according to claim 1, characterized in that, The at least two power sources include a first power source and a second power source; the priority determination module includes a third power source, a third acquisition unit, and a comparison unit. The first end of the third acquisition unit is electrically connected to the first power supply, and the second end of the third acquisition unit is electrically connected to the first input end of the comparison unit; the third power supply is electrically connected to the second input end of the comparison unit; the output end of the comparison unit is electrically connected to the control end of the gating module. The third acquisition unit is used to acquire the third output voltage of the first power supply; The comparison unit is used to determine the priority signal based on the comparison information between the third output voltage and the power supply voltage of the third power supply. The priority signal is used to determine the power supply priority of the first power supply and the power supply priority of the second power supply.

6. The gating control circuit according to claim 5, characterized in that, The third acquisition unit includes a third voltage divider subunit and a third acquisition subunit. The first end of the third voltage divider subunit is electrically connected to the first power supply, the second end of the third voltage divider subunit is electrically connected to the first end of the third acquisition subunit, and the second end of the third acquisition subunit is electrically connected to the first input end of the comparison unit. The third voltage divider subunit is used to divide the power supply voltage of the first power supply, and the third acquisition subunit is used to acquire the third output voltage of the power supply voltage after voltage division.

7. The gating control circuit according to claim 5, characterized in that, The comparison unit includes: The second voltage comparator has its non-inverting input terminal electrically connected to the second terminal of the third acquisition unit, its inverting input terminal electrically connected to the third power supply, and its output terminal electrically connected to the control terminal of the gating module. The second metal-oxide-semiconductor field-effect transistor (MOSFET) has its gate electrically connected to the output terminal of the second voltage comparator, its drain electrically connected to the second power supply and the control terminal of the gating module, and its source electrically connected to the reference voltage terminal. The second voltage comparator is used to determine a first priority signal based on the comparison information between the third output voltage and the power supply voltage of the third power supply; The second MOSFET is used to determine a second priority signal based on the first priority signal. The priority signal includes the first priority signal and the second priority signal. The first priority signal and the second priority signal are used together to determine the power supply priority of the first power supply and the power supply priority of the second power supply.

8. The gating control circuit according to claim 1, characterized in that, The at least two power sources include a first power source and a second power source; the priority determination module includes a user input unit, which is electrically connected to the control terminal of the gating module. The user input unit is used to acquire user input signals and determine priority signals based on the user input signals. The priority signals are used to determine the power supply priority of the first power supply and the power supply priority of the second power supply.

9. The gating control circuit according to any one of claims 1 to 8, characterized in that, The gating module includes at least two switching units and a gating control unit corresponding to each switching unit; The first terminal of each switch unit is electrically connected to the power supply corresponding to the switch unit, the second terminal of the switch unit is electrically connected to the load device, and the control terminal of the switch unit is electrically connected to the first terminal of the gating control unit corresponding to the switch unit; the control terminal of each gating control unit is electrically connected to the priority determination module. The gating control unit is used to control the corresponding switch unit to close based on the priority signal, so that the power supply and load device corresponding to the switch unit are connected; or, based on the priority signal, control the corresponding switch unit to open, so that the power supply and load device corresponding to the switch unit are disconnected.

10. The gating control circuit according to claim 9, characterized in that, The switching unit includes a first target MOSFET and a second target MOSFET; The source of the first target MOSFET is electrically connected to the source of the second target MOSFET, the drain of the first target MOSFET is electrically connected to the power supply, and the drain of the second target MOSFET is electrically connected to the load device; wherein, the first target MOSFET and the second target MOSFET are P-type MOSFETs, and the gating control unit is composed of N-type MOSFETs; When the priority signal is a high-level signal, both the first target MOSFET and the second target MOSFET turn on in response to the voltage difference between the gate voltage and the source voltage being less than a preset voltage threshold, and the switching unit closes. When the priority signal is low, both the first target MOSFET and the second target MOSFET turn off in response to the voltage difference between the gate voltage and the source voltage being greater than the preset voltage threshold, and the switching unit turns off.

Images