Intelligent power distribution system

Abstract

The utility model discloses an intelligent power distribution system, and relates to the technical field of intelligent power distribution. The first protection module is used for power distribution control; the second protection module is used for power distribution control; the third protection module is used for power distribution control; the current detection module is used for carrying out current sampling and signal processing on the first protection module, the second protection module and the third protection module and judging whether overcurrent occurs or not according to an overcurrent threshold value set by the overcurrent judgment module; the total protection control module is used for stopping total power distribution work when the number of the power distribution branches with overcurrent exceeds a set comparison threshold value; and the output module is used for receiving electric energy. The intelligent power distribution system can carry out independent power-off protection on the power distribution branches with overcurrent faults, meanwhile, the total protection control module judges whether the number of the power distribution branches with the overcurrent faults exceeds a set comparison threshold value or not, if yes, all the power distribution branches are disconnected, and the safety of the power distribution system is improved.

Description

Technical Field

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

[0002] A distribution box is a device that reasonably distributes electrical energy and facilitates the opening and closing operations of output branches. The distribution box in the prior art generally has multiple output branches, and in order to avoid circuit failure and equipment damage caused by overcurrent, each output branch will be tested for overcurrent, and the output branch where overcurrent occurs will be powered off. However, since each output branch can only perform overcurrent detection and overcurrent power-off protection when distributing power, it is impossible to make risk assessments in advance for the output branches that are about to distribute power, resulting in circuit failure and equipment damage. There are certain safety hazards, and therefore it needs to be improved. Utility Model Content

[0003] The embodiment of the utility model provides an intelligent power distribution system to solve the problems raised in the above background technology.

[0004] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0005] An intelligent power distribution system, comprising: a power module, a first protection module, a second protection module, a third protection module, a current detection module, an overcurrent judgment module, a total protection control module and an output module;

[0006] A power module, used for receiving AC power and performing multi-channel output processing on the AC power to output first power, second power and third power;

[0007] A first protection module, connected to the power module, the overcurrent judgment module and the total protection control module, and configured to transmit the first electric energy to the current detection module, and stop transmitting the first electric energy when receiving the first protection signal output by the overcurrent judgment module or the total protection signal output by the total protection control module;

[0008] A second protection module, connected to the power module, the overcurrent judgment module and the total protection control module, is used to transmit the second electric energy to the current detection module, and stop transmitting the second electric energy when receiving the second protection signal output by the overcurrent judgment module or the total protection signal output by the total protection control module;

[0009] A third protection module, connected to the power module, the overcurrent judgment module and the total protection control module, is used to transmit the third electric energy to the current detection module, and stop transmitting the third electric energy when receiving the third protection signal output by the overcurrent judgment module or the total protection signal output by the total protection control module;

[0010] a current detection module, connected to the first protection module, the second protection module and the third protection module, for transmitting the first electric energy, the second electric energy and the third electric energy to the output module, performing current sampling and signal rectification and filtering on the first electric energy, the second electric energy and the third electric energy, and outputting a first sampling signal, a second sampling signal and a third sampling signal respectively;

[0011] an overcurrent judgment module, connected to the current detection module, and used to set a first overcurrent threshold, a second overcurrent threshold, and a third overcurrent threshold, and output a first protection signal when the first sampling signal is greater than the first overcurrent threshold, output a second protection signal when the second sampling signal is greater than the second overcurrent threshold, and output a third protection signal when the third sampling signal is greater than the third overcurrent threshold;

[0012] A total protection control module is connected to the overcurrent judgment module and is used to set a comparison threshold and perform addition processing on the first protection signal, the second protection signal and the third protection signal, and output a total protection signal when the signal after the addition processing is greater than the set comparison threshold;

[0013] The output module is connected to the current detection module and is used to receive the first electric energy, the second electric energy and the third electric energy transmitted by the current detection module.

[0014] As a further solution of the utility model: the power module includes a power interface; the first protection module includes a first relay switch; the second protection module includes a second relay switch; the third protection module includes a third relay switch; the current detection module includes a first mutual inductor, a second mutual inductor and a third mutual inductor; the output module includes a power distribution port;

[0015] Preferably, the first end, the second end and the third end of the power interface are respectively connected to the moving end of the first relay switch, the moving end of the second relay switch and the moving end of the third relay switch, the static end of the second relay switch is connected to the first end of the second mutual inductor, the static end of the first relay switch is connected to the first end of the first mutual inductor, the static end of the third relay switch is connected to the first end of the third mutual inductor, and the second end of the first mutual inductor, the second end of the second mutual inductor and the second end of the third mutual inductor are respectively connected to the first end, the second end and the third end of the distribution port.

[0016] As a further solution of the utility model: the current detection module further includes a first rectifier, a first capacitor, a second rectifier, a second capacitor, a third rectifier and a third capacitor;

[0017] Preferably, the first end and the second end of the first rectifier are respectively connected to the third end and the fourth end of the first mutual inductor, the third end of the first rectifier is connected to the fourth end of the first rectifier and the ground through the first capacitor, the first end and the second end of the second rectifier are respectively connected to the third end and the fourth end of the second mutual inductor, the third end of the second rectifier is connected to the fourth end of the second rectifier and the ground through the second capacitor, the first end and the second end of the third rectifier are respectively connected to the third end and the fourth end of the third mutual inductor, and the third end of the third rectifier is connected to the fourth end of the third rectifier and the ground through the third capacitor.

[0018] As a further solution of the utility model: the overcurrent judgment module includes a first resistor, a second resistor, a third resistor, a first power supply and a first comparator; the first protection module also includes a first diode, a first switch tube, a first relay and a second power supply;

[0019] Preferably, the in-phase end of the first comparator is connected to the third end of the first rectifier through the first resistor, the inverting end of the first comparator is connected to one end of the second resistor and to the first power supply through the third resistor, the other end of the second resistor is grounded, the output end of the first comparator is connected to the anode of the first diode, the cathode of the first diode is connected to the base of the first switching tube, the emitter of the first switching tube is grounded, the collector of the first switching tube is connected to one end of the first relay, and the other end of the first relay is connected to the second power supply.

[0020] As a further solution of the utility model: the overcurrent judgment module also includes a first overcurrent detection device; the second protection module also includes a second switch tube, a second diode, a second relay and a third power supply;

[0021] Preferably, the input end of the first overcurrent detection device is connected to the third end of the second rectifier, the ground end of the first overcurrent detection device is grounded, the output end of the first overcurrent detection device is connected to the anode of the second diode, the cathode of the second diode is connected to the base of the second switching tube, the emitter of the second switching tube is grounded, the collector of the second switching tube is connected to one end of the second relay, and the other end of the second relay is connected to the third power supply.

[0022] As a further solution of the utility model: the overcurrent judgment module also includes a second overcurrent detection device; the third protection module also includes a third diode, a third switch tube, a third relay and a fourth power supply;

[0023] Preferably, the input end of the second overcurrent detection device is connected to the third end of the third rectifier, the ground end of the second overcurrent detection device is grounded, the output end of the second overcurrent detection device is connected to the anode of the third diode, the cathode of the third diode is connected to the base of the third switching tube, the collector of the third switching tube is connected to one end of the third relay, the other end of the third relay is connected to the fourth power supply, and the emitter of the third switching tube is grounded.

[0024] As a further solution of the utility model: the total protection control module includes a fourth diode, a fifth diode, a sixth diode, a fourth resistor, a fifth resistor, a sixth resistor, a first operational amplifier, a seventh resistor, an eighth resistor, a first potentiometer, a seventh diode, an eighth diode, a ninth diode and a tenth diode;

[0025] Preferably, the anode of the fourth diode, the anode of the fifth diode and the anode of the sixth diode are respectively connected to the output end of the first comparator, the output end of the first overcurrent detection device and the output end of the second overcurrent detection device, the cathode of the fourth diode is connected to one end of the fifth resistor, one end of the sixth resistor and the in-phase end of the first operational amplifier through a fourth resistor, the other end of the fifth resistor is connected to the cathode of the fifth diode, the other end of the sixth resistor is connected to the cathode of the sixth diode, the inverting end of the first operational amplifier is connected to one end of the eighth resistor and grounded through the seventh resistor, the output end of the first operational amplifier is connected to the other end of the eighth resistor and connected to the cathode of the seventh diode and the slider end of the first potentiometer through the first potentiometer, the anode of the seventh diode is connected to the anode of the eighth diode, the anode of the ninth diode and the anode of the tenth diode, the cathode of the eighth diode, the cathode of the ninth diode and the cathode of the tenth diode are respectively connected to the base of the first switching tube, the base of the second switching tube and the base of the third switching tube.

[0026] Compared with the prior art, the beneficial effects of the utility model are as follows: the intelligent power distribution system of the utility model is composed of the first protection module, the second protection module and the third protection module to perform multi-channel power distribution control, the overcurrent detection module cooperates with the overcurrent judgment module to perform overcurrent judgment on each distribution branch, and performs power-off protection processing on the distribution branch where overcurrent fault occurs, and the general protection control module determines whether the number of distribution branches where overcurrent occurs exceeds the set comparison threshold. If it exceeds, the general protection control circuit controls the first protection module, the second protection module and the third protection module to cut off the power at the same time, stops the power distribution work of the output module, and improves the safety of the distribution system. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for use in the description of the embodiments of the utility model will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0028] Figure 1 The present invention provides a schematic block diagram of an intelligent power distribution system.

[0029] Figure 2 A circuit diagram of an intelligent power distribution system provided for an example of the utility model.

[0030] Figure 3 This is a connection circuit diagram of the total protection control module provided for an example of the present utility model. DETAILED DESCRIPTION

[0031] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0032] In one embodiment, see Figure 1 , an intelligent power distribution system, comprising: a power module 1, a first protection module 2, a second protection module 3, a third protection module 4, a current detection module 5, an overcurrent judgment module 6, a total protection control module 7 and an output module 8;

[0033] Specifically, the power module 1 is used to receive AC power and perform multi-channel output processing on the AC power to output the first power, the second power and the third power;

[0034] The first protection module 2 is connected to the power module 1, the overcurrent judgment module 6 and the total protection control module 7, and is used to transmit the first electric energy to the current detection module 5, and stop transmitting the first electric energy when receiving the first protection signal output by the overcurrent judgment module 6 or the total protection signal output by the total protection control module 7;

[0035] The second protection module 3 is connected to the power module 1, the overcurrent judgment module 6 and the total protection control module 7, and is used to transmit the second electric energy to the current detection module 5, and stop transmitting the second electric energy when receiving the second protection signal output by the overcurrent judgment module 6 or the total protection signal output by the total protection control module 7;

[0036] The third protection module 4 is connected to the power module 1, the overcurrent judgment module 6 and the total protection control module 7, and is used to transmit the third electric energy to the current detection module 5, and stop transmitting the third electric energy when receiving the third protection signal output by the overcurrent judgment module 6 or the total protection signal output by the total protection control module 7;

[0037] A current detection module 5 is connected to the first protection module 2, the second protection module 3 and the third protection module 4, and is used to transmit the first electric energy, the second electric energy and the third electric energy to the output module 8, perform current sampling and signal rectification and filtering on the first electric energy, the second electric energy and the third electric energy, and output a first sampling signal, a second sampling signal and a third sampling signal respectively;

[0038] an overcurrent judgment module 6, connected to the current detection module 5, for setting a first overcurrent threshold, a second overcurrent threshold and a third overcurrent threshold, and outputting a first protection signal when the first sampling signal is greater than the first overcurrent threshold, outputting a second protection signal when the second sampling signal is greater than the second overcurrent threshold, and outputting a third protection signal when the third sampling signal is greater than the third overcurrent threshold;

[0039] The total protection control module 7 is connected to the overcurrent judgment module 6 and is used to set a comparison threshold and perform addition processing on the first protection signal, the second protection signal and the third protection signal, and output a total protection signal when the signal after the addition processing is greater than the set comparison threshold;

[0040] The output module 8 is connected to the current detection module 5 and is used for receiving the first electric energy, the second electric energy and the third electric energy transmitted by the current detection module 5 .

[0041] In a specific embodiment, the power supply module 1 may adopt a power supply circuit composed of a power supply interface, which may be connected to the AC power to be distributed; the first protection module 2 may adopt a first protection circuit composed of relays, transistors, diodes, etc., which may control the distribution state of the distribution branch; the second protection module 3 may adopt a second protection circuit composed of relays, transistors, diodes, etc., which may control the distribution state of the distribution branch; the third protection module 4 may adopt a third protection circuit composed of relays, transistors, diodes, etc., which may control the distribution state of the distribution branch; the current detection module 5 may adopt a current detection circuit composed of a current transformer, a rectifier and a capacitor to perform current sampling and signal processing on the first protection module 2, the second protection module 3 and the third protection module 4; the overcurrent judgment module 6 may adopt a comparator, a resistor, a first overcurrent detection device, a second overcurrent detection device, etc. The overcurrent judgment circuit composed of the above-mentioned components can set the first overcurrent threshold, the second overcurrent threshold and the third overcurrent threshold, and judge whether overcurrent occurs according to the size relationship between the signal output by the current detection module 5 and the first overcurrent threshold, the second overcurrent threshold and the third overcurrent threshold; the above-mentioned total protection control module 7 can adopt a total protection control circuit composed of resistors, operational amplifiers, diodes, etc., and can perform addition processing on the signal output by the overcurrent judgment module 6. The voltage of the signal obtained by addition can be used to know the number of distribution branches where overcurrent occurs, and set a comparison threshold. When the voltage of the signal obtained by addition is greater than the comparison threshold, the power-off work of the first protection module 2, the second protection module 3 and the third protection module 4 is controlled; the above-mentioned output module 8 can adopt an output circuit composed of distribution ports to receive the distribution branches, that is, the electric energy transmitted by the first protection module 2, the second protection module 3 and the third protection module 4.

[0042] In another embodiment, see Figure 1 , Figure 2 and Figure 3, the power module 1 includes a power interface; the first protection module 2 includes a first relay switch K1-1; the second protection module 3 includes a second relay switch K2-1; the third protection module 4 includes a third relay switch K3-1; the current detection module 5 includes a first transformer CT1, a second transformer CT2 and a third transformer CT3; the output module 8 includes a power distribution port;

[0043] Specifically, the first end, the second end and the third end of the power interface are respectively connected to the moving end of the first relay switch K1-1, the moving end of the second relay switch K2-1 and the moving end of the third relay switch K3-1, the static end of the second relay switch K2-1 is connected to the first end of the second transformer CT2, the static end of the first relay switch K1-1 is connected to the first end of the first transformer CT1, the static end of the third relay switch K3-1 is connected to the first end of the third transformer CT3, and the second end of the first transformer CT1, the second end of the second transformer CT2 and the second end of the third transformer CT3 are respectively connected to the first end, the second end and the third end of the distribution port.

[0044] In a specific embodiment, the first relay switch K1-1, the second relay switch K2-1 and the third relay switch K3-1 may all be normally closed switches; the first transformer CT1, the second transformer CT2 and the third transformer CT3 may all be current transformers.

[0045] Further, the current detection module 5 also includes a first rectifier T1, a first capacitor C1, a second rectifier T2, a second capacitor C2, a third rectifier T3 and a third capacitor C3;

[0046] Specifically, the first end and the second end of the first rectifier T1 are respectively connected to the third end and the fourth end of the first transformer CT1, the third end of the first rectifier T1 is connected to the fourth end of the first rectifier T1 and the ground through the first capacitor C1, the first end and the second end of the second rectifier T2 are respectively connected to the third end and the fourth end of the second transformer CT2, the third end of the second rectifier T2 is connected to the fourth end of the second rectifier T2 and the ground through the second capacitor C2, the first end and the second end of the third rectifier T3 are respectively connected to the third end and the fourth end of the third transformer CT3, and the third end of the third rectifier T3 is connected to the fourth end of the third rectifier T3 and the ground through the third capacitor C3.

[0047] In a specific embodiment, the first rectifier T1 , the second rectifier T2 and the third rectifier T3 may all be full-bridge rectifiers.

[0048] Furthermore, the overcurrent judgment module 6 includes a first resistor R1, a second resistor R2, a third resistor R3, a first power supply VCC1 and a first comparator A1; the first protection module 2 also includes a first diode D1, a first switch tube V1, a first relay K1 and a second power supply VCC2;

[0049] Specifically, the in-phase end of the first comparator A1 is connected to the third end of the first rectifier T1 through the first resistor R1, the inverting end of the first comparator A1 is connected to one end of the second resistor R2 and connected to the first power supply VCC1 through the third resistor R3, the other end of the second resistor R2 is grounded, the output end of the first comparator A1 is connected to the anode of the first diode D1, the cathode of the first diode D1 is connected to the base of the first switch tube V1, the emitter of the first switch tube V1 is grounded, the collector of the first switch tube V1 is connected to one end of the first relay K1, and the other end of the first relay K1 is connected to the second power supply VCC2.

[0050] In a specific embodiment, the first resistor R1 converts the current signal into a voltage signal; the second resistor R2, the third resistor R3 and the first power supply VCC1 provide a first overcurrent threshold; the first comparator A1 can be an LM358 comparator; the first switch tube V1 can be an NPN transistor; the first relay K1 controls the disconnection of the first relay switch K1-1 by magnetic attraction.

[0051] Furthermore, the overcurrent judgment module 6 also includes a first overcurrent detection device; the second protection module 3 also includes a second switch tube V2, a second diode D2, a second relay K2 and a third power supply VCC3;

[0052] Specifically, the input end of the first overcurrent detection device is connected to the third end of the second rectifier T2, the ground end of the first overcurrent detection device is grounded, the output end of the first overcurrent detection device is connected to the anode of the second diode D2, the cathode of the second diode D2 is connected to the base of the second switch tube V2, the emitter of the second switch tube V2 is grounded, the collector of the second switch tube V2 is connected to one end of the second relay K2, and the other end of the second relay K2 is connected to the third power supply VCC3.

[0053] In a specific embodiment, the circuit composition structure of the above-mentioned first overcurrent detection device is the same as the circuit composition structure of the above-mentioned first resistor R1, second resistor R2, third resistor R3, first power supply VCC1 and first comparator A1, which can provide a second overcurrent threshold and perform overcurrent judgment, and the voltage of the signal output by the first overcurrent detection device is the same as the voltage of the high-level state signal output by the first comparator A1; the above-mentioned second switch tube V2 can be an NPN transistor; the above-mentioned second relay K2 controls the disconnection of the second relay switch K2-1 by magnetic attraction.

[0054] Furthermore, the overcurrent judgment module 6 also includes a second overcurrent detection device; the third protection module 4 also includes a third diode D3, a third switch tube V3, a third relay K3 and a fourth power supply VCC4;

[0055] Specifically, the input end of the second overcurrent detection device is connected to the third end of the third rectifier T3, the ground end of the second overcurrent detection device is grounded, the output end of the second overcurrent detection device is connected to the anode of the third diode D3, the cathode of the third diode D3 is connected to the base of the third switch tube V3, the collector of the third switch tube V3 is connected to one end of the third relay K3, the other end of the third relay K3 is connected to the fourth power supply VCC4, and the emitter of the third switch tube V3 is grounded.

[0056] In a specific embodiment, the circuit composition structure of the above-mentioned second overcurrent detection device is the same as the circuit composition structure of the above-mentioned first resistor R1, second resistor R2, third resistor R3, first power supply VCC1 and first comparator A1, which can provide a third overcurrent threshold and perform overcurrent judgment, and the voltage of the signal output by the second overcurrent detection device is the same as the voltage of the high-level state signal output by the first comparator A1; the above-mentioned third switch tube V3 can be an NPN type transistor; the above-mentioned third relay K3 controls the disconnection of the third relay switch K3-1 by magnetic attraction.

[0057] Further, the overall protection control module 7 includes a fourth diode D4, a fifth diode D5, a sixth diode D6, a fourth resistor R4, a fifth resistor R5, a sixth resistor R6, a first operational amplifier OP1, a seventh resistor R7, an eighth resistor R8, a first potentiometer RP1, a seventh diode D7, an eighth diode D8, a ninth diode D9 and a tenth diode D10;

[0058] Specifically, the anode of the fourth diode D4, the anode of the fifth diode D5 and the anode of the sixth diode D6 are respectively connected to the output end of the first comparator A1, the output end of the first overcurrent detection device and the output end of the second overcurrent detection device, the cathode of the fourth diode D4 is connected to one end of the fifth resistor R5, one end of the sixth resistor R6 and the in-phase end of the first operational amplifier OP1 through the fourth resistor R4, the other end of the fifth resistor R5 is connected to the cathode of the fifth diode D5, the other end of the sixth resistor R6 is connected to the cathode of the sixth diode D6, and the inverting end of the first operational amplifier OP1 is connected to the eighth resistor R6. One end of R8 is grounded through the seventh resistor R7, the output end of the first operational amplifier OP1 is connected to the other end of the eighth resistor R8 and is connected to the cathode of the seventh diode D7 and the slider end of the first potentiometer RP1 through the first potentiometer RP1, the anode of the seventh diode D7 is connected to the anode of the eighth diode D8, the anode of the ninth diode D9 and the anode of the tenth diode D10, the cathode of the eighth diode D8, the cathode of the ninth diode D9 and the cathode of the tenth diode D10 are respectively connected to the base of the first switch tube V1, the base of the second switch tube V2 and the base of the third switch tube V3.

[0059] In a specific embodiment, the fourth diode D4, the fifth diode D5 and the sixth diode D6 perform unidirectional transmission control of electric energy; the first operational amplifier OP1 can select an OP07 operational amplifier, and cooperate with the fourth resistor R4, the fifth resistor R5, the sixth resistor R6, the seventh resistor R7 and the eighth resistor R8 to perform in-phase addition processing; the first potentiometer RP1 and the seventh diode D7 set a comparison threshold, and the comparison threshold is a multiple relationship with the output voltage of the first comparator A1.

[0060] In an intelligent power distribution system of the present embodiment, AC power is connected to a power interface, and the first relay switch K1-1, the second relay switch K2-1 and the third relay switch K3-1 perform power transmission control, and transmit the power to the distribution port through the first transformer CT1, the second transformer CT2 and the third transformer CT3 respectively. When the distribution branch controlled by the first relay switch K1-1 is connected to the electrical equipment, a loop is formed, so that the first transformer CT1 starts to sample the current, and the sampled signal is rectified and filtered by the first rectifier T1 and the first capacitor C1, and then converted into a voltage signal by the first resistor R1. When the converted signal is greater than the first overcurrent threshold set by the second resistor R2, the third resistor R3 and the first power supply VCC1, the first comparator A1 outputs a high level, controls the first switch tube V1 to turn on, and the first relay K1 is energized and controls the first relay switch K1-1 to turn off, and stops power supply. Similarly, when the first overcurrent detection device cooperates with the second transformer CT2 to detect that the power transmitted by the second relay switch K2-1 is overcurrent , controls the second switch tube V2 to be turned on, the second relay K2 is energized and controls the second relay switch K2-1 to be turned off, and when the second overcurrent detection device detects that the electric energy transmitted by the third relay switch K3-1 is overcurrent, the third relay switch K3-1 is turned off. When the comparison threshold set by the first potentiometer RP1 and the seventh diode D7 is twice the voltage output by the first comparator A1, it means that as long as there are two distribution branches controlled by the first relay switch K1-1, the second relay switch K2-1 or the third relay switch K3-1, In case of overcurrent in the branch, the signal added by the first operational amplifier OP1, the sixth resistor R6, the fifth resistor R5, the fourth resistor R4, the seventh resistor R7 and the eighth resistor R8 will break down the seventh diode D7, and then control the first switch tube V1, the second switch tube V2 and the third switch tube V3 to be turned on, so that the first relay switch K1-1, the second relay switch K2-1 and the third relay switch K3-1 are all disconnected, and the power distribution work is stopped, so as to avoid overcurrent in the distribution branch that is not distributing power when distributing power.

[0061] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

[0062] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. An intelligent power distribution system, characterized in that: The intelligent power distribution system comprises: a power supply module, a first protection module, a second protection module, a third protection module, a current detection module, an overcurrent judgment module, a total protection control module and an output module; The power supply module is used to receive AC power and perform multi-channel output processing on the AC power to output the first power, the second power and the third power; The first protection module is connected to the power module, the overcurrent judgment module and the total protection control module, and is used to transmit the first electric energy to the current detection module, and stop transmitting the first electric energy when receiving the first protection signal output by the overcurrent judgment module or the total protection signal output by the total protection control module; The second protection module is connected to the power module, the overcurrent judgment module and the total protection control module, and is used to transmit the second electric energy to the current detection module, and stop transmitting the second electric energy when receiving the second protection signal output by the overcurrent judgment module or the total protection signal output by the total protection control module; The third protection module is connected to the power module, the overcurrent judgment module and the total protection control module, and is used to transmit the third electric energy to the current detection module, and stop transmitting the third electric energy when receiving the third protection signal output by the overcurrent judgment module or the total protection signal output by the total protection control module; The current detection module is connected to the first protection module, the second protection module and the third protection module, and is used to transmit the first electric energy, the second electric energy and the third electric energy to the output module, perform current sampling and signal rectification and filtering on the first electric energy, the second electric energy and the third electric energy, and output a first sampling signal, a second sampling signal and a third sampling signal respectively; The overcurrent judgment module is connected to the current detection module, and is used to set a first overcurrent threshold, a second overcurrent threshold, and a third overcurrent threshold, and output a first protection signal when the first sampling signal is greater than the first overcurrent threshold, output a second protection signal when the second sampling signal is greater than the second overcurrent threshold, and output a third protection signal when the third sampling signal is greater than the third overcurrent threshold; The total protection control module is connected to the overcurrent judgment module, and is used to set a comparison threshold and perform addition processing on the first protection signal, the second protection signal and the third protection signal, and output a total protection signal when the signal after the addition processing is greater than the set comparison threshold; The output module is connected to the current detection module and is used to receive the first electric energy, the second electric energy and the third electric energy transmitted by the current detection module.

2. The intelligent power distribution system according to claim 1, characterized in that: The power module includes a power interface; the first protection module includes a first relay switch; the second protection module includes a second relay switch; the third protection module includes a third relay switch; the current detection module includes a first mutual inductor, a second mutual inductor and a third mutual inductor; the output module includes a power distribution port; The first end, the second end and the third end of the power interface are respectively connected to the moving end of the first relay switch, the moving end of the second relay switch and the moving end of the third relay switch, the static end of the second relay switch is connected to the first end of the second mutual inductor, the static end of the first relay switch is connected to the first end of the first mutual inductor, the static end of the third relay switch is connected to the first end of the third mutual inductor, and the second end of the first mutual inductor, the second end of the second mutual inductor and the second end of the third mutual inductor are respectively connected to the first end, the second end and the third end of the power distribution port.

3. The intelligent power distribution system according to claim 2, characterized in that: The current detection module further includes a first rectifier, a first capacitor, a second rectifier, a second capacitor, a third rectifier and a third capacitor; The first end and the second end of the first rectifier are respectively connected to the third end and the fourth end of the first mutual inductor, the third end of the first rectifier is connected to the fourth end of the first rectifier and the ground through the first capacitor, the first end and the second end of the second rectifier are respectively connected to the third end and the fourth end of the second mutual inductor, the third end of the second rectifier is connected to the fourth end of the second rectifier and the ground through the second capacitor, the first end and the second end of the third rectifier are respectively connected to the third end and the fourth end of the third mutual inductor, and the third end of the third rectifier is connected to the fourth end of the third rectifier and the ground through the third capacitor.

4. The intelligent power distribution system according to claim 3, characterized in that: The overcurrent judgment module includes a first resistor, a second resistor, a third resistor, a first power supply and a first comparator; the first protection module also includes a first diode, a first switch tube, a first relay and a second power supply; The in-phase end of the first comparator is connected to the third end of the first rectifier through the first resistor, the inverting end of the first comparator is connected to one end of the second resistor and is connected to the first power supply through the third resistor, the other end of the second resistor is grounded, the output end of the first comparator is connected to the anode of the first diode, the cathode of the first diode is connected to the base of the first switch tube, the emitter of the first switch tube is grounded, the collector of the first switch tube is connected to one end of the first relay, and the other end of the first relay is connected to the second power supply.

5. An intelligent power distribution system according to claim 4, characterized in that: The overcurrent judgment module also includes a first overcurrent detection device; the second protection module also includes a second switch tube, a second diode, a second relay and a third power supply; The input end of the first overcurrent detection device is connected to the third end of the second rectifier, the ground end of the first overcurrent detection device is grounded, the output end of the first overcurrent detection device is connected to the anode of the second diode, the cathode of the second diode is connected to the base of the second switching tube, the emitter of the second switching tube is grounded, the collector of the second switching tube is connected to one end of the second relay, and the other end of the second relay is connected to the third power supply.

6. The intelligent power distribution system according to claim 5, characterized in that: The overcurrent judgment module also includes a second overcurrent detection device; the third protection module also includes a third diode, a third switch tube, a third relay and a fourth power supply; The input end of the second overcurrent detection device is connected to the third end of the third rectifier, the ground end of the second overcurrent detection device is grounded, the output end of the second overcurrent detection device is connected to the anode of the third diode, the cathode of the third diode is connected to the base of the third switching tube, the collector of the third switching tube is connected to one end of the third relay, the other end of the third relay is connected to the fourth power supply, and the emitter of the third switching tube is grounded.

7. An intelligent power distribution system according to claim 6, characterized in that: The overall protection control module includes a fourth diode, a fifth diode, a sixth diode, a fourth resistor, a fifth resistor, a sixth resistor, a first operational amplifier, a seventh resistor, an eighth resistor, a first potentiometer, a seventh diode, an eighth diode, a ninth diode and a tenth diode; The anodes of the fourth diode, the fifth diode and the sixth diode are respectively connected to the output end of the first comparator, the output end of the first overcurrent detection device and the output end of the second overcurrent detection device, the cathode of the fourth diode is connected to one end of the fifth resistor, one end of the sixth resistor and the in-phase end of the first operational amplifier through a fourth resistor, the other end of the fifth resistor is connected to the cathode of the fifth diode, the other end of the sixth resistor is connected to the cathode of the sixth diode, the inverting end of the first operational amplifier is connected to one end of the eighth resistor and grounded through the seventh resistor, the output end of the first operational amplifier is connected to the other end of the eighth resistor and connected to the cathode of the seventh diode and the slider end of the first potentiometer through the first potentiometer, the anode of the seventh diode is connected to the anode of the eighth diode, the anode of the ninth diode and the anode of the tenth diode, the cathode of the eighth diode, the cathode of the ninth diode and the cathode of the tenth diode are respectively connected to the base of the first switching tube, the base of the second switching tube and the base of the third switching tube.

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