A full-matrix flexible power distribution system

Abstract

This application provides a full-matrix flexible power distribution system, including a switch state judgment module, n charging modules, n copper busbars, m switch modules, and m charging guns. The positive terminal of each charging module is connected to the corresponding copper busbar circuit via cables. Each switch module includes the same number of n switches as the charging modules. The input terminals of the n switches are connected to the corresponding copper busbar circuit, and the output terminals of the n switches are connected in parallel to the corresponding charging gun. The switch state judgment module is connected to the input terminal and the parallel output terminal of each switch. By comparing the voltage at the input terminal and the parallel output terminal of each switch, the system determines whether a switch has a sticking fault or poor contact, and outputs a signal to cut off the power supply to the input terminal of the corresponding switch. This application can quickly call up the required charging modules to achieve on-demand allocation of charging power, ensuring the utilization rate of multiple charging guns. Furthermore, it can detect whether the switches are sticking, improving the safety of the charging pile.

Description

Technical Field

[0001] This application relates to the field of charging pile technology, and in particular, to a full-matrix flexible power distribution system. Background Technology

[0002] With the rapid development of new energy vehicles, the use of charging piles is increasing; and the charging power and charging current are gradually increasing, shortening the charging time and improving the charging efficiency. The power of charging piles has been upgraded from the traditional 60kW DC charging piles to 120kW dual-gun charging piles, and now to 600kW or larger charging piles. A power pile consists of a charging host and multiple charging guns. The charging guns can be divided into fast charging guns (charging current up to 250A) and supercharging guns (charging current up to 800A). The larger the power of the charging pile, the more charging modules and charging guns are used. The charging pile uses control strategies to call and control the output of the charging modules to meet the charging power requirements of each charging gun.

[0003] Currently, in the flexible charging control strategy for charging piles, group calling is used, which calls several charging modules as a whole. When calling them as a whole, the charging modules are connected in a ring through switching switches. However, both of these methods have the drawback of not being able to arbitrarily allocate each charging module, resulting in each charging module not being fully utilized and low utilization efficiency.

[0004] CN118024935A discloses a flexible power topology system and control method. The method consists of 12 charging modules and 12 charging guns. Its main advantages are that it can achieve supercharging and conditional on-demand allocation of charging modules. However, it has the following shortcomings: This scheme divides 6 modules into a group, and only 11 charging modules can be called during supercharging, which cannot output full power. In addition, the number of charging modules and charging guns must be consistent, which has limitations in practical use. Another shortcoming of this scheme is that when a gun calls its own charging module and also calls the charging modules on its left and right, the charging guns corresponding to the left and right called charging modules need to be disconnected when they need to be put into use. Other callable but uncalled modules need to be re-added to the calling of this gun. The control strategy is complex and the switching back and forth leads to low efficiency.

[0005] The flexible charging methods disclosed in CN115972965A and CN219115263U both involve setting switching switches between charging modules. However, they both fail to enable each charging gun to call any charging module, thus failing to leverage the high utilization rate of multi-gun charging in the charging stack.

[0006] CN112590605 discloses a full matrix distribution method and apparatus for high-power DC chargers. Although it can call any number of charging modules, it cannot conveniently detect whether the switches in the power distribution unit have a sticking fault. If the switches in the power distribution unit fail to engage, it only means that charging cannot proceed normally. However, if the switches stick together, it may cause damage to the charging modules or the risk of electric shock to personnel, posing a significant safety hazard.

[0007] In summary, currently used flexible charging methods cannot arbitrarily call every charging module for each charging gun, and cannot quickly call the required charging module when the charging power changes. They cannot achieve true on-demand allocation of charging power, and the charging pile fails to take full advantage of the high utilization rate of multiple charging guns. Therefore, it is necessary to study a method that can conveniently detect whether the switch is stuck and can enable each charging gun to call any unused charging module, thereby improving the utilization rate and safety of the charging pile. Utility Model Content

[0008] This application provides a full-matrix flexible power distribution system to solve the technical problems of low utilization rate and safety hazards of existing multi-charging-gun charging piles.

[0009] The technical solution adopted in this application is as follows:

[0010] A full-matrix flexible power distribution system includes a switch state judgment module, n charging modules, n copper busbars, m switch modules, and m charging guns. The positive output terminal of each charging module is connected to the corresponding copper busbar circuit via cables. Each switch module includes n switches, the same number as the charging modules. The input terminals of the n switches are connected to the corresponding copper busbars via cables. The output terminals of the n switches are connected in parallel to the corresponding charging gun. The switch state judgment module is connected to the circuits at the input terminal and the parallel output terminal of each switch. By comparing the voltage at the input terminal and the parallel output terminal of each switch, the system determines whether the corresponding switch has a sticking fault or poor contact and outputs a signal to cut off the power supply to the input terminal of the corresponding switch.

[0011] Furthermore, a switch status judgment module is installed between the input terminal and the parallel output terminal of each switch. By comparing the voltage at the input terminal and the parallel output terminal of each switch, the power supply to the input terminal of the corresponding switch is cut off when a sticking fault or poor contact occurs.

[0012] Furthermore, the switch status judgment module includes two voltage detection pins and one output pin. The two voltage detection pins are respectively connected to the input terminal and the parallel output terminal of the corresponding switch. The output pin is connected to the input terminal of the corresponding switch. When the switch status judgment module determines that the corresponding switch has a sticking fault or poor contact based on the voltage comparison result of the two voltage detection pins, it sends a cut-off signal to the output terminal of the corresponding switch to cut off the power supply to the input terminal of the corresponding switch.

[0013] Furthermore, the switch state determination module also includes an enable pin, and the switch state determination module only performs detection when the enable pin is input with voltage.

[0014] Furthermore, each switch status determination module uses an independent voltage comparator.

[0015] Furthermore, each switch module is equipped with a corresponding switch status judgment module. The switch status judgment module is connected to all the input terminals and parallel output terminals of the switch module. By comparing the voltage of the input terminal and parallel output terminal of each switch in the corresponding switch module, the power supply to the input terminal of the corresponding switch is cut off when the corresponding switch has a sticking fault or poor contact.

[0016] Furthermore, the switch state judgment module is an integrated circuit structure, including n+1 voltage detection pins and n output pins. One of the n+1 voltage detection pins is connected to the parallel output terminal of the corresponding switch module, and the remaining n voltage detection pins are respectively connected to the input terminals of the n switches in the corresponding switch module. The n output pins are respectively connected to the input terminals of each switch in the corresponding switch module. When the switch state judgment module determines that a corresponding switch in the corresponding switch module has a sticking fault or poor contact based on the voltage comparison result of the voltage detection pins, it sends a cut-off signal to the output terminal of the corresponding switch in the corresponding switch module to cut off the power supply to the input terminal of the corresponding switch.

[0017] Furthermore, the switch state determination module also includes an enable pin, and the switch state determination module only performs detection when the enable pin is input with voltage.

[0018] Furthermore, the switch state determination module employs an integrated voltage comparator.

[0019] Furthermore, each switch has a semiconductor switch at its input terminal. The semiconductor switch is connected to the switch state judgment module circuit and is used to cut off the power supply to the input terminal of the corresponding switch when the switch state judgment module determines that the corresponding switch has a sticking fault or poor contact.

[0020] Compared with the prior art, this application has the following advantages:

[0021] Compared with the prior art, this embodiment has the following beneficial effects:

[0022] 1. This application enables each charging gun to call any single module or all modules to meet the charging gun's needs with optimal power, thereby improving the utilization rate of the charging pile;

[0023] 2. This application can realize supercharging functions with different power levels. During supercharging, all charging modules can be selected, or a suitable charging module can be selected according to the power requirements of the supercharging gun, so as to provide efficient and flexible charging for the battery.

[0024] 3. The number of charging guns and charging modules in this application can be combined according to actual needs, which is more in line with actual application conditions;

[0025] 4. In this application, a switch status detection module is added to the switch output terminal of the switch module. This module can detect the status of each switch in the switch module, as well as detect whether there is a switch sticking fault or poor contact in all switches in the switch module. Furthermore, the added switch status detection module does not affect the normal use of the charging pile when it malfunctions, thus improving reliability and safety.

[0026] In addition to the purposes, features, and advantages described above, this application has other purposes, features, and advantages. The application will now be described in further detail with reference to the accompanying drawings. Attached Figure Description

[0027] The accompanying drawings, which form part of this application, are used to provide a further understanding of this application. The illustrative embodiments and descriptions of this application are used to explain this application and do not constitute an undue limitation of this application. In the drawings:

[0028] Figure 1 This is a schematic diagram of the structure of a full-matrix flexible power distribution system according to a preferred embodiment of this application.

[0029] Figure 2 This is a partial structural diagram of a full-matrix flexible power distribution system according to a preferred embodiment of this application.

[0030] Figure 3 This is a schematic diagram of the structure of a full-matrix flexible power distribution system according to another preferred embodiment of this application. Detailed Implementation

[0031] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0032] It should be noted that if the embodiments of this utility model involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a specific posture. If the specific posture changes, the directional indicators will also change accordingly.

[0033] Furthermore, if the embodiments of this utility model involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the use of "and / or" or "and / or" throughout the text includes three parallel solutions. For example, "A and / or B" includes solution A, solution B, or a solution where both A and B are satisfied simultaneously. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0034] Currently used flexible charging methods have limitations: each charging gun cannot arbitrarily call every charging module, and when the charging power changes, it cannot quickly call the required charging module, thus failing to achieve true on-demand charging power allocation. As a result, charging piles fail to leverage the high utilization rate of multiple charging guns. Therefore, it is necessary to research a method that can conveniently detect whether the switch is stuck or has poor contact, and can enable each charging gun to arbitrarily call any unused charging module, thereby improving the utilization rate and safety of charging piles.

[0035] In view of the above situation, referring to Figure 1 and Figure 2 A preferred embodiment of this application provides a full-matrix flexible power distribution system, including a switch state judgment module, n charging modules, n copper busbars, m switch modules, and m charging guns. The positive output terminal of each charging module is connected to the corresponding copper busbar circuit via cables. Each switch module includes n switches, the same number as the charging modules. The input terminals of the n switches are connected to the corresponding copper busbars via cables. The output terminals of the n switches are connected in parallel to the corresponding charging guns. The switch state judgment module is connected to the circuits at the input terminal and the parallel output terminal of each switch. By comparing the voltage at the input terminal and the parallel output terminal of each switch, the module determines whether the corresponding switch has a sticking fault or poor contact and outputs a signal to cut off the power supply to the input terminal of the corresponding switch.

[0036] Wherein: DC1+ is the positive output of charging module 1, and DCn+ is the positive output of charging module n; the positive outputs of charging modules DC1+ to DCn+ are connected one-to-one to copper busbars 1 to n via cables; the switch module mainly consists of n switches, the same number as the charging modules, with the input terminals connected one-to-one to copper busbars 1 to n, and the output terminals of the n switches connected in parallel to the charging gun. The system can control the on / off state of the switches in the switch module to allow any charging gun to call the selected charging module, realizing on-demand calling of charging modules and achieving flexible charging function.

[0037] Specifically, a switch status judgment module is set between the input terminal and the parallel output terminal of each switch. By comparing the voltage of the input terminal and the parallel output terminal of each switch, the power supply to the input terminal of the corresponding switch is cut off when a sticking fault occurs.

[0038] Specifically, the switch status judgment module includes two voltage detection pins (pins 1 and 2) and one output pin (pin 3). The two voltage detection pins are respectively connected to the input terminal and the parallel output terminal of the corresponding switch. The output pin is connected to the input terminal of the corresponding switch. When the switch status judgment module determines that the corresponding switch has a sticking fault or poor contact based on the voltage comparison result of the two voltage detection pins, it sends a cut-off signal to the output terminal of the corresponding switch to cut off the power supply to the input terminal of the corresponding switch.

[0039] Specifically, the switch state determination module also includes an enable pin (pin 4), and the switch state determination module only performs detection when the enable pin is input with voltage.

[0040] Specifically, each switch status determination module uses an independent voltage comparator or an LV25-P voltage detector from LEM.

[0041] Compared with the prior art, this embodiment has the following beneficial effects:

[0042] 1. This embodiment can enable each charging gun to call any single module or all modules to meet the charging gun's needs with optimal power, thereby improving the utilization rate of the charging pile.

[0043] 2. This embodiment can realize supercharging functions with different power levels. During supercharging, all charging modules can be selected, or a suitable charging module can be selected according to the power requirements of the supercharging gun, so as to provide efficient and flexible charging for the battery.

[0044] 3. The number of charging guns and charging modules in this embodiment can be combined according to actual needs, which is more in line with actual application.

[0045] 4. In this embodiment, a switch status detection module is added to the switch output terminal of the switch module. This module can detect the status of each switch in the switch module and also detect whether there is a switch sticking fault in all switches in the switch module. Moreover, the added switch status detection module will not affect the normal use of the charging pile when it malfunctions or has poor contact, thus improving reliability and safety.

[0046] The full-matrix flexible power allocation process in the above embodiments is as follows:

[0047] 1. One or more of the m charging guns are connected to the battery to be charged to complete the status interaction between the charging gun and the battery to be charged.

[0048] 2. The battery to be charged sends the required charging power to the corresponding charging gun;

[0049] 3. Based on the total unused charging power and the optimal efficiency curve of the charging modules, the system calculates the number of charging modules that need to be called for each charging gun to ensure that the charging pile can operate at the optimal efficiency point.

[0050] 4. The system sets the output parameters of the charging modules according to the number of charging modules required for each charging gun, and activates the switch in the corresponding switch module to enable the charging gun to call the required charging modules.

[0051] 5. The charging modules are each connected to their corresponding charging guns to achieve the charging function, and the charging modules operate at their optimal efficiency points. An example illustrating the simultaneous charging process of i (i≤m) charging guns will be provided, primarily elaborating on step 3 above:

[0052] The system determines the total power required by i batteries to be charged. when:

[0053] a) The required power is P a Less than the total power P not called by the system uut

[0054] P uut =P t -P ut ;P t The total available power of the system is the sum of the power of n charging modules. For example, if the power of a single charging module is P... c P t =n*P c ,P ut The power of the charging module that has been activated;

[0055] The number of charging modules allocated to each battery to be charged is: That is, P k / P cRounding up gives the number of charging modules allocated to this battery, and also the number of switches that should be engaged in the corresponding switch module for this charging gun. The status is fed back to the system through the auxiliary contacts of the engaged switches in the switch module, indicating that the corresponding charging module has been activated and the switches in other switch modules at the corresponding positions cannot be activated again to prevent this charging module from being activated again during operation.

[0056] b) The required power is P a Greater than the total power P not used by the system uut ;

[0057] The unused total power P uut All outputs are sent to the battery to be charged, that is, all unused charging modules are used;

[0058] c) The above process is a dynamic adjustment process. As the charging time of the battery increases, the battery voltage increases and the required power decreases. If the system is in the above-mentioned operating condition b, the switch in the switching module can be disconnected according to the calculation in step a above, and the charging module can be released. This released charging module can be re-entered into operating condition b. If operating condition b does not exist, the load rate η of the charging module can be calculated. Whether the load rate η is at the load rate required for the charging module to be in the highest efficiency zone can be used to determine whether the charging module needs to be released. If the efficiency of the charging module corresponding to the load rate η1 after release is higher than the efficiency corresponding to the load rate η of the charging module before release, then the charging module is released. Otherwise, the existing state remains unchanged.

[0059] d) Once all batteries are fully charged, release all charging modules and wait for charging to resume, repeating the above process.

[0060] The switch status judgment module can determine the status of the switch and detect whether the switch is stuck or has poor contact (if the contact is good, there is voltage before and after, and the differential voltage is very small; but if the contact is poor or the contact resistance is high due to contact oxidation, the voltage difference before and after will be large. Therefore, the contact status in this switch module can be judged in advance by the voltage difference). When a fault occurs, the output circuit can be forcibly disconnected to improve the safety of the charging pile.

[0061] In the switch status judgment module, pins 1 and 2 are voltage detection pins; pin 3 is an output pin that can disconnect the corresponding contact; pin 4 is an enable pin, and the switch status judgment module will only perform detection when there is voltage input at pin 4.

[0062] The working principle of the switch status determination module is as follows:

[0063] 1. Check if the switches in the switch module are stuck: When the charging pile is ready to charge, the charging module outputs voltage, which can be detected by pin 1 of the switch status detection module. At this time, none of the switches in the switch module are closed. Pin 2 of the switch status detection module detects whether there is voltage. If a voltage is present, it means that the switch is stuck. Pin 3 outputs to disconnect the detection voltage of pin 1 of the switch status detection module, cut off the high voltage output of this circuit, and ensure the safety of the charging pile.

[0064] 2. Check if the switch contact status of the switch module is good: When the charging pile is ready to charge, the charging module outputs voltage, which can be detected by pin 1 of the switch status detection module. During charging, the switch in the switch module is closed, and pin 2 of the switch status detection module detects the presence of voltage. Comparing the detected voltages of pins 1 and 2 of the switch status detection module, if the contact resistance is high due to poor switch contact or contact oxidation, a large voltage difference will occur. At this time, the detected voltage of pin 2 of the switch status detection module is significantly lower than that of pin 1. Although the charging pile can charge normally at this time, the switch status of the switch module is not good, the resistance value is high, and the energy consumption is high.

[0065] 3. When it is necessary to follow Figure 2 When checking whether all switches in the switch module are stuck and in good condition, each switch needs to be tested individually. Taking switch 1 in the switch module as an example, first, make the output voltage of the charging module connected to the copper busbar corresponding to switch 1 in the switch module, so that the corresponding copper busbar and the switch input pin 1 of the switch module have corresponding voltage; power the enable pin 4 to enter the detection state. When switch 1 in the switch module is not engaged and all other switches are open, the voltage value at pin 2 should be zero, which proves that switch 1 in the switch module is not stuck. When switch 1 in the switch module is engaged and all other switches are open, check and compare the detection voltages of pins 1 and 2 of the switch status detection module. If the detection voltage at pin 2 of the switch status detection module is significantly lower than the detection voltage at pin 1, although the charging pile's charging function is normal at this time, the switch status of the switch module is not good. Cut off the high voltage output of this circuit to ensure the safety of the charging pile.

[0066] 4. When the switch status detection module itself malfunctions, power can be withheld from enable pin 4, meaning the switch status detection module will not be used, thus not affecting the charging function of the charging pile and improving its reliability.

[0067] like Figure 3As shown, in a preferred embodiment of this application, each switch module is provided with a corresponding switch state judgment module. The switch state judgment module is connected to all the input terminals and parallel output terminals of the switch module. By comparing the voltage of the input terminal and parallel output terminal of each switch in the corresponding switch module, the power supply to the input terminal of the corresponding switch is cut off when the corresponding switch has a sticking fault or poor contact.

[0068] Specifically, the switch state judgment module is an integrated circuit structure, including n+1 voltage detection pins and n output pins. One of the n+1 voltage detection pins is connected to the parallel output terminal of the corresponding switch module, and the remaining n voltage detection pins are respectively connected to the input terminals of the n switches in the corresponding switch module. The n output pins are respectively connected to the input terminals of each switch in the corresponding switch module. When the switch state judgment module determines that a corresponding switch in the corresponding switch module has a sticking fault or poor contact based on the voltage comparison result of the voltage detection pins, it sends a cut-off signal to the output terminal of the corresponding switch in the corresponding switch module to cut off the power supply to the input terminal of the corresponding switch.

[0069] Specifically, the switch state determination module also includes an enable pin, and the switch state determination module only performs detection when the enable pin is input with voltage.

[0070] Specifically, the switch state determination module uses an integrated voltage comparator.

[0071] Unlike the previous embodiments, each switch module in this embodiment is provided with only one integrated switch state judgment module. In essence, the integrated switch state judgment module actually integrates multiple of the aforementioned embodiments. Figure 1 and Figure 2 The integrated switch status judgment module detects the voltage values ​​of the switch input and output when performing switch adhesion and status detection on each switch in the switch module. This can be optimized into an integrated switch judgment module, which can greatly simplify wiring and save installation space. The detection sequence and logic in this embodiment are basically the same as those in the previous embodiment, and will not be repeated here.

[0072] In a preferred embodiment of this application, each switch is equipped with a semiconductor switch, such as a MOSFET switch, an IGBT switch, or a thyristor, which has advantages such as high performance, high reliability, and long life. The semiconductor switch is connected to the switch state judgment module circuit and is used to cut off the power supply to the input terminal of the corresponding switch when the corresponding switch has a sticking fault or poor contact, according to the output signal of the switch state judgment module.

[0073] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A full-matrix flexible power distribution system, characterized by, The system includes a switch status judgment module, n charging modules, n copper busbars, m switch modules, and m charging guns. The positive output terminal of each charging module is connected to the corresponding copper busbar circuit via cables. Each switch module includes the same number of n switches as the charging modules. The input terminals of the n switches are connected to the corresponding copper busbars via cables, and the output terminals of the n switches are connected in parallel to the corresponding charging gun. The switch status judgment module is connected to the circuits at the input terminal and the parallel output terminal of each switch. By comparing the voltage at the input terminal and the parallel output terminal of each switch, the system determines whether the corresponding switch has a sticking fault or poor contact and outputs a signal to cut off the power supply to the input terminal of the corresponding switch.

2. The full-matrix flexible power distribution system according to claim 1, characterized in that: Each switch is equipped with a switch status judgment module between its input terminal and parallel output terminal. By comparing the voltage at the input terminal and parallel output terminal of each switch, the module determines whether the corresponding switch has a sticking fault or poor contact and cuts off the power supply to the input terminal of the corresponding switch.

3. The full-matrix flexible power distribution system of claim 2, wherein: The switch status judgment module includes two voltage detection pins and one output pin. The two voltage detection pins are respectively connected to the input terminal and the parallel output terminal of the corresponding switch. The output pin is connected to the input terminal of the corresponding switch. When the switch status judgment module determines that the corresponding switch has a sticking fault or poor contact based on the voltage comparison result of the two voltage detection pins, it sends a cut-off signal to the output terminal of the corresponding switch to cut off the power supply to the input terminal of the corresponding switch.

4. The full-matrix flexible power distribution system of claim 3, wherein: The switch state determination module also includes an enable pin, and the switch state determination module will only perform detection when the enable pin is input with voltage.

5. The full-matrix flexible power distribution system of claim 4, wherein: Each switch status determination module uses an independent voltage comparator.

6. The full-matrix flexible power distribution system of claim 1, wherein: Each switch module is equipped with a corresponding switch status judgment module. The switch status judgment module is connected to all the input terminals and parallel output terminals of the switch module. By comparing the voltage of the input terminal and parallel output terminal of each switch in the corresponding switch module, the power supply to the input terminal of the corresponding switch is cut off when the corresponding switch has a sticking fault or poor contact.

7. The full-matrix flexible power distribution system of claim 6, wherein: The switch status judgment module is an integrated circuit structure, including n+1 voltage detection pins and n output pins. One of the n+1 voltage detection pins is connected to the parallel output terminal of the corresponding switch module, and the remaining n voltage detection pins are respectively connected to the input terminals of the n switches in the corresponding switch module. The n output pins are respectively connected to the input terminals of each switch in the corresponding switch module. When the switch status judgment module determines that a corresponding switch in the corresponding switch module has a sticking fault or poor contact based on the voltage comparison result of the voltage detection pins, it sends a cut-off signal to the output terminal of the corresponding switch in the corresponding switch module to cut off the power supply to the input terminal of the corresponding switch.

8. The full-matrix flexible power distribution system of claim 7, wherein: The switch state determination module also includes an enable pin, and the switch state determination module will only perform detection when the enable pin is input with voltage.

9. The full-matrix flexible power distribution system according to claim 8, characterized in that: The switch state determination module uses an integrated voltage comparator.

10. The full-matrix flexible power distribution system according to any one of claims 1 to 9, characterized in that: The input end of each switch is provided with a semiconductor switch, which is connected with the switch state judging module circuit, and is used for cutting off the power supply of the input end of the corresponding switch according to the output signal of the switch state judging module when the corresponding switch is determined to have a sticking fault or poor contact.

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