Reverse blocking switch assembly, control method, control device and storage medium

Abstract

The present invention provides a reverse blocking switch component, a control method, a control device and a storage medium. The reverse blocking switch component includes: a control unit; a first switch unit and a second switch unit connected in reverse series, and the controlled poles of the first switch unit and the second switch unit are both connected to the control unit; a detection unit connected to the control unit, the detection unit is suitable for detecting the electrical signals of the first switch unit and the second switch unit, and the control unit is configured to send a switch drive signal to the first switch unit and the second switch unit according to the desired current flow direction and the electrical signal. The technical solution provided by the present application, the bidirectional switch constructed by the first switch unit and the second switch unit connected in reverse series can prevent the phenomenon of current backflow, so that the current flow direction is limited to a single direction like a diode, thereby reducing the reverse recovery loss or improving the conversion efficiency.

Description

Technical Field

[0001] The present invention relates to the field of switch control circuits, and in particular to a reverse blocking switch component, a control method for a reverse blocking switch component, a control device for a reverse blocking switch component, and a computer-readable storage medium. Background Art

[0002] In the related art, the reverse blocking switch includes at least the following two structures. The first is a structure in which a diode is connected in series with the switch tube, which generates recovery loss during operation. The second is a reverse blocking IGBT (insulated gate bipolar transistor). The reverse blocking IGBT has a saturation voltage of 2V between the collector and the emitter, so the conversion efficiency is also poor. Summary of the invention

[0003] In order to solve at least one of the above technical problems, an object of the present invention is to provide a reverse blocking switch assembly.

[0004] An object of the present invention is to provide a control method, a control device and a storage medium for a reverse blocking switch assembly.

[0005] According to the technical solution of the first aspect of the present invention, a reverse blocking switch component is proposed, comprising: a control unit; a first switch unit and a second switch unit connected in reverse series, wherein the controlled poles of the first switch unit and the second switch unit are both connected to the control unit; a detection unit connected to the control unit, wherein the detection unit is suitable for detecting electrical signals of the first switch unit and the second switch unit, and the control unit is configured to send a switch drive signal to the first switch unit and the second switch unit according to the desired current flow direction and the electrical signal.

[0006] In this technical solution, the reverse blocking switch component includes a control unit, a first switch unit and a second switch unit connected in series, and a detection unit. The detection unit is suitable for detecting the electrical signals of the first switch unit and the second switch unit. The control unit receives the electrical signals and sends a switch drive signal to the first switch unit and / or the second switch unit based on the electrical signals and the expected current flow direction, so that the first switch unit and the second switch unit are opened and closed according to the switch drive signal, so that the current direction at both ends of the first switch unit and the second switch unit is the same as the expected current flow direction. The reverse blocking switch component constructed by the above components, when generating a potential difference in different directions, the bidirectional switch constructed by the first switch unit and the second switch unit connected in reverse series can prevent the current from flowing back, so that the current flow direction is limited to a single direction like a diode, thereby reducing the reverse recovery loss or improving the conversion efficiency compared with the reverse blocking switch in the related art.

[0007] In addition, the reverse blocking switch assembly in the above embodiment provided by the present invention may also have the following additional technical features:

[0008] In the above technical solution, the first switch unit includes a first power switch tube, the first power switch tube has a reverse-parallel diode or the first switch unit also includes a first diode reverse-parallel to the first power switch tube; the second switch unit includes a second power switch tube, the second power switch tube has a reverse-parallel diode or the second switch unit also includes a second diode reverse-parallel to the second power switch tube, the first power switch tube and the second power switch tube are also provided with a first electrode and a second electrode, and the first electrode is suitable for connecting to the substrate inside the switch tube.

[0009] Among them, the power switch tube can be an IGBT (Insulated Gate Bipolar Transistor), a triode or a MOS tube (Metal-Oxide-Semiconductor Field-Effect Transistor, MOSFET). If the power switch tube is a triode, the controlled electrode is the base, the first electrode is the emitter, and the second electrode is the collector. If the power switch tube is a MOS tube, the controlled electrode is the gate, the first electrode is the source, and the second electrode is the drain.

[0010] MOS tubes also include Sic MOS tubes and GaN MOS tubes.

[0011] In this technical solution, the switch unit is constructed by adopting a reverse-parallel diode, which can control the shutdown of the power switch tube while ensuring that the current does not flow through the diode. Compared with the solution in the related art in which a single power switch tube and a single diode are reverse-parallel connected to form a reverse blocking switch, since no current flows through the diode, it is beneficial to reduce the reverse recovery loss.

[0012] In the above technical solution, the detection unit includes a current detection module, which can specifically be a current sensor, and the electrical signal includes the current direction between the first switch unit and the second switch unit. One end of the current detection module is connected to the common connection end of the first switch unit and the second switch unit, and the other end of the current detection module is connected to the control unit. The current detection module is suitable for detecting the current direction between the first switch unit and the second switch unit, wherein the control unit is suitable for generating a corresponding switch drive signal according to the current direction and the expected current flow direction.

[0013] The common connection end of the first switch unit and the second switch unit is specifically the common connection end between the first power switch tube and the second power switch tube.

[0014] In this technical solution, the detection unit can be a current detection module, which determines the current direction as an electrical signal by detecting the current flow direction between the first switch unit and the second switch unit, so that the control unit determines the switching strategy for the first power switch tube and the second power switch tube according to whether the current direction is consistent with the expected current flow direction, so that when the current direction is consistent with the expected current flow direction, the first power switch tube and the second power switch tube are both turned on, and when the current direction is inconsistent with the expected current flow direction, it is ensured that one of the power switch tubes is in the off state, and the diode reversely connected in parallel with the power switch tube is in the cut-off state at this time, so as to realize the reverse blocking function.

[0015] Specifically, the second electrode of the first power switch tube is connected to the second electrode of the second power switch tube, and the expected current flow direction is from the first switch unit to the second switch unit, and the second power switch tube is controlled to be in the on state; and if it is detected that the current direction is from the first power switch tube to the second power switch tube, the first power switch tube is controlled to be turned on; if it is detected that the current direction is from the second power switch tube to the first power switch tube, the first power switch tube is controlled to be turned off.

[0016] If the first electrode of the first power switch tube is connected to the first electrode of the second power switch tube, and the expected current flow direction is from the second switch unit to the first switch unit, the second power switch tube is controlled to be in the on state; if the current direction is detected from the second power switch tube to the first power switch tube, the first power switch tube is controlled to be turned on; if the current direction is detected from the first power switch tube to the second power switch tube, the first power switch tube is controlled to be turned off.

[0017] If the second electrode of the first power switch tube is connected to the second electrode of the second power switch tube, and the expected current flow direction is from the second switch unit to the first switch unit, the first power switch tube is controlled to be in the on state; and if the current direction is detected from the first power switch tube to the second power switch tube, the second power switch tube is controlled to be turned off; if the current direction is detected from the second power switch tube to the first power switch tube, the second power switch tube is controlled to be turned on.

[0018] If the first electrode of the first power switch tube is connected to the first electrode of the second power switch tube, and the expected current flow direction is from the first switch unit to the second switch unit, the first power switch tube is controlled to be in the on state; and if the current direction is detected from the first power switch tube to the second power switch tube, the second power switch tube is controlled to be turned on; if the current direction is detected from the second power switch tube to the first power switch tube, the second power switch tube is controlled to be turned off.

[0019] If it is bidirectional current mode, the above two control logics are combined and executed.

[0020] In any of the above technical solutions, the detection unit includes a comparator, the first switch unit includes a first power switch tube, and the second switch unit includes a second power switch tube. If the second electrode of the first power switch tube is connected to the second electrode of the second power switch tube, the comparator is respectively connected to the first electrode of the first power switch tube and the first electrode of the second power switch tube. The comparator is suitable for comparing the size between the first electrode voltage of the first power switch tube and the first electrode voltage of the second power switch tube, and sending the comparison result to the control unit, wherein the control unit is suitable for generating a corresponding switch drive signal according to the comparison result and the expected current flow direction.

[0021] Among them, those skilled in the art can understand that what the comparator sends to the control module is a voltage comparison result or a current comparison result of two electrical signals.

[0022] In this technical solution, as an implementation method of reverse series connection, the second electrode of the first power switch tube is connected to the second electrode of the second power switch tube, and the first electrode of the first power switch tube and the first electrode of the second power switch tube are respectively determined as two current input terminals.

[0023] Specifically, the detection unit is a comparator, which is respectively connected to the first electrode of the first power switch tube and the first electrode of the second power switch tube to compare the voltage of the first electrode of the first power switch tube with the voltage of the first electrode of the second power switch tube. The comparator transmits the comparison result to the control unit, and the control unit can determine whether the current direction is consistent with the expected current direction based on the comparison result, and then send a switch drive signal to the first power switch tube and the second power switch tube to make the first power switch tube and the second power switch tube conductive when they are consistent.

[0024] If the expected current flow direction is from the first power switch tube to the second power switch tube, the second power switch tube remains in a continuously turned-on state, and the comparator detects that the voltage of the first power switch tube is greater than the voltage of the second power switch tube, then the first power switch tube is controlled to be turned on; if the comparator detects that the voltage of the first power switch tube is less than the voltage of the second power switch tube, then the first power switch tube is controlled to be turned off to prevent current backflow.

[0025] Or if the expected current flow direction is from the first power switch tube to the second power switch tube, and the comparator detects that the voltage of the first power switch tube is greater than the voltage of the second power switch tube, the first power switch tube and the second power switch tube are controlled according to the specified control strategy; if the comparator detects that the voltage of the first power switch tube is less than the voltage of the second power switch tube, the first power switch tube and the second power switch tube are controlled to be turned off.

[0026] Based on the above logic, a bidirectional switch function is realized.

[0027] Controlling the first power switch tube and the second power switch tube according to the specified control strategy may include controlling to turn on the first power switch tube and the second power switch tube when it is detected that the current direction is consistent with the expected current flow direction.

[0028] Controlling to turn off the first power switch tube and the second power switch tube may specifically be directly turning off the control unit.

[0029] If the expected current flow direction is from the second power switch tube to the first power switch tube, the first power switch tube remains in a continuous conduction state, and the comparator detects that the voltage of the first power switch tube is less than the voltage of the second power switch tube, then the second power switch tube is controlled to be turned on; if the comparator detects that the voltage of the first power switch tube is greater than the voltage of the second power switch tube, then the second power switch tube is controlled to be turned off to prevent current backflow.

[0030] Or the expected current flow direction is from the second power switch tube to the first power switch tube, and the comparator detects that the voltage of the first power switch tube is less than the voltage of the second power switch tube, then the first power switch tube and the second power switch tube are controlled according to the specified control strategy; if the comparator detects that the voltage of the first power switch tube is greater than the voltage of the second power switch tube, then the first power switch tube and the second power switch tube are controlled to be turned off.

[0031] In any of the above technical solutions, if the first electrode of the first power switch tube is connected to the first electrode of the second power switch tube, the comparator is respectively connected to the second electrode of the first power switch tube and the second electrode of the second power switch tube, the comparator is suitable for comparing the voltage of the second electrode of the first power switch tube with the voltage of the second electrode of the second power switch tube, and the comparator is also connected to the control unit to send the comparison result to the control unit, wherein the control unit is suitable for generating a corresponding switch drive signal according to the comparison result and the expected current flow direction.

[0032] In this technical solution, as another implementation method of reverse series connection, the first electrode of the first power switch tube is connected to the first electrode of the second power switch tube, and the second electrode of the first power switch tube and the second electrode of the second power switch tube are respectively determined as two current input terminals.

[0033] At this time, the comparator enables the control unit to determine the switch control strategy by comparing the second electrode voltage of the first power switch tube with the second electrode voltage of the second power switch tube.

[0034] In any of the above technical solutions, the detection unit includes a voltage detection module, which can specifically be a voltage sensor. The first switch unit includes a first power switch tube, and the second switch unit includes a second power switch tube. If the second electrode of the first power switch tube is connected to the second electrode of the second power switch tube, the voltage detection module is respectively connected to the first electrode of the first power switch tube and the first electrode of the second power switch tube. The voltage detection module is suitable for collecting the first voltage of the first electrode of the first power switch tube and the second voltage of the first electrode of the second power switch tube, and sending the first voltage and the second voltage to the control unit, wherein the control unit is suitable for generating a corresponding switch drive signal according to the first voltage, the second voltage and the expected current flow direction.

[0035] In this technical solution, as an implementation method of reverse series connection, the second electrode of the first power switch tube is connected to the second electrode of the second power switch tube, and the first electrode of the first power switch tube and the first electrode of the second power switch tube are respectively determined as two current input terminals.

[0036] Specifically, the detection unit is a voltage detection module, which is suitable for being connected to the first electrode of the first power switch tube and the first electrode of the second power switch tube respectively to detect the first voltage of the first power switch tube and the second voltage of the second power switch tube. The voltage detection module can send the first voltage and the second voltage to the control unit, and the control unit can determine the voltage drop direction between the first power switch tube and the second power switch tube according to the values ​​of the first voltage and the second voltage, so as to determine the current direction based on the voltage drop direction, and then detect whether the current current direction is consistent with the expected current flow direction, and send a switch drive signal to the first power switch tube and the second power switch tube according to the detection result, so as to make the first power switch tube and the second power switch tube conductive when they are consistent.

[0037] If the expected current flow direction is from the first power switch tube to the second power switch tube, the second power switch tube remains in a continuously turned-on state. According to the detection result of the voltage detection module, it is determined that the first voltage is greater than the second voltage, and the first power switch tube is controlled to be turned on. If according to the detection result of the voltage detection module, it is determined that the first voltage is less than the second voltage, the first power switch tube is controlled to be turned off to prevent the current backflow phenomenon.

[0038] Or if the expected current flow direction is from the first power switch tube to the second power switch tube, and it is determined according to the detection result of the voltage detection module that the first voltage is greater than the second voltage, the first power switch tube and the second power switch tube are controlled according to the specified control strategy; if it is determined according to the detection result of the voltage detection module that the first voltage is less than the second voltage, the first power switch tube and the second power switch tube are controlled to be turned off to prevent the current backflow phenomenon.

[0039] If the expected current flow direction is from the second power switch tube to the first power switch tube, the first power switch tube remains in a continuously turned-on state. According to the detection result of the voltage detection module, it is determined that the first voltage is greater than the second voltage, and the second power switch tube is controlled to be turned on. If according to the detection result of the voltage detection module, it is determined that the first voltage is greater than the second voltage, the second power switch tube is controlled to be turned off to prevent the current backflow phenomenon.

[0040] Or if the expected current flow direction is from the second power switch tube to the first power switch tube, and it is determined according to the detection result of the voltage detection module that the first voltage is greater than the second voltage, the first power switch tube and the second power switch tube are controlled according to the specified control strategy; if it is determined according to the detection result of the voltage detection module that the first voltage is greater than the second voltage, the first power switch tube and the second power switch tube are controlled to be turned off to prevent the current backflow phenomenon.

[0041] In any of the above technical solutions, if the first electrode of the first power switch tube is connected to the first electrode of the second power switch tube, the voltage detection module is respectively connected to the second electrode of the first power switch tube and the second electrode of the second power switch tube, and the voltage detection module is suitable for collecting the third voltage of the second electrode of the first power switch tube and the fourth voltage of the second electrode of the second power switch tube, and sending the third voltage and the fourth voltage to the control unit, wherein the control unit is suitable for generating a corresponding switch drive signal according to the third voltage, the fourth voltage and the expected current flow direction.

[0042] In this technical solution, as another implementation method of reverse series connection, the first electrode of the first power switch tube is connected to the first electrode of the second power switch tube, and the second electrode of the first power switch tube and the second electrode of the second power switch tube are respectively determined as two current input terminals.

[0043] At this time, the voltage detection module enables the control unit to determine the switch control strategy by detecting the voltage of the second electrode of the first power switch tube and the voltage of the second electrode of the second power switch tube.

[0044] In any of the above technical solutions, the control unit includes: a controller; a driver, the input end of the driver is connected to the controller, and the driver is suitable for being configured to be in an enabled state to drive the first switch unit and / or the second switch unit to open and close.

[0045] In this technical solution, the control unit may include a controller and a driver, the controller is suitable for enabling the driver, and both the controller and the driver can realize the on-off control of the switch unit.

[0046] In any of the above technical solutions, the detection unit is suitable for being connected to the controller, and the controller is suitable for configuring the driver to be in a continuously enabled state.

[0047] In this technical solution, if the detection unit is connected to the controller, the controller enables the driver all the time, and the controller can control the opening and closing of the first power switch tube and the second power switch tube according to the detection result of the electrical signal output by the detection unit.

[0048] In any of the above technical solutions, the detection unit is suitable for being connected to the driver, and the driver is suitable for being configured to an enabled state by an electrical signal.

[0049] In this technical solution, if the detection unit is connected to the driver, the driver is enabled directly by the electrical signal.

[0050] According to the technical solution of the second aspect of the present invention, a control method for a reverse blocking switch component is proposed, including: detecting electrical signals of a first switch unit and a second switch unit; configuring switch drive signals of the first switch unit and the second switch unit according to the desired current flow direction and the detection results of the electrical signals.

[0051] In this technical solution, a switch drive signal is sent to the first switch unit and / or the second switch unit according to the electrical signals of the first switch unit and the second switch unit and the expected current flow direction, so that the first switch unit and the second switch unit are opened and closed according to the switch drive signal, so that the current direction at both ends of the first switch unit and the second switch unit is the same as the expected current flow direction. The reverse blocking switch assembly constructed by the above components, when generating potential differences in different directions, the bidirectional switch constructed by the first switch unit and the second switch unit connected in reverse series can prevent the current from flowing back, so that the current flow direction is limited to a single direction like a diode, thereby reducing the reverse recovery loss or improving the conversion efficiency compared with the reverse blocking switch in the related art.

[0052] In the above technical solution, the first switch unit includes a first power switch tube, the first power switch tube has a reverse-parallel diode or the first switch unit also includes a first diode reverse-parallel to the first power switch tube; the second switch unit includes a second power switch tube, the second power switch tube has a reverse-parallel diode or the second switch unit also includes a second diode reverse-parallel to the second power switch tube, the first power switch tube and the second power switch tube are also provided with a first electrode and a second electrode, and the first electrode is suitable for connecting to the substrate inside the switch tube.

[0053] Among them, the power switch tube can be an IGBT (Insulated Gate Bipolar Transistor), a triode or a MOS tube (Metal-Oxide-Semiconductor Field-Effect Transistor, MOSFET). If the power switch tube is a triode, the controlled electrode is the base, the first electrode is the emitter, and the second electrode is the collector. If the power switch tube is a MOS tube, the controlled electrode is the gate, the first electrode is the source, and the second electrode is the drain.

[0054] MOS tubes also include Sic MOS tubes and GaN MOS tubes.

[0055] In any of the above technical solutions, detecting the electrical signals of the first switch unit and the second switch unit specifically includes: determining the current direction between the first power switch tube and the second power switch tube according to the current signals of the first power switch tube and the second power switch tube, and determining the current direction as the electrical signal.

[0056] In this technical solution, by detecting the current flow direction between the first switch unit and the second switch unit, the current direction is determined as an electrical signal, so that the control unit determines the switching strategy for the first power switch tube and the second power switch tube according to whether the current direction is consistent with the expected current flow direction, so that when the current direction is consistent with the expected current flow direction, the first power switch tube and the second power switch tube are both turned on, and when the current direction is inconsistent with the expected current flow direction, it is ensured that one of the power switch tubes is in the off state, and at this time, the diode reversely connected in parallel with the power switch tube is in the cut-off state, so as to realize the reverse blocking function.

[0057] In any of the above technical solutions, the switch drive signals of the first switch unit and the second switch unit are configured according to the expected current flow direction and the detection results of the electrical signal, specifically including: the second electrode of the first power switch tube is connected to the second electrode of the second power switch tube, the expected current flow direction is from the first switch unit to the second switch unit, and the second power switch tube is controlled to be in a conductive state; and if it is detected that the current direction is from the first power switch tube to the second power switch tube, the first power switch tube is controlled to be turned on; if it is detected that the current direction is from the second power switch tube to the first power switch tube, the first power switch tube is controlled to be turned off.

[0058] In any of the above technical solutions, the switch drive signals of the first switch unit and the second switch unit are configured according to the detection results of the expected current flow direction and the electrical signal, specifically including: the first electrode of the first power switch tube is connected to the first electrode of the second power switch tube, the expected current flow direction is from the second switch unit to the first switch unit, and the second power switch tube is controlled to be in a conducting state; if the current direction is detected from the second power switch tube to the first power switch tube, the first power switch tube is controlled to be turned on; if the current direction is detected from the first power switch tube to the second power switch tube, the first power switch tube is controlled to be turned off.

[0059] In any of the above technical solutions, the switch drive signals of the first switch unit and the second switch unit are configured according to the detection results of the expected current flow direction and the electrical signal, specifically including: the second electrode of the first power switch tube is connected to the second electrode of the second power switch tube, and the expected current flow direction is from the second switch unit to the first switch unit, then the first power switch tube is controlled to be in the on state; and if it is detected that the current direction is from the first power switch tube to the second power switch tube, the second power switch tube is controlled to be turned off; if it is detected that the current direction is from the second power switch tube to the first power switch tube, then the second power switch tube is controlled to be turned on.

[0060] In any of the above technical solutions, the switch drive signals of the first switch unit and the second switch unit are configured according to the expected current flow direction and the detection result of the electrical signal, specifically including: the first electrode of the first power switch tube is connected to the first electrode of the second power switch tube, and the expected current flow direction is from the first switch unit to the second switch unit, then the first power switch tube is controlled to be in the on state; and if it is detected that the current direction is from the first power switch tube to the second power switch tube, the second power switch tube is controlled to be turned on; if it is detected that the current direction is from the second power switch tube to the first power switch tube, then the second power switch tube is controlled to be turned off.

[0061] In this technical solution, if the actual current direction is the same as the expected current direction, the first power switch tube and the second power switch tube are controlled to be turned on. If the actual current direction is opposite to the expected current direction, one of them is controlled to be turned off to achieve reliable reverse blocking and improve conversion efficiency.

[0062] Among them, a power switch tube is controlled to be in the on state all the time, so that the current direction is determined by detecting the current signal.

[0063] In any of the above technical solutions, detecting the electrical signals of the first switch unit and the second switch unit specifically includes: if the second electrode of the first power switch tube is connected to the second electrode of the second power switch tube, the electrical signal includes a first voltage and a second voltage, the first voltage is the voltage of the first electrode of the first power switch tube, and the second voltage is the voltage of the first electrode of the second power switch tube.

[0064] In any of the above technical solutions, the switch drive signals of the first switch unit and the second switch unit are configured according to the expected current flow direction and the detection results of the electrical signal, specifically including: the expected current flow direction is from the first switch unit to the second switch unit, if the first voltage is greater than the second voltage, the first power switch tube and the second power switch tube are controlled to open and close according to the specified control strategy; if the first voltage is less than or equal to the second voltage, the first power switch tube and the second power switch tube are configured to be in a closed state.

[0065] In any of the above technical solutions, it also includes: the expected current flow direction is from the second switch unit to the first switch unit. If the second voltage is greater than the first voltage, the first power switch tube and the second power switch tube are controlled to open and close according to a specified control strategy; if the second voltage is less than or equal to the first voltage, the first power switch tube and the second power switch tube are configured to be in a closed state.

[0066] In this technical solution, the current direction when the switch component is turned on is determined by comparing the first voltage with the second voltage to detect whether the current direction is consistent with the expected current flow direction. If they are consistent, it is turned on; if they are inconsistent, it is turned off to achieve reverse blocking. The specified control strategy can be to control the first power switch tube and the second power switch tube to be turned on when they need to be turned on.

[0067] Configuring the first power switch tube and the second power switch tube to be in a closed state may directly stop sending the switch driving signal to the first power switch tube and the second power switch tube.

[0068] In any of the above technical solutions, detecting the electrical signals of the first switch unit and the second switch unit specifically includes: if the first electrode of the first power switch tube is connected to the first electrode of the second power switch tube, the electrical signal includes a third voltage and a fourth voltage, the third voltage is the voltage of the second electrode of the first power switch tube, and the fourth voltage is the voltage of the second electrode of the second power switch tube.

[0069] In any of the above technical solutions, the switch drive signals of the first switch unit and the second switch unit are configured according to the expected current flow direction and the detection results of the electrical signal, specifically including: the expected current flow direction is from the first switch unit to the second switch unit, if the third voltage is greater than the fourth voltage, the first power switch tube and the second power switch tube are controlled to open and close according to the specified control strategy; if the third voltage is less than or equal to the fourth voltage, the first power switch tube and the second power switch tube are configured to be in a closed state.

[0070] In any of the above technical solutions, it also includes: the expected current flow direction is from the second switch unit to the first switch unit. If the fourth voltage is greater than the third voltage, the first power switch tube and the second power switch tube are controlled to open and close according to a specified control strategy; if the fourth voltage is less than or equal to the third voltage, the first power switch tube and the second power switch tube are configured to be in a closed state.

[0071] In this technical solution, by comparing the third voltage with the fourth voltage, the current direction when the switch component is turned on is determined to detect whether the current direction is consistent with the expected current flow direction. If they are consistent, it is turned on; if they are inconsistent, it is turned off to achieve reverse blocking, wherein the specified control strategy can be to control the first power switch tube and the second power switch tube to be turned on when they need to be turned on.

[0072] Configuring the first power switch tube and the second power switch tube to be in a closed state may directly stop sending the switch driving signal to the first power switch tube and the second power switch tube.

[0073] In any of the above technical solutions, the reverse blocking switch component also includes a driver, which is suitable for driving the first switch unit and / or the second switch unit to open and close, and configuring the switch drive signals of the first switch unit and the second switch unit according to the desired current direction and the detection result of the electrical signal. Specifically, it also includes: if the driver directly receives the electrical signal and / or the detection result of the electrical signal, the driver is suitable for determining whether it is enabled according to the electrical signal; if the driver does not directly receive the electrical signal and / or the detection result of the electrical signal, the driver is configured to be in a continuously enabled state.

[0074] In this technical solution, the first power switch tube and the second power switch tube can be directly controlled to open and close by the switch control signal output by the controller, or can be controlled to open and close by the switch drive signal output by the control driver.

[0075] Among them, the detection unit is suitable for detecting electrical signals. If the detection unit is connected to the controller, the controller enables the driver all the time. The controller can control the opening and closing of the first power switch tube and the second power switch tube according to the detection result of the electrical signal output by the detection unit.

[0076] If the detection unit is connected to the driver, the driver is enabled directly by the electrical signal.

[0077] The switch driving signal may specifically be a PWM (Pulse Width Modulation) signal.

[0078] In any of the above technical solutions, the first switch unit further includes a first diode connected in reverse parallel to the first power switch tube, and the second switch unit further includes a second diode connected in reverse parallel to the second power switch tube.

[0079] According to the technical solution of the third aspect of the present application, a control device for a reverse blocking switch component is provided, comprising: a memory and a processor; the memory is used to store program code; the processor is used to execute the steps of the operation control method of the reverse blocking switch component defined in any one of the technical solutions of the second aspect of the present application.

[0080] According to the technical solution of the fourth aspect of the present application, a reverse blocking switch assembly is provided, comprising: a control device of the reverse blocking switch assembly as defined in any one of the technical solutions of the third aspect above.

[0081] According to the technical solution of the fifth aspect of the present application, a computer-readable storage medium is provided, on which a computer program is stored. When the computer program is executed by a processor, the steps of the operation control method as described in any one of the technical solutions of the second aspect are implemented.

[0082] Additional aspects and advantages of the present invention will become apparent from the following description or may be learned by practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0083] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0084] Figure 1 A circuit diagram of a reverse blocking switch assembly according to an embodiment of the present invention is shown;

[0085] Figure 2 A circuit diagram of a reverse blocking switch assembly according to another embodiment of the present invention is shown;

[0086] Figure 3 A circuit diagram of a reverse blocking switch assembly according to yet another embodiment of the present invention is shown;

[0087] Figure 4 A circuit diagram of a reverse blocking switch assembly according to another embodiment of the present invention is shown;

[0088] Figure 5 A circuit diagram of a reverse blocking switch assembly according to another embodiment of the present invention is shown;

[0089] Figure 6 A circuit diagram of a reverse blocking switch assembly according to another embodiment of the present invention is shown;

[0090] Figure 7 A circuit diagram of a reverse blocking switch assembly according to another embodiment of the present invention is shown;

[0091] Figure 8A circuit diagram of a reverse blocking switch assembly according to another embodiment of the present invention is shown;

[0092] Fig. 9 A circuit diagram of a reverse blocking switch assembly according to another embodiment of the present invention is shown;

[0093] Fig.10 A schematic flow chart showing a method for controlling a reverse blocking switch assembly according to an embodiment of the present invention is shown;

[0094] Fig.11 A schematic flow chart showing a method for controlling a reverse blocking switch assembly according to another embodiment of the present invention is shown;

[0095] Fig.12 A schematic flow chart showing a method for controlling a reverse blocking switch assembly according to yet another embodiment of the present invention is shown;

[0096] Fig.13 A schematic flow chart showing a method for controlling a reverse blocking switch assembly according to yet another embodiment of the present invention is shown;

[0097] Fig.14 A schematic flow chart showing a method for controlling a reverse blocking switch assembly according to yet another embodiment of the present invention is shown;

[0098] Fig.15 A schematic flow chart showing a method for controlling a reverse blocking switch assembly according to yet another embodiment of the present invention is shown;

[0099] Fig.16 A schematic flow chart showing a method for controlling a reverse blocking switch assembly according to yet another embodiment of the present invention is shown;

[0100] Fig.17 A schematic flow chart showing a method for controlling a reverse blocking switch assembly according to yet another embodiment of the present invention is shown;

[0101] Fig.18 A schematic flow chart showing a method for controlling a reverse blocking switch assembly according to yet another embodiment of the present invention is shown;

[0102] Fig.19 A schematic flow chart showing a method for controlling a reverse blocking switch assembly according to yet another embodiment of the present invention is shown;

[0103] Fig. 20 A schematic flow chart showing a method for controlling a reverse blocking switch assembly according to yet another embodiment of the present invention is shown;

[0104] Fig.21 A schematic flow chart showing a method for controlling a reverse blocking switch assembly according to yet another embodiment of the present invention is shown;

[0105] Fig. 22 A schematic block diagram of a control device for a reverse blocking switch assembly according to yet another embodiment of the present invention is shown. DETAILED DESCRIPTION

[0106] In order to more clearly understand the above-mentioned purpose, features and advantages of the present invention, the present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be noted that the embodiments of the present application and the features in the embodiments can be combined with each other without conflict.

[0107] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the protection scope of the present invention is not limited to the specific embodiments disclosed below.

[0108] Refer to the following Figures 1 to 22 Some embodiments of the reverse blocking switch assembly and the control method thereof according to the present invention are described.

[0109] like Figure 1 As shown, the reverse blocking switch component according to an embodiment of the present invention includes: a control unit 10; a first switch unit Q1 and a second switch unit Q2 connected in reverse series, and the controlled poles of the first switch unit Q1 and the second switch unit Q2 are both connected to the control unit 10; a detection unit 20, which is connected to the control unit 10, and the detection unit 20 is suitable for detecting the electrical signals of the first switch unit Q1 and the second switch unit Q2, and the control unit 10 is configured to send a switch drive signal to the first switch unit Q1 and the second switch unit Q2 according to the desired current flow direction and the electrical signal.

[0110] In this embodiment, the reverse blocking switch component includes a control unit 10, a first switch unit Q1 and a second switch unit Q2 connected in series, and a detection unit 20. The detection unit 20 is suitable for detecting electrical signals of the first switch unit Q1 and the second switch unit Q2. The control unit 10 receives the electrical signals and sends a switch drive signal to the first switch unit Q1 and / or the second switch unit Q2 based on the electrical signals and the expected current flow direction, so that the first switch unit Q1 and the second switch unit Q2 are opened and closed according to the switch drive signal, so that the current direction at both ends of the first switch unit Q1 and the second switch unit Q2 is the same as the expected current flow direction. The reverse blocking switch component constructed by the above components, when generating a potential difference in different directions, the bidirectional switch constructed by the first switch unit Q1 and the second switch unit Q2 connected in series in reverse can prevent the phenomenon of current backflow, so that the current flow direction is limited to a single direction like a diode, thereby reducing the reverse recovery loss or improving the conversion efficiency compared with the reverse blocking switch in the related art.

[0111] For example, if the desired current flow direction is from A to B, the second switch unit Q2 is controlled to be continuously turned on, and the turn-on strategy of the first switch unit Q1 is determined according to the relationship between the electrical signal and the desired current flow direction.

[0112] In the above embodiment, the first switch unit includes a first power switch tube, the first power switch tube has a reverse-parallel diode or the first switch unit also includes a first diode reverse-parallel to the first power switch tube; the second switch unit includes a second power switch tube, the second power switch tube has a reverse-parallel diode or the second switch unit also includes a second diode reverse-parallel to the second power switch tube, the first power switch tube and the second power switch tube are also provided with a first electrode and a second electrode, and the first electrode is suitable for connecting to the substrate inside the switch tube.

[0113] Among them, the power switch tube can be an IGBT (Insulated Gate Bipolar Transistor), a triode or a MOS tube (Metal-Oxide-Semiconductor Field-Effect Transistor, MOSFET). If the power switch tube is a triode, the controlled electrode is the base, the first electrode is the emitter, and the second electrode is the collector. If the power switch tube is a MOS tube, the controlled electrode is the gate, the first electrode is the source, and the second electrode is the drain.

[0114] MOS tubes also include Sic MOS tubes and GaN MOS tubes.

[0115] Among them, those skilled in the art can also understand that, according to different types of power switch tubes, the attached Figure 1 To Attachment Fig. 9 The first diode D1 and the second diode D2 in the circuit can be diodes provided by the power switch tube or external diodes.

[0116] In this embodiment, by adopting the reverse parallel diode to construct the switch unit, the power switch tube is controlled to be turned off while ensuring that the current does not flow through the diode. Compared with the solution in the related art that a single power switch tube and a single diode are reversely connected in parallel to form a reverse blocking switch, since no current flows through the diode, it is beneficial to reduce the reverse recovery loss. According to the control method of the reverse blocking switch component of the embodiment of the present invention, the method includes: detecting the electrical signals of the first switch unit and the second switch unit; and configuring the switch drive signals of the first switch unit and the second switch unit according to the desired current flow direction and the detection result of the electrical signal.

[0117] In this embodiment, a switch drive signal is sent to the first switch unit and / or the second switch unit according to the electrical signals of the first switch unit and the second switch unit and the expected current flow direction, so that the first switch unit and the second switch unit are opened and closed according to the switch drive signal, so that the current direction at both ends of the first switch unit and the second switch unit is the same as the expected current flow direction. The reverse blocking switch assembly constructed by the above components can prevent the current backflow phenomenon from occurring when a potential difference in different directions is generated by the reverse series connection of the first switch unit and the second switch unit, so that the current flow direction is limited to a single direction like a diode, thereby reducing the reverse recovery loss or improving the conversion efficiency compared with the reverse blocking switch in the related art.

[0118] The reverse blocking switch assembly includes a controller, and the first power switch tube and the second power switch tube can be directly controlled to open and close by a switch control signal output by the controller.

[0119] Or the reverse blocking switch component includes a controller and a driver, the driver is suitable for driving the first switch unit and / or the second switch unit to open and close, and the switch drive signal of the first switch unit and the second switch unit is configured according to the detection result of the expected current direction and the electrical signal. Specifically, it also includes: generating a switch control signal and an enable signal according to the comparison result of the expected current direction and the electrical signal, the enable signal is suitable for enabling the driver to generate a corresponding switch drive signal according to the switch control signal, and the switch drive signal is suitable for driving the first switch unit and / or the second switch unit to open and close.

[0120] The controller outputs an enable signal to the driver to enable the driver, that is, the driver is in an activated state to drive the power switch tube to open and close.

[0121] The switch driving signal may specifically be a PWM (Pulse Width Modulation) signal.

[0122] Embodiment 1:

[0123] like Figure 2 As shown, the first switch unit includes a first power switch tube S1, and the first power switch tube S1 has a reverse-parallel diode D1, or the first switch unit includes the first power switch tube S1 and a first diode D1 reverse-parallel to the first power switch tube S1.

[0124] The second switch unit includes a second power switch tube S2, and the second power switch tube S2 has a diode D2 connected in reverse parallel, or the second switch unit includes the second power switch tube S2 and a second diode D2 connected in reverse parallel to the second power switch tube S2.

[0125] The first power switch tube and the second power switch tube are further provided with a first electrode (electrode with arrows in the figure) and a second electrode, the first electrode is an emitter or source, and the second electrode is a collector or drain.

[0126] like Figure 2 As shown, the detection unit 20 includes a current detection module 202, the electrical signal includes the current direction between the first switch unit Q1 and the second switch unit, one end of the current detection module 202 is connected to the common connection end of the first switch unit Q1 and the second switch unit Q2, and the other end of the current detection module 202 is connected to the control unit 10, and the current detection module 202 is suitable for detecting the current direction between the first switch unit Q1 and the second switch unit Q2, wherein the control unit 10 is suitable for generating a corresponding switch drive signal according to the current direction and the expected current flow direction.

[0127] The second electrode of the first power switch tube S1 is connected to the second electrode of the second power switch tube S2 to serve as a common connection terminal.

[0128] In this embodiment, the control unit 10 may include a controller 102 and a driver 104 , and both the controller 102 and the driver 104 can realize the on-off control of the switch unit.

[0129] like Figure 2 As shown, the current detection module 202 is adapted to be connected to the controller 102 , and the controller 102 is adapted to configure the driver 104 to be in a continuously enabled state.

[0130] In this embodiment, the controller enables the driver all the time, and the controller can control the opening and closing of the first power switch tube and the second power switch tube according to the detection result of the electrical signal output by the detection unit.

[0131] In this embodiment, the current direction is determined as an electrical signal by detecting the current flow direction between the first switch unit Q1 and the second switch unit Q2, so that the control unit 10 determines the switching strategy for the first power switch tube S1 and the second power switch tube S2 according to whether the current direction is consistent with the expected current flow direction, so that when the current direction is consistent with the expected current flow direction, the first power switch tube S1 and the second power switch tube S2 are both turned on, and when the current direction is inconsistent with the expected current flow direction, it is ensured that one of the power switch tubes is in the off state, and at this time, the diode reversely connected in parallel with the power switch tube is in the cut-off state, so as to realize the reverse blocking function.

[0132] Embodiment 2:

[0133] like Fig.10 As shown, a control method for the reverse blocking switch component described in the first embodiment includes:

[0134] Step S1002: determining the direction of the current between the first power switch tube and the second power switch tube according to the current signals of the first power switch tube and the second power switch tube, and determining the current direction as an electrical signal.

[0135] Step S1004: if the desired current flow direction is from the first switch unit to the second switch unit, the second power switch tube is controlled to be in a conducting state.

[0136] Step S1006: if it is detected that the current direction is from the first power switch tube to the second power switch tube, control to turn on the first power switch tube.

[0137] Step S1008: if it is detected that the current direction is from the second power switch tube to the first power switch tube, the first power switch tube is controlled to be turned off.

[0138] like Fig.11 As shown, another control method for the reverse blocking switch assembly described in the first embodiment includes:

[0139] Step S1102: determining the direction of the current between the first power switch tube and the second power switch tube according to the current signals of the first power switch tube and the second power switch tube, and determining the current direction as an electrical signal.

[0140] Step S1104: if the desired current flow direction is from the second switch unit to the first switch unit, the first power switch tube is controlled to be in a conducting state.

[0141] Step S1106: if it is detected that the current direction is from the first power switch tube to the second power switch tube, then control to turn off the second power switch tube.

[0142] Step S1108: if it is detected that the current direction is from the second power switch tube to the first power switch tube, the second power switch tube is controlled to be turned on.

[0143] If it is bidirectional current mode, then combined with Fig.10 and Fig.11 The control logic in is executed.

[0144] Embodiment three:

[0145] like Figure 3 As shown, the first switch unit includes a first power switch tube S1, and the first power switch tube S1 has a reverse-parallel diode D1, or the first switch unit includes the first power switch tube S1 and a first diode D1 reverse-parallel to the first power switch tube S1.

[0146] The second switch unit includes a second power switch tube S2, and the second power switch tube S2 has a diode D2 connected in reverse parallel, or the second switch unit includes the second power switch tube S2 and a second diode D2 connected in reverse parallel to the second power switch tube S2.

[0147] The first power switch tube and the second power switch tube are further provided with a first electrode (electrode with arrows in the figure) and a second electrode, the first electrode is an emitter or source, and the second electrode is a collector or drain.

[0148] like Figure 3 As shown, the detection unit 20 includes a current detection module 202, the electrical signal includes the current direction between the first switch unit Q1 and the second switch unit, one end of the current detection module 202 is connected to the common connection end of the first switch unit Q1 and the second switch unit Q2, and the other end of the current detection module 202 is connected to the control unit 10, and the current detection module 202 is suitable for detecting the current direction between the first switch unit Q1 and the second switch unit Q2, wherein the control unit 10 is suitable for generating a corresponding switch drive signal according to the current direction and the expected current flow direction.

[0149] The first electrode of the first power switch tube S1 is connected to the first electrode of the second power switch tube S2 to serve as a common connection terminal.

[0150] like Figure 3 As shown, the current detection module 202 is suitable for being connected to the controller 102, and the controller is suitable for configuring the driver to be in a continuously enabled state.

[0151] In this embodiment, the controller enables the driver all the time, and the controller can control the opening and closing of the first power switch tube and the second power switch tube according to the detection result of the electrical signal output by the detection unit.

[0152] Embodiment 4:

[0153] like Fig.12 As shown, a control method for the reverse blocking switch assembly described in the third embodiment includes:

[0154] Step S1202: determine the direction of the current between the first power switch tube and the second power switch tube according to the current signals of the first power switch tube and the second power switch tube, and determine the current direction as an electrical signal.

[0155] Step S1204: if the desired current flow direction is from the first switch unit to the second switch unit, the first power switch tube is controlled to be in the on state.

[0156] Step S1206: if it is detected that the current direction is from the first power switch tube to the second power switch tube, control the second power switch tube to be turned on.

[0157] Step S1208: if it is detected that the current direction is from the second power switch tube to the first power switch tube, the second power switch tube is controlled to be turned off.

[0158] like Fig.13 As shown, another control method for the reverse blocking switch assembly described in the third embodiment includes:

[0159] Step S1302: determine the direction of the current between the first power switch tube and the second power switch tube according to the current signals of the first power switch tube and the second power switch tube, and determine the current direction as an electrical signal.

[0160] Step S1304: if the desired current flow direction is from the second power switch tube to the first power switch tube, the second power switch tube is controlled to be in a conducting state.

[0161] Step S1306: if it is detected that the current direction is from the first power switch tube to the second power switch tube, then control to turn off the first power switch tube.

[0162] Step S1308: If it is detected that the current direction is from the second power switch tube to the first power switch tube, control the first power switch tube to be turned on.

[0163] In this embodiment, by detecting the current flow direction between the first switch unit and the second switch unit, the current direction is determined as an electrical signal, so that the control unit determines the switching strategy for the first power switch tube and the second power switch tube according to whether the current direction is consistent with the expected current flow direction, so that when the current direction is consistent with the expected current flow direction, both the first power switch tube and the second power switch tube are turned on, and when the current direction is inconsistent with the expected current flow direction, it is ensured that one of the power switch tubes is in the off state, and at this time, the diode reversely connected in parallel with the power switch tube is in the cut-off state, so as to realize the reverse blocking function.

[0164] If it is a bidirectional current mode, the above two control methods are combined and executed.

[0165] In this embodiment, if the actual current direction is the same as the expected current direction, the first power switch tube and the second power switch tube are controlled to be turned on. If the actual current direction is opposite to the expected current direction, one of them is controlled to be turned off to achieve reliable reverse blocking and improve conversion efficiency.

[0166] Among them, a power switch tube is controlled to be in the on state all the time, so that the current direction is determined by detecting the current signal.

[0167] Embodiment five:

[0168] like Figure 4 As shown, the first switch unit includes a first power switch tube S1, and the first power switch tube S1 has a reverse-parallel diode D1, or the first switch unit includes the first power switch tube S1 and a first diode D1 reverse-parallel to the first power switch tube S1.

[0169] The second switch unit includes a second power switch tube S2, and the second power switch tube S2 has a diode D2 connected in reverse parallel, or the second switch unit includes the second power switch tube S2 and a second diode D2 connected in reverse parallel to the second power switch tube S2.

[0170] The first power switch tube and the second power switch tube are further provided with a first electrode (electrode with arrows in the figure) and a second electrode, the first electrode is an emitter or source, and the second electrode is a collector or drain.

[0171] like Figure 4 As shown, the detection unit 20 includes a comparator 204, the second electrode of the first power switch tube S1 is connected to the second electrode of the second power switch tube S2, the comparator 204 is respectively connected to the first electrode of the first power switch tube S1 and the first electrode of the second power switch tube S2, the comparator 204 is suitable for comparing the voltage between the first electrode of the first power switch tube S1 and the voltage between the first electrode of the second power switch tube S2, and sending the comparison result to the control unit 10, wherein the control unit 10 is suitable for generating a corresponding switch drive signal according to the comparison result and the expected current flow direction.

[0172] like Figure 4 As shown, the comparator 204 is adapted to be connected to the driver 104, and the driver 104 is adapted to determine whether it is configured to be in an enabled state according to the electrical signal.

[0173] In this embodiment, if the detection unit is connected to the driver, the driver is enabled directly by the electrical signal.

[0174] In this embodiment, as an implementation method of reverse series connection, the second electrode of the first power switch tube S1 is connected to the second electrode of the second power switch tube S2, and the first electrode of the first power switch tube S1 and the first electrode of the second power switch tube S2 are respectively determined as two current input terminals.

[0175] Specifically, the comparator 204 is suitable for being connected to the first electrode of the first power switch tube S1 and the first electrode of the second power switch tube S2, respectively, to compare the voltage of the first power switch tube S1 with the voltage of the second power switch tube S2. The comparator 204 transmits the comparison result to the control unit 10. The control unit 10 can determine whether the current direction is consistent with the expected current direction based on the comparison result, and then send a switch drive signal to the first power switch tube S1 and the second power switch tube S2 to turn on the first power switch tube S1 and the second power switch tube S2 when they are consistent.

[0176] If the desired current flow direction is from the first power switch tube S1 to the second power switch tube S2, the second power switch tube S2 remains in a continuously turned-on state, and the comparator 204 detects that the voltage of the first power switch tube S1 is greater than the voltage of the second power switch tube S2, then the first power switch tube S1 is controlled to be turned on; if the comparator 204 detects that the voltage of the first power switch tube S1 is less than the voltage of the second power switch tube S2, then the first power switch tube S1 is controlled to be turned off to prevent the current backflow phenomenon.

[0177] If the desired current flow direction is from the second power switch tube S2 to the first power switch tube S1, the first power switch tube S1 remains in a continuously turned-on state, and the comparator 204 detects that the voltage of the first power switch tube S1 is less than the voltage of the second power switch tube S2, then the second power switch tube S2 is controlled to be turned on; if the comparator 204 detects that the voltage of the first power switch tube S1 is greater than the voltage of the second power switch tube S2, then the second power switch tube S2 is controlled to be turned off to prevent the current backflow phenomenon.

[0178] If it is bidirectional current mode, the above two control logics are combined.

[0179] Embodiment six:

[0180] like Figure 6 As shown, the first switch unit includes a first power switch tube S1, and the first power switch tube S1 has a reverse-parallel diode D1, or the first switch unit includes the first power switch tube S1 and a first diode D1 reverse-parallel to the first power switch tube S1.

[0181] The second switch unit includes a second power switch tube S2, and the second power switch tube S2 has a diode D2 connected in reverse parallel, or the second switch unit includes the second power switch tube S2 and a second diode D2 connected in reverse parallel to the second power switch tube S2.

[0182] The first power switch tube and the second power switch tube are further provided with a first electrode (electrode with arrows in the figure) and a second electrode, the first electrode is an emitter or source, and the second electrode is a collector or drain.

[0183] like Figure 6 As shown, the detection unit 20 includes a comparator 204, the second electrode of the first power switch tube S1 is connected to the second electrode of the second power switch tube S2, the comparator 204 is respectively connected to the first electrode of the first power switch tube S1 and the first electrode of the second power switch tube S2, the comparator 204 is suitable for comparing the voltage between the first power switch tube S1 and the voltage between the second power switch tube S2, and sending the comparison result to the control unit 10, wherein the control unit 10 is suitable for generating a corresponding switch drive signal according to the comparison result and the expected current flow direction.

[0184] like Figure 6 As shown, the comparator 204 is adapted to be connected to the controller 102 , and the controller 102 is adapted to configure the driver 104 to be in a continuously enabled state.

[0185] In this embodiment, if the detection unit is connected to the controller, the controller enables the driver all the time, and the controller can control the opening and closing of the first power switch tube and the second power switch tube according to the detection result of the electrical signal output by the detection unit.

[0186] In this embodiment, as an implementation method of reverse series connection, the second electrode of the first power switch tube S1 is connected to the second electrode of the second power switch tube S2, and the first electrode of the first power switch tube S1 and the first electrode of the second power switch tube S2 are respectively determined as two current input terminals.

[0187] Specifically, the detection unit 20 is a comparator 204, which is suitable for being connected to the first electrode of the first power switch tube S1 and the first electrode of the second power switch tube S2, respectively, to compare the voltage of the first power switch tube S1 with the voltage of the second power switch tube S2. The comparator 204 transmits the comparison result to the control unit 10. The control unit 10 can determine whether the current direction is consistent with the expected current flow direction based on the comparison result, and then send a switch drive signal to the first power switch tube S1 and the second power switch tube S2 to turn on the first power switch tube S1 and the second power switch tube S2 when they are consistent.

[0188] If the desired current flow direction is from the first power switch tube S1 to the second power switch tube S2, the second power switch tube S2 remains in a continuously turned-on state, and the comparator 204 detects that the voltage of the first power switch tube S1 is greater than the voltage of the second power switch tube S2, then the first power switch tube S1 is controlled to be turned on; if the comparator 204 detects that the voltage of the first power switch tube S1 is less than the voltage of the second power switch tube S2, then the first power switch tube S1 is controlled to be turned off to prevent the current backflow phenomenon.

[0189] If the desired current flow direction is from the second power switch tube S2 to the first power switch tube S1, the first power switch tube S1 remains in a continuously turned-on state, and the comparator 204 detects that the voltage of the first power switch tube S1 is less than the voltage of the second power switch tube S2, then the second power switch tube S2 is controlled to be turned on; if the comparator 204 detects that the voltage of the first power switch tube S1 is greater than the voltage of the second power switch tube S2, then the second power switch tube S2 is controlled to be turned off to prevent the current backflow phenomenon.

[0190] If it is bidirectional current mode, the above two control logics are combined.

[0191] Embodiment seven:

[0192] like Fig.14 As shown, a control method for the reverse blocking switch assembly described in the fifth and sixth embodiments includes:

[0193] Step S1402: the desired current flow direction is from the first switch unit to the second switch unit.

[0194] Step S1404: if the comparator detects that the first voltage is greater than the second voltage, the first power switch tube and the second power switch tube are controlled to be turned on and off according to a specified control strategy.

[0195] Step S1406: if the comparator detects that the first voltage is less than or equal to the second voltage, the first power switch tube and the second power switch tube are configured to be in a closed state.

[0196] like Fig.15 As shown, a control method for the reverse blocking switch assembly described in the fifth and sixth embodiments includes:

[0197] Step S1502: the desired current flow direction is from the second switch unit to the first switch unit.

[0198] Step S1504: if the comparator detects that the second voltage is greater than the first voltage, the first power switch tube and the second power switch tube are controlled to be turned on and off according to a specified control strategy.

[0199] Step S1506: if the comparator detects that the second voltage is less than or equal to the first voltage, the first power switch tube and the second power switch tube are configured to be in a closed state.

[0200] In this embodiment, the current direction when the switch component is turned on is determined by comparing the first voltage with the second voltage to detect whether the current direction is consistent with the expected current flow direction. If they are consistent, it is turned on; if they are inconsistent, it is turned off to achieve reverse blocking, wherein the specified control strategy can be to control the first power switch tube and the second power switch tube to be turned on when they need to be turned on.

[0201] Configuring the first power switch tube and the second power switch tube to be in a closed state may directly stop sending the switch driving signal to the first power switch tube and the second power switch tube.

[0202] Embodiment eight:

[0203] like Figure 5 As shown, the first electrode of the first power switch tube S1 is connected to the first electrode of the second power switch tube S2, and the comparator 204 is respectively connected to the second electrode of the first power switch tube S1 and the second electrode of the second power switch tube S2. The comparator 204 is suitable for comparing the magnitude between the second electrode voltage of the first power switch tube S1 and the second electrode voltage of the second power switch tube, and the comparator 204 is also connected to the control unit 10 to send the comparison result to the control unit 10, wherein the control unit 10 is suitable for generating a corresponding switch drive signal according to the comparison result and the expected current flow direction.

[0204] like Figure 5 As shown, the comparator 204 is adapted to be connected to the driver 104 , and the driver 104 is adapted to determine whether it is configured to be in an enabled state by the controller 102 according to the electrical signal.

[0205] In this embodiment, if the detection unit is connected to the driver, the driver is enabled directly by the electrical signal.

[0206] Embodiment nine:

[0207] like Figure 7As shown, the first power switch tube and the second power switch tube are provided with a first electrode (electrode with arrows in the figure) and a second electrode, the first electrode is an emitter or source, and the second electrode is a collector or drain. The first electrode of the first power switch tube S1 is connected to the first electrode of the second power switch tube S2, and the comparator 204 is respectively connected to the second electrode of the first power switch tube S1 and the second electrode of the second power switch tube S2, and the comparator 204 is suitable for comparing the magnitude between the second electrode voltage of the first power switch tube S1 and the second electrode voltage of the second power switch tube, and the comparator 204 is also connected to the control unit 10 to send the comparison result to the control unit 10, wherein the control unit 10 is suitable for generating a corresponding switch drive signal according to the comparison result and the expected current flow direction.

[0208] like Figure 7 As shown, the comparator 204 is adapted to be connected to the controller 102 , and the controller 102 is adapted to configure the driver 104 to be in a continuously enabled state.

[0209] In this embodiment, if the detection unit is connected to the controller, the controller enables the driver all the time, and the controller can control the opening and closing of the first power switch tube and the second power switch tube according to the detection result of the electrical signal output by the detection unit.

[0210] In this embodiment, as another implementation method of reverse series connection, the first electrode of the first power switch tube S1 is connected to the first electrode of the second power switch tube S2, and the second electrode of the first power switch tube S1 and the second electrode of the second power switch tube S2 are respectively determined as two current input terminals.

[0211] At this time, the comparator 204 enables the control unit 10 to determine the switch control strategy by comparing the second electrode voltage of the first power switch tube S1 with the second electrode voltage of the second power switch tube S2.

[0212] Embodiment ten:

[0213] like Fig.16 As shown, for a control method of the reverse blocking switch assembly described in Embodiment 8 and Embodiment 9, the electrical signal includes a third voltage and a fourth voltage, the third voltage is the voltage of the second electrode of the first power switch tube, and the fourth voltage is the voltage of the second electrode of the second power switch tube, and the control method includes:

[0214] Step S1602: the desired current flow direction is from the first switch unit to the second switch unit.

[0215] Step S1604: if the comparator detects that the third voltage is greater than the fourth voltage, the first power switch tube and the second power switch tube are controlled to be turned on and off according to a specified control strategy.

[0216] Step S1606: if the comparator detects that the third voltage is less than or equal to the fourth voltage, the first power switch tube and the second power switch tube are configured to be in a closed state.

[0217] like Fig.17 As shown, for another control method of the reverse blocking switch assembly described in Embodiment 8 and Embodiment 9, the electrical signal includes a third voltage and a fourth voltage, the third voltage is the voltage of the second electrode of the first power switch tube, and the fourth voltage is the voltage of the second electrode of the second power switch tube, and the control method includes:

[0218] Step S1702: the desired current flow direction is from the second switch unit to the first switch unit.

[0219] Step S1704: if the comparator detects that the fourth voltage is greater than the third voltage, the first power switch tube and the second power switch tube are controlled to be turned on and off according to a specified control strategy.

[0220] Step S1706: if the comparator detects that the fourth voltage is less than or equal to the third voltage, the first power switch tube and the second power switch tube are configured to be in a closed state.

[0221] In this embodiment, the third voltage is compared with the fourth voltage to determine the current direction when the switch component is turned on, so as to detect whether the current direction is consistent with the expected current flow direction. If they are consistent, it is turned on; if they are inconsistent, it is turned off to achieve reverse blocking, wherein the specified control strategy can be to control the first power switch tube and the second power switch tube to be turned on when they need to be turned on.

[0222] Configuring the first power switch tube and the second power switch tube to be in a closed state may directly stop sending the switch driving signal to the first power switch tube and the second power switch tube.

[0223] Embodiment eleven:

[0224] like Figure 8 As shown, in any of the above embodiments, the detection unit 20 includes a voltage detection module 206, the first switch unit Q1 includes a first power switch tube S1, and the second switch unit Q2 includes a second power switch tube S2. If the second electrode of the first power switch tube S1 is connected to the second electrode of the second power switch tube S2, the voltage detection module 206 is respectively connected to the first electrode of the first power switch tube S1 and the first electrode of the second power switch tube S2. The voltage detection module 206 is suitable for collecting the first voltage of the first power switch tube S1 and the second voltage of the second power switch tube S2, and sending the first voltage and the second voltage to the control unit 10, wherein the control unit 10 is suitable for generating a corresponding switch drive signal according to the first voltage, the second voltage and the expected current flow direction.

[0225] like Figure 8As shown, the voltage detection module 208 is adapted to be connected to the controller 102 , and the controller 102 is adapted to configure the driver 104 to be in a continuously enabled state.

[0226] In this embodiment, the controller enables the driver all the time, and the controller can control the opening and closing of the first power switch tube and the second power switch tube according to the detection result of the electrical signal output by the detection unit.

[0227] As another connection mode between the control unit and the detection unit, the detection unit is suitable for being connected to a driver, and the driver is suitable for being configured to an enabled state by an electrical signal.

[0228] In this embodiment, if the detection unit is connected to the driver, the driver is enabled directly by the electrical signal.

[0229] In this embodiment, as an implementation method of reverse series connection, the second electrode of the first power switch tube S1 is connected to the second electrode of the second power switch tube S2, and the first electrode of the first power switch tube S1 and the first electrode of the second power switch tube S2 are respectively determined as two current input terminals.

[0230] Specifically, the voltage detection module 206 is suitable for being connected to the first electrode of the first power switch tube S1 and the first electrode of the second power switch tube S2, respectively, so as to detect the first voltage of the first power switch tube S1 and the second voltage of the second power switch tube S2. The voltage detection module 206 can send the first voltage and the second voltage to the control unit 10. The control unit 10 can determine the voltage drop direction between the first power switch tube S1 and the second power switch tube S2 according to the values ​​of the first voltage and the second voltage, so as to determine the current direction based on the voltage drop direction, and then detect whether the current current direction is consistent with the expected current flow direction, and send a switch drive signal to the first power switch tube S1 and the second power switch tube S2 according to the detection result, so as to turn on the first power switch tube S1 and the second power switch tube S2 when they are consistent.

[0231] If the desired current flow direction is from the first power switch tube S1 to the second power switch tube S2, the second power switch tube S2 remains in a continuously turned-on state. According to the detection result of the voltage detection module 206, it is determined that the first voltage is greater than the second voltage, and the first power switch tube S1 is controlled to be turned on. If according to the detection result of the voltage detection module 206, it is determined that the first voltage is less than the second voltage, the first power switch tube S1 is controlled to be turned off to prevent the current backflow phenomenon.

[0232] If the desired current flow direction is from the second power switch tube S2 to the first power switch tube S1, the first power switch tube S1 remains in a continuously turned-on state, and according to the detection result of the voltage detection module 206, it is determined that the first voltage is greater than the second voltage, then the second power switch tube S2 is controlled to be turned on; if according to the detection result of the voltage detection module 206, it is determined that the first voltage is greater than the second voltage, then the second power switch tube S2 is controlled to be turned off to prevent the current backflow phenomenon.

[0233] If it is bidirectional current mode, the above two control logics are combined.

[0234] Embodiment 12:

[0235] like Fig.18 As shown, a control method for the reverse blocking switch assembly described in the eleventh embodiment includes:

[0236] Step S1802: the desired current flow direction is from the first switch unit to the second switch unit.

[0237] Step S1804: If the controller detects that the first voltage is greater than the second voltage, the first power switch tube and the second power switch tube are controlled to switch on and off according to a specified control strategy.

[0238] Step S1806: If the controller detects that the first voltage is less than or equal to the second voltage, the first power switch tube and the second power switch tube are configured to be in a closed state.

[0239] like Fig.19 As shown, another control method for the reverse blocking switch assembly described in the eleventh embodiment includes:

[0240] Step S1902: the desired current flow direction is from the second switch unit to the first switch unit.

[0241] Step S1904: If the controller detects that the second voltage is greater than the first voltage, the first power switch tube and the second power switch tube are controlled to switch on and off according to a specified control strategy.

[0242] Step S1906: if the controller detects that the second voltage is less than or equal to the first voltage, the first power switch tube and the second power switch tube are configured to be in a closed state.

[0243] In this embodiment, the current direction when the switch component is turned on is determined by comparing the first voltage with the second voltage to detect whether the current direction is consistent with the expected current flow direction. If they are consistent, it is turned on; if they are inconsistent, it is turned off to achieve reverse blocking, wherein the specified control strategy can be to control the first power switch tube and the second power switch tube to be turned on when they need to be turned on.

[0244] Configuring the first power switch tube and the second power switch tube to be in a closed state may directly stop sending the switch driving signal to the first power switch tube and the second power switch tube.

[0245] Embodiment 13:

[0246] like Fig. 9 As shown, in any of the above embodiments, if the first electrode of the first power switch tube S1 is connected to the first electrode of the second power switch tube S2, the voltage detection module 206 is respectively connected to the second electrode of the first power switch tube S1 and the second electrode of the second power switch tube S2, and the voltage detection module 206 is suitable for collecting the third voltage of the first power switch tube S1 and the fourth voltage of the second power switch tube S2, and sending the third voltage and the fourth voltage to the control unit 10, wherein the control unit 10 is suitable for generating a corresponding switch drive signal according to the third voltage, the fourth voltage and the expected current flow direction.

[0247] like Fig. 9 As shown, the voltage detection module 206 is adapted to be connected to the controller 102 , and the controller 102 is adapted to configure the driver 104 to be in a continuously enabled state.

[0248] In this embodiment, the controller enables the driver all the time, and the controller can control the opening and closing of the first power switch tube and the second power switch tube according to the detection result of the electrical signal output by the detection unit.

[0249] In this embodiment, as another implementation method of reverse series connection, the first electrode of the first power switch tube S1 is connected to the first electrode of the second power switch tube S2, and the second electrode of the first power switch tube S1 and the second electrode of the second power switch tube S2 are respectively determined as two current input terminals.

[0250] At this time, the voltage detection module 206 detects the third voltage of the first power switch tube S1 and the fourth voltage of the second power switch tube S2 to enable the control unit 10 to determine the switch control strategy.

[0251] like Fig. 20 As shown, a control method for the reverse blocking switch assembly described in the eleventh embodiment includes:

[0252] In step S2002 , the desired current flow direction is from the first switch unit to the second switch unit.

[0253] Step S2004: If the controller detects that the third voltage is greater than the fourth voltage, the first power switch tube and the second power switch tube are controlled to switch on and off according to a specified control strategy.

[0254] Step S2006: If the controller detects that the third voltage is less than or equal to the fourth voltage, the first power switch tube and the second power switch tube are configured to be in a closed state.

[0255] like Fig.21 As shown, another control method for the reverse blocking switch assembly described in the eleventh embodiment includes:

[0256] Step S2102: the desired current flow direction is from the second switch unit to the first switch unit.

[0257] Step S2104: if the controller detects that the fourth voltage is greater than the third voltage, the first power switch tube and the second power switch tube are controlled to switch on and off according to a specified control strategy.

[0258] Step S2106: if the controller detects that the fourth voltage is less than or equal to the third voltage, the first power switch tube and the second power switch tube are configured to be in a closed state.

[0259] In this embodiment, the third voltage is compared with the fourth voltage to determine the current direction when the switch component is turned on, so as to detect whether the current direction is consistent with the expected current flow direction. If they are consistent, it is turned on; if they are inconsistent, it is turned off to achieve reverse blocking, wherein the specified control strategy can be to control the first power switch tube and the second power switch tube to be turned on when they need to be turned on.

[0260] Configuring the first power switch tube and the second power switch tube to be in a closed state may directly stop sending the switch driving signal to the first power switch tube and the second power switch tube.

[0261] like Fig. 22 As shown, the control device 220 of the reverse blocking switch component according to the embodiment of the present application includes: a memory 2202 and a processor 2204; the memory 2202 is used to store program code; the processor 2204 is used to execute the steps of the operation control method of the reverse blocking switch component defined in any one of the above embodiments.

[0262] The reverse blocking switch assembly according to the embodiment of the present application includes the control device 220 of the reverse blocking switch assembly.

[0263] According to the computer-readable storage medium of the embodiment of the present application, a computer program is stored thereon, and when the computer program is executed by a processor, the steps of the operation control method defined in the above embodiment are implemented.

[0264] In the present invention, the terms "first", "second", and "third" are used for descriptive purposes only and should not be understood as indicating or implying relative importance; the term "plurality" refers to two or more, unless otherwise clearly defined. The terms "installed", "connected", "connected", "fixed", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; "connected" can be a direct connection or an indirect connection through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0265] In the description of the present invention, it is necessary to understand that the directions or positional relationships indicated by terms such as “upper”, “lower”, “left”, “right”, “front” and “back” are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or unit referred to must have a specific direction, be constructed and operated in a specific orientation, and therefore, cannot be understood as a limitation on the present invention.

[0266] In the description of this specification, the description of the terms "one embodiment", "some embodiments", "specific embodiments", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0267] It should be noted that in the claims, any reference signs placed between brackets shall not be construed as limiting the claims. The word "comprising" does not exclude the presence of components or steps not listed in the claims. The word "a" or "an" preceding a component does not exclude the presence of a plurality of such components. The present application may be implemented by means of hardware comprising several different components and by means of a suitably programmed computer. In a unit claim enumerating several means, several of these means may be embodied by the same item of hardware. The use of the words first, second, and third etc. does not indicate any order. These words may be interpreted as names.

[0268] The term "plurality" means two or more than two, unless otherwise expressly defined. The terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; "connected" can be a direct connection or an indirect connection through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to the specific circumstances.

[0269] Although the preferred embodiments of the present application have been described, those skilled in the art may make other changes and modifications to these embodiments once they have learned the basic creative concept. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments and all changes and modifications falling within the scope of the present application.

[0270] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A reverse blocking switch assembly, characterized in that: include: Control unit; A first switch unit and a second switch unit connected in reverse series, wherein the controlled poles of the first switch unit and the second switch unit are both connected to the control unit; a detection unit connected to the control unit, the detection unit being adapted to detect electrical signals of the first switch unit and the second switch unit, the control unit being configured to send switch drive signals to the first switch unit and the second switch unit according to a desired current flow direction and the electrical signals; The first switch unit includes a first power switch tube, and the second switch unit includes a second power switch tube; The detection unit includes a current detection module, and the current detection module is suitable for detecting the current direction between the first switch unit and the second switch unit. When the current direction is consistent with the expected current flow direction, the first power switch tube and the second power switch tube are both turned on; The detection unit includes a comparator; If the second electrode of the first power switch tube is connected to the second electrode of the second power switch tube, the comparator is connected to the first electrode of the first power switch tube and the first electrode of the second power switch tube respectively, and the comparator is suitable for comparing the voltage between the first electrode of the first power switch tube and the first electrode of the second power switch tube, and sending the comparison result to the control unit; The control unit comprises: Controller; A driver, wherein an input terminal of the driver is connected to the controller, the driver is suitable for being configured to be in an enabled state to drive the first switch unit and / or the second switch unit to open or close, the comparator is suitable for being connected to the driver, and the driver is suitable for determining whether to be configured to be in an enabled state according to the electrical signal; Wherein, the first power switch tube and the second power switch tube are MOS tubes.

2. The reverse blocking switch assembly according to claim 1, characterized in that: The first power switch tube has a reverse-parallel diode or the first switch unit further includes a first diode reverse-parallel to the first power switch tube; The second power switch tube has a reverse-parallel diode or the second switch unit further includes a second diode reverse-parallel to the second power switch tube. The first power switch tube and the second power switch tube are further provided with a first electrode and a second electrode, and the first electrode is suitable for connecting to the substrate inside the switch tube.

3. The reverse blocking switch assembly according to claim 2, characterized in that: The electrical signal includes a current direction between the first switch unit and the second switch unit, One end of the current detection module is connected to the common connection end of the first switch unit and the second switch unit, and the other end of the current detection module is connected to the control unit. Wherein, the control unit is adapted to generate the corresponding switch drive signal according to the current direction and the expected current flow direction.

4. The reverse blocking switch assembly according to claim 2, characterized in that: The control unit is adapted to generate the corresponding switch driving signal according to the comparison result and the expected current direction.

5. The reverse blocking switch assembly according to claim 4, characterized in that: If the first electrode of the first power switch tube is connected to the first electrode of the second power switch tube, the comparator is connected to the second electrode of the first power switch tube and the second electrode of the second power switch tube respectively, the comparator is suitable for comparing the magnitude between the second electrode voltage of the first power switch tube and the second electrode voltage of the second power switch tube, and the comparator is also connected to the control unit to send the comparison result to the control unit. Wherein, the control unit is adapted to generate the corresponding switch driving signal according to the comparison result and the expected current direction.

6. The reverse blocking switch assembly according to claim 2, characterized in that: The detection unit includes a voltage detection module, If the second electrode of the first power switch tube is connected to the second electrode of the second power switch tube, the voltage detection module is respectively connected to the first electrode of the first power switch tube and the first electrode of the second power switch tube, the voltage detection module is suitable for collecting a first voltage and a second voltage, and sending the first voltage and the second voltage to the control unit, the first voltage is the voltage of the first electrode of the first power switch tube, and the second voltage is the voltage of the first electrode of the second power switch tube, The control unit is adapted to generate the corresponding switch drive signal according to the first voltage, the second voltage and the expected current direction.

7. The reverse blocking switch assembly according to claim 6, characterized in that: If the first electrode of the first power switch tube is connected to the first electrode of the second power switch tube, the voltage detection module is respectively connected to the second electrode of the first power switch tube and the second electrode of the second power switch tube, the voltage detection module is suitable for collecting a third voltage and a fourth voltage, and sending the third voltage and the fourth voltage to the control unit, the third voltage is the voltage of the second electrode of the first power switch tube, and the fourth voltage is the voltage of the second electrode of the second power switch tube, Wherein, the control unit is suitable for generating the corresponding switch driving signal according to the third voltage, the fourth voltage and the expected current direction.

8. The reverse blocking switch assembly according to any one of claims 1 to 7, characterized in that: The detection unit is adapted to be connected to the controller, and the controller is adapted to configure the driver to be in a continuously enabled state.

9. The reverse blocking switch assembly according to any one of claims 1 to 7, characterized in that: The detection unit is suitable for being connected to the driver, and the driver is suitable for being configured into an enabled state by the electrical signal.

10. A method for controlling a reverse blocking switch assembly, characterized in that: The reverse blocking switch assembly includes a first switch unit and a second switch unit connected in reverse series, and the control method includes: detecting electrical signals of the first switch unit and the second switch unit; configuring switch drive signals of the first switch unit and the second switch unit according to the desired current flow direction and the detection result of the electrical signal; The first switch unit includes a first power switch tube, the second switch unit includes a second power switch tube, and the detecting of the electrical signals of the first switch unit and the second switch unit specifically includes: determining a current direction between the first power switch tube and the second power switch tube according to current signals of the first power switch tube and the second power switch tube, and determining the current direction as the electrical signal; The control method further comprises: When the current direction is consistent with the expected current flow direction, both the first power switch tube and the second power switch tube are turned on.

11. The control method of the reverse blocking switch assembly according to claim 10, characterized in that: The first power switch tube has a reverse-parallel diode or the first switch unit further includes a first diode reverse-parallel to the first power switch tube; The second power switch tube has a reverse-parallel diode or the second switch unit further includes a second diode reverse-parallel to the second power switch tube.

12. The control method of the reverse blocking switch assembly according to claim 11, characterized in that: The configuring the switch drive signals of the first switch unit and the second switch unit according to the expected current flow direction and the detection result of the electrical signal specifically includes: The second electrode of the first power switch tube is connected to the second electrode of the second power switch tube, the desired current flows from the first switch unit to the second switch unit, and the second power switch tube is controlled to be in a conducting state; If it is detected that the current direction is from the first power switch tube to the second power switch tube, control to turn on the first power switch tube; If it is detected that the current direction is from the second power switch tube to the first power switch tube, the first power switch tube is controlled to be turned off.

13. The control method of the reverse blocking switch assembly according to claim 11, characterized in that: The configuring the switch drive signals of the first switch unit and the second switch unit according to the expected current flow direction and the detection result of the electrical signal specifically includes: The first electrode of the first power switch tube is connected to the first electrode of the second power switch tube, the desired current flows from the second switch unit to the first switch unit, and the second power switch tube is controlled to be in a conducting state; If it is detected that the current direction is from the second power switch tube to the first power switch tube, control the first power switch tube to be turned on; If it is detected that the current direction is from the first power switch tube to the second power switch tube, the first power switch tube is controlled to be turned off.

14. The control method of the reverse blocking switch assembly according to claim 11, characterized in that: The configuring the switch drive signals of the first switch unit and the second switch unit according to the expected current flow direction and the detection result of the electrical signal specifically includes: The second electrode of the first power switch tube is connected to the second electrode of the second power switch tube, and the desired current flow direction is from the second switch unit to the first switch unit, then the first power switch tube is controlled to be in a conducting state; and If it is detected that the current direction is from the first power switch tube to the second power switch tube, controlling to turn off the second power switch tube; If it is detected that the current direction is from the second power switch tube to the first power switch tube, the second power switch tube is controlled to be turned on.

15. The control method of the reverse blocking switch assembly according to claim 11, characterized in that: The configuring the switch drive signals of the first switch unit and the second switch unit according to the expected current flow direction and the detection result of the electrical signal specifically includes: The first electrode of the first power switch tube is connected to the first electrode of the second power switch tube, and the desired current flows from the first switch unit to the second switch unit, and the first power switch tube is controlled to be in a conducting state; and If it is detected that the current direction is from the first power switch tube to the second power switch tube, control the second power switch tube to be turned on; If it is detected that the current direction is from the second power switch tube to the first power switch tube, the second power switch tube is controlled to be turned off.

16. The control method of the reverse blocking switch assembly according to claim 11, characterized in that: The detecting the electrical signals of the first switch unit and the second switch unit specifically includes: If the second electrode of the first power switch tube is connected to the second electrode of the second power switch tube, the electrical signal includes a first voltage and a second voltage, the first voltage is the voltage of the first electrode of the first power switch tube, and the second voltage is the voltage of the first electrode of the second power switch tube.

17. The control method of the reverse blocking switch assembly according to claim 16, characterized in that: The configuring the switch drive signals of the first switch unit and the second switch unit according to the expected current flow direction and the detection result of the electrical signal specifically includes: The desired current flow direction is from the first switch unit to the second switch unit, and if the first voltage is greater than the second voltage, the first power switch tube and the second power switch tube are controlled to be turned on and off according to a specified control strategy; If the first voltage is less than or equal to the second voltage, the first power switch tube and the second power switch tube are configured to be in a closed state.

18. The control method of the reverse blocking switch assembly according to claim 17, characterized in that: Also includes: The desired current flow direction is from the second switch unit to the first switch unit, and if the second voltage is greater than the first voltage, the first power switch tube and the second power switch tube are controlled to be turned on and off according to a specified control strategy; If the second voltage is less than or equal to the first voltage, the first power switch tube and the second power switch tube are configured to be in a closed state.

19. The control method of the reverse blocking switch assembly according to claim 11, characterized in that: The detecting the electrical signals of the first switch unit and the second switch unit specifically includes: If the first electrode of the first power switch tube is connected to the first electrode of the second power switch tube, the electrical signal includes a third voltage and a fourth voltage, the third voltage is the voltage of the second electrode of the first power switch tube, and the fourth voltage is the voltage of the second electrode of the second power switch tube.

20. The control method of the reverse blocking switch assembly according to claim 19, characterized in that: The configuring the switch drive signals of the first switch unit and the second switch unit according to the expected current flow direction and the detection result of the electrical signal specifically includes: The desired current flow direction is from the first switch unit to the second switch unit, and if the third voltage is greater than the fourth voltage, the first power switch tube and the second power switch tube are controlled to be turned on and off according to a specified control strategy; If the third voltage is less than or equal to the fourth voltage, the first power switch tube and the second power switch tube are configured to be in a closed state.

21. The control method of the reverse blocking switch assembly according to claim 20, characterized in that: Also includes: The desired current flow direction is from the second switch unit to the first switch unit, and if the fourth voltage is greater than the third voltage, the first power switch tube and the second power switch tube are controlled to be turned on and off according to a specified control strategy; If the fourth voltage is less than or equal to the third voltage, the first power switch tube and the second power switch tube are configured to be in a closed state.

22. The control method of the reverse blocking switch assembly according to any one of claims 11 to 21, characterized in that: The reverse blocking switch assembly further includes a driver, the driver is adapted to drive the first switch unit and / or the second switch unit to open and close, and the switch drive signals of the first switch unit and the second switch unit are configured according to the expected current flow direction and the detection result of the electrical signal, specifically including: If the driver directly receives the electrical signal and / or the detection result of the electrical signal, the driver is adapted to determine whether it is enabled according to the electrical signal; If the driver does not directly receive the electrical signal and / or the detection result of the electrical signal, the driver is configured to be in a continuously enabled state.

23. A control device for a reverse blocking switch assembly, characterized in that: include: Memory and processor; The memory is used to store program codes; The processor is used to call the program code to execute the control method of the reverse blocking switch component according to any one of claims 10 to 22.

24. A reverse blocking switch assembly, characterized in that: include: A control device for a reverse blocking switch assembly as claimed in claim 23.

25. A computer-readable storage medium having an operation control program stored thereon, characterized in that: When the operation control program is executed by the processor, the control method of the reverse blocking switch assembly as described in any one of claims 10 to 22 is implemented.

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